Ligation clip and clip cartridge device

Abstract

The application provides a ligature clip and a clip storage device, wherein a proximal part of a closed tail of the ligature clip is provided with a socket rearward for a push clip head insertion slot, and the insertion slot is located at a middle part of the closed tail in a vertical direction; the insertion slot comprises a first guide slot and a first insertion slot which are sequentially communicated from proximal to distal, the first guide slot has oppositely arranged first and second slot openings, the first guide slot is communicated with the first insertion slot through the second slot opening, the size of the first slot opening in the vertical direction is greater than the size of the second slot opening in the vertical direction, the first insertion slot has a slot bottom and oppositely arranged first and second slot walls, the first slot wall is used for abutting an upper surface of the push clip head, the second slot wall is used for abutting a lower surface of the push clip head, and the slot bottom is used for abutting the push clip head to make the clip sending more stable.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a ligation 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 13 (the clip to be inserted into the clamp jaws) located at the farthest end, and ligation clips arranged and stored near the ligation clip 13. 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 13 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 post of the clamping clamp 13 is closer to the far end of the clamping chamber 3 than the farthest first elastic locking post. The clamping posts of the clamping clamps other than the clamping clamp 13 are located between two adjacent first elastic locking posts, and the second elastic locking post 411 is located between the clamping posts of adjacent clamping clamps other than the clamping clamp 13. When the clamping device delivers the clamps, the pusher clip 4 moves towards the far end of the clamping chamber, and the raised part of the second elastic locking post 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 13. At the same time, the head of the pusher clip 42 abuts against the closed tail of the clamping clamp 13. 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 13 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 13 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 13 to advance towards the proximal end of the clamping chamber 3. When all the ligation clips except the ligation clip 13 to be inserted contact the first elastic locking position, the first elastic locking position will prevent all the ligation clips except the ligation clip 13 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 revealed that the main factors causing mechanism jamming and clip delivery failure include: 1. The push clip head is a single-piece structure. During the process of pushing the ligation clip to the jaws, the push clip head and the tail of the ligation clip are in line-surface contact, resulting in unstable support. The wobbling and swaying of the ligation clip (mostly the up-and-down swaying of the closed tail) during delivery can easily cause the closed tail of the ligation clip to disengage from the effective support position of the push clip head, or even disengage from the support of the push clip head, causing unstable clip delivery and subsequent mechanism jamming and clip delivery failure. 2. 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 in a V-shape to straighten the closed tail of the ligation clip to the middle of the clamping chamber in the left-right direction before clamping. The larger the size of the pusher head 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 pusher head 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. This makes it easy for the pusher head to make mistakes in straightening the closed tail of the ligation clip, which can cause the mechanism to jam and clamping to fail.

[0008] Therefore, there is an urgent need for an improved polymer ligation clip 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 ligation clip that makes clip delivery more stable.

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

[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 ligation clip, wherein the proximal part of the closed tail of the ligation clip is provided with a slot for inserting the clip head with the insertion port facing backward; the slot includes a first guide groove and a first insertion groove connected sequentially from proximal to distal, the first guide groove has a first groove opening and a second groove opening arranged opposite to each other, the first guide groove is connected to the first insertion groove through the second groove opening, the dimension of the first groove opening in the vertical direction is larger than the dimension of the second groove opening in the vertical direction, the first insertion groove has a groove bottom and a first groove wall and a second groove wall arranged opposite to each other, the first groove wall is used to fit the upper surface of the clip head, the second groove wall is used to fit the lower surface of the clip head, and the groove bottom is used for the clip head to abut.

[0015] Optionally, at least one slot is provided on the proximal portion of the closed tail of the ligation clip.

[0016] Optionally, the shape of the first guide groove corresponding to the closed tail is set to an arc, and the shape of the first insertion groove corresponding to the closed tail is set to an arc.

[0017] Optionally, both the first and second groove walls are planar walls parallel to the plane where the ligation clip is located; the upper edge of the first groove is connected to the upper edge of the second groove through the third groove wall, and the lower edge of the first groove is connected to the lower edge of the second groove through the fourth groove wall, wherein both the third and fourth groove walls are planar walls or curved walls.

