Heating Blade Unit With Thermosetting Resin Heat Insulation
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Solution Overview
Problem
Existing medical devices face issues with heat transfer blocking due to the integration of blades with resin having low thermal conductivity, leading to potential damage and reduced adhesive strength at the interface, especially when high temperatures are required for heating and sterilization.
Innovation Solution
A heating blade unit is designed with an electric heater adhered to a blade using a thermosetting resin cover that integrates on multiple surfaces, reducing thermal stress and improving adhesive strength through surface treatments and low thermal expansion coefficients, while maintaining high temperature efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the blade is integrally molded with resin having low thermal conductivity to block heat transfer, then heat insulation is improved, but adhesive strength at the interface deteriorates and damage occurs during high temperature heating and sterilization
Solution Approach 1:
The blade is divided into a metal blade body and a separate resin cover portion that is fitted over the blade. This segmentation allows the metal blade to maintain thermal conductivity for effective heating while the resin cover provides heat insulation, and the separate structure eliminates the adhesive interface problems that occur when materials are integrally molded together.
Solution Approach 2:
The heating blade unit combines metal and resin materials to create a composite structure. The metal blade provides thermal conductivity for heating, while the resin cover provides heat insulation. This composite approach allows both materials to contribute their advantageous properties without the adverse effects of integral molding.
2Temperature
If the blade is integrally molded with resin to block heat transfer, then heat insulation is improved, but thermal stress increases causing damage during high temperature operation
Solution Approach 1:
By separating the blade into a metal blade body and a resin cover portion that are fitted together rather than integrally molded, the structure can better accommodate thermal expansion differences between materials. The fit structure allows each material to expand and contract independently, reducing thermal stress concentration.
Solution Approach 2:
The design changes the structural parameters from an integral molded configuration to a fitted assembly configuration. This parameter change allows the system to better manage thermal stress by accommodating the different thermal expansion coefficients of metal and resin materials.
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
The solution enhances the durability and efficiency of the heating blade unit by preventing damage to the electric heater and adhesive layer, maintaining high temperature consistency, and reducing thermal stress, thus ensuring reliable operation and effective tissue treatment.
Implementation Method 1
an electric heater, a blade, and a cover made of a thermosetting resin
Implementation Method 2
a cover made of a thermosetting resin that integrates on multiple surfaces, reducing thermal stress
Data Source
AI summary
A heating blade unit, a treatment tool, and a method of manufacturing a heating blade unit are disclosed. The heating blade unit includes: an electric heater, a blade, and a cover made of a thermosetting resin. The blade includes a treatment surface, an installation surface that is provided on a side opposite to the treatment surface and on which the electric heater is installed, and a support surface that is provided at a position different from a position at which the installation surface is provided. The cover integrally covers the electric heater, and one or more surfaces of the blade.