Removable rongeur

Abstract

The present invention relates to a removable rongeur comprising a body, a slider and a movable handle. The body is provided with a cutting edge at a front end. The movable handle is hinged to both the body and the slider. The movable handle can drive the slider to move it along a first sliding groove. The body is provided with a trigger lock catch structure at a cheek. The movable handle can be pulled back and forth. The movable handle is provided with a first feature and a second feature arranged in order from bottom to top at an upper portion. The trigger lock catch structure abuts against the first feature or the second feature.

Description

[Technical field]

[0001] The present invention relates to the technical field of medical instruments, and in particular to a removable rongeur. [Background technology]

[0002] In clinical operations, especially in neurosurgery, a rongeur surgical instrument, especially a rongeur surgical instrument for laminectomy, is usually required to cut small bones and soft tissues. However, existing rongeurs still have some problems. Most of the conventional rongeurs cannot be disassembled and are washed as a whole. As a result, it is difficult to completely wash away bone debris, blood, tissue, etc. remaining in the gap, which may cause serious consequences such as cross-infection after long-term use.

[0003] Currently, the detachable bone rongeurs available on the market can only be disassembled into parts for cleaning, which requires more assembly and disassembly time, is not conducive to quick exchange of instruments, and has requirements for placement position. When cleaning and sterilizing many surgical instruments, it takes a lot of time to find the paired slider and body, and there is also a risk of losing them.

[0004] In all existing rongeurs, the spring pieces are fixed to the rongeur by screws, making it difficult to clean the fixing points, and since the spring consists of a left piece and a right piece that are hinged or cross-connected, it is difficult to clean all of the connections.

[0005] Therefore, there is a need to provide a more applicable removable rongeur, especially a removable laminectomy rongeur, to solve the above problems. Summary of the Invention

[0006] The objective of the present invention is to provide a removable rongeur, in particular a removable laminectomy rongeur, which has the advantages of being removable, easy to clean, and quick to assemble and disassemble, and solves the problems that cleaning the rongeur is difficult and time-consuming, and the pair structure is easy to lose.

[0007] To achieve the above objectives, the present invention uses the following technical solutions:

[0008] The present invention provides a removable rongeur, and in particular, a removable laminectomy rongeur, comprising a body, a slider, and a movable handle. The upper part of the body is provided with a first sliding groove. The slider is located on the upper part of the body. The end surface of the slider facing the body is provided with a first boss embedded in the first sliding groove. The front end of the body is provided with a cutting edge. The movable handle is hinged to both the body and the slider. The movable handle can drive the slider to move it along the first sliding groove. The cheek of the body is provided with a trigger lock catch structure. The movable handle can be pulled back and forth. The upper part of the movable handle is provided with a first feature and a second feature arranged in order from bottom to top. The trigger lock catch structure abuts against the first feature or the second feature.

[0009] When the trigger lock catch structure abuts the first feature, the movable handle can move the slider back and forth along the first slide groove, in which case the rongeur is in an activated state.

[0010] When the movable handle is pulled forward, the trigger lock catch structure abuts against the second feature, the slider is disengaged from the first slide groove, and under the restricting action of the trigger lock catch structure, the slider forms a certain angle with respect to the body, and the rongeur is in a disassembled state.

[0011] Preferably, the rear end surface of the upper part of the movable handle protrudes to form an arc boss. The lower surface of the arc boss is connected to the rear end surface of the movable handle by an arc transition connection to form the first feature. The upper surface of the arc boss is connected to the rear end surface of the movable handle by an arc transition connection to form the second feature. The first sliding part can move over the first feature or the second feature and can abut against the first feature or the second feature.

[0012] Preferably, the trigger lock catch structure is provided with a first sliding portion, a second sliding portion and a trigger portion, which are arranged in sequence from left to right.

[0013] The first slider abuts a first feature of the movable handle when the rongeur is in an actuated state, the first slider abuts a second feature of the movable handle when the rongeur is in a disassembled state, and the trigger is connected to a rear end of the slider such that the slider is at an angle relative to the body.

