Chuck mechanism and hemostatic clip

Abstract

The invention relates to the technical field of hemostatic clips, in particular to a chuck mechanism and a hemostatic clip. Aiming at the technical problem that an existing hemostatic clip has defects, the invention provides the chuck mechanism and the hemostatic clip, the structure of a clamping piece is improved, a deformation hole and a connecting through hole which are combined into a whole are formed in the tail part of the clamping piece, and the deformation hole and the connecting through hole are matched and connected with a ball head at the end part of a metal wire, that is, through a single matching structure, the clamping piece is matched with the metal wire; according to the hemostatic clip, clamping control and separation control of the clamping pieces are combined, so that the complexity of movement of the metal wire is reduced, the operability of the hemostatic clip is improved, and mutual influence of clamping operation and separation operation of the clamping pieces in an operation can be avoided. Moreover, according to the technical scheme, foreign matters such as chippings cannot be generated, potential uncertain factors caused by the fact that the foreign matters are left in the body of the patient are avoided, and additional foreign matter taking-out operation generated in an operation is also avoided.

Description

Technical Field

[0001] The invention relates to the technical field of hemostatic clips, and in particular to a clamp mechanism and a hemostatic clip. Background Art

[0002] With the development of endoscopic technology and other related technologies, endoscopic hemostasis has become the preferred treatment for gastrointestinal bleeding. Currently, the commonly used endoscopic hemostasis methods include laser coagulation, electrocoagulation, local injection of drug hemostasis, drug spraying, and suture clip closure. Among them, hemostatic clip closure has become an effective and clinically valuable non-surgical treatment for gastrointestinal bleeding due to its low trauma, fast hemostasis, low incidence of rebleeding, few complications, and definite efficacy.

[0003] The hemostatic clips currently available on the market are mainly divided into two types: the slide type and the spring type. Both types of hemostatic clips are composed of a clamp tube, a clamping piece, and a stop pin. However, the current structural design of the hemostatic clip does not achieve a good integration of the clamping operation and the detaching operation. The structure for the clamping operation and the structure for the detaching operation often affect each other, leading to misoperation during surgery.

[0004] For example, the technical solution with publication number CN118356226A discloses "a clamp assembly and hemostatic clamp for use with an endoscope". In this technical solution, the first hook claw on the first hook cooperates with the first hook mounting hole, tear groove and release platform deformation hole on the clip to realize the driving action of the first hook on the clip and the separation action of the first hook from the clip. In this way, the first hook claw needs to be connected to the first hook mounting hole first, and then the tear groove is destroyed, so that the first hook mounting hole and the release platform deformation hole are connected, so that the first hook claw has enough space to separate.

[0005] However, in this design, the first hook claw needs to control the clamping of the clip when it is not disengaged, and needs to destroy the tear groove and slide into the deformation hole of the release hanger when it is disengaged. This makes the movement behavior of the first hook complex, which is reflected in the surgical operation. It is difficult to control and can easily lead to misoperation by the surgical operator. In addition, this method requires that two through holes, the first hook mounting hole and the release hanger deformation hole, be set on the first hook with a very small size. This greatly reduces the strength of the tail of the clip. Although a tear groove is initially set between the first hook mounting hole and the release hanger deformation hole, the tear groove itself has low structural strength to ensure the tearing effect, and it cannot ensure the strength of the tail of the clip, which can easily cause the clip to deform or even be damaged during use, thereby affecting the surgical operation. In addition, this structural form will also increase the difficulty of the process and the cost.

[0006] Including the hemostatic clips listed above, the existing hemostatic clips have other defects, namely, the generation of fragments and too many parts remaining in the human body after the clamp is released. This causes certain troubles for medical staff who use hemostatic clips to suture wounds, and medical staff are required to perform additional work to remove fragments and foreign bodies. The generation of fragments will increase the workload of medical staff and also increase the surgical costs of patients. Sometimes, due to the patient's digestive peristalsis, the fragments have already shifted with the peristalsis of the patient's digestive tract before they are removed. Some debris cannot be completely removed and remain in the patient's body, which will cause potential uncertainties. Summary of the invention

