85 results about "Brain vessels" patented technology

Patients having diminished circulation in the cerebral vasculature as a result of stroke or from other causes such as cardiac arrest, shock or head trauma, or aneurysm surgery or aortic surgery, are treated by flowing an oxygenated medium through an arterial access site into the cerebral vasculature and collecting the medium through an access site in the venous site of the cerebral vasculature. Usually, the cold oxygenated medium will comprise autologous blood, and the blood will be recirculated for a time sufficient to permit treatment of the underlying cause of diminished circulation. In addition to oxygenation, the recirculating blood will also be cooled to hypothermically treat and preserve brain tissue. Isolation and cooling of cerebral vasculature in patients undergoing aortic and other procedures is achieved by internally occluding at least the right common carotid artery above the aortic arch. Blood or other oxygenated medium is perfused through the occluded common carotid artery(ies) and into the arterial cerebral vasculature. Usually, oxygen depleted blood or other medium leaving the cerebral vasculature is collected, oxygenated, and cooled in an extracorporeal circuit so that it may be returned to the patient. Occlusion of the carotid artery(ies) is preferably accomplished using expansible occluders, such as balloon-tipped cannula, catheters, or similar access devices. Access to the occlusion site(s) may be open surgical, percutaneous, or intravascular.

The present invention concerns novel stent apparatuses for use in treating lesions at or near the bifurcation point in bifurcated cardiac, coronary, renal, peripheral vascular, gastrointestinal, pulmonary, urinary and neurovascular vessels and brain vessels. More particularly, the invention concerns a stent apparatus with at least one side opening which may further comprise an extendable stent portion laterally extending from the side opening and at least partly in registry with the wall of the side opening. Devices constructed in accordance with the invention include, singularly or in combination, a main expandable stent comprising at least one substantially circular side opening located between its proximal and distal end openings, which side opening may further comprise an expandable portion extending radially outward from the edges of the side opening; and a branch stent comprising proximal and distal end openings and which may further comprise a contacting portion at its proximal end, and which may optionally be constructed to form either a perpendicular branch or a non-perpendicular branch when inserted through a side opening of the main stent. The stents of the invention are marked with, or at least partially constructed of, a material which is imageable during intraluminal catheterization techniques, most preferably but not limited to ultrasound and x-ray.

The present invention concerns novel stent apparatuses for use in treating lesions at or near the bifurcation point in bifurcated cardiac, coronary, renal, peripheral vascular, gastrointestinal, pulmonary, urinary and neurovascular vessels and brain vessels. More particularly, the invention concerns a stent apparatus with at least one side opening which may further comprise an extendable stent portion laterally extending from the side opening and at least partly in registry with the wall of the side opening. Devices constructed in accordance with the invention include, singularly or in combination, a main expandable stent comprising at least one substantially circular side opening located between its proximal and distal end openings, which side opening may further comprise an expandable portion extending radially outward from the edges of the side opening; and a branch stent comprising proximal and distal end openings and which may further comprise a contacting portion at its proximal end, and which may optionally be constructed to form either a perpendicular branch or a non-perpendicular branch when inserted through a side opening of the main stent. The stents of the invention are marked with, or at least partially constructed of, a material which is imageable during intraluminal catheterization techniques, most preferably but not limited to ultrasound and x-ray.

A method for increasing cerebral blood flow in a patient. A electrical stimulating device is provided. The electrical stimulating device is applied to the patient at a region adjacent the cervical sympathetic chain, the brain stem, the head, or the sympathetic nervous system. The electrical stimulating device is applied by any route selected from transcutaneous, subcutaneous, and subarachnoid. The electrical stimulating device is activated to stimulate or inhibit nerve impulses of the cervical sympathetic chain, thereby producing vasodilation in the cerebral vasculature, thereby increasing cerebral blood flow. Devices for increasing cerebral blood flow in a patient are also described.

