CN110664459A

CN110664459A - Medical composite bone cutting machine

Info

Publication number: CN110664459A
Application number: CN201910978104.2A
Authority: CN
Inventors: 孙晓; 曾成; 肖腾; 袁锦龙; 俞毅; 杨加兵; 曾凡康; 李文杰; 李西宸; 刘武军
Original assignee: Hunan University of Technology
Current assignee: Hunan University of Technology
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2020-01-10

Abstract

The invention discloses a full-automatic medical composite bone cutting machine capable of effectively reducing the probability of bone chips mixed into muscle tissues, which is characterized by comprising a cutting device, a driving device, a storage device and a chip removal device. The cutting device comprises a cutter and a cutter base, the cutter is driven by the driving device to do high-frequency reciprocating motion up and down in the main body groove to perform occlusion cutting on the bone, and each feeding is meshed with the cutter base; the storage device is positioned inside the cutter and the cutter base and is a cavity for storing bone chips generated by cutting; the chip removal device is a bone chip removal device and is positioned at the upper end of the cutter, and the generated gas is introduced into the storage device through the connecting pipe to remove the bone chips in the storage device. The invention has the advantages of ingenious and practical structure, convenient and flexible operation, stable and accurate cutting, and can effectively reduce the probability of bone fragments mixing into muscle tissues, ensure the health of the muscle tissues at the incision position, greatly reduce the pain of patients and shorten the recovery time.

Description

Medical composite bone cutting machine

Technical Field

The invention relates to the technical field of orthopedic medical instruments, in particular to a medical composite bone cutting machine capable of effectively preventing bone fragments from being mixed into muscle tissues.

Background

At present, most of bone cutting instruments for orthopedic surgery are instruments such as a knife and a saw, the operation is rough, manual control is realized, and errors are easily caused by controlling the feed speed and the feed amount according to human perception. Different bones have different characteristics and different doctors have different physical conditions, which can have a significant impact on the success rate of the surgery for the patient. And bone fragments generated in the cutting process are mixed into muscle tissues and are difficult to separate, so that the recovery is difficult, the treatment effect is greatly reduced, and even the recovery is difficult.

Disclosure of Invention

Aiming at the problems that the existing orthopedic medical instrument can not accurately and stably control the bone cutting feed speed and the feed amount during the operation and bone chips generated during cutting are mixed into muscle tissues and are difficult to separate, thereby greatly influencing the treatment and the rehabilitation of patients, the invention provides the medical composite bone cutting machine which has stable and accurate cutting, flexible and convenient operation and can effectively prevent the bone chips from being mixed into the muscle tissues.

The invention is mainly realized by the following technical scheme:

a medical composite bone cutting machine comprises a cutting device, a driving device, a storage device and a chip removal device, and is characterized in that the cutting device comprises a cutter and a cutter base, the cutter is driven by the driving device and reciprocates up and down in a main body groove at a high frequency, and the cutter base are meshed to cut bones; the storage device is positioned in the cutter and the base and is a cavity, and the two parts of cavities are butted when the cutter is meshed with the cutter base; the driving device consists of a motor and a transmission mechanism; the transmission mechanism is transmitted to the transmission wheel by the motor through a belt, and then transmitted to the sliding block by the transmission wheel through gear connection, and the transmission block transmits the motion to the cutter through the sliding block; the chip removal device is positioned at the upper end of the mechanism, is connected with the upper end of the cavity in the cutter through a connecting pipe, and is connected with the storage device.

Further, the cutter and the base are hollow cylinders, and one end of the cutter and one end of the base are obliquely cut.

Furthermore, the middle of the cut inclined plane of the cutter protrudes outwards; the base is recessed by the middle of the inclined plane.

Further, the cutter and the base are sharp in edge and can be meshed.

Furthermore, the high-frequency up-and-down reciprocating motion amplitude of the cutter is adjustable.

Further, the storage device is a shaped cavity.

Preferably, the cavity can be cylindrical, polygonal or irregular.

Further, the driving device is powered by the motor and can be transmitted out by a gear mechanism, a belt wheel mechanism, a connecting rod mechanism and a combined mechanism.

Furthermore, the chip removal device can be of an air injection type, a hydraulic type and a powerful type.

Furthermore, the strength can be from top to bottom by applying external force to the bone fragments in the cavity by a rod, or from bottom to top or both ends of the cavity act simultaneously.

The invention can select different orthopedic surgery conditions

The invention has the following beneficial effects:

the medical composite bone cutting machine adopts the scheme that the electric control cutter reciprocates at high frequency to cut the bone, so that the stability of the cutting process and the accuracy of the cutting position can be effectively improved. Prevent that the bone fragment from sneaking into musculature, guarantee the integrality of incision position musculature, very big reduction patient's pain plays crucial effect to patient's recovery.

Drawings

FIG. 1 is a block diagram of a bone cutting machine;

FIG. 2 is a cross-sectional view of the cutter;

FIG. 3 is a cross-sectional view of the cutter base;

fig. 4 is a structure view of the driving wheel.