[0018] Optionally, the ligation clip includes a first clamping arm with a locking hook and a second clamping arm with a hook groove, the connection between the first clamping arm and the second clamping arm forming a closed tail; a first protrusion is provided on the outer side of the second clamping arm, one end of the first protrusion is a connecting end for connecting with the second clamping arm, the other end of the first protrusion is a free end, the first protrusion is located from the closed tail to half of the second clamping arm; the ligation clip is housed in a clamping chamber, the free end of the first protrusion abuts against the second side wall of the clamping chamber, the first clamping arm abuts against the first side wall of the clamping chamber, and the closed tail is located in the middle of the clamping chamber in the left-right direction.

[0019] Optionally, the ligation clip is housed in the clamping chamber, with the free end of the first protrusion and the free end of the second clamping arm both abutting against the second side wall of the clamping chamber, and the middle part of the first clamping arm abutting against the first side wall of the clamping chamber.

[0020] Optionally, the slot on the closed tail is used as the first slot, which is used for inserting the right side of the push clip head; a second boss is provided on the outer side of the first clamping arm, one end of the second boss is a connecting end for connecting with the first clamping arm, and the other end of the second boss is a free end. The second boss is located from the closed tail to half of the first clamping arm. The free end of the second boss has a second slot with the insertion port facing backward. The second slot is located in the middle of the second boss in the vertical direction and is used for inserting the left side of the push clip head.

[0021] Optionally, the second slot includes a second guide groove and a second insertion groove connected sequentially from near to far. The second guide groove has a third groove and a fourth groove arranged opposite to each other. The second guide groove is connected to the second insertion groove through the fourth groove. The third groove is larger in the vertical direction than the fourth groove. The second insertion groove has a bottom and a fifth groove wall and a sixth groove wall arranged opposite to each other. The fifth groove wall is used to fit the upper surface of the push clip head, the sixth groove wall is used to fit the lower surface of the push clip head, and the bottom of the groove is used for the push clip head to abut.

[0022] Optionally, the first slot and the second slot are coplanar.

[0023] On the other hand, the present invention provides a clamping device having a ligation clamp as described above.

[0024] Optionally, the clamping device includes a clamping chamber for accommodating multiple ligation clips and a pusher for pushing the ligation clips; the clamping chamber base plate has at least one insertion boss in the middle of the left and right direction, and during the process of the ligation clip being inserted into the clamping jaws, the top of the insertion boss always supports the closed tail of the ligation clip being inserted into the clamping jaws, so that the closed tail of the ligation clip being inserted into the clamping jaws is parallel to the clamping chamber base plate; the pusher has a pusher head for pushing the ligation clip being inserted into the clamping jaws, and the pusher head is provided with a slot corresponding to the ligation clip being inserted into the clamping jaws.

[0025] (III) Beneficial Effects

[0026] The beneficial effects of this invention are:

[0027] The ligation clip provided by this invention features a slot near the closed tail of the clip. The pusher head can insert into the slot and abut against the bottom of the first insertion groove to deliver the ligation clip to the jaws. The connection between the pusher head and the closed tail of the ligation clip is stable. During the delivery of the ligation clip to the jaws, the engagement between the pusher head and the first insertion groove restricts the clip's wobbling and deflection, more effectively transmitting the pushing force to the clip and making the delivery more stable. By providing a first guide groove, since the vertical dimension of the first groove is larger than that of the second groove, it facilitates the insertion of the pusher head into the first insertion groove. Attached Figure Description

[0028] The present invention is described with reference to the following figures:

[0029] Figure 1 This is a schematic diagram of the structure of the ligation clip according to the background art of the present invention;

[0030] 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;

[0031] Figure 3This 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;

[0032] Figure 4 for Figure 3 Enlarged schematic diagram of the far end of the middle compartment;

[0033] Figure 5 This is a schematic diagram of the overall structure of the clamping device according to Embodiment 2 of the present invention;

[0034] Figure 6 for Figure 5 Enlarged schematic diagram of the far end of the middle clamping unit;

[0035] Figure 7 This is a cross-sectional schematic diagram of the clamping device according to Embodiment 2 of the present invention from a first perspective;

