Hemostatic clip applier

Abstract

The invention belongs to the field of special instruments for laparoscopic surgery, and particularly relates to a hemostatic clip applier, which mainly comprises a handle, a forceps rod, a first sleeve, a second sleeve, a first connecting rod, a second connecting rod, a second connecting rod and a third connecting rod, and is characterized in that the first sleeve is provided with a first end and a second end; the first push rod is arranged in the first sleeve and linearly moves in the direction of the first end or the second end in the length extension direction of the first sleeve; the forceps head comprises a connecting part, the connecting part is provided with a near end and a far end, the far end of the connecting part is connected with the second end, and the connecting part is provided with a pushing cavity channel; the storage bin is formed in the connecting part and located on one side of the pushing cavity channel, and the storage bin communicates with the pushing cavity channel; the second push rod is arranged in the push cavity channel in a sliding manner and is connected with the first push rod; the pushing structure is arranged in the storage bin and used for sequentially pushing the hemostatic clips in the storage bin to the position between the second push rod and the near end; under the linkage of the first push rod and the second push rod, the hemostatic clip in the push cavity is pushed towards the near end.

Description

Technical Field

[0001] This invention belongs to the field of laparoscopic surgical instruments, specifically relating to a hemostatic clip applicator. Background Technology

[0002] During laparoscopic surgery, blood vessels need to be clamped to prevent bleeding when organs and tissues are severed. Currently, the main method used is to apply hemostatic clips (hemlock clips, made of plastic) to the bleeding site or target blood vessel to control bleeding and prevent fluid leakage by physically sealing the tissue or blood vessel.

[0003] In existing technologies, most commonly used clip applicators are single-type clip applicators. A single-type clip applicator means that only one hemostatic clip (hemlock clip) can be inserted into the jaws of the clip applicator at a time. When clipping, first insert one hemostatic clip into the head of the clip applicator, and then insert the head of the clip applicator into the surgical area through the surgical channel. By turning the handle of the clip applicator, the target tissue or target blood vessel is clipped. If a second hemostatic clip is to be clipped, the clip applicator needs to be withdrawn from the patient's body, and a new hemostatic clip needs to be inserted into the head of the clip applicator. Similarly, if multiple hemostatic clips need to be clipped, the above actions need to be repeated many times. Therefore, it leads to a prolongation of operation time, an increase in patient bleeding, and a disruption of the aseptic conditions of the clip applicator.

[0004] To address the above-mentioned problems, this invention provides a hemostatic clip applicator. Summary of the Invention

[0005] To overcome the problems mentioned in the background art, the present invention provides a hemostatic clip applicator that can be loaded with multiple hemostatic clips. During use, each clip is sequentially applied towards the target area to facilitate the surgeon's application of the clips to the target tissue or blood vessel. This method shortens surgical time, reduces patient bleeding, and avoids repeated insertion and removal from the patient's body. The specific technical solution adopted is as follows: It includes: a handle; a clamp bar, the clamp bar comprising: a first sleeve having a first end and a second end opposite to each other, wherein the first end of the first sleeve is connected to the handle; a first push rod disposed within the first sleeve and capable of linearly moving along the length extension direction of the first sleeve towards the first end and the second end; a clamp head, the clamp head comprising: a connecting portion having a proximal end and a distal end opposite to each other, the distal end of the connecting portion being connected to the second end, wherein the proximal end of the connecting portion provides a push channel towards the distal end; and a clamp containing multiple hemostatic clips. A storage compartment formed within the connecting portion and located on one side of the push channel, wherein the storage compartment is connected to the push channel; a second push rod slidably disposed within the push channel and connected to the first push rod; a push structure disposed within the storage compartment for sequentially pushing the hemostatic clips within the storage compartment between the second push rod and the proximal end; wherein, when the first push rod moves linearly toward the second end, the second push rod, driven by the first push rod, moves toward the proximal end to push the hemostatic clips within the push channel toward the proximal end.

[0006] In some embodiments of this application, the distal end of the connecting portion is detachably connected to the second end of the first sleeve, and the second push rod is detachably connected to the first push rod.

[0007] In some embodiments of this application, an elastic constraint is disposed within the push cavity, wherein the elastic constraint is closer to the proximal end within the push cavity, such that the hemostatic clip pushed into the push cavity is constrained between the elastic constraint and the second push rod, and when the second push rod moves toward the proximal end, the hemostatic clip can break through the constraint and enter the clamping portion.

