Hemostatic clamp

Abstract

The utility model relates to the field of hemostatic clips, in particular to a hemostatic clip. Aiming at the technical problem that the existing hemostatic clip has defects, the utility model provides the hemostatic clip, a relatively simple separable mechanism is formed by matching and connecting a deformation hole and a connecting through hole with a ball head at the end part of a metal wire, and the clamping closing control and the separation control of a clamping piece are combined. And meanwhile, the clamping piece on the clamping piece and the limiting boss on the connecting seat also form a relatively simple clamping piece locking mechanism, so that the clamping piece can be conveniently locked after being closed. In a word, the hemostatic clip provided by the utility model is simple in structural design and low in processing and manufacturing cost, does not additionally drop parts or generate scraps in the stages of locking the clamping pieces and the like, can fully meet the requirements of clamping-closing operation, and ensures that no foreign matters are generated in the operation process.

Description

Technical Field

[0001] This utility model relates to the field of hemostatic clips, specifically to a hemostatic clip. Background Technology

[0002] With the development of endoscopic technology and other related technologies, endoscopic hemostasis has become the preferred treatment method for gastrointestinal bleeding. Commonly used endoscopic hemostasis methods include laser coagulation, electrocoagulation, local injection of hemostatic agents, drug spraying, and suture clipping. Among these, suture clipping has become the most effective and clinically valuable non-surgical treatment for gastrointestinal bleeding due to its minimal invasiveness, rapid hemostasis, low rebleeding rate, few complications, and definite efficacy.

[0003] Currently, hemostatic clips on the market are mainly divided into two types: sliding type and spring type. Both types of hemostatic clips consist of a clamp tube, a clamping plate, and a stop pin. However, the mechanisms for releasing the clamp head of existing hemostatic clips still have some shortcomings. For example, the structural design is complex, with many parts, resulting in high manufacturing difficulty and cost. Furthermore, when the clamp head is released, some parts may fall off or break. These fallen or broken parts can become foreign objects that affect the patient. The removal of these foreign objects can cause trouble and additional workload for medical staff, and the foreign objects themselves can also pose potential risks to the patient. Utility Model Content

[0004] To address the technical problems of existing hemostatic clips, this utility model provides a hemostatic clip that utilizes a deformation hole and a connecting through hole to connect with a ball head at the end of a metal wire, forming a relatively simple detachable mechanism that combines clamping and detachment control. Simultaneously, the snap-fit ​​element on the clip and the limiting protrusion on the connecting seat also constitute a relatively simple clip locking mechanism, allowing the clip to be easily locked after closure.

[0005] The technical solution provided by this utility model is as follows: a hemostatic clip, comprising a connecting seat, a metal wire, and two clips; the two clips intersect and are hinged to the connecting seat at the intersection; each clip has a deformation hole and a connecting through hole at its tail, the deformation hole and the connecting through hole communicating to form a three-way integral hole, so that the tail of the clip forms a first deformation wall and a second deformation wall; the connecting seat has a guide hole; the metal wire includes a first segment and a second segment, both of which pass through the guide hole; the ends of both the first segment and the second segment are fixedly provided with ball heads; the diameter of the ball head is larger than the through-hole diameter and smaller than the diameter of the ball head. The deformation hole is sized as described above; the first segment and the second segment respectively penetrate the connecting through holes on the two clamping pieces, and the ball head is located inside the deformation hole; a snap-fit ​​element is provided on the clamping piece near the deformation hole, and a locking part is provided on the connecting seat to restrict the movement of the snap-fit ​​element. The two locking parts corresponding to the two clamping pieces are centrally symmetrically arranged on the connecting seat; the locking part includes a release groove and a locking groove, which are separated by a limiting boss. The side of the limiting boss facing the release groove is the non-limiting side, and the side of the limiting boss facing the locking groove is the limiting side. The snap-fit ​​element is used to abut against the non-limiting side and the limiting side.

[0006] Optionally, the clip includes a clamping arm, wherein for any one of the clips, the head end of the clamping arm is tilted toward the side where the clamping arm is located on the other clip.

