Hemostatic clip configuration

Abstract

The application is a hemostatic clip structure, comprising a hemostatic clip body having two clip blades and a clip seat connecting the two clip blades, the clip blades comprising a connecting section and a clip section extending from the connecting section, a clip ring being sleeved on the connecting section and moving between the clip section and the clip seat; the clip seat has a first slot penetrating the inner side and the outer side, and a second slot recessed from the inner side to the outer side and intersecting the first slot, the second slot having a slot bottom surface and opposite two slot side surfaces, a recess being recessed from the slot side surfaces, the recess having a barrier wall adjacent to the inner side, and the outer side of the clip seat being provided with a release slot penetrating to the second slot and intersecting the first slot, the length of the release slot being smaller than that of the first slot. A control wire is releasably connected to the clip seat, the control wire having a connecting section expanding radially, the connecting section extending from the outer side of the clip seat along the first slot to the inner side of the clip seat.

Description

Technical Field

[0001] This invention relates to a hemostatic clip structure, specifically a hemostatic clip body with a through first groove and a concave second groove intersecting the first groove on the clip base. Therefore, the control cable, after passing through the first groove, can be rotated and retracted into the clip base via the second groove, where it is assembled. Upon firing, the control cable can be directly deformed and disengaged from the clip base. Background Technology

[0002] Hemostatic clips are commonly used in endoscopic minimally invasive surgery for the localized closure and hemostasis of wounds. The principle is to close the open wound surface by clamping the clips.

[0003] Examples of hemostatic clips include Chinese Patent No. CN107106181A "Multiple-shot ligation device", Chinese Patent No. CN102065780A "Hemostatic clip holding device and method", US Patent No. US09044239B2 "Multiple hemostatic clip structure", Chinese Patent No. CN108784775A "Multiple-shot tissue clips", Chinese Patent No. CN210811306U "A tissue clamping device", and Chinese Patent No. CN217827980U "Tissue clamp holder", etc.

[0004] In CN107106181A, a traction wire is connected in series with multiple hemostatic clips. Each hemostatic clip includes a pair of clips. The tail of the clip is provided with a support plate that will deform or break under a predetermined pressure. The clip forms a hole through the support plate. The traction wire passes through the hole formed by the support plate and the front end of the traction wire is blocked by the support plate. When the hemostatic clip at the front end is fired, the support plate is broken, causing the hemostatic clip to detach from the traction wire.

[0005] In CN102065780A, a hemostatic clip is releasably connected to a connector on a control line, and when the hemostatic clip is fired, the connector is broken by force, causing the hemostatic clip to detach from the control line.

[0006] In US09044239B2, a control line is connected to a ball on the connector of a hemostatic clip. When the hemostatic clip is fired, the control line detaches from the ball, causing the hemostatic clip to be released.

[0007] In the aforementioned case, the hemostatic clip and the control line must be connected through a disengagement mechanism, which is a complex mechanism and may result in the hemostatic clip failing to fire.

[0008] In CN108784775A, the clamp base of the hemostatic clip is provided with a cross groove that can be elastically deformed, and the control lever (control line) has a pull rod ring that is engaged in the cross groove of the hemostatic clip. When the hemostatic clip is fired, the pull rod ring of the control lever (control line) is disengaged from the hemostatic clip through the elastically deformable cross groove.

[0009] In CN210811306U, the locking part of the hemostatic clip is connected to the connecting part of the elastic release member (control line). When the hemostatic clip is fired, the locking part of the hemostatic clip is released from the connecting part of the elastic release member by the elastic deformation of the elastic release member.

[0010] In CN217827980U, the operating arm of the hemostatic clamp is elastically connected to the control arm of the control element (control line). When the hemostatic clamp is fired, the control arm of the control element elastically deforms and disengages from the operating arm of the hemostatic clamp.

