Bipolar Ablation Probe Suction Stabilization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current cardiac ablation technologies face challenges in effectively delivering ablative energy to create transmural lesions, particularly in epicardial tissue, due to issues like the heat sink effect and formation of coagulum, which can impede the delivery of energy and result in incomplete or uneven tissue ablation.
Innovation Solution
The development of a minimally invasive surgical system that utilizes a bipolar ablation probe with suction mechanisms to ensure precise delivery of RF energy, incorporating temperature control and cooling features to prevent coagulum formation, and allowing for adjustable energy output to accommodate varying tissue thicknesses, while using either monopolar or bipolar modes to optimize lesion creation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If RF energy is applied to ablate tissue, then tissue coagulation and lesion formation occur, but heat sink effect and coagulum formation impede energy delivery resulting in incomplete or uneven ablation
Solution Approach 1:
The system applies suction to the tissue before and during RF energy delivery to pre-stabilize the tissue-probe interface. This preliminary action prevents tissue movement and coagulum formation that would otherwise impede consistent energy delivery throughout the ablation process
Solution Approach 2:
The patent introduces an intermediary fluid delivery system that provides cooling fluid between the probe and tissue during ablation. This intermediary layer prevents direct overheating, reduces coagulum formation, and maintains consistent thermal contact, thereby ensuring uniform energy delivery and lesion formation
2Productivity
If higher RF energy output is used to ensure complete ablation, then lesion depth increases, but collateral damage and heat sink effects worsen
Solution Approach 1:
The system dynamically adjusts RF energy delivery parameters based on real-time temperature feedback from sensors. By monitoring tissue temperature and modifying power output accordingly, the system achieves complete ablation at the target depth while preventing excessive heating and collateral damage to surrounding tissues
Solution Approach 2:
The patent incorporates temperature sensors that continuously monitor tissue temperature during ablation and feed this information back to the control system. This feedback mechanism enables real-time adjustment of RF energy delivery, ensuring complete lesion formation while preventing overheating and collateral thermal damage
3Productivity
If bipolar arrangement is used to position electrodes on opposite sides of body structure, then lesion creation capability improves, but device complexity and positioning difficulty increase
Solution Approach 1:
The probe design integrates multiple electrode configurations within a single device, allowing it to function in both bipolar and monopolar modes. This multi-functionality enables the system to adapt to different anatomical structures and procedural requirements without requiring separate specialized devices, thereby reducing overall system complexity
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 system enables the creation of consistent, full-thickness lesions with reduced collateral damage and heat sink effects, improving the efficacy of cardiac ablation procedures by ensuring precise energy delivery and maintaining tissue temperature within therapeutic ranges.
Implementation Method 1
The stabilizer mechanism includes a suction mechanism configured to deliver negative pressure to a portion of the tissue
Implementation Method 2
Electromagnetic radio frequency ('RF') energy applied by the electrode heats and eventually kills or ablates the tissue to form a lesion
Implementation Method 3
During the ablation of soft tissue, tissue coagulation occurs, which leads to tissue death
Implementation Method 4
incorporating temperature control and cooling features to prevent coagulum formation
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
Surgical systems and methods for administering an ablation treatment and other therapeutic or diagnostic protocols to a patient tissue involve a flexible stabilizer mechanism having an inner recess and an ablation mechanism coupled with the stabilizer mechanism.