JP2005334332A - Endoscope and endoscope treatment system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the operability of an endoscope from being degraded by optimizing the layout of means for driving a treating implement in the endoscope or an endoscope treatment system where the endoscope is driven electrically. <P>SOLUTION: The endoscope treatment system has the endoscope 1 and the treating implement. The endoscope 1 is equipped with: a first driving means 25 provided with a pair of rollers 27 and 28 in press-contact with the treating implement insertion part 3 of the endoscope; and a second driving means 26 provided with a pair of rollers 35 and 36 in press-contact with the treating implement insertion part 3. Between the first driving means 25 and the second driving means 26, a detouring path 45 made of a spiral tube is arranged, and the treating implement insertion part 3 passing through the second driving means 26 is guided to the first driving means 25 through the detouring path 45. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an endoscope used by being inserted into a body cavity and an endoscope treatment system.

The endoscope has an operation unit that is operated by an endoscope operator, and an insertion unit that is inserted into a body cavity is provided at the distal end of the operation unit. Here, some endoscopes are provided with a motor or the like so that advancement and retraction, bending of an insertion portion, and the like can be performed electrically (see, for example, Patent Document 1).
Further, endoscopes that are capable of performing treatment on a living body by inserting an endoscope treatment tool are known. Some endoscopes of this type are provided with an electric roller in the inside thereof so that a treatment instrument can be inserted electrically (for example, see Patent Document 2). Specifically, a pair of rollers are arranged so as to be in pressure contact with the treatment instrument insertion portion of the treatment instrument, and the rollers are driven by rotation of a motor.

Note that a distal treatment section such as a pair of openable and closable biopsy cups may be provided at the distal end of the treatment instrument insertion section of the treatment instrument. In order to drive such a distal treatment section, treatment is performed. An operation wire is inserted into the tool insertion portion so as to be movable forward and backward. When the distal treatment section has a pair of biopsy cups, an endoscope operator or the like manually opens the pair of biopsy cups when the operation wire is advanced forward toward the distal end, and a pair of biopsy cups when the operation wire is retracted. The biopsy cup is closed.
JP-A-3-268735 JP-A-57-117823

Here, as one of the techniques for quickly performing treatment of a living body with a treatment instrument, there is an electric advancement / retraction of an operation wire of the treatment instrument. However, if the endoscope is provided with a roller for driving the operation wire in addition to the roller through which the treatment instrument insertion portion is inserted, the size of the endoscope is increased, resulting in poor operability of the endoscope treatment system. There was a problem of becoming.
The present invention has been made in view of such circumstances, and an object of the present invention is to drive a treatment instrument in an endoscope or an endoscope treatment system in which the treatment instrument can be electrically driven. It is to prevent the deterioration of the operability of the endoscope by optimizing the arrangement of the means to be operated.

  In the invention according to claim 1 of the present invention for solving the above-described problems, a treatment portion for performing treatment on a living body is provided at the distal end of a treatment instrument insertion portion having a flexible sheath, and the drive portion of the treatment portion is provided with the treatment portion. A treatment instrument insertion channel for inserting a treatment instrument for an endoscope in which an operation wire to be connected is inserted into the sheath so as to be able to advance and retreat, and first driving means for driving the sheath along the treatment instrument insertion channel; A second drive means capable of driving the sheath and the operation wire along the treatment instrument insertion channel; and a path length of the endoscope treatment tool from the first drive means to the second drive means. An endoscope having a detour path to be increased is provided.

  This endoscope uses two driving means to automatically insert and remove the treatment tool electrically or to drive the treatment section. Between the first driving means and the second driving means, A detour route is arranged. The treatment instrument insertion portion is driven to the distal end side of the endoscope by the second driving means, then enters the detour path, passes through the detour path, is guided to the first driving means, and the first driving means Driven again. In addition, after passing the 1st drive means, you may arrange | position so that a detour path and a 2nd drive means may pass in this order.

The invention according to claim 2 is the endoscope according to claim 1, wherein the bypass path includes a curved tubular member through which the sheath and the operation wire can be inserted.
In this endoscope, since the detour path is curved, the length of the treatment portion insertion portion from the first drive means to the second drive means when the treatment instrument is inserted is the same as the first drive means and the second drive means. It becomes longer than the linear distance with the drive means.

The invention according to claim 3 is the endoscope according to claim 1 or 2, wherein the first drive means and the second drive means are arranged along the length direction of the treatment instrument insertion channel. They are arranged in order.
In this endoscope, the first drive means, the detour path, and the second drive means are arranged in this order from the distal end side of the endoscope.

The invention according to claim 4 is the endoscope according to claim 1 or 2, wherein the first drive means and the second drive are arranged in a direction substantially perpendicular to the length direction of the treatment instrument insertion channel. The means are arranged side by side.
This endoscope is arranged so that the first driving means, the detour path, and the second driving means are arranged in the width direction of the endoscope.

According to a fifth aspect of the present invention, in the endoscope according to any one of the first to fourth aspects of the present invention, the driving means for causing the feeding speed of the second driving means to coincide with the feeding speed of the first driving means. An interlocking mechanism is provided.
In this endoscope, when the first drive means sends out the treatment instrument insertion section at a predetermined speed, the second drive means is driven so as to send out the treatment instrument insertion section at the same speed as this speed. For example, when each driving means sends out the treatment instrument insertion portion by rotational driving, the driving means interlocking mechanism is configured to transmit the rotation of the first driving means to the second driving means at the same rotational speed.

According to a sixth aspect of the present invention, in the endoscope according to the fifth aspect of the present invention, a differential mechanism is provided that makes the second driving means differential with respect to the first driving means.
In this endoscope, for example, the second drive unit can be driven in a state where the first drive unit is stopped. When only the operation wire is advanced and retracted by the second driving means, only the treatment section can be driven. The first driving unit may be driven while the second driving unit is stopped.

An invention according to claim 7 is the endoscope according to any one of claims 1 to 6, the endoscope treatment tool, and a housing portion that houses the endoscope treatment tool. An endoscope treatment system, wherein the first drive means, the second drive means, and the accommodating portion are arranged in order along the length direction of the treatment instrument insertion channel. It was.
In this endoscope treatment system, the treatment portion insertion portion pulled out from the housing portion enters the detour path through the second drive means, and passes from the detour path through the first drive means toward the distal end of the endoscope. Sent out.

