Bone joint forming device with selectable bone joints for clinical patients

Abstract

The invention discloses a bone joint forming device with selectable bone joints for clinical patients The bone joint forming device comprises a fixed die, a movable die is arranged at the upper end ofthe fixed die, and connection borders are arranged on the periphery of the upper end of the fixed die and the periphery of the lower end of the movable die; threaded holes are formed in the connection borders of the fixed die and the connection borders of the movable die, and a same screw rod is arranged in the same pair of the threaded holes; two electric retractable rods are arranged on the lower end face of the fixed die, a bone joint forming structure is arranged at the upper ends of the electric retractable rods, and a controlling switch is arranged at the front end of the fixed die. Thebone joint forming device is simple in structure and convenient to use, can manufacture endosteal prosthesis stems of different specifications by replacing bone joint forming dies of different types,accordingly guarantees the cooperation performance of the endosteal prosthesis stems and patients' bone joints, and meets the requirements for different endosteal prosthesis stems by different patients; more full-scale design is achieved, and application and popularization of products are facilitated.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a bone arthroplasty device that can be selected by clinical patients. Background technique [0002] Currently, patients with severe damage and loss of cartilage can be treated by replacing the joint with a silicone or metal alloy prosthetic material, which requires surgical removal of all of the patient's joint surface from one or more of the bones involved in the repair Or most of them, and then expand the space of the medullary cavity to fit the stem of the intraosseous prosthesis. However, at present, due to the poor compatibility between the stem of the prosthesis manufactured by the existing bone arthroplasty device and the bone joint of the human body, the bone joint Over time, osteolysis will eventually cause the prosthesis to need to be replaced, but due to the limited bone stock of the patient, there is a limit to the number of replacement operations that can be ...

AI Technical Summary

Problems solved by technology

[0002] Currently, patients with severe damage and loss of cartilage can be treated by replacing the joint with a silicone or metal alloy prosthetic material, which requires surgical removal of all of the patient's joint surface from one or more of the bones involved in the repair Or most of them, and then expand the space of the medullary cavity to fit the stem of the intraosseous prosthesis. However, at present, due to the poor compatibility between the stem of the prosthesis manufactured by the existing bone arthroplasty device and the bone joint of the human body, the bone joint Over time, osteolysis will eventually cause the prosthesis to need to be replaced, but due to the limited bone stock of the patient, there is a limit to the number of replacement operations that can be performed for arthroplasty, so how to manufacture a prosthesis that fits well with the patient Bone joints cannot be ignored, and the formation of bone joints is inseparable from the bone joint model, and the existing molds can only produce prosthetic stems with a fixed size during the production process, which cannot guarantee the accuracy of the prosthetic stem and the patient's bone. Joint performance, for which we provide a clinical patient-selectable bone arthroplasty device

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