A detachable vertebral plate rongeur

Abstract

The present invention relates to the field of medical device technology, and more specifically, to a detachable vertebral plate rongeur, comprising a main body with a slide rail, a slide rod, and a movable handle, the front end of the main body being provided with a cutting edge, the slide rod being arranged above the main body, the movable handle being connected to the main body and the slide rod at the same time, and the movable handle being able to drive the slide rod to move along the slide rail, the cheek of the main body being provided with a knob-type locking structure, the movable handle being able to be pulled back and forth, and the upper part of the movable handle being provided with a first characteristic portion and a second characteristic portion in sequence from bottom to top, the knob-type locking structure being pressed against the first characteristic portion or the second characteristic portion. The detachable vertebral plate rongeur of the present invention can be conveniently switched between a working state and a disassembled state, can thoroughly clean and disinfect the gap between the main body and the slide rod, avoid the residue of bone debris and soft tissue, reduce the possibility of cross infection, and solve the problems of difficult and time-consuming cleaning of the vertebral plate rongeur, and easy loss of components. It is simple to assemble and disassemble and has strong practicality.

Description

Technical Field

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

[0002] Vertebral rongeurs are mainly used in clinical surgery, especially neurosurgery, to bite and cut small bones and soft tissues. Currently, clinically used vertebral rongeurs have the following problems:

[0003] Traditional vertebral rongeurs are mostly non-detachable and can only be cleaned as a whole. However, during surgery, bone debris and tissue often remain in the gaps of the vertebral rongeurs, making them difficult to clean thoroughly. Long-term use can easily lead to serious consequences such as cross-infection.

[0004] There are some detachable vertebral rongeurs available on the market, but they can only be disassembled into separate parts for cleaning, and there are certain requirements for placement. When cleaning and sterilizing a pile of surgical instruments, it takes a lot of time to find the matching components, and there is also the risk of loss, which seriously affects work results and efficiency. Summary of the Invention

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

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

[0007] A detachable vertebral plate rongeur is provided, comprising a main body with a slide rail, a slide rod and a movable handle, wherein the front end of the main body is provided with a cutting edge, the slide rod is arranged above the main body, the movable handle is connected to both the main body and the slide rod, and the movable handle can drive the slide rod to move along the slide rail, the cheek portion of the main body is provided with a knob-type locking structure, the movable handle can be pulled back and forth, and the upper portion of the movable handle is provided with a first feature portion and a second feature portion in sequence from bottom to top, the knob-type locking structure being tightly pressed against the first feature portion or the second feature portion;

[0008] When the knob-type locking structure is pressed against the first characteristic part, the movable handle can drive the sliding rod to move forward and backward along the sliding rail. At this time, the vertebral plate bone picking forceps is in a working state; when the movable handle is pulled forward, the knob-type locking structure is pressed against the second characteristic part, the sliding rod leaves the sliding rail, and the sliding rod forms a fixed angle with the main body under the limiting action of the knob-type locking structure. At this time, the vertebral plate bone picking forceps is in a disassembled state.

[0009] Furthermore, the knob-type locking structure is provided with a sliding portion and a fixing portion in order from bottom to top. When the vertebral plate rongeur is in the working state, the sliding portion abuts against the first characteristic portion of the movable handle; when the vertebral plate rongeur is in the disassembled state, the sliding portion abuts against the second characteristic portion of the movable handle, and the fixing portion is connected to the rear end of the sliding rod so that the sliding rod forms a fixed angle with the main body.

[0010] Furthermore, the knob-type lock structure includes a knob shaft, a special-shaped hook, a torsion spring and a limit washer; the cheek of the main body is provided with a hollow area;

[0011] The special-shaped hook and the torsion spring are arranged in the hollow area; a knob is provided at one end of the knob shaft; the other end of the knob shaft passes through the hollow area from one side of the main body cheek, passes through the special-shaped hook and the torsion spring in sequence, and then passes through the opposite side of the main body cheek, and is fixed by the limit washer;

[0012] One end of the torsion spring is fixedly connected to the special-shaped hook, and the other end is fixed to the cheek of the main body; the special-shaped hook is interference-fitted with the knob shaft, and the sliding part and the fixed part are sequentially arranged on the end surface of the front side of the special-shaped hook from bottom to top.

