A clamp closing assembly and clamp applicator

Abstract

This invention proposes a clamp closure assembly, including clamps and a firing plate for closing the clamps. The clamps include a clamp fixing plate, the distal end of which has a first clamp arm and a second clamp arm for forming jaws with openings facing distally. The distal end of the firing plate has a support base plate located below the clamps. A first slot is formed at the bottom of the first clamp arm, and a second slot is formed at the bottom of the second clamp arm, both extending in a proximal-distal direction. During the closing of the clamps by the firing plate, the distal left side of the support base plate is always inserted into the first slot from right to left and moves distally along the first slot, while the distal right side of the support base plate is always inserted into the second slot from left to right and moves distally along the second slot. This reduces the phenomenon of the two clamp arms crossing, twisting, and becoming irregularly shaped when clamping hemostatic clips, improving the success rate of surgery. This invention also proposes a clamp applicator having the above-described clamp closure assembly.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more particularly to a clamp closure assembly and clamp applicator. Background Technology

[0002] During surgical procedures, to fully expose the surgical field, it is necessary to ligate the blood vessels surrounding the target tissue to stop bleeding. Hemostasis has become one of the core basic surgical techniques. Almost every surgical procedure on any part of the human body involves bleeding and hemostasis, and generally, hemostasis is achieved by using a clamp to close the wound.

[0003] During the use of the clamp applicator, the clamp arms may cross, twist, or become deformed, resulting in poor ligation of blood vessels or even failure to stop bleeding. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the above-mentioned technologies, the present invention provides solutions to at least some extent. Therefore, the first objective of the present invention is to provide a clamp closure assembly that reduces the phenomena of crossed, twisted, and irregularly shaped clamp arms when clamping hemostatic clips, thereby improving the success rate of surgery.

[0006] A second objective of the present invention is to provide an applicator having the aforementioned clamp closing assembly.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0009] The present invention provides a clamp closing assembly, including clamps and a firing tab for closing the clamps; the clamps include a clamp fixing plate, the distal end of the clamp fixing plate having a first clamp arm and a second clamp arm for forming jaws with openings facing distally; the distal end of the firing tab has a support base plate located below the clamps; a first slot is formed at the bottom of the first clamp arm, and a second slot is formed at the bottom of the second clamp arm, both the first slot and the second slot extending in a proximal direction; during the process of the firing tab closing the clamps, the left distal end of the support base plate is always inserted into the first slot from right to left and moves distally along the first slot, and the right distal end of the support base plate is always inserted into the second slot from left to right and moves distally along the second slot.

[0010] Optionally, the firing plate can move between a proximal initial position and a distal termination position arranged from near to far; during the movement of the firing plate from the proximal initial position to the distal termination position, the distal left side of the support base plate is always inserted into the first slot from right to left and moves distally along the first slot, and the distal right side of the support base plate is always inserted into the second slot from left to right and moves distally along the second slot.

[0011] Optionally, the left side of the support base plate is provided with an upward first sidewall for squeezing the first clamp arm to move toward the second clamp arm, and the right side of the support base plate is provided with an upward second sidewall for squeezing the second clamp arm to move toward the first clamp arm; the support base plate has a first action position extending distally from the first sidewall and the second sidewall; during the closing of the clamp by the firing plate, the distal left part of the first action position is always inserted into the first slot from right to left and moves distally along the first slot, and the distal right part of the first action position is always inserted into the second slot from left to right and moves distally along the second slot.

[0012] Optionally, the left distal end of the first action position has a first protrusion extending to the left, and the right distal end of the first action position has a second protrusion extending to the right; during the closing clamping process of the firing plate, the first protrusion is always inserted into the first slot from right to left and moves distally along the first slot, and the second protrusion is always inserted into the second slot from left to right and moves distally along the second slot.

[0013] Optionally, the firing tip is movable between a proximal initial position and a distal termination position arranged from near to far; the first clamp arm includes a first clamp arm body and a first slot, the distal end of the first clamp arm body having a first closing clamp portion, a first connecting portion and a first receiving portion connected sequentially from near to far; the second clamp arm includes a second clamp arm body and a second slot, the distal end of the second clamp arm body having a second closing clamp portion, a second connecting portion and a second receiving portion connected sequentially from near to far; when the firing tip is in the distal termination position, the support base plate is located near the first receiving portion and the second receiving portion.

[0014] Optionally, the first clamp arm includes a first clamp arm body and a first slot. The distal end of the first clamp arm body has a first closing clamp portion, a first connecting portion, and a first receiving portion connected sequentially from near to far. The second clamp arm includes a second clamp arm body and a second slot. The distal end of the second clamp arm body has a second closing clamp portion, a second connecting portion, and a second receiving portion connected sequentially from near to far. The bottom of the first connecting portion is provided with a downward-facing first connecting wall. The bottom end of the first connecting wall has a first base plate bent toward the second clamp arm, and a first slot is formed between the first base plate and the first clamp arm body. The bottom of the second connecting portion is provided with a downward-facing second connecting wall. The bottom end of the second connecting wall has a second base plate bent toward the first clamp arm, and a second slot is formed between the second base plate and the second clamp arm body.

[0015] Optionally, the cantilever end of the first base plate has a first distal portion and a first proximal portion, the first distal portion being offset to the left relative to the first proximal portion; the cantilever end of the second base plate has a second distal portion and a second proximal portion, the second distal portion being offset to the right relative to the second proximal portion.

