Below is an educational, technical answer to a question many patients and clinicians ask. Mechanical thrombectomy removes the clot with a catheter-based device, and it is used in selected patients alongside or after intravenous thrombolysis where indicated. 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
Aneurysm techniques include packing the sac with detachable coils and redirecting flow across the neck with a densely braided flow diverter so the sac thromboses over time. Because brain tissue is highly time-sensitive, rapid restoration of flow is central to endovascular stroke care in eligible patients. Patient eligibility, the treatment window, and device selection are all determined by the treating neurointerventional team using imaging and current criteria.
How does a stent retriever work?
A stent retriever is delivered folded inside a microcatheter and then unsheathed across the clot, where its self-expanding mesh expands into and grips the thrombus. After the device integrates with the clot over a short interval, it is withdrawn along with the captured clot to reopen the artery. INVAMED's KinG device is a self-expanding nitinol retriever with platinum markers for fluoroscopic visualization during this process. Whether a stent retriever is used is determined by the treating neurointerventional team.
What This Means in Practice
Manufacturer statements, including the described up-to-24-hour window for the KinG device, reflect product content and do not establish individual eligibility. All INVAMED neurovascular devices are intended for use by trained neurointerventional operators under imaging guidance and per the IFU. For aneurysms, coil sizing and packing or flow-diverter selection are matched to the aneurysm's shape and neck.
Key Considerations
- Manufacturer statements, including the described up-to-24-hour window for the KinG device, reflect product content and do not establish individual eligibility.
- Liquid embolic use requires attention to concentration, radiopacity, and injection control for the target lesion.
- All INVAMED neurovascular devices are intended for use by trained neurointerventional operators under imaging guidance and per the IFU.
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 regulatory status of these neurovascular 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.
What are Spider coils made of?
According to INVAMED, Spider Intracranial Coils are made of a platinum-tungsten 92/8 percent alloy and are offered across 2 to 30 mm coil diameters in detachable and pushable configurations.
Clinical and Technical Context
Liquid embolic use requires attention to concentration, radiopacity, and injection control for the target lesion. Access-device selection is made by the operator according to the vascular pathway and the therapy being delivered. For aneurysms, coil sizing and packing or flow-diverter selection are matched to the aneurysm's shape and neck. Patient eligibility, the treatment window, and device selection are all determined by the treating neurointerventional team using imaging and current criteria. 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. Coil sizing and packing strategy are determined by the neurointerventionalist for the specific aneurysm. Intracranial aneurysms are focal outpouchings of a brain artery wall, and endovascular options aim to seal the aneurysm from circulation to reduce rupture risk. INVAMED's KinG Intracranial Revascularization Device is a self-expanding nitinol stent retriever with platinum markers at the proximal and distal ends of the basket for fluoroscopic visualization, intended for vessels including the internal carotid, middle and anterior cerebral, and basilar and vertebral arteries.
Related on INVAMED
- Neurovascular Interventions — product category
- Neurovascular Interventions: A Complete Technical Guide
- What is the first-pass effect in thrombectomy?
- What is recovery like after stroke thrombectomy?
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.