A push clip and clip pocket device

Abstract

The application provides a pushing and clamping device, wherein the pushing and clamping device comprises a pushing and clamping piece, a clamping bin and a pushing and clamping mechanism, the pushing and clamping piece comprises a pushing part for abutting with a closed tail of a ligature clamp to be inserted into a forceps, the pushing part comprises a mounting plate, a first pushing rod and a second pushing rod, a first end of the first pushing rod is hinged to the mounting plate, a first end of the second pushing rod is hinged to the mounting plate, a second end of the first pushing rod and a second end of the second pushing rod are both distally extended from the mounting plate, and a V-shaped opening is formed between the second end of the first pushing rod and the second end of the second pushing rod, and the first pushing rod and the second pushing rod have an acting force for promoting the V-shaped opening to have an increasing trend. The stability of the pushing and clamping piece head part for the ligature clamp closed tail to be righted and the stability of the ligature clamp to be sent are improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a push clip and clamping device. 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, a clamping device is used to ligate and close the wound to stop the bleeding.

[0003] To improve surgical efficiency, a clip applicator capable of continuous clip delivery has been developed. This continuous clip applicator stores multiple ligation clips in its clip chamber. After the applicator fires one ligation clip and closes the clip, it can immediately deliver the next ligation clip to the jaws for the next firing, thus enabling continuous firing of ligation clips by the applicator.

[0004] Continuous clip applicators include polymer ligation clip applicators. Currently, the polymer ligation clips used in polymer ligation clip applicators have the following structure: Figure 1 As shown, the polymer ligation clip generally includes a first clamping arm 11 and a second clamping arm 12 connected to each other. One end of the two clamping arms is connected to form the closed tail of the ligation clip, and the other end is a free end. The free ends of the two clamping arms are far apart from each other, forming a V-shaped opening. The first clamping arm 11 is an arc shape protruding outward from the V-shaped opening, and the second clamping arm 12 is an arc shape protruding inward from the V-shaped opening. The free end of the first clamping arm 11 forms a locking hook 111 that bends inward from the V-shaped opening, and the free end of the second clamping arm 12 forms a hook groove 121 that matches the locking hook 111. To facilitate the clamping of the ligation clip by the clamping jaws, two first clamping posts 21 are provided on the first clamping arm 11 near the locking hook 111 (i.e., near the free end). The height direction of the first clamping posts 21 is perpendicular to the side plane of the ligation clip. The two first clamping posts 21 are symmetrically located on both sides of the first clamping arm 11. Two second clamping posts 22 are provided on the second clamping arm 12 near the hook groove 121 (i.e., near the free end). The height direction of the second clamping posts 22 is perpendicular to the side plane of the ligation clip. The two second clamping posts 22 are symmetrically located on both sides of the second clamping arm 12.

[0005] The current structure of the clamping device of polymer ligation clip applicators is as follows: Figures 2 to 4As shown, the clamping device includes a clamping chamber 3 for accommodating multiple ligation clips and a pusher clip 4 for pushing the ligation clips. The multiple ligation clips include a ligation clip 3 (the clip to be inserted into the clamp jaws) located at the farthest end, and ligation clips arranged and stored near the ligation clip 3. The multiple ligation clips are placed flat on the bottom plate 31 of the clamping chamber with their openings facing the clamping direction. The first clamping arm 11 of the ligation clip is attached to the first side wall of the clamping chamber 3, and the second clamping arm 12 of the ligation clip is attached to the second side wall of the clamping chamber 3. Multiple clips that curve upwards along the clamping direction are evenly spaced on the bottom plate 31. The first elastic locking position; the push clip 4 includes a push clip body 41 and a push clip head 42 connected in sequence. The push clip head 42 is bent to one side relative to the push clip body 41. The push clip body 41 covers the ligation clips other than the ligation clip to be inserted. The push clip head 42 extends into the clamping chamber 3 and is set close to the closed tail of the ligation clip 3 to be inserted. Multiple second elastic locking positions 411 are evenly spaced on the push clip body 41, which are inclined downward along the clamping direction.

