Direction-adjustable acetabulum drilling tool

Abstract

The invention discloses a direction-adjustable acetabulum drilling tool. The direction-adjustable acetabulum drilling tool comprises a universal drill, and a guider; the universal drill consists of atransmission rod, and a universal drill bit mechanism; the universal drill bit mechanism is located on one side of the transmission rod; the guider consists of a main rod, an adjustable guide mechanism, a pressing mechanism, and a handle; the adjustable guide mechanism is located at one end of the main rod; the handle is located at one end, away from the adjustable guide mechanism, of the main rod; and the pressing mechanism is located on the outer side of the middle part of the main rod. The universal drill of the direction-adjustable acetabulum drilling tool is different from a traditional steel wire soft drill that the universal drill rotates through a spherical structure so as to achieve universal adjustment, so that cleaning dead corner is eliminated with complete postoperative cleaning realized, thereby enabling repeated use; and moreover, the angle of the front end of the guider can be adjusted through the adjustable guide mechanism, so that a proper guide angle can be found byan operator according to the space shape of the acetabular fossa, thereby ensuring more reasonable use of the universal drill and the guider.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a direction-adjustable acetabular drilling tool. Background technique [0002] The hip joint consists of the acetabular socket and the femoral head. Hip replacement, also known as artificial hip replacement, is to fix the artificial prosthesis, including the femoral part and the acetabular part, on the normal bone with bone cement and screws to replace the diseased joint and reconstruct the patient's hip joint. Normal function is a more mature and reliable treatment. Usually, when screwing the acetabular socket, it is first necessary to use an acetabular drilling tool to drill a hole in the acetabular socket. Due to the narrow space in the human acetabular socket, it is difficult to operate manually, so the general acetabular drilling tool includes a flexible front end. A soft drill and a guide for fixing the direction of the soft drill, while traditional acetabular...

AI Technical Summary

Problems solved by technology

[0003] 1. The soft drill needs to meet the two conditions of being bendable at the front end and having a certain rigidity. Traditional soft drills rely on tight and dense spiral steel wires to achieve this performance, which leads to the soft drill itself having many fine gaps. In clinical use, the blood and tissue of the human body will stick to the soft drill, which makes the cleaning of the drill very difficult. The cleaning of medical instruments used in clinical practice is very important, and there are very strict standards for cleaning. If the cleaning is not in place , it will lead to surgical infection, causing a very large risk, so the traditional soft wire drill can hardly be cleaned in place, and can be regarded as a disposable product, resulting in an increase in surgical costs and a waste of resources;

[0004] 2. The traditional guide is generally composed of a handle and a ring structure that guides the soft drill at the front end. The angle of the front end is not adjustable. However, during the operation, the guide and the soft drill should work together in the acetabular fossa with a small space. If the angle of the guide cannot be adjusted, it is likely to interfere with the tissue around the hip joint, resulting in further damage to the tissue and increasing the pain of the patient. At the same time, the doctor must match the angle of the tool to find the drilling position so that the guide It is difficult to use, and it is very dependent on the skills of doctors, which increases the difficulty of surgery;

[0005] 3. There is also an existing guide whose front end angle can be adjusted, but the transmission structure for adjusting the front end angle needs to open a deep hole on the main rod. There is a very small gap between the deep hole and other parts, and the internal formation is relatively small. Confined space makes it difficult to clean, which is not conducive to the maintenance and reuse of equipment

Images