98results about "Epicardial electrodes" patented technology

The present invention is related to an extracardiac temporary pacemaker designed for cardiac pacing, particularly for high-grade atrioventricular block and prolonged sinus pauses. The device integrates a pacemaker unit with battery within a transcutaneous patch, featuring thin, needle-like electrodes that penetrate the intercostal muscles to reach the epicardial surface of the heart. The design allows for rapid, significantly reducing the risk of complications associated with traditional intravascular pacemakers and providing a quick, safe, and more efficient solution for temporary cardiac pacing.

An implantable lead for use with an implantable medical device (IMD) includes a tubular lead body having a proximal portion including a proximal end, a distal portion including a distal end opposite the proximal end, and an intermediate portion between the proximal portion and the distal portion. A helical electrode extends distally from the distal end of the tubular lead body. At least one atrial electrode is disposed in the intermediate portion of the tubular lead body. At least one electrical conductor extends through the tubular lead body and is mechanically and electrically coupled to the helical electrode and the at least one atrial electrode. The intermediate portion may have a pre-formed bend configured to urge the at least one atrial electrode against a surface of the right atrium when the lead is implanted. A distal pre-formed bend located in the distal portion of the tubular lead body may be configured to bias a plurality of pacing / sensing electrodes towards a surface of a right ventricle. A distal pre-formed bend located in the distal portion of the tubular lead body may be configured to bias the helical electrode and at least one pacing / sensing against a surface of a right ventricle.

A system for characterization of an organic medium surrounding an electrode, comprising: two or more electrodes, wherein at least one electrode of the two or more electrodes is configured to be insertable in tissue; and an analysis unit connectable to the two or more electrodes and configured to apply a measurement signal to the two or more electrodes, wherein the analysis unit is further configured to determine an impedance between the two or more electrodes based on the measurement signal and characterize the organic medium surrounding the at least one electrode based on an amplitude and / or phase of the impedance or real part and / or imaginary part of the impedance.

The present invention relates to a fixation tool for clamping and rotating a lead terminal pin of a medical implantable cardiac lead. The fixation tool comprises a handle portion and a jaw portion, wherein opposing inner surfaces of a pair of jaws of the jaw portion are shaped to form a cavity system between the pair of jaws, the cavity system comprising a first cavity located proximal to an opening at the distal end of the jaw portion and having a first width between the opposing inner surfaces and being shaped to clamp a first lead terminal pin of a first diameter, and a second cavity located proximal to the first cavity and having a second width between the opposing inner surfaces, smaller than the first width and adapted to clamp, together with the first cavity, a second lead terminal pin of a second diameter larger than the first diameter.

The invention relates to a device for assisting in the handling and implantation of at least one electrode support(s) for a cardiac device, in particular a cardiac pacing device, said at least one electrode support(s) comprising a distal end and a proximal end, the proximal end comprising at least one connector configured to be in electrical connection with at least one portion of the distal end, characterized in that said device comprises: - a body, preferably one-piece, configured to cover at least one portion of said at least one connector, - at least one receiving portion for a means of temporary electrical connection, such as a crocodile clip, said at least one receiving portion being electrically conductive, - at least one connection element in electrical connection with said at least one receiving portion, said at least one connection element being in controlled tangential contact with said at least one connector.The invention also relates to the use of this device for the transfer of electrical signals into or from a cardiac stimulation device electrode, as well as a method for assembling this device.

The present invention relates to an improvement in the technical field of electromedical electrode assemblies. As an improvement, an electromedical electrode assembly (1) is proposed, which comprises at least one implantable cardioversion electrode (2) consisting of an electrically conductive surface formation (3) that is flexible, flat in the undeformed use position, and configured for surface contact with target tissue.

The invention relates to an access and occluder device, and in particular a heart valve regurgitation drum and optional closure disk and / or tubular stent to manage and provide levels of intentional regurgitation within a transcatheter heart valve replacement, and in particular, an orthogonally delivered transcatheter prosthetic heart valve having a first inner flow control component / valve, a second inner regurgitation control component, and an outer annular support frame having compressible wire cells that facilitate folding flat along the z-axis and compressing the valve vertically along the y-axis, or orthogonally to the central axis of the flow control component, allowing a very large diameter valve to be delivered and deployed to the tricuspid valve from the inferior vena cava or superior vena cava, or trans-atrrally to the mitral valve, the valve having a height of about 5-60mm and a diameter of about 25-80mm, without requiring an oversized diameter catheter and without requiring delivery and deployment from a catheter at an acute angle of approach.