[0011] In the aforementioned case, the hemostatic clip and control line are assembled using a snap-fit ​​method. When the hemostatic clip is fired, the snap-fit ​​joint between the hemostatic clip and the control line undergoes elastic deformation, causing the hemostatic clip to detach from the control line and complete the firing. However, due to the small size of the hemostatic clip, the snap-fit ​​assembly of the hemostatic clip and control line is quite difficult. Summary of the Invention

[0012] Therefore, the object of the present invention is to provide a hemostatic clip structure.

[0013] This invention provides a hemostatic clip structure, comprising:

[0014] A hemostatic clip body includes two clips that can be opened and closed relative to each other and a clip base connecting the two clips. Each clip includes a connecting section connected to the clip base and a clip portion extending from the connecting section. The clip base has an inner side adjacent to the clips and an outer side opposite to the inner side. The clip base has a first groove penetrating the inner side and the outer side, and a second groove that is recessed from the inner side to the outer side and intersects the first groove. The second groove has a bottom surface and a side surface opposite to the two grooves. At least one side surface of the groove is recessed to form a recess. The recess has a retaining wall adjacent to the inner side.

[0015] Furthermore, the outer side of the clamp is provided with a release groove that extends through the second groove and intersects with the first groove, and the length of the release groove is less than that of the first groove.

[0016] Furthermore, a control line is provided, which has a connecting part that expands radially and can be deformed by pressure. The connecting part extends from the outside of the clamp along the first groove to the inside of the clamp, and after rotating the angle, it retracts into the clamp along the second groove and is set in the recess and blocked between the retaining wall and the bottom surface of the groove.

[0017] Furthermore, the connecting segment includes at least a first segment, a second segment, and a third segment connected to each other. The first segment connects to the clamping part, and the third segment connects to the clamping seat. The thickness of the first segment and the third segment is less than the thickness of the second segment. The direction in which the two clamping pieces open and close relative to each other is a thickness direction. The thickness of the first segment and the third segment in this thickness direction is less than the thickness of the second segment, and the thicknesses of the first segment, the second segment, and the third segment gradually change and smoothly connect. Preferably, in this thickness direction, the first segment of the two clamping pieces is a concave arc shape facing outwards, and the second segment and the third segment are convex arc shapes facing inwards. The first segment has a first curvature, the second segment has a second curvature, and the third segment has a third curvature, the third curvature being greater than the second curvature and the second curvature being greater than the first curvature.

[0018] Furthermore, the two clamping pieces are normally open relative to each other, and a clamping ring is fitted onto the connecting section of the two clamping pieces and can move between the clamping part and the clamping seat. A limiting step surface is formed on the clamping seat, and each of the two clamping parts has a limiting baffle, which limits the clamping ring by the limiting step surface and the limiting baffle.

[0019] Furthermore, when the two clips are closed, the clamping portions of the two clips are arranged in an overlapping manner. Preferably, the clamping portion located on the inner side is in the form of a barb.

[0020] Furthermore, the outer side of the clamp is provided with a release groove that extends through the second groove and intersects the first groove, the length of the release groove being less than that of the first groove; the two clamping pieces are normally open relative to each other, a clamping ring is fitted onto the connecting section of the two clamping pieces, and can move between the clamping part and the clamp; a control cable is releasably connected to the clamp, the control cable has a connecting part that expands radially and can be deformed under pressure, the connecting part extends from the outer side of the clamp along the first groove to the inner side of the clamp, and after rotating an angle, retracts along the second groove into the clamp and is positioned in the recess and blocked between the retaining wall and the bottom surface of the groove; there is a cartridge, the cartridge is hollow tubular with a channel, one end of the cartridge is provided with an end cap, the end of the end cap has an outlet, the inner surface of the end cap is provided with an inclination towards the outlet. A tapered elastic stop; an operating hose connected to the other end of the cartridge; at least one hemostatic clip body disposed in the channel of the cartridge, the control line extending from the other end of the cartridge into the operating hose; when the hemostatic clip body is located in the channel of the cartridge, the two clips are closed by the inner surface of the channel, and the clip ring is adjacent to the clip seat; when the hemostatic clip body is fired, the two clips first extend out of the outlet of the end cap and open relative to each other, and the clip ring passes over the elastic stop; then the control line is pulled back, causing the clip ring to be stopped by the elastic stop and move to the adjacent two clips, so that the two clips are closed by the inner surface of the clip ring; the tension of the control line causes a reaction force to accumulate at the connection of the control line, causing the connection to deform under force and disengage from the release groove of the clip seat.

