Tool for maintaining needling point of sacroiliac screw guide needle and regulating direction

Abstract

The invention discloses a tool for maintaining a needling point of a sacroiliac screw guide needle and regulating direction. The tool comprises a grinding drill, a sleeve, a sleeve fixer and a diamond point bit, wherein a working surface of a drill bit at the lower end of a grinding drill rod is an arc surface; the diamond point bit is inserted into a guide needle passage in the center of the grinding drill; a fixing wing clamp arranged on the drill rod of the grinding drill is locked into a locking slot in the drill rod of the grinding drill; the drill tip extends out of the drill bit of the grinding drill; the sleeve consists of two semicircular cylinders; the upper end of the sleeve is connected to the lower end of the sleeve fixer by screw threads; the center of the sleeve fixer is provided with a pipe cavity through which the drill rod of the grinding drill can pass; a fixing bolt is arranged on the wall of the pipe cavity and is used for fixing the sleeve on the drill rod of the grinding drill. The tool disclosed by the invention integrates the functions of maintaining the needling point of the screw guide needle and regulating the direction of the guide needle; a power drill is used for driving the grinding drill and the diamond point bit to rotate; an arc-surface opening is drilled in an iliac bone outer plate, and then the sleeve fixer, the sleeve and the diamond point bit are taken down; the directions of the drill rod of the grinding drill and the guide needle passage are regulated by motion of the drill bit of the grinding drill in the arc-surface opening.

Description

technical field [0001] The invention belongs to the field of minimally invasive surgery for pelvic injuries in trauma orthopedics, and in particular relates to a tool for maintaining and adjusting the direction of a sacroiliac screw guide needle during the process of percutaneously inserting a sacroiliac screw guide needle. Background technique [0002] Unstable posterior pelvic ring injuries often require surgical treatment to restore the anatomical relationship of the posterior ring and rebuild the stability of the posterior ring to facilitate early sitting up, getting out of bed, functional exercise and recovery. Percutaneous sacroiliac screw placement under the guidance of C-arm X-ray fluoroscopy monitoring has become a popular choice for its advantages of less trauma, less bleeding, lower incidence of complications (such as infection, etc.), faster recovery of patients, and less economic burden. The current treatment of choice for such injuries. [0003] Percutaneous s...

AI Technical Summary

Problems solved by technology

[0005] At present, the operation of percutaneous sacroiliac screw insertion under fluoroscopy is a simple manual operation, and there is no dedicated instrument tool to maintain the needle insertion point and adjust the direction of the guide needle

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