218 results about "Electrode location" patented technology

A medical system for finding and displaying the location of electrodes within the body. The electrodes may be used to measure the voltage on the heart wall and display this as an activation map on a geometry representing the heart chamber.

Systems and methods to assist in locating the focus of an atrial fibrillation include the association of atrial fibrillation cycle length values and statistics relating thereto with temporal locations on an electrogram of a given electrode, and/or the coordination of electrode locations with respective the spectral analyses of electrogram signals and further parameters and statistics relating thereto. Ablation therapy can proceed under guidance of such information.

A mapped location of one or more electrodes within an electrical mapping volume is superimposed onto an ultrasound image corresponding to the electrical mapping volume.

Described herein are systems, devices and methods for guiding placement of electrodes, and particularly ECG electrodes on a patient. A picture of the patient's body the patient can be analyzed to determine where on the patient's body to place electrodes according to a predetermined, conventional or standard placement pattern. The methods, devices and systems may then guide a user in positioning or correcting the position of electrodes on the patient. For example, an image of the patient may be provided showing the correct position of the electrodes, which may act as a patient-specific map or guide. The electrode placement positions can correspond to conventional or standard 12-lead ECG electrode positions.

A system according to the present invention provides a portable, non-invasive device adapted to deliver electrical stimulation to a brain, such as to treat tinnitus. Such system is preferably a head-worn system configured to provide transcranial direct current electrical stimulation (tDCS) to a patient, where a therapy based at least partially thereon may be self-administered by the patient. tDCS is a non-invasive method of brain stimulation to treat tinnitus, or other neurological indications, that may provide significant relief. Methods according to the present invention include preferably brief sessions of anodal tDCS to assist in determining adequate electrode location and stimulus intensity by producing transient decreases in tinnitus intensity. Methods may also or alternatively include a number of sessions of cathodal tDCS at a confirmed electrode location and stimulus intensity to provide sustained tinnitus relief. Methods may also or alternatively include a number of maintenance sessions to prolong the sustained relief.

The sound processor and method uses a model of basilar membrane motion to select stimuli, based upon the predicted motion which the acoustic signal presented would produce in an acoustically excited normally hearing cochlea. The filter; used, in contrast to single channel per electrode approaches, cover multiple channels and overlap with each other. Consequently the stimuli presented produce a neural excitation pattern which approximates the spatio-temporal travelling wave observed on the basilar membrane in an acoustically excited normally hearing cochlea. Preferably, the predicted electrode stimuli are based upon the instantaneous predicted amplitude of the electrode location.

An electrode for use on a medical device is disclosed. The electrode may have a main body of electrically conductive material extending along an axis and having a proximal end and a distal end. The body may be configured to emit electrical energy in accordance with a predefined diagnostic or therapeutic function. The body may have a groove disposed over an outermost surface of the body. The electrode may also include a magnetic resonance imaging (MRI) tracking coil disposed in said groove. The MRI tracking coil may comprise electrically insulated wire, for example. A catheter including an electrode, as well as a method for determining the location of an electrode, are also disclosed.

Ultrasound imaging methods and systems for assisting a clinician in configuring the operation of a pacemaker and for determining an optimal site for the pacemaker electrode are presented. The methods and systems provide a toolbox for analyzing and optimizing the effectiveness of the pacemaker and proposed electrode sites. The method includes a function which evaluates one or more electrode sites and pacemaker configurations. The function may be based, for example, on the activation voltage of the pacemaker, on an estimate of the volume of blood ejected from the heart and/or on the cardiac dysynchrony. The ejection volume and the dysynchrony may be estimated using an imaging cardiac catheter ultrasound transducer array and ultrasound unit.

A method for accurate localization and visualization of implanted electrodes, such as implanted intracranial electrodes, is provided. More particularly, a realistic representation of intracranial electrode positions on patient-specific post-implantation MRI brain renderings is obtained. The resulting computer models provide an accurate depiction of electrode locations on three-dimensional brain renderings that are suitable for use in surgical planning of resection boundaries around, for example, epileptic zones. Electrodes placed inter-hemispherically are also visible with this method. In addition, a method for creating electrode “shadows” cast upon the brain model surface is provided. These electrode shadows are useful for estimating cortical areas sampled by iEEG and for locating electrodes that may straddle sulci and contact two adjacent cortical gyri.

