169results about "Epicardial electrodes" patented technology

A cardiac pacing system that includes an implantable pulse generator and electrical leads that include a lead body portion having a distal end and a proximal end, a connector configured to electrically connect the proximal end of the lead body to the pulse generator, and at least one electrode disposed at the distal end of the lead body for delivering electrical stimulation to a patient's heart, wherein the distal end of the lead body is configured to terminate within the mediastinum of the thoracic cavity of the patient, proximate to the heart.

A medical device configured to deliver a cardiac pacing pulse having a pacing pulse amplitude for delivery to an electrode terminal of the medical device is provided. In some examples, the medical device is configured to pull a latch current during a first portion of the cardiac pacing pulse by an internal adjustable load of the medical device coupled to a low side of a high side switch of a high voltage output circuit of the medical device to maintain the high side switch in an on state. The medical device may be configured to pull a holding current during a second portion of the cardiac pacing pulse to hold the high side switch in an on state. The holding current may be less than the latch current.

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.

An introductory lead system can include a first implantable lead having a first electrode and a second implantable lead having a second electrode guided to an implant site by the first implantable lead. The second electrode can be implanted in a patient's heart at the same implant site as the first electrode or at a second implant site. The introductory lead system can be delivered to one or more implant sites using various methods, including at the Koch triangle for ventricular free wall to atrium (VfA) therapy, at the right ventricular septal wall for dual bundle branch pacing, or in the coronary vasculature for left-sided sensing and pacing.

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.

Method for recovering and stabilizing normal heart rate of patients suffering in or being inclined to having atrial fibrillation, comprising the step of sensing primary electrical pulses generated in the right atrium (1), of generating artificial electrical stimulation pulses coordinated with the sensed pulses and stimulating therewith the portion of the left atrium (9) which is remote from the right atrium (1), whereby increasing the areas of the heart muscles that can be reached during a simulation pulse within a predetermined period of time.

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 present invention provides an electrode wiring connecting apparatus and a temporary pacemaker. The connecting apparatus comprises an electrically conductive block and an insulating bushing; the connecting apparatus is provided with a penetrating channel extending along an axial direction of the connecting apparatus; and the insulating bushing comprises a first sleeve body and a second sleeve body, sleeved on at least a portion of an outer side surface of the first sleeve body. The connecting apparatus further comprises a switching structure, the switching structure comprising a through hole, a trigger body, and a mating body; the through hole is formed in the first sleeve body and is in communication with the penetrating channel, and the trigger body is partially disposed in the through hole, and can move along a direction towards or away from the axis of the penetrating channel, so as to cause the switching structure to switch between a first state and a second state; the mating body is disposed between the first sleeve body and the second sleeve body, and comprises an electrically conductive elastic piece and an electrically conductive engagement piece, the electrically conductive elastic piece being located at the through hole and making contact with the trigger body; and at least a portion of the trigger body of the switching structure is an electrically conductive trigger body. The connecting apparatus can adapt to different electrode wiring, so that the application range of a temporary pacemaker provided with the connecting device is wide.

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.

An implantable medical device (1) for implantation into a patient comprises a body (100, 150) having a distal end (101, 151) and an electrode device (14) for at least one of emitting an electrical stimulation signal and sensing an electrical sense signal, said electrode device (14) being arranged at said distal end (101, 151) of the body (100, 150) and comprising a helix element (142) to be screwed into tissue. A blade section (16) is configured to cut into tissue when said helix element (142) is screwed into tissue.

In some examples, a tether head assembly of a delivery system includes an inner retainer and an outer retainer defining an aperture. A tether head assembly of a delivery system includes an inner retainer and an outer retainer defining an aperture including a receptacle configured to receive an attachment member of a medical device, a passageway, and a recess. The inner retainer is movable within the recess between a second position in which the passageway is sized to receive the attachment member and a first position in which the passageway is sized to prevent passage of the attachment member. A 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.

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.

A process of treatment of internal organ oedema is using an electric current delivering electrode system comprising electrodes to be positioned at two places on the outer surface of the internal organ and / or in a liquid carrying vessel of the internal organ and delivering electric current to induce electro-osmosis between the electrodes. An electrode assembly system for this treatment by electro-osmosis includes, in addition to the two electrodes, a control unit adapted to control the current flow between the two electrodes.

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).

A fastening system (1) for an electrostimulation generator (2), having a generator and electrodes, comprising a casing (4) for housing the generator (2), which has a first and a second opening (7.1, 7.2) of the same kind, provided on opposite sides of the casing; means for connecting the electrodes (5) to the casing (4) in the first or second opening (7.1, 7.2), said means being formed by a first connector (13) for the passage of the electrodes and having a hermetic valve (14) inside the first connector (13); a closing element (10) provided at the opening of the casing (4) and opposite the opening having the means for connecting the electrodes (5); means (6) for fixing the electrodes (5) to the skin; and means for fixing the casing (4) to the body of the patient (3).

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.

The present disclosure relates to a system (100) for providing stimulation to a patient, in particular stimulation to a left bundle branch area of the heart (701) of the patient, the system comprising: a stimulation pulse generator (10, 610); at least one electrode (30, 620, 800) having a distal end (31) for being engaged with the patient and a proximal end for being engaged with the generator (10, 610), the electrode (30, 620, 800) being configured to be implanted at least partially in the septum (713) of the heart (701) of the patient, and to provide stimulation to the patient, wherein the distal end (31) comprises a fixing portion configured to facilitate implanting in the septum (713); a sheath (50) having a three- dimensional opening for guiding the at least one electrode (30, 620, 800) for implanting of the electrode (30, 620, 800); wherein the generator (10, 610), the electrode (30, 620, 800) and the sheath (50) are adapted for use in combination with each other.

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.

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

A cardiac pacing system that includes an implantable pulse generator and electrical leads that include a lead body portion having a distal end and a proximal end, a connector configured to electrically connect the proximal end of the lead body to the pulse generator, and at least one electrode disposed at the distal end of the lead body for delivering electrical stimulation to a patient's heart, wherein the distal end of the lead body is configured to terminate within the mediastinum of the thoracic cavity of the patient, proximate to the heart.

The disclosure describes capturing the cardiac tissue using current steering techniques with a multi-pole cardiac lead implanted near the cardiac tissue. The techniques may include current-controlled sources in an IMD to provide current regulation to the pacing pulses allowing direct stimulation through multiple electrode contacts with known current delivery to the tissue. This current steering technique may use a delivery current source coupled to a delivery electrode and a receiving current source coupled to a receiving electrode to steer the current to the desired tissue to be stimulated. In some examples, different electrode pairs may be paced sequentially or together. In other examples, two or more electrodes may be considered the “delivery electrodes” and two or more electrodes may be considered the “receiving electrodes.” In some examples a current-controlled source in the IMD may be implemented using a source degeneration circuit.

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.