40 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 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.

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.

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.

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.

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.

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 medical device is configured to determine tachyarrhythmia evidence in a cardiac signal segment received from a cardiac electrical signal sensed during a pacing escape interval started to schedule a pending cardiac pacing pulse. The medical device may delay the pending cardiac pacing pulse in response to determining the tachyarrhythmia evidence during the pacing escape interval.

The utility model relates to heart pacing technical field especially is a kind of heart pacing monitoring device, including detection organism, the outer surface one side of detection organism is fixedly installed with patch structure, the patch structure includes first connecting line;The one end of first connecting line is fixedly installed with spring line, the one end of spring line is fixedly installed with second connecting line, through patch structure, when monitoring work is carried out, by tearing off dustproof sheet after making electrode patch stick in the chest cavity of sick child, subsequently two clamps are clamped at the connecting place of second connecting line and electrode patch, by positioning pin fixed subsequently by pulling elastic band to outside, make it maximum limit spread to opposite two directions, subsequently second patch is tightly attached on the skin of sick child, thus can improve the fixing strength of device by two layer pasting mode, thus reaches the purpose that patch is not easily influenced by children to lead to peeling, improves the monitoring stability of device.

A first device comprises an accelerometer and is configured to deliver cardiac pacing to a patient, and sense physiological activity of the patient sensed via the accelerometer. A second device is configured to sense the physiological activity of the patient via a plurality of electrodes. Processing circuitry is configured to compare the sensing of the physiological activity by the first device to the sensing of the physiological activity by the second device and based on the comparison, control whether the first device delivers the cardiac pacing based on the sensing of the physiological activity via the accelerometer.

A system includes sensing circuitry configured to sense a physiological signal of a patient via one or more electrodes disposed on an implantable medical lead coupled to a medical device of the system; and processing circuitry configured to: determine that one or more features of the physiological signal are indicative of potential right ventricular (RV) lead dislodgement; determine a patient risk level of the patient based on one or more of: an underlying heart rate of the patient; or user input indicative of the patient risk level; and based on the determination that one or more features of the physiological signal are indicative of potential RV lead dislodgement and the patient risk level meeting a criterion, send an emergency alert to a user.

A medical device is configured to determine tachyarrhythmia evidence in a cardiac signal segment received from a cardiac electrical signal sensed during a pacing escape interval started to schedule a pending cardiac pacing pulse. The medical device may delay the pending cardiac pacing pulse in response to determining the tachyarrhythmia evidence during the pacing escape interval.

A device includes an electrode, a power source, an electrical pacing circuit, and a coating applied to one or more surfaces of the electrode. The electrical pacing circuit is coupled to the power source and configured to deliver cardiac pacing. The coating includes a first adhesive layer comprising porous titanium nitride and a second electrically insulating layer comprising parylene. The thickness of the second electrically insulating layer is substantially uniform throughout the coating. A method of applying a coating, the method comprising: applying, at a first time, a first adhesive layer to one or more surfaces of an electrode; applying a plasma cleaning process to the first adhesive layer at a second time after the first time; and applying a second electrically insulating layer to the one or more surfaces of the electrode coated with the first adhesive layer at a third time after the second time.

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.

Systems and methods 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 the insertion site of the medical lead. The method may include selecting, for execution by an implantable medical device, a pacing algorithm from a first pacing algorithm configured to provide intermittent pacing support and a second pacing algorithm configured to provide continuous pacing support.

Systems and methods for detecting obstructions in a patient's cardiac conduction system using heart sound information are disclosed. An exemplary medical device system includes a data receiver circuit to receive heart sound information sensed from a patient, and a controller circuit to generate heart sound metrics or characteristics from received heart sound signals. The heart sound metric may include a metric indicative of the presence or absence of split S1 sound. The controller circuit may detect a Beam Branch Block (BBB) based at least in part on the heart sound metric, including to distinguish between a left Beam Branch Block (LBBB) and a right Beam Branch Block (RBBB). The BBB indicator may be provided to the user or a process that may be performed by the medical device system to optimize cardiac pacing and restore cardiac synchronization.

The invention is entitled "Distributed cardiac pacing system". The invention discloses an apparatus comprising a relay and sampling unit, a pacing unit, a pacing detection circuit and a processor. The relay and sampling unit receives a plurality of electrocardiogram (ECG) signals sensed by respective electrodes in a patient's heart, and digitizes a first subset of the ECG signals, and forwards a second subset of the ECG signals that are not digitized over an analog line. The pacing unit outputs a pacing signal, the pacing detection circuit detects the pacing signal and outputs a trigger in response. The processor receives the trigger and an identity of an electrode of the electrodes via which the pacing signal is to be applied, and in response to identifying that the electrode via which the pacing signal is to be applied is currently associated with the digitized ECG signals, instructs the relay and sampling unit to switch the identified electrode to the analog line for communicating the pacing signal.

An implantable system (14) for intravascular placement within a blood vessel, particularly the coronary sinus, for monitoring electrical activity and cardiac pacing. The system includes an expandable anchoring structure (21) that secures within the vessel and a detachable device body (23) that houses electronics and a power source. Electrodes (24, 25) are deployable to extend through the anchoring structure to engage surrounding tissue, enabling electrical sensing and stimulation. The electrodes can be selectively positioned and retracted for optimal placement. The system supports wireless communication with other implantable devices, such as defibrillators. A method of deployment ensures secure anchoring, precise electrode placement, and the ability to replace the device body without disturbing the anchoring structure.

The invention relates to the technical field of medical equipment, and discloses a delivery system special for physiological cardiac pacing with a probe method, which comprises a delivery probe, the outer layer of the delivery probe is made of a polytetrafluoroethylene composite insulating material, the inner layer of the delivery probe is made of a titanium alloy or stainless steel alloy conductive material, two ends of the probe are exposed, one end of the probe enters cardiac muscle, and the other end of the probe is connected with an in-vitro tester; cardiac muscle stimulation and local cardiac muscle threshold value, sensing, impedance and QRS wave group width testing can be rapidly and simply carried out; the physiological pace-making electrode is composed of an internal hollow wire and an external silica gel insulating layer. The bendable delivery sheath is subjected to double-bend 3D pre-plasticity, one bend points to the ventricular septum, and the other bend can be adjusted in size through a rear handle; and the real-time image navigation system adopts X-ray images, provides real-time cardiac anatomical images and is used for guiding accurate implantation of the probe and the electrode. Through a delivery probe, an adjustable bending delivery sheath and a real-time image navigation technology, high-precision implantation of a physiological pacing electrode wire is realized, and the problem of inaccurate positioning in a traditional system is avoided.