[0008] Furthermore, the elastic constraint includes a first elastic constraint and a second elastic constraint, wherein the first elastic constraint and the second elastic constraint are mirror-symmetrical within the push cavity.

[0009] In some embodiments of this application, the storage compartment forms an opening in the inner wall of the push cavity, and the storage compartment is connected to the push cavity through the opening. The second push rod at least partially blocks the opening so that, under the action of the push structure, only one hemostatic clip can be pushed between the second push rod and the proximal end at a time.

[0010] Furthermore, the storage compartment includes a first longitudinal wall and a second longitudinal wall, with the hemostatic clip located between the first longitudinal wall and the second longitudinal wall. The opening penetrates the first longitudinal wall, wherein at least a portion of the second longitudinal wall bends toward the opening to form an arc-shaped wall. Under the push of the pushing structure, the hemostatic clip enters the pushing cavity along the arc-shaped wall.

[0011] In some embodiments of this application, the pushing structure includes: a pushing plate slidably disposed between the first longitudinal wall and the second longitudinal wall; a spring, one end of which abuts against the pushing plate and the other end of which abuts against the inner surface of the storage chamber, wherein the spring pushes the pushing plate toward the proximal end, so that the hemostatic clip in the storage chamber is pushed toward the proximal end until the hemostatic clip is delivered into the pushing cavity along the arc-shaped wall.

[0012] Furthermore, the clamp head also includes a clamping part, which is disposed at the proximal end of the connecting part. The clamping part has an open state and a clamping state. In the open state, when the second push rod moves toward the proximal end, the hemostatic clamp in the push cavity is pushed into the clamping part. In the clamping state, the clamping part applies force to the hemostatic clamp, causing the hemostatic clamp to close.

[0013] Furthermore, it also includes: a second sleeve, sleeved on the outside of the first sleeve, and capable of linearly moving towards the first end and the second end along the length extension direction of the first sleeve; the clamping part includes: a first clamp arm and a second clamp arm, both of which are rotatably connected to the connecting part; a first elastic member and a second elastic member, the first elastic member connecting the first clamp arm to the outer wall of the first sleeve, and the second elastic member connecting the second clamp arm to the outer wall of the first sleeve, wherein, under the elastic potential energy of the first elastic member and the second elastic member, the first clamp arm and the second clamp arm are always in the open state; wherein, when the second sleeve moves towards the second end, the second sleeve, the first elastic member, and the second elastic member deform, and the shape of the first elastic member and the second elastic member is restored, so that the first clamp arm and the second clamp arm are converted to the open state.

[0014] Furthermore, the first clamp arm and the second clamp arm are mirror-symmetrical.

