Anastomotic clip removal kit

Abstract

The present invention discloses an anastomotic clip removal kit, comprising a removal cap, a removal hook and an anastomotic clip, wherein the removal cap is suitable for being installed at the front end of an endoscope, the outer diameter of the removal cap is smaller than the inner diameter of the anastomotic clip, and the removal hook can pass through the removal cap and hook the anastomotic clip; when the removal hook is pulled out backward, the anastomotic clip can be sleeved on the outer periphery of the removal cap to reset the closed anastomotic clip. While the removal hook is used to pull out the anastomotic clip, the removal cap can prop open the anastomotic clip, so that the front end spikes of the anastomotic clip loosen the tissue, thereby avoiding damage to the tissue when removing the anastomotic clip, greatly reducing the operator's proficiency requirements, and multiple clamping operations can be performed until the best clamping position is found.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to an anastomotic clip removal kit. Background Art

[0002] Anastomotic clips are medical devices that replace traditional manual suturing. Due to the development of modern science and technology and the improvement of manufacturing technology, the anastomotic clips currently used in clinical practice are reliable in quality and easy to use. In particular, they have the advantages of fast suturing, simple operation, and few side effects and surgical complications. They have also made it possible to remove tumors that were previously inoperable, and are highly favored and praised by clinical surgeons at home and abroad.

[0003] Anastomotic clips play an important role in the field of modern medicine. For general anastomotic clips, the sharp spikes at the front end will pierce into the tissue, and the clamp is relatively firm and generally difficult to remove. This requires a high level of proficiency in the operation of the operator, and the perforated tissue needs to be clamped accurately at one time. Once the clamp is clamped in the wrong position, it will be difficult to remove and may even cause tissue damage. For this reason, it is necessary to design an anastomotic clip removal kit that can easily remove the anastomotic clip and avoid tissue damage. Summary of the invention

[0004] In order to solve the technical problem in the prior art that the anastomotic clip is difficult to be separated from the tissue after clamping it, and the operator's operation proficiency is required to be high, the present invention provides an anastomotic clip removal kit to solve the above problem.

[0005] The technical solution adopted by the present invention to solve its technical problem is: an anastomotic clip removal kit, comprising a removal cap, a removal hook and an anastomotic clip, wherein the removal cap is suitable for being installed on the front end of an endoscope, the front end of the removal cap is suitable for being accommodated in the anastomotic clip, and the removal hook can pass through the removal cap and hook the anastomotic clip; when the removal hook is pulled out backward, the removal hook drives the anastomotic clip to be sleeved on the outer periphery of the front end of the removal cap.

[0006] Furthermore, the anastomotic clip comprises an anastomotic clip body and a removal line. The front end of the anastomotic clip body can be closed, and the rear end of the anastomotic clip body is circumferentially provided with a plurality of line holes. The removal line passes through the line holes and is fixed to the anastomotic clip body.

[0007] Furthermore, there are multiple removal lines, each of which is connected to each other, and the connection points of the removal lines are located on the central axis of the anastomotic clip body.

[0008] Furthermore, the removal hook includes a handle and a hook portion located at the front end of the handle.

[0009] Furthermore, the removal hook also includes a slip ring and a cable, the slip ring is slidably connected to the handle, the handle has an axial hole passing through the front end of the handle, one end of the cable is connected to the slip ring, and the other end is connected to the hook.

[0010] Furthermore, the removal cap includes a removal cap body and a fixture fixed to the rear end of the removal cap body, the fixture is suitable for being installed on the front end of an endoscope, and the front end of the removal cap body has two or more notches.

[0011] Furthermore, the front end of the removal cap body is provided with an arc chamfer.

[0012] Preferably, the notch extends along the axial direction of the removal cap.

[0013] Preferably, the front end of the removal cap body located on both sides of each of the notches has chamfered surfaces.

[0014] Preferably, the notches and the wire holes are arranged in one-to-one correspondence.

[0015] The beneficial effects of the present invention are:

[0016] (1) The anastomotic clip removal kit of the present invention can use the removal hook to pull out the anastomotic clip while the removal cap can open the anastomotic clip so that the front end spikes of the anastomotic clip can loosen the tissue, thereby avoiding damage to the tissue when removing the anastomotic clip. The operator's operating proficiency requirements are greatly reduced, and multiple clamping operations can be performed until the optimal clamping position is found.

