Chuck assembly, clamping and releasing mechanism and hemostatic clip

Abstract

The utility model relates to the technical field of hemostatic clips, in particular to a chuck assembly, a clipping and releasing mechanism and a hemostatic clip. In order to solve the technical problem that an existing hemostatic clip has defects, according to the chuck assembly, the clamping and closing releasing mechanism and the hemostatic clip, the structure of a clamping piece is improved, a three-way integrated hole is formed in the tail of the clamping piece, and the integrated hole is connected with a ball head of a metal wire in a matched mode, so that clamping and closing of the clamping piece are controlled, and the hemostatic clip is convenient to use. And the mutual influence of the clamping and closing operation and the separation operation of the clamping pieces in the operation can be avoided by combining the control of the metal wire and the separation control between the metal wire and the clamping pieces. And moreover, through the design of the multi-stage locking part, the clamping piece can be locked under different clamping degrees, so that the clamping requirements under different conditions are met, and more excellent practicability and operation convenience are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hemostatic clamp, specifically relates to a chuck assembly, clamp closing release mechanism and hemostatic clamp. BACKGROUND

[0002] With the development of endoscopic technology and other related technologies, endoscopic hemostasis has become the preferred treatment method for the treatment of digestive tract bleeding. The commonly used endoscopic hemostasis methods at present include laser coagulation, electrocoagulation, local injection drug hemostasis, drug spraying and suture clamp clipping, etc. Among them, the suture clamp clipping method has become the most effective and most clinically valuable method for non-surgical treatment of digestive tract bleeding due to its small trauma, fast hemostasis speed, low rebleeding rate, few complications and definite curative effect.

[0003] The hemostatic clamp circulating on the market is mainly divided into two types of chute type and bullet type. The hemostatic clamp of these two types is composed of clamp pipe, clamp piece and stop pin. However, the structure design of the hemostatic clamp does not realize the good integration of clamping operation and disengagement operation. The structure for realizing clamping operation and the structure for realizing disengagement operation often interfere with each other, resulting in misoperation in surgery.

[0004] In addition, the clamp head part of the general hemostatic clamp can realize locking after clamping, but such locking after clamping can only be realized when the clamp head part is at a certain specific clamping degree, or only when the clamp head part is closed to a certain specific degree, the locking at the clamping degree can be realized. Such design has certain defects. Because when the clamp head part clamps and stops bleeding of different sizes of lesion tissues, the closing degree of the clamp head part is different, and when the clamp head part is in the locking state, the closing degree is determined, at this time, there will be a conflict.

[0005] For example, if the lesion tissue of smaller volume needs to be clamped, the closing degree of the clamp head part needs to be tighter, but because the clamp head part of the hemostatic clamp can only be locked at a specific clamping degree, the closing degree of the clamp head part may not be enough, which cannot guarantee the clamping force, so as to cannot guarantee to realize sufficient clamping of the lesion tissue of smaller volume, and further affect the effect of clamping and stopping bleeding.

[0006] As can be understood, if the lesion tissue of larger volume needs to be clamped, the closing degree of the clamp head part does not need to be particularly tight, that is, the opening of the clamp head part needs to be relatively larger to accommodate the lesion tissue of larger volume, but because the clamp head part of the hemostatic clamp can only be locked at a specific clamping degree, the clamp head part may not be closed to the degree required for locking, that is, cannot guarantee to realize sufficient clamping of the lesion tissue of larger volume. If forced clamping, the clamping force may be too large, which may cause the clamp head part to pop open or deform, and further affect the effect of clamping and stopping bleeding. The utility model discloses a content

[0007] In view of the technical problem that the existing hemostatic clamp has defects, the utility model provides a chuck assembly, a clamping and releasing mechanism and a hemostatic clamp, which improves the structure of the clamp piece, opens an integrated hole in the form of a tee joint at the tail of the clamp piece, and connects the integrated hole with the ball head of the wire, thereby combining the clamping control of the clamp piece with the disengagement control between the wire and the clamp piece, and avoiding the mutual influence of the clamping operation and the disengagement operation of the clamp piece during the operation. In addition, through the design of the multi-stage locking part, the clamp piece can be locked at different clamping degrees to meet the clamping requirements in different situations, and has better practicability and operation convenience.

