Biopsy Partoff Tab Angle Adjustment for Tissue Retention
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Solution Overview
Problem
Current biopsy tools face challenges in efficiently acquiring and securing tissue samples, particularly in parting off the cored tissue sample from the tissue mass without causing additional trauma or losing the sample.
Innovation Solution
A tissue acquisition tool with a cutter tube and a partoff tab that can be adjusted in angle and configuration, allowing for spinning and radial extension to securely cut and collect multiple tissue samples with minimal trauma and loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a forward coring biopsy tool with a spinning cannula is used to core tissue samples, then tissue samples can be acquired, but the cored tissue sample must be manually parted off from the remaining tissue mass which increases procedure complexity and time
Solution Approach 1:
The patent combines the coring function and parting off function into a single integrated device. The parting off tab is integrated with the cannula structure, allowing the tissue sample to be automatically parted off from the remaining tissue mass during the same operation that the tissue was cored, eliminating the need for separate manual parting steps
Solution Approach 2:
The device performs the parting off action automatically through its mechanical design. The parting off tab, positioned at an angle relative to the cannula axis, automatically engages with the cored tissue sample as the cannula rotates and advances, self-performing the separation function without requiring additional manual intervention
2Adaptability or versatility
If the partoff tab is positioned at a fixed angle, then the structure is simple, but it cannot adapt to different tissue densities and sample sizes
Solution Approach 1:
The parting off tab is designed with adjustable positioning capability, allowing the angle and position of the tab to be dynamically modified during the procedure. This enables the tab to adapt to different tissue densities, sample sizes, and operator preferences while maintaining a relatively simple overall structure through controlled adjustability rather than complete complexity
3Reliability
If multiple tissue samples are obtained sequentially, then diagnostic accuracy improves, but the risk of losing samples or causing additional trauma increases
Solution Approach 1:
The parting off tab serves as an intermediary element between the cannula and the tissue sample. It provides a controlled separation interface that securely retains the cored tissue sample within the cannula while minimizing damage to the sample and surrounding tissue, preventing sample loss through the parting process
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
Enables efficient and secure acquisition of multiple tissue samples with reduced trauma and improved sample retention, allowing for sequential stacking within the cutter tube during a single insertion.
Implementation Method 1
The partoff tab may have a partoff tab first end and a partoff tab second end. The partoff tab can have a longitudinally expanded configuration and a longitudinally contracted configuration.
Data Source
AI summary
A biopsy device for acquiring a tissue sample is disclosed. The biopsy device comprises a tissue-engaging outer element, a handle and a trocar. Multiple tissue samples may be collected.