338results about "Epicardial electrodes" patented technology

A transient closed-loop system for cardiac pacing and / or defibrillator therapy for a subject includes a bioresorbable module configured to at least partially attach to an epicardial interface of the subject's heart for the cardiac pacing; at least one skin-interfaced module configured to attach to an outer surface of the subject's skin, wherein the bioresorbable module is in wireless communication with the at least one skin-interfaced module; and a control module in wireless communication with the at least one skin-interfaced module.

An implant delivery system, a cardiac rhythm adjustment system, and a cardiac rhythm adjustment method. The implant delivery system comprises a puncture sheath (20) and an implant. The puncture sheath (20) comprises a hollow tube body (12). The implant is releasably disposed in the tube body (12), a distal end of the tube body (12) is a puncture head (13) which can pierce into the ventricular muscle and guide the tube body (12) to pass through the ventricular muscle, and the length of the tube body (12) at least is able to extend into the ventricular muscle from the outside via the apex (4). The implant is an implantable electrode (60, 61, 62, 63, 64, 65, 66), and implantation via an intramyocardial route is used for the electrode (60, 61, 62, 63, 64, 65, 66), so as to achieve real physiological position pacing and biventricular electrical synchronization by means of program control of a pulse generator (80).

The present invention provides a medical device and a medical device control system. The medical device comprises a main casing body, an electrical assembly, a connecting assembly and a patch assembly, the electrical assembly and the connecting assembly being arranged in the main casing body, the main casing body being provided with a first through hole through which an electrode wire penetrates, the connecting assembly being configured to electrically connect the electrical assembly and the electrode wire, and the patch assembly being configured to fix at least one of the main casing body and the electrode wire to a target position. The medical device provided by the present invention is portable and compact, is more convenient to wear by wearers, and is not liable to cause infection, thus helping to rehabilitation of wearers.

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

The invention relates to the use of an electronic element (E) with at least one processor—and memory function (27b), for use as an arithmetic element (6) and / or computer element (6) and / or device element (2a) and / or component element (2a), the electronic element comprising an identification—(1c) and / or authentication function (1c) of a user in a digital network (12) by means of a computer-assisted, at least partly automated and / or autonomously ordered encrypted method (14e), and / or comprising a computer-assisted, at least partly automated and / or autonomously ordered control function (1b), wherein the electronic element (E) consists of at least one hardware element (27) and / or software (26).

The invention relates to a heart valve regurgitation drum and optional closure disk and / or tubular stent to manage and provide levels of intentional regurgitation within 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-atrially to the mitral valve, the valve having a height of about 5-60 mm and a diameter of about 25-80 mm, without requiring an oversized diameter catheter and without requiring delivery and deployment from a catheter at an acute angle of approach.

A subcutaneously implantable device includes a housing, a clip attached to the housing, and an electrode. The clip is configured to move between an open position and a closed position to increase or decrease an opening between the housing and the clip to anchor the device to a muscle, a bone, and / or a first tissue. The electrode is configured to contact an organ, a nerve, the first tissue, and / or a second tissue. Circuitry in the housing is in electrical communication with the electrode and is configured to provide monitoring, therapeutic, and / or diagnostic capabilities with respect to the organ, the nerve, the first tissue, and / or the second tissue.

A subcutaneously implantable device is implantable into a body of a patient, and includes a prong and an electrode. The prong has a contact portion at or adjacent to a distal end thereof that is configured to contact an organ. The prong is constructed to apply pressure to the organ with spring action so as to maintain contact between the contact portion and the organ without fixing the contact portion to the organ. The electrode is provided at the contact portion of the prong, is configured to contact the organ, and is electrically coupled or couplable with circuitry that is configured to provide monitoring, therapeutic, and / or diagnostic capabilities with respect to the organ.

