Steel plate for medical equipment

Abstract

The invention relates to a medical appliance for orthopedic surgery, in particular to a steel plate for medical equipment. The steel plate provided by the invention comprises a steel sheet and a spherical ring, wherein the steel sheet is provided with a spherical hole in which the spherical ring can be arranged, the inner wall of the spherical hole is provided with an internal friction groove, the outer wall of the spherical ring is provided with an external friction groove which is anastomotic with the internal friction groove, and a positioning pin is riveted with the steel sheet. The steel plate provided by the invention has the advantages that the inner hole of the spherical hole is a tapered thread hole, therefore, the screw subjected to connection is not easy to drop from the spherical hole, and the operation is simple; the appearance of the spherical ring and the inner hole of the steel sheet are spherical, after the spherical ring and the steel sheet are assembled, the spherical ring can rotate freely in the spherical hole and is not easy to drop from the spherical hole; the outer wall of the spherical ring and the friction groove on the inner wall of the spherical hole effectively increase the frictional force between the spherical ring and the steel sheet, so that the spherical ring is easy to orientate; and the positioning pin can effectively prevent the following rotation of the spherical ring when the screw is screwed into the steel plate.

Description

technical field [0001] The invention relates to a medical appliance for orthopedic surgery, in particular to a steel plate for the medical appliance. Background technique [0002] At present, there are two types of steel plates used in medical devices: steel plates with adjustable angles and steel plates with non-adjustable angles. For adjustable angle steel plate: the screw is in direct contact with the steel plate hole, in order to prevent the screw from coming out, there is another part (such as a locking nail) to tighten the screw after it is screwed in, and the operation is more complicated; for the steel plate screw system that cannot adjust the angle : the screw and the steel plate are connected by taper threads, and the direction of the screw is fixed. When adjustment is required, the screw must be unscrewed, which is very inconvenient to use. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a steel plate...

AI Technical Summary

Problems solved by technology

For adjustable angle steel plate: the screw is in direct contact with the steel plate hole, in order to prevent the screw from coming out, there is another part (such as a locking nail) to tighten the screw after it is screwed in, and the operation is more complicated; for the steel plate screw system that cannot adjust the angle : The screw and the steel plate are connected by a taper thread, and the direction of the screw is fixed. When it needs to be adjusted, the screw must be unscrewed, which is very inconvenient to use

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