CN210277289U - Chute type multi-arm clamp - Google Patents

Abstract

The application provides a slotted dobby clamp, includes: handle, pipe, clamping part, spring pipe and control wire. In practical application, an operator applies axial pushing force and pulling force on the handle to drive the control line to move so as to realize the opening, closing and locking of the clamping part. In addition, the side clamping arms and the clamping seats in the clamping parts can be very easily separated from the catheter or the spring tube to retain the human body, so that the functions of hemostasis and tissue suture are achieved. The application provides a slotted dobby presss from both sides can reach to be detained in human interior instrument length shortest through the cooperation of side arm lock with the holder. And the motion sliding chute structure on the side clamping arm can realize accurate and repeatable opening and closing, simplifies the operation and improves the success rate.

Description

Chute type multi-arm clamp

Technical Field

The application relates to the technical field of medical instruments, in particular to a sliding groove type multi-arm clamp.

Background

The EMR (endoscopic mucosal resection) and ESD (endoscopic mucosal dissection) under the endoscope have high cure rate for early canceration and are widely applied in clinic. For endoscopic submucosal resection and dissection, forceps or clips suitable for endoscopic environments are required to be used for postoperative wound surface suturing.

In practical application, the operating space under the endoscope is small, the working cavity channel passing through the endoscope is small, and in the physiological bending of a human body, aiming at the bleeding part of a large wound surface, the width of an opening opened after an existing forceps or clip product reaches a pathological change part is limited, generally 11mm, and for a 50mm oversized wound surface, the whole wound surface cannot be covered. Therefore, in order to treat the oversized wound surface, an endoscopist needs to perform purse-string suturing, namely, an annular plastic ring is screwed in advance, and then clamping arms or clips with existing small openings are placed along the plastic ring on the periphery of the wound surface in a dense piling mode; finally, the tail part of the plastic ring is hooked by a releaser hook special for the plastic ring to tighten the plastic ring, and as the clamping arms or the clips clamp the plastic ring wire and the wound tissue at the same time, all the clamping arms and the clips are folded together when the ring is tightened, and a large wound of 50mm can be sutured.

However, the above method is complicated in operation, resulting in a long operation time. And when tightening up the plastic ring, thereby arm lock or clip head can overturn and sink into in the surface of a wound and be unfavorable for the postoperative to drop naturally, consequently, the endoscope doctor can need to operate the action of tightening up the ring more carefully, opens the circle once more when if upset and straightens arm lock or clip head and tighten up again with other apparatus, so the operation time lengthens again to the success rate further reduces.

SUMMERY OF THE UTILITY MODEL

The application provides a slotted dobby clamp to solve the problem that the operation of the traditional big wound surface suture clamp is complicated, and the success rate is low.

The application provides a slotted dobby clamp for hemostasis and tissue suturing under the guidance of an endoscope for the alimentary canal, comprising: handle, pipe, clamping part and control line. Wherein the proximal end of the catheter is connected to the handle; the clamping part is detachably connected to the distal end of the catheter; a control wire is disposed within the conduit to connect the gripping portion and the handle.

The clamping part comprises at least two side clamping arms, at least one middle clamping arm and a clamping seat; the side clamping arms are provided with moving chutes, the clamping seats are provided with pin shafts, and the pin shafts can slide in the moving chutes to control the side clamping arms to open and close; the far end of the moving chute is provided with a protruding part so as to limit the pin shaft at the far end of the moving chute and lock the side clamping arm; the middle clamping arm is fixedly connected with the clamping seat;

the number of the control lines is the same as that of the side clamping arms, and each control line is connected with the side clamping arms respectively to independently control the opening and closing of the side clamping arms.

Optionally, the protruding part comprises a buffer cavity and a limiting protrusion; the limiting bulge protrudes out of the side wall of the moving chute; the buffer cavity is arranged on the side clamping arm and is close to the through hole at the far end of the moving chute, so that the limiting protrusion forms a cantilever beam structure.

