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. Aiming at the technical problem that the existing hemostatic clip has defects, the utility model provides the chuck assembly, the clipping and releasing mechanism and the hemostatic clip, the structure of the clip piece is improved, the tail part of the clip piece is provided with a deformation hole and a connecting through hole which are combined into a whole, 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; through a single matching structure, clamping closing control and separating control of the clamping pieces are combined, the complexity of metal wire movement is reduced, the operability of the hemostatic clip is improved, and mutual influence of clamping closing operation and separating 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 utility model relates to the technical field of hemostatic clamp, specifically to a chuck assembly, clamp closing and releasing 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 closing methods. Among them, the suture clamp closing 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 at present is mainly divided into two types of chute type and bullet type, and the hemostatic clamp of the two types is composed of clamp jaw pipe, clamp piece and stop pin. However, the structure design of the hemostatic clamp does not realize good fusion of clamp closing operation and disengagement operation, and the structure for realizing clamp closing operation and the structure for realizing disengagement operation often interfere with each other, resulting in misoperation in surgery.

[0004] The existing hemostatic clamp also has other defects, that is, fragments are generated after clamp closing and release and too many parts are left in the human body. This causes certain trouble to medical staff who perform suture of the hemostatic clamp wound, and the medical staff needs to perform additional work of taking out the fragments. The generation of fragments increases the workload of the medical staff, increases the operation cost of the patient, and sometimes the fragments are displaced due to the peristalsis of the patient, part of the fragments cannot be completely taken out, and the potential uncertain factors are generated when the fragments are left in the patient's body. UTILITY MODEL CONTENTS

[0005] In view of the technical problems of defects of the existing hemostatic clamp, the utility model provides a chuck assembly, clamp closing and releasing mechanism and hemostatic clamp, which improves the structure of the clamp piece, opens a deformation hole and a connecting through hole combined as one in the tail part of the clamp piece, connects the ball head at the end of the metal wire by cooperation of the deformation hole and the connecting through hole, that is, combines the clamp closing control and the disengagement control of the clamp piece by a single cooperation structure, reduces the complexity of the movement of the metal wire, improves the operability of the hemostatic clamp, and can avoid the mutual influence of the clamp closing operation and the disengagement operation of the clamp piece in surgery. Moreover, the technical scheme will not generate fragments and other foreign matters, avoids the potential uncertain factors generated by the foreign matters left in the patient's body, and avoids the additional foreign matter taking out operation in surgery.

[0006] In order to solve the above problems, the utility model provides a technical scheme for a chuck assembly, which comprises a connecting seat, a wire and two clamping pieces; the two clamping pieces are hinged with the connecting seat, the tail of the clamping piece is fixedly provided with a hanging table, the two sides of the connecting seat are provided with locking tables, and the hanging table is used for clamping with the locking table; the clamping piece is provided with a deformation hole and a connecting through hole near the hanging table, the deformation hole and the connecting through hole are communicated to form an integrated hole in the form of a tee joint, so that the tail of the clamping piece forms a first deformation wall and a second deformation wall; the connecting seat is provided with a guide hole, the wire penetrates through the guide hole, the wire comprises a first segment and a second segment, the ends of the first segment and the second segment are fixedly provided with ball heads, the passing size of the connecting through hole is smaller than the diameter of the ball head, the first segment and the second segment penetrate through the connecting through holes on the two clamping pieces respectively, and the ball heads are located in the deformation holes.

[0007] 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 on which the clamping arm is located.

[0008] Optionally, the inclination angle A of the clamping arm is 0-30°.

[0009] Optionally, the diameter of the guide hole is greater than or equal to the sum of the diameters of the ball heads.

[0010] Optionally, the clamping piece and the connecting seat adopt a non-magnetic elastic material or a non-magnetic absorbable material.

[0011] A clamping and releasing mechanism comprises the chuck assembly, a swivel seat, a first swivel ring, a second swivel ring and a hook; the swivel seat is located on one side of the connecting seat, the swivel seat is fixedly provided with a limiting table, the first swivel ring is located in the swivel seat, and the two ends of the first swivel ring are respectively in abutment with the limiting table; the outer wall of the second swivel ring is fixedly connected with the inner wall of the first swivel ring, the second swivel ring is fixedly provided with an extension boss, the extension boss is provided with a first releasing hole, the connecting seat is provided with a second releasing hole, the end of the hook is fixedly provided with a hook claw, the hook claw is inserted into the first releasing hole and the second releasing hole in a plugged manner, and the hook is further provided with a through hole.