[0014] Preferably, the trigger lock catch structure comprises a trigger member, a trigger screw, and a torsion spring attached to the trigger screw, the cheek of the body is provided with a recessed area in which the torsion spring is located, and the trigger screw extends from one side of the cheek of the body to the opposite side of the cheek of the body.

[0015] Preferably, the trigger member includes a trigger portion. The trigger portion is a key-shaped member, and the upper surface of the trigger portion is a flat surface. An end portion of the trigger portion near the movable handle extends toward the movable handle to form a third boss. An end surface of the third boss that contacts the movable handle constitutes a first sliding portion. An arc surface provided at a lower portion of the third boss and facing the inside of the third boss constitutes a second sliding portion. The first sliding portion abuts and contacts the first characteristic portion or the second characteristic portion, and the second sliding portion abuts the torsion spring.

[0016] Preferably, the body further includes a limiting pin in the recessed region of the cheek. The limiting pin is disposed below the first slide. The limiting pin has an axis parallel to the axis of the trigger screw. One end of the torsion spring abuts the limiting pin. The other end of the torsion spring abuts the second slide. The limiting pin abuts a lower portion of the first slide such that the first slide abuts the first feature when the rongeur is in an actuated state.

[0017] Preferably, the body is provided with a central screw. The movable handle is hinged to the body by the central screw. The movable handle is rotatable about the central screw.

[0018] Preferably, the end of the movable handle that is connected to the slider is provided with a kidney-shaped hole. The slider is connected to the movable handle by a slider screw that cooperates with the kidney-shaped hole. When the rongeur is in the activated state, the slider screw is located in the center of the kidney-shaped hole. When the rongeur is in the disassembled state, the slider screw is located at the top of the kidney-shaped hole.

[0019] Preferably, a leaf spring, particularly a V-shaped spring, is provided between the movable handle and the body, one end of the leaf spring is connected to the movable handle and the other end of the leaf spring is connected to the body, the leaf spring being of integrally formed structure.

[0020] Preferably, the movable handle and the main body are provided with opposing clamping portions, and the leaf spring is provided with fastening portions at both ends thereof, the fastening portions being detachably and fixedly connected to the clamping portions as a whole.

[0021] Preferably, the clamping part includes two clamping pieces parallel to each other. A clamping groove is formed between the two clamping pieces. Through holes are provided corresponding to the two clamping pieces. Notches are provided on the outer edges of the through holes and the clamping pieces. The clamping part is clamped into the through holes through the notches.

[0022] Preferably, each fastener comprises a symmetrical extension formed by the ends of the leaf spring extending towards the outside of the leaf spring, the two extensions forming a T-structure with the ends of the leaf spring, the extensions being clamped in the through holes.

[0023] Preferably, a first slide groove is provided at each of the front and rear parts of the upper part of the main body. A corresponding first boss is provided at each of the front and rear parts of the slider. A second slide groove is provided on an end face of the slider between the two first bosses facing the main body. A second boss is provided on the main body between the two first slide grooves and is embedded in the second slide groove.

[0024] Preferably, the main body and the holding portion of the movable handle are each provided with an anti-slip line.

[0025] Preferably, the end of the slider proximate the trigger lock catch structure is configured to be a smoothly curved surface, the curvature of the curved surface being a minimum at the highest point of the curved surface.

[0026] The removable rongeur of the present invention has the following advantages.

