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intramedullary nail fixation device

A fixation device and intramedullary nail technology, applied in the field of intramedullary nails, can solve the problems of complex operation process, long bone damage, and long operation time, and achieve the effect of simple operation, short operation time and avoiding reoperation

Active Publication Date: 2018-03-06
BONE MEDICAL TECH OF SUZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used method is to fix the proximal and distal ends of the intramedullary nail on the long bone through bone nails. This method requires drilling the long bone and causing damage to the long bone. The operation process is complicated and the operation time is long.

Method used

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Experimental program
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Effect test

Embodiment 1

[0023] Such as figure 1 and figure 2 As shown, the intramedullary nail fixation device of the present invention is provided with a plurality of groups of through holes 11 along the axial length direction of the side wall of the hollow intramedullary nail 1, and an injection device can be cooperatively inserted into the hollow channel in the intramedullary nail to inject The device 2 includes an injection tube 21 with one end closed and the other end as an inlet, and the injection tube 21 can accommodate bone fillers. An exit port 212 is provided on the tube wall close to the closed end 211 of the injection tube 21 , and a piston rod 22 can be pushed into the injection tube 21 through the inlet end 213 . When the piston rod 22 is pushed into the injection tube 21, the bone filler is pushed out from the injection port 212, and injected through the through hole on the side wall of the intramedullary nail to fill the outer surface of the side wall of the intramedullary nail and ...

Embodiment 2

[0031] Another optional technical solution for limiting the filling range of the bone filler is that a plurality of cylindrical gauzes are sheathed on the outside of the intramedullary nail, and each group of gauzes on the side wall of the intramedullary nail are respectively connected to each other. The holes are respectively and correspondingly covered, so that the bone filler injected from each group of through holes is limited by the gauze and filled around the position of the group of through holes.

[0032] At the same time, in other embodiments, the gauze can also be set as a whole, and the gauze is sheathed on the outside of the intramedullary nail as a whole, and the gauze is tightened by a plurality of tightening belts to separate the gauze outside the intramedullary nail into multiple sections, and Each segment covers a group of through holes on the side wall of the intramedullary nail.

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Abstract

The invention discloses an intramedullary nail fixing device, in which a plurality of groups of through holes are arranged along the axial length direction of the side wall of the hollow intramedullary nail, and an injection device can be cooperatively inserted into the hollow channel in the intramedullary nail; the injection device It includes an injection tube and a piston rod; an exit port is arranged on the tube wall close to the closed end of the injection tube. Through the injection device, the bone filler is injected along the through hole to fill between the side wall of the intramedullary nail and the inner wall of the bone marrow cavity of the long bone, and the intramedullary nail is fixed by the solidified bone filler. The damage caused by the intramedullary nail to the long bone; the intramedullary nail and bone fillers retained in the long bone are all made of degradable materials, which gradually degrade during the healing process of the long bone, avoiding reoperation in the later stage, simplifying the operation process, and saving surgery costs.

Description

technical field [0001] The invention relates to an intramedullary nail for internal fixation of long bone fractures, belonging to the technical field of medical instruments. Background technique [0002] Intramedullary nail is a commonly used medical device for treating fractures. It is generally used for internal fixation of long tubular bones such as radius, humerus, femur, and tibia. It can control the axial force line of the fracture site and promote fracture healing. Therefore, The fixation of the intramedullary nail inside the long bone is very important. At present, the commonly used method is to fix the proximal end and the distal end of the intramedullary nail on the long bone through bone nails. This method requires drilling the long bone and causing damage to the long bone. The operation process is complicated and the operation time is long. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the defects...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/72
CPCA61B17/72A61B2017/00831A61B2017/00933A61B2017/564
Inventor 罗宗平杨惠林
Owner BONE MEDICAL TECH OF SUZHOU CO LTD
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