A vertebral plate rongeur

Abstract

The present invention relates to the technical field of medical devices, and more specifically, to a vertebral lamina rongeur, comprising a main body with a slide rail, a slide rod connected to the main body, and a movable handle, wherein the front end of the main body is provided with a cutting edge, the movable handle abuts against the slide rod and can push the slide rod to move along the slide rail, and further comprises a locking structure provided on the main body and used to switch the vertebral lamina rongeur between a working state and a disassembled state; the locking structure comprises a first state and a second state; when the locking structure is in the first state, the movable handle remains in abutment against the slide rod under the limiting action of the locking structure, and the slide rod can move normally along the slide rail, at which point the vertebral lamina rongeur is in a working state; when the locking structure is in the second state, the movable handle can move downward, the front end of the slide rod is lifted and separated from the movable handle, and the slide rod leaves the slide rail, at which point the vertebral lamina rongeur is in a disassembled state. The present invention is easy to disassemble, clean, and disinfect, and can be cleaned without disassembling into parts, thus solving the problem of easily lost components.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and more particularly to a 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 vertebral plate rongeur that is easy to disassemble, 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] Provided is a vertebral plate rongeur, comprising a main body with a slide rail, a slide rod connected to the main body, and a movable handle, wherein the front end of the main body is provided with a cutting edge, the movable handle abuts against the slide rod and can push the slide rod to move along the slide rail, and further comprising a locking structure provided on the main body and used to switch the vertebral plate rongeur between an operating state and a disassembled state;

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

[0009] When the locking structure is in the first state, the movable handle remains in contact with the sliding rod under the limiting action of the locking structure, and the sliding rod can move normally along the slide rail. At this time, the vertebral plate bone picking forceps is in a working state; when the locking structure is in the second state, the movable handle can move downward, the front end of the sliding rod is lifted and separated from the movable handle, and the sliding rod leaves the slide rail. At this time, the vertebral plate bone picking forceps is in a disassembled state.

[0010] Furthermore, the locking structure includes a button housing, a button compression spring, and a button fixing pin. The button housing is provided with a button inner hole for accommodating the button compression spring in the axial direction, and the button housing is provided with a fixing pin hole, a first groove, and a second groove in the circumferential direction. The fixing pin hole is provided independently of the first groove and the second groove, and the first groove and the second groove are provided adjacent to each other along the axial direction of the button housing. The button fixing pin is embedded in the main body and located in the fixing pin hole.

[0011] The movable handle is provided with a special-shaped boss;

[0012] When the locking structure is in the first state, the button compression spring is in a non-compressed state, and the special-shaped boss can be movably located in the first groove. At this time, the vertebral plate bone clamp is in a working state; when the locking structure is in the second state, the button compression spring is in a compressed state, and the special-shaped boss is located in the second groove. The movable handle can move downward along the second groove. At this time, the vertebral plate bone clamp is in a disassembled state.

[0013] Furthermore, the fixing pin hole is an elongated through hole, the length direction of the fixing pin hole is parallel to the axial direction of the button housing, and the width of the fixing pin hole is just adapted to the cross-sectional diameter of the button fixing pin;

[0014] The size of the first groove is adapted to the size of the special-shaped boss;

[0015] The second groove is a long strip groove arranged along the circumference of the button housing, the second groove is connected to the first groove, and the length of the second groove is greater than the first groove;

[0016] When the button compression spring is compressed, the special-shaped boss slides from the first groove to the second groove, and the special-shaped boss can move downward along the second groove.

[0017] Furthermore, a cheek screw is provided on the main body; a strip hole is provided on one end of the movable handle connected to the main body, and the movable handle is cross-connected to the main body through the strip hole and the cheek screw; the length direction of the strip hole is matched with the direction in which the special-shaped boss moves downward along the second groove.

[0018] As an improvement, a track groove is provided on one end of the movable handle connected to the main body, the track groove is composed of a circular track groove and a linear track groove, and the linear track groove is arranged above the circular track groove; a limit pin is provided on the main body, and the movable handle moves along the track groove through the limit pin;

[0019] When the vertebral plate bone picking forceps is in the working state, the limit pin is located in the circular arc trajectory groove, and the movable handle makes a curved motion along the circular arc trajectory groove through the limit pin. At this time, the movable handle can push the slide rod to move along the slide rail; when the vertebral plate bone picking forceps is in the disassembled state, the limit pin is located in the straight line trajectory groove, and the movable handle makes a straight line motion along the straight line trajectory groove through the limit pin. At this time, the movable handle can move downward and separate from the slide rod.

