Hook-Head Medical Device Release for Wire-Free Detachment
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Solution Overview
Problem
Existing medical device delivery systems face issues with damaged or forgotten release wires, leading to device migration and vessel damage, as well as additional procedural complications.
Innovation Solution
A medical device delivery apparatus with axially fixed hook elements on its head element, allowing the device to be released by withdrawing the delivery system without additional mechanical operations, eliminating the need for release wires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a release wire is used to prevent control loop retraction, then device attachment security is improved, but procedural complexity increases and reliability decreases due to potential wire damage or user error
Solution Approach 1:
The invention extracts and eliminates the release wire component from the delivery system. By using a control loop that passes through an eyelet in the bayonet connector, the system achieves secure attachment during delivery without requiring a separate release wire. The control loop itself serves the dual function of both attachment and release mechanisms, simplifying the overall system while maintaining reliability.
Solution Approach 2:
The control loop is designed to perform multiple functions: it provides secure attachment during delivery by passing through the eyelet, and enables automatic release when the bayonet connector is disconnected. This multi-functional design eliminates the need for separate release wire and manual release operations, reducing procedural complexity while maintaining attachment security.
2Reliability
If a release wire is used to secure the control loop, then device attachment is improved, but time consumption increases due to additional removal steps
Solution Approach 1:
The control loop is pre-configured to pass through the eyelet of the bayonet connector during assembly. This preliminary configuration ensures that when the bayonet connector is disconnected from the delivery system, the control loop automatically releases the medical device without requiring any additional time-consuming removal steps. The release action is built into the disconnect mechanism itself.
Solution Approach 2:
The invention merges the attachment and release functions into a single integrated mechanism. The control loop serves both to secure the device during delivery and to enable automatic release upon connector disconnection. This consolidation eliminates the need for separate wire removal steps, significantly reducing procedural time while maintaining secure attachment during the delivery phase.
3Measurement precision
If additional mechanical operations are required for device release, then control precision is improved, but ease of operation deteriorates
Solution Approach 1:
The system is designed to perform the release action automatically through the natural disconnection of the bayonet connector. When the connector is disconnected, the control loop automatically releases from the eyelet, freeing the medical device without requiring any additional manual operations. This self-service mechanism maintains precise control over the release timing while dramatically improving ease of operation.
Data Source
AI summary
The present invention concerns a medical device delivery apparatus, the apparatus comprising: a head element (11) at a proximal end of the apparatus, the head being configured for extending through the medical device and projecting proximally therefrom; the head element having one or more hook elements (13) for engaging a control loop coupled to the medical device, wherein the one or more hook elements are axially fixed in relation to the head element.