[0007] Optionally, the diameter of the guide hole is greater than or equal to the sum of the diameters of the ball heads.

[0008] Optionally, there is a length difference ΔL between the first segment and the second segment, wherein ΔL is greater than or equal to the diameter of the ball head.

[0009] Optionally, the distance between the deformation hole on one of the clips and the intersection of the clips is c1, and the distance between the deformation hole on the other clip and the intersection of the two clips is c2, satisfying c1≠c2.

[0010] Optionally, the movement path of the latching member within the release groove is projected onto the plane of the release groove to form region P1. Region P1 forms boundaries M1 and M2 along the axial direction of the connecting seat. The distance between boundaries M1 and M2 is dm1, and the width of the release groove is d1, satisfying d1≥dm1. The movement path of the latching member within the locking groove is projected onto the plane of the locking groove to form region P2. Region P2 forms boundaries M3 and M4 along the axial direction of the connecting seat. The distance between boundaries M3 and M4 is dm2, and the width of the locking groove is d2, satisfying d2≤dm2.

[0011] Optionally, the snap-fit ​​component is a three-dimensional boss, and the three-dimensional boss is provided with a guide surface, which is used to abut against the non-restricting side of the limiting boss.

[0012] Optionally, the connecting seat and the clamp are made of non-magnetic elastic material or non-magnetic absorbable material.

[0013] Optionally, it further includes a swivel seat, a first swivel, a second swivel, and a hook; the swivel seat is located on one side of the connecting seat, and a limit block is fixedly provided on the swivel seat; the first swivel is located inside the swivel seat, and both ends of the first swivel abut against the limit block respectively; the outer wall of the second swivel is fixedly connected to the inner wall of the first swivel, an extension boss is fixedly provided on the second swivel, a first release hole is provided on the extension boss, a second release hole is provided on the connecting seat, and a hook is fixedly provided at the end of the hook, the hook passing through the first release hole and inserting into the second release hole.

[0014] Optionally, it also includes a handle, a sliding handle, a rotating wheel, and a spindle; the end of the handle is provided with a finger ring, and the hook is provided with a through hole; the sliding handle is slidably disposed on the handle, one end of the spindle is fixedly connected to the sliding handle through a fixing tube, and the other end of the spindle passes through the through hole and is fixedly connected to the metal wire through a connecting tube; the rotating wheel is rotatably connected to the handle, and a flat part is provided inside the rotating wheel, through which the spindle passes and is engaged with the flat part through a guide tube.

[0015] Beneficial effects

[0016] Compared with existing technologies, the technical solution provided by this utility model has the following advantages: Addressing the technical problems of defects in existing hemostatic clips, this utility model proposes a hemostatic clip that utilizes deformation holes and connecting through holes to connect with the ball head at the end of the metal wire, forming a relatively simple detachable mechanism that combines clamping and detachment control. Simultaneously, the snap-fit ​​element on the clip and the limiting boss on the connecting seat also constitute a relatively simple clip locking mechanism, allowing the clip to be easily locked after closure. In summary, the hemostatic clip proposed by this utility model has a simple structural design, low manufacturing cost, and does not produce additional parts or debris during the clip locking stage, fully meeting the requirements of the clamping method operation and ensuring no foreign objects are generated during the operation. Attached Figure Description

[0017] Figure 1 This is one of the structural schematic diagrams of the hemostatic clip head proposed in the embodiments of this utility model.

[0018] Figure 2 This is the second schematic diagram of the hemostatic clip head proposed in the embodiment of this utility model.

[0019] Figure 3 This is the third schematic diagram of the hemostatic clip head proposed in the embodiment of this utility model.

[0020] Figure 4 This is the fourth schematic diagram of the hemostatic clip head proposed in the embodiment of this utility model.

[0021] Figure 5 This is the fifth schematic diagram of the hemostatic clip head proposed in the embodiment of this utility model.

[0022] Figure 6 for Figure 5 Enlarged diagram of point A in the middle.

[0023] Figure 7 This is a schematic diagram of the connecting seat proposed in an embodiment of the present utility model.

