Abrasive drill and grinding rongeur

Abstract

The utility model relates to the technical field of medical instruments, in particular to an abrasive drill and a grinding rongeur, the abrasive drill is installed on the rongeur for use, the abrasive drill comprises a drill bit and a drill handle, the drill bit is fixedly connected with the drill handle, the drill bit comprises a conical part and a cylindrical part which are integrally formed, two cutting edges are formed on the conical part, and the cylindrical part is fixedly connected with the conical part. The two cutting edges are located on the two opposite sides of the conical part respectively, the same ends of the two cutting edges are staggered at the center point of the top end of the conical part, and the outer circumference of the cylindrical part is a toothless smooth face. According to the abrasive drill, cutting force is concentrated at the top end of the conical part, the penetrating capacity of the abrasive drill can be effectively improved, and the grinding effect and efficiency are improved. Comprising the abrasive drill can bite the bone substance to be treated through the cooperation of the sheath protecting shell and the abrasive drill, then the rotating abrasive drill is used for drilling, grinding and cutting off the bone substance, and the thick and hard bone substance can be treated.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially, it relates to a kind of drill and grinding rongeur. BACKGROUND

[0002] Current rongeur, especially vertebral plate rongeur, is a kind of surgical instrument commonly used in spine surgery, can be used to drill and grind tightly bite plate bone. The existing rongeur is mainly composed of a jaw portion and a handle portion, the jaw portion is controlled by the handle to clamp the bone, drill and grind, and cut out. In some operations, the bone to be removed or the dead bone to be cut is thick and hard, and the existing rongeur is generally only suitable for removing weak bone, and cannot clamp and remove thick and hard bone. SUMMARY

[0003] Therefore, the utility model aims to provide a kind of drill and grinding rongeur to at least solve the problem that the existing rongeur cannot clamp and quickly remove thick and hard bone.

[0004] The utility model solves the above technical problem by the following technical means:

[0005] The first aspect of the utility model provides a kind of drill, the drill is installed on rongeur and used, the drill includes drill head and drill handle, the drill head is fixedly connected with drill handle, the drill head includes integrally-formed conical portion and cylindrical portion, two cutting edges are formed on the conical portion, two cutting edges are located at opposite sides of conical portion respectively, and the same end of two cutting edges is staggered with each other at the top center point of conical portion, and the outer circumference of cylindrical portion is smooth surface without teeth.

[0006] Further, two cutting edges are in central symmetrical distribution relationship with the top center point of conical portion.

[0007] Further, the cutting edge has chip removal groove on the side.

[0008] The same end of two cutting edges in the drill of the utility model is staggered with each other at the top center point of conical portion, and the outer circumference of cylindrical portion is smooth surface without teeth. Such structure concentrates the cutting force of drill on the top of conical portion, so that the top of conical portion has strong cutting ability, which can effectively improve the penetration ability of drill, and improve the grinding effect and efficiency.

[0009] The second aspect of the utility model provides a kind of grinding rongeur, including the drill of the first aspect described above.

[0010] Furthermore, the grinding bone biting forceps also includes an outer tube, a protective sheath, a handle, and a pressure handle. The outer tube is slidably fitted onto the drill shank, with one end of the outer tube fixedly connected to the protective sheath and the other end fixedly connected to the pressure handle. The protective sheath is slidably fitted onto the drill bit, and the protective sheath includes an integrally formed end cap, a clamping section, and a connecting section. The drill bit is located within the clamping section, and the gap between the drill bit and the end cap is used to accommodate bone tissue.

[0011] Furthermore, the end cap has a hook on the side facing the drill bit.

[0012] Furthermore, the shape of the side of the end cap facing the drill bit is adapted to the shape of the top of the conical part, and the side of the end cap facing away from the drill bit is an inclined surface, which is inclined towards the drill bit.

[0013] Furthermore, a spring is installed between the pressure handle and the handle; a guide post is fixed to one end of the pressure handle near the handle, the spring is sleeved on the guide post, and the guide post slides through the handle.

[0014] Furthermore, a support tube is fitted onto the drill shank.

[0015] Furthermore, an arc-shaped gasket is fitted on one end of the support tube near the drill bit, and the outer wall of one end of the arc-shaped gasket contacts the inner wall of the sheath shell.

