Ablation Catheter Kill Switch for Immediate Therapy Termination
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Solution Overview
Problem
Current ablation systems for treating cardiac arrhythmias, such as atrial fibrillation, lack a reliable and immediate mechanism to terminate energy delivery, risking complications like heart block or cardiac tamponade due to delays in shutting off ablation therapy, and existing medical devices are not designed for the specific demands of a catheterization laboratory setting.
Innovation Solution
A steerable ablation catheter system with a 'kill switch' mechanism that allows immediate and abrupt termination of ablation therapy, located ergonomically on the catheter handle or within the cable, enabling direct and manual control by the operator to prevent inadvertent damage, incorporating pressure sensors and shock-absorbing materials to minimize tissue damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional ablation system without immediate termination capability is used, then the procedure can be performed with standard equipment, but the response time to terminate ablation therapy is delayed causing potential tissue damage
Solution Approach 1:
The kill switch is pre-positioned on the catheter handle within easy reach of the operator, allowing immediate termination of ablation therapy without needing to locate or activate controls on distant equipment. This preliminary positioning of the control mechanism eliminates delays in emergency response.
Solution Approach 2:
The kill switch acts as an intermediary control mechanism that directly interrupts the ablation therapy delivery system. By placing this intermediary control on the catheter handle itself, the system enables rapid termination independent of the main ablation generator controls.
2Reliability
If the ablation generator is placed within easy reach of the operator, then the operator can quickly terminate therapy, but it disrupts lab staff and operations
Solution Approach 1:
The termination control function is extracted from the main ablation generator and integrated directly into the catheter handle. This allows the operator to terminate therapy using the catheter handle controls without needing to access or move toward the ablation generator, thus maintaining smooth laboratory operations while ensuring rapid response capability.
3Ease of operation
If foot control is used to terminate ablation therapy, then the operator's hands are free for other tasks, but accidental activation or difficulty in control occurs
Solution Approach 1:
The catheter handle control allows the operator to terminate ablation therapy using the same hand that is manipulating the catheter, creating a self-service control system. This eliminates the need for separate foot controls while maintaining precise intentional activation, as the control is naturally integrated into the operator's existing catheter manipulation workflow.
Data Source
AI summary
A medical system for delivering treatment or therapy to a patient has a kill switch for interrupting the delivery. The kill switch, which can disrupt the delivery directly or can cause an error message to be generated that disrupts the delivery, can be activated by the operator or remotely. In an ablation catheter system, a kill switch mechanism immediately and abruptly terminates delivery of ablation treatment or therapy.