JP3619554B2 - Covered endoscope - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a cover-type endoscope that performs an endoscopic examination by attaching an endoscope cover to a cover endoscope.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, endoscopes used for observing the inside of a human body have been known to be used with a protective tube placed on an insertion portion in order to prevent body fluid or the like from adhering to the insertion portion into a body cavity. For example, Japanese Patent Publication No. 2-54734 shows an example of a cover-type endoscope that is used as an endoscope cover. After using the endoscope, the protective tube is removed and replaced with a new protective tube. Therefore, it can prevent that an insertion part is contaminated, it is not necessary to wash them, and the effort of washing can be saved.
[0003]
Specifically, for example, as shown in FIG. 2 of US Pat. No. 4,809,678, there is one in which the entire insertion portion is covered with a cover provided with a transparent portion on the front surface of the observation optical system. The insertion portion cover and the endoscope insertion portion are fixed by the frictional force of the elastic end provided on the cover side.
[0004]
As shown in FIG. 3 of USP 4,809,678, a replaceable distal end cover is provided at the distal end of the endoscope, and the periphery of the distal end cover is fixed by the frictional force of the elastic end of the insertion portion cover with the distal end opened. There is also. Details regarding the method of fixing the tip cover and the endoscope tip are not described.
[0005]
[Problems to be solved by the invention]
However, conventionally, the hand mouth part (cylinder) of the cover covering the insertion part is fixed to a part of the endoscope operation part or the insertion part hand side by frictional force.
[0006]
In general, since there is a variation in the axial length of the cover and the endoscope insertion portion, the user places the cover proximal mouth portion in the position where the tension of the cover becomes a desired state. Desirable to be friction fixed to a part of the hand side. This is because, if the tension varies, the flexibility, elasticity, and bending function of the insertion portion may vary, and the structure may be hindered.
[0007]
However, if the cover proximal side and the endoscope proximal side are fixed by a frictional force, there is a problem that some external force causes a deviation from the ideal position that was initially fixed.
[0008]
The present invention has been made in view of the above circumstances, and provides a cover-type endoscope that can firmly fix or release a cover hand mouth part to an endoscope hand side by an easy operation. The purpose is to do.
[0009]
[Means and Actions for Solving the Problems]
A cover-type endoscope according to the present invention includes a cover endoscope including an insertion portion and an operation portion, an insertion portion cover that covers at least the insertion portion, and an operation portion fixing mouth portion on the proximal side of the insertion portion cover. In a cover-type endoscope having a part of the operation unitThe raising operation provided at the tip of the insertion portion is performed.By providing a rotation operation member and rotating the rotation operation member, by fixing and releasing a part of the operation portion fixing mouth portion in the rotation direction and the insertion portion longitudinal direction with respect to the operation portion, It is possible to firmly fix or release the cover hand mouth part to the endoscope hand side by an easy operation.
[0010]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0011]
1 to 7 show the present invention.Example1 is a block diagram showing the configuration of a cover-type endoscope, FIG. 2 is a cross-sectional view showing a cross-section of the optical surface of the tip cover of FIG. 1, and FIG. 3 is a view as seen from an arrow A in FIG. 4 is a cross-sectional view showing a cross section taken along line B-B in FIG. 2, FIG. 5 is a cross-sectional view showing the arrangement of a conventional pipe line in the cross section of FIG. 4, and FIG. FIG. 7 is a cross-sectional view showing a cross section of the raising knob in FIG.
[0012]
As shown in FIG.ExampleThe cover-type endoscope 1 is equipped with an endoscope cover endoscope (hereinafter abbreviated as a cover endoscope) 2 constituted by an electronic endoscope, and the cover endoscope 2. An endoscope cover with a channel (hereinafter abbreviated as an endoscope cover) 3 is configured.
[0013]
The cover endoscope 2 includes a flexible insertion portion 4, an operation portion 6 provided at the rear end of the insertion portion 4, a signal processing device, a light source device, and an air supply that extend from the operation portion 6 and are not shown. It is comprised from the universal cable 7 connected to a water feeder.
[0014]
The distal end cover 13 at the distal end of the endoscope cover 3 is provided with a treatment instrument raising base 14. A raising wire 15 is attached to the treatment instrument raising base 14, and a first rack 16 is attached to the proximal side of the raising wire 15.
[0015]
An insertion portion sheath (hereinafter referred to as a sheath) 17 is attached to the distal end cover 13, and a proximal mouth portion 18 (hereinafter referred to as a mouth portion) is attached to the sheath 17. A seal member 19 is provided inside the mouth part 18, and the seal member 19 can air-tightly hold the mouth part 18 and a part of the hand side of the operation part 6 or the insertion part. By being airtight here, the inside of the sheath 17 can be pressurized, and an airtight check can be made as to whether the sheath 17 has a pinhole or the like. An operation unit cover 21 is attached to the mouth part 18. Further, the treatment tool can be guided to the raising base 14 from the treatment tool insertion port 22 of the mouth part 18.
