A one-sided opening and closing hemostatic clip and method of use

Abstract

The application discloses a unilateral opening and closing hemostatic clamp and a using method. The hemostatic clamp comprises a fixed arm and a movable arm which constitute a clamp head, and a driving device used for driving the movable arm to rotate relative to the fixed arm. The driving device comprises an intermediate baffle fixedly installed in the fixed arm and a pull rod mechanism used for pulling the movable arm to rotate relative to the intermediate baffle. The movable arm comprises a rotating handle which is rotationally connected with the intermediate baffle. A guide groove used for cooperating with the pull rod mechanism is arranged on the rotating handle. A through groove is formed on the fixed arm at a position corresponding to a rotating area of the rotating handle. An insurance mechanism used for limiting the moving distance of the pull rod mechanism is arranged on the intermediate baffle. The insurance mechanism can avoid the release of the clamp head caused by misoperation, thereby increasing the safety of operation. In the state that the insurance mechanism is not opened, the hemostatic clamp can be used as a hemostatic forceps, one machine is used in multiple ways, and the exchange and use of machines in a surgical process are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hemostatic clips, in particular to a unilateral opening and closing hemostatic clip and a use method thereof. BACKGROUND

[0002] With the development of minimally invasive technology at home and abroad, some digestive diseases can be treated minimally invasively under an endoscope. In the process of ESD endoscopic surgery, digestive tract mucosa defect suture, digestive tract hemorrhage and perforation are the most common problems. Different hemostatic clips are selected according to the size of the wound. Small wounds generally use harmonious clips, and larger wounds or perforations use OTSC anastomosis clips. However, the two sides of the wound need to be pulled and different foreign body forceps with different openings are needed. In order to reduce the exchange of instruments during the operation and the occurrence of the condition that the foreign body forceps are mistakenly clamped during the OTSC operation, a hemostatic clip with a safety device is needed in clinical practice, which has the functions of forceps and clips, and improves the operation efficiency. SUMMARY

[0003] Technical purpose: in view of the deficiencies of the existing hemostatic clips, the present application discloses a unilateral opening and closing hemostatic clip and a use method thereof, which can control the release of the chuck according to the use requirements.

[0004] Technical scheme: in order to achieve the above technical purpose, the present application adopts the following technical scheme:

[0005] A unilateral opening and closing hemostatic clip, comprising a fixed arm and a movable arm constituting a chuck, and a driving device for driving the movable arm to rotate relative to the fixed arm, the driving device comprising an intermediate baffle fixedly installed in the fixed arm and a pull rod mechanism for pulling the movable arm to rotate relative to the intermediate baffle, the movable arm comprising a rotating handle, the rotating handle being rotatably connected with the intermediate baffle, a guide groove for cooperating with the pull rod mechanism being arranged on the rotating handle, the pull rod mechanism exerting a force on the movable arm through the guide groove to drive the movable arm to rotate, a through groove being formed in the fixed arm at a position corresponding to the rotating region of the rotating handle; a limiting groove for limiting the driving end of the pull rod mechanism cooperating with the guide groove is arranged on the intermediate baffle.

[0006] Preferably, the pull rod mechanism of the present application comprises a pull rod body, a pull rope, an operation handle and a sliding block, the sliding block being slidably arranged on the operation handle, the pull rope being arranged in the operation handle, one end of the pull rope being connected with the sliding block, and the other end of the pull rope being connected with the end of the pull rod body; the driving end of the pull rod body is connected with the limiting groove and the guide groove through a movable shaft arranged therein, a first opening groove for disconnecting the movable shaft after the pull rope is pulled into place is arranged at the end of the pull rod body; the end of the fixed arm is detachably connected with the operation handle, a elastic limiting mechanism for releasing the chuck as a whole after the movable arm is rotated into place is arranged at the connection position and cooperates with the pull rod body; an insurance mechanism for limiting the pulling position of the pull rod body and preventing the release of the chuck is arranged on the intermediate baffle.

