Motor-Driven Electrosurgical Resection With Integrated Imaging Control
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Solution Overview
Problem
Existing electrosurgical cutting devices face challenges in visualizing and engaging target tissue, especially in minimally invasive procedures like TURBT and TURP, due to limited access and field of view, and manual control of cutter movement is difficult to coordinate with RF power and vacuum aspiration.
Innovation Solution
The invention employs motor-driven cutters with integrated LED illumination and digital controllers for enhanced tissue resection control, combined with a tissue trap for collecting debris and a fluid management system for efficient waste fluid filtration and collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual engagement of cutting window against target tissue is used, then the device structure remains simple, but tissue resection control and coordination with RF power and vacuum aspiration deteriorates
Solution Approach 1:
The patent combines multiple functions (cutting, RF power delivery, vacuum aspiration, and illumination) into an integrated electrosurgical system. The controller coordinates these functions simultaneously, allowing precise tissue resection while maintaining manageable device complexity through unified control architecture.
Solution Approach 2:
The patent replaces manual mechanical engagement of the cutting window with motorized actuation systems. The controller automates the coordination between mechanical cutting movements, RF power delivery, and vacuum aspiration, improving precision while using electronic control to manage complexity.
2Difficulty of detecting and measuring
If endoscope is used to observe urethra during introducer sheath advancement, then direct visualization is improved, but procedure time and system complexity increases
Solution Approach 1:
The patent integrates the endoscope and illumination sources directly into the electrosurgical system. This allows simultaneous visualization and tissue resection operations to occur together, eliminating separate setup times and reducing overall procedure time while providing continuous direct visualization.
Solution Approach 2:
The system performs preliminary visualization and positioning actions through the integrated endoscope before tissue resection begins. The controller prepares the coordinated system (cutting, RF, vacuum) in advance, allowing immediate transition to resection and reducing procedure time.
3Ease of operation
If manual reciprocation of cutter assembly is used, then device complexity remains low, but coordination with RF power and vacuum aspiration deteriorates
Solution Approach 1:
The patent replaces manual reciprocation with motorized actuation controlled by a digital controller. The controller electronically coordinates the timing and synchronization of cutter movement, RF power delivery, and vacuum aspiration, achieving precise coordination while using standard electronic control components to manage system complexity.
Solution Approach 2:
The controller allows dynamic adjustment of operational parameters (cutting speed, RF power levels, vacuum pressure) to optimize coordination between different functions. This flexible parameter control improves ease of operation while using programmable logic to manage the complexity of multi-function coordination.
4Productivity
If tissue collection device with filter is used, then histological analysis efficiency is improved, but device complexity and fluid flow resistance increases
Solution Approach 1:
The patent nests the tissue collection device and filter within the existing electrosurgical system architecture. The filter is integrated into the fluid pathway already present for vacuum aspiration, allowing tissue collection without requiring separate external collection systems, thus improving efficiency while minimizing additional complexity.
5Illumination intensity
If integrated LED illumination is added to shaft, then tissue visibility is improved, but device complexity and energy consumption increases
Solution Approach 1:
The patent merges LED illumination sources with the existing shaft structure of the electrosurgical device. The illumination is integrated into the same housing that contains other components, providing enhanced tissue visibility while using the existing structural framework to minimize additional complexity.
Solution Approach 2:
The shaft structure serves multiple functions: it houses the cutting electrode, provides structural support, and now also accommodates LED illumination sources. This multi-functionality improves visibility while avoiding the need for separate illumination devices, thereby limiting the increase in overall device 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
Improves tissue resection precision and visibility, allowing coordinated control of cutter movement, RF power, and vacuum aspiration, facilitating efficient tissue removal and rapid histological analysis.
Implementation Method 1
A filter member is provided in the collector vial to trap tissue particles
Implementation Method 2
vacuum assistance through a cutting window
Implementation Method 3
applying a vacuum to aspirate tissue fragments and debris
Implementation Method 4
one or more radio frequency (RF) cutting blades arranged to resect tissue
Data Source
AI summary
Apparatus for performing electrosurgical tissue resections, such as transurethral resection of the include motor-driven cutters which drive both a shaft of the cutter and a cutter electrode, either or selectively. The systems often include controllers which coordinate movements of the shaft, electrodes, and other external components. The apparatus may include integrated imaging and light illumination systems. The apparatus may include integrated tissue filter and collection traps.