[0008] The utility model provides a technical scheme: a chuck assembly, including connecting seat, wire and two clamp pieces, two the clamp piece intersection and with connecting seat articulates, the tail of clamp piece is provided with deformation hole and connecting hole, deformation hole with connecting hole intercommunication constitutes integrated hole in the form of tee joint, to make the tail of clamp piece form first deformation wall and second deformation wall, be provided with guide hole on connecting seat, wire passes through guide hole, wire includes two connection subsection, two the connection subsection's end all are fixedly provided with ball head, the size of passing through connecting hole is less than the diameter of ball head, two the connection subsection respectively passes through two connecting hole on clamp piece, ball head is located in deformation hole, be fixedly provided with terminal lock platform on the clamp piece near connecting hole, terminal lock platform includes cut -off side and non -cut -off side, the both sides of connecting seat are provided with limit lock platform, limit lock platform includes limit side and non -limit side, non -cut -off side is used for with non -limit side abut, cut -off side is used for with limit side abut, be provided with multistage locking part on the clamp piece or connecting seat, multistage locking part is used for make clamp piece is locked at different positions, when multistage locking part sets up on clamp piece, multistage locking part is located in the side of non -cut -off side of terminal lock platform, and multistage locking part is used for with limit lock platform abut, when multistage locking part sets up on connecting seat, multistage locking part is located in the side of non -limit side of limit lock platform, and multistage locking part is used for with terminal lock platform abut.

[0009] Optionally, when the multistage locking part is arranged on the clamp piece, the multistage locking part comprises n sub-stage lock platforms, and the n sub-stage lock platforms are arranged continuously in a direction away from the cut-off side along the non-cut-off side; cut-off grooves are formed between the n sub-stage lock platforms and between the terminal lock platform and the adjacent sub-stage lock platform, and the cut-off grooves are used for clamping the limit lock platform; wherein n≥1, and n∈N.

[0010] Optionally, the volume of the sub-stage lock platform is less than or equal to the volume of the terminal lock platform.

[0011] Optionally, when the multi-stage locking part is arranged on the connecting seat, the multi-stage locking part comprises i sub-stage limiting platforms, i sub-stage limiting platforms are arranged in series in a direction away from the limiting side along the non-limiting side; a limiting groove is formed between i sub-stage limiting platforms and between the sub-stage limiting platform and the adjacent limiting locking platform, and the limiting groove is used for clamping the terminal locking platform; wherein i >= 1, and i belongs to N.

[0012] Optionally, the volume of the sub-stage limiting platform is less than or equal to the volume of the limiting locking platform.

[0013] Optionally, the clamping piece comprises a clamping arm, and the head end of the clamping arm on any clamping piece is inclined to the side of the other clamping piece where the clamping arm is located.

[0014] Optionally, the inclination angle A of the clamping arm is 0-30 degrees.

[0015] Optionally, the clamping piece and the connecting seat are made of non-magnetic elastic material or non-magnetic absorbable material.

[0016] A clamping and releasing mechanism comprises a clamping head assembly, a swivel base, a first swivel ring, a second swivel ring and a hook; the swivel base is located on one side of the connecting seat, a limiting platform is fixedly arranged on the swivel base, the first swivel ring is located in the swivel base, and the two ends of the first swivel ring are respectively in abutment with the limiting platform; the outer wall of the second swivel ring is fixedly connected with the inner wall of the first swivel ring, an extension boss is fixedly arranged on the second swivel ring, a first release hole is arranged on the extension boss, a second release hole is arranged on the connecting seat, a hook claw is fixedly arranged on the end of the hook, the hook claw is inserted through the first release hole and the second release hole, and a through hole is further arranged on the hook.

[0017] A hemostatic clamp comprises the clamping and releasing mechanism, a handle, a sliding handle, a rotating wheel, a plastic-coated spring tube and a mandrel; a finger ring is arranged on the end of the handle; the plastic-coated spring tube is sleeved on the outside of the mandrel, one end of the plastic-coated spring tube is fixedly connected with the end of the handle, the other end of the plastic-coated spring tube is fixedly connected with the swivel base, the sliding handle is slidingly arranged on the handle, one end of the mandrel is fixedly connected with the sliding handle through a fixed tube, the other end of the mandrel is fixedly connected with the metal wire through a connecting tube; the rotating wheel is rotationally connected with the handle, a flat position is arranged in the rotating wheel, the mandrel passes through the flat position and is clamped with the flat position through a guide tube.

[0018] Compared with the prior art, the technical scheme has the following beneficial effects:

[0019] The utility model discloses the structure of the clamping piece is improved, and the integral hole of three -way form is seted up in the tail of clamping piece, and the integral hole is connected with the ball head of the wire, thereby the clamping of clamping piece is controlled, and the disengagement control between the wire and clamping piece is combined, can avoid the clamping operation and disengagement operation of clamping piece in operation mutual influence.

[0020] And, through the design of multistage locking portion, the locking of clamping piece under different clamping degrees can be realized to satisfy the clamping demand of different situations, and the practicability and operation convenience are better.

