A large-opening sliding groove hemostatic clip for digestive endoscopy

Abstract

A large-opening sliding groove hemostatic clamp for digestive endoscope comprises: a receiving tube, a clamping part, a sliding part and a traction part; the clamping part, the sliding part and the traction part are slidably arranged inside the receiving tube; the clamping part is connected to the sliding part, and the sliding part is connected to the traction part; the number of the clamping parts is two and they are symmetrically arranged up and down; the clamping part comprises an arc-shaped clamping piece, an elastic bent rod, a limiting hemisphere and a coupling hole; when the clamping part extends out of the receiving tube, it is in an open state; when the clamping part enters the receiving tube, it is in a closed state; the traction part is used to drive the sliding part, and the sliding part drives the movement of the clamping part; the arc-shaped clamping piece in the clamping part cooperates with the setting mode of the limiting hemisphere to facilitate the extension and retraction of the clamping piece, and the limiting hemisphere abuts against the inner wall of the receiving tube to ensure that the hemostatic clamp clamps the bleeding point more tightly; the connecting tube on the sliding part is equipped with a locking function to further limit the clamping part, thereby ensuring the stability and reliability of the hemostatic clamp.

Description

Technical Field

[0001] The invention relates to the field of medical instruments, in particular to a large-opening sliding groove type hemostatic clip for digestive endoscopes. Background Art

[0002] During digestive tract surgery, tissues may be defective or perforated, which requires safe and effective closure with a hemostatic clip. After being delivered to the target location, the hemostatic clip in the prior art drives the clamp to move through a traction mechanism to achieve the opening, closing and rotation functions, and clamps the tissue at the target location. Afterwards, the clamp is separated from the traction mechanism and remains in the body until the tissue at the target location grows completely to close the defect or perforation at the location, then falls off and is discharged from the body through the digestive tract.

[0003] The existing hemostatic clips are prone to fall off due to the design of the clamp head, which can easily lead to the risk of postoperative bleeding. In addition, during the hemostasis process, it is often necessary to spray drugs on the wound to promote wound healing and reduce inflammation, but the existing hemostatic clips do not have this function and require an additional directional injection structure, which increases the difficulty of operation for medical staff. Therefore, it is a current technical problem to provide a large-opening sliding groove hemostatic clip that is not easy to fall off and has a spraying function. Summary of the invention

[0004] In view of the above technical problems, the present invention provides a large-opening sliding groove hemostatic clamp for digestive endoscopy, comprising: a receiving tube, a clamping part, a sliding part and a traction part;

[0005] The chuck portion, the sliding portion and the traction portion are slidably arranged inside the accommodating tube; the chuck portion is connected to the sliding portion, and the sliding portion is connected to the traction portion; there are two chuck portions and they are symmetrically arranged up and down; when the chuck portion extends out of the accommodating tube, it is in an open state; when the chuck portion enters the accommodating tube, it is in a closed state; the traction portion is used to drive the sliding portion, and the sliding portion drives the movement of the chuck portion.

[0006] Optionally, the accommodating tube includes a first limiting through hole, a limiting portion and a second limiting through hole; the first limiting through hole is symmetrically arranged at the front end of the accommodating tube; the second limiting through hole is symmetrically arranged at the rear end of the accommodating tube; the inner side of the accommodating tube is provided with a hollow cylindrical limiting portion, and the limiting portion extends from the right side of the first limiting through hole to the rear end of the accommodating tube along the axial direction of the accommodating tube; sliding grooves are symmetrically provided on the left and right sides of the limiting portion; openings are symmetrically provided on the upper and lower sides of the limiting portion, and the openings divide the limiting portion into two symmetrical parts; a limiting cylinder is provided inside the first limiting through hole.

