Adjustable pelvic fracture external fixator

Abstract

The invention relates to an adjustable pelvic fracture external fixator. The adjustable pelvic fracture external fixator consists of an upper pressurizing structure, a plane boss umbrella-type insection adjusting clip, an adjusting lock structure, a locking pin structure and a stable structure. The upper pressurizing structure consists of an upper two-end threaded pipe, a front-to-back U-shaped connecting block, an internal thread rotating wheel, a ring threaded rod, a cylindrical head threaded rod, a thin round bar and a hex socket cylindrical nut; the stable structure consists of a folding stable structure and a T-shaped lock sleeve stable structure; the folding stable structure consists of a folding arc semi-ring, a folding insection semi-ring with the umbrella-type insection, an insection head U-shaped head tube, an L-shaped rod piece, and another locking pin structure; and the T-shaped lock sleeve stable structure consists of a T-shaped lock sleeve, an insection pressing bowl, another insection head U-shaped head tube, the L-shaped rod piece and the another locking pin structure. Aiming at physiology arc crown structural characteristics of the pelvic, the adjustable pelvic fracture external fixator can be adjusted, and pressurized, enables needles to be threaded at a plurality of angles, has flexible and adjustable stability for connection of the pelvic fracture, and provides a convenient fixing condition for rescuing of pelvic trauma.

Description

technical field [0001] The invention relates to the technical field of orthopedic medical instruments, in particular to an adjustable external fixator for pelvic fractures. Background technique [0002] Pelvic fractures are mostly high-energy trauma, often associated with blood vessel, nerve, and visceral injuries. Pelvic fractures account for 1-2% of systemic fractures, while the mortality rate of unstable pelvic fractures combined with massive bleeding is between 20-50%. It has been reported in the literature that the early application of external fixation in trauma can reduce the mortality rate during recovery from 22% to 8%. Currently clinically used pelvic reduction external fixators, such as unilateral multifunctional external fixator combined fixer, AO combined pelvic bracket and other external fixators, have different adjustment functions from the mechanical structure of the pelvis, and their flexibility is limited. It has great limitations, not only more needles ar...

AI Technical Summary

Problems solved by technology

Currently clinically applied pelvic reduction external fixators, such as unilateral multifunctional external fixator combined fixer, AO combined pelvic support and other external fixators, differ from the mechanical structure of the pelvis in terms of adjustment function, and their flexibility is limited. It has great limitations, not only more needles are threaded, it is inconvenient to operate, but also brings many difficulties to functional exercise, so it needs to be improved

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