Ventricle-from-atrium (VfA) cardiac therapy may utilize a tissue-piercing electrode implanted in the left ventricular myocardium of the patient's heart from the right atrium through the right atrial endocardium and central fibrous body. The exemplary devices and methods may determine whether the tissue-piercing electrode is achieving effective left ventricular capture. Additionally, one or more pacing parameters, or paced settings, may be adjusted in view of the effective left ventricular capture determination.

A surgical system including an implantable medical device having a size and shape. The surgical device having a substrate and a coating that covers at least a portion of the substrate. The coating includes a polymer, collagen, glycerin and a hemostatic agent. The polymer is selected from the group of polyhydroxybutyrate, polyglycerol sebacate and adducts of polyglycerol sebacate. The substrate including a first piece and a second piece that is joined with the first piece. The first piece and the second piece forming a pocket having a cavity and an opening that is in communication with the cavity. The device being pre-formed such that a size and shape of the cavity conforms to the size and shape of the implantable medical device.

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.

This document describes methods and devices for securing epicardial devices. For example, this document describes methods and devices for securing epicardial devices by passing a sheath into a pericardial space of a patient through a first percutaneous access site, passing a guidewire through the sheath into the pericardial space of the patient, passing the guidewire through a transverse sinus of the patient, passing a snare device into the pericardial space through a second percutaneous access site, and capturing a free end portion of the guidewire using the snare device.

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 lead device is provided for a medical treatment apparatus, where the lead device includes protruding anchoring mechanisms for anchoring the lead device in tissue. The anchoring mechanism include permanent anchoring mechanisms, or a combination of permanent and dissolvable anchoring mechanisms, to anchor the device in tissue. The anchoring mechanism resists migration of the lead device in at least one or both axial directions.

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.

A device for delivering an implantable medical device (IMD) includes an elongated member and a deployment chamber configured to accommodate the IMD, the deployment chamber defining a distal opening for deploying the IMD outside of the deployment chamber. The device includes: a first electrode, the first electrode positioned inside the deployment chamber during intravascular navigation; a second electrode; and an impedance detection circuit system, the impedance detection circuit system configured to deliver an electrical signal to a path between the first electrode and the second electrode through at least one of a patient's fluid or tissue. The device also includes a processing circuit system, the processing circuit system configured to determine an impedance of the path based on the signal and control a user interface to indicate when the impedance of the path indicates that at least one of the IMD or the distal opening is in a fixed configuration relative to a target site of the patient.

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.

An improved system for temporary cardiac pacing addresses the problem associated with heart tissue damage caused by removal of the temporary pacing leads. In the improved system the leads biodegrade and thus need not be removed. This, in turn, allows the surgeon to attach the leads more firmly to the heart.

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.

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.

To provide a leadless pacemaker device 1 to provide an intra-cardiac pacing.SOLUTION: The leadless pacemaker device 1 includes processing circuitry 15 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 15 is configured to derive a combined signal portion Scomb from signal portions S of the sense signal relating to the multiplicity of heart cycles and to analyze the combined signal portion Scomb for obtaining information relating to an atrial event As. Thus, the leadless pacemaker device allows, in particular, a reliable detection of signals relating to an atrial activity and the use of such signals for controlling a ventricular pacing rate for ventricular pacing. The processing circuitry 15 is configured to sum a predefined number of signal portions S relating to different heart cycles to obtain the combined signal portion Scomb.SELECTED DRAWING: Figure 3

A device for use during cardiothoracic surgery around the heart of a patient. The device includes an angled drainage tube including a first portion having a plurality of drainage orifices and a second portion which is angled relative to the first portion. A flexible drainage tube extends from the angled tube and is in fluid communication therewith. A pair of pacing electrodes are disposed on a single aspect of the first portion of the angled drainage tube. The pacing electrodes are adapted to be in contact with the heart muscle for intrinsic rhythm sensing and pacing capability thereof. At least one electrical wire is connected to the pacing electrodes and extends along a portion of the angled drainage tube. The at least one electrical wire is connectable to a pacing box via a cable for powering and controlling the pacing electrodes.