[0016]
An extension part 23 extends from the mouth part 18 toward the operation part 6. A second rack 24 is provided at the end of the extension 23.
[0017]
In addition, although the mouth part 18, the extension part 23, and the 2nd rack 24 may be connected with another body, if it is integrated like a figure, the cost of a cover can be made cheap. Further, the pitches of the concave and convex portions of the first rack 16 and the second rack 24 may be the same or different.
[0018]
The raising wire 15 passes through the sheath 17, the mouth part 18, and the extension part 23, and is connected to the second rack 24 in the extension part 23 (the connection part is outside). If it is not, the connection part can be prevented from coming off due to some external action).
[0019]
The first rack 16 and the raising wire 15 are movable with respect to the mouth portion 18 and the extension portion 23 and the second rack 24, and the raising base 14 can be raised and inverted by moving them. .
[0020]
The operation unit 6 is provided with a shaft 25, and the shaft 25 is provided with a raising knob 26 that can be rotated around the shaft 25. A pinion 27 is provided on a part of the raising knob 26, and the pinion 27 has a convex and concave portion that can mesh with the concave and convex portions of the first rack 16. A claw portion 28 is provided at a position facing the second rack 24 in the vicinity of the raising knob 26. The claw portion 28 has a claw having a shape that can mesh with the second rack 24.
[0021]
As shown in FIG. 2 which is a cross section of the optical surface of the distal end cover 13 in FIG. 1, the distal end constituting portion 29 of the cover endoscope 2 includes an illumination window 30 and an observation window 31, and the illumination window 30 and the observation window A transparent cover 32 is provided on the tip cover 13 at a portion facing the 31. A nozzle 33 capable of discharging a fluid is formed in the vicinity of the observation window 31, a nozzle upper part 34 of the nozzle 33 is formed integrally with the tip cover 13, and a nozzle lower part 35 of the nozzle 33 is formed integrally with the transparent cover 32. . The angle α at which the nozzle 33 faces the surface of the transparent cover 32 on the observation window 31 is preferably about 20 °.
[0022]
As shown in FIG. 3, which is an arrow view seen from the arrow A in FIG. 2, the opening width of the nozzle 33 can be seen from the observation window 31 in the transparent cover 32 and the width d of the visual field range 36 on the upper surface of the transparent cover 32. Are substantially the same (larger than the outer diameter of the observation window 31). In this way, when water is discharged from the nozzle 33, the entire range of the visual field range 36 can be washed.
[0023]
As shown in FIG. 4, which is a cross section taken along line BB perpendicular to the axis behind the optical surface in FIG. 2, the distal end constituting portion 29 is non-rotatable in the endoscope channel 37. On the right side, a treatment instrument pipe line 38, an air supply water pipe line 39, and a wire pipe line 40 are provided.
[0024]
The two air supply water lines 39 (usually one for air supply and the other for water supply) have been conventionally arranged side by side as shown in FIG. In this embodiment, however, the treatment instrument pipe lines 39 are disposed below in an oblique direction so as to avoid side-by-side alignment. Of course, the single air supply water conduit 39 and the wire conduit 40 or the treatment instrument conduit 38 are also arranged in an oblique or vertical positional relationship while avoiding side-by-side. In the sheath 17 (including the curved portion of the cover endoscope 2), the pipes 38, 39, and 40 are formed of tubes, and the tubes are hermetically connected to the pipes 38, 39, and 40. Has been.
[0025]
In FIG. 1, as long as the airtightness check in the sheath 17 is not performed, the seal member 19 may not be airtight between the mouth portion 18 and the operation portion 6, or the seal member 19 itself It may not be.
[0026]
Next, the operation of the cover-type endoscope 1 of the present embodiment configured as described above will be described.
[0027]
When the endoscope cover 3 is attached to the cover endoscope 2, the mouth part 18 is frictionally fixed to a part of the operation part 6 by the seal member 19. Since the lengths of the insertion portions of the cover endoscope 2 and the endoscope cover 3 vary, the mouth portion 18 can be frictionally fixed at an arbitrary position within a fixed range of a certain length of the operation portion 6. The user frictionally fixes the mouth portion 18 at a position where the tension of the sheath 17 and the tubes (the conduits 38, 39, 40, etc.) in the sheath 17 seems appropriate. The amount of frictional fixation is not so heavy (not strong fixation) so that the user can easily perform a sliding operation. However, only by this frictional fixation, when the treatment tool is raised by the raising base 14, that is, when the raising wire 15 in the endoscope cover 3 is strongly pulled, the body 18 is also pulled to some extent. The force is applied and the mouth part 18 is displaced from the initially set position, the tension of the sheath 17 and the tubes in the sheath 17 is changed, and the insertion part function and the treatment instrument raising function are hindered. There is.
