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420 results about "Carotid arteries" patented technology

The carotid arteries are major blood vessels in the neck that supply blood to the brain, neck, and face. There are two carotid arteries, one on the right and one on the left. In the neck, each carotid artery branches into two divisions: The internal carotid artery supplies blood to the brain.

Electrode designs and methods of use for cardiovascular reflex control devices

Devices, systems and methods by which the blood pressure, nervous system activity, and neurohornonal activity may be selectively and controllably reduced by activating baroreceptors. A baroreceptor activation device is positioned near a baroreceptor, preferably in the carotid sinus. The baroreceptor activation device may utilize electrodes to activate the baroreceptors. The electrodes may be adapted for connection to the carotid arteries at or near the carotid sinus, and may be designed to minimize extraneous tissue stimulation.
Owner:CVRX

Techniques for applying, configuring, and coordinating nerve fiber stimulation

Apparatus is provided including an implantable sensor, adapted to sense an electrical parameter of a heart of a subject, and a first control unit, adapted to apply pulses to the heart responsively to the sensed parameter, the pulses selected from the list consisting of: pacing pulses and anti-arrhythmic energy. The apparatus further includes an electrode device, adapted to be coupled to a site of the subject selected from the list consisting of: a vagus nerve of the subject, an epicardial fat pad of the subject, a pulmonary vein of the subject, a carotid artery of the subject, a carotid sinus of the subject, a coronary sinus of the subject, a vena cava vein of the subject, a right ventricle of the subject, and a jugular vein of the subject; and a second control unit, adapted to drive the electrode device to apply to the site a current that increases parasympathetic tone of the subject and affects a heart rate of the subject. The first and second control units are not under common control. At least one of the control units is adapted to coordinate an aspect of its operation with an aspect of operation of the other control unit. Other embodiments are also described.
Owner:MEDTRONIC INC

Apparatus and methods for reducing embolization during treatment of carotid artery disease

Methods and apparatus are provided for removing emboli during an angioplasty, stenting or surgical procedure comprising a catheter having an occlusion element, an aspiration lumen, and a blood outlet port in communication with the lumen, a guide wire having a balloon, a venous return sheath with a blood inlet port, and tubing that couples the blood outlet port to the blood inlet port. Apparatus is also provided for occluding the external carotid artery to prevent reversal of flow into the internal carotid artery. The pressure differential between the artery and the vein provides reverse flow through the artery, thereby flushing emboli. A blood filter may optionally be included in-line with the tubing to filter emboli from blood reperfused into the patient.
Owner:WL GORE & ASSOC INC

Parasympathetic pacing therapy during and following a medical procedure, clinical trauma or pathology

ActiveUS20060206155A1Increase parasympathetic toneReduced responseSpinal electrodesHeart stimulatorsParasympathetic ganglionPathology diagnosis
A treatment method is provided, including identifying a subject as one who is selected to undergo an interventional medical procedure, and, in response to the identifying, reducing a likelihood of a potential adverse effect of the procedure by applying an electrical current to a parasympathetic site of the subject selected from the group consisting of: a vagus nerve of the subject, an epicardial fat pad of the subject, a pulmonary vein of the subject, a carotid artery of the subject, a carotid sinus of the subject, a coronary sinus of the subject, a vena cava vein of the subject, a jugular vein of the subject, a right ventricle of the subject, a parasympathetic ganglion of the subject, and a parasympathetic nerve of the subject.
Owner:MEDTRONIC INC

Apparatus and methods for reducing embolization during treatment of carotid artery disease

Methods and apparatus are provided for removing emboli during an angioplasty, stenting or surgical procedure comprising a catheter having an occlusion element, an aspiration lumen, and a blood outlet port in communication with the lumen, a guide wire having a balloon, a venous return catheter with a blood inlet port, and tubing that couples the blood outlet port to the blood inlet port. Apparatus is also provided for occluding the external carotid artery to prevent reversal of flow into the internal carotid artery. The pressure differential between the artery and the vein provides reverse flow through the artery, thereby flushing emboli. A blood filter may optionally be included in-line with the tubing to filter emboli from blood reperfused into the patient.
Owner:WL GORE & ASSOC INC

