Peripheral vascular procedures often traverse long, tortuous segments of anatomy, placing specific demands on guidewire support, trackability, and visibility. INVAMED's InWIRE peripheral guidewire is engineered around a nitinol core and hydrophilic coating combination intended to address these demands across a range of diagnostic and interventional peripheral procedures.
What Is the InWIRE Peripheral Guidewire?
The InWIRE hydrophilic guidewire integrates a nitinol core with a long-lasting hydrophilic coating, a combination intended to provide maneuverability, tracking performance, and radiopacity during a broad spectrum of diagnostic and interventional procedures. As part of INVAMED's broader InWIRE guidewire family, the peripheral variant is designed specifically for navigation through peripheral vascular anatomy.
Core and Coating Design
The nitinol core provides superelastic behavior, allowing the wire to flex through tortuous vessels and resist permanent kinking, a property particularly valuable in peripheral anatomy where vessels can curve significantly over long distances. The hydrophilic coating is a slick, long-lasting polyurethane surface layer designed to minimize friction and support smoother tracking as the wire is advanced and withdrawn.
Sizing and Configuration
InWIRE peripheral guidewires are available in the following specifications:
- Diameter: 0.035 inches or 0.038 inches
- Length: 150 cm, 180 cm, 260 cm, or 290 cm
- Tip configuration: Available in both straight and angled distal ends
- Radiopaque segment: The distal 2-3 cm portion of the tip is radiopaque, supporting fluoroscopic visualization during the procedure
This range of lengths is intended to accommodate both standard procedures and exchange-length requirements, where a longer wire is needed to maintain access while catheters are exchanged over it.
Multiple Tip and Stiffness Options
InWIRE is offered in multiple tip configurations and shaft stiffness options, allowing operators to select a wire suited to specific vascular anatomy and procedural requirements. Straight tips are often used for more direct navigation, while angled tips can assist with engaging branch vessels or navigating curves.
Clinical Applications
InWIRE peripheral guidewires are intended to support diagnostic and interventional procedures throughout the peripheral vascular system, including navigation for catheter and device delivery in arterial and venous anatomy outside the coronary and neurovascular territories. As with all guidewire systems, appropriate selection depends on the specific vessel, procedure, and the clinical judgment of the treating physician, and use is intended for trained healthcare professionals.
Frequently Asked Questions
Why does InWIRE offer such a wide range of lengths?
Different procedures require different working lengths. Shorter wires may be sufficient for straightforward access, while longer exchange-length wires (such as 260 cm or 290 cm) are used when catheters need to be exchanged over the wire while it remains in place across the treatment area.
What does the radiopaque tip segment allow an operator to do?
The radiopaque distal segment allows the wire's position to be visualized under fluoroscopy, helping the operator confirm the tip location relative to the target anatomy throughout the procedure.
How does a nitinol core compare to a stainless steel core for peripheral use?
Nitinol cores are valued for their superelastic, kink-resistant properties in tortuous peripheral anatomy, while stainless steel cores are often associated with strong torque transmission. Selection depends on the specific anatomical and procedural demands.
Related INVAMED Resources
- Comprehensive Catheter & Guidewire Systems
- Peripheral Arterial Disease (PAD)
- Request Information from INVAMED
Medical Disclaimer: This article is provided for general informational and educational purposes only and does not constitute medical advice, diagnosis, or treatment recommendation. It is not a substitute for consultation with a qualified healthcare professional. Product indications, availability, and regulatory status vary by country. Always refer to the official Instructions for Use (IFU) and consult a licensed physician for guidance specific to your situation. INVAMED devices are intended for use by trained healthcare professionals.