CN2805696Y

CN2805696Y - Medical electric bone saw

Info

Publication number: CN2805696Y
Application number: CN 200520108612
Authority: CN
Inventors: 周袭明
Original assignee: BEIJING YINPULAN TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: BEIJING YINPULAN TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2005-06-02
Filing date: 2005-06-02
Publication date: 2006-08-16
Anticipated expiration: 2015-06-02

Abstract

The utility model discloses a medical electric bone saw which comprises a shell body, a motor and a cutting device, wherein the cutting device comprises a saw blade and a swinging axle; the saw blade is fixed on the swinging axle by a saw blade nut; the motor is arranged in the shell body; a handle is arranged under the shell body; the handle is also provided with a switch and a power supply, and the motor is driven by the switch; the motor drives an eccentric shaft to synchronously rotate by an eccentric transmission shaft; the eccentric shaft drives the swinging axle to swing in a reciprocating mode by a swinging cross rod; the utility model largely enhances the bone cutting strength of the saw blade by a swinging cross force arm, and by the design of a ball bearing of the eccentric shaft, the utility model overcomes the defect of the large driving friction loss of the existing swinging saw to a great extent; additionally, the gun type design of the utility model has the advantages of convenient and swift use by doctors, bone cutting speed enhancement, operation time decrease and patient pain shortening.

Description

A kind of medical electric bone saw

Technical field

This utility model relates to a kind of medical apparatus and instruments, relates in particular to a kind of electric bone saw of the usefulness of performing the operation.

Background technology

The common deep dynamics of the bone saw that prior art adopted is big inadequately, and gearing friction consumption is also bigger, and because its volume is bigger, and weight is heavier, therefore brings many inconvenience to operation.

The utility model content

At the problem of above-mentioned existence, the purpose of this utility model is to provide a kind of deep dynamics of saw blade and small and exquisite medical electric bone saw of volume of increasing substantially.

For achieving the above object, a kind of medical electric bone saw of this utility model comprises: housing, motor and topping machanism; Described topping machanism comprises saw blade and swinging axle, and this saw blade is fixed on the described swinging axle by a saw blade nut; Described motor is installed in the described housing, and the below of described housing is provided with handle, also is provided with switch and power supply on this handle, by the described motor of this switch drive; Described motor drives an eccentric shaft by an eccentric drive shaft and rotates, and this eccentric shaft drives described swinging axle reciprocally swinging by a pendulum fork arm.

Further, the counterweight that is complementary with described eccentric shaft weight is installed on the described eccentric drive shaft.

Further, an end of described pendulum fork is a U type groove, and the other end is fixed on the described swinging axle, and described eccentric shaft is positioned at this U type groove, by its rotation described pendulum fork is swung.

Further, on the described eccentric shaft ball bearing is installed also.

Further, the inboard of two yokes of described pendulum fork U type groove is the arc line type curved surface.

Further, described arc line type curved surface and described ball bearing outer circumference surface begin the tangent line of camber line on the contacted line and the tangent line on the described ball bearing excircle coincides.

This utility model can improve the deep dynamics of saw blade greatly by the arm of force of pendulum fork, and passes through the ball bearing design of eccentric shaft, has overcome the big shortcoming of existing goose saw gearing friction loss to a great extent; In addition, the design of this utility model pistol-like, the doctor is more convenient in use, quick, helps improving deep speed, reduces operating time, shortens patient's misery.

Description of drawings

Fig. 1 is this utility model structural representation;

Fig. 2 is the amplification plan view of pendulum fork among Fig. 1;

Fig. 3 is the front view of Fig. 2;

The specific embodiment:

As shown in Figure 1, this utility model comprises: housing 1, motor 2 and topping machanism; Topping machanism comprises saw blade 9 and swinging axle 7, and saw blade 9 is fixed on the swinging axle 7 by a saw blade nut 10, and swinging axle 7 is fixing by bearing 8; Motor 2 is installed in the housing 1, and the below of housing is provided with handle 11, also is provided with switch 12 and power supply on the handle 11, and by switch 12 drive motors 2, power supply can be a battery, also can be external power supply; Motor 2 links to each other with an end of an eccentric drive shaft 3 by a motor connecting shaft 14, the other end of eccentric drive shaft 3 drives an eccentric shaft 5 and rotates synchronously, the counterweight 4 that is complementary with eccentric shaft 5 weight is installed on the eccentric drive shaft 3, and eccentric shaft 5 drives swinging axle 7 reciprocally swingings by a pendulum fork 6.Shown in Fig. 2,3, an end of pendulum fork 6 is a U type groove, and the other end is fixed on the swinging axle 7, and eccentric shaft 5 is positioned at this U type groove, and a ball bearing 13 also is installed on the eccentric shaft 5, by its rotation pendulum fork 6 is swung; In order to make rotation more steady, the inboard of two yokes of pendulum fork U type groove is designed to the arc line type curved surface, and arc line type curved surface and ball bearing outer circumference surface begin the tangent line of camber line on the contacted line and the tangent line on the ball bearing excircle coincides.

Claims

1, a kind of medical electric bone saw is characterized in that, comprising: housing, motor and topping machanism; Described topping machanism comprises saw blade and swinging axle, and this saw blade is fixed on the described swinging axle by a saw blade nut; Described motor is installed in the described housing, and the below of described housing is provided with handle, also is provided with switch and power supply on this handle, by the described motor of this switch drive; Described motor drives an eccentric shaft by an eccentric drive shaft and rotates synchronously, and this eccentric shaft drives described swinging axle reciprocally swinging by a pendulum fork arm.

2, a kind of medical electric bone saw according to claim 1 is characterized in that, the counterweight that is complementary with described eccentric shaft weight is installed on the described eccentric drive shaft.

3, a kind of medical electric bone saw according to claim 1 and 2 is characterized in that, an end of described pendulum fork is a U type groove, and the other end is fixed on the described swinging axle, and described eccentric shaft is positioned at this U type groove, by its rotation described pendulum fork is swung.

4, a kind of medical electric bone saw according to claim 3 is characterized in that, a ball bearing also is installed on the described eccentric shaft.

5, a kind of medical electric bone saw according to claim 4 is characterized in that, the inboard of two yokes of described pendulum fork U type groove is the arc line type curved surface, and this curved surface and described ball bearing outer circumference surface are complementary.