[0028]
Therefore, in the case of the present embodiment, the first rack 16 and the second rack 24 at the end of the extending portion 23 extending from the mouth portion 18 are located between the raising knob 26 and the claw portion 28 when the cover is mounted. It is supposed to enter the space. Here, when the raising knob 26 is rotated (raising operation), the unevenness of the pinion 27 of the raising knob 26 is engaged with the unevenness of the first rack 16, and the first rack 16 and the second rack 24 are slightly moved. By pushing downward, the irregularities of the second rack 24 mesh with the claws (or irregularities) of the claw portion 28 as shown in FIG. As a result, while the raising knob 26 is being rotated, the pinion 27 can be rotated while the mouth portion 18 (second rack 24) is firmly fixed to the operating portion 6 (claw portion 28). By moving the first rack 16 back and forth and moving the raising wire 15 back and forth, the raising base 14 can be raised and inverted.
[0029]
FIG. 7 is a cross-sectional view of the raising knob 26 at the time of FIG. 6, but the first rack 16 has a substantially cylindrical shape so that it always meshes with the pinion 27 even if it rotates around its axis. Concavities and convexities are cut around the circumference. The upper portion of the second rack 24 has a concave shape so that the first rack 16 does not slide sideways.
[0030]
In the present embodiment, two claws are provided on the claw portion 28, but the mouth portion 18 can be fixed to the operation portion 6 more securely and securely as the number of claws increases. Moreover, if the number of claws is small, for example, one, the cleaning property of the operation unit 6 is improved. Even in the case where there are a plurality of claws, as in this embodiment, if the distance between the claws is large (2 times, 3 times the uneven pitch of the second rack 24, etc.), the cleaning performance is improved.
[0031]
Although the appearance part of the operation part 6 is made of resin, the claw part 28 may be formed integrally with the operation part 6 in order to reduce the cost. However, in that case, it is necessary to make the material harder than the second rack 24 (which is often a resin). This is because the second rack 24 is on the disposable side, whereas the claw portion 28 is on the loose side, so that it does not wear when used in combination with many covers. Therefore, if the claw portion 28 is separated from the operation portion 6 and is made of metal, it is convenient because it can be made relatively harder than the second rack 24 (resin).
[0032]
The first rack 16 and the second rack 24 are provided longer in consideration of the fixed range of the mouth portion 18 with respect to the operation portion 6. Therefore, the claw portion 28 and the second rack 24 can be engaged with each other regardless of the position where the mouth portion 18 is fixed in the fixing range of the operation portion 6, and the pinion 27 and the first rack 16 can be engaged with each other. The upper operation can be performed.
[0033]
Therefore, according to the cover-type endoscope 1 of this embodiment, the mouth part 18 is firmly fixed to the operation part 6 during the raising operation, and the raising function and the insertion part function (flexibility, elasticity, Property, bending function, etc.).
[0034]
When the insertion portion 4 is bent to the left and right, the conventional structure as shown in FIG. 5 is connected to the air supply water conduit 39 in the sheath 17 because the air supply water conduits 39 are arranged side by side. Since the tube is bulky outside and inside the scope bending portion, a sufficient bending angle cannot be obtained or the bending operation force becomes heavy. In the present embodiment, since the air supply water conduits 39 are arranged so as to avoid side-by-side arrangement, the tubes connected to the air supply water conduits 39 in the sheath 17 are not bulky with each other when bending left and right, and the bending function can be maintained.
[0035]
nextReference examples of the present invention will be described.
First, the first reference exampleWill be described. 8 to 10 areFirst reference exampleFIG. 8 is a block diagram showing the configuration of the cover-type endoscope, FIG. 9 is a cross-sectional view showing a cross section taken along the line CC of FIG.10 is shown in FIG.It is an arrow view seen from the arrow D.
[0036]
As shown in FIG.First reference exampleThe cover endoscope 51 includes a cover endoscope 52 formed of an electronic endoscope, and an endoscope cover 53 to which the cover endoscope 52 is attached.
[0037]
The cover endoscope 52 includes a flexible insertion portion 54, an operation portion 56 provided at the rear end of the insertion portion 54 via a bend stop 55, and a signal processing device (not shown) extending from the operation portion 56. And a universal cable 57 connected to the light source device and the air / water supply device. A distal end configuration portion (not shown) is provided at the distal end portion of the cover endoscope 52.
