Biopsy Cannula with Automatic Parameter Adjustment
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Solution Overview
Problem
Current breast biopsy procedures require time-consuming adjustments of needle sets with standard apertures and stroke lengths, leading to increased patient discomfort due to prolonged breast compression.
Innovation Solution
A biopsy system with a support structure and an elongate cannula, featuring an introducer that can be switched between standard and petite configurations without removal, allowing for automatic adjustment of the tissue receiving aperture and stroke length based on sensor detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a standard aperture and stroke length are used for biopsy, then the biopsy device can accommodate most breast sizes, but the procedure time increases and patient discomfort increases due to prolonged breast compression
Solution Approach 1:
The biopsy device incorporates adjustable aperture and stroke length parameters that can be dynamically modified based on the compressed breast dimensions. The system allows real-time adjustment of these parameters during the biopsy procedure to match the specific requirements of each patient's breast size, thereby reducing unnecessary compression time while maintaining versatility across different breast sizes.
Solution Approach 2:
The invention enables changing the aperture size and stroke length parameters according to the measured compressed breast dimensions. By adjusting these parameters (e.g., reducing aperture from standard to petite size and corresponding stroke length), the system optimizes the biopsy procedure for each patient's specific anatomy, reducing overall procedure time while maintaining adaptability.
2Ease of operation
If a smaller aperture is used to fit compressed breasts, then the biopsy device fits better and reduces compression time, but the stroke length must also be reduced which affects the cutting capability
Solution Approach 1:
The system dynamically adjusts both aperture size and stroke length as paired parameters. When a smaller aperture is selected to accommodate a compressed breast, the stroke length is automatically reduced to match, ensuring that the cutting blade travels the appropriate distance for the smaller aperture while maintaining effective tissue sampling capability.
Solution Approach 2:
The invention implements coordinated parameter changes where aperture size and stroke length are adjusted together. The controller receives input about compressed breast dimensions and automatically modifies both parameters to maintain optimal biopsy performance for the specific breast size, ensuring that reducing aperture for better fit does not compromise cutting effectiveness.
3Adaptability or versatility
If the aperture and stroke length are adjusted manually, then the biopsy device can be adapted to different breast sizes, but the setup time increases and procedure complexity increases
Solution Approach 1:
The biopsy device incorporates automated parameter adjustment capabilities where the system self-configures aperture size and stroke length based on input data about compressed breast dimensions. The controller automatically selects and adjusts the appropriate parameters without requiring manual intervention from the operator, thereby maintaining adaptability while reducing setup complexity and time.
Solution Approach 2:
The invention replaces manual mechanical adjustment mechanisms with an automated electronic control system. Instead of requiring operators to manually adjust aperture and stroke length settings, the system uses electronic sensors and controllers to automatically determine and set the appropriate parameters based on measured breast dimensions, simplifying the setup procedure while maintaining full adaptability.
Data Source
AI summary
A biopsy system includes an elongate cannula coupled to and extending from a support structure, the cannula having a distal portion with a tissue receiving aperture in a side wall thereof, and an elongate hollow introducer sized and configured to be mounted to the support structure over the cannula. The support structure and a proximal portion of the introducer are respectively configured for providing releasable attachment of the introducer to the support structure over the cannula in a first attachment configuration, in which the distal portion of the cannula extends out an open distal end of the introducer with the tissue receiving aperture unobscured by the introducer, and in a second attachment configuration, in which the distal portion of the cannula extends out the open distal end of the introducer with the tissue receiving aperture partially obscured by the introducer.