[0015] The beneficial effects of this invention are: 1. By configuring the forceps head and forceps bar, during use, the forceps head, loaded with multiple hemostatic clips, is inserted into the surgical area via the forceps bar. A pushing mechanism then sequentially pushes each hemostatic clip into the proximal end between the second push rod and the forceps head connection. The first push rod is then driven to move linearly towards the second end, and the second push rod, driven by the first push rod, moves proximally, thus pushing a hemostatic clip from the pushing channel towards the proximal end until it exits the pushing channel. Then, the first push rod is driven to move linearly towards the first end, and the second push rod moves away from the proximal end, allowing another hemostatic clip in the storage compartment to be pushed into the second push rod by the pushing mechanism. Between the proximal end of the rod and the forceps head connection, the next hemostatic clip is pushed, and this process is repeated until all hemostatic clips are used. With this configuration, multiple hemostatic clips can be loaded into the patient's body at one time, avoiding the need for surgical instruments to repeatedly enter and exit the patient's body during the operation. Furthermore, through the cooperation between the pushing structure and the first and second push rods, the loading of hemostatic clips can be completed inside the patient's body, thereby shortening the hemostatic clip loading time, which in turn shortens the operation time. Thus, when the patient experiences bleeding, the bleeding point / tissue can be physically sealed in a timely manner, thereby reducing the amount of bleeding. 2. By setting up an application part, a second sleeve, a first push rod, and a second push rod, in use, when the hemostatic clip is pushed out of the push cavity by the linkage of the first push rod and the second push rod, the hemostatic clip is loaded into the application part, that is, between the first clamp arm and the second clamp arm. At this time, the second sleeve is driven to move linearly towards the second end along the length extension direction of the first sleeve, so that the first clamp arm and the second clamp arm rotate relative to the connecting part, thereby changing from an open state to a clamping state, and thus closing the hemostatic clip. Then, the second sleeve is moved towards the first end, so that the first clamp arm and the second clamp arm change to an open state. At this time, through the linkage of the first push rod and the second push rod again, another hemostatic clip is loaded between the first clamp arm and the second clamp arm, and applied to the target tissue or blood vessel. In this setting, multiple hemostatic clips can be applied sequentially to the surgical area tissue or target blood vessel, thereby achieving rapid control of bleeding or closure of blood vessels. 3. By setting up elastic constraint members and a second push rod, after the pushing structure sends the hemostatic clip into the pushing cavity, the first elastic constraint member, the second elastic constraint member, and the second push rod constrain the hemostatic clip, preventing it from moving within the pushing cavity. This prevents the hemostatic clip from coming out of the pushing cavity when applying a hemostatic clip at the application part. At the same time, it also prevents the remaining hemostatic clips in the storage compartment from being pushed into the pushing cavity by the pushing structure, thereby enabling the sequential use of each hemostatic clip. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure after the pliers head and pliers bar are connected; Figure 3 This is a schematic diagram of the internal structure of the pliers head of the present invention; Figure 4 This is a cross-sectional view of the pliers head of the present invention; Figure 5 This is a schematic diagram of the structure of the pliers head and pliers bar after separation. Figure 6 This is a schematic diagram of the push structure of the present invention; Figure 7 This is a schematic diagram of the clamping part of the present invention in the open state; Figure 8 This is a schematic diagram of the clamping structure of the clamping part of the present invention. Figure 9 This is a schematic diagram of the internal structure of the handle of the present invention; Figure 10 This is a schematic diagram of the first trigger and the second trigger structure of the present invention; Figure 11 This is a schematic diagram of the connection structure between the second trigger and the second sleeve of the present invention; Figure 12 This is a schematic diagram of the connection structure between the first trigger and the first push rod of the present invention; In the diagram, 1 is the handle; 11 is the main body; 12 is the first trigger; 121 is the finger; 122 is the sector tooth; 13 is the second trigger; 131 is the abutment part; 2 is the clamp bar; 21 is the first sleeve; 211 is the connecting groove; 22 is the first push rod; 221 is the first magnetic component; 23 is the second sleeve; 23 is the abutment end; 3 is the clamp head; 31 is the connecting part; 311 is the pushing cavity; 3111 is the first elastic constraint component; 3112 is the second elastic constraint component; 312 is the connecting support arm; 32 is the storage compartment; 33 is the second push rod; 331 is the second magnetic component; 34 is the pushing structure; 341 is the pushing plate; 342 is the spring; 35 is the clamping part; 351 is the first clamp arm; 352 is the second clamp arm; 353 is the first elastic component; 354 ​​is the second elastic component. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention are clearly and completely described below through specific examples. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Figure 1 Section 3 illustrates the main technical content of this embodiment. This specific embodiment provides a hemostatic clip applicator, which includes: a handle 1, a clamp bar 2, the clamp bar 2 including: a first sleeve 21, the first sleeve 21 having a first end and a second end opposite to each other, wherein the first end of the first sleeve 21 is connected to the handle 1; a first push rod 22, disposed within the first sleeve 21, and capable of linearly moving along the first end and the second end in the length extension direction of the first sleeve 21; and a clamp head 3, the clamp head 3 including: a connecting portion 31, the connecting portion 31 having a proximal end and a distal end opposite to each other, the distal end of the connecting portion 31 being connected to the second end, wherein the proximal end of the connecting portion 31 has a push rod extending from the distal end. The device includes a delivery channel 311; a storage chamber 32 for storing multiple hemostatic clips, the storage chamber 32 being formed within the connecting portion 31 and located on one side of the delivery channel 311, wherein the storage chamber 32 is connected to the delivery channel 311; a second push rod 33 slidably disposed within the delivery channel 311 and connected to the first push rod 22; and a push structure 34 disposed within the storage chamber 32 for sequentially pushing the hemostatic clips in the storage chamber 32 between the second push rod 33 and the proximal end; wherein, when the first push rod 22 moves linearly towards the second end, the second push rod 33, driven by the first push rod 22, moves towards the proximal end to push the hemostatic clips in the delivery channel 311 towards the proximal end.