[0038]
The anti-contamination endoscope cover 53 attached to the cover endoscope 52 includes a sheath 58 that covers the insertion portion 54 of the cover endoscope 52 and a flexible resin such as rubber that covers the folding stop 55. An anti-folding cover 59, an operation unit cover 60 that covers the operation unit 56 and the universal cable 57, and a mouth part (support unit) 61 that is fixed to a part of the operation unit 56 between the anti-folding cover 59 and the operation unit cover 60. It is made up of. All of these parts of the endoscope cover 53 are sterilized in advance before being used for endoscopy, and are discarded after being used for endoscopy.
[0039]
Although not shown, the sheath 58 covers the tip of the insertion portion 55 in an airtight manner. The sheath 58 and the folding cover 59, and the folding cover 59 and the mouth part 61 are hermetically coupled. A seal part 62 is provided in a part of the mouth part 61 so that the mouth part 61 and the operation part 57 can be kept airtight. On the other hand, an air supply conduit 63 is provided in front of the seal portion 62 in the operation portion 57, and air is supplied from an air supply / water supply device (not shown) via the universal cable 57 through the air supply conduit 63, The inside of the sheath 58 and the folding cover 59 can be pressurized, and the airtight check of the sheath 58 can be performed.
[0040]
As shown in FIG. 9 which is a cross-sectional view taken along the line C-C of FIG. 8, a part of the inner wall of the mouth part 61 on the opening of the air supply duct 63 is provided with an air supply groove 64, We are able to do it promptly.
[0041]
As shown in FIG. 10, which is an upper view of FIG. 8, that is, an arrow view seen from the arrow D, a fixing portion 65 extends behind the seal portion 62 of the mouth portion 61. The fixing portion 65 is provided with a fixing groove 66. The operating portion 56 is provided with a pin 67 at a position so as to fit in the fixing groove 66. The pin 67 has a flat shape and can be rotated from a solid line to a broken line. A plurality of holes 68 are formed in the fixing groove 66, and the pins 67 can rotate as shown in FIG.
[0042]
Next, the operation of the cover-type endoscope 51 configured as described above will be described.
[0043]
In FIG. 10, when the cover is inserted, the pin 67 fits into the fixing groove 66 when the mouth part 61 is lifted to a part of the operation part 56 beyond the folding stop 55 (solid line in FIG. 10). The pin 67 is rotated in any hole 68 of the fixing groove 66 (broken line in FIG. 10). Then, it fixes so that the hole 68 of the fixing | fixed part 65 may hardly move with respect to the pin 67 back and forth or a rotation direction. As a result, movement of the mouth part 61 is restricted both in the axial direction and in the rotational direction around the axis with respect to the operation part 56, and the mouth part 61 is not displaced during the inspection and does not hinder the inspection.
[0044]
Therefore,First reference exampleIn the cover-type endoscope 51, the movement restriction of the mouth part 61 is firmly made with respect to the cover endoscope 52, and the mouth part 61 does not move during the inspection, so that the inspection is not hindered.
[0045]
Note that it is difficult to ensure airtightness when such a fixing portion 65 is provided in front of the seal portion 62, and therefore, it is desirable to be behind the seal portion 62.
[0046]
In general, since the length of the insertion portion 54 of the cover endoscope 51 and particularly the length of the endoscope cover 53 in the axial direction are individually different, there are a plurality of holes 68 as shown in FIG. The insertion portion 54 of the endoscope cover 53 can always be attached to the cover endoscope 52 with an appropriate tension. If this tension is not appropriate, for example, the sheath 58 may be too slack, or conversely, too much tension may be applied, and the desired insertion portion function may not be achieved.
[0047]
Further, if the seal portion 62 of the mouth portion 61 has a sufficient friction holding force with respect to the operation portion 56, that is, if it does not move easily in the axial direction, the hole portion 68 of the fixed portion 65 is eliminated. Thus, only the movement in the rotational direction may be restricted only by the fixing groove 66 (or long hole) through which the pin 67 passes.
[0048]
Alternatively, the mouth portion 61 may be firmly fixed to the operation portion 66 by a user turning the screw with a screw (not shown) provided in a part of the operation portion 56 instead of the pin 67.
[0049]
First reference exampleThen, the anti-folding 55 has the function of preventing the insertion portion 54 of the cover endoscope alone, but as shown in FIG. The function of preventing the folding of the insertion portion 54 by the hard mouth portion 61 and the operation portion 56 is also achieved.