[0007] In view of the technical problems of defects in existing hemostatic clips, the present invention provides a clamp mechanism and a hemostatic clip, which improves the structure of the clip, opens a deformation hole and a connecting through hole that are integrated into one at the tail of the clip, and uses the deformation hole and the connecting through hole to match and connect with the ball head at the end of the metal wire, that is, through a single matching structure, the clamping control and the disengagement control of the clip are combined, which reduces the complexity of the metal wire movement, improves the operability of the hemostatic clip, and can avoid the clamping operation and the disengagement operation of the clip from affecting each other during surgery. In addition, the technical solution will not produce foreign matter such as debris, avoids the potential uncertainties caused by foreign matter remaining in the patient's body, and also avoids additional foreign matter removal operations during surgery.

[0008] The technical solution provided by the present invention is: a clamping mechanism, including a connecting seat, a metal wire and two clamping pieces; the two clamping pieces intersect and are hinged to the connecting seat at the intersection, the clamping piece includes a clamping arm, a clamping tooth is fixedly provided on the clamping arm, a clamping boss is fixedly provided at the end of the clamping arm, and the clamping arm is inclined toward the side where the clamping tooth is located; a hanging platform is fixedly provided at the tail of the clamping piece, and locking platforms are provided on both sides of the connecting seat, and the hanging platform is used to be clamped with the locking platform; the clamping piece is provided with a deformation hole and a connecting through hole near the hanging platform, and the deformation hole and the connecting through hole are connected. An integrated hole in the form of a three-way connection is connected to form a first deformation wall and a second deformation wall near the tail of the clip near the hanging platform; a guide hole is provided on the connecting seat, and the metal wire passes through the guide hole, and the metal wire includes a first segment and a second segment, and the ends of the first segment and the second segment are fixedly provided with ball heads; the diameter of the ball head is larger than the passing size of the connecting through hole, and the diameter of the ball head is smaller than the passing size of the deformation hole; the first segment and the second segment respectively pass through the connecting through holes on the two clips, and the ball head is located in the deformation hole.

[0009] Optionally, the inclination angle A of the clamping arm is 0° to 30°.

[0010] Optionally, the clamping bosses on the two clamping arms are arranged alternately.

[0011] Optionally, the diameter of the guide hole is greater than or equal to the sum of the diameters of the ball heads.

[0012] Optionally, there is a length difference ΔL between the first segment and the second segment, and the ΔL is greater than or equal to the ball head diameter.

[0013] Optionally, a distance D between a boundary of the first deformable wall and the second deformable wall close to one side of the deformable hole and a boundary of the other side is 0.3-1.5 mm.

[0014] Optionally, the clip and the connecting seat are made of non-magnetic elastic material or non-magnetic absorbable material.

[0015] A hemostatic clip comprises the above-mentioned clamping mechanism, and also comprises a swivel seat, a first swivel, a second swivel and a hook; the swivel seat is located on one side of the connecting seat, a limiting platform is fixedly provided on the swivel seat, the first swivel is located in the swivel seat, and the two ends of the first swivel are respectively abutted against the limiting platform; 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 hanging claw is fixedly provided on the end of the hook, and the hanging claw passes through the first release hole and is plugged into the second release hole.

[0016] Optionally, it also includes a handle, a sliding handle, a rotating wheel, a core shaft and a plastic-coated spring tube; a finger ring is provided at the end of the handle, and a through hole is provided on the hook; the plastic-coated spring tube is sleeved on the outside of the core shaft, one end of the plastic-coated spring tube is fixedly connected to the end of the handle, and the other end of the plastic-coated spring tube is fixedly connected to the swivel seat, the sliding handle is slidably arranged on the handle, one end of the core shaft is fixedly connected to the sliding handle through a fixed tube, and the other end of the core shaft 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, a flat position is provided in the rotating wheel, and the core shaft passes through the flat position and is clamped with the flat position and through a catheter.