[0036] Figure 8 for Figure 7 Enlarged schematic diagram of the far end of the middle clamping unit;

[0037] Figure 9 This is a cross-sectional schematic diagram of the clamping device according to Embodiment 2 of the present invention from a second perspective;

[0038] Figure 10 for Figure 9 Enlarged schematic diagram of the far end of the middle clamping unit;

[0039] Figure 11 This is a schematic diagram of the structure of the clamping chamber containing the ligation clip according to Embodiment 4 of the present invention;

[0040] Figure 12 This is a schematic diagram of the cooperation structure between the push clamp and the clamping chamber according to Embodiment 4 of the present invention;

[0041] Figure 13 This is a schematic diagram of the structure of the clamping chamber containing the ligation clip according to Embodiment 6 of the present invention;

[0042] Figure 14 This is a schematic diagram of the cooperation structure between the push clamp and the clamping chamber according to Embodiment 6 of the present invention.

[0043] [Explanation of Labels in the Attached Image]

[0044] 11: First clamping arm; 12: Second clamping arm; 13: Ligating clamp to be inserted; 14: Closing tail;

[0045] 111: Locking hook; 112: Second boss;

[0046] 121: Hook groove; 122: First boss;

[0047] 141: First guide groove; 142: First insertion groove; 143: Groove bottom;

[0048] 21: First clamping post; 22: Second clamping post;

[0049] 3: Mid-section;

[0050] 31: Compartment bottom plate;

[0051] 312: Boss;

[0052] 4: Push the clip;

[0053] 41: Push clip body; 42: Push clip head;

[0054] 411: Second flexible slot;

[0055] 421: V-shaped end. Detailed Implementation

[0056] 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.

[0057] Example 1

[0058] like Figure 6 , Figure 8 and Figure 10 As shown, this embodiment provides a ligation clip. The ligation clip includes a first clamping arm 11 and a second clamping arm 12 connected to each other. The first end of the first clamping arm 11 is connected to the first end of the second clamping arm 12 to form a closed tail 14 of the ligation clip. The second ends of the first clamping arm 11 and the second ends of the second clamping arm 12 are far apart from each other to form a V-shaped opening. The second end of the first clamping arm 11 has a locking hook 111 that bends into the V-shaped opening. The second end of the second clamping arm 12 has a hook groove 121 that cooperates with the locking hook 111. The proximal portion of the closed tail 14 is provided with a slot facing backward, which is used for inserting the push clip head 42. The slot includes a first guide groove 141 and a first insertion groove 142 connected sequentially from near to far. The first guide groove 141 has a first slot and a second slot that are arranged opposite to each other. The first guide groove 141 is connected to the first insertion groove 142 through the second slot. The size of the first slot in the vertical direction is larger than that of the second slot in the vertical direction. The first insertion groove 142 has a groove bottom 143 and a first groove wall and a second groove wall that are arranged opposite to each other. The first groove wall is used to fit the upper surface of the push clip head 42, the second groove wall is used to fit the lower surface of the push clip head 42, and the groove bottom 143 is used for the push clip head 42 to abut.

[0059] Thus, by creating a slot near the closed tail 14 of the ligation clip, the pusher head 42 can insert into the slot and abut against the bottom 143 of the first insertion slot 142 to deliver the ligation clip 13 to the jaws. The insertion between the pusher head 42 and the closed tail 14 of the ligation clip 13 is stable. During the delivery of the ligation clip 13 to the jaws, the cooperation between the pusher head 42 and the first insertion slot 142 restricts the ligation clip from wobbling or deflecting, more effectively transmitting the pushing force to the ligation clip and making the delivery more stable. By providing a first guide slot 141, since the vertical dimension of the first slot is larger than that of the second slot, it is convenient for the pusher head 42 to insert into the first insertion slot 142 through the first guide slot 141.

[0060] Preferably, in this embodiment, a slot is provided on the proximal part of the closed tail 14, and the slot is located in the middle of the closed tail 14 in the vertical direction. This simplifies the structure and facilitates the engagement of the push clip head 42 with the slot. Optionally, at least two slots are provided on the proximal part of the closed tail 14.