[0016] Optionally, the left side of the support base plate is provided with an upward first sidewall for squeezing the first clamp arm to move toward the second clamp arm, and the right side of the support base plate is provided with an upward second sidewall for squeezing the second clamp arm to move toward the first clamp arm; the firing plate also includes a limiting top plate, the left side of the limiting top plate is fixedly connected to the top of the first sidewall, the right side of the limiting top plate is fixedly connected to the top of the second sidewall, and both the first clamp arm and the second clamp arm are located between the limiting top plate and the support base plate.

[0017] Optionally, a third slot is provided at the top of the first clamp arm, and a fourth slot is provided at the top of the second clamp arm. Both the third and fourth slots extend in the proximal direction. During the closing of the clamp by the firing clip, the distal end of the limiting top plate can be inserted into the third and fourth slots from the proximal to the distal direction. After the limiting top plate is inserted into the third and fourth slots, the firing clip continues to move distally, and the limiting top plate can move distally along the third and fourth slots. The third slot can move from the limiting top plate to the fourth slot, and the fourth slot can move from the limiting top plate to the third slot, until the jaws are completely closed.

[0018] A second aspect of the present invention provides a clamping device having a clamping closure assembly as described above.

[0019] (III) Beneficial Effects

[0020] The beneficial effects of this invention are:

[0021] 1. By opening a first slot at the bottom of the first clamp arm and a second slot at the bottom of the second clamp arm, the distal end of the firing plate is always inserted into the first and second slots and moves distally along the first and second slots during the clamping process of the firing plate. The firing plate acts on the first and second slots to constrain the first and second clamp arms. When the first and second compressive force directions intersect each other, the firing plate constrains the first clamp arm through the first slot and the firing plate constrains the second clamp arm through the second slot, so that there is no relative misalignment between the first and second clamp arms. This avoids the phenomenon of the two clamp arms of the hemostatic clip crossing, twisting and deforming when the clamp closing assembly clamps the hemostatic clip, thus improving the success rate of the operation.

[0022] 2. A first slot is formed by setting a first connecting wall between the first connecting part and the first base plate, which ensures the strength of the first slot while avoiding the need to set a connecting wall between the first closing clamp and the first base plate to form the first slot; similarly, a second slot is formed by setting a second connecting wall between the second connecting part and the second base plate, which ensures the strength of the first slot while avoiding the need to set a connecting wall between the second closing clamp and the second base plate to form the second slot; thus, it is convenient for the firing plate to cooperate with the first slot and the second slot, and avoids interference between the connecting wall and the connection between the side wall (first side wall and second side wall) and the supporting base plate during the closing clamp process. Attached Figure Description

[0023] The present invention is described with reference to the following figures:

[0024] Figure 1 This is a schematic diagram of the distal cross-section of an applicator including a clamp closing assembly, as illustrated in this invention.

[0025] Figure 2 yes Figure 1 Exploded view of the clamp closing assembly;

[0026] Figure 3 This is a three-dimensional structural diagram of the clamp closing assembly in Embodiment 1 of the present invention from a first perspective;

[0027] Figure 4 This is a three-dimensional structural diagram of the clamp closing assembly in Embodiment 1 of the present invention from a second perspective;

[0028] Figure 5 This is a top view schematic diagram of the clamp closing assembly in Embodiment 1 of the present invention;

[0029] Figure 6 This is a side view of the clamp closing assembly in Embodiment 1 of the present invention;

[0030] Figure 7 This is a bottom view of the clamp closing assembly in Embodiment 1 of the present invention.

[0031] [Explanation of Labels in the Attached Image]

[0032] 1: Clamping pliers;

[0033] 11: Clamp fixing plate;

[0034] 111: Waist-shaped hole;

[0035] 12: First clamp arm;

[0036] 13: Second clamp arm;

[0037] 141: First closing clamp; 142: First connecting part; 143: First receiving part; 144: Third slot;

[0038] 15: First slot;

[0039] 151: First connecting wall; 152: First base plate; 153: First distal portion; 154: First proximal portion;

[0040] 161: Second closing clamp; 162: Second connecting part; 163: Second receiving part; 164: Fourth slot;

[0041] 17: Second slot;

[0042] 171: Second connecting wall; 172: Second base plate; 173: Second distal portion; 174: Second proximal portion;

[0043] 2: Firing plate;

[0044] 21: Support base plate;

[0045] 211: First functional position; 212: First boss; 213: Second boss; 214: Support position; 215: Support rib position;

[0046] 22: First sidewall;

[0047] 221: First pack of clamps; 222: First card;

[0048] 23: Second sidewall;

[0049] 231: Second pack of clamps; 232: Second card;

[0050] 24: Blocking component;

[0051] 25: Limiting top plate;

[0052] 251: First notch; 252: Second notch; 253: Second functional position;

[0053] 3: Pressing blocks;

[0054] 4: Sleeve. Detailed Implementation

[0055] To better explain and facilitate understanding of the present invention, a detailed description of the invention is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that, as used herein, "near" refers to the side closer to the operator, and "far" refers to the side closer to the patient. The directional terms "upper," "lower," "front," "back," "left," and "right" used herein are... Figure 1 and Figure 3 The orientation is taken as a reference, where the direction from near to far is also the direction from back to front.

