A cartridge and clip applier

Abstract

The application provides a clip magazine device, which comprises a clip magazine containing a plurality of closed clips, a transmission member located at least partially in the clip magazine, and a push clip partially inserted into the clip magazine; a distal end of the push clip is capable of abutting against a distal-most closed clip among the plurality of closed clips to push the closed clip into a jaw when the push clip moves towards a distal end of the clip magazine; a distal end of the transmission member abuts against a proximal-most closed clip, and the transmission member and the push clip are connected by a one-way transmission connection to enable the transmission member to move in the same direction with the push clip to push the plurality of closed clips to move in the same direction when the push clip moves towards the distal end of the clip magazine; a first stop structure is arranged on the transmission member, and a second stop structure corresponding to the first stop structure is arranged on a top of the clip magazine; the first stop structure and the second stop structure are matched to prevent the transmission member from moving towards a proximal end of the clip magazine when the push clip moves towards the proximal end of the clip magazine for resetting. The application further provides a clip applier with the above clip magazine device. The clip magazine device is stable in clip feeding and is not prone to clip feeding jam.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more particularly to the field of surgical instruments. Background Technology

[0002] Clip applicators are typically used during surgical procedures to clamp tubular tissues, thereby preventing fluid leakage from within the tissues.

[0003] To improve surgical efficiency, clip applicators capable of continuous clip delivery are typically used. These applicators store multiple closure clips in their magazines. As the applicator fires and closes one closure clip, it simultaneously delivers the next clip to the jaws for the next firing. This continuous firing of closure clips reduces hemostasis time during surgery and improves surgical efficiency. However, currently available clip applicators with continuous closure clip firing capabilities suffer from unstable clip delivery methods in practical use, which can easily lead to new damage to tubular tissues or adjacent tissues. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the above-mentioned technology, the present invention provides solutions to at least some extent. Therefore, the present invention proposes a clamping device that ensures stable clamping and reduces the likelihood of clamping jamming.

[0006] The present invention also proposes an applicator having the above-mentioned clamping device.

[0007] (II) Technical Solution

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

[0009] In a first aspect, a clamping device includes a clamping chamber accommodating a plurality of closed clamps, a transmission member at least partially located within the clamping chamber, jaws connected to the distal end of the clamping chamber, and a pusher clip partially inserted into the clamping chamber; the distal end of the pusher clip is capable of abutting against the farthest closed clamp among the plurality of closed clamps to push the farthest closed clamp into the jaws when the pusher clip moves toward the distal end of the clamping chamber; the distal end of the transmission member abuts against the closest closed clamp among the plurality of closed clamps, and the transmission member and the pusher clip form a unidirectional transmission connection in which the pusher clip moves toward the distal end of the clamping chamber, thereby driving the transmission member to move in the same direction to push the plurality of closed clamps to move in the same direction; the transmission member is provided with a first stop structure, and the top of the clamping chamber is provided with a second stop structure corresponding to the first stop structure, the first stop structure and the second stop structure cooperating to prevent the transmission member from moving toward the proximal end of the clamping chamber when the pusher clip moves toward the proximal end of the clamping chamber to reset.

[0010] Preferably, one of the first stop structure and the second stop structure is an elastic stop, and the other is a plurality of one-way stop grooves arranged in a proximal direction; one of the end walls of the one-way stop groove is a stop wall, and the other is adapted to slide relative to the elastic stop so that the elastic stop engages with the next one-way stop groove; the elastic stop is located in one of the one-way stop grooves in its natural state, and when the pusher moves toward the distal end of the clamping chamber, the elastic stop slides relative to the one-way stop groove until they disengage and the elastic stop engages with the next one-way stop groove; when the pusher moves toward the proximal end of the clamping chamber, the stop wall of the one-way stop groove abuts against the elastic stop.

[0011] Preferably, the elastic stop is a stop spring plate disposed on the transmission member, the stop spring plate being raised towards at least one side of the top of the clamping chamber; the plurality of one-way stop grooves are equally spaced on at least one side of the top of the clamping chamber, the stop wall of the one-way stop groove is used to abut against the raised end of the stop spring plate; when the push clamping piece moves to the far end of the clamping chamber, the stop spring plate disengages from the one-way stop groove it is in and enters the next one-way stop groove; when the push clamping piece moves to the near end of the clamping chamber to reset, the raised end of the stop spring plate abuts against the stop wall of one of the one-way stop grooves, thereby stopping the transmission member.

[0012] Preferably, the stop spring protrudes horizontally from the top of the transmission member; the one-way stop groove is disposed on the side wall of the clamping chamber, and the proximal end wall of the one-way stop groove is the stop wall.

[0013] Preferably, the transmission component is further provided with a first transmission structure, and the push clamp is provided with a second transmission structure, wherein the first transmission structure and the second transmission structure form the unidirectional transmission connection.

[0014] Preferably, the first transmission structure is an elastic pusher, and the second transmission structure is a plurality of unidirectional push grooves arranged along the proximal-rear direction; the proximal wall of the unidirectional push groove is a pushing wall, and the distal wall of the unidirectional push groove is an inclined wall sloping towards the distal end; the elastic pusher is located in one of the unidirectional push grooves in its natural state; when the pusher clip moves toward the distal end of the clamping chamber, the pushing wall of the unidirectional push groove and the elastic pusher form a co-directional pushing transmission; when the pusher clip moves toward the proximal end of the clamping chamber, the elastic pusher slides along the distal wall of the unidirectional push groove until the two separate and enter the next unidirectional push groove.