[0021] In addition, the technical scheme will not produce the foreign matter such as scrap, avoids the potential uncertain factor that the foreign matter stays in the patient's body can produce, also avoids the additional foreign matter taking out operation in operation. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The structure schematic view of the chuck assembly is provided for the utility model embodiment.

[0023] Figure 2 The structure schematic view of the clamping piece is provided for the utility model embodiment.

[0024] Figure 3 The structure schematic view of the clamping piece is provided for the utility model embodiment.

[0025] Figure 4 The structure schematic view of the clamping piece is provided for the utility model embodiment.

[0026] Figure 5 The structure schematic view of the clamping piece is provided for the utility model embodiment.

[0027] Figure 6 The structure schematic view of the connecting seat is provided for the utility model embodiment.

[0028] Figure 7 The structure schematic view of the connecting seat is provided for the utility model embodiment.

[0029] Figure 8 The structure schematic view of the connecting seat is provided for the utility model embodiment.

[0030] Figure 9 The cooperation schematic view of the chuck assembly is provided for the utility model embodiment.

[0031] Figure 10 The cooperation schematic view of the chuck assembly is provided for the utility model embodiment.

[0032] Figure 11Structure schematic view of the clamping and closing release mechanism for the embodiment of the utility model.

[0033] Figure 12 Structure schematic view of the clamping and closing release mechanism for the embodiment of the utility model.

[0034] Figure 13 Structure schematic view of the clamping and closing release mechanism for the embodiment of the utility model.

[0035] Figure 14 Structure schematic view of the first rotating ring for the embodiment of the utility model.

[0036] Figure 15 Structure schematic view of the second rotating ring for the embodiment of the utility model.

[0037] Figure 16 Structure schematic view of the hook for the embodiment of the utility model.

[0038] Figure 17 Structure schematic view of the hemostatic clip for the embodiment of the utility model.

[0039] Figure 18 Working schematic view of the hemostatic clip for the embodiment of the utility model.

[0040] Figure 19 Working schematic view of the hemostatic clip for the embodiment of the utility model. DETAILED DESCRIPTION

[0041] In order to further understand the content of the utility model, the utility model is described in detail in combination with the drawings and the embodiments.

[0042] The application will be described in further detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only intended to explain the related utility model, and not to limit the utility model. In addition, it should be noted that only parts related to the utility model are shown in the drawings for ease of description. The terms first, second, and the like in the utility model are set for the convenience of describing the technical solutions of the utility model, and have no specific limiting effect, and all refer to the technical solutions of the utility model. It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other without conflict. In the description of the utility model, it should be noted that the terms 'center', 'upper', 'lower', 'left', 'right','vertical', 'horizontal', 'inner', 'outer' and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms 'first','second', 'third' are only for descriptive purposes, and cannot be understood as indicating or implying relative importance. Unless otherwise specified and limited, the terms'mounting', 'connection', 'connection' should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. The technical solutions in the same embodiment and the technical solutions in different embodiments can be arranged and combined to form new technical solutions without contradiction or conflict, which are within the scope of protection of the utility model.

[0043] Embodiment 1

[0044] In combination with the drawings Figure 1 to the drawings Figure 13 The embodiment provides a clamp assembly, which comprises a connecting seat 1, a wire and two clamping pieces 3. The two clamping pieces 3 intersect and are hinged to the connecting seat 1, the tail of the clamping piece 3 is provided with a deformation hole 31 and a connecting hole 32, the deformation hole 31 and the connecting hole 32 are communicated to form an integrated hole in the form of a tee joint, so that the tail of the clamping piece 3 forms a first deformation wall 33 and a second deformation wall 34.

[0045] The connecting seat 1 is provided with a guide hole 11, the wire penetrates through the guide hole 11, the wire comprises two connecting sections 20, the ends of the two connecting sections 20 are fixedly provided with ball heads 23, the passing size of the connecting hole 32 is smaller than the diameter of the ball head 23, the two connecting sections 20 penetrate through the connecting holes 32 on the two clamping pieces 3 respectively, and the ball head 23 is located in the deformation hole 31.

[0046] The terminal locking platform 30 is fixedly arranged on the clamping sheet 3 near the connecting hole 32, and includes a cut-off side 301 and a non-cut-off side 302; the limiting locking platform 10 is arranged on both sides of the connecting seat 1, and includes a limiting side 101 and a non-limiting side 102; the non-cut-off side 302 is used for abutting against the non-limiting side 102, and the cut-off side 301 is used for abutting against the limiting side 101.