[0017] (2) The anastomotic clip removal kit of the present invention has a removal line connected to the rear end of the anastomotic clip, and each removal line is connected to each other. The removal hook hooks the removal line through the connection point of the removal line, so that the anastomotic clip moves with the removal hook.

[0018] (3) The anastomotic clip removal kit described in the present invention has a notch at the front end of the removal cap. When the anastomotic clip moves outward with the removal hook, the removal line can move along the notch to avoid bending of the removal line and reduce the removal resistance of the anastomotic clip. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 is a front view of the removal cap of the present invention;

[0021] Figure 2 yes Figure 1 AA section view;

[0022] Figure 3 is a top view of an anastomotic clip having two wire holes;

[0023] Figure 4 yes Figure 3 BB section view;

[0024] Figure 5is a top view of an anastomotic clip having four wire holes;

[0025] Figure 6 yes Figure 5 CC section view;

[0026] Figure 7 yes Figure 5 A schematic structural diagram of an anastomotic clip body in the anastomotic clip shown;

[0027] Figure 8 is a top view of an anastomotic clip having three wire holes;

[0028] Fig. 9 yes Figure 8 DD section view;

[0029] Fig.10 It is a schematic diagram of the structure of the removal hook described in the present invention;

[0030] Fig.11 It is a schematic diagram of the state of the present invention when it is in a state of being ready to be pulled out;

[0031] Fig.12 It is a schematic diagram of the state of the present invention when it is in a reset preparation state;

[0032] Fig.13 It is a schematic diagram of the state when the anastomotic clip is fully pulled out.

[0033] In the figure, 1. removal cap, 101. removal cap body, 1011. notch, 102. fixer, 2. removal hook, 201. handle, 202. hook part, 203. sliding ring, 204. pull rope, 3. anastomotic clip, 301. anastomotic clip body, 3011. connecting ring, 3012. spike part, 302. removal wire, 303. wire hole, 4. endoscope, 5. arc chamfer, 6. chamfer slope, 7. perforation, 8. tissue. DETAILED DESCRIPTION

[0034] 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.

[0035] The "front end" in the present invention refers to the end of the instrument close to the perforation 7 and tissue 8 during surgery, and the "rear end" refers to the end of the instrument away from the perforation 7 and tissue 8 during surgery.

[0036] like Figure 1-Figure 10As shown, an anastomotic clip 3 removal set comprises a removal cap 1, a removal hook 2 and an anastomotic clip 3. The removal cap 1 is suitable for being installed at the front end of an endoscope 4, and the front end of the removal cap is suitable for being accommodated in the anastomotic clip, that is, the outer diameter of the removal cap 1 is less than or equal to the inner diameter of the anastomotic clip 3, and the removal hook 2 can pass through the removal cap 1 and hook the anastomotic clip 3; when the removal hook 2 is pulled out backward, the removal hook 2 drives the anastomotic clip 3 to be sleeved on the outer periphery of the front end of the removal cap 1. The removal cap 1 is a tubular structure, and the anastomotic clip 3 can be sleeved on the outer periphery of the removal cap 1.

[0037] When it is necessary to remove the anastomotic clip 3 that has been clamped on the tissue 8, the endoscope 4 sends the removal cap 1 to the anastomotic clip 3, and the removal hook 2 passes through the removal cap 1 through the clamp channel hole of the endoscope 4. The removal hook 2 hooks the anastomotic clip 3 and pulls the anastomotic clip 3 backward. The anastomotic clip 3 is coaxial with the removal cap 1. While the anastomotic clip 3 moves backward, the spike portion 3012 of the anastomotic clip 3 is gradually opened by the removal cap 1, so that the anastomotic clip 3 is separated from the tissue 8 until the anastomotic clip 3 is completely covered on the removal cap 1. Then the removal hook 2 is separated from the anastomotic clip 3, the removal hook 2 is pulled out, and the anastomotic clip 3 is taken out together with the endoscope 4. The present invention can make the spike portion 3012 of the anastomotic clip 3 open synchronously when the anastomotic clip 3 is pulled out, thereby avoiding tearing damage to the tissue 8, and can achieve repeated clamping of the tissue 8.

