Press unlocking mechanism and surgical instrument

Abstract

The utility model provides a pressing unlocking mechanism and a surgical instrument. The pressing unlocking mechanism comprises a locking assembly and a knob assembly. The locking assembly comprises a locking piece, a reset piece and a rotating disc. The rotating disc is provided with a wedge-shaped groove, and the wedge-shaped groove is provided with a locking position and an unlocking position. When the locking piece is initially located in the locking position, the reset piece applies an acting force to the locking piece, and the acting force enables the locking piece to be kept in the locking position; the knob assembly comprises an operation part and a reset piece. The operation part is arranged above the rotating disc, and the reset piece is arranged between the operation part and the rotating disc; the operating part is provided with an unlocking piece, and when the operating part is pressed, the unlocking piece can be pressed into the space on one side of the locking piece, and the locking piece is pushed into the unlocking position from the locking position. According to the utility model, the operating part with the unlocking part is arranged, and the locking part can be pushed into the unlocking position from the locking position by pressing the operating part, so that quick and convenient unlocking can be realized through a simple pressing action.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a press-to-unlock mechanism and a surgical instrument. Background Technology

[0002] Surgical staplers are commonly used surgical instruments in medicine as an alternative to manual suturing. Their main working principle involves using a scalpel to sever tissue and titanium staples to anastomose it. Depending on the body part being treated, staplers can be categorized into various types. For surgical staplers, the working principle involves inserting a cannula of a precisely positioned trocar into the patient's body at the surgical site. This creates a longitudinal incision in the tissue, and staples are applied to the opposite side of the incision, thereby severing and anastomosing the tissue.

[0003] The part of the stapler that enters the patient's body through a cannula is its distal working head. During the surgery, under endoscopic guidance, the positioning and precise locking of the distal working head are adjusted using a knob assembly. However, the distal working head of the stapler is initially locked, so it needs to be unlocked before proceeding with subsequent operations. Therefore, how to easily unlock the head is an important problem that needs to be solved during the development of the stapler. Utility Model Content

[0004] The present invention aims to provide a press-to-unlock mechanism and a surgical instrument to overcome the shortcomings of the prior art.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0006] A press-to-unlock mechanism is applicable to surgical instruments to unlock the working head of the surgical instrument; the press-to-unlock mechanism includes a locking assembly and a knob assembly;

[0007] The locking assembly includes: a locking member, a first reset member, and a rotating disk; the rotating disk has a wedge-shaped groove, the wedge-shaped groove having a locking position and an unlocking position; the locking member is initially located in the locking position, and the first reset member applies a force to the locking member to keep it in the locking position;

[0008] The knob assembly includes: an operating part and a second reset member; the operating part is disposed above the rotating disk, and the second reset member is disposed between the operating part and the rotating disk; the operating part has an unlocking member, and when the operating part is pressed, its unlocking member can be pressed into the space on one side of the locking member, and the locking member is pushed from the locking position to the unlocking position.

[0009] As an improvement to the press-to-unlock mechanism of this utility model, the operating part includes a knob body; the unlocking element is a cylinder disposed on the lower surface of the knob body; the cylinder initially extends to the upper position of one side of the locking element.

[0010] As an improvement to the press-to-unlock mechanism of this utility model, the end face of the cylinder is configured to be pressed into one side of the locking member and push the first inclined surface of the locking member.

[0011] As an improvement to the press-to-unlock mechanism of this utility model, the operating part includes: a knob body, an operating component, and an unlocking floating block;

[0012] The unlocking floating block has a second inclined surface on one side and the unlocking component on the other side;

[0013] The operating member has a third inclined surface that abuts against the second inclined surface; when the operating member is activated, it can push the unlocking member of the unlocking floating block into the space on one side of the locking member through the cooperation of the third inclined surface and the second inclined surface, and push the locking member from the locking position into the unlocking position.

[0014] As an improvement to the press-to-unlock mechanism of this utility model, the operating component includes a first wing plate;

[0015] One end of the first wing plate is pivotally connected to the knob body, and the other end abuts against the second inclined surface of the unlocking floating block through the third inclined surface; when the first wing plate pivots and swings, it can drive the unlocking floating block to move downward through the cooperation of the third inclined surface and the second inclined surface.

