Pelvic Drill Trans-Pelvic Hip Joint Access
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Solution Overview
Problem
Current surgical methods for treating hip osteoarthritis often require penetrating the hip joint capsule, leading to prolonged recovery times and increased risk of infection, as they involve extensive bone removal and manipulation of large blood vessels.
Innovation Solution
A pelvic drill is developed to create a through-going hole in the pelvic bone from the abdominal side, allowing access to the hip joint without injuring the hip joint capsule, thereby sparing the fibrous capsule and reducing the need for extensive bone removal and vascular manipulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the hip joint capsule is penetrated to access the joint, then surgical access is achieved, but recovery time increases and infection risk increases
Solution Approach 1:
The surgical approach is segmented into two distinct pathways: the traditional lateral approach that penetrates the joint capsule, and the novel trans-pelvic approach that accesses the joint through the pelvic bone without capsule penetration. This segmentation allows selection of the safer approach that maintains capsule integrity while still achieving surgical access.
Solution Approach 2:
The pelvic bone serves as an intermediary structure that provides an alternative access route to the hip joint. By drilling through the pelvic bone from the abdominal side, surgeons can access the joint space without directly penetrating the joint capsule, thus using the bone as a mediating pathway that avoids the harmful effect of capsule disruption.
2Ease of operation
If extensive bone removal is performed to access the hip joint, then joint access is achieved, but healthy bone tissue is damaged
Solution Approach 1:
Instead of removing large portions of bone to access the joint, the invention extracts only the minimal necessary bone tissue through a targeted drilling approach through the pelvic bone. This selective extraction minimizes loss of healthy bone tissue while still achieving the necessary surgical access to the hip joint.
Solution Approach 2:
The surgical approach transitions from the traditional lateral dimension (through soft tissues and capsule) to a new spatial dimension by accessing the joint through the pelvic bone from the abdominal side. This dimensional change in surgical approach allows access with minimal bone removal by utilizing the existing pelvic bone structure as an access pathway.
3Ease of operation
If large blood vessels are manipulated during surgery, then joint access is achieved, but risk of blood clots increases
Solution Approach 1:
The invention converts the potential harm of vascular manipulation into a benefit by choosing a surgical pathway that inherently avoids large blood vessels. The trans-pelvic approach through the bone structure naturally steers clear of the major vascular structures found in the lateral soft tissue approach, thus transforming the surgical pathway selection into a protective measure against clot formation.
Solution Approach 2:
Instead of approaching the joint through the lateral soft tissue route that requires navigating around large blood vessels, the invention inverts the approach by accessing the joint through the pelvic bone from the abdominal side. This inverted pathway eliminates the need to manipulate large vessels, as the bone provides a protected corridor that naturally avoids the vascular structures.
4Ease of operation
If the fibrous capsule is injured during surgery, then joint access is achieved, but joint functionality is compromised
Solution Approach 1:
The surgical plan is designed in advance to preserve the joint capsule by choosing the trans-pelvic approach before any capsule injury can occur. This preliminary decision in the surgical strategy prevents capsule injury from the outset, maintaining the integrity of this critical structure for optimal joint functionality and recovery.
Solution Approach 2:
The invention inverts the traditional surgical philosophy by prioritizing capsule preservation over ease of access. Instead of accepting capsule injury as an inevitable trade-off for surgical access, the inverted approach uses the pelvic bone as an access route that naturally spares the capsule, thus improving joint functionality outcomes.
Data Source
AI summary
A method of treating a hip joint of a human patient using a pelvic drill comprising a driving member, a bone contacting and an operating device for operating said driving member. The method comprise the steps of creating a hole passing through the pelvic bone and into the hip joint of the human patient, and providing at least one hip joint surface to the hip joint, through said hole in the pelvic bone of the human patient. In one embodiment the method includes inserting a needle or tube like instrument into the patient's body for filling a part of the patient's body with gas and thereby expanding a cavity within the body.