Endoscopic Forceps Electrode Mechanism for Compact Design
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Solution Overview
Problem
Conventional endoscopic forceps have a complex configuration with a large number of components, making them difficult to apply in endoscopic procedures.
Innovation Solution
The design features a pair of electrodes, including a movable blade electrode and a fixed blade electrode, connected via a coaxial cable with a pivot point, allowing for sliding motion and high-frequency wave application between the electrodes to simplify the configuration and reduce diameter, enabling effective tissue manipulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional medical treatment instrument configuration is used, then the functional requirements for tissue coagulation and shearing can be met, but the number of components becomes large and the configuration becomes complicated
Solution Approach 1:
The patent combines multiple functions (coagulation, shearing, tissue manipulation) into a single integrated forceps structure. The first electrode and second electrode are integrated into the forceps jaws, eliminating the need for separate treatment instruments. The turning mechanism is integrated within the forceps body, reducing the number of external components while maintaining all necessary functions.
Solution Approach 2:
The forceps structure serves multiple purposes: it acts as both a gripping tool and a microwave treatment device. The first electrode can be turned to either sandwich tissue for coagulation or contact the second electrode for shearing. This multi-functionality eliminates the need for separate instruments for different surgical tasks, reducing overall system complexity.
2Reliability
If a conventional medical treatment instrument configuration is used, then the required treatment functions can be achieved, but the diameter becomes large making it difficult to apply to endoscopic forceps
Solution Approach 1:
The patent employs a nested structure where the first electrode is positioned within the space defined by the second electrode and the forceps body. The turning mechanism is nested within the forceps jaw structure. This nesting allows the treatment functions to be achieved within a compact diameter suitable for endoscopic application.
Solution Approach 2:
The patent uses a turning mechanism that operates in a rotational dimension rather than requiring linear displacement. The first electrode rotates about a turning axis to achieve tissue sandwiching or contact, allowing functional capability to be achieved within a compact radial space rather than requiring extended linear dimensions.
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 configuration reduces the number of components, allowing for a simpler and more compact endoscopic forceps that can be used in various surgical operations, including endoscopic, celioscopic, and direct vision surgeries, with functions such as gripping, cutting, and coagulation.
Implementation Method 1
a high frequency wave can be applied between the movable blade electrode and the fixed blade electrode via the external electric conductor and the center electric conductor of the coaxial cable
Implementation Method 2
the coaxial cable is slid with respect to the sheath conduit so that parallel moving added to the coaxial cable is transmitted to the movable blade electrode as turnable moving about the pivot point via the force application point of the movable blade electrode to open and close the movable blade electrode and the fixed blade electrode
Data Source
AI summary
An endoscopic forceps is provided. A movable blade electrode and a fixed blade electrode form a pair of electrodes. The fixed blade electrode is electrically contacted onto an external electric conductor of a coaxial cable in the sheath conduit. A force application point of the movable blade electrode is connected to a center electric conductor of the coaxial cable. A pivot point of the movable blade electrode is provided on the movable blade electrode. The coaxial cable is slid with respect to the sheath conduit so that parallel moving added to the coaxial cable is transmitted to the movable blade electrode as turnable moving about the pivot point via the force application point of the movable blade electrode. A high frequency wave can be applied between the movable blade electrode and the fixed blade electrode via the external electric conductor and the center electric conductor of the coaxial cable.