JP3631336B2 - Endoscope position detection coil device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an endoscope position detecting coil device used for detecting an endoscope shape and the like.
[0002]
[Prior art]
In an apparatus for detecting the shape of an endoscope using a magnetic field, a coil for generating a magnetic field or detecting a magnetic field for detecting each position of the endoscope to determine the shape of the endoscope at the time of insertion into the body It is necessary to estimate the shape by detecting the position of the coil.
[0003]
For this purpose, it is generally used in combination with a probe device that is incorporated in an insertion portion of an endoscope or can be inserted into a channel for a treatment instrument of an endoscope, and in which a coil is housed.
[0004]
In this case, it is necessary to form a coil device by connecting a wire for constituting the coil and a signal line for signal transmission. When this connection is performed by soldering, the solder adheres. The portion becomes stiff, and if a bending force is applied to this portion, it is likely to be disconnected or cut, and the function of detecting the endoscope position and shape may not be performed.
[0005]
[Problems to be solved by the invention]
Rigidity is increased by soldering by crimping with a metal terminal instead of soldering, but in this case, a metal part is added in addition to the coil part that is not bent in the endoscope that is originally bent. As a result, there is a drawback that the endoscope is more difficult to bend and the insertion property or operability for insertion into a bent body cavity is impaired.
[0006]
Although it is conceivable to create a single wire from the beginning instead of configuring the signal wire and the wire constituting the coil separately, the workability when winding the wire around the core to form the coil becomes worse and the signal Another problem arises, such as the need for complicated work such as the need to perform the work of turning the signal line part to suppress the unwanted magnetic field generated in the line part after the coil is created.
[0007]
Moreover, in order to suppress unnecessary radiation, it is also conceivable to use a coaxial wire instead of using a stranded wire as a conducting wire (signal wire) that transmits a drive signal to the coil. In this case, since the thick wire is directly soldered to the wire wound around the coil, the wire may be easily cut during the bending operation of the endoscope.
[0008]
For this reason, there is a situation where a connection mechanism or a connection method in which the coil wire and the signal line are reliably connected and no disconnection or the like occurs is desired.
[0009]
(Object of invention)
The present invention has been made in view of the above points.An object of the present invention is to provide an endoscope position detecting coil device capable of preventing the occurrence of cutting or the like against bending applied during use and improving durability.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, an endoscope position detecting coil device according to claim 1 of the present invention is installed in an endoscope inserted into a body cavity and used for detecting an endoscope position using a magnetic field. In the endoscope position detecting coil device, a hard part having a fixing part for winding and fixing a connection part between a coil used for generation or detection of a magnetic field and a wire on the end side forming the coil and a signal line. A connecting member, wherein the fixing portion is a recess provided on an outer surface of the connecting member.
In order to achieve the object, an endoscope position detecting coil device according to claim 2 of the present invention is the endoscope position detecting coil device according to claim 1, wherein the connecting member includes at least one connecting member. The outer diameter of the portion is configured to be larger than the outer diameter of the coil.
In order to achieve the object, an endoscope position detecting coil device according to claim 3 of the present invention is the endoscope position detecting coil device according to claim 1 or 2, wherein the coil is And a support member around which the coil is wound. The connection member is provided on at least one end side of the support member, and is provided with a recess into which the end of the support member can be inserted. It is characterized by that.
In order to achieve the object, an endoscope position detecting coil device according to a fourth aspect of the present invention is the endoscope position detecting coil device according to the first, second, or third aspect. A support member that supports the coil and on which the coil is wound, and the connection member is provided on at least one end side of the support member, and starts to wind the wire that forms the coil on the one end side. A plurality of recesses for fixing the end portion and the winding end end portion are provided, respectively.
In order to achieve the object, an endoscope position detecting coil device according to claim 5 of the present invention is the endoscope position detecting coil device according to claim 1 or 2, wherein A support member around which the coil is wound, and the connection members are provided at both ends of the support member, respectively, and one connection member has a winding start end of the wire forming the coil. A concave portion for fixing is provided, and the other connecting member is provided with a concave portion for fixing the winding end portion of the wire forming the coil.
In order to achieve the above object, an endoscope position detecting coil device according to claim 6 of the present invention is installed in an endoscope inserted into a body cavity and detects an endoscope position using a magnetic field. In the endoscope position detecting coil device used in the present invention, a hard part having a fixing part for fixing a connecting part between a coil used for generation or detection of a magnetic field and a wire rod on the end side forming the coil and a signal line. A connecting member, wherein the connecting member is provided with a wire groove through which the wire passes.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be specifically described below with reference to the drawings.
(First embodiment)
1 to 3 relate to a first embodiment of the present invention, FIG. 1 shows an endoscope shape detection probe device having the first embodiment, and FIG. 2 shows a part of FIG. FIG. 3 shows an endoscope position detecting coil device according to the first embodiment, FIG. 3 (A) is a side view partially showing a cross section, and FIG. 3 (B) is FIG. The front shape of the connection member seen from the left side of A) is shown.
[0012]
An endoscopic shape detection probe device (hereinafter abbreviated as a probe device) 1 shown in FIG. 1 is inserted into, for example, a treatment instrument channel of an endoscope (not shown) inserted into a body cavity and fitted into the treatment instrument channel. A plurality of endoscope position detecting coil devices (hereinafter simply abbreviated as coil devices) 3 are arranged in a cylindrical tube tube 2 having flexibility, which is fixed by, for example, and each coil device 3 has a rod shape. Each of the coil devices 3 is fixed to the connecting member 4 at a predetermined distance d with an adhesive or the like, and a plurality of coil devices 3 are connected in the longitudinal direction of the probe device 1 at a predetermined distance d (this distance d is a constant distance). However, if the distance d is known, it may not be constant).
[0013]
The connecting member 4 is made of a flexible material in the form of a wire so as not to hinder the bending operation or the bendable characteristics when the probe device 1 is installed in an endoscope.
[0014]
As shown in FIG. 2 or FIG. 3, each coil device 3 is formed by winding a core 5 formed of a hard member into a cylindrical shape, and a thin wire such as a thin copper wire that is insulation-coated on the core 5. It has a coil 6 and a connecting member 7 made of a hard non-conductive member (insulating member) fixed to both ends of a core 5 that supports the coil 6.
[0015]
Each connecting member 7 has a substantially cylindrical shape, and a concave portion into which the core 5 can be fitted is provided at the center position of one end face, and a concave portion 8 cut out in a ring shape from the outer surface in the circumferential direction is provided on the other end side. It can be used for positioning to electrically connect one end of the coil 6 to one end of the signal transmission signal line 9 by soldering, and protects the direct application of force to the connecting portion 10 by soldering. Thus, a fixing portion (or holding portion) that is fixed (or held) is formed.
[0016]
In addition, an end portion adjacent to the concave portion 8 in each connecting member 7 is formed with a small diameter portion, and as can be seen from FIG. 2, the signal line 9 is connected to the concave portion 8 without increasing the inner diameter of the outer tube 2. The signal line 9 that is housed or connected to each end of the coil 6 is easily routed from the recess 8 to the outside.
[0017]
The outer diameter of the connecting member 7 is slightly larger than the outer diameter of the coil 6 wound around the core 5 and protrudes radially outward from the coil 6 to protect the coil 6.
