JP2005168808A - Endoscope treatment system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an endoscope treatment system for facilitating a work to insert/pull-out a treatment unit and shortening and facilitating a procedure. <P>SOLUTION: The system includes: a tip end part with forcepts (treatment unit) 3 having a treatment part 2 for performing a treatment to a living body; a channel 4 for putting the tip end part with the forcepts 3; a connection part 5 to be movable in a direction in parallel with the channel 4 and to support the tip end part 3 with the forcepts; and a driving means 6 for driving the connection part 5 to move in the direction in parallel with the channel 4. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an endoscope treatment system capable of automatically inserting and removing a treatment tool.

  In general, when performing a treatment of a required part in the body or an examination of a living tissue by an operation from outside the body using an endoscope, for example, a plurality of treatment tools such as a needle knife and a grasping forceps are continuously used. Sometimes. In such a case, conventionally, the selected treatment tool is inserted into the body through the forceps channel provided in the insertion portion of the endoscope, and after performing a predetermined treatment, the treatment tool is pulled out of the body, and the treatment tool is again mounted. Operations such as insertion into a forceps channel were performed.

When inserting such a treatment tool into the forceps channel, it is necessary to carefully insert a long treatment tool into the narrow forceps channel from the hole provided in the endoscope, which is troublesome and requires a high degree of attention. Cost.
Therefore, an endoscope provided with an insertion / extraction device that automatically performs an insertion / extraction operation into a forceps channel has been proposed (see, for example, Patent Document 1). In addition, the apparatus includes a plurality of end effectors and a multi-function treatment instrument that is used by transporting an end effector selected from these to the distal end of the endoscope insertion portion and connecting to the distal end of the arm provided inside the insertion portion. An endoscope has been proposed (for example, see Patent Document 2).
JP 57-117823 A (FIG. 1) JP-A-6-54801 (FIG. 3)

However, for example, in the technique described in Patent Document 1, since the treatment tool uses a conventional treatment tool as it is, it is necessary to assist the operation while supporting the treatment tool by hand when the treatment tool is inserted into the endoscope. However, it has not been possible to reduce the time and ease of sufficient procedures.
Further, in the technique described in Patent Document 2, the tip of the arm portion extending outward from the tip of the endoscope insertion portion is inverted 180 degrees, and the end effector is transported there and attached / removed by an electromagnet. If a sufficient area for the work cannot be secured at the distal end of the endoscope insertion portion, the replacement work may not be easy.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an endoscope treatment system that facilitates the insertion / extraction operation of a treatment instrument and that can shorten and facilitate a procedure. .

The present invention employs the following means in order to solve the above problems.
An endoscope treatment system according to the present invention includes a treatment unit having a treatment part, a channel through which the treatment unit can be inserted, a connection part that is movable in a direction parallel to the channel, and supports the treatment unit, Drive means for moving and driving the connecting portion in a direction parallel to the channel is provided.
In this endoscope treatment system, by driving the driving means, the connecting portion can be moved in the direction parallel to the channel, and the treatment unit supported by the connecting portion can be moved in the direction parallel to the channel.

The endoscope treatment system according to the present invention is the endoscope treatment system, wherein the treatment unit is supported by the treatment unit main body, and the advancing / retreating operation of the driving unit supported by the treatment unit main body. A treatment section drive mechanism that transmits the signal to the treatment section and drives the treatment section, wherein the drive section includes a first drive section and a second drive section, and the connection section includes the first drive section And a first connection part that supports the treatment unit main body and a second connection part that is supported by the second drive means and supports the treatment part drive mechanism. To do.
In this endoscope treatment system, the treatment unit main body is attached to and supported by the first connection portion, and the treatment portion drive mechanism is attached to and supported by the second connection portion, and then the first drive means and the second drive means. , The treatment unit can be moved in a direction parallel to the channel by moving the first connection portion and the second connection portion. Further, by stopping the first driving means and driving the second driving means, the second connecting portion is moved relative to the first connecting portion, so that the treatment portion driving mechanism is parallel to the channel. It can move and drive a treatment part.

  The endoscope treatment system according to the present invention is the endoscope treatment system according to the first aspect, wherein the first drive means is pivotally supported on the distal end side of the insertion portion of the endoscope. A pulley, a second pulley pivotally supported on the proximal end side of the insertion portion, and the first connection portion wound around the first pulley and the second pulley along the channel A third moving member that supports the first pulley, and wherein the second driving means is pivotally supported on the first pulley side of the insertion portion so as to be pivotable, and the insertion portion has the first pulley. A fourth pulley pivotally supported on the second pulley side, and a second pulley wound around the third pulley and the fourth pulley along the channel to support the second connecting member The moving member is provided.

