Detachable lamina rongeur

Abstract

The present invention relates to the technical field of medical devices, and more specifically, to a detachable lamina rongeur, which comprises a main body, a sliding rod and a manual handle. The manual handle is connected to both the main body and the sliding rod. A push-button locking structure is provided on the main body behind the manual handle and the sliding rod, and the push-button locking structure is provided with a first limiting member and a second limiting member; the push-button locking structure includes a first state and a second state; when the push-button locking structure is in the first state, the first limiting member is separated from the sliding rod, and the second limiting member abuts against the manual handle and limits the rotation range of the manual handle. The rotation of the manual handle can drive the sliding rod to move along the slide rail; when the push-button locking structure is in the second state, the first limiting member is connected to the sliding rod, the second limiting member is connected to the manual handle, the sliding rod leaves the slide rail, and the rear end of the sliding rod is connected to the manual handle and forms a fixed angle with the main body. This detachable lamina rongeur is convenient for cleaning and disinfection, and can be cleaned without being disassembled into separate parts, solving the problem of easy loss of components.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and more particularly, to a detachable laminar rongeur. Background Art

[0002] Laminar rongeurs are mainly used in clinical surgeries, especially neurosurgical operations, for biting and cutting small bones and soft tissues. Currently, the laminar rongeurs used clinically have the following problems:

[0003] Most traditional laminar rongeurs cannot be disassembled and can only be cleaned as a whole. However, during the surgical process, bone residues and tissues often remain in the gaps of the laminar rongeur, making it difficult to clean thoroughly. Prolonged use can easily cause serious consequences such as cross-infection;

[0004] There are also some detachable laminar rongeurs on the market, but they can only be disassembled into loose parts for cleaning, and there are certain requirements for the placement positions. When cleaning and sterilizing a pile of surgical instruments, it takes a lot of time to find the paired components, and there is also a risk of loss, seriously affecting the working effect and efficiency. Summary of the Invention

[0005] The present invention provides a detachable laminar rongeur that is easy to clean and disinfect, and can be cleaned without being disassembled into loose parts, solving the problem of easy loss of components.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is:

[0007] Provide a detachable laminar rongeur, including a main body with a slide rail, a slide bar, and a manual handle. The front end of the main body is provided with a cutting edge. The slide bar is arranged above the main body. The manual handle is connected to both the main body and the slide bar, and the manual handle can drive the slide bar to move along the slide rail. A push-button locking structure is arranged on the main body behind the manual handle and the slide bar. The push-button locking structure is provided with a first limiting member and a second limiting member;

[0008] The push-button locking structure includes a first state and a second state;

[0009] When the push-button locking structure is in the first state, the first limiting member is separated from the slide bar, and the second limiting member abuts against the rear of the manual handle and limits the rotation range of the manual handle. The rotation of the manual handle can drive the slide bar to move along the slide rail. At this time, the laminar rongeur is in the working state;

[0010] When the push-button locking structure is in the second state, the first limiting member is connected to the slide bar, the second limiting member is connected to the manual handle, the slide bar leaves the slide rail, and the rear end of the slide bar is connected to the manual handle and forms a fixed angle with the main body. At this time, the laminar rongeur is in the disassembled state.

[0011] Further, a reset mechanism is provided between the first limiting member and the second limiting member; a manual handle limiting hole is further provided at one end of the manual handle connected to the sliding rod, and a sliding rod limiting hole for mating connection with the first limiting member is provided at the rear end of the sliding rod;

[0012] When the push-button lock structure switches from the first state to the second state, during the process of connecting the first limiting member and the sliding rod limiting hole, the reset mechanism cooperates with the second limiting member to connect the second limiting member to the manual handle limiting hole.

