JP4451453B2 - Endoscope treatment instrument insertion / extraction system - Google Patents

Description

  The present invention relates to an endoscope treatment tool insertion / extraction system for automatically inserting / removing treatment tools such as forceps, a catheter, and a high-frequency knife inserted into a body cavity via a forceps channel of an endoscope.

Conventionally, when a treatment tool such as a forceps is inserted into a body cavity via a forceps channel of an endoscope, an operator inserts the treatment tool into the forceps channel while holding the treatment tool with his / her hand. However, for example, since an endoscope for large intestine has a total length of 2 m, it takes time to insert a treatment tool, and treatment work such as biopsy is extremely troublesome.
In order to reduce this effort, there has been proposed an endoscope provided with an insertion / extraction device for inserting / removing a treatment tool inserted from a treatment tool insertion port of the endoscope (see, for example, Patent Document 1).
In addition, an insertion / removal device is proposed that includes an insertion / removal unit that stores and holds a plurality of treatment instruments in individual storage units and inserts / removes them from / to the forceps channel of the endoscope, and an operation unit of the treatment unit disposed at the distal end of the treatment instrument (For example, see Patent Document 2).
JP-A-57-117823 (FIG. 1) JP 2000-207 A (Figs. 1, 3, 6, 7)

However, in the endoscope with the treatment instrument insertion / extraction device according to Patent Document 1, the operator or the like holds the base of the treatment instrument that is outside the treatment instrument insertion port while the insertion / extraction device inserts / remove the treatment instrument. Must support it.
The insertion / extraction apparatus according to Patent Document 2 is large-scale, and the treatment instrument case shown in FIG. 3 has a motor embedded therein and is complicated and expensive. In addition, in the insertion / extraction unit shown in FIGS. 6 and 7, the insertion portions of the plurality of treatment tools are exposed, and when the endoscope is moved, the insertion portions of the treatment tools swing and are troublesome. Further, since the opening / closing unit is disposed as shown in FIG. 7, the force to be inserted as the treatment instrument is inserted into the forceps channel is applied to the operation part of the treatment instrument, and an excessive force may be applied to the treatment instrument. was there.

  The present invention has been made in view of the above circumstances, and it is not necessary for an operator or the like to support the treatment tool when inserting or removing the treatment tool, and it is possible to easily insert and remove the treatment tool by suppressing an excessive load on the treatment tool. An object of the present invention is to provide a treatment instrument insertion / extraction system for an endoscope which is compact and inexpensive.

The present invention employs the following means in order to solve the above problems.
An endoscope treatment tool insertion / extraction system according to the present invention includes a first treatment tool and a second treatment tool that can be inserted into and removed from a forceps channel of an endoscope, and a first that can wind the first treatment tool. A first insertion / extraction mechanism having a rotating member and capable of feeding or pulling back the first treatment instrument into the forceps channel by rotating the first rotation member, and winding the second treatment instrument A second inserting / extracting mechanism that has a second rotating member capable of rotating the second rotating member so that the second treatment tool can be sent out or pulled back into the forceps channel; and the first rotating member And a common driving unit that supplies a driving force for rotating the second rotating member , and a selection for selectively engaging the driving unit with either the first insertion / extraction mechanism or the second insertion / extraction mechanism And a mechanism.

  According to the present invention, even in an endoscope having one forceps channel and one drive unit, two treatment tools can be easily inserted and removed. At this time, any one treatment instrument can be selected and inserted / removed. Moreover, it is not necessary to support by hand at the time of insertion / extraction, the possibility that an excessive load is applied to the treatment instrument due to manual operation can be further reduced, and the insertion / extraction of the treatment instrument can be performed easily.

  Further, the present invention is the endoscope treatment instrument insertion / extraction system, wherein the first treatment instrument, the second treatment instrument, the first insertion / extraction mechanism, and the second insertion / extraction mechanism are arranged. A treatment tool unit is provided.