Since this endoscope treatment system has the above-described configuration, the treatment unit main body is attached to and supported by the first connection portion, and the treatment portion drive mechanism is attached to and supported by the second connection portion. And the third pulley and the second pulley are rotated in the same direction and at the same speed, and the third pulley and the fourth pulley are rotated in the same direction and at the same speed as the first pulley and the second pulley, The first moving member and the second moving member wound around these can be simultaneously moved in the same direction and at the same speed in the direction parallel to the channel. Therefore, the treatment unit can be advanced and retracted into the channel.
Moreover, the 1st connection part and the 2nd connection part can be made to approach or space apart by making the moving speed of a 2nd moving member into a speed different from the moving speed of a 1st moving member. For this reason, the treatment section drive mechanism can be moved back and forth relative to the treatment unit main body, and the treatment section can be operated to perform a necessary treatment.
In addition, when performing a plurality of treatments, a plurality of treatment units are prepared and replaced one after another, so that it is possible to cope with a plurality of treatments. Can be reduced.

Moreover, the endoscope treatment system according to the present invention is the endoscope treatment system, wherein a non-slip uneven portion is provided on the surfaces of the first moving member and the second moving member. Is preferred.
Since this endoscope treatment system has the above-described configuration, the first pulley, the second pulley, and the transporting endless member, and the third pulley, the fourth pulley, and the second movement are provided. The members can be brought into close contact with each other, and the error of the protruding position with respect to the channel of the treatment unit can be suppressed and conveyed to an accurate position. Moreover, since each pulley and the anti-slip uneven portion are engaged, torque transmission from each pulley can be improved.

The endoscope treatment system according to the present invention is the endoscope treatment system, wherein the first drive means is pivotally supported on the distal end side of the insertion portion of the endoscope. And the second pulley pivotally supported on the base end side of the insertion portion, the first connection portion and the first pulley and the first pulley along the channel. And a first moving member wound around two pulleys, wherein the second connecting means and the second connecting portion are disposed in the first connecting portion.
This endoscope treatment system can simplify the configuration of the treatment section drive mechanism and the interior of the insertion section.

The endoscope treatment system according to the present invention is the endoscope treatment system, wherein a distal end is connected to the treatment unit main body and the treatment portion drive mechanism, and a proximal end is connected to the first connection portion and the treatment portion. The second connection portion is provided with an extension portion that can be attached to and detached from the second connection portion.
Since this endoscopic treatment system has the above-described configuration, the treatment portion can be projected from the channel tip to a desired position by setting the extension portion to a predetermined length and mounting the operation portion. Can be improved.

  Further, the endoscope treatment system according to the present invention is the endoscope treatment system, wherein the first connection portion is connected to an outer peripheral surface of the treatment unit main body, so that the treatment tool side concave portion or the treatment tool side convex portion is provided. A first convex portion or a first concave portion that is engageable with one of the treatment instrument side concave portion or the treatment instrument side convex portion on the outer peripheral surface of the first moving member, The second connection portion is connected to the proximal end side of the treatment portion drive mechanism and is provided as one of the movable side concave portion or the movable side convex portion toward the second moving member, and the second movement The outer peripheral surface of the member is provided with a second convex portion or a second concave portion that can be engaged with one of the movable side concave portion or the movable side convex portion.

  Since this endoscopic treatment system has the above-described configuration, the first treatment by engaging the treatment instrument-side concave portion and the first convex portion, or the treatment instrument-side convex portion and the first concave portion, is performed. The treatment unit main body can be easily supported at an arbitrary position on the moving member, and the treatment unit main body can be conveyed by the movement of the first moving member. Further, the movable side concave portion and the second convex portion, or the movable side convex portion and the second concave portion can be engaged, and the treatment portion drive mechanism and the second moving member of the treatment unit are easily supported. Then, the treatment portion drive mechanism can be driven by operating the treatment portion by moving the second moving member back and forth.

  According to the endoscope of the present invention, it is possible to facilitate the replacement of the treatment instrument with a simple configuration, and to improve the time and ease of the procedure.