[0056] To clearly illustrate the technical problem actually solved by the present invention, an exemplary clamp closing assembly and an exemplary clamping device are explained below. However, it should be understood that the clamp closing assembly and clamping device of the present invention should not be limited to the exemplary clamp closing assembly and clamping device of the exemplary clamping device described herein; rather, these examples are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0057] like Figure 1 and Figure 2 As shown, the exemplary clamp closing assembly includes clamps 1 and a firing clip 2 for closing the clamps. Clamps 1 include a clamp fixing plate 11, the distal end of which has a first clamp arm 12 and a second clamp arm 13 extending in a proximal direction. The first clamp arm 12 and the second clamp arm 13 are arranged sequentially from left to right, forming a jaw with an opening facing distally between them. The distal end of the firing clip 2 has a support base plate 21 located below the clamps. An upward-facing first sidewall 22 and an upward-facing second sidewall 23 are respectively provided on the left and right sides of the support base plate 21. The lengths of the first sidewall 22 and the second sidewall 23 are less than the length of the support base plate 21 and are located at the distal end of the support base plate 21. The first clamp arm 12 and the second clamp arm 13 are located between the first sidewall 22 and the second sidewall 23, with the first sidewall 22 closer to the first clamp arm 12 and the second sidewall 23 closer to the second clamp arm 13. Generally, the first sidewall 22 and the second sidewall 23 are arranged side-by-side in the left-right direction. When the hemostatic clip to be clamped is stuck in the jaws, as the firing plate 2 closes the clamp, the firing plate 2 moves further away, the first side wall 22 squeezes the first clamp arm 12 and moves it toward the second clamp arm 13, and the second side wall 23 squeezes the second clamp arm 13 and moves it toward the first clamp arm 12, until the jaws are completely closed, that is, the hemostatic clip is clamped.

[0058] During the reset process of the firing pin 2, the firing pin 2 moves closer, and the squeezing action of the firing pin 2 on the first clamp arm 12 and the second clamp arm 13 is relaxed. When both the first clamp arm 12 and the second clamp arm 13 are elastic elements, the restoring force of the elastic elements can be used to make the first clamp arm 12 move away from the second clamp arm 13, and the second clamp arm 13 move away from the first clamp arm 12, until the firing pin 2 is reset. At this time, the first clamp arm 12 and the second clamp arm 13 return to their initial positions, that is, the jaws are opened and reset.

[0059] As described above, in actual use (i.e., during the actual closing of the clamp by the firing pin 2), the two clamp arms of the hemostatic clip may cross, twist, or become deformed. The applicant's research revealed that the main factors causing this poor closure are: during the clamp closing process, the first compressive force exerted by the first sidewall 22 on the first clamp arm 12 is complex, and the second compressive force exerted by the second sidewall 23 on the second clamp arm 13 is also complex. There is a situation where the directions of the first and second compressive forces intersect. Thus, during the clamping process, as the first clamp arm 12 and the second clamp arm 13 approach each other, they may tilt upwards or downwards to varying degrees, causing the two clamp arms of the hemostatic clip to cross, twist, and become deformed, resulting in poor clamping.

[0060] To reduce the occurrence of poor clamping of the hemostatic clip during the clamping process, an exemplary clamping device includes a clamping block 3 and a sleeve 4 for accommodating the proximal end of the clamp and the proximal end of the firing pin 2. The clamping block 3 is located above the clamp, and the proximal end of the clamping block 3 is inserted into and fixed in the sleeve 4, pressing the clamp tightly. By using the clamping block 3 to upper limit the clamp, the occurrence of poor clamping of the hemostatic clip during the clamping process is reduced. However, the applicant discovered that in the clamping device of the above-mentioned clamping device, the distal end of the clamp and the distal end of the firing plate 2 are usually cantilever beam structures. During the process of the firing plate 2 closing the clamp, the first extrusion force of the first sidewall 22 acting on the first clamp arm 12 and the second extrusion force of the second sidewall 23 acting on the second clamp arm 13 are both quite complex. There are often situations where the distal end of the firing plate 2 and / or the distal end of the clamp tilts downward. Thus, when the directions of the first extrusion force and the second extrusion force intersect each other, the first clamp arm 12 and the second clamp arm 13 will still tilt upward or downward to different degrees, causing the two clamp arms of the hemostatic clamp to be clamped to cross, twist and become deformed, resulting in poor clamping.

[0061] In summary, whether in the exemplary clamp closing assembly or in the clamping chamber device of the exemplary clamp applicator, the first clamping force direction and the second clamping force direction intersect each other during the clamping process, causing the first clamping arm 12 and the second clamping arm 13 to be relatively misaligned, resulting in the two clamping arms of the hemostatic clamp to be clamped crossing, twisting and deforming.

[0062] Therefore, the present invention provides a clamp closing assembly. To better explain and facilitate understanding of the invention, it will be described in detail below with reference to the accompanying drawings and specific embodiments. Although exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein.

[0063] Example 1

[0064] like Figures 3 to 7As shown, this embodiment provides a clamp closing assembly, which includes clamps and a firing plate 2 for closing the clamps.

[0065] The clamps and firing pin 2 have the structural design described above, and will not be repeated here. Furthermore, as... Figure 3 and Figure 4 As shown, a first slot 15 is provided at the bottom of the first clamp arm 12, and a second slot 17 is provided at the bottom of the second clamp arm 13. Both the first slot 15 and the second slot 17 extend in the proximal direction. During the closing of the clamp by the firing plate 2, the left side of the far end of the support base plate 21 is always inserted into the first slot 15 from right to left and moves further away along the first slot 15, while the right side of the far end of the support base plate 21 is always inserted into the second slot 17 from left to right and moves further away along the second slot 17.

