Coiled Vascular Access Instrument Delivery for Catheter Blood Collection
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Solution Overview
Problem
Existing catheters face challenges such as thrombus formation, kinking, and prolonged dwell time leading to difficulties in blood withdrawal, requiring additional needle sticks, which are painful and costly.
Innovation Solution
A vascular access instrument delivery device with a compact coiled position that can extend to an outstretched position, facilitating blood collection and fluid delivery through a catheter without causing trauma, using a pre-filled syringe to advance the instrument, and incorporating a one-way valve to prevent backflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If a catheter is left inserted in the patient for a prolonged period of time, then the catheter can be used for extended duration, but the catheter or vein becomes more susceptible to narrowing, collapse, kinking, blockage, and adhering
Solution Approach 1:
The patent applies preliminary action by introducing a vascular access instrument through the catheter before the catheter becomes blocked or damaged. The instrument is advanced through the catheter lumen in advance to establish an alternative blood access pathway, ensuring that blood sampling can continue without removing the catheter. This prevents the catheter from needing to remain patent for indefinite periods.
2Productivity
If additional needle sticks are performed to access blood vessels, then blood samples can be obtained, but patient trauma and material costs increase
Solution Approach 1:
The patent uses an intermediary approach by introducing a vascular access instrument that serves as a mediator between the catheter and the blood sampling process. This instrument can be advanced through the catheter to access blood vessels without requiring additional external needle sticks. The intermediary instrument facilitates blood sampling while maintaining the integrity of the existing catheter placement.
3Ease of operation
If a vascular access instrument is advanced through a catheter, then blood collection is facilitated, but the instrument must be compact for delivery through the catheter lumen
Solution Approach 1:
The patent applies dynamics by designing the vascular access instrument with a transformable configuration. The instrument can be collapsed into a compact form for delivery through the catheter lumen, then expanded into an operational configuration once positioned. This dynamic transformation allows the instrument to satisfy both the space constraint of the catheter lumen and the functional requirements of blood collection.
Data Source
AI summary
An instrument delivery device to couple to a vascular access device. The instrument delivery device may include a housing, which may include a distal connector, a proximal connector, and a lumen extending through the distal connector and the proximal connector. The instrument delivery device may include a vascular access instrument, which may include a distal end and a proximal end. The vascular access instrument may be disposed within the lumen of the housing in a coiled position. The vascular access instrument may be configured to move from the coiled position to an uncoiled position and advance through the distal connector. The vascular access instrument may extend through the vascular access device into vasculature of a patient.