A first embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, an endoscope treatment system 1 according to this embodiment includes a forceps tip (treatment unit) 3 having a treatment portion 2, a channel 4 through which the forceps tip 3 can be inserted, a channel 4, A connecting portion 5 that is movable in a parallel direction and supports the forceps tip 3 and a driving means 6 that moves and drives the connecting portion 5 in a direction parallel to the channel 4 are provided.

As shown in FIG. 2, the forceps tip 3 is driven by transmitting the forward / backward movement of the driving means 6 supported by the tip cover 7 and the tip cover 7 that supports the treatment portion 2 to the treatment portion 2. And a treatment section drive mechanism 8 for performing the above-described operation.
The treatment section 2 is composed of a pair of forceps pieces 10 and 11 and is supported on the distal end side of the distal end cover 7.
The treatment portion drive mechanism 8 is configured by a link mechanism, and the distal end is connected to the proximal end side of the pair of forceps pieces 10 and 11.

The channel 4 is formed in the insertion portion 13 of the endoscope 12, and an endoscope operation portion 15 for bending the distal end of the insertion portion 13 with an angle knob 15 </ b> A is connected to the proximal end of the insertion portion 13.
The insertion portion 13 has flexibility and is inserted into the body cavity from the distal end side. An opening 16 communicating with the side surface of the channel 4 is provided on the proximal end side of the insertion portion 13 so that the forceps distal end portion 3 can be inserted.

The connecting portion 5 includes a first connecting portion 17 that supports the distal end cover 7 and a second connecting portion 18 that supports the treatment portion driving mechanism 8, and the driving means 6 supports the first connecting portion 17. The first drive means 20 for moving and driving the treatment section drive mechanism 8 and the second drive means 21 for supporting and moving the treatment section drive mechanism 8 are provided.
The first driving means 20 is pivotally supported on the first pulley 22 pivotally supported on the distal end side of the insertion portion 13 of the endoscope 12 and pivotally supported on the proximal end side of the insertion portion 13. A second pulley 23, a linear first endless wire (first moving member) 25 wound around the first pulley 22 and the second pulley 23 along the channel 4, and a first And a first drive unit 26 composed of a motor or the like that rotationally drives the pulley 22 and the second pulley 23, and the first connection unit 17 is fixed to and supported by the first endless wire 25. .

The first endless wire 25 is arranged through the channel 4 and the first wire passage hole 28 formed in the insertion portion 13 along the channel 4, and the first connection portion 17 is It moves in the channel 4 between the first pulley 22 and the second pulley 23.
The first connecting portion 17 is fixed to the first endless wire 25 and is erected in the radially outer channel 4 and is connected to the tip of the erected portion 17A. And a distal end cover mounting portion 17B formed to extend along one endless wire 25 and to which the distal end cover 7 is detachable.
The 1st drive part 26 is arranged along with the side of the 2nd pulley 23, is connected to the 2nd pulley 23, and rotationally drives this.

  The second drive means 21 is rotatable in parallel with the third pulley 30 pivotally supported along with the first pulley 22 of the insertion portion 13 and the second pulley 23 of the insertion portion 13. A fourth pulley 31 pivotally supported by the second pulley 31; and a linear second endless wire (second moving member) 32 wound around the third pulley 30 and the fourth pulley 31 along the channel 4; , And a second drive unit 33 composed of a motor or the like that rotationally drives the fourth pulley 31, and the second connection unit 18 is fixed to and supported by the second endless wire 32.

The second endless wire 32 is disposed through the channel 4 and the second wire passage hole 36 formed in the insertion portion 13 along the channel 4, and the second connection portion 18 is , Move in the channel 4 between the third pulley 30 and the fourth pulley 31.
The second connecting portion 18 is fixed to the second endless wire 32 and is erected in the radially outer channel 4 and a treatment in which the treatment portion drive mechanism 8 is detachable. Part drive mechanism attaching part 18B. The treatment portion drive mechanism attachment portion 18B is disposed through the inside of the distal end cover mounting portion 17B in the direction in which the second endless wire 32 extends.
The second drive unit 33 is arranged side by side on the side surface of the fourth pulley 31 and is connected to the fourth pulley 31 to rotationally drive it.

