Fiber-Reinforced Thermoplastic Plug for CO2 Ablation
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Solution Overview
Problem
Existing CO2-cooled thermo-ablation instruments face challenges in manufacturing reliability and longevity due to material strain under high CO2 pressure, leading to potential fit issues and fractures in plastic components.
Innovation Solution
A fiber-reinforced thermoplastic plastic plug with ring grooves and seals, using materials like polycarbonate, polyamide, or polyimide with embedded glass fibers, which maintains structural integrity under high CO2 pressure and prevents elongation, ensuring a secure fit and prolonged operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a plastic plug is used in the ablation instrument, then manufacturing simplicity and cost are improved, but structural integrity and reliability under high CO2 pressure deteriorate
Solution Approach 1:
The plug is constructed as a composite structure combining plastic material with embedded reinforcement elements (such as metal or ceramic reinforcement). This composite approach maintains the manufacturing simplicity and cost advantages of plastic while significantly improving structural integrity and reliability under high CO2 pressure conditions.
2Ease of manufacture
If plastic components are used in the plug, then ease of manufacture is improved, but resistance to CO2 pressure and operational longevity worsen
Solution Approach 1:
The plug incorporates composite construction with plastic as the base material and embedded reinforcement elements. This structure enables the plug to withstand prolonged exposure to high CO2 pressure without degradation, significantly extending operational longevity while remaining easy to manufacture.
Solution Approach 2:
The reinforcement elements are pre-integrated into the plug structure during manufacturing, providing beforehand cushioning and structural support against CO2 pressure. This prevents premature failure and extends the operational lifespan of the plug throughout the procedure.
3Ease of manufacture
If standard plastic is used for the plug, then manufacturing simplicity is maintained, but resistance to strain and elongation under pressure deteriorates
Solution Approach 1:
The plug uses composite materials combining plastic with embedded reinforcement elements that resist strain and elongation. The reinforcement elements are strategically positioned to counteract the strain caused by CO2 pressure, maintaining manufacturing simplicity while significantly improving strength.
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 reliability and longevity of the ablation instrument by maintaining the structural integrity of the plug under high CO2 pressure, allowing for extended operation without fit issues or fractures, ensuring effective tissue treatment through consistent gas supply and electrical contact.
Implementation Method 1
the pin consists of a fiber-reinforced thermoplastic plastic, wherein particularly polycarbonate (PC), polyamide (PA), polybutylene polybutyterephthalate (PBT) or also polyimide (PI) can be considered as plastic. These plastics are preferably reinforced by short fibers embedded in the plastic
Implementation Method 2
a fluid line originating from the plug extends through the lumen of the hose... for which purpose a fluid line originating from the plug extends through the lumen of the hose
Data Source
AI summary
An ablation instrument having a fiber-reinforced thermoplastic plastic pin as well as a seat for s fluid line and a connection surface for the gas junction. The ablation instrument is particularly appropriate as single-use instrument as it is primarily made of plastic.