[0015] Preferably, the elastic pusher is a push spring plate disposed on the transmission member, the push spring plate being tilted upwards in a direction opposite to the clamping direction and toward the clamping plate; the plurality of one-way push grooves are equally spaced on the clamping plate, the proximal end wall of the one-way push groove is used to abut against the tilted end of the spring plate; when the clamping plate moves toward the far end of the clamping chamber, the tilted end of the push spring plate abuts against the proximal end wall of one of the one-way push grooves on the clamping plate, and by pushing the push spring plate to move, the transmission member pushes the nearest closing clamp to clamp toward the far end of the clamping chamber; when the clamping plate moves toward the near end of the clamping chamber to reset, the push spring plate disengages from the one-way push groove it is in and enters the next one-way push groove.

[0016] Preferably, the pushing spring protrudes from the transmission member toward the top of the clamping chamber; the one-way push groove is disposed at the bottom of the pushing clamp.

[0017] Preferably, the closing clamp includes a U-shaped body; the distal end of the transmission member is provided with a groove, the groove wall of which is an inclined surface that matches the closed tail of the U-shaped body, or the groove wall is U-shaped.

[0018] The present invention also proposes a clamping device, including the clamping device described above.

[0019] (III) Beneficial Effects

[0020] The beneficial effects of this invention are:

[0021] In the clamping device and clamp applicator of the present invention, by providing a transmission component inside the clamping chamber, while the pusher plate pushes the clamp to be inserted into the clamp, the transmission component moves a fixed distance under the pusher plate, thereby ensuring that the remaining clamps directly pushed by the transmission component are pushed a predetermined distance to the far end each time, and the clamping method is stable.

[0022] Furthermore, when the pusher plate moves towards the near end of the clamping chamber, the stop structure between the transmission component and the clamping chamber prevents the transmission component from moving towards the near end with the pusher plate, thus avoiding the situation where the transmission component reciprocates and causes the clamping to jam.

[0023] Furthermore, the clamping device and clamping applicator provided by this invention have a simple clamping structure and low cost. Attached Figure Description

[0024] The present invention is described with reference to the following figures:

[0025] Figure 1 This is a partially exploded structural diagram of Embodiment 1 of the clamping device according to the present invention;

[0026] Figure 2 for Figure 1A schematic diagram of the closed clamp used in the clamping device;

[0027] Figure 3 To accommodate a closing clamp Figure 1 A schematic diagram of the clamping compartment without the pusher clips;

[0028] Figure 3A This is a schematic diagram of the push clip head of the push clip according to the present invention;

[0029] Figure 3B This is a distal view of a different embodiment of the push clip head according to the present invention;

[0030] Figure 4 To accommodate a closing clamp Figure 1 The cross-sectional view of the clamping chamber without the pusher clips;

[0031] Figure 5 for Figure 1 A schematic diagram of the transmission components of the clamping device in the middle;

[0032] Figure 6 for Figure 1 A side view of the transmission components of the clamping device in the middle;

[0033] Figure 7 for Figure 1 A partial longitudinal section sectional view of the compartment;

[0034] Figure 8 for Figure 7 A magnified schematic diagram of a local structure;

[0035] Figure 9 This is a partially enlarged schematic diagram of the clamping mechanism of the clamping device of the present invention.

[0036] [Explanation of Labels in the Attached Image]

[0037] 1: Closed clamp;

[0038] 11: First clamping arm; 12: Second clamping arm; 13: V-shaped tail; 14: Closed clamp for insertion; 15: Final closed clamp;

[0039] 2: Mid-section;

[0040] 21: Clamping compartment bottom plate; 22: First side wall; 23: Second side wall; 24: Side top wall; 25: One-way stop groove; 251: Stop wall; 252: Sliding wall;

[0041] 3: Push clip; 31: Push clip head; 32: Push clip body;

[0042] 311: First pusher; 312: Second pusher; 313: Third pusher; 314: Fourth pusher;

[0043] 321: Proximal end; 322: Distal end;

[0044] 34: One-way push groove; 341: First one-way push groove; 342: Second one-way push groove; 343: Third one-way push groove; 35: Pushing wall; 33: Inclined wall;

[0045] 4: Transmission components;

[0046] 41: Elastic pusher; 411 First raised end;

[0047] 42: Elastic stop; 421: Second raised end; 43: Horizontal part; 44: Inclined part; 431: Fixed end;

[0048] 5: Jaws; 6: Clamping block; 7: Jaw retaining plate; 8: Firing plate; 9: Outer tube. Detailed Implementation

[0049] 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 4 The orientation is used as a reference.

[0050] To clearly illustrate the technical problem actually solved by the present invention, an exemplary clamping device of an applicator and an exemplary closing clamp are explained below. However, it should be understood that the clamping device proposed in this invention should not be limited to the exemplary closing clamp and the clamping device of the exemplary applicator described herein. Rather, these examples are provided to enable a clearer and more thorough understanding of the invention and to fully convey the scope of the invention to those skilled in the art.

[0051] Example 1

[0052] like Figure 1 As shown, an exemplary clamping device provided by the present invention includes: a clamping magazine 2 accommodating a plurality of closing clamps 1, a transmission member 4 at least partially located in the clamping magazine 2, and a push clamping piece 3 partially inserted into the clamping magazine 2. Of course, those skilled in the art will recognize that the clamping device may also include: jaws 5 and a pressure block 6 at the distal end of the clamping magazine 2, a jaw fixing piece 7 for fixing the jaws 5, a firing piece 8 for clamping the jaws 5 to complete the firing of the closing clamps 1, and an outer tube 9 accommodating the above components. The jaws 5, pressure block 6, jaw fixing piece 7, firing piece 8, and outer tube 9 can adopt structures from the prior art, which will not be described in detail in the present invention.