[0012] A hemostatic clamp comprising the clamp closing and releasing mechanism, further comprising a handle, a sliding handle, a rotating ring, a plastic coated spring tube and a mandrel; the end of the handle is provided with a finger ring; 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 rotating ring seat, 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 wire through a connecting tube and passes through the through hole; the rotating ring is rotationally connected with the handle, the rotating ring is provided with a flat position, the mandrel passes through the flat position and is clamped with the flat position through a guide pipe.

[0013] Beneficial effects

[0014] Compared with the prior art, the technical scheme has the beneficial effects that: for the technical problem of defects existing in the prior hemostatic clamp, the clamp head assembly, the clamp closing and releasing mechanism and the hemostatic clamp improve the structure of the clamp piece, the deformation hole and the connecting through hole are arranged at the tail of the clamp piece, the deformation hole and the connecting through hole are connected with the ball head at the end of the wire, that is, the clamp closing control and the disengagement control of the clamp piece are combined through a single matching structure, the complexity of the wire movement is reduced, the operability of the hemostatic clamp is improved, and the mutual influence of the clamp closing operation and the disengagement operation of the clamp piece during the operation can be avoided.

[0015] In addition, the technical scheme does not produce foreign matter such as debris, avoids the potential uncertain factors caused by the foreign matter remaining in the patient's body, and also avoids the additional foreign matter removal operation during the operation. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The structure diagram of the clamp head assembly is provided for the embodiments of the utility model.

[0017] Figure 2 The structure diagram of the clamp piece is provided for the embodiments of the utility model.

[0018] Figure 3 The structure diagram of the clamp piece is provided for the embodiments of the utility model.

[0019] Figure 4 The structure diagram of the clamp piece is provided for the embodiments of the utility model.

[0020] Figure 5 The structure diagram of the clamp piece is provided for the embodiments of the utility model.

[0021] Figure 6 The principle diagram of the clamp head assembly is provided for the embodiments of the utility model.

[0022] Figure 7 The clamping piece closing schematic view one is provided for the utility model embodiment.

[0023] Figure 8 The clamping piece closing schematic view two is provided for the utility model embodiment.

[0024] Figure 9 The structure schematic view one of the clamping closing release mechanism is provided for the utility model embodiment.

[0025] Figure 10 The structure schematic view two of the clamping closing release mechanism is provided for the utility model embodiment.

[0026] Figure 11 The structure schematic view three of the clamping closing release mechanism is provided for the utility model embodiment.

[0027] Figure 12 The structure schematic view of the connecting seat is provided for the utility model embodiment.

[0028] Figure 13 The structure schematic view of the first swivel ring is provided for the utility model embodiment.

[0029] Figure 14 The structure schematic view of the second swivel ring is provided for the utility model embodiment.

[0030] Figure 15 The structure schematic view of the hook is provided for the utility model embodiment.

[0031] Figure 16 The structure schematic view of the hemostat is provided for the utility model embodiment.

[0032] Figure 17 The working schematic view one of the hemostat is provided for the utility model embodiment.

[0033] Figure 18 The working schematic view two of the hemostat is provided for the utility model embodiment. DETAILED DESCRIPTION

[0034] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the drawings and embodiments.

[0035] 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 used 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 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 in the present application and the features in the embodiments 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 based on 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 particular orientation, be constructed and operated in a particular 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. 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 multiple technical solutions in the same embodiment, and the multiple technical solutions of different embodiments can be arranged and combined to form new technical solutions without contradiction or conflict, which are within the scope of the utility model.

[0036] Embodiment 1

[0037] In conjunction with the drawings Figure 1 to the drawings Figure 12 The embodiment provides a chuck 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, and the tail of the clamping piece 3 is fixedly provided with a hanging table 30, and the two sides of the connecting seat 1 are provided with locking tables 10, and the hanging table 30 is used for clamping with the locking table 10.

[0038] The clamping piece 3 is provided with a deformation hole 31 and a connecting through hole 32 near the hanging table 30, the deformation hole 31 and the connecting through hole 32 are communicated to form an integrated hole in the form of a tee, 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, a wire penetrates through the guide hole 11, the wire includes a first segment 21 and a second segment 22, the ends of the first segment 21 and the second segment 22 are fixedly provided with a ball head 23, the passing size of the connecting through hole 32 is smaller than the diameter of the ball head 23, the first segment 21 and the second segment 22 penetrate through the connecting through holes 32 on the two clamping pieces 3 respectively, and the ball head 23 is located in the deformation hole 31.

[0039] The working process of the clamp head assembly of the embodiment is roughly divided into a clamping process of the clamping piece 3 and a disengagement process of the wire and the clamping piece 3. The clamp head assembly of the embodiment realizes the cooperation and connection of the deformation hole 31 and the connecting through hole 32 with the ball head 23 at the end of the wire, and combines the clamping control and the disengagement control of the clamping piece 3.