[0047] A multi-stage locking part is arranged on the clamping sheet 3 or the connecting seat 1, and is used for locking the clamping sheet 3 at different positions; when the multi-stage locking part is arranged on the clamping sheet 3, the multi-stage locking part is located on the side of the non-cut-off side 302 of the terminal locking platform 30, and is used for abutting against the limiting locking platform 10; when the multi-stage locking part is arranged on the connecting seat 1, the multi-stage locking part is located on the side of the non-limiting side 102 of the limiting locking platform 10, and is used for abutting against the terminal locking platform 30.

[0048] The clamp head assembly of the embodiment is a component of a hemostatic clip, and the connecting seat 1 needs to be connected with other parts of the hemostatic clip, and the wire also needs to be connected with a traction mechanism in the hemostatic clip, for the sake of simplifying the description, the remaining parts of the hemostatic clip are not described in the embodiment, but it should be noted that the wire is pulled along the axial direction of the connecting seat 1 by the traction mechanism in the hemostatic clip.

[0049] The working process of the clamp head assembly of the embodiment includes opening and closing of the clamping sheet 3, locking when the clamping sheet 3 is closed to different degrees, and separation of the wire from the clamping sheet 3 after the clamping sheet 3 is locked. The closing of the clamping sheet 3 and the separation of the wire from the clamping sheet 3 are realized by cooperation of the integral hole formed by the communication of the deformation hole 31 and the connecting hole 32 and the ball head 23 of the wire. The locking when the clamping sheet 3 is closed to different degrees is realized by cooperation between the terminal locking platform 30, the limiting locking platform 10 and the multi-stage locking part. In summary, the clamp head assembly of the embodiment combines the closing control and separation control of the clamping sheet 3 by cooperation of the deformation hole 31 and the connecting hole 32 with the ball head 23 of the end of the wire.

[0050] The opening and closing process of the clamping sheet 3 mainly refers to the control of the opening and closing of the clamping sheet 3, and the working principle is that the wire is pushed or pulled along the axial direction, the clamping sheet 3 moves with the wire because the ball head 23 at the end of the connecting segment 20 cooperates with the deformation hole 31 and the connecting hole 32, and the passing size of the connecting hole 32 is smaller than the diameter of the ball head 23, so that the clamping sheet 3 is opened and closed.

[0051] During the operation of hemostasis by the clipping method, after the clip 3 has clamped the lesion tissue, it is necessary to continuously maintain the clamping of the clip 3 on the lesion tissue. It is conceivable that, in actual operation, due to the fact that the volume of the lesion tissue to be clamped by the clipping method is not the same, the size of the opening between the clips 3 is not the same, that is, the clamping degree of the chuck assembly is not the same. When a larger volume of lesion tissue is clamped, the size of the opening between the clips 3 will be relatively larger, and when a smaller volume of lesion tissue is clamped, the size of the opening between the clips 3 will be relatively smaller, thus involving the locking of the clip 3 at a certain clamping degree.

[0052] The locking principle of the clip 3 is closely related to the structure of the joint assembly, that is, closely related to the setting form of the multi-stage locking part, which is roughly divided into two cases: one is that the multi-stage locking part is located on the clip 3, that is, the multi-stage locking is realized by the abutment of the multi-stage locking part or the terminal locking table 30 on the clip 3 with the limiting locking table 10 on the connecting seat 1; the other is that the multi-stage locking part is located on the connecting seat 1, and the multi-stage locking is realized by the abutment of the multi-stage locking part or the limiting locking table 10 on the connecting seat 1 with the terminal locking table 30 on the clip 3.

[0053] Taking the case that the multi-stage locking part is arranged on the clip 3, in this embodiment, the multi-stage locking part includes n sub-stage locking tables 303, and the n sub-stage locking tables 303 are continuously arranged in the direction away from the cutoff side 301 along the non-cutoff side 302; the cutoff groove 304 is formed between the n sub-stage locking tables 303 and between the terminal locking table 30 and the adjacent sub-stage locking table 303, and the cutoff groove 304 is used for clamping with the limiting locking table 10; wherein n≥1, and n∈N.

[0054] Based on this embodiment, after the clip 3 clamps the lesion tissue, the sub-stage locking table 303 is brought into contact with and pressed against the limiting locking table 10 by continuing to pull the wire, and due to the existence of the deformation hole 31, the first deformation wall 33 and the second deformation wall 34 will fully deform, causing part of the sub-stage locking table 303 to pass over the limiting locking table 10. At this time, due to the fact that the lesion tissue will exert a counterforce on the clip 3, the clip 3 cannot be continuously pulled at a certain clamping degree, and at this time, the sub-stage locking table 303 that has passed over the limiting locking table 10 and is adjacent to the limiting locking table 10 will abut against the limiting side 101 of the limiting locking table 10. It can also be understood that at this time, the limiting locking table 10 is clamped into the corresponding cutoff groove 304, and at this time, the deformation hole 31 has also returned to its original position, causing the clip 3 to be unable to return to its original position. At this time, the locking of the chuck assembly at a certain opening degree is realized.

