A hemostatic clip

Abstract

The present invention relates to a hemostatic clip, comprising a flexible clamping device, a flexible section and a driving handle; the flexible clamping device comprises a continuum and a clamping assembly and a shielding assembly located inside the continuum; the clamping assembly comprises a connecting shaft and multiple groups of clips installed on the connecting shaft at intervals, the two clip bodies of each group of the clips are stored inside the continuum in an elastically bent inward form, the clip bodies of multiple groups of the clips are connected in sequence by connecting lines, and the front end of the continuum is provided with a plurality of clip release grooves and vertical grooves corresponding to each group of the clips on one side; the shielding assembly comprises a shielding sheet, the shielding sheet is located on the inner side of the clip release groove, and the shielding sheet can move in the axial direction to shield or make way for at least part of the clip release groove. The hemostatic clip can avoid the action of taking and placing the hemostatic clip multiple times through a flexible endoscope, greatly saving operation time and reducing operation risks.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, and in particular to a hemostatic clip used under an endoscope to complete wound clamping during an operation. Background Art

[0002] With the continuous development of flexible endoscopic minimally invasive technology, many gastrointestinal diseases that require surgical laparotomy or laparoscopy can be treated with flexible endoscopic minimally invasive treatment.

[0003] With the widespread development of minimally invasive surgery under flexible endoscopy, especially the development of tissue stripping and tissue resection under flexible endoscopy, it often causes defects or perforations in the digestive tract tissue, causing bleeding in the affected area. In this case, it is difficult to stop bleeding and heal in a short period of time through drug treatment alone. In this regard, the use of hemostatic clips to stop digestive tract bleeding under flexible endoscopy is currently the preferred operation in clinical practice.

[0004] However, since most hemostatic clips are single-shot structures and can clamp a small area, if the wound area is large, the hemostatic clips need to be removed and placed multiple times through a flexible endoscope, which increases the operation time and surgical risks. Summary of the invention

[0005] The purpose of the present invention is to provide a hemostatic clip to solve the above technical problems.

[0006] To achieve the above-mentioned purpose, the present invention provides a hemostatic clip, comprising a flexible clamping device, a flexible section and a driving handle, one end of the flexible section is connected to the flexible clamping device, and the other end of the flexible section is connected to the driving handle; the flexible clamping device comprises a continuum and a clamping assembly and a shielding assembly located inside the continuum; the clamping assembly comprises a connecting shaft and a plurality of groups of clips installed on the connecting shaft at intervals, the two clip bodies of each group of the clips are accommodated in the interior of the continuum in a form of elastic inward bending, the clip bodies of the plurality of groups of the clips are connected in sequence by connecting lines, and a plurality of clip release plates corresponding to the clips of each group are provided on one side at the front end of the continuum The cover assembly comprises a cover sheet, which is located on the inner side of the clip release groove, and the cover sheet can be moved in the axial direction to cover or make way for at least part of the clip release groove. In the blocking position, the cover sheet limits the clip to the inside of the continuum, and in the making way position, the clip pops out from the inside along the clip release groove; the driving handle comprises a handle grip and a driving assembly, and the driving assembly comprises a clip operating component and a cover operating component, the clip operating component is used to drive the connecting line to move backward to clamp the clip, and the cover operating component is connected to the cover sheet to drive the cover sheet to move.

[0007] Optionally, the ends of the two clip bodies of each group of the clips are respectively provided with hooks, and a connecting wire constraint ring is provided on the inner side close to the hooks; one end of the connecting wire is connected to the connecting wire constraint ring of the clip body at the front end, and the connecting wire passes through the connecting wire constraint rings of each group of the clips in sequence along a continuous "S" shaped path, and the other end of the connecting wire is connected to a cylindrical pin, which can move axially backward along the continuum and be positioned.

[0008] Optionally, the cylindrical pin is arranged in the radial direction inside the continuum, and the continuum is provided with a long waist hole, and the cylindrical pin can slide along the long waist hole and be positioned at the rear end.