  Further, the present invention is the endoscope treatment instrument insertion / extraction system, wherein the selection mechanism is configured such that the drive unit can be engaged with either the first insertion / extraction mechanism or the second insertion / extraction mechanism. It is characterized by turning.

  Further, the present invention is the endoscope treatment instrument insertion / extraction system described above, wherein the drive unit is provided in the endoscope.

  Further, the present invention is the endoscope treatment instrument insertion / extraction system described above, wherein the drive unit includes a power source, and the power source is built in a light source device connected to the endoscope. To do.

  Further, the present invention is the endoscope treatment instrument insertion / extraction system described above, wherein the drive unit includes a power source, and the power source is built in an operation unit of the endoscope.

Further, the present invention is the endoscope treatment tool insertion / extraction system described above, wherein the drive unit includes a motor.
In the present invention, the first insertion / extraction mechanism and the second insertion / extraction mechanism are engaged with the driving unit to convert the driving force of the driving unit into a rotational force, and the first rotating member and the first You may each have the conversion mechanism transmitted to a 2 rotation member.

  According to the present invention, according to the endoscope treatment instrument insertion / extraction system, since the treatment instrument unit is engaged with the endoscope, it is not necessary to support the treatment instrument when the treatment instrument is inserted / removed. It is easy to insert and remove the treatment tool without being damaged, and can be made compact and inexpensive. In addition, an operator who operates the endoscope can also operate the treatment tool.

An embodiment according to the present invention will be described with reference to FIGS.
The endoscope treatment instrument insertion / extraction system 53 according to this embodiment includes a treatment instrument unit 55.
The treatment instrument unit 55 includes a first insertion / extraction mechanism 56A, a second insertion / extraction mechanism 57A, and a cassette 58 for storing them. The first insertion / extraction mechanism 56 </ b> A includes a bobbin 56, and the second insertion / extraction mechanism 57 </ b> A includes a bobbin 57.

  The cassette 58 includes two chambers 61 and 62 separated by a partition 60. The bobbins 56 and 57 are rotatably supported by chamber projections 67 formed in the partition 60 and projecting inside the chambers 61 and 62, respectively.

The bobbins 56 and 57 are provided with large outer diameter portions 56a and 57a at one end and small outer diameter portions 56b and 57b at the other end, respectively, with an outer diameter smaller than the small outer diameter portions 56b and 57b. Formed winding portions 56c and 57c are provided.
On the periphery of the large outer diameter portions 56a and 57a, teeth 56d and 57d formed in an uneven shape on the inner peripheral surface are formed over the entire circumference.
The teeth 56d and 57d are arranged to face each other, and the first biopsy forceps (first treatment tool) 68 and the second biopsy forceps (first tool) included in the treatment tool unit 55 are disposed in the winding portions 56c and 57c, respectively. The insertion portions 71 and 72 included in each of the two treatment tools 70 are wound in opposite directions.

  The vicinity of the distal ends of the insertion portions 71 and 72 is arranged toward a treatment instrument inlet / outlet 76 connected to the lower side of the cassette 58 by rollers 73 and 75 rotatably provided at the lower portion of the cassette 58. The forceps operation unit 37 connected to the proximal ends of the insertion portions 71 and 72 in the first biopsy forceps 68 and the second biopsy forceps 70 includes a slider 37a, and the small outer diameter portions 56b of the bobbins 56 and 57, It is embedded in the side surface of 57b in a state of passing through the cassette 58 and exposed to the outside.

A separation body 77 extending from the partition 60 of the cassette 58 is disposed inside the treatment instrument inlet / outlet 76, and outlets 61 a and 62 a of the chambers 61 and 62 merge below the separation body 77.
A groove 78 is formed above the cassette 58, and the side surfaces 78a and 78b of the groove 78 are open so that a part of the teeth 56d and 57d is exposed.
The groove 78 is provided with a motor turning hole 79.