In some examples, a tether assembly of a delivery system includes an inner retainer and an outer retainer defining an aperture. A tethered assembly of a delivery system includes an inner retainer and an outer retainer defining an aperture including a container configured to receive an attachment member of a medical device, a passage, and a groove. The inner retainer is movable within the recess between a second position in which the passage is dimensioned to receive the attachment member and a first position in which the passage is dimensioned to prevent passage of the attachment member. The tether handle assembly defines a channel, a force transmitter within the channel, a slidable member partially received within a first end of the channel, and a button partially received within a second end of the channel.

A pacemaker device (400) including a pacemaker portion (402) and an integrated connector (2904). The pacemaker device (400) includes a housing assembly (3316, 4300) defining a plurality of housings (3302, 3304, 4302, 4304, 4306, 4308) for containing pacing electronics, battery material and a connector (2904, 4904). The connector (2904, 4904) is enclosed within the housing (3304, 4304, 4308) and is configured to receive a lead (3202) which is electrically connectable with the pacing electronics. The pacemaker device (400) may include a leadless pacemaker (102) inserted in the housing assembly (3316) configured to convert the leadless pacemaker (102) into a leaded configuration. The leadless pacemaker (102) may be removably attached from the pacemaker device (400) and replaced with another leadless pacemaker (102).

An implantable medical device (IMD) including a housing having an outer surface and extending between a first housing end and a second housing end. The IMD includes an electrode coupled to the housing and positioned at or adjacent to the first housing end, and the electrode has an electrode surface. The IMD includes a surface area on the electrode surface or adjacent to the electrode. The surface area includes micropores and channels interconnecting the micropores.

The present disclosure relates to optoelectronic devices and methods for optical epicardial pacing and endoscopic delivery devices and methods for translational photostimulation.

An exemplary device includes an elongated housing, a first electrode and a second electrode, and a signal generation circuitry system. The housing can be implanted within a single first chamber of the heart. The first electrode extends distally from a distal end of the elongated housing. The distal end of the first electrode can penetrate into the wall tissue of a second chamber of the heart. The second electrode, extending distally from the elongated housing, is configured to flexibly maintain contact with the wall tissue of the first chamber without penetrating the wall tissue of the first chamber. The signal generation circuitry can be located within the elongated housing and coupled to the first and second electrodes. The signal generation circuitry system can deliver cardiac pacing to the second chamber via the first electrode and to the first chamber via the second electrode.

We provide implantable medical devices, particularly subcutaneous devices. [Solution] The device, which can be implanted subcutaneously, comprises a housing, a clip attached to the upper surface of the housing, an electrode, and a circuit within the housing that is electrically in communication with the electrode. The clip includes an upper part, the upper part of the clip is configured to be pressed down onto the xiphoid process and / or the sternum in order to fix the device to the xiphoid process and / or the sternum, with the xiphoid process and / or the sternum between the upper part of the clip and the housing.

An implantable medical device delivery system includes a delivery catheter including an elongated body having a first portion defining a first lumen and a second portion defining a second lumen. An angle is defined between first and second axes defined by the first and second portions, respectively. The second axis is directed toward a left ventricular (LV) apex of a heart of a patient when the first axis is directed toward a CS. The first portion or elongated element can extend into the CS to anchor the delivery catheter relative to an orientation of the CS.

A method of pacing a heart includes implanting a subcutaneously implantable device on a xiphoid process and / or a sternum of a patient. The subcutaneously implantable device includes a housing, a prong extending away from the housing, and a first electrode at a distal end of the prong. The method further includes contacting a Manicka Zone of Pacing on an anterior surface of the heart with the first electrode on the distal end of the prong. The Manicka Zone of Pacing is defined as an area of the heart extending 3 centimeters (1.1811 inches) laterally outward from either side of a left anterior descending artery of the heart. A pacing signal is delivered to the Manicka Zone of Pacing of the heart through the first electrode. A right ventricle and a left ventricle of the heart are synchronously paced with the pacing signal received in the Manicka Zone of Pacing.