[0009] Optionally, opposite protrusions are provided on both sides of the rear end of the long waist hole, and the cylindrical pin is fixed by the protrusions after passing over the protrusions.

[0010] Optionally, the clip operating component is connected to the cylindrical pin through a release driving tendon and a card, one end of the card is connected to the release driving tendon, and the other end of the card is provided with a card interface and is clamped to the cylindrical pin through the card interface. When tension continues to be applied after the cylindrical pin is clamped, the card interface can be disengaged from the cylindrical pin.

[0011] Optionally, the number of the cards is at least two, and the cards are arranged side by side and spaced apart and are both engaged with the cylindrical pin.

[0012] Optionally, the handle holding portion includes a constraint rod and a main clamping ring located at the end of the constraint rod, the clip operating component includes a clip operating clamping ring that slides with the constraint rod, and the shielding operating component includes a shielding adjustment clamping ring that slides with the constraint rod, and the clip operating clamping ring and the shielding adjustment clamping ring are respectively located on both sides of the constraint rod.

[0013] Optionally, the connecting shaft includes a first connecting shaft and a second connecting shaft, and the two clip bodies of each group of clips are rotatably mounted on the first connecting shaft and the second connecting shaft through a driven gear base respectively; the clamping assembly includes a driving gear mounted on an adjusting shaft, and the adjusting shaft is parallel to the first connecting shaft and the second connecting shaft and can move in an axial direction so that the driving gear selectively engages with the driven gear of each group of clips located on the first connecting shaft or the second connecting shaft.

[0014] Optionally, the driving assembly includes a clip adjustment component, which is connected to the adjustment shaft to drive the adjustment shaft and the driving gear to move in the axial direction and drive the adjustment shaft and the driving gear to rotate after the movement.

[0015] Optionally, the clip adjustment component includes a first clip adjustment knob and a second clip adjustment knob; the first clip adjustment knob is connected to the adjustment shaft and is threadedly engaged with the drive handle, and the adjustment shaft and the drive gear can be driven to move in the axial direction by rotating the first clip adjustment knob; the second clip adjustment knob is connected to the adjustment shaft and is rotatably mounted on the first clip adjustment knob, and the adjustment shaft and the drive gear can be driven to rotate by rotating the second clip adjustment knob, thereby driving different groups of clips to open and close.

[0016] Optionally, the flexible clamping device includes a bending adjustment component, which includes a bending adjustment driving tendon; the continuum is provided with a plurality of hollow grooves on the back side of the clip release groove for enabling the continuum to bend, and the inner side of the continuum is provided with a bending adjustment driving tendon constraint ring, one end of the bending adjustment driving tendon is connected to the inner end portion of the continuum, and the other end of the bending adjustment driving tendon passes through the bending adjustment driving tendon constraint ring and is connected to the bending adjustment component of the driving handle, and the bending adjustment component is used to drive the continuum to bend through the bending adjustment driving tendon.

[0017] Optionally, the bending adjustment component includes a bending adjustment knob, which is connected to the bending adjustment driving tendon and threadably matched with the driving handle, and the continuum can be driven to bend by rotating the bending adjustment knob.

[0018] Optionally, the shielding operating component is connected to the shielding sheet via a shielding driving tendon.

[0019] Optionally, the continuum is in a barrel-shaped structure as a whole, and a restraining groove corresponding to the shielding piece is provided on its inner wall to guide the shielding piece to move forward and backward along the axial direction.

[0020] The hemostatic clip provided by the present invention has multiple groups of clips inside the front end continuous body. Under the limiting effect of the shielding sheet, the multiple groups of clips are stored inside the continuous body before use. When in use, the number of clips to be used can be flexibly selected according to the size of the wound. By moving the shielding sheet, at least part of the clip release groove is selectively opened, thereby releasing the restriction on the corresponding clip, so that the corresponding clip can be ejected from the inside along the clip release groove, and then the clip operating component drives the connecting line to move backward, so that the ejected clip can be clamped, thereby achieving the purpose of clamping the tissue for hemostasis. Since multiple groups of clips can be closed continuously through a driving handle after being placed once, the action of taking and placing the hemostatic clip multiple times through the flexible endoscope can be eliminated, which greatly saves the operation time and reduces the operation risk.