Further, an advance / retreat button 34 for instructing driving of the first drive means 20 and the second drive means 21 in order to advance / retreat the forceps tip 3 along the channel 4, and a first in order to operate the treatment section 2. An opening / closing button 35 for instructing driving of the driving means 20 and the second driving means 21 is arranged side by side on the suction button 15B, the air / water supply button 15C, etc. disposed on the outer side surface of the endoscope operation unit 15. Has been.
The advance / retreat button 34 moves, for example, the first endless wire 25 in the direction in which the forceps tip 3 is conveyed to the tip side of the channel 4 only while being pressed, and the second connection portion 18 is moved to the tip side of the channel 4. A forward button 34A that moves the second endless wire 32 in the same direction as the first endless wire 25 at the same speed in the conveying direction, and a direction in which the forceps distal end portion 3 is conveyed to the proximal end side of the channel 4 only while being pressed. And a backward button 34B for driving each.

For example, the open / close button 35 stops the first driving means only while being pressed, and moves the second endless wire 32 in a direction in which the second connecting portion 18 is conveyed to the distal end side of the channel 4. When the open button 35A for opening the pieces 10 and 11 is slid to the proximal end side of the channel 4 only while being pressed, the first driving means is stopped and the second connecting portion 18 is conveyed to the proximal end side of the channel 4 A closing button 35B for closing the pair of forceps pieces 10 and 11 by moving the second endless wire 32 in the direction is provided.
The advance / retreat button 34, the open / close button 35, and the first drive unit 26 and the second drive unit 33 are electrically connected to a control unit (not shown) that is disposed on the endoscope 12 and controls them.

Next, a method for using the endoscope treatment system 1 of the present embodiment having the above configuration will be described below.
First, the insertion part 13 of the endoscope 12 is inserted into the body cavity to confirm the affected part.
Then, the forward button 34 </ b> A is pressed to issue a drive command from the control unit to the first drive unit 26 to rotate the second pulley 23, and accordingly, the first endless wire 25 is moved along the channel 4. At the same time, the control unit issues a drive command to the second drive unit 33 to rotate the fourth pulley 31 in the same direction as the second pulley 23 at the same speed, and accordingly the second endless wire 32 is channeled. 4 is moved. As a result, the first connecting portion 17 and the second connecting portion 18 are arranged at the position of the opening 16.
After releasing the advance button 34A and stopping the first connection portion 17 and the second connection portion 18, the distal end cover 7 of the forceps distal end portion 3 is engaged with the distal end cover mounting portion 17B at the opening portion 16 and treatment is performed. The base end of the part drive mechanism 8 is engaged with the treatment part drive mechanism attachment part 18B, and the advance button 34A is pushed again. Then, the forceps tip 3 is conveyed to the vicinity of the first pulley 22 via the first connection portion 17 and the second connection portion 18.

After the forceps tip 3 is conveyed, the advance button 34A is released to stop the forceps tip 3 at a predetermined position.
When opening the pair of forceps pieces 10, 11, the open button 35A is pushed. At this time, only the second drive unit 33 is driven, and the second endless wire 32 advances the second connection unit 18 further toward the tip of the channel 4 with respect to the first connection unit 17. This driving force is transmitted to the treatment portion driving mechanism 8 and converted into an opening / closing force of the pair of forceps pieces 10 and 11, and the pair of forceps pieces 10 and 11 are opened.
After the affected part is caught in the forceps pieces 10, 11, the open button 35A is released and the close button 35B is pressed instead. At this time, the second driving unit 33 rotates the fourth pulley 31 in the reverse direction, and rotates the second endless wire 32 in the direction in which the second connecting unit 18 moves to the proximal end side of the channel 4. Then, the pair of forceps pieces 10 and 11 are closed.

After closing the pair of forceps pieces 10 and 11, the close button 35B is released and the retreat button 34B is pushed to drive the first drive unit 26 to rotate the second pulley 23 in the direction opposite to the forward direction. The first endless wire 25 is rotated in the direction in which the one connecting portion 17 is moved to the proximal end side of the channel 4. At the same time, the second drive unit 33 is also driven so that the second endless wire 25 moves in the same speed and in the same direction as the first endless wire 25. 4 is transported to the base end side, and the removal operation is performed.
In this way, the predetermined treatment is completed by conveying the forceps tip 3 to the position of the opening 16.

According to this endoscope treatment system 1, the first endless wire 25 and the second endless wire 32 are driven at the same speed by simultaneously driving the first drive unit 26 and the second drive unit 33, and By moving in the same direction, the forceps tip 3 can be advanced and retracted in a direction parallel to the channel 4. Further, by operating only the second drive unit 33 and moving the second endless wire 32 back and forth relative to the first endless wire 25, the treatment unit drive mechanism 8 is operated and the treatment unit 2 is operated. The necessary treatment can be performed.
In addition, when performing a plurality of treatments, a plurality of forceps tip 3 and other treatment units are prepared and replaced one after another, so that a plurality of treatments can be handled. The troublesomeness of replacing or replacing can be reduced.