[0027] Compared with the prior art, the bone rongeur has a disassembly function. After the surgical operation is completed, rotate the handle, lightly press down the trigger, loosen the handle, and the slider automatically slides backward to the final position, and the slider rotates upward so that the slider opens and forms an angle with the body for tightly cleaning and disinfecting the gap between the body and the slider. In addition, the leaf spring is integrally formed and connected to the body and the handle by fasteners without screws. This avoids bone residue and soft tissue residue and reduces the occurrence of cross-infection. After cleaning is completed, close the slider along the guide groove of the body, and close the handle, and the torsion spring automatically returns the trigger and enters the normal working state. The bone rongeur is easy to operate and has high practicality. [Brief description of the drawings]

[0028] [Figure 1]FIG. 1 is a first schematic diagram of a removable laminectomy rongeur in a normal operating position. [Diagram 2] FIG. 2 is a second schematic diagram of the removable laminectomy rongeur in a normal operating position. [Diagram 3] FIG. 2 is a first schematic diagram of a removable laminectomy rongeur in a disassembled state. [Figure 4] FIG. 13 is a second schematic diagram of the removable laminectomy rongeur in a disassembled state. [Diagram 5] FIG. 13 is a third schematic view of the removable laminectomy rongeur in a disassembled state. [Figure 6] FIG. 13 is a structural schematic of the slider, body and trigger structure of the removable laminectomy rongeur. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] The present invention will be further described below in connection with specific embodiments. The drawings are used for illustrative purposes only, are merely schematic diagrams rather than physical drawings, and should not be construed as limiting the present invention. In order to better explain the embodiments of the present invention, some components may be omitted, enlarged or reduced in the drawings, and do not represent the actual dimensions of the product. Those skilled in the art should understand that some well-known structures and their illustrations in the drawings may be omitted.

[0030] In addition, the same or similar symbols 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 the directions and positional relationships indicated by terms such as "upper", "lower", "vertical", "horizontal", "lateral", and "vertical" are based on the directions and positional relationships shown in the drawings. The directions and positional relationships are intended only to facilitate and simplify the description of the present invention. They do not indicate or suggest that the devices or elements referred to must have a specific direction or must be constructed and operated in a specific orientation. Therefore, the terms for describing the positional relationships in the drawings are merely illustrative and should not be construed as limiting the present invention.

[0031] In addition, some of the above terms may be used in other senses in addition to the direction or positional relationship. For example, the term "on" may be used to indicate a specific mounting or connection relationship depending on the situation. For those skilled in the art, the specific meanings of the above terms in the present invention may be interpreted according to the specific situation.

[0032] Furthermore, terms such as "first", "second", etc. are used for descriptive purposes only and are primarily used to distinguish between different devices, elements or components (which may be the same or different in specific type and structure). The terms are used to indicate or suggest the relative importance and quantity of the indicated devices, elements or components and should not be construed as indicating or suggesting relative importance.

[0033] 1 to 6 show an embodiment of the removable laminectomy rongeur of the present invention. The removable laminectomy rongeur provided in the present invention includes a body 20, a slider 10, and a movable handle 30. Anti-slip lines are provided on the holding parts of the body 20 and the movable handle 30, respectively. They increase friction with the contact surface to make it easier for the user to hold. A first sliding groove 22 is provided on the upper part of the body 20. The slider 10 is located on the upper part of the body 20. A first sliding groove 22 is provided on the end surface of the slider 10 facing the body 20. A first boss 11 is embedded in the first sliding groove 22. A cutting edge 21 is provided on the front end of the body 20. The movable handle 30 is attached to both the body 20 and the slider 10 by a hinge. The movable handle 30 may drive the slider 10 to move the slider 10 along the first sliding groove 22. A trigger lock catch structure is provided on the cheek of the main body 20. The movable handle 30 may be pulled back and forth. As shown in FIG. 6, a first feature 311 and a second feature 312 are provided on the upper part of the movable handle 30, which are arranged from bottom to top. The trigger lock catch structure abuts against the first feature 311 or the second feature 312. It should be noted that in this embodiment, the laminectomy rongeur takes the working direction as the front end, and the first feature 311 and the second feature 312 are not limited to only certain point features, but may also be surface features or line features.