[0019] In use, the surgeon holds the handle 1 and uses the clamp bar 2 to insert the clamp head 3, which contains multiple hemostatic clips, into the surgical area. At this time, the pushing structure 34 pushes a hemostatic clip from the storage chamber 32 into the pushing channel 311, positioning it between the second push rod 33 and the proximal end of the clamp head 3 connection 31. Then, by driving the first push rod 22 to move linearly towards the second end, the second push rod 33 moves proximally under the drive of the first push rod 22, thus pushing a hemostatic clip from the pushing channel 311 towards the proximal end until it is delivered outside the pushing channel 311. Then, by driving the first push rod 22 to move linearly towards the first end, the second push rod 33 moves away from the proximal end, and another hemostatic clip in the storage chamber 32 is pushed into the proximal end between the second push rod 33 and the clamp head 3 connection 31 by the pushing structure 34, thus pushing the next hemostatic clip, and so on until all hemostatic clips are used.

[0020] In this embodiment, the distal end of the connecting part 31 is detachably connected to the second end of the first sleeve 21, and the second push rod 33 is detachably connected to the first push rod 22, such as... Figure 3As shown in Figure 5, the distal end of the connecting portion 31 is provided with two connecting arms 312. The two connecting arms 312 extend away from the proximal end and are mirror-symmetrical to each other. Each connecting arm 312 has an elastic protrusion on its opposite side. The outer wall of the first sleeve 21 has two connecting grooves 211, extending from the second end towards the first end. Each connecting groove 211 has a recess that matches the elastic protrusion. In use, the two connecting arms 312 of the connecting portion 31 are inserted into the two connecting grooves 211 until the distal end of the connecting portion 31 is in contact with the second end of the first sleeve 21. When the elastic protrusion engages with the connecting groove 211, a connection is formed between the connecting part 31 and the first sleeve 21. With this configuration, the forceps head 3 can be disassembled from the first sleeve 21, so that the forceps head 3 can be discarded after the operation, thereby avoiding the entire forceps being discarded and saving medical costs. In addition, when the hemostatic clips in the storage compartment 32 are used up, the forceps head 3 can be replaced to apply hemostatic clips to the surgical area tissue again, thereby improving surgical efficiency. In the specific disassembly process, the medical staff applies force to the forceps head 3 in the opposite direction of insertion. Under the action of external force, the elastic protrusion disengages from the recess, thereby separating the forceps head 3 from the first sleeve 21.

[0021] Alternatively (not shown), the connecting part 31 and the first sleeve 21 can also be threaded together. Specifically, an external thread is provided on the outer wall of the connecting part 31 and an internal thread is provided on the inner surface of the first sleeve 21. In use, by rotating the connecting part 31, the connecting part 31 is partially screwed into the first sleeve 21, thereby forming a connection between the connecting part 31 and the first sleeve 21.

[0022] refer to Figure 4 —6. The first push rod 22 and the second push rod 33 can be connected by magnetic adsorption. Specifically, a first magnetic element 221 is provided at one end of the first push rod 22, and a second magnetic element 331 is provided at one end of the second push rod 33. After the connecting part 31 is connected to the first sleeve 21, the first magnetic element 221 and the second magnetic element 331 attract each other, thereby forming a connection between the first push rod 22 and the second push rod 33. When the first push rod 22 moves towards the second end, it correspondingly pushes the second push rod 33 to move towards the proximal end in the pushing cavity 311, thereby realizing the delivery of the hemostatic clip in the pushing cavity 311.

[0023] refer to Figure 3In this embodiment, the push channel 311 is equipped with an elastic constraint member, which is located closer to the proximal end within the push channel 311. This restricts the hemostatic clip pushed into the push channel 311 between the elastic constraint member and the second push rod 33. When the second push rod 33 moves towards the proximal end, the hemostatic clip can break through the constraint member and enter the clamping part. In this configuration, when the hemostatic clip is located within the push channel 311, the elastic constraint member and the second push rod 33 constrain the hemostatic clip, preventing unused hemostatic clips located within the push channel 311 from falling out, thereby preventing surgical instruments from being left inside the patient's body. Furthermore, when the hemostatic clip is pushed out of the push channel 311, the hemostatic clip abuts against the elastic constraint member. As the second push rod 33 pushes continuously, the elastic constraint member deforms, causing it to lose its constraint on the hemostatic clip. Thus, the hemostatic clip is pushed out of the push channel 311.