[0017] The technical solution provided by the present invention has the following beneficial effects compared with the prior art: in response to the technical problems of defects in the existing hemostatic clips, the present invention proposes a clamping mechanism and a hemostatic clip, which improve the structure of the clip, and open a deformation hole and a connecting through hole that are combined into one at the tail of the clip, and utilize the deformation hole and the connecting through hole to cooperate with the ball head at the end of the metal wire, that is, through a single matching structure, the clamping control and the disengagement control of the clip are combined, which reduces the complexity of the metal wire movement, improves the operability of the hemostatic clip, and can avoid the mutual influence of the clamping operation and the disengagement operation of the clip during surgery.

[0018] In the technical solution, the deformation hole and the connecting through hole are designed as an integrated hole in the form of a three-way hole, which can not only avoid the influence on the strength of the clip due to the opening of multiple holes, and will not cause the clip to be deformed or even damaged during use, but also ensure that the first deformation wall and the second deformation wall have sufficient deformation to meet the locking action of the clip and the separation action of the metal wire and the clip.

[0019] Furthermore, this integrated hole structure can greatly reduce the difficulty of processing. There is no need to specially consider the relative positioning relationship between the deformation hole and the connecting through hole, and the precision requirements for design and manufacturing can be greatly reduced.

[0020] In addition, the present technical solution will not produce foreign matter such as debris, thus avoiding the potential uncertainties caused by foreign matter remaining in the patient's body and also avoiding additional foreign matter removal operations during surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is one of the structural schematic diagrams of the clamping mechanism proposed in the embodiment of the present invention.

[0022] Figure 2 This is one of the structural schematic diagrams of the clip proposed in the embodiment of the present invention.

[0023] Figure 3 It is an enlarged schematic diagram of the tail structure of the clip proposed in an embodiment of the present invention.

[0024] Figure 4 This is the second structural schematic diagram of the clip proposed in the embodiment of the present invention.

[0025] Figure 5 This is the third structural schematic diagram of the clip proposed in the embodiment of the present invention.

[0026] Figure 6 This is the fourth structural schematic diagram of the clip proposed in the embodiment of the present invention.

[0027] Figure 7 This is a schematic diagram of the working of the chuck mechanism proposed in an embodiment of the present invention.

[0028] Figure 8 This is one of the closed schematic diagrams of the clamping mechanism proposed in the embodiment of the present invention.

[0029] Fig. 9 This is the second closed schematic diagram of the clamping mechanism proposed in the embodiment of the present invention.

[0030] Fig.10 This is the second structural schematic diagram of the chuck mechanism proposed in the embodiment of the present invention.

[0031] Fig.11 This is the third structural schematic diagram of the chuck mechanism proposed in the embodiment of the present invention.

[0032] Fig.12 This is a schematic structural diagram of a connecting socket proposed in an embodiment of the present invention.

[0033] Fig.13 This is a schematic structural diagram of the first rotating ring proposed in an embodiment of the present invention.

[0034] Fig.14 This is a schematic diagram of the structure of the second rotating ring proposed in an embodiment of the present invention.

[0035] Fig.15 This is a schematic diagram of the structure of the hook proposed in an embodiment of the present invention.

[0036] Fig.16 This is a schematic diagram of the structure of the hemostatic clip provided in an embodiment of the present invention.

[0037] Fig.17 This is one of the working schematic diagrams of the hemostatic clip provided in the embodiment of the present invention.

[0038] Fig.18 This is the second working schematic diagram of the hemostatic clip proposed in the embodiment of the present invention. DETAILED DESCRIPTION

[0039] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.

[0040] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant inventions, rather than to limit the invention. It should also be noted that, for the convenience of description, only the parts related to the invention are shown in the accompanying drawings. The words "first", "second", etc. described in the present invention are set for the convenience of describing the technical solution of the present invention, and have no specific limiting effect. They are all general references and do not constitute a limiting effect on the technical solution of the present invention. It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. In the description of the present invention, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection between the insides of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Multiple technical solutions in the same embodiment, and multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions without contradictions or conflicts, all of which are within the scope of protection required by the present invention.