[0007] Optionally, the clamping part includes an arc-shaped clamping piece, an elastic bent rod, a limiting hemisphere and a coupling hole; the front part of the arc-shaped clamping piece is provided with clamping teeth, the upper side of the arc-shaped clamping piece is provided with the limiting hemisphere, and the rear part of the arc-shaped clamping piece is connected to the elastic bent rod; the transverse dimension of the arc-shaped clamping piece is smaller than the inner diameter of the accommodating tube, the transverse dimension of the arc-shaped clamping piece is larger than the transverse dimension of the opening and the inner diameter of the limiting part, and the transverse dimension of the elastic bent rod is smaller than the transverse dimension of the opening;

[0008] The elastic bent rod is an elastic rod bent outward, and the end of the elastic bent rod away from the arc-shaped clamping piece is provided with the engaging hole; the clamping part located on the upper side is matched with the clamping teeth of the clamping part located on the lower side.

[0009] Optionally, the sliding part includes a rectangular block, a slide plate, a coupling column and a connecting column; the slide plates are symmetrically arranged on the left and right sides of the rectangular block, and the slide plates can be slidably arranged in the sliding groove and are gap-matched with the sliding groove; the coupling columns are symmetrically arranged on the upper and lower sides of the rectangular block, and the outer diameter of the coupling columns matches the inner diameter of the coupling holes; the connecting column is arranged on the rear side of the rectangular block.

[0010] Optionally, the traction part includes a connecting tube, a traction wire, a connecting hole and a slider; the traction wire is provided at the rear end of the connecting tube, the connecting hole is provided at the middle part of the front end of the connecting tube, and the sliders are provided on the left and right sides of the front end of the connecting tube; the connecting hole and the connecting column are interference fit; the slider is slidably provided in the sliding groove and has a clearance fit with the sliding groove; the outer diameter of the connecting tube matches the inner diameter of the limiting part.

[0011] Optionally, a first circular hole is formed on the engagement column, and a bullet and a first spring are arranged inside the first circular hole; when the arc-shaped clip abuts against the limiting portion, the first circular hole and the second limiting through hole are coaxially arranged; the diameter of the bullet matches the diameter of the second limiting through hole;

[0012] Limiting long plates are arranged on the upper and lower sides of the front end of the connecting pipe; the lateral dimension of the limiting long plate is smaller than the lateral dimension of the opening and larger than the outer diameter of the coupling column; the limiting long plate is arranged between the coupling column and the second limiting through hole.

[0013] Optionally, the large-opening sliding groove hemostatic clamp further includes a fixed sleeve, an adapter and a protective sleeve; the accommodating tube is arranged on the inner side of the fixed sleeve; and the traction part is connected to an external driving component via the adapter and the protective sleeve.

[0014] Optionally, the fixed sleeve includes a hollow cylindrical shell, a locking piece, a sliding spur tooth, a gear and a pressing cylinder; the locking piece, the sliding spur tooth, the gear and the pressing cylinder are all arranged in the hollow cylindrical shell;

[0015] When the traction part is connected to the sliding part, the locking piece locks the accommodating tube through the locking groove on the accommodating tube; when the traction part is disconnected from the sliding part, the traction part presses against the pressing cylinder, the pressing cylinder drives the gear to rotate, and the gear drives the sliding spur teeth to move; the sliding spur teeth drive the locking piece to release the accommodating tube, and the hollow tube in front of the sliding spur teeth extends out of the hollow cylindrical shell and aligns with the clamping position.

[0016] Compared with the prior art, the present invention has achieved the following technical effects:

[0017] 1. The arc-shaped clip is set in conjunction with the limiting hemisphere, which facilitates the extension and retraction of the clip. The limiting hemisphere abuts against the inner wall of the accommodating tube to ensure that the hemostatic clip clamps the bleeding point more tightly; the connecting tube on the sliding part is equipped with a locking function to further limit the clamp head, ensuring the stability and reliability of the hemostatic clip.