[0006] Before the clamping device delivers the clamps, the first elastic locking position of the clamping clamp 3 is closer to the far end of the clamping chamber 3 than the farthest first elastic locking position. The clamping posts of the clamping clamps other than the clamping clamp 3 are located between two adjacent first elastic locking positions, and the second elastic locking position 411 is located between the clamping posts of adjacent clamping clamps other than the clamping clamp 3. When the clamping device delivers the clamps, the push clamp 4 moves towards the far end of the clamping chamber, and the raised part of the second elastic locking position 411 gradually abuts against the first clamping post 21 and / or the second clamping post 22 of all clamping clamps other than the clamping clamp 3. At the same time, the head 42 of the push clamp abuts against the closed tail of the clamping clamp 3. As the push clip 4 continues to advance towards the distal end of the clamping chamber 3, it pushes all the ligation clips towards the distal end of the clamping chamber 3 until the ligation clip 3 to be inserted enters the jaws. At this point, the push clip 4 stops advancing towards the distal end of the clamping chamber 3. During this process, all the ligation clips except the ligation clip 3 to be inserted will pass over their adjacent first elastic locking position on the distal side. Then, the push clip 4 advances towards the proximal end of the clamping chamber 3. The push clip head 42 and the second elastic locking plate 411 will drive all the ligation clips except the ligation clip 3 to advance towards the proximal end of the clamping chamber 3. When all the ligation clips except the ligation clip 3 to be inserted contact the first elastic locking position, the first elastic locking position will prevent all the ligation clips except the ligation clip 3 to continue advancing towards the proximal end of the clamping chamber 3. Because the push clip head 42 and the second elastic plate 411 are elastic, the push clip head 42 and the second elastic plate 411 will pass over their adjacent ligation clips on the proximal side. After that, the push clip 4 stops advancing towards the proximal end of the clamping chamber 3. The pusher clip 4 moves back and forth, sequentially delivering the ligation clips to the jaws.

[0007] The aforementioned polymer ligation clip applicator often experiences problems such as mechanism jamming and clip delivery failure during actual use, ultimately leading to prolonged operation time and delayed hemostasis. The applicant's research has identified the main factors causing mechanism jamming and clip delivery failure as follows: 1. Because the two clamping arms of the ligation clip are arc-shaped protrusions in the same direction, such as... Figure 2 As shown, the closed tail of the ligation clips (including the ligation clips to be inserted) stored in the clamping chamber is often biased towards one side wall of the clamping chamber. The distal end of the pusher head is often designed as a V-shaped end to straighten the closed tail of the ligation clip biased to one side to the middle of the clamping chamber in the left-right direction before clamping. The larger the size of the V-shaped end in the left-right direction, the more conducive it is to straightening the closed tail of the ligation clip. However, because the pusher head needs to pass through the space between the first and second clamping posts of its adjacent ligation clip during the reset process, the size of the V-shaped end in the left-right direction must not be greater than the distance between the first and second clamping posts of the ligation clip in the clamping chamber (i.e., the size design of the V-shaped end in the left-right direction is greatly restricted), the pusher head is prone to errors in straightening the closed tail of the ligation clip, which can cause the mechanism to jam and clamping to fail. 2. The pusher clip head (V-shaped end) abuts against the closed tail of the clamp to be inserted, thus delivering the clamp to the jaws. The lateral dimension design of the V-shaped end is limited, resulting in a small abutment area between the pusher clip head and the closed tail of the clamp to be inserted, leading to unstable abutment. During the delivery of the clamp to the jaws, the wobbling and swaying of the clamp can easily cause the closed tail of the clamp to detach from the abutment of the V-shaped end, resulting in unstable clamp delivery by the pusher clip, which in turn causes the mechanism to jam and the clamp delivery to fail.

[0008] Therefore, there is an urgent need for an improved pusher and clamping device. Summary of the Invention

[0009] (a) Technical problems to be solved

[0010] In view of the problems existing in the above-mentioned technologies, the present invention provides solutions to at least some extent. To this end, the present invention proposes a push clip that improves the alignment stability of the push clip head relative to the closing tail of the ligation clip and the clip delivery stability.

[0011] The present invention also proposes a clamping device having the above-mentioned push clamp plate.

[0012] (II) Technical Solution

[0013] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0014] On one hand, the present invention provides a push clip, including a pushing part for pushing the clamp to be inserted by abutting against the closed tail of the clamp to be inserted; the pushing part includes a mounting plate, a first pushing rod and a second pushing rod, a first end of the first pushing rod is hinged to the mounting plate, a first end of the second pushing rod is hinged to the mounting plate, the second ends of the first pushing rod and the second pushing rod both extend far out of the mounting plate, and a V-shaped opening is formed between the second ends of the first pushing rod and the second pushing rod, and there is a force between the first pushing rod and the second pushing rod that tends to increase the size of the V-shaped opening.