[0066] By configuring the first slot 15 and the second slot 17 in this way, during the closing of the clamp by the firing plate 2, the distal end of the firing plate 2 is always inserted into the first slot 15 and the second slot 17 and moves distally along the first slot 15 and the second slot 17. The firing plate 2 acts on the first slot 15 and the second slot 17 to constrain the first clamp arm 12 and the second clamp arm 13. When the first compressive force direction and the second compressive force direction intersect each other, the firing plate 2 constrains the first clamp arm 12 through the first slot 15 and the second clamp arm 13 through the second slot 17, so that there will be no relative misalignment between the first clamp arm 12 and the second clamp arm 13. This avoids the phenomenon of the two clamp arms of the hemostatic clamp crossing, twisting and deforming when the clamp closing assembly clamps the hemostatic clamp, thus improving the success rate of the operation.

[0067] It should be noted that, as shown above, during the clamping process, due to the action of the first and second squeezing forces, the distal end of the clamp and the distal end of the firing plate 2 may tilt upward (downward) and / or twist. However, there is no relative misalignment between the first clamp arm 12 and the second clamp arm 13, so it does not affect the stable closure of the clamp on the hemostatic clip.

[0068] Preferably, the firing plate 2 is movable between a proximal initial position and a distal termination position arranged from near to far. During the movement of the firing plate 2 from the proximal initial position to the distal termination position, the distal left side of the support base plate 21 is always inserted into the first slot 15 from right to left and moves distally along the first slot 15, while the distal right side of the support base plate 21 is always inserted into the second slot 17 from left to right and moves distally along the second slot 17. This ensures that the firing plate 2 is inserted into the first slot 15 and the second slot 17 from beginning to end, guaranteeing the smooth and stable clamping of the firing plate 2 with the clamp, and avoiding the problem of inconvenience or clamping failure caused by the firing plate 2 needing to be inserted into the first slot 15 and the second slot 17 during actual use.

[0069] It should be noted that the proximal initial position can be the initial position of the firing piece 2 during the closing clamping process, and the distal termination position can be the termination position of the firing piece 2 during the closing clamping process. Of course, the proximal initial position can also be located proximal to the initial position of the firing piece 2 during the closing clamping process, and the distal termination position can also be located distal to the termination position of the firing piece 2 during the closing clamping process.

[0070] In the clamp closing assembly proposed in this embodiment, after the left distal end of the support base plate 21 is inserted into the first slot 15, the smaller the first insertion gap left in the plane perpendicular to the left distal end of the support base plate 21, the more conducive it is for the firing plate 2 to constrain the first clamp arm 12 through the first slot 15. However, the first insertion gap should not be too small, so as not to affect the movement of the firing plate 2 to the distance. Similarly, after the right distal end of the support base plate 21 is inserted into the second slot 17, the smaller the second insertion gap left in the plane perpendicular to the right distal end of the support base plate 21, the more conducive it is for the firing plate 2 to constrain the second clamp arm 13 through the second slot 17. However, the second insertion gap should not be too small, so as not to affect the movement of the firing plate 2 to the distance.

[0071] Preferably, the support base plate 21 has a first action position 211 extending distally from the first sidewall 22 and the second sidewall 23. During the closing of the clamp by the firing plate 2, the distal left portion of the first action position 211 is always inserted into the first slot 15 from right to left and moves distally along the first slot 15, while the distal right portion of the first action position 211 is always inserted into the second slot 17 from left to right and moves distally along the second slot 17. Thus, by setting the first action position 211 extending distally from the first sidewall 22 and the second sidewall 23 to insert into the first slot 15 and the second slot 17, the cooperation between the support base plate 21 and the first slot 15 and the second slot 17 is facilitated, while further enhancing the downward limiting effect of the support base plate 21 on the first clamp arm 12 and the second clamp arm 13.

[0072] More preferably, the distal left side of the first actuating position 211 has a first protrusion 212 extending to the left, and the distal right side of the first actuating position 211 has a second protrusion 213 extending to the right; during the closing clamping process of the firing plate 2, the first protrusion 212 is always inserted into the first slot 15 from right to left and moves distally along the first slot 15, and the second protrusion 213 is always inserted into the second slot 17 from left to right and moves distally along the second slot 17. In this way, it is convenient for the first actuating position 211 to cooperate with the first slot 15 and the second slot 17, and interference is unlikely to occur during their respective operations.

[0073] In this embodiment, as Figure 3 and Figure 5As shown, the first protrusion 212 is located at the farthest left side of the first actuating position 211, and the second protrusion 213 is located at the farthest right side of the first actuating position 211. It is conceivable that the closer the position of the support base plate 21 of the firing plate 2 acting on the first slot 15 and the second slot 17 is to the farthest end of the clamp, the better the constraint exerted by the support base plate 21 on the first clamp arm 12 and the second clamp arm 13 through acting on the first slot 15 and the second slot 17. Therefore, by positioning the first protrusion 212 at the farthest left side of the first actuating position 211 and the second protrusion 213 at the farthest right side of the first actuating position 211, the position of the support base plate 21 acting on the first slot 15 and the second slot 17 is as close as possible to the farthest end of the clamp, thus providing better constraint to the first clamp arm 12 and the second clamp arm 13 through acting on the first slot 15 and the second slot 17.