According to an eighth aspect of the present invention, in the endoscope treatment system according to the seventh aspect, the housing portion is rotatably provided with a reel for winding the treatment instrument for the endoscope, and the reel and the first drive. A reel interlocking mechanism is provided between the first driving means and the reel driving mechanism for matching the reel feeding speed with the feeding speed of the first driving means.
In this endoscope treatment system, the reel can be rotated in conjunction with the drive of the first drive means, so the speed at which the first drive means sends out the treatment instrument insertion portion and the treatment instrument insertion portion is fed out from the reel. The speed matches.

The invention according to claim 9 can accommodate the endoscope according to claim 1 or claim 2, the endoscope treatment tool, and the endoscope treatment tool, and is attached to and detached from the endoscope. An endoscope treatment system, wherein the first drive means and the second drive means are provided in the storage section.
In this endoscope treatment system, each drive means can be separated from the endoscope by providing the first drive means and the second drive means in the housing portion of the treatment instrument.

An invention according to a tenth aspect includes the endoscope according to any one of the first to sixth aspects, and a retractable grasping forceps that is the treatment instrument for the endoscope. The endoscope treatment system is characterized in that the grasping forceps are opened and closed by driving the sheath with a driving means.
In this endoscope treatment system, when only the sheath is retracted by the first driving means, the gripping piece does not move, but the sheath is retracted, so that the gripping piece is relatively exposed to the outside and opened. When only the sheath is advanced by the first driving means from this state, the gripping piece does not move, but is relatively drawn into the sheath and closed.

The invention according to claim 11 is the manual operation means for remotely operating the first drive means and the second drive means in the endoscope treatment system according to any one of claims 1 to 10. It is characterized by providing.
In this endoscope treatment system, by operating with a manual operation means, the treatment tool can be automatically inserted and removed and the treatment portion can be automatically and electrically driven from a remote position.

According to a twelfth aspect of the present invention, the endoscope according to any one of the first to sixth aspects and the operation wire protrude from a proximal end portion of the sheath, and the second drive is provided in the protruded portion. An endoscopic treatment system comprising: the endoscopic treatment tool to which an operation tube that is pressed against the means is attached.
In this endoscope treatment system, when only the second drive means is driven in a state where the treatment tool is inserted through the endoscope, the operation tube advances and retreats, and the operation wire attached to the operation tube advances and retreats. As a result, the treatment unit is driven.

  According to the present invention, when the treatment tool is inserted and removed by the first drive means and the second drive means or the treatment section is driven, the first drive means and the second drive means are provided. Since the treatment instrument insertion portion is inserted through the detour path, the length of the treatment instrument insertion portion inserted between the two drive means can be made longer than the actual distance between the two drive means. For this reason, the distance between both drive means can be set short, and an endoscope and a treatment tool can be reduced in size and weight. Therefore, the operability can be improved and the procedure becomes easy.

The best mode for carrying out the invention will be described in detail with reference to the drawings.
FIG. 1 shows a schematic configuration of an endoscope treatment system according to the first embodiment.
This endoscope treatment system includes an endoscope 1 and a treatment tool 2 inserted through the endoscope.
As shown in FIGS. 1 and 2, the treatment instrument 2 has a flexible treatment instrument insertion portion 3, and the treatment instrument insertion portion 3 is an operation transmission member in a sheath 4 formed of a closely wound coil. An operating wire 5 with a scale is inserted so as to freely advance and retract. A distal treatment section 6 is provided at the distal end of the treatment instrument insertion section 3. The distal treatment section 6 has a support member 7 fixed to the distal end of the sheath 4, and a pair of gripping pieces 8 are rotatably attached to the support member 7. Each gripping piece 8 is connected to the tip of the operation wire 5 through a link mechanism (not shown). As shown in FIG. 2, the operation wire 5 is longer than the sheath 4, and the proximal end portion of the operation wire 5 protrudes from the proximal end portion of the sheath 4, and the operation tube 10 is attached thereto. The operation tube 10 has an outer diameter substantially equal to that of the sheath 4. The distal end portion of the operation tube 10 and the proximal end portion of the sheath 4 are connected by a stretchable elastic member 11. FIG. 2 shows a spring member wound in a coil shape as an example of the elastic member 11.

  Further, as shown in FIG. 1, the endoscope 1 is provided with a housing portion 12 that can wind up the treatment instrument 2. The accommodating part 12 has a configuration in which a reel 14 is rotatably supported in a cassette 13. As shown in FIGS. 3 and 4, the reel 14 is a winding member that winds up the treatment instrument 2 on its outer peripheral surface, and is provided with a collar portion 14 a for preventing the treatment instrument insertion portion 3 from falling off. Pocket members 15 are attached to the outer peripheral surface of the reel 14 at equal intervals in the circumferential direction. The pocket member 15 is a sheet made of a flexible material such as cloth or resin, and is inserted so that the proximal end portion of the treatment instrument insertion portion 3 is sandwiched between the pocket member 15 and the outer peripheral surface of the reel 14. The treatment instrument insertion portion 3 is fixed and prevented from being displaced.

  The endoscope 1 through which such a treatment tool 2 is inserted has a knob 18a operated by an endoscope operator and an operation unit 18 provided with buttons 18b. A flexible insertion portion 19 is provided at the distal end of the operation portion 18. A CCD (charge coupled device) and illumination are provided at the distal end of the insertion portion 19. Furthermore, the distal end of the treatment instrument insertion channel 20 provided in the insertion portion 19 is provided at the distal end of the insertion portion 19. The treatment instrument insertion channel 20 passes through the insertion portion 19 and the operation portion 18 and opens at the proximal end of the operation portion 18. An insertion port 22 for another treatment instrument insertion channel 21 is formed on the side of the operation unit 18. A forceps plug 23 can be attached to the insertion port 22 in order to maintain airtightness. The treatment instrument insertion channel 21 and the insertion port 22 are not essential components.

Here, in the operation unit 18, a first drive unit 25 and a second drive unit 26 for driving the treatment instrument insertion unit 3 of the treatment instrument 2 are provided.
As shown in FIGS. 5 to 7, the first driving means 25 is disposed such that a pair of rollers 27 and 28 sandwich the treatment instrument insertion portion 3. A rotation transmission gear 30 is attached to the rotation shaft 29 of the roller 27, and the rotation transmission gear 30 is engaged with the rotation transmission gear 31. The rotation transmission gear 31 is attached to the rotating shaft 32 of the roller 28, and the rotating shaft 32 is connected with the 1st motor 33 with an electromagnetic brake. Note that a gear box (not shown) is attached to the first motor 33 so that the rotation of the rotary shaft 32 is decelerated to a rotation speed suitable for driving the treatment instrument insertion portion 3. In addition, a rotary encoder 34 is attached to the first motor 33 so that the number of rotations of the first motor 33 can be measured.
The second driving means 26 is disposed so that the pair of rollers 35 and 36 sandwich the treatment instrument insertion portion 3. Rotation transmission gears 39 and 40 are attached to the rotation shafts 37 and 38 of the rollers 35 and 36, respectively. Both the rotation transmission gears 39 and 40 are meshed with each other, and the rotation shaft 38 is connected to the second motor 41. The second motor 41 is disposed on the opposite side of the first motor 33 of the first driving means 25 with the treatment instrument insertion portion 3 interposed therebetween, and includes a gear box (not shown), and the rotation speed is detected by the encoder 42. It can be done. The rotary shaft 37 and the rotary shaft 38 are arranged in parallel, the rotary shaft 37 is arranged coaxially with the rotary shaft 29 of the first drive means 25, and the rotary shaft 38 is rotated by the first drive means 25. It is arranged coaxially with the shaft 32.