[0013] Furthermore, the push-button lock structure includes a first limiting member, a second limiting member, a compression spring and a connecting rod, and a hollow area is provided at the cheek part of the main body; the first limiting member and the compression spring are arranged in the hollow area;

[0014] The connecting rod penetrates into the main body from one side of the cheek part, sequentially passes through the first limiting member and the compression spring, and then penetrates out from the opposite side of the main body cheek part and is fixedly connected to the second limiting member;

[0015] One end of the first limiting member is fixedly connected to the connecting rod and the other end is a first free end, and a first protrusion that can be connected to the sliding rod limiting hole is provided on the first free end; one end of the second limiting member is fixedly connected to the connecting rod and the other end is a second free end, and a second protrusion that can limit the rotation range of the manual handle or be connected to the manual handle limiting hole is provided on the second free end; both ends of the compression spring respectively abut against the connection ends of the first limiting member and the second limiting member and the connecting rod.

[0016] Furthermore, the push-button lock structure includes a button hook, a compression spring and a guiding base; a hollow area is provided at the cheek part of the main body;

[0017] The guiding base includes a base, a guiding shaft arranged on the same side of the base and a limiting shaft that can limit the rotation range of the manual handle or be connected to the manual handle limiting hole; one end of the button hook is provided with a button and is connected to the guiding shaft, and the other end is provided with a hook-like structure that can be connected to the sliding rod limiting hole; the guiding shaft passes through the compression spring, and both ends of the compression spring respectively abut against the button and the base;

[0018] The button and the base are respectively arranged on two opposite sides of the main body cheek part, and the guiding shaft passes through the hollow area of the main body cheek part.

[0019] Preferably, the upper end surface of the hook-like structure is an inclined surface.

[0020] Preferably, the button on the button hook is in interference fit connection with the guiding shaft.

[0021] Preferably, a cheek screw is provided on the main body; the manual handle is cross-connected to the main body through the cheek screw, and the manual handle can rotate around the cheek screw.

[0022] Preferably, a strip-shaped hole is provided at one end of the operating handle connected to the sliding rod, and the sliding rod is connected to the operating handle through a pin shaft in cooperation with the strip-shaped hole; when the lamina rongeur is in the working state, the sliding rod pin shaft is located below the strip-shaped hole; when the lamina rongeur is in the disassembled state, the sliding rod pin shaft is located above the strip-shaped hole.

[0023] Optionally, a shrapnel assembly is provided between the operating handle and the main body. The shrapnel assembly includes a first shrapnel, a rotating part, and a second shrapnel. One end of the first shrapnel is fixedly connected to the operating handle, and the other end is connected to the rotating part; one end of the second shrapnel is connected to the rotating part, and the other end is detachably fixed to the main body.

[0024] Optionally, a card slot matching the length of the second shrapnel is provided on the main body, and a card hole for clamping the second shrapnel is further provided at the lower end of the card slot.

[0025] Compared with the prior art, the detachable lamina rongeur of the present invention can conveniently switch between the working state and the disassembled state. It is provided with a push-button lock structure with a first limiting member and a second limiting member on the main body. When the lamina rongeur is normally used, the second limiting member restricts the rotation range of the operating handle so that it rotates within the working range, and the operating handle drives the sliding rod to move back and forth on the slide rail of the main body; when the lamina rongeur needs to be switched to the disassembled state, just press the push-button lock structure, and the operating handle can lose the restriction of the second limiting member behind it and rotate, thereby driving the sliding rod to slide away from the slide rail and rotate to be connected to the first limiting member. During this process, the second limiting member moves to be connected to the operating handle, and finally the sliding rod forms a fixed angle with the main body; when the lamina rongeur needs to be switched back to the working state, just press the push-button lock structure again to simultaneously release the limiting connection of the first limiting member and the second limiting member to the sliding rod and the operating handle respectively, press down and push the sliding rod forward, and the push-button lock structure is converted to the original state, and the lamina rongeur can be used normally.

[0026] The structural design of the detachable lamina rongeur of the present invention can thoroughly clean and disinfect the gap between the main body and the sliding rod, avoid the residue of bone chips and soft tissues, reduce the possibility of cross-infection, solve the problems of difficult cleaning, time-consuming, and easy loss of components of the lamina rongeur, and its disassembly and assembly operations are simple and highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the working state of the detachable lamina rongeur in an embodiment of the present invention.