[0007] Preferably, the operating handle end of the application is connected with the fixing arm through the connecting pipe, the end of the fixing arm is sleeved outside the end of the connecting pipe, the elastic limiting mechanism comprises a V-shaped hook, the hook end of the V-shaped hook is arranged on the connecting pipe and the fixing arm to limit the connecting pipe and the fixing arm, and the boss for cooperating with the V-shaped hook to exert the pulling force on the V-shaped hook is arranged on the pull rod body.

[0008] Preferably, the V-shaped hook of the application comprises an elastic connecting segment provided with a hook at the end and inclined outward to form a horn structure and a straight rod segment parallel to the pulling direction of the pull rod mechanism, the end of the straight rod segment is connected with the end of the straight rod segment through an arc structure, and the boss on the pull rod body is matched with the arc structure to exert the pulling force on the V-shaped hook as a whole.

[0009] Preferably, the first through hole and the second through hole matched with the V-shaped hook are respectively arranged on the connecting pipe and the fixing arm, the diameter of the second through hole is larger than that of the first through hole, and the first through hole adopts a flared structure with the diameter gradually increasing from inside to outside.

[0010] Preferably, the safety mechanism of the application comprises a limiting pull ring arranged on the middle baffle, the limiting pull ring is located on the moving path of the pull rod body when the pull rod body is pulled, and the step matched with the limiting pull ring to limit the axial position of the pull rod body is arranged on the pull rod body; the limiting pull ring is connected with the safety pull rope arranged on the operating handle, and the second open slot for being separated from the limiting pull ring when the limiting pull ring is pulled through the safety pull rope is arranged on the middle baffle at the matched position of the limiting pull ring.

[0011] Preferably, the pull rod body of the application is located on one side of the plate surface of the middle baffle, the pull rod baffle matched with the pull rod body to limit the radial displacement between the pull rod body and the middle baffle is arranged on the pull rod body, the pull rod baffle is located on the side of the middle baffle away from the pull rod body, the connecting shaft is arranged between the pull rod baffle and the pull rod body, the second limiting slot matched with the connecting shaft is arranged on the middle baffle, and the third open slot for being separated from the connecting shaft when the release chuck is released is arranged on one side of the second limiting slot along the moving direction of the pull rod body.

[0012] The application discloses a use method of the unilateral opening and closing hemostatic clip, the rotating handle on the movable arm is pulled through the pull rod mechanism, the driving end of the pull rod mechanism moves along the limiting slot, the matched position of the driving end and the guide groove on the rotating handle changes, the rotating handle drives the movable arm to rotate as a whole relative to the fixed arm, the opening and closing of the chuck are realized, the action stroke of the pull rod mechanism is limited through the safety mechanism, and whether the chuck is released is controlled through the safety mechanism.

[0013] Preferably, when the clamp is released, the safety mechanism is opened, the limit of the pull rod body is cancelled, the pull rod body can continue to be pulled by the pull rope, the V-shaped hook of the elastic limit mechanism is pulled during the movement of the pull rod body, the hook end of the V-shaped hook is separated from the fixed arm, and the movable shaft is separated from the first opening slot and the pull rod body, so that the release of the clamp is completed.

[0014] Preferably, when the safety mechanism limits the pull rod mechanism, the limit of the pull rod body is blocked by the limit pull ring of the safety mechanism, the radial movement of the pull rod body is limited by the pull rod baffle on the pull rod body, and the limit of the pull rod body by the limit pull ring is maintained.

[0015] Beneficial effects: the unilateral opening and closing hemostatic clamp and the use method have the following beneficial effects:

[0016] 1. The intermediate baffle limits the movement track of the pull rod mechanism in the present application, compared with the direct pulling mode by the steel wire rope, the present application can realize accurate control of the rotation of the movable arm by controlling the movement track of the pull rod mechanism, and the operation precision is improved.

[0017] 2. The safety mechanism for limiting the movement distance of the pull rod mechanism is arranged on the intermediate baffle, so that the release of the clamp caused by misoperation can be avoided, the safety of operation is improved, the hemostatic clamp can be used as hemostatic forceps in the state that the safety mechanism is not opened, one instrument is used in multiple ways, and the exchange and use of instruments during the operation are reduced.

