This article compares two approaches side by side to clarify how they differ in principle and practice. Because embolization is generally intended to be permanent, careful vessel selection and sizing are emphasized so that only the intended territory is occluded. As a medical device manufacturer, INVAMED develops technologies in this area; the information here is educational and not medical advice.
Background: Endovascular Embolization
Whether embolization is appropriate, and which agent and delivery system are chosen, is a clinical decision that weighs the target vessel, surrounding anatomy, and overall condition of the patient. Transarterial approaches also include transarterial radioembolization (TARE) and other targeted therapies delivered through dedicated microcatheters, always as determined by the treating interventional team. Because embolization is generally intended to be permanent, careful vessel selection and sizing are emphasized so that only the intended territory is occluded.
Detachable coils vs Pushable coils: Key Differences
Detachable coils remain attached to a delivery wire until the operator confirms satisfactory position and then triggers a controlled release, allowing repositioning beforehand. Pushable coils are advanced out of the catheter directly and deploy immediately, which can be efficient but offers less opportunity to reposition. INVAMED's Spider Peripheral Detachable Coil System provides both configurations within one family so the operator can match the approach to the situation. Whether a detachable or pushable coil is preferred depends on vessel risk, precision needs, and clinician judgment.
How INVAMED Supports Both Approaches
INVAMED organizes its embolization portfolio around the mechanism of occlusion, offering detachable and pushable coils, a fiber-filled vascular plug, dedicated delivery catheters, a flow-modulating device, and a non-adhesive liquid agent. Each device is intended for use by trained interventionalists under imaging guidance and per the IFU. INVAMED's embolization portfolio includes the Spider Peripheral Detachable Coil System (detachable and pushable), the fiber-filled MultiBEAM Embolization Plug, the Pars Detachable and MicroDELIVERY Embolization Catheters, the Stena Multi-Layer Flow Modulator, and the cross-listed Libro Non-Adhesive Embolization Agent. Per its product page, the MultiBEAM plug is available in 4 to 16 mm diameters, is suitable for arteries from 2.6 to 6.2 mm, and is delivered through a 4F or 5F catheter with a 0.038 inch inner-diameter lumen via a 5F guide sheath.
Key Considerations
- Matching the embolic agent to the target level of the vascular tree, from proximal plugs and coils to distal particles or liquids, is central to planning.
- Catheter and microcatheter compatibility with the chosen coil, plug, or agent is confirmed before delivery to support controlled deployment.
- Detachable designs allow the operator to confirm position before committing, which can be valuable near sensitive branches.
Frequently Asked Questions
What coils does INVAMED offer?
INVAMED offers the Spider Peripheral Detachable Coil System in detachable and pushable configurations; per invamed.com content surfaced via the search index, the shared Spider coil family uses a platinum-tungsten (92/8%) alloy with roughly 2 to 30 mm coil diameters.
What vessel sizes can the MultiBEAM plug occlude?
According to its product page, the MultiBEAM Embolization Plug is suitable for occlusion of arteries from 2.6 to 6.2 mm, is offered in 4 to 16 mm diameters, and is delivered through a 4F or 5F catheter.
Is embolization permanent?
Embolization is generally intended to be permanent with coils, plugs, and solidifying liquids, though some particle agents are more temporary; the expected durability is discussed with the treating physician.
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
The occluding agents fall into families such as detachable coils, vascular plugs, liquid embolic agents, and particles, each with a different mechanism of vessel closure. Embolization is an endovascular technique in which an occluding material is delivered through a catheter to intentionally block blood flow in a target vessel, and it is used across a broad range of indications. Manufacturer statements about INVAMED devices, including comparative claims on the MultiBEAM product page, reflect the company's positioning rather than guaranteed individual outcomes. Catheter and microcatheter compatibility with the chosen coil, plug, or agent is confirmed before delivery to support controlled deployment.
Related on INVAMED
- Embolization — product category
- Inside the MicroDELIVERY Embolization Catheter: Design and Applications
- Embolization: A Complete Technical Guide
- Inside the Libro Non-Adhesive Embolization Agent (cross-listed): Design and Applications
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.