Clip applier
By designing the cooperation between the clamp head assembly and the body assembly, and using the trigger and ratchet components to control the opening and closing of the ligation clamp, the problem of the inability of existing clamping clamps to operate continuously is solved, realizing a simple, low-cost, safe and reliable push-clamp and clamp-closing operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- B J ZH F PANTHER MEDICAL EQUIP
- Filing Date
- 2024-12-30
- Publication Date
- 2026-05-05
AI Technical Summary
Existing clamping pliers cannot achieve a continuous push-clamp and close-clamp operation, have a complex structure and high cost, and are prone to tooth breakage and contamination problems.
A clamping clamp comprising a clamp head assembly and a clamp body assembly is designed. By utilizing the cooperation of a trigger assembly, a sliding assembly, and a ratchet component, the opening and closing of the ligation clamp is controlled by the tooth movement of the elastic component, thereby achieving a continuous operation of pushing and closing the clamp.
It enables seamless operation of pushing and closing the clamp, has a simple structure, low cost, and ensures operational safety through sound prompts, thereby improving the quality of surgery.
Smart Images
Figure CN224193532U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to a clamping forceps. Background Technology
[0002] Currently, ligation clips on the market are typically handled using tools like clamps or pliers, which is quite inconvenient. Furthermore, the process of handling them can easily disrupt the stack of clips, making them more cluttered and difficult to use, and also causing them to spill and become contaminated.
[0003] Another type of continuous ligation clamp and clamping pliers has a wrench that is limited by the material and structure of the material. In addition, the force required to push and close the clamp is relatively large, which can easily cause the teeth to break during the elastic deformation process.
[0004] Existing clamp products on the market have complex structures and high assembly requirements, resulting in very high production and usage costs. They also cannot achieve the technical problem of continuous push-clamp and clamp-closing operations.
[0005] Therefore, it is urgent to develop a clamping pliers with a simple structure and easy operation that can perform push-clamp and close-clamp operations in a continuous manner. This patent introduces a clamping pliers that can achieve push-clamp and close-clamp operations in a continuous manner. Utility Model Content
[0006] The technical problem this utility model aims to solve is to address the inability of existing technologies to achieve continuous pushing and closing clamping operations. To solve the above technical problem, this utility model provides the following technical solution:
[0007] A clamping clamp includes a clamp head assembly and a clamp body assembly, wherein the proximal end of the clamp head assembly is connected to the distal end of the clamp body assembly, the clamp head assembly includes a clamp head and an outer tube, the outer tube being sleeved on the ligation clamp, characterized in that the clamp body assembly includes a trigger assembly, a sliding assembly and a ratchet component, the trigger assembly including a trigger body and an elastic component;
[0008] Pulling the trigger body towards the proximal end drives the elastic component to skip teeth in the ratchet component, causing the sliding component to slide towards the distal end, thereby controlling the closure of the ligation clip;
[0009] Pushing the trigger body towards the distal end drives the elastic component to jump within the ratchet component, causing the sliding part to slide towards the proximal end, thereby controlling the opening of the ligation clip.
[0010] Furthermore, the trigger body includes a trigger and a trigger cover plate, the trigger cover plate being fastened to the trigger;
[0011] The elastic component is an elastic sheet, and the trigger is provided with a first slot and a second slot. A portion of the elastic sheet is located in the first slot and the second slot inside the trigger.
[0012] The elastic sheet includes a third slot and a fourth slot. The trigger is provided with a first fixing point for fixing the fourth slot, and the trigger cover is provided with a second fixing point for fixing the third slot.
[0013] Furthermore, the trigger cover being fastened to the trigger means that the trigger is provided with a first latch and a second latch, and the trigger cover is provided with a first latch hole and a second latch hole respectively, the first latch being fastened into the first latch hole, and the second latch being fastened into the second latch hole.
[0014] Furthermore, the elastic sheet is bent twice to form a first bending angle and a second bending angle; the elastic sheet also includes a first reset groove and a second reset groove; the end portion of the first bending angle is engaged in the first groove, and the area between the first bending angle and the second bending angle is engaged in the second groove.
[0015] Furthermore, the ratchet component includes ratchet teeth, a ratchet sliding portion, and a ratchet back; the upper end face of the ratchet component is evenly distributed with the ratchet teeth, and the ratchet back has a smooth structure.