  Each of these driving means 25 and 26 is connected to the control unit 43 shown in FIG. The control unit 43 is a processing device that controls each of the driving units 25 and 26 based on information input from any of the switches 18 b of the operation unit 18. The switch 18b rotates the motors 33 and 41 synchronously in the forward direction, and inserts the treatment instrument insertion portion 3 into the treatment instrument insertion channel 20, and reversely rotates the motors 33 and 41 in synchronization with the treatment. A second mode in which the instrument insertion portion 3 is removed from the treatment instrument insertion channel 20 and a third mode in which only the second drive means 26 is driven can be selected. Further, the third mode can be selected from a mode in which the second motor 41 is rotated forward and a mode in which the second motor 41 is rotated backward. The energization of each driving means 25 and 26 is supplied via a universal cord 44 extending from the operation unit 18.

Further, in the operation section 18, a detour path 45 that guides the treatment instrument insertion section 3 driven by the rollers 35 and 36 of the second drive means 26 and sent out from the second drive means 26 to the first drive means 25. Is provided.
The detour path 45 is made of a tube (tubular member) that is curved in a substantially spiral shape. The opening at one end is disposed on the outlet side of the second driving means 26, and the opening at the other end is at the first driving means 25. It is arranged on the entrance side. The length of the detour path 45 is substantially equal to the length by which the distal end of the treatment instrument 2 protrudes from the endoscope 1 and is, for example, 200 mm. The detour path 45 is fixed in the operation unit 18 of the endoscope 1 by a fixing unit (not shown). However, a hole may be provided in the operation unit 18 and this hole may be used as the detour path 45.

The operation of this endoscope treatment system will be described. The treatment instrument 2 is wound around the accommodation section 12 at the proximal end of the treatment instrument insertion portion 3, and the treatment instrument insertion section 3 is inserted in the order of the second drive means 26, the detour path 45, and the first drive means 25. It is assumed that the distal treatment section 6 is closer to the distal end side of the endoscope 1 than the first driving means 25 is.
When the treatment instrument 2 is inserted through the treatment instrument insertion channel 20, the switch 18b is operated to select the first mode. The second motor 41 of the second drive means 26 rotates forward, and the roller 36 rotates in the same direction. The rotation of the motor 36 is transmitted to the roller 35 via the two rotation transmission gears 39 and 40, and as a result, the roller 36 rotates in the opposite direction to the roller 35. The treatment instrument insertion portion 3 pressed between the rollers 35 and 36 by the rotation of the rollers 35 and 36 is sent out toward the distal end side of the endoscope 1, that is, toward the opening of one end portion of the detour path 45. Then, the treatment instrument insertion portion 3 enters the detour path 45 from the opening of the detour path 45, advances in a spiral shape along the detour path 45, exits from the opening of the other end of the detour path 45, and performs the first drive. Guided by means 25. Here, the first motor 33 of the first drive means 25 rotates in the positive direction in synchronization with the second motor 41 of the second drive means 26, and the roller 28 rotates in the same direction as this, and the two rotation transmission gears 30. , 31 rotates in the reverse direction, so that the treatment instrument insertion portion 3 is driven again by the first drive means 25 and moves toward the distal end side of the endoscope 1 along the treatment instrument insertion channel 20. Sent out.

  During this time, the rotary encoder 34 of the first drive means 25 detects the rotation of the first motor 33 and outputs a signal to the control unit 43. The controller 43 counts the number of rotations of the roller 28 based on this signal. Then, the feed amount of the treatment instrument insertion portion 3 is calculated based on the rotation number of the roller 28, and when the feed amount reaches a predetermined value set in advance, the driving means 25 and 26 are stopped. The predetermined value here is, for example, a value corresponding to about 10 mm from the distal end of the endoscope 1. Next, while confirming the position of the distal treatment section 6, it is electrically protruded from the endoscope 1 to a position suitable for treatment. The position at this time is 200 mm at the maximum, and is usually about 20 mm to 50 mm. At this time, the treatment instrument is inserted so that the pair of rollers 27 and 28 of the first drive means 25 are in pressure contact with the sheath 4 and the pair of rollers 35 and 36 of the second drive means 26 are in pressure contact with the operation tube 10. The length of each part of the part 3 is set.

When the distal treatment section 6 is driven in a state where the treatment instrument 2 is inserted through the treatment instrument insertion channel 20, the third mode is selected. The control unit 43 transmits a drive signal only to the second drive unit 26. When the second motor 41 rotates forward, the operation tube 10 is sent out to the distal end side. At this time, since the pair of rollers 27 and 28 of the first driving means 25 is maintained in the stopped state by the electromagnetic brake of the first motor 33, the sheath 4 sandwiched between the rollers 27 and 28 does not move. Therefore, the elastic member 11 contracts, the operation wire 5 connected to the operation tube 10 advances relative to the sheath 4, and the pair of gripping pieces 8 connected to the distal end of the operation wire 5 opens. Thereafter, when the second motor 41 is rotated in the reverse direction, the pair of rollers 35 and 36 moves the operation tube 10 backward. Since the elastic member 11 is restored but the sheath 4 is maintained, only the operation wire 5 is pulled back, and the pair of gripping pieces 8 are closed. The driving amount of the second driving means 26 during this period is performed based on the output signal of the rotary encoder 42 attached to the second motor 41.
When the treatment instrument 2 is removed from the treatment instrument insertion channel 20, the second mode is selected. The motors 33 and 41 of the driving means 25 and 26 are rotated in reverse, and the treatment instrument insertion portion 3 is retracted and removed.

