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femoral self-locking intramedullary nail

An intramedullary nail and self-locking technology, which is applied in the field of orthopedic medical devices, can solve the problems of incomplete control of fracture end rotation and lateral fretting, and achieve the effects of convenient surgery, poor anti-rotation ability, and rotation prevention

Active Publication Date: 2019-03-08
SUZHOU GEMMED MEDICAL INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent can partially prevent the torsion of the broken end of the fracture, but it cannot completely control the rotation of the broken end of the fracture, the lateral fretting, etc.

Method used

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  • femoral self-locking intramedullary nail
  • femoral self-locking intramedullary nail
  • femoral self-locking intramedullary nail

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Experimental program
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Embodiment Construction

[0027] Preferred embodiments of the present invention are described below with reference to the accompanying drawings.

[0028] Such as Figure 1 to Figure 6 As shown, a femoral self-locking intramedullary nail of the present invention comprises a main nail 1, an auxiliary nail 2, a helical blade nail 3, a tail cap 4 and a tunnel 6, the distal end of the main nail 1 is provided with a connecting portion 5, and the helical blade nail 3 is sleeved on the connecting portion 5, and the helical blade nail 3 can freely rotate through the connecting portion 5, the distal end of the main nail 1 is evenly provided with outwardly diverging channels 6, and the auxiliary nail 2 is inserted into the main nail 1, The auxiliary nail 2 is a beam body composed of rigid needles 21 corresponding to the number of holes 6, and the rigid needles 21 pass through the corresponding holes 6. The proximal end of the main nail 1 is an open structure, and the tail cap 4 is connected to the open hole of th...

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Abstract

The invention provides an auto-locking intramedullary nail for the thighbone and relates to the technical field of medical equipment for the department of orthopedics. The auto-locking intramedullary nail comprises a main nail, an auxiliary nail, a screw blade nail, pore channels and a tail cap, wherein a connecting part is arranged at the distal end of the main nail; the screw blade nail is connected onto the connecting part in a sleeving manner and can freely rotate through the connecting part; the pore channels spreading outwards are uniformly arranged in the circumferential direction of the distal end of the main nail; the auxiliary nail is inserted into the main nail and is a bunchy body formed by rigid needles with the number corresponding to the number of the pore channels, and the rigid needles penetrate out of the corresponding pore channels; the proximal end of the main nail adopts an open structure; the tail cap is connected to the open structure of the main nail and connected with the auxiliary nail in the main nail. The auto-locking intramedullary nail can apply sufficient pressure to a fracture line and prevent the bone from rotating malposition effectively.

Description

technical field [0001] The invention relates to the technical field of orthopedic medical devices, in particular to a femoral self-locking intramedullary nail. Background technique [0002] Fracture refers to a disease in which bone is partially or completely broken due to trauma or pathology. The treatment of fractures follows the three basic principles of reduction, fixation, and functional exercise. Reduction is to restore the displaced fracture end to normal or close to the original normal position after the fracture, so as to restore the support function of the bone. After fracture reduction, if there is no firm fixation, redisplacement is easy to occur, so corresponding fixation should be given after fracture reduction to promote fracture healing. [0003] The commonly used fixation methods for fractures are divided into external fixation and internal fixation. With the continuous improvement of internal fixation materials and surgical methods, as well as the change...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/72A61B17/74
CPCA61B17/7216A61B17/7241A61B17/725A61B17/744A61B2017/564
Inventor 陈学东
Owner SUZHOU GEMMED MEDICAL INSTR
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