CN219207086U - Auxiliary traction device for endoscope treatment - Google Patents

Abstract

The application discloses an auxiliary traction device for endoscopic treatment, which includes a clamping part, a propulsion part and an operating part, wherein the propelling part includes a catheter, a steel wire assembly and a traction wire, and the end of the catheter tube body close to the clamping part is respectively provided with a first through hole. Perforation and the second through hole; one end of the steel wire assembly is detachably connected to the clip assembly of the jaw part, and one end of the pull wire is connected to the sleeve of the jaw part; the operation part includes a base, a connecting ring, a push-pull assembly and a rotating assembly, The base is formed with an inner cavity and a window is arranged in the axial direction, and the connecting ring connects the base with the catheter; the push-pull assembly is connected with the other end of the steel wire assembly, and the push-pull assembly can move forward and backward along the window; the rotation assembly is connected with the other end of the traction wire, And it is connected with the base in a manner that can rotate around the central axis of the base. When the rotating component rotates, it drives the traction line to move telescopically.

Description

An auxiliary traction device for endoscopic therapy

technical field

The utility model relates to the technical field of medical instruments, in particular to an endoscopic treatment auxiliary traction device.

Background technique

With the development of endoscopic treatment technology, the area of lesions resected by endoscopic surgery is getting larger and larger, and the depth of intervention is from the surface of the lumen of the digestive canal to breaking through the wall of the digestive canal. However, complete resection of large-area lesions faces greater challenges and difficulties: large In the process of separating the large area of lesion tissue from the wall of the digestive canal, the target tissue to be separated will cover the incision due to gravity or tissue elasticity, resulting in limited space and field of view for endoscopic treatment, resulting in difficulty in the progress of the treatment and prolonging the operation time ; Therefore, the endoscopic operator needs to implement extracorporeal traction to lift the tissue covering the incision to assist the treatment operation.

Existing auxiliary traction devices for endoscopic treatment are mostly composed of tissue clip devices (operating part, propulsion part, clamping part) and traction wires. The tissue clamp device enters through the instrument channel of the endoscope, wherein the jaw part protrudes from the front end of the endoscope, and the traction wire is outside the endoscope, and one end of the traction wire is tied to the clamp part of the tissue clamp device, and the tissue clamp is clamped through the endoscope. The device is delivered into the body with a pull wire. Operate the moving direction of the endoscope to guide the tissue clamp device and the traction wire close to the target tissue, operate the tissue clamp device to guide the clamp part to clamp the target tissue, and then release the clamp part of the tissue clamp device, and the traction wire is fixed on the target tissue along with the clamp part position, the remainder of the tissue clip device exits the body. The operator holds one end of the traction wire and pulls it outside the body, so that the tissue clamped by the jaws is lifted towards the outside of the body.

The above-mentioned existing auxiliary traction device for endoscopic treatment needs to firstly penetrate the tissue clip device from the instrument channel of the endoscope until it protrudes from the port of the instrument channel, and then bind the traction wire to the jaw part, and the installation steps are cumbersome. In addition, since the existing device connects tissues in the body by traction from outside the body, the traction effect of the two-point connection has only one traction direction, which cannot meet the actual clinical traction needs. The adjustment of the clamp direction can only be done by operating the adjustment direction of the endoscope to guide the approach to the target tissue, and then release the clamp portion, which is inconvenient to adjust the direction. Therefore, the existing devices cannot meet the actual clinical needs, and there is an urgent need for an improved auxiliary traction device for endoscopic therapy, which can solve the above technical problems.

Contents of the invention

In view of the deficiencies in the prior art, the utility model provides an auxiliary pulling device for endoscopic treatment, which can conveniently adjust the pulling direction of the target tissue.