Next, a second embodiment will be described with reference to FIG.
In addition, the same code | symbol is attached | subjected to the component similar to 1st Embodiment mentioned above, and description is abbreviate | omitted.
The difference between the second embodiment and the first embodiment is that in the endoscope treatment system 37 according to the second embodiment, the forceps distal end portion 38 has a distal end at the distal end cover 7 and the treatment portion drive mechanism 8. The proximal end is provided with an operation tube portion (extension portion) 40 that is detachably attached to the distal end cover mounting portion 17B and the treatment portion drive mechanism attachment portion 18B.
The operation tube portion 40 is configured to have flexibility, and includes an operation wire 41 that connects the treatment portion drive mechanism 8 and the second connection portion 18 therein.
The proximal end of the operation wire 41 is detachably attached to the treatment portion drive mechanism attachment portion 18B of the second connection portion 18.

  This endoscope treatment system 37 also has the same operation and effect as the first embodiment, but by setting the operation tube portion 40 to a predetermined length or attaching / detaching a tube having a predetermined length. The forceps tip 38 can be projected from the tip of the channel 4 to a desired position, and the operability can be improved.

Next, a third embodiment will be described with reference to FIG.
In addition, the same code | symbol is attached | subjected to the component similar to embodiment mentioned above, and description is abbreviate | omitted.
The difference between the third embodiment and the second embodiment is that the first endless wire 25 and the second endless wire 32 of the endoscope treatment system 37 according to the second embodiment are normal linear wires. On the other hand, when the uneven | corrugated | grooving part 46 for antiskid is provided in the surface of the 1st endless wire 43 of the endoscope treatment system 42 which concerns on 3rd Embodiment, and the 2nd endless wire which is not shown in figure. This is the point.

That is, the first endless wire 43 wound around the first pulley 22 and the second pulley 23 includes a linear wire main body 43A and a spiral wire wound around the outer periphery of the wire main body 43A at a predetermined interval. 43B. The spiral strip 43B and the space between the winding pitches of the spiral strip 43B constitute an anti-slip uneven portion 46.
The second endless wire (not shown) wound around the third pulley 30 and the fourth pulley 31 also has the same configuration as the first endless wire 25.
Although this endoscope treatment system 42 can also obtain the same operation and effect as the second embodiment, the first pulley 22 and the second pulley 23 and the first endless wire 43 or The third pulley 30 and the fourth pulley 31 and the second endless wire can be brought into close contact with each other, and the error of the protruding and retracting position of the forceps tip 38 with respect to the channel 4 can be suppressed and conveyed to an accurate position. In addition, the opening and closing of the pair of forceps pieces 10 and 11 can be adjusted more accurately.

Next, a fourth embodiment will be described with reference to FIGS.
In addition, the same code | symbol is attached | subjected to the component similar to embodiment mentioned above, and description is abbreviate | omitted.
The difference between the fourth embodiment and the first embodiment is that the second drive means 21 of the endoscope treatment system 1 according to the first embodiment has the same configuration as the first drive means 20. Although provided, in the endoscope treatment system 47 according to the present embodiment, the solenoid (second driving means) 48 is provided in the distal end cover mounting portion 17B.

The second connection portion 50 is formed in a rod shape and is disposed so as to protrude from the side surface of the first connection portion 17 toward the tip end of the channel 4, and is moved in a direction parallel to the channel 4 by the solenoid 48.
A concave portion 51 that can be engaged with the treatment portion drive mechanism 8 is disposed at the distal end of the second connection portion 50.
A conductive wire 52 connected to a power supply unit (not shown) is connected to the proximal end side of the solenoid 48, and the conductive wire 52 is connected to an open / close button 53.
The open / close button 53 is disposed on the outer surface of the endoscope operation unit 15, and is configured to open the pair of forceps pieces 10 and 11 when pressed and close them when released.

Next, an operation method of the endoscope treatment system 47 according to this embodiment will be described below.
After the insertion portion 13 is inserted into the body cavity, the second pulley 23 is rotationally driven so that the first connection portion 17 and the second connection portion 50 are disposed at the position of the opening portion 16 by pushing the advance button 34A. 1 endless wire 25 is moved.
After the advance button 34A is released at the opening 16 to stop the first connecting portion 17 and the second connecting portion 50, the tip cover 7 of the forceps tip 3 is engaged with the first connecting portion 17. Then, the proximal end of the treatment portion drive mechanism 8 is engaged with the recess 51 of the second connection portion 50, and the advance button 34A is pushed. At this time, the first endless wire 25 rotates as described above, and the first connecting portion 17 moves along the channel 4.
Then, the forceps tip 3 is conveyed to the tip of the channel 4 via the first connection portion 17.