In this embodiment, the treatment instrument 2 is inserted into and removed from the treatment instrument insertion channel 20 by the first drive means 25 and the second drive means 26, and only the second drive means 26 is driven to advance and retract the operation wire 5. Therefore, the distal treatment section 6 can be automatically driven electrically.
Furthermore, since the detour path 45 is provided and the first driving means 25 and the second driving means 26 are arranged close to each other in parallel, the actual both driving means 25 and 26 with respect to the insertion length of the treatment instrument insertion portion 3. Since the distance between them can be shortened, the operation part 18 of the endoscope 1 can be shortened, and the enlargement of the endoscope 1 can be prevented and the operability can be improved. As a comparison, assuming that the first drive unit 25 and the second drive unit 26 are moved back and forth without providing the detour path 45 as in the present embodiment, the treatment tool 2 protrudes from the endoscope 1. Regardless of the amount, in order to drive only the operation tube 10 with the second drive means 26, the distance between the drive means 25, 26 is set to a length corresponding to the maximum protrusion amount of the treatment instrument 2. Since it is necessary, the total length of the endoscope 1 is increased by that distance, and the operability is deteriorated.

Here, as shown in FIG. 8, the motors of the driving means 25 and 26 may be arranged on the same side. The second driving means 26 has a hollow motor 46, and an output shaft (hollow shaft) of the hollow motor 46 is a rotating shaft 47 of the roller 36. The rotary shaft 32 is inserted into the rotary shaft 47 and the hollow motor 46. One end of the rotating shaft 32 is connected to the first motor 33, and the roller 28 of the first driving means 25 is attached to the other end.
In this case, the mechanisms can be made compact while the respective first motors 33, 46 rotate the respective rollers 27, 28, 35, 36 independently.

Further, as shown in FIG. 9, the pair of rollers 27 and 28 of the first drive unit 25 and the pair of rollers 35 and 36 of the second drive unit 26 may be driven by a single motor 48. good.
The motor 48 includes a brake and a gear box (both not shown), and a rotary encoder 42 is attached. The rotation of the motor 48 is transmitted to the rotating shaft 38 of the roller 36 of the second driving means 26, and the rotating shaft 38 is connected to the first driving means via an electromagnetic clutch 49 constituting a driving means interlocking mechanism. The rotary shafts 32 of the 25 rollers 28 are connected. A brake 50 is attached to the rotating shaft 32.
In this case, when inserting / removing the treatment instrument insertion portion 3, the motor 48 is rotated while the electromagnetic clutch 49 is engaged. The rotation of the motor 48 is transmitted to the roller 36 through the rotating shaft 38 and is also transmitted to the rotating shaft 32 through the electromagnetic clutch 49, and the roller 28 is rotated. As a result, the driving means 25 and 26 are driven in synchronization. When only the distal treatment section 6 is driven, the electromagnetic clutch 49 is disengaged and only the second drive means 26 is driven. At this time, by operating the brake 50, the rollers 27 and 28 are stopped and the movement of the sheath 4 is prevented.

Further, as shown in FIGS. 10 and 11, the first drive means 25 and the second drive means 26 are arranged along the length direction of the endoscope 1, and a detour path is provided between the drive means 25 and 26. 45 may be provided. The detour path 45 is formed of a spiral tube, and an opening on one end side thereof is disposed between the pair of rollers 27 and 28 of the first driving means 25, and an opening on the other end side is a pair of the second driving means 26. Between the rollers 35 and 36.
If the drive means 25 and 26 and the detour path 45 are arranged in this way, the distance between the drive means 25 and 26 can be shortened by the length of the detour path 45, and the above-described effect can be obtained.

Next, a second embodiment of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same component as 1st Embodiment. Moreover, the description which overlaps with 1st Embodiment is abbreviate | omitted.
As shown in FIGS. 12 and 13, the first drive means 25 and the second drive means 26 of this endoscope treatment system are displaced in the axial direction of the rotation shafts 29 and 38 and are aligned in the insertion / removal direction. They are arranged side by side so as to overlap. In addition, a bypass path 45 that increases the path length of the treatment instrument 2 is disposed between the first drive means 25 and the second drive means 26.

  Here, the first motor 33 of the first drive means 25 is disposed on the same side as the second motor 41 of the second drive means 26 with respect to the treatment instrument insertion portion 3. A bevel gear 51 is attached to the end of the rotating shaft 29 of the roller 27 on the driven side of the first driving means 25. The bevel gear 51 is meshed with a bevel gear 53 of a drive transmission unit 52 that is a reel interlocking mechanism. The drive transmission part 52 has the rotating shaft 54 to which the bevel gear 53 was attached to one end. The rotating shaft 54 is disposed substantially parallel to the insertion / extraction direction of the treatment instrument 2, and a spur gear 55 is attached to the other end. A spur gear 56 is engaged with the spur gear 55. The spur gear 56 is attached to one end of the rotation shaft 57, and the rotation shaft 57 is disposed in parallel with the rotation shaft 54. Further, a bevel gear 58 is attached to the other end of the rotating shaft 57, and the bevel gear 58 is meshed with the bevel gear 59. The bevel gear 59 is fixed to the rotating shaft 60 of the reel 14 that is a winding member.

The operation of this endoscope treatment system will be described.
When the treatment tool 2 is inserted through the endoscope 1, the motors 33 and 41 of the first drive means 25 and the second drive means 26 are rotated in conjunction with each other. At this time, the rotation of the bevel gear 51 attached to the other end of the rotation shaft 29 of the first drive means 25 is transmitted to the drive transmission unit 52. The drive transmission unit 52 transmits the rotation of the first drive means 25 to the rotation shaft 60 of the reel 14 by the bevel gears 53, 55, 56, 58 and the rotation shafts 54, 57. That is, when the first drive unit 25 rotates, the reel 14 rotates in the same direction, and the treatment instrument insertion portion 3 is fed out toward the second drive unit 26, so that the second drive unit 26 and the detour path 45 pass through. Then, it is guided to the first driving means 25. At this time, the number of teeth of each of the bevel gears 53, 55, 56, and 58 is set so that the drive transmission unit 52 rotates the reel 14 while reducing the number of rotations of the first drive unit 25. The treatment instrument insertion portion 3 is fed out from the reel 14 so as to match the feeding speed of the means 25 and 26.

When only the distal treatment section 6 is driven, only the second driving means 26 is driven. During this time, the first driving means 25 and the reel 14 are maintained in a stopped state.
When the treatment instrument 2 is removed, the driving means 25 and 26 are driven in the reverse direction. Along with this, the reel 14 rotates in the reverse direction, and the treatment instrument insertion portion 3 pulled back by the driving means 25 and 26 is wound around the reel 14.