[0053] In the following description, the clamping device is defined as the proximal end (closer to the operator) and the distal end (farthest from the operator). For example... Figure 1 , 4As shown, multiple closing clips 1 are arranged sequentially in a near-far direction and stored inside the clamping chamber 2. The openings of the closing clips 1 all face the clamping direction, that is, towards the far end of the clamping chamber 2. The multiple closing clips 1 include a waiting-to-enter clamping clip 14 (the closing clip to enter the jaws 5) located at the farthest end of the clamping chamber 2, a final closing clip 15 located at the closest end of the clamping chamber 2, and multiple closing clips 1 arranged sequentially between the waiting-to-enter clamping clip 14 and the final closing clip 15. The closing clips 1, as shown... Figure 2 As shown, the clamp 1 includes a generally U-shaped body, wherein a generally V-shaped tail 13 is formed at the closed end of the clamp 1. The V-shaped tail 13 is connected to one end of the first clamping arm 11 and the second clamping arm 12, respectively, and the other end of the two clamping arms is a free end. Preferably, the V-shaped tail 13 of the clamp 1 can be integrally formed with the first clamping arm 11 and the second clamping arm 12.

[0054] like Figure 3 As shown, the clamping chamber 2, which houses the series of closing clamps 1, includes a clamping chamber base plate 21 and a first sidewall 22 and a second sidewall 23 extending vertically upward from both sides of the clamping chamber base plate 21. The first clamping arm 11 of the closing clamp 1 substantially fits against the first sidewall 22 of the clamping chamber 2, and the second clamping arm 12 substantially fits against the second sidewall 23 of the clamping chamber 2. In use, the clamping chamber 2 is adapted to hold one or more of the aforementioned closing clamps 1, such that the first clamping arms 11 and the second clamping arms 12 of the closing clamps 1 are symmetrically positioned relative to each other along the axial direction within the clamping chamber 2. Those skilled in the art should understand that the shape, size, and structure of the clamping chamber 2 can be varied depending on the shape, size, and structure of the closing clamps 1, or other closing devices suitable for placement therein. In this embodiment, the clamping chamber base plate 21, which holds the aforementioned closing clamps 1, is preferably an elongated plate, and since the bottom of the closing clamp 1 is a plane, the top of the clamping chamber base plate 21 that contacts the bottom of the closing clamp 1 is adapted to be a plane.

[0055] like Figure 3-5 As shown, the transmission member 4 is located inside the clamping chamber 2, adjacent to the final closing clamp 15. That is, the distal end of the transmission member 4 can abut against the V-shaped tail 13 of the final closing clamp 15 when needed, to push the final closing clamp 15, thereby pushing the remaining closing clamps 1, except for the waiting clamp closing clamp 14, to move distally. Preferably, the distal end of the transmission member 4 is configured to fit the shape of the V-shaped tail 13 of the closing clamp 1, thereby stably pushing the final closing clamp 15, and thus pushing a series of closing clamps 1 arranged and stored between the waiting clamp closing clamp 14 and the final closing clamp 15, together to move distally to the clamping chamber 2. Thus, the distal end of the transmission member 4 can be changed according to the tail structure of the closing clamp 1.

[0056] exist Figure 5 , 6An exemplary transmission element 4 is shown in more detail below. Although the transmission element 4 may have different structures and may use different other technologies to drive the closed clamp 1 to move toward the distal end of the clamping chamber 2, in this exemplary embodiment, the transmission element 4 is a generally strip-shaped sheet structure having a distal end and a proximal end. The width of the sheet structure should be less than the width between the first sidewall 22 and the second sidewall 23 of the clamping chamber 2, so that the transmission element 4 can move in the proximal direction inside the clamping chamber 2. Preferably, the width of the transmission member 4 is approximately equal to the width between the first side wall 22 and the second side wall 23 of the clamping chamber 2, so that there is a certain friction between the transmission member 4 and the first side wall 22 and / or the second side wall 23 of the clamping chamber 2. When the transmission member 4 does not need to move, the friction between the transmission member 4 and the inner wall of the clamping chamber 2 can keep the transmission member 4 stationary to a certain extent. When the pusher 4 pushes the clamping jaw 14 into the jaws, the transmission member 4 can overcome the friction between itself and the inner wall of the clamping chamber 2 and slide, and during the sliding process, there will be no unwanted movement in any direction other than the near-far direction, which helps to maintain the stability of the clamping. The distal end of the transmission member 4 that abuts against the unclosed clamp 15 located at the nearest end of the clamping chamber 2 is provided with Figure 5 The groove shown has a wall that is an inclined surface that matches the closed end of the V-shaped tail 13, or the groove wall is U-shaped. Of course, the structure of the distal end of the transmission member 4 can be changed according to the structure of the closing clamp 1 to ensure that the transmission member 4 and the V-shaped tail 13 of the closing clamp 1 have a certain contact area, so that the closing clamp 1 can be pushed stably.

[0057] Furthermore, the transmission member 4 is provided with a structure that facilitates its movement towards the distal end within the clamping chamber 2 and prevents it from moving towards the proximal end. This structure ensures the proper pushing and positioning of the closing clamp 1 within the clamping chamber 2, allowing the transmission member 4 to move only a predetermined distance towards the distal end during each push. In this embodiment, the transmission member 4 includes a first transmission structure capable of forming a unidirectional transmission connection with the push clamp 3, such that when the push clamp 3 moves towards the distal end of the clamping chamber, the transmission member 4 moves synchronously towards the distal end through the engagement of this first transmission structure. This first transmission structure can be... Figure 5 The elastic pusher 41 formed on the transmission member 4 is shown as an example. It should be understood that the elastic pusher 41 is only an example, and any structure that can realize a unidirectional transmission connection relationship is possible.