[0074] More preferably, the supporting base plate 21 has a supporting position 214 located near and connected to the first functional position 211. The upper surface of the supporting position 214 is flush with the upper surface of the first functional position 211. The first functional position 211 is sheet-like, and the thickness of the supporting position 214 is greater than the thickness of the first functional position 211. A downward supporting rib 215 is provided at the bottom of the first functional position 211. The proximal end of the supporting rib 215 is connected to the distal bottom of the supporting position 214, and the distal end of the supporting rib 215 is connected to the distal end of the first functional position 211. This improves the strength of the first functional position 211.

[0075] Furthermore, such as Figure 3 As shown, in this embodiment, the support rib 215 is a triangular piece. The first corner of the support rib 215 is used to fill the angle between the first functional position 211 and the support position 214, and connects with the first functional position 211 and the support position 214. The second corner of the support rib 215 is connected to the bottom of the far end of the support position 214. The third corner of the support rib 215 is connected to the far end of the first functional position 211.

[0076] To accommodate the aforementioned firing plate 2, in this embodiment, the first clamp arm 12 includes a first clamp arm body and a first slot 15. The distal end of the first clamp arm body has a first closing clamp portion 141, a first connecting portion 142, and a first receiving portion 143, arranged from proximal to distal. The distal end of the first closing clamp portion 141 is connected to the proximal end of the first connecting portion 142, and the distal end of the first connecting portion 142 is connected to the proximal end of the first receiving portion 143. The first receiving portion 143 is located at the distal end of the first clamp arm 12. The second clamp arm 13 includes a second clamp arm body and a second slot 17. The distal end of the second clamp arm body has a second closing clamp portion 161, a second connecting portion 162, and a second receiving portion 163, arranged from proximal to distal. The distal end of the second closing clamp portion 161 is connected to the proximal end of the second connecting portion 162, and the distal end of the second connecting portion 162 is connected to the proximal end of the second receiving portion 163. The second receiving portion 163 is located at the distal end of the second clamp arm 13. The first clamping portion 143 is used to accommodate the first clamping arm of the hemostatic clamp, and the second clamping portion 163 is used to accommodate the second clamping arm of the hemostatic clamp; during the process of the firing plate 2 closing the clamp, the first side wall 22 of the firing plate 2 squeezes the first clamping portion 141 to move the first clamping arm 12 toward the second clamping arm 13, and the second side wall 23 of the firing plate 2 squeezes the second clamping portion 161 to move the second clamping arm 13 toward the first clamping arm 12.

[0077] Preferably, when the firing pin 2 is in the distal termination position, the first actuating position 211 is located proximal to the first clamping portion 143 and the second clamping portion 163, and directly below the first connecting portion 142 and the second connecting portion 162. This prevents the first actuating position 211 from extending directly below the first clamping portion 143 and the second clamping portion 163 during the firing pin 2's operation, thus avoiding the blood vessel to be clamped within the jaws being pushed outwards. In other words, it prevents the supporting base plate 21 from acting too close to the farthest end of the clamp, causing the supporting base plate 21 to push the blood vessel to be clamped outwards during the closing of the clamp by the firing pin 2, resulting in the hemostatic clamp failing to completely clamp the blood vessel.

[0078] Furthermore, in this embodiment, the supporting base plate 21 has an upward-facing blocking member 24, and the clamp fixing plate 11 has a waist-shaped hole 111 extending in the proximal direction for the blocking member 24 to extend into. The blocking member 24 is slidably connected to the waist-shaped hole 111. When the distal end of the blocking member 24 contacts the distal end of the waist-shaped hole 111, the first action position 211 is located near the first receiving portion 143 and the second receiving portion 163, and the first action position 211 is located directly below the first connecting portion 142 and the second connecting portion 162. The cooperation between the blocking member 24 and the waist-shaped hole 111 constrains the proximal initial position and the distal termination position of the firing piece 2, ensuring that the proximal initial position of the firing piece 2 cannot be closer than the position where the proximal end of the blocking member 24 contacts the proximal end of the waist-shaped hole 111, and the distal termination position of the firing piece 2 cannot be further than the position where the distal end of the blocking member 24 contacts the distal end of the waist-shaped hole 111.

[0079] It should be noted that when the firing plate 2 is in the distal termination position, the distal end of the first action position 211 should be as close as possible to the farthest end of the first connecting part 142 and the farthest end of the second connecting part 162. In this way, the first action position 211 does not interfere with the blood vessel to be clamped, while the position of the first action position 211 acting on the first slot 15 and the second slot 17 is as close as possible to the farthest end of the clamp, so that the first action position 211 applies a better constraint to the first clamp arm 12 and the second clamp arm 13 by acting on the first slot 15 and the second slot 17.

[0080] Preferably, such as Figure 3 and Figure 5 As shown, the bottom of the first connecting part 142 is provided with a downward first connecting wall 151, and the bottom end of the first connecting wall 151 has a first base plate 152 bent toward the second clamp arm 13, and a first slot 15 is formed between the first base plate 152 and the first clamp arm body; the bottom of the second connecting part 162 is provided with a downward second connecting wall 171, and the bottom end of the second connecting wall 171 has a second base plate 172 bent toward the first clamp arm 12, and a second slot 17 is formed between the second base plate 172 and the second clamp arm body. The first slot 15 is formed by setting a first connecting wall 151 between the first connecting part 142 and the first base plate 152, which ensures the strength of the first slot 15 while avoiding the need to set a connecting wall between the first clamping part 141 and the first base plate 152 to form the first slot 15; similarly, the second slot 17 is formed by setting a second connecting wall 171 between the second connecting part 162 and the second base plate 172, which ensures the strength of the first slot 15 while avoiding the need to set a connecting wall between the second clamping part 161 and the second base plate 172 to form the second slot 17; in this way, it is convenient for the firing plate 2 to cooperate with the first slot 15 and the second slot 17, and avoids the firing plate 2 moving far away during the closing clamping process, and the connection between the side wall (first side wall 22 and second side wall 23) and the supporting base plate 21 and the connecting wall interferes.