[0038] The anastomotic clip 3 can be but is not limited to the following structure: the anastomotic clip 3 includes an anastomotic clip body 301 and a removal line 302. The front end of the anastomotic clip body 301 can be closed, and the rear end of the anastomotic clip body 301 is provided with a plurality of line holes 303 along the circumferential direction. The removal line 302 passes through the line holes 303 and is fixed to the anastomotic clip body 301. The anastomotic clip 3 is axially through, and the anastomotic clip body 301 generally includes a connecting ring 3011 and a spike portion 3012. The line holes 303 are located on the connecting ring 3011, and the spike portion 3012 is located at the front end of the connecting ring 3011. The spike portion 3012 is composed of at least two spike claws. The spike portion 3012 is made of shape memory material. When not subjected to external force, the front end of the spike portion 3012 is in a contracted clamping state. The spike claws can be a conical structure or a toothed structure. Figure 7 The spike claws in the anastomotic clip 3 shown are tooth-shaped structures, there may be two or more wire holes 303, there may be multiple removal wires 302, each of which is connected to each other, and the connection point of the removal wire 302 is located on the central axis of the anastomotic clip body 301, such as Figure 3 and Figure 4 The anastomotic clip 3 shown in the figure is provided with two thread holes 303, and the two ends of a removal thread 302 are connected to the two thread holes 303. Figure 5 and Figure 6 The anastomotic clip 3 shown is provided with four wire holes 303 , and two removal wires 302 are respectively connected to two opposite wire holes 303 , while the two removal wires 302 are intersected and connected on the central axis of the anastomotic clip body 301 . Figure 8 and Fig. 9 The illustrated anastomotic clip 3 is provided with three wire holes 303, one end of three retrieval wires 302 are respectively connected to the three wire holes 303, and the other ends of the three retrieval wires 302 are intersected and connected on the central axis of the anastomotic clip body 301. The connection point of each retrieval wire 302 is arranged on the central axis of the anastomotic clip body 301, so that the retrieval hook 2 can be directly hooked on the connection point of the retrieval wire 302 after being extended into the endoscope 4, without the need to bend the wire for finding the wire.

[0039] like Fig.10 As shown, the removal hook 2 includes a handle 201 and a hook portion 202 located at the front end of the handle 201. The hook portion 202 can be directly fixed to the front end of the handle 201. In a specific embodiment of the present invention, the hook portion 202 is movably connected to the handle 201, and the front and rear positions of the hook portion 202 can be fine-tuned when the handle 201 is fixed. Specifically, the removal hook 2 also includes a slip ring 203 and a cable 204. The slip ring 203 is slidably connected to the handle 201. The handle 201 has an axial hole that passes through the front end of the handle 201. One end of the cable 204 is connected to the slip ring 203 and the other end is connected to the hook portion 202. When the removal hook 2 reaches the target position through the clamp channel hole of the endoscope 4, the position of the hook portion 202 can be fine-tuned by pushing the slip ring 203 forward and backward.

[0040] like Figure 1 and Figure 2 As shown, the removal cap 1 includes a removal cap body 101 and a holder 102 fixed to the rear end of the removal cap body 101. The holder 102 is suitable for being installed at the front end of the endoscope 4. The front end of the removal cap body 101 has two or more notches 1011. The holder 102 is an annular structure. Since the holder 102 is fixed to the endoscope 4, the specific structure of the holder 102 is set according to the model of different endoscopes 4. When the anastomotic clip 3 is taken out, the anastomotic clip 3 is sleeved on the outer periphery of the removal cap body 101. The notch 1011 is used to make way for the removal line 302. Since the anastomotic clip 3 is driven to move backward by the removal line 302, if the removal cap body 101 is an integral tubular structure, it will be difficult for the anastomotic clip 3 to be sleeved on the outer periphery of the removal cap body 101 backward due to the obstruction of the front end of the removal cap body 101. For this reason, the notch 1011 needs to be provided to make the removal line 302 gradually move backward. Preferably, the notch 1011 extends along the axial direction of the removal cap 1. The arrangement position of the slot 1011 can be random, and the removal line 302 can be matched with the slot 1011 by rotating the removal hook 2, so that the removal line 302 is trapped in the slot 1011. In a preferred embodiment, the slot 1011 and the wire hole 303 are arranged in a one-to-one correspondence, and the one-to-one correspondence means that the number of slots 1011 and wire holes 303 is equal, and the connecting line between each slot 1011 and the corresponding wire hole 303 is parallel to the central axis of the removal cap 1.