In order to achieve the above-mentioned purpose of the invention, the utility model provides the following technical solutions:

An auxiliary traction device for endoscopic treatment, comprising a clamping part, a propulsion part and an operating part, wherein the clamping part includes a clip assembly and a sleeve, the sleeve is formed with an inner cavity, and the clip assembly can move along the inner cavity of the sleeve; The propulsion part includes a catheter, a steel wire assembly and a pulling wire. The end of the pipe body of the catheter near the clamp part is respectively provided with a first through hole and a second through hole; one end of the steel wire component is detachably connected to the clamp part of the clamp part. The other end of the component is extended in the inner cavity of the catheter; one end of the pulling wire is connected to the sleeve of the jaw part, and the other end of the pulling wire is extended in the inner cavity of the catheter after passing through the first through hole and the second through hole respectively; operation The part includes a base, a connecting ring, a push-pull assembly and a rotating assembly. The base is formed with an inner cavity and a window is arranged along the axial direction. The connecting ring connects the base with the catheter; Moving back and forth, the steel wire assembly moves accordingly and drives the clip assembly of the jaw part to release or clamp the tissue; the rotating assembly is connected to the other end of the traction wire, and is connected to the base in a manner that can rotate around the central axis of the base. When the component rotates, the traction line is driven to move telescopically, so that the catheter of the traction propulsion part is curled or stretched to adjust the orientation of the jaw part.

Preferably, a mounting seat is arranged along the radial direction of the base, and the mounting seat is provided with a traction wire hole and a connecting hole, the pulling wire hole can pass through the pulling wire, and the connecting hole is rotatably connected to the rotating component.

Preferably, the rotation assembly includes a rotation operation ring and a connecting bolt, and the rotation operation ring is connected to the mounting seat through the connection bolt.

Preferably, the push-pull assembly includes a pair of symmetrically arranged push-pull operation rings and a center beam, the push-pull operation rings are respectively fixed on both ends of the center beam, the center beam is provided with a middle channel and a lock bolt, the middle channel can pass through the base, and the lock bolt The window can be inserted into the base, and the locking bolt is connected to the other end of the wire assembly.

Preferably, the jaw part further includes a hook, which is connected to the sleeve so as to install the auxiliary traction device for endoscopic treatment at the front end of the endoscope.

Preferably, the hook includes a vertical portion and a bent portion extending from one end of the vertical portion, the vertical portion is connected to the sleeve, and the bent portion freely extends along the outer wall of the sleeve.

Preferably, the clip assembly includes a pair of symmetrically arranged clips, a connecting arm and a snap-fit buckle, the connecting arm is a symmetrically curved and outwardly stretched elastic piece, and the two ends of the connecting arm are respectively connected to the symmetrically arranged clips; the snap-fit buckle It is arranged at the bottom of the connecting arm, and one end is open, and the snap-fit buckle is detachably connected with one end of the steel wire assembly.

Preferably, a bolt seat is provided along the radial direction of the sleeve from the bottom wall of the inner cavity of the sleeve, and a pair of bosses are symmetrically arranged on the left cavity wall and the right cavity wall of the inner cavity of the sleeve; The connecting point, the sleeve is connected with the pulling wire through the pulling wire connecting point.

Preferably, the pulling wire is dental floss.

The auxiliary traction device for endoscopic treatment provided by the utility model is equipped with a push-pull assembly and a rotating assembly, and the push-pull assembly drives the steel wire assembly to move back and forth so as to drive the clip assembly of the clamp part to release or clamp the tissue; the rotating assembly penetrates the catheter The pulling line of the tube body moves telescopically to realize the adjustment of the pulling direction of the tissue. The auxiliary traction device for endoscopic therapy constructed in this way can adjust the pulling direction of the target tissue without adjusting the direction of the endoscope by driving the clamp part to adjust the pulling direction through the curling of the pulling wire. The auxiliary traction device for endoscopic treatment provided by the present invention can be conveniently placed outside the endoscope, which can improve work efficiency, and can be used in conjunction with an endoscope with a single instrument channel for external installation, and has a wide application range.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a perspective view of an endoscopic treatment auxiliary traction device in an embodiment of the present invention.

Fig. 2 is a cross-sectional view of the endoscopic therapy auxiliary traction device in the embodiment of the present invention.

Fig. 3 is a radial cross-sectional view of the jaw part in the embodiment of the utility model, the clamping assembly is in the released state in the left figure, and the clamping assembly is in the clamping state in the right figure.