[0041] Example 1

[0042] Combined with Figure 1 To Attachment Fig.12 This embodiment provides a clamping mechanism, including a connecting seat 1, a metal wire and two clamping pieces 3. The two clamping pieces 3 intersect and are hinged to the connecting seat 1 at the intersection. The clamping piece 3 includes a clamping arm 35, on which a clamping tooth 36 is fixedly provided, and a clamping boss 37 is fixedly provided at the end of the clamping arm 35. The clamping arm 35 is inclined to the side where the clamping tooth 36 is located.

[0043] A hanging platform 30 is fixedly provided at the tail of the clip 3, and locking platforms 10 are provided on both sides of the connecting seat 1, and the hanging platform 30 is used to be clamped with the locking platform 10; a deformation hole 31 and a connecting through hole 32 are provided on the clip 3 near the hanging platform 30, and the deformation hole 31 is connected with the connecting through hole 32 to form an integrated hole in the form of a three-way, so that the tail of the clip 3 is close to the hanging platform 30 to form a first deformation wall 33 and a second deformation wall 34.

[0044] The connecting seat 1 is provided with a guide hole 11, through which the metal wire passes, and the metal wire includes a first segment 21 and a second segment 22, at the ends of which a ball head 23 is fixedly provided; the diameter of the ball head 23 is larger than the passing dimension of the connecting through hole 32, and the diameter of the ball head 23 is smaller than the passing dimension 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, and the ball head 23 is located in the deformation hole 31.

[0045] The working process of the clamping mechanism of this embodiment is roughly divided into the clamping process of the clamping piece 3 and the separation process of the metal wire and the clamping piece 3. The clamping mechanism of this embodiment realizes the combination of the clamping control and the separation control of the clamping piece 3 by connecting the deformation hole 31 and the connecting through hole 32 with the ball head 23 at the end of the metal wire.

[0046] The clamping mechanism of this embodiment is a component of the hemostatic clamp, and its connecting seat 1 needs to be connected with other parts of the hemostatic clamp, and the metal wire also needs to be connected with the traction mechanism in the hemostatic clamp. To simplify the description, this embodiment does not elaborate on the rest of the hemostatic clamp, but only explains that the metal wire will be pulled along the axial direction of the connecting seat 1 by the traction action of the traction mechanism in the hemostatic clamp.

[0047] As for the clamping process of the clip 3, the working condition is as follows: when the metal wire is pulled or pushed, since the diameter of the ball head 23 is larger than the passing size of the connecting through hole 32, the ball head 23 will not directly detach from the connecting through hole 32, but will drive the clips 3 on both sides to rotate, thereby achieving the clamping or opening of the clip 3.

[0048] When the clamping and locking of the clip 3 is not required, the fully closed state of the clip 3 is the state of the clip 3 when the hanging platform 30 just contacts the locking platform 10. When the clip 3 is in the fully closed state, the clamp mechanism can be easily inserted into the endoscope channel by maintaining this state. Fig.17 When the clamp mechanism is sent to the vicinity of the lesion wound surface along the endoscope clamp channel, the clamping piece 3 can be reopened or closed by pushing or pulling the metal wire by the traction mechanism, so as to perform a clamping operation on the lesion wound surface. When the clamping operation on the lesion wound surface is completed, the clamping piece 3 needs to be locked.

[0049] When the clamping and locking of the clip 3 is required, the metal wire needs to be continuously pulled back. When the hanging platform 30 on the clip 3 comes into contact with the locking platform 10, the metal wire is still pulled to squeeze the hanging platform 30 and the locking platform 10. The squeezing situation is shown in the attached figure. Figure 7As shown by the arrow, since the deformation hole 31 is connected with the connecting through hole 32 to form an integrated hole in the form of a three-way, the first deformation wall 33 and the second deformation wall 34 will deform, and the deformation hole 31 will also deform synchronously. It can be understood that the existence of the deformation hole 31 constitutes the premise for the first deformation wall 33 and the second deformation wall 34 to be able to achieve deformation. Obviously, the diameter of the ball head 23 needs to be smaller than the passing size of the deformation hole 31, so as to provide a margin for the deformation of the first deformation wall 33 and the second deformation wall 34, and avoid the ball head 23 being stuck in the deformation hole 31 to interfere with the deformation of the first deformation wall 33 and the second deformation wall 34. When the hanging platform 30 passes over the locking platform 10, the hanging platform 30 and the locking platform 10 are no longer squeezed, and the deformation of the first deformation wall 33, the second deformation wall 34 and the deformation hole 31 is restored. At this time, the locking platform 10 can achieve a blocking effect on the hanging platform 30, preventing the clip 3 from opening, thereby ensuring that the clip 3 is in a clamped and locked state.