[0021] In a further preferred embodiment, the opening angle of each group of the clips can be adjusted individually, and / or the continuum can be bent, so as to be able to more flexibly close and stop bleeding of wounds of different shapes and sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the overall structure of the hemostatic clip provided by an embodiment of the present invention;

[0023] Figure 2 for Figure 1 A schematic structural diagram of the flexible clamping device shown in;

[0024] Figure 3 for Figure 2 A schematic cross-sectional view of the flexible clamping device shown;

[0025] Figure 4 It is a cross-sectional view when the shielding sheet shields all the clip release grooves;

[0026] Figure 5 A cross-sectional view of the shielding sheet when part of the clip release slot is left open;

[0027] Figure 6 is a schematic diagram of the structure of a clip body of the clip when it is in a bent state;

[0028] Figure 7 is a schematic diagram of the structure of another clip body of the clip when it is in a bent state;

[0029] Figure 8 is a schematic structural diagram of a clip body of the clip in an unfolded state;

[0030] Fig. 9 A schematic diagram of the structure in which the frontmost clip is ejected from the inside along the clip release groove;

[0031] Fig.10 A schematic diagram of the structure of a connecting wire constraint ring in which the connecting wire passes through each group of clips in sequence along a continuous "S"-shaped path;

[0032] Fig.11 It is a schematic diagram of the structure when all the clips are fully popped out;

[0033] Fig.12 is a schematic diagram of a continuum in a bent state;

[0034] Fig.13 It is a schematic diagram of a structure in which a continuum is provided with a bending drive tendon;

[0035] Fig.14 A cross-sectional view of a continuum provided with a bending-adjusting driving tendon;

[0036] Fig.15It is a cross-sectional schematic diagram of a bending drive tendon constraint ring and a shielding sheet constraint groove provided on the inner wall of the continuum;

[0037] Fig.16 It is a schematic diagram of the structure in which the driving gear of the clamping assembly is meshed with the driven gear of the clamping piece;

[0038] Fig.17 for Fig.13 Schematic diagram of the internal structure after removing the continuum;

[0039] Fig.18 It is a schematic diagram of the structure when the driving gear and the shielding piece move to the last clip;

[0040] Fig.19 It is a schematic diagram of the structure when all the clips are fully closed;

[0041] Fig. 20 A schematic diagram of the structure for releasing the driving tendon and the connection between the card and the cylindrical pin;

[0042] Fig.21 It is a schematic diagram of the structure of the release driving tendon, card, cylindrical pin and continuum;

[0043] Fig. 22 It is a structural schematic diagram of the card being separated from the cylindrical pin;

[0044] Fig.23 It is a schematic diagram of the structure of the driving handle;

[0045] Fig.24 This is a schematic diagram of the structure when the bending adjustment knob and the clip adjustment knob are rotated outward.

[0046] In the figure:

[0047] 10-flexible clamping device; 11-continuum; 111-clip release groove; 112-vertical groove; 113-constraint groove; 114-long waist hole; 1141-protrusion; 115-hollow groove; 116-bending driving tendon constraint ring; 12-connecting shaft; 121-first connecting shaft; 122-second connecting shaft; 13-clip; 131-hook; 132-connecting line constraint ring; 133-driven gear base; 1331-shaft hole; 1332-driven gear; 14-connecting line; 15-shielding sheet; 16-cylindrical pin; 17-adjusting shaft; 171-driving gear; 18-card; 181-card interface; 20-flexible section; 30-driving handle; 31-main clamp; 32-restraint rod; 33-shielding adjustment clamp; 34-clip operation clamp; 35-bending knob; 36-clip adjustment knob; 361-first clip adjustment knob; 362-second clip adjustment knob; 41-shielding driving tendon; 42-releasing driving tendon; 43-bending driving tendon. DETAILED DESCRIPTION