[0016] This invention relates to a grinding bone-biting forceps. The forceps grips the bone to be processed through a sheath and a grinding drill, then uses the rotating drill to drill and grind away the bone. This allows for the processing of thicker and harder bone, and the drill tip has strong cutting and penetrating capabilities, effectively improving the grinding effect and efficiency of the forceps. This invention is convenient, flexible, and quick to use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a grinding drill according to this utility model;

[0018] Figure 2 It is a top view of a drill;

[0019] Figure 3 This is a schematic diagram of the structure of the grinding bone biting forceps of this utility model;

[0020] Figure 4 This is a sectional view of the distal end of a grinding bone-biting forceps;

[0021] Among them, the grinding drill 100, drill shank 110, drill bit 120, tapered part 121, cutting edge 1211, chip removal groove 1212, cylindrical part 122, outer tube 200, sheath shell 300, end cap 310, inclined surface 311, bite hook 312, clamping section 320, connecting section 330, handle 400, pressure handle 500, spring 610, guide post 620, support tube 710, and arc-shaped washer 720. Detailed Implementation

[0022] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can understand the advantages and effects of this utility model from the content disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are for illustrative purposes only and represent schematic diagrams, not actual pictures. They should not be construed as limiting the utility model. To better illustrate the embodiments of this utility model, some components in the figures may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable that some well-known structures and their descriptions may be omitted in the figures for those skilled in the art.

[0023] In the figures of this utility model embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figure, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe the positional relationship in the figure are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above-mentioned terms can be understood according to the specific circumstances.

[0024] Please refer to Figure 1 and Figure 2 This application discloses a grinding drill 100, which is mounted on bone-biting forceps and used for grinding bone tissue. The grinding drill 100 includes a drill bit 120 and a drill shank 110. The drill bit 120 is fixedly connected to the drill shank 110. The drill bit 120 includes an integrally formed conical part 121 and a cylindrical part 122. Two cutting edges 1211 are formed on the conical part 121. The two cutting edges 1211 are located on opposite sides of the conical part, and the same end of the two cutting edges 1211 is offset from each other at the center point of the top of the conical part 121. The outer circumference of the cylindrical part 122 is a toothless smooth surface.

[0025] In some embodiments, the two cutting edges 1211 are centrally symmetrically distributed with respect to the center point of the tip of the tapered portion 121.

[0026] In some embodiments, in order to facilitate chip removal and avoid chip accumulation that affects cutting efficiency and effect, the cutting edge 121 has a chip removal groove 1212 on its side.

[0027] In the aforementioned grinding drill 100, the two cutting edges 1211 are offset at the center point of the top of the conical portion 121, and the outer circumference of the cylindrical portion 122 has a smooth, toothless surface. This structure concentrates the cutting force of the grinding drill 100 at the top of the conical portion 121, effectively improving the penetration ability of the grinding drill 100 and enhancing the grinding effect and efficiency. During high-speed unidirectional rotary grinding, the chip removal groove 1212 effectively prevents chip accumulation, further improving the grinding effect and efficiency.

[0028] Please refer to Figure 3 and Figure 4 This application discloses a grinding and biting forceps, comprising the aforementioned grinding drill 100, an outer tube 200, a sheath shell 300, a handle 400, and a pressure handle 500. The outer tube 200 is slidably sleeved on the drill shank 110, with one end of the outer tube 200 fixedly connected to the sheath shell 300 and the other end fixedly connected to the pressure handle 500. The sheath shell 300 is slidably sleeved on the drill bit 120, and includes an integrally formed end cap 310, a clamping section 320, and a connecting section 330. The drill bit 120 is located within the clamping section 320, and the gap between the drill bit 120 and the end cap 310 is used to accommodate bone tissue.

[0029] In this embodiment, the clamping section 320 has an arc-shaped groove structure and serves as a sheath structure for the grinding drill 100. The handle 400 is provided for the user to grip. Moving the pressure handle 500 along the axial direction of the drill shank 110 causes the outer tube 200 and the sheath shell 300 to move, thereby adjusting the distance between the drill bit 120 and the end cap 310 to accommodate different thicknesses of bone, facilitating clamping and grinding processes.

