Grid distal targeting device and distal targeting method

Abstract

The invention relates to a grid distal targeting device, comprising a distal targeting device and a grid device, wherein the grid device has a coordinate reference and is used for acquiring the position of an intramedullary nail for a user; the distal targeting device is used for distally targeting the intramedullary nail according to the position of the intramedullary nail acquired by the grid device. The invention also relates to a distal targeting method using the grid distal targeting device. By using the grid distal targeting device and the distal targeting method, the problem is solved that an existing interlocking intramedullary nail has difficulty in distal nail locking during surgical treatment of fractures; surgical difficulty is relieved, steps to mount and calibrate targeting instruments are fewer, surgical time is shortened, less radiation accumulates, and less iatrogenic injury is caused; the grid distal targeting device is simple in structure, easy to operate and good insafety and reliability.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to the field of medical instruments related to intramedullary nails, in particular to a grid distal collimator and a method thereof. Background technique [0002] Interlocking intramedullary nail fixation has become a routine method for the treatment of femoral and tibial fractures. It can control the shortening and rotational deformity of the fracture, and has the advantages of small surgical trauma, low infection rate, high fracture healing rate, and rapid recovery of limb function. However, the locking of intramedullary nails is a huge challenge for most surgeons, even for experienced clinical experts. In traditional clinical operations, due to long operation time, low precision, image distortion, accidental trauma and If the intramedullary nail is deformed during insertion, the success rate of intramedullary nail locking is greatly reduced. Currently commonly used distal lock...

AI Technical Summary

Problems solved by technology

[0006] (1) Insufficient experience: the surgeon is inexperienced and unskilled in operating instruments, which are the reasons why the locking nails cannot be locked. The reason for the difficulty in locking the distal end is the problem of operating experience;

[0007] (2) Deformation of the main nail: There are many reasons for the deformation of the main nail. Due to insufficient reaming, it is difficult to insert the intramedullary nail with bare hands. It must be driven in by force, which will definitely deform the intramedullary nail; the aimer drill is locked The force of the hole causes the displacement of the distal end of the bone to deviate, and the fixed assembly structure of the aimer cannot be adjusted flexibly in a timely manner after the deformation of the main nail, resulting in the inability of the aiming locator to be accurately positioned at the positioning point of the main nail, resulting in a locking failure

Time-consuming and labor-intensive, and it does not reduce the probability of pin misalignment

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