[0020] Preferably, a sliding rod groove is provided at the bottom of the sliding rod, and a protrusion is provided at the connection between the movable handle and the sliding rod, and the protrusion contacts the end face of the sliding rod groove. The movable handle pushes the sliding rod to move along the sliding rail through the rotation of the protrusion and the sliding rod groove.

[0021] As an improvement, the vertebral plate bone rongeur further includes a guide structure, the guide structure includes a guide shaft, a guide compression spring and a guide limit block, one end of the guide shaft is provided with a fixed block, and the other end is a free end, the guide compression spring and the guide limit block are sequentially sleeved on the guide shaft; the top of the main body is provided with a placement groove located behind the slide rail, the front end of the placement groove is provided with a front end positioning hole, and the front end positioning hole is connected to the fixed block through a first rotating pin; the bottom of the slide rod is provided with a middle positioning hole located above the placement groove, and the middle positioning hole is connected to the guide limit block through a second rotating pin;

[0022] When the vertebral plate bone picking forceps is in a working state, the guide shaft is arranged in the placement groove, and the two ends of the guide compression spring are in a compressed state under the action of the fixed block and the guide limit block, and the movable handle can push the slide rod to move along the slide rail; when the vertebral plate bone picking forceps is in a disassembled state, the fixed block of the guide shaft remains connected to the front end positioning hole, the guide compression spring resets and pushes the guide limit block connected to the slide rod, and the free end of the guide shaft disengages from the placement groove under the action of the guide compression spring resetting, the front end of the slide rod is lifted, and the slide rod leaves the slide rail.

[0023] Preferably, the vertebral plate bone-holding forceps also include a tail limit block, which includes a head, a neck and a sliding part connected in sequence; the rear end of the bottom of the sliding rod is provided with a limiting inner hole, and the head of the tail limit block is interference fit with the limiting inner hole; the rear end of the top of the main body is provided with a T-shaped limit groove with a closed end, and the size of the neck of the tail limit block is adapted to the opening size of the T-shaped limit groove, and the sliding part can be clamped in the T-shaped limit groove and slide along the T-shaped limit groove.

[0024] Preferably, the rear end of the bottom of the sliding rod is also provided with an auxiliary boss located at the front end of the limiting inner hole, and the rear end of the top of the main body is also provided with an arc inclined surface located at the front end of the T-shaped limiting groove, and the auxiliary boss can slide along the arc inclined surface during the process of lifting the front end of the sliding rod.

[0025] Preferably, the bottom of the slide rod is provided with a first T-shaped boss that can move along the slide rail, and the front end of the bottom of the slide rod is provided with a T-shaped slot; the front end of the top of the main body is provided with a second T-shaped boss located behind the cutting edge, and the second T-shaped boss is adapted to the T-shaped slot.

[0026] Compared with the prior art, the vertebral lamina bone rongeur of the present invention can be automatically disassembled, and a locking structure is provided on the main body which can conveniently switch the working state or disassembly state of the vertebral lamina bone rongeur. After use, it is only necessary to press the locking structure and then pull down the handle to separate the sliding rod from the sliding rail, that is, the front end of the sliding rod is lifted and automatically separated from the main body; when it is necessary to switch back to the working state, it is only necessary to press down the sliding rod and then push the handle upward to the limit position, and the locking structure will be reset to restore the vertebral lamina bone rongeur to the working state.

[0027] The structural design of the vertebral plate bone 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 vertebral plate bone rongeur and easy loss of components. It is simple to disassemble and assemble and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is one of the schematic diagrams of the working state of the vertebral plate rongeur in one embodiment of the present invention.

[0029] Figure 2 This is the second schematic diagram of the working state of the vertebral plate rongeur in one embodiment of the present invention.

[0030] Figure 3 Schematic diagram of the disassembled state of the vertebral plate rongeur in one embodiment of the present invention.

[0031] Figure 4 Schematic diagram of the structure of a sliding rod in one embodiment of the present invention.

[0032] Figure 5 It is a structural diagram of the main body in one embodiment of the present invention.

[0033] Figure 6 Schematic diagram of an exploded view of a locking structure in one embodiment of the present invention.

