CN-121987291-A - Cutting sharpening head for operation

Abstract

The invention relates to the technical field of medical instruments and discloses a surgical cutting edge grinding head which comprises a grinding head body, wherein a circular arc-shaped cutting edge is arranged on the grinding head body, the edge part of the cutting edge is higher than a reference surface of the grinding head body, the cutting edge is divided into a forward rotating section and a reverse rotating section which are opposite in rotation direction and mirror symmetry by taking an apex as a boundary, cutting surfaces on two sides of the cutting edge are respectively formed into a first rotating edge front angle and a second rotating edge front angle, and the absolute value of the first rotating edge front angle is smaller than that of the second rotating edge front angle. The invention ensures that the same cutting edge grinding head can realize the integration of efficient cutting and controllable heat accumulation, and synchronously finish the grinding of bone tissues and the temperature control hemostasis of bone surfaces during operation.

Inventors

• LIU CHANGFENG
• LI HONGYUAN
• ZHANG JIASHUN

Assignees

• 贵州梓锐科技有限公司

Dates

Publication Date

20260508

Application Date

20260401

Claims (10)

1. 1. The surgical cutting edge grinding head comprises a grinding head body and is characterized in that an arc-shaped cutting edge is arranged on the grinding head body, the edge part of the cutting edge is higher than a reference surface of the grinding head body, the cutting edge is divided into a forward rotating section and a reverse rotating section which are opposite in rotation direction and mirror symmetry by taking an apex as a boundary, cutting surfaces on two sides of the cutting edge are respectively formed into a first rotating edge front angle and a second rotating edge front angle, and the absolute value of the first rotating edge front angle is smaller than that of the second rotating edge front angle.
2. 2. The surgical cutting edge grinding head according to claim 1, wherein the grinding head body has a spherical shape, and the cutting edge extends radially along a maximum circumferential line of the spherical surface.
3. 3. The surgical cutting edge grinding head according to claim 2, wherein the forward rotation section and the reverse rotation section penetrate at a vertex of the grinding head body away from the driving rod and form a smooth transition.
4. 4. The surgical cutting edge grinding head according to claim 3, wherein the diameter of the grinding head body is D, and the height D of the edge part of the cutting edge higher than the spherical reference surface is 1% -8%.
5. 5. The surgical cutting edge grinding head according to claim 4, wherein the spherical diameter of the grinding head body is 2.0mm to 7.0mm, and the edge of the cutting edge is 0.06mm to 0.15mm higher than the spherical reference surface.
6. 6. The surgical cutting edge grinding head according to any one of claims 1 to 5, wherein the angle of the first rotary edge rake angle ranges from-30 ° to 15 °, and the angle of the second rotary edge rake angle ranges from-50 ° to-70 °.
7. 7. The surgical cutting edge grinding head according to any one of claims 1 to 5, wherein the grinding head body is provided with a driving rod for externally connecting a driving source to drive the grinding head body to rotate.
8. 8. The surgical cutting edge grinding head according to claim 6, wherein the connection between the grinding head body and the driving rod is a platform, and the driving rod and the grinding head body are integrally formed.
9. 9. The surgical cutting edge grinding head of claim 8 wherein said cutting edge is a continuous cutting edge.
10. 10. The surgical cutting edge grinding head of claim 8, wherein the cutting edge is an intermittent edge, a plurality of chip breaking grooves are formed in the intermittent edge, and the chip breaking grooves in the forward rotating section and the reverse rotating section are distributed in a staggered mode.

Description

Cutting sharpening head for operation Technical Field The invention relates to the technical field of medical instruments, in particular to a cutting edge grinding head for surgery. Background In bone surgery, graters are often used for fine grinding, shaping of bone surfaces and removal of bone fragments. The existing bone surgery grinding heads are mainly divided into two types, one type is a structure with a plurality of cutting edges uniformly distributed in the circumferential direction, and the other type is a traditional integral spherical structure. However, the prior art has the obvious defects that 1, when the grinding head with multiple blades circumferentially distributed rotates at a high speed, the multiple cutting edges alternately cut, so that the periodical fluctuation of cutting force is easy to cause the vibration of the grinding head, and the operation stability and the grinding precision are affected. Meanwhile, the multi-blade structure can severely disturb the flushing liquid in the operation area, affect the definition of the operation area, and possibly reduce the cooling efficiency, so that local overheating is caused, and the activity of bone tissues is damaged. 2. The traditional integral spherical grinding head or the common multi-blade grinding head has a design core focused on cutting efficiency only. In the operation scene of synchronous bone surface hemostasis (such as bone surface bleeding), the existing grinding head can not realize effective temperature control coagulation on the bone wound surface while efficiently removing bones. The doctor needs to frequently replace instruments or stop bleeding in other modes, so that the operation time is prolonged, and the operation complexity is increased. 3. The complex blade grooves or the bulge structures can seriously interfere the water flow field to form turbulent flow, so that the cooling and chip scouring effects of flushing fluid on cutting points are reduced, and the operation field can be influenced. Disclosure of Invention Therefore, the invention aims to provide the cutting edge grinding head for the operation, so that the same cutting edge grinding head can realize the integration of efficient cutting and controllable heat accumulation, and the grinding of bone tissues and the temperature control hemostasis of bone surfaces can be synchronously completed during the operation, thereby improving the operation efficiency. The invention solves the technical problems by the following technical means: The invention discloses a surgical cutting edge grinding head which comprises a grinding head body, wherein an arc-shaped cutting edge is arranged on the grinding head body, the edge part of the cutting edge is higher than a reference surface of the grinding head body, the cutting edge is divided into a forward rotating section and a reverse rotating section which are opposite in rotation direction and mirror symmetry by taking an apex as a boundary, two side cutting surfaces of the cutting edge are respectively formed into a first rotating edge front angle and a second rotating edge front angle, and the absolute value of the first rotating edge front angle is smaller than that of the second rotating edge front angle. In the technical scheme, the cutting edge is divided into two sections, and different rake angles are given to the cutting edge. The first rotary blade rake angle adopts a smaller rake angle, keeps sharp, focuses on efficiently cutting bone tissues during forward rotation, and the second rotary blade rake angle adopts a larger rake angle, so that the cutting capability of the rotary blade rake angle is weakened during reverse rotation, but more heat is generated and the heat dissipation is slower during friction of a bone surface, thereby generating controllable temperature rise on the bone surface, and achieving the effects of promoting protein denaturation and sealing coagulation of tiny blood vessels. Therefore, when the external driving grinding head body rotates forwards and reversely, the cooperation of efficient cutting and controllable heat accumulation can be realized, and the functions of bone tissue grinding and bone surface temperature control hemostasis can be synchronously completed, so that the dual-purpose effect of one machine is achieved. Further, the grinding head body is spherical, and the cutting edge extends radially along the maximum perimeter line of the surface of the sphere. When the grinding head body rotates, the spherical grinding head body can reduce stirring of water, and vortex generation is reduced, so that the operation visual field is better. Further, the positive rotation section and the reverse rotation section are communicated at the vertex of the grinding head body far away from the driving rod, and smooth transition is formed. With such an arrangement, complete replacement of the cutting and coagulation actions can be accomplished by both the forward and reverse rotating gr