[0041] As a preference, the front end of the removal cap body 101 is provided with an arc chamfer 5, such as Figure 1 As shown, the arc chamfer 5 is located at the outer peripheral edge of the removal cap body 101. When the anastomotic clip 3 moves backward and is ready to be sleeved on the outer periphery of the removal cap 1, the anastomotic clip 3 first contacts the arc chamfer 5. The arc chamfer 5 can play a transition guiding role and can also avoid causing damage to the human cavity or scratching the surface of the anastomotic clip 3.

[0042] Preferably, the front end of the removal cap body 101 located on both sides of each notch 1011 has chamfered slopes 6. The provision of the chamfered slopes 6 makes the front end of the notch 1011 present an expanded structure, which facilitates the removal wire 302 to enter the notch 1011.

[0043] The working principle of the present invention is as follows: a special removal cap 1 is installed at the front end of an endoscope 4, the endoscope 4 is first inserted to the target position, and then the removal hook 2 is inserted through the clamp channel hole of the endoscope 4, so that the removal hook 2 extends out of the removal cap 1, and the hook portion 202 hooks the removal line 302 on the anastomotic clip 3. At this time, the device is in a pull-out preparation state (such as Fig.11 Then, the removal cap 1 is pushed forward or the removal hook 2 is pulled back, and the removal hook 2 is withdrawn into the clamp channel hole of the endoscope 4 until the connecting ring 3011 is sleeved on the outer periphery of the removal cap 1. At this time, the device is in a reset preparation state, and the anastomotic clip 3 is about to be reset (as shown in FIG. Fig.12 Continue to pull the removal hook 2, use the arc chamfer 5 at the front end of the removal cap 1 to pull the anastomotic clip 3 back to its original position, and reinstall the anastomotic clip 3 onto the removal cap 1. The endoscope 4 and the anastomotic clip 3 are withdrawn from the human body, thereby removing the anastomotic clip 3 (as shown in FIG. Fig.13 shown).

[0044] Furthermore, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0045] 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.

[0046] 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 removal kit, characterized in that: The invention comprises a removal cap (1), a removal hook (2) and an anastomotic clip (3), wherein the removal cap (1) is suitable for being mounted on the front end of an endoscope (4), the front end of the removal cap (1) is suitable for being received in the anastomotic clip (3), and the removal hook (2) is capable of passing through the removal cap (1) and hooking the anastomotic clip (3); When the removal hook (2) is pulled out backwards, the removal hook (2) drives the anastomotic clip (3) to be sleeved on the outer periphery of the front end of the removal cap (1); the anastomotic clip (3) comprises an anastomotic clip body (301) and a removal line (302); the front end of the anastomotic clip body (301) is closable, and the rear end of the anastomotic clip body (301) is provided with a plurality of line holes (303) along the circumferential direction, and the removal line (302) passes through the line holes (303) and is fixed to the anastomotic clip body (301); The removal cap (1) comprises a removal cap body (101) and a holder (102) fixed to the rear end of the removal cap body (101), the holder (102) being suitable for being mounted on the front end of an endoscope (4), and the front end of the removal cap body (101) having two or more notches (1011); The notches (1011) and the wire holes (303) are arranged in a one-to-one correspondence; The removal hook (2) comprises a handle (201) and a hook portion (202) located at the front end of the handle (201).

2. The anastomotic clip removal kit according to claim 1, characterized in that: There are a plurality of removal lines (302), each of which is connected to each other, and the connection points of the removal lines (302) are located on the central axis of the anastomotic clip body (301).

3. The anastomotic clip removal kit according to claim 1, characterized in that: The front end of the removal cap body (101) is provided with an arc chamfer (5).

4. The anastomotic clip removal kit according to claim 1, characterized in that: The notch (1011) extends along the axial direction of the removal cap (1).

5. The anastomotic clip removal kit according to claim 1, characterized in that: The front end of the removal cap body (101) located on both sides of each notch (1011) has a chamfered slope (6).

6. The anastomotic clip removal kit according to claim 1, characterized in that: The removal hook (2) further comprises a slip ring (203) and a pull rope (204); the slip ring (203) is slidably connected to the handle (201); the handle (201) comprises an axial hole passing through the front end of the handle (201); one end of the pull rope (204) is connected to the slip ring (203) and the other end is connected to the hook portion (202).

Images