[0015] Optionally, a first magnet is provided at the second end of the first push rod, and a second magnet is provided at the second end of the second push rod. The repulsion between the first magnet and the second magnet causes the V-shaped opening to tend to increase.

[0016] Optionally, the first end of the first push rod and the first end of the second push rod are hinged to the same position on the mounting plate via the same pin.

[0017] Optionally, the first push rod is located above the mounting plate, and the second push rod is located below the mounting plate. A first magnet is fixedly connected to the lower surface of the second end of the first push rod, and a second magnet is fixedly connected to the upper surface of the second end of the second push rod.

[0018] Optionally, the push clip also includes a pre-compressed elastic element, which connects the first end of the first push rod and the first end of the second push rod on the mounting plate. The elastic restoring force generated by the pre-compressed elastic element causes the V-shaped opening to tend to increase.

[0019] Optionally, the first end of the first push rod and the first end of the second push rod are hinged to two positions arranged in the left-right direction on the mounting plate, and the first push rod and the second push rod are located on the same plane.

[0020] Optionally, the second ends of the first push rod and the second push rod, forming a V-shape, are arranged sequentially from left to right; a first limiting part is provided on the left side of the mounting plate, and a second limiting part is provided on the right side of the mounting plate; when the second end of the first push rod rotates to the left and abuts against the first limiting part, the first limiting part prevents the second end of the first push rod from continuing to rotate to the left, and when the second end of the second push rod rotates to the right and abuts against the second limiting part, the second limiting part prevents the second end of the second push rod from continuing to rotate to the right.

[0021] On the other hand, the present invention provides a clamping device having a pusher clamp as described above.

[0022] Optionally, the clamping device also includes a clamping chamber for accommodating multiple ligation clips; at least one clamping boss is provided in the middle of the left and right direction of the clamping chamber bottom plate, and during the process of the clamping clip being delivered to the clamping jaws, the top of the clamping boss always supports the closed tail of the clamping clip to be inserted, so that the closed tail of the clamping clip to be inserted is parallel to the clamping chamber bottom plate; the pushing part of the clamping pusher is arranged parallel to the clamping chamber bottom plate.

[0023] Optionally, a boss extending from the proximal end to the distal end of the clamping chamber is provided in the middle of the left-right direction of the clamping chamber bottom plate. The distal end of the boss is used as an insertion boss. During the clamping process, the top of the proximal end of the boss supports the closed tail of the ligation clamp near the clamp to be inserted, so that the closed tail of the ligation clamp near the clamp to be inserted is parallel to the clamping chamber bottom plate.

[0024] (III) Beneficial Effects

[0025] The beneficial effects of this invention are:

[0026] The push clip provided by this invention is placed in the clamping chamber. The force between the first push rod and the second push rod causes the V-shaped opening to tend to increase. The first sidewall and the second sidewall of the clamping chamber limit the increase of the V-shaped opening, thereby forming a stable V-shaped opening between the second end of the first push rod and the second end of the second push rod. This stable V-shaped opening is used to hold the closed tail of the clamp to be inserted and deliver the clamp to the jaws. The V-shaped opening has a large size in the left and right direction, and the clamp delivery is stable. During the repositioning process, the push clip moves towards the proximal end of the clamping chamber until the first clamping post of its adjacent ligation clip abuts against the first push rod, and the second clamping post of its adjacent ligation clip abuts against the second push rod. The push clip continues to move towards the proximal end of the clamping chamber. The first clamping post squeezes the second end of the first push rod, overcoming the force between the first and second push rods, and rotates towards the first push rod. The second clamping post squeezes the second end of the second push rod, overcoming the force between the first and second push rods, and rotates towards the second push rod until the V-shaped opening passes through the space between the first and second clamping posts of its adjacent ligation clip and passes over its adjacent ligation clip. Thus, the V-shaped end of the push clip provided by this invention can have a lateral dimension greater than the distance between the first and second clamping posts of the ligation clips in the clamping chamber, and the push clip can be repositioned smoothly, thereby improving the alignment stability of the push clip head relative to the closed tail of the ligation clip and the clip delivery stability. Attached Figure Description

[0027] The present invention is described with reference to the following figures:

[0028] Figure 1 This is a schematic diagram of the structure of the ligation clip according to the background art of the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of a clamping chamber containing a ligation clip according to the background art of the present invention;

[0030] Figure 3 This is a schematic diagram of the mating structure between the pusher clip and the clamping chamber according to the background technology of the present invention;

[0031] Figure 4 for Figure 3 Enlarged schematic diagram of the far end of the middle compartment;

[0032] Figure 5 This is a schematic diagram of the overall structure of the clamping device according to Embodiment 3 of the present invention;

[0033] Figure 6 for Figure 5 Enlarged schematic diagram of the far end of the middle clamping unit;

[0034] Figure 7 This is a cross-sectional schematic diagram of the clamping device according to Embodiment 3 of the present invention from a first perspective;

[0035] Figure 8 for Figure 7 Enlarged schematic diagram of the far end of the middle clamping unit;

[0036] Figure 9 This is a cross-sectional schematic diagram of the clamping device according to Embodiment 3 of the present invention from a second perspective;

[0037] Figure 10 for Figure 9 Enlarged schematic diagram of the far end of the middle clamping device.

[0038] [Explanation of Labels in the Attached Image]

[0039] 11: First clamping arm; 12: Second clamping arm; 13: Ligating clamp to be inserted;

[0040] 111: Locking hook;

[0041] 121: Hook groove;

[0042] 21: First clamping post; 22: Second clamping post;

[0043] 3: Mid-section;

[0044] 31: Compartment bottom plate;

[0045] 312: Boss;

[0046] 4: Push the clip;

[0047] 41: Push clip body; 42: Push clip head;

[0048] 411: Second flexible slot;

[0049] 421: Pushing part; 422: Mounting plate; 423: First push rod; 424: Second push rod; 425: First limiting part; 426: Pin. Detailed Implementation

[0050] It should be noted that in this article, "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 in this article are... Figure 2 Using the orientation as a reference, the direction from front to back is also the direction from far to near.

[0051] Example 1

[0052] like Figure 6 , Figure 8 and Figure 10 As shown, this embodiment provides a push clip 4. The push clip 4 includes a push clip body 41 connected in sequence and a push clip head 42 for pushing the clamp ligation clip 13 to be inserted. The push clip head 42 has a bent portion and a pushing portion 421 arranged in sequence from near to far. The bent portion connects the push clip body 41 and the pushing portion 421, so that the pushing portion 421 is located on one side of the push clip body 41. The pushing portion 421 is used to abut against the closed tail of the clamp ligation clip 13 to push the clamp ligation clip 13 to be inserted. The pushing portion 421 includes a mounting plate 422, a first pushing rod 423 and a second pushing rod. 424, the first end of the first push rod 423 is hinged to the mounting plate 422, the first end of the second push rod 424 is hinged to the mounting plate 422, the second end of the first push rod 423 is provided with a first magnet, and the second end of the second push rod 424 is provided with a second magnet; the second ends of the first push rod 423 and the second ends of the second push rod 424 can both rotate to extend outward from the mounting plate 422, and a V-shaped opening is formed between the second ends of the first push rod 423 and the second ends of the second push rod 424, and the first magnet and the second magnet repel each other.

[0053] When using the push clamp 4 configured above, firstly, the second ends of the first push rod 423 and the second ends of the second push rod 424 are rotated to extend further out of the mounting plate 422, forming a V-shaped opening between the second ends of the first push rod 423 and the second ends of the second push rod 424. The first magnet and the second magnet repel each other, and then it is placed in the clamping chamber 3. The push clamp 4 placed in the clamping chamber 3 causes the repulsive force between the first magnet and the second magnet to increase the size of the V-shaped opening formed between the second ends of the first push rod 423 and the second ends of the second push rod 424. The first and second sidewalls of the clamping chamber 3 limit the increase of the V-shaped opening, thus forming a stable V-shaped opening between the second ends of the first push rod 423 and the second ends of the second push rod 424. This stable V-shaped opening is used to hold the closed tail of the clamping clamp 13 to be inserted, thus sending the clamping clamp 13 to the jaws. The V-shaped opening has a large dimension in the left-right direction, ensuring stable clamping. During the repositioning process, the push clip 4 moves towards the proximal end of the clamping chamber 3 until the first clamping post 21 of its adjacent ligation clip abuts against the first push rod 423, and the second clamping post 22 of its adjacent ligation clip abuts against the second push rod 424. The push clip 4 continues to move towards the proximal end of the clamping chamber 3. The first clamping post 21 squeezes the second end of the first push rod 423 to overcome the repulsive force between the magnets and rotates towards the first push rod 423. The second clamping post 22 squeezes the second end of the second push rod 424 to overcome the repulsive force between the magnets and rotates towards the second push rod 424 until the V-shaped opening passes through the space between the first clamping post 21 and the second clamping post 22 of its adjacent ligation clip and passes over its adjacent ligation clip. Therefore, the V-shaped end of the push clip 4 provided in this embodiment can be larger in the left and right direction in the clamping chamber 3 than the distance between the first clamping post 21 and the second clamping post 22 of the ligation clamp in the clamping chamber 3, and the push clip 4 can be smoothly reset, thereby improving the alignment stability of the push clip head 42 to the closed tail of the ligation clamp and the clamp delivery stability.