[0028] Figure 2 It is a schematic diagram of the working state of the detachable lamina rongeur in an embodiment of the present invention.

[0029] Figure 3Schematic diagram of the disassembled state of a detachable lamina rongeur in an embodiment of the present invention.

[0030] Figure 4 Partial schematic diagram one of the disassembled state of a detachable lamina rongeur in an embodiment of the present invention.

[0031] Figure 5 Partial schematic diagram two of the disassembled state of a detachable lamina rongeur in an embodiment of the present invention.

[0032] Figure 6 Schematic diagram of a hook button in an embodiment of the present invention.

[0033] Figure 7 Schematic diagram of a guiding base in an embodiment of the present invention.

[0034] Figure 8 Schematic diagram of a push-button lock structure in an embodiment of the present invention.

[0035] Figure 9 Schematic diagram of the structure of a manual handle in an embodiment of the present invention. Detailed implementation manners

[0036] The present invention will be further described below in conjunction with the detailed implementation manners. Among them, the drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation to this patent; in order to better illustrate the embodiments of the present invention, some components in the drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0037] In the drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "vertical", "horizontal", "lateral", "longitudinal", etc. indicating the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, and are 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, so the terms describing the position relationship in the drawings are only for illustrative purposes and should not be construed as a limitation to this patent.

[0038] Moreover, in addition to being able to represent the orientation or position relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present invention can be understood according to the specific circumstances.

[0039] In addition, if there are terms such as "first" and "second", they are only used for descriptive purposes, mainly to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components, and cannot be understood as indicating or implying relative importance.

[0040] like Figures 1 to 9 The figure shows an embodiment of the detachable vertebral plate rongeur of the present invention. The detachable vertebral plate rongeur includes a main body 10 with a slide rail 11, a slide rod 20 and a movable handle 30. The front end of the main body 10 is provided with a cutting edge 12. The slide rod 20 is arranged above the main body 10. The movable handle 30 is connected to the main body 10 and the slide rod 20 at the same time, and the movable handle 30 can drive the slide rod 20 to move along the slide rail 11. The main body 10 is provided with a push-type locking structure 40 located behind the movable handle 30 and the slide rod 20. The push-type locking structure 40 is provided with a first limit member and a second limit member. Among them, the push-type locking structure 40 includes a first state and a second state. It should be noted that in this embodiment, the vertebral plate rongeur is shown as the front end in the working direction.

[0041] like Figure 1 , Figure 2 As shown, when the push-type locking structure 40 is in the first state, the first limiter is separated from the slide bar 20, and the second limiter is pressed against the rear of the movable handle 30 and limits the rotation range of the movable handle 30, that is, the movable handle 30 can drive the slide bar 20 to move forward and backward along the slide rail 11 within its rotation range, and at this time, the vertebral plate bone rongeur is in a working state. It can be understood that when the vertebral plate bone rongeur is working, the movable handle 30 is connected to the main body 10 and can move relative to the main body 10, that is, when the user holds the vertebral plate bone rongeur, pressing or loosening the movable handle 30 can move the slide bar 20 forward and backward to achieve operations such as biting and cutting soft tissue.

[0042] like Figure 1 , Figure 2 As shown, when the push-type locking structure 40 is in the second state, the first stopper is connected to the slide bar 20, the second stopper is connected to the movable handle 30, the slide bar 20 leaves the slide rail 11, and the rear end of the slide bar 20 is connected to the movable handle 30 and forms a fixed angle with the main body 10. At this time, the vertebral plate bone rongeur is in a disassembled state. Among them, the connection between the first stopper and the slide bar 20 and the connection between the second stopper and the movable handle 30 can be a keyway match, or a pin hole match, etc., and is not limited to a fixed connection method.