[0058] In its natural state (i.e., when the transmission member 4 is removed from the clamping chamber 2), the elastic pusher 41 is preferably a pre-formed, elongated cantilever structure. This cantilever structure extends from the transmission member 4 towards its proximal end and upwards, forming an angle with the transmission member 4. Simultaneously, the free end of the cantilever structure abuts against the first raised end 411 of the push clamp 3. A second transmission structure, which forms a unidirectional transmission connection with the elastic pusher 41, particularly with the first raised end 411, is also formed on the push clamp 3, and will be described in detail below. In use, each time the push clamp 3 moves further away, the second transmission structure abuts against the first raised end 411 of the elastic pusher 41, causing the transmission member 4 to move synchronously a predetermined distance further away within the clamping chamber. Subsequently, the push clamp 3 moves proximally to reset. The elastic push member 41 is configured such that its first raised end 411 can be biased by the second transmission structure on the push clamp 3 and slide relative to the push clamp 3, thereby preventing the transmission member 4 from moving proximally, i.e., it does not follow the push clamp 3 to move proximally. In this embodiment, the elastic push member 41 can be a structure that pushes a spring, but it should be understood that it is not limited to a spring structure, and can be other elastic structures suitable for engaging with the second transmission structure to achieve unidirectional transmission.

[0059] As described above, the transmission member 4 also includes a first stop structure formed thereon for preventing the transmission member 4 from moving towards the proximal end of the clamping chamber 2. This first stop structure can be an elastic stop 42, which can have various structures. For example... Figure 5 As exemplarily shown, the elastic stop 42 is a stop spring provided on the transmission member 4. Preferably, the stop spring protrudes from at least one side of the transmission member 4 in the left-right direction toward the top of the clamping chamber 2. Preferably, the elastic stop 42 is provided to protrude entirely from the upper surface of the transmission member 4, and its height can exceed the top of the clamping chamber 2, so as to ensure that the second protruding end 421 of the elastic stop 42 protruding toward at least one side of the top of the clamping chamber 2 can accurately engage with at least one side of the top of the clamping chamber 2, so that the transmission member 4 does not move toward the proximal end when the push clamp 3 moves toward the proximal end of the clamping chamber 2 to reset. At the same time, although the height of the elastic stop 42 exceeds the top of the clamping chamber 2, it should be understood that the height of the elastic stop 42 is set so as not to interfere with the movement of the elastic stop 42 and the push clamp 3 located at the top of the clamping chamber 2, ensuring that the push clamp 3 can be stably pushed toward the distal end of the clamping chamber 2 and reset toward the proximal end of the clamping chamber 2.

[0060] In this embodiment, the elastic stop 42 is preferably as follows: Figure 5As shown, the transmission member 4 includes a horizontal portion 43 and an inclined portion 44 located on the same horizontal plane and angled to each other. The horizontal portion 43 is located further away from the inclined portion 44, and extends parallel to the axis of the clamping chamber 2 in the near-far direction, located in the middle of the left-right direction of the transmission member. The fixed end 431 of the horizontal portion 43 is connected to the distal end of the elastic stop 42 of the transmission member 4. The other end of the horizontal portion 43 is connected to one end of the inclined portion 44. The inclined portion 44 extends / curves from the connected end toward at least one side of the top of the clamping chamber to form the second curved end 421, that is, the inclined portion 44 extends / curves to the left and / or right from the connected end. In use, the angle between the horizontal portion 43 and the inclined portion 44 is formed to allow the transmission member 4 to move distally within the clamping chamber 2. The fixed end 431 is as follows: Figure 5 As exemplarily shown, it is roughly T-shaped to increase the connection strength with the transmission component 4, ensuring that the elastic stop 42 is stably protruding from the upper part of the transmission component 4 and can form an effective stop engagement with the second stop structure on the clamping chamber 2, preventing undesirable movement of the transmission component 4 towards the proximal end. Because the elastic stop 42 is protruding, a shape can be formed along the entire length of the top of the transmission component 4 corresponding to the elastic stop 42, as shown in the diagram. Figure 5 , 6 The stepped depression shown means that the height of the section of the transmission member 4 corresponding to the elastic stop 42 is set slightly lower than the height of the rest of the transmission member 4. This setting ensures that the elastic stop 42, preferably the stop spring, has a certain thickness, ensuring that the upper surface of the transmission member 4 contacts the clamping surface while increasing the strength of the elastic stop 42.

[0061] Figure 1 , 7 Example 8 illustrates a pusher clip 3 located at the top of the clamping chamber 2, used to push the farthest clamping jaw 14 inside the clamping chamber 2 into the jaws, and simultaneously drive the transmission component 4 to move towards the far end of the clamping chamber 2. In use, the pusher clip 3 directly engages only the farthest clamping jaw 14 inside the clamping chamber 2 and pushes it into the jaws. Figure 1 As shown, the push clamp 3 has a generally elongated strip structure with a proximal end and a distal end. The proximal end of the push clamp 3 is adapted to be drivenly connected to the actuator of the clamp applicator (this is prior art and will not be described in detail), while the distal end of the push clamp 3 is drivenly connected to the farthest closing clamp 14 to be inserted into the jaws 5, so that with each firing of the actuator, the push clamp 3 moves a predetermined distance toward the distal end of the clamping chamber 2, ensuring that a closing clamp 1 is pushed into the jaws 5.

[0062] The push clamp 3 in this embodiment includes an elongated push clamp body 32 and a push clamp head 31 connected to the distal end of the push clamp body 32. The push clamp body 32 includes a proximal end 321 and a distal end 322 that are connected to each other and set at an angle. The end of the distal end 322 that is not connected to the proximal end 321 is connected to the push clamp head 31. The proximal end 321 is set horizontally, and the distal end 322 connected to it is inclined at an angle to the horizontal plane. That is, the distal end 322 extends distally and downward from the end connected to the proximal end 321. This arrangement enables the push clamp to have a pushing force F in the horizontal direction that is generally consistent with the direction of movement of the closed clamp 1 after it has entered the jaws 5 during the process of pushing the push clamp into the jaws 5, especially after the closed clamp has partially entered the jaws 5. Preferably, the angle between the distal end 322 and the horizontal plane is the same as the angle between the jaws 5 and the horizontal plane. In this way, the direction of the pushing force can be consistent with the movement direction of the closed clamp 1 after entering the jaws 5, which helps to improve the pushing efficiency and achieve stable clamping.