Fig. 4 is a diagram of the catheter bending operation state of the endoscopic therapy auxiliary traction device in the embodiment of the present invention.

Fig. 5 is a diagram showing the separation state of the jaws of the auxiliary traction device for endoscopic treatment in the embodiment of the present invention.

Fig. 6 is a clinical schematic diagram of an endoscopic therapy auxiliary traction device in an embodiment of the present invention.

Detailed ways

The technical solutions of the present utility model will be further specifically described below through the embodiments and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals designate the same or similar components. The following description of the embodiments of the utility model with reference to the accompanying drawings is intended to explain the general inventive concept of the utility model, and should not be construed as a limitation of the utility model.

In addition, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a comprehensive understanding of the embodiments of the present disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in diagrammatic form to simplify the drawings.

According to a general technical concept of the utility model, an auxiliary traction device for endoscopic treatment is provided, including a clamping part, a propulsion part and an operating part, wherein the clamping part includes a clip assembly and a sleeve, and the sleeve is formed with an inner cavity, The clip assembly can move along the inner cavity of the sleeve; the propelling part includes a catheter, a steel wire assembly and a pulling wire, and the end of the pipe body of the catheter near the clamp part is respectively provided with a first through hole and a second through hole; one end of the steel wire assembly and the clamp The clip assembly of the clamp part can be connected separately, and the other end of the steel wire assembly is extended in the inner cavity of the catheter; one end of the pull wire is connected to the sleeve of the clamp part, and the other end of the pull wire passes through the first through hole and the second through hole respectively. The through hole is extended in the inner cavity of the catheter; the operation part includes a base, a connecting ring, a push-pull assembly and a rotating assembly. The other end of the push-pull assembly can move forward and backward along the window, and the steel wire assembly moves accordingly to drive the clip assembly of the jaw part to release or clamp the tissue; the rotation assembly is connected to the other end of the traction line, and can be wound The central axis of the base is connected to the base in a rotating manner. When the rotating component rotates, it drives the traction line to move telescopically, so that the catheter of the traction propulsion part is curled or stretched to adjust the orientation of the jaw part.

As shown in FIGS. 1-3 , in an embodiment of the present invention, the auxiliary traction device for endoscopic treatment includes a clamping part 100 , a propulsion part 200 and an operating part 300 .

In the embodiment of the present invention, the jaw part 100 includes a clip assembly 110 and a sleeve 120 . The sleeve 120 is formed with an inner cavity, and the clip assembly 110 can move along the inner cavity of the sleeve 120 .

In some preferred embodiments, the jaw part 100 further includes a hook 130 connected with the sleeve 120 . Since the hook 130 is connected to the sleeve 120, and the sleeve 120 is connected to the propulsion part 200 and the operation part 300, the auxiliary traction device for endoscopic treatment in this embodiment of the present invention can be integrally placed at the front end of the endoscope. The hook structure can facilitate the operator to quickly install the auxiliary traction device for endoscopic treatment, improving work efficiency. The hook 130 is installed at the front end of the endoscope, such as a transparent cap provided at the front end of the endoscope.

In some preferred embodiments, the hook 130 includes a vertical portion 131 and a bent portion 132 extending from one end of the vertical portion 131 . The vertical portion 131 is connected to the sleeve 120 , for example, the vertical portion 131 is provided with threads, the sleeve 120 is provided with threaded holes, and the vertical portion 131 is connected to the sleeve 120 through threads. The bent portion 132 extends freely along the outer wall of the sleeve 120 , and in order to enhance the hooking effect, the bent portion 132 may be made of elastic material.

In some preferred embodiments, as shown in FIG. 3 , the clip assembly 110 includes a pair of symmetrical clips 111 , connecting arms 112 and buckles 113 . The connecting arm 112 is a symmetrically bent and stretched elastic piece, and the two clamping pieces 111 are respectively connected to two ends of the connecting arm 112 . A buckle 113 is provided at the bottom of the connecting arm 112 , and the buckle 113 is open at one end. One end of the wire assembly 220 is connected to the buckle 113 and can be disengaged from the opening of the buckle 113 under a certain force, that is, the buckle 113 and the wire assembly 220 are detachably connected. For example, one end of the wire assembly 220 is provided with a snap bolt 221, and the snap bolt 221 is connected to the snap buckle 113. When the force is connected, the snap bolt 221 is disengaged from the snap buckle 113 , so that the wire assembly 220 is separated from the clip assembly 110 (or the jaw part 100 ).