  In this embodiment, since the detour path 45 is provided, the two drive means 25 and 26 can be arranged close to each other, and the same effect as in the first embodiment can be obtained. In addition, since the drive transmission unit 52 is provided and the reel 14 is rotated as the first drive unit 25 is driven, the treatment instrument insertion unit 3 can be smoothly wound and fed out smoothly and reliably. become.

  As shown in FIG. 14, when the hollow motor 46 is used for the second driving means 26 and the hollow motor 46 and the first motor 33 of the first driving means 25 are arranged coaxially, the first motor 33 Alternatively, a gear 61 may be attached to the rotary shaft 32, and a gear 63 may be connected to the gear 61 via a gear 62. The gear 63 is attached to the rotation shaft 60 of the reel 14. In this case, when the first driving means 25 is driven, the reel 14 rotates and the treatment instrument insertion portion 3 can be smoothly inserted and removed.

Next, a third embodiment of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same component as each said embodiment. Further, the description overlapping with each of the embodiments is omitted.
As shown in FIG. 15, the endoscope treatment system includes a first drive unit 25, a second drive unit 26, a bypass path 45 disposed between the drive units 25 and 26, and both drive units. And a driving means interlocking mechanism 65 that synchronizes or differentially rotates the rotations of the motors 25 and 26. As the drive means interlocking mechanism 65, the one described in JP-A-7-267094 can be used.

Specifically, the first driving means 25 has a first motor 33, and a roller 28 is attached to the rotating shaft 32 of the first motor 33. Further, the rotary shaft 32 penetrates through the hollow shaft 66, and a gear 61 is attached to the tip portion thereof. A gear 63 is meshed with the gear 61 so that the rotation of the first motor 33 can be transmitted to the reel 14. Further, the rotation of the roller 28 is transmitted to the roller 27 via the rotation transmission gears 31 and 30. The rotating shaft of the roller 27 is a hollow shaft 67.
Further, a gear 68 is attached to the first motor 33 side of the rotary shaft 32 of the first drive means 25. The gear 68 meshes with the gear 69 of the driving means interlocking mechanism 65. The drive means interlocking mechanism 65 has a gear 70 that meshes with a gear 69, and the gear 70 is attached to one end of a rotating shaft 71. A differential gear 72 is attached to the other end of the rotating shaft 71. The differential gear 72 is disposed opposite to the bevel gear 73 attached to the rotary shaft 71, the two bevel gears 74 and 75 meshing with the bevel gear 73, and the two bevel gears 74 and 75. And an external gear 77 is provided so as to enclose the two bevel gears 74 and 75. The external gear 77 is connected to the output shaft 79 of the second motor 41 of the second drive means 26 via a gear 78. Further, a rotating shaft 38 is attached to the bevel gear 76. The rotating shaft 38 passes through the outer gear 77 and the hollow shaft 67 of the roller 27 in a freely rotatable manner, and the roller 35 is attached to the tip thereof. Yes. The roller 35 is provided with a rotation transmission gear 39, and the rotation transmission gear 39 is meshed with the rotation transmission gear 40 of the driven roller 36.

The operation of this endoscope treatment system will be described.
When the treatment instrument insertion portion 3 is inserted and removed, only the first drive means 25 is driven. The first motor 33 rotates the pair of rollers 27 and 28 and the reel 14. At the same time, the bevel gear 73 of the differential gear 72 of the driving means interlocking mechanism 65 is reversely rotated. On the other hand, since the second motor 41 is not rotated, the external gear 77 is not rotated and the two bevel gears 74 and 75 are in an idle state. Therefore, no differential force is generated, and the bevel gear 76 rotates in reverse at the same rotational speed as the bevel gear 73. As a result, the pair of rollers 35 and 36 on the second drive means 26 side rotate in synchronization with the pair of rollers 27 and 28 on the first drive means 25 side and drive the treatment instrument insertion portion 3 in the same direction. To do.
Next, when the distal treatment section 6 is driven, the first motor 33 is stopped and an electromagnetic brake is applied to the rotating shaft 32. Thereafter, the second motor 41 is driven to rotate the external gear 77. As a result, the two bevel gears 74 and 75 rotate only the rotating shaft 38 and rotate the pair of rollers 35 and 36.

In this embodiment, only the required rollers 27, 28, 35, and 36 are driven by using one motor 33 and 41, respectively, when the treatment instrument insertion portion 3 is inserted and removed and when the distal treatment portion 6 is driven. Therefore, it is not necessary to precisely control the speed in order to synchronize a plurality of motors, and the control becomes easy. Further, since a clutch or the like is unnecessary, the mechanism can be made compact.
Furthermore, since the detour path 45 is provided, the distance between the driving means 25 and 26 can be shortened, and the endoscope 1 can be made compact.
And since the reel 14 was driven by the 1st drive means 25, insertion / extraction of the treatment tool insertion part 3 can be performed smoothly and reliably.

Next, a fourth embodiment of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same component as each said embodiment. Further, the description overlapping with each of the embodiments is omitted.
As shown in FIGS. 16 and 17, the endoscope treatment system includes an endoscope 1 and a treatment tool 81 configured to be detachable from the proximal end of the endoscope 1.
The endoscope 1 includes a first motor 33 of the first driving unit 25 and a second motor 41 of the second driving unit 26. The rotary shafts 82 and 83 of the motors 33 and 41 are rotatably supported by the endoscope 1, and each end portion thereof protrudes outside the endoscope 1.

The treatment instrument 81 includes a distal treatment section 6, a treatment instrument insertion section 3, and a storage section 12, and the treatment instrument insertion section 3 is wound around the reel 14. Openings 84 and 85 through which the rotary shafts 82 and 83 are inserted are formed at the tip of the cassette 13. Further, a mounting portion 86 projects from the outer peripheral portion of the front end portion of the cassette 13. The attachment portion 86 is engaged with the concave portion 87 of the endoscope 1.
In the cassette 13, a pair of rollers 27 and 28 of the first driving means 25 and a pair of rollers 35 and 36 of the second driving means 26 are rotatably arranged. The arrangement of the rollers 27, 28, 35, and 36 is the same as that shown in FIGS. The rotation shaft 32 of the roller 28 is connected to a transmission mechanism (not shown). This transmission mechanism is connected to the end of the rotary shaft 82 when the treatment instrument 81 is attached to the endoscope 1, and transmits the rotation of the rotary shaft 82 to the rotary shaft 32. Become.
Further, a pulley 88 is provided on the rotation shaft 32 of the roller 28. A belt 89 is wound around the pulley 88. The belt 89 is also wound around a pulley 90 attached to the rotation shaft of the reel 14. That is, when the roller 28 rotates, the rotation is transmitted to the reel 14 via the belt 89. In addition, the diameter of the pulley 90 is larger than the diameter of the pulley 90, and the rotation speed of the reel 14 is set so as to be a speed suitable for insertion / extraction of the treatment instrument insertion portion 3.