[0048] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0049] In this article, the terms "upper, lower, inside, outside" and the like are established based on the positional relationships shown in the drawings. The corresponding positional relationships may also change depending on the drawings, and therefore cannot be understood as absolute limitations on the scope of protection; moreover, relational terms such as "first" and "second" and the like are merely used to distinguish one component from another with the same name, and do not necessarily require or imply any actual relationship or order between these components.

[0050] Please refer to Figures 1 to 3 , Figure 1 A schematic diagram of the overall structure of the hemostatic clip provided by an embodiment of the present invention; Figure 2 for Figure 1 A schematic structural diagram of the flexible clamping device shown in; Figure 3 for Figure 2 A schematic cross-sectional view of the flexible clamping device shown.

[0051] As shown in the figure, in a specific embodiment, the hemostatic clip provided by the present invention is an interventional surgical instrument used under a flexible endoscope, which can conveniently and quickly complete the flexible endoscope wound clipping and stop bleeding of the wound.

[0052] The hemostatic clip is in the form of an elongated line, and in the length direction, from front to back, it comprises a flexible clamping device 10, a flexible section 20 and a driving handle 30. The flexible clamping device 10 is located at the front end of the flexible section 20, and the driving handle 30 is located at the rear end of the flexible section 20. The flexible clamping device 10 is relatively short and can be released into human tissue after clamping the wound and stopping bleeding. The flexible section 20 is relatively long and has the flexibility to adapt to the endoscopic channel so that the flexible clamping device 10 can be delivered to the wound location in the body through the endoscope. The driving handle 30 is used for doctors to operate to control the hemostatic clip to perform the following various actions.

[0053] The continuum 11 of the flexible clamping device 10 forms its outer shell, and a clamping component and a shielding component are arranged inside the continuum 11. The whole continuum 11 can be made of stainless steel or a polymer material, such as PEEK.

[0054] Specifically, the clamping assembly is mainly composed of a connecting shaft 12 and a plurality of groups of clips 13 installed at intervals on the connecting shaft. The two clip bodies of each group of clips 13 are stored in the interior of the continuous body 11 in a form of elastic inward bending. The clip bodies of the plurality of groups of clips 13 are sequentially connected by connecting lines 14. The front end of the continuous body 11 is provided with a plurality of clip release grooves 111 and vertical grooves 112 corresponding to each group of clips on one side. The clip release grooves 111 are generally semicircular, and the vertical grooves 112 vertically penetrate all the clip release grooves 111. The shielding assembly is provided with The shielding sheet 15 is located on the inner side of the clip release groove 111, has a certain curvature, and its width is greater than the width of the vertical groove 112. The shielding sheet 15 can move in the axial direction to block or make way for at least part of the clip release groove 111. In the blocking position, the shielding sheet 15 limits the clip 13 inside the continuum 11. In the making way position, since the clip 13 is no longer restricted by the shielding sheet 15, the clip 13 can be unfolded from the bent state under the action of its own elastic force, and then pop out from the inside along the clip release groove 111.

[0055] Please refer to Figures 4 to 8 , Figure 4 It is a cross-sectional view when the shielding sheet shields all the clip release grooves; Figure 5 A cross-sectional view of the shielding sheet when part of the clip release slot is left open; Figure 6 is a schematic diagram of the structure of a clip body of the clip when it is in a bent state; Figure 7 is a schematic diagram of the structure of another clip body of the clip when it is in a bent state; Figure 8 It is a schematic diagram of the structure of a clip body of the clip when it is in an expanded state.

[0056] As shown in the figure, the continuous body 11 is a barrel-shaped structure as a whole, and a restraining groove 113 corresponding to the shielding piece 15 is provided on the inner wall thereof to guide the shielding piece 15 to move forward and backward along the axial direction.