[0061] Preferably, the first end of the first clamping arm 11 and the first end of the second clamping arm 12 are connected in an arc-shaped transition to form the closed tail 14 of the ligation clip (i.e., the closed tail 14 of the ligation clip is arc-shaped). The first guide groove 141 is arc-shaped corresponding to the shape of the closed tail 14, and the first insertion groove 142 is arc-shaped corresponding to the shape of the closed tail 14. The groove is configured in this way to cooperate with the V-shaped push clip head 42 to straighten the ligation clip. The bottom 143 of the first insertion groove 142 is also arc-shaped corresponding to the shape of the closed tail 14. Compared with the existing method of using the arc-shaped end face of the near end of the closed tail 14 to cooperate with the V-shaped end 421 of the push clip head 42 for ligation clip straightening, the cooperation of the arc-shaped groove bottom 143 with the V-shaped end 421 of the push clip head 42 is more conducive to the straightening of the ligation clip when the dimensions of the push clip head 42 are equal in the left and right directions. The straightening error rate is lower, and the clip delivery is more stable.

[0062] Preferably, in this embodiment, the slot and the V-shaped opening are not connected. Since the V-shaped opening is used to accommodate blood vessels, the slot and the V-shaped opening are not connected to avoid the push clip head 42 from being inserted into the V-shaped opening and cutting the blood vessel.

[0063] Preferably, the upper edge of the first slot is connected to the upper edge of the second slot via a third slot wall, and the lower edge of the first slot is connected to the lower edge of the second slot via a fourth slot wall. Both the third and fourth slot walls are flat or curved walls. Specifically, in this embodiment, both the third and fourth slot walls are flat walls. This configuration of the first guide groove 141 facilitates the insertion of the push clip head 42 into the first insertion slot 142.

[0064] Preferably, in this embodiment, both the first groove wall and the second groove wall are planar walls, and both are parallel to the plane where the ligation clip is located. The first groove wall is used to closely contact the upper surface of the push clip head 42, and the second groove wall is used to closely contact the lower surface of the push clip head 42. This further improves the clamping stability of the push clip head 42 on the ligation clip.

[0065] Example 2

[0066] like Figures 5 to 10 As shown, this embodiment provides a clamping chamber 3 device, which includes a clamping chamber 3 for accommodating multiple ligation clips and a pusher clip 4 for pushing the ligation clips. The design of the ligation clips is consistent with that described in Embodiment 1, and will not be repeated here. At least one clamping boss is provided in the middle of the left-right direction of the clamping chamber base plate 31. During the process of the ligation clip 13 being inserted into the clamp jaws, the top of the clamping boss always supports the closed tail 14 of the ligation clip 13, making the closed tail 14 of the ligation clip 13 parallel to the clamping chamber base plate 31. The pusher clip 4 has a pusher clip head 42 for pushing the ligation clip 13. The pusher clip head 42 is a flat plate parallel to the clamping chamber base plate 31, and is provided corresponding to the slot of the ligation clip 13.

[0067] In this way, the insertion boss supports the closed tail 14 of the clamp 13 to be inserted, reducing the up-and-down swing of the closed tail 14 of the clamp during the clamping process, ensuring that the pusher head 42 is inserted into the slot, which in turn facilitates the clamping of the pusher head 42, making the clamping stable and reducing the chance of clamping jamming.

[0068] Preferably, the distal end of the push clamp head 42 is a V-shaped end 421. In this way, the V-shaped end 421 of the push clamp head 42 can cooperate with the arc-shaped groove bottom 143 of the slot to align the closed tail 14 of the clamping clamp 13 and improve the clamping stability.

[0069] 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 14 of the ligation clip 13 near the insertion clamp, making the closed tail 14 of the ligation clip 13 near the insertion clamp parallel to the clamping chamber base plate 31. In this way, the boss 312 not only improves the clamping stability of the ligation clip 13 but also improves the clamping stability of the ligation clip near the insertion clamp 13.

[0070] Example 3

[0071] like Figure 11 and Figure 12 As shown, this embodiment provides a ligation clip, which has the structure of the ligation clip described in Embodiment 1, and will not be repeated here.

