Navigation system for intramedullary reduction of diaphysis fractures

Abstract

In order to solve above technical problems, the invention provides a navigation system used for shaft fracture intramedullary reduction. The system comprises a marrow cavity endoscope, an image display module, a computer, an electromechanical control module, and a mechanical traction frame. The image display module is electrically connected between the marrow cavity endoscope and the computer. The electromechanical control module is electrically connected between the mechanical traction frame and the computer. The marrow cavity endoscope acquires image signals of proper positions, and transmits the image data to the computer through the image display module. After the image data is displayed, analyzed and processed on the computer, a displacement instruction is transmitted to the electromechanical control module. The electromechanical control module drives the mechanical traction frame to complete corresponding displacement operation. The system is characterized in that operation is simple, axial alignment and rotation alignment are realized, X-ray radiation damages are prevented, the system monitors reduction state in real time, and is high in precision, and can maintain a satisfied closed reduction state for a long time.

Description

technical field [0001] The invention relates to the technical field of orthopedic medical devices, in particular to a navigation system for intramedullary reduction of bone fractures. Background technique [0002] With the advent of the era of biological internal fixation (Biological Osteosynthesis, BO), closed reduction and interlocking intramedullary nailing has become the mainstream technology for the treatment of diaphysis fractures. During the operation, the broken end of the fracture is fully retracted along the long axis of the backbone with the help of a traction table or a spreader, and then the doctor uses manipulation techniques or instruments to obtain a temporary reduction so that a gold finger or a guide wire can be inserted into the marrow after completion of reaming Nail, and finally complete the interlock. [0003] In the prior art, the operation of closed reduction and interlocking intramedullary nailing requires the monitoring and guidance of the auxiliar...

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Problems solved by technology

[0003] In the prior art, the operation of closed reduction and interlocking intramedullary nailing requires the monitoring and guidance of the auxiliary device C-arm fluoroscopy. Therefore, there are the following problems: (1) During the operation, the X-rays of the C-arm fluoroscopy device will not be available. Avoid causing iatrogenic radiation injuries to users; (2) The operation of the device is too complicated and relies too much on the experience of the operator, there is a lot of uncertainty, and it is impossible to obtain reset status information in real time or easily cause secondary damage to the patient , and postoperative recovery is unsatisfactory; (3) there is blindness in the reduction of the entire backbone, which may easily cause rotational displacement; (4) the satisfactory closed reduction state cannot be maintained for a long time, and the reduction is easy to be lost

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