Interlocking intramedullary nail having photoelectric positioning system

A positioning system and intramedullary nail technology, which is applied in the field of medical devices, can solve the problems of increasing the chance of surgical infection, prolonging the operation time, and difficulty in locking the nail in surgery, and achieving the effects of shortening the operation time, avoiding X-ray radiation, and having a simple structure.

Inactive Publication Date: 2007-08-22
NANJING GENERAL HOSPITAL NANJING MILLITARY COMMAND P L A
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Problems solved by technology

However, due to the defect in the positioning system of the interlocking intramedullary nail, it brings great difficulties to the surgical locking nail, prolongs the operation time, and makes many doctors hesitate, and there are complications such as loosening of the locking nail and withdrawal of the nail after the operation, which increases the chance of surgical infection. risk
The defect of the current positioning system is that it uses in vitro simulation standard curvature positioning. Since the long tubular backbone has a physiological curvature and individual differences are large, it is impossible to formulate a unified standard, which will inevitably lead to inaccurate positioning.

Method used

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  • Interlocking intramedullary nail having photoelectric positioning system

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0014] As shown in Figure 1.

[0015] An interlocking intramedullary nail with a photoelectric positioning system, comprising a main interlocking intramedullary nail 1 and a positioning cavity nail 2, the main body of the main interlocking intramedullary nail 1 is the same as the interlocking intramedullary nail used in the prior art, It is made of steel pipe and has a cavity inside. The structure of the positioning cavity nail 2 is the same as that of the main interlocking intramedullary nail 1 and can be made of transparent plastic. One end of the main interlocking intramedullary nail 1 and the positioning cavity nail 2 are connected with the connecting rod 3; the two ends of the main interlocking intramedullary nail 1 extending into the medullary cavity of the human body are provided with a plurality of holes for wearing fixing bolts. The hole 4 is ...

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Abstract

An interlocking intramedullary nail is composed of a main interlocking intramedullary nail with several through holes on its front end for passing screws through them, a locating cavity nail with relative through holes on its front end, and a connecting rod for connecting the back ends of said both nails. It features that said both nails have respective laser generator and the rotary and fixed fluorescent screens are arranged on said connecting rod. Its advantage is high location accuracy.

Description

technical field [0001] The invention relates to a medical device, in particular to a device for treating fractures of long tubular bones, in particular to an interlocking intramedullary nail with a photoelectric positioning system. Background technique [0002] The progress of modern orthopedics has benefited from the advancement of materials and tools. Due to its good clinical efficacy, interlocking intramedullary nails have been widely used in clinics, especially for long tubular shaft fractures. Due to the abundant muscle attachment of the thigh, the long tubular shaft After fracture reduction and internal fixation with steel plates, the steel plate bears huge shear stress, and it is common for the plate to break clinically. However, due to the defect in the positioning system of the interlocking intramedullary nail, it brings great difficulties to the surgical locking nail, prolongs the operation time, and makes many doctors hesitate, and there are complications such as ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/72A61B17/86
Inventor 陈勇赵建宁
Owner NANJING GENERAL HOSPITAL NANJING MILLITARY COMMAND P L A
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