Device for repairing fractured bones and method for manufacturing device

A technology of bone and bone repair medium, applied in bone implants, medical science, prosthesis, etc., can solve the problem of poor biocompatibility and biomechanical properties, poor biodegradability and strength balance of fixation devices, materials - Problems such as poor bone tissue interface

Inactive Publication Date: 2015-03-04
HARBIN THE FIRST HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional bone cements have poor biocompatibility and biomechanical properties, poor material-bone tissue interface, and fixation devices have poor balance of biodegradability and strength.

Method used

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  • Device for repairing fractured bones and method for manufacturing device
  • Device for repairing fractured bones and method for manufacturing device
  • Device for repairing fractured bones and method for manufacturing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as figure 1 As shown, the device for repairing fractured bones consists of an outer sleeve 2 , an inner sleeve 3 and a connecting rod 4 . The two ends of the outer sleeve 2 are sleeved on the two ends of the tubular bone defect requiring bone grafting, and fixed by screws 5 . The inner sleeve 3 is located in the outer sleeve 2, the connecting rod 4 is inserted into the inner sleeve 3, the diameter of the connecting rod 4 matches the inner diameter of the inner sleeve 3, and the two ends of the connecting rod 4 are inserted into the marrow of the tubular bone 1 cavity. The connecting rod 4 is a rod-shaped or column-shaped structure, and an intramedullary nail can generally be used. The walls of the inner sleeve and the outer sleeve have a mesh structure, and the inner sleeve and the outer sleeve are made of degradable magnesium alloy. The degradable magnesium alloy material not only has bone grafting and enhanced fixation stability, but also It has the effect of ...

Embodiment 2

[0042] Such as figure 1 As shown, the method of using the device in Example 1 is as follows: first, fill the space between the outer sleeve 2 and the inner sleeve 3 with the patient's own high-quality cancellous bone; then pull the defective tubular bone 1 to both ends, Place the outer sleeve 2 and the inner sleeve 3 at the defect position of the tubular bone 1, and the two ends of the inner sleeve 3 are opposite to the center of the two ends of the tubular bone 1; then align the defective tubular bone 1 to the middle, so that the outer sleeve The two ends of 2 are set on the tubular bone 1 at both ends; the connecting rod 4 is driven from one end of the tubular bone 1 along the medullary cavity, and the intramedullary nail is generally used, and the intramedullary nail passes through the inner sleeve 3 and enters the tubular bone The medullary cavity at the lower part of 1 firmly connects the two sections of tubular bone 1; finally, the outer sleeve 2 is firmly connected to t...

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Abstract

The invention discloses a device for repairing fractured bones and a method for manufacturing the device. The device comprises an outer sleeve, an inner sleeve and a connecting rod. The inner diameter of the outer sleeve is matched with the outer diameters of two ends of a tubular bone defect position with bone grafting requirements, the inner sleeve is positioned in the outer sleeve, the outer sleeve is longer than the inner sleeve, the connecting rod is inserted in the inner sleeve, the diameter of the connecting rod is basically identical to the inner diameter of the inner sleeve so that the inner sleeve can be clamped by the connecting rod, and the connecting rod is longer than the inner sleeve by 0.5-2cm. The inner sleeve and the outer sleeve are made of biodegradable magnesium alloy, and degradable high-polymer films with biocompatibility when in human bodies cover the surfaces of the inner sleeve and the outer sleeve. The device and the method have the advantage that the device is excellent in strength and biocompatibility.

Description

technical field [0001] The invention relates to a device for repairing fractured (including bone defects) bones and a manufacturing method thereof, in particular to the use of special materials and bone repair media. technical background [0002] Fracture healing refers to the process of tissue repair between fracture ends, the end result of which is the return of damaged bone tissue to normal structure and biomechanical function, wherein the ends of the broken bone are rejoined and realigned. Fracture repair is performed when a broken bone needs to be restored to its normal position and function. Throughout the fracture healing phase, the bone must be held firmly in place and supported until it is strong enough to bear weight. In the absence of proper repair of the fracture, misalignment of the bone can occur, causing possible physical dysfunction of the bone or joints in that area of ​​the body. [0003] In the past, mainly rely on casts and splints to support the bone f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/56A61F2/28A61L31/02A61L27/12A61L27/18
CPCA61B17/56A61B2017/00526A61B2017/00836A61B2017/564A61F2/28A61F2/2846A61F2002/2835A61L27/12A61L27/18A61L31/022
Inventor 孟庆刚岳琦毕佳琦林琛孟鑫李卫曲志伟李宝林
Owner HARBIN THE FIRST HOSPITAL
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