Medical micro-power torsion screwdriver

Abstract

The invention provides a medical micro-power torsion screwdriver which comprises a screwdriver handle, a screwdriver rod, a coaxial mutually-clamped sleeve and a micro motor; a front end cover and a rear end cover are arranged at the front end and the rear end of the screwdriver handle respectively, a front end inserting opening is formed in the front end cover, the coaxial mutually-clamped sleeve and the micro motor are both located in the screwdriver handle, A spring is arranged between the coaxial mutually- clamped sleeve and the inner wall of the front end cover, the screwdriver rod penetrates through the front end inserting opening and an inner ring of the spring to be connected with one end of the coaxial mutual clamping sleeve, and the other end of the coaxial mutually-clamped sleeve is connected with the micro motor. By adopting a micro motor and a torsion control system, the problem of excessive physical labor caused by holding a handheld electric drill for a long time by medical staff is solved, and the adverse conditions of screw tail slipping and cold welding are avoided; a bit sleeve or an electric drill chuck is adopted, the medical micro-power torsion screwdriver is compatible with bits of different sizes, torsion is adjustable, the adaptability is high, bacterial contamination is obviously reduced compared with a common electric drill, andthe medical micro-power torsion screwdriver is very suitable for hospitals and medical staff.

Description

technical field

[0001] The invention relates to the technical field of medical instruments, in particular to a medical micro-power torque screwdriver. Background technique

[0002] The existing orthopedic power systems are all orthopedic electric drills, which are used to drill out the screw channel during the implantation of orthopedic internal fixators to facilitate the screwing in of the fixing screws. When locking the screw, due to the fine pitch of the screw, it takes a long time to screw in, which is time-consuming and labor-intensive, which greatly increases the workload of doctors and nurses. In clinical practice, an electric drill is sometimes used to assist in screwing in the screw. However, the electric drill is heavy and needs repeated screwing. Changing back and forth between the cutter head and the drill bit increases the workload of the instrument nurse, and the power of the electric drill is powerful. If you are not careful, the screw will be screwed to death...

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