Optionally, the slotted dobby further comprises a spring tube connected to the catheter, the spring tube being a cylindrical sheath surrounding the control wire; the spring tube is detachably connected with the clamping seat.

Optionally, the proximal end of the holder is a circular tubular structure, and a plurality of circular arc-shaped protrusions are uniformly arranged on the side wall of the circular tubular structure; the spring tube is provided with a round hole matched with the arc-shaped bulge so as to realize detachable connection with the clamping seat.

Optionally, the clamping part further comprises a separation claw connected with the clamping seat; the separation claw comprises a traction part connected with the control wire and a plurality of deformable connecting arms arranged on the traction part;

and a plurality of holes are formed in the spring tube or the clamping seat and used for fixing the connecting arm and separating the connecting arm from the spring tube or the clamping seat when the pulling force of the control wire is increased to the deformation limit of the connecting arm.

Optionally, a connecting pipe is arranged on the control line, and the control line penetrates through the connecting pipe; the connecting pipe contacts the pulling portion to pull the separation claw.

Optionally, a step is arranged in the middle of the clamping seat; the near end of the side clamping arm is provided with a tail hook, and the side clamping arm is locked by the tail hook and the step in a matching manner.

Optionally, the far end of the control line is provided with a connecting column, the near end of the side clamping arm is provided with a tail hole, the tail hole is a semi-open round hole or a long round hole and is used for accommodating the connecting column, and when the pulling force of the control line is greater than the deformation limit of the tail hole, the connecting column slides out of the tail hole.

Optionally, the side arm and the middle arm are further provided with a clamping tooth to enhance the tissue clamping capability of the side arm and the middle arm.

Optionally, the handle comprises a handle body and at least two sliding pieces which are independent of each other and are slidably connected to the handle body; the handle body is of a hollow structure, and each sliding part is connected with one side clamping arm in the handle body through one control wire.

Optionally, a rotating part with a polygonal structure is arranged at the proximal end of the catheter, and a rotating part with a polygonal inner hole is arranged on the rotating part, so that the rotating part is slidably connected with the rotating part; and an anti-skid rubber ring is also arranged on the inner wall of the rotating part.

According to the above technical solution, the present application provides a sliding-slot type multi-arm clip, including: handle, pipe, clamping part, spring pipe and control wire. In practical application, an operator applies axial pushing force and pulling force on the handle to drive the control line to move so as to realize the opening, closing and locking of the clamping part. In addition, the side clamping arms and the clamping seats in the clamping parts can be very easily separated from the catheter or the spring tube to retain the human body, so that the functions of hemostasis and tissue suture are achieved. The application provides a slotted dobby presss from both sides can reach to be detained in human interior instrument length shortest through the cooperation of side arm lock with the holder. And the motion sliding chute structure on the side clamping arm can realize accurate and repeatable opening and closing, simplifies the operation and improves the success rate.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of a slotted dobby clip of the present application;

FIG. 2 is a schematic perspective view of a slotted dobby clip of the present application;

FIG. 3 is a schematic structural view of a side clamp arm according to the present application;

FIG. 4 is a schematic view of a cartridge of the present application;

FIG. 5 is a schematic diagram of a control line according to the present application;

FIG. 6 is a schematic view of another control line of the present application;

FIG. 7 is a schematic view of the structure of a separation claw according to the present application;

FIG. 8 is a schematic structural view of the present application showing the open state of the clamping portion;

FIG. 9 is a schematic structural view of the present application showing the connecting column of the clip closed in an unseparated state;

FIG. 10 is a schematic view of the present application showing the clip portion closed connecting post in a disengaged state;

FIG. 11 is a schematic view of the present application showing the closed separation claw of the clamping portion in a separated state;

FIG. 12 is a schematic view of the present application showing the clamping portions in a fully separated state;

fig. 13 is a schematic view of a rotating portion according to the present application.

