Guidewire Feeder Assembly for Stable Ultrasound-Guided Central Lines
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Solution Overview
Problem
Conventional central line placement techniques, including ultrasound-guided methods, face challenges such as a prolonged learning curve, user dependency, and complications due to loss of visualization during guidewire insertion, especially when using the wire-in-needle technique.
Innovation Solution
A device called WINGUIDE, featuring a housing with a handgrip, stabilizer, and thumb ramps, allows for real-time visualization and stable guidewire advancement into blood vessels by integrating a guidewire feeder tip and needle assembly, ensuring continuous ultrasound guidance without losing needle position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the wire-in-needle technique is used to maintain continuous visualization, then placement accuracy is improved, but the difficulty of operation increases due to the complex hand coordination required
Solution Approach 1:
The device divides the needle assembly into separate functional components: a needle holder for stabilization and a guidewire holder for advancement. This segmentation allows the clinician to stabilize the needle while advancing the guidewire through a separate mechanism, reducing the coordination complexity of the traditional wire-in-needle technique while maintaining continuous ultrasound visualization.
Solution Approach 2:
The device introduces an intermediary mechanism - a wire guide or catheter - that facilitates the passage of the guidewire from the distal end to the proximal end. This intermediary structure simplifies the hand coordination required by providing a predetermined path and reducing the need for complex thumb-and-finger manipulation directly on the needle hub.
2Stability of the object's composition
If the needle hub is held firmly during guidewire advancement, then stability is improved, but the ease of operation deteriorates due to restricted hand positioning
Solution Approach 1:
The device separates the stabilization function from the advancement function. The needle holder component maintains firm grasp on the needle hub for stability, while the guidewire holder component enables advancement through a separate mechanism. This segmentation allows hand positioning and manipulation without compromising needle stability.
Solution Approach 2:
The device enables dynamic hand positioning by allowing the clinician to adjust their grip and hand angle during the procedure. The separate needle holder and guidewire holder components can be manipulated independently, providing dynamic adaptability in hand positioning while maintaining needle stability throughout the guidewire advancement process.
Data Source
Figure 1A~1B
Figure 1E
Figure 2A~2D
AI summary
Disclosed is a device for facilitating placement of a central line in a patient, said device comprising: a housing having proximal and distal ends and a central portion therebetween, said housing having an upper portion and a lower portion; a handgrip provided on a proximal end of the housing, said handgrip having at least one of a channel and a through hole extending from the proximal end to the central portion, wherein the channel or through hole is sized to receive a guidewire; a feeder tip receiver provided on a proximal end of the handgrip in communication with the channel or through hole in said handgrip; a stabilizer provided on a lower portion of said housing; a Luer slip tip provided on a distal end of the housing, said Luer slip tip having a mounting portion for attachment to a needle hub, said Luer slip tip having a lumen aligned with the channel or through hole in said handgrip.