46 results about "Pacemaker system" patented technology

A non-invasive, removable intraoral electrical Stimulator or Pacemaker system and method is described, for electrically-stimulating and re-establishing the tone in the upper pharyngeal dilator muscle, the genioglossus and base-of-tongue muscles, for the treatment of Obstructive Sleep Apnea (OSA) in human adults and young adults. The Stimulator system consists of an intraoral Stimulator device assembly with a rechargeable battery, an external (inductive) Recharger appliance and an external hand-held (inductive) Programmer appliance. The Stimulator device assembly is inserted into the mouth by the OSA patient before sleep time and is removed when awake or during normal activity and placed in the charging cradle of the Recharger appliance for recharging the device battery. The physician uses the hand-held Programmer appliance to determine and set the patient-specific stimulation therapy parameters in the device, at the patient's initial evaluation. The stimulation therapy is delivered either in an open loop configuration without regard to patient's respiration activity, or in a closed loop configuration synchronized to the patient's respiration detected by one or more sensors in the system.

An implantable cardiac monitoring device as an A-mode ultrasound probe which is adapted to be positioned in the right ventricle of a heart, and which emits an ultrasound signal which is reflected from one cardiac segment of the left ventricle of the heart, and the ultrasound probe receives the resulting echo signal. The delay between the emission of the ultrasound signal and the reception of the resulting echo is measured, and from this delay a position of the cardiac segment is determined. The position of this cardiac segment, at least one reflecting the signal, is related to cardiac performance, and thus the monitoring device determines, from the detected position of the cardiac segment, the cardiac performance.

This invention provides pacemaker systems comprising (1) an electronic pacemaker, and (2) a biological pacemaker, wherein the biological pacemaker comprises a cell that functionally expresses a chimeric hyperpolarization-activated, cyclic nucleotide-gated (HCN) ion channel at a level effective to induce pacemaker current in the cell. The invention also provides related biological pacemakers, atrioventricular bridges, methods of making same, and methods of treating a subject afflicted with a cardiac rhythm disorder.

This document provides devices and methods for the treatment of heart conditions. For example, this document provides a percutaneous temporary epicardial pacemaker device and system for treating heart arrhythmia.

The present invention provides advancements in the art of cardiac pacemakers. The invention provides a pacemaker system that comprises at least one pacemaker and that is, to a large extent, self-controlled, allows for long-term implantation in a patient, and minimizes current inconveniences and problems associated with battery life. The invention further includes a mechanism in which at least two pacemakers are implanted in a patient, and in which the pacemakers communicate with each other at the time of a given pacing or respiratory event, without any required external input, and adjust pacing parameters to respond to the patient's need for blood flow. The invention further provides a design for a pacemaker in which the pacemaker electrode is connected to the pacemaker body by a lead that is configured to allow the pacemaker to lie parallel to the epicardial surface and to reduce stress on the pacemaker and heart tissue.

The invention discloses a controllable wireless cardiac pacemaker system with multi-electrode pacing, which belongs to the field of electrical stimulation medical devices. The wireless pacemaker system has four or more fixed hooks, the pacing electrode is positioned on the anchoring hooks of the implant device, as long as one of the fixation hooks is punctured in the myocardium, it can function asa pacing. The pacemaker system has an electrode 'compensation' function, and when a single electrode is lost, the other electrode is controlled to be used for pacing without performing a second operation. In addition, the pacemaker system employs a chip (e. g., 74 LS148 and the like.) that can control the number of uses of the electrodes remotely according to the actual clinical situation of thepatient, achieve simultaneous stimulation of the four electrodes, or three electrode stimulation, or both electrode stimulation, or any of the electrode stimulation, and the stimulation intensity is adjustable. The system of the invention increases the probability of the electrode targets to contact the myocardium, reduces the risk of perforation during implantation of the pacemaker, reduces the number of re-implantation of the myocardial necrosis patient, prolongs the service life of the implantation device, and the simulation intensity varies according to patients, and it has great referencevalue and application value to the active implantation device.

The invention provides a battery box which comprises a battery module, a box body with a battery cabin, a locking module and a pop-up module, wherein the battery module is used for fixing a battery and comprises a shell, a first electrode reed and a buckling end; a second electrode reed fixed on the box body is arranged in the battery cabin, and two poles of a battery are respectively connected with the first electrode reed and the second electrode reed; the locking module comprises a lock catch, a lock catch spring and a limiting device for limiting the lock catch, the lock catch spring is inserted into the box body through the lock catch, and the buckling end is buckled in the box body through the lock catch; the pop-up module is used for the popping out the buckling end. The invention provides a pacemaker system analyzer and the battery box thereof; the process of the opening the battery box is simple, the battery is conveniently taken down, and the battery module can be popped out while the battery box is opened, so that the battery can be quickly separated from the second electrode reed, and further, quick power-off is realized.

A pacemaker system 100 includes a pacemaker device 160, cardiac leads 120 and 150, guide catheter 110, an ultrasound transmitter 133 and an ultrasound receiver 130. Cardiac lead 150 is implanted in the right atrium (RA) 82 and includes an electrode 152 at its distal end that is actively fixed into location 102 of the right atrium 82. Electrode 152 is used for pacing of the RA. Cardiac lead 120 is implanted in the right ventricle (RV) 84 and includes two separate electrodes. A first electrode 140 is actively fixed into location 101 close to the apex 98 of the right ventricle 84 and is used for pacing, sensing and/or defibrillating of the RV. A second electrode 130 perforates the apex 98 of the right ventricle 84 and is actively fixed into the apex 99 of the left ventricle (LV) 86. Electrode 130 is used for pacing, sensing and/or defibrillating of the LV.

