95 results about "Cardiac pace" patented technology

The embodiments described herein relate to a self-positioning, quick-deployment low profile transvenous electrode system for sequentially pacing both the atrium and ventricle of the heart in the "dual chamber" mode having an atraumatic tip comprising a domed head connected to a cylindrical sidewall, said cylindrical sidewall having a sloped proximal edge connected to a tapered coupling, said tapered coupling forming a smooth transition to an outer diameter of the insulated wire, and methods for deploying the same.

The invention relates to the field of medical instruments, in particular to a pace-making surgical robot based on a telescopic rotation and magnetic drive guide sheath tube. By combining the three-dimensional moving mechanical arm and the precise magnetic field control technology, precise control over the catheter and the pace-making wire is achieved. Compared with a traditional operation mode, shaking and instability in the operation process of a doctor can be effectively reduced, and risks such as wire perforation and inaccurate positioning in the catheter delivery process are reduced. In addition, by means of a non-contact operation mode controlled by a magnetic field, wounds to a patient are reduced, and operation precision and safety are improved. Meanwhile, an automatic control system and a non-radiation surgical operation mode are adopted, so that the radiation exposure risk of doctors is reduced, the cognitive burden is relieved, and the surgical efficiency is remarkably improved. The whole operation process is safer and more efficient, and improvement of the treatment effect of the cardiac pacing operation is facilitated.

A method and apparatus for treatment of heart failure by increasing secretion of endogenous naturetic hormones ANP and BNP such as by stimulation of the heart atria. Heart pacing is done at an atrial contraction rate that is increased and can be higher than the ventricular contraction rate. Pacing may include mechanical distension of the right atrial appendage. An implantable device is used to periodically cyclically stretch the walls of the appendage with an implanted balloon.

The invention belongs to the field of medical instruments, and particularly relates to an absorbable pace-making wire, which comprises a chest wall penetrating steel needle, a magnesium metal wire, a zinc film coated electrode, a single-strand wire, a coil and a curved needle, the magnesium metal wire is mounted at one end of the chest wall penetrating steel needle, and the zinc film coated electrode is mounted at one end of the magnesium metal wire; one end of the zinc film wrapped electrode is provided with the single-strand wire and the coil, one end of the single-strand wire and one end of the coil are provided with the curved needle, the magnesium metal wire is wrapped by a layer of absorbable material film (such as polycaprolactone material), and the electrode part of the magnesium metal wire in contact with the cardiac muscle is not provided with a polymer coating and is only wrapped by zinc foil. According to the invention, a temporary cardiac pacing effect can be achieved after an operation, and slow degradation and absorption can be gradually realized by a human body in about one year. Complication and secondary operation are avoided, performance is improved by means of innovative materials, electric signal transmission is guaranteed through structure optimization, and a better choice is provided for temporary pacing in cardiac surgery.

The present disclosure relates generally to pacing of cardiac tissue, and more particularly to adjusting delivery of His bundle or bundle branch pacing in a cardiac pacing system to achieve synchronized ventricular activation. A left bundle branch (LBB) cathode electrode may be implanted a left side of the septum of the patient's heart proximate to the LBB, and a right bundle branch (RBB) cathode electrode may be implanted on a right side of the septum of the patient's heart proximate to the RBB. One or both cathode electrodes may be used to deliver synchronized left and right bundle-branch pacing based on one or both of an atrial event and a ventricular event. A device for bundle branch pacing may be implanted based on determining whether an LBB block pattern or an RBB block pattern is present in monitored electrical activity.

A medical system configured to deliver a plurality of pacing signals to a heart of patient. In examples, the medical system is configured to provide at least first pacing signal to cause or assist in causing a first cardiac cycle of the heart and a second pacing signal to cause and / or assist in causing a second cardiac cycle of the heart. The medical system the medical system includes processing circuitry configured to control an interval separating the first pacing signal and the second pacing signal to cause the second pacing signal to be subsequent to a diastole indicator of the first cardiac cycle.

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.

The present invention discloses devices and methods for treating or repairing regurgitant heart valves such as the mitral valve and / or the tricuspid valve. Exemplary valvuloplasty devices can be placed in the coronary sinus to re-shape the mitral valve and reduce mitral regurgitation as well as tricuspid regurgitation. The present disclosure also provides improved techniques for cardiac pacing.

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.