[0081] Preferably, such as Figure 5 As shown, the cantilever end of the first base plate 152 has a first distal portion 153 and a first proximal portion 154, with the first distal portion 153 offset to the left relative to the first proximal portion 154; the cantilever end of the second base plate 172 has a second distal portion 173 and a second proximal portion 174, with the second distal portion 173 offset to the right relative to the second proximal portion 174. This reduces the cantilever amount of the first base plate 152 and the second base plate 172, thereby enhancing the strength of the first slot 15 and the second slot 17.

[0082] It should be noted that, in this embodiment, depending on the different lengths of the first action position 211 in the near and far directions, the position of the first action position 211 acting on the first slot 15 and the second slot 17 can be located at the first closing clamp 141 and the second closing clamp 161. Therefore, the first base plate 152 can extend closer to directly below the first closing clamp 141, and similarly, the second base plate 172 can extend closer to directly below the second closing clamp 161.

[0083] Preferably, such as Figure 4 and Figure 7 As shown, the top of the first sidewall 22 of the firing plate 2 is provided with a first clamping plate 221 that bends towards the second sidewall 23 relative to the first sidewall 22, and the top of the second sidewall 23 of the firing plate 2 is provided with a second clamping plate 231 that bends towards the first sidewall 22 relative to the second sidewall 23. The first clamping arm 12 is located between the first clamping plate 221 and the supporting base plate 21, and the second clamping arm 13 is located between the second clamping plate 231 and the supporting base plate 21. In this way, by providing the first clamping plate 221, it can work with the supporting base plate 21 to limit the upper and lower movement of the first clamping arm 12, and by providing the second clamping plate 231, it can work with the supporting base plate 21 to limit the upper and lower movement of the second clamping arm 13, reducing the possibility of relative misalignment between the first clamping arm 12 and the second clamping arm 13.

[0084] Preferably, the firing plate 2 further includes a limiting top plate 25. The left side of the limiting top plate 25 is fixedly connected to the top end of the first sidewall 22, and the right side of the limiting top plate 25 is fixedly connected to the top end of the second sidewall 23. The first clamp arm 12 and the second clamp arm 13 are both located between the limiting top plate 25 and the supporting base plate 21. In this way, by setting the limiting top plate 25, it can work with the supporting base plate 21 to simultaneously limit the upper and lower positions of the first clamp arm 12 and the second clamp arm 13. Furthermore, the limiting top plate 25 provides a closed connection between the first clamp arm 12 and the second clamp arm 13, further ensuring that there is no relative misalignment between the first clamp arm 12 and the second clamp arm 13.

[0085] More preferably, the left side of the limiting top plate 25 has a first recess 251 with its opening facing left, and the right side of the limiting top plate 25 has a second recess 252 with its opening facing right; the first clamping plate 221 has a first clip 222 with its head extending to the right, and the second clamping plate 231 has a second clip 232 with its head extending to the left; the first clip 222 is inserted into the first recess 251 with an interference fit, and the second clip 232 is inserted into the second recess 252 with an interference fit. This facilitates the manufacture of the firing plate 2 and the installation of the firing plate 2 and the clamping plates.

[0086] More preferably, the top of the first clamp arm 12 has a third slot 144, and the top of the second clamp arm 13 has a fourth slot 164. Both the third slot 144 and the fourth slot 164 extend in the proximal direction. During the closing of the clamp by the firing piece 2, the distal end of the limiting top plate 25 can be inserted into the third slot 144 and the fourth slot 164 from proximal to distal. After the limiting top plate 25 is inserted into the third slot 144 and the fourth slot 164, the firing piece 2 continues to move distally, and the limiting top plate 25 can move distally along the third slot 144 and the fourth slot 164. The third slot 144 can move along the limiting top plate 25 towards the fourth slot 164, and the fourth slot 164 can move along the limiting top plate 25 towards the third slot 144, until the jaws are completely closed. By setting the third slot 144 and the fourth slot 164 to cooperate with the limiting top plate 25, the first clamp arm 12 and the second clamp arm 13 are further constrained.

[0087] Furthermore, in this embodiment, as Figure 4 , Figure 6 and Figure 7 As shown, the top of the first connecting part 142 is higher than the top of the first closing clamp part 141 in the vertical direction, and the top of the second connecting part 162 is higher than the top of the second closing clamp part 161 in the vertical direction. The top of the first connecting part 142 is provided with a third slot 144, and the top of the second connecting part 162 is provided with a fourth slot 164. The limiting top plate 25 has a second action position 253 that extends distally from the first side wall 22 and the second side wall 23. During the closing of the clamp by the firing plate 2, the distal end of the second action position 253 can be inserted into the third slot 144 and the fourth slot 164 from near to far, and move distally along the third slot 144 and the fourth slot 164.

[0088] The clamp closing assembly proposed in this invention is suitable for both single-shot clamp applicators and continuous-shot clamp applicators.