[0016] As an improvement to the press-to-unlock mechanism of this utility model, the operating component further includes a second wing plate; one end of the first wing plate and the second wing plate are pivotally connected to the knob, and the first wing plate and the second wing plate initially have an included angle;

[0017] One side of the unlocking floating block has an arched surface, and the two sides of the arched surface form the second inclined surface; the other end of the first wing plate abuts against the second inclined surface on one side through its third inclined surface; the other end of the second wing plate abuts against the second inclined surface on one side through its third inclined surface.

[0018] When the first wing plate and the second wing plate swing and come together, the third inclined surface and the second inclined surface can work together to move the unlocking floating block downward.

[0019] As an improvement to the press-to-unlock mechanism of this utility model, one end of the first wing plate and the second wing plate are coaxially pivotally connected to the knob body.

[0020] As an improvement to the press-to-unlock mechanism of this utility model, any wing plate is L-shaped, with one end of the L-shaped wing plate being a pivot connection end and the other end being an operating end; a protrusion is provided below any wing plate, and the end face of the protrusion forms the third inclined surface.

[0021] As an improvement to the press-to-unlock mechanism of this utility model, the first reset component is one or a combination of a magnetic block, a spring, or a torsion spring; the rotating disk is provided with a mounting groove for receiving the first reset component.

[0022] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0023] A surgical instrument includes a press-to-unlock mechanism as described above, which enables the working head of the surgical instrument to be quickly and easily unlocked.

[0024] Compared with the prior art, the beneficial effects of this utility model are: the press-to-unlock mechanism of this utility model can be applied to surgical instruments. By setting an operating part with an unlocking component, the locking component can be pushed from the locked position to the unlocked position by pressing the operating part, so that the unlocking can be achieved quickly and conveniently by a simple pressing action, which greatly reduces the difficulty of operating surgical instruments.

[0025] Furthermore, the press-to-unlock mechanism of this invention also includes a wing plate structure. Simply moving this wing plate structure allows for quick and convenient pressing and unlocking. Moreover, the wing plate structure transmits force based on the lever principle, further reducing the required operating force, alleviating fatigue during operation, and thus facilitating the maintenance of the unlocked state of the surgical instrument. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a three-dimensional exploded view of Embodiment 1 of the press-to-unlock mechanism of this utility model;

[0028] Figure 2 for Figure 1 Enlarged perspective view of the center locking assembly and the knob assembly;

[0029] Figure 3 This is a top view of the rotating disk when the first reset component is a spring in Embodiment 1;

[0030] Figure 4 This is a top view of the rotating disk when the first reset component is a torsion spring in Embodiment 1;

[0031] Figure 5 This is a top view of the rotating disk when the first reset component is a magnetic block in Embodiment 1;

[0032] Figure 6 This is a three-dimensional exploded view of Embodiment 2 of the press-to-unlock mechanism of this utility model;

[0033] Figure 7 for Figure 5 Enlarged perspective view of the center locking assembly and the knob assembly;

[0034] Figure 8 for Figure 6 Enlarged 3D diagram of the unlocked floating block;

[0035] Figure 9 This is a three-dimensional schematic diagram of Embodiment 3 of the surgical instrument of this utility model. Figure 9 The surgical instrument shown includes the press-to-unlock mechanism described in Example 1;

[0036] Figure 10 This is a three-dimensional schematic diagram of Embodiment 3 of the surgical instrument of this utility model. Figure 10 The surgical instrument shown includes the press-to-unlock mechanism in Example 2. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] Example 1

[0039] This embodiment provides a press-to-unlock mechanism that can be applied to surgical instruments to assist in the quick and convenient unlocking of the actuators in the surgical instruments.

[0040] In this embodiment, the surgical instrument can specifically be a stapler. The following description uses a stapler as an example to explain the technical solution of the press-to-unlock mechanism in this embodiment. Furthermore, the press-to-unlock mechanism of this embodiment is also applicable to other surgical instruments that require unlocking.

[0041] When the press-to-unlock mechanism of this embodiment is applied to a stapler, by providing an operating part with an unlocking element, the locking element can be pushed from the locked position to the unlocked position by pressing the operating part. Thus, a simple pressing action can achieve quick and convenient unlocking, greatly reducing the operational difficulty of the stapler. Therefore, the unlocking problem of staplers in the prior art is solved.

[0042] like Figure 1 , 2 As shown, the press-to-unlock mechanism 100 of this embodiment includes a locking component 10 and a knob component 20.