Methods and apparatus are provided for receiving, detecting and transmitting geophysical data from a plurality of electrodes placed in the soil utilizing a dynamically reconfigurable wireless control unit that is located on each electrode. Data from the control units is transmitted by a wireless signal to a centralized data processor for analysis. Control data is provided from a central control processor to the control unit by wireless transmission. The control unit, which is positioned, includes a multi-channel radio frequency transmitter/receiver and a processor to actuate relays and record data returns from the measured substrate soil for transmission to the central data processor. The control unit incorporates a changeable code or address to unambiguously identify itself, and its spatial relationship to other electrodes, to the central data processor and the central control processor. The control units are equipped with a GPS positioning device to allow for automatic transmission of electrode location and for electrode placement without a manual survey being required.

A varactor on a substrate is provided. The varactor comprises a bottom electrode, an upper electrode, a first dielectric layer and a conductive layer. The bottom electrode has several doped regions arranged in the substrate as an array with several rows and several columns, wherein the doped regions in adjacent columns are arranged alternatively. The upper electrode is located over the substrate and the upper electrode is composed of several electrode locations and has several openings, wherein each opening exposes the corresponding doped region. Furthermore, each electrode location is surrounded by three doped regions. The first dielectric layer is located between the substrate and the upper electrode. The conductive layer is located over the upper electrode, wherein the conductive layer and the upper electrode are isolated from each other and the conductive layer and the doped regions are electrically connected to each other.

Embodiments of the present disclosure include a system for determining an error associated with an electrode disposed on a medical device. The system comprises a processor and a memory storing instructions on a non-transitory computer-readable medium. The instructions are executable by the processor to receive an electrode signal from the electrode disposed on the medical device. The instructions are further executable by the processor to receive a plurality of other electrode signals from a plurality of other electrodes disposed on the medical device. The instructions are further executable by the processor to determine that the electrode signal received from the electrode disposed on the medical device is an outlier in relation to the plurality of other electrode signals from the plurality of other electrodes disposed on the medical device, based on a comparison between the electrode signal and the plurality of other electrode signals.

An electric stimulator for heart, brain, organs and general cells with a possibly random shape and position of electrodes which enhances its performance for breaking the symmetry. Two types of electrodes are introduced: type-1, or active electrodes are similar to prior art, while type-2, or passive electrodes have not been used in this context. Passive electrodes are electrically insulated, being unable to inject current in the surrounding medium, but they are capable of shaping the electric field, which has consequence on the path of the stimulating currents injected by type-1 electrodes. The invention also discloses a supercapacitor-type passive electrode of type-2, which maximizes the stored charge on the electrode—therefore increasing the electric field magnitude created by it.

The invention relates to an electrocardiogram limb lead module and a twelve lead electrocardio collection and transmission system. The limb lead module comprises a recording and transmission module and an electrode lead part, wherein the recording and transmission module is integrated in a box and used for recording electrocardio signals which are collected through the electrode lead part and transmitting the electrocardio signals to the outside; the electrode lead part comprises four limb lead wires and four electrodes which are correspondingly connected with the lead wires respectively; the four limb lead wires are connected with the recording and transmission module and guided out from the edge of the box respectively. According to the electrocardiogram limb lead module and the twelve lead electrocardio collection and transmission system, an electrocardiogram electrode location is exactly determined, electrocardio signals of the front portion of the heart and the limbs are detected simultaneously, detected signals can be transmitted to a terminal end expediently, and electrocardio of the human body can be quickly diagnosed in real time; the module is suitable for ordinary people to wear in non-medical time, simple in structure, convenient to operate, comfortable, durable and reliable in measurement, and the module can be used as a leading end data acquisition module of a medical Internet system.

The neural interface system of the preferred embodiments includes an electrode array having a plurality of electrode sites and a carrier that supports the electrode array. The electrode array is coupled to the carrier such that the electrode sites are arranged both circumferentially around the carrier and axially along the carrier. A group of the electrode sites may be simultaneously activated to create an activation pattern. The system of the preferred embodiment is preferably designed for deep brain stimulation, and, more specifically, for deep brain stimulation with fine electrode site positioning, selectivity, tunability, and precise activation patterning. The system of the preferred embodiments, however, may be alternatively used in any suitable environment (such as the spinal cord, peripheral nerve, muscle, or any other suitable anatomical location) and for any suitable reason.