[0034] When the trigger lock catch structure abuts against the first feature 311, the movable handle 30 may drive the slider 10 to move the slider 10 back and forth along the first sliding groove 22. In this case, the laminectomy rongeur is in an actuated state. It will be understood that when the laminectomy rongeur is actuated, the movable handle 30 may move relative to the body 20 while being connected to the body 20, i.e., when a user holds the laminectomy rongeur by hand, pushing and releasing the movable handle 30 may move the slider 10 back and forth to achieve the operation of piercing and cutting soft tissue. When the movable handle 30 is pulled forward, i.e., when the handle 30 needs to be released from the normal actuated state, the trigger lock catch structure is converted from the first feature 311 to abut against the second feature 312, and the slider 10 leaves the first sliding groove 22. Under the restrictive action of the trigger lock catch structure, the slider 10 forms a certain angle with respect to the body 20, in which case the laminectomy tool is in a disassembled state.

[0035] In addition, in this embodiment, the trigger lock catch structure is provided with a first sliding part 41, a second sliding part 42, and a trigger part 40. These are provided in order from left to right in actual production to facilitate molding, assembly, and disassembly. This part of the structure may be formed integrally, which improves the stability of the entire member. When the laminectomy rongeur is in an actuated state, the first sliding part 41 abuts against the first feature part 311 of the movable handle 30. When the laminectomy rongeur is in a disassembled state, the first sliding part 41 abuts against the second feature part 312 of the movable handle 30, and the trigger part 40 is connected to the rear end of the slider 10 such that the slider 10 forms a certain angle with the main body 20. More specifically, the rear end surface of the upper part of the movable handle 30 is protruded as a circular arc boss 31, and the lower surface of the circular arc boss 31 protrudes to form the circular arc boss 31. The lower surface of the arc boss 31 is connected to the rear end surface of the movable handle 30 by an arc transition to form a first feature 311. The upper surface of the arc boss 31 is connected to the rear end surface of the movable handle 30 by an arc transition to form a second feature 312. The first sliding part 41 can move on the first feature 311 or the second feature 312 and can abut against the first feature 311 or the second feature 312. When the entire structure is in the cleaning state, the trigger part 40 is slowly rotated so that the rear part of the slider 10 is located below the trigger part 40. Then, under the operation of the trigger part 40, the trigger part 40 is released so that the slider 10 is restricted to the cleaning state and the rongeur can be kept open at a certain angle in the cleaning state. The rongeur will not close abnormally during cleaning, which makes it easier to clean, disinfect and sterilize, and more convenient to use.

[0036] Further, in this embodiment, the trigger lock catch structure includes a trigger member 43, a trigger screw 70, and a torsion spring 60 fitted into the trigger screw 70. The trigger member 43 is connected to the main body 20 by the trigger screw 70 with a clearance fit. The trigger member 43 is rotatable around the trigger screw 70. A concave area is provided in the cheek portion of the main body 20 in which the torsion spring 60 is disposed. The trigger screw 70 penetrates from one side of the cheek portion of the main body 20 to the other opposite side of the cheek portion of the main body 20. Specifically, the trigger member 43 includes a trigger portion 40. The trigger portion 40 is a key-shaped member having a flat upper surface. The flat upper surface makes it convenient for the user's thumb to contact the flat upper surface of the trigger portion 40, which contributes to applying force to the trigger portion 40. The structure can be conveniently operated with one hand during use. The end of the trigger part 40 near the movable handle 30 extends toward the movable handle 30 to form a third boss 44. The end surface of the third boss 44 that contacts the movable handle 30 forms a first sliding part 41. The arc-shaped surface provided at the lower part of the third boss 44 and facing the inside of the third boss 44 forms a second sliding part 42. The first sliding part 41 abuts the first characteristic part 311 or the second characteristic part 312. The second sliding part 42 abuts the torsion spring 60. The trigger member 43 is connected to the body 20 by the torsion spring 60. The trigger member 43 restricts the movable handle 30 by the torsion of the torsion spring 60. After the trigger member 43 is automatically returned, the movable handle 30 is restricted again. As a result, the bone rongeur can achieve one-key return, and the state can be switched by one key without the need for assembly and disassembly for cleaning, without the risk of losing parts.

