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Mandrel of pressing type dental high-speed turbine handpiece

A pressing, dental technology, applied in dentistry, dental drilling, medical science and other directions, can solve the problems of short service life, easy wear of the chuck, unreasonable structure of the mandrel, etc. Strong holding effect

Inactive Publication Date: 2014-04-16
GUILIN WOODPECKER MEDICAL INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structure of these mandrels is unreasonable, resulting in insufficient clamping force of the mandrel to the bur, easy wear of the chuck, and short service life.

Method used

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  • Mandrel of pressing type dental high-speed turbine handpiece
  • Mandrel of pressing type dental high-speed turbine handpiece

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Experimental program
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Effect test

Embodiment Construction

[0017] Such as figure 1 As shown, the mandrel of a press-type dental high-speed turbine handpiece of the present invention includes a hollow cylindrical bushing 2 with openings at both ends and a four-leaf spring 1 nested in the bushing 2, and the front part of the bushing 2 is embedded A hollow cylindrical core shaft meson 3 with open ends is sleeved, and the four-lobed spring 1 is nested at the rear of the sleeve 2 . The four-leaf spring 1 is connected with a rebound device that controls its forward and backward movement to realize the disassembly and assembly of the bur. The rebound device includes a spring 5 and a pressing member 4, and the spring 5 is a rectangular spring. Described spring 5 is arranged between mandrel meson 3 and four-lobe spring 1, and one end of spring 5 is stuck on the rear end of mandrel meson 3, and the other end is stuck on the front end of four-lobe spring 1, and described pressing piece 4 and The rear end of four leaf spring 1 is connected. The...

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Abstract

The invention discloses a mandrel of a pressing type dental high-speed turbine handpiece. The mandrel comprises a hollow cylindrical shaft sleeve of which the two ends are opened, and a needle clamping piece nested in the shaft sleeve, wherein the front part of the shaft sleeve is nested with the hollow cylindrical mandrel meson of which the two ends are opened; the needle clamping piece is a four-pedal spring which is nested on the back part of the shaft sleeve; the four-pedal spring is connected with a rebounding device which controls forward and backward movement of the four-pedal spring to realize mounting and dismounting of a machine needle. According to the mandrel of the pressing type dental high-speed turbine handpiece provided by the invention, the four-pedal spring is nested inside the shaft sleeve, an axle hole for inserting the four-pedal spring of the machine needle is pressed tightly by utilizing the pressing force of a spring against the four-pedal spring, so that the machine needle is firmly clamped; besides, by using the rebounding device consists of a pressing member and the spring, the four-pedal spring can be pressed to an optimal position, the clamping force is large, and the machine needle can be mounted and dismounted quickly; moreover, the mandrel is not easily damaged and is long in service life.

Description

technical field [0001] The invention relates to oral medical instruments, in particular to a mandrel of a pressing dental high-speed turbine handpiece. Background technique [0002] The dental high-speed turbine handpiece came out in 1957. It is a high-speed rotary cutting medical device driven by airflow. The speed can range from 200,000 rpm to 600,000 rpm. It is mainly used for cutting teeth and preparing dental cavities. , Preparation of tooth shape and modification of tooth shape, etc. [0003] When the dental high-speed turbine handpiece is used, it needs to be installed with a suitable bur, and the high-speed rotation of the movement is used to drive the bur to rotate at a high speed to achieve grinding, cutting and other operations. According to the installation method of the bur, the existing dental high-speed turbine handpieces are mainly divided into push type and lock needle type. The press-type dental high-speed turbine handpiece does not require a needle locke...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61C1/08
Inventor 吴勋贤文国锋龙金源宁加康吴家德
Owner GUILIN WOODPECKER MEDICAL INSTR
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