The signal line 9 connected to the coil device 3 is inserted through the outer tube 2, and the rear end of the signal line 9 is connected to a connector 12 provided at the rear end of the probe device 1 with a bend stopper 11. Is done.
[0018]
The connector 12 can be covered with a waterproof cap 13 in consideration of disinfection and sterilization. The tip of the probe device 1 is closed with a hemispherical tip member 14.
[0019]
The connector 12 is detachably connected to an endoscope shape detection device that detects an endoscope shape (not shown), and is driven by an alternating current from a drive signal generation circuit for generating, for example, a magnetic field in the endoscope shape detection device. A signal is sequentially applied to each coil device 3 via a signal line 9 for transmitting the drive signal, and the coil device 3 to which the drive signal is applied generates a magnetic field around it. That is, each coil device 3 functions as a source coil.
[0020]
The magnetic field generated by each coil device 3 is detected by a plurality of magnetic field detection sense coils arranged at a predetermined position (known position) such as the position of the corner of the bed, and sent to the source coil position detection unit. A three-dimensional area in which the device 3 exists is estimated. By estimating the three-dimensional region where the same coil device 3 exists from the positions of a plurality of sense coils for magnetic field detection, it is detected that the coil device 3 exists at the position of a narrow three-dimensional region that overlaps. .
[0021]
As shown in FIG. 2, by arranging a plurality of coil devices 3 fixed to the connecting member 4 at a predetermined interval d along the longitudinal direction of the probe device 1, each three-dimensional position of the coil devices 3 is detected. Then, the shape of the insertion portion of the endoscope through which the probe device 1 is inserted is estimated by performing an operation for smoothly connecting the detected positions, and the estimated shape of the insertion portion is displayed on the monitor. be able to.
[0022]
Moreover, this probe apparatus 1 can also be used for magnetic field detection. In this case, a magnetic field detection signal detected by the coil device 3 in the probe device 1 is generated by using a plurality of coils arranged at predetermined positions as a source coil and generating a magnetic field by sequentially applying drive signals. Is transmitted to the coil position detector via the signal line 9, and the coil device 3 is estimated by estimating a three-dimensional region in which the coil device 3 is present from a plurality of predetermined positions as reference positions based on the amplitude and phase information of the magnetic field detection signal. 3 three-dimensional positions can be estimated. Furthermore, the shape of the insertion portion of the endoscope can be displayed. A detailed description of the endoscope shape detection apparatus is disclosed in Japanese Patent Application Laid-Open No. 8-000542 filed by the present applicant.
[0023]
In the coil device 3 of the present embodiment, as shown in FIG. 2 or FIG. 3A, connecting members 7 made of an insulating member are provided at both ends of the core 5 around which the coil 6 is wound, and each connecting member 7 has a ring. A concave portion 8 is provided.
[0024]
Then, the end of a wire 6 (abbreviated as a lead wire) 6a extending from each end of the coil 6 formed by winding the wire and stripped of the insulation coating is stored so as to be wound around the recess 8 at least once or more. Then, the signal wire 9 inserted in the longitudinal direction of the probe device 1 is positioned so as to be easily soldered, and the lead wire portion from which the insulating coating on the end side is peeled is adjacent to the signal wire 9 at least once. When the above-described winding is performed and soldering is performed with a soldering iron or the like, the melted solder adheres to both of the lead wire portions that are wound and positioned in the concave portion 8, and the electrical connection by solder, that is, the connection portion 10 is connected. It can be formed easily and reliably.
[0025]
In addition, a winding portion where the signal line 9 is wound at least once is formed on the connection portion 10 to reinforce the connection portion 10.
[0026]
In addition, the lead wire 6a and the lead wire of the signal wire 9 are wound so as to overlap each other to form an electrically connected and fixed connection portion, and the elastic signal wire 9 is wound thereon at least once. A reinforced configuration may be used.
[0027]
For this reason, the recess 8 has a groove width that can accommodate the lead wire of the signal wire 9 (having at least the wire diameter from which the insulation coating is removed) thicker than the thin lead wire 6a. It should be noted that the soldering connection can be performed more easily and reliably if there is a space where the solder can wrap around.
[0028]
The coil device 3 is manufactured by the following method, for example. In order to generate or detect a magnetic field, a coil 6 is formed by winding a wire around a hard core 5, and a hard and non-conductive connecting member 7 provided with a recess 8 capable of winding the wire and the signal wire 9. Is fixed to each end portion of the core 5, and the connection portion 10 in which the wire material of the coil 6 and the wire material of the signal wire 9 are wound and soldered to the recess portion 8 is fixed by the recess portion 8, Wrap the signal line 9 (not hardened with solder) about once.
[0029]
In this way, the connection portion 10 is fixed in the recess 8 of the hard connection member 7 (which does not deform with respect to bending), so that the probe device 1 is bent and a force such as bending acts on the coil device 3. However, since a force is applied to the connection portion 10 via the connection member 7, the connection member 7 is formed of a hard member, so that the connection portion 10 is protected from being applied because it is not deformed.
Even if a force is applied to a portion that is not hardened by solder, the signal line 9 has elasticity, so that disconnection can be prevented.
[0030]
As shown in FIG. 2, in the present embodiment, the probe device 1 includes a plurality of coil devices 3 that are discretely housed in the longitudinal direction, and a drive signal is applied to each coil device 3 or each coil device 3. A plurality of signal lines 9 are inserted into the outer tube 2 so that signals detected by the devices 3 can be transmitted, and two of the plurality of signal lines 9 are connected to each coil device 3. The signal line 9 is fixed on the side of the coil device 3 with an adhesive or the like on the side of the coil device 3.
[0031]
Further, as described above, the signal line 9 shown in FIG. 2 is a twisted line formed by twisting two pairs connected to each coil 6 in order to suppress unnecessary signal radiation.
In this case, the twisted wire shown in FIG. 2 is arranged in a state where the signal wire 9 is loosened between the adjacent coil devices 3, and when bent (or curved), the loosened signal wire portion is bent. Can be deformed in accordance with the deformation, and the deformation prevents a bad influence such as cutting (by a pulling force or the like with respect to the signal line 9 when it is arranged straight).
[0032]
It should be noted that one of the two signal lines 9 connected to each coil device 3 may be made common and the other signal line 9 may be different for each coil device 3.
It should be noted that an insulating adhesive is applied to the coil 6 formed by winding it in a solenoid shape so that the coil 6 is not deformed, and a protective film for protecting the coil 6 is formed. Anyway.
[0033]
In the case of the stranded signal wire 9, in order to suppress an increase in diameter at the portion where the coil device 3 exists, only the portion is not twisted, and the wire of the signal wire 9 is linearly or the like. It is good also as the signal wire 9 hardened by the side part.
[0034]
The effect | action by the coil apparatus 3 of such a structure is demonstrated. When the insertion portion of the endoscope is inserted into a bent part in the body cavity, the insertion shape is displayed on the monitor, so that the insertion can be performed more smoothly than when the insertion shape is not displayed.
