Fixator for comminuted intra-articular fracture of ankle
A comminuted fracture and fixator technology, applied in the directions of internal fixator, fixator, internal bone synthesis, etc., can solve the problem that the intra-articular bone comminuted fracture is difficult to reflect the superiority of treatment, and achieves simple structure, good stability, Wide range of effects
Inactive Publication Date: 2017-06-30
刘得恒
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Problems solved by technology
Therefore, the above-mentioned technical solution is more suitable for the combination of fractured long bone fractures, and it is difficult to reflect the structural advantages of treating comminuted fractures of intra-articular bones.
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[0020] Such as Figures 1 to 4 As shown, the ankle bone comminuted fracture fixator includes a top shell 1, a retractable rotary rod 2 and a number of inner bone fragment claws 3; Plate profile, which includes a rib 101 for covering the inner bone fragment claw 3 and matching the number and position of the inner bone fragment claw 3, a bottom base plate 102, and a central boss 103, and the central boss 103 The top end has a through hole 104 for the retractable rotary rod 2 to pass through, and the inside of the central boss 103 communicates with the groove 105 formed by the ridge 101; the retractable rotary rod 2 is equipped with double lug nuts 201, A connecting plate 4 is fixed at the bottom end of the retractable rotary rod 2; the middle part of the inner bone fragment claw 3 is hinged in the groove 105 of the raised edge 101 of the top shell 1 through a hinge shaft 301, and the inner end of the inner bone fragment claw 3 is set on the On the connecting plate 4 at the bott...
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The invention relates to a fixator for a comminuted intra-articular fracture of an ankle. The fixator comprises a top shell, a retractable rotary rod and a plurality of internal bone chip claws, wherein the top shell is a rigid plate profile which is in a multi-rowed frustum form as a whole and comprises raised edges, a bottom surface substrate and a center boss; a through hole is formed in the top end of the center boss, the inside of the center boss communicates with grooves formed by the raised edges; a connection plate is fixed at the bottom end of the retractable rotary rod; the middle of each internal bone chip claw is hinged with the grooves formed in the raised edges of the top shell through hinge shafts; and the inner side ends of the internal bone chip claws are built on the connection plate at the bottom end of the retractable rotary rod. According to the invention, fast overall retraction and expansion and individual fine tuning of the internal bone chip claws can be achieved; the fixator has the advantages that the stability after bone chips are restored is good and the accepting function restorative exercise is advanced; muscular dystrophy and dysfunction due to long-term inactivity of a joint are avoided; bone chip pins are added to component design, so that forward angulation and displacement of intra-articular fracture chip folding blocks can be effectively prevented; and the fixator has a wider application range in the field of comminuted articular fractures.
Description
technical field [0001] The invention relates to an orthopedic medical device, in particular to a fixer for bone comminuted fracture in the ankle joint. Background technique [0002] Comminuted fractures are a relatively common type of trauma in orthopedic patients, and are mainly bone comminuted fractures in the joints. However, in daily activities, the ankle is the pivot connecting the calf and the instep, and the calf muscles and foot muscles frequently Pulling makes the reduction and fixation of bone fragments in the ankle joint extremely unsatisfactory. Chinese patent (CN20101228) discloses a fixer for internal bone fractures, which includes several bone fragment hooks facing each other. The rear ends of the bone fragment hooks are hinged on a support rod. Reduce pressure, adjust the support rod to expand and contract, and use the retractable cover to tighten the bone fragment hook. The technical purpose of this invention is to improve the internal fixation scheme of s...
Claims
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IPC IPC(8): A61B17/68
CPCA61B17/68A61B2017/564
Inventor 刘得恒张鑫杨斌张增方
Owner 刘得恒