[0021] Furthermore, the elastic stop of the end cap is a spring piece cut from the end cap. The spring piece has a free end and a connecting end, and the spring piece gradually expands from the free end to the connecting end.

[0022] Furthermore, a plurality of hemostatic clip bodies are arranged in the channel of the compartment, a plurality of control lines extend into the operating hose, and the cross-section of the plurality of control lines and the operating hose is circular. The inner diameter of the operating hose is formed by two adjacent control lines forming an external circle according to Cartesian theorem, while the inner diameter of the operating hose forms an internal circle with the aforementioned control lines.

[0023] The following effects can be achieved based on the above technical features:

[0024] 1. The clamp body of the hemostatic clip is provided with a first groove that runs through the outer and inner sides and a second groove that is recessed from the inner side and intersects the first groove. The connecting part of the front end of the control line passes through the first groove from the outside to the inside and then rotates to retract into the clamp body through the second groove. In this way, the control line can be easily assembled on the clamp body through the connecting part and connected to the hemostatic clip body. Moreover, the control line is directly assembled on the clamp body at the rear end of the hemostatic clip body through the connecting part at the front end and is not affected by the length of the control line.

[0025] 2. The control line is integrally formed, or it can be connected to a multi-core stranded wire to form an integral detachment structure. When the hemostatic clip body is fired, the connecting part directly deforms elastically and detaches from the clamp seat of the hemostatic clip body. This eliminates the need for components that assist in the detachment mechanism, avoids the assembly and welding process between the hemostatic clip body and the control line, reduces the risk of uncertainty factors in the welding process, and avoids improper operation that could break the control line before the hemostatic clip body is fired.

[0026] 3. When the hemostatic clip body is not fired, it is stored in the magazine and closed. Due to stress concentration, the hemostatic clip body may deform and the distance between the two clips is insufficient when firing. Therefore, Hooke's law is used to set the connecting section of the two clips into three sections with unequal thickness and unequal curvature, so that the bending amount and stress are evenly distributed when the hemostatic clip body is closed, and the hemostatic clip body is in a state of elastic stability.

[0027] 4. The elastic stop on the end cap acts as a locking point for the clamping ring when the two clamping pieces are pushed out of the end cap and the control line is pulled back. The clamping ring is stopped by the elastic stop and adjacent to the two clamping pieces. The two clamping pieces are closed by the inner surface of the clamping ring. The tension of the control line causes the reaction force to accumulate at the connection part of the control line, causing the connection part to deform under force and disengage from the release groove of the clamp seat. The elastic stop on the end cap is a spring piece cut from the end cap. According to Hooke's law and the lever principle, the spring piece is an elastic section that gradually widens from the free end to the connection end. When it supports the clamping ring, the bending amount and stress of the elastic stop are evenly distributed to prevent breakage.

[0028] 5. When the two clamping parts of the hemostatic clip body are closed, they are staggered and overlapping, and the clamping part on the inner side is in the form of a barb. During the operation, the barb can be used to hook the wound on one side first to facilitate the closure operation and avoid the surgeon being unable to correctly align the wound opening due to spatial visual differences.

[0029] 6. The inner diameter of the operating hose is set according to Cartesian theorem to ensure that the operating hose has the minimum diameter and can effectively drive the hemostatic clamp body to fire. Attached Figure Description

[0030] Figure 1 This is a three-dimensional view of the hemostatic clip structure of the present invention.

[0031] Figure 2 This is a plan view of the hemostatic clip structure of the present invention.

