80 results about "Cardiac pacing" patented technology

A pacing system (100) for wireless extra-cardiac pacing of a heart (303) of a patient (301). The pacing system (100) includes a generator (102), a transmitter (104), and an implant device (106). The generator (102) is configured to generate energy. The transmitter (104) is configured to transmit the energy generated by the generator (102). The implant device (106) including an expandable stent that is configured to be implanted in the heart (303) of the patient (301), the implant device (106) including a receiver (220) that is configured to receive the energy that is transmitted by the transmitter (220), the implant device including a transducer (222) that is configured to transduce the energy into a pacing stimulus that is configured to pace the heart (303).

A pacing system (100) for wireless extra-cardiac pacing of a heart (303) of a patient (301). The pacing system (100) includes a generator (102), a transmitter (104), and an implant device (106). The generator (102) is configured to generate energy. The transmitter (104) is configured to transmit the energy generated by the generator (102). The implant device (106) including an expandable stent that is configured to be implanted in the heart (303) of the patient (301), the implant device (106) including a receiver (220) that is configured to receive the energy that is transmitted by the transmitter (220), the implant device including a transducer (222) that is configured to transduce the energy into a pacing stimulus that is configured to pace the heart (303).

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.

A method and device apparatus to deliver a pacing therapy capable of remodeling a patient's heart over a period of time that includes monitoring one or more parameters in response to a delivered cardiac remodeling pacing, determining whether the cardiac remodeling pacing has an effect on cardiac normalization in response to the monitoring, and adjusting the cardiac remodeling pacing in response to the determined effect on cardiac normalization. The method and device may also perform short-term monitoring of one or more parameters in response to the delivered cardiac remodeling pacing, monitor one or more long-term parameter indicative of a long-term effect of the delivered cardiac remodeling pacing, determine the long-term effect of the delivered cardiac remodeling pacing on cardiac normalization in response to the monitoring, and adjust the cardiac remodeling pacing in response to one or both of the short-term monitoring and the determined long-term effect on cardiac normalization.

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.

Implantable leadless pacing devices and medical device systems including an implantable leadless pacing device are disclosed. An example implantable leadless pacing device may include a pacing capsule. The pacing capsule may include a housing. The housing may have a proximal region and a distal region. A first electrode may be disposed along the distal region. One or more anchoring members may be coupled to the distal region. The anchoring members may each include a region with a compound curve.

Systems and method for ambulatory cardiac pacing are provided. A method may include providing an implantable medical device and a medical lead and inserting the medical lead into a vein of a patient and securing the holder adjacent to an insertion site of the medical lead. The method may include selecting a pacing algorithm from among a first pacing algorithm configured to provide intermittent pacing support and a second pacing algorithm configured to provide continuous pacing support, for execution by the implantable medical device.

An implantable medical device has a therapy module configured to generate a composite pacing pulse including a series of at least two individual pulses. The therapy module is configured to generate the composite pacing pulse by generating a first pulse of the at least two individual pulses by selectively coupling a first portion of a plurality of capacitors to an output signal line and generate a second pulse of the at least two individual pulses by selectively coupling a second portion of the plurality of capacitors to the output signal line.

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.

A method of cardiac treatment to provides a synergetic therapeutic effect of lowering the hyperactive sympathetic response observed in microvascular disease (MVD) and heart failure (HF) pathologies and promoting cardiac remodeling of left ventricular hypertrophy in a patient. The method may include ablating renal sympathetic nerves of the patient to reduce sympathetic afferent and efferent activity to the kidney, thereby reducing blood pressure, delivering cardiac pacing to induce remodeling of hypertrophy of the left ventricle of the patient's heart, and stimulating a vagus nerve of the patient to induce an anti-inflammatory reflex in the patient's heart. The method may include ablating renal sympathetic nerves of the patient to reduce sympathetic afferent and efferent activity to the kidney, thereby reducing blood pressure, and stimulating carotid baroreceptors of the patient to downregulates sympathetic tone and upregulates parasympathetic tone.

Systems and methods to improve programming of medical devices and delivery of cardiac pacing are disclosed, including receiving parameter settings of an ambulatory medical device, processing the received parameter settings by inputting the received parameter settings into one or more pre-trained machine learning models to identify one or more differences between the parameter settings of the ambulatory medical device and the model parameter settings of one or more other ambulatory medical devices, and generating a programming recommendation for the ambulatory medical device to improve cardiac capture for the patient based on the identified one or more differences.