101 is a base cavity, and 102 is a cutter base meshing surface; 201 is a cutter face, and 202 is a cutter cavity; 1 is a bone cutting machine shell and 2 is a cutter. 3 is a cutter base, 4 is a sliding block, 5 is a guide rail, 6 is a transmission block, 7 is a transmission wheel, 8 is a belt, 9 is a motor, 10 is a handle, 11 is a chip removal device, 12 is a connecting pipe, 13 is a cutter cavity, 14 is a base cavity, and 15 is a button.

Detailed Description

Example 1

The embodiment provides a medical composite bone cutting machine, which is shown in figure 1. A medical composite bone cutting machine comprises a cutting device consisting of a cutter 2 and a cutter base 3; the driving device consists of a sliding block 4, a guide rail 5, a transmission block 6, a transmission wheel 7, a belt 8 and a motor 9; a storage device consisting of a cavity 13 and a cavity 14; the chip discharging device consists of a chip discharger 11 and a connecting pipe 12. Holding the handle 10, pressing the button 15, the motor 9 drives the transmission wheel 7 through the belt 8, the transmission wheel 7 is an incomplete gear with a certain number of teeth, and the transmission block 6 with a certain number of teeth on the inner surface can be driven to reciprocate up and down through gear meshing transmission. The left side of the driving wheel 7 is provided with teeth, and the right side of the driving wheel is provided with smooth profile anticlockwise rotation, the teeth of the driving wheel 7 are meshed with the inner wall on the left side of the transmission block 6 to drive the transmission block 6 to move downwards, and the teeth of the driving wheel 7 are meshed with the inner wall on the right side of the transmission block 6 to drive the transmission block 6 to move upwards to realize the up-and-down reciprocating motion of the transmission block 6. The transmission block 6 is connected with the cutter 2 through the sliding block 4, the sliding block 4 moves in the guide rail 5, the cutter 2 is driven to reciprocate up and down, the cutter 2 is in sharp meshing with the edge of the cutter base 3 to cut the bone, the cutter 2 is in smooth protruding meshing with the cutter base 3 by smooth concave meshing of the oblique end face, the bone has certain elasticity and can be pressed into the cutter cavity 13 and the base cavity 14, and the bone is temporarily stored in the cutter cavity 13 and the base cavity 14 due to the elasticity, when the cutter cavity 13 and bone chips in the base cavity 14 reach a certain amount, the connecting pipe 12 is connected to the upper end of the cutter cavity 13, the bone chips are pressed out of the cutter cavity 13 and the base cavity 14 in an air pressure chip removal mode.

Two gears are set according to the difference of the rotating speeds of the motor 9, the speed is low and high, the cutting is carried out in the initial working stage in a low-speed meshing manner, the gear is adjusted to be high after the cutting is stable, and the cutter 2 carries out reciprocating cutting quickly up and down.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A medical composite bone cutting machine comprises a cutting device, a driving device, a storage device and a chip removal device, and is characterized in that the cutting device comprises a cutter and a cutter base, the cutter is driven by the driving device and reciprocates up and down in a main body groove at a high frequency, the feeding amount is controllable, and the bone is cut by meshing the cutter and the cutter base; the storage device is positioned in the cutter and the base and is a cavity, and the two parts of cavities are butted when the cutter is meshed with the cutter base; the driving device consists of a motor and a transmission mechanism; the transmission mechanism is transmitted to the transmission wheel by the motor through a belt, and then transmitted to the sliding block by the transmission wheel through gear connection, and the transmission block transmits the motion to the cutter through the sliding block; the chip removal device is positioned at the upper end of the mechanism, is connected with the upper end of the cavity in the cutter through a connecting pipe, and is connected with the storage device.

2. The medical composite bone cutter as claimed in claim 1, wherein the cutter and the base are hollow cylinders, and one end is chamfered.

3. The medical composite bone cutting machine as claimed in claim 2, wherein the cutting blade is protruded from the middle of the chamfered surface; the cutter base is recessed in the middle of the inclined plane.

4. The medical composite bone cutter as claimed in claim 1, wherein the high frequency up-and-down reciprocating amplitude of the cutting knife is adjustable.

5. The medical composite bone cutting machine according to claim 1, wherein the storage device is a shaped cavity which can be a cylinder, a polygon or an irregular shape.

6. A storage device as claimed in claim 4, wherein the cavity is a separate space at a location of the osteotomy machine.

7. The medical composite osteotomy machine of claim 1, wherein said drive means is powered by an electric motor and is deliverable by a gear mechanism, a pulley mechanism, a linkage mechanism, or a combination thereof.

8. The medical composite osteotomy machine of claim 1, wherein said chip removal device is air-jet, hydraulic, or power.

9. The chip removal device according to claim 7, wherein said force is applied by a rod to the bone chips in the cavity from top to bottom, from bottom to top or both ends.