Vascular Closure Locator With Nested Indicator Member
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Solution Overview
Problem
Existing devices for sealing punctures in blood vessels often face issues with premature retraction of closure devices and interference from indicator wires during the deployment of sealing elements, which can lead to incomplete sealing or damage to the sealing element.
Innovation Solution
A device with an elongate deployment member and an indicator member, where the indicator member extends through a lumen and is coupled to a second actuator to retract relative to the deployment member, providing a mechanism to prevent premature retraction and notify the operator of the indicator's position, ensuring accurate deployment of the sealing element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an indicator wire is used to locate the edge of the tract, then the operator can identify the correct position for sealing, but the indicator wire may interfere with the deployment of the sealing element
Solution Approach 1:
The device is divided into functionally independent modules: the indicator wire assembly and the sealing element assembly. The indicator wire can be retracted into its own lumen, separating it from the sealing element deployment path, thereby eliminating interference while maintaining position identification capability
Solution Approach 2:
The indicator wire is deployed first to locate and mark the correct position before the sealing element is deployed. The system provides visual feedback (blood flow indication) to confirm proper positioning, allowing the operator to verify placement before the sealing action occurs
2Ease of operation
If the closure delivering device is retracted to deploy the sealing element, then the sealing element is released into the tract, but premature retraction can occur leading to incomplete sealing
Solution Approach 1:
The device incorporates a feedback mechanism where the operator can observe blood flow through the indicator wire lumen to confirm proper positioning of the sealing element. This visual feedback ensures the sealing element is correctly placed before final deployment, preventing premature retraction and ensuring complete sealing
Solution Approach 2:
The indicator wire is nested within its own lumen in the deployment device, and the sealing element is nested within the deployment member. This nested structure allows both components to be delivered together through the same access sheath while maintaining their functional independence and preventing interference during deployment
Data Source
Figure 1
Figure 2A~2B
Figure 2C~2D
AI summary
The present invention is directed to a device (100) which is capable of both locating a punctured blood vessel wall and sealing the puncture in the vessel and to the method of using the device as well. In one embodiment, the device includes an elongate deployment member (7) having a sealing element (160) releasably disposed within a distal end thereof, said deployment member being coupled to a first actuator (8) configured to retract said deployment member relative to said sealing element, and an elongated indicator member (6) having a proximal end and a distal end, said indicator member extending through a lumen in said deployment member such that the distal end of said indicator member extends distally of the distal end of the deployment member, and said indicator member being coupled to a second actuator (2) configured to retract said indicator member relative to said deployment member.