[0032] Figure 3 This is one of the cross-sectional views of the hemostatic clip body disposed in the channel of the cartridge in an embodiment of the present invention.

[0033] Figure 4 This is a second cross-sectional view of the hemostatic clip body disposed in the channel of the cartridge in an embodiment of the present invention.

[0034] Figure 5 This is a cross-sectional view of a control line extending into an operating hose and being driven by the operating hose in an embodiment of the present invention.

[0035] Figure 6 This is a rear view of the hemostatic clip structure of the present invention, illustrating that the inner diameter of the operating tubing covers a complex number of control lines according to Cartesian theorem, allowing multiple hemostatic clip bodies to be fired continuously.

[0036] Figure 7 This is a three-dimensional view of the hemostatic clip body in an embodiment of the present invention.

[0037] Figure 8A This is a front view of the hemostatic clip body in an embodiment of the present invention.

[0038] Figure 8B This is a stress distribution diagram of the hemostatic clip body when it is closed according to an embodiment of the present invention.

[0039] Figure 8C This is a stress distribution diagram when the body of an existing hemostatic clip is closed.

[0040] Figure 9 This is one of the operational schematic diagrams of the control line assembly being fitted onto the hemostatic clip body in an embodiment of the present invention.

[0041] Figure 10 This is the second schematic diagram of the operation of the control line assembly attached to the hemostatic clip body in an embodiment of the present invention.

[0042] Figure 11 This is the third schematic diagram of the operation of the control line assembly attached to the hemostatic clip body in this embodiment of the invention.

[0043] Figure 12 This is the fourth schematic diagram of the operation of the control line assembly attached to the hemostatic clip body in an embodiment of the present invention.

[0044] Figure 13 This is the fifth schematic diagram of the operation of the control line assembly attached to the hemostatic clip body in an embodiment of the present invention.

[0045] Figure 14 This is the sixth schematic diagram of the operation of the control line assembly attached to the hemostatic clip body in an embodiment of the present invention.

[0046] Figure 15 This is one of the schematic diagrams showing the hemostatic clip body extending out of the end cap and opening relative to the outlet when the hemostatic clip structure of the present invention is fired.

[0047] Figure 16 This is the second schematic diagram showing the hemostatic clip body extending out of the end cap and opening relative to the outlet when the hemostatic clip structure of the present invention is fired.

[0048] Figure 17 This is one of the schematic diagrams showing that when the hemostatic clip structure of the present invention is fired, the control line is pulled back to close the clip by the clamping ring, and the connection part of the control line disengages from the clip seat.

[0049] Figure 18 This is the second schematic diagram showing that when the hemostatic clip structure of the present invention is fired, the control line is pulled back to close the clip by the clamping ring, and the connection part of the control line is dislodged from the clip seat.

[0050] Figure 19 This is one of the schematic diagrams showing the control line connection deforming and disengaging from the release groove on the clamp seat when the hemostatic clip structure of the present invention is fired.

[0051] Figure 20 This is the second schematic diagram showing the deformation of the control line connection portion and its disengagement from the release groove on the clamp seat when the hemostatic clip structure of the present invention is fired.

[0052] Figure 21 This is a schematic diagram of the hemostatic clip structure of the present invention, in which the hemostatic clip body clamps the wound after firing.

[0053] Explanation of reference numerals in the attached drawings: 1-Cylinder; 11-End cap; 111-Outlet; 112-Spring; 1121-Free end; 1122-Connecting end; 12-Channel; 2-Operating tubing; 3-Hemostatic clip body; 31-Clamping piece; 311-Connecting section; 312-Clamping part; 313-Limiting baffle; 314-First section; 315-Second section; 316-Third section; 32-Clamping seat; 321-Limiting step surface; 322-Inner side; 323-Outer side; 324-First groove; 325-Second groove; 3251-Groove bottom surface; 3252-Groove side surface; 326-Recess; 3261-Block; 33-Control line; 331-Connecting part; 4-Clamping ring; 5-Elastic tubing; 3A-Hemostatic clip body; A-Wound surface; T-Thickness direction. Detailed Implementation

[0054] Based on the above technical features, the main functions of the hemostatic clip structure of the present invention will be clearly demonstrated in the following embodiments.