[0018] 2. The hemostatic clamp is equipped with a drug injection function combined with physical clamping to form a double hemostatic effect; the integrated setting method improves convenience on the one hand, and on the other hand, the injection position is directly aligned with the hemostasis position to improve injection accuracy and reduce the operating burden on medical staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of a large-opening sliding groove hemostatic clip for digestive endoscopy in closed and open states provided by one embodiment of the present invention;

[0020] Figure 2 A schematic cross-sectional structure diagram of a large-opening sliding groove hemostatic clip for digestive endoscopy provided by one embodiment of the present invention;

[0021] Figure 3 A schematic diagram of the explosion structure of a large-opening sliding groove hemostatic clip for digestive endoscopy provided by one embodiment of the present invention;

[0022] Figure 4 A schematic diagram of the structure of a receiving tube in a large-opening sliding groove hemostatic clip for digestive endoscopy provided by one embodiment of the present invention;

[0023] Figure 5 A schematic diagram of the structure of a clamping portion of a large-opening sliding groove hemostatic clamp for digestive endoscopy provided by one embodiment of the present invention;

[0024] Figure 6 A schematic diagram of the structure of a sliding portion in a large-opening sliding groove hemostatic clip for digestive endoscopy provided by one embodiment of the present invention;

[0025] Figure 7 A schematic diagram of the structure of a traction portion of a large-opening sliding groove hemostatic clip for digestive endoscopy provided by one embodiment of the present invention;

[0026] Figure 8 A schematic diagram of a large-opening sliding groove hemostatic clip for digestive endoscopy provided by an embodiment of the present invention before and after the sliding part is locked;

[0027] Fig. 9 A schematic structural diagram of a large-opening sliding groove hemostatic clip for digestive endoscopy provided by an embodiment of the present invention and equipped with a drug injection structure;

[0028] Fig.10 A schematic diagram of the explosion structure of a large-opening sliding groove hemostatic clip for digestive endoscopy provided by an embodiment of the present invention after being equipped with a drug injection structure;

[0029] Fig.11 A schematic cross-sectional view of a large-opening sliding groove hemostatic clip for digestive endoscopy provided by an embodiment of the present invention after being equipped with a drug injection structure;

[0030] Fig.12 A schematic diagram of a locking member in a large-opening sliding groove hemostatic clip for digestive endoscopy provided by an embodiment of the present invention before and after locking;

[0031] Fig.13 A schematic structural diagram of a hollow cylindrical shell in a large-opening sliding groove hemostatic clip for digestive endoscopy provided by one embodiment of the present invention;

[0032] Fig.14 A schematic structural diagram of a locking member in a large-opening sliding groove hemostatic clip for digestive endoscopy provided by one embodiment of the present invention;

[0033] Fig.15 A schematic diagram of the structure of a sliding straight tooth in a large-opening sliding groove hemostatic clip for digestive endoscopy provided by one embodiment of the present invention;

[0034] Fig.16 The present invention is a schematic structural diagram of a pressure tube in a large-opening sliding groove hemostatic clip for digestive endoscopy provided by one embodiment of the present invention.

[0035] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0036] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0037] like Figure 1-16As shown, an embodiment of the present invention provides a large-opening sliding groove hemostatic clip 1 for digestive endoscopy, comprising: a receiving tube 11, a clamping part 12, a sliding part 13 and a pulling part 14;

[0038] The chuck portion 12, the sliding portion 13 and the traction portion 14 are slidably arranged inside the accommodating tube 11; the chuck portion 12 is connected to the sliding portion 13, and the sliding portion 13 is connected to the traction portion 14; there are two chuck portions 12 and they are symmetrically arranged up and down; when the chuck portion 12 extends out of the accommodating tube 11, it is in an open state; when the chuck portion 12 enters the accommodating tube 11, it is in a closed state; the traction portion 14 is used to drive the sliding portion 13, and the sliding portion 13 drives the movement of the chuck portion 12.