Techniques for reducing pain associated with nerve stimulation

Apparatus is provided including an electrode device and a control unit. The electrode device is configured to be coupled to a site of a subject selected from the group consisting of: a vagus nerve, an epicardial fat pad, a pulmonary vein, a carotid artery, a carotid sinus, a coronary sinus, a vena cava vein, a right ventricle, a right atrium, and a jugular vein. The control unit is configured to drive the electrode device to apply to the site a current in at least first and second bursts, the first burst including a plurality of pulses, and the second burst including at least one pulse, and set (a) a pulse repetition interval (PRI) of the first burst to be on average at least 20 ms, (b) an interburst interval between initiation of the first burst and initiation of the second burst to be less than 10 seconds, (c) an interburst gap between a conclusion of the first burst and the initiation of the second burst to have a duration greater than the average PRI, and (d) a burst duration of the first burst to be less than a percentage of the interburst interval between, the percentage being less than 67%. Other embodiments are also described.
Owner:MEDTRONIC INC

Apparatus and methods for reducing embolization during treatment of carotid artery disease

Methods and apparatus are provided for removing emboli during an angioplasty, stenting or surgical procedure comprising a catheter having an occlusion element, an aspiration lumen, and a blood outlet port in communication with the lumen, a guide wire having a balloon, a venous return catheter with a blood inlet port, and tubing that couples the blood outlet port to the blood inlet port. Apparatus is also provided for occluding the external carotid artery to prevent reversal of flow into the internal carotid artery. The pressure differential between the artery and the vein provides reverse flow through the artery, thereby flushing emboli. A blood filter may optionally be included in-line with the tubing to filter emboli from blood reperfused into the patient.
Owner:WL GORE & ASSOC INC

Technique for blood pressure regulation

An implantable device (20) uses the carotid baroreflex in order to control systemic blood pressure. The implant includes sampling and pulse stimulation electrodes (44) preferably located on the carotid sinus nerve branch of the glossopharyngeal nerve, adjacent and distal to the carotid sinus baroreceptors. The stimulators have an external control unit, which communicates with the implant for determining appropriate operational parameters, and for retrieving telemetry information from the device's data bank. Typically two internal devices are implanted, one at each side of the patient's neck.
Owner:BRAINSGATE LTD

System and method for transvascularly stimulating contents of the carotid sheath

InactiveUS7925352B2Ultrasound therapySpinal electrodesNervous systemCarotid sheath
Methods and systems are disclosed for stimulating contents of the carotid sheath using an intravascular pulse generator and lead. The lead carries an energy delivery device such as an electrode, which is anchor within the portion of the internal jugular vein that is disposed within the carotid sheath. The energy delivery device is energized to transvenously direct energy to target contents of the carotid sheath external to the internal jugular vein. Such target contents may include nervous system elements associated with the carotid sinus baroreceptors, the carotid sinus nerve and associated nerve branches, and or the vagus nerve and associated nerve branches. The system may be used to control blood pressure and / or to lower heart rate and may be suitable for treatment of hypertension, heart failure, or other conditions.
Owner:NUXCEL2 LLC

System and method for transvascularly stimulating contents of the carotid sheath

InactiveUS20100023088A1Ultrasound therapySpinal electrodesNervous systemCarotid sheath
Methods and systems are disclosed for stimulating contents of the carotid sheath using an intravascular pulse generator and lead. The lead carries an energy delivery device such as an electrode, which is anchor within the portion of the internal jugular vein that is disposed within the carotid sheath. The energy delivery device is energized to transvenously direct energy to target contents of the carotid sheath external to the internal jugular vein. Such target contents may include nervous system elements associated with the carotid sinus baroreceptors, the carotid sinus nerve and associated nerve branches, and or the vagus nerve and associated nerve branches. The system may be used to control blood pressure and / or to lower heart rate and may be suitable for treatment of hypertension, heart failure, or other conditions.
Owner:NUXCEL2 LLC