[0054] Preferably, in this embodiment, the first end of the first push rod 423 and the first end of the second push rod 424 are hinged to the same position on the mounting plate 422. This allows the mounting plate 422 to be designed to be smaller in the lateral direction, facilitating its passage over adjacent ligation clips via the space between the first clamping post 21 and the second clamping post 22 of the adjacent ligation clips. More preferably, in this embodiment, the first end of the first push rod 423 and the first end of the second push rod 424 are hinged to the same position on the mounting plate 422 via the same pin 426. The pin 426 facilitates the installation of the first push rod 423 and the second push rod 424 on the mounting plate 422. Further, in this embodiment, the first push rod 423 is located above the mounting plate 422, and the second push rod 424 is located below the mounting plate 422.

[0055] Of course, it is only preferred that the first end of the first push rod 423 and the first end of the second push rod 424 are hinged at the same position on the mounting plate 422. Optionally, the first end of the first push rod 423 and the first end of the second push rod 424 are hinged at two positions on the mounting plate 422 arranged in the near-far direction, or the first end of the first push rod 423 and the first end of the second push rod 424 are hinged at two positions on the mounting plate 422 arranged in the left-right direction.

[0056] Preferably, a first magnet is fixedly connected to the lower surface of the second end of the first push rod 423, and a second magnet is fixedly connected to the upper surface of the second end of the second push rod 424. This arrangement of the first and second magnets makes the push part 421 structurally compact, with a small thickness (i.e., a small vertical dimension), while simultaneously enabling a stable repulsive force between the first and second magnets.

[0057] Preferably, the second ends of the first push rod 423 and the second push rod 424, forming a V-shape, are arranged sequentially from left to right, and the first magnet and the second magnet repel each other. A first limiting part 425 is provided on the left side of the upper surface of the mounting plate 422, and a second limiting part is provided on the right side of the lower surface of the mounting plate 422. When the second end of the first push rod 423 rotates to the left and abuts against the first limiting part 425, the first limiting part 425 prevents the second end of the first push rod 423 from continuing to rotate to the left. When the second end of the second push rod 424 rotates to the right and abuts against the second limiting part, the second limiting part prevents the second end of the second push rod 424 from continuing to rotate to the right. In this way, by setting the first limiting part 425 and the second limiting part, the size of the V-shaped opening is limited, preventing the first push rod 423 from contacting the first side wall of the clamping chamber 3 and the second push rod 424 from contacting the second side wall of the clamping chamber 3 after the push clamp 4 is placed in the clamping chamber 3, which is beneficial for the push clamp 4 to be driven.

[0058] Example 2

[0059] This embodiment provides a push clamp 4. The pushing part 421 of the push clamp 4 includes a mounting plate 422, a first pushing rod 423, a second pushing rod 424, and a pre-compressed elastic member. The first end of the first pushing rod 423 is hinged to the mounting plate 422, and the first end of the second pushing rod 424 is hinged to the mounting plate 422. The first end of the first pushing rod 423 and the first end of the second pushing rod 424 are connected on the mounting plate 422 by the pre-compressed elastic member. The second ends of the first pushing rod 423 and the second ends of the second pushing rod 424 both extend far beyond the mounting plate 422, and a V-shaped opening is formed between the second ends of the first pushing rod 423 and the second ends of the second pushing rod 424. The elastic restoring force generated by the pre-compressed elastic member causes the V-shaped opening to tend to increase.

