Medical Device Thermal Insulation and Conductive Coating
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Solution Overview
Problem
Medical devices face challenges in minimizing heat transmission from thermal sources to tissues outside the treatment area during procedures that require both heat and high-frequency current, leading to unwanted tissue coagulation or damage.
Innovation Solution
A medical device design featuring a thermal source, a heat-insulating coating, and an electrically conductive coating on the outer surface of the base, with a laminated portion where the conductive coating is applied over the insulating coating, preventing heat and current from being transmitted to areas outside the treatment region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If heat is generated by the thermal source to treat the object, then the treatment effect is improved, but heat is transmitted to living tissue other than the object to be treated
Solution Approach 1:
The base is designed with spatially varying thermal properties: the first region has high thermal conductivity to efficiently transmit heat to the object to be treated, while the second region has low thermal conductivity to prevent heat transmission to surrounding tissue. This local differentiation of thermal conductivity resolves the contradiction between effective heat treatment and prevention of heat damage to surrounding areas.
Solution Approach 2:
The base is segmented into functionally distinct regions: a first region for active heat treatment with high thermal conductivity, and a second region for heat isolation with low thermal conductivity. This segmentation allows the device to simultaneously achieve effective local heating while preventing unwanted heat spread to surrounding tissues.
2Power
If high-frequency current is supplied to the base, then coagulation of the object to be treated is achieved, but current may be transmitted to areas outside the treatment region
Solution Approach 1:
The base exhibits spatially varying electrical conductivity: the first region has high electrical conductivity to enable effective coagulation of the object to be treated, while the third region has low electrical conductivity to prevent current transmission to surrounding tissue. This local differentiation resolves the contradiction between effective coagulation and prevention of current spread.
Solution Approach 2:
The base is segmented into functionally distinct electrical conductivity regions: a first region for active coagulation with high electrical conductivity, and a third region for current isolation with low electrical conductivity. This segmentation enables the device to concentrate current in the treatment area while preventing unwanted current flow to surrounding tissues.
3Temperature
If the base has high thermal conductivity for effective treatment, then heat transmission to the object is improved, but heat is transmitted to areas outside the gripping region
Solution Approach 1:
The base incorporates regional differences in thermal conductivity: the first region maintains high thermal conductivity for effective heat transmission to the object, while the second region uses low thermal conductivity material to block heat transmission outside the gripping region. This local quality differentiation resolves the contradiction between effective heat treatment and heat isolation.
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
Effectively reduces heat invasion to tissues outside the treatment area while ensuring proper application of high-frequency current and heat to the targeted tissue, enhancing the precision and safety of medical treatments.
Implementation Method 1
a first coating that contacts one part of the outer surface of the base from the outside and that is less thermally transmitting than the base
Implementation Method 2
a second coating that is provided on the outer surface of the base, is exposed, is electrically conductive, and supplies a high-frequency current to an object to be treated
Implementation Method 3
a thermal source that generates heat and a base that has an outer surface that receives the heat
Data Source
AI summary
A medical device includes a thermal source that generates heat, a base that has an outer surface and to which the heat from the thermal source is transferred, a first coating that contacts one part of the outer surface of the base and a second coating that is provided on the outer surface of the base, and is exposed and electrically conductive. The second coating supplies, a high-frequency current to an object to be treated. The medical device also includes a laminated portion that includes the first coating in the outer surface of the base extends and a portion of the second coating that is laminated on the first coating.