[0024] Figure 8 This is a cross-sectional schematic diagram of the connector proposed in an embodiment of the present utility model.

[0025] Figure 9 This is one of the structural schematic diagrams of the clip proposed in the embodiments of this utility model.

[0026] Figure 10 This is the second schematic diagram of the clip structure proposed in the embodiment of this utility model.

[0027] Figure 11 This is the third schematic diagram of the clip structure proposed in the embodiment of this utility model.

[0028] Figure 12 The fourth schematic diagram of the clip structure proposed in this embodiment of the utility model.

[0029] Figure 13 for Figure 12 Enlarged diagram of point B in the middle.

[0030] Figure 14 This is a schematic diagram of the structure of the first rotating ring proposed in an embodiment of the present invention.

[0031] Figure 15 This is a schematic diagram of the structure of the second rotating ring proposed in an embodiment of the present invention.

[0032] Figure 16 This is a schematic diagram of the hook structure proposed in an embodiment of the present utility model.

[0033] Figure 17 This is a schematic diagram of the overall structure of the hemostatic clip proposed in the embodiment of this utility model.

[0034] Figure 18 This is one of the working schematic diagrams of the hemostatic clip proposed in the embodiments of this utility model.

[0035] Figure 19 This is the second schematic diagram of the working of the hemostatic clip proposed in the embodiment of this utility model. Detailed Implementation

[0036] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.

[0037] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings. The terms "first," "second," etc., used in this utility model are provided for the convenience of describing the technical solution of the utility model and have no specific limiting effect; they are all general terms and do not constitute a limitation on the technical solution of the utility model. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Multiple technical solutions in the same embodiment, as well as multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not contradict or conflict, all of which are within the scope of protection claimed by this utility model.

[0038] Example 1

[0039] Combined with appendix Figure 1 To be continued Figure 13This embodiment proposes a hemostatic clip, including a connecting seat 1, a metal wire, and two clips 3. The two clips 3 intersect and are hinged to the connecting seat 1 at the intersection. The tail of the clip 3 is provided with a deformation hole 31 and a connecting through hole 32. The deformation hole 31 and the connecting through hole 32 are connected to form a three-way integral hole, so that the tail of the clip 3 forms a first deformation wall 33 and a second deformation wall 34.

[0040] The connector 1 is provided with a guide hole 11. The metal wire includes a first segment 21 and a second segment 22. Both the first segment 21 and the second segment 22 pass through the guide hole 11. The ends of the first segment 21 and the second segment 22 are fixedly provided with ball heads 23. The diameter of the ball head 23 is larger than the through size of the connecting through hole 32 and smaller than the size of the deformation hole 31. The first segment 21 and the second segment 22 respectively pass through the connecting through holes 32 on the two clamps 3, and the ball head 23 is located in the deformation hole 31.

[0041] A snap-fit ​​element 30 is provided on the clamping piece 3 near the deformation hole 31. A locking part is provided on the connecting seat 1 to restrict the movement of the snap-fit ​​element 30. The two locking parts corresponding to the two clamping pieces 3 are centrally symmetrically arranged on the connecting seat 1. The locking part includes a release groove 14 and a locking groove 13. The release groove 14 and the locking groove 13 are separated by a limiting boss 10. The side of the limiting boss 10 facing the release groove 14 is the non-limiting side 101, and the side of the limiting boss 10 facing the locking groove 13 is the limiting side 102. The snap-fit ​​element 30 is used to abut against the non-limiting side 101 and the limiting side 102.

[0042] The hemostatic clip of this embodiment can perform three operations: opening and closing the clip 3, locking the clip 3 after it is closed, and disengaging the clip 3 from the metal wire after it is locked. The disengagement of the metal wire from the clip 3 is necessary to ensure that the connecting seat 1 and the locked clip 3 remain inside the body to maintain clamping of the lesion, and is a necessary operation for hemostasis using the clamping method. The above three operations are achieved by pulling on the metal wire; the principle of pulling the metal wire can be referenced from the relevant structure in conventional hemostatic clips.