This application relates to the field of implantable medical device technology, and discloses a temporary cardiac pacing system and method. The temporary cardiac pacing system includes: an external control device and a temporary cardiac pacing device; the temporary cardiac pacing device includes an energy supply unit and a magnetic control unit; the energy supply unit and the magnetic control unit are connected via a connector; the external control device is used to generate pulsed magnetic field signals; the magnetic control unit is used to use the pulsed magnetic field signals to pulse-conduct the circuitry of the temporary cardiac pacing device, thereby controlling the energy supply unit to pulse-discharge, thereby stimulating the myocardium to induce contraction and achieve cardiac pacing. Because magnetic fields have the unique physical advantage of penetrating biological tissue almost without damage, using magnetic field signals to penetrate biological tissue can avoid damage to the biological tissue, thereby reducing the safety risks of the temporary cardiac pacing device.

A system includes an implantable medical device (IMD) and processing circuitry. The IMD includes sensing circuitry configured to sense cardiac electrical signals of a patient, and therapy delivery circuitry configured to deliver demand cardiac pacing to a heart of the patient based on the cardiac electrical signals. The processing circuitry is configured to: determine, for each of a plurality of time units, based on the cardiac electrical signals and the delivery of demand cardiac pacing during the time units, a plurality of metrics indicative of a need for continued delivery of demand cardiac pacing to the heart of the patient. The plurality of metrics includes a metric associated with a duration of one or more pacing episodes during the time unit. The processing circuitry is further configured to generate a graphical representation of the plurality of metrics of the plurality of time units for presentation to a user.

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.

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.

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.

The invention relates to the technical field of medical instruments, in particular to a cardiac pacing adjusting device in transcatheter aortic valve replacement. Comprising a base, an operating table, an electric push rod, a back cushion and a back propping mechanism, an electric push rod is mounted on the right side of the base, a through groove is formed in the right side of the operating table, a back jacking mechanism is connected in the through groove, and a back cushion is slidably connected in the through groove. The back of a patient is jacked up by arranging the back jacking mechanism, so that the chest of the patient can relax and relax, a catheter can be conveniently fed into the heart, the arms of the patient can be moved downwards by arranging the back opening plate, the electric push rod and the pull rod, and therefore the chest of the patient can be further relaxed and relaxed; the two independent leg pulling mechanisms are arranged to separate the two legs of the patient, and femoral artery puncture can be conveniently conducted on the patient.

A medical device is configured to deliver a series of electrical stimulation pulses including opposing polarity pulses. The medical device delivers a charge balancing pulse by modifying every nth pulse of the electrical stimulation pulses to reduce a net charge delivered over the series of electrical stimulation pulses. In some examples, the medical device may be an implantable medical device that is coupled to an extra-cardiovascular lead for delivering the cardiac pacing pulses.

A medical device configured to sense a first instance of a physiological signal indicative of respiration of a patient during a first period of time; deliver cardiac pacing pulses to the patient via a plurality of electrodes; predict, by a machine learning model for a second period of time, a second instance of the physiological signal based on the first instance of the physiological signal; adjust a rate of cardiac pacing based on the predicted second instance of the physiological signal; and adjust the rate of cardiac pacing based on a third instance of the physiological signal in response to one of a duration of time since a most recent update of the machine learning model meeting a time threshold, a change in baseline heart rate of the patient meeting a change threshold, a change in patient activity meeting a change threshold.

A medical device system includes a sensing circuit configured to sense at least one cardiac electrical signal and a therapy delivery circuit configured to deliver pacing pulses. The medical device system includes control circuitry configured to determine evoked response signal features from the at least one cardiac electrical signal sensed following pacing pulses delivered by the therapy delivery circuit. The control circuitry is configured to determine an adaptive threshold based on a center metric of a first portion of the evoked response signal features. The control circuitry may be further configured to detect an evoked response morphology change in response to a second portion of the evoked response signal features being outside the adaptive threshold from the center metric.

An implantable medical device is configured to determine a value of a monitored variable by the implantable medical device and convert the value to a data sequence of modulated electrical stimulation rate intervals. The implantable medical device delivers electrical stimulation pulses according to the data sequence of modulated stimulation rate intervals to produce a modulated activation rate of excitable tissue of a patient corresponding to the modulated stimulation rate intervals. The modulated activation rate is detectable by a rate monitor to demodulate the value of the monitored variable data. In some examples, the implantable medical device is a pacemaker that delivers cardiac pacing pulses according to modulated pacing rate intervals to produce a modulated heart rate of the patient that is detectable by a heart rate monitor to demodulate the value of the monitored variable.

