Split type acetabulum file system, control method and application

Abstract

The invention belongs to the technical field of medical instruments, and discloses a split type acetabulum file system, a control method and application. An inner hexagonal or quincuncial clamping groove is formed in the middle of the plane end of a semispherical planing file; a plurality of protruding arc-shaped planing blades are evenly distributed on the spherical surface of the semispherical planing file; the plane end of an acetabulum file body is connected with a connecting rod; and one end of the connecting rod is integrally provided with a hexagonal or quincuncial connector cooperating with the clamping groove. According to the acetabulum file, the contact position of the acetabulum file body and the connecting rod is hexagonal or quincuncial, and thus, when a power device or a handle makes the whole device to apply force to the acetabulum side through the connecting rod, the phenomenon that the connecting rod and the acetabulum file are inconsistent in rotating speed or idle is avoided, and accordingly, smooth acetabulum filing operation is realized in a minimally invasive incision under the monitoring of an endoscope; if acetabulum files of different models need to be replaced, only force applied to the acetabulum side needs to be removed, namely that the power system and the connecting rod are moved towards the far end; and the operation is convenient.

Description

technical field [0001] The invention belongs to the technical field of medical appliances, and in particular relates to a split acetabular rasp system, a control method and an application. Background technique [0002] Total hip replacement surgery is one of the most successful and widely used procedures in orthopedic surgery since the 20th century. The total number of patients undergoing this surgery in China is about 700,000 each year. Minimally invasive and rapid rehabilitation are the important goals of clinicians for total hip arthroplasty in recent years. Therefore, there has been a direct anterior total hip arthroplasty (DAA-THA) that can significantly reduce soft tissue damage. Traditional direct anterior total hip replacement uses a longitudinal incision of 10-12 cm. Clinically, it is often found that the incision at the junction of the proximal end of the longitudinal incision and the inguinal skin fold is prone to splitting, poor healing often occurs, and scars a...

AI Technical Summary

Problems solved by technology

[0006] 1 Integrated straight handle or crank tool, which cannot be used in the extremely short incision of the hip in minimally invasive anterior total hip replacement under endoscopy;

[0007] 2. Assembled tools with threaded interfaces are complicated to install and operate. Repeated twisting may also cause displacement of acetabular rasps, etc., affecting surgical accuracy

[0009] 1. If one wants to use an integrated straight handle or crank tool, the hip incision of minimally invasive anterior total hip replacement under endoscopy must be enlarged to about 10 cm, and even soft tissues such as muscles need to be stripped, which violates the principle of the operation;

[0010] 2. In the endoscopic minimally invasive anterior total hip replacement surgery, the assembly of the split acetabular file and connecting rod is completed under the endoscopic field of view. The endoscopic surgery itself has a high hand-eye coordination ability Requirements, under the field of view of the endoscope and in the narrow surgical space, the installation operation of the threaded interface tool is difficult to complete. Even if the installation is successful, in order to avoid the displacement of the tool caused by multiple twists, it may be necessary to repeatedly adjust the tool angle, or even use the intraoperative X-ray fluoroscopy clarifies the angle of the tool. In addition, because different types of acetabular reamers often need to be replaced many times during the operation, the interface of the thread structure will lead to the continuous superposition of complicated operation steps, which will eventually lead to increased operation time or unnecessary injuries to medical staff and patients. radiation damage

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