[0035]
In such a case, the probe apparatus 1 is inserted into, for example, a treatment instrument channel of an endoscope, and the distal end portion of the probe apparatus 1 is set to a state where the distal end position of the treatment instrument channel is aligned. Further, the connector 12 of the probe device 1 is connected to the endoscope shape detection device.
[0036]
When each coil device 3 is used as a source coil, an alternating drive signal is sequentially applied to the coil device 3 via the signal line 9 to generate a magnetic field around the coil device 3 and arranged at a predetermined position. The three-dimensional position of each coil device 3 is estimated using, for example, the amplitude and phase of the signal detected by the sense coil, and the shape of the insertion portion is monitored from the information of the estimated three-dimensional positions of the plurality of coil devices 3 To display. By referring to the shape of the insertion portion displayed on the monitor, the surgeon can smoothly insert it into the examination target site side even in the case of a bent body cavity.
[0037]
When the insertion portion of the endoscope is inserted into the body cavity bent in this manner, the probe device 1 inserted through the insertion portion is also bent, and is bent by the bending of the bending portion. A force for deforming each coil device 3 disposed inside and a force for extending the signal line 9 inserted into the probe device 1 are applied.
[0038]
In the coil device 3, the core 5 and the connecting member 7 are formed of hard members, so that even when a force to be deformed is applied, the deformation is prevented by the core 5 and the connecting member 7, and the shape of the coil 6 is changed. The winding of the coil 6 is protected without changing, and the force applied to the connecting portion 10 can be eliminated.
[0039]
In addition, when a force such as a pull is applied to the signal line 9 due to bending, the signal line 9 is connected to the connection portion 10 via a loosely loosened portion. By deforming, the pulling force or the like is absorbed and almost no force is applied to the connecting portion 10, and disconnection of the signal line 9 can be prevented.
Therefore, according to this embodiment, even when inserted into a bent body cavity for detecting the endoscope shape, it is possible to effectively prevent cutting and improve durability. .
Further, since the electrical connection work between the coil 6 and the signal wire 9 can be positioned by the work of winding the lead wire around the recess 8, it can be easily performed by soldering. Note that, as indicated by a two-dot chain line in FIG. 3B, the connecting member 4 is guided to the side of the connecting member 7 and a guide groove 15 is provided for preventing the outer shape of the probe device 1 from becoming large. Anyway.
[0040]
FIG. 4 shows a coil device 3A according to a modification of the first embodiment. In this modification, the core 5 provided with the coil 6 is integrally formed by molding so that the entire coil is covered with the resin 19 and the recesses 8 for forming the connecting portions 10 are provided at both ends. .
In FIG. 4, only the lead wire 6 a of the coil 6 is wound around the recess 8.
The operation and effect of this modification are almost the same as those of the first embodiment.
[0041]
In order to make the connection between the lead wire 6a in the recess 8 and the lead wire of the signal wire 9 by soldering, a metal plate such as a copper plate is embedded and formed so as to be exposed on the inner surface of the recess 8. Also good. Instead of embedding the metal plate, a metal fixing member such as copper (separately soldered) configured separately may be provided in the recess 8.
[0042]
In the first embodiment, the concave portion 8 of the connection member 7 is used as a soldering positioning material or support material. The soldered connection portion 10 is covered with a non-conductive member (or insulating member). The structure of the connection portion 10 may be reinforced or strengthened.
[0043]
Further, the entire connection member 7 may be molded with a non-conductive member such as resin and the connection portion 10 may be embedded therein, or the structure of the connection portion 10 may be reinforced or covered so as to cover the entire coil 6. It may be reinforced.
[0044]
In consideration of the possibility that the wire is hardened by soldering and is likely to be broken by bending and pulling, a portion where no solder adheres to the concave portion 8 is wound after soldering in order to further improve the strength. The number of windings may be increased.
In addition, when the probe device 1 is configured and used, a hook portion is formed so that the tensile force applied to the signal line 9 is not directly applied to a soldered portion having low mechanical strength, and the signal line 9 is wound. You may do it.
[0045]
Note that the probe device 1 may be provided not in the endoscope treatment instrument channel but in a storage channel dedicated to the probe device, or may be incorporated in the insertion portion of the endoscope.
[0046]
In the above description, the connecting members 7 at both ends of the core 5 are described as hard insulating members. However, when the core 5 is an insulating member, the connecting member 7 may be a hard conductive member.
[0047]
(Second Embodiment)
FIG. 5 shows a probe device 1B using the coil device 3B of the second embodiment. In the first embodiment, the connecting member 4 is disposed along the side surface of each coil device 3, but in the present embodiment, the connecting member 4 is configured to extend substantially along the center line of each coil device 3B.
[0048]
For this reason, as shown in FIG. 6, each connecting member 7 is provided with a through hole 21 at the center position of the end surface, and is fitted with one end of a connecting member 22 having a fixed length and fixed with an adhesive or the like. The other end side is structured to be fitted into the through hole 21 of the other connecting member 7 of the coil device 3B arranged adjacently and fixed with an adhesive or the like.
[0049]
Other configurations are the same as those of the first embodiment, and the same members are denoted by the same reference numerals and description thereof is omitted.
The operation of the present embodiment is almost the same as that of the first embodiment.
[0050]
In the first embodiment, it is not necessary to provide the through-hole 21 in the connection member 7 and the processing time can be reduced. However, on the other hand, it is necessary to dispose the connecting member 4 along the side surface of the connection member 7. Therefore, the outer diameter of the probe device 1 is increased. On the other hand, this Embodiment can eliminate that the outer diameter of the probe apparatus 1B becomes large for the connection member 22 by fixing the connection member 22 to the through-hole 21 of each coil apparatus 3B. Alternatively, by increasing the coil diameter, the magnetic field generation and magnetic field detection functions are improved, and the detection accuracy of the three-dimensional position can be improved.
The other effects are almost the same as those of the first embodiment.
[0051]
In the second embodiment, the through hole 21 is provided in the connection member 7 and the connecting member 22 is fixed to that portion. In this case, when the connecting member 22 is manufactured as a wire and the side of the connecting member 7 is a simple through hole 21, when fixing with an adhesive or the like, because of fine powder adhered in the cutting process, etc. Low adhesionTheThere is a possibility.
[0052]
In this case, when the plurality of coil devices 3B are stored inside the outer tube 2 of the probe device 1B, there is a possibility that a tensile force is applied and the bonded portion is detached. Even when the adhesive strength is predetermined, if the operator mistakenly performs an excessive bending operation, the adhesive portion may come off.
[0053]
In order to prevent this, a structure such as a modification shown in FIG. 7 may be used.
As shown on the left side of FIG. 7, a conical surface is formed at one end of the connecting member 7 (for example, the left side connecting member 7) in the coil device 3 of FIG. The conical locking member 25 is provided with a chamfered portion 25 cut out so as to be fitted into the chamfered portion 25 at one end of the connecting member 22 shown in FIG. 26 is fixed.
[0054]
Then, as shown by the arrow in FIG. 7, the connecting member 22 is passed through the through hole 21 from the right side, so that the locking member 26 comes into contact with the chamfered portion 25 and has a function of retaining.