After transporting the forceps tip 3 to a predetermined position, the advance button 34A is released and the first drive unit 26 is stopped. When the open / close button 53 is pressed, a power supply command is issued from the control unit to the power supply unit, and power is supplied to the solenoid 48 to drive it. At this time, the concave portion 51 moves forward together with the second connection portion 50, and this driving force is transmitted to the treatment portion driving mechanism 8 and converted into a force for opening the pair of forceps pieces 10, 11. open.
After the affected part is caught in the forceps pieces 10, 11, the open / close button 53 is released. At this time, the power supply to the solenoid 48 is stopped, the recess 51 moves in the direction of retreating toward the proximal end side of the channel 4, and the pair of forceps pieces 10 and 11 are closed.

After closing the pair of forceps pieces 10, 11, the retreat button 34 </ b> B is pressed to drive the first drive unit 26 to rotate the second pulley 23 in the direction opposite to that during forward movement, thereby causing the first connection unit 17 to move. The first endless wire 25 is rotated in the direction of moving to the proximal end side of the channel 4 to convey the forceps distal end portion 3 to the proximal end side of the channel 4 and perform an extraction operation.
In this way, the predetermined treatment is completed by conveying the forceps tip 3 to the position of the opening 16.
According to this endoscope treatment system 47, the same operation and effect as in the first embodiment can be obtained, but the treatment portion drive mechanism 8 is supported by supporting the forceps tip portion 3 on the first connection portion 17. Can be supported by the solenoid 48, and there is no need to provide a pulley or the like as in the first embodiment, and the inside of the insertion portion 13 can be simplified.

Next, a fifth embodiment will be described with reference to FIGS.
In addition, the same code | symbol is attached | subjected to the component similar to embodiment mentioned above, and description is abbreviate | omitted.
The difference between the fifth embodiment and the first embodiment is that in the first embodiment, the distal end cover 7 of the forceps distal end portion 3 is supported by the first connection portion 17 of the first endless wire 25. However, in the endoscope treatment system 55 according to the present embodiment, the first connection portion 56 is connected to the outer peripheral surface of the distal end cover 58 of the forceps distal end portion 57 so that the forceps side convex portion (the treatment instrument side convex portion). ) 60, a first concave portion 62 that can be engaged with the forceps-side convex portion 60 is provided on the outer peripheral surface of the first endless belt (first moving member) 61 formed in a belt shape. A second endless belt (second moving member) in which the connecting portion 63 is connected to the proximal end side of the treatment portion driving mechanism 8 to form an opening / closing side convex portion (movable side convex portion) 65 and formed in a belt shape. 66 is provided on the outer peripheral surface of the second endless belt 66 and can be engaged with the open / close-side convex portion 65. 7 is the point that is to be provided.

The first driving means 68 includes the first pulley 22, the second pulley 23, and the first endless belt 61 wound around the first pulley 22, the two sets of insertion portions 70, and The first pulley 26 and the first switch 27 rotate the second pulleys 23 simultaneously. Similarly to the first embodiment, the second driving means 71 includes a third pulley 30, a fourth pulley 31, a second endless belt 66 wound around them, and a second driving unit. 33,
The first driving means 68 and the second driving means 71 are respectively arranged at positions that divide the cross-sectional circumference of the channel 4 into three equal parts.

Next, an operation method of the endoscope treatment system 55 according to the present embodiment will be described below.
After inserting the insertion portion 13 of the endoscope 12 into the body cavity and confirming the affected part, the forceps side convex portion 60 of the distal end cover 58 of the forceps distal end portion 57 is moved to the first endless belt 61 through the opening portion 16. Engage with the recess 62. Further, the open / close convex portion 65 at the base end of the treatment portion drive mechanism 8 is engaged with the second concave portion 67 of the second endless belt 66. Then, the forward button 34A and the open button 35A are simultaneously pressed to rotate the second pulley 23 and the fourth pulley 31 in the same direction at the same speed, and the first endless belt 61 and the second endless belt 66 are channeled. 4 is moved.
Thereafter, treatment can be performed by operating in the same manner as in the first embodiment.