[0030] The end cap 310 has a hook 312 on the side facing the drill bit 120. The hook 312 is used to hook the lower edge of the bone to be treated for grinding and removal. The shape of the side of the end cap 310 facing the drill bit 120 is adapted to the shape of the top of the conical part. The side of the end cap 310 facing away from the drill bit 120 is an inclined surface 311, which is inclined towards the drill bit 120. The inclined surface 311 is beneficial to the use of this grinding bone forceps, for example, when bone hyperplasia occurs in the articular processes and lateral recesses, to maximize the preservation of articular process stability while reducing nerve damage.

[0031] A spring 610 is installed between the handle 500 and the grip 400. A guide post 620 is fixed to one end of the handle 500 near the grip 400. The spring 610 is sleeved on the guide post 620, which slides through the grip 400. Specifically, the grip 400 has a through hole, and the guide post 620 slides through the through hole. When the grinding bone clamps bone, the bone is located between the end cap 310 and the drill bit 120. The spring 610 is compressed, and the spring's deformation-restoring force achieves clamping of the bone for operation.

[0032] A support tube 710 is fitted onto the drill shank 110, and the support tube 710 passes through the outer tube 200, allowing the outer tube 200 to slide on the support tube 710. The end of the support tube 710 furthest from the drill bit 120 is fixed to the handle 400, allowing the drill shank 110 to rotate relative to the support tube 710, thus rotating the drill bit 120. An arc-shaped washer 720 is fitted onto the end of the support tube 710 closest to the drill bit 120, with one end of the outer wall of the arc-shaped washer 720 contacting the inner wall of the sheath shell 300.

[0033] When using the aforementioned grinding and biting forceps, the pressure handle 500 is moved, which moves the outer tube 200, and in turn moves the protective sheath 300 to adjust the distance between the end cap 310 and the drill bit 120 so as to clamp the bone to be processed. The drill shank 110 is connected to the motor. The rotation of the motor drives the drill shank 110 to rotate, which in turn drives the drill bit 120 to rotate to grind and remove the bone to be processed, especially to grind and thin larger or thicker bone to facilitate subsequent clamping.

[0034] The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model. Technologies, shapes, and structural parts not described in detail in this utility model are all known technologies.

Claims

1. A grinding drill, characterized in that, The grinding drill is mounted on a bone-biting pliers. The grinding drill includes a drill bit and a drill shank. The drill bit is fixedly connected to the drill shank. The drill bit includes an integrally formed conical part and a cylindrical part. Two cutting edges are formed on the conical part. The two cutting edges are located on opposite sides of the conical part. The same end of the two cutting edges is offset from each other at the center point of the top of the conical part. The outer circumference of the cylindrical part is a toothless smooth surface.

2. A grinding drill according to claim 1, characterized in that, The two cutting edges are centrally symmetrical about the center point of the top of the tapered part.

3. A grinding drill according to claim 1, characterized in that, The cutting edge has a chip removal groove on its side.

4. Grinding bone-biting pliers, characterized in that, The grinding drill as described in any one of claims 1-3 above.

5. The grinding bone biting pliers according to claim 4, characterized in that, The grinding and biting forceps also includes an outer tube, a protective sheath, a handle, and a pressure handle. The outer tube is slidably fitted onto the drill shank, with one end of the outer tube fixedly connected to the protective sheath and the other end fixedly connected to the pressure handle. The protective sheath is slidably fitted onto the drill bit, and the protective sheath includes an integrally formed end cap, a clamping section, and a connecting section. The drill bit is located within the clamping section, and the gap between the drill bit and the end cap is used to accommodate bone tissue.

6. The grinding bone biting pliers according to claim 5, characterized in that, The end cap has a hook on the side facing the drill bit.

7. The grinding bone biting pliers according to claim 6, characterized in that, The shape of the end cap facing the drill bit is adapted to the shape of the top of the conical part, and the side of the end cap facing away from the drill bit is an inclined surface, which is inclined towards the drill bit.

8. The grinding bone biting pliers according to claim 5, characterized in that, A spring is installed between the pressure handle and the handle; a guide post is fixed to one end of the pressure handle near the handle, the spring is sleeved on the guide post, and the guide post slides through the handle.

9. The grinding bone biting pliers according to claim 5, characterized in that, A support tube is fitted onto the drill shank.

10. The grinding bone biting pliers according to claim 9, characterized in that, An arc-shaped gasket is fitted on one end of the support tube near the drill bit, and the outer wall of one end of the arc-shaped gasket contacts the inner wall of the sheath shell.

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