[0055]
When the connecting member 22 is formed of a plastic material such as a polymer material, the connecting member 22 itself may be integrally formed with a portion having the function of the locking member 26. Further, the connecting member 22 having a portion with an expanded hole diameter in the vicinity of the core side of the through-hole 21 and having a locking portion (fitting to the portion with the expanded hole diameter) formed of a plastic material in the portion is made plastic. It is possible to use a structure that is difficult to fit and retain.
[0056]
Further, in FIG. 6, male screw portions are provided at both ends of the connecting member 22, and are screwed into the respective male screw portions on the core-side inner peripheral surface of the through hole 21 of each connecting member 7 fixed to both ends of the core 5. By providing the female screw portion, a fixing means for preventing each end portion of the connecting member 22 from being prevented by screwing may be formed.
[0057]
In this case, when one male screw part and the female screw part screwed into the male screw part are of a direction in which the amount of screwing is increased in a normal clockwise direction, the other male screw part and the female screw part screwed into the male screw part are reversed. If the reverse screw structure is such that the amount of screwing increases when rotated in the direction, the connecting member 22 can be screwed to the two connecting members 7 arranged at both ends by rotating in one direction. Easy installation.
[0058]
In the case of the modification shown in FIG. 7 as well, the male screw portion is formed at the end opposite to the end where the locking member 26 is provided, and the end of the opposite side of the connecting member 7 is fixed. A female screw part that is screwed into the male screw part may be formed on the inner peripheral surface of the core side of the through hole 21 so that the connection between the connecting member 7 and the connecting member 22 is not disconnected.
[0059]
(Third embodiment)
FIG. 8A shows the coil device 3C of the third embodiment, and FIG. 8B shows the front shape of one connecting member (specifically, the right connecting member in FIG. 8A). . In the present embodiment, a guide groove 31 through which the signal line 9 passes is provided in the connection member 7. The reason will be described below.
[0060]
The outer shape of the probe portion is limited so that the probe device 1B for detecting the shape of the endoscope can be inserted into a treatment instrument channel or the like of the endoscope.
[0061]
Further, it is necessary to wire the signal line 9 to the connector 12 in order to incorporate a plurality of coil devices (for example, 3B). In order to satisfy this, the outer shape of the coil device 3B and the entire signal line 9 needs to be a size that can be accommodated in the outer tube 2 that also serves as a mechanical reinforcement covering the whole.
[0062]
Therefore, it is necessary to devise a technique for suppressing the diameter of the soldering connection portion 10 so that the outer shape after soldering is a size that fits inside the outer tube 2.
[0063]
In the case of forming the probe device 1B to be inserted into the endoscope, the probe device 1B needs to be of a size that can be inserted into the treatment instrument channel of the endoscope, and the outer shape of the signal line 9 connected to the coil device 3B. For example, in the second embodiment, the signal line 9 is bonded and fixed so that only the portion where the coil device 3B exists is parallel to the dimension.
[0064]
However, the currents flowing in the two parallel lines in the coil device 3B are in opposite directions, and the magnetic field generated by the two electric wires may cause an error (when the coil device 3B is used as a source coil). There is.
[0065]
Therefore, this portion may also be a stranded wire, and may be configured to allow the external dimensions of the configuration of the plurality of coil devices 3B to be expanded by twice the diameter of the signal wire.
In this way, unnecessary radiation can be further suppressed by adopting the stranded wire as a configuration of the entire signal line 9.
[0066]
In this way, when the stranded wire is used over the entire length, the connecting member 7 for reinforcing the soldering portion is also used for regulating both ends of the winding of the coil 6, and the winding is aligned and wound. Since it plays the role for comprising the coil 6, the side part of this member is highly likely to have the largest dimension.
[0067]
Accordingly, the lead wire 6a at the end of the winding wire forming the coil 6 is suppressed from being applied to the lead wire 6a at the end of the winding forming the coil 6 so that stress is not applied from the corner of the connecting member 7 and the lead wire 6a is not disconnected. A guide groove in which the wire 6a and the signal line 9 are accommodated may be formed in advance, and the lead wire 6a and the signal line 9 may be embedded in the guide groove.
[0068]
For this reason, as shown in FIG. 8, in addition to the guide groove 16 for guiding the lead wire 6a at each end of the coil 6 to the recess 8, a guide groove 31 for guiding the signal wire 9 to the recess 8 on the front side of the coil 6 is provided. Further, a guide groove 32 is provided for guiding the signal wire 9 for connection to the coil device 3C disposed on the front side of the coil device 3C.
[0069]
The guide grooves 16 and 31 are formed in a direction oblique to the longitudinal direction of the core 5, and ease the steep angle when wiring to the recess 8. Note that the guide groove 32 for leading to the coil device 3C disposed in front does not have to be provided obliquely.
[0070]
Thereby, the lead wire 6a and the signal wire 9 of the coil 6 are not bent at a steep angle, and stress is not easily applied to the wire itself, so that durability is improved.
[0071]
Further, the outer diameter of the probe portion of the probe device 1B can be reduced. Note that the guide groove 32 is not necessary in the case of the coil device 3 </ b> C arranged at the most tip. Further, a plurality of guide grooves 32 may be provided in the circumferential direction, or may be a groove width through which a plurality of pairs of signal lines 9 can be inserted.
[0072]
Other configurations are the same as those of the second embodiment. Further, the operation of the present embodiment can prevent stress from being applied to the lead wire 6a and the signal wire 9 connected to the coil device 3C by providing the guide groove 16 and the guide groove 31, and the outside of the probe device 1B. The diameter can be reduced. Further, even when the guide groove 32 is provided, the outer diameter of the probe device 1B can be reduced.
[0073]
Instead of providing the guide grooves 16 and 31 separately, a common guide groove may be used.
A guide hole may be used instead of the guide groove 16.
[0074]
(Fourth embodiment)
FIG. 9 shows a coil device 3D of the fourth embodiment. As in the first embodiment, the coil device 3D according to the present embodiment uses a single connecting member 4 to connect and fix a plurality of coil devices 3D at a predetermined interval, and the first embodiment. The connecting member 4 prevents the outer diameter of the probe device from becoming thicker than the form.
[0075]
For this reason, in this embodiment, in the second embodiment shown in FIG. 6, the core 5 is further provided with a through hole 41 communicating with each through hole 21 of the connecting member 7 at both ends at the center position. The connecting member 4 can be passed therethrough.
[0076]
Each coil device 3D is connected and fixed at a predetermined interval by an adhesive or the like.
Further, for example, the lead wire 6a of the coil 6 is guided to the recess 8 through, for example, the guide groove 16.
Other configurations are the same as those of the second embodiment, and the description thereof is omitted.
[0077]
The operation of the present embodiment is almost the same as that of the second embodiment. In addition, the present embodiment has substantially the same effect as the second embodiment except that the connection member 21 in the second embodiment can be less likely to come off from the coil device 3B.
[0078]
In FIG. 9, for example, screw holes at appropriate inner peripheral positions of the through holes 41 of the core 5, or appropriate inner peripheral positions of the through holes 21 of the connecting member 7, You may make it provide the screw part which screws together.
[0079]
Then, by rotating in a state where the screw portion is screwed into the screw hole, the interval can be finely adjusted, and after the adjustment, it is fixed with an adhesive. By fixing in this way, it is possible to prevent the gap from being generated more than the case of the fourth embodiment (the coil device 3D is displaced in the longitudinal direction of the connecting member 4 due to excessive force). be able to.
