Therapy Aneurism
Aneurysm, is a weak, bulging spot on the wall of an artery.
A brain aneurysm, also referred as Intracranial Aneurysm, is a bulge in a blood vessel caused by a weakness in an artery wall. The continuous pressure of blood flow within the artery causes weak or thin spots of the artery wall to gradually become weaker and enlarge over time. This pressure may cause the aneurysm to rupture and allow blood to escape into the space around the brain called the subarachnoid space. Most individuals do not experience any symptoms from an aneurysm and only realize that they have one once it ruptures. Aneurysms can rupture and cause bleeding into the brain that could lead to serious stroke or death.
Smoking, high blood pressure, hardening of arteries (Arteriosclerosis), alcohol, high consumption of salt & caffeine based drinks, less exercises, family history, age (over 65)
Although some aneurysms can go unnoticed for a lifetime, some aneurysm patients will experience the following symptoms:
1. Limited eye
2. movement
3. Dilated pupils
4. Double vision
5. Pain above and behind eye
6. Localized headache (may indicate a rupture)
Asymptomatic, unruptured aneurysms can be diagnosed and located by MRI (Magnetic Resonance Imaging), MRA (Magnetic Resonance Angiography) or by CT imaging (Computed Tomography Scan). This cerebral arteriography is used to confirm the presence of an aneurysm and to evaluate which treatment options may be best suited for particular aneurysms based on size, shape and location. A lumbar puncture or spinal tap may also be used to detect the presence of blood in the Cerebral Spinal Fluid (CSF), which may indicate the rupture of a brain aneurysm.
Aneurysms can be classified by size and shape.
Small: Up to 10mm, Large : 10-25mm, Giant: Larger than 25mm.
Dissecting Aneurysm, Wide-neck Aneurysm, saccular Aneurysm, fusiform Aneurysm, Ruptured
Aneurysm
MicroVention provides a full range of neuro-interventional products to treat brain aneurysms
1. Coil Embolization - Coil Embolization is a technique used to treat brain aneurysms by placing
detachable coils within the aneurysm. Related Products: Microvention coils, LVIS, Headway
Microcatheter
2. Flow Disruption - Flow Disruption is a technique used to treat wide-neck brain aneurysms by
placing a single, intrasaccular device within the aneurysm, altering the intra-aneurysmal flow.
Related Products: WEB Intrasaccular Devices, WEB™ Delivery System, VIA Microcatheter.
3. Flow Diversion - The Flow Diversion technique uses a low porosity stent across a wide-necked
brain aneurysm. The device is placed across the aneurysm neck opening and extends into the
parent artery on both sides. This alters intra-aneurysmal blood flow patterns and redirects flow
away from the aneurysm
Related Products: FRED, FREDX, Headway Microcatheter
Access products allow doctors to gain access to the treatment area.
1. Guide Catheters- Chaperon
A catheter is a hollow, flexible tube inserted into a vessel to allow the passage of fluids or
distend a passageway. They are large, robust catheters that allow smaller catheters to pass
through and facilitate the placement of various medical devices while providing stability during
the procedure.
2.Intermediate catheter – Sofia, Sofia Plus
An intermediate catheter is designed to help provide stability by reducing the tendency of
microcatheter kick back during delivery/implantation of medical devices.
3. Balloon catheter – Scepter C, Scepter XC
A balloon catheter is a type of soft catheter with an inflatable balloon at its tip. The deflated
balloon catheter is positioned, then inflated to perform the necessary procedure, and deflated
again in order to be removed.
4.Microcatheter – Headway, VIA, Wedge
A microcatheter is a small diameter catheter that can be tracked over a guidewire in order to
reach the target lesion.
5.Guidewire - Traxcess
A guidewire is a thin, flexible wire that is used to enter small and tortuous vessels to act as a
guide for subsequent insertion of another instrument such as a microcatheter or balloon
catheter.
Ischemic Stroke
Stroke happens when the blood supply to the brain is blocked due to a blockage within a blood vessel in the brain. The brain cells downstream of the blockage are deprived of oxygen and nutrients and will quickly die if left untreated. The death of enough brain cells can result in permanent disability or death.