[0055] Of course, if the volume of the lesion tissue to be clamped is large enough, it is also possible that only one sub-stage locking table 303 passes the limiting locking table 10, and the clamp 3 cannot continue to rotate. At this time, the locking principle is similar to the previous case, and will not be repeated. If the volume of the lesion tissue to be clamped is small enough, it is also possible that all n sub-stage locking tables 303 pass the limiting locking table 10. At this time, the clamp 3 is locked by terminating the cooperation between the locking table 30 and the limiting locking table 10. That is, the termination locking table 30 also passes the limiting locking table 10, and the stop side 301 of the termination locking table 30 abuts against the limiting side 101 of the limiting locking table 10, thereby achieving clamping locking when the clamp 3 is in the smallest closed state.

[0056] It is conceivable that the number of sub-stage locking tables 303 can be any, and the sub-stage locking tables 303 are arranged in the order of the sub-stage locking table 303, the termination locking table 30, and the limiting locking table 10. Figure 1 , the sub-stage locking table 303 and the termination locking table 30, and the limiting locking table 10. Figure 2 and the sub-stage locking table 303 and the termination locking table 30, and the limiting locking table 10. Figure 4 For example, in the embodiments of these drawings, there is only one sub-stage locking table, and there is one stop groove 304 between the one sub-stage locking table and the termination locking table 30, which can provide an additional level of locking, and cooperate with the locking of the termination locking table 30 and the limiting locking table 10, to achieve a total of two levels of locking, that is, a total of two levels of locking of the clamp 3.

[0057] Generally, the volume of the sub-stage locking table 303 can be consistent with the volume of the termination locking table 30, but in order to ensure the clamping and fastening degree as much as possible, as many sub-stage locking tables 303 as possible need to pass the limiting locking table 10, so in a more preferred embodiment, the volume of the sub-stage locking table 303 can be smaller than the volume of the termination locking table 30. In summary, the volume of the sub-stage locking table 303 should be less than or equal to the volume of the termination locking table 30.

[0058] It is conceivable that, similar to the principles of the above embodiments, the multi-stage locking part can also be a plurality of grooves, a plurality of hooks 7 or other forms of clamping structures arranged in series along the swinging direction of the clamp 3 at the tail of the clamp 3. In summary, the multi-stage locking part can ensure that when the clamp 3 swings to different amplitudes, the tail of the clamp 3 can cooperate with the limiting locking table 10 on the connecting seat 1, and rely on the clamping effect of the multi-stage locking part and the limiting locking table 10 to achieve locking of the clamp assembly at different clamping degrees.

[0059] Another embodiment takes the multi-stage locking part arranged on the connecting seat 1 as an example. In this embodiment, the multi-stage locking part includes i sub-stage limiting tables 103, and the i sub-stage limiting tables 103 are arranged in series in the direction away from the limiting side 101 along the non-limiting side 102; the limiting groove 104 is formed between the i sub-stage limiting tables 103 and between the sub-stage limiting table 103 and the adjacent limiting locking table 10, and the limiting groove 104 is used for clamping with the termination locking table 30; wherein i≥1, and i∈N.

[0060] Similar to the aforementioned sub-level locking platform 303, this embodiment proposes to set i sub-level limiting platforms 103 on the connecting seat 1. By engaging the termination locking platform 30 at the tail of the clamping piece 3 with the limiting groove 104 in this embodiment, the clamping assembly can be locked at a certain opening degree.

[0061] The specific principle is as follows: When the clamping piece 3 rotates, the presence of the deformation hole 31 causes the termination locking stage 30 to pass through one or more sub-level limiting stages 103. When it reaches a suitable clamping degree, the reaction force exerted by the diseased tissue on the clamping piece 3 prevents it from continuing to swing. At this time, the termination locking stage 30 will engage in a corresponding limiting groove 104, thus restricting the movement of the clamping piece 3 and preventing it from rotating back to its original position. Engaging in different limiting grooves 104 means that the clamping assembly is locked at different opening degrees.

[0062] Similar to the aforementioned implementation, if the volume of the diseased tissue to be clamped is small enough, it is possible that the termination locking stage 30 may extend beyond all i-level limiting stages 103. In this case, the clamping piece 3 is locked by the cooperation of the termination locking stage 30 and the limiting locking stage 10. That is, the termination locking stage 30 will eventually extend beyond the limiting locking stage 10, and the stop side 301 of the termination locking stage 30 will abut against the limiting side 101 of the limiting locking stage 10, thereby achieving clamping and locking when the clamping piece 3 is in its minimum closed state.

