Nickel titanium memory alloy medical

Nickel titanium memory alloy medical value is high, made ​​of nickel titanium memory alloy interventional devices have been widely used in medicine, particularly in the application of cerebral blood vessels.
Divided into three categories:
(1) made ​​of nickel titanium Molybdenum tube alloy carotid stent (Carotid stent), primarily for the treatment of carotid artery disease, such as vascular stenosis, can prevent stroke and other diseases. The product uses a laser cut tubing made ​​of nickel titanium memory alloy, are self-expandable stent. In the first treatment using the front bracket to the patient the desired size, and then press hold the bracket to the delivery sheath tube. As the material having excellent toughness and super-elastic, the stent sheath is a small plastic deformation does not occur. Will be transported to the carotid sheath parts, the retreat of the sheath and then release the bracket, then stand on their own to restore its shape, while the narrow part of distraction;
(2) made ​​of nickel titanium memory alloy distal protection device (Embolic protection device), mainly used in interventional procedures in carotid stents, distal protection device in the lesions (intracranial internal carotid artery) collect plaque, prevent distal embolization of cerebral phenomena occur. The product uses nickel titanium memory alloy wire braid or laser cut nickel titanium memory alloy skeleton made ​​of micro tubing, shaping into a predetermined size of special shape, and then covered with a polymer film on the product surface, again on 100-200 micron hole, fixed to the guidewire;
(3) made ​​of nickel titanium memory alloy aneurysm stent (Cerebral aneurysm stent), mainly used in the treatment of cerebral aneurysms, especially for wide-necked aneurysms and other complex diseases treatment. Cerebral aneurysms are generally self-expanding stents nickel titanium memory alloy stent, stent general release in cerebral aneurysm neck, mesh coil through its liberation in the aneurysm, coil stents play a supporting role , in order to prevent the coil from the aneurysm off.
These are the nitinol cerebral vascular interventional devices in the application, with a very high medical value.