The invention provides a photoelectric neural electrode and a preparation method and application thereof. The photoelectric neural electrode sequentially comprises a substrate, an electrode layer and a heterostructure photoelectric active layer which are stacked from bottom to top, wherein the heterostructure photoelectric active layer sequentially comprises a p-type light absorption donor layer, a function regulation and control layer and an n-type electron acceptor layer which are stacked from bottom to top; the function regulation and control layer, the p-type light absorption donor layer and the n-type electron acceptor layer form a cascading relation or a bridging relation on an energy band, and the function regulation and control layer is a channel capable of providing in-plane direction charge transmission. The functional regulation and control layer is introduced between the donor layer and the acceptor layer to construct an energy band synergistic heterostructure, so that the photoelectric neural electrode prepared based on the heterostructure can realize higher photocurrent density and charge injection density, has quick response and excellent water phase stability, can realize bidirectional charging and discharging, and has a wide application prospect. The requirements of a nerve interface on sensitivity, time sequence and stability can be met, and the specific biological application prospect is achieved.

This disclosure describes a system comprising an electrical lead, an implantable medical device, wherein the electrical lead is configured to be electrically connected to the implantable medical device, and wherein the implantable medical device is configured to deliver an electrical therapy to tissue of a patient via the electrical lead, and an expandable member configured to be disposed over the implantable medical device and an excess portion of the electrical lead. The expandable member comprises a first portion defining an inner volume configured to retain the implantable medical device and the excess portion of the electrical lead, and a second portion connected to a proximal end of the first portion, the second portion configured to be disposed over at least a part of the first portion of the expandable member, wherein the expandable member is configured to control a length of the electrical lead within vasculature of the patient.

The subcutaneously implantable device includes a housing, a clip attached to the housing, prongs, and an electrode. The clip is configured to secure the device to muscle, bone, and / or a first tissue. The prongs have a base attached to the housing, arms extending from the base including opposing ends of the arms of the prongs to define a first plane perpendicular to the horizontal plane of the housing, and contact portions configured to contact an organ, nerve, first tissue, and / or second tissue. The contact portions are angled away from the first plane. The electrodes are located at the contact portions of the prongs. The electrodes are configured to contact the organ, nerve, first tissue, and / or second tissue. Circuitry is within the housing.

Devices and methods of use for introduction and implantation of an electrode structure for baroreflex activation therapy, as part of a minimally invasive implant technique. An implantable baroreflex activation system includes a control system having an implantable housing, an electrical lead, attachable to the control system, and an electrode structure. One or more of the electrical lead or electrode structure may include elements to improve fixation at a target implant location. Improvements to delivery tools associated with implant are also described.

The invention relates to a screwing stylet for improving torque transfer from a physician's hand to a lead tip (e.g., helix) of a lead device. A lead tip is provided to facilitate handling and a screwdriver functionality of the screwing stylet is provided to improve torque transfer to the lead tip of the lead device for better control of a puncturing process. The screwing stylet can be engaged directly with the tip of the lead device, thereby allowing a direct and efficient torque transfer to the fixed helix at the tip.

A leadless pacemaker device configured to provide for an intra-cardiac pacing includes a processing circuitry configured to generate ventricular pacing signals for stimulating ventricular activity at a ventricular pacing rate and a sensor configuration configured to receive a sense signal over a multiplicity of heart cycles. The processing circuitry is configured to derive, from signal portions of the sense signal relating to the multiplicity of heart cycles, a combined signal portion and to analyze the combined signal portion for obtaining information relating to an atrial event. The processing circuitry is configured to sum a predefined number of signal portions relating to different heart cycles to obtain the combined signal portion. The leadless pacemaker device allows, in particular, for a reliable detection of signals relating to an atrial activity and the use of such signals for controlling a ventricular pacing rate for a ventricular pacing.

The present invention relates to a myocardial spectrometer probe comprising at least two separate light guides (120A, 120B) insertable into tissue, wherein a first light guide (120A, 120B) is arranged to deliver light and a second light guide (120A, 120B) is arranged to collect light, and wherein the first light guide (120A, 120B) and the second light guide (120A, 120B) are arranged separately from each other.