In some preferred embodiments, the buckle can be made of some materials with excellent mechanical strength, such as polyethylene. The opening of the buckle 113 can be designed as a semi-open round hole or an oblong hole for accommodating the snap bolt 221 of the wire assembly 220 .

In some preferred embodiments, the bottom wall of the inner cavity of the sleeve 120 is provided with bolt seats 121 along the radial direction of the sleeve 120 , and a pair of bosses 122 are symmetrically arranged on the left cavity wall and the right cavity wall of the sleeve inner cavity. When the clip assembly 110 is pulled by the wire assembly 220 to move, the bolt seat 121 and the pair of bosses 122 can constrain and lock the connecting arm 112 of the clip assembly 110 . On the other hand, the bolt seat 121 can also be inserted into the vertical portion 131 of the hook 130 , so that the hook 130 is connected to the sleeve 120 . One end of the inner cavity of the sleeve 120 close to the catheter 210 is provided with a pull wire connection point, and the sleeve 120 is connected to the pull wire 230 through the pull wire connection point. After the pulling wire 230 is connected to the sleeve 120, when the pulling wire 230 is pulled, it drives the catheter 210 to curl, and drives the sleeve 120 and the clip assembly 110 to curl accordingly, so as to realize the overall curling of the jaw part 100 to adjust the clamping direction. It is convenient to pull the tissue from different angles.

When the jaw part 100 clamps the tissue, the push-pull operation ring 331 is pushed back, and the pulling wire assembly 220 pulls the clip assembly 110 . The arched bottom of the connecting arm 112 of the clip assembly 110 is squeezed by a pair of bosses 122 provided on the left and right chamber walls of the sleeve 120 to produce elastic deformation, and the two ends of the opening of the connecting arm 112 drive the two clips Close inwards; the arched bottom of the connecting arm 112 crosses a pair of bosses 122, until the curved part of the middle part of the two wings of the connecting arm 112 enters between the bosses, the connecting arm 112 can be constrained and locked, so that the two clips remain clamped. closed state. Continue to push the push-pull operation ring 331 backward to control the backward movement of the steel wire assembly 220. When the pulling force applied to the steel wire assembly 220 is greater than the deformation limit of the opening of the snap-in buckle 113, the snap-in bolt 221 of the steel wire assembly 220 will disengage from the snap-in buckle 113 , so as to separate the clip assembly 110 from the wire assembly 220 of the propelling part 200 .

In the embodiment of the present invention, as shown in FIGS. 1-5 , the advancing part 200 includes a catheter 210 , a wire assembly 220 and a pulling wire 230 .

One end of the tube body of the catheter 210 close to the jaw part 100 is respectively provided with a first through hole and a second through hole, and the two through holes can allow the pulling wire 230 to pass through. In the illustrated embodiment, the first through holes and the second through holes are arranged axially along the conduit 210 , but the present invention is not limited thereto, and can also be arranged according to actual needs.

One end of the wire assembly 220 is detachably connected to the clip assembly 110 , for example, one end of the wire assembly 220 is provided with a snap bolt 221 , and the snap bolt 221 can be connected to the snap buckle 113 provided at the bottom of the connecting arm 112 of the clip assembly 110 . The other end of the wire assembly 220 is extended in the lumen of the catheter 210 until it is drivingly connected with the push-pull assembly 330 of the operation part 300 . That is, the steel wire assembly 220 can move back and forth in the inner cavity of the catheter 210 of the propulsion part 200 under the driving action of the push-pull assembly 330 , and the forward and backward movement of the steel wire assembly 220 under the driving action can drive the clip assembly 110 detachably connected with the steel wire assembly 220 Move back and forth to release or clamp tissue. When the wire assembly 220 is driven to move backward to a certain position, the snap bolt 221 of the wire assembly 220 is disengaged from the clip 113 at the bottom of the connecting arm 112 of the clip assembly 110, so that the wire assembly 220 and the clip assembly 110 (or The separation of the jaw part 100). In some preferred embodiments, the steel wire assembly 220 is made of stainless steel, which can quickly transmit the force exerted by the operator.