[0034] Figure 7 Schematic diagram of the structure of a button housing in one embodiment of the present invention.

[0035] Figure 8 Schematic diagram of the structure of a movable handle in one embodiment of the present invention.

[0036] Figure 9 This is a partial schematic diagram of the lamina rongeur in a disassembled state according to one embodiment of the present invention.

[0037] Figure 10Schematic diagram of the structure of the guide shaft in one embodiment of the present invention.

[0038] Figure 11 Schematic diagram of the structure of the guide limit block in one embodiment of the present invention.

[0039] Figure 12 Schematic diagram of the structure of the tail limit block in one embodiment of the present invention.

[0040] Figure 13 It is a partial schematic diagram of the main body in one embodiment of the present invention. DETAILED DESCRIPTION

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] like Figures 1 to 13The figure shows an embodiment of a vertebral rongeur according to the present invention. The rongeur comprises a main body 10 with a slide rail 11, a slide rod 20 connected to the main body 10, and a movable handle 30. The figure also includes a locking structure 40 disposed on the main body 10 and used to switch the rongeur between the operating and disassembled states. The main body 10 has a cutting edge 12 at its front end, and the movable handle 30 abuts against the slide rod 20 and can push the slide rod 20 along the slide rail 11. The locking structure 40 has a first state and a second state.

[0046] like Figure 1 、 Figure 2 As shown, when the locking structure 40 is in the first state, the movable handle 30 is kept in contact with the slide bar 20 under the limiting action of the locking structure 40. The user holds the main body 10 and the movable handle 30 at the same time, and presses or releases the movable handle 30 to make the slide bar 20 move back and forth normally along the slide rail 11. At this time, the vertebral plate bone rongeur is in the working state;

[0047] like Figure 3 As shown, when the locking structure 40 is in the second state, the movable handle 30 can be moved downward. The user pulls down the handle 30 to the extreme position, and the movable handle 30 is separated from the slide rod 20. The front end of the slide rod 20 is lifted, and the slide rod 20 leaves the slide rail 11. At this time, the vertebral plate bone clamp is in a disassembled state.

[0048] It should be noted that in this embodiment, the front end of the vertebral lamina rongeur is shown in the working direction; for ease of operation, the locking structure 40 is generally provided in the cheek area of ​​the main body 10. The vertebral lamina rongeur of the embodiment of the present invention can be automatically disassembled. The main body 10 is provided with a locking structure 40 that can conveniently switch the working state or disassembly state of the vertebral lamina rongeur. After use, it is only necessary to press the locking structure 40 and then pull down the handle 30 to separate the slide bar 20 from the slide rail 11, that is, the front end of the slide bar 20 is lifted and automatically separated from the main body 10; when it is necessary to switch back to the working state, it is only necessary to press down the slide bar 20 and then push the handle 30 upward to the limit position, and the locking structure 40 is reset to restore the vertebral lamina rongeur to the working state.

[0049] like Figure 1 、 Figure 2 、 Figure 6 、 Figure 7 and Figure 8As shown, the locking structure 40 includes a button housing 41, a button compression spring 42 and a button fixing pin 43. The button housing 41 is provided with a button inner hole 411 in the axial direction for placing the button compression spring 42. The button housing 41 is provided with a fixing pin hole 412, a first groove 413 and a second groove 414 in the circumferential direction. The fixing pin hole 412 is provided independently of the first groove 413 and the second groove 414. The first groove 413 and the second groove 414 are provided adjacent to each other along the axial direction of the button housing 41. The button fixing pin 43 is embedded in the main body 10 and is located in the fixing pin hole 412. Figure 8 As shown, a special-shaped boss 31 is provided on the movable handle 30. When the locking structure 40 is in the first state, the button compression spring 42 is in a non-compressed state, and the special-shaped boss 31 is movably located in the first groove 413. In this case, the vertebral plate bone rongeur is in an operating state. When the locking structure 40 is in the second state, the button compression spring 42 is in a compressed state, and the special-shaped boss 31 is located in the second groove 414. The movable handle 30 can move downward along the second groove 414. In this case, the vertebral plate bone rongeur is in a disassembled state.

