A clip applier jaw structure

Abstract

The utility model belongs to the technical field of medical equipment, especially relate to a clip applier jaw structure. The utility model provides a kind of clip applier jaw structure for the problem that fatigue deformation is prone to in prior art using elastic jaw to open automatically, including mounting seat, upper jaw and lower jaw;Mounting seat is equipped with rotating fulcrum, and upper jaw and lower jaw rotate around rotating fulcrum;It further includes the slider of the sliding connection with mounting seat, and the slider is located the other side of rotating fulcrum relative to upper jaw and lower jaw, and the slider extrudes upper jaw and lower jaw tail when horizontal motion generates opposite vertical direction's component force, so that upper jaw and lower jaw open mutually or close to each other.The utility model drives the tail of upper jaw and lower jaw to generate opposite up-down movement tendency by the protrusion on slider driven by push rod, so that jaw opens and closes, avoid the structure fatigue and other problems generated by traditional clip applier jaw to open automatically.

Description

Technical Field

[0001] This utility model belongs to the field of medical equipment technology, and in particular relates to a clamp head structure for applying clamps. Background Technology

[0002] The main body of existing automatic clamping pliers is often made of an elastic material. It opens and closes by pressing the pliers together and then using its own elasticity to open (because the clamp needs to be opened to a suitable angle to successfully release the clamp). Over time, this can easily lead to structural fatigue and deformation, making it easy for the clamp to fail to open and affecting the release of the clamp. It can also easily cause problems such as the clamp closing and trigger angle being out of sync due to deformation.

[0003] For example, a Chinese invention patent discloses a repeating clamp (application number: CN202111376487.X). This invention includes a clamp housing, a clamp head push rod connected to the clamp housing with a clamp head at one end, and moving the clamp head push rod opens or closes the clamp head. The clamp housing has a spring clip mounting structure, a first feeding mechanism, and a second feeding mechanism. The drive handle pushes a propulsion structure into a first feeding space via the first feeding mechanism, and the drive handle pushes the propulsion structure into a second feeding space via the second feeding mechanism. This invention effectively reduces the automatic opening motion of the tissue clip when it is ejected, and then uses the second feeding mechanism to slowly clamp it until it is completely closed. Therefore, it is more suitable for tissue clips that automatically open upon ejection.

[0004] Although the invention is more suitable for tissue clips that automatically spring open when ejected by the distribution feeding mechanism, the forceps head still opens automatically, which is prone to a series of problems such as aging or deformation. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems by providing a clamp head structure for clamping pliers.

[0006] This utility model includes a mounting base, an upper jaw, and a lower jaw. The mounting base is provided with a rotation fulcrum, and the upper jaw and lower jaw rotate around the rotation fulcrum with their heads and tails located on both sides of the rotation fulcrum. It also includes a slider that is slidably connected to the mounting base and whose tails are located on the same side of the rotation fulcrum. When the slider moves horizontally, it squeezes the tails of the upper jaw and lower jaw, generating a vertical pressure force that causes the upper jaw and lower jaw to open or close together. Preferably, the upper jaw and the lower jaw are provided with inclined grooves at their tails, the slider is provided with a protrusion, the protrusion is held by the groove, and when the protrusion moves horizontally, it presses against the groove to generate a vertical component force. Preferably, the upper and lower jaws are provided with rotating holes, and the mounting base is provided with a pin to form a rotating fulcrum, the pin passing through the rotating hole. Preferably, the slider has a slot at the end away from the upper and lower jaws, and also includes a push rod inserted into the slot; the push rod is fixedly connected to the slider in the slot.

[0007] Preferably, one protrusion is provided on each side of the slider, and the inclination angles of the upper and lower jaws' grooves are always complementary. Preferably, the pin can be a through mounting base or a symmetrical fixation on both sides. Preferably, the slider is provided with a limiting groove, so that when the upper and lower jaws rotate to a certain angle, they interfere with the limiting groove. Preferably, the mounting base has a sliding surface and an end, and further includes a mounting frame, wherein the mounting frame and the end are located at both ends of the sliding surface and form a sliding mounting space above the sliding surface.