[0039] Optional, such as Figure 4 As shown, the accommodating tube 11 includes a first limiting through hole 111, a limiting portion 112 and a second limiting through hole 113; the first limiting through hole 111 is symmetrically arranged at the front end of the accommodating tube 11; the second limiting through hole 113 is symmetrically arranged at the rear end of the accommodating tube 11; the inner side of the accommodating tube 11 is provided with a hollow cylindrical limiting portion 112, and the limiting portion 112 extends from the right side of the first limiting through hole 111 to the rear end of the accommodating tube 11 along the axial direction of the accommodating tube 11; sliding grooves 114 are symmetrically provided on the left and right sides of the limiting portion 112; openings 115 are symmetrically provided on the upper and lower sides of the limiting portion 112, and the openings 115 divide the limiting portion 112 into two symmetrical parts; a limiting cylinder is provided inside the first limiting through hole 111 (for limiting the stroke of the sliding portion 13 to prevent the sliding portion 13 from detaching from the front end of the accommodating tube 11).

[0040] Optional, such as Figure 5 As shown, the clamping part 12 includes an arc-shaped clamping piece 121, an elastic bent rod 122, a limiting hemisphere 123 and a coupling hole 124; the front part of the arc-shaped clamping piece 121 is provided with clamping teeth, the upper side of the arc-shaped clamping piece 121 is provided with the limiting hemisphere 123, and the rear part of the arc-shaped clamping piece 121 is connected to the elastic bent rod 122; the transverse dimension of the arc-shaped clamping piece 121 is smaller than the inner diameter of the accommodating tube 11, and the transverse dimension of the arc-shaped clamping piece 121 is greater than The transverse dimension of the opening 115 and the inner diameter of the limiting portion 112, and the transverse dimension of the elastic bent rod 122 are smaller than the transverse dimension of the opening 115 (when the arc-shaped clip 121 is received inside the receiving tube 11, the limiting portion 112 abuts against the rear end of the arc-shaped clip 121 to prevent the arc-shaped clip 121 from completely entering the receiving tube 11; the limiting hemisphere 123 abuts against the inner wall of the receiving tube 11 after the arc-shaped clip 121 enters the receiving tube 11 to facilitate the closing of the clip);

[0041] The elastic bent rod 122 is an elastic rod bent outward, and the end of the elastic bent rod 122 away from the arc-shaped clamping piece 121 is provided with the engaging hole 124; the clamping part 12 located on the upper side is matched with the clamping teeth of the clamping part 12 located on the lower side.

[0042] Optional, such as Figure 6 As shown, the sliding portion 13 includes a rectangular block 131, a slide plate 132, a coupling column 133 and a connecting column 134; the slide plates 132 are symmetrically arranged on the left and right sides of the rectangular block 131, and the slide plates 132 are slidably arranged in the sliding groove 114 and are clearance-matched with the sliding groove 114; the coupling columns 133 are symmetrically arranged on the upper and lower sides of the rectangular block 131, and the outer diameter of the coupling columns 133 matches the inner diameter of the coupling hole 124; the connecting column 134 is arranged on the rear side of the rectangular block 131.

[0043] Optional, such as Figure 7 As shown, the traction portion 14 includes a connecting tube 141, a traction wire 142, a connecting hole 143 and a slider 144; the traction wire 142 is provided at the rear end of the connecting tube 141, the connecting hole 143 is provided in the middle of the front end of the connecting tube 141, and the sliders 144 are provided on the left and right sides of the front end of the connecting tube 141; the connecting hole 143 is interference fit with the connecting column 134; the slider 144 is slidably provided in the sliding groove 114 and has a clearance fit with the sliding groove 114; the outer diameter of the connecting tube 141 matches the inner diameter of the limiting portion 112.