According to this endoscope treatment system 55, the same operation and effect as in the first embodiment can be obtained, but unlike the first embodiment, the second connection portion 63 and the first connection portion 56 are provided. It can be provided in a state of being connected to the forceps tip 57. Therefore, when the forceps tip portion 57 is supported by the first driving means 68 and the second driving means 71, respectively, the first endless belt is driven without driving the first driving portion 26 and the second driving portion 33. The forceps tip 57 and the first endless belt 61 and the treatment section drive mechanism 8 and the second endless belt 66 can be easily engaged at an arbitrary position 61.
Further, the forceps tip 57 can be conveyed by the advance and retreat of the first endless belt 61 and the second endless belt 66, and the treatment section drive mechanism 8 is opened and closed only by the movement of the second endless belt 66. Can do.

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.
For example, in the first embodiment, the first endless wire 25 is arranged through the channel 4 and the first wire passage hole 28 formed in the insertion portion 13 along the channel 4. The second endless wire 32 is arranged to pass through the channel 4 and the second wire passage hole 36 formed in the insertion portion 13 along the channel 4. As shown in FIGS. 12 to 14, the first endless wire 25 and the second endless wire 32 are connected to the channel without providing the first wire passage hole 28 and the second wire passage hole 36 therein. 4 may be arranged on the side surface. Thereby, the outer diameter of the insertion part 13 can be made smaller.

Similarly, as shown in FIGS. 15 to 17, the second endless wire 75 may be arranged on the same plane as the first endless wire 25 and inside the first endless wire 25. In this case, for example, the third pulley 72 has an outer diameter smaller than that of the first pulley 22 and is disposed closer to the base end side than the first pulley 22.
Further, as shown in FIGS. 17 to 20, in addition to the above, an endless wire is not wound around each pulley, but a first wire (first moving member) on which the first connecting portion 17 is supported. 76 is wound between the first pulley 22 and the second pulley 23, and the second wire (second moving member) 77 on which the second connecting portion 18 is supported is connected to the third pulley 72. And the fourth pulley 73 may be wound up.
Also in these cases, the outer diameter of the insertion portion 13 can be reduced as described above.

Furthermore, in the third embodiment, the anti-slip uneven portion 46 is composed of the convex portion of the spiral strip 43B and the concave portion between the winding pitches of the spiral strip 43B, but the belt surface of the toothed belt In this manner, the belt-shaped belt member may have an uneven portion formed on the inner peripheral surface.
Further, in place of the solenoid 48 in the fourth embodiment, as shown in FIG. 18, a second drive unit 80 in which a pinion 78 protrudes is provided, and a rack 81 that can be engaged with the pinion 78 is joined. Even when the treatment section drive mechanism 8 is engaged with the second connection section 50 that is formed via the recess 51, the same operation and effect as described above can be obtained.

  Furthermore, in the fifth embodiment, the first connection portion is connected to the outer peripheral surface of the tip cover 57 to form a forceps side recess (treatment instrument side recess), and the outer surface of the first endless belt 61 is connected to the forceps side. A first convex portion that can be engaged with the concave portion is provided, and the second connecting portion is connected to the proximal end side of the treatment portion drive mechanism 8 to be an open / close concave portion (movable side concave portion) to be a second endless. A second protrusion may be provided on the outer peripheral surface of the second endless belt 66 that can be engaged with the opening / closing recess.

1 is a side view including a partial cross section showing an endoscope treatment system according to a first embodiment of the present invention. It is a systematic diagram showing the principal part of the endoscope treatment system concerning a 1st embodiment of the present invention. It is XX sectional drawing of FIG. It is a systematic diagram which shows the drive means of the endoscope treatment system which concerns on the 1st Embodiment of this invention. It is a side view including the partial cross section which shows the endoscope treatment system which concerns on the 2nd Embodiment of this invention. It is a side view including the partial cross section which shows the endoscope treatment system which concerns on the 3rd Embodiment of this invention. It is a side view which shows the principal part of the endoscope treatment system which concerns on the 4th Embodiment of this invention. It is a side view including the partial cross section which shows the principal part of the endoscope treatment system which concerns on the 4th Embodiment of this invention. It is a side view including the partial cross section which shows the endoscope treatment system which concerns on the 5th Embodiment of this invention. It is a side view which shows the principal part of the endoscope treatment system which concerns on the 5th Embodiment of this invention. FIG. 10 is a YY sectional view of FIG. 9. It is a side view including the partial cross section which shows the endoscope treatment system which concerns on other embodiment of this invention. It is a front view of FIG. It is an AA arrow line view of FIG. It is a side view including the partial cross section which shows the endoscope treatment system which concerns on other embodiment of this invention. FIG. 16 is a front view of FIG. 15. It is a BB arrow line view of FIG. It is a side view including the partial cross section which shows the endoscope treatment system which concerns on other embodiment of this invention. It is a front view of FIG. It is CC arrow line view of FIG. It is a side view including the partial cross section which shows the principal part of the endoscope treatment system which concerns on other embodiment of this invention.

