This article compares two approaches side by side to clarify how they differ in principle and practice. Device characteristics such as diameter, length, tip shape, coating, and support are matched to the anatomy and task, and are selected by the treating clinician. As a medical device manufacturer, INVAMED develops technologies in this area; the information here is educational and not medical advice.
Background: Endovascular, Neurovascular and Urological Access and Delivery
A guidewire is a thin, steerable wire that a clinician advances first to establish a path, over which catheters and other devices are then delivered. These tools are applied across endovascular, neurovascular, and urological interventions, from crossing coronary and peripheral lesions to accessing the urinary tract. INVAMED offers a comprehensive catheter and guidewire portfolio spanning sheaths, guidewires, guiding and support catheters, microcatheters, and retrieval devices.
Hydrophilic coating vs PTFE coating: Key Differences
Hydrophilic coatings become slippery when wet to reduce friction during navigation, while PTFE coatings provide a low-friction surface commonly used on catheter lumens. Hydrophilic wires can aid crossing of tortuous anatomy, whereas PTFE is often applied where a consistently smooth lumen is wanted for device passage. InWIRE guidewires use a hydrophilic coating, while AngioCATH Guiding Catheters use a PTFE-coated lumen. Which coating suits a task is a clinical decision based on the device role and anatomy.
How INVAMED Supports Both Approaches
INVAMED organizes its catheter and guidewire portfolio by function — access, crossing, support, delivery, and retrieval — across sizes, tip shapes, and coatings. INVAMED positions a comprehensive catheter and guidewire portfolio spanning access, crossing, support, delivery, and retrieval across vascular, neurovascular, and urological uses. Access and delivery items include the Invaducer Introducer Sheath Set, the JaGuar Guiding Sheath, the Jaguar Braided Long Sheath with an approximately 5 cm hydrophilically coated distal tip, and AngioCATH Guiding Catheters in multiple tip shapes.
Key Considerations
- Product specifications and dimension ranges are provided in INVAMED documentation and reflect device design rather than guaranteed clinical outcomes.
- Sheath inner and outer diameters carry different implications for device compatibility and access, and should be confirmed in product documentation.
- Device sizing across French, inch, and centimeter units must be matched to the vessel, the access site, and the devices being delivered, as determined by the clinician.
Frequently Asked Questions
What is the GuideX guide extension catheter?
GuideX is INVAMED's mother-and-child guide extension catheter, which is the subject of a randomized clinical trial versus the Launcher guiding catheter in PCI (GUIDEX_FR, NCT06009757).
What is the regulatory status of these catheter and guidewire devices?
Device availability and regulatory status vary by country. Please contact INVAMED or your authorized local distributor for current regulatory information applicable to your region.
Does the Invaducer sheath set include accessories?
Yes. The Invaducer Introducer Sheath Set includes a dilator, guidewire, syringe, and sheath, with a hemostasis valve and side port at the proximal end.
Clinical and Technical Context
AngioCATH Guiding Catheters use durable PEBAX/PA polymer construction with a PTFE-coated lumen and multiple tip shapes for cardiac and peripheral anatomies. Product specifications and dimension ranges are provided in INVAMED documentation and reflect device design rather than guaranteed clinical outcomes. INVAMED offers a steerable support catheter with a deflectable tip and a re-entry system within its catheter portfolio. Catheters and guidewires are the working tools of minimally invasive procedures, used to gain vascular access and navigate to a target inside the body. The configuration selected depends on the crossing or delivery task as judged by the operator. Device sizing across French, inch, and centimeter units must be matched to the vessel, the access site, and the devices being delivered, as determined by the clinician. The choice of embolization catheter and technique is determined by the interventionalist. Which diameter is used depends on the vessel, the devices being delivered, and clinician preference.
Related on INVAMED
- Comprehensive Catheter & Guidewire Systems — product category
- Guiding Catheters and Tip Shapes: Technology, Uses and Considerations
- Hydrophilic Peripheral Guidewires: Technology, Uses and Considerations
- How does an introducer sheath work?
Important Disclaimer
This article is intended for general educational and technical information about medical device technologies. It is not medical advice, a diagnosis, or a treatment recommendation, and it does not replace consultation with a qualified healthcare professional. Any decision about diagnosis or treatment should be made by a licensed clinician based on an individual assessment. INVAMED devices are intended for use by trained healthcare professionals in accordance with the applicable Instructions for Use (IFU) and local regulatory approvals. Product availability and indications vary by country.
Reviewed by the INVAMED Medical Affairs team. Content is educational and technical in nature.