One end of the pulling wire 230 is connected to the sleeve 120 of the clamping part 100, and the other end of the pulling wire 230 is extended in the inner cavity of the catheter 210 after passing through the first through hole and the second through hole provided in the tube body of the catheter 210, Finally, it is connected with the rotating assembly 340 of the operation part 300 . That is, one end of the pull wire 230 is connected to the lumen of the sleeve 120, and then passes through the first through hole from the lumen of the catheter 120 to the outside of the catheter 120, and then passes through the second through hole from the outside of the catheter 120 and returns to the catheter 120 again. lumen. For example, the sleeve 120 is provided with a pull wire connection point, and one end of the pull wire 230 is connected to the pull wire connection point. The pulling wire 230 moves telescopically under the rotation of the rotating assembly 340 of the operating part 300. When the rotary driver 320 rotates forward, the pulling wire 230 is driven to shrink, and the extension length of the pulling wire 230 outside the tube body of the catheter 210 is gradually shortened until it is shorter than When the distance between the first through hole and the second through hole on the tube body of the catheter 210 is reduced, the tube body of the catheter 210 between the two through holes is curled, so that the pulling catheter 210 or the jaw part 100 is curled. The crimping of the catheter 210 or the jaw part 100 can facilitate the operator to adjust the pulling direction of the target tissue so as to perform intraoperative operations. When the rotary driver 320 reversely rotates, it drives the pulling wire 230 to extend, and the extension length of the pulling wire 230 outside the catheter 210 body gradually extends until it is longer than the catheter 210 body, and when the pulling wire is stretched, it can be Manually pull the tissue in vitro or in vivo by grasping the operating part. After the wire assembly 220 is separated from the clip assembly 110, the main body of the sleeve 120 is also separated from the catheter 210. The difference is that since the pull wire 230 is still connected to the pull wire connection point of the sleeve 120, the operator can still use the pull wire to The sleeve 120 is pulled to pull the clip assembly 110 in different directions to clamp the tissue. In some preferred embodiments, dental floss can be used as the pulling wire. The dental floss material is tough and wear-resistant, and can firmly penetrate and connect components such as the catheter 210 to quickly transmit pulling force.

In the embodiment of the present invention, the operation part 300 includes a base 310 , a connecting ring 320 , a push-pull assembly 330 and a rotation assembly 340 . The base 310 is formed with an inner cavity 311 and a window 312 is provided along the axial direction, and the window 312 can be inserted into the push-pull assembly 330 and move forward and backward along the window 312 . The connecting ring 320 connects the base 310 with the conduit 210 of the propulsion part 200 , that is, the connecting ring 320 forms an inner cavity, and the conduit 210 is connected with the inner end of the base 310 .

In some preferred embodiments, at the distal end of the lumen of the base 310 , a mount 313 is arranged radially from the lumen wall thereof, and the mount 313 is provided with a pull wire hole 313 a and a connecting hole 313 b. The pull wire hole 313a can pass through the pull wire 230, that is, the other end of the pull wire passes through the first through hole and the second through hole of the tube body of the catheter 210, then passes through the middle channel of the center beam 332, and then passes through the pull wire The tunnel 313a is connected with the rotating assembly 340 . The connecting hole 313b is rotatably connected to the rotating assembly 340 . The rotatable connection means that when the rotating assembly 340 rotates around the connecting hole 313b, it will drive the pull wire 230 connected to it to rotate so as to realize the telescopic movement of the length of the pull wire 230. lengthening or shortening. When the length of the pulling wire 230 is shorter than the length of the tube body between the two through holes on the catheter 210, the pulling wire 230 can drive the catheter 210 to curl, and then drive the jaw part 100 to move, finally realizing the adjustment of the pulling direction of the target tissue. When the length of the pulling wire 230 is longer than the length of the tube body between the two through holes on the catheter 210, the catheter 210 can be manually driven to move in the direction of the body or outside the body, and the driving force can be transmitted to the pulling wire 230, thereby adjusting the pulling force of the jaw part 100. organize.

