Asymmetric Probe Delivery Device With Shield Sleeve
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Solution Overview
Problem
Existing probe delivery devices face challenges in advancing asymmetric probes into IV catheters without getting caught on obstructions such as metal wedges or other anatomical features within the catheter assembly.
Innovation Solution
A probe delivery device featuring a shield assembly and a probe assembly, where the shield sleeve moves relative to the outer housing to prevent the probe from getting caught, and the probe can be advanced and rotated to reposition the catheter tip effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an asymmetric probe with a V-shaped tip is used to reposition the catheter tip, then the effectiveness of catheter repositioning is improved, but the probe becomes susceptible to getting caught on obstructions such as metal wedges or other anatomical features
Solution Approach 1:
A delivery device is introduced as an intermediary system that facilitates the advancement of the asymmetric probe into the catheter. The delivery device includes a housing with a bore that guides the probe, a pusher member that advances the probe, and a release mechanism that allows the probe to be deployed. This intermediary system protects the asymmetric probe during advancement and enables controlled deployment, resolving the contradiction between maintaining probe effectiveness and preventing entrapment on obstructions
2Productivity
If the probe geometry is designed with a V-shaped tip to move the catheter tip away from the vein wall, then the blood draw success is improved, but the probe is more likely to get caught on obstructions in the catheter assembly
Solution Approach 1:
The delivery device performs preliminary actions by pre-positioning and guiding the asymmetric probe before it enters the catheter. The housing bore aligns the probe, the pusher member pre-advances it to a controlled position, and the release mechanism prepares for precise deployment. This preliminary preparation ensures the V-shaped tip maintains its blood draw effectiveness while preventing premature contact with obstructions that would cause entrapment
Data Source
AI summary
Provided herein is a probe delivery device for advancing a probe into a vascular access device. The probe delivery device includes an outer housing, a connector, a shield assembly, and a probe assembly. The shield assembly includes a shield sleeve movable within an inner volume of the housing and a shield advancer coupled to the proximal end of the shield sleeve, the shield advancer having a shield handle configured to slide along an outer surface of the housing to move the shield sleeve distally from a first sleeve position to a second sleeve position. The probe assembly includes a probe movable within the shield sleeve and a probe advancer coupled to the proximal end of the probe, the probe advancer having a probe handle configured to slide along an outer surface of the housing to move the probe distally from a first probe position to a second probe position.