[0043] The detachable lamina rongeur of the present invention can conveniently switch between the working state and the disassembled state. A push-button lock structure 40 with a first limiting member and a second limiting member is provided on the main body 10. When the lamina rongeur is in normal use, the second limiting member restricts the rotation range of the moving handle 30 so that it rotates within the working range. Since the moving handle 30 is connected to the sliding rod 20, the moving handle 30 can drive the sliding rod 20 to move back and forth on the slide rail 11 of the main body 10. When the lamina rongeur needs to be switched to the disassembled state, just press the push-button lock structure 40, and the moving handle 30 can lose the restriction of the second limiting member located behind it and can continue to rotate clockwise, thereby driving the sliding rod 20 to slide backward away from the slide rail 11 and rotate to be connected to the first limiting member. During this process, the second limiting member moves to be connected to the moving handle 30, and finally the sliding rod 20 forms a fixed angle with the main body 10. When the lamina rongeur needs to be switched back to the working state, just press the push-button lock structure 40 again to simultaneously release the limiting connection of the first limiting member and the second limiting member to the sliding rod 20 and the moving handle 30 respectively. Press down and push the sliding rod 20 forward, and the push-button lock structure 40 is converted to the original state, and the lamina rongeur can be used normally.

[0044] In an embodiment of the present invention, a reset mechanism may also be provided between the first limiting member and the second limiting member, such as Figures 1 to 5 , Figure 9 As shown, a moving handle limiting hole 31 is further provided at the connection end of the moving handle 30 and the sliding rod 20, and a sliding rod limiting hole 21 for cooperating with the first limiting member is provided at the rear end of the sliding rod 20. When the push-button lock structure 40 is switched from the first state to the second state, during the process of the first limiting member being connected to the sliding rod limiting hole 21, the reset mechanism cooperates with the second limiting member to connect the second limiting member to the moving handle limiting hole 31. Specifically, when the push-button lock structure 40 is pressed, the second limiting member moves backward along the pressing direction to release the restriction on the rear end of the moving handle 30, that is, the second limiting member moves to the side of the moving handle 30, and the moving handle 30 can continue to rotate clockwise. During the clockwise rotation of the moving handle 30, the sliding rod 20 is driven to move backward until the second limiting member falls into the moving handle limiting hole 31, and the moving handle 30 rotates to the limit position, that is, the sliding rod 20 also moves backward to the limit position. Since the sliding rod 20 is connected to the moving handle 30, it then leaves the slide rail 11 and continues to rotate clockwise around the connection with the moving handle 30. During the rotation of the sliding rod 20, the first limiting member starts to contact the rear end of the sliding rod 20. Since the positions of the second limiting member and the first limiting member are relatively fixed, the second limiting member is pushed out of the moving handle limiting hole 31 until the first limiting member falls into the sliding rod limiting hole 21. Under the action of the reset mechanism, the second limiting member simultaneously falls back into the moving handle limiting hole 31 again. At this time, both the moving handle 30 and the sliding rod 20 are in a fixed state, that is, the lamina rongeur is in the final disassembled state.