Methods and systems for delivering cardiac pacing therapy, including sensing a cardiac signal via an electrode of an atrial lead, and determining the occurrence of one of an intrinsic atrial depolarization event and a paced atrial depolarization event for a current cardiac cycle in response to the sensed cardiac signal. In response to the determined occurrence of the depolarization event, delivering a first pacing therapy during the current cardiac cycle, and comparing the amplitude of the cardiac signal after the delivered first pacing therapy in the current cardiac cycle to a predetermined amplitude threshold. In response to the amplitude not being more negative than the predetermined amplitude threshold, delivering a second pacing therapy via a left ventricular lead in the same cardiac cycle and after the delivered first pacing therapy, and in response to the amplitude being more negative than the predetermined amplitude threshold, not delivering the second pacing therapy.

A cardiac pacing system having a pulse generator for generating therapeutic electric pulses, a lead electrically coupled with the pulse generator having an electrode, a first sensor configured to monitor a physiological characteristic of a patient, a second sensor configured to monitor a second physiological characteristic of a patient and a controller. The controller can determine a pacing vector based on variables including a signal received from the second sensor, and cause the pulse generator to deliver the therapeutic electrical pulses according to the determined pacing vector. The controller can also modify pacing characteristics based on variables including a signal received from the second sensor.

Systems and methods for cardiac pacing are provided, where a pacing lead is placed at or near the bundle of His. A method for pacing a heart of a patient comprises: introducing a sheath to vasculature of the patient; steering the sheath within a coronary sinus in the heart to lodge a distal end of the sheath to a target location proximal to the bundle of His above a septum separating a left ventricle and a right ventricle of the heart; advancing a pacing lead through a lumen of the sheath to the target location; coupling the pacing lead to cardiac tissue at the target location; removing the sheath; and electrically pacing the bundle of His using the pacing lead.

Implantable medical device configured to provide for an intra-cardiac pacing includes an electrode arrangement configured to sense a cardiac sense signal and processing circuitry operatively connected to the electrode arrangement. The processing circuitry is configured to start a first timer based on a ventricular sense event; to open an atrial detection window based on a first timer count; to start a second timer based on an atrial sense event; to identify a first timeout based on a comparison of a second timer count and a first pacing delay; to identify a second timeout based on a comparison of the first timer count and a second pacing delay; to identify a third timeout based on a comparison of the first timer count and a basic rate interval; and to trigger a ventricular pace signal based on an identification of at least one of the first, second and third timeouts.

A medical device is configured to set a post-atrial time interval in response to an atrial event and generate an event time signal in response to a ventricular electrical signal crossing an R-wave sensing threshold during the post-atrial time interval. The device accumulates oversensing evidence in response to the event time signal and adjusts a ventricular sensing control parameter based on the accumulated oversensing evidence in some examples.

The invention discloses a magnetic-drive navigation multi-stiffness sheathing canal for a cardiac pacing operation. A multi-rigidity distribution sheathing canal structure is adopted, a plurality of magnetic units are arranged on the small-rigidity section at the far end, effective constraint on a sheathing canal deflection area and a deflection form is achieved, the rigidity of the sheathing canal is gradually increased from the far end to the near end, the magnetic drive effect is mainly concentrated on the small-rigidity section, and the middle-rigidity section and the large-rigidity section are kept relatively stable; wide-range swinging of the whole sheathing canal is avoided; meanwhile, a plurality of magnetic units are arranged in the small-rigidity section, so that magnetic drive control is changed from a single-point effect to a multi-point synergistic effect distributed in the axial direction, a small curvature radius is formed, and therefore fine control suitable for a narrow space of the heart is achieved. According to the magnetic drive sheath tube, the deflection range and the action area are effectively limited while the large deflection capacity is guaranteed, the risk of damage to surrounding tissue is reduced, and the safety and adaptability of the magnetic drive sheath tube in a cardiac pacing operation are remarkably improved.

A cardiac pacing system having a pulse generator for generating therapeutic electric pulses, a lead electrically coupled with the pulse generator having an electrode, a first sensor configured to monitor a physiological characteristic of a patient, a second sensor configured to monitor a second physiological characteristic of a patient and a controller. The controller can determine a pacing vector based on variables including a signal received from the second sensor, and cause the pulse generator to deliver the therapeutic electrical pulses according to the determined pacing vector. The controller can also modify pacing characteristics based on variables including a signal received from the second sensor.

A cardiac pacing device for implantation in a patient's heart, wherein the cardiac pacing device comprises a processing unit for controlling a pacing signal generator and further comprises a detector configured to measure a time-dependent signal of an intrinsic atrial activity, wherein the processing unit is configured to detect a presence and absence of an intrinsic atrial event within a cardiac cycle based on the measured signal of the atrial activity within the respective cardiac cycle received from the detector, wherein the processing unit is configured to control the pacing signal generator to provide an electrical signal based on the presence and absence of an intrinsic atrial event. Further, a system comprising such first cardiac pacing device and a second cardiac pacing device is explained as well as respective operation methods.