[0055] Please see Figure 1 and Figure 2 As shown, the hemostatic clip structure of this embodiment includes: a cartridge 1, one end of which is provided with an end cap 11; an operating hose 2 connected to the other end of the cartridge 1, and an elastic hose 5 covering the operating hose 2; and a plurality of hemostatic clip bodies 3 disposed in the cartridge 1 (see reference). Figure 3 and Figure 4 An operating component is connected to the operating hose 2. Medical personnel can control the firing of the hemostatic clamp body 3 by operating this operating component. Since this operating component is an existing mechanism, it is not shown in the figure, and the mechanism and operation method of the operating component are not described in detail in the following embodiments.

[0056] Please see Figure 3 , Figure 4 and Figure 5As shown, the cartridge 1 is a hollow tube with a channel 12. The end cap 11 has an outlet 111 at its end, and the inner surfaces of the end cap 11 are respectively provided with elastic stops that gradually taper towards the outlet 111. In this embodiment, the elastic stops of the end cap 11 are spring pieces 112 cut from the end cap 11. The spring piece 112 has a free end 1121 and a connecting end 1122. The spring piece 112 gradually expands from the free end 1121 to the connecting end 1122. Therefore, during operation, the bending amount and stress of the spring piece 112 can be evenly distributed to avoid breakage. For example, in conjunction with the hemostatic clip body 3 of this embodiment, the end cap 11 uses 304, 316, or 420J stainless steel. The spring piece 112 is made of stainless steel such as 2 or 630. The angle of the spring piece 112 from the free end 1121 to the connecting end 1122 can be between 1 degree and 30 degrees (3.33 degrees in the embodiment). The length of the spring piece 112 from the free end 1121 to the connecting end 1122 can be between 1 mm and 10 mm (4 mm in the embodiment). The thickness of the spring piece 112 can be between 0.1 mm and 1 mm (0.3 mm in the embodiment). The width of the free end 1121 and the connecting end 1122 of the spring piece 112 can be between 0.1 mm and 2.5 mm (the width of the free end 1121 in the embodiment is 0.83 mm, and the width of the connecting end 1122 is 1.3 mm).

[0057] The aforementioned hemostatic clip bodies 3 are arranged sequentially from one end of the cartridge 1 to the other end in the channel 12. Each hemostatic clip body 3 has two clamping pieces 31 that can be closed relative to each other and a clamping seat 32 connecting the two clamping pieces 31. Each hemostatic clip body 3 is connected to a control line 33. The control line 33 extends out of the channel 12 from the other end of the cartridge 1 and extends into the operating hose 2, and can drive the hemostatic clip body 3 to fire through the operating hose 2.

[0058] Please see Figure 6 As shown, in this embodiment, the control line 33 and the operating hose 2 have circular cross-sections. The inner diameter of the operating hose 2 is determined by Cartesian law, with each of the two adjacent control lines 33 forming an external circumference, while the inner diameter of the operating hose 2 forms an internal circumference with the control lines 33. This allows the operating hose 2 to have a minimum diameter and effectively drive the hemostatic clamp body 3 (as described above). Figure 3 and Figure 4 ) Continuous firing.

[0059] Please see Figure 7As shown, the two clips 31 of the hemostatic clip body 3 include a connecting section 311 connected to the clip base 32 and a clip portion 312 extending from the connecting section 311. A clip ring 4 is sleeved on the connecting section 311. The clip ring 4 can move between the clip portion 312 and the clip base 32. A limiting step surface 321 is formed on the clip base 32. Each of the two clip portions 312 has a limiting baffle 313. The limiting baffle 313 on the clip portion 312 and the limiting step surface 321 on the clip base 32 can limit the movement of the clip ring 4 and prevent the clip ring 4 from falling out of the hemostatic clip body 3.