[0013] Preferably, the middle portion of the front end surface of the special-shaped hook is a forward-protruding boss forming the sliding portion; the upper end of the front end surface of the special-shaped hook is a hook-shaped protrusion forming the fixing portion, and the upper end surface of the fixing portion is a plane;

[0014] The rear end face of the upper part of the movable handle is raised to form an arc boss, and the lower surface of the arc boss is connected to the rear end face of the movable handle in an arc transition to form the first characteristic portion; the upper surface of the arc boss is connected to the rear end face of the movable handle in an arc transition to form the second characteristic portion; the sliding portion can move and press on the first characteristic portion or the second characteristic portion.

[0015] Preferably, a limit pin is further provided in the hollow area of ​​the cheek of the main body, and the limit pin is arranged below the sliding part, and the axis of the limit pin is parallel to the axis of the knob shaft; when the vertebral plate bone-holding forceps is in a working state, the limit pin abuts against the bottom of the sliding part so that the sliding part is pressed against the first characteristic part.

[0016] Preferably, a hook pin is provided at the rear end of the slide rod, and the axis of the hook pin is parallel to the axis of the knob shaft; when the vertebral plate bone clamp is in a disassembled state, the hook-shaped fixing portion is hooked on the hook pin to form a fixed angle between the slide rod and the main body.

[0017] Preferably, the main body is provided with cheek screws; the movable handle is cross-connected with the main body through the cheek screws, and the movable handle can rotate around the cheek screws.

[0018] Preferably, a strip hole is provided on one end of the movable handle connected to the sliding rod, and the sliding rod is connected to the movable handle through a sliding rod pin that cooperates with the strip hole; when the vertebral plate bone picking forceps is in a working state, the sliding rod pin is located at the bottom of the strip hole; when the vertebral plate bone picking forceps is in a disassembled state, the sliding rod pin is located at the top of the strip hole.

[0019] Preferably, a spring element assembly is provided between the movable handle and the main body, and the spring element assembly includes a first spring element, a rotating part and a second spring element, one end of the first spring element is fixedly connected to the movable handle, and the other end is connected to the rotating part; one end of the second spring element is connected to the rotating part, and the other end is detachably fixed to the main body.

[0020] Optionally, a slot matching the length of the second elastic piece is provided on the main body, and a hole for engaging the second elastic piece is further provided at the lower end of the slot.

[0021] Compared with the prior art, the detachable lamina bone picking forceps of the present invention can be conveniently switched between the working state and the disassembly state. A knob-type locking structure is provided on the main body, and a first characteristic part and a second characteristic part are correspondingly provided on the movable handle. When the lamina bone picking forceps are used normally, the knob-type locking structure cooperates with the first characteristic part to enable the movable handle to drive the slide bar to move back and forth on the slide rail of the main body; when the lamina bone picking forceps needs to be switched to the disassembly state, it is only necessary to pull the movable handle forward to convert the knob-type locking structure into cooperation with the second characteristic part. At this time, since the slide bar is always connected to the movable handle, the slide bar leaves the slide rail of the main body under the simultaneous action of the movable handle and the knob-type locking structure and forms a fixed angle with the main body; when the lamina bone picking forceps needs to be switched back to the working state, it is only necessary to rotate the knob-type locking structure and simultaneously press down and push the slide bar forward, and the knob-type locking structure will be switched back to cooperate with the first characteristic part, and the lamina bone picking forceps can be used normally.

[0022] 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 debris and soft tissue, reduce the possibility of cross infection, and solve the problems of difficult and time-consuming cleaning of the lamina rongeur and easy loss of components. The disassembly and assembly operation is simple and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is one of the schematic diagrams of the working state of the detachable vertebral plate rongeur in one embodiment of the present invention.

[0024] Figure 2 This is the second schematic diagram of the working state of the detachable vertebral plate rongeur in one embodiment of the present invention.