[0060] The push clamp 4, as described above, is placed in the clamping chamber 3. The elastic restoring force generated by the pre-compressed elastic element causes the V-shaped opening formed between the second end of the first push rod 423 and the second end of the second push rod 424 to tend to increase. The first and second side walls of the clamping chamber 3 limit the increase of the V-shaped opening, thereby forming a stable V-shaped opening between the second end of the first push rod 423 and the second end of the second push rod 424. This stable V-shaped opening is used to hold the closed tail of the clamping clamp 13 to be inserted and deliver the clamping clamp 13 to the jaws. The V-shaped opening has a large size in the left and right directions, and the clamping is stable. During the repositioning process, the push clip 4 moves towards the proximal end of the clamping chamber 3 until the first clamping post 21 of its adjacent ligation clip abuts against the first push rod 423, and the second clamping post 22 of its adjacent ligation clip abuts against the second push rod 424. The push clip 4 continues to move towards the proximal end of the clamping chamber 3. The first clamping post 21 squeezes the second end of the first push rod 423 to overcome the elastic restoring force of the pre-compressed elastic element and rotates towards the first push rod 423. The second clamping post 22 squeezes the second end of the second push rod 424 to overcome the elastic restoring force of the pre-compressed elastic element and rotates towards the second push rod 424 until the V-shaped opening passes through the space between the first clamping post 21 and the second clamping post 22 of its adjacent ligation clip and passes over its adjacent ligation clip. Therefore, the V-shaped end of the push clip 4 provided in this embodiment can be larger in the left and right direction in the clamping chamber 3 than the distance between the first clamping post 21 and the second clamping post 22 of the ligation clamp in the clamping chamber 3, and the push clip 4 can be smoothly reset, thereby improving the alignment stability of the push clip head 42 to the closed tail of the ligation clamp and the clamp delivery stability.

[0061] Preferably, the first end of the first push rod 423 and the first end of the second push rod 424 are hinged at two positions on the mounting plate 422 arranged in the left-right direction, and the first push rod 423 and the second push rod 424 are located on the same plane. This facilitates the installation of the elastic element between the first end of the first push rod 423 and the first end of the second push rod 424.

[0062] Preferably, the second ends of the first push rod 423 and the second push rod 424, which form a V-shape, are arranged sequentially from left to right, with both the first push rod 423 and the second push rod 424 located above the mounting plate 422. A first limiting part 425 is provided on the left side of the upper surface of the mounting plate 422, and a second limiting part is provided on the right side of the upper surface of the mounting plate 422. When the second end of the first push rod 423 rotates to the left and abuts against the first limiting part 425, the first limiting part 425 prevents the second end of the first push rod 423 from continuing to rotate to the left. When the second end of the second push rod 424 rotates to the right and abuts against the second limiting part, the second limiting part prevents the second end of the second push rod 424 from continuing to rotate to the right. Thus, by setting the first limiting part 425 and the second limiting part, the size of the V-shaped opening is limited, preventing the first pushing rod 423 from contacting the first side wall of the clamping chamber 3 and the second pushing rod 424 from contacting the second side wall of the clamping chamber 3 after the pushing clip 4 is placed in the clamping chamber 3, which is beneficial for the pushing clip 4 to be driven.

[0063] Example 3

[0064] like Figures 5 to 10 As shown, this embodiment provides a clamping device, which includes a clamping chamber 3 for accommodating multiple ligation clips and a pusher clip 4 as described in Embodiment 1 or Embodiment 2 for pushing the ligation clips. At least one clamping boss is provided at the center of the clamping chamber base plate 31 in the left-right direction. During the process of the ligation clip 13 being delivered to the clamp jaws, the top of the clamping boss always supports the closed tail of the ligation clip 13, making the closed tail of the ligation clip 13 parallel to the clamping chamber base plate 31. The pushing portion 421 of the pusher clip 4 is arranged parallel to the clamping chamber base plate 31.

[0065] In this way, the insertion protrusion supports the closed tail of the clamp 13 to be inserted, reducing the up-and-down swing of the closed tail of the clamp during the clamping process, ensuring the stable cooperation between the pushing part 421 of the pusher 4 and the closed tail of the clamp 13, which in turn facilitates the clamping of the pusher head 42, making the clamping stable and reducing the chance of clamping jamming.