[0043] The working principle of the opening and closing process of the clamp 3 is as follows: When the metal wire is pushed or pulled, since the diameter of the ball head 23 is larger than the through size of the connecting through hole 32, the ball head 23 will not directly disengage from the connecting through hole 32, but will drive the clamps 3 on both sides to rotate, thereby realizing the opening and closing of the clamp 3.

[0044] When locking of clip 3 after closure is not required, the fully closed state of clip 3 is the state in which the latch 30 slides into the release groove 14 from the outside until it abuts against the non-restricting side 101 of the limiting boss 10. When clip 3 is in the fully closed state, maintaining this state allows clip 3 and connecting seat 1, among other parts, to be easily inserted into the endoscope channel. Furthermore, once clip 3 and other parts are advanced along the endoscope channel to the vicinity of the lesion, pulling the metal wire can reopen or close clip 3, thereby clamping the lesion.

[0045] Obviously, during the opening and closing process of the clip 3, the movement of the clip 3 ends when the snap fastener 30 abuts against the non-restricted side 101 of the limiting boss 10. That is, the snap fastener 30 on the clip 3 can freely slide into the release groove 14 or freely slide out of the release groove 14. At this time, the clip 3 is not locked.

[0046] After the clamping operation on the lesion is completed, the clamp 3, which is in the closed state, can be locked. As explained above, when the clamp 3 is fully closed, the locking member 30 on the clamp 3 is already in contact with the non-restricting side 101 on the limiting boss 10. When it is necessary to lock the clamp 3, continue pulling the wire, and the locking member 30 on the clamp 3 will pass over the limiting boss 10 and enter the locking groove 13. At this time, the locking member 30 will be blocked by the limiting side 102 on the limiting boss 10 and cannot swing back. The inability of the clamp 3 to swing back means that the clamp 3 cannot be reopened and can only remain closed, thus achieving the locking of the closed state of the clamp 3.

[0047] In optional embodiments, the snap-fit ​​member 30 can be various types of boss structures, such as spherical or hemispherical protrusions, or it can be a buckle, barb, or other structure that engages with the limiting boss 10. It is understandable that since the snap-fit ​​member 30 is provided at the tail of the clamping piece 3, the snap-fit ​​member 30 may interfere with the base 1 when the clamping piece 3 swings. The first groove 14 and the second groove 13 are designed to provide accommodating space for the snap-fit ​​member 30, preventing interference between the snap-fit ​​member 30 and the base 1. The widths of the first groove 14 and the second groove 13 can be equal or unequal.

[0048] Therefore, the hemostatic clip proposed in this embodiment achieves locking of the clip 3 in the clamped state by setting a locking member 30 at the tail of the clip 3 and setting a limiting protrusion 10 on the movement path of the locking member 30, so as to limit the locking member 30 through the limiting protrusion 10. This method is simple to operate, has a good clamping effect, does not generate additional foreign objects, and will not cause trouble for patients and medical staff.

[0049] The separation of clip 3 from the metal wire occurs after clip 3 is locked. The working principle of this separation process is as follows: When clip 3 is in the locked state, continuing to pull the metal wire causes the ball heads 23 on the first segment 21 and the second segment 22 to continue applying force to the first deformable wall 33 and the second deformable wall 34. The first deformable wall 33 and the second deformable wall 34 continue to deform until the through-hole 32 is larger than the diameter of the ball head 23. The ball head 23 is then pulled out, and the metal wire separates from clip 3. Subsequently, the metal wire passes through the guide hole 11 and leaves the connecting seat 1 along with the rest of the hemostatic clip, while clip 3 and connecting seat 1 remain in the body to ensure the closure of the lesion.

[0050] Based on the above description, it can be seen that the hemostatic clip of this embodiment improves the structure of the clip 3. A deformation hole 31 and a connecting through hole 32 are formed at the tail of the clip 3. The deformation hole 31 and the connecting through hole 32 are used to connect with the ball head 23 at the end of the metal wire. That is, through a simple mating structure, the clamping and locking control and the release control of the clip 3 are combined, which reduces the complexity of the movement of the metal wire and improves the ease of operation of the hemostatic clip.

