A jaw adjustment mechanism and a stapler

Abstract

The present invention relates to a jaw adjusting mechanism, which includes an operating handle, an adjusting component and a positioning rod. The operating handle is connected to the adjusting component, and the adjusting component drives the positioning rod to move. The adjusting component includes a base, a rotating member, a transmission member, a first linkage member, a second linkage member and a sliding sleeve. The operating handle is arranged on the base and connected to the rotating member, and the rotating member is eccentrically arranged on the base. The first linkage member is arranged on the side of the contact end of the positioning rod and is eccentrically connected to the base. The transmission member is arranged in the base and pivotally connected to the second linkage member. The contact end of the first linkage member and the transmission member are respectively arranged on both sides of the rotating member. The second linkage member is arranged opposite to the first linkage member and connected to the sliding sleeve. A jaw adjusting mechanism and a stapler of the present invention can make the jaw device turn more stably, have higher transmission efficiency, and will not lose the angle during rotation.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a jaw adjusting mechanism and a stapler. Background Art

[0002] A stapler is a device used in medicine to replace manual suturing. Its main working principle is to use titanium staples to sever or anastomose tissues. The jaw device of a stapler is a device for placing a staple cartridge for suturing. To facilitate doctors in suturing, the jaw device can be adjusted according to the suturing position. For example, patents with application numbers CN201610105017.2, CN202021701710.4, etc. disclose existing technical solutions for adjusting the jaw device. However, in the above technical solutions, there is a large loss of angle when the jaw device is adjusted, that is, when the operating handle rotates a certain angle, the angle of rotation of the jaw device is less than the angle of rotation of the operating handle, resulting in inaccurate adjustment during use. Summary of the Invention

[0003] In order to solve the problems of the prior art, the present invention provides a jaw adjusting mechanism and a stapler with stable rotation and no angle loss.

[0004] The specific technical solution is as follows: A jaw adjusting mechanism includes an operating handle, an adjusting component, and a positioning rod. The operating handle is connected to the adjusting component, and the adjusting component drives the positioning rod to move. The adjusting component includes a base, a rotating member, a transmission member, a first linkage member, a second linkage member, and a sliding sleeve. The operating handle is arranged on the base and connected to the rotating member. The rotating member is eccentrically arranged on the base. The first linkage member is arranged on the side of the contact end of the positioning rod and is eccentrically connected to the base. The transmission member is arranged in the base and pivotally connected to the second linkage member. The contact end of the first linkage member and the transmission member are respectively arranged on both sides of the rotating member. The second linkage member is arranged opposite to the first linkage member and connected to the sliding sleeve.

[0005] As a preferred solution, the outer end face of the first linkage member is arc-shaped and is arranged opposite to the contact end.

[0006] As a preferred solution, the transmission member includes a first matching portion and a second matching portion. The first matching portion is arranged on the side of the rotating member, and the second matching portion is arranged on the side of the linkage portion of the first linkage member.

[0007] As a preferred solution, the base is provided with a first shaft hole, and the first shaft hole is eccentrically arranged. The rotating shaft portion of the rotating member is arranged in the first shaft hole.

[0008] As a preferred solution, the base is provided with a second shaft hole, and the second shaft hole is eccentrically arranged. The rotating shaft portion of the first linkage member is arranged in the second shaft hole.

[0009] As a preferred solution, the second linkage member is provided with a convex post, and the convex post is inserted into the base.

[0010] As a preferred solution, the second linkage member includes a bottom plate and a convex portion, and the first linkage member is arranged on the bottom plate and adjacent to the convex portion.

[0011] As a preferred solution, the sliding sleeve is arranged on the shaft rod, and a connecting hole is provided on one side of the sliding sleeve, and the driving rod is connected to the sliding sleeve through the connecting hole.

[0012] As a preferred solution, the driving rod is connected to the jaw device, and the positioning rod is engaged with the lock head.

[0013] A stapler includes a main body, a jaw device and a jaw adjusting mechanism. The jaw adjusting mechanism is arranged on the main body, and the jaw device is connected to the jaw adjusting mechanism.

[0014] Technical effects of the present invention: A jaw adjusting mechanism and a stapler of the present invention can make the jaw device turn more stably, have higher transmission efficiency, and the angle will not be lost during rotation. Description of the drawings

[0015] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic diagram of the stapler according to the embodiment of the present invention.

[0017] Figure 2 It is a schematic diagram of the adjusting assembly according to the embodiment of the present invention.

