139 results about "Brain arteries" patented technology

Disclosed is a blood debris deflector, for preventing embolization during a surgical procedure, and methods for insertion and removal of the deflector. The method can include the steps of advancing an embolic deflection device through a first side branch vessel and into the main vessel, manipulating the deflection device such that it covers the opening to a second side branch vessel, and inverting the deflection device to remove the device from a patient.

Devices and methods for delivering stents to target vessel regions, including stent delivery through microcatheters to narrow cerebral arteries. One stent delivery device includes a stent having the distal region everted over the distal end of a delivery tube, having the everted stent distal end captured by a distal element of a elongate release member disposed through the delivery tube. The delivery tube can have a distal taper to a small profile distal end. The everted stent distal region can be captured between the release member distal element and the surrounding delivery tube distal region walls. The captured and everted stent can be distally advanced to a target site, followed by manipulating the release member to free the captured stent. Some devices utilize distal advancement of the release member while other devices use proximal retraction of the release member to free the captured stent distal end. Once released, the stent is free to self-expand or be expanded against the surrounding blockage and / or vessel walls. In some methods, a guide catheter or microcatheter is also included and disposed about the everted and captured stent to advance the stent, delivery tube, and release member to a location near the site to be stented. The devices and methods provide stent delivery not requiring an enclosing delivery sheath about the stent. The everted stent can thus have a very small distal profile enabling small diameter vessels to be crossed and treated.

Methods for the diagnosis and evaluation of stroke and stroke sub-type employ a variety of bio-markers including cellular fibronectin (c-Fn) assembled as a panel for stoke diagnosis and evaluation. Methods are disclosed for selecting markers and correlating their combined levels with a clinical outcome of interest. In various aspects the methods permit early detection and differentiation of stroke subtypes, determination of the prognosis of a patient presenting stroke symptoms, and identification of a patient at risk for early hematoma growth and / or malignant massive cerebral artery infarction. The disclosed methods provide rapid, sensitive and specific assays to greatly increase the number of patients that can receive beneficial stroke treatment and therapy, and to reduce the human and economic costs associated with incorrect stroke diagnosis.

A medical device having a catheter and one or more expandable constricting / occluding members. The catheter is adapted for use with therapeutic or diagnostic devices, including an angioplasty / stent catheter and an atherectomy catheter. A first constrictor / occluder mounted at the distal end of the catheter is adapted for placement in a brachiocephalic or subclavian artery. A second constrictor mounted proximal to the first constrictor / occluder is adapted for placement in the descending aorta. Pressure measuring devices may be included, and filters may be used to capture embolic debris. Methods of using the devices for preventing distal embolization during extracranial or intracranial carotid procedures or vertebral artery procedures by augmenting collateral cerebral circulation by coarctation of the aorta to enhance reversal of blood flow in an internal carotid artery, an external carotid artery, and / or a common carotid artery toward the subclavian artery are disclosed.

The invention relates to a Chinese medicinal preparation for treating chronic cerebral circulation insufficiency. The Chinese medicinal preparation is prepared from the following traditional Chinese medicines: 30 grams of astragalus, 15 grams of kudzuvine root, 15 grams of Chinese taxillus twig, 30 grams of root of red-rooted salvia, 9 grams of raw fructus crataegi, 9 grams of szechuan lovage rhizome, 10 grams of cassia twig, 12 grams of dwarf lilyturf root, 6 grams of Chinese magnoliavine fruit and 15 grams of fried date kernel. A preparation method of the Chinese medicinal preparation comprises the following steps of: adding 1,000 ml of water into the Chinese medicinal herbs subjected to processing for decocting; concentrating the decoction to 200 ml; and extracting residues and filtering to obtain a decoction. The Chinese medicinal preparation is taken once every day, and each treatment course lasts for two weeks. The Chinese medicinal preparation has the effects of replenishing qi, enriching the blood, relaxing muscles and joints, activating the channels, remarkably improving heart and brain circulation, enhancing mechanism immunity, resisting inflammation, delaying senility, treating both principal and secondary aspects of a disease, and the like, has reasonable compatibility, and can be used for effectively relieving symptoms such as dizziness, head heaviness, headache, dysphoria, tinnitus, irritability, insomnia, dreaminess, hypomnesia, inattention, fatigue, and the like of a patient suffering from chronic cerebral circulation insufficiency.

The invention discloses application of a Tibetan medicinal composition to the preparation of a medicament for treating cerebral circulation insufficiency. The Tibetan medicinal composition consists of the following raw material medicaments in part by weight: 5 to 15 parts of lamiophlomis, 2 to 10 parts of whin, 15 to 60 parts of turmeric, 7 to 20 parts of pepper, 5 to 15 parts of buffalo horn, 15to 40 parts of myricariagermanica, 0.1 to 2.5 parts of safflower, 0.1 to 5 parts of borneol and 0.1 to 5 parts of camphor. Further research on the pharmacology of the conventional Tibetan medicinal composition indicates that the Tibetan medicinal composition has good curative effect on cerebral circulation insufficiency. Moreover, natural wild medicinal materials from the Tibet Plateau are adopted and no chemically-synthesized stabilizing agent is added, so that the Tibetan medicinal composition has no toxic or side effect on a human body, is safe and effective and is suitable for all kinds of people and for treating various types of cerebral circulation insufficiency.