Calcaneal intramedullary fixation system and auxiliary placement instruments

Abstract

The invention relates to a calcaneal intramedullary fixation system and auxiliary placement instruments of the calcaneal intramedullary fixation system. The calcaneal intramedullary fixation system comprises a calcaneal intramedullary nail and fixing screws, wherein a clamping groove extending radially and an inner threaded hole extending axially are formed in the tail end of the calcaneal intramedullary nail, at least two through holes are further formed in the calcaneal intramedullary nail, the through holes are used for accommodating the fixing screws, the auxiliary placement instruments are used for locating and placing the calcaneal intramedullary nail and the fixing screws, and the auxiliary placement instruments comprise a connecting rod, a locking rod, a locating guide bracket, a fastening nut and a guide sleeve. The auxiliary placement instruments can be used for locating and placing the calcaneal intramedullary nail and the fixing screws used for treating calcaneal fracture, the defect that the wound is large in the traditional treatment for calcaneal fracture is overcome, and the minimally invasive treatment is realized.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a calcaneal intramedullary fixation system and auxiliary implantation devices applied to the minimally invasive treatment of calcaneal fractures. Background technique [0002] Intra-articular fractures of the calcaneus are the result of a high-energy injury, usually resulting from a fall from a height that concentrates the patient's weight on the heel. Calcaneal fractures are the most common of tarsal fractures, accounting for approximately 60% of all tarsal fractures and 2% of all fractures. The position of the foot at the time of injury, the size of the impact force, and the bone quality are all important factors that determine the degree of fracture comminution and the location of the fracture line. [0003] The Sanders classification is a widely used clinical classification method for calcaneal fractures. Such as figure 1 As shown, according to the CT30° semi-coronal scan, t...

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Problems solved by technology

[0006] Based on this, the present invention aims to provide a calcaneal intramedullary fixation system and auxiliary implantation instruments, which are used to solve the problem of large wounds, slow recovery, wound infection, marginal skin necrosis or secondary fractures treated with open reduction and internal fixation. Infection leading to technical problems such as wound non-healing complications

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