CN112043343A

CN112043343A - Medical drill bit of orthopedics

Info

Publication number: CN112043343A
Application number: CN202010990966.XA
Authority: CN
Inventors: 闫超; 徐海林; 王政波; 王雷舰; 章辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-19
Filing date: 2020-09-19
Publication date: 2020-12-08

Abstract

The invention relates to an orthopedic medical drill bit which comprises a milling and drilling body, wherein the milling and drilling body is of a cylindrical structure, three groups of cutting edges are arranged at one end of the milling and drilling body, cutting edge grooves are formed among the cutting edges, the cutting edge grooves are oblique cutting edge grooves, inclined grooves are formed in the cutting edges, and a groove is formed in the other end of the milling and drilling body; the oblique blade groove can reduce the fracture of the cutting edge when the bone is cast and cut, can ensure that the area of the outer opening is larger than that of the inner opening when the bone is cut, and has obvious advantages in AKin and correction of the angle fixed on the distal joint surface of the metatarsus; the tail of the milling and drilling body is provided with a groove, so that a drill bit can be conveniently inserted into an electric drill in the using process, and the electric drill is tightly clamped and is not easy to loosen.

Description

Medical drill bit of orthopedics

Technical Field

The invention relates to the technical field of medical instruments for orthopedic surgery, in particular to a medical drill for orthopedic surgery.

Background

Minimally invasive treatment of hallux valgus, bone grinding, punching and osteotomy are the most common surgical operation methods, and often require the cooperation of a drill bit and a saw blade, and the cooperation of a swing saw is also required, so that the operation is time-consuming and labor-consuming. Therefore, there is a need for a drill that can grind, drill, and cut bone in one piece to improve the efficiency of the surgery.

The cutter groove of the prior drill bit is easy to break when the bone is thrown in the AKin operation and the operation for correcting the inherent angle of the distal joint surface of the metatarsus.

Disclosure of Invention

The invention aims to provide an orthopedic medical drill to solve the problem of inconvenient use in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a medical drill bit of orthopedics, bores the body including milling, it bores the body and is cylindrical structure, its characterized in that to mill: the milling and drilling tool is characterized in that three groups of cutting edges are arranged at one end of the milling and drilling tool body, cutting edge grooves are formed among the cutting edges and are oblique, inclined grooves are formed in the cutting edges, and a groove is formed in the other end of the milling and drilling tool body.

Preferably, the area of the top surface of each cutting edge in the inclined direction is larger than the area of the ground, an inclined cutting edge groove is formed between each cutting edge and the corresponding adjacent cutting edge, the cutting edges can be reduced from being broken when bones are thrown and cut, and the area of an outer opening is larger than that of an inner opening when the bones are cut.

The inclined groove on the cutting edge can increase the contact area of the cutting edge and a thrown and cut tissue in the operation process, so that the throwing and cutting are facilitated, the tail part of the milling and drilling body is provided with the groove, a drill bit can be conveniently inserted into an electric drill in the using process, and the electric drill is tightly clamped and is not easy to loosen.

Preferably, the tail of the groove is provided with a conical bulge, so that the drill bit can be inserted into the electric drill more easily.

Preferably, the three groups of cutting edges are arranged at the same interval and are obliquely arranged, so that the cutting is convenient.

Preferably, the width of the outer end surface of the cutting edge and the width of the cutting edge are gradually reduced, so that the cutting edge can conveniently penetrate into tissues.

Preferably, the outer end faces of the three groups of cutting edges are of inclined plane structures, so that cutting is facilitated.

Preferably, the inclined grooves on the cutting edges are formed by rotary cutting on three groups of cutting edges in a right-handed mode, the bottoms of the inclined grooves are narrow, and the end portions of the inclined grooves are wide.

Preferably, the right-hand angle of the chute is 30 degrees.

Compared with the prior art, the invention has the beneficial effects that: the edge groove formed by adjacent cutting edges is an oblique edge groove, so that the cutting edge breakage can be reduced when bone is thrown and cut, the area of an outer opening is larger than that of an inner opening when the bone is cut, and the advantages in AKin and correction of the angle formed by the distal joint surface of the metatarsus are obvious; the inclined groove on the cutting edge can increase the contact area between the cutting edge and the tissue to be polished in the operation process, so that the polishing is facilitated; the tail of the milling and drilling body is provided with a groove, so that a drill bit can be conveniently inserted into an electric drill in the using process, and the electric drill is tightly clamped and is not easy to loosen.

