Unlock instant, AI-driven research and patent intelligence for your innovation.

Backward-forward direction self-locking loose-proof bone nail

A self-locking, bone loosening technology, applied in the field of medical devices, can solve the problem of not being able to fundamentally prevent the loosening of bone nails

Inactive Publication Date: 2011-06-01
梁德富
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The "anti-loosening bone screw" with the patent number 200820077417.8 uses thread segments with unequal pitches to destroy the loosening path of the bone screw. However, the loosening process of the bone screw is a process of rotating counterclockwise in vibration along the thread direction. Even if thread segments with different pitches are set, the loosening of the bone screw cannot be fundamentally prevented because the thread directions of different thread segments are consistent.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Backward-forward direction self-locking loose-proof bone nail
  • Backward-forward direction self-locking loose-proof bone nail
  • Backward-forward direction self-locking loose-proof bone nail

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] The reverse self-locking anti-loosening bone nail consists of a cross recess 1, a nail cap 2, a cutting strip 3, a forward rod 4 and a reverse head 5.

[0017] The top of the advancing rod 4 is a flat cylindrical nail cap 2, and the upper surface of the nail cap 2 has a cross groove 1. The side of advancing rod 4 is threaded, and the thread direction of advancing rod 4 side is clockwise advancing direction. At the axial center of the forward rod 4, there is a cross-shaped slot that runs through the upper and lower ends of the forward rod 4. The upper end of the cross-shaped slot is on the upper surface of the nail cap 2. inside the cross groove 1. The side surface of the reverse conical head 5 is threaded, and the direction of the thread on the side of the head 5 is counterclockwise. There is a cross groove 1 on the upper surface of the revers...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to medical apparatus, in particular an inverting self-locking nail, consisting of cross recess, head of nail, cutting wood, forward rod and backward head. The lateral surface of the forward rod has screw thread in the direction of clockwise forward. A slot with the section of crisscross is positioned on the axle center of the forward rod. The lateral surface of turbinate backward head has screw thread in the direction of anticlockwise forward. The slot with *-shaped section is arranged on the axle center of the backward head. The section of cutting wood is crisscross strip shape and mounted in the crisscross slot of the forward rod and *-shaped slot of the backward head. The possibility that the nail quits in the clockwise or anticlockwise direction is prevented by the invention, and fixing effect of the nail is improved.

Description

technical field [0001] The invention relates to a medical device, in particular to an anti-sequential self-locking anti-loosening bone nail. Background technique [0002] The bone screws currently used clinically are all based on the structure and shape of civilian screws. Because the bones of the human body need to support muscles for various movements, many conventional bone screws will loosen after implantation, so patients have to be implanted again. Going into the bone nail brings pain to the patient. [0003] The "anti-loosening bone screw" with the patent number 200820077417.8 uses thread segments with unequal pitches to destroy the loosening path of the bone screw. However, the loosening process of the bone screw is a process of rotating counterclockwise in vibration along the thread direction. Even if thread segments with different pitches are provided, the loosening of the bone screw still cannot fundamentally be prevented because the thread directions of differen...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/86
Inventor 梁伟
Owner 梁德富