Bone fixing device with bone nails

Abstract

The invention relates to a bone fixing device with bone nails. The bone fixing device comprises a fixing claw (11), a bone nail barrel seat (21), a fixing claw connecting rod (13) and a fastening part(31). With the center of the fixed section of a bone to be fixed as an original point, the expanding angle of the fixing claw relative to the original point is larger than 180 degrees; the bone nailbarrel seat (21) is provided with through holes containing the bone nails (51) and extending in the longitudinal direction of the bone nail barrel seat, and the bone nails (51) penetrate into the sclerotin of at least one side of the bone to be fixed through the through holes. The fixing claw connecting rod (13) is connected with the fixing claw (11) and is in sliding fit with the bone nail barrelseat (21), and therefore the bone nail barrel seat (21) can slide in the longitudinal direction. The fastening part (31) can make the bone nail barrel seat (21) and the fixing claw (13) to oppositelymove in the longitudinal direction (Z), and the front end of the bone nail barrel seat (21) abuts against the bone to be fixed. According to the bone fixing device, a full and reliable bone fixing effect is provided through a simple structure, and caused trauma is small.

Description

technical field [0001] The invention relates to a bone fixation device with a bone nail, in particular to a fixation device for the fracture end of a long bone. Background technique [0002] In medical practice, bone fixation often requires the use of bone screws. The prior art CN 202515750U discloses a bone fixation device with bone nails. [0003] refer to figure 1 , which is the accompanying drawing of CN202515750U. The fixator taught by this prior art comprises a distal single claw 2 and an auxiliary hook-type claw 8 . As described in paragraph 0024 of 750', the lesser trochanter of the femur is first hooked with the single claw 2, and then the driving screw 7 is rotated to drive the auxiliary claw 8 forward to engage with the single claw 2. Although the femur to be fixed is not shown in 750', those skilled in the art can confirm that the femur to be fixed is embraced between the single claw 2 and the auxiliary claw 8. [0004] The fixture in 750' also includes two ...

AI Technical Summary

Problems solved by technology

[0005] Above-mentioned prior art holder, although its drilling position can be selected as the best, it has the following disadvantages on the whole: one, in order to make the auxiliary claw 8 and the single claw 2 engage, the auxiliary claw 8 needs to move from bottom to top, and its The extra-osseous tissue on the moving route needs to be cut, which causes greater trauma; 2. The position selection device of the bone nail is relatively complicated, and the two arc-shaped guide rails perpendicular to each other undoubtedly increase the difficulty of design and manufacture

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