[0045] In one embodiment, the push-type latch structure 40 can be manufactured with a simple structure. The push-type latch structure 40 includes a first limiting member, a second limiting member, a compression spring, and a connecting rod. A hollow area is provided in the cheek portion of the main body 10; the first limiting member and the compression spring are arranged in the hollow area. At this time, the compression spring is the reset mechanism. Among them, the connecting rod penetrates into the main body 10 from one side of the cheek portion, sequentially passes through the first limiting member and the compression spring, and then penetrates out from the opposite side of the cheek portion of the main body 10 and is fixedly connected to the second limiting member. One end of the first limiting member is fixedly connected to the connecting rod, and the other end is the first free end. A first protrusion that can be connected to the slide rod limiting hole 21 is provided on the first free end; one end of the second limiting member is fixedly connected to the connecting rod, and the other end is the second free end. A second protrusion that can limit the rotation range of the operating handle 30 or be connected to the operating handle limiting hole 31 is provided on the second free end; both ends of the compression spring respectively abut against the connection ends of the first limiting member and the second limiting member with the connecting rod. It can be understood that since both the operating handle 30 and the slide rod 20 rotate within the plane range of the main body 10 shown to realize the disassembly and opening of the lamina rongeur, in order to enable the first protrusion to be connected in cooperation with the slide rod limiting hole 21 and the second protrusion to be connected in cooperation with the operating handle limiting hole 31, the first limiting member and the second limiting member should be respectively vertically connected to both ends of the connecting rod, and there is a certain angle between the first limiting member and the second limiting member, so as to realize the rotation limiting effect of the second protrusion on the operating handle 30 when the lamina rongeur is in the working state, and when disassembling the lamina rongeur, the first protrusion and the second protrusion can respectively realize the fixed limiting effect on the slide rod 20 and the operating handle 30.

[0046] In a preferred embodiment, the push-type latch structure 40 can also be manufactured with a simpler structure, which is convenient for production, assembly and disassembly. For example Figures 4 to 8As shown, the push-type latch structure 40 includes a button hook 41, a compression spring 42, and a guiding base 43; a hollow area is provided in the cheek portion of the main body 10. At this time, the compression spring 42 serves as the reset mechanism. Among them, the guiding base 43 includes a base 431, a guiding shaft 432 provided on the same side of the base 431, and a limiting shaft 433 that can limit the rotation range of the operating handle 30 or is connected to the limiting hole 31 of the operating handle; one end of the button hook 41 is provided with a button 411 and is connected to the guiding shaft 432, and the other end is provided with a hook-shaped structure 412 that can be connected to the slide bar limiting hole 21; the guiding shaft 432 passes through the compression spring 42, and both ends of the compression spring 42 respectively abut against the button 411 and the base 431. The button 411 and the base 431 are respectively arranged on two opposite sides of the cheek portion of the main body 10, and the guiding shaft 432 passes through the hollow area of the cheek portion of the main body 10, that is to say, the compression spring 42 and the button hook 41 are basically arranged in the hollow area. It should be noted that the length of the guiding shaft 432 should be at least able to pass through the hollow area of the cheek portion of the main body 10; and the length of the limiting shaft 433 should be such that after pressing the button 411, the backward movement of the limiting shaft 433 along the pressing direction can release the restriction on the rotation range of the operating handle 30. In this embodiment, the guiding base 43 directly replaces the second limiting member and the connecting rod, and the integrally formed structure is more stable and more convenient to use; and the button hook 41 can be directly connected to the guiding base 43 to replace the first limiting member. In addition, as Figure 5 shown, in order to improve the overall structural stability and aesthetics, the base 431 of the guiding base 43 can also be embedded in the main body 10 of the laminar rongeur.

[0047] During actual use, when the laminar rongeur is in the working state, the limiting shaft 433 abuts against the rear end of the operating handle 30, and the operating handle 30 can only rotate within the working range under the limiting action of the limiting shaft 433, that is, pressing or relaxing the operating handle 30 can drive the slide bar 20 to move back and forth along the slide rail 11 on the main body 10. At this time, the T-shaped boss 22 provided on the slide bar 20 is in the slide rail 11 of the main body 10, and at the same time, the hook-shaped structure 412 of the button hook 41 is located behind the slide bar 20 and is separated from the slide bar 20;