[0050]
Therefore, the connecting portion between the insertion portion 54 and the operation portion 56 is prevented from being bent both when the cover is attached and when it is not attached.
[0051]
Although the folding cover 59 is separate from the sheath 58 in FIG. 8, it may be formed so as to widen the end of the sheath 58 and integrated with the sheath 58 (the number of parts is reduced and the cost is reduced). Possible).
[0052]
nextSecond reference exampleWill be described. 11 and 12 areSecond reference exampleFIG. 11 is a cross-sectional view showing a configuration of the bending operation unit of the operation unit, and FIG. 12 is a cross-sectional view showing a configuration of a modification of the bending operation unit of FIG.The second reference example is the first reference exampleTherefore, only different configurations will be described.
[0053]
BookSecond reference exampleAs shown in FIG. 11, shafts 81 and 82 that can rotate in conjunction with a bending control wire (not shown) in the operation unit 56 project from the operation unit 56. The operation unit cover 60 is integrally provided with shaft covers 83 and 84 that are rotatable relative to the operation unit cover 60. Above the shaft 82 is a braking knob 85 that can control the braking of the rotation of the shaft 82, and below the shaft 81 is a braking knob 86 that controls the braking of the rotation of the shaft 81. A knob cover 87 is fixed on the shaft cover 84. The shafts 81 and 82 are polygonal or have a plurality of convex portions and concave portions in the circumferential direction. The shaft cover 83 has a shape that fits the shaft 81 and the shaft cover 84 has a shape that fits the shaft 82 in a non-rotating manner. doing.
[0054]
On the other hand, the bending knobs 88 and 89 are provided separately from the above configuration. The outer peripheral surfaces of the shaft covers 83 and 84 are polygonal or have a plurality of convex portions and concave portions. The bending knob 88 is not rotated on the shaft cover 83 and the bending knob 89 is not rotated on the shaft cover 84. It has a shape that fits.
[0055]
The shaft covers 83 and 84 and the bending knobs 88 and 89 are made of metal, hard resin, rubber, or the like. Although the outer peripheral part of the bending knobs 88 and 89 may be circular, it is easy to operate if there are irregularities on which a plurality of fingers can be hung. Unlike the operation unit cover 60, the shaft covers 83 and 84, and the knob cover 87, the bending knobs 88 and 89 can be used with a crown. If there are a plurality of variations of the bending knobs 88 and 89 in accordance with the size of the user's hand and the desired shape, the operability for each user can be improved. The knob cover 87 is made of a flexible resin, and the brake knob 85 can be operated through the knob cover 87 while being deformed.
[0056]
Configured like thisSecond reference exampleThen, when the operation unit cover 60 is attached to the operation unit 56, the shaft covers 83 and 84 are connected to the shafts 81 and 82. Next, the bending knobs 88 and 89 are connected to the shaft covers 83 and 84. By doing so, when the bending knobs 88 and 89 are operated, the rotation of the shafts 81 and 82 can be controlled via the shaft covers 83 and 84. Since the bending knobs 88 and 89 can be operated outside the operation unit cover 60, good operability equivalent to that of a non-cover type endoscope can be obtained.
[0057]
When one inspection is completed, the operation unit cover 60 (including the shaft covers 83 and 84) is discarded because it is a disposable, but the bending knobs 88 and 89 are washed because they are loose. If the curved knobs 88 and 89 can be heat sterilized, they can be sterilized in a short time and can be used immediately for the next inspection. In addition, if a plurality of sets of bending knobs 88 and 89 are prepared, the next inspection can be performed using another new bending knobs 88 and 89 while the bending knobs 88 and 89 used in the previous inspection are being cleaned and disinfected. So it is effective. Although the bending knobs 88 and 89 may be disposed integrally with the operation unit cover 60 as a disposable,Second reference exampleSuch a method can reduce the volume of the disposable part, so the cover cost of the disposable can be reduced. Further, since the shaft covers 83 and 84 and the knob cover 87 are integrally provided on the operation unit cover 60, the operation unit cover 60 has no opening, and the cover endoscope 1 can be removed from the external environment even when the cover is attached or detached. Avoid contamination.
[0058]
Therefore, even when the cover is attached and detached, the endoscope is not contaminated and the bending operation can be performed satisfactorily.
[0059]
The configuration of the bending operation unit of the operation unit 56 is not limited to FIG. 11 and may be configured as shown in FIG. That is, as shown in FIG. 12, the bending knobs 88 and 89 are integrally provided on the operation unit cover 60 so as to be rotatable. The shafts 81 and 82 and the brake knob 85 provided in the operation unit 56 in FIG. 11 are shaft units 91 that are separate from the operation unit 56 in FIG. The shaft unit 91 is provided with a frame shaft 92 connected (or integrated) with the shaft 81 and a frame shaft 93 connected (or integrated) with the shaft 82.