Detailed Description

Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following examples do not represent all embodiments consistent with the present application. But merely as exemplifications of systems and methods consistent with certain aspects of the application, as recited in the claims.

In the technical solution provided by the present application, for convenience of description, the end of the whole device that is placed in the human body is called the distal end, and this end is mainly used for performing surgical actions on tissues; the end located outside the body is called the proximal end, and this end is mainly used for the operation of the operator. Unless otherwise stated, the term distal end of each member refers to the end near the inside of the body, and the term proximal end of each member refers to the end near the outside of the body.

Referring to fig. 1, a structural schematic view of a slotted dobby clip of the present application is shown. As can be seen from fig. 1 and 2, the present application provides a slotted dobby clamp, which includes: handle 1, pipe 2, clamping part 3, control line 4 and spring tube 5. The handle 1 is used for performing surgical operation and is a direct control component of a surgical operator.

In the technical scheme provided by the application, because the operation operator needs to apply axial pushing force and pulling force on the handle 1, the control wire 4 can be driven to move so as to realize the opening, closing and locking of the clamping part 3, and therefore the handle 1 can further comprise a handle body 11 and at least two sliding parts 12 which are independent from each other and are connected to the handle body 11 in a sliding manner. The handle body 11 is a hollow structure, and each sliding piece 12 is connected with one side clamping arm 31 in the handle body 11 through one control wire 4.

Wherein the sliding member 12 can be two rings disposed on the handle 11, and in practical applications, the two rings on the sliding member 12 can be used for inserting two fingers, such as the index finger and the middle finger, respectively. The handle 11 may also be provided with a ring at the end for insertion of a thumb to move the slider 12 by the force of finger pinching.

The proximal end of the catheter 2 is connected with the handle 1, and the catheter 2 can be in a soft round tube structure, such as a plastic hose, in order to adapt to the digestive tract structure of a human body and the shape of an endoscope channel. And the inside of the catheter is provided with a spirally extending supporting spring, so that the catheter 2 can still keep a tubular state when being extruded by the side wall tissue of the digestive tract, and the action of internal devices is prevented from being influenced. The length of the catheter 2 in this application should be such that it is possible to perform a surgical operation outside the body.

The grip portion 3 is detachably attached to the distal end of the catheter 2. The gripping part 3 is controlled by the action of the operator to open and close. Therefore, in the technical solution provided by the present application, as shown in fig. 3, the clamping portion 3 includes at least two side clamping arms 31, at least one middle clamping arm 32, and a clamping seat 33; a moving chute 34 is arranged on the side clamping arm 31, a pin shaft 35 is arranged on the clamping seat 33, and the pin shaft 35 can slide in the moving chute 34 to control the opening and closing of the side clamping arm 31; the far end of the motion sliding chute 34 is provided with a projection 36 so as to limit the pin shaft 35 at the far end of the motion sliding chute 34 and lock the side clamping arm 31; as shown in fig. 4, the middle clipping arm 32 is fixedly connected to the clipping seat 33.

The moving chute 34 can be in the form of L, obtuse angle, circular arc, etc. for closing the clamping arms. In practical applications, a three-arm clamp is taken as an example, and may include two side clamp arms 31 and a middle clamp arm 32, where the side clamp arms 31 may generate a clamping action relative to the middle clamp arm 32 under the action of the pin and the motion chute 34 to clamp the tissue. Further, as shown in fig. 3, 4 and 8, the side arm 31 and the middle arm 32 are further provided with a clamping tooth to enhance the tissue clamping capability of the side arm 31 and the middle arm 32.

A control wire 4 disposed inside the catheter 2 to connect the grip 3 and the handle 1. The number of the control wires 4 is the same as that of the side arms 31, and each control wire 4 is connected to the side arm 31 to independently control the opening and closing of the side arm 31.