[0044] Optionally, a first circular hole 135 is formed on the engagement column 133, and a bullet 136 and a first spring 137 are arranged inside the first circular hole 135; when the arc-shaped clip 121 abuts against the limiting portion 112, the first circular hole 135 and the second limiting through hole 113 are coaxially arranged; the diameter of the bullet 136 matches the diameter of the second limiting through hole 113;

[0045] The upper and lower sides of the front end of the connecting pipe 141 are provided with a limit plate 145; the lateral dimension of the limit plate 145 is smaller than the lateral dimension of the opening 115, and larger than the outer diameter of the engaging column 133; the limit plate 145 is arranged between the engaging column 133 and the second limit through hole 113 (such as Figure 8As shown, when the traction part 14 is connected to the sliding part 13, the bullet 136 is constrained inside the first circular hole 135 by the limiting long plate 145; when the traction part 14 is disconnected from the sliding part 13, the limiting long plate 145 no longer blocks the first circular hole 135, and the bullet 136 is inserted into the second limiting through hole 113 through the action of the first spring 137, thereby realizing the relative fixation of the position of the sliding part 13 and the containing tube 11).

[0046] Optionally, the engaging hole 124 in the clamping part 12 is sleeved on the engaging column 133 in the sliding part 13 , the outer side of the engaging column 133 is provided with a thread, and the upper side of the engaging hole 124 is provided with a locking ring with an internal thread.

[0047] Optional, such as Fig. 9 As shown, the large-opening sliding groove hemostatic clamp 1 also includes a fixed sleeve 2, an adapter 3 and a protective sleeve 4; the accommodating tube 11 is arranged on the inner side of the fixed sleeve 2; and the traction part 14 is connected to the external driving component via the adapter 3 and the protective sleeve 4.

[0048] Optional, such as Figure 13-16 As shown, the fixed sleeve 2 includes a hollow cylindrical shell 21, a locking member 22, a sliding spur tooth 23, a gear 24 and a pressing cylinder 25; the locking member 22, the sliding spur tooth 23, the gear 24 and the pressing cylinder 25 are all arranged in the hollow cylindrical shell 21;

[0049] When the traction part 14 is connected to the sliding part 13, the locking piece 22 locks the accommodating tube 11 through the locking groove 116 on the accommodating tube 11; when the traction part 14 is disconnected from the sliding part 13, the traction part 14 presses against the pressing cylinder 25, the pressing cylinder 25 drives the gear 24 to rotate, and the gear 24 drives the sliding spur teeth 23 to move; the sliding spur teeth 23 drive the locking piece 22 to release the accommodating tube 11, and the hollow tube 231 at the front of the sliding spur teeth 23 extends out of the hollow cylindrical shell 21 and aligns with the clamping position.

[0050] Optionally, the hollow cylindrical shell 21 includes a first accommodating cavity 211, a second accommodating cavity 212, a third opening 213, a fourth limiting circular hole 215, a fifth limiting hole 216 and a gear fixing hole 217; the first accommodating cavity 211, the second accommodating cavity 212 and the third opening 213 are all cylindrical openings; the diameter of the first accommodating cavity 211 is greater than the diameter of the second accommodating cavity 212, and the diameter of the second accommodating cavity 212 is greater than the diameter of the third opening 213; the size of the first accommodating cavity 211 matches the size of the accommodating tube 11; The accommodating tube 11 can be slidably arranged in the first accommodating cavity 211; a locking through hole is opened on the rear side of the first accommodating cavity 211; the fourth limiting circular hole 215 is arranged on the left side of the locking through hole, and the fifth limiting hole 216 is arranged on the right side of the locking through hole, the fifth limiting hole 216 is connected with the fourth limiting circular hole 215, and the fifth limiting hole 216 is connected with the locking through hole and extends to the left side of the locking through hole; the gear fixing hole 217 is arranged between the second accommodating cavity 212 and the fifth limiting hole 216.

[0051] Optionally, the locking member 22 includes a T-shaped top, a second spring and a receiving sleeve; the T-shaped top is made of magnetic material.

[0052] Optionally, the sliding spur tooth 23 includes a hollow tube 231, a base 232, a magnet accommodating hole 233 and a first spur tooth 234; the base 232 is arranged on the lower right side of the hollow tube 231; the magnet accommodating hole 233 is arranged at the end of the lower left side of the base 232, and a magnet is arranged in the magnet accommodating hole 233; the first spur tooth 234 is arranged on the lower right side of the base 232; the hollow tube 231 matches the size of the fourth limiting circular hole 215; the base 232 matches the size of the fifth limiting hole 216.