[0037] Specifically, when the laminectomy rongeur is in the actuated state, the first sliding part 41 abuts against the upper edge of the first feature 311 of the movable handle 30. When the user continues to press the handle, the first sliding part 41 slides on the first feature 311 of the movable handle 30 and finally abuts against the upper end of the first feature 311 of the movable handle 30. Since the first boss 11 disposed on the slider 10 is in the first sliding groove 22 of the main body 20, when the handle is operated, the slider 10 is driven to slide back and forth on the upper end of the main body 20. When it is necessary to switch the laminectomy rongeur from the actuated state to the disassembled state, the user releases the movable handle 30 and presses the trigger member 43, so that the first sliding part 41 disengages from the first feature 311 and slides to the second feature 312. Meanwhile, the second sliding portion 42 abuts against one end of the torsion spring 60 to compress the torsion spring 60. When the first boss 11 at the rear of the slider 10 and the first sliding groove 22 at the rear of the main body 20 are disengaged, the movable handle 30 drives the slider 10 to move the slider 10 backward while rotating clockwise, since the movable handle 30 is connected to the slider 10. When the slider 10 continues to move backward to the limit position, the slider rotates clockwise around the connection to the movable handle 30 until it forms a certain angle with the main body 20. By rotating the trigger and then rotating the slider 10 to open it at a certain angle, the bone rongeur can be switched from the normal operating state to the disassembled and cleaned state. The angle between the slider 10 and the main body 20 returns to its original state. The movable handle 30 rotates to repel the torsion spring 60. The action of returning the trigger can switch the bone rongeur from the disassembled and cleaned state to the normal operating state.

[0038] In this embodiment, a limiting pin 80 is further disposed in the concave region of the cheek of the main body 20. The limiting pin 80 is tightened and connected inside the limiting hole of the main body 20. The limiting pin 80 is disposed below the first sliding part 41. The axis of the limiting pin 80 is parallel to the axis of the trigger screw 70. One end of the torsion spring 60 abuts against the limiting pin 80, and the torsion spring 60 is in a stressed state. The other end of the torsion spring abuts against the second sliding part 42. When the laminectomy rongeur is in an actuated state, the limiting pin 80 abuts against the lower part of the first sliding part 41, causing the first sliding part 41 to abut against the first feature part 311.

[0039] Further, in this embodiment, the body 20 is provided with a central screw 90. The movable handle 30 is hinged to the body 20 by the central screw 90. The movable handle 30 may rotate around the central screw 90. The end of the movable handle 30 connected to the slider 10 is provided with a kidney-shaped hole 32. The slider 10 is connected to the movable handle 30 by a slider screw 50 in cooperation with the kidney-shaped hole 32. The slider screw 50 may slide within the kidney-shaped hole 32. When the laminectomy rongeur is in an actuated state, the slider screw 50 is located in the center of the kidney-shaped hole 32. When the laminectomy rongeur is in a disassembled state, the slider screw 50 is located in the top of the kidney-shaped hole 32.

[0040] In this embodiment, a V-shaped leaf spring 100 is provided between the movable handle 30 and the main body 20. One end of the leaf spring 100 is connected to the movable handle 30, and the other end of the leaf spring is connected to the main body 20. Clamping parts are provided opposite the movable handle 30 and the main body 20. A fastening part is provided at each of the ends on both sides of the leaf spring 100. The fastening parts are detachably and fixedly connected to the clamping parts as a whole. Specifically, each clamping part has two clamping pieces arranged parallel to each other. A clamping groove is formed between the two clamping pieces. Through holes are provided correspondingly in the two clamping pieces. The outer edge of the through hole and the clamping pieces are provided with a notch. The clamping part is clamped into the through hole from the notch. Each fastening part has a symmetrical extension formed by the end of the leaf spring 100 extending toward the outside of the leaf spring 100. The two extensions form a T-shaped structure with the ends of the leaf spring 100. The extensions are clamped into the through holes. The leaf spring 100 has a screw-free fastening connection structure between the movable handle 30 and the body 20. The leaf spring 100 is an integrally formed member, and unlike the two-half leaf spring 100 of the conventional rongeur, it is not hinged or connected as the conventional two-half leaf spring 100, which is more convenient to clean. The location where the leaf spring 100 is connected to the movable handle 30 and the body 20 is easy to clean, disinfect and sterilize. This avoids bone residue and tissue residue, which is less likely to cause cross-infection.

