Drill positioner and its registration method for intramedullary nailing

Abstract

The invention relates to a drill positioner for intramedullary nail fixation and a registration method thereof. The locator includes a sensor module, a drill bit fixing module, and a protective shell module matched with the drill bit fixing module. The drill bit fixing module is disc-shaped, and the center of the circle is provided with a first through hole. The front side of the drill bit fixing module is provided with a hollow conical Drill bit support unit, the protective housing module is installed on the back side of the drill bit fixing module, the center of the protective housing module is provided with a second through hole, the sensor module is installed between the drill bit fixing module and the protective housing module, and the center of the sensor module is provided with a second through hole. There are three through holes, and registration lines are also arranged on the drill bit fixing module. Compared with the prior art, the present invention can accurately realize the remote locking of the intramedullary nail based on the electromagnetic navigation system, helps the user to effectively control the drilling posture, greatly improves the one-time success rate of the distal locking, and at the same time significantly reduces the cost. time.

Description

technical field [0001] The invention relates to an auxiliary tool for intramedullary nail fixation, in particular to a drill positioner for intramedullary nail fixation and a registration method thereof. Background technique [0002] Distal tibial fractures induced by high-energy injuries are common clinical orthopedic diseases, which refer to fractures that occur in the middle and lower 1 / 3 of the tibia. Due to its special anatomical characteristics, such as poor blood supply and poor soft tissue coverage, it is prone to a variety of serious complications after fractures, such as malunion, soft tissue infection, fracture nonunion, etc., which affect the physical and mental health and survival of patients. Quality is adversely affected. As the stability and safety have gradually gained the attention of doctors and patients, interlocking intramedullary nails have gradually become the gold standard for the treatment of tibial shaft fractures. [0003] However, this technolog...

AI Technical Summary

Problems solved by technology

However, problems such as deformation and inaccurate positioning of the distal end will occur when the intramedullary nail is inserted, making the existing distal screw locking operation extremely difficult and taking up a lot of operation time; moreover, the techniques of free-hand distal locking and mechanical distal locking require Irradiating a large number of X-ray photos to overcome positioning deviation will cause a certain degree of harm and damage to both doctors and patients

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