Below is an educational, technical answer to a question many patients and clinicians ask. 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. 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
Access is commonly established with an introducer sheath, which creates a stable, valved entry point through the vessel wall for exchanging devices. Catheters and guidewires are the working tools of minimally invasive procedures, used to gain vascular access and navigate to a target inside the body. INVAMED offers a comprehensive catheter and guidewire portfolio spanning sheaths, guidewires, guiding and support catheters, microcatheters, and retrieval devices.
What is an endovascular snare used for?
An endovascular snare is used to capture and retrieve foreign bodies or misplaced devices from within the vasculature. A multi-loop design is intended to improve the chance of engaging an object regardless of its orientation. INVAMED's Keeper Endovascular Snare uses a multi-loop design with maximum radial force, low-profile introduction, and is single-use and sterile. Retrieval technique and device choice are directed by the operator for the specific case.
What This Means in Practice
Product specifications and dimension ranges are provided in INVAMED documentation and reflect device design rather than guaranteed clinical outcomes. For a device under active study such as the GuideX guide extension in the GUIDEX_FR trial (NCT06009757), any comparative claims are for the trial to establish. Tip shape, coating, core material, and support characteristics are selected to fit the specific navigation, crossing, or delivery task.
Key Considerations
- 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.
- For a device under active study such as the GuideX guide extension in the GUIDEX_FR trial (NCT06009757), any comparative claims are for the trial to establish.
- Sheath inner and outer diameters carry different implications for device compatibility and access, and should be confirmed in product documentation.
Frequently Asked Questions
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.
Who selects the appropriate catheter or guidewire?
A trained clinician selects devices based on the anatomy and procedural task; this content is educational and not a treatment recommendation.
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
InWIRE Peripheral Guidewires are available with nitinol or stainless steel cores in 0.035 inch and 0.038 inch diameters. The Zebra Guidewire for Urological Procedures features a high-visibility striped coating and a flexible atraumatic tip, complementing INVAMED's broader urology guidewire range. AngioCATH Guiding Catheters use durable PEBAX/PA polymer construction with a PTFE-coated lumen and multiple tip shapes for cardiac and peripheral anatomies. The choice of embolization catheter and technique is determined by the interventionalist. The appropriate tip shape and catheter are chosen by the clinician for the target anatomy. The GuideX Guide Extension Catheter uses a mother-and-child design and is the subject of a randomized clinical trial versus the Launcher guiding catheter in PCI (GUIDEX_FR, NCT06009757). INVAMED offers a neurovascular microcatheter line and a distal access catheter for neurovascular use within its portfolio. 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.
Related on INVAMED
- Comprehensive Catheter & Guidewire Systems — product category
- What is a hydrophilic guidewire used for?
- Hydrophilic Peripheral Guidewires: Technology, Uses and Considerations
- Crossing and Support Catheters: How It Works and Why It Matters
Important Disclaimer
The information here is provided for educational purposes and to describe device technology; it is not a substitute for professional medical advice, diagnosis, or treatment. Only a licensed healthcare provider can determine whether a given procedure or device is appropriate for a specific patient. INVAMED products are restricted to use by qualified professionals following the official IFU. Regulatory clearance and labeling differ between regions, and not all products or indications are available in every market.
Reviewed by the INVAMED Medical Affairs team. Content is educational and technical in nature.