Microwave Tissue Ablation Antenna Tip Reinforcement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing microwave devices for tissue ablation face issues with the mechanical stability of the penetrating tip, which can detach from the antenna under mechanical stress during insertion and extraction, posing risks and complications.
Innovation Solution
A microwave device with a reinforcing element and a bushing system that provides a threaded connection between the penetrating tip and the antenna, enhancing mechanical resistance without compromising the antenna's operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a penetrating tip is connected to the antenna body, then the antenna can be introduced into tissues, but the penetrating tip may detach under mechanical stress during insertion and extraction
Solution Approach 1:
The connection between the penetrating tip and antenna body is achieved through a composite structure combining a reinforcing element (ceramic or metal) with a threaded connection mechanism. This composite approach provides both mechanical strength and secure attachment, preventing detachment under stress while maintaining ease of insertion.
Solution Approach 2:
The penetrating tip is designed with a curved or angled configuration that facilitates smooth introduction into tissues while the threaded connection provides mechanical stability. The curved geometry reduces resistance during insertion, while the threaded mechanism ensures the tip remains attached under the mechanical stresses of the procedure.
2Reliability
If the penetrating tip is made with high mechanical strength, then detachment is prevented, but the complexity of the connection structure increases
Solution Approach 1:
The connection structure is segmented into distinct components: a reinforcing element and a threaded connection mechanism. This segmentation allows each component to be optimized independently - the reinforcing element provides mechanical strength while the threaded mechanism provides secure attachment - without unnecessarily increasing overall device complexity.
Solution Approach 2:
High mechanical strength properties are localized specifically to the penetrating tip and its connection elements, rather than requiring the entire antenna structure to be overly complex. The reinforcing element and threaded connection are concentrated only where mechanical stress occurs, maintaining simplicity in the rest of the device.
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 significantly increases the mechanical resistance of the penetrating tip, preventing detachment during procedures and ensuring safe and effective tissue ablation.
Implementation Method 1
The forms of energy that are commonly used for thermoablation comprise mechanical waves, radiofrequency currents, infrared radiations, microwaves.
Implementation Method 2
One of the most promising forms of energy for thermoablation is currently microwave energy
Implementation Method 3
The presence of a cooling circuit of the supply line enables heat to be removed and thus enables the eccentricity of the necrosis to be reduced.
Implementation Method 4
a reinforcing element connected to a distal end of the cannula, and the penetrating tip being connected to a distal end of the reinforcing element
Data Source
AI summary
An antenna for a microwave device for tissue ablation includes a metal cannula inside which there are arranged an external conductor and an internal conductor of the antenna, between which a layer of electrically insulating material is interposed, and a penetrating tip connected to the antenna. The antenna further includes a reinforcing element connected to a distal end of the cannula, the penetrating tip being connected to a distal end of the reinforcing element.