[0025] Figure 3 Schematic diagram of the disassembly process of a detachable vertebral plate rongeur in one embodiment of the present invention.

[0026] Figure 4 This is a partial schematic diagram of the final disassembled state of the detachable vertebral plate rongeur in one embodiment of the present invention.

[0027] Figure 5 Schematic diagram of a knob-type lock structure in one embodiment of the present invention.

[0028] Figure 6 This is another schematic diagram of a knob-type lock structure in one embodiment of the present invention.

[0029] Figure 7 Schematic diagram of the rear end portion of a detachable vertebral plate rongeur in a working state according to one embodiment of the present invention.

[0030] Figure 8 Schematic diagram of the structure of a movable handle in one embodiment of the present invention. DETAILED DESCRIPTION

[0031] The present invention is further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only and are schematic, not actual, representations. They should not be construed as limiting this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted from the drawings.

[0032] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "vertical", "horizontal", "transverse", "longitudinal" and the like indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent.

[0033] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0034] In addition, if terms such as "first" and "second" are used for descriptive purposes only, they are mainly used 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.

[0035] like Figures 1 to 8 The figure shows an embodiment of the detachable vertebral plate rongeur of the present invention. The detachable vertebral plate rongeur comprises 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 both the main body 10 and the slide rod 20. The movable handle 30 can drive the slide rod 20 to move along the slide rail 11. The cheek of the main body 10 is provided with a knob-type locking structure 40. The movable handle 30 can be pulled back and forth, and as shown in FIG. Figure 8 As shown, the upper portion of the movable handle 30 is provided with a first feature portion 311 and a second feature portion 312, sequentially from bottom to top, and the knob-type locking structure 40 is pressed against the first feature portion 311 or the second feature portion 312. It should be noted that in this embodiment, the front end of the vertebral plate rongeur is shown in the working direction; the first feature portion 311 and the second feature portion 312 are not limited to specific point features, but can also be surface features or line features.

[0036] like Figure 1 、 Figure 2 As shown, when the knob-type locking structure 40 is pressed against the first characteristic portion 311, the movable handle 30 can drive the slide bar 20 to move forward and backward along the slide rail 11, and the vertebral lamina rongeur is now in operation. It is understood that when the vertebral lamina rongeur is in operation, 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 lamina rongeur, pressing or releasing the movable handle 30 can move the slide bar 20 forward and backward, thereby performing operations such as biting and cutting soft tissue.

[0037] like Figure 3 、 Figure 4 As shown, when the movable handle 30 is pulled forward, that is, the movable handle 30 needs to be taken out of the normal working state, the knob-type locking structure 40 is converted from the first characteristic portion 311 to be pressed against the second characteristic portion 312, the slide rod 20 leaves the slide rail 11, and the slide rod 20 forms a fixed angle with the main body 10 under the limiting action of the knob-type locking structure 40. At this time, the vertebral plate bone clamp is in a disassembled state.

[0038] The detachable vertebral plate bone rongeur of the present invention can be conveniently switched between the working state and the disassembly state. A knob-type locking structure 40 is provided on the main body 10, and a first characteristic portion 311 and a second characteristic portion 312 are correspondingly provided on the movable handle 30. When the vertebral plate bone rongeur is used normally, the knob-type locking structure 40 cooperates with the first characteristic portion 311 to enable the movable handle 30 to drive the slide bar 20 to move forward and backward on the slide rail 11 of the main body 10; when the vertebral plate bone rongeur needs to be switched to the disassembly state, it is only necessary to pull the movable handle 30 forward to make the knob-type locking structure 40 rotate. The structure 40 is converted to cooperate with the second characteristic part 312. At this time, since the slide rod 20 is always connected to the movable handle 30, the slide rod 20 leaves the slide rail 11 of the main body 10 under the simultaneous action of the movable handle 30 and the knob-type locking structure 40 and forms a fixed angle with the main body 10; when the vertebral plate bone picking forceps needs to be switched back to the working state, it is only necessary to rotate the knob-type locking structure 40 and press down and push the slide rod 20 forward at the same time, and the knob-type locking structure 40 will switch back to cooperate with the first characteristic part 311, and the vertebral plate bone picking forceps can be used normally.