[0016] Furthermore, the elastic sheet also includes a first reset groove and a second reset groove; the second bending angle rests on the ratchet component for meshing movement; when a reset operation is performed, the first reset groove and the second reset groove are used to contact the back of the ratchet for guiding movement.
[0017] Furthermore, the sliding part includes a push-pull rod and a return spring, with the return spring sleeved on the push-pull rod.
[0018] Furthermore, when performing the clamping operation, pressing the trigger moves the push-pull rod towards the distal end, compressing the return spring and causing the elastic plate to rotate onto the first ratchet tooth of the ratchet component. At this point, the ligation clamp is fully pushed to the first position of the jaws. Continuing to press the trigger, the elastic plate slides past the ratchet teeth of the ratchet component. When the elastic plate is engaged with the last tooth of the ratchet component, the ligation clamp reaches the second position of the jaws, completing the clamping operation.
[0019] Furthermore, when performing the clamping operation, if the trigger is pressed continuously, the return spring continues to be compressed and subjected to force, the elastic plate completely disengages from the ratchet of the ratchet component, the elastic plate rebounds to the initial state and slides along the buffer area of the ratchet component, and the trigger closes and rotates to the final position, so that the ligation clamp completes the locking operation at the third position of the jaws.
[0020] Furthermore, when performing the reset operation, the trigger is released, and the first and second reset grooves of the elastic plate engage with the back of the ratchet, respectively. The elastic plate slides downward along the back of the ratchet to reset, thereby resetting the push-pull rod towards the proximal end, thus completing the reset of the elastic plate.
[0021] With this design, the present invention has at least the following advantages:
[0022] (1) The operation of this utility model can be stopped and started at any time by closing the trigger, which makes it convenient for doctors to adjust the relative position of the instrument and the tissue at any time and improve the quality of surgery.
[0023] (2) The elastic plate and ratchet component of this utility model will make a "click-click-click" sound during the sliding process of pushing and clamping. When entering the closing operation, the sound disappears. The sound can indicate to the doctor the two operation states of pushing and clamping and closing. It can play a safety warning role during the operation of the instrument.
[0024] (3) This utility model has a simple structure, good effect, low cost and easy process implementation. Attached Figure Description
[0025] The above is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model, the following describes this utility model in further detail with reference to the accompanying drawings and specific embodiments.
[0026] Figure 1 This is a schematic diagram of the initial state of the clamping forceps according to an embodiment of the present invention;
[0027] Figure 2 This is a schematic diagram of the contact between the elastic sheet and the first ratchet tooth of the ratchet component according to an embodiment of the present invention;
[0028] Figure 3 This is a schematic diagram of the completed push clamp according to an embodiment of the present invention;
[0029] Figure 4 This is a schematic diagram of the clamping process completed according to an embodiment of the present invention;
[0030] Figure 5A This is a schematic diagram of the initial position of the body assembly according to an embodiment of the present invention;
[0031] Figure 5B This is a partially enlarged schematic diagram of the initial position of the body assembly according to an embodiment of the present invention;
[0032] Figure 6 This is a schematic diagram of the initial position of the clamp head assembly according to an embodiment of the present invention;
[0033] Figure 7 This is a schematic diagram of the trigger structure according to an embodiment of the present invention;
[0034] Figure 8 This is a schematic diagram of the elastic sheet structure according to an embodiment of the present invention;
[0035] Figure 9 This is a schematic diagram of the trigger cover structure according to an embodiment of the present invention;
[0036] Figure 10A This is a schematic diagram of the device body assembly of an embodiment of the present invention from the initial position to the push clamp state 1 position;
[0037] Figure 10B This is a partially enlarged schematic diagram of the body assembly of an embodiment of the present invention from the initial position to the push-clamp state 1 position;
[0038] Figure 11 This is a schematic diagram of the jaw assembly of an embodiment of the present invention moving from the initial position to the push-clamp state 1 position;
[0039] Figure 12A This is a schematic diagram of the device body assembly of an embodiment of the present invention moving from the push-clamp state 1 position to the push-clamp state 2 position;
[0040] Figure 12B This is a partially enlarged schematic diagram of the body assembly of an embodiment of the present invention, showing the movement from position 1 to position 2.