This disclosure describes techniques for tracking respiration and respirophasic pacing using bioimpedance measurements. In one example, a device includes: therapy delivery circuitry configured to deliver cardiac pacing pulses to a heart of a patient via a plurality of electrodes; sensing circuitry configured to sense a bioimpedance signal of a patient; and processing circuitry configured to: identify a beginning of a current inspiration phase of the patient based on the bioimpedance signal; and control the therapy delivery circuitry to adjust a rate of the cardiac pacing during the current inspiration phase based on the identification of the beginning of the current inspiration phase.

A method of right atrial pacing of a heart of a patient includes the steps of: stimulating right atrial tissue of the heart using a right atrial lead of a dual chamber cardiac pacemaker to pace the heart with a stimulus architecture protocol; and stimulating local sympathetic and / or parasympathetic tissues with the stimulus architecture protocol proximate to the paced right atrial tissue causing nervous system activity that inhibits the autonomous nervous system to reduce blood pressure. A closed loop system operating according to this method and a cardiac pacing lead for implementing this method also are included within the scope of the illustrated embodiments.

A medical device is configured to deliver His-Purkinje pacing pulses according to multiple settings of a pacing control parameter and determine an electromechanical time delay from a ventricular electrical event to a fiducial point of the pressure signal for each of the pacing control parameter settings. The medical device may be configured to select an operating pacing control parameter from the pacing control parameter settings based on a determined electromechanical time delay being less than a threshold interval. The medical device may deliver pacing pulses to the His-Purkinje conduction system according to the selected operating pacing control parameter.

Systems and methods for cardiac pacing are described in this document. A medical system includes an electrostimulation circuit to generate His-bundle pacing (HBP) pulses to capture a His bundle, and LV pacing (LVP) pulses to capture a left ventricle. A sensing circuit may sense a cardiac activity, such as an atrial or an LV cardiac electrical activity. The system includes a control circuit controlling the delivery of HBP and LVP pulses. The HBP and LVP may be delivered concurrently or sequentially. In an example, the LVP pulses may be delivered based on a His-bundle capture status in response to the HBP pulse. The system may adjust one or more His-bundle stimulation parameters based on the His-bundle capture status.

The present disclosure pertains to cardiac pacing methods and systems, and, more particularly, to cardiac resynchronization therapy (CRT). In particular, the present disclosure pertains to determining whether a patient is experiencing atrial fibrillation (AF). If the patient is experiencing AF, the efficacy of CRT is determined. A signal is sensed in response to a ventricular pacing stimulus. Through signal processing, a number of features are parsed from the signal and a determination is made as to whether the ventricular pacing stimulus evoked a response from the ventricle.

An implantable medical device (IMD) comprises a plurality of deep tines configured to be advanced into a septum of a heart of a patient in different directions that are not parallel to a longitudinal axis of the implantable medical device, wherein each deep tine of the plurality of deep tines is configured to deliver cardiac pacing to cardiac tissue distal to a chamber of the heart in which the IMD is implanted, and one or more shallow electrodes engageable with the septum, wherein the one or more shallow electrodes are configured to deliver cardiac pacing to the chamber of the heart in which the IMD is implanted.

The utility model provides an in-vitro temporary cardiac pacing electrode fixing device, which relates to the technical field of medical devices and comprises a pacemaker main body, an electrode wire and a fixing component, the electrode wire and the fixing component are arranged at one end of the pacemaker main body, and the fixing component is arranged at the bottom of the pacemaker main body and comprises a first mounting seat mounted at the bottom of the pacemaker main body. A sleeve is arranged at the bottom of the first mounting seat, a fixing block is fixedly connected to one end, close to the first mounting seat, of the sleeve, a sliding block is slidably connected to one end, away from the fixing block, of the sleeve, an electrode plate is arranged at one end, away from the pacemaker body, of the electrode wire, and a connecting piece is arranged on the side face of the protective shell and connected with the side face of the pacemaker body through the connecting piece. When the electrode wire winding device is used, the electrode wire is firstly placed in the inner cavity of the protective shell, then the rotary knob is manually twisted clockwise, and therefore the electrode wire can be wound, and a patient can be conveniently examined and nursed.

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.

The transesophageal electrocardio detection and pace-making catheter and the integrated device comprise a catheter main body, the catheter body is used for entering the esophagus; electrodes are respectively arranged at a plurality of different positions of the catheter main body; the electrodes comprise an electrocardio electrode and a discharge electrode; the electrocardio-electrode is used for acquiring an electrocardio-signal; the discharge electrode is used for outputting cardiac pacing electrical stimulation signals. The main control module is in electric signal connection with the electrocardio-electrode to obtain an electrocardio-signal; the main control module is in electric signal connection with the discharge electrode and outputs cardiac pacing electrical stimulation signals to the discharge electrode. Moving the catheter main body to obtain electrocardiosignals of the catheter main body at different positions; the electrocardiosignals of the catheter body at different positions are compared, and the catheter body position with the maximum electrocardiosignal amplitude is selected to serve as the transesophageal electrical stimulation cardiac pacing position. According to electrocardiosignal characteristics obtained at different positions, the optimal position of cardiac pacing electrical stimulation can be determined, and corresponding cardiac pacing electrical stimulation signals are output, so that cardiac pacing is safer and more effective.

