Bendable Hip Joint Surgical Instrument via Pelvic Bone Access
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Solution Overview
Problem
Conventional hip osteoarthritis treatments, particularly hip joint surgeries, face challenges in minimizing tissue damage and facilitating full recovery due to the need for large incisions and penetration of the hip joint capsule, leading to prolonged hospitalization and restricted post-surgical activity.
Innovation Solution
A surgical instrument designed to operate through minimal access points, featuring a bendable or adjustable design that allows insertion through the abdominal wall and into the pelvic bone, enabling procedures like drilling, reaming, and prosthetic placement without extensive penetration of the hip joint capsule, utilizing a combination of mechanical elements for various surgical functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional hip joint surgery is performed through lateral incision and penetration of the hip joint capsule, then access to the joint is achieved for prosthesis placement, but tissue damage increases and recovery time is prolonged
Solution Approach 1:
The surgical instrument is divided into distinct segments: an abdominal portion that enters through the abdominal wall, a pelvic portion that passes through a hole in the pelvic bone, and a working end that reaches the hip joint. This segmentation allows access to the hip joint through separate, smaller incisions rather than a single large lateral incision, reducing overall tissue damage while maintaining surgical accessibility.
Solution Approach 2:
The instrument introduces an intermediary pathway through the pelvic bone (a hole created in the pelvic bone) that serves as a mediator between the abdominal approach and the hip joint. This intermediary route allows the instrument to reach the joint without directly penetrating the hip joint capsule, thereby reducing damage to this critical structure.
2Ease of operation
If conventional surgery requires penetration of the hip joint capsule, then prosthesis placement is enabled, but full functional recovery is restricted
Solution Approach 1:
The instrument uses the pelvic bone hole as an intermediary pathway that bypasses the need to penetrate the hip joint capsule. By delivering the prosthesis through this intermediary route, the capsule remains intact, ensuring full functional recovery while still enabling complete prosthesis placement capability.
Solution Approach 2:
Instead of approaching the hip joint from the lateral side and penetrating the capsule outward, the instrument inverts the approach by entering from the abdominal side, passing through the pelvic bone, and delivering the prosthesis from the opposite direction. This inverted pathway achieves the same surgical goal while preserving the capsule.
3Ease of operation
If large incisions are made for hip joint surgery, then adequate exposure is achieved, but hospitalization time increases
Solution Approach 1:
The surgical access is segmented into multiple small incisions (one in the abdominal wall, one for the pelvic bone hole) rather than a single large lateral incision. This segmentation reduces the total tissue disruption while maintaining adequate exposure through the instrument's design, thereby shortening hospitalization time from one week to potentially shorter durations.
Solution Approach 2:
The instrument incorporates flexible or bendable sections that allow it to navigate through the curved pathway from the abdominal incision through the pelvic bone hole to the hip joint. This flexibility enables adequate exposure and manipulation deep within the joint through a minimally invasive route, reducing the need for large incisions and associated hospitalization time.
Data Source
AI summary
A surgical instrument for operating hip joint osteoarthritis in a human patient is provided. The hip joint comprises an acetabulum, being a part of the pelvic bone, and a caput femur, being the proximal part of the femoral bone. The surgical instrument is adapted to assist in the operating of the hip joint osteoarthritis from the abdominal side of the pelvic bone of said human patient.