[0051] Furthermore, in this embodiment, the deformation hole 31 and the connecting through hole 32 are designed as an integral three-way hole, which can not only avoid the impact on the strength of the clamping piece 3 due to the opening of multiple holes, and prevent the clamping piece 3 from deforming or even being damaged during use, but also ensure that the first deformation wall 33 and the second deformation wall 34 have sufficient deformation to meet the locking action of the clamping piece 3 and the disengagement action of the metal wire from the clamping piece 3.

[0052] Furthermore, this integrated hole structure can greatly reduce the processing difficulty, eliminating the need to consider the relative positioning relationship between the deformation hole 31 and the connecting through hole 32, and greatly reducing the precision requirements for design and manufacturing.

[0053] Furthermore, this technical solution does not generate foreign objects such as debris, avoiding potential uncertainties caused by foreign objects remaining in the patient's body, and also avoiding additional foreign object removal operations during surgery. It should be noted that the foreign object here refers to the foreign object generated due to the detachment of the clip 3 from the metal wire (there is no foreign object in this embodiment), but the clip 3 and the connecting seat 1 will still remain in the human body to ensure the closure of the lesion wound, which is a necessary operation of the hemostatic clip closure method treatment.

[0054] As explained above, clip 3 and connecting seat 1 need to be advanced along the endoscopic forceps channel to the vicinity of the lesion. Even when clip 3 is fully closed, the width of its end may still be too large to be easily inserted into the endoscopic forceps channel. Therefore, in conjunction with the attached... Figure 9In an improved embodiment, and further in another embodiment, the clip 3 includes a clamping arm 35, wherein the head end of the clamping arm 35 on any clip 3 is inclined toward the side where the clamping arm 35 on the other clip 3 is located. In this case, when the clip 3 is in a fully closed state, the width of its end is greatly reduced, thereby facilitating the insertion of the clip 3 and the connecting seat 1 into the endoscope channel. In a preferred embodiment, the inclination angle A of the clamping arm 35 is 0° to 30°.

[0055] As explained above, the metal wire will eventually pass through the guide hole 11 and leave the connector 1. However, due to the presence of the ball head 23, it may interfere with the inner wall of the guide hole 11, causing the metal wire to detach unsmoothly. Therefore, in an improved embodiment, the diameter of the guide hole 11 is greater than or equal to the sum of the diameters of the ball heads 23. In this case, the ball heads 23 located on the first segment 21 and the second segment 22 can pass through the guide hole 11 simultaneously, avoiding jamming.

[0056] Furthermore, in another improved embodiment, there is a length difference ΔL between the first segment 21 and the second segment 22, where ΔL is greater than or equal to the diameter of the ball head 23. Therefore, the ball heads 23 of the first segment 21 and the second segment 22 will be staggered, and will not pass through the guide hole 11 simultaneously, but rather in sequence, thereby preventing the ball head 23 from getting stuck in the guide hole 11.

[0057] As explained above, the opening and closing of the clamp 3 is achieved by the ball head 23 applying force to the inner wall of the deformation hole 31. In the aforementioned embodiment, there is a length difference between the first segment 21 and the second segment 22. However, if the position of the deformation hole 31 is not adjusted, it may affect the control of the opening and closing of the clamp 3. Therefore, in conjunction with the attached... Figure 1 In a further embodiment, the distance between the deformation hole 31 on one clip 3 and the intersection of the clip 3 is c1, and the distance between the deformation hole 31 on the other clip 3 and the intersection of the two clips 3 is c2, satisfying c1≠c2. This allows the position of the deformation hole 31 to adapt to the different lengths of the first segment 21 and the second segment 22, so that the control of opening and closing the clip 3 remains precise.

[0058] Regarding the locking design of clip 3 after clamping, combined with the attached... Figure 4 In a preferred embodiment, the movement path of the snap-fit ​​member 30 in the release groove 14 is projected onto the plane where the release groove 14 is located to form a region P1. The region P1 forms a boundary M1 and a boundary M2 along the axial direction of the connecting seat 1. The distance between the boundary M1 and the boundary M2 is dm1, and the width of the release groove 14 is d1, satisfying d1≥dm1.