[0063] Preferably, the distal end 322 has a shape that is narrow at the distal end and wide at the proximal end, that is, the width of the end where the distal end 322 is connected to the proximal end 321 is significantly greater than the width of the end where it is connected to the push clip body 32. The proximal end 321 and the distal end 322 of the push clip body 32 can be integrally formed components.

[0064] like Figure 3 As exemplarily shown, the pusher head 31 connected to the distal end of the pusher body 32 is generally a V-shaped member or an arc-shaped member that conforms to the shape of the closed tail of the clamp. The V-shaped member / arc-shaped member has a pushing surface 33 that directly contacts the closed tail of the clamp. The pushing surface 33 has a shape that matches the closed tail, so that when the pusher 3 moves to the distal end to push the clamp 1, the pusher head 31 can fit against the closed tail of the clamp 1. By setting the pusher head 31 to conform to the closed tail of the clamp to be pushed, a surface-to-surface pushing method is obtained, ensuring that the clamps 1 can be stably pushed into the jaws 5 one by one.

[0065] In this embodiment, looking from the far side of the push clip 3 towards the push clip head 31, the push surface 33 is a straight line extending in the horizontal direction, and the thickness of the push clip head 31 can be equal to the thickness of the push clip body 32.

[0066] Of course, those skilled in the art will understand that the specific shape of the pushing surface 33 of the push clip head 31 can be adjusted according to whether the push clip 3 is used to push titanium clips or plastic clips, based on the closing tail of different types of closing clips, and such adjustments are all within the technical concept of the present invention.

[0067] Specifically, the push clamp head 31 may include a first push plate 311 and a second push plate 312. The first end of the first push plate 311 intersects with the first end of the second push plate 312. The second end of the first push plate 311 and the second end of the second push plate 312 form the two ends of the opening of the V-shaped member / arc-shaped member. The intersection of the first push plate 311 and the second push plate 312 forms the connection end between the V-shaped member / arc-shaped member and the push clamp body 32. This connection end is located in the middle of the clamp in the left-right direction.

[0068] The first pusher 311 has a first pushing surface, and the second pusher 312 has a second pushing surface. The first pushing surface and the second pushing surface constitute a pushing surface that matches the closed tail of the closing clamp 1, so that the pusher head 31 can at least partially wrap the closed tail of the closing clamp 1 during the pushing process, thereby making the pushing clamp stable and the pushing clamp efficient.

[0069] Furthermore, the push clip head 31 can fit / wrap the entire closed tail of the closing clip, that is, the width of the push surface of the push clip head 31 is at least equal to or slightly larger than the width of the closing clip.

[0070] Furthermore, looking at the pusher head 31 from the far side of the pusher clip 3, the pusher surface is in the shape of a straight line.

[0071] Furthermore, the pusher head 31 may also include a third pusher 313 and a fourth pusher 314. Similarly, the distal end of the third pusher 313 has a third pushing surface, and the distal end of the fourth pusher 314 has a fourth pushing surface. This arrangement further increases the force-applying surface that contacts the closing tail of the clamp during the pushing and closing process, and correspondingly increases the force-bearing surface on the closing tail of the clamp, thereby further improving the clamping stability. When viewed from the distal side of the pusher 31, the pushing surface of the pusher head 31 is cross-shaped.

[0072] Furthermore, the pushing surface of the pusher head 31 is inclined in the width direction of the pusher head. That is, when viewed from the far side of the pusher 3, the pushing surface of the pusher head 31 is inclined in a straight line. The free end of the first pusher 311 is higher than the connection end between the first pusher 311 and the second pusher 312, and the connection end of the second pusher 312 is higher than the free end of the second pusher 312. Alternatively, the reverse arrangement is also feasible, that is, the free end of the first pusher 311 is lower than the connection end between the first pusher 311 and the second pusher 312, and the connection end of the second pusher 312 is lower than the free end of the second pusher 312. In this way, it can be ensured that the pusher head 31 can form surface-to-surface contact with the closed tail of the partially closed clamp throughout the entire height direction, thereby ensuring the stability and efficiency of the clamping.

[0073] As mentioned above, corresponding to the first transmission structure of the transmission member 4, the push clamp 3 is provided with a second transmission structure that forms a unidirectional transmission connection with the first transmission structure. In this embodiment, the second transmission structure is... Figure 7 The illustratively shown pusher clip 3 has several one-way push grooves 34 formed at its bottom for engaging with the elastic pusher 41 disposed on the transmission member 4. The number of one-way push grooves 34 is variable, but in the exemplary embodiment, the number of one-way push grooves 34 on the pusher clip 3 corresponds to or is greater than the number of closed clamps 1 placed in the clamping chamber 2, and more preferably, the number of one-way push grooves 34 is one more than the number of closed clamps 1. As a non-limiting embodiment, the pusher clip 3 may include 22 one-way push grooves 34 formed therein for pushing 21 closed clamps pre-arranged in the clamping chamber. Such a structure allows the pusher clip 3 to push the transmission member 21 times, thereby advancing the 21 closed clamps 1 into the jaws for use. The one-way push grooves 34 are also preferably arranged at equal intervals to ensure that the pusher clip 3 can engage and push the transmission member 4 each time it pushes.