[0008] Compared with existing technologies, the advantages of this utility model are: This invention uses a push rod to drive a slider, which in turn uses the slider's protrusion to rotate the upper and lower jaws, which are hinged to the mounting base, to open and close the pliers. This avoids the structural fatigue and deformation problems caused by the frequent opening and closing of traditional pliers due to their own elasticity. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall design of this utility model; Figure 2 This is an exploded view of the present invention; Figure 3 This is a schematic diagram from another perspective of the present invention; Figure 4 This is a schematic diagram of the mounting bracket; Figure 5 This is another schematic diagram of the present utility model; In the diagram: Mounting base 1, upper clamp head 2, lower clamp head 3, rotating fulcrum 11, slider 4, sliding groove 231, protrusion 41, rotating hole 232, pin 111, slot 42, push rod 5, limiting groove 43, sliding surface 12, end 13, mounting frame 6, sliding mounting space 7. Detailed Implementation

[0010] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0011] This utility model relates to a clamp head structure, such as... Figure 1-5As shown, it includes a mounting base 1, an upper jaw 2, and a lower jaw 3; the mounting base 1 is provided with a rotation fulcrum 11, the upper jaw 2 and the lower jaw 3 rotate around the rotation fulcrum 11, and the head and tail of the upper jaw 2 and the lower jaw 3 are located on both sides of the rotation fulcrum 11; it also includes a slider 4 that is slidably connected to the mounting base 1 and whose tails of the upper jaw 2 and the lower jaw 3 are located on the same side of the rotation fulcrum 11, the slider 4 compresses the tails of the upper jaw 2 and the lower jaw 3 when moving horizontally, generating a vertical compressive force that causes the upper jaw 2 and the lower jaw 3 to open or close together.

[0012] In this invention, the upper jaw 2 and the lower jaw 3 are hinged and fixed on the mounting base 1, with the hinge point serving as the rotation fulcrum 11. The horizontal movement of the slider 4 presses against the tails of the upper jaw 2 and the lower jaw 3, generating opposing vertical forces that cause the upper jaw 2 and the lower jaw 3 to rotate relative to each other, thus completing the opening and closing process.

[0013] Preferably, the slider 4 drives the pliers head to rotate as follows: the upper pliers head 2 and the lower pliers head 3 are provided with inclined grooves 231 at their tails, the slider 4 is provided with a protrusion 41, the protrusion 41 is held by the groove 231, and when the protrusion 41 moves horizontally, it presses against the groove 231 and generates a vertical component force, thereby driving the upper pliers head 2 and the lower pliers head 3 to rotate.

[0014] The upper jaw 2 and the lower jaw 3 are provided with rotating holes 232, and the mounting base 1 is provided with a pin 111 to form a rotating fulcrum 11, and the pin 111 passes through the rotating hole 231.

[0015] Preferred, such as Figure 1 , 2 As shown, the driving scheme of the slider 4 is as follows: the end of the slider 4 away from the upper jaw 2 and the lower jaw 3 is provided with a slot 42. This utility model also includes a push rod 5, which is inserted into the slot 42 and is fixedly connected to the slider 4 in the slot 42. The fixed connection can be achieved by welding, plugging, snap-fit ​​connection, etc.

[0016] It is easy to see that, because the upper and lower jaws need to move in opposite directions to open and close, one protrusion 41 is provided on each side of the slider 4, and the inclination angles of the grooves 231 of the upper jaw 2 and the lower jaw 3 are always complementary. It is easy to see that, as... Figure 2 , 3 As shown, the sliding grooves 231 at the tails of the upper jaw 2 and the lower jaw 3 appear only on one side of the mounting base 1 (that is, the upper jaw 2 and the lower jaw 3 each have only one tail with a sliding groove 231 and do not appear on the same side of the mounting base at the same time) to form a compact structure to prevent interference during the rotation of the upper jaw 2 and the lower jaw 3.

[0017] The pin 111 can be configured to pass through the mounting base 1 or be fixed symmetrically on the left and right (i.e., a hole for inserting the pin 111 is reserved on each side of the mounting base). The pin 111 directly passes through the mounting base 1, that is, the rotating hole 231 passes through the mounting base, which is more stable and convenient.

[0018] Preferred, such as Figure 1 , 3 As shown, the slider 4 is provided with a limiting groove 43. When the upper jaw 2 and the lower jaw 3 are rotated to a certain angle, they interfere with the limiting groove 43 to prevent the upper jaw 2 and the lower jaw 3 from being over-opened.