[0048] When the laminar rongeur needs to be switched from the working state to the disassembling state, press the button 411. The guiding base 43 moves backward as a whole along the pressing direction, that is, the limiting shaft 433 can move to release the rotational limit on the operating handle 30. The operating handle 30 continues to rotate clockwise around the connection with the main body 10, and at the same time drives the sliding rod 20 to move backward along the slide rail 11. At this time, the axial position of the button 411 is limited by the end face of the operating handle 30 and is in the pressed state. When the operating handle 30 rotates to the limit position, that is, it is limited by the end face of the cheek part of the main body 10, that is, the T-shaped boss 22 on the sliding rod 20 is no longer on the slide rail 11 of the main body 10 and moves backward to the limit position. At this time, the limiting shaft 433 of the guiding base 43 falls into the operating handle limiting hole 31 and has a clearance fit with it. The button 411 is reset under the action of the compression spring 42. The sliding rod 20 continues to rotate clockwise around the connection with the operating handle 30, so that the hook-shaped structure 412 on the button hook 41 starts to slide on the inner plane of the sliding rod 20. Since the relative positions of the button hook 41 and the guiding base 43 are fixed, the limiting shaft 433 moves out of the operating handle limiting hole 31 until the hook has a clearance fit with the sliding rod limiting hole 21. The button hook 41 is pushed out in the opposite direction of the pressing of the button 411 under the action of the compression spring 42. At this time, the limiting shaft 433 and the operating handle limiting hole 31 have a clearance fit again, and the positions of the sliding rod 20 and the operating handle 30 are both fixed, and the sliding rod 20 forms a fixed angle with the main body 10.

[0049] When the laminar rongeur needs to be switched back from the disassembling state to the working state, press the button 411. Both the operating handle 30 and the sliding rod 20 lose their limits. Press down and push the sliding rod 20 forward. The sliding rod 20 rotates until its end face contacts the end face of the main body 10. When the operating handle 30 is rotated counterclockwise until it reaches the normal working position, the button 411 automatically pops open under the action of the compression spring 42, and the laminar rongeur resets to the normal working state.

[0050] When disassembling the laminar rongeur, during the process of the sliding rod 20 rotating to a fixed angle with the main body 10, in order to facilitate the hook-shaped structure 412 on the button hook 41 to enter the sliding rod limiting hole 21, as Figure 6 、 Figure 8 shown, the upper end face of the hook-shaped structure 412 can be set as an inclined surface 413. And for the convenience of assembly and disassembly, a hole position is set on the back surface of the button 411 of the button hook 41 to make it have an interference fit connection with the guiding shaft 432.

[0051] As Figures 1 to 3 shown, the main body 10 is provided with a cheek part screw 13; a through hole 33 is correspondingly provided on the operating handle 30, and the operating handle 30 can be cross-connected with the main body 10 through the cheek part screw 13, and the operating handle 30 can rotate around the cheek part screw 13. When it is necessary to disassemble the laminar rongeur, press the push-button lock structure 40. After the operating handle 30 loses the limit of the second limiting member, it can rotate clockwise around the cheek part screw 13, thereby driving the sliding rod 20 to continue to move backward.

[0052] As Figures 1 to 5 , Figure 9 shown, a strip-shaped hole 32 is provided at one end of the operating handle 30 connected to the sliding rod 20. The sliding rod 20 is connected to the strip-shaped hole 32 through a pin shaft 23 and is connected to the operating handle 30, that is, the operating handle 30 is connected to the sliding rod 20 with a clearance. That is to say, when disassembling the lamina rongeur, the sliding rod 20 has a reasonable displacement space during the process of being driven backward by the operating handle 30. When the lamina rongeur is in the working state, the pin shaft 23 is located below the strip-shaped hole 32, and the maximum opening position of the operating handle 30 is limited by the second limiting member; when the lamina rongeur is in the disassembling state, the pin shaft 23 is located above the strip-shaped hole 32. When the operating handle 30 rotates to the limit position, the sliding rod 20 also translates to the limit position and rotates to form a fixed opening angle with the main body 10.