[0072] Furthermore, a first protrusion 122 is provided on the outer side of the second clamping arm 12 (i.e., the side of the second clamping arm 12 opposite to the inner side of the second clamping arm 12, the inner side of the second clamping arm 12 being used to form a V-shaped opening). One end of the first protrusion 122 is a connecting end for connecting with the second clamping arm 12, and the other end of the first protrusion 122 is a free end. The first protrusion 122 is located from the closed tail 14 to half of the second clamping arm 12. The ligation clip is accommodated in the clamping chamber 3. The free end of the first protrusion 122 abuts against the second side wall of the clamping chamber 3, the first clamping arm 11 abuts against the first side wall of the clamping chamber 3, and the closed tail 14 is located in the middle of the clamping chamber 3 in the left-right direction.

[0073] Thus, by setting a first protrusion 122 at a specific position on the outer side of the second clamping arm 12 (i.e., from the closed tail 14 to half of the second clamping arm 12), when the ligation clip is accommodated in the clamping chamber 3, the free end of the first protrusion 122 abuts against the side wall of the clamping chamber 3, preventing the closed tail 14 from deflecting due to the yielding of the ligation clip, and keeping the closed tail 14 in the middle of the left and right direction of the clamping chamber 3. As a result, during the clamping process, the pusher clip head 42 does not need to straighten the closed tail 14 of the ligation clip 13 to be inserted, which is conducive to the clamping of the pusher clip 4 and makes the clamping stable. At the same time, since the first protrusion 122 is set at the closed tail 14 to half of the second clamping arm 12, during the ligation clip closing process, the first protrusion 122 will not constrain the bending of the second clamping arm 12, which is conducive to the clamping of the ligation clip.

[0074] It should be noted that, since the ligation clip provided in this embodiment is housed in the clip chamber 3 and does not require the closed tail 14 of the ligation clip 13 to be inserted to be aligned, the guide groove and the insertion groove do not need to be set to an arc shape corresponding to the shape of the closed tail 14. As an example, the guide groove and the insertion groove are set to a straight shape extending in the left and right direction.

[0075] Preferably, in this embodiment, the ligation clip is housed within the clamping chamber 3, with the free end of the first protrusion 122 and the free end of the second clamping arm 12 both abutting against the second side wall of the clamping chamber 3, and the middle portion of the first clamping arm 11 abutting against the first side wall of the clamping chamber 3. This design of the ligation clip housed within the clamping chamber 3 further enhances the morphological stability of the ligation clip stored within the clamping chamber 3, thereby facilitating more stable clip delivery.

[0076] Preferably, the first boss 122 is located at the point between the closed tail 14 and one-third of the second clamping arm 12. This arrangement of the first boss 122 provides a more effective constraint on the closed tail 14. More preferably, in this embodiment, the first boss 122 is located at the point between the closed tail 14 and one-quarter of the second clamping arm 12.

[0077] Optionally, the first boss 122 is arched, and a hollow space is provided between the first boss 122 and the second clamping arm 12. Further, in this embodiment, the middle part of the first boss 122 is broken.

[0078] Example 4

[0079] like Figure 11 and Figure 12 As shown, this embodiment provides a clamping chamber 3 device, which includes a clamping chamber 3 for accommodating multiple ligation clips and a pusher clip 4 for pushing the ligation clips. The design of the ligation clips is the same as that described in Embodiment 3, and will not be repeated here; the design of the clamping chamber 3 is the same as that described in Embodiment 2, and will not be repeated here; the design of the pusher clip 4 is the same as that described in Embodiment 2, and will not be repeated here.

[0080] It should be noted that, since the clamping device 3 provided in this embodiment does not require the closed tail 14 of the clamping clamp 13 to be inserted to be aligned, the distal end of the push clamp head 42 does not need to be set as a V-shaped end 421. As an example, the guide groove and the insertion groove are set as straight shapes extending in the left and right directions, and the distal end of the push clamp head 42 is set as a straight end extending in the left and right directions.

[0081] Example 5

[0082] like Figure 13 and Figure 14 As shown, this embodiment provides a ligation clip, which has the structure of the ligation clip described in Embodiment 1, and will not be repeated here.

