Anastomotic clip and anastomotic kit containing the same

Abstract

The present invention discloses an anastomotic clip and an anastomotic set including the anastomotic clip. The anastomotic clip includes a carrier transparent cap, a pushing rod and a fixing clip. The carrier transparent cap is sleeved on the front end of an endoscope. The front end of the carrier transparent cap is provided with a fixing clip accommodating chamber, and the rear end is provided with a pushing chamber. The pushing chamber is communicated with the fixing clip accommodating chamber. The fixing clip is arranged in the fixing clip accommodating chamber. One end of the pushing rod extends into the pushing chamber. The pushing chamber is located outside the endoscope. When the pushing rod is pushed forward, the fixing clip extends out of the fixing clip accommodating chamber, and the front end of the fixing clip is tightened toward the central axis. The anastomotic set includes a pulling clamp and the anastomotic clip described above. The pulling clamp pulls the diseased tissue so that the diseased tissue approaches the carrier transparent cap or enters the carrier transparent cap. The present invention has a simple structure. After entering the human body, it is not affected by the peristaltic action of the human tissue, and will not cause structural deformation and entanglement, thereby improving the success rate of the operation.

Description

Technical Field

[0001] The present invention relates to the field of medical technology, and in particular to an anastomotic clip and an anastomotic kit comprising the anastomotic clip. Background Art

[0002] The OTSC anastomotic clip system is an OTSC anastomotic clip made of a superelastic shape memory alloy and used in conjunction with a soft endoscope. It is used for compression and closure of digestive tract tissues and can also be used to mark wounds. The OTSC anastomotic clip system is widely used in the medical field due to its advantages such as good elasticity, strong tightening force, large tissue grabbing, and large range. However, the OTSC anastomotic clip system in the prior art has the following disadvantages:

[0003] (1) The structure is complex and inconvenient to use. The traction rope needs to be passed through the OTSC handwheel and tied before the OTSC handwheel can be operated to clamp the tissue.

[0004] (2) The surgeon has high requirements for operating skills. If the grasping forceps do not grasp the appropriate lesion tissue or the lesion tissue is too large or there is shaking during the operation, the OTSC anastomosis clip will fail to release (failure to effectively clamp the tissue) and the surgeon will not be able to control the operation process. Summary of the invention

[0005] In order to solve the technical problems that the OTSC anastomosis clip system in the prior art uses a traction rope to connect the OTSC handwheel and the anastomosis clip, and the anastomosis clip is released by the traction action of the traction rope, which is inconvenient to use and prone to winding failure, the present invention provides an anastomosis clip and an anastomosis kit including the anastomosis clip to solve the above problems.

[0006] The present invention proposes an anastomosis clip, comprising a carrier transparent cap, which is axially penetrated and sleeved on the front end of an endoscope, wherein a fixing clip accommodating cavity is provided at the front end of the carrier transparent cap and a pushing cavity is provided at the rear end; the pushing cavity is communicated with the fixing clip accommodating cavity; a fixing clip, which is arranged in the fixing clip accommodating cavity; a pushing rod, one end of which extends into the pushing cavity; the pushing cavity is located outside the endoscope, and when the pushing rod is pushed forward, the fixing clip extends from the fixing clip accommodating cavity, and the front end of the fixing clip is tightened toward the center axis direction.

[0007] Furthermore, the fixing clip includes a fixing clip sleeve and fixing clip thorns which are axially connected, the fixing clip thorns have at least one sharp thorn end, and the fixing clip thorns are made of shape memory material. When the fixing clip is extended from the accommodating cavity, the fixing clip thorns return to a molded state.

[0008] Furthermore, the fixing clip accommodating cavity is a groove extending radially outward from the inner side wall of the carrier transparent cap, and the front end of the fixing clip is supported by the front end of the endoscope and extends forward.

[0009] Preferably, the pushing cavity penetrates the rear end side wall of the carrier transparent cap along the axial direction of the carrier transparent cap.

[0010] Preferably, a pushing handle is provided at the rear end of the pushing rod.

[0011] The present invention also provides an anastomosis kit, comprising a traction clamp and the anastomosis clamp described above, wherein the traction clamp passes through the carrier transparent cap from the clamp channel hole of the endoscope and pulls the diseased tissue to make the diseased tissue approach the carrier transparent cap or enter the carrier transparent cap.