[0041] Figure 13 This is a schematic diagram of the jaw assembly of an embodiment of the present invention moving from the push-clamp state 1 position to the push-clamp state 2 position;
[0042] Figure 14A This is a schematic diagram of the device body assembly of an embodiment of the present invention moving from the push clamp state 2 position to the locking ligation clamp 3 position;
[0043] Figure 14B This is a partially enlarged schematic diagram of the device body assembly of an embodiment of the present invention from the push clamp state 2 position to the locking ligation clamp 3 position;
[0044] Figure 15 This is a schematic diagram of the jaw assembly of an embodiment of the present invention moving from the push clamp position 2 to the locked ligation clamp position 3;
[0045] Figure 16This is a schematic diagram of the elastic sheet in the open position 1 after the clamping operation according to an embodiment of the present invention;
[0046] Figure 17A This is a schematic diagram showing the positions of the reset operation elastic plate and ratchet component according to an embodiment of the present invention;
[0047] Figure 17B This is an axial view of the reset operation elastic plate and ratchet component according to an embodiment of the present invention;
[0048] Figure 18 This is a schematic diagram of the ratchet component structure according to an embodiment of the present invention;
[0049] Figure label,
[0050] Clamping head assembly 1, clamping head 11, first jaw position 111, second jaw position 112, third jaw position 113, outer tube 12, ligating clip 13, body assembly 2, trigger 21, first slot 211, second slot 212, first fixing point 213, first latch 214, second latch 215, trigger table 216, limit rib plate table 217, trigger circular table 218, push-pull rod circular table 219, trigger cover plate 22 Second fixing point 221, first locking hole 222, second locking hole 223, elastic sheet 23, third slot 231, fourth slot 232, first reset slot 233, second reset slot 234, first bending angle 235, second bending angle 236, ratchet component 24, ratchet 241, ratchet sliding part 242, ratchet back 243, sliding component 25, push-pull rod 251, reset spring 252, first buffer area 26; Detailed Implementation
[0051] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0052] In this article, "up" and "down" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.
[0053] In the following description, the end of each component closer to the operator is defined as the proximal end, and the end farther from the operator is defined as the distal end. These terms "proximal end" and "distal end" are used only for simplicity and clarity and should not be construed as limiting the scope of this invention.
[0054] like Figure 1-18As shown, an embodiment of the present invention discloses a clamping clamp, including a clamp head assembly 1 and a clamp body assembly 2. The proximal end of the clamp head assembly 1 is connected to the distal end of the clamp body assembly 2. The clamp head assembly 1 includes a clamp head 11 and an outer tube 12, which is sleeved on a ligation clamp 13. The clamp body assembly 2 includes a trigger component, a ratchet component 24 and a sliding component 25. The trigger component includes a trigger body and an elastic component.
[0055] Pulling the trigger body towards the proximal end drives the elastic component to jump in the ratchet component 24, causing the sliding component 25 to slide towards the distal end, thereby controlling the closure of the ligation clip 13;
[0056] Pushing the trigger body towards the distal end drives the elastic component to jump in the ratchet component 24, causing the sliding component 25 to slide towards the proximal end, thereby controlling the opening of the ligation clip 13.
[0057] Here, the trigger body includes a trigger 21 and a trigger cover 22, with the trigger cover 22 fastened to the trigger 21;
[0058] The elastic component is an elastic sheet 23, which is bent twice to form a first bending angle 235 and a second bending angle 236. The trigger 21 is provided with a first slot 211 and a second slot 212. The end portion of the first bending angle is inserted into the first slot 211, and the area between the first bending angle and the second bending angle is inserted into the second slot 212. During installation, these two areas of the elastic sheet 23 are inserted as a whole and assembled into the first slot 211 and the second slot 212 respectively, so that the first slot 211 and the second slot 212 guide and assemble the elastic sheet 23.
[0059] It should be noted that the angles of the first slot 211 and the second slot 212 are consistent with the bending angle of the elastic sheet 23, which facilitates the proper positioning of the elastic sheet 23.
[0060] The elastic plate 23 includes a third slot 231 and a fourth slot 232. The trigger 21 is provided with a first fixing point 213 for fixing the fourth slot 232. The trigger cover plate 22 is provided with a second fixing point 221 for fixing the third slot 231.