[0053] In the embodiment of the present invention, as Figures 1 to 5 shown, a shrapnel assembly 50 is provided between the operating handle 30 and the main body 10. The shrapnel assembly 50 includes a first shrapnel 51, a rotating part 52, and a second shrapnel 53. One end of the first shrapnel 51 is fixedly connected to the operating handle 30 and the other end is connected to the rotating part 52; one end of the second shrapnel 53 is connected to the rotating part 52 and the other end is detachably fixed to the main body 10. It can be understood that the rotating part 52 should be a pivot. That is to say, the first shrapnel 51 and the second shrapnel 53 can move relative to each other, so that during the working process of the lamina rongeur, the operating handle 30 can be reset after being pressed and relaxed; when disassembly is required, after pressing the push-button lock structure 40, the operating handle 30 loses the limit of the second limiting member and can continue to rotate clockwise under the action of the shrapnel assembly 50 without manual operation.

[0054] In a preferred embodiment, as Figure 1 shown, a card slot 14 matching the length of the second shrapnel 53 is further opened at a corresponding position on the main body 10, and a card hole 15 for clamping the second shrapnel 53 is provided at the lower end of the card slot 14. When the lamina rongeur is in the working state, the end of the second shrapnel 53 is clamped in the card hole 15; when the lamina rongeur needs to be disassembled, the operating handle 30 continues to rotate clockwise after losing the limit, and then the end of the second shrapnel 53 connected to the main body 10 separates from the card hole 15; when the lamina rongeur needs to be restored to the working state, the end of the second shrapnel 53 can be re-clamped into the card hole 15 of the card slot 14, with a simple structure and convenient operation.

[0055] When the detachable lamina rongeur according to the embodiment of the present invention is actually used, the operating handle 30 is pulled back and forth (that is, the user holds the main body 10 and the operating handle 30 at the same time, presses or relaxes the operating handle 30). The strip-shaped hole 32 on the operating handle 30 is in surface contact with the pin shaft 23 on the sliding rod 20. The operating handle 30 rotates counterclockwise around the cheek screw 13 on the main body 10, overcomes the pressure of the elastic piece assembly 50 and drives the sliding rod 20 to move forward to cut bones or soft tissues.

[0056] When it is necessary to disassemble the lamina rongeur, press the button 411. The guiding base 43 moves backward along the pressing direction, that is, the limiting shaft 433 moves backward. The operating handle 30 loses the limitation of the limiting shaft 433 and can continue to rotate clockwise around the cheek screw 13, driving the sliding rod 20 to slide backward. At this time, the axial position of the pressing type locking structure 40 is limited by the end face of the operating handle 30 and is in a pressed state; when the operating handle 30 continues to rotate around the cheek screw 13 to the limit position, the operating handle 30 is limited by the end face of the cheek of the main body 10, and the sliding rod 20 also translates to the limit position. At this time, the guiding base 43 resets, and the limiting shaft 433 has a clearance fit with the operating handle limiting hole 31, and the button 411 resets; the sliding rod 20 continues to rotate clockwise around the pin shaft 23 against the force of the compression spring 42, so that the inclined surface 413 of the hook-shaped structure 412 of the button hook 41 slides on the inner plane of the sliding rod 20. During this process, since the guiding base 43 and the button hook 41 are fixedly connected relatively, the limiting shaft 433 moves out of the operating handle limiting hole 31. When the sliding rod 20 continues to rotate until the hook-shaped structure 412 has a clearance fit with the sliding rod limiting hole 21, the limiting shaft 433 has a clearance fit with the operating handle limiting hole 31 again, and the button hook 41 is pushed out by the compression spring 42, so that the position of the sliding rod 20 is fixed and forms a fixed angle with the main body 10, which is the final disassembled state.

[0057] When the lamina rongeur switches from the disassembled state to the normal state, press the button 411. Both the operating handle 30 and the sliding rod 20 lose their limitations. The sliding rod 20 rotates around the pin shaft 23 until its end face contacts the end face of the main body 10. When the operating handle 30 is rotated counterclockwise to the normal working position, the button 411 automatically pops up, and the overall structure resets to the normal working state.