[0041] Also, in this embodiment, the front and rear parts of the upper part of the main body 20 are provided with first sliding grooves 22, respectively. The front and rear parts of the slider 10 are provided with corresponding first bosses, respectively. The end surface of the slider 10 facing the main body 20 between the two first bosses 11 is provided with second sliding grooves 12. The main body 20 between the two first sliding grooves 22 is provided with corresponding second bosses 23. The second bosses 23 are embedded in the second sliding grooves 12. The cooperation between the first bosses 11 and the first sliding grooves 22 and between the second bosses 23 and the second sliding grooves 12 allows the slider 10 to be better restricted, so that the rongeur is less likely to move out of position when switching from the cleaning state to the normal state. And the switching of states is facilitated. Furthermore, the end of the slider 10 near the trigger lock catch structure is configured with a smooth curved surface with a minimum curvature at the highest point of the curved surface. This effectively reduces the height of the top end of the slider 10, preventing excessive height from affecting the field of vision during use.

[0042] When the removable laminectomy rongeur of the present invention is actually used:

[0043] When the first boss 11 of the slider 10 slides into the first sliding groove 22 without restricting the trigger lock catch structure to the movable handle 30, the slide block 10 may slide back and forth on the upper end of the body 20 without disengagement. In this case, the rongeur is in a normal operating state.

[0044] After the trigger member 43 rotates 50° clockwise around the trigger screw 70, when the movable handle 30 rotates counterclockwise to a predetermined position, the limit of the trigger member 43 relative to the movable handle 30 moves backward. Under the elastic action of the leaf spring 100, when the movable handle 30 is released, the movable handle 30 may rotate clockwise around the central screw 90 to the limit of the trigger member 43. The slider screw 50 slides to the upper end of the kidney-shaped hole 32 of the movable handle 30. The slider 10 slides to the maximum limit at the upper end of the main body 20. After the first bosses 11 at the front and rear ends of the slider 10 are disengaged from the corresponding first sliding grooves, the slider 10 may rotate around the slider screw 50, so that the slider 10 forms an angle with the upper end of the main body 20, and the bone rongeur is in a cleaning state in this case.

[0045] After cleaning is completed, only the slider 10 needs to be reattached to the upper end of the body 20 by rotating it about the slider screw 50. The movable handle 30 is rotated counterclockwise into position. Under the torsional action of the torsion spring 60, the trigger member 43 is automatically returned to the normal operating state. When the movable handle returns to the normal operating state, a limiting effect on the movable handle 30 is achieved. In this case, the rongeur is returned from the cleaning state to the normal operating state again.

[0046] According to the structural design of the removable laminectomy rongeur of the present invention, the gap between the body 20 and the slider 10 can be thoroughly cleaned and disinfected to prevent bone and soft tissue residues from remaining, thereby reducing the occurrence of cross-infection and solving the problem of the laminectomy rongeur being difficult and time-consuming to clean and prone to losing parts. And the removable laminectomy rongeur is easy to assemble and disassemble and has high practicality.