[0043] The locking assembly 10 is used to lock the distal working head 201 of the stapler 200, so as to maintain it at a corresponding angle to facilitate the operator's medical activities. The working head 201, as referred to herein, is the mechanism at the distal position of the stapler 200 that performs the cutting and suturing function.

[0044] like Figure 3 , 4 As shown in Figure 5, the locking assembly 10 includes a locking member 11, a first reset member 12, and a rotating disk 13. The rotating disk 13 is linked to the working head 201 of the stapler 200 via two pull rods, thus locking the working head 201 of the stapler 200 when the rotating disk 13 is locked. Specifically, the rotating disk 13 has a wedge-shaped groove 131 with one side communicating with the outside. The wedge-shaped groove 131 has a locking position 132 and an unlocking position 133. The locking position 132 refers to the narrower end of the wedge-shaped groove 131, while the unlocking position 133 refers to the wider end of the wedge-shaped groove 131.

[0045] The locking member 11 is initially located in the locking position 132, which can lock the rotating disk 13. The principle is that when the locking member 11 is engaged in the narrower end of the wedge-shaped groove 131, it locks the rotating disk 13 against the inner wall of the anastomosis device 200 housing, thereby preventing the rotating disk 13 from rotating. In one embodiment, the locking member 11 can be a locking ball.

[0046] The first reset member 12 applies a force to the locking member 11 to keep it in the locked position 132, so that the working head 201 of the stapler 200 can always be locked before unlocking, so as to achieve timely locking after the angle adjustment of the working head 201.

[0047] In this embodiment, the first reset member 12 is one or a combination of a magnet, a spring, or a torsion spring. When the first reset member 12 is a spring, one end of the spring elastically abuts against the locking member 11 to press it into the locking position 132. When the first reset member 12 is a torsion spring, a pressure plate 121 can be connected to one end of the torsion spring, and the pressure plate 121 abuts against the locking member 11 to press it into the locking position 132.

[0048] Correspondingly, the rotating disk 13 is provided with a mounting groove 134 for receiving a spring or a torsion spring. When the first reset member 12 is a spring, the mounting groove 134 is a cylindrical or arc-shaped spring groove; when the first reset member 12 is a torsion spring, the mounting groove 134 is a circular groove, and the circular groove is connected to the wedge groove 131 so that the pressure plate and the locking member 11 can abut against each other.

[0049] Furthermore, when the first reset member 12 is a magnetic block, this block can be placed on one side of the locking position 132 so that the locking member 11 is held in the locking position 132 by magnetic force. Accordingly, when a magnetic block is used, the locking member 11 is a magnetic element.

[0050] The knob assembly 20 is used to unlock the locking assembly 10 by pressing. The knob assembly 20 is pivotally mounted on the housing of the stapler 200, specifically in an area suitable for manual operation.

[0051] Again Figure 2 As shown, the knob assembly 20 includes an operating part 21, a steering shaft 22, and a second reset member 23. The operating part 21 is positioned above the rotating disk 13 via the steering shaft 22. In this embodiment, the operating part 21 is the knob body, and one end of the steering shaft 22 extends through the upper cover 24 at its assembly location to be fixedly connected to the knob body. To achieve the connection between the steering shaft 22 and the knob body, the outer wall of the steering shaft 22 is in interference fit with the knob body.

[0052] In one embodiment, the outer wall of the steering shaft 22 and the knob body are fitted together by a protrusion and a groove. Specifically, one of the outer wall of the steering shaft 22 and the knob body has a protrusion, while the other has a groove that mates with the protrusion. Thus, when the knob body rotates, it drives the steering shaft 22 to rotate synchronously. Furthermore, to prevent the steering shaft 22 from separating from the knob body, the steering shaft 22 and the knob body are also connected by a radially penetrating pin. Correspondingly, a strip-shaped pin hole is provided through the steering shaft 22 and the knob body.

[0053] A disc 221 is provided at the other end of the steering shaft 22. The steering shaft 22 and the disc 221 are coaxially and perpendicularly connected, and the steering shaft 22 and the disc 221 can be an integral part. The disc 221 is further connected to the mounting groove 135 on the rotating disk 13 via a drive component 222 at its bottom. Thus, when the operator rotates the knob body, the knob body can drive the rotating disk 13 to rotate via the steering shaft 22. The rotating disk 13 further swings the working head 201 in the anastomosis device 200 via two pull rods to adjust the working angle of the working head 201.