[0018] 3. The clamp is connected with the connecting pipe of the operation handle through the V-shaped hook, and the V-shaped hook can act synchronously to release the clamp under the action of the pull rod body, the complexity of the release structure is reduced, and the operation is facilitated.

[0019] 4. The V-shaped hook of the present application is provided with a straight rod section, so that the lever arm of the pull force on the elastic connecting section can be increased, the movement of the hook is guided through the variable-diameter structure of the first through hole, and the required acting force for separating the V-shaped hook from the connecting pipe and the fixed arm is reduced.

[0020] 5. The safety mechanism limits the pull rod body through the limit pull ring, the pull rod baffle is arranged on the pull rod body, the radial movement of the pull rod body is limited through the pull rod baffle, so that the pull rod body moves along the external profile of the limit pull ring under the action of the pull force of the pull rope, the range of the limit pull ring is separated, the situation of accidental release of the clamp is avoided, and the reliability of the safety mechanism is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below.

[0022] Figure 1 The overall structure of the hemostatic clamp of the present application is shown in the figure;

[0023] Figure 2 The structure of the clamp head of the hemostatic clamp of the present application is shown in the figure;

[0024] Figure 3 The structure of the clamp head of the hemostatic clamp of the present application is shown in the figure;

[0025] Figure 4 The structure of the clamp head of the hemostatic clamp of the present application is shown in the figure;

[0026] Figure 5 The structure of the clamp head of the hemostatic clamp of the present application is shown in the figure;

[0027] Wherein, 1-fixed arm, 2-movable arm, 3-intermediate baffle, 4-rotary handle, 5-guide groove, 6-limiting groove, 7-pull rod main body, 8-pull rope, 9-operation handle, 10-sliding block, 11-movable shaft, 12-first opening slot, 13-connection pipe, 14-V-shaped hook, 15-elastic connection section, 16-straight rod section, 17-connection sleeve, 18-first through hole, 19-second through hole, 20-limiting pull ring, 21-step, 22-safety pull rope, 23-second opening slot, 24-pull rod baffle, 25-connection shaft, 26-second limiting groove, 27-third opening slot. DETAILED DESCRIPTION

[0028] Reference will now be made in detail to embodiments of the present disclosure, one or more examples of which are set forth herein below. Each embodiment and example is provided by way of explanation of the present disclosure, not limitation. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made in the present disclosure without departing from the scope or spirit of the present disclosure. For instance, features illustrated or described as part of one embodiment can be used with another embodiment to yield still a further embodiment. It is intended that the present disclosure cover such modifications and variations as come within the scope or spirit of the appended claims and their equivalents. Other objects, features, and aspects of the present disclosure will become apparent to one of ordinary skill in the art upon examination of the following detailed description. It is intended that any patent issued on the present disclosure will cover at least some of the alternatives combinations of the technology described herein with at least some of the alternatives combinations of the technology described in any such currently or later- filed applications designated as related thereto. It is intended that the present disclosure encompass all techniques substantially similar to those described herein.

[0029] As Figures 1-5The application discloses a unilateral opening and closing hemostatic clamp, which comprises a fixed arm 1 and a movable arm 2 which constitute a clamp head, and a driving device for driving the movable arm 2 to rotate relative to the fixed arm 1, wherein the driving device comprises an intermediate baffle 3 fixedly installed in the fixed arm 1 and a pull rod mechanism for pulling the movable arm 2 to rotate relative to the intermediate baffle 3, the movable arm 2 comprises a rotating handle 4 which is rotationally connected with the intermediate baffle 3, a guide groove 5 for cooperating with the pull rod mechanism is arranged on the rotating handle 4, the pull rod mechanism drives the movable arm 2 to rotate by exerting a force on the movable arm 2 through the guide groove 5, and a through groove is formed in the fixed arm 1 at a position corresponding to a rotating region of the rotating handle 4; a limiting groove 6 for limiting a driving end of the pull rod mechanism which cooperates with the guide groove 5 is arranged on the intermediate baffle 3.