[0061] In this embodiment of the utility model, a design of first fixing point 213 and second fixing point 221 is adopted. When the elastic piece 23 is installed in the first slot 211 and the second slot 212 of the trigger, the left and right third slots 231 and fourth slots 232 of the elastic piece 23 are respectively locked on the first fixing point 213 and the second fixing point 221, which can be used to fix the axial position of the elastic piece 23 and prevent the elastic piece 23 from moving.
[0062] After the elastic plate 23 is inserted into the trigger 21, the trigger cover plate 22 is fastened onto the trigger 21. The trigger 21 is provided with a first latch 214 and a second latch 215. The trigger cover plate 22 is provided with a first latch hole 222 and a second latch hole 223. The first latch 214 is fastened into the first latch hole 222, and the second latch 215 is fastened into the second latch hole 223, thereby fixing one end of the elastic plate 23 between the trigger cover plate 22 and the trigger 21.
[0063] In this embodiment of the utility model, the first locking hole 222 and the second locking hole 223 on the trigger cover plate 22 are tightly fitted and pressed together with the first locking hole 214 and the second locking hole 215 on the trigger 21, thereby pressing and fixing the elastic sheet 23 inside, effectively preventing the elastic sheet 23 from moving to the left and right sides.
[0064] The elastic sheet 23 also includes a first reset groove 233 and a second reset groove 234, which are located on both sides of the second bending angle 236 and are distributed in a symmetrical structure.
[0065] There are two ratchet components 24, located on both sides of the elastic sheet. Each ratchet component 24 includes evenly distributed ratchet teeth 241, a ratchet sliding part 242, and a ratchet back 243. The ratchet component 24 is integrated with the body assembly 2 into a single structure.
[0066] The second bending angle 236 engages with the two ratchet teeth 241; when the reset operation is performed, the first reset groove 233 and the second reset groove 234 contact the back of the ratchet teeth 243 to guide the movement.
[0067] Specifically, the first reset groove 233 and the second reset groove 234 cooperate with the back of the ratchet 243 of the ratchet part. The elastic plate 23 slides down along the back of the ratchet 243 to reset. The symmetrical structure of the two ratchet parts 24 ensures that the elastic plate 23 is always subjected to balanced force during movement and always moves along the structure of the ratchet part 24. The amount of deformation of the elastic plate 23 during movement is also within a controllable range.
[0068] The sliding component 25 includes a push-pull rod 251 and a return spring 252, with the return spring 252 sleeved on the push-pull rod 251.
[0069] In the initial state, the trigger plate 216 is in contact with the limiting rib plate 217, thereby limiting the trigger angle. The elastic plate 23 and the ratchet component 24 are separate, and the elastic plate 23 does not contact the ratchet component 24.
[0070] The clamping operation process of the clamping pliers in this embodiment of the utility model is as follows:
[0071] When performing the clamping operation, press the trigger 21 to rotate counterclockwise around the circular fixed post on the clamping instrument housing. The trigger table 216 moves away from the limiting rib table 217, and the trigger circular table 218 contacts the push-pull rod circular table 219, pushing the push-pull rod 251 to the distal end. The elastic plate 23 rotates onto the first ratchet of the ratchet component 24. At this time, the ligation clamp 13 inside the outer tube 12 is fully pushed to the first position 111 of the jaws.
[0072] Since the return spring 252 abuts against the push-pull rod platform 219, when the push-pull rod 251 moves to the far end, the return spring 252 is compressed and subjected to force.
[0073] Here, the circular platform 219 of the push-pull rod and the circular platform 218 of the trigger are designed to be conformally matched. The circular platform 219 of the push-pull rod is a spherical surface, and the circular platform 218 of the trigger is a concave spherical surface that conforms to the circular platform 219 of the push-pull rod.
[0074] Specifically, when the trigger 21 is closed and rotated, the second bending angle 236 of the elastic plate 23 will engage with the ratchet of the ratchet component 24. This engagement is designed as a sliding tight fit, which causes the trigger to rotate counterclockwise and at the same time serves as a reverse locking mechanism. That is, when the trigger 21 compresses the return spring 252, the trigger 21 will not be returned to its initial position by the reaction force of the return spring 252.
[0075] Here, when the elastic plate 23 abuts against the first tooth of the ratchet component 24, a "click" sound can be clearly heard, which allows the operator to know that the instrument is in the state of push-clamp operation.