[0080]
(Fifth embodiment)
FIG. 10A shows the coil device 3E of the fifth embodiment, and FIG. 10B shows the front shape of the connecting member 7A as seen from the right side of FIG. 10A. For the purpose of improving the detection accuracy of the endoscope shape or endoscope position as the coil device 3E of the present embodiment, a structure that ensures as much symmetry as possible with respect to magnetic field generation or magnetic field detection by the coil device 3E. To do.
[0081]
In order to suppress unnecessary radiation and improve the shape detection accuracy of the endoscope, it is necessary to maintain symmetry as much as possible in the winding configuration of the coil 6.
[0082]
For this purpose, the winding is made of a plurality of layers, and the winding start of the coil 6 and the winding end of the coil 6 are set on the same side, so that the central axis of the core 5 can be matched with the central axis of the magnetic field strength characteristics to be generated and detected. It will be a good configuration.
[0083]
Therefore, as shown in FIG. 10A, in the coil device 3E, a connecting member 7A having two concave portions 8 and 8 and a connecting member 7B having no concave portion are fixed to both ends of the core 5, and a wire is attached to the core 5. Even-numbered layers (four layers in FIG. 10A), winding start and end lead wires 6a of the coil 6 are wound around the recesses 8 and 8 provided on the same side, respectively, to lead the signal wire 9 The connecting portion 10 is formed by being connected and fixed to the wire by soldering.
In this way, the winding start and end of the winding are the same side, and an even number of layers of the winding are formed, so that the deviation due to the winding being wound in a state inclined (or spiral) with respect to the central axis of the coil 6 can be corrected. I have to.
[0084]
In this way, the winding end is the same side and the winding is composed of an even number of layers, so that the magnetic field gradient caused by the odd layer winding gradient is reversed by the even layer winding gradient. The magnetic field generated and detected by the coil 6 can be realized in a form more consistent with the theoretical value.
[0085]
In the present embodiment, guide grooves 16a and 16b are provided in the connection member 7A so that the lead wire 6a can be passed therethrough. Further, the lead wire 6a is fixed with an adhesive in the guide grooves 16a and 16b. Wiring may be performed along the side surface of the connecting member 7A without passing through the guide grooves 16a and 16b.
[0086]
According to the present embodiment, since the magnetic field generated and detected by the coil device 3E can be realized in a form that more closely matches the theoretical value, the measurement accuracy of the endoscope detection position can be improved. . The other effects are the same as those of the first embodiment.
[0087]
In addition, in the connection member 7A of FIG. 10, you may make it provide the guide groove 32 which guides the signal wire | line 9 in the coil apparatus 3E side arrange | positioned ahead of this coil apparatus 3E. In this case, a similar guide groove 32 may be provided in the connection member 7B.
[0088]
Further, in FIG. 10A, it is assumed that the connecting member 7A side fixed to the right end of the core 5 is arranged in the probe device so that it is closer to the base end side of the probe device than the other connecting member 7B. However, as shown in FIGS. 11A and 11B, the connecting member 7A is fixed to the left end portion of the core 5, that is, the probe device so that the connecting member 7A side is the front end side of the probe device. In the case of being disposed inside, an oblique guide groove 31 for guiding the signal line 9 may be provided in each recess 8 of the connection member 7A.
[0089]
11A and 11B show the connection portion 10 without being formed, FIG. 11A is a side view, and FIG. 10B is a connection member viewed from the left side of FIG. 7A is shown.
[0090]
The guide groove 31 may be used to pass the lead wire 6a at the end of the coil 6. In this case, the guide grooves 16a and 16b are not required.
In FIG. 11B, also in the connecting member 7A, a guide groove 32 for guiding the signal line 9 may be provided on the coil device side disposed in front of the coil device.
[0091]
(Sixth embodiment)
FIG. 12 shows a coil device 3F according to the sixth embodiment. This coil device 3F is the same as the coil device 3E shown in FIG. 10, except that a through hole 21 for fixing the connecting member 22 is provided at the center of the connecting member 7A and the connecting member 7B.
The present embodiment has substantially the same operations and effects as the fifth embodiment.
[0092]
(Seventh embodiment)
FIG. 13 shows a coil device 3G of the seventh embodiment. In the fifth embodiment shown in FIG. 10, the coil device 3 </ b> G of the present embodiment has a structure in which the connection member 7 </ b> B that does not have the recess 8 is not provided. By not providing the connecting member 7B, it is possible to make the size smaller in the longitudinal direction.
The other configuration is the same as that of the fifth embodiment, and the operation and effect thereof are substantially the same as those of the fifth embodiment.
[0093]
FIG. 14 shows a coil device 3H according to a modification of the seventh embodiment. In this modification, in the coil device 3G, a through-hole 21 for fixing the connecting member 22 is provided at the center of the connecting member 7A, and the center position of the end surface of the core 5 opposite to the side to which the connecting member 7A is fixed is also provided. A recess 51 or a hole for fixing the connecting member 22 is provided.
The other configuration is the same as that of the seventh embodiment, and the operation and effect thereof are almost the same as those of the seventh embodiment.
[0094]
(Eighth embodiment)
FIG. 15 shows a coil device 3I according to the eighth embodiment. The coil device 3I of the present embodiment is the same as the coil device 3F of FIG. 12, further provided with a through hole 41 communicating with the connecting member 7A and the through hole 21 of the connecting member 7B, and fixed in place through the long connecting member 4. It is a structure.
The operation and effects of the present embodiment are almost the same as those of the seventh embodiment.
[0095]
When the connecting member 7B is not provided as in the coil device 3G shown in FIG. 13, the connecting member 7A and the core 5 are provided with through holes 21 and 41, respectively, as in the modified coil device 3J shown in FIG. In addition, the structure may be fixed at a predetermined position through the long connecting member 4.
[0096]
In this modification, the coaxial wire 61 is used as a signal line, and the inner conductor 61a is connected to the lead wire 6a by soldering at one concave portion 8 to form the connecting member 10, and the outer conductor 61b is formed at the other concave portion 8. Are connected to the lead wire 6a by soldering to form the connecting portion 10.
[0097]
Further, after the connection portion 10 is formed, the inner conductor 61a and the outer conductor 61b are each wound about once. In this case, the inner conductor 61a and the outer conductor 61b of the portion to be wound are wound in an insulating coating state.
[0098]
By using the coaxial wire 61, it is possible to prevent the generation of an unnecessary magnetic field (when used as a source coil) than when a stranded wire is used. The S / N of the detected signal can be improved. The other operations and effects are the same as those of the seventh embodiment.
[0099]
In addition, in order to prevent unnecessary radiation magnetic field and unwanted radiation noise from being generated and mixed in other embodiments, a coaxial line may be used as a signal line instead of a stranded wire. In addition, you may make it use a shield wire instead of a strand wire.
[0100]
(Ninth embodiment)
FIG. 17 shows a coil device 3K according to the ninth embodiment.
Since the connecting member 7 described above has a larger outer diameter than the core 5, the outer diameter of the probe device becomes thicker, and thus the present embodiment prevents this thickening.