[0059] The movement path of the snap-fit ​​30 in the locking groove 13 is projected onto the plane where the locking groove 13 is located to form a region P2. Region P2 forms a boundary M3 and a boundary M4 along the axial direction of the connecting seat 1. The distance between the boundary M3 and the boundary M4 is dm2, and the width of the locking groove 13 is d2, which satisfies d2≤dm2.

[0060] Based on the aforementioned principle, it can be known that when the clamp 3 is closed, the latching member 30 at the tail of the clamp 3 will move from the outside of the release groove 14 toward the non-restricted side 101 of the limiting boss 10. When the clamp 3 is open, it will move from the non-restricted side 101 of the limiting boss 10 along the release groove 14 to the outside. Therefore, it is necessary to avoid interference between the inner wall of the release groove 14 and the latching member 30. Thus, the width of the release groove 14 needs to be relatively wide, that is, it needs to satisfy d1≥dm1.

[0061] The locking groove 13 needs to restrict the movement of the snap-fit ​​30. The restriction of the movement of the snap-fit ​​30 is achieved by the inner wall of the locking groove 13 and the limiting boss 10 abutting against the snap-fit ​​30. Therefore, the width of the locking groove 13 is relatively narrow, satisfying d2≤dm2. Specifically, the size of the locking groove 13 can be designed so that the snap-fit ​​30 can slide in just right without excessive sliding.

[0062] And, in conjunction with the appendix Figure 11 and attached Figure 12 In another preferred embodiment, the snap-fit ​​member 30 is a three-dimensional boss with a guide surface 120. The guide surface 120 is used to abut against the non-restricted side 101 of the limiting boss 10. In this way, the guide surface 120 is generally inclined or curved. The guide surface 120 on the three-dimensional boss can play a guiding role, so that the snap-fit ​​member 30 can more easily pass over the limiting boss 10 from the non-restricted side 101 and fall into the locking groove 13.

[0063] For hemostasis using the clipping method, after the wound is clamped, the clip 3 and connector 1 remain inside the body. However, current hemostatic clips often use stainless steel or other metals for the clip 3 and connector 1, which may result in the clip 3 or connector 1 being magnetic. This could prevent patients who have undergone endoscopic minimally invasive treatment from undergoing MRI scans for a short period or from passing security checks. Therefore, in a preferred embodiment, both the clip 3 and connector 1 are made of non-magnetic elastic materials or non-magnetic absorbable materials. These include pure titanium, magnesium alloy, zinc alloy, polylactic acid, polyglycolic acid, polyglycolic acid, polyglycolic acid-trimethylene carbonate, polyetheretherketone, polyamide, polyoxymethylene, ultra-high molecular weight polyethylene, and polycarbonate. In a preferred embodiment, pure titanium or polyetheretherketone can be selected as needed. This ensures that the clip 3 and connector 1 remain inside the body while still allowing for MRI scans, meaning it does not affect the patient's MRI examination or security checks.

[0064] Example 2

[0065] Combined with appendix Figure 14 To be continued Figure 16 This embodiment of the hemostatic clip, compared with the technical solution of embodiment 1, can be improved as follows: it further includes a rotating seat 4, a first rotating ring 5, a second rotating ring 6, and a hook 7. The rotating seat 4 is located on one side of the connecting seat 1, and a limiting block 40 is fixedly provided on the rotating seat 4. The first rotating ring 5 is located inside the rotating seat 4, and both ends of the first rotating ring 5 abut against the limiting block 40 respectively. The outer wall of the second rotating ring 6 is fixedly connected to the inner wall of the first rotating ring 5. An extension boss 60 is fixedly provided on the second rotating ring 6, and a first release hole 61 is provided on the extension boss 60. A second release hole 12 is provided on the connecting seat 1. A hanging claw 71 is fixedly provided at the end of the hook 7, and the hanging claw 71 passes through the first release hole 61 and is inserted into the second release hole 12.