[0040] The clamp head assembly of the embodiment is a component of a hemostatic clip, 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. In order to simplify the description, the rest of the hemostatic clip is not described in the embodiment, and only the wire will be pulled in the axial direction of the connecting seat 1 by the traction mechanism in the hemostatic clip.

[0041] For the clamping process of the clamping piece 3, the working condition is as follows: in combination with the accompanying drawings Figure 17 When the wire is pulled or pushed, since the passing size of the connecting through hole 32 is smaller than the diameter of the ball head 23, the ball head 23 will drive the two clamping pieces 3 to rotate, so as to realize the opening and clamping of the clamping piece 3.

[0042] In combination with the accompanying drawings Figure 6 When the clamping of the clamping piece 3 is not needed to be realized, the fully closed state of the clamping piece 3 is the state of the clamping piece 3 when the hanging table 30 just contacts the locking table 10. When the clamping piece 3 is in the fully closed state, the state is maintained, and the clamp head assembly can be conveniently inserted into the endoscope forceps channel. After the clamp head assembly is sent to the vicinity of the lesion surface along the endoscope forceps channel, the clamping piece 3 can be reopened or clamped again through the pulling action of the traction mechanism on the wire, so as to clamp the lesion surface. After the clamping operation on the lesion surface is completed, the clamping piece 3 needs to be locked.

[0043] When the clamping locking of the clamping piece 3 needs to be realized, the wire needs to be continuously pulled back, and when the hanging table 30 on the clamping piece 3 is in contact with the locking table 10, the wire is still continuously pulled, so that the hanging table 30 is extruded with the locking table 10. Since the deformation hole 31 and the connecting through hole 32 are in communication and constitute an integrated hole with a three-way form, the first deformation wall 33 and the second deformation wall 34 will be deformed, and the deformation hole 31 will also be deformed synchronously. It can be understood that the existence of the deformation hole 31 constitutes the premise that the first deformation wall 33 and the second deformation wall 34 can be deformed. When the hanging table 30 passes the locking table 10, the hanging table 30 is no longer extruded with the locking table 10, 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 table 10 can realize the blocking effect of the hanging table 30, avoid the opening of the clamping piece 3, and thus ensure that the clamping piece 3 is in the clamping locking state.

[0044] For the separation process of the wire and the clamping piece 3, the working condition is as follows: after the hanging table 30 passes the locking table 10, the clamping piece 3 is in the clamping locking state, and the wire is continuously pulled, the ball head 23 on the first section 21 and the second section 22 will continue to exert force on the first deformation wall 33 and the second deformation wall 34, the first deformation wall 33 and the second deformation wall 34 will continue to deform, until the passing size of the connecting through hole 32 is greater than the diameter of the ball head 23, the ball head 23 is thus pulled out, and the wire and the clamping piece 3 are thus separated. Subsequently, the wire will pass through the guide hole 11 and leave the clamp assembly. It should be noted that the wire is connected with the ball head 23, and the ball head 23 is connected with the first section 21 and the second section 22, so the wire will not be separated from the clamp assembly until the ball head 23 is pulled out. Figure 18 At this time, except for the wire, the rest of the clamp assembly will remain in the human body to ensure the clamping of the lesion surface.

[0045] Based on the above process description, the clamp assembly of the embodiment improves the structure of the clamping piece 3, opens the deformation hole 31 and the connecting through hole 32 in combination at the tail of the clamping piece 3, and connects the ball head 23 at the end of the wire through the deformation hole 31 and the connecting through hole 32, that is, through a single matching structure, the clamping control and separation control of the clamping piece 3 are combined, the complexity of the movement of the wire is reduced, the operability of the hemostat is improved, and the clamping operation and the separation operation of the clamping piece 3 in the operation are avoided.

[0046] In addition, the technical solution will not produce debris and other foreign matters, avoiding the potential uncertainty that foreign matters left in the patient's body will produce, and avoiding the additional foreign matter removal operation in the operation. It should be noted that the foreign matter here refers to the foreign matter generated by the separation of the clamping piece 3 and the wire (there is no foreign matter in the present embodiment), but the rest of the clamp assembly except the wire will remain in the human body to ensure the clamping of the lesion surface, which belongs to the necessary operation of the hemostatic clamping method.