[0012] Furthermore, the pulling clamp includes a storage tube, a boot tube, a cable liner and a hook clamp, the hook clamp includes two or more hook parts, the rear end of each hook part is connected to the front end of the cable liner, the storage tube and the boot tube are coaxially connected and are sleeved on the circumferential outer side of the cable liner, the hook clamp can be retracted into the storage tube, and when the hook clamp extends out of the storage tube, the front end of each hook part expands radially outward.

[0013] Furthermore, the anastomosis kit also includes a positioning screw, the front end of which is provided with a threaded cone head, the center of the cable liner is provided with an axial through cavity, the positioning screw is arranged in the axial through cavity, and can perform axial reciprocating motion relative to the cable liner.

[0014] Preferably, the positioning screw is threadably connected or slidably connected to the cable liner.

[0015] Preferably, the storage tube and the boot tube are made in one piece.

[0016] The beneficial effects of the present invention are:

[0017] (1) The anastomotic clip of the present invention uses a rigid pushing rod to push the fixing clip out, and the connection structure is simple. The pushing rod is arranged outside the endoscope and does not need to occupy the internal space of the endoscope. After entering the human body, the pushing rod is not affected by the peristaltic action of the human tissue, and will not cause structural deformation and entanglement, thereby improving the success rate of the operation.

[0018] (2) The fixing thorns in the present invention are made of shape memory material, which has good elasticity and strong tightening force.

[0019] (3) The anastomosis kit described in the utility model is composed of an anastomosis clamp and a traction clamp. The traction clamp is passed through the clamp channel hole of the endoscope. The traction clamp can first pull the diseased tissue to the front end of the endoscope. When the anastomosis clamp is released from the front end of the endoscope, the anastomosis clamp can accurately clamp the diseased tissue to avoid the occurrence of ineffective tissue clamping.

[0020] (4) In the anastomosis kit described in the present invention, a positioning screw is provided on the traction clamp. When grasping a tissue with a larger opening, the threaded cone head of the positioning screw can twist the opening edge of the diseased tissue, thereby reducing the opening of the diseased tissue, which is conducive to the hook clamp to hook the diseased tissue smoothly, improves the grasping accuracy, and reduces the operator's operating level requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 is a schematic diagram of the state of the anastomotic clip of the present invention when it is in an unloaded state;

[0023] Figure 2 is a schematic diagram of the state of the anastomotic clip of the present invention when it is in a loaded state;

[0024] Figure 3 yes Figure 1 The enlarged image at a in the middle;

[0025] Figure 4 yes Figure 1 Bottom view of

[0026] Figure 5 yes Figure 1 AA section view;

[0027] Figure 6 yes Figure 1 The schematic diagram of the state of the fixing clip when the anastomotic clip is in the unloaded state is shown;

[0028] Figure 7 yes Figure 1 A schematic diagram of the state of the fixing clip when the anastomotic clip is in a loaded state;

[0029] Figure 8 is a schematic diagram of a state in which the pulling clamp in the anastomosis kit of the present invention is in an open state;

[0030] Fig. 9 yes Figure 8 The enlarged view of point b in the figure;

[0031] Fig.10 is a schematic diagram of a state in which the pulling clamp in the anastomosis kit of the present invention is in a closed state;

[0032] Fig.11 yes Fig.10 The enlarged view of point c in the figure;

[0033] Fig.12 is a schematic diagram of the appearance of a specific embodiment of the pulling clip in the anastomosis kit of the present invention;

[0034] Fig.13 yes Fig.12 Schematic diagram of the structure of the pulling clamp shown (the internal structure is visible).

[0035] Fig.14 is a schematic diagram of the state when the anastomotic set of the present invention is located directly above the perforated part;

[0036] Fig.15 is a schematic diagram of the state when the pulling clamp is ready to grab tissue;

[0037] Fig.16 is a schematic diagram of the state of the pulling clamp when it is closed after grabbing the tissue;

[0038] Fig.17 It is a schematic diagram of the state when the diseased tissue is pulled upward;

[0039] Fig.18 is a schematic diagram of the state of the anastomotic clip clamping the diseased tissue;

[0040] Fig.19 It is a schematic diagram of the state after the pulling clamp is released.

