Adjustable Ablation Device with Guiding Sleeve for Irregular Tumors
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing ablation devices face challenges in effectively ablating irregularly-shaped or larger volume tumors, often requiring multiple procedures and sacrificing normal tissue due to fixed specifications.
Innovation Solution
An adjustable ablation device featuring a first electrode, multiple second electrodes, and a guiding sleeve that allows for adjustable exposure and radial expansion, enabling precise ablation zone control and insertion into affected areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed specification ablation device is used, then the device structure is simple, but it cannot effectively ablate irregularly-shaped or larger volume tumors and requires multiple procedures
Solution Approach 1:
The ablation device divides the electrode system into multiple segments: a first electrode for initial ablation and multiple second electrodes for extended ablation. These segmented electrodes can be independently controlled to create customized ablation zones that adapt to irregular tumor shapes without requiring multiple separate procedures.
Solution Approach 2:
The device incorporates a movable guiding sleeve that can slide along the first electrode to expose or cover the second electrodes dynamically. This dynamic adjustment mechanism allows the ablation zone to be customized in real-time based on tumor characteristics, enabling single-procedure treatment of irregularly-shaped tumors while maintaining a relatively simple overall device structure.
2Reliability
If multiple ablation procedures are performed to completely ablate the tumor, then the tumor can be completely treated, but it takes more time and sacrifices normal cell tissue around the treatment area
Solution Approach 1:
The segmented electrode design with multiple second electrodes arranged around the first electrode enables the creation of an extended ablation zone that can completely encompass irregularly-shaped tumors in a single procedure, eliminating the need for multiple repeated ablations and reducing total procedure time.
Solution Approach 2:
The dynamic guiding sleeve mechanism allows precise control over which second electrodes are exposed and to what extent, enabling the ablation zone to be precisely tailored to match the tumor boundaries. This precision ensures complete tumor ablation while minimizing exposure time and protecting surrounding normal tissue.
3Reliability
If multiple ablation procedures are performed, then the tumor can be completely ablated, but normal cell tissue around the treatment area is sacrificed
Solution Approach 1:
The movable guiding sleeve provides dynamic control over the exposure of second electrodes, allowing the ablation zone to be precisely adjusted to match the tumor boundaries. This precise control enables complete tumor ablation while minimizing the ablation zone extension into surrounding normal tissue, thereby reducing collateral damage.
Solution Approach 2:
The device enables different ablation intensities and zones for different regions: the first electrode provides central ablation while the selectively exposed second electrodes provide peripheral ablation. This localized control allows complete tumor coverage while preserving surrounding normal tissue by adjusting which second electrodes are exposed based on the specific tumor geometry.
4Adaptability or versatility
If the ablation zone is fixed, then the device is simple to operate, but it cannot adapt to tumors of different shapes and sizes
Solution Approach 1:
The guiding sleeve can be simply slid along the first electrode to expose or cover the second electrodes, providing an intuitive and easy-to-operate mechanism for adjusting the ablation zone. This dynamic adjustment allows the device to adapt to tumors of different shapes and sizes while maintaining operational simplicity through a single sliding motion rather than complex controls.
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 device allows for convenient and effective ablation of irregularly-shaped tumors by adjusting the ablation zone and facilitating insertion, reducing the need for multiple procedures and minimizing damage to normal tissue.
Implementation Method 1
The guiding sleeve is adapted to move along an axial direction of the first electrode, so as to adjust a length of the first electrode exposed by the guiding sleeve and enable the second electrode to be released and expand along a radial direction of the first electrode
Implementation Method 2
a conductive area of the ablation device emits the radio frequency waves, and due to ionic agitation, tissue around the radio frequency waves generates heat such that the temperature in the treatment area starts to rise up
Implementation Method 3
due to ionic agitation, tissue around the radio frequency waves generates heat
Implementation Method 4
The guiding sleeve is sleeved outside the first electrode and the second electrode, so as to fold the second electrode... enable the second electrode to be released and expand along a radial direction of the first electrode
Implementation Method 5
When the temperature of the treatment area reaches 45° C. or higher, the tissue in the treatment area, which includes tumors, causes the coagulation necrosis of local tissue
Data Source
AI summary
An ablation device including a first electrode, at least one second electrode and a guiding sleeve is provided. The guiding sleeve is sleeved outside the first electrode and the second electrode, so as to fold the second electrode. The guiding sleeve is adapted to move along an axial direction of the first electrode, so as to adjust a length of the first electrode exposed by the guiding sleeve and enable the second electrode to be released and expand in a radial direction of the first electrode.