Novel high-strength self-sustaining locking bolt screwdriver

Abstract

The invention provides a novel high-strength self-sustaining locking bolt screwdriver. The novel high-strength self-sustaining locking bolt screwdriver comprises a screwdriver rod and fixing rubber coating, wherein the fixing rubber coating is made of a high polymer material; a fixing hole is formed in the far end of the screwdriver rod and comprises a counter bore and through holes, the counter bore is located in the center of the far end face of the screwdriver rod, and the through holes are distributed in the radial section of the screwdriver rod with the counter bore as the center; the counter bore and the through holes are filled through a rubber coating process to form the fixing rubber coating of a specific structure, and the fixing rubber coating protrudes relative to the plum blossom outer contour structure of the screwdriver; and when the screwdriver is matched with a locking bolt, the fixing rubber coating fills the matching gap between the plum blossom structure of the screwdriver rod and the locking bolt. According to the novel high-strength self-sustaining locking bolt screwdriver, the rubber coating structure of the specific shape is formed at the locking portion where the screwdriver rod is matched with the locking bolt, self-sustaining is achieved through interference fit, the head of the screwdriver rod has extremely high torsion resistance, and the novel high-strength self-sustaining locking bolt screwdriver is convenient and fast to use, high in practicability and wide in application range.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a novel high-strength self-holding locking bolt driver. Background technique [0002] In orthopedic surgery, such as internal fixation of the spine, it is necessary to implant corresponding vertebral body nails, connecting rods, etc., and usually a screwdriver is required to provide holding and locking functions for locking bolts. In the current surgical operation, first of all, a screwdriver is required to hold the locking bolt and screw it into the corresponding position of the vertebral body screw in advance. The screwdriver is generally slotted in the head, and elastically deforms when it is adapted to the locking bolt, so as to realize the tightening of the locking bolt. Self-supporting, after the corresponding surgical operation is completed, use another screwdriver that can withstand a certain torque to screw in the locking bolt and then lock it completely. It can be se...

AI Technical Summary

Problems solved by technology

This design has the following defects: (1) The structure is complex, the installation is difficult, and the precision required for use is high; (2) The head of the instrument has a slotted structure, which greatly reduces the strength and is prone to risks such as breakage during use; (3) Due to the small structure and small size of the locking bolt, the device has many components, poor practicability, and narrow application range

This design has the following defects: (1) The overall structure of the device is complex, with many accessories, and it is difficult to install; (2) The interior of the device is hollow, which will lead to weakening of the overall structural strength of the device, which is more risky during use; (3) The device is self-supporting Part of the operation is complicated, and it does not have strong practicability in surgical operations

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