Tissue Tensioning Assembly for Uniform Fixation Processing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current tissue fixation systems for medical devices face challenges in maintaining control of forces exerted on tissues over time, particularly for highly distensible and low thickness tissues, which can lead to deformation and alter the mechanical properties of the tissue.
Innovation Solution
The proposed material processing apparatus includes a holding member, a base, a tensioning member, an actuator, and inner members, which allow for controlled tensioning and processing of tissues, preventing deformation and maintaining uniform stress and strain states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If differential pressure processing systems are used to fix tissues, then fixation can be achieved, but control over forces exerted on tissues is lost leading to deformation
Solution Approach 1:
The patent implements feedback control through sensors that monitor forces applied to tissue during fixation and actuators that adjust differential pressure in real-time based on this feedback. This closed-loop system maintains precise control over forces exerted on tissue, preventing deformation while ensuring reliable fixation. The controller processes sensor data and dynamically adjusts processing parameters to keep tissue stress within target ranges.
2Productivity
If traditional fixation systems are used on highly distensible tissues, then processing can be performed, but large deformations are imparted during attachment altering tissue properties
Solution Approach 1:
The patent applies preliminary action by using actuators to gradually and controllably attach highly distensible tissues to the processing system before fixation begins. The system pre-positioning and gently securing tissues in a controlled manner prevents sudden large deformations that would alter mechanical properties. This gradual attachment process ensures tissues are properly positioned without imparting damaging stresses.
3Device complexity
If passive fixation systems are used, then system simplicity is maintained, but constant differential pressure cannot be maintained due to solution leakage through tissue
Solution Approach 1:
The patent employs feedback control where sensors continuously monitor differential pressure levels during fixation, detecting any pressure drops caused by solution leakage through tissue. The controller receives this feedback and automatically adjusts the actuator to restore and maintain constant differential pressure throughout the fixation process, ensuring consistent fixation quality despite tissue permeability.
4Stress or pressure
If active systems with pumps and pressure monitoring are used, then constant differential pressure is maintained, but system complexity and cost increase
Solution Approach 1:
The patent achieves multi-functionality by integrating multiple capabilities into a unified system. The actuator serves both to apply differential pressure and to adjust it in response to feedback, while the controller handles both pressure regulation and force monitoring. This integrated approach maintains constant differential pressure without requiring separate complex pump and pressure monitoring systems, reducing overall system complexity while achieving the desired pressure control.
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 solution enables the processing of tissues under controlled, uniform tension, reducing deformation and maintaining the mechanical properties of the tissue, thus producing a more consistent and suitable material for medical devices.
Implementation Method 1
The tensioning member is moveable relative to the holding member between a first position and a second position... enables the processing of tissues under controlled, uniform tension
Data Source
AI summary
Material processing apparatus, systems, methods, and products are described. An example of a material processing apparatus includes a holding member, a base, a tensioning member, an actuator, and a first inner member. The holding member defines a holding member passageway. The base is attached to the holding member. The tensioning member is partially disposed within the holding member passageway. The tensioning member defines a tensioning member passageway. The tensioning member is moveable relative to the holding member between a first position and a second position. The actuator is attached to the tensioning member and is moveable in a first direction and a second direction. Movement of the actuator results in movement of the tensioning member between its first position and second position. The first inner member is adapted to be disposed within the tensioning member passageway.