Fracture external fixing frame with adjustable axial pressure among bone blocks

An external fixator and pressurization technology, which is applied in the direction of external fixators and fixators, can solve the problems of inability to pressurize fracture fragments, and achieve the effects of increasing fixation stability, good quality, and increasing fixation angles

Active Publication Date: 2018-07-03
王培林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that when using the existing fracture fixation equipment to fix the fracture, it is often impossible to properly pressurize the fracture fragments

Method used

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  • Fracture external fixing frame with adjustable axial pressure among bone blocks
  • Fracture external fixing frame with adjustable axial pressure among bone blocks
  • Fracture external fixing frame with adjustable axial pressure among bone blocks

Examples

Experimental program
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Effect test

Embodiment Construction

[0029] In Embodiment 1, the main bracket 10 with the steel plate as the frame bar (two sections of steel plates are combined into an integral combined frame bar with a connecting device with a gas spring) is connected with screws 16, see figure 1 , Figure 5 , together constitute the external fixator. The steel plate is divided into two sections, respectively with the interface 1 of the connecting device and the plug 2 of the connecting device. The connecting device is formed after the plug and the interface are plugged together. The closed space in it is a pneumatic cylinder 3 filled with air. , the closed pneumatic cylinder 3 filled with air becomes an air spring device, through the charging hole 4, air can be filled or drawn out to change the elastic force of the air spring, through the charging hole (or another hole can be opened on the pneumatic cylinder) Connect the barometer to measure the gas pressure in the air chamber, and combine the cross-sectional area of ​​the g...

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PUM

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Abstract

The invention relates to a fracture external fixing frame and particularly relates to a fracture external fixing frame with an adjustable axial pressure among bone blocks, belonging to external fixation instruments for fracture treatment. According to the fracture external fixing frame, the problem that the space among fractured blocks usually cannot be properly pressurized when fracture is steadily fixed by virtue of an existing fixing instrument is solved. The fracture external fixing frame is characterized in that a frame rod is segmented, and one or two ends of each segment is / are providedwith plugs or interfaces; spring devices (including one or more of metal springs, gas springs and elastic matter pads) are arranged in the plugs or the interfaces and are spliced to form connecting devices for adjusting the axial pressure among the bone blocks, and the frame rod segments can form an integrated combined frame rod by the connecting devices. By adjusting the elastic forces of the whole spring devices, the action forces of the connecting devices on two frame rod segments on two sides in the long-axis direction are changed, and therefore, the axial pressure among the bone blocks is adjusted. The fracture external fixing frame is applied to fracture fixation, and when the fracture is steadily fixed, excessive stress shielding can be avoided, and the axial pressure among the bone blocks can be flexibly quantized, adjusted and controlled into a proper level required by fracture healing, so that fracture healing is promoted.

Description

technical field [0001] The invention belongs to the technical field of medical equipment, and in particular relates to an external fracture external fixator with adjustable axial pressure between bone blocks. Background technique [0002] In the clinical treatment of fractures, it is necessary to reduce and fix the fractures, restore the anatomical relationship between the fracture fragments, rebuild the stability of the bones, and restore the physiological functions of the bones as human scaffolds; at the same time, it is necessary to provide a suitable biological environment for fracture healing, such as minimizing the impact on Destruction of soft tissue and periosteum, maintain sufficient blood circulation, and maintain moderate pressure between fracture fragments to promote fracture healing. Modern fracture treatment proposes a new concept of BO (Biological Osteosynthesis) on the basis of the AO principle. While paying attention to the mechanical properties of fracture ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/64A61B17/66
CPCA61B17/6441A61B17/645A61B17/6491A61B17/66
Inventor 王培林
Owner 王培林
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