Positioning guide device and method for minimally invasive bone cutting

Abstract

The invention provides a positioning guide device and method for minimally invasive bone cutting. The positioning guide device for the minimally invasive bone cutting comprises a positioning device and a guiding device, wherein the positioning device is composed by a positioning block and a positioning rod fixedly connected to the positioning block, two ends of the positioning block are provided with through holes, the top end of the positioning rod is provided with an auxiliary rod, and the axial direction of the auxiliary rod is perpendicular to the connection line of the through holes at the two ends of the positioning block; the guiding device is composed by a positioner and two sliding blocks, the positioner is provided with two positioning holes at intervals and a sliding plane, thesliding plane is provided with two parallel guiding slots, and the connection line of the two positioning holes is perpendicular to the guiding slots; two sliding blocks both are provided with guidingblocks, and the guiding blocks are correspondingly embedded in the guiding slots; the guiding device is provided with a locking mechanism used for oppositely fixing the sliding blocks and the positioner; the two sliding blocks both are provided with bone cutting guide through grooves, one side of each bone cutting guide through groove is provided with an opening, the bone cutting guide through grooves on the two sliding blocks are overlapped, and the directions of the openings are opposite; and the space between the two positioning holes of the positioner equals to the space between the two through holes of the positioning block.

Description

technical field [0001] The invention belongs to the field of medical technology, and in particular relates to a minimally invasive positioning instrument for orthopedic osteotomy and a positioning method thereof. Background technique [0002] In orthopedic surgery, it is usually necessary to cut off the long bone at a special position, and the cut end of the target bone should only be angled on a certain plane to achieve the purpose of treatment. Otherwise, serious iatrogenic deformities will occur. Traditional surgery usually needs to fully expose the bone segment, and cut off the target bone visually. There is no good way to guide under minimally invasive conditions. This method is traumatic and has measurement errors with the naked eye. It often fails, and usually requires multiple attempts, prolonging the operation time , Increase trauma and increase the difficulty of surgery. Contents of the invention [0003] The purpose of the present invention is to propose a min...

AI Technical Summary

Problems solved by technology

Traditional surgery usually needs to fully expose the bone segment, and cut off the target bone visually. There is no good way to guide under minimally invasive conditions. This method is traumatic and has measurement errors with the naked eye. It often fails, and usually requires multiple attempts, prolonging the operation time , increase the trauma, increase the difficulty of surgery

Images