Hip Arthroplasty Guide Wire and Elongate Element
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Solution Overview
Problem
Traditional hip arthroplasty techniques require significant soft tissue dissection and hip dislocation, leading to increased recovery time and postoperative complications due to substantial iatrogenic soft tissue trauma.
Innovation Solution
The method involves using arthroscopic techniques with a femoral guide wire and elongate element to prepare the femur and acetabulum without dislocating the hip, allowing for minimal soft tissue dissection and maintaining the hip in a natural position, utilizing devices like outrigger and acetabulum guides for precise reaming and cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional open surgical techniques are used for hip arthroplasty, then adequate exposure of the hip joint is achieved, but significant soft tissue trauma and extended recovery time occur
Solution Approach 1:
The patent introduces a guide wire and elongate element as intermediary tools that enable arthroscopic access to the hip joint without requiring open surgical exposure. These intermediaries transmit mechanical forces and guide cutting instruments through small incisions, allowing the surgeon to perform arthroplasty procedures while minimizing soft tissue disruption and avoiding the need for large incisions that would extend recovery time
2Ease of operation
If hip dislocation is performed to enable tool access, then necessary surgical operations can be conducted, but substantial iatrogenic soft tissue trauma is caused
Solution Approach 1:
The patent replaces the mechanical system of open dislocation and direct visual exposure with an arthroscopic system that uses small-bore instruments and imaging guidance. The elongate element acts as a mechanical bridge that allows cutting instruments to reach the femoral head and acetabulum through minimal incisions without requiring the hip joint to be dislocated, thereby eliminating the soft tissue trauma associated with traditional dislocation techniques
3Object-affected harmful factors
If arthroscopic techniques are used with minimal incisions, then soft tissue trauma is reduced, but precise anatomical placement becomes more difficult
Solution Approach 1:
The guide wire and elongate element serve as precision intermediaries that transmit anatomical landmarks and orientation information from the small incision site to the deep hip joint structures. These intermediaries maintain stable reference frames that enable the surgeon to accurately position cutting instruments and prosthetic components despite the limited exposure provided by arthroscopic access, thereby achieving precise anatomical placement while minimizing soft tissue trauma
Data Source
AI summary
A hip replacement method in which includes making an anterior incision and a lateral incision proximate the hip joint. The method next includes preparing a femoral passage directed along an axis of the femoral neck of the femur. An acetabulum reamer coupled to a femoral elongate element installed in the femoral passage is used to ream the acetabulum. The femoral head is prepared using a tool coupled to a femoral elongate element installed in the femoral passage. An acetabular prosthesis is then installed using a femoral elongate element installed in the femoral passage. A femoral prosthesis is installed using a femoral elongate element installed in the femoral passage. All of the foregoing steps are performed without dislocating the hip joint.