In the sliding groove type multi-arm practical application provided by the application, because of the existence of a plurality of clamping arms, the large wound surface can be respectively and relatively opened and closed, so that the tissue traction of the large wound surface is realized, namely, one side clamping arm 31 and one middle clamping arm 32 are respectively opened and clamped to one side tissue, the large wound surface is driven by an endoscope to move to the other side of the wound surface and be opened again, so that the other side clamping arm 31 and the middle clamping arm 32 are closed and clamped to be tissues, and the wound surface opening size can be successfully sutured when being far larger than the maximum opening size of the clamp.

In the technical solution provided in this application, as shown in fig. 8, when an operator wants to close one side clamping arm 31, the corresponding sliding part 12 on the handle 1 can be pulled, so that the sliding part 12 drives the control wire 4, and the side clamping arm 31 on the side is pulled to move backward, so that the pin 35 moves from the proximal end to the distal end of the moving chute 34. At this time, due to the action between the edge of the L-shaped or other-shaped moving chute 34 and the pin 35, the side arm 31 approaches the middle arm 32, so as to clamp the tissue.

If the operator continues to pull on slider 12, pin 35 will move further toward the distal end of the motion runner 34 and pin 35 will contact projection 36. Since the projection 36 has a deforming ability, the projection 36 is deformed when pressed by the pin 35 so that the pin 35 passes over the projection 36 to the farthest end of the moving chute 34. At this time, the side arm 31 and the middle arm 32 are always kept in a closed state and are limited by the protrusion 36, so that the pin 35 is not easy to move in the opposite direction at the distal end of the moving chute 34, and the locking effect is achieved.

Further, as shown in fig. 3, the protruding portion 36 includes a buffer chamber 361 and a limit projection 362; the limit protrusion 362 protrudes from the side wall of the moving chute 34; the buffer cavity 361 is a through hole disposed on the side clamping arm 31 and near the distal end of the moving chute 34, so that the limiting protrusion 362 forms a cantilever structure. In this embodiment, the protruding portion 36 is integrally formed as a cantilever beam structure, which can provide a retraction space for the limiting protrusion 362 through the structure of the buffer chamber 361, so as to facilitate deformation.

In addition, in practical applications, since the suspension beam structure can support the two ends of the limiting protrusion 362, the connection stability of the whole protruding portion 36 is high. In practical application, if a material that is easily deformed is used for the corresponding protruding portion 36, the overall locking capability is limited to a certain extent, and along with the extension of the clamping time, the protruding portion 36 is easily deformed inelastically, that is, the design structure of the protruding portion 36 is changed, and it is difficult to maintain the originally designed locking effect.

And if the material which is not easy to deform is adopted, the pulling force required in the operation process is large, and inconvenience is brought to an operator. Therefore, the present embodiment can obtain an easier degree of deformation with the same material by the projection 36 of the cantilever structure; moreover, due to the support on the two sides of the suspension beam structure, the possibility of non-elastic deformation can be reduced, and the stability of the convex part 36 can be improved.

In order to achieve a detachable connection between the catheter 2 and the grip 3, in some embodiments of the present application, the slotted dobby further comprises a spring tube 5 connecting the catheter 2, the spring tube 5 being a cylindrical sheath surrounding the control wire 4; the spring tube 5 is detachably connected to the holder 33. In practice, the spring tube 5 may be constructed in the same manner as the guide tube 2 in order to simplify the construction.

Specifically, in one embodiment, the proximal end of the holder 33 is a circular tubular structure, and a plurality of circular arc-shaped protrusions are uniformly arranged on the side wall of the circular tubular structure; the spring tube 5 is provided with a round hole matched with the arc-shaped bulge so as to realize detachable connection with the clamping seat 33. In the embodiment, a plurality of protrusions are arranged at the circular pipe part of the clamp seat 33, and are all kept in the circular hole of the spring pipe 5 in the process of closing the clamp arm so as to be pulled by the control line 4 to move. When the pin shaft 35 reaches the farthest end of the moving chute 34, the protrusion on the clamping seat 33 slides out from the circular hole by increasing the pulling force on the sliding part 12, so as to realize separation.