  The endoscope 80 to which the treatment instrument unit 55 of the endoscope treatment instrument insertion / extraction system 53 is engaged is an engagement portion 81 that supports a motor (drive unit) 12 that is disposed so as to be engageable with the treatment instrument unit 55. Is provided. The operation portion 82 is provided with a forceps port 10 communicated with the forceps channel 2, and an engaging portion 81 is arranged above the forceps port 10 at a distance that allows the treatment instrument unit 55 to be disposed.

  The engaging portion 81 is provided with a selection mechanism 81A for selecting and inserting / removing either the first biopsy forceps 68 or the second biopsy forceps 70. The selection mechanism 81A includes a motor 12, a rotating shaft 12a of the motor 12, a pin 83 that pivotally supports the motor 12 on the axis of the forceps port 10, a handle 85 provided at the end of the motor 12, A motor gear 86 is provided that can be engaged with the teeth 56d of the first insertion / extraction mechanism 56A and the teeth 57d of the second insertion / extraction mechanism 57A, and is provided at the tip of the rotating shaft 12a of the motor 12.

  The operation unit 82 is connected to the light source device 13 that supplies light to the endoscope 80 via the universal cord 15, and the motor 12 is connected to a motor drive power source (power source) 16 provided in the light source device 13. It is connected via a wiring 17 in the universal cord 15. The motor drive power supply may be a battery or the like built in the operation unit.

  Further, the operation unit 82 is provided with, for example, a first switch 18 that rotates or stops the motor 12 to the right and a second switch 20 that rotates or stops the motor 12 to the left. Each of the switches 18 and 20 is turned on in the depressed state, rotates the motor in each direction, and is in a stopped state when released.

Next, an operation method of the endoscope treatment tool insertion / extraction system 53 according to the present embodiment will be described.
After inserting the endoscope 80 into the body cavity, as shown in FIG. 4, the treatment instrument entrance / exit 76 of the treatment instrument unit 55 is attached to the forceps port 10, and the motor gear 86 of the motor 12 is connected to the motor turning hole of the treatment instrument unit 55. 79. As a result, the treatment instrument unit 55 is attached to the endoscope 80 as shown in FIG.

  Next, as shown in FIG. 5B, when the first biopsy forceps 68 is used, if the handle 85 of the motor 12 that is the selection mechanism 81A is operated and tilted to the right, the motor 12 is moved around the pin 83. The motor gear 86 meshes with the teeth 56d of one bobbin 56 of the treatment instrument unit 55.

  At this time, when the first switch 18 of the endoscope 80 is pressed, the motor 12 rotates to the right, for example, and the motor gear 86 transmits the rotation to the teeth 56d, via which the bobbin 56 is shown in FIG. To rotate clockwise. As a result, the first biopsy forceps 68 is inserted into the forceps channel 2 of the endoscope 80.

  While observing with the endoscope 80, when the appropriate position is reached, the first switch 18 of the endoscope 80 is released, the rotation of the motor 12 is stopped, and the movement of the first biopsy forceps 68 is stopped. When opening / closing the first biopsy forceps 68, the forceps operating portion 37 is taken out from the bobbin 56 and operated.

  When removing the first biopsy forceps 68, the second switch 20 of the endoscope 80 is pressed to rotate the motor 12 in the reverse (left) direction. As a result, the insertion portion 71 of the first biopsy forceps 68 is wound around the bobbin 56 by rotating the bobbin 56 opposite to the time of insertion, and the second switch is removed when the bobbin 56 is removed from the forceps channel 2 of the endoscope 80. 20 is released and the motor 12 is stopped.

  Next, the second biopsy forceps 70 is inserted. As shown in FIG. 5C, when the handle 85 of the motor 12 of the selection mechanism 81A is operated and tilted to the left, the motor 12 turns around the pin 83 and the motor gear 86 is moved to the other bobbin of the treatment instrument unit 55. It meshes with 57 teeth 57d.

  At this time, when the first switch 18 of the endoscope 80 is pressed, the motor 12 rotates to the right, for example, and the motor gear 86 transmits the rotation to the teeth 57d, via which the bobbin 57 is shown in FIG. Rotate left. As a result, the second biopsy forceps 70 is inserted into the forceps channel 2 of the endoscope 80.

