Distal lockhole positioning system for interlocking of intramedullary nail

An intramedullary nail and hole positioning technology, applied in the field of medical devices, can solve the problems of inconvenient manufacturing, installation and debugging, complex structure of the optical positioning system, low practicability, etc., and achieves simple and easy programming, shortened operation time, and simple structure. Effect

Inactive Publication Date: 2009-03-11
NANJING GENERAL HOSPITAL NANJING MILLITARY COMMAND P L A
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of complex structure, inconvenient manufacture, installation and debugging, and poor practicability of the current optical positioning system, and to invent a distal end of interlocking intramedullary nail with simple structure, convenient manufacture and use, and high positioning accuracy. keyhole positioning system

Method used

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  • Distal lockhole positioning system for interlocking of intramedullary nail
  • Distal lockhole positioning system for interlocking of intramedullary nail

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] As shown in Figure 1 and 2.

[0019] A positioning system for the distal keyhole of an interlocking intramedullary nail, which mainly consists of a rigid endoscope 2 (an endoscope with a rigid structure), a CCD 3 (charge-coupled device), a bracket 4, a reference rod 5, and a computer system 6 Composition, the bracket 4 is provided with a connecting piece 11 connected with the interlocking intramedullary nail 1 (as shown in Figure 3), the connecting piece 11 is a tubular structure integrally connected with the bracket 4, and it can pass through a conventional pin and hole structure Or the key and groove structure realizes the connection with the interlocking intramedullary nail 1, the rigid endoscope 2 passes through the connecting piece 11 from the outside of the bracket 4 and then extends into the interlocking intramedullary nail 1, and the CCD3...

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Abstract

A fat-end lock hole locating system for the interlocking intramedullary nail is composed of a rigid endoscope with a guide rod inserted in said interlocking intramedullary nail and connected with computer system via CCD, a CCD, a supporter with connecting part linked with said interlocking intramedullary nail, a reference rod fixed to said supporter and with deformation reference rule and locating hole or marker, and a computer system.

Description

technical field [0001] The invention relates to a medical device, in particular to a positioning device for fixing screw holes on an interlocking intramedullary nail, in particular to a locking hole positioning system at the distal end of an interlocking intramedullary nail. Background technique [0002] Due to its good clinical efficacy, interlocking intramedullary nails have been widely used in the treatment of long tubular shaft fractures. It has firm fixation and avoids the occurrence of axial and rotational deformities of fractures. However, due to the influence of the physiological characteristics of the backbone when the interlocking intramedullary nail is implanted into the backbone, the insertion end will undergo a large deformation (the amount of deformation at the other end is small and negligible), and due to the existence of individual differences in the human body, the amount of deformation Each is different, if the hole is drilled in the diaphysis according to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/90A61B17/72
Inventor 陈勇赵建宁王海涛
Owner NANJING GENERAL HOSPITAL NANJING MILLITARY COMMAND P L A
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