[0060] Please see Figure 8A As shown, the two clips 31 of the hemostatic clip body 3 open and close in a thickness direction T. The connecting section 311 of the clips 31 includes a first section 314, a second section 315, and a third section 316 connected together. The first section 314 connects to the clip portion 312, and the third section 316 connects to the clip base 32. The thickness of the first section 314 and the third section 316 in the thickness direction T is less than the thickness of the second section 315, and the thicknesses of the first section 314, the second section 315, and the third section 316 gradually change and connect smoothly. In the thickness direction T, the first segment 314 of the two clips 31 is an inwardly concave arc shape facing outwards, and the second segment 315 and the third segment 316 are convex arc shapes facing inwards. The first segment 314 has a first curvature, the second segment 315 has a second curvature, and the third segment 316 has a third curvature. The third curvature is greater than the second curvature and the second curvature is greater than the first curvature.

[0061] This embodiment takes a hemostatic clip with a working channel of 2.8 mm as an example. The material of the body 3 of the hemostatic clip is cobalt-chromium-molybdenum alloy (CoCrMo), but medically available polymers and metals (304, 316, 420J2, 630, pure titanium, titanium alloy, nickel-titanium alloy, cobalt-chromium alloy, etc.) are also applicable. The opening angle of the two clamping plates 31 can be between 10 degrees and 120 degrees (33.7 degrees in the embodiment), the opening width (claw distance) of the two clamping plates 31 can be between 6 mm and 20 mm (14.45 mm in the embodiment), the claw length (total height) of the two clamping plates 31 can be between 5 mm and 25 mm (16.87 mm in the embodiment), the clamping portion 312 of the two clamping plates 31 can be between 0.5 mm and 2.0 mm (1.2 mm in the embodiment), and the length of the connecting section 311 of the two clamping plates 31 can be between 5 mm and 20 mm (11.92 mm in the embodiment). In the connecting segment 311 of the clip 31, the thickness of the first segment 314 is between 0.2 mm and 0.21 mm, the thickness of the second segment 315 is between 0.21 mm and 0.32 mm, and the thickness of the third segment 316 is between 0.32 mm and 0.22 mm. The first curvature of the first segment 314 can use a curvature radius between 3 mm and 9 mm (6 mm in the embodiment), the second curvature of the second segment 315 can use a curvature radius between 6 mm and 12 mm (9 mm in the embodiment), and the third curvature of the third segment 316 can use a curvature radius between 7.5 mm and 13.5 mm (10.5 mm in the embodiment).

[0062] Please see Figure 8B and Figure 8C As shown, when the existing hemostatic clip body 3A is not fired, it is stored in the magazine and closed, which can cause stress concentration. This may lead to deformation of the hemostatic clip body 3A and insufficient claw distance when firing. The present invention uses Hooke's law to make the two clips 31 of the hemostatic clip body 3 have unequal thickness and unequal area ratio, so that the bending amount and stress are evenly distributed when the hemostatic clip body 3 is closed, and the hemostatic clip body 3 achieves an elastically stable state.