[0050] The process of separating the metal wire from the clip 3 is as follows: after the hanging platform 30 passes over the locking platform 10, when the clip 3 is in the clamped and locked state, the metal wire continues to be pulled, and the ball head 23 on the first segment 21 and the second segment 22 will continue to exert force on the first deformable wall 33 and the second deformable wall 34, and the first deformable wall 33 and the second deformable wall 34 will continue to deform until the passing size of the connecting through hole 32 is larger than the diameter of the ball head 23, and the ball head 23 is thus pulled out, and the metal wire and the clip 3 are also separated. Then the metal wire will pass through the guide hole 11 and leave the clamp mechanism, as shown in the attached Fig.18 As shown, the rest of the clamping mechanism except the metal wire will remain in the human body to ensure the clamping of the diseased wound surface.

[0051] The clamping process of the clip 3 is mainly aimed at clamping the lesion wound surface. In order to ensure the clamping effect on the lesion wound surface, the clip 3 of this embodiment is provided with clamping teeth 36 and clamping bosses 37. The clamping teeth 36 and clamping bosses 37 can further improve the clamping effect of the clamping mechanism on the lesion wound surface. At the same time, this design can also make the clamping mechanism have a better clamping effect.

[0052] Based on the above description, it can be known that compared with the prior art, the clamping mechanism proposed in this embodiment improves the structure of the clip 3, and opens a deformation hole 31 and a connecting through hole 32 which are combined into one at the tail of the clip 3. The deformation hole 31 and the connecting through hole 32 are used to cooperate with the ball head 23 at the end of the metal wire, that is, through a single matching structure, the clamping control and the disengagement control of the clip 3 are combined, which reduces the complexity of the metal wire movement, improves the operability of the hemostatic clip, and can avoid the mutual influence of the clamping operation and the disengagement operation of the clip 3 during surgery.

[0053] In the present technical solution, the deformation hole 31 and the connecting through hole 32 are designed as an integrated hole in the form of a three-way hole, which can not only avoid affecting the strength of the clip 3 due to the opening of multiple holes, and will not cause the clip 3 to be deformed or even 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 clip 3 and the separation action of the metal wire and the clip 3.

[0054] Furthermore, this integrated hole structure can greatly reduce the difficulty of processing, and there is no need to particularly consider the relative positioning relationship between the deformation hole 31 and the connecting through hole 32 , and the precision requirements for design and manufacturing can be greatly reduced.

[0055] In addition, the present technical solution will not produce foreign matter such as debris, thus avoiding the potential uncertainties caused by foreign matter remaining in the patient's body and also avoiding additional foreign matter removal operations during surgery.

[0056] Combined with Figure 8 As can be seen from the above description, the chuck mechanism needs to be sent to the vicinity of the lesion wound along the endoscope channel. If there are clamping teeth 36 and clamping bosses 37, even if the clip 3 is in a fully closed state, the width of the end of the chuck mechanism may still be too large, making it inconvenient to insert into the endoscope channel. Therefore, in this embodiment, the clamp arm 35 is further designed to be inclined toward the side where the clamping teeth 36 are located. At this time, when the clip 3 is in a fully closed state, the width of the end of the chuck mechanism will be greatly reduced, thereby making it easier to insert the chuck mechanism into the endoscope channel. Figure 2 and attached Figure 8 In a preferred embodiment, the inclination angle A of the clamp arm 35 is 0° to 30°. Therefore, the clamp mechanism of this embodiment has another advantage that it can more conveniently enter the endoscope clamp channel compared to other hemostatic clamps with a bite structure.

