1. Guide Wire Torque Device for Vascular Intervention
Cody Fannin, Morgan Lennon, James Oosten, Samik Patel, Andrew Sassani, and Eric Zhang
Advisors: Dr. Rabih Chaer and Dr. Jason Wagner
Addressing the Problem
Previous Design
The Current Design
The Current Design
During vascular surgery, a wire is navigated through veins to a point of interest and is used as the access port for surgical tools. This wire is manually guided into position by a small device that allows the surgeon to direct the wire within the patient’s vascular network.
Current guide wire torque devices must travel the entire length of the wire several times throughout a procedure. This increases the risk of accidental movement of the wire, which can increase operation times and chances of patient injury.
Snap Fit
Allows device to clip on and off mid-wire
Difficult to unclip while gloved
Ease of Use
One-handed operation
Quick wire attachment and detachment
Simple to connect at any point along wire
Ribbed texture for superior grip
Innovative Slider Design
Sloped track to pinch wires of varying diameters
Slider rotated for quick wire insertion
Exposed groove easily guides wire into place
Existing Devices
Sliding Lock
Sloped track allows new slider to pinch wire at different points based on diameter
Internal extrusions give path for device to slide without falling off
(a)
(b)
(c)
Design Changes
Figure: Existing Devices used in Vascular Intervention
(a) Pin Vise (traditional), (b) H20 Torq TM, (c) SeaDragon TM
Snap-fit elimination
More effective locking mechanism
Simple one-hand-use design
Injection molding compatibility
Shortcomings:
All three devices must be fed through the distal end of the wire
No single device can use all wire sizes
Sustainability
Increases efficiency of vascular operations.
Reduces cost, supplies, and chance of accidental injuries.
Compatible with all standard guide wires making it less likely to reach the end of shelf life​
Injection-moldable design makes prototype cheap, easy, and sustainable for manufacturing.
Design Objectives
Ability to clip device on/off wire without threading through the wire’s distal end
Single-handed maneuverability
Easy translation of device up and down the wire
One device compatible for wire sizes: 0.014”, 0.018”, 0.035”
Future Goals
Finalize design details with physicians
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