Dynamic Perineal Post for Localized Hip Distraction
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Solution Overview
Problem
Current methods for distracting the hip joint during arthroscopic surgery are limited by the need for external distraction devices that apply force across the entire leg, causing tissue trauma, nerve damage, and restricted access due to constrained geometry and pathways, leading to limited procedural duration and effectiveness.
Innovation Solution
A dynamic perineal post with adjustable geometry and integrated sensors that allows for controlled distraction forces, minimizing tissue pressure and optimizing access to the hip joint, enabling longer procedures with reduced complications and improved surgical access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If external distraction devices are used to distract the hip joint, then surgical access to the hip joint is improved, but tissue trauma and nerve damage occur due to force application across the entire leg
Solution Approach 1:
The patent extracts the distraction function from the entire leg and localizes it to the hip joint region only. The perineal post applies force locally at the hip joint through the greater trochanter, eliminating the need to apply distraction force across the entire leg length, thereby preventing tissue trauma and nerve damage while maintaining surgical access.
Solution Approach 2:
The perineal post acts as an intermediary device that transfers distraction force directly to the hip joint through the greater trochanter. This intermediary mechanism allows controlled local force application without requiring external devices that span the entire leg, resolving the contradiction between achieving surgical access and preventing tissue trauma.
2Duration of action of moving object
If external distraction devices apply force across the entire leg, then hip joint distraction is achieved, but the procedure duration is limited due to tissue damage risks
Solution Approach 1:
The patent extracts the harmful effect of full-leg force application and replaces it with localized hip joint distraction. By applying force only at the greater trochanter region rather than across the entire leg, the procedure can be maintained for longer durations without accumulating tissue damage risks.
3Ease of operation
If conventional distraction methods are used, then hip joint access is achieved, but the geometry and pathways remain constrained limiting procedural effectiveness
Solution Approach 1:
The perineal post is designed with movable components that allow dynamic adjustment of distraction vectors and angles. This dynamic capability enables the surgeon to adapt the distraction direction and magnitude to match specific procedural needs and patient anatomy, overcoming the constrained geometry of conventional fixed distraction methods.
Solution Approach 2:
The patent employs adjustable parameters including distraction force magnitude, application angle, and vector direction. These parameter changes allow optimization of hip joint access for different procedural requirements and patient anatomies, enhancing procedural effectiveness beyond conventional fixed-geometry distraction methods.
Data Source
AI summary
Apparatus for distracting the hip joint of a patient, said apparatus comprising:a perineal post for engagement with a leg of the patient, said perineal post comprising a first portion and a second portion, wherein said first portion is configured for mounting to a table, and further wherein said second portion is movable relative to said first portion so as to change the geometry of the perineal post relative to a patient supported on the table.