[0057] The shielding piece 15 is tightly attached to the constraint groove 113 on the inner side of the continuum 11 under the elastic pressure of the clip 13, and can slide toward the rear end along the constraint groove 113 under the pulling force of the shielding driving tendon 41 to expose the clip release groove 111 and the vertical groove 112 for the clip 13 to extend.

[0058] A hook 131 is provided at the end of each group of clips 13, and a connecting wire constraint ring 132 is provided on the inner side close to the hook 131. The hook 131 and the connecting wire constraint ring 132 are structural features of the clip body; a driven gear base 133 is provided at the other end of the two clip bodies, and the driven gear base 133 and the clip body can be integrally formed, and an axial hole 1331 and a driven gear 1332 are provided thereon.

[0059] In the stowed state, the two clip bodies of the clip 13 are bent inwardly to form a semicircle, and in the popped-out state, the two clip bodies of the clip 13 are unfolded to form a slightly curved arc, and the driven gears 1332 of the two clip bodies are meshed. In this way, when one of the driven gears 1332 rotates, the other driven gear 1332 can rotate in the opposite direction, thereby opening or closing the two clip bodies.

[0060] Please refer to Figures 9 to 11 , Fig. 9 A schematic diagram of the structure in which the frontmost clip is ejected from the inside along the clip release groove; Fig.10 A schematic diagram of the structure of a connecting wire constraint ring in which the connecting wire passes through each group of clips in sequence along a continuous "S"-shaped path; Fig.11 It is a schematic diagram of the structure when all clips are fully popped out.

[0061] As shown in the figure, one end of the connecting wire 14 is connected to the connecting wire constraint ring 132 of the frontmost clip body, and the connecting wire 14 passes through the connecting wire constraint rings 132 of each group of clips 13 in sequence along a continuous "S" shaped path. The other end of the connecting wire 14 is connected to the cylindrical pin 16.

[0062] When the clip 13 pops out from the inside along the clip release groove 111 , the connection line 14 can move from the vertical groove 112 of the continuous body 11 to the outside of the continuous body 11 without interfering with the continuous body 11 .

[0063] The cylindrical pin 16 is arranged along the radial direction inside the continuum 11, and symmetrical long waist holes 114 are provided on both sides of the continuum 11. The connecting line 14 can slide along the long waist hole 114 with the cylindrical pin 16, so as to tighten the connecting line 14 and close the pop-up clip 13. Relative protrusions 1141 are provided on both sides of the rear end of the long waist hole 114. After the cylindrical pin 16 passes over the protrusion 1141, it is clamped by the protrusion 1141 to maintain the clamping state of the clip 13.

[0064] Please refer to further Figures 12 to 15 , Fig.12 is a schematic diagram of a continuum in a bent state; Fig.13 It is a schematic diagram of a structure in which a continuum is provided with a bending drive tendon; Fig.14 A cross-sectional view of a continuum provided with a bending-adjusting driving tendon; Fig.15 It is a cross-sectional schematic diagram of a continuum having a bending drive tendon constraint ring and a shielding plate constraint groove on the inner wall thereof.

[0065] As shown in the figure, the flexible clamping device 10 is also provided with a bending adjustment component, which is bent by a bending adjustment driving tendon 43; the continuum 11 is provided with a plurality of spaced hollow grooves 115 on the back side of the clip release groove 111, and the hollow grooves 115 are generally semicircular and are alternately staggered with the clip release grooves 111. By designing the hollow grooves 115 on one side of the continuum 11, the continuum 11 can have the elasticity to bend to one side, and a bending adjustment driving tendon constraint ring 116 is provided on the inner side of the continuum 11, and the bending adjustment driving tendon 43 passes through the bending adjustment driving tendon constraint ring 116 and is connected to the inner end of the continuum 11.