[0083] Furthermore, the slot on the closed tail 14 serves as the first slot, which is used for inserting the right side of the push clip head 42. A second protrusion 112 is provided on the outer side of the first clamping arm 11 (i.e., the side of the first clamping arm 11 opposite to the inner side of the first clamping arm 11, the inner side of the first clamping arm 11 is used to form a V-shaped opening). One end of the second protrusion 112 is a connecting end for connecting with the first clamping arm 11, and the other end of the second protrusion 112 is a free end. The second protrusion 112 is located at the halfway point of the closed tail 14 and the first clamping arm 11. A second slot with the insertion opening facing backward is provided at the free end of the second protrusion 112. The second slot is located in the middle of the second protrusion 112 in the vertical direction and is used for inserting the left side of the push clip head 42. Similarly, the second slot also includes a second guide groove and a second insertion groove that are connected sequentially from near to far. The structure of the second guide groove and the second insertion groove is similar to the structure of the first guide groove 141 and the first insertion groove 142, and will not be described in detail here.

[0084] The ligation clip, thus configured, is housed within the clamping chamber 3. It engages with the push clip head 42 via a first and second slot. Compared to embodiment 1, this design extends the engagement point of the ligation clip and push clip head 42 onto the first sidewall of the clamping chamber 3, resulting in a more stable engagement and facilitating the delivery of the push clip head 42 to the ligation clip 13. Furthermore, by extending the engagement point of the ligation clip and push clip head 42 excessively onto the first sidewall of the clamping chamber 3 via the second slot, the delivery is more stable without needing to align the closed tail 14 of the ligation clip 13. Simultaneously, since the second protrusion 112 is located on the first clamping arm 11, it does not constrain the clamping of the ligation clip.

[0085] Preferably, the first slot and the second slot are coplanar. This facilitates the insertion of the push clip head 42 into the first slot and the second slot.

[0086] Preferably, the angle between the second protrusion 112 and the first clamping arm 11 is 30 to 70°. The larger the angle, the more the ligation clip and the push clip head 42 extend into the first side wall of the clamping chamber 3.

[0087] More preferably, the free end face of the second boss 112 is connected to the proximal end face of the closed tail 14, and the first slot and the second slot are connected (not shown in the figure). This makes the clamping more stable.

[0088] It should be noted that, since the ligation clip provided in this embodiment is housed within the clip chamber 3 and does not require alignment of the closed tail 14 of the ligation clip 13 to be inserted, the second guide groove and insertion groove of the first slot do not need to be arc-shaped to correspond to the shape of the closed tail 14. Preferably, in this embodiment, the second guide groove and insertion groove of the first slot are set as straight lines extending in the left-right direction, and the second guide groove and insertion groove of the second slot are set as straight lines extending in the left-right direction.

[0089] Example 6

[0090] like Figure 13 and Figure 14 As shown, this embodiment provides a clamping chamber 3 device, which includes a clamping chamber 3 for accommodating multiple ligation clips and a pusher clip 4 for pushing the ligation clips. The design of the ligation clips is the same as that described in Embodiment 5, and will not be repeated here; the design of the clamping chamber 3 is the same as that described in Embodiment 2, and will not be repeated here; the design of the pusher clip 4 is the same as that described in Embodiment 2, and will not be repeated here.

[0091] It should be noted that, since the clamping device 3 provided in this embodiment does not require the closed tail 14 of the clamping clamp 13 to be inserted to be aligned, the distal end of the push clamp head 42 does not need to be set as a V-shaped end 421. In this embodiment, the guide groove and insertion groove of the first slot are set as straight shapes extending in the left and right directions, the guide groove and insertion groove of the second slot are set as straight shapes extending in the left and right directions, and the distal end of the push clamp head 42 is set as a straight end extending in the left and right directions.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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 ligation clip, characterized in that, The ligation clip has a slot with the insertion port facing backward for inserting the clip head (42) on the proximal side of the closed tail (14). The slot includes a first guide groove (141) and a first insertion groove (142) connected sequentially from near to far. The first guide groove (141) has a first slot and a second slot that are arranged opposite to each other. The first guide groove (141) is connected to the first insertion groove (142) through the second slot. The size of the first slot in the vertical direction is larger than the size of the second slot in the vertical direction. The first insertion groove (142) has a bottom (143) and a first wall and a second wall that are arranged opposite to each other. The first wall is used to fit the upper surface of the push clip head (42), and the second wall is used to fit the lower surface of the push clip head (42). The bottom (143) is used for the push clip head (42) to abut.