[0076] This embodiment of the invention utilizes the good resilience of the elastic sheet 23 to keep it engaged with the first tooth of the ratchet component 24, which can achieve a self-locking function. When the trigger 21 is released, the trigger 21 can remain in the closed state and will not return to the initial position.
[0077] Continue pressing the trigger 21. The circular platform 219 of the push-pull rod always presses against the circular platform 218 of the trigger in the proximal direction, causing the trigger 21 to rotate and thus causing the push-pull rod 251 to continue moving in the distal direction. The return spring 252 continues to be compressed and subjected to force. Due to the pressing action of the trigger 21, the elastic plate 23 begins to slide over the ratchet teeth of the ratchet component 24. This process is while the hand is constantly pressing the trigger 21. When the elastic plate 23 is engaged with the last tooth of the ratchet component 24, the ligation clip 13 in the outer tube 12 reaches the second position 112 of the jaws. The ligation clip 13 has reached the final position of the jaws, thus completing the push-clamp operation. At this time, release the trigger 21. The elastic plate 23 is now in contact with the root of the last tooth of the ratchet component 24 and achieves reverse locking.
[0078] It should be noted that when the spring plate 23 reaches the first tooth, the jaws have not yet closed. As it slides from the first ratchet to the last ratchet, the closing clamp 13 is gradually pushed out during the movement.
[0079] The clamping and closing process is as follows:
[0080] After the clamping forceps complete the clamping operation, continue to press the trigger 21 to rotate the trigger 21 and thus cause the push-pull rod 251 to continue moving further to the distal end. The return spring 252 continues to be compressed and subjected to force. At this time, since the elastic plate 23 has gone through all the ratchet teeth of the ratchet component 24, the elastic plate 23 is completely disengaged from the ratchet component 24. The elastic plate 23 springs back from deformation to the initial state. The trigger 21 closes and rotates to the final position. The push-pull rod 251 continues to move forward and thus drives the outer tube 12 to move forward together, so that the ligation clamp 13 completes the locking operation at the third position 113 of the jaws.
[0081] Here, as the elastic piece 23 continues to move upward, but there is no ratchet at the top, the inventor has therefore set a buffer zone 26 to effectively prevent misoperation. If the closing operation does not lock the closure clip 13, the elastic piece 23 will slide back into the buffer zone 26 of the ratchet component 24 when the trigger 21 is released, thus facilitating the doctor to correct and adjust the opening position of the ligation clip 13 in a timely manner during the operation.
[0082] Here, the installation positions of the elastic plate 23 and the ratchet component 24 should ensure that the elastic plate 23 can reliably lock the trigger 21 in the reverse direction when it reaches each tooth root position on the ratchet component 24, and the force it can withstand is much greater than the return force of the return spring 252. This avoids the trigger 21 from being reversed due to the return force of the return spring 252, which would affect the displacement, falling off, or tilting of the clamp ligation clip. This avoids the doctor's misoperation during the operation. This reliable mechanical structure is designed to improve the stability, reliability, and safety of the instrument's function and operation.
[0083] The clamp reset process is as follows:
[0084] After the clamping pliers complete the clamping operation, the trigger 21 is released. Under the action of the return spring 252, the push-pull rod 251 is reset towards the proximal end, which in turn drives the trigger 21 to reset, thereby completing the reset of the elastic plate 23.
[0085] The first reset groove 233 and the second reset groove 234 of the elastic plate 23 respectively cooperate with the back of the ratchet 243. The elastic plate 23 slides down along the back of the ratchet 243 to reset. The amount of deformation of the elastic plate 23 during the movement is also within a controllable range.
[0086] Simultaneously, the push-pull rod 251 resets, causing the clamp head assembly 1 to return to its initial state. At this point, the ligation clamp has completed the closure operation on the surgical tissue and remains in the body. The entire clamping instrument has been reset and returned to its initial position, awaiting the next cycle of operation.
[0087] With this design, the present invention has at least the following advantages:
[0088] (1) The operation of this utility model can be stopped and started at any time by closing the trigger, which makes it convenient for doctors to adjust the relative position of the instrument and the tissue at any time and improve the quality of surgery.