[0074] Preferably, the proximal wall of the unidirectional push groove 34 is a pushing wall 35, and the distal wall of the unidirectional push groove is an inclined wall 33 sloping towards the distal end. The elastic pusher 41, in its natural state, is located in one of the multiple unidirectional push grooves 34. When the push clamp 3 moves towards the distal end of the clamping chamber 2, the proximal wall of the unidirectional push groove 34 and the elastic pusher 41 form a co-directional pushing transmission. That is, the first raised end 411 of the elastic pusher 41 engages in one of the unidirectional push grooves 34 and abuts against the proximal wall of the engaged unidirectional push groove 34. Therefore, when the push clamp 3 moves towards the distal end, the abutment between the raised end and the proximal wall causes the transmission member 4 to move synchronously towards the distal end. After the push clamp 3 completes one clamping operation, when it moves towards the proximal end of the clamping chamber 2 to reset, the first raised end 411 of the elastic pusher 41 disengages from the abutment state with the proximal wall and slides along the distal wall of the unidirectional push groove 34 until the two disengage and the pusher enters the next unidirectional push groove 34.

[0075] Figure 4 Only a preferred embodiment of the unidirectional push groove 34 is shown, wherein the first unidirectional push groove located at the closest end of the push clamp 3 is indicated by reference numeral 311, and in the distal direction, the second unidirectional push groove 342 is adjacent to the first unidirectional push groove 341, and so on, with the third unidirectional push groove 343 being adjacent to the second unidirectional push groove in the distal direction. Figure 4In this design, the proximal wall of the one-way push groove 34 is a pushing wall 35, extending vertically downwards. However, those skilled in the art should understand that this proximal wall can also be set at an angle to the vertical plane, such as the bottom of the proximal wall being further away from the top of the proximal wall. This angle is preferably less than 90°. When ensuring that the first raised end 411 of the elastic push member 41 enters and engages with the one-way push groove 34, the larger the angle, the better the engagement effect. The smaller the angle, even when it is close to the vertical plane, the lower the processing difficulty. Compared to the pushing wall 35, the distal wall of the one-way push groove 34 has a larger angle with the vertical plane, forming a gentle inclined wall 33 that allows the first raised end 411 of the elastic push member 41 to slide along the distal wall. This ensures that when the push clamp 3 moves to its proximal end to reset, a smaller pushing force can be used to disengage the elastic push member 41 from the originally engaged one-way push groove 34 and slide it into the next one-way push groove 34 in the distal direction.

[0076] according to Figure 3 The clamping chamber 2 provided in this embodiment, as exemplarily shown, preferably has a side top wall 24 extending perpendicularly to one of its side walls, substantially parallel to the bottom plate 21 of the clamping chamber. The side top wall 24 and the elastic stop 42 of the transmission member 4 are approximately on the same horizontal plane. More preferably, the height of the elastic stop 42 can be slightly higher than the side top wall 24 to ensure that the elastic stop 42 engages with the second stop structure provided on the side top wall 24, thereby preventing undesirable movement of the transmission member 4 towards the proximal end of the clamping chamber 2. The second stop structure provided on the side top wall 24 of the clamping chamber 2 can have different structures. This embodiment exemplarily shows one type of second stop structure as a one-way stop groove 25; such as... Figure 9 As shown, the open slot of the one-way stop groove 25 is horizontally oriented towards the middle part of the top of the clamping chamber in the left-right direction, so as to facilitate the elastic stop member 42, which is provided on the transmission member 4, to rise horizontally from the middle of the transmission member 4 towards the top wall 24 of the clamping chamber 2 and enter the one-way stop groove 25. Among them, the proximal wall of the one-way stop groove 25 is a stop wall 251, and the distal wall is a sliding wall 252 suitable for the elastic stop member 42 to slide in the distal direction into the next one-way stop groove 25. In its natural state, the elastic stop 42 is located in a one-way stop groove 25. During the process of the push clamp 3 moving towards the far end of the clamping chamber 2, due to the one-way transmission connection between the transmission member 4 and the push clamp 3, the transmission member 4 will move towards the far end with the push clamp 3. At this time, the sliding wall 252 forms a bias pressure on the second raised end 421 of the elastic stop 42. As the transmission member 4 moves further towards the far end, the second raised end 421 will slide away from the original one-way stop groove 25 and enter the next one-way stop groove 25 and engage with it. When the push clamp 3 moves towards the near end of the clamping chamber 2, the stop wall 251 of the one-way stop groove 25 and the second raised end 421 of the elastic stop 42 form an abutment stop to prevent the transmission member 4 from sliding towards the near end of the clamping chamber 2.

[0077] Those skilled in the art should understand that the first stop structure on the transmission component 4 is not limited to an elastic stop 42, nor is the second stop structure on the top wall 24 of the clamping chamber 2 limited to a one-way stop groove 25; one-way stop grooves 25 can also be provided on the transmission component 4, and elastic stop 42 can be provided on the top wall 24 of the clamping chamber 2. When a one-way stop groove 25 is provided on the transmission component 4, it is understood that the proximal wall of the one-way stop groove 25 can be adjusted to a sliding wall suitable for the sliding of the elastic stop 42, while the distal wall can be a stop wall, and multiple elastic stop members should be provided. At this time, an elastic stop 42 is located in the one-way stop groove 25 on the transmission member 4 in its natural state. When the push clamp 3 moves to the far end of the clamping chamber 2, the one-way stop groove 25 slides along the elastic stop 42 until the two separate and engage with the next elastic stop 42. When the push clamp 3 moves to the near end of the clamping chamber 2, the stop wall 251 of the one-way stop groove 25 forms an abutment stop with the elastic stop 42 to prevent the transmission member 4 from sliding to the near end of the clamping chamber 2.