[0057] And, in a further improved manner, the clamping bosses 37 on the two clamp arms 35 are staggered. Compared with the clamping bosses 37 on the two clamping pieces 3 directly abutting against each other, which will hinder the closing, in this embodiment, when the clamping pieces 3 are closed, the width of the end of the clamp mechanism will not increase too much because the clamping bosses 37 are staggered, which is more conducive to the insertion of the clamp mechanism into the endoscope clamp channel.

[0058] In a specific embodiment, in combination with Figure 5 To Attachment Figure 8, two clamping bosses 37 are provided on the clamping arm 35 on one side, and the two clamping bosses 37 are respectively located on both sides of the end of the clamping arm 35, and a gap is formed between the two clamping bosses 37. On the other side, one clamping boss 37 is provided on the clamping arm 35, and this clamping boss 37 is located in the middle position of the end of the clamping arm 35 on this side. When the clamping pieces 3 on both sides are closed, the clamping boss 37 on one side can be just fitted into the gap between the two clamping bosses 37 on the clamping arm 35 on the other side, thereby achieving a better bite effect and avoiding excessive increase in the width dimension of the end of the clamping head mechanism.

[0059] Combined with the above description, it can be known that the metal wire will eventually pass through the guide hole 11 and leave the chuck mechanism. However, due to the existence of the ball head 23, it may interfere with the inner wall of the guide hole 11, resulting in the metal wire not being able to escape smoothly. 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. At this time, the ball heads 23 located on the first segment 21 and the second segment 22 can pass through the guide hole 11 at the same time to avoid getting stuck.

[0060] And, in another improved embodiment, there is a length difference ΔL between the first segment 21 and the second segment 22, and ΔL is greater than or equal to the diameter of the ball head 23. As a result, the ball heads 23 of the first segment 21 and the second segment 22 are staggered and will not pass through the guide hole 11 at the same time, thereby preventing the ball head 23 from being stuck in the guide hole 11.

[0061] In the above description, when the hanging platform 30 passes over the locking platform 10 and when the metal wire is separated from the clip 3, the first deformable wall 33 and the second deformable wall 34 need to be deformed. Figure 3 In order to ensure the deformation performance of the first deformable wall 33 and the second deformable wall 34, in a preferred embodiment, the distance D between the boundary of the first deformable wall 33 and the second deformable wall 34 close to the deformation hole 31 and the boundary of the other side is 0.3-1.5 mm. Obviously, the distance D represents the thickness of the first deformable wall 33 and the second deformable wall 34. The smaller the distance D between the first deformable wall 33 and the second deformable wall 34, the easier it is to deform, but correspondingly, its structural strength will also decrease; on the contrary, if the distance D between the first deformable wall 33 and the second deformable wall 34 is larger, its structural strength will increase, but its deformation will be more difficult to occur. Therefore, in this embodiment, the distance D is set to be within the range of 0.3-1.5 mm, such as 0.3 mm, 0.5 mm, 0.7 mm, 0.9 mm, 1.1 mm, 1.3 mm and 1.5 mm, etc. Preferably, the distance D should be kept between 0.9 and 1 mm.

[0062] In addition, since the current chuck mechanism, the material of the clip 3 and other parts are mostly made of metal materials such as stainless steel, the chuck mechanism itself may contain magnetism, which makes it impossible for patients who have undergone endoscopic minimally invasive treatment to undergo MRI examinations in a short period of time and to pass security checks when traveling. Therefore, in a preferred embodiment, the clip 3 and the connecting seat 1 are made of non-magnetic elastic materials or non-magnetic absorbable materials. Specifically, they include pure titanium, magnesium alloy, zinc alloy, polylactic acid, polyglycolide, polyglycolide-trimethylene carbonate, polyetheretherketone, polyamide, polyoxymethylene, ultra-high molecular weight polyethylene, polycarbonate, etc. In a preferred embodiment, pure titanium or polyetheretherketone materials can be selected as needed. In this way, it can be ensured that the chuck mechanism is compatible with MRI examinations when it remains in the human body, that is, it has no effect on the patient's magnetic resonance examination and no effect on passing security checks.