In some preferred embodiments, the rotating assembly 340 includes a rotating operation ring 341 and a connecting bolt 342 . After the rotating operation ring 341 is inserted into the connecting hole 313b, the rotating operating ring is connected to the mounting seat 313 through the connecting bolt 342 . The rotating operation ring 341 can rotate along the center of the connecting hole 313b. The handle end of the connecting bolt 342 is connected with the pulling wire 230 passing through the pulling wire hole 313a, and the pulling wire 230 can be accommodated in the handle end of the connecting bolt 342 by rotating the operating ring 341 .

The push-pull assembly 330 is connected to the other end of the wire assembly 220 , and the push-pull assembly 330 can move back and forth along the window 3122 . The push-pull assembly 330 moves back and forth along the window 312, driving the connected wire assembly 220 to move back and forth, and the wire assembly 220 drives the detachably connected clip assembly to move back and forth, thereby releasing or clamping the target tissue. In some preferred embodiments, the push-pull assembly 330 includes a pair of symmetrically arranged push-pull operation rings 331 and a center beam 332 . The push-pull operation ring 331 can be operated with fingers. The push-pull operation ring 331 is respectively fixed on two ends of the center beam 332 , and the center beam 332 is provided with a middle channel and a locking bolt, and the middle channel can cooperate with the base 310 for insertion of the base 310 . Overall, the middle channel of the center beam 332 and the window 312 of the base 310 are vertically intersected. The lock bolt 333 of the center beam 332 can be inserted into the window 312 of the base 310. On the one hand, the lock bolt 333 cooperates with the window 312 to limit the movement of the push-pull assembly 330 as a whole along the window 312. On the other hand, the lock bolt and the steel wire assembly 220 The other end is connected, so that when the push-pull operation ring 331 drives the center beam 332 to move back and forth, the lock bolt of the center beam 332 drives the steel wire assembly 220 to move back and forth.

The auxiliary traction device for endoscopic treatment provided by the utility model is equipped with a push-pull assembly and a rotating assembly, and the push-pull assembly drives the steel wire assembly to move back and forth so as to drive the clip assembly of the clamp part to release or clamp the tissue; the rotating assembly penetrates the catheter The pulling line of the tube body moves telescopically to realize the adjustment of the pulling direction of the tissue. The auxiliary traction device for endoscopic therapy constructed in this way can adjust the pulling direction of the target tissue without adjusting the direction of the endoscope by driving the clamp part to adjust the pulling direction through the curling of the pulling wire. The auxiliary traction device for endoscopic treatment provided by the present invention can be conveniently placed outside the endoscope, which can improve work efficiency, and can be used in conjunction with an endoscope with a single instrument channel for external installation, and has a wide application range.

With reference to FIGS. 4-6 , the operation method of the endoscopic treatment auxiliary traction device provided by the embodiment of the present invention will be introduced below. It should be noted that this operation method is only for illustration, and the present invention is not limited thereto.

Installing the auxiliary traction device for endoscopic treatment: the operator places the entire auxiliary traction device for endoscopic treatment at the front end of the endoscope (for example, a transparent cap) through the hook 130 . The two clips of the clip assembly 110 of the clamp part 100 are closed toward the center, that is, in a clamped shape, which is convenient for passing through the human cavity.

Pushing the endoscope: The operator inserts the endoscope through the body cavity, the clamping part 100 and the pushing part 200 follow the endoscope into the body to the target tissue, and the operating part 300 stays outside the body. After the endoscope reaches the target position, keep the position of the endoscope unchanged, and push the propulsion part 200 forward, so that the hook 30 slides out of the transparent cap of the endoscope, so that the entire endoscope treatment auxiliary traction device is separated from the endoscope.