Observation with the endoscope 80, when the second biopsy forceps 70 is in an appropriate position, the first switch 18 of the endoscope 80 is released to stop the rotation of the motor 12, and the second biopsy forceps 70 Stop moving. The operation of the second biopsy forceps 70 is the same as that of the first biopsy forceps 68.
When the second biopsy forceps 70 is removed from the forceps channel 2, similarly to the first biopsy forceps 68, the motor 12 is moved to the center when the second biopsy forceps 70 is removed from the forceps channel 2, and the treatment instrument unit. 55 is removed from the endoscope 80.

  According to the endoscope treatment tool insertion / extraction system 53, two treatment tools can be selectively and easily inserted into and removed from one forceps channel. At this time, any one treatment instrument can be selected and inserted / removed. Moreover, it is not necessary to support by hand at the time of insertion / extraction, the possibility that an excessive load is applied to the treatment instrument due to manual operation can be further reduced, and the insertion / extraction of the treatment instrument can be performed easily.

  The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

It is a perspective view which shows the treatment tool unit which concerns on one Embodiment of this invention. It is sectional drawing which shows the treatment tool unit which concerns on one Embodiment of this invention. It is (a) GG of FIG. 2, (b) HH sectional drawing. It is explanatory drawing which shows the operating method of the endoscope treatment tool insertion / extraction system which concerns on one Embodiment of this invention. (A)-(c) It is sectional drawing which shows the time of operation of the treatment tool unit which concerns on one Embodiment of this invention.

Explanation of symbols

2 Forceps channel 10 Forceps port 12 Motor (drive unit)
13 Light source device 16 Motor drive power source (power source)
53 Endoscopic treatment instrument insertion / extraction system 55 Treatment instrument units 56, 57 Bobbin 56A First insertion / extraction mechanism 57A Second insertion / extraction mechanism 68 First biopsy forceps (first treatment instrument)
70 Second biopsy forceps (second treatment tool)
81A selection mechanism

Claims (8)

A first treatment tool and a second treatment tool that can be inserted into and removed from the forceps channel of the endoscope;
A first rotating member capable of winding the first treatment instrument, and rotating the first rotation member to deliver or retract the first treatment instrument into the forceps channel; An insertion / extraction mechanism;
A second rotating member capable of winding the second treatment instrument; and rotating the second rotating member to deliver or retract the second treatment instrument into the forceps channel. An insertion / extraction mechanism;
A common driving unit for supplying a driving force for rotating the first rotating member and the second rotating member ;
A selection mechanism for selectively engaging said drive unit in any one of the first insertion mechanism or the second insertion mechanism,
A treatment instrument insertion / extraction system for an endoscope, comprising:   2. The treatment instrument unit according to claim 1, further comprising a treatment instrument unit on which the first treatment instrument, the second treatment instrument, the first insertion / extraction mechanism, and the second insertion / extraction mechanism are arranged. Endoscope treatment tool insertion / extraction system.   2. The endoscope treatment according to claim 1, wherein the selection mechanism pivots so that the drive unit can be engaged with either the first insertion / extraction mechanism or the second insertion / extraction mechanism. Instrument insertion / extraction system.   The endoscope treatment instrument insertion / extraction system according to claim 1, wherein the driving unit is provided in the endoscope.   2. The endoscope treatment tool insertion / extraction system according to claim 1, wherein a power source of the driving unit is built in the light source device connected to the endoscope.   The endoscope operation instrument insertion / extraction system according to claim 1, wherein a power source of the driving unit is built in the operation unit of the endoscope.   The endoscopic treatment instrument insertion / extraction system according to claim 1, wherein the driving unit includes a motor. The first insertion / extraction mechanism and the second insertion / extraction mechanism are engaged with the drive unit, convert the drive force of the drive unit into a rotational force, and transmit the rotational force to the first rotation member and the second rotation member. The endoscope treatment tool insertion / extraction system according to claim 1, further comprising a conversion mechanism.

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