[0063] Example 2

[0064] Combined with Figure 1 , Attachment Fig.10 To Attachment Fig.15 This embodiment proposes a hemostatic clip, including the chuck mechanism proposed in Embodiment 1, and also including a swivel seat 4, a first swivel 5, a second swivel 6 and a hook 7. The swivel seat 4 is located on one side of the connecting seat 1, a limit platform 40 is fixedly provided on the swivel seat 4, the first swivel 5 is located in the swivel seat 4, and both ends of the first swivel 5 are respectively in contact with the limit platform 40. The outer wall of the second swivel 6 is fixedly connected to the inner wall of the first swivel 5, an extension boss 60 is fixedly provided on the second swivel 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, and a hook 71 is fixedly provided at the end of the hook 7, and the hook 71 passes through the first release hole 61 and is plugged into the second release hole 12.

[0065] The chuck mechanism is a part of the hemostatic clamp. During surgical operation, the chuck mechanism needs to be separated from the rest of the hemostatic clamp, that is, the chuck mechanism needs to be released. Embodiment 1 has described the separation of the metal wire and the clip, so this embodiment is designed with a matching mechanism for the connection and release between the chuck mechanism and the rest of the hemostatic clamp.

[0066] Based on the structural description of this embodiment, the principle of connecting and disconnecting the clamp mechanism and the rest of the hemostatic clamp is as follows: the swivel seat 4 assembles the first swivel 5 inside it through the limit platform 40, but still ensures that the first swivel 5 can rotate, and the inner wall of the first swivel 5 and the outer wall of the second swivel 6 are fixedly connected by welding or bonding, or are an integrated structure. The hook 71 on the hook 7 simultaneously passes through the first release hole 61 on the extension boss 60 and the second release hole 12 on the connecting seat 1 to connect the second swivel 6 to the connecting seat 1.

[0067] The release process of the clamp mechanism is after the metal wire is separated from the clip 3. After the metal wire is separated from the clip 3, it continues to move axially until it abuts against the hook 7 and exerts a force on the hook 7, which causes the claw 71 to be separated from the second release hole 12 on the connection seat 1. Obviously, since the clamp mechanism only relies on the cooperation between the first release hole 61 and the second release hole 12 and the claw 71 to achieve connection, when the claw 71 is separated from the second release hole 12, the connection seat 1 and the clip 3 thereon in the clamp mechanism can be released, so that they are retained in the human body to clamp the lesion wound surface, and the swivel seat 4, the first swivel 5, the second swivel 6 and the hook 7 below the connection seat 1 can leave the human body together with the rest of the hemostatic clip.

[0068] Combined with Fig.16 In a further embodiment, the hemostatic clip further comprises a handle 80, a sliding handle 81, a rotating wheel 82, a core shaft 83 and a plastic-coated spring tube 88; a finger ring 84 is provided at the end of the handle 80, and a through hole 72 is also provided on the hook 7. The plastic-coated spring tube 88 is sleeved on the outer side of the core shaft 83, one end of the plastic-coated spring tube 88 is fixedly connected to the end of the handle 80, and the other end of the plastic-coated spring tube 88 is fixedly connected to the rotating ring seat 4. The sliding handle 81 is slidably arranged on the handle 80, one end of the core shaft 83 is fixedly connected to the sliding handle 81 through a fixed tube 85, and the other end of the core shaft 83 passes through the through hole 72 and is fixedly connected to the metal wire through a connecting tube 86. The rotating wheel 82 is rotatably connected to the handle 80, a flat position is provided inside the rotating wheel 82, and the core shaft 83 passes through the flat position and is clamped with the flat position and the flat position through a catheter 87.

[0069] In this embodiment, the handle 80, the plastic-coated spring tube 88, the rotating ring seat 4 and the connecting seat 1 are connected in sequence to form the main structure of the hemostatic clip. Among them, the sliding handle 81 and the core shaft 83 and other related structures constitute a traction mechanism that can pull the metal wire, that is, the sliding of the sliding handle 81 relative to the handle 80 can drive the axial movement of the metal wire through the core shaft 83 to achieve the opening and closing, closing and locking, and disengagement and release operations of the clip 3. The rotating wheel 82 can transmit its own rotation to the clip 3 through the cooperation of the internal flat position and the core shaft 83, thereby controlling the rotation of the clip 3. The finger ring 84 at the end of the handle 80 can improve the convenience of operation of the hemostatic clip and can meet more gripping methods.