[0066] Example 1 achieves the separation of the metal wire from the clip 3, but the clip 3 and the connecting seat 1 are only part of the hemostatic clip. There are still other connections between the connecting seat 1 and the rest of the hemostatic clip. This example designs a connection structure between the connecting seat 1 and the rest of the hemostatic clip to ensure that the connecting seat 1 and the clip 3 can be completely released.

[0067] Based on the structural description of this embodiment, the principle by which the connecting seat 1 connects and disconnects from the rest of the hemostatic clip is as follows: the rotating ring seat 4 assembles the first rotating ring 5 inside it through the limiting block 40, but still ensures that the first rotating ring 5 can rotate. The inner wall of the first rotating ring 5 and the outer wall of the second rotating ring 6 are fixedly connected by welding or bonding, or the two are integrally formed. The claw 71 on the hook 7 passes through the first release hole 61 on the extension boss 60 and the second release hole 12 on the connecting seat 1, realizing the connection between the second rotating ring 6 and the connecting seat 1.

[0068] The release process of the connecting seat 1 occurs after the metal wire separates from the clip 3. After the metal wire separates from the clip 3, it continues to move axially until it abuts against the hook 7 and exerts a force on the hook 7. This force causes the claw 71 to disengage from the second release hole 12 on the connecting seat 1. Obviously, since the connecting seat 1 is connected only by the cooperation of the first release hole 61 and the second release hole 12 with the claw 71, when the claw 71 disengages from the second release hole 12, the connecting seat 1 and its clip 3 and other structures can be released, thus remaining in the body to keep the wound closed. The swivel seat 4, the first swivel 5, the second swivel 6, and the hook 7 below the connecting seat 1 can all leave the body along with the rest of the hemostatic clamp.

[0069] Combined with appendix Figure 17In a further embodiment, the hemostatic clip also includes a handle 80, a sliding handle 81, a rotating wheel 82, and a spindle 83; a finger ring 84 is provided at the end of the handle 80. The sliding handle 81 is slidably disposed on the handle 80. One end of the spindle 83 is fixedly connected to the sliding handle 81 through a fixing tube 85, and the other end of the spindle 83 passes through a through hole 72 and is fixedly connected to a metal wire through a connecting tube 86. The rotating wheel 82 is rotatably connected to the handle 80. A flat section is provided inside the rotating wheel 82, and the spindle 83 passes through the flat section and is engaged with the flat section through a conduit 87.

[0070] In this embodiment, the sliding handle 81 and spindle 83, along with other related structures, constitute a traction mechanism capable of pulling the metal wire. Specifically, the sliding of the sliding handle 81 relative to the handle 80 drives the metal wire axially via the spindle 83, enabling the opening, closing, locking, and release of the clamp 3. The rotating wheel 82, through its internal flat portion engaging with the spindle 83, transmits its rotation to the clamp 3, thereby controlling the rotation of the clamp 3. The finger ring 84 at the end of the handle 80 enhances the ease of operation of the hemostatic clip, accommodating various gripping methods.

[0071] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited to this. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A hemostatic clip, characterized in that, Includes a connector (1), a metal wire, and two clips (3); The two clamping pieces (3) intersect and are hinged to the connecting seat (1) at the intersection. The tail of the clamping piece (3) is provided with a deformation hole (31) and a connecting through hole (32). The deformation hole (31) and the connecting through hole (32) are connected to form a three-way integrated hole, so that the tail of the clamping piece (3) forms a first deformation wall (33) and a second deformation wall (34). The connecting seat (1) is provided with a guide hole (11). The metal wire includes a first segment (21) and a second segment (22). Both the first segment (21) and the second segment (22) pass through the guide hole (11). A ball head (23) is fixedly provided at the end of both the first segment (21) and the second segment (22). The diameter of the ball head (23) is larger than the through size of the connecting through hole (32), and the diameter of the ball head (23) is smaller than the size of the deformation hole (31). The first segment (21) and the second segment (22) respectively pass through the connecting through holes (32) on the two clips (3). The ball head (23) is located in the deformation hole (31). A snap-fit ​​member (30) is provided on the clamping piece (3) near the deformation hole (31), and a locking part is provided on the connecting seat (1) to restrict the movement of the snap-fit ​​member (30). The two locking parts corresponding to the two clamping pieces (3) are centrally symmetrically arranged on the connecting seat (1). The locking part includes a release groove (14) and a locking groove (13), which are separated by a limiting boss (10). The side of the limiting boss (10) facing the release groove (14) is the non-limiting side (101), and the side of the limiting boss (10) facing the locking groove (13) is the limiting side (102). The snap-fit ​​member (30) is used to abut against the non-limiting side (101) and the limiting side (102).