[0053] Optionally, the pressing cylinder 25 includes a first cylindrical body 251, a second cylindrical body 252, a third cylindrical body 253 and a second spur tooth 254; the second spur tooth 254 is arranged on the upper side of the first cylindrical body 251; the third cylindrical body 253 is arranged on the left side of the first cylindrical body 251, and the second cylindrical body 252 is arranged on the right side of the first cylindrical body 251; the first cylindrical body 251, the second cylindrical body 252 and the third cylindrical body 253 are coaxially arranged;

[0054] The inner diameter of the first cylindrical body 251 is greater than the inner diameter of the second cylindrical body 252, and the inner diameter of the first cylindrical body 251 is equal to the inner diameter of the third cylindrical body 253; the outer diameter of the third cylindrical body 253 is smaller than the outer diameter of the connecting tube 141; the inner diameter of the second cylindrical body 252 is greater than the outer diameter of the traction wire 142; the second cylindrical body 252 is slidably disposed in the third opening 213, and the size thereof matches the third opening 213;

[0055] The gear 24 is meshed and connected with the first spur teeth 234 and the second spur teeth 254 respectively; a return spring is sleeved on the outer side of the second cylindrical body 252.

[0056] Optionally, the hollow tube 231 is a slightly elastic inner curved tube, which bends inward when the hollow tube 231 extends out of the hollow cylindrical shell 21; the right side of the hollow tube 231 is connected to an external drug injection tube; the injected drug can be a hemostatic drug or the like.

[0057] Working principle of large opening sliding groove hemostatic clip:

[0058] 1. Clamping function: The traction part 14 drives the sliding part 13 to move forward or backward, corresponding to the extension (opening) and retraction (closing) of the clamping part 12; the traction part 14 and the sliding part 13 are interference fit, and when the traction part 14 overcomes the interference force and disconnects from the sliding part 13, the clamping part 12 is partially retracted into the accommodating tube 11, and the bullet 136 in the sliding part 13 is inserted into the second limiting through hole 113 of the accommodating tube 11, so as to achieve relative fixation of the positions of the sliding part 13, the clamping part 12 and the accommodating tube 11.

[0059] 2. Unlocking and injection function:

[0060] After the traction part 14 overcomes the interference force and disconnects from the sliding part 13, the traction part 14 continues to move backward, and the traction part 14 presses the pressing cylinder 25. The pressing cylinder 25 overcomes the elastic force of the return spring to drive the gear 24 to rotate, and the gear 24 drives the sliding spur teeth 23 to move; the sliding spur teeth 23 drive the locking member 22 to release the accommodating tube 11 (at this time, the magnet accommodating hole 233 slides to the top of the T-shaped head, sucking the T-shaped head outward);