[0063] It is conceivable that the number of sub-level limiting stations 103 can be arbitrary, with additional... Figure 6 and attached Figure 7 For example, in the embodiments shown in these figures, there is only one sub-level limiting stage 103. There is a limiting groove 104 between the sub-level limiting stage 103 and the limiting lock stage 10, which can provide an additional first-level locking. With the locking cooperation between the termination lock stage 30 and the limiting lock stage 10, a total of two levels of locking can be achieved, that is, a total of two opening degrees of locking of the clip 3 can be achieved.

[0064] Generally, the volume of the sub-level limiting stage 103 can be the same as the volume of the limiting locking stage 10. However, in order to ensure the clamping tightness as much as possible, the terminating locking stage 30 needs to pass over as many sub-level limiting stages 103 as possible. Therefore, in a preferred embodiment, the volume of the sub-level limiting stage 103 can be smaller than the volume of the limiting locking stage 10. In short, the volume of the sub-level limiting stage 103 is less than or equal to the volume of the limiting locking stage 10.

[0065] Combining the two different implementations of the aforementioned multi-level locking parts, it can be seen that the limit travel of the clip 3 when it is not locked is the position of the clip 3 when the multi-level locking part on the clip 3 just abuts against the non-limiting side 102 of the limit lock table 10, or the position of the clip 3 when the multi-level locking part on the connecting seat 1 just abuts against the non-stopping side 302 of the termination lock table 30.

[0066] The disengagement of the wire from the clip 3 occurs after the clip 3 is in the locked state, and the principle is that the wire is continuously pulled, and since the clip 3 cannot continue to move at this time, the ball head 23 will continue to exert force on the first deformation wall 33 and the second deformation wall 34, and the first deformation wall 33 and the second deformation wall 34 will continue to deform until the passing size of the connecting hole 32 is greater than the diameter of the ball head 23, and the ball head 23 is thus pulled out, and the wire and the clip 3 are thus separated. Subsequently, the wire will pass through the guide hole 11 and leave the chuck assembly, and at this time, the remaining part of the chuck assembly except the wire will remain in the human body to ensure the clamping of the lesion surface.

[0067] Based on the above principle, the chuck assembly of the embodiment improves the structure of the clip 3, and an integrated hole in the form of a tee joint is provided at the tail of the clip 3, which is connected with the ball head 23 of the wire, thereby combining the clamping control of the clip 3 and the disengagement control between the wire and the clip 3, and avoiding the mutual influence of the clamping operation and the disengagement operation of the clip 3 during the operation. In addition, through the design of the multi-stage locking part, the locking of the clip 3 at different clamping degrees can be realized to meet the clamping needs of different situations, and the practicability and operation convenience are more excellent.

[0068] In addition, the technical solution does not produce debris and other foreign matters, avoids the potential uncertainty that foreign matters remain in the patient's body, and also avoids the additional foreign matter removal operation during the operation.

[0069] According to the existing clamping method operation mode, the chuck assembly needs to be sent to the lesion surface near the endoscope channel, but the width size of the end of the clip 3 is still too large to be inserted into the endoscope channel even if the clip 3 is in the fully closed state. Therefore, in one embodiment, the clip 3 includes a clamping arm 35, and for any clip 3, the head end of the clamping arm 35 on one side is inclined to the clamping arm 35 on the other side of the other clip 3. At this time, when the clip 3 is in the fully closed state, the clamping arms 35 are all inclined inward, and the head end distance between adjacent clamping arms 35 is greatly reduced, so that the width size of the end of the chuck assembly is greatly reduced, thereby facilitating the insertion of the chuck assembly into the endoscope channel. In a preferred embodiment, the inclination angle A of the clamping arm 35 is 0°-30°.

[0070] Since the material of the clamping piece 3 and other parts of the current clamp assembly is mostly metal such as stainless steel, the clamp assembly itself may contain magnetism, which makes it impossible for patients who have undergone endoscopic minimally invasive treatment to undergo MRI examination in a short time and to pass security checks when traveling. Therefore, in a preferred embodiment, the clamping piece 3 and the connecting seat 1 preferably use non-magnetic elastic materials or non-magnetic absorbable materials. Specifically, it includes pure titanium, magnesium alloy, zinc alloy, polylactic acid, polyglycolide, polyglycolide-trimethylene carbonate, polyether ether ketone, polyamide, polyformaldehyde, ultra-high molecular weight polyethylene, polycarbonate, etc. In a preferred embodiment, pure titanium or polyether ether ketone material can be selected as needed. In this way, it can be ensured that the clamp assembly left in the human body can be compatible with MRI examination, i.e. it has no effect on the patient's magnetic resonance examination and has no effect on the security check.