[0066] In this way, by pulling the bending drive tendon 43, a lateral force can be applied to the head end of the continuum 11, thereby adjusting the continuum 11 from a straight state to a bent state, so as to increase the flexibility of the flexible clamping device 10, so that it can better adapt to the actual shape of the wound, thereby stopping bleeding of the wound faster and better.

[0067] Please refer to further Figures 16 to 19 , Fig.16 It is a schematic diagram of the structure in which the driving gear of the clamping assembly is meshed with the driven gear of the clamping piece; Fig.17 for Fig.13 Schematic diagram of the internal structure after removing the continuum; Fig.18 It is a schematic diagram of the structure when the driving gear and the shielding piece move to the last clip; Fig.19 This is a schematic diagram of the structure when all the clips are fully closed.

[0068] As shown in the figure, the connecting shaft 12 in the continuum 11 is divided into a first connecting shaft 121 and a second connecting shaft 122. The two clip bodies of each group of clips 13 are rotatably installed on the first connecting shaft 121 and the second connecting shaft 122 through a driven gear base 133, respectively. Each driven gear base 133 has a shaft sleeve to maintain the distance between them.

[0069] An adjusting shaft 17 is also provided inside the continuum 11. The adjusting shaft 17 is parallel to the first connecting shaft 121 and the second connecting shaft 122 and can move in the axial direction. A driving gear 171 is provided thereon. The adjusting shaft 17 can move back and forth to enable the driving gear 171 to engage with the driven gear 1332 on the first connecting shaft 121 or the second connecting shaft 122, thereby selectively adjusting each group of clips 13 and driving different groups of clips 13 to open at different angles to adapt to different wound sizes.

[0070] For example, if the wound is olive-shaped with narrow ends and wide in the middle, the opening angles of the clips 13 at the two ends can be reduced and the opening angle of the clips 13 in the middle can be increased by adjusting the shaft 17 and the driving gear 171, so as to match the shape of the wound, and then clamp them at the same time. In this way, the consistency of clamping can be guaranteed to the greatest extent, so that the wound can achieve an ideal closing effect.

[0071] Please refer to Figure 20 to Figure 22 , Fig. 20 A schematic diagram of the structure for releasing the driving tendon and the connection between the card and the cylindrical pin; Fig.21 It is a schematic diagram of the structure of the release driving tendon, card, cylindrical pin and continuum; Fig. 22 It is a structural schematic diagram of the card being separated from the cylindrical pin.

[0072] As shown in the figure, the cylindrical pin 16 is connected to the release driving tendon 42 through the card 18. One end of the card 18 is connected to the release driving tendon 42. The other end of the card 18 is provided with a circular card interface 181, and is carded with the cylindrical pin 16 through the card interface 181. The number of cards 18 can be two. The two cards 18 are arranged side by side and are both carded with the cylindrical pin 16. After being fixed with the cylindrical pin 16, if the pulling force continues to be applied, the card interface 181 of the card 18 can be detached from the cylindrical pin 16.

[0073] When the flexible clamping device 10 needs to be released, the card 18 and the cylindrical pin 16 are dragged to slide along the long waist hole 114 by releasing the driving tendon 42. When the cylindrical pin 16 passes over the protrusion 1141 on the long waist hole 114, the cylindrical pin 16 is fixed at the end of the long waist hole 114. At this time, the clip 13 is in a tightened state. Continue to drag and release the driving tendon 42, and the cylindrical pin 16 falls off from the card interface 181 of the card 18, thereby realizing the release of the flexible clamping device 10.

[0074] Please refer to Fig.23 , Fig.24 , Fig.23 It is a schematic diagram of the structure of the driving handle; Fig.24 This is a schematic diagram of the structure when the bending adjustment knob and the clip adjustment knob are rotated outward.

[0075] As shown in the figure, the driving handle 30 includes a handle grip portion and a driving assembly, wherein the handle grip portion includes a main clamping ring 31 and a constraint rod 32, the main clamping ring 31 is located at the end of the constraint rod 32, and the driving assembly is divided into a shielding adjustment clamping ring 33, a clip operation clamping ring 34, a bending adjustment knob 35, and a clip adjustment knob 36.