The jaw part is opened: the operator pushes the push-pull operation ring 331 to the front end of the base 310 (that is, the end close to the propulsion part 200), and the push-pull operation ring 331 transmits the thrust force through the steel wire assembly 220 connected to it to drive the jaw part The two clips of the clip assembly 110 of 100 are opened.

Adjust the clamping direction of the pulling line: operate the rotating operation ring 341 to shrink the pulling line 230, and when the length of the pulling line 230 protrudes from the outer wall of the catheter 210 is less than the distance between the two holes on the body of the catheter 210, the gap between the two holes is caused. The tube body of the catheter 210 is crimped to control the jaw part 100 close to the target tissue.

Clamping the tissue by the jaws: after the jaws 100 reach the target position, push and pull the operation ring 331 to move to the rear end of the base 310 (that is, the end close to the rotation operation ring 341 ). When the push-pull operation ring 331 moves, the pull wire assembly 220 pulls the clip assembly 110, and the arched bottom of the connecting arm 112 of the clip assembly 110 is squeezed by a pair of bosses 122 provided on the left and right chamber walls of the sleeve 120 , produce elastic deformation, the two ends of the opening of the connecting arm 112 drive the two clips to close inward; the arched bottom of the connecting arm 112 crosses a pair of bosses 122 until the curved part of the middle part of the two wings of the connecting arm 112 enters between the bosses, The connecting arm 112 can be constrained and fixed to keep the two clips in a closed state. Continue to push the push-pull operation ring 331 back, when the pulling force applied to the wire assembly 220 is greater than the deformation limit of the opening of the buckle 113, the snap bolt 221 of the wire assembly 220 is disengaged from the buckle 113, thereby connecting the jaw part 100 with the buckle 113. The propulsion section 200 separates. That is, the direction of the jaws is adjusted through the pulling wire, so that the jaws can reach the target tissue position.

The traction wire further adjusts the clamping direction: the clamping part 100 clamps and locks the target tissue, and the operator reversely rotates and extends the traction wire by rotating the operating ring 341 , and the extracorporeal traction can be performed in vitro or in vivo. When the clamping direction is further adjusted, the traction wire remains stretched. At this time, the pulling force exerted by the manual operation part 300 is pulled toward the in vivo direction, and the traction wire 230 drives the target tissue clamped by the jaw part 100 toward the internal direction. Lifting: the pushing force exerted by the operation part 300 is pushed toward the outside of the body, and the traction wire 230 acts as a fulcrum on the catheter 210 to convert it into a pulling force to drive the target tissue clamped by the jaw part 100 to lift toward the outside of the body. It should be noted that the "in vivo direction" and "in vitro direction" in this embodiment refer to the direction of the tissue relative to the operator, wherein the "in vivo direction" refers to the direction close to the operator, and the "in vitro direction" refers to the direction of the tissue relative to the operator. Keep out of the direction of the operator. Both "in vivo direction" and "in vitro direction" are for uncovering tissues. In practice, the direction of tissue incision may be divided into incision from the inside of the body and incision from the outside of the body. If incision is made from the inside of the body, the direction of traction is outward; if incision is made from the outside of the body, the direction of traction is inward. When the tissue opening is large, by further adjusting the pulling direction of the clamp to the tissue, the tissue can be opened or covered for specific intraoperative operations. As shown in the rightmost figure in Figure 6, the tissue is cut from the inside of the body, and when the traction wire 230 is stretched, the catheter 210 is manually pushed forward through the operation part 300 to move, and then the traction wire 230 and the jaw connected to the traction wire 230 are driven. 100 moves, thereby pulling the tissue toward the outside of the body to achieve the purpose of uncovering the tissue.

Those skilled in the art can understand that the above-described embodiments are exemplary, and those skilled in the art can improve them, and the structures described in various embodiments do not conflict with each other in terms of structure or principle Can be combined freely.

Although the utility model has been described in conjunction with the drawings, the embodiments disclosed in the drawings are intended to illustrate the preferred implementation of the utility model, and should not be construed as a limitation of the utility model.

Although some embodiments of the present general inventive concept have been shown and described, those skilled in the art will understand that changes can be made to these embodiments without departing from the principles and spirit of the present general inventive concept. The scope is defined by the claims and their equivalents.