2. A haemostatic clamp according to claim 1, wherein, The clip (3) includes a clip arm (35), and for any clip (3), the head end of the clip arm (35) is inclined toward the side where the clip arm (35) is located on the other clip (3).

3. The hemostatic clip of claim 1, wherein, The diameter of the guide hole (11) is greater than or equal to the sum of the diameters of the ball head (23).

4. The hemostatic clip of claim 1, wherein, There is a length difference ΔL between the first segment (21) and the second segment (22), and the ΔL is greater than or equal to the diameter of the ball head (23).

5. A haemostatic clamp according to claim 4, wherein, The distance between the deformation hole (31) on one of the clips (3) and the intersection of the clips (3) is c1, and the distance between the deformation hole (31) on the other clip (3) and the intersection of the two clips (3) is c2, satisfying c1≠c2.

6. The hemostatic clip of claim 1, wherein, The movement path of the snap-fit ​​(30) in the release groove (14) is projected onto the plane where the release groove (14) is located to form a region P1. The region P1 forms a boundary M1 and a boundary M2 along the axial direction of the connecting seat (1). The distance between the boundary M1 and the boundary M2 is dm1. The width of the release groove (14) is d1, which satisfies d1≥dm1. The movement path of the snap-fit ​​member (30) in the locking groove (13) is projected onto the plane where the locking groove (13) is located to form a region P2. The region P2 forms a boundary M3 and a boundary M4 along the axial direction of the connecting seat (1). The distance between the boundary M3 and the boundary M4 is dm2. The width of the locking groove (13) is d2, which satisfies d2≤dm2.

7. The hemostatic clip of claim 1, wherein, The snap-fit ​​member (30) is a three-dimensional boss, and a guide surface (120) is provided on the three-dimensional boss. The guide surface (120) is used to abut against the non-restricting side (101) of the limiting boss (10).

8. The hemostatic clip of claim 1, wherein, The connecting seat (1) and the clamp (3) are made of non-magnetic elastic material or non-magnetic absorbable material.

9. The hemostatic clip of claim 1, wherein, It also includes a swivel base (4), a first swivel (5), a second swivel (6), and a hook (7); The rotating seat (4) is located on one side of the connecting seat (1). A limiting block (40) is fixedly provided on the rotating seat (4). The first rotating ring (5) is located inside the rotating seat (4), and the two ends of the first rotating ring (5) abut against the limiting block (40) respectively. The outer wall of the second rotating ring (6) is fixedly connected to the inner wall of the first rotating ring (5). An extension boss (60) is fixedly provided on the second rotating ring (6). A first release hole (61) is provided on the extension boss (60). A second release hole (12) is provided on the connecting seat (1). A hanging claw (71) is fixedly provided at the end of the hook (7). The hanging claw (71) passes through the first release hole (61) and is inserted into the second release hole (12).

10. A haemostatic clamp according to claim 9, wherein, It also includes a handle (80), a sliding handle (81), a rotating wheel (82), and a spindle (83); the end of the handle (80) is provided with a finger ring (84), and the hook (7) is provided with a through hole (72); The sliding handle (81) is slidably disposed on the handle (80). One end of the spindle (83) is fixedly connected to the sliding handle (81) through the fixing tube (85), and the other end of the spindle (83) passes through the through hole (72) and is fixedly connected to the metal wire through the connecting tube (86). The rotating wheel (82) is rotatably connected to the handle (80). A flat part is provided inside the rotating wheel (82). The spindle (83) passes through the flat part and is engaged with the flat part through a conduit (87).

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