A respiration implant system for a patient with impaired breathing includes one or more temperature sensors configured for placement into an inner wall tissue along an airway passage of the patient and configured to measure temperature in the inner wall tissue in order to produce a temperature signal based on the measured temperature. The system further includes a pacing processor configured to receive the temperature signal from the temperature sensor and to generate a respiration pacing signal based on the temperature signal that is synchronized with a breathing cycle of the patient and a stimulating electrode configured to deliver the respiration pacing signal from the pacing processor to respiration neural tissue of the patient to facilitate breathing in the patient. The respiration implant system may be used as a laryngeal pacemaker system.

The invention provides a system for achieving double-ventricle re-synchronization by tracking biological atrioventricular delay (AVD) via single left ventricle hop-by-hop. The system comprises a three-chamber pacemaker system and a single left ventricle hop-by-hop tracking biological AVD working procedure. Before the procedure is started, when ultrasonic cardiogram optimization has not been performed, an optional empirical value of a period (V-R period) where the left ventricle should be prior to the right ventricle is 10ms-40ms. If the V-R period should be obtained via the ultrasonic cardiogram optimization, the system will firstly finish the ultrasonic cardiogram optimization to obtain the V-R period before working. According to the invention, the system can approximately track the biological atrioventricular delay and achieve double-ventricle re-synchronization just via the left ventricle pace-making, and is quite physiological with no need for extending the AVD acquisition AS-VS period; limitations on atrioventricular synchronization by other systems are overcome; the left ventricle electrode is free from power consumption pace-making, so service lifetime of a cell is extended; 50% of cost of heart re-synchronization treatment is reduced; and the system has important significance and application value on limited medical treatment resources.

Systems and methods for heart stimulation in accordance with embodiments of the invention are illustrated. One embodiment includes a heart stimulation system, including a first wirelessly powered, leadless pacemaker, including a wireless power receiver tuned to a first frequency, an energy harvesting circuitry, a stimulation circuitry, and a stimulation electrode, a controller, including a wireless power signal generator, a wireless power transmitter tuned to the frequency, a processor, and a memory containing a stimulation control application, where the stimulation control application directs the processor to generate a power transfer signal using the first wireless power signal generator, and transmit the power transfer signal using the wireless power transmitter, wherein the wirelessly powered, leadless pacemaker receives the power transfer signal using the first wireless power receiver, and when receiving the power transfer signal, the energy harvesting circuitry stores power received via the wireless power receiver in at least one capacitor.

Systems and methods for pacing cardiac conductive tissue are described. An embodiment of a medical system includes an electrostimulation circuit to generate His-bundle pacing (HBP) pulses to stimulatea His bundle, and a cardiac event detector to detect a His-bundle activity within a time window following an atrial activity. The cardiac event detector may use a cross-chamber blanking, or an adjustable His-bundle sensing threshold, to avoid or reduce over-sensing of far-field atrial activity and inappropriate inhibition of HBP therapy. The electrostimulation circuit may deliver HBP in the presence of the His-bundle activity. The system may further recognize the detected His-bundle activity as either a FFPW or a valid inhibitory event, and deliver or withhold HBP therapy based on the recognition of the His-bundle activity.

A method and system of adapting heart rate in cardiac tissue based on two types of sensed information is provided. A pulse is transmitted to the cardiac tissue. An activity signal is received. A first interval signal is also received and the pacing rate is adapted based on the first interval signal. A second interval signal is then received and the adapted pacing rate is verified using the second interval signal.

An implantable system including an atrial leadless pacemaker (aLP) and a ventricular leadless pacemaker (vLP), and methods for use therewith, are configured or used to terminate a pacemaker mediated tachycardia (PMT). One of the aLP or the vLP detects a PMT and informs the other one. The aLP initiates a PMT PA interval that is shorter than a PA interval that the aLP would otherwise use for atrial pacing if a PMT was not detected. The vLP initiates a PMT PV interval that is longer than the PMT PA interval. If an intrinsic atrial or ventricular event is detected before PMT PA interval or the PMT PV interval expires, then these intervals will be terminated, otherwise an atrial chamber will be paced if the PMT PA interval expires, and/or a ventricular chamber will be paced if the PMT PV interval expires. This should have the effect of terminating the PMT.

A pacemaker system is configured to sense electrical and mechanical activity of the heart tissue within a mammalian body and to generate a corresponding signal responsive to the sensed cardiac activity. The system includes a flexible electrical generator that contains EKG (ECG) electrodes for measuring electrical activity and ECHO piezoelectric electrodes for measuring mechanical activity of the heart and Doppler blood flow. The generator is embedded in a flexible shield, and is contoured to conform to the anatomy of the intercostal space to be embedded between the ribs of a patient and in the position overlying the heart. The system provides for pacing as well as defibrillation, responsive to the readings of the heart activities. A microprocessor analyzes a cardiac situation, based on the sensor's readings, produces a diagnosis, and generates control signals, such as “pacing pulse” in a life-threatening situation, or “observe” in a non life-threatening situation.