A transmission mechanism (not shown) is connected to the rotation shaft 38 of the roller 36 of the second driving means 26. This transmission mechanism is connected to the end of the rotary shaft 83 when the treatment instrument 81 is attached to the endoscope 1, and transmits the rotation of the rotary shaft 83 to the rotary shaft 38. Become.
A detour path 45 is disposed between the pair of rollers 28 and 27 of the first drive unit 25 and the pair of rollers 35 and 36 of the second drive unit 26. The detour path 45 is not an essential component, but the accommodating section 12 can be reduced in size by using the detour path 45.

The operation of this endoscope treatment system will be described.
First, the accommodating portion 12 of the treatment instrument 81 is attached to the endoscope 1. At this time, the rotating shafts 82 and 83 of the motors 33 and 41 and the rollers 28 and 36 are connected to each other so as to be interlocked.
When the treatment instrument 81 is inserted, the motors 33 and 41 are rotated in the same direction in synchronization. The rollers 28 and 36 rotate at the same speed via the rotary shafts 82 and 83 and the transmission mechanisms, and the rollers 27 and 35 that follow the rollers 28 and 35 also rotate. Further, the reel 14 interlocked with the belt 89 also rotates. As a result, the treatment instrument insertion portion 3 is unwound from the reel 14 and applied with a driving force between the pair of rollers 35 and 36, and then passes through the detour path 45 and again has a driving force between the pair of rollers 27 and 28. Is granted. And it guide | induces to the treatment tool penetration channel 20 (refer FIG. 1) of the endoscope 1 from the front-end | tip opening of the accommodating part 12, and it sends out toward the front-end | tip of the endoscope 1. FIG. Further, when the distal treatment section 6 is driven, only the second driving means 26 is driven.

In this embodiment, the same effect as the first embodiment can be obtained. In particular, by configuring the treatment tool 81 to be removable from the endoscope 1, it becomes easy to replace the treatment tool 81 appropriate for the treatment. Since the treatment instrument insertion portion 3 can be inserted in advance between the pair of rollers 27 and 28 and the pair of rollers 35 and 36, the treatment instrument is inserted between the rollers 27, 28, 35, and 36 when the treatment instrument 81 is replaced. There is no need to sandwich the insertion portion 3.
In addition, since the rollers 27, 28, 35, and 36 of the driving means 25 and 26 are disposed in the accommodating portion 12 on the treatment instrument 81 side, an optimum roller, for example, a treatment instrument, is selected according to the type of the treatment instrument 81. When the diameter of the insertion portion 3 is large, a roller having a large width can be used, so that the treatment instrument insertion portion 3 and the distal treatment portion 6 can be easily driven. Furthermore, since the reel 14 and the rollers 27, 28, 35, and 36 are integrated, it is not necessary to replace the roller alone. The endoscope 1 is reused after cleaning, whereas the treatment instrument 81 is often disposable. However, a relatively expensive motor is disposed on the endoscope 1 side, and an inexpensive roller is provided. Etc. are arranged on the treatment instrument 81 side, so that the cost can be reduced even when the treatment instrument 81 is disposable.

  Here, a cleaning cover 91 as shown in FIG. 18 may be provided. The cleaning cover 91 is attached to the proximal end of the endoscope 1 when the endoscope 1 is cleaned, and is provided with a recess 92 so as to cover the rotating shafts 82 and 83 exposed to the outside of the endoscope 1. Yes. When such a cleaning cover 91 is used, the rotary shafts 82 and 83 and the motors 33 and 34 can be waterproofed.

Next, a fifth embodiment of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same component as each said embodiment. Further, the description overlapping with each of the embodiments is omitted.
As shown in FIG. 19, in the endoscope treatment system, the operation unit 18 of the endoscope 1 is placed on a stand 95. The stand 95 is configured to be movable, and an endoscope driving device 96 that drives the insertion portion 19 to advance and retract and to rotate is provided on the upper portion of the stand 95. The endoscope drive device 96 includes a forward / backward drive motor for moving the insertion portion 19 of the endoscope 1 back and forth, a roller connected thereto, a rotation drive motor for rotating the insertion portion 19, and a rotation drive motor connected thereto. And a roller.

  A cord 97 extends from the endoscope driving device 96 and is connected to the control device 98. A universal cord 44 extending from the endoscope 1 is also connected to the control device 98. The control device 98 includes a light source, a video processor, and a processing unit, and an in-vivo image processed by the video processor is output to a monitor. The processing unit governs movement control and rotation control of the insertion portion 19, control of bending of the insertion portion 19, control of liquid feeding, and drive control of the driving means 25 and 26. A cord 99 extends from the processing unit, and a controller 100 as a manual operation means is provided at the tip of the cord 99. The controller 100 is operated by an endoscope operator, and can select each operation of the endoscope 1 performed via the control device 98. For example, the controller 100 is associated with each function. Buttons, switches, joysticks, etc. are arranged.

In this endoscope treatment system, the insertion and removal of the treatment instrument 81 and the driving of the distal treatment section 6 are performed by operating the controller 100. The operation of each driving means 25, 26 is the same as that in the fourth embodiment.
In this embodiment, the same effect as the fourth embodiment can be obtained. Furthermore, since the controller 100 can automatically perform the operation of the treatment tool, which has been difficult with the conventional stationary endoscope and the type of endoscope operated by the controller, the operability is improved and the procedure is improved. Is facilitated.
The endoscope 1 and the treatment tool 81 can obtain the same actions and effects even if they are the endoscope and the treatment tool of the first to third embodiments.

Next, a sixth embodiment of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same component as each said embodiment. Further, the description overlapping with each of the embodiments is omitted.
As shown in FIG. 20, in the endoscope treatment system, the treatment tool 101 can be inserted so as to freely advance and retreat. The treatment instrument 101 has a treatment instrument insertion portion 104 in which an operation wire 103 is inserted in a flexible sheath 102 so as to be able to advance and retreat. After the proximal end portion of the operation wire 103 protrudes from the proximal end portion of the sheath 102, the operation tube 10 is attached. The operation tube 10 is connected to the proximal end portion of the sheath 102 via the elastic member 11. The distal end portion of the operation wire 103 is connected to the distal treatment portion 105. The distal treatment section 105 has a pair of gripping pieces 106 arranged to face each other. The gripping piece 106 has elasticity, and in a natural state, the gripping piece 106 is formed so that the distal end portions 106a are separated and expanded. Furthermore, the tip end portion 106a of each gripping piece 106 is a claw portion bent in a direction approaching each other.

