Odontoid process guidepin aiming device

Abstract

The invention discloses an odontoid process guidepin aiming device, which is provided with a connecting beam of which one end is inserted with a hollow guide drill used for sleeving a guidepin; the connecting beam at the end part is provided with a hollow guide drill locking device; the middle of the connecting beam is provided with a universal adjuster capable of being locked on the connecting beam; and an adjustable fixing post is inserted into the universal adjuster. The odontoid process guidepin aiming device can make axial leads of the hollow guide drill and an odontoid process in the same line, accurately determine angles and positions of the hollow guide drill and the guidepin, has accurate feed direction, is difficult to generate deviation, effectively solve the problems of shift of fastening screws and poor healing or deformed healing of odontoid process fracture, avoids puncturing dura mater spinalis and nerves, can drive in the guidepin for one time according to surgical requirements, shortens the time of a surgery, and reduces surgical wounds and complicating diseases.

Description

Odontoid Guide Pin Aimer technical field The invention belongs to the technical field of orthopedic surgery medical instruments, in particular to an odontoid guide pin aimer. Background technique Cannulated screw fixation for odontoid fractures through the anterior cervical approach has a history of 20 years. It is mainly used for Anderson type II and Anderson superficial type III odontoid fractures. The operation is difficult, which may lead to internal fixation screw deviation and poor healing of odontoid fractures. Or malunion, or even stab the dura mater and nerves. When performing internal fixation of odontoid fractures with screws, the first step is to penetrate the guide needle. Because the needle is thin and the distance is long, the direction of needle insertion is difficult to grasp and deviations are prone to occur. If it is necessary to correct and re-insert the needle, it is often difficult to avoid the original needle path, resulting in poor internal fixatio...

AI Technical Summary

Problems solved by technology

Cannulated screw fixation for odontoid fractures through the anterior cervical approach has a history of 20 years. It is mainly used for Anderson type II and Anderson superficial type III odontoid fractures. The operation is difficult, which may lead to internal fixation screw deviation and poor healing of odontoid fractures. or malunion, or even stab the dura mater and nerves

When performing internal fixation of odontoid fractures with screws, the first step is to penetrate the guide needle. Because the needle is thin and the distance is long, the direction of needle insertion is difficult to grasp and deviations are prone to occur.

If it is necessary to correct and re-insert the needle, it is often difficult to avoid the original needle path, resulting in poor internal fixation position and effect

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