Ischemic Stroke (IS) occurs because of a clot in the artery blocking the flow of blood to the brain leading
to dysfunction or death of the brain tissue.
Symptoms- Signs you may be having a stroke include:
Sudden numbness or weakness of the face, arm or leg, especially on one side of the body
Sudden confusion, trouble speaking or understanding.
Sudden trouble seeing or blurred vision in one or both eyes.
Sudden trouble walking, dizziness, loss of balance or coordination.
Sudden severe headache with no known cause
To help spot a stroke we use the acronym FAST: Facial drooping – one side of the face droops when the person tries to smile.
Arm weakness – one arm drifts downward when the person tries to hold both arms up.
Speech difficulty – the person exhibits slurred or strange speech.
Time to call 911
Although some aneurysms can go unnoticed for a lifetime, some aneurysm patients will experience the
following symptoms:
1. Limited eye
2. movement
3. Dilated pupils
4. Double vision
5. Pain above and behind eye
6. Localized headache (may indicate a rupture)
CT/CTA/CTP/MR/MRA to detect any hemorrhage, determine the location of the stroke and how much of the brain tissue affected is salvageable, and choose the best type of treatment for the patient.
1.Mechanical ThrombectomyMechanical Thrombectomy is a technique typically performed using an aspiration catheter
and/or stent-like retrieval device to remove blood clots from the neurovasculature of a person
experiencing an ischemic stroke. Related Products: ERIC (Stentriever), SOFIA Plus(Aspiration
catheter)
2.Aspiration
MicroVention Stroke Accessories work together with our core ischemic stroke technologies
providing physicians with complete treatment solutions. Related Products: Wedge
Microcatheter, Aspiration Syringe Kit, Aspiration Tubing Kit.
Neurovascular Malformations
Malformations are abnormal connections between arteries and veins
An arteriovenous malformation (AVM) or dural arteriovenous fistula (AVF) is an abnormal connection between blood vessels or the entanglement of blood vessels that causes shunting of blood from an artery to a vein, bypassing normal tissue and depriving oxygen and nutrients from that area of the brain.
Although most AVMs are congenital and relatively uncommon, the exact etiology or cause of their formation is unknown.
A brain arteriovenous malformation may not cause any signs or symptoms until the AVM ruptures, resulting in bleeding in the brain (hemorrhage). In about half of all brain AVMs, hemorrhage is the first sign. But some people with brain AVM may experience signs and symptoms other than bleeding related to the AVM. In people without hemorrhage, signs and symptoms of a brain AVM may include:
Seizures
Headache or pain in one area of the head
Muscle weakness or numbness in one part of the body
Severe headache, Weakness, numbness or paralysis, Vision loss, Difficulty in speaking, Confusionor inability to understand others
Severe unsteadiness
Due to advances in technology with brain imaging techniques, an increasing numbers of AVM/AVF are detected before rupture.
Arteriovenous malformation – abnormal tangle of blood vessels where arteries shunt directly into veins with no intervening capillary bed; high pressure. AVMs can form anywhere there are arteries and veins. Brain AVMs can occur on the surface (also called cortical), deep (in the thalamus, basal ganglia, or brainstem), and within the dura (the tough protective covering of the brain). Cavernoma – abnormal cluster of enlarged capillaries with no significant feeding arteries or veins; low pressure. Venous malformation – abnormal cluster of enlarged veins resembling the spokes of a wheel with no feeding arteries; low pressure, rarely bleeds and usually not treated. Capillary telangiectasia – abnormal capillaries with enlarged areas (similar to cavernoma); very low pressure, rarely bleeds and usually not treated. Dural AV fistula – direct connection between one or more arteries and veins into a sinus. The veins of the brain drain into venous sinuses (blood-filled areas located in the dura mater) before leaving the skull and traveling to the heart. Dural AV fistulas and carotid-cavernous fistulas (CCF) are the most common.
1. Liquid Embolization
2. Coil Embolization
Embolic coils are controlled mechanical implants that are used to slow blood flow within targeted
vascular malformations often in conjunction with liquid embolic agents or other embolization devices
Related Products: Microvention Platinum coils VFC, 3D coils, Helical coils.