  The endoscope 1 is provided with first drive means 25 and second drive means 26. The first driving means 25 is disposed on the distal end side with respect to the second driving means 26. A detour path 45 is disposed between the pair of rollers 27 and 28 of the first drive unit 25 and the pair of rollers 35 and 36 of the second drive unit 26. The bypass path 45 is not an essential component, but the endoscope 1 can be downsized by using the bypass path 45.

The operation of this endoscope treatment system will be described.
First, when the treatment instrument 101 is inserted, the rollers 27, 28, 35, and 36 of the driving means 25 and 26 are driven in synchronization. In order to drive the distal treatment section 105, the rollers 27 and 28 of the first drive means 25 are driven and the sheath 102 is retracted while the rollers 35 and 36 of the second drive means 26 are stopped. When the sheath 102 is retracted, the pair of grip pieces 106 accommodated in the sheath 102 are relatively exposed to the outside, and as a result, the pair of grip pieces 106 are expanded. In this state, when the positions of the pair of gripping pieces 106 are adjusted so as to sandwich the living tissue to be gripped, the first driving means 25 is driven to advance the sheath 102. When the sheath 102 moves forward, the pair of gripping pieces 106 are relatively drawn into the sheath 102. As a result, the pair of gripping pieces 106 are closed to grip the living tissue.

  In this embodiment, when the treatment instrument 101 is a retractable grasping forceps, the distal treatment section 105 is driven by moving only the sheath 102 forward and backward. When the distal treatment section is advanced and retracted as in the prior art, the position of the distal treatment section is moved. Therefore, the position of the distal treatment section must be adjusted each time. In this embodiment, the distal treatment is performed. Since the position of the part 105 does not move, position adjustment becomes easy. Therefore, the procedure can be facilitated.

Next, a seventh embodiment of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same component as each said embodiment. Further, the description overlapping with each of the embodiments is omitted.
As shown in FIGS. 21 and 22, in the endoscope treatment system, the first drive means 25 and the second drive means 26 are arranged on a substantially straight line in the insertion portion 19 of the endoscope 1. Furthermore, the accommodating part 12 is attached to the side surface of the operation part. The accommodating portion 12 has a reel 14 rotatably supported therein. A path 110 through which the treatment instrument insertion portion 3 passes is provided from the second driving means 26 to the reel 14. The path 110 is formed by a space from the roller 35 disposed on the reel 14 side to the reel 14, and the treatment instrument insertion portion 3 is drawn around the roller 36 by the path 36. ing.
The treatment instrument insertion portion 3 is driven while being changed in direction by the second drive means 26 after being fed out of the reel 14, and is also driven by the first drive means 25. Note that the distance between the first driving means 25 and the second driving means 26 is substantially equal to the protruding amount by which the treatment instrument 2 protrudes from the distal end of the endoscope 1. When the treatment is performed by driving the distal treatment section 6, only the second drive means 26 is driven.

  According to this embodiment, the endoscope is compared with the case where the length of the treatment instrument insertion portion 3 from the first driving means 25 through the second driving means 26 to the reel 14 is drawn linearly. 1 can be reduced in size. In addition, by driving only the second driving means 26, it becomes possible to automatically perform treatment on the living body electrically.

Here, as shown in FIG. 23 and FIG. 24, the first drive means 25 and the second drive means 26 are configured such that the rotation shafts 29, 32, 35, and 38 are substantially orthogonal to the length direction of the endoscope 1. A detour path 115 that is arranged in parallel along the direction and curved in a substantially semicircular shape may be provided. In this case, the treatment instrument insertion portion 3 drawn out from the reel 14 is guided by the detour path 115 while being driven by the pair of rollers 36 and 36 of the second drive means 26, and is bent in the detour path 115. Thus, the moving direction is bent about 180 degrees. The treatment instrument insertion portion 3 sent out from the detour path 115 is guided between the rollers 27 and 28 of the first drive means 25 and further sent out toward the distal end of the endoscope 1 here.
In such an endoscope treatment system, since the path between the drive means 25 and 26 is curved, the linear distance between the first drive means 25 and the second drive means 26 can be reduced, The size of the endoscope 1 can be reduced.

Next, an eighth embodiment of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same component as each said embodiment. Further, the description overlapping with each of the embodiments is omitted.
As shown in FIGS. 25 and 26, the treatment instrument insertion portion 121 of the treatment instrument 120 has a sheath 4 made of a closely wound coil, and an operation wire 5 for driving the distal treatment section 6 is advanced and retracted in the sheath 4. It is inserted freely. An elastic member 122 made of a continuous tube having a hollow ring shape is attached to the proximal end portion of the sheath 4. The elastic member 122 connects the sheath 4 and the operation tube 10 so as to be close to and away from each other.

  When inserting / removing the treatment instrument 120, the sheath 4 and the operation tube 10 of the treatment instrument insertion portion 121 are sent out synchronously, so that each ring-shaped cross section of the elastic member 122 maintains a substantially circular shape as shown in FIG. . Then, when the treatment is performed by driving the distal treatment section 6, the operation tube 10 is advanced by the second driving means 26 while the sheath 4 is fixed by the first driving means 25. At this time, each ring-shaped cross section of the elastic member 122 is crushed, the operation tube 10 approaches the sheath 4, and as a result, the operation wire 5 moves forward, and the pair of gripping pieces 8 of the distal treatment section 6 are opened. When the second driving means 26 is driven in the reverse direction, the operation tube 10 is separated from the sheath 4 and the elastic member 122 is restored. At this time, the operation wire 5 is retracted and the pair of gripping pieces 8 are closed.

According to this embodiment, since the sheath 4 and the operation tube 10 are connected by the elastic member 122, the distal treatment section 6 can be automatically driven. Further, since the operation wire 5 is not exposed, it is possible to prevent interference with other members and effectively prevent sagging, and the operation wire 5 can be smoothly advanced and retracted.
As shown in FIG. 27, connecting members 123 and 124 are provided, the sheath 4 and the elastic member 122 are fixed by the connecting member 123, and the elastic member 122 and the operation tube 10 are fixed by the connecting member 124. good. The connecting member 123 is formed of an annular member through which the operation wire 5 is inserted so as to freely advance and retract. The operation wire 5 is fixed to the connecting member 124 at the tip.
With this configuration, the sheath 4, the elastic member 122, and the operation tube 10 can be fixed easily and reliably.