[0018] Figure 3 It is a schematic diagram of the first linkage member and the second linkage member according to the embodiment of the present invention.

[0019] Figure 4 It is a schematic diagram of the transmission member according to the embodiment of the present invention.

[0020] Figure 5 It is a schematic diagram of the jaw device according to the embodiment of the present invention.

[0021] Figure 6 It is a schematic diagram of the first linkage member according to the embodiment of the present invention.

[0022] Figure 7 It is a schematic diagram of the second linkage member according to the embodiment of the present invention.

[0023] Figure 8It is a schematic diagram of the sliding sleeve according to an embodiment of the present invention. Detailed implementation manners

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0027] The following will describe in detail the specific implementation manners of the present invention with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0028] As Figures 1 to 8As shown in the figure, a jaw adjusting mechanism of this embodiment includes an operating handle 1, an adjusting component 2 and a positioning rod 3. The operating handle 1 is connected to the adjusting component 2, and the adjusting component 2 drives the positioning rod 3 to move. The adjusting component 2 includes a base 21, a rotating member 22, a transmission member 23, a first linkage member 24, a second linkage member 25 and a sliding sleeve 26. The operating handle 1 is arranged on the base 21 and connected to the rotating member 22, and the rotating member 22 is eccentrically arranged on the base 21. The first linkage member 24 is arranged on the side of the triggering end 31 of the positioning rod 3, and the first linkage member 24 is eccentrically connected to the base 21. The transmission member 23 is arranged inside the base 21 and pivotally connected to the second linkage member 25. The contact end 241 of the first linkage member 24 and the transmission member 23 are respectively arranged on both sides of the rotating member 22. The second linkage member 25 is arranged opposite to the first linkage member 24 and connected to the sliding sleeve 26. In the above technical solution, when the user operates the operating handle 1, it can drive the rotating member 22 to rotate. The operating handle 1 can rotate clockwise or counterclockwise. When the operating handle 1 rotates clockwise, the rotating member 22 moves eccentrically with the operating handle 1, and the rotating member 22 presses against the first linkage member 24, causing the first linkage member 24 to rotate counterclockwise synchronously. The first linkage member 24 drives the triggering end 31 to slide backward, so that the positioning rod 3 retracts, realizing the unlocking of the jaw device 10. At this time, the jaw device 10 is in a rotatable state. Continuing to rotate the operating handle 1 can make the first linkage member 24 contact the second linkage member 25. At this time, the first and second linkage members rotate synchronously. At this time, the second linkage member 25 drives the sliding sleeve 26 to retract, so as to drive the jaw device 10 to rotate clockwise through the sliding sleeve 26. When the operating handle 1 rotates counterclockwise, the rotating member 22 moves eccentrically with the operating handle 1, and the rotating member 22 presses against the transmission member 23. The transmission member 23 rotates, and the transmission member 23 drives the first linkage member 24 to rotate counterclockwise. The first linkage member 24 drives the triggering end 31 to slide backward, so that the positioning rod 3 retracts. Continuing to rotate the operating handle 1 makes the first and second linkage members rotate synchronously, so that the second linkage member 25 drives the sliding sleeve 26 to advance, making the jaw device rotate counterclockwise. Through the above technical solution, the jaw device can turn more stably, with higher transmission efficiency and no angle loss during rotation.

[0029] In this embodiment, the outer end face 242 of the first linkage member 24 is arc-shaped, and the outer end face 242 is arranged opposite to the triggering end 31. Thus, when the first linkage member 24 rotates eccentrically, it can push the triggering end 31 to retract through the outer end face 242. The transmission member 23 includes a first matching portion 231 and a second matching portion 232. The first matching portion 231 is arranged on the side of the rotating member 22, and the second matching portion 232 is arranged on the side of the linkage portion 243 of the first linkage member 24. In the above technical solution, when the rotating member 22 contacts the first matching portion 231, it drives the transmission member 23 to rotate, and then the second matching portion 232 drives the first linkage member 24 to rotate through the linkage portion 243.