[0047] In combination with the above description, the wire is connected with the ball head 23, and the ball head 23 is connected with the first section 21 and the second section 22, so the wire will not be separated from the clamp assembly until the ball head 23 is pulled out. Figure 7According to the foregoing description, the clip head assembly needs to be sent to the vicinity of the lesion surface along the endoscope channel, and even if the clip 3 is in a fully closed state, the width of the end of the clip head assembly is still too large to be inserted into the endoscope channel.

[0048] Therefore, in combination with the accompanying drawings Figure 2 and the accompanying drawings Figure 8 In a further embodiment, the clip 3 comprises a clip arm 35, and for any clip 3, the head end of the clip arm 35 on one side is inclined to the clip arm 35 on the other side. At this time, when the clip 3 is in a fully closed state, the clip arms 35 are all inclined inward, and the distance between the head ends of adjacent clip arms 35 is greatly reduced, so that the width of the end of the clip head assembly is greatly reduced, thereby facilitating the insertion of the clip head assembly into the endoscope channel. In combination with the accompanying drawings Figure 2 In a preferred embodiment, the inclination angle A of the clip arm 35 is 0°-30°.

[0049] According to the foregoing description, the wire will eventually pass through the guide hole 11 and leave the clip head assembly. However, due to the presence of the ball head 23, interference with the inner wall of the guide hole 11 may occur, causing the wire to be disconnected 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, avoiding being stuck.

[0050] Since the current clip head assembly, the material of the clip 3 and other parts is mostly metal such as stainless steel, which may cause the clip head assembly itself to have magnetism, which makes it impossible for patients who have undergone endoscopic minimally invasive treatment to undergo MRI examination within 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 material or non-magnetic absorbable material. 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 when the clip head assembly is left in the human body, it can be compatible with MRI examination, i.e. it has no effect on the patient's magnetic resonance examination and has no effect on security checks.

[0051] Example 2

[0052] In combination with the accompanying drawings Figure 9 to the accompanying drawings Figure 15The embodiment provides a clamping and releasing mechanism, comprising the chuck assembly in the embodiment 1, a swivel base 4, a first swivel 5, a second swivel 6 and a hook 7. The swivel base 4 is located on one side of the connecting base 1, the swivel base 4 is fixedly provided with a limiting table 40, the first swivel 5 is located in the swivel base 4, and the two ends of the first swivel 5 are respectively abutted with the limiting table 40. The outer wall of the second swivel 6 is fixedly connected with the inner wall of the first swivel 5, the second swivel 6 is fixedly provided with an extension boss 60, the extension boss 60 is provided with a first releasing hole 61, the connecting base 1 is provided with a second releasing hole 12, the end of the hook 7 is fixedly provided with a hook claw 71, the hook claw 71 is inserted into the first releasing hole 61 and the second releasing hole 12, and the hook 7 is further provided with a through hole 72.

[0053] The clamping and releasing mechanism can realize the connection and release of the chuck assembly and the rest of the hemostat in the embodiment 1. The principle is that the through hole 72 is used for providing a channel for connecting the wire with the traction mechanism in the hemostat, the swivel base 4 is used for assembling the first swivel 5 in the swivel base 4 through the limiting table 40, but the first swivel 5 can still rotate, the inner wall of the first swivel 5 and the outer wall of the second swivel 6 are fixedly connected through welding or adhesion or are directly integrally formed. The hook claw 71 on the hook 7 passes through the first releasing hole 61 on the extension boss 60 and the second releasing hole 12 on the connecting base 1 at the same time, and the connection between the second swivel 6 and the connecting base 1 is realized.

[0054] The releasing process of the chuck assembly is after the wire is separated from the clamping piece 3, the wire is separated from the clamping piece 3, then continues to move in the axial direction until abutting against the hook 7 and generating an acting force on the hook 7, the acting force causes the hook claw 71 to be separated from the second releasing hole 12 on the connecting base 1. Obviously, since the chuck assembly is connected with the hook claw 71 only through the cooperation of the first releasing hole 61 and the second releasing hole 12, when the hook claw 71 is separated from the second releasing hole 12, the chuck assembly can be released.

[0055] Embodiment 3

[0056] Combined with the drawings Figure 16 The embodiment provides a hemostat, the clamping and releasing mechanism in the embodiment 2 is combined, and the hemostat further comprises a handle 80, a sliding handle 81, a rotating wheel 82, a plastic-coated spring pipe 88 and a mandrel 83; the end of the handle 80 is provided with a finger ring 84. The plastic-coated spring pipe 88 is sleeved outside the mandrel 83, one end of the plastic-coated spring pipe 88 is fixedly connected with the end of the handle 80, the other end of the plastic-coated spring pipe 88 is fixedly connected with the swivel base 4, the sliding handle 81 is slidably arranged on the handle 80, one end of the mandrel 83 is fixedly connected with the sliding handle 81 through a fixed pipe 85, the other end of the mandrel 83 is fixedly connected with the wire through a connecting pipe 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, the mandrel 83 penetrates the flat position and is clamped with the flat position through a guide pipe 87.

