Vascular Access Device with Integrated Holding Bracket
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current vascular access devices for inserting catheters or sheaths into blood vessels lack ease and safety of use, as per the preferences of physicians and healthcare providers.
Innovation Solution
An access device comprising a needle, dilator, sheath, and holding bracket, where the needle has a fenestration for fluid flow and the dilator and sheath are coaxially mounted, allowing for secure positioning and easy release mechanisms to facilitate safe and efficient insertion and removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional Seldinger technique is used with separate components, then the device can be assembled step-by-step, but the ease and safety of use is insufficient
Solution Approach 1:
The patent combines the needle, dilator, and sheath into a single pre-assembled unit with a common hub structure, eliminating the need for separate assembly steps and reducing the risk of improper configuration. This integrated design directly improves ease and safety of use while maintaining manageable device complexity through modular construction.
Solution Approach 2:
The needle, dilator, and sheath are pre-assembled and pre-configured in the correct sequence before use, with the dilator pre-loaded onto the needle and the sheath pre-loaded onto the dilator. This preliminary preparation eliminates assembly errors and improves safety during the actual procedure.
2Reliability
If the needle, dilator, and sheath are separately handled, then each component can be optimized independently, but the risk of accidental needle sticks increases
Solution Approach 1:
By combining all components into a single integrated unit with a common hub, the invention eliminates the need to handle multiple separate sharp components, thereby reducing the risk of accidental needle sticks while maintaining the functional advantages of each individual component.
Solution Approach 2:
The needle is nested within the dilator, which is nested within the sheath, forming a telescopic structure. This nesting arrangement keeps the needle protected and retracted during storage and transport, significantly reducing the risk of accidental needle sticks while allowing easy deployment when needed.
3Ease of operation
If the dilator and sheath are inserted through tissue, then vascular access is achieved, but the procedural control is reduced
Solution Approach 1:
The dilator and sheath are pre-loaded onto the needle in the correct configuration before insertion. This preliminary setup allows the operator to maintain precise control over the entire assembly during tissue penetration, ensuring proper alignment and reducing the risk of improper positioning that could compromise procedural control or increase tissue trauma.
Data Source
Figure 1A
Figure 1B
Figure 2A~2B
AI summary
An access device for placing a medical article within a body space includes a needle, a dilator, and a sheath. The needle can include an elongated needle body and a hub from which the needle body extends. The dilator can be slideably disposed on the needle body and include a dilator hub and an elongated dilator shaft that extends from the dilator hub. The sheath can include a tubular sheath body, and a sheath hub. The tubular body can be disposed on the dilator. The needle, dilator, and sheath can be held together by a disposable bracket engaged with the needle and the sheath.