[0089] Example 2

[0090] The main difference between this embodiment and Embodiment 1 is:

[0091] The distal middle of the first action position 211 has a notch with an opening facing the distance. The notch is provided to accommodate the blood vessel to be clamped, so that during the operation of the firing piece 2, the first action position 211 can extend to a certain extent directly below the first clamping portion 143 and the second clamping portion 163, without pushing the blood vessel to be clamped out of the clamping jaws. This makes the position of the first action position 211 acting on the first slot 15 and the second slot 17 closer to the farthest end of the clamp, so that the constraint applied by the first action position 211 to the first clamping arm 12 and the second clamping arm 13 by acting on the first slot 15 and the second slot 17 is better.

[0092] Correspondingly, when the firing tip 2 is in the distal termination position, the proximal end of the notch is located near the first clamping portion 143 and the second clamping portion 163. This prevents the notch from pushing the vessel to be clamped outwards from the jaws during the firing tip 2's operation, and avoids the support base plate 21 acting too close to the distal end of the clamp, preventing the support base plate 21 from pushing the vessel to be clamped outwards from the jaws during the clamping process of the firing tip 2, thus preventing the hemostatic clamp from completely clamping the vessel.

[0093] Correspondingly, when the firing plate 2 is in the distal termination position, the proximal end of the first action position 211 is as close as possible to the farthest end of the first connecting portion 142 and the farthest end of the second connecting portion 162.

[0094] It should be noted that, in this embodiment, due to the setting of the notch, the position of the first action position 211 acting on the first slot 15 and the second slot 17 can be located at the first receiving portion 143 and the second receiving portion 163. Therefore, the first base plate 152 can extend far to the direct below the first receiving portion 143, and similarly, the second base plate 172 can extend far to the direct below the second receiving portion 163.

[0095] Preferably, the bottom of the first clamping portion 143 is provided with a downward-facing third connecting wall, the bottom end of which is connected to the portion of the first base plate 152 located directly below the first clamping portion 143, and the first base plate 152 is bent toward the second clamping arm 13 relative to the third connecting wall; the bottom of the second clamping portion 163 is provided with a downward-facing fourth connecting wall, the bottom end of which is connected to the portion of the second base plate 172 located directly below the second clamping portion 163, and the second base plate 172 is bent toward the first clamping arm 12 relative to the fourth connecting wall. This strengthens the first slot 15 extending directly below the first clamping portion 143 and strengthens the second slot 17 extending directly below the second clamping portion 163.

[0096] The remaining similarities to those in Example 1 will not be repeated here.

[0097] Example 3

[0098] The main difference between this embodiment and Embodiment 1 is that:

[0099] The bottom of the first clamping portion 143 is provided with a downward first connecting wall 151, and the bottom end of the first connecting wall 151 has a first base plate 152 bent toward the second clamping arm 13, and a first slot 15 is formed between the first base plate 152 and the body of the first clamping arm; the bottom of the second clamping portion 163 is provided with a downward second connecting wall 171, and the bottom end of the second connecting wall 171 has a second base plate 172 bent toward the first clamping arm 12, and a second slot 17 is formed between the second base plate 172 and the body of the second clamping arm. The first slot 15 is formed by providing a first connecting wall 151 only between the first clamping part 143 and the first base plate 152, which ensures the strength of the first slot 15 while avoiding the need to provide a connecting wall between the first closing clamping part 141 and the first base plate 152 to form the first slot 15. Similarly, the second slot 17 is formed by providing a second connecting wall 171 only between the second clamping part 163 and the second base plate 172, which ensures the strength of the first slot 15 while avoiding the need to provide a connecting wall between the second closing clamping part 161 and the second base plate 172 to form the second slot 17. In this way, it is convenient for the firing plate 2 to cooperate with the first slot 15 and the second slot 17, and to avoid the firing plate 2 moving far away during the closing clamping process, and the connection between the side wall (first side wall 22 and second side wall 23) and the supporting base plate 21 and the connecting wall interfere with each other.

[0100] The remaining similarities to those in Example 1 will not be repeated here.

[0101] Example 4

[0102] The main difference between this embodiment and Embodiment 1 is that:

[0103] The bottom of the first clamping portion 143 is provided with a downward-facing third connecting wall. The bottom end of the third connecting wall is connected to the portion of the first base plate 152 located directly below the first clamping portion 143. The first base plate 152 is bent towards the second clamping arm 13 relative to the third connecting wall. The bottom of the second clamping portion 163 is provided with a downward-facing fourth connecting wall. The bottom end of the fourth connecting wall is connected to the portion of the second base plate 172 located directly below the second clamping portion 163. The second base plate 172 is bent towards the first clamping arm 12 relative to the fourth connecting wall. In this way, the strength of the first slot 15 and the second slot 17 is further enhanced by the third and fourth connecting walls.

[0104] The remaining similarities to those in Example 1 will not be repeated here.

[0105] It should be understood that the above description of specific embodiments of the present invention is only for illustrating the technical approach and features of the present invention, and is intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. However, the present invention is not limited to the specific embodiments described above. All changes or modifications made within the scope of the claims of the present invention should be covered within the protection scope of the present invention.