[0071] Embodiment 2

[0072] In combination with the accompanying Figure 14 to the accompanying Figure 16 , this embodiment proposes a clamping and releasing mechanism, which includes a clamp assembly proposed in embodiment 1, and further includes 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, and a limiting table 40 is fixedly arranged on the swivel seat 4. The first swivel 5 is located in the swivel seat 4, and the two ends of the first swivel 5 respectively abut against the limiting table 40. The outer wall of the second swivel 6 is fixedly connected with the inner wall of the first swivel 5, and an extension boss 60 is fixedly arranged on the second swivel 6. The extension boss 60 is provided with a first release hole 61, and the connecting seat 1 is provided with a second release hole 12. The end of the hook 7 is fixedly provided with a hook claw 71, and the hook claw 71 is inserted through the first release hole 61 and the second release hole 12. The hook 7 is further provided with a through hole 72.

[0073] The clamping and releasing mechanism of this embodiment can further realize the connection and release of the clamp assembly and the rest of the hemostatic clip in embodiment 1. The principle is that the through hole 72 is used to provide a channel for connecting the metal wire with the traction mechanism in the hemostatic clip. The swivel seat 4 assembles the first swivel 5 in its interior through the limiting table 40, but still ensures that the first swivel 5 can rotate. The inner wall of the first swivel 5 and the outer wall of the second swivel 6 are fixedly connected by welding or adhesion, or are one-piece processed parts. The hook claw 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, realizing the connection of the second swivel 6 and the connecting seat 1.

[0074] The release process of the chuck assembly occurs after the wire separates from the clamp 3. After separation, the wire continues to move axially until it abuts against the hook 7, exerting a force on it. This force causes the claw 71 to disengage from the second release hole 12 on the connecting seat 1. Clearly, since the chuck assembly relies solely on the engagement of the first and second release holes 61 and 12 with the claw 71, the chuck assembly can be released when the claw 71 disengages from the second release hole 12.

[0075] Example 3

[0076] Combined with appendix Figure 17 This embodiment proposes a hemostatic clip, which, combined with the clamping and releasing mechanism of Embodiment 2, further constitutes a complete hemostatic clip structure. The hemostatic clip of this embodiment also includes a handle 80, a sliding handle 81, a rotating wheel 82, a plastic-coated spring tube 88, and a spindle 83; a finger ring 84 is provided at the end of the handle 80. The plastic-coated spring tube 88 is sleeved on the outside of the spindle 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 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, and a flat section is provided inside the rotating wheel 82. The spindle 83 passes through the flat section and is engaged with the flat section through a conduit 87.

[0077] This embodiment, combining embodiments 1 and 2, constitutes a complete hemostatic clip. The handle 80, plastic-coated spring tube 88, rotating seat 4, and connecting seat 1 are sequentially connected, forming the main structure of the hemostatic clip. 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. That is, the sliding of the sliding handle 81 relative to the handle 80 drives the axial movement of the metal wire via the spindle 83, realizing the opening, closing, locking, and releasing operations of the clamp assembly. The rotating wheel 82, through its internal flat portion cooperating with the spindle 83, transmits its rotation to the clamping plate 3, thereby controlling the rotation of the clamping plate 3. The finger ring 84 at the end of the handle 80 improves the ease of operation of the hemostatic clip, accommodating more gripping methods.

[0078] 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 collet assembly comprising: The utility model relates to a wire clamp, which comprises a connecting seat (1), a wire and two clamping pieces (3). The two clamping pieces (3) intersect and are hinged to the connecting seat (1), and the tail of the clamping piece (3) is provided with a deformation hole (31) and a connecting hole (32), the deformation hole (31) and the connecting hole (32) are in communication to form an integrated hole with a three-way form, 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 wire penetrates through the guide hole (11), the wire comprises two connecting segments (20), the ends of the two connecting segments (20) are fixedly provided with ball heads (23), the passing size of the connecting hole (32) is smaller than the diameter of the ball head (23), the two connecting segments (20) penetrate through the connecting holes (32) on the two clamping pieces (3) respectively, and the ball head (23) is located in the deformation hole (31). The clamping piece (3) is fixedly provided with a terminal locking platform (30) near the connecting hole (32), the terminal locking platform (30) comprises a cutoff side (301) and a non-cutoff side (302); the two sides of the connecting seat (1) are provided with a limiting locking platform (10), the limiting locking platform (10) comprises a limiting side (101) and a non-limiting side (102); the non-cutoff side (302) is used for abutting against the non-limiting side (102), and the cutoff side (301) is used for abutting against the limiting side (101). The clamping piece (3) or the connecting seat (1) is provided with a multi-stage locking part, and the multi-stage locking part is used for locking the clamping piece (3) at different positions. When the multi-stage locking part is arranged on the clamping piece (3), the multi-stage locking part is located on the side of the non-cutoff side (302) of the terminal locking platform (30), and the multi-stage locking part is used for abutting against the limiting locking platform (10). When the multi-stage locking part is arranged on the connecting seat (1), the multi-stage locking part is located on the side of the non-limiting side (102) of the limiting locking platform (10), and the multi-stage locking part is used for abutting against the terminal locking platform (30).