When the electric drill is used, the milling drill is inserted into the electric drill for fixing, the drill bit horizontally abuts against the surface of a bone during bone grinding, the drill bit vertically abuts against the surface of the bone during punching and bone cutting, slight force is applied to the surface of the bone, and the drilling speed is up to 20000-40000 rpm, so that the bone grinding, punching and bone cutting operations can be realized.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a sectional view of the cutting edge portion of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-2: the orthopedic medical drill bit comprises a milling and drilling body 1, wherein the milling and drilling body 1 is of a cylindrical structure, three groups of cutting edges 6 are arranged at one end of the milling and drilling body 1, and the three groups of cutting edges 6 are spaced at the same interval; the width 61 of the outer end face of the cutting edge 6 and the width of the cutting edge are gradually reduced, so that the cutting edge can conveniently penetrate into tissues; the outer end surface 61 of the cutting edge 6 is of an inclined plane structure, so that cutting is facilitated; the area of the top surface 63 of the cutting edge 6 along the inclined direction is larger than that of the bottom surface 62, and an inclined edge groove 4 is formed between the cutting edge 6 and the adjacent cutting edge; the inclined blade groove 4 can reduce the fracture of the cutting edge when the bone is cast and cut, and can ensure that the area of an outer opening is larger than that of an inner opening when the bone is cut; the cutting edges 6 are provided with chutes 5, the chutes 5 are formed by rotary cutting of the three groups of cutting edges 6 in a right-handed manner, and the right-handed rotation angle is 30 degrees; the chute 5 is narrow in bottom and wide in end part, and further the area of an outer opening is larger than that of an inner opening when a bone is cut; the other end of the milling and drilling body 1 is provided with a groove 2, the tail part of the groove 2 is provided with a conical bulge 3, the drill bit can be conveniently inserted into an electric drill in the using process, and the electric drill is clamped tightly and is not easy to loosen.

The cutting edge 6 is obliquely arranged, the inclined groove 5 on the cutting edge 6 can increase the contact area of the cutting edge 6 and a thrown tissue in the operation process, so that the throwing and the cutting are convenient, the tail part of the milling and drilling body 1 is provided with the groove 2, the cutting edge groove is an inclined cutting edge groove 4, the fracture of the cutting edge 6 can be reduced when bones are thrown and cut, the area of an outer opening is larger than that of an inner opening when the bones are cut, and the advantages in AKin and correction of the inherent angle of a distal joint surface of metatarsus are obvious; the inclined groove 5 on the cutting edge 6 can further increase the contact area of the cutting edge 6 and the tissue to be polished in the operation process, so that polishing is facilitated; the tail of the milling and drilling body 1 is provided with the groove 2, so that a drill bit can be conveniently inserted into an electric drill in the using process, and the electric drill is tightly clamped and is not easy to loosen.

Claims

1. The utility model provides a medical drill bit of orthopedics, bores the body including milling, it bores the body and is cylindrical structure, its characterized in that to mill: the milling and drilling tool is characterized in that three groups of cutting edges are arranged at one end of the milling and drilling tool body, cutting edge grooves are formed among the cutting edges and are oblique, inclined grooves are formed in the cutting edges, and a groove is formed in the other end of the milling and drilling tool body.

2. The orthopedic medical drill bit of claim 1, wherein: the area of the top surface of the cutting edge along the inclined direction is larger than that of the bottom surface, and an inclined edge groove is formed between the cutting edge and the adjacent cutting edge.

3. The orthopedic medical drill bit of claim 1, wherein: the tail of the groove is provided with a conical bulge, so that a drill bit can be inserted into an electric drill more easily.

4. The orthopedic medical drill bit of claim 1, wherein: the three groups of cutting edges are arranged in an inclined mode, and the intervals between the three groups of cutting edges are the same.

5. The orthopedic medical drill bit of claim 1, wherein: the width of the outer end surface of the cutting edge and the width of the cutting edge are gradually reduced, so that the cutting edge can conveniently go deep into tissues.

6. The orthopedic medical drill bit of claim 1, wherein: the outer end faces of the three groups of cutting edges are of inclined plane structures, so that cutting is facilitated.

7. The orthopedic medical drill bit of claim 1, wherein: the chute on the cutting edges is formed by rotary cutting the three groups of cutting edges in a right-handed mode, the bottom of the chute is narrow, and the end portion of the chute is wide.

8. The orthopedic medical drill bit of claim 1, wherein: the right-handed rotation angle of the chute is 30 degrees.