[0041] In the figure, 1. carrier transparent cap, 101. fixing clip accommodating cavity, 1011. opening, 102. pushing cavity, 2. fixing clip, 201. fixing clip sleeve, 202. fixing clip thorn, 3. pushing rod, 4. perforation, 5. pushing handle, 6. pulling clip, 601. storage tube, 602. boot tube, 603. cable liner, 604. hook clip, 6041. hook part, 605. positioning screw, 6051. threaded cone head, 7. diseased tissue, 8. endoscope. DETAILED DESCRIPTION

[0042] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0043] The “front end” mentioned in the present invention refers to the end close to the diseased tissue 7 during surgery, and the “rear end” refers to the end away from the diseased tissue 7 during surgery.

[0044] Embodiment 1, as Figure 1-Figure 7As shown, an anastomosis clip is provided, comprising a carrier transparent cap 1, a fixing clip 2 and a pushing rod 3. The carrier transparent cap 1 is axially penetrated and sleeved on the front end of an endoscope 8. The front end of the carrier transparent cap 1 is provided with a fixing clip accommodating cavity 101 and the rear end is provided with a pushing cavity 102; the pushing cavity 102 is communicated with the fixing clip accommodating cavity 101; the fixing clip 2 is arranged in the fixing clip accommodating cavity 101; one end of the pushing rod 3 extends into the pushing cavity 102; the pushing cavity 102 is located outside the endoscope 8, when the pushing rod 3 is pushed forward (i.e., the pushing rod 3 is pushed toward the front end of the endoscope 8), the fixing clip 2 extends from the fixing clip accommodating cavity 101, and the front end of the fixing clip 2 is tightened and moved closer to the longitudinal central axis direction of the fixing clip 2, and at this time, the fixing clip 2 clamps the diseased tissue 7.

[0045] The carrier transparent cap 1 has a tubular structure and is made of transparent material. The fixing clip accommodating chamber 101 is used to accommodate the fixing clip 2. The fixing clip 2 can extend out of the fixing clip accommodating chamber 101 when it moves forward. The rear end of the fixing clip accommodating chamber 101 is connected to the pushing chamber 102 through a smaller opening 1011. On the one hand, the smaller opening 1011 is used to enable the pushing rod 3 to enter the fixing clip accommodating chamber 101 to push out the fixing clip 2. On the other hand, the smaller opening 1011 can limit the backward movement of the fixing clip 2.

[0046] The pushing rod 3 is made of a rigid material and can be independently arranged on the outside of the endoscope 8. In the prior art, nylon coils or traction ropes are mostly used to be threaded inside the endoscope 8 and then connected to the fixing clamp 2. The nylon coils or traction ropes are flexible parts, and compared with the rigid pushing rod 3, the fulcrum is poor, and the fixing clamp 2 can only be pushed out by pulling. In addition, due to the peristalsis of the gastrointestinal tissue, the endoscope 8 will be deformed in the tissue, which will cause the threading structure of the nylon coil or traction rope inside the endoscope 8 to change. Once entanglement and knotting occur, the fixing clamp 2 will not be able to be pushed out normally.

[0047] The fixing clip 2 may adopt but is not limited to the following structures: Figure 6 and Figure 7As shown, it includes an axially connected fixed jacket 201 and a fixed clip thorn 202, the fixed clip thorn 202 has at least one spike end, and the fixed clip thorn 202 is made of shape memory material. When the fixed clip 2 extends from the accommodating cavity, the fixed clip thorn 202 returns to the formed state. The shape memory material is usually made of nickel-titanium memory alloy, which has the characteristics of good elasticity, strong tightening force, can clamp the entire layer of the tube wall, and can grab more tissues. In the free state, the fixed clip thorn 202 is tightened in the direction of the central axis, that is, the spike end of the fixed clip thorn 202 points to the direction of the central axis, which is the formed state of the fixed clip thorn 202. When the fixed jacket 201 is on the endoscope 8, the fixed clip thorn 202 is supported by the endoscope 8 and is tubular, that is, the spike end of the fixed clip thorn 202 points to the axial front end. When the fixed clip 2 is clamped on the diseased tissue 7, the fixed jacket 201 covers the diseased tissue 7, and the fixed clip thorn 202 clamps and sutures the diseased tissue 7. The fixed clip thorns 202 can be four spike ends as shown in the figure, or three or other numbers, depending on the actual situation.