[0061] After the traction part 14 overcomes the interference force and disconnects from the sliding part 13, the traction part 14 continues to move backward, and the traction part 14 presses the pressing cylinder 25, the pressing cylinder 25 drives the gear 24 to rotate, and the gear 24 drives the sliding spur gear 23 to move. At this time, the hollow tube 231 extends out of the hollow cylindrical shell 21 and aligns with the clamping position, and injection is carried out through the external injection tube.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A large-opening sliding groove hemostatic clip for digestive endoscopy, comprising: A receiving tube, a chuck portion, a sliding portion, and a pulling portion; The chuck portion, the sliding portion and the traction portion are slidably disposed inside the accommodating tube; The chuck part is connected to the sliding part, and the sliding part is connected to the traction part; there are two chuck parts, which are symmetrically arranged up and down; when the chuck part extends out of the receiving tube, it is in an open state; when the chuck part enters the receiving tube, it is in a closed state; the traction part is used to drive the sliding part, and the sliding part drives the movement of the chuck part; The accommodating tube comprises a first limiting through hole, a limiting portion and a second limiting through hole; the first limiting through hole is symmetrically arranged at the front end of the accommodating tube; the second limiting through hole is symmetrically arranged at the rear end of the accommodating tube; the inner side of the accommodating tube is provided with the hollow cylindrical limiting portion, and the limiting portion extends from the right side of the first limiting through hole to the rear end of the accommodating tube along the axial direction of the accommodating tube; sliding grooves are symmetrically provided on the left and right sides of the limiting portion; openings are symmetrically provided on the upper and lower sides of the limiting portion, and the openings divide the limiting portion into two symmetrical parts; a limiting cylinder is provided inside the first limiting through hole; The clamping part comprises an arc-shaped clamping piece, an elastic bent rod, a limiting hemisphere and a coupling hole; the front part of the arc-shaped clamping piece is provided with clamping teeth, the upper side of the arc-shaped clamping piece is provided with the limiting hemisphere, and the rear part of the arc-shaped clamping piece is connected to the elastic bent rod; the transverse dimension of the arc-shaped clamping piece is smaller than the inner diameter of the accommodating tube, the transverse dimension of the arc-shaped clamping piece is larger than the transverse dimension of the opening and the inner diameter of the limiting part, and the transverse dimension of the elastic bent rod is smaller than the transverse dimension of the opening; The elastic bent rod is an elastic rod bent outward, and the end of the elastic bent rod away from the arc-shaped clamping piece is provided with the engaging hole; the clamping part located on the upper side is matched with the clamping teeth of the clamping part located on the lower side; The sliding part comprises a rectangular block, a sliding plate, a coupling column and a connecting column; the sliding plates are symmetrically arranged on the left and right sides of the rectangular block, and the sliding plates are slidably arranged in the sliding groove and are gap-matched with the sliding groove; the coupling columns are symmetrically arranged on the upper and lower sides of the rectangular block, and the outer diameter of the coupling columns matches the inner diameter of the coupling holes; the connecting column is arranged on the rear side of the rectangular block; The traction part comprises a connecting tube, a traction wire, a connecting hole and a slider; the traction wire is arranged at the rear end of the connecting tube, the connecting hole is arranged at the middle of the front end of the connecting tube, and the sliders are arranged on the left and right sides of the front end of the connecting tube; the connecting hole is interference fit with the connecting column; The sliding block is slidably disposed in the sliding groove and is in clearance fit with the sliding groove; the outer diameter of the connecting pipe matches the inner diameter of the limiting portion; The engaging column is provided with a first circular hole, and a bullet and a first spring are arranged inside the first circular hole; when the arc-shaped clip abuts against the limiting portion, the first circular hole and the second limiting through hole are coaxially arranged; the diameter of the bullet matches the diameter of the second limiting through hole; A limiting long plate is provided on the upper and lower sides of the front end of the connecting pipe; the transverse dimension of the limiting long plate is smaller than the transverse dimension of the opening and larger than the outer diameter of the engaging column; the limiting long plate is provided between the engaging column and the second limiting through hole; The large-opening sliding groove hemostatic clip further includes a fixed sleeve, an adapter and a protective sleeve; the accommodating tube is arranged inside the fixed sleeve; the traction part is connected to an external driving component via the adapter and the protective sleeve; The fixed sleeve comprises a hollow cylindrical shell, a locking piece, a sliding spur tooth, a gear and a pressing cylinder; the locking piece, the sliding spur tooth, the gear and the pressing cylinder are all arranged in the hollow cylindrical shell; When the traction part is connected to the sliding part, the locking piece locks the accommodating tube through the locking groove on the accommodating tube; when the traction part is disconnected from the sliding part, the traction part presses against the pressing cylinder, the pressing cylinder drives the gear to rotate, and the gear drives the sliding spur teeth to move; the sliding spur teeth drive the locking piece to release the accommodating tube, and the hollow tube at the front of the sliding spur teeth extends out of the hollow cylindrical shell and aligns with the clamping position.

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