CN215384374U - Medical grinding head and medical grinding cutter - Google Patents
Medical grinding head and medical grinding cutter Download PDFInfo
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- CN215384374U CN215384374U CN202120623263.3U CN202120623263U CN215384374U CN 215384374 U CN215384374 U CN 215384374U CN 202120623263 U CN202120623263 U CN 202120623263U CN 215384374 U CN215384374 U CN 215384374U
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- cutting edge
- cutter tube
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Abstract
The utility model discloses a medical grinding head and a medical grinding cutter, wherein the medical grinding head comprises a cylindrical grinding part and a hemispherical or rugby-shaped head arranged at the front end of the grinding part, and one or more cutting edges are arranged on the periphery of the grinding part; the surface of the head part is partially or completely smooth. According to the medical grinding head provided by the utility model, as the surface of the head part is a smooth surface, the front end of the grinding head can be close to or even abut against a part which does not need to be ground, and only the side cutting edge is used for grinding a focus, so that the nerve of a cutting edge is prevented from being damaged, and the operation safety is improved.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a medical grinding head and a medical grinding cutter.
Background
In some bone surgeries, it is sometimes necessary to grind bone tissue in a patient using a grinding tool, and the existing grinding tool generally includes an outer tool tube and an inner tool tube rotatably disposed in the outer tool tube, a grinding head is disposed at a front end of the inner tool tube, the grinding head includes a cylindrical grinding portion and a hemispherical or rugby-spherical head portion disposed at a front end of the grinding portion, and cutting edges are disposed on the grinding portion and the head portion. When the head is ground near the nerve part, the knife edge is very easy to damage the nerve, and the operation risk is high.
Disclosure of Invention
In view of the current state of the prior art, the utility model aims to provide a medical grinding head and a medical grinding tool which can avoid damage to nerves during grinding.
In order to solve the technical problem, the medical grinding head provided by the utility model comprises a cylindrical grinding part, wherein one or more cutting edges are arranged on the periphery of the grinding part; the front end of the grinding part is provided with a hemispherical or rugby-shaped head part, and the surface part or the whole of the head part is a smooth surface.
According to the medical grinding head provided by the utility model, as the surface of the head part is a smooth surface, the front end of the grinding head can be close to or even abut against a part which does not need to be ground, and only the side cutting edge is used for grinding a focus, so that the nerve of a cutting edge is prevented from being damaged, and the operation safety is improved.
In one embodiment, the cutting edge has a rake face, a flank face and an edge formed by the intersection of the rake face and the flank face.
In one embodiment, the flank surface transitions smoothly with the surface of the head.
In one embodiment, a plurality of the blades are uniformly distributed along the circumferential direction.
In one embodiment, the blade is helical.
In one embodiment, the cutting edge is left or right handed helical.
In one embodiment, the cutting edges are linear extending in the axial direction of the grater.
In one embodiment, the medical abrasive head further comprises a handle portion having a front end connected to a rear end of the grinding portion.
In one embodiment, the shank has an axis of rotation, and the geometric central axis of the grinding portion is disposed eccentrically to the axis of rotation of the shank.
The medical grinding cutter comprises an outer cutter tube, an inner cutter tube and a medical grinding head, wherein the inner cutter tube is arranged in the outer cutter tube and can rotate around a rotation axis, and the rear end of the medical grinding head is connected with the front end of the inner cutter tube.
The advantageous effects of the additional features of the present invention will be explained in the detailed description section of the present specification.
Drawings
Fig. 1 is a schematic perspective view of a medical grinding head in an embodiment of the utility model;
figure 2 is a left side view of the medical abrasive tip shown in figure 1;
fig. 3 is a partially enlarged schematic view at I in fig. 1.