[0048] The fixing clip accommodating cavity 101 can be arranged inside the front end side wall of the carrier transparent cap 1, or it can be a groove extending radially outward from the inner side wall of the carrier transparent cap 1. When the fixing clip accommodating cavity 101 is arranged in the former way, the fixing clip accommodating cavity 101 is located in the middle layer of the side wall. When the fixing clip 2 is installed in the fixing clip accommodating cavity 101, the fixing clip 2 can be tubular, which is the same as the state of the anastomosis clip after the endoscope 8 is installed. Therefore, the state of the anastomosis clip remains unchanged before and after the endoscope 8 is installed, which may cause the endoscope 8 to be not installed in place. For this reason, the fixing clip accommodating cavity 101 of the present application adopts the second setting method. Since the inner side of the fixing clip accommodating cavity 101 does not have a wall structure, when the endoscope 8 is not installed, that is, in the unloading state, the fixing clip 2 is in a tightened state (such as Figure 7 As shown in the figure, when the endoscope 8 is installed, that is, in the loading state, the front end of the fixing clip 2 (i.e., the fixing clip thorn 202) is supported by the front end of the endoscope 8 and extends forward. The state of the fixing clip 2 can accurately determine whether the endoscope 8 is installed in place. That is to say, when the fixing clip thorn 202 is completely pointing to the front end, it means that the endoscope 8 is installed in place. At this time, there will be a sense of stuck, and the operator can also judge whether it is installed in place by feeling. Figure 3 and Figure 5 As shown, in this embodiment, the front end side wall of the carrier transparent cap 1 is divided into two layers, and the opening 1011 is located near the inner side wall.

[0049] In this embodiment, the push cavity 102 penetrates the rear end side wall of the carrier transparent cap 1 along the axial direction of the carrier transparent cap 1, that is, the inner and outer sides of the push cavity 102 are supported by the wall surface. After the push rod 3 is installed, there is no contact between the push rod 3 and the endoscope 8, and the deformation of the endoscope 8 inside the digestive tract reduces the influence of the push rod 3. The push rod 3 is movably installed in the push cavity 102, that is, the push rod 3 can be plugged in and out at any time. When it is necessary to push the fixed clip 2, the push rod 3 is inserted into the push cavity 102 to push the fixed clip 2 forward. After the fixed clip 2 is pushed out, the push rod 3 is taken out to reduce the space occupied by the anastomotic clip installed in the digestive tract.

[0050] Preferably, a pushing handle 5 is provided at the rear end of the pushing rod 3, and the pushing handle 5 is fixedly connected to the pushing rod 3, such as by welding, riveting, gluing, integrally formed, etc., or detachably connected, such as by threaded connection.

[0051] Embodiment 2, an anastomosis kit, such as Figure 8-Figure 11 , Figure 14-Figure 19 As shown, it includes a pulling clamp 6 and the anastomotic clamp mentioned above. The pulling clamp 6 passes through the carrier transparent cap 1 from the clamp channel hole of the endoscope 8 and pulls the diseased tissue 7 so that the diseased tissue 7 approaches the carrier transparent cap 1 or enters the carrier transparent cap 1.

[0052] In Example 1, only the anastomotic clamp is used to clamp the diseased tissue 7, which is mainly suitable for tissue with good elasticity. At this time, the tissue can be sucked into the fixing clamp 2 by relying on negative pressure. When the degree of tissue lesions is large, the diseased tissue 7 will harden. At this time, it is difficult to suck the diseased tissue 7 into the fixing clamp 2 by relying solely on the negative pressure, or the thickness of the clamped diseased tissue 7 is small, resulting in incomplete suturing of the diseased tissue 7. In this embodiment, the pulling clamp 6 is used in conjunction with the anastomotic clamp. When in use, the pulling clamp 6 is first used to hook the diseased tissue 7, and at the same time, the diseased tissue 7 is pulled back to make the diseased tissue 7 approach the carrier transparent cap 1. At the same time, the diseased tissue 7 protrudes from a large area of ​​the tissue surface, so that the anastomotic clamp can grab more diseased tissue 7, which is convenient for releasing the clamped tissue.

