Injectable screw fixation system for femoral neck fractures

Abstract

The invention discloses an injectable screw fixation system for femoral neck fractures, wherein the injectable screw fixing system comprises a screw, a hollow guide rod and a double-channel high-pressure injection device; the screw comprises a screw body and a screw seat, a central through hole is formed in the screw body, screw body external threads are arranged on the outer wall of the front section or the whole section of the screw body, and a side hole communicated with the central through hole is formed in the side wall of the front section of the screw body; the screw base is integrally connected to the tail end of the screw body, a polygonal hole is formed in the screw base, and screw base external threads are arranged on the periphery of the screw base; a guide rod internal thread is arranged at the front end of the hollow guide rod; a guide rod external thread is arranged at the rear end of the hollow guide rod; the double-channel high-pressure injection device comprises a three-way connector and two high-pressure injectors, the three-way connector is provided with two inlets and an outlet, the two inlets are connected with the two high-pressure injectors respectively, a control valve is arranged on the three-way connector, and the outlet is used for being connected with the rear end of the hollow guide rod. According to the invention, treatment liquid can be effectively injected into a fracture part, clinical technical obstacles are practically solved, and the operation curative effect is improved.

Description

technical field [0001] The invention relates to orthopedic instruments, in particular to an injectable screw fixation system for femoral neck fractures, belonging to the technical field of medical instruments. Background technique [0002] Femoral neck fracture is a common clinical orthopedic injury. The mechanical characteristics of the femoral neck and the anatomical particularity of the blood supply of the femoral head lead to clinical complications such as femoral head necrosis and fracture nonunion after femoral neck fracture. During surgery, doctors often choose suitable implants according to the type of fracture and the individual conditions of the patient. At present, the commonly used fixation methods include the use of multiple cannulated screws, compression screws, dynamic hip screws, and lateral plate composites. [0003] However, regardless of the treatment method, disastrous complications such as fracture nonunion and avascular necrosis of the femoral head afte...

AI Technical Summary

Problems solved by technology

However, the difficulty in the clinical treatment of these two types of technical methods is that it is impossible to effectively inject the obtained stem cells or platelet-rich plasma into the fracture site, so that they can directly and fully play the role of repair

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