[0024] More specifically, such as Figure 3 As shown, the elastic element includes a first elastic constraint 3111 and a second elastic constraint 3112, wherein the first elastic constraint 3111 and the second elastic constraint 3112 are mirror-symmetrical within the push cavity 311. Furthermore, the first elastic constraint 3111 and the second elastic constraint 3112 have the same structure, that is, both include an inclined plate, wherein there is an angle between the inclined plate and the inner surface of the push cavity 311. During the process of pushing the hemostatic clip, it abuts against one side of the inclined plate. At this time, the inclined plate moves closer to the inner surface of the push cavity 311 until it loses its constraint force on the hemostatic clip. At this time, the hemostatic clip can be pushed out of the push cavity beyond the inclined plate. After the hemostatic clip is pushed out, the inclined plate returns to its original position due to its own elasticity, thereby constraining the next hemostatic clip.

[0025] Preferably, the inclined plate can be made of any one of stainless steel, rigid plastic, rubber, or silicone.

[0026] refer to Figure 4 —6. In this embodiment, the storage chamber 32 forms an opening in the inner wall of the push channel 311. The storage chamber 32 is connected to the push channel 311 through the opening. The second push rod 33 at least partially blocks the opening, so that under the action of the push structure 34, only one hemostatic clip can be pushed between the second push rod 33 and the proximal end at a time. (Refer to...) Figure 6As can be seen, the opening is located in the push cavity 311 near the proximal end of the connecting part 31. The end of the second push rod 33 near the proximal end partially blocks the opening. A space is reserved between the second push rod 33 and the proximal end to accommodate the hemostatic clip. When a hemostatic clip enters this space, because part of the opening is partially blocked by the second push rod 33, subsequent hemostatic clips cannot enter between the second push rod 33 and the proximal end. This allows one hemostatic clip to be pushed out of the forceps head 3 each time. In addition, when the second push rod 33 pushes the hemostatic clip towards the proximal end, the opening is completely blocked; conversely, when the second push rod 33 moves towards the distal end, the opening is gradually exposed. With the push of the push structure 34, another hemostatic clip is sent into the space between the second push rod 33 and the proximal end. This process is repeated until all the hemostatic clips in the storage compartment 32 are used.

[0027] refer to Figure 4 —6. Specifically, the storage compartment 32 includes a first longitudinal wall and a second longitudinal wall. The hemostatic clip is located between the first longitudinal wall and the second longitudinal wall. An opening penetrates the first longitudinal wall. At least a portion of the second longitudinal wall is bent towards the opening to form an arc-shaped wall. Under the push of the push structure 34, the hemostatic clip enters the push channel 311 along the arc-shaped wall. In use, the hemostatic clip moves linearly between the first longitudinal wall and the second longitudinal wall under the action of the push structure 34. When it reaches the arc-shaped wall, the direction of movement of the hemostatic clip changes under the action of the arc-shaped wall. At the same time, due to the existence of the opening, the direction of movement of the hemostatic clip can be changed. Under the blocking action of the second push rod 33, the hemostatic clip enters the push channel 311 through the opening.

[0028] refer to Figure 4 —6. In this embodiment, the pushing structure 34 includes: a pushing plate 341 and a spring 342. The pushing plate 341 is slidably disposed between the first longitudinal wall and the second longitudinal wall. One end of the spring 342 abuts against the pushing plate 341, and the other end of the spring 342 abuts against the inner surface of the storage chamber 32. The spring 342 pushes the pushing plate 341 towards the proximal end, so that the hemostatic clip in the storage chamber 32 is pushed towards the proximal end until the hemostatic clip is sent into the pushing cavity 311 along the arc-shaped wall. For explanation, the hemostatic clips are loaded sequentially in the storage chamber 32 in a compressed state. When the storage chamber 32 is full of hemostatic clips, the spring 342 is in a compressed state, and the second push rod 33 blocks the hemostatic clip from entering the pushing cavity 311 until the second push rod 33 and the first push rod 22 form a connection relationship.

[0029] As will be understood by those skilled in the art, the width and length of the push cavity 311 and the area of ​​the storage chamber 32 can be adaptively adjusted according to the size of the hemostatic clamp. Specifically, the clamp head 3 is provided with different specifications. For each specification of clamp head 3, the size of the push cavity 311 and the area of ​​the storage chamber 32 inside are different, and the size of the second push rod 33 is adapted accordingly.