Claims (9)

1. An auxiliary traction device for endoscopic treatment, comprising a clamping portion, a propelling portion and an operating portion, characterized in that: The jaw part includes a clip assembly and a sleeve, the sleeve is formed with an inner cavity, and the clip assembly can move along the inner cavity of the sleeve; The propulsion part includes a catheter, a steel wire assembly and a pulling wire, and one end of the pipe body of the catheter near the clamp part is respectively provided with a first through hole and a second through hole; one end of the steel wire assembly is connected to the clamp The clip assembly of the jaw part is detachably connected, and the other end of the steel wire assembly is extended in the inner cavity of the catheter; one end of the pulling wire is connected to the sleeve of the jaw part, and the other end of the pulling wire is respectively After passing through the first through hole and the second through hole, it is extended in the inner cavity of the catheter; The operating part includes a base, a connecting ring, a push-pull assembly and a rotating assembly, the base is formed with an inner cavity and a window is arranged in the axial direction, and the connecting ring connects the base with the catheter; the push-pull assembly and The other end of the steel wire assembly is connected, the push-pull assembly can move back and forth along the fenestration, the steel wire assembly moves accordingly and drives the clip assembly of the jaw part to release or clamp the tissue; the The rotating assembly is connected to the other end of the pulling wire, and is connected to the base in a manner that can rotate around the central axis of the base. When the rotating assembly rotates, it drives the pulling wire to move telescopically, thereby pulling the propulsion part The catheter is crimped or stretched to adjust the jaw orientation. 2. The auxiliary traction device for endoscopic treatment according to claim 1, characterized in that, a mounting seat is provided along the radial direction of the base, and the mounting seat is provided with a traction wire tunnel and a connecting tunnel, and the traction wire tunnel The pulling wire can pass through, and the connecting hole is rotatably connected with the rotating assembly. 3. An auxiliary traction device for endoscopic therapy according to claim 2, wherein the rotating assembly includes a rotating operation ring and a connecting bolt, and the rotating operating ring is connected to the mounting base through the connecting bolt . 4. An auxiliary traction device for endoscopic treatment according to any one of claims 1-3, characterized in that, the push-pull assembly includes a pair of symmetrically arranged push-pull operation rings and a center beam, and the push-pull operation rings are respectively fixed at both ends of the middle beam, the middle beam is provided with a middle passage and a lock bolt, the middle passage can pass through the base, the lock bolt can be inserted into the window of the base, the lock A peg is connected to the other end of the wire assembly. 5. An auxiliary traction device for endoscopic treatment according to claim 1, characterized in that, the jaw part further includes a hook, and the hook is connected with the sleeve so that the endoscopic treatment can be The auxiliary traction device is installed at the front end position of the endoscope. 6. An endoscopic treatment auxiliary traction device according to claim 5, wherein the hook comprises a vertical portion and a bending portion extending from one end of the vertical portion, and the vertical portion is connected to the vertical portion. The sleeve is connected, and the bent portion freely extends along the outer wall of the sleeve. 7. An auxiliary traction device for endoscopic treatment according to claim 1, wherein the clip assembly comprises a pair of symmetrically arranged clips, connecting arms and buckles, and the connecting arms are symmetrically curved The two ends of the connecting arm are respectively connected to symmetrically arranged clips; the snap-fit buckle is arranged at the bottom of the connecting arm, and one end is open, and the snap-fit buckle is connected to the steel wire assembly One end of the detachable connection. 8. The auxiliary traction device for endoscopic treatment according to claim 1 or 7, characterized in that, a bolt seat is arranged along the radial direction of the sleeve from the bottom wall of the inner cavity of the sleeve, and the inside of the sleeve The left cavity wall and the right cavity wall of the cavity are symmetrically provided with a pair of bosses; the end of the inner cavity of the sleeve close to the catheter is provided with a traction line connection point, and the sleeve is connected to the traction line through the traction line connection point. connect. 9. The endoscopic treatment auxiliary traction device according to claim 1, wherein the traction wire is dental floss.

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