3D positioning device for carpal navicular percutaneous screw setting technology and manufacturing method thereof

Abstract

The invention discloses a 3D positioning device for a carpal navicular percutaneous screw setting technology and a manufacturing method thereof. The 3D positioning device comprises a panel, a bottom plate and a needle guide port which are formed by 3D printing, wherein the panel is provided with a first mold cavity adaptive to facies palmaris dermatoglyph of the wrist, and the bottom plate is provided with a second mold cavity adaptive to the back face of the wrist; the panel is movably connected with the bottom plate, and the first mold cavity corresponds to the second mold cavity vertically;the needle guide port is formed in the panel and provided with a needle guide passage communicated with the first mold cavity, and the needle guide passage is constructed to guide a guide needle to run from tubercula ossis navicularis to the navicular proximal pole. According to the provided positioning device for the carpal navicular percutaneous screw setting technology, the guide needle and ascrew can be accurately embedded into the navicular bone auxiliarily. By applying the positioning device to set the screw to fix carpal navicular fracture, the positioning device has the advantages ofbeing minimally invasive and precise, shortening the operation time, reducing radiation damage caused by repeated fluoroscopy or radiography and the like.

Description

technical field [0001] The invention relates to an appliance for orthopedic surgery, in particular to a 3D positioning device for percutaneous nailing of the scaphoid bone and a manufacturing method thereof. Background technique [0002] The scaphoid is one of the eight carpal bones. The enlarged distal end and proximal end are called the far and proximal poles respectively, and the narrow middle is called the waist. This unique anatomical shape makes it the one with the highest fracture incidence among the carpal bones. Scaphoid fractures account for about 80% of carpal fractures, while lumbar fractures account for 70%-80% of scaphoid fractures. [0003] The irregular shape of the scaphoid makes the fracture line easy to be blocked in ordinary X-ray films, resulting in missed diagnosis. In addition to its unique blood supply system, the necrosis rate of proximal fractures and fracture nonunion rate are high. Therefore, until The research and discussion around scaphoid frac...

AI Technical Summary

Problems solved by technology

[0011] The present invention aims at at least to a certain extent to solve related technical problems such as inaccurate nail placement, navicular bone and soft tissue damage caused by repeated nail placement, and repeated filming during surgery.

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