[0030] like Figure 5 and Figure 7 The clamp head 3 also includes a clamping part 35, which is disposed at the proximal end of the connecting part 31. The clamping part 35 has an open state and a clamping state. In the open state, when the second push rod 33 moves towards the proximal end, the hemostatic clip in the push cavity 311 is pushed into the clamping part 35. In the clamping state, the clamping part 35 applies force to the hemostatic clip, causing the hemostatic clip to close. In use, by driving the clamping part to switch between the open state and the clamping state, the hemostatic clips are sequentially clamped onto the surgical area tissue and the target blood vessel.

[0031] Regarding how to achieve the transition between the opening and clamping states of the applying part, the following implementation method is provided in this embodiment, see reference. Figure 5 —7, the clamp 2 also includes: a second sleeve 23, which is sleeved on the outside of the first sleeve 21 and can move linearly to the first end and the second end in the length extension direction of the first sleeve 21.

[0032] The clamping part 35 includes: a first clamping arm 351, a second clamping arm 352, a first elastic element 353, and a second elastic element 354. Both the first clamping arm 351 and the second clamping arm 352 are rotatably connected to the connecting part 31. The first elastic element 353 connects the first clamping arm 351 to the outer wall of the first sleeve 21, and the second elastic element 354 connects the second clamping arm 352 to the outer wall of the first sleeve 21. Under the elastic potential energy of 4, the first clamp arm 351 and the second clamp arm 352 are always in an open state; wherein, when the second sleeve 23 moves towards the second end, the second sleeve 23 forms an abutment relationship with the first elastic element 353 and the second elastic element 354, causing the first elastic element 353 and the second elastic element 354 to deform, thereby causing the first clamp arm 351 and the second clamp arm 352 to rotate relative to the connecting part 31, thus changing from an open state to a clamping state. After the second sleeve 23 moves away from the second end, the first clamp arm 351 and the second clamp arm 352 are always in an open state. The elastic elements 353 and 354 return to their original shapes, allowing the first clamp arm 351 and the second clamp arm 352 to open. In use, a hemostatic clamp is inserted between the first clamp arm 351 and the second clamp arm 352 via the linkage of the first push rod 22 and the second push rod 33. Then, by driving the second sleeve 23 to move to the second end, the second sleeve 23 applies force to the first elastic element 353 and the second elastic element 354, causing the first elastic element 353 and the second elastic element 354 to open. 4. Deformation occurs, causing the first clamp arm 351 and the second clamp arm 352 to rotate relative to the connecting part 31, thereby bringing the first clamp arm 351 and the second clamp arm 352 closer together, so that the hemostatic clamp located between them closes and clamps at the target position. Conversely, when the second sleeve 23 moves away from the second end, the first elastic element 353 and the second elastic element 354 come into contact with force, and their shape is restored accordingly, thereby causing the first clamp arm 351 and the second clamp arm 352 to move away from each other, thus forming an open state.

[0033] For explanation, the first clamp arm 351 and the second clamp arm 352 are hinged or pivotally connected to the connecting part 31.

[0034] Preferably, the first clamp arm 351 and the second clamp arm 352 are mirror-symmetrical, wherein both the first clamp arm 351 and the second clamp arm 352 have guide grooves. After the hemostatic clip is pushed out of the push cavity 311, the two clamping arms of the hemostatic clip enter the two guide grooves respectively, so as to prevent the hemostatic clip from coming out between the first clamp arm 351 and the second clamp arm 352 during use.