[0089] (2) The elastic plate and ratchet component of this utility model will make a "click-click-click" sound during the sliding process of pushing and clamping. When entering the closing operation, the sound disappears. The sound can indicate to the doctor the two operation states of pushing and clamping and closing. It can play a safety warning role during the operation of the instrument.
[0090] (3) This utility model has a simple structure, good effect, low cost and easy process implementation.
[0091] Those skilled in the art will readily conceive of other embodiments of the present invention upon considering the utility model disclosed in the specification and embodiments. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.
[0092] It should be understood that this invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.
Claims
1. A clamping clamp, comprising a clamp head assembly and a clamp body assembly, wherein a proximal end of the clamp head assembly is connected to a distal end of the clamp body assembly, the clamp head assembly comprising a clamp head and an outer tube, the outer tube being sleeved on a ligation clamp, characterized in that, The device assembly includes a trigger assembly, a sliding assembly, and a ratchet component; the trigger assembly includes a trigger body and an elastic component. Pulling the trigger body towards the proximal end drives the elastic component to skip teeth in the ratchet component, causing the sliding assembly to slide towards the distal end, thereby controlling the closure of the ligation clip; Pushing the trigger body towards the distal end drives the elastic component to jump within the ratchet component, causing the sliding assembly to slide towards the proximal end, thereby controlling the opening of the ligation clip.
2. The clamping pliers as described in claim 1, characterized in that, The trigger body includes a trigger and a trigger cover plate, the trigger cover plate being fastened to the trigger; The elastic component is an elastic sheet, and the trigger is provided with a first slot and a second slot. A portion of the elastic sheet is located in the first slot and the second slot inside the trigger. The elastic sheet includes a third slot and a fourth slot. The trigger is provided with a first fixing point for fixing the fourth slot, and the trigger cover is provided with a second fixing point for fixing the third slot.
3. The clamping forceps as described in claim 2, characterized in that, The trigger cover being fastened to the trigger means that the trigger is provided with a first latch and a second latch, and the trigger cover is provided with a first latch hole and a second latch hole respectively. The first latch is fastened into the first latch hole, and the second latch is fastened into the second latch hole.
4. The clamping forceps as described in claim 3, characterized in that, The elastic sheet is bent twice to form a first bending angle and a second bending angle; the elastic sheet also includes a first reset groove and a second reset groove; the end portion of the first bending angle is engaged in the first groove, and the area between the first bending angle and the second bending angle is engaged in the second groove.
5. The clamping pliers as described in claim 4, characterized in that, The ratchet component includes ratchet teeth, a ratchet sliding portion, and a ratchet back; the upper end face of the ratchet component has uniformly distributed ratchet teeth, and the ratchet back has a smooth structure.
6. The clamping pliers as described in claim 5, characterized in that, The elastic plate also includes a first reset groove and a second reset groove; the second bending angle rests on the ratchet component for meshing motion; when a reset operation is performed, the first reset groove and the second reset groove are used to contact the back of the ratchet for guiding motion.
7. The clamping pliers as described in claim 6, characterized in that, The sliding part includes a push-pull rod and a return spring, with the return spring sleeved on the push-pull rod.
8. The clamping pliers as described in claim 7, characterized in that, When performing the clamping operation, pressing the trigger moves the push-pull rod towards the distal end. The return spring is compressed and the elastic plate rotates onto the first ratchet tooth of the ratchet component. At this time, the ligation clamp is fully pushed to the first position of the jaws. Pressing the trigger again causes the elastic plate to slide past the ratchet teeth of the ratchet component. When the elastic plate is engaged with the last tooth of the ratchet component, the ligation clamp reaches the second position of the jaws, completing the clamping operation.
9. The clamping pliers as described in claim 8, characterized in that, When performing the clamping operation, continue pressing the trigger, the return spring continues to be compressed and stressed, the elastic plate completely disengages from the ratchet of the ratchet component, the elastic plate springs back to the initial state and slides along the buffer area of the ratchet component, the trigger closes and rotates to the final position, so that the ligation clamp completes the locking operation at the third position of the jaws.
10. The clamping forceps as described in claim 9, characterized in that, When the reset operation is performed, the trigger is released, and the first reset groove and the second reset groove of the elastic plate engage with the back of the ratchet, respectively. The elastic plate slides downward along the back of the ratchet to reset, thereby resetting the push-pull rod towards the proximal end, thus completing the reset of the elastic plate.