Osteotomy protector for unicompartmental knee arthroplasty

Abstract

The invention belongs to the technical field of medical auxiliary instruments, and provides an osteotomy protector for unicompartmental knee arthroplasty. The osteotomy protector comprises an arc-shaped protection section, a grab handle and a connecting section, wherein the arc-shaped protection section is composed of a first arc-shaped section and a second arc-shaped section; the arc-shaped protection section is matched with a joint in shape and size; the thickness of the arc-shaped protection section is 2-4 mm, and the width of the arc-shaped protection section is 1.5-3 cm; the first arc-shaped section is attached to the bone surface of the rear portion of the joint; and a gap is formed between the second arc-shaped section and the joint. Therefore, in the unicompartmental knee arthroplasty of a fixing pad, the arc-shaped protection section is located around the joint, a saw and tissue around the joint are separated, and ligaments, soft tissue and important blood vessels around the joint are prevented from being accidentally injured by the saw. Therefore, the protector forunicompartmental knee arthroplasty is easy to manufacture, low in cost and convenient to use; insertion operation is more convenient due to the arc-shaped design, the use is more convenient, the separation degree of the joint and the soft tissue or ligament or blood vessels around the joint is reduced, operative wounds are reduced, the patient can recover as soon as possible after an operation, and the large-scale popularization of the protector is facilitated.

Description

technical field [0001] The invention belongs to the technical field of medical auxiliary devices, and in particular relates to a unicondylar replacement osteotomy protector. Background technique [0002] Joint replacement is a method to treat severe arthritis. How to place the prosthesis accurately is the key to ensure good postoperative results. Before the prosthesis is installed, an incision needs to be made on the skin and muscle where the joint is located, and then a surgical cutting saw is inserted into the junction of the joint from the incision to process the bone and cut it into a suitable shape. Retractor protection is used during routine operations, that is, at least two retractors are used to hook the skin and muscles on both sides of the incision respectively, so as to avoid damage to the ligaments, soft tissues and important blood vessels and nerves next to the joint. However, for the sake of aesthetics and postoperative recovery, the incisions are small, which...

AI Technical Summary

Problems solved by technology

However, for the sake of aesthetics and postoperative recovery, the incisions are small, which is a minimally invasive operation. Therefore, it is easy to blur the vision during the bone treatment process, and it is easy to damage the adjacent ligaments, soft tissues, and important rear blood vessels and nerves during the operation.

The use of retractors in conventional operations is not thorough enough to effectively protect all the ligaments and soft tissues around the joint, especially the important blood vessels and nerves behind the joint opposite to the incision

Images