[0050] That is, in actual use, when the vertebral plate rongeur is in the working state, the movable handle 30 is pressed to push the slide bar 20 forward, at which time the special-shaped boss 31 on the movable handle 30 is separated from the first groove 413; when the movable handle 30 is released, the slide bar 20 moves backward to reset, at which time the special-shaped boss 31 on the movable handle 30 is located in the first groove 413;

[0051] When the vertebral plate bone rongeur is switched from the working state to the disassembly state, the movable handle 30 is loosened and the button housing 41 is pressed. Under the action of the button fixing pin 43, the button housing 41 is embedded in the main body 10 along the fixing pin hole 412. At the same time, the special-shaped boss 31 on the movable handle 30 enters the second groove 414 from the first groove 413, and the special-shaped boss 31 can move downward along the second groove 414, that is, the movable handle 30 can be pulled down to the limit position; at this time, the axial position of the button housing 41 is also limited by the special-shaped boss 31, and the button compression spring 42 is in a compressed state;

[0052] When the vertebral plate bone-holding forceps are switched from the disassembled state to the working state, the handle 30 is pushed upward to the extreme position, that is, the special-shaped boss 31 moves from the lower end of the second groove 414 to the upper end. At this time, the button compression spring 42 is reset, and the special-shaped boss 31 re-enters the first groove 413 from the second groove 414, that is, the button shell 41 pops out of the main body 10 along the fixing pin hole 412 under the action of the button fixing pin 43.

[0053] In a preferred embodiment, if Figure 6 、 Figure 7As shown, the fixing pin hole 412 is an elongated through-hole. Its length is parallel to the axial direction of the button housing 41, and its width precisely matches the cross-sectional diameter of the button fixing pin 43. This allows for smoother pressing and resetting of the button housing 41, maximizing the effectiveness of the button compression spring 42 and minimizing mechanical loss. Furthermore, the dimensions of the first groove 413 match those of the profiled boss 31. The second groove 414 is an elongated groove extending along the circumference of the button housing 41. The second groove 414 is connected to the first groove 413 and is longer than the first groove 413. It is understood that to accommodate the displacement trajectory of the profiled boss 31, the first groove 413 should be positioned above the second groove 414. That is, when the button compression spring 42 is compressed, the profiled boss 31 slides from the first groove 413 to the second groove 414, allowing it to move downward along the second groove 414.

[0054] like Figure 1 As shown, in order to facilitate the fixing of the movable handle 30 while pulling down or pushing the handle 30 up, a cheek screw 13 can also be provided on the main body 10, and a strip hole 32 is provided on one end where the movable handle 30 is connected to the main body 10. The movable handle 30 is cross-connected to the main body 10 through the strip hole 32 and the cheek screw 13, and the length direction of the strip hole 32 is matched with the direction in which the special-shaped boss 31 moves downward along the second groove 414. When the movable handle 30 is pulled down, the movable handle 30 is simultaneously restricted by the second groove 414 and the strip hole 32, and the operation is more stable.

[0055] As an improved embodiment, a track groove may be further provided on one end of the movable handle 30 connected to the main body 10. Figure 8 As shown, the track groove is composed of a circular arc track groove 33 and a straight track groove 34, and the straight track groove 34 is arranged above the circular arc track groove 33; Figure 1 As shown, the main body 10 is provided with a limit pin 14, through which the movable handle 30 moves along the trajectory groove. In actual use, when the vertebral lamina rongeur is in the working state, the limit pin 14 is located in the circular arc trajectory groove 33, and the movable handle 30 moves along the circular arc trajectory groove 33 through the limit pin 14. At this time, pressing the movable handle 30 can push the slide bar 20 to move along the slide rail 11. When the vertebral lamina rongeur needs to be switched from the working state to the disassembly state, pressing the locking structure 40 and pulling the handle 30 downward causes the limit pin 14 to move from the circular arc trajectory groove 33 into the linear trajectory groove 34. That is, the movable handle 30 moves linearly along the linear trajectory groove 34 through the limit pin 14 to achieve the pull-down operation, and the movable handle 30 is separated from the slide bar 20. It can be understood that the linear trajectory groove 34 is vertically above the circular arc trajectory groove 33 to facilitate the up and down movement of the movable handle 30.