[0058] The structural design of the detachable lamina rongeur of the present invention can thoroughly clean and disinfect the gap between the main body 10 and the sliding rod 20, avoid the residue of bone chips and soft tissues, reduce the possibility of cross-infection, solve the problems of difficult cleaning, time-consuming, and easy loss of components of the lamina rongeur, and its disassembly and assembly operations are simple and highly practical.

[0059] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A detachable lamina rongeur, comprising a main body with a slide rail, a slide rod and a manual handle. The front end of the main body is provided with a cutting edge. The slide rod is arranged above the main body. The manual handle is connected to both the main body and the slide rod, and the manual handle can drive the slide rod to move along the slide rail. It is characterized in that a cheek screw is provided on the main body. The manual handle is cross-connected to the main body through the cheek screw, and the manual handle can rotate around the cheek screw. A push-button lock structure is arranged on the main body behind the manual handle and the slide rod. The push-button lock structure is provided with a first limiting member and a second limiting member, and a reset mechanism is arranged between the first limiting member and the second limiting member. A manual handle limiting hole is further provided at one end of the manual handle connected to the slide rod, and a slide rod limiting hole for cooperating with and connecting to the first limiting member is provided at the rear end of the slide rod. The push-button lock structure includes a first state and a second state. When the push-button lock structure switches from the first state to the second state, during the process of connecting the first limiting member to the slide rod limiting hole, the reset mechanism cooperates with the second limiting member to connect the second limiting member to the manual handle limiting hole. When the push-button lock structure is in the first state, the first limiting member is separated from the slide rod, and the second limiting member abuts against the rear of the manual handle and limits the rotation range of the manual handle. The rotation of the manual handle can drive the slide rod to move along the slide rail. At this time, the lamina rongeur is in a working state. When the push-button lock structure is in the second state, the first limiting member is connected to the slide rod, the second limiting member is connected to the manual handle, the slide rod leaves the slide rail, and the rear end of the slide rod is connected to the manual handle and forms a fixed angle with the main body. At this time, the lamina rongeur is in a disassembled state.

2. The detachable lamina rongeur according to claim 1, It is characterized in that the push-button lock structure includes a button hook, a compression spring and a guiding base; a hollow area is provided on the cheek of the main body. The guiding base includes a base, a guiding shaft arranged on the same side of the base, and a limiting shaft that can limit the rotation range of the manual handle or be connected to the manual handle limiting hole. One end of the button hook is provided with a button and is connected to the guiding shaft, and the other end is provided with a hook-shaped structure that can be connected to the slide rod limiting hole. The guiding shaft passes through the compression spring, and both ends of the compression spring abut against the button and the base respectively. The button and the base are respectively arranged on two opposite sides of the cheek of the main body, and the guiding shaft passes through the hollow area of the cheek of the main body.

3. The detachable lamina rongeur according to claim 2, It is characterized in that the upper end surface of the hook-shaped structure is an inclined surface.

4. The detachable lamina rongeur according to claim 2, It is characterized in that the button on the button hook is connected to the guiding shaft by interference fit.

5. The detachable lamina rongeur according to claim 1, It is characterized in that a strip hole is provided at one end of the manual handle connected to the slide rod, and the slide rod is connected to the manual handle through a pin shaft in cooperation with the strip hole. When the lamina rongeur is in a working state, the slide rod pin shaft is located below the strip hole. When the lamina rongeur is in a disassembled state, the slide rod pin shaft is located above the strip hole.

6. The detachable lamina rongeur according to any one of claims 1 to 5, characterized in that, a shrapnel assembly is arranged between the operating handle and the main body, and the shrapnel assembly includes a first shrapnel, a rotating part and a second shrapnel. One end of the first shrapnel is fixedly connected to the operating handle and the other end is connected to the rotating part; one end of the second shrapnel is connected to the rotating part and the other end is detachably fixed on the main body.

7. The detachable lamina rongeur according to claim 6, characterized in that, a card slot matching the length of the second shrapnel is formed on the main body, and a card hole for clamping the second shrapnel is further arranged at the lower end of the card slot.

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