Bipolar Surgical Resection Device Insulated Filament Loop
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Solution Overview
Problem
Existing bipolar surgical resection devices face inefficiencies due to incomplete loop closure and high energy dispersion, leading to ineffective tissue resection and risk of short circuits, as seen in devices with intertwined or uncovered filaments and double-channel tubular sheaths.
Innovation Solution
A bipolar device featuring insulated, flexible monofilament electrodes with distinct uncovered sections and a single-channel tubular sheath, allowing for complete loop closure and precise tissue resection while preventing short circuits, utilizing ceramic-based insulating materials and a Teflon tubular element with activation mechanisms for controlled loop opening and closing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the two electrically conductive filaments are uncovered and inserted in a double-channel tubular sheath, then the device structure is simplified, but the loop cannot close completely and energy disperses highly
Solution Approach 1:
The patent introduces an insulating sheath as an intermediary component that channels the electric discharge between the two conductive filaments. This sheath acts as a mediator that guides the electrical energy along the filaments while preventing energy dispersion, thus resolving the contradiction between structural simplicity and energy efficiency.
Solution Approach 2:
The patent employs a flexible insulating sheath that can conform to the filaments and maintain complete loop closure. This flexible shell structure allows the device to achieve both structural simplicity and effective energy containment by adapting to the filament configuration while preventing energy loss.
2Device complexity
If the two electrically conductive filaments are uncovered, then the device structure is simplified, but the risk of short circuit increases due to contact between filaments
Solution Approach 1:
The insulating sheath serves as a protective intermediary that prevents direct contact between the two conductive filaments. This mediator maintains electrical isolation while allowing the filaments to function effectively, thus resolving the contradiction between structural simplicity and safety reliability.
Solution Approach 2:
The flexible insulating sheath provides a protective barrier that prevents filament contact while maintaining device simplicity. This thin film structure effectively isolates the conductive filaments, reducing short circuit risk without adding significant structural complexity.
3Device complexity
If a double-channel tubular sheath is used to channel the filaments, then the structure is simplified, but the wall separating channels prevents complete loop closure
Solution Approach 1:
The patent extracts the separating wall from the tubular sheath structure, transitioning from a double-channel design to a single-channel design. This removal of the separating barrier allows the filaments to achieve complete loop closure while maintaining structural simplicity, resolving the contradiction between structural simplicity and closure precision.
Solution Approach 2:
Instead of using a double-channel sheath with a separating wall, the patent inverts the approach by using a single-channel sheath without separation. This inverted structure allows the filaments to close the loop completely while maintaining the benefits of a simplified tubular sheath design.
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 achieves efficient and precise tissue resection with reduced energy dispersion and minimized risk of short circuits, ensuring effective tissue cutting through controlled electric discharge between the insulated filaments.
Implementation Method 1
devices suitable for applying an electric discharge on the patient's body, the thermal effect of which causes a transformation of the cells of the tissue involved
Implementation Method 2
the thermal effect of which causes a transformation of the cells of the tissue involved which can vary depending on the temperature reached
Data Source
Figure 1~2
AI summary
A bipolar device (1) for the surgical resection of tissues, comprising two insulated and electrically conductive filaments (2, 3), which have a relative proximal extremity (2a, 3a) and a relative distal extremity (2b, 3b), where the distal extremities (2b, 3b) are connected together by means of insulating means (4) to define a loop (5) intended to accommodate the portion of tissue to be re- sectioned, where each of the filaments (2, 3) has a relative uncovered section (12, 13), of which a first section (12) and a second section (13), having a limited extension and suitable for acting as a positive electrode and a negative electrode respectively, in such a way that between them an electric discharge occurs for the resection of the tissue inserted inside the loop (5) and placed between the electrodes themselves, at least a tubular element (6) inside which both the filaments (2, 3) are inserted sliding, the loop (5) being suitable for opening and closing by effect of the sliding of the filaments inside the tubular element (6), connection means (7) for electrically connecting the filaments to a bipolar current source, where the first section (12) has an extension between 3 mm and 8mm and the second section (13) has an extension between 15mm and 25mm.