Devices and Methods for Screening of Vagal Nerve Stimulation

InactiveUS20100286553A1Good effectElectroencephalographySensorsRight carotid sheathSacral nerve stimulation
The present disclosure provides systems and methods for screening vagus nerve stimulation to determine the potential efficacy of permanent stimulation systems. In one aspect, the system includes temporary electrode assemblies adapted for temporary placement on or in the body adjacent the vagus nerve. In another aspect, a method is provided to place a stimulating electrode adjacent the posterior of the carotid sheath.
Owner:DECAF

Endovascular system for the treatment of stenoses of the carotid and catheter for this system

A catheter, in particular for endovascular applications, including a long and flexible, hollow, tubular body having an insertion end and a connection end intended to remain outside the body. The catheter includes in the insertion end at least two elements which are expandable / contractible by means of external operations. Those elements are located at a distance from each other, one upstream and the other downstream of a given section of a vessel. With the catheter it is possible to operate in the section between the two expandable elements and, if necessary, in the intermediate arterial branch which, on account of the two elements upstream and downstream, will have a zero flow.
Owner:INVATEC +3

Implant delivery device

InactiveUS7758624B2Minimize traumaRobust and simple for placementStentsBile ductsMedical treatmentGuide catheter
Disclosed is a system for delivering self-expanding stents to stenting sites within the body, which minimizes trauma to the affected tissue of the patient yet, at the same time, offers the medical practitioner a robust and simple system for stent placement. These technical effects are achieved by providing a catheter which receives the stent at its proximal end and guides it to the stenting site. The catheter serves as a guide catheter and has a tapered distal tip from which the stent emerges at the site of stenting. A stent pusher can be used which abuts the proximal end of the stent inside the guide catheter. The tapered tip can be molded and can be integral with the catheter shaft or bonded to it. The guide catheter can include a figurated portion towards its distal tip. The system has particular application to stenting the carotid artery.
Owner:ANGIOMED GMBH & CO MEDIZINTECHNIK KG

Vagal stimulation for anti-embolic therapy

Apparatus (20) for treating a subject (30) suffering from spontaneous atrial fibrillation includes an electrode device (22), adapted to be coupled to a site of the subject (30) selected from the list consisting of: a vagus nerve (24) of the subject (30), an epicardial fat pad of the subject (30), a pulmonary vein of the subject (30), a carotid artery of the subject (30), a carotid sinus of the subject (30), a vena cava vein of the subject (30), and an internal jugular vein of the subject (30), and a control unit (32), adapted to drive the electrode device (22) to apply an electrical current to the site, and to configure the current to maintain the spontaneous AF for at least about 24 hours, so as to modify blood flow within the atria and reduce risk of thromboembolic events.
Owner:MEDTRONIC INC

Parasympathetic stimulation for treating ventricular arrhythmia

Apparatus is provided including an implantable sensor, adapted to sense an electrical parameter of a heart of a subject, and a first control unit, adapted to apply pulses to the heart responsively to the sensed parameter, the pulses selected from the list consisting of: pacing pulses and anti-arrhythmic energy. The apparatus further includes an electrode device, adapted to be coupled to a site of the subject selected from the list consisting of: a vagus nerve of the subject, an epicardial fat pad of the subject, a pulmonary vein of the subject, a carotid artery of the subject, a carotid sinus of the subject, a coronary sinus of the subject, a vena cava vein of the subject, a right ventricle of the subject, and a jugular vein of the subject; and a second control unit, adapted to drive the electrode device to apply to the site a current that increases parasympathetic tone of the subject and affects a heart rate of the subject. The first and second control units are not under common control. At least one of the control units is adapted to coordinate an aspect of its operation with an aspect of operation of the other control unit. Other embodiments are also described.
Owner:MEDTRONIC INC