[0078] More preferably, in order to ensure that the transmission member 4 can maintain the engagement between the elastic stop 42 and the currently engaged one-way stop groove 25 when the push clamp 3 moves to the proximal end of the clamping chamber 2 for resetting, the stop structure can be added to the transmission member 4 and the clamping chamber 2. For example, at the top of the first side wall 22 and the second side wall 23 of the clamping chamber 2, a side top wall 24 extends perpendicularly to the side wall and is substantially parallel to the bottom plate 21 of the clamping chamber. One-way stop grooves 25 are symmetrically opened on the two side top walls 24. Preferably, the one-way stop grooves 25 opened on the two side top walls 24 are equally spaced, so that during each push of the push clamp 3 to close the clamp 1 into the jaws, the elastic stop 42 of the transmission member 4 slides out from one one-way stop groove 25 and slides a predetermined distance towards the distal end of the clamping chamber 2 before entering the next adjacent one-way stop groove 25. Correspondingly, an elastic stop 42 can be added, one of which abuts against a one-way stop groove 25 provided on the side top wall 24 of the first side wall 22, and the other elastic stop 42 abuts against a one-way stop groove 25 provided on the side top wall 24 of the second side wall 23. Alternatively, only one elastic stop 42 can be provided, which may include a horizontal portion 43 and inclined portions 44 extending to the left and right from the horizontal portion 43 respectively. That is, one inclined portion 44 extends towards the first side wall 22 to form a second raised end 421, and the other inclined portion 44 extends towards the second side wall to form another second raised end 421. Such an elastic stop 42 is generally Y-shaped (not shown), so that the transmission member 4 is subjected to balanced force on both sides in its width direction, so that the push clamp 3 can move and reset towards the proximal end of the clamping chamber 2 with less resistance and in a more stable manner, while the transmission member 4 remains engaged with the current one-way stop groove 25.

[0079] As previously explained, various other components can be used to control the movement of the transmission component 4 within the clamping chamber 2, instead of using the elastic pusher 41, elastic stop 42, and one-way push groove 34 and one-way stop groove 25.

[0080] Example 2

[0081] In Embodiment 1, the first transmission structure and the first stop structure on the transmission member 4 are both disposed on the top of the transmission member 4. In this embodiment, another preferred structure of the transmission member 4 is shown as an example. In this embodiment, the similarities with Embodiment 1 will not be repeated.

[0082] The main difference between this embodiment and Embodiment 1 is that the first transmission structure and the first stop structure are respectively disposed at the top and bottom of the transmission member. For example, the elastic stop 42 is disposed at the bottom of the transmission member 4. In this embodiment, the elastic stop 42 disposed at the bottom of the transmission member 4 can have the same structure as the elastic pusher disposed at the top of the transmission member 4, that is, the elastic stop 42 is also formed to be raised from the transmission member 4 towards the proximal end and downward of the transmission member 4, so as to abut against the one-way stop groove 25 formed on the clamping chamber bottom plate 21. The one-way stop groove 25 is disposed in the middle of the left-right direction of the clamping chamber bottom plate 21, and several one-way stop grooves 25 are equally spaced. The proximal wall of the one-way stop groove 25 is a stop wall, and the distal wall is suitable for the elastic stop 42 to slide into the next one-way stop groove 25. By setting several one-way stop grooves 25 in the middle of the left and right direction of the clamping chamber bottom plate 21 along the clamping direction to abut against the elastic stop member 42, the transmission member 4 can be prevented from moving to the near end, which is conducive to pushing the clamping piece to clamp and making the clamping more stable.

[0083] Work process:

[0084] The following will exemplarily describe the clamping device of Embodiments 1 and 2 provided by the present invention, describing the process of the closing clamp 1 being pushed through the clamping chamber 2 and entering the jaws 5 one by one. As shown in the figure, the push clamp 3 is in the closest position at the beginning, and the transmission member 4 is placed inside the clamping chamber 2. At this time, the clamping device is not yet used. The transmission member 4 is located in the closest position inside the clamping chamber 2 so that the elastic stop 42 on the transmission member 4 engages with the one-way stop groove 25 formed at the closest end of the side top wall 24 of the clamping chamber 2 to prevent the transmission member 4 from moving towards the proximal end. The elastic push member 41 of the transmission member 4 is positioned between the first one-way push groove 341 and the second one-way push groove 342 of the push clamp 3, and the elastic push member 41 is biased downward by the push clamp 3. When the actuator (not shown) is actuated, the push clamp 3 is pushed towards the distal end. Because the push clamp 3 moves towards the distal end, the elastic push member 41 of the transmission member 4 will slide into the first one-way push groove 341 in the push clamp 3. As the pusher 3 continues to move further away, the pushing wall 35 of the first one-way pushing groove 341 abuts against the elastic pusher 41, thereby pushing the transmission member 3 and the closing clamp 1 further away. After the pusher 3 completes one push of the closing clamp 14 into the clamp, the transmission member 4 has moved a certain distance further away to push the closing clamp 1 a predetermined distance within the clamping chamber. The elastic stop 42 of the transmission member 4 has entered the one-way stop groove 25 of at least one side top wall 24 of the clamping chamber 2 to prevent the transmission member 4 from moving towards the proximal end, while the elastic pusher 41 of the transmission member 4 is still engaged by the first one-way pushing groove 341.

[0085] When the actuator is released, the push clamp 3 will move proximally to reset until it returns to its initial position. During this proximal movement, the transmission member 4 will not move proximally because the elastic stop 42 engages with the one-way stop groove 25 of the clamping chamber 2. The elastic push member 41 does not affect the proximal movement of the push clamp 4; once the push clamp 3 returns to its initial proximal position, it positions the elastic push member 41 between the second one-way push groove 342 and the third one-way push groove 343.