[0066] Preferably, a boss 312 extending from the proximal end to the distal end of the clamping chamber 3 is provided in the middle of the clamping chamber base plate 31 in the left-right direction. The distal end of the boss 312 serves as an insertion boss. During clamping, the top of the proximal end of the boss 312 supports the closed tail of the ligation clip proximal to the clamping clamp 13, making the closed tail of the ligation clip proximal to the clamping clamp 13 parallel to the clamping chamber base plate 31. In this way, the boss 312 not only improves the clamping stability of the clamping clamp 13, but also improves the clamping stability of the ligation clip proximal to the clamping clamp 13.

[0067] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0068] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0069] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0070] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0071] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A push clip, characterized in that, Includes a pushing part (421) for pushing the ligation clip (13) by abutting against the closed tail of the ligation clip (13). The pushing part (421) includes a mounting plate (422), a first pushing rod (423) and a second pushing rod (424). The first end of the first pushing rod (423) is hinged to the mounting plate (422), and the first end of the second pushing rod (424) is hinged to the mounting plate (422). The second ends of the first pushing rod (423) and the second ends of the second pushing rod (424) both extend far beyond the mounting plate (422), and a V-shaped opening is formed between the second ends of the first pushing rod (423) and the second pushing rod (424). There is a force between the first pushing rod (423) and the second pushing rod (424) that tends to increase the size of the V-shaped opening. The second ends of the first pushing rod (423) and the second pushing rod (424) forming the V-shape are arranged sequentially from left to right.

2. The push clamp according to claim 1, characterized in that, The second end of the first push rod (423) is provided with a first magnet, and the second end of the second push rod (424) is provided with a second magnet. The repulsion between the first magnet and the second magnet causes the V-shaped opening to tend to increase.

3. The push clamp according to claim 1 or 2, characterized in that, The first end of the first push rod (423) and the first end of the second push rod (424) are hinged to the same position on the mounting plate (422) by the same pin (426).

4. The push clamp piece according to claim 2, characterized in that, The first push rod (423) is located above the mounting plate (422), and the second push rod (424) is located below the mounting plate (422). The lower surface of the second end of the first push rod (423) is fixedly connected to a first magnet piece, and the upper surface of the second end of the second push rod (424) is fixedly connected to a second magnet piece.

5. The push clamp piece according to claim 1, characterized in that, It also includes a pre-compressed elastic element. The first end of the first push rod (423) and the first end of the second push rod (424) on the mounting plate (422) are connected by the pre-compressed elastic element. The elastic restoring force generated by the pre-compressed elastic element causes the V-shaped opening to tend to increase.

6. The push clamp piece according to claim 5, characterized in that, The first end of the first push rod (423) and the first end of the second push rod (424) are hinged to two positions on the mounting plate (422) arranged in the left-right direction, and the first push rod (423) and the second push rod (424) are located on the same plane.

7. The push clamp according to claim 2 or 5, characterized in that, A first limiting part (425) is provided on the left side of the mounting plate (422), and a second limiting part is provided on the right side of the mounting plate (422). When the second end of the first push rod (423) rotates to the left and abuts against the first limiting part (425), the first limiting part (425) prevents the second end of the first push rod (423) from continuing to rotate to the left. When the second end of the second push rod (424) rotates to the right and abuts against the second limiting part, the second limiting part prevents the second end of the second push rod (424) from continuing to rotate to the right.

8. A clamping device, characterized in that, It has a push clamp as described in any one of claims 1 to 7.

9. The clamping device according to claim 8, characterized in that, It also includes a clamping chamber (3) for accommodating multiple ligation clips; At least one clamping boss is provided in the middle of the left and right directions of the clamping chamber bottom plate (31). During the process of the clamping clamp (13) being sent to the jaws, the top of the clamping boss always supports the closed tail of the clamping clamp (13) to be clamped, so that the closed tail of the clamping clamp (13) to be clamped is parallel to the clamping chamber bottom plate (31); the pushing part (421) of the pusher is set parallel to the clamping chamber bottom plate (31).

10. The clamping device according to claim 9, characterized in that, A boss (312) extending from the proximal end of the clamping chamber (3) to the distal end of the clamping chamber (3) is provided in the middle of the left and right direction of the clamping chamber bottom plate (31). The distal end of the boss (312) is used as the clamping boss. During the clamping process, the top of the proximal end of the boss (312) supports the closed tail of the ligation clamp near the clamping clamp (13) to be clamped, so that the closed tail of the ligation clamp near the clamping clamp (13) to be clamped is parallel to the clamping chamber bottom plate (31).

Images