Expandable Tissue Clamp for Consistent Cauterization and Tissue Protection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing medical devices for shunt treatments in heart failure patients face issues with variations in cauterization degree, thrombus formation, and tissue damage due to the exposure of energy transfer elements in blood.
Innovation Solution
A medical device with a clamping portion that includes outer peripheral portions guiding an energy transfer element to a back support portion, ensuring close contact with biological tissue and preventing energy transfer from unintended sites.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the energy transfer element is exposed to blood to perform cauterization, then the cauterization function is achieved, but variations in cauterization degree occur and thrombus formation and tissue damage may be caused
Solution Approach 1:
The patent introduces a tissue clamp as an intermediary between the energy transfer element and the blood. The tissue clamp securely holds the tissue against the energy transfer element, ensuring that energy is delivered only to the intended tissue target and not to surrounding blood or unintended sites, thereby eliminating thrombus formation and tissue damage while maintaining consistent cauterization
Solution Approach 2:
The patent applies local quality by creating a localized stable interface between the energy transfer element and tissue through the tissue clamp. The clamp ensures that only the specific contact area between the tissue and energy transfer element receives energy, while surrounding areas remain unaffected, achieving uniform cauterization without harmful effects to adjacent blood or tissue
2Device complexity
If the energy transfer element moves freely in the expansion body, then the device structure is simple, but the position of the energy transfer element relative to the tissue is unstable
Solution Approach 1:
The patent implements dynamics by allowing the tissue clamp and energy transfer element to move relative to each other along the expansion body's axis while maintaining their functional relationship. The clamp can be positioned at different locations along the expansion body, and the energy transfer element can move within the clamp, providing operational flexibility while ensuring stable tissue contact during cauterization
Solution Approach 2:
The patent segments the device into distinct functional components: the expansion body for structural support, the tissue clamp for tissue securing, and the energy transfer element for cauterization. This segmentation allows each component to perform its specific function optimally while maintaining overall system simplicity and position stability
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
Reduces variations in cauterization degree and prevents thrombus formation and tissue damage by stabilizing the energy transfer element's position, maintaining close contact with the tissue.
Implementation Method 1
an energy transfer element (22) that outputs energy
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
To provide a medical device that can reduce variations in the degree of cauterization by an energy transfer element, and can suppress generation of thrombus formation, tissue damage, and the like due to the cauterization. A medical device (10) includes an elongated shaft portion (20), and an expansion body (21) that is provided in a distal portion of the shaft portion (20) and can expand and contract in a radial direction, in which: the expansion body (21) includes a plurality of wire portions (50) that are linked with a shaft portion (30), and a clamping portion (51) that is formed by at least one wire portion (50) and clamps a biological tissue; the clamping portion (51) includes an energy transfer element (22) that outputs energy, and a back support portion (62); the back support portion (62) includes a receiving surface (63) that can face the energy transfer element (22) when the expansion body (21) expands; and the receiving surface (63) can be inclined so as to be approximately parallel to the energy transfer element (22), when the energy transfer element (22) moves toward the back support portion (62).