A system to access an epicardium of a heart is disclosed. The system includes a stimulation probe and a controller. The stimulation probe is advanced toward a pericardium and provides an electrical stimulation signal of a selected amplitude and frequency. The controller is coupled to the to the stimulation probe. The controller provides the electrical stimulation signal of the selected amplitude and frequency to the stimulation probe and adjusts the selected amplitude, frequency, or both of the electrical stimulation signal based on a detected stimulation of the heart in response to the electrical stimulation signal.

A cardiac pacing system that includes an a pulse generator configured to generate appropriate therapeutic electrical pulses for pacing a heart of a patient from the region of an intercostal space at the cardiac notch, where the therapeutic electrical pulses have one or more of amplitudes, pulse widths, frequencies, or electrode polarities specified by therapy protocols for pacing one or more atria or ventricles of the heart of the patient from the region of the intercostal space at the cardiac notch. The system also includes bifurcated lead having a plurality of cores configured to be advanced in different directions and configured to transmit the therapeutic electrical pulses generated by the pulse generator to pace the heart of the patient from the region of an intercostal space at the cardiac notch.

This document describes implantable medical devices and methods of using such devices. The implantable medical devices include a cardiac lead sized for insertion in a cardiac cavity, the cardiac lead having a distal end and a proximal end and a lead body extending therebetween, a heat exchange module disposed at the distal end of the lead body, the heat exchange module comprising an enclosure having a first surface and a second surface, and one or more temperature sensors located within the enclosure.

The present invention is a high resolution, multi-function, conformal electronics device generally having a flexible and stretchable, high-density electrode array, integrated with a catheter (e.g., balloon catheter) for mapping, ablating, pacing and sensing of cardia tissue associated with heart arrhythmias. The active sensing electrode array can acquire diagnostic information including electrical (e.g., electrograms), mechanical (e.g., strain measurements), impedance (e.g., resistance), metabolic (e.g., pH or NADH measurement) from the underlying heart tissue surface with which it is in contact. The electrode array may be designed to be of various sizes and shapes to conform to the targeted cardiac tissue architecture (e.g. atrial, ventricle, right ventricular outflow tract, coronary sinus, pulmonary veins, etc.) corresponding to the specific type of cardiac arrhythmia. The present invention can precisely locate the source of arrhythmia as described above and deliver therapy from the same electrode array. This is achieved using a capacitive sensing electrode array that can not only monitor but also deliver electrical stimulation.

A system for displaying a representation of an instrument is disclosed. The representation of the instrument may be displayed relative to a representation of the patient. The representation of the patient may be fitted in real time to represent a pose or one or more parts of the patient relative to one or more parts of the patient and / or relative to the instrument.

Systems, devices, and methods for providing therapy to a heart of a patient are disclosed. The system includes an implantable device to be implanted proximate the heart of the patient. The implantable device includes at least one sensing electrode configured to sense electrical activity of the heart, at least two pacing electrodes configured to deliver electrical stimulation energy to tissue of the heart, and a controller including one or more algorithms. The one or more algorithms are executable to determine a pacing strategy to terminate atrial fibrillation.

A method of improving electrical conduction across an impaired region of a tissue (e.g., myocardial tissue), includes applying an electrically conductive wiring (e.g., carbon nanotube fibers) across the impaired region. The electrically conductive wiring can become associated with non-impaired regions of the tissue on opposite sides of the impaired region by suturing. The method can also be utilized to treat or prevent cardiac arrhythmia in a subject (e.g., ventricular arrhythmia). The electrically conductive wiring includes carbon nanotubes, such as carbon nanotube fibers. Such electrically conductive wiring can be used to transmit electrical signals to a tissue or sense electrical signals from the tissue. Suture threads including carbon nanotubes, such as carbon nanotube fibers, are provided.

In various examples, a guidewire for temporary pacing of tissue includes an elongate core wire and a coil disposed along at least a portion of a length of the core wire. The coil is disposed radially outwardly from and around the core wire, wherein a core axis and a coil axis are substantially aligned. At least one electrode is disposed along the guidewire and includes an uninsulated portion of the core wire disposed within an electrode section of the coil. A spacing between adjacent windings of the electrode section of the coil is configured to allow a stimulation pulse to travel from the uninsulated portion of the core wire, through the spacing between the adjacent windings of the electrode section, and to the tissue in order to stimulate the tissue.