Biopsy Marker Delivery Device with Blocking Member
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing biopsy marker deployment devices face issues with premature marker deployment and excessive force required for deployment, which can lead to unintended marker exit during packaging and handling.
Innovation Solution
A biopsy marker deployer with a marker blocking member that prevents premature deployment by being releasably inserted within the cannula exit, allowing removal without activating the push rod, ensuring markers remain in place until deployment, thus reducing the force needed for marker release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a marker blocking member is inserted within the cannula exit to prevent premature deployment, then marker retention is improved, but the force required to deploy the marker increases
Solution Approach 1:
The blocking member is extracted from the cannula after use. The device allows the blocking member to be removed from the cannula without advancing the push rod, enabling the blocking member to be taken out separately while maintaining marker retention during storage and transport
Solution Approach 2:
The device is segmented into distinct functional components: the cannula, the blocking member, and the push rod. This segmentation allows the blocking member to be independently positioned within the cannula to prevent premature deployment, while also allowing it to be independently removed without affecting the push rod or requiring excessive force for marker deployment
2Device complexity
If existing marker deployment devices are used without a blocking member, then the device complexity is reduced, but premature marker deployment occurs during packaging and handling
Solution Approach 1:
The blocking member serves as an intermediary element between the marker and the external environment. It is inserted within the cannula exit to physically block the marker from premature deployment during packaging and handling, while being simple in structure and easy to implement
Data Source
AI summary
A biopsy marker delivery device are described. The delivery device can include a relatively flexible hollow tube, a pushing member such as a push rod disposed for sliding with the tube, and at least one marker disposed in the tube. A marker blocking member is disposed distal of the distal most marker, and is disposed at least partially within the hollow tube to assist in preventing premature deployment of a marker from the hollow tube. A portion of the blocking member may disposed in the hollow tube, and another portion of the member may be operatively associated with a portion of the package such that when the marker delivery device is removed from the package, the member is removed from the marker delivery device.