  Here, the elastic member 122 may be an O-ring. Further, a bellows-like elastic member 130 as shown in FIGS. 28 and 29 may be used. This elastic member 130 connects the proximal end portion of the sheath 4 constituting the treatment instrument insertion portion 132 of the endoscope 131 and the distal end portion of the operation tube 10 so as to be close to and away from each other. It is connected via a member 123 and connected to the operation tube 10 via a connecting member 124. The elastic member 122 is shaped so as to bias the sheath 4 and the operation tube 10 in a natural state, that is, to bias the distal treatment section 6 in a natural state. The elastic member 130 has the same effect as the elastic member 122.

The present invention is not limited to the above embodiments and can be widely applied.
For example, FIGS. 30 and 31 show other forms of rollers for the driving means 25 and 26. The roller 140 shown in FIG. 30 is disposed so as to come into contact with the flexible treatment instrument insertion portion 141 from three directions. At least one roller 140 is driven to rotate by motors 33 and 41. The roller shown in FIG. 31 contacts the treatment instrument insertion portion 141 from three directions, and the contact surface 141a has a concave shape. These rollers 140 and 141 apply force to the treatment instrument insertion portion 141 from substantially the entire circumferential direction, thereby preventing concentration of force and preventing the treatment instrument insertion portion 141 from being crushed. In particular, a remarkable effect is exhibited when the treatment instrument insertion portion 141 is made of a tube.

It is a figure which shows the structure of the endoscope treatment system in this embodiment. It is a figure which shows the structure of a treatment tool. It is sectional drawing which shows the structure of the accommodating part of a treatment tool. It is a perspective view of the reel of an accommodating part. It is a figure which shows arrangement | positioning of a 1st drive means, a 2nd drive means, and a detour route. It is sectional drawing along the AA line of FIG. FIG. It is a figure which shows arrangement | positioning of a 1st drive means, a 2nd drive means, and a detour route. It is a figure which shows arrangement | positioning of a 1st drive means, a 2nd drive means, and a detour route. It is a figure which shows the structure of an endoscope treatment system. It is a figure which shows arrangement | positioning of a 1st drive means, a 2nd drive means, and a detour path | route. It is a figure which shows the arrangement | positioning of a 1st drive means, a 2nd drive means, a detour path | route, and a reel. It is C arrow line view of FIG. It is a figure which shows the arrangement | positioning of a 1st drive means, a 2nd drive means, a detour path | route, and a reel. It is a figure which shows the arrangement | positioning of a 1st drive means, a 2nd drive means, a detour path | route, and a reel. It is a figure which shows the structure of an endoscope system, Comprising: It is a figure which shows the state which removed the treatment tool. It is the figure which expanded a part of FIG. It is a figure which shows the state which attached the cover for washing | cleaning to the endoscope. It is a figure which shows the structure of an endoscope treatment system. It is sectional drawing which shows the structure of an endoscope treatment system. It is a figure which shows the structure of an endoscope treatment system. It is a figure which shows the arrangement | positioning of a 1st drive means, a 2nd drive means, a detour path | route, and a reel. It is a figure which shows the structure of an endoscope treatment system. It is a figure which shows the arrangement | positioning of a 1st drive means, a 2nd drive means, a detour path | route, and a reel. It is a figure which shows the structure of a treatment tool. It is sectional drawing which shows an elastic member. It is sectional drawing which shows an elastic member. It is a figure which shows the structure of a treatment tool. It is sectional drawing which shows an elastic member. It is a figure which shows arrangement | positioning of a roller. It is a figure which shows arrangement | positioning of a roller.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Endoscope 2,81 Treatment tool 3 Treatment tool insertion part 4 Sheath 5 Operation wire 6 Tip treatment part 12 Storage part 14 Reel 20 Treatment tool insertion channel 25 First drive means 26 Second drive means 45 Detour path 49 Electromagnetic clutch ( Drive mechanism interlocking mechanism)
52 Drive transmission part (reel interlocking mechanism)
65 Driving means interlocking mechanism 72 Differential gear (differential mechanism)
100 controller (manual operation means)
101 Treatment tool (gripping forceps)

Claims (12)

A treatment portion for performing treatment on a living body is provided at the distal end of a treatment instrument insertion portion having a flexible sheath, and an operation wire connected to a drive portion of the treatment portion is inserted into the sheath so as to be able to advance and retreat. A treatment instrument insertion channel for inserting the endoscope treatment instrument;
First driving means for driving the sheath along the treatment instrument insertion channel;
Second driving means capable of driving the sheath and the operation wire along the treatment instrument insertion channel;
A detour path that increases the path length of the endoscope treatment tool from the first drive means to the second drive means;
An endoscope comprising:   The endoscope according to claim 1, wherein the detour path includes a curved tubular member through which the sheath and the operation wire can be inserted.   The endoscope according to claim 1 or 2, wherein the first drive unit and the second drive unit are arranged in order along a length direction of the treatment instrument insertion channel.   The inner side of Claim 1 or Claim 2 which has arrange | positioned the said 1st drive means and the said 2nd drive means in the direction substantially orthogonal to the length direction of the said treatment tool penetration channel. Endoscope.   The endoscope according to any one of claims 1 to 4, further comprising a driving means interlocking mechanism that matches a feeding speed of the second driving means with a feeding speed of the first driving means. .   The endoscope according to claim 5, further comprising a differential mechanism that makes the second driving unit differential with respect to the first driving unit. The endoscope according to any one of claims 1 to 6,
The endoscope treatment tool;
An accommodating portion for accommodating the endoscope treatment instrument;
The endoscope treatment system is characterized in that the first drive means, the second drive means, and the accommodating portion are arranged in order along the length direction of the treatment instrument insertion channel.   The accommodating portion is rotatably provided with a reel for winding the endoscope treatment tool, and the reel feeding speed is set to a feeding speed of the first driving means between the reel and the first driving means. The endoscope treatment system according to claim 7, further comprising a reel interlocking mechanism for matching. The endoscope according to claim 1 or claim 2,
The endoscope treatment tool;
An accommodating portion capable of accommodating the endoscope treatment instrument and detachably provided on the endoscope;
An endoscope treatment system, wherein the housing portion is provided with the first drive means and the second drive means. The endoscope according to any one of claims 1 to 6,
Retractable gripping forceps that are the endoscope treatment tool;
An endoscopic treatment system comprising: opening and closing the grasping forceps by driving the sheath with the first driving means.   The endoscope treatment system according to any one of claims 1 to 10, further comprising a manual operation unit that remotely operates the first drive unit and the second drive unit. The endoscope according to any one of claims 1 to 6,
The endoscopic treatment tool in which the operation wire protrudes from a proximal end portion of the sheath, and an operation tube that is pressed against the second drive unit is attached to the protruding portion.
An endoscopic treatment system comprising:

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