Claims

1. A clamp closing assembly, characterized in that, Includes clamps (1) and a firing plate (2) for closing the clamps; The clamp (1) includes a clamp fixing plate (11), the distal end of which has a first clamp arm (12) and a second clamp arm (13) for forming a jaw with an opening facing the distance; the distal end of the firing plate (2) has a support base plate (21) located below the clamp. The first clamp arm (12) has a first slot (15) at its bottom, and the second clamp arm (13) has a second slot (17) at its bottom. Both the first slot (15) and the second slot (17) extend in the near-far direction. An upward first sidewall (22) and an upward second sidewall (23) are respectively provided on the left and right sides of the support base plate (21), and the first clamp arm (12) and the second clamp arm (13) are located between the first sidewall (22) and the second sidewall (23); During the closing of the clamping jaws, the firing pin (2) moves further away, the first sidewall (22) squeezes the first clamp arm (12) to move towards the second clamp arm (13), and the second sidewall (23) squeezes the second clamp arm (13) to move towards the first clamp arm (12) until the jaws are completely closed. During this process, the far left side of the support base plate (21) is always inserted into the first slot (15) from right to left and moves further away along the first slot (15), and the far right side of the support base plate (21) is always inserted into the second slot (17) from left to right and moves further away along the second slot (17).

2. The clamp closing assembly according to claim 1, characterized in that, The firing plate (2) is movable between a proximal initial position and a distal termination position arranged from near to far; As the firing plate (2) moves from the proximal initial position to the distal termination position, the distal left side of the support base plate (21) is always inserted into the first slot (15) from right to left and moves further away along the first slot (15), and the distal right side of the support base plate (21) is always inserted into the second slot (17) from left to right and moves further away along the second slot (17).

3. The clamp closing assembly according to claim 1, characterized in that, The supporting base plate (21) has a first working position (211) extending distally from the first sidewall (22) and the second sidewall (23); During the closing clamping process of the firing plate, the left distal end of the first action position (211) is always inserted into the first slot (15) from right to left and moves further away along the first slot (15), and the right distal end of the first action position (211) is always inserted into the second slot (17) from left to right and moves further away along the second slot (17).

4. The clamp closing assembly according to claim 3, characterized in that, The left distal end of the first functional position (211) has a first protrusion (212) extending to the left, and the right distal end of the first functional position (211) has a second protrusion (213) extending to the right. During the closing clamping process of the firing plate, the first boss (212) is always inserted into the first slot (15) from right to left and moves further away along the first slot (15), and the second boss (213) is always inserted into the second slot (17) from left to right and moves further away along the second slot (17).

5. The clamp closing assembly according to claim 1, characterized in that, The firing plate (2) is movable between a proximal initial position and a distal termination position arranged from near to far; The first clamp arm (12) includes a first clamp arm body and a first slot (15). The distal end of the first clamp arm body has a first closing clamp portion (141), a first connecting portion (142), and a first receiving portion (143) connected in sequence from near to far. The second clamp arm (13) includes a second clamp arm body and a second slot (17). The distal end of the second clamp arm body has a second closing clamp portion (161), a second connecting portion (162), and a second receiving portion (163) connected in sequence from near to far. When the firing plate (2) is in the distal termination position, the support base plate (21) is located near the first receiving portion (143) and the second receiving portion (163).

6. The clamp closing assembly according to claim 1, characterized in that, The first clamp arm (12) includes a first clamp arm body and a first slot (15). The distal end of the first clamp arm body has a first closing clamp portion (141), a first connecting portion (142), and a first receiving portion (143) connected in sequence from near to far. The second clamp arm (13) includes a second clamp arm body and a second slot (17). The distal end of the second clamp arm body has a second closing clamp portion (161), a second connecting portion (162), and a second receiving portion (163) connected in sequence from near to far. The bottom of the first connecting part (142) is provided with a downward first connecting wall (151), and the bottom end of the first connecting wall (151) has a first base plate (152) bent toward the second clamp arm (13), and the first slot (15) is formed between the first base plate (152) and the body of the first clamp arm (12). The bottom of the second connecting part (162) is provided with a downward second connecting wall (171), and the bottom end of the second connecting wall (171) has a second base plate (172) bent toward the first clamp arm (12), and the second slot (17) is formed between the second base plate (172) and the body of the second clamp arm (13).

7. The clamp closing assembly according to claim 6, characterized in that, The cantilever end of the first base plate (152) has a first distal portion (153) and a first proximal portion (154), wherein the first distal portion (153) is offset to the left relative to the first proximal portion (154); The cantilever end of the second base plate (172) has a second distal portion (173) and a second proximal portion (174), the second distal portion (173) being offset to the right relative to the second proximal portion (174).

8. The clamp closing assembly according to claim 1, characterized in that, The firing plate (2) also includes a limiting top plate (25), the left side of which is fixedly connected to the top end of the first side wall (22), and the right side of which is fixedly connected to the top end of the second side wall (23). The first clamp arm (12) and the second clamp arm (13) are both located between the limiting top plate (25) and the supporting base plate (21).

9. The clamp closing assembly according to claim 8, characterized in that, The first clamp arm (12) has a third slot (144) at its top, and the second clamp arm (13) has a fourth slot (164) at its top. Both the third slot (144) and the fourth slot (164) extend in the proximal direction. During the closing clamping process of the firing plate, the distal end of the limiting top plate (25) can be inserted from near to far into the third slot (144) and the fourth slot (164); After the limiting top plate (25) is inserted into the third slot (144) and the fourth slot (164), the firing plate (2) continues to move further away. The limiting top plate (25) can move further away along the third slot (144) and the fourth slot (164). The third slot (144) can move along the limiting top plate (25) towards the fourth slot (164). The fourth slot (164) can move along the limiting top plate (25) towards the third slot (144) until the jaws are completely closed.

10. A clamp applicator, characterized in that, It has a clamp closing assembly as described in any one of claims 1 to 9.

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