[0030] In this embodiment, the base 21 is provided with a first shaft hole 211 which is eccentrically arranged. The rotating shaft portion 221 of the rotating member 22 is arranged in the first shaft hole 211, so that the rotating member 22 can rotate eccentrically relative to the base 21. The base 21 is provided with a second shaft hole 212 which is eccentrically arranged. The rotating shaft portion 242 of the first linkage member 24 is arranged in the second shaft hole 212, so that the first linkage member 24 can rotate eccentrically relative to the base 21. The second linkage member 25 is provided with a convex column 251 which is inserted into the base 21, so that the second linkage member 25 is fixedly connected to the base 21. The second linkage member 25 includes a bottom plate 252 and a convex portion 253. The first linkage member 24 is arranged on the bottom plate 252 and is adjacent to the convex portion 253. The sliding sleeve 26 is arranged on the shaft rod 4. A connecting hole 261 is provided on one side of the sliding sleeve 26. The driving rod 5 is connected to the sliding sleeve 26 through the connecting hole 261, so that the sliding of the sliding sleeve 26 can drive the driving rod 5 to move back and forth. In this embodiment, only one driving rod is provided, and the angle adjustment is realized through one driving rod. The driving rod 5 is connected to the jaw device 10. The positioning rod 3 is engaged with the lock head 6. The jaw device 10 is pivotally connected to the shaft rod 4. The driving rod 5 is located on one side of the shaft rod 4. When the positioning rod 3 is disengaged from the lock head 6, the clockwise or counterclockwise rotation of the jaw device can be realized through the forward and backward movement of the driving rod, so as to adjust the angle of the jaw device. The rotating member 22 and the operating handle 1 are connected through a mating portion 222, so that the operating handle 1 can drive the rotating member 22 to rotate.

[0031] A stapler according to this embodiment includes a main body 7, a jaw device 10 and a jaw adjustment mechanism. The jaw adjustment mechanism is arranged on the main body 7. The jaw device 10 is connected to the jaw adjustment mechanism. The jaw adjustment mechanism is the jaw adjustment mechanism of the above embodiment.

[0032] A jaw adjustment mechanism and a stapler according to this embodiment can make the turning of the jaw device more stable, have higher transmission efficiency, and the angle will not be lost during rotation.

[0033] The above has described a jaw adjustment mechanism and a stapler of the present invention. However, the present invention is not limited to the above specific embodiments. Various deformations or changes can be made as long as the scope of the claims is not exceeded. The present invention includes various deformations and changes within the scope of the claims.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A jaw adjusting mechanism, comprising an operating handle, an adjusting component and a positioning rod, the operating handle is connected to the adjusting component, and the adjusting component drives the positioning rod to move, characterized in that, The adjusting assembly includes a base, a rotating member, a transmission member, a first linkage member, a second linkage member and a sliding sleeve. The operating handle is arranged on the base and connected to the rotating member. The rotating member is eccentrically arranged on the base. The first linkage member is arranged on the side of the triggering end of the positioning rod and is eccentrically connected to the base. The transmission member is arranged in the base and pivotally connected to the second linkage member. The contact end of the first linkage member and the transmission member are respectively arranged on both sides of the rotating member. The second linkage member is arranged opposite to the first linkage member and connected to the sliding sleeve.

2. The jaw adjustment mechanism according to claim 1, characterized in that, The outer end face of the first linkage member is arc-shaped and is arranged opposite to the triggering end.

3. The jaw adjusting mechanism according to claim 1, characterized in that, The transmission member includes a first mating portion and a second mating portion. The first mating portion is arranged on the side of the rotating member, and the second mating portion is arranged on the side of the linkage portion of the first linkage member.

4. The jaw adjusting mechanism according to claim 1, characterized in that, The base is provided with a first shaft hole which is eccentrically arranged, and the shaft portion of the rotating member is arranged in the first shaft hole.

5. The jaw adjustment mechanism according to claim 1, characterized in that, The base is provided with a second shaft hole which is eccentrically arranged, and the shaft portion of the first linkage member is arranged in the second shaft hole.

6. The jaw adjustment mechanism according to claim 1, characterized in that, The second linkage member is provided with a convex post which is inserted into the base.

7. The jaw adjustment mechanism according to claim 1, wherein, The second linkage member includes a bottom plate and a convex portion. The first linkage member is arranged on the bottom plate and adjacent to the convex portion.

8. The jaw adjusting mechanism according to claim 1, characterized in that The sliding sleeve is arranged on the shaft rod. A connecting hole is arranged on one side of the sliding sleeve, and the driving rod is connected to the sliding sleeve through the connecting hole.

9. The jaw adjustment mechanism according to claim 8, characterized in that The driving rod is connected to the jaw device, and the positioning rod is matingly connected to the lock head.

10. A stapler, comprising a main body, a jaw device and a jaw adjusting mechanism, the jaw adjusting mechanism is arranged on the main body, and the jaw device is connected to the jaw adjusting mechanism, characterized in that, The jaw adjusting mechanism is the jaw adjusting mechanism according to any one of claims 1 to 9.

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