Neurovascular Division

Groundbreaking devices for neurovascular treatment

Neurovascular Division MicroVention

In collaboration with MicroVention*, a Terumo subsidiary with headquarters in the United States, the Neurovascular division provide interventional devices globally for the treatment of neurovascular conditions including brain aneurysm, stroke, and neurovascular malformations. We strive to develop innovative therapy devices that expand options for treating neurovascular conditions while greatly reducing the physical burden on patients.

In the past, the Neurovascular division has grown while enhancing its product lineup, with a focus on coils and coil assist stents to treat aneurysms. In recent years, the business also offers new aneurysm treatment options, including flow re-direction stents and embolization devices. Additionally, the Company has taken on the challenge of developing and offering revolutionary new stroke treatments that may provide better outcomes and expand the potential for neurovascular treatment options; these include vascular removal devices and aspiration catheters. 

  • *

    Founded 1997, joined Terumo Group in 2006

How are neuroendovascular diseases treated?

When complications occur in blood vessels of the brain, blood can stop flowing properly to the brain, and may destroy essential brain cells; this condition is collectively referred to as "stroke." Generally, there are two causes of stroke: Blockage of blood vessels of the brain; or breakage of and bleeding from the blood vessels of the brain. When blockage of these vessels occurs, it is referred to as "cerebral infarction," and breakage and bleeding is called "cerebral hemorrhage." One representative type of cerebral hemorrhage is subarachnoid hemorrhage; this usually occurs when an aneurysm ruptures.

In the past, the common medicinal way to treat cerebral infarction was to administer drugs that would dissolve the blood clot. The common surgical aneurysm treatment was open surgery to the skull (craniotomy) where a clip device is placed to stop blood flow in the affected blood vessel to assist to prevent rupture. In recent years, however, the treatments of cerebral infarction and aneurysm alike are evolving rapidly to use catheters in what is called "neurovascular intervention," which greatly reduces the physical burden on patients.

As treatments evolve, increasingly advanced medical devices including catheters, coils, stents and flow disruption devices are being developed to expand the range of patients who can benefit from these treatments.

Brain aneurysm

  1. A weakness (deformation) occurs in a blood vessel of the brain. If it ruptures, it may cause a neurovascular complication.

    Brain aneurysm
  2. Place material inside aneurysm, to prevent blood flow into the aneurysm which may cause a rupture

Ischemic stroke

  1. A blood clot occurs in a blood vessel of the brain. Blood circulation is interrupted, and brain tissues can be damaged.

    Ischemic stroke
  2. Aspirate (suction) the clot with a catheter or use a retrieval device to remove blood clot and restore blood flow

Neurovascular malformations

  1. Arteries and veins join abnormally and can entangle blood vessels bypassing normal tissue and may deprive oxygen and nutrients from that area of the brain.

    Neurovascular malformations
  2. Place embolization material at the lesion to close off the abnormal blood flow

Main Products

Note: The regulatory approval status and availability of these products differ by country or region.

Embolization, stop blood flow

Hydrogel embolic coil

Hydrogel embolic coil

intrasaccular embolization system

Intrasaccular device

Flow diverters

Flow diverter

Interrupt blood flow with balloons, coils, or liquid embolic agent

Occlusion balloon catheters

Occlusion balloon catheter

Liquid embolic agent Liquid embolic agent

Liquid embolic agent

Remove blood clots from neuro vessels, widen clogged blood vessels

Aspiration Catheters

Aspiration catheter

Clot retrieval device

Clot retrieval device

Clot retrieval device

Carotid stent

To gain access to a lesion


Micro catheter