[0030] When the pull rod mechanism moves, the movement track of the driving end of the pull rod mechanism is limited by the limiting groove 6, so that the opening and closing operation of the clamp head is stable, the pull rod mechanism comprises a pull rod main body 7, a pull rope 8, an operation handle 9 and a sliding block 10, the sliding block 10 is slidably arranged on the operation handle 9, the pull rope 8 is arranged in the operation handle 9 and connected with the sliding block 10 at one end and with the end of the pull rod main body 7 at the other end, a steel wire rope is used for facilitating assembly of the pull rope, the pull rod main body 7 is connected with a connecting sleeve 17 through the end embedded in the connecting sleeve 17, so that the pulling force is smoothly transmitted, the driving end of the pull rod main body 7 is connected with the limiting groove 6 and the guide groove 5 through a movable shaft 11 arranged therein, a first opening groove 12 for disconnecting the movable shaft 11 after the pull rope 8 is pulled to a position is arranged at the end of the pull rod main body 7, the end of the operation handle 8 is detachably connected with the fixed arm 1, and an elastic limiting mechanism for releasing the clamp head as a whole after the movable arm 2 is rotated to a position is arranged at the connection position and cooperates with the pull rod main body 7, an insurance mechanism for limiting the pulling position of the pull rod main body 7 and preventing the clamp head from being released is arranged on the intermediate baffle 3, the insurance mechanism can prevent the clamp head from being released due to misoperation, the clamp head can be released by actively opening the insurance mechanism, in the state that the insurance mechanism is not opened, the hemostatic clamp can be used as a hemostatic forceps and can provide a large clamping force, so that one instrument can be used for multiple purposes and the instrument does not need to be frequently replaced, when the clamp head needs to be released, the insurance mechanism is opened, and the elastic limiting mechanism is driven to move by the pull rod main body 7, so that the fixed arm 1 of the clamp head is separated from the operation handle 9.

[0031] Specifically, the end of the operating handle 9 is connected with the fixed arm 1 through the connecting pipe 13, the end of the fixed arm 1 is sleeved outside the end of the connecting pipe 13, the elastic limiting mechanism comprises a V-shaped hook 14, the hook end of the V-shaped hook 14 is penetrated on the connecting pipe 14 and the fixed arm 1 to limit the connecting pipe 14 and the fixed arm 1, the boss for cooperating with the V-shaped hook 14 to exert the pulling force on the V-shaped hook is arranged on the pull rod body 7; the safety mechanism comprises a limiting pull ring 20 penetrated on the middle baffle 3, the limiting pull ring 20 is located on the moving path of the pull rod body 7 when the pull rod body 7 is pulled, the step 21 for cooperating with the limiting pull ring 20 to limit the axial position of the pull rod body 7 is arranged on the pull rod body 7; the limiting pull ring 20 is connected with the safety pull rope 22 penetrated on the operating handle 9, the second opening groove 23 for being separated from the limiting pull ring 20 when the limiting pull ring 20 is pulled through the safety pull rope 22 is arranged at the cooperation position of the limiting pull ring 20 and the middle baffle 3.

[0032] The conventional V-shaped hook structure needs a large pulling force to be separated, thereby increasing the operation difficulty, and also easily affecting the release operation of the hemostatic clip, therefore, the structure of the V-shaped hook is improved in the application, as shown in the figure, Figure 5 As shown in the figure, the V-shaped hook 14 comprises the elastic connecting section 15 provided with the hook at the end and forming a horn-shaped structure by being inclined to the outside and the straight rod section 16 parallel to the pulling direction of the pull rod mechanism, the arc-shaped structure is used to transition between the ends of the straight rod section 16, the pulling force is exerted on the whole V-shaped hook 14 through the cooperation of the arc-shaped structure and the boss on the pull rod body 7; the straight rod end 16 can increase the force arm generated by the pulling force, thereby the elastic connecting section 15 can be driven to shrink inward without a large pulling force, and the separation between the fixed arm and the connecting pipe is realized; as preferred, the first through hole 18 and the second through hole 19 cooperating with the V-shaped hook are respectively arranged on the connecting pipe 13 and the fixed arm 1, the diameter of the second through hole 19 is larger than that of the first through hole 18, the first through hole 18 adopts the flared structure with the diameter gradually increasing from inside to outside; the first through hole 18 and the second through hole 19 are arranged, so that the hook only plays the role of the positioning pin, the acting force between the hook and the connecting pipe and the fixed arm is reduced, and the first through hole 18 can guide the hook, further reducing the acting force required for the release of the chuck.