[0054] The second reset element 23 is disposed between the knob body and the rotating disk 13 to provide an elastic force to the knob body, so that the knob body maintains a certain distance from the rotating disk 13 before being pressed. After being pressed, it can return to the initial position. In one embodiment, the second reset element 23 is a compression spring, which is fitted on the steering shaft 22 and abuts against the knob body.

[0055] Reference Figure 6 As shown, the knob body has an unlocking component 25. When the button body is pressed, the unlocking component 25 can be pressed into the space on one side of the locking component 11, and the locking component 11 is pushed from the locking position 132 into the unlocking position 133 to achieve press-to-unlock. Correspondingly, the upper cover 24 and the disc 221 of the steering shaft 22 have a groove structure to avoid the unlocking component 25.

[0056] In one embodiment, the unlocking member 25 is a cylinder disposed on the lower surface of the knob body; the cylinder initially extends to an upper position on one side of the locking member 11. Furthermore, in order to facilitate the smooth pushing of the locking member 11 into the unlocking position 133, the end face of the cylinder is configured as a first inclined surface 251, so that the end of the cylinder is more suitable for insertion into the space on one side of the locking member 11, and is pushed into the unlocking position 133 as the cylinder is inserted.

[0057] Specifically, as described above, the locking position 132 refers to the narrower end of the wedge-shaped groove 131, while the unlocking position 133 refers to the wider end of the wedge-shaped groove 131. When the locking member 11 is engaged at the narrower end of the wedge-shaped groove 131, it locks the rotating disk 13 against the inner wall of the anastomosis device 200 housing, thereby preventing the rotating disk 13 from rotating.

[0058] When the knob body is pressed, the locking member 11 is pushed from the locking position 132 to the unlocking position 133 via the unlocking member 25. After the locking member 11 enters the wider end, it can no longer abut against the side wall of the wedge groove 131, and thus will not lock the rotating disk 13. At this time, as the steering shaft 22 continues to rotate, it can drive the rotating disk 13 to rotate via the drive member 222. The rotating disk 13 further drives the working head 201 to adjust to the required position via the pull rod, thus completing one unlocking and adjustment operation of the working head 201.

[0059] In summary, the press-to-unlock mechanism of this embodiment can be applied to surgical instruments. By providing an operating part with an unlocking component, the locking component can be pushed from the locked position to the unlocked position by pressing the operating part. Thus, a simple pressing action can achieve quick and convenient unlocking, greatly reducing the difficulty of operating surgical instruments.

[0060] Example 2

[0061] This embodiment provides a press-to-unlock mechanism that can be applied to surgical instruments to assist in the quick and convenient unlocking of the actuators in the surgical instruments.

[0062] The relevant content from Embodiment 1 is incorporated into this embodiment. The difference between Embodiment 2 and Embodiment 1 is that this embodiment can quickly and conveniently achieve downward unlocking by setting a wing plate structure.

[0063] like Figure 7 , 8 As shown, in the press-to-unlock mechanism 300 of this embodiment, the operation unit 21 includes: a knob body 211, an operation member 212, and an unlocking floating block 213. The knob body 211 is used to realize the rotation function of the knob assembly 20, while the unlocking floating block 213 can move downward under the drive of the operation member 212 to realize press-to-unlock.

[0064] The unlocking floating block 213 is located between the knob body 211 and the steering shaft 217, with the steering shaft 217 passing through the unlocking floating block 213 and fixedly connected to the knob body 211. One side of the unlocking floating block 213 has a second inclined surface 2131, and the other side has an unlocking member 2132. The end face of the unlocking member 2132 is a first inclined surface 2133. In one embodiment, the top surface of the unlocking floating block 213 has a protrusion 2130, the top surface of which is an arched surface; the slope of the arched surface forms the aforementioned second inclined surface 2131.

[0065] To enable the operating component 212 to push down and unlock the unlocking floating block 213, the operating component 212 has a third inclined surface 2121 that abuts against the second inclined surface 2131. When the operating component 212 is activated, it can push the unlocking component 2132 of the unlocking floating block 213 into the space on the locking component side through the cooperation of the third inclined surface 2121 and the second inclined surface 2131, and push the locking component from the locked position to the unlocked position. The operating component 212 is a component of a certain length, with one end cooperating with the second inclined surface 2131 through its third inclined surface 2121, and the other end being the operating end. Thus, the operating component 212 transmits force based on the lever principle, further reducing the required operating force, alleviating fatigue during operation, and thus facilitating the maintenance of the unlocked state of the surgical instrument.