[0063] Figures 9 to 14 This illustration shows the control line 33 of this embodiment being assembled with the clamp seat 32 of the hemostatic clamp body 3. Figure 9 and Figure 10As can be seen, the clamping seat 32 has an inner side 322 adjacent to the clamping piece 31 and an outer side 323 opposite to the inner side 322. The clamping seat 32 has a first groove 324 penetrating the inner side 322 and the outer side 323, and a second groove 325 that is recessed from the inner side 322 to the outer side 323 and intersects with the first groove 324. In this embodiment, the second groove 325 intersects the first groove 324 at a 90-degree angle, but it is not limited to this. The second groove 325 has a groove bottom surface 3251 and a groove side surface 3252 opposite to the second groove. At least one groove side surface 3252 is recessed to form a recess 326. The recess 326 has a retaining wall 3261 adjacent to the inner side 322. The outer side 323 of the clamping seat 32 is provided with a release groove 327 that penetrates to the second groove 325 and intersects with the first groove 324. The length of the release groove 327 is less than that of the first groove 324. The control line 33 has a radially expanding connecting portion 331 that can be deformed under pressure. In this embodiment, the connecting portion 331 is annular, but not limited to this; for example, it can be C-shaped, V-shaped, etc. The connecting portion 331 can be integrally formed on the control line 33, or it can be assembled with multi-core stranded wires, for example. The connecting portion 331 extends from the outer side 323 of the clamp 32 along the first groove 324 to the inner side 322 of the clamp 32. Figure 11 Rotate the connecting part 331 by an angle, and then as follows Figures 12 to 14 The connecting part 331 is inserted into the clamp 32 along the second groove 325 and is positioned in the recess 326 and blocked between the baffle 3261 and the bottom surface 3251 of the groove, thereby connecting the control line 33 to the clamp 32 of the hemostatic clamp body 3.

[0064] Please see Figure 15 , Figure 16 , Figure 17 and Figure 18 As shown, when the hemostatic clip body 3 is fired, the two clips 31 first extend out of the outlet 111 of the end cap 11 and open relative to each other, and the clip ring 4 passes over the spring piece 112, then the operating hose 2 (as described above) Figure 5 and Figure 6 Pulling back causes the magazine 1 to retract, and the control line 33 also pulls back, causing the clamping ring 4 to move to the adjacent two clamping parts 312, which are then closed by the inner surface of the clamping ring 4. The control line 33 then disengages from the clamping seat 32, allowing the hemostatic clip body 3 to detach from the magazine 1, thus completing the firing of the hemostatic clip body 3. (See also...) Figure 19 and Figure 20 As shown, when the control line 33 is pulled back, the normal tension of the control line 33 causes a reaction force to accumulate on the connecting part 331 of the control line 33, causing the connecting part 331 to abut against the bottom surface 3251 of the second groove 325 and deform under force, thereby disengaging from the disengagement groove 327 of the clamp 32.

[0065] Please see Figure 21 As shown, when the two clips 31 of the hemostatic clip body 3 are closed, the clip portion 312 is in an alternating stacked state, and the clip portion 312 located on the inner side is in an arc-shaped barb shape. Therefore, during the operation, the barb clip portion 312 can be used to hook the wound surface A on one side first to facilitate the closure operation and avoid the surgeon being unable to correctly align the wound opening due to spatial visual differences.

[0066] Based on the above description of the embodiments, it should be fully understood that the operation, use and effects of the present invention are as follows. The above embodiments are only preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All simple equivalent changes and modifications made in accordance with the content of the present invention are within the scope of the present invention.

Claims

1. A hemostatic clip structure, characterized in that, Including: A hemostatic clip body includes two clips that can be opened and closed relative to each other and a clip base connecting the two clips. Each clip includes a connecting section connected to the clip base and a clip portion extending from the connecting section. The clip base has an inner side adjacent to the clips and an outer side opposite to the inner side. The clip base has a first groove penetrating the inner side and the outer side, and a second groove that is recessed from the inner side to the outer side and intersects the first groove. The second groove has a bottom surface and a side surface opposite to the two grooves. At least one side surface of the groove is recessed to form a recess. The recess has a retaining wall adjacent to the inner side. The connecting segment includes at least a first segment, a second segment, and a third segment connected to each other. The first segment connects to the clamping part, the third segment connects to the clamping seat, and the thickness of the first segment and the third segment is less than the thickness of the second segment.

2. The hemostatic clip structure as described in claim 1, characterized in that, The outer side of the clamp is provided with a release groove that extends through the second groove and intersects with the first groove, and the length of the release groove is less than that of the first groove.

3. The hemostatic clip structure as described in claim 1, characterized in that: A control line is also provided, which has a connecting part that expands radially and can be deformed by pressure. The connecting part extends from the outside of the clamp along the first groove to the inside of the clamp, and after rotating the angle, it retracts into the clamp along the second groove and is set in the recess and blocked between the retaining wall and the bottom surface of the groove.