[0019] Specifically, such as Figure 4 , 5 As shown, most continuous-fire clamps include a mounting frame 6. The mounting frame 6 houses the clamping chamber, and the exterior is used to house the transmission structure (such as the push rod 5 in this utility model). The mounting base 1 of this utility model is sleeved on the mounting frame 6. The mounting base 11 has a sliding surface 12 and an end 13. The mounting frame 6 and the end 13 are located at both ends of the sliding surface 12, forming a sliding mounting space 7 above the sliding surface 12. The limiting slider 4 moves within the sliding mounting space 7.

[0020] The working principle of this embodiment is as follows: the mounting base 11 is sleeved on the mounting frame 6, and the upper jaw 2 and lower jaw 3 are hinged to the mounting base 1 by a pin 111. The hinge point constitutes the so-called rotation fulcrum 11. The end 13 of the mounting base and the mounting frame 6 form a sliding mounting space 7, and the slider 4 slides in contact with the sliding surface 12 within the sliding mounting space 7. Referring to the prior art, the repeating clamp is equipped with an operating handle (trigger). The operating handle pushes the slider 4 by a push rod 5 fixedly connected to the slider 4 in its limiting groove 43. The symmetrically distributed protrusions 41 of the slider 4 can drive the upper jaw 2 and lower jaw 3 to generate a split motion tendency in two opposite directions, thereby driving the upper jaw 2 and lower jaw 3 to open and close. The limiting of the sliding mounting space 7 and the real-time traction push rod 5 during the trigger movement can accurately control the opening and closing range of the upper jaw 2 and lower jaw 3 to facilitate smooth clamping.

[0021] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0022] Although this document frequently uses terms such as mounting base 1, upper clamp head 2, lower clamp head 3, rotating fulcrum 11, slider 4, sliding groove 231, protrusion 41, rotating hole 232, pin 111, slot 42, push rod 5, limiting groove 43, sliding surface 12, end 13, mounting frame 6, and sliding mounting space 7, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A clamping pliers head structure, comprising a mounting base (1), an upper clamping head (2), and a lower clamping head (3); characterized in that: The mounting base (1) is provided with a rotation fulcrum (11). The upper jaw (2) and lower jaw (3) rotate around the rotation fulcrum (11) and the head and tail of the upper jaw (2) and lower jaw (3) are located on both sides of the rotation fulcrum (11). It also includes a slider (4) that is slidably connected to the mounting base (1) and the tails of the upper jaw (2) and lower jaw (3) are located on the same side of the rotation fulcrum (11). When the slider (4) moves horizontally, it squeezes the tails of the upper jaw (2) and lower jaw (3) to generate a vertical pressure force, causing the upper jaw (2) and lower jaw (3) to open or close to each other.

2. The clamp head structure as described in claim 1, characterized in that: The upper jaw (2) and lower jaw (3) are provided with inclined grooves (231) at their tails. The slider (4) is provided with a protrusion (41). The protrusion (41) is held by the groove (231). When the protrusion (41) moves horizontally, it presses the groove (231) to generate a vertical component force.

3. The clamp head structure as described in claim 2, characterized in that: The upper jaw (2) and lower jaw (3) are provided with rotating holes (232), and the mounting base (1) is provided with a pin (111) forming a rotating fulcrum (11), and the pin (111) passes through the rotating hole (231).

4. The clamp head structure as described in claim 1, characterized in that: The slider (4) has a slot (42) at the end away from the upper jaw (2) and lower jaw (3), and also includes a push rod (5), which is inserted into the slot (42) and is fixedly connected to the slider (4) in the slot (42).

5. The clamp head structure as described in claim 2, characterized in that: One protrusion (41) is provided on each side of the slider (4), and the inclination angles of the grooves (231) of the upper clamp head (2) and the lower clamp head (3) are always complementary.

6. The clamp head structure as described in claim 3, characterized in that: The pin (111) can be a through mounting base (1) or fixed symmetrically on both sides.

7. The clamp head structure as described in claim 1, characterized in that: The slider (4) is provided with a limiting groove (43). When the upper clamp head (2) and the lower clamp head (3) rotate to a certain angle, they interfere with the limiting groove (43).

8. The clamp head structure as described in claim 7, characterized in that: The mounting base (1) is provided with a sliding surface (12) and an end (13), and also includes a mounting frame (6). The mounting base (1) is sleeved on the mounting frame (6). The mounting frame (6) and the end (13) are located at both ends of the sliding surface (12) and form a sliding mounting space (7) above the sliding surface (12). The slider (4) slides in the sliding mounting space (7).

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