[0086] Repeat the above process, and the closing clamp 1 will be pushed into the clamp one by one. With each actuation of the actuator, the next one-way push groove 34 on the push clamp plate 3 will combine with the elastic pusher 41 and the elastic stop 42 on the transmission member 4 to move to the far end and enter the next one-way stop groove 25 opened in the clamping chamber 1, so that the closing clamp 14 is pushed into the clamp and released, until all the closing clamps 1 inside the clamping chamber 2 are released.

[0087] 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 clamping device, comprising a clamping chamber for accommodating a plurality of closing clamps, a transmission member at least partially located within the clamping chamber, and a push clamp piece partially inserted into the clamping chamber; characterized in that, The distal end of the push clamp is provided with a push clamp head, which is a V-shaped / arc-shaped member with the same shape as the closed tail of the closing clamp. The push clamp head has a pushing surface that matches the closed tail of the closing clamp, so that the push clamp head can at least partially wrap the closed tail of the closing clamp. The pushing surface is inclined in the width direction of the push clamp head, so that the push clamp head can fit against the closed tail of the closing clamp to achieve surface-to-surface contact. The push clamp head can abut against the farthest closing clamp among the plurality of closing clamps, so as to push the farthest closing clamp into the jaws when the push clamp moves toward the far end of the clamping chamber. The distal end of the transmission member abuts against the nearest closed clamp among the plurality of closed clamps, and the transmission member and the push clamp form a unidirectional transmission connection in which the push clamp moves toward the distal end of the clamping chamber, thereby driving the transmission member to move in the same direction to push the plurality of closed clamps to move in the same direction. The transmission component is provided with a first stop structure, and the top of the clamping chamber is provided with a second stop structure corresponding to the first stop structure. The first stop structure and the second stop structure cooperate to prevent the transmission component from moving towards the near end of the clamping chamber when the push clamping piece moves and resets towards the near end of the clamping chamber.

2. The clamping device according to claim 1, characterized in that, One of the first stop structure and the second stop structure is an elastic stop, and the other is a plurality of unidirectional stop grooves arranged along the proximal direction; One of the two end walls of the one-way stop groove is a stop wall, and the other is adapted to slide relative to the elastic stop so that the elastic stop engages with the next one-way stop groove. In its natural state, the elastic stop is located in one of the one-way stop grooves. When the pusher moves toward the far end of the clamping chamber, the elastic stop slides relative to the one-way stop groove until they disengage and the elastic stop engages with the next one-way stop groove. As the pusher plate moves toward the proximal end of the clamping chamber, the stop wall of the one-way stop groove abuts against the elastic stop member to stop it.

3. The clamping device according to claim 2, characterized in that, The elastic stop is a stop spring plate disposed on the transmission member, and the stop spring plate is tilted toward at least one side of the top of the clamping chamber; The plurality of one-way stop grooves are equally spaced on at least one side of the top of the clamping chamber, and the stop wall of the one-way stop groove is used to abut against the raised end of the stop spring. When the pusher clip moves toward the far end of the clamping chamber, the stop spring disengages from the one-way stop groove it is in and enters the next one-way stop groove; When the pusher clip moves toward the near end of the clamping chamber to reset, the raised end of the stop spring abuts against the stop wall of one of the one-way stop grooves, thus stopping the transmission component.

4. The clamping device according to claim 3, characterized in that, The stop spring protrudes horizontally from the top of the transmission component; The one-way stop groove is provided on the side wall of the clamping chamber, and the proximal end wall of the one-way stop groove is the stop wall.

5. The clamping device according to claim 1, characterized in that, The transmission component is further provided with a first transmission structure, and the push clamp is provided with a second transmission structure. The first transmission structure and the second transmission structure form the unidirectional transmission connection.

6. The clamping device according to claim 5, characterized in that, The first transmission structure is an elastic pusher, and the second transmission structure is a plurality of unidirectional push grooves arranged along the near and far directions; The proximal wall of the unidirectional push groove is a pushing wall, and the distal wall of the unidirectional push groove is an inclined wall that slopes towards the distal end. In its natural state, the elastic pusher engages between adjacent one-way push grooves. When the pusher clip moves toward the far end of the clamping chamber, the pushing wall of the one-way push groove and the elastic pusher form a co-directional pushing transmission. When the pusher clip moves toward the near end of the clamping chamber, the elastic pusher slides along the far end wall of the one-way push groove until the two disengage and re-engage between the next adjacent one-way push groove.

7. The clamping device according to claim 6, characterized in that, The elastic pusher is a pusher piece disposed on the transmission member, and the pusher piece is tilted toward the pusher piece in a direction opposite to the feeding direction; The plurality of unidirectional push grooves are equally spaced on the push clamp piece, and the proximal end wall of the unidirectional push groove is used to abut against the raised end of the spring piece; When the pusher plate moves toward the far end of the clamping chamber, the raised end of the pusher spring abuts against the proximal wall of one of the one-way push grooves on the pusher plate. By pushing the pusher spring to move, the transmission member pushes the nearest closed clamp toward the far end of the clamping chamber. When the pusher clip moves toward the proximal end of the clamping chamber to reset, the pusher spring disengages from the one-way push groove in which it is located.

8. The clamping device according to claim 7, characterized in that, The pushing spring extends obliquely from the transmission component toward the top of the clamping chamber; The unidirectional push groove is located at the bottom of the push clamp.

9. The clamping device according to claim 1, characterized in that, The closing clamp includes a U-shaped body; The distal end of the transmission component is provided with a groove, the groove wall of which is an inclined surface that matches the closed tail of the U-shaped body, or the groove wall is U-shaped.

10. A clip applier, comprising: Includes the clamping device as described in any one of claims 1 to 9.

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