[0066] In one embodiment, the operating member 212 includes an L-shaped first wing plate 214. In this case, one end of the L-shaped wing plate is a pivot connection end, and the other end is an operating end; a protrusion 216 is provided below either wing plate, and the end face of the protrusion 216 forms a third inclined surface 2121. Specifically, one end of the first wing plate 214 is pivotally connected to the knob body 211, and the other end abuts against the second inclined surface 2131 of the unlocking floating block 213 through the third inclined surface 2121 of the protrusion 216. Thus, when the first wing plate 214 pivots, the unlocking floating block 213 can be moved downwards through the cooperation of the third inclined surface 2121 and the second inclined surface 2131.

[0067] Accordingly, to facilitate the pivoting connection of the first wing plate 214 and its swinging motion when pressed down to unlock, the knob body 211 has a flared mounting cavity 2111. At this time, one end of the first wing plate 214 is pivotally connected to the mounting cavity 2111; the bottom surface of the mounting cavity 2111 is also provided with an arc-shaped groove 2112 to avoid the protrusion 216. Simultaneously, the bottom surface of the mounting cavity 2111 can also provide some support and guidance for the swinging motion of the first wing plate 214, thus facilitating its swinging motion.

[0068] Based on the same technical concept, the operating element 212 can also be configured as a double-wing structure. Thus, in another embodiment of this example, the operating element 212 further includes a second wing 215; one end of the first wing 214 and the second wing 215 is pivotally connected to the knob, and the first wing 214 and the second wing 215 initially have an included angle.

[0069] As described above, one side of the unlocking floating block 213 has an arched surface. Correspondingly, second inclined surfaces 2131 are formed on both sides of the arched surface. At this time, the other end of the first wing plate 214 abuts against the second inclined surface 2131 on one side through its third inclined surface 2121; the other end of the second wing plate 215 abuts against the second inclined surface 2131 on one side through its third inclined surface 2121. One end of the first wing plate 214 and the second wing plate 215 are pivotally connected to the knob body 211 coaxially.

[0070] Therefore, when the operating component 212 of the double-wing plate structure is activated, it is only necessary to pinch the first wing plate 214 and the second wing plate 215 to bring them together, so that the unlocking floating block 213 can be moved downward conveniently and quickly through the cooperation of the third inclined surface 2121 and the second inclined surface 2131.

[0071] Accordingly, to facilitate the pivotal connection of the first wing plate 214 and the second wing plate 215 and their swinging motion when pressed down to unlock, the knob body 211 has a flared assembly cavity 2111. At this time, one end of the first wing plate 214 and the second wing plate 215 are coaxially pivotally connected to the assembly cavity 2111; the bottom surface of the assembly cavity 2111 is also provided with an arc-shaped groove 2112 to avoid the protrusion 216. Simultaneously, the bottom surface of the assembly cavity 2111 can also provide some support and guidance for the swinging motion of the first wing plate 214 and the second wing plate 215, facilitating their swinging and engaging motion.

[0072] In summary, the press-to-unlock mechanism of this embodiment also includes a wing plate structure. Simply moving this wing plate structure allows for quick and convenient press-to-unlock operation. Furthermore, the wing plate structure transmits force based on the lever principle, further reducing the required operating force, alleviating fatigue during operation, and thus facilitating the maintenance of the unlocked state of the surgical instrument.

[0073] Example 3

[0074] like Figure 9 , 10 As shown, this embodiment provides a surgical instrument 400 and 500, which can specifically be a stapler. The stapler includes a press-unlock mechanism 100 and 300 as described in Embodiment 1 or 2.

[0075] When the press-to-unlock mechanism of this embodiment is applied to a stapler, the press-to-unlock mechanism is provided with an operating part having an unlocking element. By pressing the operating part, the locking element can be pushed from the locking position to the unlocking position, thereby achieving quick and convenient unlocking through a simple pressing action, which greatly reduces the operation difficulty of the stapler.