[0035] To achieve the goal of driving the second sleeve 23 to move along the length of the first sleeve 21 via the handle 1 and driving the first push rod 22 to move along the length extension direction of the first sleeve 21, in this embodiment, as follows: Figure 9—10, the following method is adopted: the handle 1 includes: a main body 11, a first trigger 12, and a second trigger 13. The main body 11 has a connection port and a receiving cavity, wherein the first end of the first sleeve 21 is fixedly connected to the connection port, and one end of the second sleeve 23 extends into the receiving cavity; the first trigger 12 is rotatably connected to the main body 11, and the first trigger 12 is connected to the first push rod 22. When the first trigger 12 rotates, it drives the first push rod 22 to move linearly within the first sleeve 21. The second trigger 13 is rotatably connected to the main body 11, and the second trigger 13 is connected to the second sleeve 23. When the second trigger 13 rotates, it drives the second sleeve 23 to move linearly in the length extension direction of the first sleeve 21. In use, the operator holds the main body 11 and then pulls the first trigger 12, causing the first push rod 22 to move linearly within the first sleeve 21. The cannula 21 moves linearly, which in turn drives the second push rod 33 to move synchronously, so as to load the hemostatic clip in the push channel 311 between the first clamp arm 351 and the second clamp arm 352. Then, the first trigger 12 is reset, so that the second push rod 33 moves away from the proximal end, thereby allowing the hemostatic clip in the storage compartment 32 to enter the push channel 311. At this time, the operator pulls the second trigger 13, which drives the second cannula 23 to move closer to the first clamp arm 351 and the second clamp arm 352 in the length extension direction of the first cannula 21, and then press against the first elastic member 353 and the second elastic member 354, so that the first clamp arm 351 and the second clamp arm 352 change from the open state to the clamping state, thereby realizing the clamping of the target tissue or blood vessel. This operation is repeated to realize the sequential clamping of each hemostatic clip at the target position.

[0036] For illustrative purposes, the first trigger 12 passes through the second sleeve 23 and is connected to the first push rod 22. Specifically, the second sleeve 23 has a slot, in which the first end of the first push rod 22 is located, and the first trigger 12 is connected to the first push rod 22 after passing through the slot.

[0037] Specifically, refer to Figure 9 —12, the first trigger 12 includes: a finger 121 and a sector tooth 122. The sector tooth 122 is disposed at one end of the finger 121 near the first push rod 22. A part of the first push rod 22 is configured as a rack, wherein the rack and the sector tooth 122 mesh with each other. When force is applied to the finger 121 to make the finger 121 rotate counterclockwise, the meshing of the sector tooth 122 and the rack causes the first push rod 22 to move as a whole toward the caliper head 3, thereby enabling the first push rod 22 to drive the second push rod 33 to move synchronously.

[0038] refer to Figure 10 —11, specifically, one end of the second sleeve 23 that extends into the receiving chamber is configured as an abutment end 23, wherein the second trigger 13 has an abutment portion 131, which fits against the abutment end 23, for reference. Figure 11 When the second trigger 13 is turned counterclockwise, the abutment part 131 applies force to the abutment end 23 of the second sleeve 23, thereby pushing the second sleeve 23 to move along the length of the first sleeve 21.

[0039] More preferably, there is a certain distance between the end of the first push rod 22 located inside the second sleeve 23 and the abutting end 23. In this configuration, when the second sleeve 23 moves in a straight line, it does not cause the first push rod 22 to move.

[0040] In addition, the second push rod 33 will not rotate relative to the first sleeve 21. Specifically, the outer wall of the first sleeve 21 is provided with a limiting shaft, and the second sleeve 23 is provided with a limiting groove through it. The limiting shaft is inserted into the limiting groove, so that the second sleeve 23 will not rotate axially relative to the first sleeve 21.

[0041] refer to Figure 10 Preferably, a spring is also provided inside the connection port, and an abutment edge is provided on the outer wall of the second sleeve 23. The spring is arranged around the outer wall of the second sleeve 23, wherein one end of the spring abuts against the inner side of the connection port, and the other end of the spring abuts against the abutment edge, so that the second sleeve 23 is always away from the second end of the first sleeve 21. When the surgeon pulls the second trigger 13, the second sleeve moves towards the second end of the first sleeve. At this time, the spring is compressed. When the force applied to the second trigger 13 is stopped, the spring opens to push the second sleeve 23 away from the second end of the first sleeve 21, so that the surgeon can drive the second sleeve 23 to make the first clamp arm 351 and the second clamp arm 352 complete the clamping action.

[0042] The above description of the embodiments is only for understanding the present invention. It should be noted that those skilled in the art can make several modifications to the present invention without departing from the principles of the invention, and these modifications will also fall within the protection scope of the claims of the present invention.