[0101]
For example, as in the coil device 3K shown in FIG. 17, a recess or a hole 71 is provided at the center position of each end face of the core 5, and a part of a cylindrical connecting member 72 made of a hard and non-conductive member is inserted. Then, the lead wire 6a extended from the coil 6 (formed by being wound around the core 5) is wound around the connecting member 72 protruding from each end face of the core 5 and fixed with an adhesive or the like. Wires are wound so as to be adjacent to each other and soldered to form the connection portion 10, and for reinforcement, the signal wire 9 is wound adjacently or on top of each other.
And it is each fixed to the connection member 4 in the predetermined position, and has connected several coil apparatus 3K.
[0102]
In the present embodiment, the inner diameter of the hollow cylindrical portion of the connecting member 72 is large enough to allow the connecting member 4 to pass therethrough, and the core 5 has a through hole that communicates the hollow portions of both connecting members 72.71 isIt is provided so that it can penetrate the long connecting member 4.
The signal line 9 extends in the longitudinal direction of the connecting member 4 so as to be loosely wound around the connecting member 4 so that a stranded wire is formed.
[0103]
According to the present embodiment, a coil device 3K having a smaller outer diameter can be realized.
[0104]
In FIG. 17, the coil 6 is shown as a single layer or an odd layer, but it may be an even layer as in the coil device 3L of the modification shown in FIG. In this case, it is possible to form a structure in which the recess 71 is formed only on one end side which is the winding start and winding end sides of the coil 6 and the connection member 72 is fixed.
[0105]
In addition, as shown in FIG. 18, the lead wire 6a extended from the winding start part and the winding end part of the coil 6 has its insulating coating removed in the vicinity of winding around the connection member 72, and the connection part 10 formed adjacently. And so that no short circuit occurs.
[0106]
In FIG. 18, after the connection portion 10 is formed, the signal line 9 extends to the proximal end side of the probe device so as to be loosely bent, and the play portion is deformed when the endoscope is bent. By doing so, it is possible to prevent a force from being applied to the connection portion 10 via the signal line 9 and to prevent the signal line 9 itself from being disconnected.
In addition, you may make it wind around the connection member 4 loosely similarly to the case of FIG. 17, without forming this play part.
[0107]
In FIG. 18, when the signal line 9 is further wound around the connection portion 10 to be reinforced, the signal line 9 is wound in an insulating coating so that a short circuit does not occur with the adjacent connection portion 10. it can.
[0108]
(Tenth embodiment)
FIG. 19 shows a coil device 3M according to the tenth embodiment. In the coil device 3M of the present embodiment, for example, in the coil device 3J of FIG. 17, the connection member 62 protruding from the core 5 is provided with a convex portion 81, and the lead is provided between the convex portion 81 and the end of the core 5. The wire 6a and the lead wire of the signal wire 9 are wound and positioned, and the structure has a recess that is easy to fix by soldering.
[0109]
Further, in the above-described embodiment and the like, the signal line 9 is further wound and reinforced after the connection part 10 is formed, but in this embodiment, the end part of the signal line 9 is covered with an insulating coating. Is removed, and the portion where the insulation coating is subsequently applied is also wound.
[0110]
In this case, the insulating coating is removed and the end portion is adjacent to the lead wire 6a, and the portion further coated with the insulating coating is wound next to the lead wire 6a, and then the insulating coating is removed by soldering. The end portion is soldered to the lead wire 6a so that the connection portion 10 is formed. In this way, in this embodiment. Since these winding operations can be performed simultaneously, the work process can be reduced.
[0111]
Other operations and effects are the same as those of the ninth embodiment.
In addition, you may make it form a convex part in the connection member 72 also with respect to 3 L of coil apparatuses of FIG.
[0112]
(Eleventh embodiment)
FIG. 20 shows a coil device 3N according to the eleventh embodiment. A coil device 3N according to the present embodiment is formed integrally with a coil device 3L having a structure shown in FIG. 18, for example, by cutting out one end of the core 5 itself around which the coil 6 is wound. is there.
[0113]
In this case, in order to make it the same shape as FIG. 18, it processes using the core 5 longer than the core 5 of FIG. The core 5 is formed of a nonconductive member. Further, in the present embodiment, as in the embodiment of FIG. 19, a convex portion 81 is provided to form a concave portion for fixing the connecting portion 10.
[0114]
By the way, even if the durability is improved in this way and the manufactured probe device 1 or the like is used repeatedly, the signal line or the breakage of the coil can be considered.
[0115]
In addition, since there are variability factors in the manufacturing procedure, it is practical that all the characteristics of the plurality of coil devices 3i (3i, 3, 3A, etc.) are all the same. Nearly impossible.
[0116]
Even if all the characteristics of the coil device 3i are the same, the signal line 9 becomes longer and the length of each signal line 9 becomes longer because it is installed inside a long structure such as the probe device 1 or the like. Therefore, the electrical characteristics measured from the base connector portion are different from each other.
[0117]
Even if an AC signal is applied to the probe device 1 or the like that has been merely electrically connected to the control device or the drive end of the drive signal generation circuit so as to have the same amplitude, the coil device 3i This means that the magnetic field intensity generated by the difference is different.
[0118]
That is, it is necessary to stably add the same energy to the inductance component that contributes to the generation of the magnetic field at the tip in the structure in which the signal line 9 is drawn long like the probe device 1 or the like.
[0119]
A method of adjusting the generated magnetic field to be the same corresponding to each coil device 3i in the probe device 1 etc. is also conceivable. However, in the case of the probe device 1 etc. as described above, It is conceivable that the insertion / extraction of the endoscope into / from the treatment instrument channel or the like and the bending operation are performed, so that the resistance gradually deteriorates and is damaged, and the replacement is unavoidable.
[0120]
Further, when endoscopic treatment is performed on a plurality of patients, it is sufficiently conceivable that a plurality of probe devices 1 are exchanged and connected to one control device in consideration of preparations such as disinfection.
It is virtually impossible to adjust the output of the control device each time.
[0121]
Therefore, characteristics are measured in advance at the manufacturing stage, data for correction is created, the correction data is converted into a bar code, written on the connector 12 portion, read before use, and supplied to each coil device 3i. May be configured to be constant.
[0122]
Further, the characteristics of feedback control of the drive current may be changed when correction is actually performed.
In this case, components such as resistors that are adjusted for correction may be mounted inside the connector 12 that connects the probe device 1 and the control device.
Alternatively, a correction connector in which only passive components for correction are mounted may be created separately from the probe device 1 and connected to the control device in use so that the same magnetic field can be generated. Good.
[0123]
The built-in adjustment parts may be fixed so that the adjusted values do not deviate, and the inside of the connector 12 may be filled with silicon resin or the like.
In most of the embodiments described above, the signal line 9 is further reinforced by winding the signal line 9 around the connection part 10 by each soldering. However, the signal line 9 is loosely wound via the signal line 9. You may make it have the effect | action which prevents that force is added to the connection part 10. FIG.