Methods for flow augmentation in patients with occlusive cerebrovascular disease

InactiveUS6878140B2Enhanced reversal of blood flowControl flowStentsBalloon catheterDiseasePercutaneous angioplasty
The invention provides a method for augmenting circulation in a patient having carotid stenosis. An elongate tubular member is provided having a lumen communicating with a port at a distal end. The tubular member is inserted into a peripheral artery and the distal port is advanced into a first carotid artery substantially free of a lesion where the patient possesses a second carotid artery substantially occluded by a lesion. Blood is perfused into the first carotid artery through the tubular member. Contralateral flow is augmented to improve perfusion to an ischemic region distal to the carotid stenosis. Angioplasty and stenting can be used to open the lesion in the second carotid artery.
Owner:ZOLL CIRCULATION

Techniques for prevention of atrial fibrillation

ActiveUS20070179543A1Prevent electrical remodelingReduce riskSpinal electrodesHeart defibrillatorsInnominate veinBiology
A method is provided, including identifying that a subject is at risk of suffering from atrial fibrillation (AF). Responsively to the identifying, a risk of an occurrence of an episode of the AF is reduced by applying an electrical current to a site of the subject selected from the group consisting of: a vagus nerve, a sinoatrial (SA) node fat pad, a pulmonary vein, a carotid artery, a carotid sinus, a coronary sinus, a vena cava vein, a jugular vein, an azygos vein, an innominate vein, and a subclavian vein, and configuring the current to stimulate autonomic nervous tissue in the site. Other embodiments are also described.
Owner:MEDTRONIC INC

Bilateral Differential Pulse Method For Measuring Brain Activity

A method of measuring human brain activity includes the steps of simultaneously measuring pulses at two locations on a human subject that each receives blood from a different carotid artery that feeds a respective one of left and right hemispheres of the brain of the human subject, determining pulse characteristics from the measured pulses, and evaluating relative left and right hemisphere activity of the brain of the human subject based on the determined pulse characteristics. The method may use dual photoplethysmograhic blood pulse sensors that measure left and right hemisphere activity by determining pulse amplitude difference and time or phase differences between the earlobes while the subject carries out various mental functions. The data from the sensors are processed to provide a measure of brain function and the mental activity of the subject.
Owner:ATLANTIS PARTNERSHIP

Percutaneous Electrical Treatment Of Tissue

InactiveUS20100241188A1Reduce electrical signalWeakening rangeSpinal electrodesHead electrodesElectricityRight carotid sheath
Devices, systems and methods for applying electrical impulse(s) to one or more selected nerves in or around the carotid sheath are described. An electrode assembly is introduced through a percutaneous penetration in a patient to a target location adjacent to, or in close proximity with, the carotid sheath. Once in position, one or more electrical impulses are applied through the electrode assembly to one or more selected nerves to stimulate, block or otherwise modulate the nerve(s) and acutely treat the patient's condition.
Owner:ELECTROCORE

Non-invasive modulation of the autonomic nervous system

InactiveUS20060293719A1Easy accessReduction of urinary hesitancyUltrasound therapyElectrotherapyLaryngospasmDisease
The present invention is directed to methods and apparatus for modulation of the sympathetic-parasympathetic balance by application of heat, carotid and / or ocular message to reduce sympathetic tone or increase parasympathetic tone in a target muscle system to relieve a symptom of urinary hesitancy, shy bladder syndrome, DESD, urinary retention, or laryngeal spasm, as well as to monitor the efficacy of treatments for bladder conditions and to assist in the passage of medical devices through bodily sphincters as well as to treat congestive heart failure.
Owner:THERMARX

Helmet Apparatus and System with Carotid Collar Means On-Boarded

Apparatus for helmeting with carotid collars works in conjunction with a transcranial Doppler, phased array photoacoustic device to transmit a first energy to a region of interest at an internal site of a subject to produce an image and blood flow velocities of a region of interest by outputting an optical excitation energy to said region of interest and heating said region, causing a transient thermoelastic expansion and produce a wideband ultrasonic emission. Systems integrate and register the signals for use in, for example, acute stroke care.
Owner:STEIN STUART +1
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