[0076] Among them, the shielding adjustment snap ring 33 and the clip operation snap ring 34 are respectively located on the left and right sides of the constraint rod 32, and are respectively slidably matched with the constraint rod 32; the shielding adjustment snap ring 33 and the shielding sheet 15 are directly connected through the shielding driving tendon 41, and the shielding sheet 15 can be dragged toward the proximal end from the shielding sheet constraint groove 113 of the flexible clamping device 10 by pulling backward, thereby releasing the clip 13; the clip operation snap ring 34 is fixedly connected to the card 18 of the release component through the release driving tendon 42, and the clip 13 can be tightened by pulling backward, and the overall release of the flexible clamping device 10 can be achieved by continuing to pull.

[0077] The bending knob 35 is connected to the boss at the front end of the driving handle 30 through a thread, and its front end is fixedly connected to the bending driving tendon 43. The bending driving tendon 43 can be pulled by turning the knob to achieve the bending of the flexible clamping device 10.

[0078] The clip adjustment knob 36 is divided into a first clip adjustment knob 361 and a second clip adjustment knob 362, wherein the first clip adjustment knob 361 is connected to the adjustment shaft 17 and is threadedly matched with the boss at the front end of the driving handle 30, and the adjustment shaft 17 and the driving gear 171 can be driven to move in the axial direction by rotating the first clip adjustment knob 361; the second clip adjustment knob 362 is connected to the adjustment shaft 17 and is rotatably installed on the first clip adjustment knob 361, and the adjustment shaft 17 and the driving gear 171 can be driven to rotate by rotating the second clip adjustment knob 362, thereby driving different groups of clips 13 to open and close.

[0079] The above-mentioned connecting parts such as the shielding driving tendon 41 and the bending driving tendon 43 can be detached by using a structure similar to the releasing driving tendon 42 or other methods, so as to release the flexible clamping device 10 into the human body, which will not be repeated here.

[0080] The above is a detailed introduction to the hemostatic clip provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A hemostatic clip, characterized in that: The invention comprises a flexible clamping device, a flexible section and a driving handle, wherein one end of the flexible section is connected to the flexible clamping device, and the other end of the flexible section is connected to the driving handle; the flexible clamping device comprises a continuum and a clamping assembly and a shielding assembly located inside the continuum; the clamping assembly comprises a connecting shaft and a plurality of groups of clips installed on the connecting shaft at intervals, wherein two clip bodies of each group of clips are accommodated inside the continuum in a form of elastic inward bending, and the clip bodies of the plurality of groups of clips are connected in sequence by connecting lines, and the front end of the continuum is A plurality of clip release grooves and vertical grooves corresponding to each group of clips are provided on one side; the shielding assembly includes a shielding sheet, which is located on the inner side of the clip release groove, and the shielding sheet can be moved in the axial direction to block or clear at least part of the clip release groove. In the shielding position, the shielding sheet limits the clip to the inside of the continuum, and in the clearing position, the clip pops out from the inside along the clip release groove; the driving handle includes a handle grip and a driving assembly, and the driving assembly includes a clip operating component and a shielding operating component. The component, the clip operating component is used to drive the connecting line to move backward so that the clip is clamped, and the shielding operating component is connected to the shielding sheet to drive the shielding sheet to move; the ends of the two clip bodies of each group of the clips are respectively provided with hooks, and a connecting line constraint ring is provided on the inner side close to the hooks; one end of the connecting line is connected to the connecting line constraint ring of the clip body at the front end, and the connecting line passes through the connecting line constraint rings of each group of the clips in sequence along a continuous "S"-shaped path, and the other end of the connecting line is connected to a cylindrical pin, and the cylindrical pin can be moved axially backward along the continuum and positioned; the connecting shaft includes a first connecting shaft and a second connecting shaft, and the two clip bodies of each group of the clips are rotatably mounted on the first connecting shaft and the second connecting shaft through a driven gear base respectively; the clamping assembly includes a driving gear mounted on the adjusting shaft, and the adjusting shaft is parallel to the first connecting shaft and the second connecting shaft and can move in the axial direction, so that the driving gear selectively meshes with the driven gear of each group of the clips located on the first connecting shaft or the second connecting shaft.