[0124]
In addition, it has been described that the signal line 9 inserted into the probe portion in which the coil device 3i is arranged is loosened so as to be deformable with respect to bending, but as a specific example, for example in FIG. By extending the signal line 9 extending in the axial direction of the connecting member 22 from 10 in a spiral shape (for example, like a curled cord), the signal line 9 is deformed in the spiral portion even if it is bent. You may make it prevent or reduce that a force is applied to the connection part 10.
[0125]
Further, unlike the spiral shape, the signal line 9 may be inserted in the longitudinal direction of the probe so as to have meandering or play in a sine wave shape or the like so as to have substantially the same function.
[0126]
The signal line 9 fixed at the connection portion 10 or the side of the connection member 7 or the signal line 9 fixed at the guide groove 31 or the like is between the vicinity of the fixed portion or a portion fixed by the adjacent coil device. It is recommended that at least a play portion be formed. With such a structure, when the endoscope is bent, the connection portion 10 can be protected from being deformed by the hard connection member 7 of the coil device, and the signal line 9 is deformed at the play portion and is disconnected. In addition, it is possible to prevent a force from being applied to the connecting portion 10 connected to the signal line 9.
[0127]
For example, in the first embodiment or the like, the lead wire 6a on the end side of the wire forming the coil 6 extends through the side surface of the connecting member 7 and is wound around the recess 8, and the lead wire 6a is The side surface of the connecting member 7 is fixed with an adhesive or the like. Since the connecting member 7 is a hard member, the lead wire 6a may be wound around and fixed to the recess 8 with almost no loosening. Further, when the lead wire 6 a is extended to the concave portion 8 through the guide groove 16 of the connecting member 7, the guide groove 16 may be fixed. However, when the connecting member 7 is slightly deformed, the lead wire 6a may be slightly loosened and fixed so as to be deformable in accordance with the deformation.
[0128]
Note that the present invention can also be applied to the case where only one coil device 3i is disposed at the distal end of an elongated probe device. In this case, it can be used for detecting only a specific position such as the distal end portion of the endoscope (in which the distal end portion of the probe is set) rather than the endoscope shape.
[0129]
For example, in the first embodiment, one wire, for example, a lead wire 6a is wound around the recess 8 and soldered without winding the end of the other signal line 9, so that the connection portion 10 is formed. Accordingly, a signal wire 9 that is loosely wound or formed with a play portion also belongs to the present invention. The soldering includes the case of brazing such as silver brazing.
[0130]
Moreover, what formed the electrical connection part using conductive conductive members, such as a conductive paint, is also included. In this case, it may be further reinforced or fixed by covering with an adhesive or the like.
[0131]
When an endoscope shape is detected using such a coil device, it is necessary to install a detection coil such as a sense coil at a reference position outside the endoscope. Etc. may be fixed to the inspection table.
[0132]
In such a case, the detection range of the endoscope shape is limited, and it may be unclear whether or not the range required when actually performing endoscopy can be covered. desired.
[0133]
For this reason, for example, an inspection in which a plurality of detection coils (specifically, for example, a three-axis coil in which solenoids are formed in three directions so as to have directivity in three orthogonal axis directions disclosed in the above-mentioned publication) Optical sensors are arranged at a plurality of known positions with respect to the table, and further, a light emitting means such as a visible light LED is attached to the tip of the moving arm so that the tip position is freely movable (at an upper position of the inspection table). Install.
[0134]
Then, the light from the visible light LED is received by each optical sensor arranged at a plurality of positions on the inspection table, and each distance from the light intensity to the visible light LED is detected. From this information, the visible light LED A three-dimensional position is estimated, and whether or not the position is within a range that can be detected by a plurality of detection coils is compared. It is preferable to display the reference setting position to be known during the inspection together with the shape of the inspection table on a display panel or the like.
[0135]
In this way, when performing endoscopy, etc., using a moving arm, it is confirmed whether the tip position can detect the endoscope shape, or the patient is placed within the detectable range. It can be an auxiliary means to install. For this reason, endoscopy can be performed smoothly and operability is improved.
[0136]
Note that the present invention includes embodiments formed by partially combining the above-described embodiments and the like.
In addition, the present invention includes structures such as the coil device 3i described above, and also includes an invention of a manufacturing method thereof (for example, contents of appendices 11 to 21).
[0137]
[Appendix]
1. In an endoscope position detection coil device installed in an endoscope inserted into a body cavity and used for detecting an endoscope position using a magnetic field,
A coil used for generating or detecting a magnetic field, a non-conductive member, a wire on an end side where the coil is formed, and a fixing portion for winding and fixing a connection portion with a signal line. An endoscope position detecting coil device.
[0138]
2. The coil apparatus for detecting an endoscope position according to appendix 1, wherein the connecting portion is fixed by applying a non-conductive coating.
3. In an endoscope position detection coil device installed in an endoscope inserted into a body cavity and used for detecting an endoscope position using a magnetic field,
It has a coil used for generation or detection of a magnetic field, a non-conductive member, a wire on the end side on which the coil is formed, and a fixing portion for fixing a connection portion with a signal line. Endoscope position detection coil device.
4). The endoscope position detecting coil device according to appendix 3, wherein the connecting portion is fixed together with a non-conductive coating.
[0139]
5). In an endoscope position detection coil device installed in an endoscope inserted into a body cavity and used for detecting an endoscope position using a magnetic field,
A coil used for generation or detection of a magnetic field, a non-conductive member formed on both ends of the coil, a wire on the end side where the coil is formed, and a fixing portion for fixing a connection portion with a signal line An endoscope position detecting coil device characterized by the above.
6). The coil device for detecting an endoscope position according to appendix 5, wherein the connecting portion is fixed together with a non-conductive coating.
[0140]
7). In an endoscope position detection coil device installed in an endoscope inserted into a body cavity and used for detecting an endoscope position using a magnetic field,
A coil used for generation or detection of a magnetic field, a non-conductive member formed on both ends of the coil, a wire on the end side on which the coil is formed, and a fixing portion for winding and fixing a connection portion with a signal line An endoscope position detecting coil device comprising:
8). The coil device for detecting an endoscope position according to appendix 7, wherein the connecting portion is fixed together with a non-conductive coating.
[0141]
9. In an endoscope position detection coil device installed in an endoscope inserted into a body cavity and used for detecting an endoscope position using a magnetic field,
A coil used for generation or detection of a magnetic field, a wire on the end side on which the coil is formed, and a fixing portion for winding and fixing a connection portion with a signal line, and the fixing portion is a non-conductive member An endoscope position detecting coil device, characterized by being formed.
10. In an endoscope position detection coil device installed in an endoscope inserted into a body cavity and used for detecting an endoscope position using a magnetic field,
A coil used for generating or detecting a magnetic field and wound around a support member, a connection member fixed in a hole provided at an end of the support member, and the coil on the outer peripheral surface of the connection member A coil device for detecting an endoscope position, characterized in that a wire rod and a signal line on the end side are wound and fixed.
[0142]
11. In order to detect the endoscope position, a non-conductive part that can be wound and fixed to a coil created by winding a wire to generate or detect a magnetic field is created, and a coil is formed on this non-conductive part. A method for manufacturing an endoscope position detecting coil, wherein a connection portion between a wiring and a signal line for signal transmission is fixed.