2. The ligation clip according to claim 1, characterized in that, At least one slot is provided on the proximal side of the closed tail (14) of the ligation clip.

3. The ligation clip according to claim 1, characterized in that, The shape of the first guide groove (141) corresponding to the closed tail (14) is set to arc, and the shape of the first insertion groove (142) corresponding to the closed tail (14) is set to arc.

4. The ligation clip according to claim 1, characterized in that, Both the first and second groove walls are planar walls parallel to the plane where the ligation clip is located; The upper edge of the first slot is connected to the upper edge of the second slot through the third slot wall, and the lower edge of the first slot is connected to the lower edge of the second slot through the fourth slot wall. Both the third and fourth slot walls are flat or curved walls.

5. The ligation clip according to claim 1, characterized in that, It includes a first clamping arm (11) with a locking hook and a second clamping arm (12) with a hook groove, and the connection between the first clamping arm (11) and the second clamping arm (12) forms a closed tail (14). A first protrusion (122) is provided on the outer side of the second clamping arm (12). One end of the first protrusion (122) is a connecting end for connecting with the second clamping arm (12), and the other end of the first protrusion (122) is a free end. The first protrusion (122) is located from the closed tail (14) to half of the second clamping arm (12). The ligation clip is housed in the clamping chamber. The free end of the first protrusion (122) abuts against the second side wall of the clamping chamber, and the first clamping arm (11) abuts against the first side wall of the clamping chamber. The closed tail (14) is located in the middle of the clamping chamber in the left-right direction.

6. The ligation clip according to claim 5, characterized in that, The ligation clip is housed in the clamping chamber. The free end of the first protrusion (122) and the free end of the second clamping arm (12) both abut against the second side wall of the clamping chamber, and the middle part of the first clamping arm (11) abuts against the first side wall of the clamping chamber.

7. The ligation clip according to claim 1, characterized in that, The slot opened on the closed tail (14) serves as the first slot, which is used for inserting the right side of the push clip head (42); A second protrusion (112) is provided on the outer side of the first clamping arm (11). One end of the second protrusion (112) is a connecting end for connecting with the first clamping arm (11), and the other end of the second protrusion (112) is a free end. The second protrusion (112) is located from the closed tail (14) to half of the first clamping arm (11). The free end of the second protrusion (112) has a second slot with the insertion port facing backward. The second slot is located in the middle of the second protrusion (112) in the vertical direction. The second slot is used for inserting the left side of the push clamp head (42).

8. The ligation clip according to claim 7, characterized in that, The second slot includes a second guide slot and a second insertion slot connected sequentially from near to far. The second guide slot has a third slot and a fourth slot arranged opposite to each other. The second guide slot is connected to the second insertion slot through the fourth slot. The third slot is larger in the vertical direction than the fourth slot. The second insertion slot has a bottom (143) and a fifth and a sixth slot wall arranged opposite to each other. The fifth slot wall is used to fit the upper surface of the push clip head (42), and the sixth slot wall is used to fit the lower surface of the push clip head (42). The bottom (143) is used for the push clip head (42) to abut.

9. The ligation clip according to claim 7, characterized in that, The first slot and the second slot are coplanar.

10. A clamping device, characterized in that, It has a ligation clip as described in any one of claims 1 to 9.

11. The clamping device according to claim 10, characterized in that, It includes a clamping chamber (3) for accommodating multiple ligation clips and a pusher clip (4) for pushing the 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 (14) of the clamping clamp (13), so that the closed tail (14) of the clamping clamp (13) is parallel to the clamping chamber bottom plate (31). The push clamp (4) has a push clamp head (42) for pushing the clamping clamp (13), and the push clamp head (42) is provided with a slot corresponding to the clamping clamp (13).

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