[0060]
Inside the operation unit 56 are sprockets 94 and 95 connected to a bending control wire (not shown).
[0061]
Also, a knob cover 87 is detachably provided on the bending knob 89 separately from the above structure.
[0062]
The outer circumferences of the shafts 81 and 82 and the frame shafts 92 and 93 of the shaft unit 91 are polygonal or have a plurality of convex portions and concave portions, and the inner circumferences of the bending knobs 88 and 89 and the sprockets 94 and 95 are the bending knob 88. Are connected to the shaft 81, the bending knob 89 is connected to the shaft 82, the sprocket 94 is connected to the frame shaft 92, and the sprocket 95 is connected to the frame shaft 93.
[0063]
The shaft unit 91 is a Ruth, and the knob cover 87 may be a Ruth or a disposable.
[0064]
In the modification shown in FIG. 12, when the operation unit cover 60 is attached to the operation unit 56, the shaft unit 91 is inserted from the central openings of the bending knobs 88 and 89, and the frame shafts 92 and 93 are attached to the sprockets 94 and 95. Simultaneously with the connection, the shafts 81 and 82 are connected to the bending knobs 88 and 89. Finally, the knob cover 87 is connected to the braking knob 85. By doing so, the appearance and the operability of the bending knobs 88 and 89 are the same as in the example of FIG.
[0065]
In the example of FIG. 11, since the shafts 81 and 82 and the brake knob 85 protrude from the operation portion 56, when the operation portion cover 60 (and the shaft covers 83 and 84) are mounted, the portions that have been protruded are overcome. Therefore, the operation unit cover 60 must have a considerable clearance. However, if the clearance between the operation unit cover 60 and the operation unit 56 is large, the grip feeling of the operation unit may deteriorate or noise may increase due to the influence of slackness of the cover after mounting. In the example of FIG. 12, since the shaft unit is a separate body, the operation unit cover 60 can be attached to the operation unit 56 even if the clearance between the operation unit cover 60 and the operation unit 56 is small, and functions such as gripping feeling after installation. Can be secured.
[0066]
Here, a method for fixing the distal end portion of the endoscope for the cover and the distal end cover at the distal end of the sheath of the endoscope cover will be described with reference to FIGS.
[0067]
13 is a view showing a state in which the distal end cover is firmly fixed to the distal end portion of the endoscope, FIG. 14 is a sectional view showing a section taken along line EE in FIG. 13, and FIG. 15 is a sectional view taken along line FF in FIG. FIG.
[0068]
As shown in FIG. 13, the rotating body 103 is immediately behind the distal end cover 102 at the distal end of the sheath 100 of the endoscope cover, and both the distal end cover 102 and the rotating body 103 are firmly attached to the sheath 100. .
[0069]
As shown in FIG. 14, the distal end portion 101 of the cover endoscope has a D-shaped cross section, and is fitted in the D-shaped hole 104 of the distal end cover 102 in a non-rotating manner. On the other hand, as shown in FIG. 15, the rotating body 103 also has a D-shaped hole 105 having the same shape as the D-shaped hole 104. However, since the D-type hole 105 is offset from the D-type hole 104 by an angle θ around the axis, a part of the rotating body 103 forming the D-type hole 105 is cut into a part of the tip. The front end 101 is firmly fixed to the front end cover 102 by fitting into the notch 106 (FIGS. 13 and 15). It does not come off even when bent.
[0070]
When the tip 101 is removed from the tip cover 102 or inserted from the above state, the rotating body 103 is rotated clockwise by an angle θ so that the D-type hole 105 is aligned with the D-type hole 104. When the hand is released from the rotating body 103, the rotating body 103 naturally becomes as shown in FIG.
[0071]
Therefore, the endoscope distal end portion and the cover distal end portion can be firmly fixed or released with an easy operation.
[0072]
[Appendix]
(Additional Item 1) The insertion portion cover includes a treatment instrument raising device,
The rotation operation member is a treatment instrument raising operation knob, and the treatment instrument raising operation knob is connected to the treatment instrument raising device by rotating the treatment instrument raising operation knob. Fixed the operating part fixing mouth part
The cover type endoscope according to claim 1.
[0073]
(Additional Item 2) The fixing of the operation unit fixing mouth part of the operation unit is as follows.
The convex portion or concave portion provided in the operation portion is fixed by engaging with the concave portion or convex portion provided in the operation portion fixing mouth portion.
The cover-type endoscope according to additional item 1.
[0074]
(Additional Item 3) There are a plurality of the convex portions or the concave portions provided in the operation portion.