12 In order to detect the position of the endoscope, a non-conductive part that can be wound and fixed to a coil created by winding a wire to generate or detect a magnetic field is created, and coil wiring is connected to this non-conductive part. A method for manufacturing an endoscope position detecting coil, wherein a connecting portion of a signal line for signal transmission is fixed by applying a non-conductive coating.
[0143]
13. In order to detect the endoscope position, a non-conductive member capable of fixing the wire is created on a coil created by winding a wire to generate or detect a magnetic field. A method for manufacturing an endoscope position detecting coil, wherein a connecting portion of a signal line for signal transmission is fixed.
14 In order to detect the endoscope position, a member that can fix the wire is created on the coil that is created by winding the wire to generate or detect a magnetic field. A method for manufacturing an endoscope position detecting coil, wherein a connecting portion of a wire is fixed together with a non-conductive coating.
[0144]
15. In order to detect the endoscope position, a non-conductive member that can fix the wire is fixed to both ends of a coil that is created by winding a wire to generate or detect a magnetic field. A method of manufacturing an endoscope position detecting coil, wherein a connecting portion of a signal line for transmission is fixed.
16. In order to detect the endoscope position, a member that can fix the wire is fixed to both ends of a coil that is created by winding a wire to generate or detect a magnetic field, and this member is used for coil wiring and signal transmission. A method for manufacturing an endoscope position detecting coil, wherein a connecting portion of the signal line is fixed together with a non-conductive coating.
[0145]
17. In order to detect the endoscope position, a non-conductive member capable of winding and fixing a wire rod is fixed to both ends of a coil created by winding a wire rod to generate or detect a magnetic field, and the coil is fixed to the non-conductive member. A method for manufacturing an endoscope position detecting coil, wherein a connection portion between a wiring and a signal line for signal transmission is fixed.
18. In order to detect the endoscope position, a member that can be wound around and fixed to a coil created by winding a wire to generate or detect a magnetic field is fixed, and this member is used for coil wiring and signal transmission. A method for manufacturing an endoscope position detecting coil, wherein a connecting portion of the signal line is fixed together with a non-conductive coating.
[0146]
19. In order to detect the endoscope position, create a part where the wire can be wound and fixed at both ends of the coil created by winding the wire to generate or detect the magnetic field, and the coil wiring and signal lines for signal transmission A method for manufacturing an endoscope position detecting coil, wherein the connecting portion is fixed together with a non-conductive coating.
20. In order to detect the endoscope position, create a part where the wire can be wound and fixed at both ends of the coil created by winding the wire to generate or detect the magnetic field, and this part is made non-conductive and coiled A method for manufacturing an endoscope position detecting coil, wherein a connecting portion of a signal line for signal transmission is fixed.
[0147]
21. In order to detect the endoscope position, a hole for inserting a member for reinforcing the supporting member in the axial direction is formed from both ends of the coil, and the reinforcing member is inserted and fixed in that portion, and soldered to the reinforcing member. A method for manufacturing an endoscope position detecting coil, wherein a soldered portion reinforced by bonding and fixing a portion is connected to a connecting member at both ends, and the connecting member is connected as a support .
[0148]
【The invention's effect】
As described above, according to the present invention, it is possible to realize an endoscope position detecting coil device capable of preventing the occurrence of cutting or the like with respect to bending applied during use and improving durability.
[Brief description of the drawings]
FIG. 1 is a side view showing a probe apparatus provided with a first embodiment of the present invention.
2 is an enlarged cross-sectional view showing a part of FIG.
FIG. 3 is a diagram showing a coil device according to the first embodiment;
FIG. 4 is a side view showing a coil device according to a modification of the first embodiment.
FIG. 5 is a side view showing a probe apparatus provided with a second embodiment of the present invention.
FIG. 6 is a side view showing a part of the coil device according to the second embodiment of the present invention in cross section.
FIG. 7 is a side view showing a connecting member and a connecting member in a modified example of the second embodiment.
FIG. 8 is a side view showing a coil device according to a third embodiment of the present invention.
FIG. 9 is a side view showing a part of a coil device according to a fourth embodiment of the present invention in cross section.
FIG. 10 is a diagram showing a coil device, a connection member, and the like according to a fifth embodiment of the present invention.
FIG. 11 is a side view showing a connection member according to a modification of the fifth embodiment.
FIG. 12 is a side view showing a part of a coil device according to a sixth embodiment of the present invention in cross section.
FIG. 13 is a sectional view showing a coil device according to a seventh embodiment of the present invention.
FIG. 14 is a sectional view showing a coil device according to a modification of the seventh embodiment.
FIG. 15 is a side view showing a part of a coil device according to an eighth embodiment of the present invention in cross section.
FIG. 16 is a sectional view showing a coil device according to a modification of the eighth embodiment.
FIG. 17 is a sectional view showing a coil device according to a ninth embodiment of the present invention.
FIG. 18 is a cross-sectional view showing a coil device according to a modification of the ninth embodiment.
FIG. 19 is a sectional view showing a coil device according to a tenth embodiment of the present invention.
FIG. 20 is a sectional view showing a coil device according to an eleventh embodiment of the present invention.
[Explanation of symbols]
1 ... probe device
2 ... outer tube
3 ... Coil device
4. Connection member
5 ... Core
6 ... Coil
7. Connection member
8 ... recess
9 ... Signal line
10 ... Connection part
12 ... Connector
13 ... Waterproof cap

Claims (6)

In an endoscope position detection coil device that is installed in an endoscope inserted into a body cavity and is used for detection of an endoscope position using a magnetic field,
A coil used to generate or detect a magnetic field;
And a connection member rigid with a fixed part for fixing wound a connecting portion between the wire and the signal Line end side formed with the coil,
The coil device for detecting an endoscope position , wherein the fixing portion is a concave portion provided on an outer surface of the connection member . 2. The endoscope position detecting coil device according to claim 1, wherein the connecting member is configured such that at least a part of an outer diameter thereof is larger than an outer diameter of the coil. A support member that supports the coil and around which the coil is wound;
  The endoscope according to claim 1, wherein the connection member is provided on at least one end portion side of the support member, and is provided with a recess into which the end portion of the support member can be inserted. Coil device for position detection. A support member that supports the coil and around which the coil is wound;
  The connection member is provided on at least one end side of the support member, and a plurality of recesses for fixing the winding start end and winding end end of the wire forming the coil are provided on the one end side. The endoscope position detecting coil device according to claim 1, wherein the endoscope position detecting coil device is provided. A support member that supports the coil and around which the coil is wound;
  The connection members are provided at both ends of the support member, respectively, and one connection member is provided with a recess for fixing the winding start end of the wire forming the coil, and the other connection member is provided with the coil. The coil apparatus for detecting an endoscope position according to claim 1 or 2, further comprising a concave portion for fixing a winding end portion of the wire formed with the wire.   In an endoscope position detection coil device installed in an endoscope inserted into a body cavity and used for detecting an endoscope position using a magnetic field,
  A coil used to generate or detect a magnetic field;
A hard connecting member having a fixing portion for fixing a connecting portion between the wire on the end side forming the coil and the signal line;
The coil member for detecting an endoscope position, wherein the connecting member is provided with a wire groove portion through which the wire is passed on an outer surface.

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