[0039] In actual use, the knob lock structure 40 is also provided with a feature component corresponding to the feature portion of the movable handle 30, so that the movable handle 30 can work normally or be disassembled for cleaning. Figure 5 、 Figure 6 As shown, the knob-type locking structure 40 is provided with a sliding portion 421 and a fixing portion 422 from bottom to top. When the vertebral plate rongeur is in the working state, the sliding portion 421 abuts against the first characteristic portion 311 of the movable handle 30; when the vertebral plate rongeur is in the disassembled state, the sliding portion 421 abuts against the second characteristic portion 312 of the movable handle 30, and the fixing portion 422 is connected to the rear end of the slide bar 20, so that the slide bar 20 forms a fixed angle with the main body 10.

[0040] As a preferred embodiment, Figures 5 to 7 As shown, the knob-type locking structure 40 includes a knob shaft 41, a special-shaped hook 42, a torsion spring 43, and a stopper washer 44. Furthermore, the cheek of the main body 10 is provided with a hollow area. The special-shaped hook 42 and torsion spring 43 are disposed within the hollow area. A knob 411 is disposed at one end of the knob shaft 41. The other end of the knob shaft 41 passes through the hollow area from one side of the cheek of the main body 10, then passes through the special-shaped hook 42 and torsion spring 43, and then exits from the opposite side of the cheek of the main body 10, where it is secured by a stopper washer 44. In actual operation, the stopper washer 44 creates an interference fit with the knob shaft 41 on the outside of the main body 10 (on the opposite side of the cheek), achieving axial positioning, so that the knob-type locking structure 40 can only move in rotation.

[0041] like Figure 7As shown, one end of the torsion spring 43 is fixedly connected to the special-shaped hook 42, and the other end is fixed to the cheek of the main body 10; in order to enable the torsion spring 43 to make corresponding movements when the knob shaft 41 rotates, the special-shaped hook 42 and the knob shaft 41 are interference fit, and the sliding part 421 and the fixed part 422 are arranged in sequence from bottom to top on the end face of the front side of the special-shaped hook 42.

[0042] When the vertebral rongeur is in operation, the shaped hook 42 is held in a forward rotational position by the torque of the torsion spring 43, while the sliding portion 421 on the front end face of the shaped hook 42 slides against and abuts against the first characteristic portion 311 of the movable handle 30. Simultaneously, because the movable handle 30 is connected to the main body 10 and is relatively fixed in position, the shaped hook 42 reacts against the movable handle 30 to limit its limit in operation. At this point, the T-shaped boss 21 on the slide bar 20 is within the slide rail 11 of the main body 10. Pressing or releasing the handle causes the slide bar 20 to slide back and forth along the upper end of the main body 10.

[0043] When the vertebral plate bone picking forceps needs to be switched from the working state to the disassembly state, the movable handle 30 is pulled forward (front direction), and the sliding portion 421 of the special-shaped hook 42 is separated from the first characteristic portion 311. At this time, the knob 411 can be rotated and the movable handle 30 and the knob 411 can be loosened at the same time. Under the action of the torsion spring 43, the sliding portion 421 of the special-shaped hook 42 falls on the second characteristic portion 312. Since the movable handle 30 is connected to the slide rod 20, the movable handle 30 rotates clockwise while driving the slide rod 20 to move backward; when the T-shaped boss 21 on the slide rod 20 is separated from the slide rail 11 of the main body 10, the slide rod 20 continues to move backward to the limit position, and then rotates clockwise around the connection with the movable handle 30 until a fixed angle is formed with the main body 10.

