cranial lock device

Abstract

The invention discloses a skull lock device which comprises an upper lock piece, a lower lock piece and a screw rod with a screw section. A nut is arranged at one end of the screw rod, and a movable part is arranged between the nut and the screw section. The lower lock piece is arranged on the movable part in a sleeved mode, and can make reciprocating movement between the nut and the screw section. The other end of the screw rod is a free end, a handle is fixed at the free end, and the part, fixed at the free end of the screw rod, of the handle forms a bent part. The upper lock piece is placed on the screw section close to the free end of the screw rod, a fastening nut is further arranged between the upper lock piece and the screw section of the screw rod, the upper lock piece is fixed on the fastening nut, and the fastening nut is connected with the screw section of the screw rod in a screwed mode. The skull lock device has the advantages of being good in fixing effect, and good in safety performance of products.

Description

Technical field [0001] The invention relates to a medical appliance, in particular to a skull lock device used for skull reduction in craniotomy. Background technique [0002] Since craniocerebral diseases or trauma require craniotomy, and craniotomy will involve craniotomy and re-reposition of the skull, the orthotopic skull transplantation reconstruction caused by craniotomy requires the use of a skull fixation device. [0003] Refer to figure 1 with figure 2 , The existing craniotomy surgery uses a cranial fixation device for bone reduction and fixation, including a screw 1, upper locking plate 2 and lower locking plate 3. Both locking plates are tapped directly on the locking plate. Rotate the lower lock piece to the bottom of the screw to act as a tray, and the upper lock piece is screwed down to fix it, and then the screw is broken by a matching tool breaker 4 to break the excess part. [0004] Although the above-mentioned cranial fixation device also plays a role of fixation...

AI Technical Summary

Problems solved by technology

[0007] The beneficial effect of the present invention is that: the present invention reserves a movable part between the nut of the screw rod and the threaded section, so that the lower locking piece can reciprocate between the nut and the threaded section, and solves the problem of the lower locking piece due to surgical factors. For the problem of returning, a better fixing effect is obtained; a handle is fixed on the free end of the screw and a curved part is formed, which is convenient for breaking the handle and the screw without using a special breaker, and the operation is simple; in addition, a locking piece is also used A fastening nut is arranged between the screw rod, which can further improve the fixing effect, thereby helping to improve the safety performance of the entire device

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