[0033] The application uses the limiting pull ring 20 to limit the pull rod body 7, when the pulling force is large, the pull rod body 7 will move along the circular arc line outside the limiting pull ring 20, thereby causing the limiting pull ring 20 to fail to play a good limiting effect in this case, therefore, the pull rod body 7 of the application is located at one side of the middle baffle 3 plate, a pull rod baffle 24 is arranged on the pull rod body 7 and cooperates with the pull rod body 7 to limit the radial displacement between the pull rod body 7 and the middle baffle 3, the pull rod baffle 24 is located at the side of the middle baffle 3 away from the pull rod body 7, the end of the pull rod baffle 24 close to the middle baffle 3 is connected with the pull rod body 7 through the penetrating connecting shaft 25, the other end is fixedly connected with the pull rod body 7, and a boss for cooperating with the V-shaped hook is formed at the connecting position; a second limiting groove 26 cooperating with the connecting shaft 25 is arranged on the middle baffle 3, and a third opening groove 27 for being disengaged from the connecting shaft 25 when the release clamp is released is arranged at one side of the second limiting groove 26 along the moving direction of the pull rod body 7; the pull rod baffle 24 and the pull rod body 7 are arranged on both sides of the middle baffle 3 plate, and the middle baffle 3 is a fixed component, therefore, the radial position of the pull rod body 7 can be limited, the reliability of the structure is enhanced, and the moving track of the pull rod body 7 can be accurately guided and limited in cooperation with the limiting groove 6.

[0034] The application also provides a use method of the unilateral opening and closing hemostatic clamp, when the hemostatic clamp needs to be used for hemostasis clamping, the operator pulls the pull rope 8 through the sliding block 10, the sliding block 10 is in a middle concave cylindrical structure for convenient operation and stress, and the operator can easily exert the pulling force by clamping the sliding block with fingers; the pull rope 8 moves the pull rod body 7 through the connecting sleeve 17, the pull rod baffle 24 moves synchronously, the limiting groove 6 and the second limiting groove 26 guide the movement of the movable shaft 11 and the connecting shaft 25 respectively, and the movable shaft 11 drives the rotating and 4 to rotate, thereby realizing the closing of the clamp, and after moving to the position, the pull rod body 7 is limited by the limiting pull ring 20, at this time, the hemostatic clamp can be used as hemostatic forceps, and the problem of accidental release of the clamp due to misoperation does not need to be worried about; when the clamp needs to be released, the safety pull rope 22 is pulled, the limiting pull ring 20 is disengaged from the middle baffle 3 through the second opening groove 23, the limiting of the pull rod body 7 is cancelled, the pull rope 8 is continuously pulled, the movable shaft is disengaged from the pull rod body 7 through the first opening groove 12, the pull rod baffle 24 and the connecting shaft 25 are disengaged from the middle baffle 3 through the third opening groove 27, and under the action of the pull rod body 7, the end of the V-shaped hook 14 is inwardly retracted, so that the fixed arm 1 can be separated from the pipe 3, thereby realizing the release of the clamp.

