Guidewire tip

Jump to navigation Jump to search

WikiDoc Resources for Guidewire tip

Articles

Most recent articles on Guidewire tip

Most cited articles on Guidewire tip

Review articles on Guidewire tip

Articles on Guidewire tip in N Eng J Med, Lancet, BMJ

Media

Powerpoint slides on Guidewire tip

Images of Guidewire tip

Photos of Guidewire tip

Podcasts & MP3s on Guidewire tip

Videos on Guidewire tip

Evidence Based Medicine

Cochrane Collaboration on Guidewire tip

Bandolier on Guidewire tip

TRIP on Guidewire tip

Clinical Trials

Ongoing Trials on Guidewire tip at Clinical Trials.gov

Trial results on Guidewire tip

Clinical Trials on Guidewire tip at Google

Guidelines / Policies / Govt

US National Guidelines Clearinghouse on Guidewire tip

NICE Guidance on Guidewire tip

NHS PRODIGY Guidance

FDA on Guidewire tip

CDC on Guidewire tip

Books

Books on Guidewire tip

News

Guidewire tip in the news

Be alerted to news on Guidewire tip

News trends on Guidewire tip

Commentary

Blogs on Guidewire tip

Definitions

Definitions of Guidewire tip

Patient Resources / Community

Patient resources on Guidewire tip

Discussion groups on Guidewire tip

Patient Handouts on Guidewire tip

Directions to Hospitals Treating Guidewire tip

Risk calculators and risk factors for Guidewire tip

Healthcare Provider Resources

Symptoms of Guidewire tip

Causes & Risk Factors for Guidewire tip

Diagnostic studies for Guidewire tip

Treatment of Guidewire tip

Continuing Medical Education (CME)

CME Programs on Guidewire tip

International

Guidewire tip en Espanol

Guidewire tip en Francais

Business

Guidewire tip in the Marketplace

Patents on Guidewire tip

Experimental / Informatics

List of terms related to Guidewire tip

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Characterizing the Physical Characteristics of a Coronary Guidewire Using the Tip Load

One way of quantifying some of the physical features of a coronary guidewire is by using a strain gauge to measure the force needed to bend a wire when exerted on a straight guidewire tip, at a point 1 cm from the tip. Using this method, the tip loads in ascending order are (from less stiff to more stiff) 3 gm, 4.5 gm, 6 gm, 9 gm and 12 gm (ultra stiff). As stiffness increases the wire becomes prone to perforating the vessel.

Core To Tip Guidewires

When the core is extended to the tip, that increases pushability, precise steering, tip control and torquability. This can be a useful feature for eg. in probing chronic total occlusions.

With unibody wires there is more torquability, pushability and tactile feel. With two piece tip wires shaping is easy and the wire is likely to retain the shape “wire memory”

Shaping Ribbon

Incorporation of a shaping tip yields a softer tip that allows for shape retention.

Spring Coil Tip

1. Spring coil - Safer than hydrophilic coated or polymer tip wires - less risk of perforation

2. Distal weld

Spring Coils

  • Outer coils only

  • Tip coil only

link title

Tip Cover

  • Polymer or plastic
  • Provide lubricity
  • Smooth tracking through tortuosity

Polymer Tip (Cover)

Polymer instead of the spring coil with hydrophilic coating

Improved trackability with the compromise of reduced tactile feedback / feel

Eg: PT Graphix™ Intermediate Guide Wire, ChoICE PT wire

”Combination” Tips

  • Tip coils plus
  • Intermediate coils
  • Bare core
  • Plastic cover
  • Polymer
  • Polymer over tip coils

References

Template:WH Template:WS