[0076] Furthermore, it also includes a wing plate structure, which allows for quick and easy downward unlocking simply by moving the wing plate. The wing plate structure transmits force based on the lever principle, further reducing the required operating force, alleviating fatigue during operation, and thus helping to maintain the unlocked state of the stapler.

[0077] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0078] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A push-to-unlock mechanism, which can be applied in a surgical instrument to achieve the unlocking of a working head in the surgical instrument; characterized in that, The pressing unlocking mechanism comprises a locking assembly (10) and a knob assembly (20); The locking assembly (10) comprises a locking piece (11), a first reset piece (12) and a rotating disc (13); the rotating disc (13) has a wedge-shaped slot (131) with a locking position (132) and an unlocking position (133); the locking piece (11) is initially located in the locking position (132), and the first reset piece (12) applies an action force to the locking piece (11) to keep it in the locking position (132); The knob assembly (20) comprises an operating part (21) and a second reset piece (23); the operating part (21) is arranged above the rotating disc (13), and the second reset piece (23) is arranged between the operating part (21) and the rotating disc (13); the operating part (21) has an unlocking piece (25), and when the operating part (21) is pressed, the unlocking piece (25) can be pressed into a space on one side of the locking piece (11) and push the locking piece (11) from the locking position (132) to the unlocking position (133).

2. The push-to-unlock mechanism of claim 1, wherein, The operating part (21) comprises a knob body; the unlocking piece (25) is a cylinder arranged on the lower surface of the knob body; the cylinder is initially extended to a position above one side of the locking piece (11).

3. The push-to-unlock mechanism of claim 2, wherein, The end surface of the cylinder is arranged to be suitable for being pressed into one side of the locking piece (11) and pushing the first inclined surface of the locking piece (11).

4. The push-to-unlock mechanism of claim 1, wherein, The operating part (21) comprises a knob body (211), an operating piece (212) and an unlocking floating block (213); One side of the unlocking floating block (213) has a second inclined surface (2131), and the other side has the unlocking piece (25); The operating piece (212) has a third inclined surface (2121) abutting against the second inclined surface (2131); when the operating piece (212) is actuated, the unlocking piece (25) of the unlocking floating block (213) can be pressed into a space on one side of the locking piece (11) and the locking piece (11) can be pushed from the locking position (132) to the unlocking position (133) through the cooperation of the third inclined surface (2121) and the second inclined surface (2131).

5. The push-to-unlock mechanism of claim 4, wherein, The operating piece (212) comprises a first wing plate (214); One end of the first wing plate (214) is pivotally connected to the knob body (211), and the other end abuts against the second inclined surface (2131) of the unlocking floating block (213) through the third inclined surface (2121); when the first wing plate (214) is pivoted and swung, the unlocking floating block (213) can be moved downward through the cooperation of the third inclined surface (2121) and the second inclined surface (2131).

6. The push-to-unlock mechanism of claim 5, wherein, The operating piece (212) further comprises a second wing plate (215); one end of the first wing plate (214) and the second wing plate (215) is pivotally connected to the knob, and the first wing plate (214) and the second wing plate (215) initially have an included angle therebetween; One side of the unlocking floating block (213) has an arc surface, two sides of the arc surface form the second inclined surface (2131); the other end of the first wing plate (214) abuts against the second inclined surface (2131) on one side through the third inclined surface (2121); the other end of the second wing plate (215) abuts against the second inclined surface (2131) on one side through the third inclined surface (2121); When the first wing plate (214) and the second wing plate (215) swing close to each other, the unlocking floating block (213) can be driven to move downward through cooperation of the third inclined surface (2121) and the second inclined surface (2131).

7. The push-to-unlock mechanism of claim 6, wherein, One end of the first wing plate (214) and the second wing plate (215) is coaxially pivotally connected to the knob body (211).

8. The push-to-unlock mechanism of claim 5 or 6, wherein, Any wing plate is L-shaped, one end of the L-shaped wing plate is a pivotally connected end, and the other end is an operating end; a protrusion is arranged below any wing plate, and an end surface of the protrusion forms the third inclined surface (2121).

9. The push-to-unlock mechanism of claim 6, wherein, The first reset member (12) is one or a combination of several of a magnetic block, a spring or a torsion spring; the rotating disc (13) is provided with a mounting groove (134) for accommodating the first reset member (12).

10. A surgical instrument, characterized by The surgical instrument comprises the pressing unlocking mechanism according to any one of claims 1-9.

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