[0053] The pulling clamp 6 is a prior art. The pulling clamp 6 can hook the edge of the diseased tissue 7 and pull the diseased tissue 7 toward the carrier transparent cap 1. During the pulling process, the diseased tissue 7 gradually closes. For example, the structure of the patent number CN201821459369.9, entitled "A large wound surface anastomosis clamp", or the structure of the patent number CN201721223893.1, entitled "Anastomosis clamp for endoscope", etc. can be adopted. In this embodiment, the pulling clamp 6 adopts the following structure: Figure 8-Figure 11As shown, the pulling clamp 6 includes a storage tube 601, a boot tube 602, a cable liner 603 and a hook clamp 604. The hook clamp 604 includes two or more hook portions 6041. The rear end of each hook portion 6041 is connected to the front end of the cable liner 603. The storage tube 601 and the boot tube 602 are coaxially connected and are sleeved on the circumferential outer side of the cable liner 603. The hook clamp 604 can be retracted into the storage tube 601. When the hook clamp 604 extends out of the storage tube 601, the front end of each hook portion 6041 expands radially outward.

[0054] The material of the storage tube 601 and the boot tube 602 is relatively hard, and they are used as external sleeves. The diameter of the storage tube 601 is larger than that of the boot tube 602. The boot tube 602 is adapted to the cable liner 603, and the storage tube 601 is adapted to the hook clip 604, that is, the boot tube 602 is sleeved outside the cable liner 603. When the traction clamp 6 is contracted, the hook clip 604 is in the storage tube 601. The hook clip 604 has a certain elasticity and can be opened and closed under the forward and backward push and pull of the cable liner 603. In the free state, the hook clip 604 is in a radial expansion state; under the restriction of the storage tube 601, the hook clip 604 contracts radially. The entire traction clamp 6 can enter the human body through the endoscope 8 clamp hole, find the target tissue, push the cable liner 603, and then the hook clip 604 can automatically open due to its own elasticity, and the hook clip 604 tissue.

[0055] Compared with the prior art, the pulling clamp 6 in this embodiment has a simple structure, is easy to pull out, and occupies little space.

[0056] Preferably, the storage tube 601 and the boot tube 602 are made in one piece.

[0057] Figure 14-Figure 19 The schematic diagram of the operation steps of suturing and perforating 4 is shown, which mainly includes the following steps:

[0058] Step 1: Use the traction clamp 6 to hook the diseased tissue 7. Figure 14-17 As shown, first move the anastomosis set to just above the perforation 4, then pass the pulling clamp 6 through the clamp channel hole of the endoscope 8 and extend it out from the front end of the endoscope 8, push the cable liner 603 to open the hook clamp 604 and hook the diseased tissue 7 located at the perforation 4, then pull the cable liner 603 to pull the hook clamp 604 into the receiving tube 601, so that the hook clamp 604 is closed, and the perforation 4 is closed accordingly, then pull the pulling clamp 6 and move the endoscope 8 at the same time, so that the front end of the endoscope 8 is against the tissue surface, and the diseased tissue 7 is pulled into the anastomosis clamp.

[0059] Step 2: Use anastomotic clips to suture. Fig.18 As shown, the push rod 3 is pushed forward to separate the anastomotic clip from the carrier transparent cap 1 , and the fixed clamping thorns 202 are restored to the formed state to clamp the diseased tissue 7 .

[0060] Step 3: Withdraw the device. Fig.19 As shown, the cable liner 603 is pushed to open the closed hook clamp 604, release the tissue, and take out the pulling clamp 6, the pushing rod 3 and the endoscope 8 one by one.

[0061] Embodiment 3, an anastomosis kit, is particularly suitable for suturing a large-area perforation 4. In embodiment 2, when the pulling clamp 6 does not grasp the appropriate diseased tissue 7, the anastomosis clamp will fail to grasp the tissue. Especially when the perforation 4 is large, the diseased tissue 7 is more active due to the peristalsis of the stomach, which makes it difficult to grasp. Fig.12 and Fig.13 As shown, this embodiment further adds a positioning screw 605 on the basis of Embodiment 2, and the front end of the positioning screw 605 is provided with a threaded cone head 6051, and the center of the cable liner 603 is provided with an axial through cavity, that is, the cable liner 603 is a hollow structure, and the positioning screw 605 is arranged in the axial through cavity, and can make axial reciprocating motion relative to the cable liner 603. The relative motion between the positioning screw 605 and the cable liner 603 can be achieved by threaded connection or sliding connection. When threaded connection is used, the positioning screw 605 can rotate in the cable liner 603, and the two have forward and backward relative motion during the rotation process.

