Monolithic Ceramic Surgical Forceps Insulation
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Solution Overview
Problem
Current medical devices, such as forceps, face challenges in providing effective tissue manipulation and energy application while minimizing tissue damage and maintaining structural integrity, particularly due to limitations in material selection that balance mechanical properties with electrical insulation and complex geometry manufacturing.
Innovation Solution
The use of ceramic materials with specific mechanical properties, such as yttria stabilized zirconia and zirconia toughened alumina, for structural components in medical devices, which offer dielectric behavior, high tensile strength, and the ability to form complex geometries, combined with sintering processes to create monolithic ceramic microstructures that eliminate the need for separate insulative coatings and simplify manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional metal materials are used for forceps structure, then mechanical strength and structural integrity are achieved, but electrical insulation capability deteriorates requiring separate insulative coatings
Solution Approach 1:
The patent merges the structural function and electrical insulation function into a single ceramic material. The forceps structure is made from ceramic material that simultaneously provides both mechanical strength and electrical insulation, eliminating the need for separate insulative coatings on metal components.
Solution Approach 2:
The patent uses ceramic material as a composite solution that combines the properties of structural strength and electrical insulation in one material system, replacing the traditional metal-plus-coating composite structure.
2Shape
If complex geometries are manufactured using traditional methods, then functional requirements are met, but manufacturing complexity and cost increase
Solution Approach 1:
The patent changes the material state parameter by using ceramic green body (unsintered ceramic) during manufacturing, which allows complex geometries to be formed more easily before final sintering. This parameter change enables complex shapes while reducing manufacturing difficulty.
Solution Approach 2:
The patent performs preliminary forming of complex geometries in the green body state before sintering. The complex geometric features are established in advance during the green body formation stage, making the overall manufacturing process simpler.
3Adaptability or versatility
If multiple separate components are used for forceps elements, then assembly flexibility is maintained, but device complexity and assembly steps increase
Solution Approach 1:
The patent combines multiple forceps elements into single integrated ceramic components. For example, the jaw body, cutting edge, and insulating surfaces are merged into one ceramic piece, reducing the total number of components while maintaining functional versatility.
Solution Approach 2:
The ceramic material serves multiple functions simultaneously: structural support, electrical insulation, cutting surface, and insulating barrier. This multi-functionality reduces the need for separate specialized components.
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 approach enables the creation of medical devices with improved tissue manipulation and energy application capabilities, reduced risk of tissue damage, and cost-effective, high-complexity geometries, while providing electrical insulation and structural integrity.
Implementation Method 1
The sintered ceramic microstructure provides a monolithic structure that eliminates the need for separate insulative coatings
Data Source
AI summary
A medical device and associated methods are disclosed. In one example, the medical device includes an electrosurgical forceps. In selected examples, one or more structural components of the electrosurgical forceps includes a sintered ceramic microstructure. In selected examples other medical devices, including a debrider and a lithotripter, include a sintered ceramic microstructure.