Guide Wire Design Flashcards
Name 3 reasons why are guide wires important to the procedure?
A. Provides a stable platform for balloon advancement
B. Allows access to lesion
C. If you can not cross the lesion with the wire, you can not do the case
To make a guide wire more flexible, what would you do?
Make the core diameter smaller.
The larger the diameter is the less flexible it is.
To make a wire less likely to prolapse when going down a sidebranch, what would you do?
Longer tapers
Fewer, widely spaced tapers
contribute to a firmer, more supportive wire.
Hence broad gradual longer tapers is better.
What are two common core materials for a guide wire?
Stainless steel
Nitinol
What are the benefits of shorter tapers?
Greater flexibility
What are the downside of shorter tapers
greater tendency to prolapse
What is the softest kind of tip for a guide wire?
Shaping Ribbon.
Which of the following are types of guide wire covers?
Spring coils
Plastic sleeve
Lubricious polymer
What are the two types of guide wire coatings?
Hydrophilic - attracts water
Hydrophobic- Repels water
What are the properties of Hydrophilic in guide wires?
Attracts water
Applied over polymer and stainless steel, including tip coils
Thin, non-slippery solid when dry
Becomes gel when wet
Reduces friction
Increases trackability
What are the four situations for guide wires?
Facilitate delivery of interventional devices
Track through the vessel
Access and cross lesions
Support interventional devices for a variety of procedures
What are the six guide wire building blocks?
Core Diameter
Core Taper
Core Material
Tip Style
Coils and Covers
Coating