[0057] The sliding handle 81 and the core shaft 83 and other related structures in this embodiment constitute a traction mechanism capable of pulling the metal wire, that is, the sliding of the sliding handle 81 relative to the handle 80 can drive the metal wire to move axially through the core shaft 83, thereby realizing the opening and closing, closing locking and disengaging release of the chuck assembly. The rotating wheel 82 can transmit its rotation to the clamping piece 3 through the cooperation of the internal flat position and the core shaft 83, thereby controlling the rotation of the clamping piece 3. The finger ring 84 at the end of the handle 80 can improve the operation convenience of the hemostat, and can meet more gripping modes.

[0058] The above describes the utility model and its embodiments in a schematic manner, which is not restrictive, and the drawings only show one of the embodiments of the utility model, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired thereby, without departing from the creative purpose of the utility model, similar structural modes and embodiments are designed without creativity, which should all belong to the protection scope of the utility model.

Claims

1. A chuck assembly, characterized in that, It includes a connector (1), a metal wire, and two clips (3); The two clamping pieces (3) intersect and are hinged to the connecting seat (1). A hanging platform (30) is fixedly provided at the tail of the clamping piece (3). Locking platforms (10) are provided on both sides of the connecting seat (1). The hanging platform (30) is used to engage with the locking platform (10). A deformation hole (31) and a connecting through hole (32) are provided near the hanging platform (30). The deformation hole (31) and the connecting through hole (32) are connected to form a three-way integrated hole, so that the tail of the clamping piece (3) forms a first deformation wall (33) and a second deformation wall (34). The connecting seat (1) is provided with a guide hole (11), and the metal wire passes through the guide hole (11). The metal wire includes a first segment (21) and a second segment (22). The ends of the first segment (21) and the second segment (22) are fixedly provided with ball heads (23). The through size of the connecting through hole (32) is smaller than the diameter of the ball head (23). The first segment (21) and the second segment (22) pass through the connecting through holes (32) on the two clamps (3) respectively. The ball head (23) is located in the deformation hole (31).

2. The chuck assembly according to claim 1, characterized in that, The clip (3) includes a clip arm (35), and for any clip (3), the head end of the clip arm (35) is inclined toward the side where the clip arm (35) is located on the other clip (3).

3. A chuck assembly according to claim 2, characterized in that, The tilt angle A of the clamping arm (35) is 0° to 30°.

4. A chuck assembly 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 head (23).

5. A chuck assembly according to any one of claims 1-4, characterized in that, The clip (3) and the connecting seat (1) are made of non-magnetic elastic material or non-magnetic absorbable material.

6. A clamping and releasing mechanism, comprising a clamp assembly as described in any one of claims 1-5, characterized in that, It also includes a swivel base (4), a first swivel (5), a second swivel (6), and a hook (7); The rotating seat (4) is located on one side of the connecting seat (1). A limiting platform (40) is fixedly provided on the rotating seat (4). The first rotating ring (5) is located inside the rotating seat (4), and the two ends of the first rotating ring (5) abut against the limiting platform (40) respectively. The outer wall of the second rotating ring (6) is fixedly connected to the inner wall of the first rotating ring (5). An extension boss (60) is fixedly provided on the second rotating ring (6). A first release hole (61) is provided on the extension boss (60). A second release hole (12) is provided on the connecting seat (1). A hanging claw (71) is fixedly provided at the end of the hook (7). The hanging claw (71) passes through the first release hole (61) and is inserted into the second release hole (12). A through hole (72) is also provided on the hook (7).

7. A hemostatic clip, comprising the clamping and releasing mechanism of claim 6, characterized in that, It also includes a handle (80), a sliding handle (81), a rotating wheel (82), a plastic-coated spring tube (88), and a spindle (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 to the end of the handle (80), and the other end of the plastic-coated spring tube (88) is fixedly connected to the rotating seat (4). The sliding handle (81) is slidably disposed on the handle (80). One end of the mandrel (83) is fixedly connected to the sliding handle (81) through the fixing tube (85), and the other end of the mandrel (83) passes through the through hole (72) and is fixedly connected to the metal wire through the connecting tube (86). The rotating wheel (82) is rotatably connected to the handle (80). A flat part is provided inside the rotating wheel (82). The spindle (83) passes through the flat part and is engaged with the flat part through a conduit (87).

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