[0044] In actual production, in order to facilitate molding and disassembly, such as Figure 5 、 Figure 6 As shown, the middle part of the front end surface of the special-shaped hook 42 is a protruding boss that forms a sliding portion 421; the upper end of the front end surface of the special-shaped hook 42 is a hook-shaped protrusion that forms a fixing portion 422, and the upper end surface 423 of the fixing portion 422 is a plane. In other words, the sliding portion 421, the fixing portion 422 and the body of the special-shaped hook 42 are integrally formed, which also improves the stability of the entire component. In addition, similarly, as Figure 3 、 Figure 4 and Figure 8 As shown, the rear end face of the upper part of the movable handle 30 is raised to form an arc boss 31, and the lower surface of the arc boss 31 is connected to the rear end face of the movable handle 30 in an arc transition to form a first characteristic portion 311; the upper surface of the arc boss 31 is connected to the rear end face of the movable handle 30 in an arc transition to form a second characteristic portion 312; the sliding portion 421 can move and press on the first characteristic portion 311 or the second characteristic portion 312.

[0045] In one embodiment, Figures 1 to 4 As shown, the hollow area of ​​the cheek portion of the main body 10 is further provided with a stop pin 13, which is disposed below the sliding portion 421. The axis of the stop pin 13 is parallel to the axis of the knob shaft 41. When the vertebral plate rongeur is in the working state, the stop pin 13 abuts against the bottom of the sliding portion 421, causing the sliding portion 421 to abut against the first feature portion 311. In other words, the sliding portion 421 is simultaneously limited by the first feature portion 311 and the stop pin 13, further allowing the special-shaped hook 42 to limit the limit position of the movable handle 30 in the working state. At this time, the movable handle 30 can drive the slide rod 20 to move forward and backward along the slide rail 11. When the vertebral plate rongeur needs to be switched to the disassembled state, the slide portion 421 is disengaged from between the first feature portion 311 and the stop pin 13 and falls into the second feature portion 312.

[0046] In one embodiment, Figures 1 to 4 As shown, the rear end of the slide bar 20 is provided with a hook pin 22, and the axis of the hook pin 22 is parallel to the axis of the knob shaft 41. When the vertebral plate bone rongeur needs to be switched from the working state to the disassembly state, the movable handle 30 is pulled forward (in the front direction), and the sliding portion 421 of the special-shaped hook 42 is separated from the first characteristic portion 311. At this time, the movable handle 30 and the knob 411 can be rotated and loosened at the same time. Under the action of the torsion spring 43, the sliding portion 421 of the special-shaped hook 42 falls on the second characteristic portion 312. Since the movable handle 30 is connected to the slide bar 20, the movable handle 30 rotates clockwise while driving the slide bar 20 to translate backward. When the T-shaped boss 21 on the slide bar 20 disengages from the slide rail 11 of the main body 10, the slide bar 20 continues to move backward to the limit position, and then rotates clockwise around the connection with the movable handle 30. The hook pin 22 on the rear end of the slide bar 20 slides on the plane of the upper end surface 423 of the fixing portion 422, overcoming the torsion force of the torsion spring 43 and continuing to rotate until the hook pin 22 contacts the inner surface of the hook-shaped fixing portion 422. The position of the hook pin 22 is limited, that is, the position of the slide bar 20 is fixed and forms a fixed angle with the main body 10.

[0047] like Figures 1 to 4 As shown, the main body 10 is provided with cheek screws 14; the movable handle 30 is cross-connected to the main body 10 via the cheek screws 14, and the movable handle 30 can rotate around the cheek screws 14. When the vertebral lamina rongeur needs to be disassembled, the movable handle 30 is pulled forward, and the movable handle 30 rotates clockwise around the cheek screws 14, causing the sliding portion 421 to slide from the first feature portion 311 along the end surface of the arc boss 31 into the second feature portion 312.

[0048] like Figures 1 to 4 、 Figure 8As shown, a strip hole 32 is provided on one end of the movable handle 30 connected to the slide bar 20. The slide bar 20 is connected to the movable handle 30 via a slide bar pin 23 that cooperates with the strip hole 32. That is, the movable handle 30 and the slide bar 20 are loosely connected. In other words, when the vertebral lamina rongeur is disassembled, the slide bar 20 has a reasonable amount of displacement space during the process of being driven backward by the movable handle 30. When the vertebral lamina rongeur is in the working state, the slide bar pin 23 is located below the strip hole 32, and the maximum opening position of the movable handle 30 is limited by the knob-type locking structure 40; when the vertebral lamina rongeur is in the disassembled state, the slide bar pin 23 is located above the strip hole 32. When the movable handle 30 is rotated to the limit position, the slide bar 20 also translates to the limit position.

