Ultrasonic Tissue Dissection Minimizing Dermis Damage
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Solution Overview
Problem
The separation of subdermal fat from dermis in tissue procurement is time-consuming and often damages the desired tissue components, especially when sharp instruments or high-energy devices are used, making it difficult to produce intact acellular tissue matrices for medical devices.
Innovation Solution
A method utilizing ultrasonic energy to selectively remove subdermal fat from dermis, minimizing damage by controlling ultrasonic process parameters such as frequency, power density, and cooling techniques to maintain dermal integrity, allowing for efficient separation without excessive heating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sharp instruments or high-energy devices are used to separate subdermal fat from dermis, then the separation process becomes faster and more efficient, but the desired tissue components (dermis) are damaged
Solution Approach 1:
The patent replaces mechanical cutting instruments with ultrasonic energy to separate subdermal fat from dermis. The ultrasonic device uses acoustic energy to selectively disrupt fat tissue while preserving the dermal matrix, achieving both rapid separation and tissue integrity without the damage caused by sharp instruments
Solution Approach 2:
The patent utilizes specific ultrasonic parameters (frequency, power density, pulse duration) to achieve selective tissue separation. By optimizing these parameters, the ultrasonic energy selectively targets fat tissue for removal while maintaining the structural integrity of the dermis, resolving the contradiction between separation efficiency and tissue preservation
2Productivity
If ultrasonic energy is applied to remove subdermal fat, then separation speed increases, but excessive heating may damage the dermis
Solution Approach 1:
The patent employs pulsed ultrasonic delivery rather than continuous energy application. The intermittent pulsed mode allows thermal dissipation between pulses, preventing excessive heat accumulation in the dermis while maintaining effective fat removal during the active pulses, thus balancing productivity with temperature control
Solution Approach 2:
The patent introduces a cooling medium or irrigation system as an intermediary between the ultrasonic source and the tissue. This cooling intermediary absorbs excess heat generated during ultrasonic dissection, protecting the dermis from thermal damage while allowing sustained high-power ultrasonic application for rapid fat removal
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method enables rapid and reliable removal of subdermal fat with minimal damage to the dermis, preserving its structural integrity and suitability for medical products like acellular tissue matrices, with the ability to control temperature and dissection speed.
Implementation Method 1
applying ultrasonic energy to the tissue to remove at least a portion of the subdermal fat from the dermis
Implementation Method 2
Ultrasonic energy is applied to the tissue to remove at least a portion of the subdermal fat from the dermis
Data Source
AI summary
Methods for dissecting tissues are provided. The methods comprise selecting a tissue site comprising dermis and subdermal fat connected to the dermis, and applying ultrasonic energy to the tissue to remove at least a portion of the subdermal fat from the dermis, wherein the ultrasonic energy is applied to minimize damage to the dermis.