[0070] The above is a schematic description of the present invention and its implementation methods, which is not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and creatively designs a structure and an embodiment similar to the technical solution without departing from the purpose of the invention, they should all fall within the protection scope of the present invention.

Claims

1. A chuck mechanism, characterized in that: It comprises a connecting seat (1), a metal wire and two clips (3); The two clips (3) intersect, and the intersection is hinged to the connecting seat (1), the clip (3) comprises a clip arm (35), a clipping tooth (36) is fixedly provided on the clip arm (35), a clipping boss (37) is fixedly provided at the end of the clip arm (35), and the clip arm (35) is inclined towards the side where the clipping tooth (36) is located; A hanging platform (30) is fixedly provided at the tail of the clip (3), and locking platforms (10) are provided on both sides of the connecting seat (1), and the hanging platforms (30) are used to be clamped with the locking platforms (10); a deformation hole (31) and a connecting through hole (32) are provided at the clip (3) near the hanging platform (30), and the deformation hole (31) and the connecting through hole (32) are connected to form an integrated hole in the form of a three-way, so that a first deformation wall (33) and a second deformation wall (34) are formed at the tail of the clip (3) near the hanging platform (30); The connecting seat (1) is provided with a guide hole (11), the metal wire passes through the guide hole (11), the metal wire comprises a first segment (21) and a second segment (22), and the ends of the first segment (21) and the second segment (22) are both fixedly provided with ball heads (23); the diameter of the ball head (23) is larger than the passing dimension of the connecting through hole (32), and the diameter of the ball head (23) is smaller than the passing dimension 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), and the ball head (23) is located in the deformation hole (31).

2. A chuck mechanism according to claim 1, characterized in that: The inclination angle A of the clamping arm (35) is 0° to 30°.

3. A chuck mechanism according to claim 1, characterized in that: The clamping bosses (37) located on the two clamping arms (35) are arranged in a staggered manner.

4. A chuck mechanism according to claim 1, characterized in that: The diameter of the guide hole (11) is greater than or equal to the sum of the diameters of the ball heads (23).

5. A chuck mechanism according to claim 1, characterized in that: 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).

6. A chuck mechanism according to claim 1, characterized in that: The distance D between the boundary of the first deformable wall (33) and the second deformable wall (34) close to one side of the deformable hole (31) and the boundary of the other side is 0.3 to 1.5 mm.

7. A chuck mechanism according to claim 1, characterized in that: The clip (3) and the connecting seat (1) are made of non-magnetic elastic material or non-magnetic absorbable material.

8. A hemostatic clip, comprising a clamping mechanism according to any one of claims 1 to 7, characterized in that: It also includes a swivel seat (4), a first swivel (5), a second swivel (6) and a hook (7); The swivel seat (4) is located at one side of the connecting seat (1), a limiting platform (40) is fixedly arranged on the swivel seat (4), the first swivel (5) is located in the swivel seat (4), and both ends of the first swivel (5) are respectively in contact with the limiting platform (40); 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 plugged into the second release hole (12).

9. A hemostatic clip according to claim 8, characterized in that: It also includes a handle (80), a sliding handle (81), a rotating wheel (82), a core shaft (83) and a plastic-coated spring tube (88); a finger ring (84) is provided at the end of the handle (80), and a through hole (72) is provided on the hook (7); The plastic coated spring tube (88) is sleeved on the outer side of the core shaft (83), one end of the plastic coated spring tube (88) is fixedly connected to the end of the handle (80), the other end of the plastic coated spring tube (88) is fixedly connected to the swivel seat (4), the sliding handle (81) is slidably arranged on the handle (80), one end of the core shaft (83) is fixedly connected to the sliding handle (81) via a fixing tube (85), and the other end of the core shaft (83) passes through the through hole (72) and is fixedly connected to the metal wire via a connecting tube (86); The rotating wheel (82) is rotatably connected to the handle (80), a flat position is provided inside the rotating wheel (82), and the core shaft (83) passes through the flat position and is clamped with the flat position via a guide tube (87).

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