Claims

1. A hemostatic clip applicator, comprising, The handle is characterized in that it further includes: a clamp bar, the clamp bar including: a first sleeve having a first end and a second end opposite to each other, wherein the first end of the first sleeve is connected to the handle; The first push rod is disposed inside the first sleeve and is capable of moving linearly along the length extension direction of the first sleeve towards the first end and the second end. A pliers head, comprising: a connecting portion having a proximal end and a distal end opposite to each other, the distal end of the connecting portion being connected to a second end, wherein the proximal end of the connecting portion provides a pushing channel toward the distal end; and A storage compartment containing multiple hemostatic clips, the storage compartment being formed within the connecting portion and located on one side of the push channel, wherein the storage compartment is connected to the push channel; and The second push rod is slidably disposed within the push cavity and is connected to the first push rod; A pushing structure, configured within the storage chamber, is used to sequentially push the hemostatic clips within the storage chamber between the second push rod and the proximal end; wherein, when the first push rod moves linearly towards the second end, the second push rod, driven by the first push rod, moves towards the proximal end to push the hemostatic clips within the pushing cavity towards the proximal end.

2. The hemostatic clip applicator according to claim 1, characterized in that, The distal end of the connecting part is detachably connected to the second end of the first sleeve, and the second push rod is detachably connected to the first push rod.

3. The hemostatic clip applicator according to claim 1, characterized in that, An elastic constraint is disposed within the push cavity, wherein the elastic constraint is closer to the proximal end within the push cavity, such that the hemostatic clip pushed into the push cavity is constrained between the elastic constraint and the second push rod. When the second push rod moves toward the proximal end, the hemostatic clip can break through the constraint and enter the clamping part.

4. The hemostatic clip applicator according to claim 2, characterized in that, The elastic constraint includes a first elastic constraint and a second elastic constraint, wherein the first elastic constraint and the second elastic constraint are mirror-symmetrical within the push cavity.

5. The hemostatic clip applicator according to claim 1, characterized in that, The storage compartment forms an opening in the inner wall of the push cavity, and the storage compartment is connected to the push cavity through the opening. The second push rod at least partially blocks the opening so that, under the action of the push structure, only one hemostatic clip can be pushed between the second push rod and the proximal end at a time.

6. The hemostatic clip applicator according to claim 5, characterized in that, The storage compartment includes a first longitudinal wall and a second longitudinal wall, with a hemostatic clip located between the first and second longitudinal walls. The opening penetrates the first longitudinal wall, wherein at least a portion of the second longitudinal wall bends toward the opening to form an arc-shaped wall. Under the push of the pushing structure, the hemostatic clip enters the pushing cavity along the arc-shaped wall.

7. The hemostatic clip applicator according to claim 6, characterized in that, The push structure includes: A push plate, which is slidably disposed between the first longitudinal wall and the second longitudinal wall; A spring, one end of which abuts against the push plate and the other end of which abuts against the inner surface of the storage chamber, wherein the spring pushes the push plate toward the proximal end, so that the hemostatic clip in the storage chamber is pushed toward the proximal end until the hemostatic clip is sent into the push cavity along the arc-shaped wall.

8. The hemostatic clip applicator according to claim 1, characterized in that, The clamp head further includes a clamping part, which is disposed at the proximal end of the connecting part. The clamping part has an open state and a clamping state. In the open state, when the second push rod moves toward the proximal end, the hemostatic clamp in the push cavity is pushed into the clamping part. In the clamping state, the clamping part applies force to the hemostatic clamp, causing the hemostatic clamp to close.

9. The hemostatic clip applicator according to claim 8, characterized in that, Also includes: The second sleeve is fitted onto the outside of the first sleeve and can move linearly toward the first end and the second end along the length extension direction of the first sleeve. The clamping part includes: The first clamp arm and the second clamp arm are rotatably connected to the connecting part; A first elastic element and a second elastic element, wherein the first elastic element connects the first clamp arm to the outer wall of the first sleeve, and the second elastic element connects the second clamp arm to the outer wall of the first sleeve, wherein, under the elastic potential energy of the first elastic element and the second elastic element, the first clamp arm and the second clamp arm are always in the open state. When the second sleeve moves toward the second end, the second sleeve forms an abutment relationship with the first elastic element and the second elastic element, causing the first elastic element and the second elastic element to deform, thereby causing the first clamp arm and the second clamp arm to rotate relative to the connecting part, thus changing from the open state to the clamping state. After the second sleeve moves away from the second end, the shape of the first elastic element and the second elastic element is restored, so that the first clamp arm and the second clamp arm return to the open state.

10. The hemostatic clip applicator according to claim 9, characterized in that, The first clamp arm and the second clamp arm are mirror-symmetrical.

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