Impedance-Guided Biopsy Forceps for Tissue Identification
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Solution Overview
Problem
Medical systems for biopsy procedures face challenges in accurately identifying suspect tissue areas for collection due to limited knowledge beyond imaging, leading to a high number of negative samples.
Innovation Solution
Implementing in situ impedance analysis using electrodes integrated with biopsy forceps to measure tissue impedance, providing a user interface for determining whether to collect a tissue sample based on impedance measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If impedance analysis is implemented using integrated electrodes, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent combines the biopsy forceps and impedance measurement electrodes into a single integrated device. The electrodes are incorporated into the forceps structure, allowing simultaneous mechanical tissue sampling and electrical impedance measurement through the same instrument, thereby improving measurement precision while managing device complexity through functional integration.
2Productivity
If impedance-guided sampling is used, then productivity is improved by reducing negative samples, but device complexity increases
Solution Approach 1:
The system implements real-time impedance measurement and analysis feedback during the biopsy procedure. The electrodes continuously monitor tissue electrical properties, and the system provides immediate feedback to guide the operator in identifying suspect tissue areas, thereby improving biopsy efficiency by reducing negative samples while managing complexity through intelligent control algorithms.
3Measurement precision
If multiple configurations are added for impedance measurement, then measurement precision is improved, but ease of operation deteriorates
Solution Approach 1:
The forceps are designed with dynamic configurations that can transition between different jaw positions optimized for various measurement modes. The system automatically adjusts the jaw configuration based on the measurement requirements, providing precise impedance measurements while maintaining ease of operation through automated configuration management rather than manual adjustment.
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
Reduces the collection of non-diagnostic samples by ensuring only suspect tissue is collected, minimizing tissue damage and improving the efficiency of biopsy procedures.
Implementation Method 1
determine an impedance measurement of the portion of the tissue based on response signals received from the pair of electrodes
Data Source
AI summary
A medical device includes an end effector assembly at a distal end of the medical device. The assembly comprises a pair of jaw members, a pair of electrodes including first and second electrodes, and first and second conductive wires attached to the first and second electrodes, respectively. Each jaw member includes a jaw and a tang, the jaw being transitionable between open and closed configurations for respectively receiving and collecting a tissue portion as a sample. The first and second conductive wires extend to a proximal end of the medical device and are removably connectable to a computing device configured to generate and provide electrical signals to, and determine an impedance measurement of the tissue portion based on response signals received from, the pair of electrodes contacting the tissue portion, and generate and provide a user interface indicating whether to collect the tissue portion based on the impedance measurement.