[0056] like Figure 1 、 Figure 2 、 Figure 4 and Figure 8 As shown, a slide bar groove 21 is provided at the bottom of the slide bar 20, and a protrusion 35 is provided at the connection between the movable handle 30 and the slide bar 20, and the protrusion 35 contacts the end surface of the slide bar groove 21. When the vertebral plate bone rongeur is in the working state, the movable handle 30 cannot move up and down under the restraining effect of the locking structure 40. The movable handle 30 can push the slide bar 20 to move along the slide rail 11 through the rotational contact between the protrusion 35 and the slide bar groove 21. When the vertebral plate bone rongeur needs to be switched from the working state to the disassembly state, the locking structure 40 is pressed and the handle 30 is pulled down, so that the protrusion 35 separates from the slide bar groove 21, that is, the movable handle 30 is separated from the slide bar 20.

[0057] In order to ensure that the slide rod 20 can open to a certain angle when it leaves the slide rail 11 and separates from the main body 10 without disassembling the parts, the vertebral plate rongeurs of the embodiment of the present invention are also provided with a guide structure 50. Figure 1 、 Figure 2 、 Figure 3 、 Figure 9 、 Figure 10 and Figure 11 As shown, the guide structure 50 includes a guide shaft 51, a guide compression spring 52, and a guide stop block 53. The guide shaft 51 has a fixed block 511 at one end and a free end at the other. The guide compression spring 52 and the guide stop block 53 are sequentially sleeved on the guide shaft 51. Furthermore, a placement groove 15 is provided behind the slide rail 11 at the top of the main body 10. A front positioning hole 16 is provided at the front end of the placement groove 15. The front positioning hole 16 is connected to the fixed block 511 via a first rotating pin 17. Figure 4 As shown, a middle positioning hole 22 located above the placement groove 15 is provided at the bottom of the slide rod 20 , and the middle positioning hole 22 is connected to the guide limit block 53 via a second rotating pin 18 .

[0058] When the vertebral lamina rongeur is in operation, the guide shaft 51 is disposed within the placement slot 15, and the two ends of the guide compression spring 52 are compressed under the action of the fixing block 511 and the guide stop block 53, allowing the movable handle 30 to push the slide bar 20 along the slide rail 11. When the vertebral lamina rongeur is in disassembly, the fixing block 511 of the guide shaft 51 remains connected to the front end positioning hole 16, and the guide compression spring 52 resets and pushes the guide stop block 53, which remains connected to the slide bar 20. The free end of the guide shaft 51 is disengaged from the placement slot 15 under the action of the guide compression spring 52, and the front end of the slide bar 20 is lifted, and the slide bar 20 leaves the slide rail 11. In other words, the distance between the middle positioning hole 22 and the front end positioning hole 16 should be less than the length of the guide compression spring 52 when it is in a non-compressed state, so that the guide compression spring 52 can reset and push the guide stop block 53 when the vertebral lamina rongeur is disassembled.

[0059] In addition, if Figure 1、 Figure 2 、 Figure 3 、 Figure 9 and Figure 12 As shown, the vertebral plate rongeur also includes a tail stopper 60, which includes a head 61, a neck 62, and a sliding portion 63 connected in sequence. The rear end of the bottom of the slide bar 20 is provided with a limit inner hole 23, and the head 61 of the tail stopper 60 is interference fit with the limit inner hole 23. The rear end of the top of the main body 10 is provided with a T-shaped limit slot 19 with a closed end. The size of the neck 62 of the tail stopper 60 is adapted to the opening size of the T-shaped limit slot 19. The sliding portion 63 is larger than the size of the neck 62 and can be snapped into the T-shaped limit slot 19 and slide along the T-shaped limit slot 19. When the vertebral plate rongeur is disassembled, the front end of the slide bar 20 is raised, and the rear end is limited by the tail stopper 60 to prevent the slide bar 20 from sliding out. During actual manufacturing, the tail limit block 60 can be composed of a cylindrical structure, that is, the head 61 and the neck 62 are two cylinders with overlapping central axes, and the cross-sectional diameter of the head 61 is larger than the cross-sectional diameter of the neck 62, and the sliding part 63 is a cylindrical pin feature with the central axis perpendicular to the central axis of the neck 62. This design can facilitate the installation or disassembly of the tail limit block 60 and is convenient to use.

[0060] As an improved embodiment, Figure 3 、 Figure 4 、 Figure 5 、 Figure 9 and Figure 13 As shown, an auxiliary boss 24 located at the front end of the limiting inner hole 23 can also be provided at the rear end of the bottom of the slide rod 20, and an arc slope 101 located at the front end of the T-shaped limiting groove 19 can be correspondingly provided at the rear end of the top of the main body 10. When the vertebral plate bone-holding forceps are removed, the auxiliary boss 24 can slide along the arc slope 101 during the process of lifting the front end of the slide rod 20 to assist in positioning the lifting angle of the slide rod 20.