[0049] In the embodiment of the present invention, Figures 1 to 4 As shown, a spring assembly 50 is disposed between the movable handle 30 and the main body 10. The spring assembly 50 comprises a first spring 51, a rotating portion 52, and a second spring 53. One end of the first spring 51 is fixedly connected to the movable handle 30 and the other end is connected to the rotating portion 52. One end of the second spring 53 is connected to the rotating portion 52 and the other end is detachably fixed to the main body 10. It is understood that the rotating portion 52 is a pivot. That is, the first spring 51 and the second spring 53 are relatively movable, allowing the movable handle 30 to return to its original position after being released from pressure during operation.

[0050] In a preferred embodiment, if Figure 1 As shown, a slot 15 matching the length of the second spring piece 53 is provided at a corresponding position on the main body 10, and a hole 151 is provided at the lower end of the slot 15 for receiving the second spring piece 53. When the vertebral plate rongeur is in the working state, the end of the second spring piece 53 is engaged in the hole 151; when the vertebral plate rongeur needs to be disassembled, the movable handle 30 is pulled forward, and the end of the second spring piece 53 connected to the main body 10 is separated from the hole 151; when the vertebral plate rongeur needs to be restored to the working state, the end of the second spring piece 53 can be re-engaged in the hole 151 of the slot 15. This simple structure and convenient operation.

[0051] When the detachable vertebral plate bone-cutting forceps of the embodiment of the present invention are actually used, the movable handle 30 is pulled forward and backward (that is, the user holds the main body 10 and the movable handle 30 at the same time, pressing or loosening the movable handle 30), and the strip hole 32 on the movable handle 30 contacts the slide bar pin 23 on the slide bar 20, and the movable handle 30 rotates counterclockwise around the cheek screw 14 on the main body 10, overcoming the pressure of the shrapnel assembly 50 and driving the slide bar 20 to move forward to bite the bone or soft tissue; when it is necessary to disassemble, the movable handle 30 is pulled forward, and the sliding portion 421 on the special-shaped hook 42, which was originally limited by the limit pin 13 and the first characteristic portion 311, loses the limit of the first characteristic portion 311, and the knob 411 on the knob shaft 41 can be rotated at this time, and the movable handle 30 loses the limit, and then the movable handle 30 and When the knob 411 is turned, the sliding portion 421 falls into the second characteristic portion 312, and the movable handle 30 rotates clockwise around the cheek screw 14, driving the slide bar 20 to move backward; when the T-shaped boss 21 on the slide bar 20 slides away from the slide rail 11 of the main body 10, it continues to move backward to the limit position, and the slide bar 20 rotates clockwise around the slide bar pin 23, and the hook pin 22 on the rear end of the slide bar 20 slides on the upper end plane of the fixing portion 422 of the special-shaped hook 42, and the slide bar 20 overcomes the torsion of the torsion spring 43 and continues to rotate around the slide bar pin 23 until the hook pin 22 contacts the inner side of the arc of the hook-shaped fixing portion 422. At this time, the hook pin 22 is limited, that is, the position of the slide bar 20 is fixed and forms a fixed angle with the main body 10. This is the final disassembly state of the detachable vertebral plate bone clamp. Turn the knob 411 clockwise to separate the hook-shaped fixing portion 422 on the special-shaped hook 42 from the hook pin 22 of the slide bar 20, press down the slide bar 20 and push the slide bar 20 horizontally to a certain position, and the knob 411 automatically rebounds under the action of the torsion spring 43, thereby realizing the conversion of the detachable vertebral plate bone clamp from the disassembled state to the normal working state.

[0052] 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 slide rod 20, avoid the residue of bone debris and soft tissue, reduce the possibility of cross infection, and solve the problems of difficult and time-consuming cleaning and easy loss of components of the lamina rongeur. The disassembly and assembly operation is simple and practical.