[0062] When in use, the threaded cone head 6051 of the positioning screw 605 is first inserted into the diseased tissue 7, and then the positioning screw 605 is rotated. Under the action of the spiral, the perforation 4 is tightened and becomes smaller, and the traction clamp 6 can be quickly and effectively grasped. This speeds up the operation, improves the success rate of the operation, and reduces the requirements on the operator's operating level.

[0063] The positioning screw 605 can be removed at any time. When the diseased tissue 7 is relatively small and it is less difficult to grasp the tissue, the positioning screw 605 can be removed.

[0064] In this specification, the schematic representation of the terms does not necessarily refer to the same embodiment. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in one or more embodiments.

[0065] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An anastomotic clip, characterized in that: include: A carrier transparent cap (1), the carrier transparent cap (1) being axially through-through, the carrier transparent cap (1) being sleeved on the front end of the endoscope (8), the front end of the carrier transparent cap (1) being provided with a fixing clip accommodating cavity (101), and the rear end of the carrier transparent cap (1) being provided with a pushing cavity (102); the pushing cavity (102) being in communication with the fixing clip accommodating cavity (101); A fixing clip (2), the fixing clip (2) being arranged in the fixing clip accommodating cavity (101); A push rod (3), one end of which extends into the push cavity (102); the push rod (3) is made of a rigid material; The pushing cavity (102) is located outside the endoscope (8), and when the pushing rod (3) is pushed forward, the fixing clip (2) extends from the fixing clip accommodating cavity (101), and the front end of the fixing clip (2) is tightened toward the central axis direction; The fixing clip accommodating cavity (101) is a groove extending radially outward from the inner side wall of the carrier transparent cap (1), and the front end of the fixing clip (2) is supported by the front end of the endoscope (8) and extends forward; The pushing cavity (102) penetrates the rear end side wall of the carrier transparent cap (1) along the axial direction of the carrier transparent cap (1).

2. The anastomotic clip according to claim 1, characterized in that: The fixing clip (2) comprises a fixing clip sleeve (201) and a fixing clip thorn (202) connected axially, the fixing clip thorn (202) having at least one sharp thorn end, the fixing clip thorn (202) being made of a shape memory material, and when the fixing clip (2) is extended from the fixing clip accommodating cavity, the fixing clip thorn (202) returns to a molded state.

3. The anastomotic clip according to claim 2, characterized in that: A pushing handle (5) is provided at the rear end of the pushing rod (3).

4. An anastomotic kit, characterized in that: It comprises a pulling clamp (6) and the anastomotic clamp according to any one of claims 1 to 3, wherein the pulling clamp (6) passes through the carrier transparent cap (1) from the clamp channel hole of the endoscope (8) and pulls the diseased tissue (7) so that the diseased tissue (7) approaches the carrier transparent cap (1) or enters the carrier transparent cap (1).

5. The anastomotic kit according to claim 4, characterized in that: The pulling clamp (6) includes a storage tube (601), a boot tube (602), a cable liner (603) and a hook clamp (604), wherein the hook clamp (604) includes two or more hook portions (6041), wherein the rear end of each hook portion (6041) is connected to the front end of the cable liner (603), the storage tube (601) and the boot tube (602) are coaxially connected and sleeved on the circumferential outer side of the cable liner (603), and the hook clamp (604) can be retracted into the storage tube (601), and when the hook clamp (604) extends out of the storage tube (601), the front end of each hook portion (6041) expands radially outward.

6. The anastomotic kit according to claim 5, characterized in that: The anastomosis kit also includes a positioning screw (605), the front end of which is provided with a threaded cone head (6051), the center of the cable liner (603) is provided with an axial through cavity, the positioning screw (605) is arranged in the axial through cavity, and can perform axial reciprocating motion relative to the cable liner (603).

7. The anastomotic kit according to claim 6, characterized in that: The positioning screw (605) is threadedly connected or slidably connected to the cable liner (603).

8. The anastomotic kit according to claim 7, characterized in that: The storage tube (601) and the boot tube (602) are made in one piece.

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