Tetherless Biopsy Device Segmentation and Automation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current biopsy devices lack an efficient and user-friendly mechanism for obtaining and storing tissue samples, particularly in a single-handed operation with minimal setup, and often require tethering for functionality.
Innovation Solution
A biopsy device comprising a separable probe and holster with a needle and tissue sample holder, powered by a rechargeable battery, utilizing a motor-activated cutter and vacuum system for sample collection and storage, allowing single-handed operation with pneumatically assisted sample deposition and retrieval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If biopsy devices are tethered to vacuum modules and control modules for fluid communication and power, then functional capability is improved, but device complexity and ease of operation deteriorate
Solution Approach 1:
The device is divided into separable components: a disposable probe assembly containing the needle and sample collection mechanism, and a reusable handle assembly containing the motor, battery, and control electronics. This segmentation allows the complex powered components to be separated from the sterile disposable portion, improving both functionality and ease of use.
Solution Approach 2:
The device incorporates an integrated rechargeable battery and motor system within the handle assembly, enabling the device to be self-powered without external tethering. The motor automatically drives the cutter and vacuum pump, reducing the need for manual operation and external connections.
2Ease of operation
If biopsy devices require multiple hands for operation and setup, then operational control is improved, but ease of operation deteriorates
Solution Approach 1:
Multiple functions are merged into the reusable handle assembly: the rechargeable battery, motor, vacuum pump, and control electronics are integrated into a single unit. This consolidation allows all powered functions to be controlled from one location, enabling single-handed operation.
Solution Approach 2:
Manual mechanical operations are replaced with motorized automation. The motor automatically advances the needle, rotates the cutter, and controls the vacuum pump, eliminating the need for manual cranking or adjustment mechanisms that would require multiple hands.
3Reliability
If biopsy devices use disposable entire-device approach, then reliability and sterility are improved, but loss of substance and cost deteriorate
Solution Approach 1:
The device is segmented into disposable and reusable portions. Only the probe assembly containing the needle and sample collection chamber is disposable, while the expensive handle assembly with motor and electronics is reusable. This reduces material waste while maintaining sterility.
Solution Approach 2:
The reusable handle assembly is designed to be cleaned and sterilized for multiple uses after the disposable probe is removed. This allows recovery and reuse of the expensive powered components, reducing overall material consumption and cost.
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, single-handed acquisition and storage of multiple tissue samples with minimal setup, enhancing user convenience and operational efficiency while maintaining sample integrity.
Implementation Method 1
powered by a rechargeable battery
Implementation Method 2
motor-activated cutter
Implementation Method 3
vacuum system for sample collection
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A biopsy device comprising a needle, a cutter configured for translation relative to the needle, a first rotating member, a second rotating member, and a drive assembly operable to simultaneously rotate the first and second rotating members at different rotational speeds. The difference in rotational speeds of the first and second rotating members provides translation of the cutter relative to the needle.