Description of reference numerals: 10. a grinding section; 11. a blade; 111. a rake face; 112. a flank face; 113. cutting edges; 20. a head portion; 21. a surface of the head; 30. a handle portion.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the features in the following embodiments and examples may be combined with each other without conflict.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
As shown in fig. 1 to 3, the medical abrasive head in the embodiment of the present invention comprises an abrading portion 10, a head portion 20 and a shank portion 30, wherein the abrading portion 10 has a cylindrical shape, and the outer periphery of the abrading portion 10 is formed with one or more blades 11, the blades 11 being used for cutting human tissue when the abrasive head is rotated about a rotational axis. In the present embodiment, the cutting edge 11 has a rake surface 111, a flank surface 112, and an edge 113 formed by the intersection of the rake surface 111 and the flank surface 112. In order to improve the cutting efficiency, the number of the blades 11 in the present embodiment is multiple, and the multiple blades 11 are uniformly distributed along the circumferential direction. Preferably, the blade 11 is spiral, so that the blade 11 has good stability when contacting human tissue, small vibration and small trauma to human body. The blade 11 in this embodiment may be a right-handed screw or a left-handed screw depending on the direction of rotation of the power source. Alternatively, the blade 11 may also be rectilinear extending in the axial direction of the grater.
In order to expand the working range of the grinding head, the geometric central axis of the grinding portion 10 is disposed eccentrically to the rotational axis of the shank portion 30.
The head 20 is provided at the front end of the grinding part 10, the head 20 has a hemispherical shape (or a football shape), and a part or the whole of the surface 21 of the head 20 has a smooth surface. Because the surface 21 of the head part 20 is a smooth surface, the front end of the grinding head can be close to or even abut against a part which does not need to be ground, and only the side blade 11 is used for grinding the focus, so that the blade 11 is prevented from damaging nerves, and the operation safety is improved. Preferably, for further added safety, the relief surface 112 transitions smoothly with the surface 21 of the head 20, avoiding damage to the abutment by sharp edges on the head edge.
In another embodiment of the present invention, there is provided a medical grinding tool having the medical burr of the above embodiment, the medical grinding tool including an outer cutter tube (not shown in the drawings), an inner cutter tube (not shown in the drawings) disposed inside the outer cutter tube and rotatable about a rotation axis, and the medical burr of the above embodiment, the medical burr being connected to a front end of the inner cutter tube.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (10)
1. A medical grinding head comprises a cylindrical grinding part, wherein one or more cutting edges are arranged on the periphery of the grinding part; the grinding machine is characterized in that a hemispherical or rugby-shaped head is arranged at the front end of the grinding part, and part or all of the surface of the head is a smooth surface.
2. The medical abrasive tip of claim 1, wherein the blade has a rake face, a flank face and a cutting edge formed by the intersection of the rake face and the flank face.
3. The medical abrasive head according to claim 2, wherein the flank face smoothly transitions with the surface of the head.
4. The medical abrasive tip according to any one of claims 1 to 3, wherein a plurality of said cutting edges are uniformly distributed in a circumferential direction.
5. The medical abrasive tip of claim 4, wherein said cutting edge is helical.
6. The medical abrasive tip of claim 5, wherein said cutting edge is left or right handed helical.
7. The medical abrasive tip of claim 4, wherein the cutting edge is linear extending in the axial direction of the abrasive tip.
8. The medical abrasive head according to any one of claims 1 to 3, further comprising a shank portion having a front end connected to a rear end of the grinding portion.
9. The medical abrasive head of claim 8, wherein the handle has an axis of rotation, and the geometric central axis of the abrading portion is disposed off-center from the axis of rotation of the handle.
10. A medical grinding tool comprising an outer cutter tube and an inner cutter tube provided in the outer cutter tube so as to be rotatable about a rotation axis, characterized by further comprising a medical grater according to any one of claims 1 to 9, a rear end of which is connected to a front end of the inner cutter tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120623263.3U CN215384374U (en) | 2021-03-26 | 2021-03-26 | Medical grinding head and medical grinding cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120623263.3U CN215384374U (en) | 2021-03-26 | 2021-03-26 | Medical grinding head and medical grinding cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215384374U true CN215384374U (en) | 2022-01-04 |
Family
ID=79669485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120623263.3U Active CN215384374U (en) | 2021-03-26 | 2021-03-26 | Medical grinding head and medical grinding cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215384374U (en) |
-
2021
- 2021-03-26 CN CN202120623263.3U patent/CN215384374U/en active Active
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