Pelvic Access Hip Joint Surgery Without Capsule Penetration
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Solution Overview
Problem
Conventional hip joint replacement surgeries involve penetrating the fibrous capsule and removing healthy femur bone, leading to prolonged recovery times and increased risk of complications such as blood clots and infections.
Innovation Solution
A pelvic drill is used to create a through-going hole in the pelvic bone from the abdominal side, allowing access to the hip joint without damaging the fibrous capsule, and a surgical method is employed to insert an artificial hip joint surface through this hole, reducing the need for traditional incisions and bone removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional hip joint replacement surgery is performed through lateral incision and capsule penetration, then access to the hip joint is achieved, but the fibrous capsule is damaged and healthy femur bone must be removed
Solution Approach 1:
The patent inverts the conventional surgical approach by accessing the hip joint from the pelvic side rather than the femoral side. A hole is drilled through the pelvic bone to reach the joint capsule intact, allowing surgical intervention without penetrating or damaging the capsule. This reverse approach preserves the fibrous capsule and eliminates the need for lateral incisions and healthy bone removal.
Solution Approach 2:
The patent introduces an intermediary access path through the pelvic bone rather than directly penetrating the hip joint capsule. By creating a tunnel through the pelvis and using specialized instruments to reach the joint space, the surgery can be performed without directly damaging the capsule or requiring large lateral incisions, thus preserving surrounding tissues.
2Ease of operation
If traditional hip replacement surgery is performed with large incisions and capsule penetration, then complete joint access is achieved, but recovery time is prolonged and risk of complications increases
Solution Approach 1:
By inverting the surgical approach to access the joint through the pelvis rather than through large lateral incisions, the procedure minimizes soft tissue disruption. This preserves the integrity of the fibrous capsule and surrounding muscles, leading to reduced postoperative pain, shorter hospitalization, and faster recovery compared to traditional open surgery.
Solution Approach 2:
The patent applies localized access through a small drilled hole in the pelvis rather than extensive lateral incisions. This localized approach concentrates the surgical intervention to the minimum necessary area, preserving the quality and integrity of surrounding soft tissues and muscles, thereby reducing recovery time and complication risks.
3Manufacturing precision
If conventional surgery removes healthy femur bone to accommodate prosthesis, then proper prosthesis placement is achieved, but loss of healthy bone tissue occurs
Solution Approach 1:
The patent inverts the conventional approach of preparing the femur by removing healthy bone. Instead, the prosthesis is accessed and positioned through a hole in the pelvis, allowing the femur to be preserved with minimal intervention. This reverse approach eliminates the need for extensive femoral bone removal while still achieving proper prosthesis placement.
Solution Approach 2:
The patent extracts the prosthesis placement procedure from the conventional femoral approach and relocates it to a pelvic access point. By taking out the need for femoral bone removal and performing the prosthesis insertion through the pelvic hole, the healthy femur bone is preserved while the prosthesis is still properly positioned in the hip joint.
Data Source
AI summary
A surgical and a laparoscopic/arthroscopic method for operating hip osteoarthritis using an instrument that is adapted to create a through-going hole placed in the acetabulum area from the abdominal side of the pelvic bone of the human patient. The instrument comprises: a driving member, a bone contacting organ in connection with said driving member, an operating device adapted to operate said driving member. The bone contacting organ is adapted to create a hole in the acetabulum area starting from the abdominal side of the pelvic bone through repetitive or continuous movement.