Reduced Profile Biopsy Device Handle Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current biopsy devices have wings that extend from the handpiece, which interfere with the approach angle to the tissue of interest, limiting the range of angles available for sample collection and potentially resulting in insufficient or incorrect tissue samples.
Innovation Solution
A reduced profile biopsy device design featuring a housing with a removable handle that modifies the device from a loading configuration to a delivery configuration, allowing for a greater range of approach angles by reducing the overall profile, enabling more precise and effective tissue sampling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wings are extended from the handpiece to allow grasping and loading the actuating apparatus, then ease of operation is improved, but the approach angle to the tissue of interest is interfered with, limiting the range of angles available for sample collection
Solution Approach 1:
The device is divided into separate functional components: the handpiece containing the actuating apparatus, the stylet, and the cannula. The stylet can be loaded into the handpiece through a loading mechanism that does not require extended wings, allowing the handpiece to be compact during delivery while still enabling easy loading of the stylet and cannula assembly for actuation.
Solution Approach 2:
The handpiece is designed with a dynamic configuration where the stylet and cannula can be independently actuated through a trigger mechanism. The stylet can be advanced or retracted relative to the cannula, and the cannula can be advanced or retracted relative to the handpiece, allowing the device to adapt to different tissue depths and angles without requiring extended wings.
2Adaptability or versatility
If the biopsy device uses a compact handpiece design to reduce profile, then the range of approach angles is improved, but the ease of loading the actuating apparatus may be compromised
Solution Approach 1:
The stylet and cannula are pre-assembled as a unit that can be loaded into the handpiece through a dedicated loading port. The loading mechanism is designed to accept the stylet-cannula assembly in a pre-configured state, allowing the actuating apparatus to be loaded without requiring the user to manipulate separate components or extend wings beyond the compact handpiece structure.
3Adaptability or versatility
If the device maintains a reduced profile during delivery, then interference with tissue approach is minimized, but the complexity of the loading mechanism may increase
Solution Approach 1:
The stylet and cannula are merged into a single actuating assembly that is loaded and actuated together. The loading mechanism combines the insertion of both components into one unified action, reducing the number of separate loading steps and simplifying the overall mechanism while maintaining a compact handpiece profile for delivery.
Data Source
Figure 1~1D
Figure 2~4
Figure 5~6
AI summary
A biopsy device is disclosed that includes a housing maintaining a stylet and a cannula. A control device is operably coupled to operate the stylet and the cannula. A handle operates to modify the device from a loading configuration with an expanded profile to a delivery configuration with a reduced profile.