[0047] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly explaining the present invention, and do not limit the implementation of the present invention. Those skilled in the art in the relevant field can further make other different forms of variations or modifications based on the above description. All embodiments are not necessarily and cannot be exhaustively listed in this specification. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention. [Explanation of symbols]

[0048] 10: Slider 11: First Boss 12: Second sliding groove 20: Main body 21: Edge 22: First sliding groove 23: Second Boss 30: Movable handle 31: Arc Boss 311: First feature 312: Second feature 32: Kidney-shaped hole 40: Trigger section 41: First sliding part 42: Second sliding part 43: Trigger parts 44: 3rd Boss 50: Slider screw 60: Torsion spring 70: Trigger screw 80: Restriction pin 90: Center screw 100: Leaf spring

Claims

1. A removable bone rongeur comprising a main body (20), a slider (10), and a movable handle (30), wherein a first sliding groove (22) is provided at the upper part of the main body (20), the slider (10) is located at the upper part of the main body (20), and a first boss (11) embedded in the first sliding groove (22) is provided on the end face of the slider (10) on the side facing the main body (20). A cutting edge (21) is provided at the front end of the main body (20). The movable handle (30) is hinge-connected to both the main body (20) and the slider (10), and the movable handle (30) is capable of driving the slider (10) to move the slider (10) along the first sliding groove (22). A trigger lock catch structure is provided at the cheek portion of the main body (20). The movable handle (30) can be pulled back and forth. A first feature portion (311) and a second feature portion (312) are provided on the upper part of the movable handle (30) in order from bottom to top. The trigger lock catch structure abuts against the first feature portion (311) or the second feature portion (312). When the trigger lock catch structure abuts against the first feature portion (311), the movable handle (30) can drive the slider (10) to move the slider (10) back and forth along the first sliding groove (22). In this case, the bone rongeur for vertebral arch resection is in an operating state. When the movable handle (30) is pulled forward, the trigger lock catch structure abuts against the second feature portion (312), and the slider (10) is disengaged from the first sliding groove (22). The slider (10) forms a certain angle with the main body (20) under the limiting action of the trigger lock catch structure. In this case, the bone rongeur for vertebral arch resection is in a disassembled state. A removable bone rongeur is characterized by this.

2. The rear end surface at the upper part of the movable handle (30) protrudes to form an arc boss (31). The lower surface of the arc boss (31) is arc-transitionally connected to the rear end surface of the movable handle (30) to form the first feature portion (311). The upper surface of the arc boss (31) is arc-transitionally connected to the rear end surface of the movable handle (30) to form the second feature portion (312). The first sliding portion (41) can move on or abut against the first feature portion (311) or the second feature portion (312). The detachable bone forceps according to claim 1 are characterized in that.

3. The trigger lock catch structure is provided with a first sliding portion (41), a second sliding portion (42), and a trigger portion (40) arranged in order from left to right. When the bone forceps for vertebral arch resection are in an operating state, the first sliding portion (41) abuts against the first feature portion (311) of the movable handle (30). When the bone forceps for vertebral arch resection are in a disassembled state, the first sliding portion (41) abuts against the second feature portion (312) of the movable handle (30). The trigger portion (40) is connected to the rear end of the movable handle (30) such that the slider (10) forms a certain angle with respect to the main body (20). The detachable bone forceps according to claim 1 or claim 2 are characterized in that.

4. The trigger lock catch structure includes a trigger member (43), a trigger screw (70), and a torsion spring (60) fitted into the trigger screw (70). A concave region for arranging the torsion spring (60) is provided on the cheek portion of the main body (20). The trigger screw (70) penetrates from one side of the cheek portion of the main body (20) to the opposite side of the cheek portion of the main body (20). The detachable bone forceps according to claim 1 or 2 are characterized in that.

5. The trigger member (43) includes the trigger part (40). The trigger part (40) is a key-shaped member. The upper surface of the trigger part (40) is a flat surface. The end of the trigger part (40) near the movable handle (30) extends toward the movable handle (30) to form a third boss (44). The end face of the third boss (44) in contact with the movable handle (30) forms the first sliding part (41). An arc surface provided below the third boss (44) and facing the inside of the third boss (44) forms the second sliding part (42). The first sliding part (41) abuts against and contacts the first feature part (311) or the second feature part (312). The second sliding part (42) abuts against the torsion spring (60). The removable bone forceps according to claim 4, characterized in that.