Explanation of symbols

1, 37, 42, 47, 55 Endoscopic treatment system
2 Treatment part 3, 38, 57 Forceps tip part (treatment unit)
4 Channel 5 Connection 6 Drive means 7, 58 Tip cover (treatment unit body)
8 treatment part drive mechanism 12 endoscope 13, 70 insertion part 17 first connection part 18, 50 second connection part 20, 68 first drive means 21, 71 second drive means 22 first pulley 23 Second pulley 25, 43 First endless wire (first moving member)
30, 72 Third pulley 31, 73 Fourth pulley 32 Second endless wire (second moving member)
40 Operation tube (extension)
46 Concavity and convexity portion for preventing slip 48 Solenoid (second driving means)
60 Forceps side convex portion (first connection portion, treatment instrument side convex portion)
61 First endless belt (first moving member)
62 1st recessed part 65 Opening-closing side convex part (2nd connection part, movable side convex part)
66 Second endless belt (second moving member)
67 2nd recessed part 76 1st wire (1st moving member)
77 Second wire (second moving member)

Claims (7)

A treatment unit having a treatment part;
A channel through which the treatment unit can be inserted;
A connecting portion that is movable in a direction parallel to the channel and supports the treatment unit;
An endoscope treatment system comprising driving means for moving and driving the connecting portion in a direction parallel to the channel. The treatment unit is a treatment unit main body that supports the treatment portion;
A treatment portion drive mechanism that is supported by the treatment unit main body and transmits the advance / retreat operation of the drive means to the treatment portion to be driven;
The driving means includes a first driving means and a second driving means,
A first connecting portion that is supported by the first driving means and supports the treatment unit body;
The endoscope treatment system according to claim 1, further comprising: a second connection portion that is supported by the second drive unit and supports the treatment portion drive mechanism. The first drive means is a first pulley pivotally supported on the distal end side of the insertion portion of the endoscope; and
A second pulley pivotally supported on the base end side of the insertion portion;
A first moving member wound around the first pulley and the second pulley along the channel to support the first connecting portion;
A third pulley pivotally supported by the second drive means on the first pulley side of the insertion portion;
A fourth pulley pivotally supported on the second pulley side of the insertion portion;
The inside of Claim 2 provided with the 2nd moving member wound around the said 3rd pulley and the said 4th pulley along the said channel, and supporting the said 2nd connection member. Endoscopic treatment system.   The endoscope treatment system according to claim 3, wherein an anti-slip concavo-convex portion is provided on the surfaces of the first moving member and the second moving member. The first drive means is a first pulley pivotally supported on the distal end side of the insertion portion of the endoscope; and
A second pulley pivotally supported on the base end side of the insertion portion;
A first moving member wound around the first pulley and the second pulley along the channel to which the first connecting portion is connected;
The endoscope treatment system according to claim 2, wherein the second driving unit and the second connection unit are disposed in the first connection unit.   A distal end is connected to the treatment unit main body and the treatment portion drive mechanism, and a proximal end is provided with an extension portion detachably attached to the first connection portion and the second connection portion. The endoscope treatment system according to any one of claims 2 to 5. The first connection portion is connected to the outer peripheral surface of the treatment unit main body to be one of a treatment instrument side concave portion or a treatment instrument side convex portion, and the treatment instrument side concave portion or the outer peripheral surface of the first moving member A first convex portion or a first concave portion that is engageable with one of the treatment instrument side convex portions;
The second connecting portion is connected to the proximal end side of the treatment portion driving mechanism and is provided as one of a movable side concave portion or a movable side convex portion and is provided toward the second moving member, The inner surface according to claim 3, wherein a second convex portion or a second concave portion that can be engaged with one of the movable-side concave portion or the movable-side convex portion is provided on an outer peripheral surface of the moving member. Endoscopic treatment system.

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