In another embodiment of the present application, as shown in fig. 7, the clamping portion 3 further comprises a separation claw 37 connected to the holder 33; the separation claw 37 includes a drawing portion 371 to which the control wire 4 is connected, and a plurality of deformable connecting arms 372 provided on the drawing portion 371. The spring tube 5 or the holder 33 is provided with a plurality of holes for fixing the connecting arm 372 and separating the connecting arm 372 from the spring tube 5 or the holder 33 when the tension of the control line 4 is increased to the deformation limit of the connecting arm 372.

Further, as shown in fig. 5, a connection pipe 42 is provided on the control wire 4, and the control wire 4 penetrates through the connection pipe 42; the connection tube 42 contacts the drawing part 371 to draw the separation claw 37. In this embodiment, the separation claw 37 has a plurality of connection arms 372 in the circumferential direction, the connection arms 372 can be combined with the hole portions on the holder 33 and the spring tube 5, any portion of the traction portion 371 is connected with the control line 4 at the same time, and the connection arms 372 deform under the tension of the control line 4 so as to separate from the holder 33 and the spring tube 5, thereby achieving the effective separation of the holder and the spring tube.

In some embodiments of the present application, as shown in fig. 3 and 9, a connection column 41 is disposed at a distal end of the control wire 4, a tail hole 312 is disposed at a proximal end of the side arm lock 31, and the tail hole 312 is a semi-open circular hole or an oblong hole and is used for accommodating the connection column 41 and enabling the connection column 41 to slide out of the tail hole 312 when a pulling force of the control wire 4 is greater than a deformation limit of the tail hole 312. In practical applications, the tail hole 312 is connected to the connecting column 41 of the control wire 4 to drive the whole clamping portion 3 to reciprocate through the connecting column 41.

Accordingly, as shown in fig. 5, in order to better transmit torque through the control wire 4, the attachment post 41 is compliant to facilitate passage through the endoscope channel. The control wire 4 may be composed of a monofilament or a single sheet or a plurality of strands. The distal end of the control cord 4 is provided with a fixed attachment post 41. Furthermore, the control wire 4 can be provided with a connecting pipe 42, the connecting pipe 42 can separate the control wire 4, and the section of the displacement proximal end can be composed of single wire or single sheet or multi-stranded wire, and has higher rigidity to transmit axial force and rotation torque.

The connecting tube 42 may be separate from the proximal section of the control wire 4 or may be integrally formed therewith. In this embodiment, the connecting column 41 may be a cylindrical structure disposed at a side portion of the control wire 4, and in order to facilitate torque transmission, the connecting column 41 is not limited to the cylindrical structure, but may also be a t-shaped or Z-shaped structure, as shown in fig. 6, so as to improve the stability of connection between the control wire 4 and the side clamp arm 31.

As shown in fig. 3, 4 and 9, a step is provided in the middle of the clamping seat 33; the proximal end of the side arm 31 is provided with a tail hook 311, and the side arm 31 is locked by the matching of the tail hook 311 and the step. In practical applications, when the two side clamping arms 31 are in the closed state but not locked, the protrusion 36 can limit the advance of the pin 35 to achieve the closed state but not locked state.

The proximal end of the side arm 31 is provided with a tail hook 311 which contacts with a middle restraining step of the holder 33 to increase the movement resistance to the pin 35 and also achieve a closed but unlocked state of the arm. At this time, if the medical staff confirms that the clamping operation is incorrect, the sliding member 12 on the handle 1 can be driven to move forward when the clamping arm needs to be reopened, so as to drive the control line 4 to drive the side clamping arm 31 to move forward, and the cam principle is utilized, so that the side clamping arm 31 is reopened along the shape trend of the moving chute 34 under the condition that the side clamping arm is fixed relative to the pin 35.