6. A limiting pin (80) is further provided in the concave region of the cheek part of the main body (20). The limiting pin (80) is disposed below the first sliding part (41). The limiting pin (80) has an axis parallel to the axis of the trigger screw (70). One end of the torsion spring (60) abuts against the limiting pin (80). The other end of the torsion spring (60) abuts against the second sliding part (42). When the bone forceps for laminectomy is in an operating state, the limiting pin (80) abuts against the lower part of the first sliding part (41) so that the first sliding part (41) abuts against the first feature part (311). The removable bone forceps according to claim 4, characterized in that.

7. A central screw (90) is provided on the main body (20). The movable handle (30) is hinged to the main body (20) by the central screw (90). The movable handle (30) is rotatable about the central screw (90). The removable bone forceps according to claim 1 or 2, characterized in that.

8. An end of the movable handle (30) connected to the slider (10) is provided with a kidney-shaped hole (32), and the slider (10) is connected to the movable handle (30) by a slider screw (50) that cooperates with the kidney-shaped hole (32). When the bone forceps for vertebrectomy is in an operating state, the slider screw (50) is located at the center of the kidney-shaped hole (32). When the bone forceps for vertebrectomy is in a disassembled state, the slider screw (50) is located above the kidney-shaped hole (32). The removable bone forceps according to claim 1 or 2, characterized in that.

9. A leaf spring (100) is provided between the movable handle (30) and the main body (20). One end of the leaf spring (100) is connected to the movable handle (30), and the other end of the leaf spring (100) is connected to the main body (20). The leaf spring (100) has an integrally formed structure. The removable bone forceps according to claim 1 or 2, characterized in that.

10. The leaf spring (100) is V-shaped. The removable bone forceps according to claim 9, characterized in that.

11. Clamping portions are provided opposite to the movable handle (30) and the main body (20). Fastening portions are provided at respective ends on both sides of the leaf spring (100). The fastening portion is detachably and fixedly connected to the clamping portion as a whole. The removable bone forceps according to claim 9, characterized in that.

12. The clamping portion includes two clamping pieces parallel to each other. A clamping groove is formed between the two clamping pieces. Through holes are correspondingly provided in the two clamping pieces. Notches are provided at the outer edge of the through hole and the clamping piece. The clamping portion is clamped into the through hole from the notch. The removable bone forceps according to claim 11, characterized in that.

13. Each fastening portion includes a symmetrically extending portion formed by an end of the leaf spring (100) extending outwardly from the leaf spring (100). The two extending portions form a T-shaped structure with the end of the leaf spring (100). The extending portion is clamped into the through hole. The removable bone forceps according to claim 11, characterized in that.

14. On each of the front and rear portions of the upper part of the main body (20), the first sliding groove (22) is provided. On each of the front and rear portions of the slider (10), the first boss (11) is correspondingly provided. Between the two first bosses (11), on the end face of the slider (10) facing the main body (20), a second sliding groove (12) is provided. On the main body (20) between the two first sliding grooves (22), a second boss (23) embedded in the second sliding groove (12) is correspondingly provided. The detachable bone forceps according to claim 1 or 2, characterized in that this is the case.

15. On each of the main body (20) and the holding portion of the movable handle (30), an anti-slip line is provided. The detachable bone forceps according to claim 1 or 2, characterized in that this is the case.

16. The end portion of the slider (10) near the trigger lock catch structure is configured to be a smooth curved surface, and the curvature of the curved surface has a minimum value at the highest point of the curved surface. The detachable bone forceps according to claim 1 or 2, characterized in that this is the case.

17. The detachable bone forceps is in the form of a bone forceps for vertebrectomy. The detachable bone forceps according to claim 1 or 2, characterized in that this is the case.

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