2. A collet assembly according to claim 1, wherein When the multi-stage locking part is arranged on the clamping piece (3), the multi-stage locking part comprises n sub-stage locking platforms (303), the n sub-stage locking platforms (303) are continuously arranged in the direction away from the cutoff side (301) along the non-cutoff side (302); cutoff grooves (304) are formed between the n sub-stage locking platforms (303) and between the terminal locking platform (30) and the adjacent sub-stage locking platform (303), and the cutoff grooves (304) are used for clamping the limiting locking platform (10); wherein n >= 1, and n belongs to N.

3. A collet assembly according to claim 2, wherein The volume of the sub-stage locking platform (303) is less than or equal to the volume of the terminal locking platform (30).

4. The collet assembly of claim 1, wherein When the multi-stage locking part is arranged on the connecting seat (1), the multi-stage locking part comprises i sub-stage limiting platforms (103), i sub-stage limiting platforms (103) are arranged in series along the non-limiting side (102) away from the limiting side (101); the limiting grooves (104) are formed between i sub-stage limiting platforms (103) and between the sub-stage limiting platform (103) and the adjacent limiting and locking platform (10), and the limiting grooves (104) are used for clamping the termination locking platform (30); wherein i≥1, and i∈N.

5. A collet assembly according to claim 4, wherein The volume of the sub-stage limiting platform (103) is less than or equal to the volume of the limiting and locking platform (10).

6. The collet assembly of claim 1, wherein The clamping piece (3) comprises a clamping arm (35), and for any clamping piece (3), the head end of the clamping arm (35) thereof is inclined to the side of the other clamping piece (3) where the clamping arm (35) is located.

7. A collet assembly according to claim 6, wherein The inclination angle A of the clamping arm (35) is 0°-30°.

8. The collet assembly of claim 1, wherein, The clamping piece (3) and the connecting seat (1) are made of non-magnetic elastic material or non-magnetic absorbable material.

9. A clamp release mechanism comprising the collet assembly of any one of claims 1-8, wherein, Further comprising a swivel seat (4), a first swivel ring (5), a second swivel ring (6) and a hook (7); The swivel seat (4) is located on one side of the connecting seat (1), the limiting platform (40) is fixedly arranged on the swivel seat (4), the first swivel ring (5) is located in the swivel seat (4), and the two ends of the first swivel ring (5) respectively abut against the limiting platform (40); The outer wall of the second swivel ring (6) is fixedly connected with the inner wall of the first swivel ring (5), the extending boss (60) is fixedly arranged on the second swivel ring (6), the first release hole (61) is arranged on the extending boss (60), the second release hole (12) is arranged on the connecting seat (1), the end of the hook (7) is fixedly provided with the hook claw (71), the hook claw (71) is inserted through the first release hole (61) and the second release hole (12), and the through hole (72) is further arranged on the hook (7).

10. A haemostatic clip comprising the clip closure release mechanism of claim 9, characterised in that, Further comprising a handle (80), a sliding handle (81), a rotating wheel (82), a plastic-coated spring tube (88) and a mandrel (83); the end of the handle (80) is provided with a finger ring (84); The plastic-coated spring tube (88) is sleeved on the outside of the mandrel (83), one end of the plastic-coated spring tube (88) is fixedly connected with the end of the handle (80), the other end of the plastic-coated spring tube (88) is fixedly connected with the swivel seat (4), the sliding handle (81) is slidingly arranged on the handle (80), one end of the mandrel (83) is fixedly connected with the sliding handle (81) through a fixed tube (85), and the other end of the mandrel (83) is fixedly connected with the metal wire through a connecting tube (86) by penetrating the through hole (72); The rotating wheel (82) is rotationally connected with the handle (80), the rotating wheel (82) is provided with a flat position, and the mandrel (83) penetrates the flat position and is clamped with the flat position through a guide tube (87).

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