When the medical staff determines that the tissue is not clamped correctly, the medical staff pulls the sliding part 12 of the handle 1 backwards to drive the control wire 4 backwards and further drive the side clamping arms 31 to move backwards, and when the applied force is larger than the force of the protrusion 36 limiting the pin 35, the pin 35 goes beyond the protrusion 36 and enters the farthest end of the moving chute 34. At this time, as shown in fig. 10, the tail hook 311 at the proximal end of the side arm 31 deforms and enters the middle restraining step of the holder 33. Under the action of the control wire 4, the tail hook 311 rotates or deforms laterally and hangs on the middle step of the clamping seat 33 to achieve the axial locking, and at the moment, the tail hook cannot be opened repeatedly.

Finally, as shown in fig. 11, when the two side arms 31 are in the closed state, the control wire 4 moves backward, and the separation claw 37 is pulled off by the connection tube 42 on the control wire 4. The control wire 4 continues to move backwards under the operation of the medical staff, and the control wire 4 is pulled into the spring tube 5, so that the spring tube 5 is completely separated from the holder 33, and the operation is completed, as shown in fig. 12.

Further, as shown in fig. 13, the proximal end of the catheter 2 is provided with a rotating part 21 having a polygonal structure, and the rotating part 21 is provided with a rotating part 22 having a polygonal inner hole, so that the rotating part 22 is slidably connected to the rotating part 21; the inner wall of the rotating part 22 is also provided with an anti-skid rubber ring. In clinical use, the catheter 2 or the spring tube 5 has a small diameter, generally less than 2.8mm, so that the hand feeling is poor during operation, and the catheter or the spring tube is not easy to hold for rotating operation. Thus, in this embodiment, the catheter 2 that does not enter the endoscope is an external pentagon. The tube 2 or spring tube 5 that has entered the endoscope is rounded in its outer shape in order to reduce rotational frictional resistance, so that torque can be transmitted outside the endoscope by rotating the pentagon.

In order to obtain better operation experience, in the embodiment, a rotating element 22 is additionally arranged on the pentagonal rotating part 21, an inner hole of the rotating element 22 is also pentagonal, can be limited and cannot rotate during rotation, but can slide at any position on the catheter 2, so that a doctor can adjust the rotating position suitable for the doctor according to needs, and in order to enable the rotating element 22 not to slide on the catheter 2 too loosely, a rubber ring can be additionally arranged on the inner hole of the rotating element 22 to increase certain resistance, for example, less than 2N, namely, the rotating element can slide on the catheter 2 to adjust the suitable position and can also rotate at any position.

According to the above technical solution, the present application provides a sliding-slot type multi-arm clip, including: handle 1, pipe 2, clamping part 3, spring tube 5 and control wire 4. In practical application, an operator applies axial pushing force and pulling force on the handle 1 to drive the control wire 4 to move so as to realize the opening, closing and locking of the clamping part 3. In addition, the side clip arms 31 and the clip holders 33 in the clip part 3 can be very easily separated from the catheter 2 or the spring tube 5 to retain the human body, thereby achieving the functions of hemostasis and tissue suture. The sliding groove type multi-arm clamp provided by the application can achieve the shortest length of instruments retained in a human body through the matching of the side clamps, 31 and the clamp seat 33. And the structure of the moving chute 34 on the side clamping arm 31 can realize accurate and repeatable opening and closing, simplify the operation and improve the success rate.

The embodiments provided in the present application are only a few examples of the general concept of the present application, and do not limit the scope of the present application. Any other embodiments extended according to the scheme of the present application without inventive efforts will be within the scope of protection of the present application for a person skilled in the art.