Claims

1. A single-sided opening and closing hemostat, characterized by, The utility model relates to a clamp, including fixed arm (1) and movable arm (2) of the composition clamp and drive arrangement for driving movable arm (2) relative to fixed arm (1) rotation open and close, drive arrangement includes the intermediate baffle (3) of fixed mounting in fixed arm (1) and is used for pulling movable arm (2) relative to the rotation of intermediate baffle (3) pull rod mechanism, movable arm (2) includes rotation handle (4), rotation handle (4) is rotatably connected with intermediate baffle (3), is provided on rotation handle (4) for and the guide slot (5) of pull rod mechanism cooperation, pull rod mechanism passes through guide slot (5) and drives movable arm (2) to rotate and exert force to movable arm (2), fixed arm (1) is set up through slot in the corresponding position with the rotation area of rotation handle (4);Limiting slot (6) for the limiting drive end of pull rod mechanism on intermediate baffle (3) is set up with guide slot (5) cooperation; The utility model relates to a clamp, including fixed arm (1) and movable arm (2) of the composition clamp and drive arrangement for driving movable arm (2) relative to fixed arm (1) rotation open and close, drive arrangement includes the intermediate baffle (3) of fixed mounting in fixed arm (1) and is used for pulling movable arm (2) relative to the rotation of intermediate baffle (3) pull rod mechanism, movable arm (2) includes rotation handle (4), rotation handle (4) is rotatably connected with intermediate baffle (3), is provided on rotation handle (4) for and the guide slot (5) of pull rod mechanism cooperation, pull rod mechanism passes through guide slot (5) and drives movable arm (2) to rotate and exert force to movable arm (2), fixed arm (1) is set up through slot in the corresponding position with the rotation area of rotation handle (4);Limiting slot (6) for the limiting drive end of pull rod mechanism on intermediate baffle (3) is set up with guide slot (5) cooperation; The end of operation handle (9) is connected with fixed arm (1) through connecting pipe (13), the end of fixed arm (1) is sleeved outside the end of connecting pipe (13), the elastic limiting mechanism includes V-shaped hook (14), the hook end of V-shaped hook (14) is arranged on connecting pipe (13) and fixed arm (1), and connecting pipe (13) and fixed arm (1) are limited, the boss for cooperating with V-shaped hook (14) is arranged on pull rod body (7), and the pulling force is applied to V-shaped hook; The V-shaped hook (14) includes the elastic connecting section (15) of the hook end and the outward inclination of forming the horn structure and the straight rod section (16) parallel with the pulling direction of pull rod mechanism, the end of straight rod section (16) is transitioned using arc structure, and the pulling force is applied to V-shaped hook (14) as a whole through the cooperation of arc structure and the boss on pull rod body (7).

2. The single-opening and closing hemostatic clip according to claim 1, wherein, The first through hole (18) and the second through hole (19) are arranged on connecting pipe (13) and fixed arm (1) respectively, the diameter of second through hole (19) is greater than the diameter of first through hole (18), and first through hole (18) adopts the flared structure that the diameter gradually increases from inside to outside.

3. The single-opening and closing hemostatic clip according to claim 1, wherein, The safety mechanism comprises a limiting pull ring (20) arranged on the intermediate baffle (3), the limiting pull ring (20) is located on the moving path of the pull rod body (7) when the pull rod body (7) is pulled, and a step (21) for limiting the axial position of the pull rod body (7) is arranged on the pull rod body (7) and matched with the limiting pull ring (20); the limiting pull ring (20) is connected with a safety pull rope (22) arranged on the operating handle (9), and a second opening groove (23) for disengaging the limiting pull ring (20) when the limiting pull ring (20) is pulled by the safety pull rope (22) is arranged on the intermediate baffle (3) at the matched position of the limiting pull ring (20).

4. The single-opening hemostatic clip of claim 3, wherein, The pull rod body (7) is located on one side of the plate surface of the intermediate baffle (3), a pull rod baffle (24) for limiting the radial displacement between the pull rod body (7) and the intermediate baffle (3) is arranged on the pull rod body (7) and matched with the pull rod body (7), the pull rod baffle (24) is located on the side of the intermediate baffle (3) away from the pull rod body (7), the pull rod baffle (24) and the pull rod body (7) are connected through a connecting shaft (25) arranged therebetween, a second limiting groove (26) matched with the connecting shaft (25) is arranged on the intermediate baffle (3), and a third opening groove (27) for disengaging the connecting shaft (25) when the release chuck is released is arranged on one side of the second limiting groove (26) in the moving direction of the pull rod body (7).

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