This article explains, in educational terms, neurovascular access catheters — how the technology works and where it fits. Acute ischemic stroke from a large vessel occlusion happens when a clot blocks a major brain artery, cutting off blood flow to a region of brain tissue. As a medical device manufacturer, INVAMED develops technologies in this area; the information here is educational and not medical advice.
Background: Acute Ischemic Stroke and Intracranial Aneurysm Intervention
Intracranial aneurysms are focal outpouchings of a brain artery wall, and endovascular options aim to seal the aneurysm from circulation to reduce rupture risk. Patient eligibility, the treatment window, and device selection are all determined by the treating neurointerventional team using imaging and current criteria. Mechanical thrombectomy removes the clot with a catheter-based device, and it is used in selected patients alongside or after intravenous thrombolysis where indicated.
Distal Access Catheters and Guidewires
Reaching intracranial targets requires navigable microcatheters, distal access catheters, and neurovascular guidewires that track through tortuous cerebral vessels. Stable distal access supports the delivery of stent retrievers, coils, and embolic agents to the treatment site. INVAMED's InWIRE Neurovascular Guidewire and neurovascular microcatheters and distal access catheters support this access role. Access-device selection is made by the operator according to the vascular pathway and the therapy being delivered.
Design and Technical Notes
INVAMED's neurovascular portfolio spans clot retrieval, aspiration, aneurysm packing, embolization, and the access tools that reach the intracranial circulation. Manufacturer statements, including the described up-to-24-hour window for the KinG device, reflect product content and do not establish individual eligibility. For aneurysms, coil sizing and packing or flow-diverter selection are matched to the aneurysm's shape and neck.
Key Considerations
- All INVAMED neurovascular devices are intended for use by trained neurointerventional operators under imaging guidance and per the IFU.
- Manufacturer statements, including the described up-to-24-hour window for the KinG device, reflect product content and do not establish individual eligibility.
- For aneurysms, coil sizing and packing or flow-diverter selection are matched to the aneurysm's shape and neck.
Frequently Asked Questions
What is the Libro embolization agent?
INVAMED's Libro is a non-adhesive liquid embolic agent combining EVOH copolymer, DMSO solvent, and tantalum for radiopacity, offered per INVAMED in multiple viscosity formulas for AVMs and tumors.
What is the INVAMED stent retriever called?
INVAMED's stent retriever is the KinG Intracranial Revascularization Device, a self-expanding nitinol device with platinum markers for fluoroscopic visualization.
Who determines eligibility for thrombectomy?
The treating stroke team determines eligibility using imaging and current criteria; this article is educational and not medical advice.
About INVAMED
Device availability and regulatory status vary by country. Please contact INVAMED or your authorized local distributor for current regulatory information applicable to your region.
Clinical and Technical Context
Clot characteristics and vessel tortuosity influence whether a stent retriever, aspiration, or combined technique is chosen. Liquid embolic use requires attention to concentration, radiopacity, and injection control for the target lesion. Mechanical thrombectomy removes the clot with a catheter-based device, and it is used in selected patients alongside or after intravenous thrombolysis where indicated. For aneurysms, coil sizing and packing or flow-diverter selection are matched to the aneurysm's shape and neck. Whether a flow diverter is appropriate, versus coiling, is a specialized decision made by the treating clinician. INVAMED's InWIRE Neurovascular Guidewire and neurovascular microcatheters and distal access catheters support this access role. INVAMED's Spider Intracranial Coil System uses a platinum-tungsten 92/8 percent alloy in detachable and pushable configurations with instant mechanical detachment; according to INVAMED, Spider coils provide aneurysm packing across 2 to 30 mm coil diameters. INVAMED's neurovascular portfolio includes flow diverter stents for this parent-vessel reconstruction approach to selected aneurysms.
Related on INVAMED
- Neurovascular Interventions — product category
- Neurovascular Interventions: A Complete Technical Guide
- Who is eligible for mechanical thrombectomy?
- Understanding Flow Diverter Stents
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.