Cardiac events classified as ventricular events after atrial events may be reclassified as negligible events using the illustrative devices and methods described herein. For example, cardiac events classified as ventricular events within a time window following after atrial events. The negligible events will not be inadvertently used to affect cardiac pacing therapy including, for example, ventricular sense response pacing.

An implantable medical device system delivers a pacing pulse to a patient's heart and starts a first pacing interval corresponding to a pacing rate in response to the delivered pacing pulse. The system charges a holding capacitor to a pacing voltage amplitude during the first pacing interval. The system detects an increased intrinsic heart rate that is at least a threshold rate faster than the current pacing rate from a cardiac electrical signal received by a sensing circuit of the implantable medical device. The system starts a second pacing interval in response to an intrinsic cardiac event sensed from the cardiac electrical signal and withholds charging of the holding capacitor for at least a portion of the second pacing interval in response to detecting the increased intrinsic heart rate.

The utility model relates to a heart pace-making structure and a lead-free pacemaker, the heart pace-making structure comprises a flexible battery part, a head part used for being connected with a fixing structure and an electrode installed on the battery part or the head part, the head part is used for bearing a control system, and the electrode is electrically connected with the control system. The battery part is connected to the head part and is used for providing a power supply for the control system, and the battery part has a preassembled state and an unfolded state; in a preassembled state, the battery part is shrunk in the sheath tube; and in the unfolding state, the battery part is unfolded around the head part and is flat as a whole. The pacemaker can be designed to have a larger battery space than a traditional similar product, the service life is longer, the follow-up replacement cost of a patient is reduced, the installation page is more stable, and the risk that the pacemaker shifts or falls off can be effectively reduced.

The present invention discloses a shaped floating temporary cardiac pacing electrode, which belongs to the technical field of temporary cardiac pacing. A shaped floating temporary cardiac pacing electrode comprises an electrode catheter, a pressure sensor is provided at the end of the electrode catheter, a balloon is provided near the pressure sensor, an electrode assembly is provided on the electrode catheter, a wire splitter is provided at the end of the electrode catheter, and a pressure display is provided on the wire splitter. The present invention solves the problem that the head electrode of the existing patent is easily dislocated when the patient's body position changes during use, and the pacing function cannot be fully realized. The present invention realizes cardiac pacing while monitoring pressure and pacing impedance, and can timely identify whether the head end of the electrode catheter is dislocated, avoiding complications such as myocardial perforation caused by the detachment of the head end of the electrode catheter, providing more groups of electrode and ventricular muscle contact options, avoiding the problem of being unable to pace the ventricle when the head end of the electrode catheter is dislocated, and realizing multiple protections.

Cardiac events that are classified as ventricular events following an atrial event can be reclassified as negligible events using the exemplary apparatus and methods described herein. For example, a cardiac signaling event is classified as a ventricular event within a time window following an atrial event. This negligible event will not be unintentionally used to influence cardiac pacing therapy, including, for example, ventricular sense-response pacing.

The utility model provides a cardiac pacing device, which comprises a first electrode part, a second electrode part, a first electrode lead, a second electrode lead, an adapter and a pacemaker, and is characterized in that the first electrode part is used for being embedded into subcutaneous tissue or being attached to skin; the second electrode part is opposite to the first electrode part in polarity and is used for being inserted into the heart for pacing the heart; the first electrode part is connected with the first output end of the adapter through a first electrode wire, the second electrode part is connected with the second output end of the adapter through a second electrode wire, the pacemaker is connected with the input end of the adapter, and pulse current is provided for the first electrode part and the second electrode part through the adapter, the first electrode wire and the second electrode wire. The second electrode part can stimulate the heart and carry out pacing on the heart; the first electrode part is not easy to separate from the skin, and the stability of electric pulse circulation can be enhanced; and the adapter and the pacemaker can be repeatedly used, so that the resource consumption is reduced, and the use cost is reduced.