2. The hemostatic clip according to claim 1, characterized in that: The cylindrical pin is arranged in the radial direction inside the continuum, and the continuum is provided with a long waist hole. The cylindrical pin can slide along the long waist hole and be positioned at the rear end.

3. The hemostatic clip according to claim 2, characterized in that: Two sides of the rear end of the long waist hole are provided with opposite protrusions, and the cylindrical pin is fixed by the protrusions after passing over the protrusions.

4. The hemostatic clip according to claim 3, characterized in that: The clip operating component is connected to the cylindrical pin through a release driving tendon and a card. One end of the card is connected to the release driving tendon, and the other end of the card is provided with a card interface and is clamped with the cylindrical pin through the card interface. When the pulling force continues to be applied after the cylindrical pin is clamped, the card interface can be detached from the cylindrical pin.

5. The hemostatic clip according to claim 4, characterized in that: The number of the cards is at least two, and the cards are arranged side by side and spaced apart and are both engaged with the cylindrical pins.

6. The hemostatic clip according to claim 5, characterized in that: The handle holding part includes a constraint rod and a main clamping ring located at the end of the constraint rod, the clip operating component includes a clip operating clamping ring that slides with the constraint rod, and the shielding operating component includes a shielding adjustment clamping ring that slides with the constraint rod. The clip operating clamping ring and the shielding adjustment clamping ring are respectively located on both sides of the constraint rod.

7. The hemostatic clip according to claim 1, characterized in that: The driving assembly includes a clip adjustment component, which is connected to the adjustment shaft to drive the adjustment shaft and the driving gear to move in the axial direction and drive the adjustment shaft and the driving gear to rotate after the movement.

8. The hemostatic clip according to claim 7, characterized in that: The clip adjustment component includes a first clip adjustment knob and a second clip adjustment knob; the first clip adjustment knob is connected to the adjustment shaft and is threadedly matched with the drive handle, and the adjustment shaft and the drive gear can be driven to move in the axial direction by rotating the first clip adjustment knob; the second clip adjustment knob is connected to the adjustment shaft and is rotatably installed on the first clip adjustment knob, and the adjustment shaft and the drive gear can be driven to rotate by rotating the second clip adjustment knob, thereby driving different groups of clips to open and close.

9. The hemostatic clip according to claim 1, characterized in that: The flexible clamping device includes a bending adjustment component, which includes a bending adjustment driving tendon; the continuum is provided with a plurality of hollow grooves on the back side of the clip release groove for enabling the continuum to bend, and the inner side of the continuum is provided with a bending adjustment driving tendon constraint ring, one end of the bending adjustment driving tendon is connected to the inner end portion of the continuum, and the other end of the bending adjustment driving tendon passes through the bending adjustment driving tendon constraint ring and is connected to the bending adjustment component of the driving handle, and the bending adjustment component is used to drive the continuum to bend through the bending adjustment driving tendon.

10. The hemostatic clip according to claim 9, characterized in that: The bending adjustment component includes a bending adjustment knob, which is connected to the bending adjustment driving tendon and threadably matched with the driving handle. The continuum can be driven to bend by rotating the bending adjustment knob.

11. The hemostatic clip according to any one of claims 1 to 10, characterized in that: The shielding operation component is connected to the shielding piece through a shielding driving tendon.

12. The hemostatic clip according to claim 11, characterized in that: The continuum is in a barrel-shaped structure as a whole, and a restraining groove corresponding to the shielding piece is provided on its inner wall to guide the shielding piece to move forward and backward along the axial direction.

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