The cover type endoscope according to additional item 2.
[0075]
(Additional Item 4) The number of the convex portions or the concave portions provided in the operation portion is one.
The cover type endoscope according to additional item 2.
[0076]
(Additional Item 5) The convex portion or the concave portion of the operation portion is formed integrally with the operation portion.
The cover type endoscope according to additional item 2.
[0077]
(Additional Item 6) The convex portion or the concave portion of the operation portion is provided separately from the operation portion.
The cover type endoscope according to additional item 2.
[0078]
(Additional Item 7) The convex portion or the concave portion of the operation portion is made of a material harder than the concave portion or the convex portion of the operation portion fixing mouth portion.
The cover type endoscope according to additional item 2.
[0079]
(Additional Item 8) There are a plurality of the concave portions or the convex portions of the operation portion fixing mouth portion, and the axial length of the concave portion or the convex portion is for the cover of the operation portion fixing mouth portion. It is more than the fixed range to the endoscope
The cover type endoscope according to additional item 2.
[0080]
(Additional Item 9) The treatment instrument raising operation knob has a plurality of uneven portions,
The hand side connection portion of the treatment instrument raising device has a plurality of uneven portions,
The treatment instrument raising operation knob and the treatment instrument raising device are connected by engaging the plurality of irregularities with the plurality of irregularities.
The cover-type endoscope according to additional item 1.
[0081]
(Additional Item 10) There are a plurality of positions where the operation unit fixes the operation unit fixing mouth part.
The cover type endoscope according to claim 1.
[0082]
(Additional Item 11) The operation unit fixes the operation unit fixing mouth part also in the rotation direction.
The cover type endoscope according to claim 1.
[0083]
(Additional Item 12) A cover endoscope including an insertion portion and an operation portion;
An endoscope cover having an insertion portion cover for covering the insertion portion and an operation portion cover for covering the operation portion;
In a cover-type endoscope comprising:
A bending operation shaft projecting from the operation section;
A shaft cover provided integrally with the operation unit cover, rotatable with respect to the operation unit cover, and coupled to a bending operation shaft;
With
The operation section and a bending knob separate from the operation section cover are detachably connected to the shaft cover.
Cover type endoscope.
[0084]
Conventionally, it is difficult to operate because a cover is put on the endoscope operation unit and the bending knob on the operation unit is operated from above the cover. In addition, if the bending knob etc. is detachable from the operation part and is connected to the operation part from outside the cover of the operation part, an opening will be created in the operation part. If there is, there is a possibility that the endoscope is contaminated from the opening when the cover is attached to or detached from the endoscope.
[0085]
In the cover-type endoscope of Additional Item 12, a fixing member that is rotatable with respect to the cover and that can be connected to a shaft member that controls bending or the like provided in the operation unit is provided on a part of the cover that covers the operation unit. An operation member that can be connected to the rotation member is provided, the rotation member is connected to the shaft member of the operation unit, the operation member is connected to the rotation member, and the operation member is operated to operate as the cover rotation member. It is possible to control the shaft member of the part (control of bending or the like).
[0086]
(Additional Item 13) The detachable bending knob is a crown.
The cover type endoscope according to additional item 12.
[0087]
(Additional Item 14) The curved knob is heat sterilizable.
The cover type endoscope according to additional item 13.
[0088]
(Additional Item 15) There are a plurality of the shaft cover and the bending knob.
The cover type endoscope according to additional item 12.
[0089]
(Additional Item 16) A plurality of types of the bending knobs can be attached to and detached from one shaft cover.
The cover type endoscope according to additional item 12.
[0090]
(Additional Item 17) There is a braking knob at the top of the bending operation shaft,
A brake knob cover that covers the brake knob is provided on the top of the shaft cover.
The cover type endoscope according to additional item 12.
[0091]
(Additional Item 18) The vicinity of the shaft cover of the operation unit cover has no opening.
The cover type endoscope according to additional item 12.
[0092]
(Additional Item 19) An endoscope for a cover including an insertion portion and an operation portion;
A treatment instrument insertion conduit, a treatment instrument raising wire conduit, and a plurality of air supply water conduits, and an insertion portion cover that covers the insertion portion;
In a cover-type endoscope having
The plurality of air supply water conduits are arranged in the insertion portion cover so that the plurality of air supply water conduits are not arranged side by side.
Cover type endoscope.
[0093]
In a conventional cover-type endoscope, if two pipes are arranged side by side, when the tip is bent to the left and right, the two pipes are bulky and the desired bending angle does not appear or becomes heavy. I was doing.