[0053] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A detachable vertebral plate rongeur, comprising a main body with a slide rail, a slide rod and a movable handle, wherein the front end of the main body is provided with a cutting edge, the slide rod is arranged above the main body, the movable handle is connected to the main body and the slide rod at the same time, and the movable handle can drive the slide rod to move along the slide rail, characterized in that: The cheek of the main body is provided with a knob-type lock structure, and the movable handle can be pulled forward and backward. A circular arc boss is raised on the rear end surface of the upper part of the movable handle, and the lower surface of the circular arc boss is connected to the circular arc of the rear end surface of the movable handle to form a first characteristic portion; the upper surface of the circular arc boss is connected to the circular arc of the rear end surface of the movable handle to form a second characteristic portion; the knob-type lock structure is tightly pressed against the first characteristic portion or the second characteristic portion; a cheek screw is provided on the main body; the movable handle is cross-connected to the main body through the cheek screw, and the movable handle can rotate around the cheek screw; The knob-type lock structure includes a knob shaft, a special-shaped hook, a torsion spring, and a limiting washer; a forward-protruding boss is formed in the middle of the front end surface of the special-shaped hook to form a sliding portion, and the sliding portion can move and tighten on the first feature portion or the second feature portion; a hook-shaped protrusion is formed on the upper end of the front end surface of the special-shaped hook to form a fixing portion, and the upper end surface of the fixing portion is flat; The cheek of the main body is provided with a hollow area, and the special-shaped hook and torsion spring are arranged in the hollow area; one end of the knob shaft is provided with a knob, and the other end of the knob shaft penetrates into the hollow area from one side of the cheek of the main body, and passes through the special-shaped hook and torsion spring in sequence, and then exits from the opposite side of the cheek of the main body, and is fixed by the limiting washer; one end of the torsion spring is fixedly connected to the special-shaped hook, and the other end is fixed to the cheek of the main body; the special-shaped hook and the knob shaft have an interference fit; When the sliding portion of the knob-type locking structure is pressed against the first characteristic portion, the movable handle can drive the sliding rod to move forward and backward along the slide rail. At this time, the vertebral plate bone picking forceps is in a working state; when the movable handle is pulled forward, the sliding portion of the knob-type locking structure is pressed against the second characteristic portion, the sliding rod leaves the slide rail, and the fixed portion is connected to the rear end of the sliding rod so that the sliding rod and the main body form a fixed angle. At this time, the vertebral plate bone picking forceps is in a disassembled state.

2. The detachable vertebral plate rongeur according to claim 1, characterized in that: A limit pin is also provided in the hollow area of ​​the cheek of the main body, which is arranged below the sliding part, and the axis of the limit pin is parallel to the axis of the knob shaft; when the vertebral plate bone clamp is in working state, the limit pin abuts against the bottom of the sliding part so that the sliding part is pressed against the first characteristic part.

3. The detachable vertebral plate rongeur according to claim 1, characterized in that: A hook pin is provided at the rear end of the slide rod, and the axis of the hook pin is parallel to the axis of the knob shaft; when the vertebral plate bone forceps are in a disassembled state, the hook-shaped fixing portion is hooked on the hook pin so that the slide rod and the main body form a fixed angle.

4. The detachable lamina rongeur according to claim 1, characterized in that: A strip hole is provided on one end of the movable handle connected to the slide rod, and the slide rod is connected to the movable handle through a slide rod pin that cooperates with the strip hole; When the vertebral plate rongeur is in the working state, the sliding rod pin is located at the lower part of the strip hole; when the vertebral plate rongeur is in the disassembled state, the sliding rod pin is located at the upper part of the strip hole.

5. The detachable lamina rongeur according to any one of claims 1 to 4, characterized in that: A spring assembly is provided between the movable handle and the main body, and the spring assembly includes a first spring, a rotating part and a second spring. One end of the first spring is fixedly connected to the movable handle, and the other end is connected to the rotating part; one end of the second spring is connected to the rotating part, and the other end is detachably fixed to the main body.

6. The detachable lamina rongeur according to claim 5, characterized in that: The main body is provided with a slot that matches the length of the second elastic piece, and the lower end of the slot is further provided with a slot hole for locking the second elastic piece.

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