Transperineal Biopsy Guide Tower with Adjustable Introducer Holder
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The transrectal ultrasound-guided prostate biopsy has become increasingly dangerous due to multi-drug resistant bacteria, necessitating a safer alternative that maintains the advantages of ultrasound imaging for needle guidance, such as the transperineal approach, which requires a mechanical guidance device for consistent accuracy and safety, especially for single-operator procedures.
Innovation Solution
A needle guidance device that attaches to an ultrasound probe, featuring a guide base, a guide tower with multiple attachment positions, and an introducer holder that can be pivotally and rotationally adjusted to secure the needle at various angles and heights, allowing for precise placement and locking in position, facilitating both parallel and angular adjustments while maintaining alignment with the ultrasound probe.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a freehand technique is used for transrectal ultrasound-guided biopsy, then the operator has flexibility in needle placement, but the procedure requires an extra set of hands and lacks standardization for teaching and single-operator performance
Solution Approach 1:
A mechanical guidance device is introduced as an intermediary between the ultrasound probe and the biopsy needle. The guide tower attaches to the ultrasound probe and provides a structured framework with multiple attachment positions, allowing the needle to be guided through a standardized path without requiring a second operator's hands while maintaining flexibility in needle placement angles and depths
2Reliability
If antibiotic prophylaxis is used in transrectal biopsy, then infectious complications are reduced, but the procedure becomes increasingly dangerous due to multi-drug resistant bacteria
Solution Approach 1:
The transrectal approach is replaced with a transperineal approach, changing the anatomical path from rectal to perineal. This substitution eliminates the risk of introducing bacteria into the rectal cavity while maintaining ultrasound guidance capability through the perineal skin, thereby removing the need for antibiotic prophylaxis and eliminating infectious complications associated with multi-drug resistant bacteria
3Manufacturing precision
If a mechanical guidance device is implemented for transperineal biopsy, then consistent accuracy and standardization are achieved, but the device structure becomes more complex
Solution Approach 1:
The guidance device is segmented into distinct functional components: a guide base that attaches to the ultrasound probe, a guide tower with multiple attachment positions for needle orientation, and a needle holder for securing the biopsy needle. This segmentation allows each component to perform its specific function while maintaining overall structural simplicity and ease of assembly
Solution Approach 2:
The guide tower incorporates movable and adjustable elements that allow dynamic positioning of the needle holder at various angles and depths. The needle holder can be rotated and positioned at different attachment positions on the guide tower, enabling the system to adapt to different biopsy requirements while maintaining consistent accuracy through standardized mechanical guidance
Data Source
AI summary
A needle guidance device having a longitudinal axis includes a guide base configured to releasably attach to an ultrasound probe. The guide base includes a platform. A guide tower is fixedly coupled to the guide base. The guide tower extends distally from a distal end of the guide base along the longitudinal axis and extends perpendicularly with respect to the longitudinal axis from the platform. The guide tower includes a plurality of attachment positions. An introducer holder is removably and pivotably coupled to the guide tower at a first attachment position of the plurality of attachment positions.