[0094]
In the cover type endoscope according to the supplementary item 19, by arranging the two air supply water pipes in the cover so as to avoid the side-by-side arrangement, the two do not become bulky even when bent left and right, and it is good. It is possible to keep the bending function.
[0095]
(Additional Item 20) The treatment instrument raising wire conduit and the treatment instrument insertion conduit are disposed above or below the plurality of air supply water conduits.
The cover type endoscope according to additional item 19.
[0096]
(Additional Item 21) The plurality of air supply water conduits are arranged so as not to be side by side with the treatment instrument insertion conduit and the treatment instrument raising wire conduit.
The cover type endoscope according to additional item 19.
[0097]
(Additional Item 22) The plurality of air supply water conduits are arranged obliquely to each other.
The cover type endoscope according to additional item 19.
[0098]
(Additional Item 23) The above arrangement is made at the front end of the cover of the insertion portion cover.
The cover type endoscope according to additional item 19.
[0099]
【The invention's effect】
As described above, according to the cover-type endoscope of the present invention, provided in a part of the operation unit,The raising operation provided at the tip of the insertion portion is performed.The rotary operation member is rotated and a part of the operation unit fixing mouth part is fixed and released with respect to the operation part in the rotation direction and the insertion part longitudinal direction. There is an effect that it can be firmly fixed or released to the proximal side of the endoscope.
[Brief description of the drawings]
FIG. 1 of the present inventionExampleThe block diagram which shows the structure of the cover type endoscope which concerns on
2 is a cross-sectional view showing a cross section of an optical surface of the tip cover in FIG. 1;
FIG. 3 is an arrow view seen from arrow A in FIG.
4 is a cross-sectional view showing a cross section taken along line BB in FIG. 2;
5 is a cross-sectional view showing the arrangement of a conventional pipe line in the cross section of FIG. 4;
6 is an explanatory diagram for explaining the operation of the cover-type endoscope of FIG. 1. FIG.
7 is a cross-sectional view showing a cross section of the raising knob in FIG. 6;
FIG. 8 shows the present invention.First reference exampleThe block diagram which shows the structure of the cover type endoscope which concerns on
9 is a cross-sectional view showing a cross section taken along the line CC of FIG.
FIG. 10 is an arrow view seen from the arrow D in FIG.
FIG. 11 shows the present invention.Second reference exampleSectional drawing which shows the structure of the bending operation part of the operation part which concerns on
12 is a cross-sectional view showing a configuration of a modified example of the bending operation unit in FIG. 11;
FIG. 13 is a diagram showing a state in which the distal end cover is firmly fixed to the distal end portion of the endoscope.
14 is a cross-sectional view showing a cross section taken along line EE in FIG. 13;
15 is a cross-sectional view showing a cross section taken along line FF in FIG. 13;
[Explanation of symbols]
1 ... Cover type endoscope
2. Endoscope for cover
3. Endoscope cover
4 ... Insertion section
5 ... Folding prevention
6 ... Operation part
7 ... Universal cable
13 ... Tip cover
14 ... Treatment device raising stand
15 ... Raising wire
16 ... first rack
17 ... Insertion section sheath
18 ... Mouth body
19 ... Sealing member
21. Operation unit cover
22 ... Treatment tool insertion port
23 ... Extension part
24. Second rack
25 ... axis
26 ... Raise knob
27 ... Pinion
28 ... nail part
29 ... tip component
30 ... Lighting window
31 ... Observation window
32 ... Transparent cover
33 ... Nozzle
34 ... Upper part of nozzle
35 ... Lower part of nozzle
36 ... View range
37 ... Endoscope channel
38 ... treatment instrument pipeline
39 ... Air supply pipe
40 ... Wire conduit
51 ... Cover type endoscope
52. Endoscope for cover
53 ... Endoscope cover
54. Insertion part
55 ... Fold off
56: Operation unit
57 ... Universal cable
58 ... Sheath
59 ... Folding prevention cover
60. Operation unit cover
61 ... Mouth body
62 ... Seal part
63 ... Air supply pipeline
64 ... Groove for air supply
65. Fixing part
66 ... Fixing groove
67 ... pin
68 ... hole

Claims (1)

A cover endoscope comprising an insertion portion and an operation portion;
An insertion portion cover covering at least the insertion portion;
An operating portion fixing mouth portion on the proximal side of the insertion portion cover,
In a cover-type endoscope having
A rotation operation member that performs a raising operation of a raising table provided at a tip of the insertion portion is provided in a part of the operation portion,
A cover-type internal view characterized in that a part of the operation portion fixing mouth portion is fixed and released in a rotation direction and an insertion portion longitudinal direction with respect to the operation portion by rotating the rotation operation member. mirror.

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