[0061] In the embodiment of the present invention, Figures 1 to 5 As shown, the bottom of the slide bar 20 is provided with a first T-shaped boss 25 that can move along the slide rail 11, and the front end of the bottom of the slide bar 20 is provided with a T-shaped slot 26. The front end of the top of the main body 10 is provided with a second T-shaped boss 102 located behind the cutting edge 12, and the second T-shaped boss 102 is adapted to fit into the T-shaped slot 26. This design ensures that when the vertebral plate rongeur is in operation, the slide bar 20 is connected to the main body 10 and can move back and forth along the slide rail 11 without deviation.

[0062] When the vertebral plate bone-gnawing 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). As shown in the figure, the upper left side of the movable handle 30, that is, the protrusion 35, contacts the end face of the slide bar groove 21. The movable handle 30 rotates counterclockwise around the arc trajectory groove 33 under the action of the limit pin 14, and at the same time overcomes the pressure of the guide compression spring 52 in the guide structure 50, driving the slide bar 20 to move toward the front end along the slide rail 11, and the vertebral plate bone-gnawing forceps bites and cuts bones or soft tissues; when the vertebral plate bone-gnawing forceps needs to be disassembled, the movable handle 30 is loosened, the button housing 41 of the locking structure 40 is pressed, and the handle 30 is pulled down to separate from the slide bar groove 21. The slide bar 20 loses its limit, and the guide compression spring 52 on the guide structure 50 pushes open the guide When the guide rod 20 is in the process of moving backward, the auxiliary boss 24 at the rear end of the bottom of the slide rod 20 is slightly lifted upward by the arc inclined surface 101 at the rear end of the top of the main body 10, and the guide shaft 51 rotates counterclockwise around the first rotating pin 17 and forms an angle with the main body 10. At the same time, the guide limit block 53 rotates counterclockwise around the second rotating pin 18, so that the slide rod 20 and the main body 10 also form an angle; the guide compression spring 52 continues to be pushed out, the slide rod 20 continues to retreat, and the angle increases until the tail limit block 60 slides to the end of the closed T-shaped limit groove 19 at the rear end of the top of the main body 10 and is limited. The slide rod 20 forms a fixed angle with the main body 10. This is the final disassembled state of the vertebral plate bone clamp, which can be cleaned and disinfected.

[0063] The vertebral lamina rongeur of the present invention can thoroughly clean and disinfect the gap between the main body 10 and the slide rod 20, avoiding the residue of bone debris and soft tissue, reducing the possibility of cross infection, and solving the problems of difficult and time-consuming cleaning and easy loss of components of the vertebral lamina rongeur. The vertebral lamina rongeur of the present invention is simple to assemble and disassemble and has strong practicality.

[0064] 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 vertebral plate rongeur, comprising a main body with a slide rail, a slide rod connected to the main body, and a movable handle, wherein the front end of the main body is provided with a cutting edge, the movable handle abuts against the slide rod and can push the slide rod to move along the slide rail, characterized in that: It also includes a locking structure provided on the main body and used to switch the vertebral plate rongeur between the working state and the disassembly state; the movable handle is provided with a special-shaped boss; The locking structure includes a button housing, a button compression spring, and a button fixing pin. The button housing is provided with a button inner hole in the axial direction for accommodating the button compression spring. The button housing is provided with a fixing pin hole, a first groove, and a second groove in the circumferential direction. The fixing pin hole is provided independently of the first groove and the second groove. The first groove and the second groove are provided adjacent to each other along the axial direction of the button housing. The button fixing pin is embedded in the main body and is located in the fixing pin hole. The locking structure includes a first state and a second state; When the locking structure is in the first state, the button compression spring is in a non-compressed state, the special-shaped boss is movably located in the first groove, the movable handle is kept in contact with the slide rod under the limiting action of the locking structure, and the slide rod can move normally along the slide rail. At this time, the vertebral plate bone rongeur is in a working state; When the locking structure is in the second state, the button compression spring is in a compressed state, the special-shaped boss is located in the second groove, the movable handle can move downward along the second groove, the front end of the slide rod is lifted and separated from the movable handle, and the slide rod leaves the slide rail. At this time, the vertebral plate bone rongeur is in a disassembled state; A track groove is provided on one end of the movable handle connected to the main body, and the track groove is composed of a circular track groove and a linear track groove, and the linear track groove is arranged above the circular track groove; a limit pin is provided on the main body, and the movable handle moves along the track groove through the limit pin; When the vertebral plate bone-holding forceps is in the working state, the limit pin is located in the circular arc track groove. At this time, the movable handle can push the slide rod to move along the slide rail; when the vertebral plate bone-holding forceps is in the disassembled state, the limit pin is located in the straight line track groove. At this time, the movable handle can move downward to separate from the slide rod.