The present application relates to the technical field of cardiac pacing electrode, in particular to a telescopic cardiac pacing electrode, which comprises a pulse pacemaker and an electrode lead, the electrode lead comprises an insertion end, a connecting sleeve, a conductive core wire and an electrode end, the insertion end, the connecting sleeve and the electrode end are sequentially fixedly connected, the insertion end is insertedly matched with the pulse pacemaker, the connecting sleeve is internally provided with the conductive core wire, the two ends of the conductive core wire are respectively connected with the insertion end and the electrode end, and the pulse pacemaker generates a pulse electric signal which is transmitted to the inside of an organ through the electrode end; in the present application, the telescopic members and the fixing members are staggered in the subcutaneous section, the initial length is the shortest, the spacing of the fixing members anchored in the subcutaneous tissue is increased with the growth of the patient's trunk, the telescopic members are axially stretched, the length adjustment range covers the entire growth period from childhood to adulthood, the risk of electrode lead tightness, electrode displacement or breakage is fundamentally eliminated, and secondary surgery is avoided.

The invention is entitled "Detecting and mapping phrenic nerve through pacing." The invention relates to an apparatus comprising an interface and a processor. The interface is configured to receive one or more magnetic localization signals from one or more position sensors coupled to one or more body surface patches attached to a body of a patient, the magnetic localization signals being indicative of respective positions of the position sensors. The processor is configured to (i) detect an unintentional stimulation of a phrenic nerve of the patient, the unintentional stimulation occurring due to cardiac pacing applied by an intracardiac electrode in a heart of the patient, (ii) estimate, based on the magnetic localization signals, a motion of one or more of the body surface patches occurring during the detected stimulation of the phrenic nerve, (iii) estimate, based on the estimated motion of the body surface patches, a distance between the pacing electrode and the phrenic nerve, and (iv) send an output derived from the estimated distance to an output device.

The present invention discloses a human body detection first aid device for orthostatic hypotension, the first aid device comprises a shell, in which a blood pressure measurement module, a battery compartment, a posture measurement module, a fixing module, a cardiac pacing and data transmission module are arranged in sequence from back to front, and a battery compartment is arranged at the front end of the blood pressure measurement module, a posture measurement module is arranged at the front end of the battery compartment, a fixing module is arranged at the front end of the posture measurement module, and a cardiac pacing and data transmission module is arranged at the front end of the fixing module; the present invention can implant a miniature medical device through minimally invasive intervention, without incision scars, and does not affect the appearance, and can dynamically monitor the blood pressure, heart rate and body position changes of patients with orthostatic hypotension in real time, and adjust according to the characteristics of physiological changes, so that the patient's lifestyle is not affected and the compliance is good, and at the same time, it has a wireless data transmission function for analysis and reading by clinical doctors.

Systems and methods are disclosed for generating a pace-mapping prediction model. Techniques are provided that utilize a training dataset associated with biometrics of patients' hearts, including electrophysiological data associated with cardiac arrhythmia, pace-mapping datasets, and correlation data measuring the degree of correlation between the pace-mapping datasets and the electrophysiological data. Based on the training dataset, the pace-mapping prediction model is trained to predict a degree of correlation between a patient's electrophysiological data and a pace-mapping dataset. Based on the predicted degree of correlation, a cardiac location in the heart of a patient is predicted as the location for the next pace-mapping. Further systems and methods are disclosed for generating a pacing maneuver prediction model. The pacing maneuver prediction model is trained to predict interval measurement based on a pacing maneuver obtained during cardiac pace-mapping.

An implantable medical device (IMD) comprises a plurality of deep tines configured to be advanced into a septum of a heart of a patient in different directions that are not parallel to a longitudinal axis of the implantable medical device, wherein each deep tine of the plurality of deep tines is configured to deliver cardiac pacing to cardiac tissue distal to a chamber of the heart in which the IMD is implanted, and one or more shallow electrodes engageable with the septum, wherein the one or more shallow electrodes are configured to deliver cardiac pacing to the chamber of the heart in which the IMD is implanted.

Disclosed are a pacing control method, a pacing control apparatus, and a medical device. The pacing control method comprises: obtaining an actual heart rate of a patient; and when the actual heart rate meets a preset low heart rate condition, performing cardiac pacing on the patient by using a preset pacing frequency, the preset low heart rate condition being used for representing that the patient is in a life-critical state. The method takes the patient in the life-critical state where the heart rate is severely too slow or even cardiac arrest occurs as an object needing pacing support, and achieves the effect of timely and effectively pacing to support the life of the patient and the effect of avoiding, to a great extent, unnecessary pacing for the patient and the pain of the patient caused by pacing stimulation, especially cannot trigger pacing to occasional bradycardia, non-severe bradycardia, or transient arrest.