Claims (10)

1. A slotted dobby clip, comprising:

a handle (1);

a catheter (2), the proximal end of the catheter (2) is connected with the handle (1);

a grip portion (3) detachably attached to a distal end of the catheter (2);

a control wire (4) arranged inside the catheter (2) to connect the grip (3) and the handle (1);

wherein the clamping part (3) comprises at least two side clamping arms (31), at least one middle clamping arm (32) and a clamping seat (33); a moving chute (34) is arranged on the side clamping arm (31), a pin shaft (35) is arranged on the clamping seat (33), and the pin shaft (35) can slide in the moving chute (34) to control the side clamping arm (31) to open and close; the far end of the motion sliding chute (34) is provided with a protruding part (36) so as to limit the pin shaft (35) at the far end of the motion sliding chute (34) and lock the side clamping arm (31); the middle clamping arm (32) is fixedly connected with the clamping seat (33);

the number of the control lines (4) is the same as that of the side clamping arms (31), and each control line (4) is connected with the side clamping arm (31) respectively to independently control the opening and closing of the side clamping arm (31).

2. The slotted dobby clamp of claim 1, wherein said projections (36) comprise a buffer cavity (361) and a limit projection (362); the limiting protrusion (362) protrudes out of the side wall of the moving chute (34); the buffer cavity (361) is arranged on the side clamping arm (31) and is close to a through hole at the far end of the moving chute (34), so that the limiting protrusion (362) forms a cantilever beam structure.

3. The slotted dobby clamp according to claim 1, characterized in that it further comprises a spring tube (5) connecting said catheter (2), said spring tube (5) being a cylindrical sheath surrounding said control wire (4); the spring tube (5) is detachably connected with the clamping seat (33).

4. The slotted dobby clamp according to claim 3, characterized in that the proximal end of the clamp holder (33) is a circular tubular structure, on the side wall of which a plurality of circular arc-shaped protrusions are uniformly arranged; the spring tube (5) is provided with a round hole matched with the arc-shaped bulge so as to realize detachable connection with the clamping seat (33).

5. A slotted dobby clamp according to claim 3, characterized in that the clamping portion (3) further comprises a disengaging pawl (37) connecting the clamping shoes (33); the separation claw (37) comprises a traction part (371) connected with the control wire (4), and a plurality of deformable connecting arms (372) arranged on the traction part (371);

spring pipe (5) or be equipped with a plurality of holes on holder (33), be used for fixing linking arm (372) and when control line (4) pulling force increased the deformation limit of linking arm (372), make linking arm (372) with spring pipe (5) or holder (33) separation.

6. A slotted dobby clamp according to claim 5, characterized in that a connection tube (42) is provided on said control wire (4), said control wire (4) extending through said connection tube (42); the connection tube (42) contacts the drawing part (371) to draw the separation claw (37).

7. A slotted dobby clamp according to claim 1, characterized in that the middle of the clamp seat (33) is provided with a step; the near end of side arm (31) is equipped with the tail and colludes (311), through the tail collude (311) with the cooperation locking of step side arm (31).

8. The slotted dobby clamp according to claim 1, wherein the distal end of the control wire (4) is provided with an attachment post (41), the proximal end of the side clamp arm (31) is provided with a tail hole (312), the tail hole (312) is a semi-open circular hole or oblong hole for accommodating the attachment post (41), and the attachment post (41) is slid out of the tail hole (312) when the pulling force of the control wire (4) is greater than the deformation limit of the tail hole (312).

9. The slotted dobby clamp of claim 1, wherein said side arms (31) and middle arms (32) are further provided with clamping teeth to enhance the tissue gripping ability of the side arms (31) and middle arms (32).

10. The slotted dobby clamp according to claim 1, wherein the proximal end of the guide tube (2) is provided with a rotating portion (21) having a polygonal configuration, and the rotating portion (21) is provided with a rotating member (22) having a polygonal inner bore, such that the rotating member (22) is slidably connected to the rotating portion (21); the inner wall of the rotating part (22) is also provided with an anti-skid rubber ring.

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