The invention relates to a brain vascular blood circulation dynamic analysis method and the apparatus thereof. According to the cerebral circulation vascular bed anatomical model, an equivalent network model which comprises 12 pipeline units simulating the brain circulation blood dynamics is built, and the relevant parameter calculation formulas are confirmed, by utilizing the formulas, the flow rate waveform and the value inside the cartid artery, the pressure waveform, the blood pressure of the body, the diameter of the blood vessel, the flow rate waveform and the valve of the vertebral artery and the front, the middle and the rear parts on two sides inside the skull, and the characteristic and the parameter of the cartid artery and each blood vessel section inside the skull can be determined, the apparatus designed by the invention can be performed, the detecting system comprises the vessel diameter detecting of the cartid artery outside the skull, the blood pressure detecting, theblood flow rate detecting of the cartid artery outside the skull, the pressure waveform detecting of the cartid artery outside the skull, and the blood flow rate detecting on the artery inside the skull; the control system comprises a control module and a power supply module; the calculation and analysis system comprises a host computer, a peripheral equipment, and an analog-digital converter, the invention can fully analyze the brain circulation dynamic characteristic, thereby having notable effect on the early stage and the ultra early stage diagnosis and therapy of the brain vascular illness.

Devices and methods for treatment of a patient's vasculature with some embodiments configured for delivery with a microcatheter for treatment of the cerebral vasculature of a patient. Some embodiments may include a permeable shell configured to occlude blood flow therethrough.

The invention discloses a preparation and application of macleyine and other medicine preparation extract from plants, its character lies in: it extracts macleyine with purity of 98% from bloodroot, and part of barberry family and buckthorn plants, and produces solid preparation, injection preparation compound with medicine accessories, the product can be used for curing heart and brain vessel diseases, and AD sufferer, at the same time, the product also has functions of analgesia, anticholinesterase functions and it can advances the bile secretion, and so on.

Patients having diminished circulation in the cerebral vasculature as a result of cardiac arrest or from other causes are treated by flowing an oxygenated medium through an arterial access site into the cerebral vasculature and collecting the medium through an access site in the venous site of the cerebral vasculature. In addition to oxygenation, the recirculating blood may also be cooled to hypothermically treat and preserve brain tissue. Isolation and cooling of cerebral vasculature in patients undergoing aortic and other procedures is achieved by internally occluding at least the right common carotid artery above the aortic arch. Blood or other oxygenated medium is perfused through the occluded common carotid artery(ies) and into the arterial cerebral vasculature. Usually, oxygen depleted blood or other medium leaving the cerebral vasculature is collected, oxygenated, and cooled in an extracorporeal circuit so that it may be returned to the patient.

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.

A cerebral stroke early-warning and brain blood vessel health management system comprises a cerebral stroke early-warning and brain blood vessel health management system body, wherein the cerebral stroke early-warning and brain blood vessel health management system body comprises a front-end detecting unit, a danger degree assessment unit and a data interface unit, wherein the front-end detecting unit comprises an entering module and an information registration module. The danger degree assessment unit comprises a detection module, a data acquisition module and a calculation and analysis module, the detection module comprises an electrocardiograph detection module, a pressure detection module and an ultrasonic Doppler blood flow speed detection module, the data acquisition module comprises an A/D conversion module and a digital Doppler signal detecting and taking module, the calculation and analysis module comprises software special for brain blood vessel hemodynamics analysis and a main computer, and the ultrasonic Doppler blood flow speed detection module and the digital Doppler signal detecting and taking module are connected with the main computer. The cerebral stroke early-warning and brain blood vessel health management system is simple in operation and short in detection time and has smaller dependence on technologies of operators.

A system for treating a medical condition in a living body, comprising two subsystems, an implant subsystem and an electrical stimulation unit subsystem. The implant subsystem comprises at least one electrostimulation module, contains at least one electrically conductive electrode and, preferably, an anchoring member. The electrical stimulation unit, adapted for producing and controlling electrical waveforms, is connected to the electrodes. The implant subsystem is implanted adjacent to at least one of the following structures: the carotid sinus nerve, aortic nerve, common carotid artery, external carotid artery, internal carotid artery, carotid artery bifurcation, carotid body, aortic body or aortic arch receptors. The electrical stimulation unit is maintained outside the patient's body and is adapted to program, generate, control and deliver the electrical waveform via a wired or a wireless connection to the implant subsystem, thereby stimulating the structure it is adjacent to and treating the medical condition.

Compositions and methods for preventing, reducing, or delaying decline in one or more of cognitive function, motor function, cerebrovascular function, or behavior in animals, particularly geriatric animals, are disclosed. The compositions and methods utilize medium chain triglycerides.