2. The vertebral plate rongeur according to claim 1, characterized in that: The fixing pin hole is a long strip through hole, the length direction of the fixing pin hole is parallel to the axial direction of the button housing, and the width of the fixing pin hole is just adapted to the cross-sectional diameter of the button fixing pin; The size of the first groove is adapted to the size of the special-shaped boss; The second groove is a long strip groove arranged along the circumference of the button housing, the second groove is connected to the first groove, and the length of the second groove is greater than that of the first groove; When the button compression spring is compressed, the special-shaped boss slides from the first groove to the second groove, and the special-shaped boss can move downward along the second groove.

3. The vertebral plate rongeur according to claim 2, characterized in that: The main body is provided with a cheek screw; a strip hole is provided on one end of the movable handle connected to the main body, and the movable handle is cross-connected to the main body through the strip hole and the cheek screw; The length direction of the strip-shaped hole matches the direction in which the special-shaped boss moves downward along the second groove.

4. The vertebral plate rongeur according to claim 1, characterized in that: A slide bar groove is provided at the bottom of the slide bar, and a protrusion is provided at the connection between the movable handle and the slide bar. The protrusion contacts the end face of the slide bar groove, and the movable handle pushes the slide bar to move along the slide rail through the rotation of the protrusion and the slide bar groove.

5. The vertebral plate rongeur according to claim 1, characterized in that: The guide structure further comprises a guide shaft, a guide compression spring and a guide limit block, wherein one end of the guide shaft is provided with a fixed block and the other end is a free end, and the guide compression spring and the guide limit block are sequentially sleeved on the guide shaft; The top of the main body is provided with a placement groove located behind the slide rail, the front end of the placement groove is provided with a front positioning hole, and the front positioning hole is connected to the fixed block through a first rotating pin; The bottom of the slide rod is provided with a central positioning hole located above the placement groove, and the central positioning hole is connected to the guide limit block via a second rotating pin; When the vertebral plate bone rongeur is in a working state, the guide shaft is arranged in the placement groove, and the two ends of the guide compression spring are in a compressed state under the action of the fixed block and the guide limit block; when the vertebral plate bone rongeur is in a disassembled state, the guide compression spring is reset and pushes the guide limit block, and the free end of the guide shaft is disengaged from the placement groove under the action of the guide compression spring resetting, and the front end of the slide rod is lifted.

6. The lamina rongeur according to claim 5, characterized in that: It also includes a tail stopper, which includes a head, a neck, and a sliding portion connected in sequence; A limiting inner hole is provided at the rear end of the bottom of the slide rod, and the head of the tail limiting block is interference-fitted with the limiting inner hole; The rear end of the top of the main body is provided with a T-shaped limit groove with a closed end. The size of the neck of the tail limit block is adapted to the opening size of the T-shaped limit groove. The sliding part can be clamped in the T-shaped limit groove and slide along the T-shaped limit groove.

7. The lamina rongeur according to claim 6, characterized in that: The rear end of the bottom of the slide rod is also provided with an auxiliary boss located at the front end of the limiting inner hole, and the rear end of the top of the main body is also provided with an arc inclined surface located at the front end of the T-shaped limiting groove. The auxiliary boss can slide along the arc inclined surface during the lifting process of the front end of the slide rod.

8. The lamina rongeur according to any one of claims 1 to 7, characterized in that: The bottom of the slide rod is provided with a first T-shaped boss that can move along the slide rail, and the front end of the bottom of the slide rod is provided with a T-shaped slot; the front end of the top of the main body is provided with a second T-shaped boss located behind the cutting edge, and the second T-shaped boss is adapted to the T-shaped slot.

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