4. The hemostatic clip structure as described in claim 1, characterized in that, The two clips open and close in a direction that is a thickness direction, and the thickness of the first segment and the third segment in this thickness direction is less than the thickness of the second segment.

5. The hemostatic clip structure as described in claim 4, characterized in that, The thickness of the first, second, and third segments gradually changes and connects smoothly.

6. The hemostatic clip structure as described in claim 5, characterized in that, In the thickness direction, the first segment of the two clips is an arc shape that is concave to the outer side, and the second and third segments of the two clips are arc shapes that are convex to the inner side.

7. The hemostatic clip structure as described in claim 6, characterized in that, The first segment has a first curvature, the second segment has a second curvature, and the third segment has a third curvature. The third curvature is greater than the second curvature, and the second curvature is greater than the first curvature.

8. The hemostatic clip structure as described in claim 1, characterized in that, The two clips are normally open relative to each other, and a clamping ring is fitted onto the connecting section of the two clips and can move between the clamping part and the clamping seat.

9. The hemostatic clip structure as described in claim 8, characterized in that, A limiting step surface is formed on the clamping seat, and each of the two clamping parts has a limiting baffle. The clamping ring is limited by the limiting step surface and the limiting baffle.

10. The hemostatic clip structure as described in claim 1, characterized in that, When the two clips are closed, the clamping parts of the two clips are arranged in an alternating overlapping pattern.

11. The hemostatic clip structure as described in claim 10, characterized in that, The clamp on the inside is in the shape of a barb.

12. The hemostatic clip structure as described in claim 1, characterized in that: The clamp has an outer side with a release groove that extends through the second groove and intersects the first groove. The length of the release groove is shorter than that of the first groove. The two clamping plates are normally open relative to each other. A clamping ring is fitted onto the connecting section of the two clamping plates and can move between the clamping part and the clamp. A control cable is releasably connected to the clamp. The control cable has a radially expanding connecting part that can be deformed under pressure. This connecting part extends from the outside of the clamp along the first groove to the inside of the clamp. After rotation, it retracts along the second groove into the clamp and is positioned in the recess, stopping between the retaining wall and the bottom surface of the groove. A cartridge is provided, which is a hollow tube with a channel. One end of the cartridge has an end cap with an outlet at its end. The inner surface of the end cap has a gradually sloping section that slopes towards the outlet. The cartridge contains a retractable elastic stop; an operating hose connected to the other end of the cartridge; at least one hemostatic clip body disposed in the channel of the cartridge, the control line extending from the other end of the cartridge into the channel and into the operating hose; when the hemostatic clip body is located in the channel of the cartridge, the two clips are closed by the inner surface of the channel, and the clip ring is adjacent to the clip seat; when the hemostatic clip body is fired, the two clips first extend out of the outlet of the end cap and open relative to each other, and the clip ring passes over the elastic stop; then the control line is pulled back, causing the clip ring to be stopped by the elastic stop and move to the adjacent two clips, so that the two clips are closed by the inner surface of the clip ring; the tension of the control line causes a reaction force to accumulate at the connection of the control line, causing the connection to deform under force and disengage from the release groove of the clip seat.

13. The hemostatic clip structure as described in claim 12, characterized in that, The elastic stop of the end cap is a spring piece cut from the end cap. The spring piece has a free end and a connecting end, and the spring piece gradually expands from the free end to the connecting end.

14. The hemostatic clip structure as described in claim 12, characterized in that, A plurality of hemostatic clip bodies are arranged in the channel of the compartment, a plurality of control lines extend into the operating hose, and the cross-section of the plurality of control lines and the operating hose is circular. The inner diameter of the operating hose is formed by two adjacent control lines forming an external circle according to Cartesian theorem, while the inner diameter of the operating hose forms an internal circle with the control lines.

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