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Magneto-rheological polishing device for medical micro screw

A magnetorheological polishing and screw technology, which is applied in the direction of grinding/polishing equipment, surface polishing machine tools, machine tools suitable for grinding the edge of workpieces, etc., can solve the problems of difficult surface polishing of medical micro-screws, and achieve improved friction, The effect of improving polishing efficiency

Active Publication Date: 2020-07-03
ZHEJIANG CANWELL MEDICAL DEVICES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a magnetorheological polishing device for medical microscrews, which can effectively solve the problem of difficult surface polishing of existing medical microscrews

Method used

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  • Magneto-rheological polishing device for medical micro screw
  • Magneto-rheological polishing device for medical micro screw

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Embodiment Construction

[0013] Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0014] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " The orientation or positional relationship indicated by "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientation or position shown in the drawings The positional relationship is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation,...

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Abstract

The invention discloses a magneto-rheological polishing device for a medical micro screw. The device comprises a utensil, a magneto-rheological polishing solution, a magnetic field generator and a first motor. A processing cavity is formed in the utensil, the magneto-rheological polishing solution is located in the processing cavity, the bottom of the utensil is connected to a motor shaft of the first motor, the first motor drives the utensil to rotate, and the magnetic field generator is arranged below the utensil; the processing cavity comprises a bottom wall and a side wall, the bottom wallis arranged horizontally, the side wall comprises a vertical wall, an inclined wall and the arc-shaped wall, the inclined wall is located below the vertical wall, the inclined wall and the bottom wall are connected by the arc-shaped wall, the included angle between the inclined wall and the horizontal plane is 45-60 degrees, and a circular truncated cone is arranged at the center of the bottom wall. The magneto-rheological polishing device has the advantage that the medical micro screw in the utensil rubs with the magneto-rheological solution converted into the solid type under the action ofthe magnetic field generator, so that the surface of the medical micro screw is polished finely.

Description

technical field [0001] The invention relates to a medical micro-screw magnetorheological polishing device. Background technique [0002] At present, medical intramedullary nails and bone screws are mostly made of titanium alloy materials. The main problem of titanium alloy implant materials is corrosion. On the one hand, corrosion causes corrosion products to enter the human body, causing serious physiological hazards, such as tissue poisoning, cell Distortion, etc.; on the other hand, cause failure behaviors such as loosening and early fracture of the implanted prosthesis. The corrosion resistance of titanium alloy decreases with the increase of its surface roughness, among which smooth surface and microscopically rough surface have good corrosion resistance and low ion release rate. Therefore, it is particularly necessary to carry out proper surface finishing treatment on medical titanium alloy screw implants. Contents of the invention [0003] The purpose of the prese...

Claims

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Application Information

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IPC IPC(8): B24B1/00B24B31/10B24B31/12B24B31/14
CPCB24B1/005B24B31/10B24B31/12B24B31/14
Inventor 毕成王鸿云秋朋园
Owner ZHEJIANG CANWELL MEDICAL DEVICES CO LTD