756results about "Heart stimulators" patented technology

Provided herein are methods of treating a patient comprising providing a medical apparatus comprising an external system and an implantable system, implanting the implantable system, and delivering at least one of power or data to the implantable system with the external system. The external system comprises: at least one external antenna configured to transmit a first transmission signal to the implantable system; an external transmitter configured to drive the at least one external antenna; an external power supply; and an external controller. The implantable system comprises: at least one implantable antenna configured to receive the first transmission signal from the first external device; an implantable receiver; at least one implantable functional element configured to interface with the patient; an implantable controller; an implantable energy storage assembly; and an implantable housing surrounding at least the implantable controller and the implantable receiver. Medical apparatus are also provided.

This disclosure is directed to systems and techniques for detecting change in patient health based upon peak and non-peak patient activity data. In some examples, the peak and non-peak patient activity data correspond to one or more peak (time) periods and the one or more non-peak periods, respectively, where at least one peak period and at least one non-peak period corresponds a highest activity level and a lowest activity level, respectively, for a single day. If a change in patient health is detected, the techniques described herein may direct a medical device to generate for display output indicating the detection of the change in patient health.

A system for application of neurostimulation includes an outer sheath, an elongate inner member in the outer sheath and movable relative to the outer sheath. The inner lumen has a distal end. An expandable member is coupled to the distal end of the inner member and is in the outer sheath. The expandable member is self-expanding upon from a compressed state in the outer sheath to an expanded state out of the outer sheath. The expandable member includes a distal portion including a plurality of wires woven together and a proximal portion including the plurality of wires extending parallel to a longitudinal axis. The system includes a plurality of electrode assemblies outward of the expandable member and circumferentially spaced around the expandable member. Each electrode assembly is coupled to two of the wires extending parallel to the longitudinal axis. Each electrode assembly includes a plurality of longitudinally-spaced electrodes.

Methods and apparatus disclosed for treating pain and mobility impairments include synergistic application of various stimuli to a patient. These stimuli can comprise serial and sequential combinations of predetermined subatmospheric pressure values, time-varying voltage waveforms applied to electrodes in contact with different portions of a patient's skin in a matter that produces currents which stimulate nerve fibers that activate muscles, and direct practitioner-assisted mechanical movement of tissue. Apparatus and systems for applying the treatment methods are disclosed.

An implantable lead configured to be implanted in an anterior mediastinum of a patient. The implantable lead includes a generator interface and a lead body coupled to the generator interface. The generator interface is configured to couple the implantable lead to a generator of an implantable treatment device. The lead body includes a sternal portion configured to be positioned in the anterior mediastinum to engage a posterior portion of a sternum of the patient, and a heart wall portion configured to be positioned in the anterior mediastinum to engage a heart wall of a heart of the patient. At least one of the sternal portion or the heart wall portion is configured to deliver treatment energy to the heart of the patient.

The utility model relates to the technical field of cardiovascular intervention. The utility model provides an electrode wire guiding sheath. The electrode wire guiding sheath comprises a handle provided with a bending adjusting piece and a sheath tube body. The near end of the sheathing canal body is connected with the handle, a bending adjusting steel wire channel extending from the near end to the far end is arranged in the canal wall of the sheathing canal body, the bending adjusting steel wire is arranged in the bending adjusting steel wire channel, and the bending adjusting steel wire is connected with a bending adjusting piece of the handle at the near end of the sheathing canal body so that bending of the bending adjusting steel wire can be adjusted through the bending adjusting piece. A tearing line groove extending from the near end to the far end is further formed in the pipe wall of the sheathing pipe body, and the tearing line groove and the bending adjusting steel wire channel do not coincide. According to the guide sheath, the electrode wire can be shaped through the bending adjusting piece and the bending adjusting steel wire, meanwhile, the tearing line groove is formed in the tube wall of the sheath tube body, the tearing line groove and the bending adjusting steel wire do not interfere with each other, and the sheath tube body can be conveniently withdrawn after the electrode wire is implanted into the heart.

A medical device is configured to receive cardiac electrical signals and sense ventricular event signals from the cardiac electrical signals. The medical device may start a validation window in response to sensing a ventricular event signal and determine if the ventricular event signal is a valid event signal or an invalid event signal based on processing of a different cardiac electrical signal than the cardiac electrical signal from which the ventricular event signal was sensed.

A system and method for spinal fusion that can include: a spinal cage body that includes at least one defined graft window cavity; a plurality of electrodes exposed on the surface of the spinal cage body; control circuitry configured to drive the plurality of electrodes in a stimulation mode; wherein there is at least a targeted osteoinduction region and a targeted non-osteoinduction region that are immediately adjacent to the spinal cage body; and wherein the control circuitry includes configuration to excite the plurality of electrodes during the stimulation mode for generation of a current density in the targeted osteoinduction region and targeted non-osteoinduction region according to targeted levels of bone growth.

A battery includes a frame defining an interior space. The frame includes an inner layer including a material having a negative Poisson's ratio (NPR material), and an outer layer disposed on the inner layer such that the inner layer faces the interior space and the outer layer faces an exterior of the frame. The battery includes an electrolyte contained in the interior space of the frame; a positive electrode disposed in the interior space of the frame, the positive electrode including a positive electrode active material; and a negative electrode disposed in the interior space of the frame, the negative electrode including a negative electrode active material.

A device comprising: an elongated housing extending from a proximal end to a distal end along a longitudinal axis, the elongated housing being configured to be implanted wholly within a chamber of a heart; a first electrode extending distally from the distal end of the elongated housing, the first electrode comprising an elongated body defining a helix; a second electrode disposed on the distal end of the elongated housing, wherein the second electrode is configured to contact wall tissue of the chamber without penetrating the wall tissue; and one or more fixation features disposed on or about the distal end of the elongated housing, each fixation feature of the one or more fixation features defining a textured outer surface configured to interface with the wall tissue of the chamber to inhibit unintended movement of the elongated housing relative the wall tissue.

The illustrated embodiments include an apparatus having a programmable, implantable pacemaker with a controllable pacing rate; and a blood pressure monitoring device having an output communicated to the pacemaker. The pacemaker selectively and automatically modulates pacing rate in response to monitored blood pressure to reduce hypertensive blood pressure in a patient or treatment for DCHF (HPpEF). The embodiments also include a. method tor operating a pacing device to treat drug resistant hypertension which includes the steps of monitoring blood pressure; and controlling rate modulation in the pacing device in response to the monitored blood pressure to selectively prevent excessive pacing to reduce mean arterial blood pressure fay either inhibiting rate modulation in the pacing device or by changing rate modulation parameters.

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 present invention relates to an implantable device (200) for stimulating a heart (H) and lowering blood pressure, comprising: a stimulation unit (201) configured to stimulate the His bundle (HIS) or the left-bundle branch (LBB) of the heart (H), and a sensing unit (202) for detecting atrial activity of the heart (H). According to the present invention the stimulation unit is configured to stimulate the His bundle (HIS) or the left bundle branch (LBB) immediately before or immediately after detection of an atrial activity.

In some examples, an implantable medical device includes a device body extending from a proximal portion to a distal portion along a longitudinal axis, a fixation component, and an electrode interface assembly. The fixation component includes a penetrator tine extending away from the distal portion of the device body and configured to penetrate a tissue. The electrode interface assembly includes a leadlet extending away from the distal portion of the device body, an elongated body extending away from the distal portion of the device body the elongated body defining a recess and a groove, wherein the groove is configured to receive the leadlet, and an electrode extending from the elongated body and disposed within the recess.

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 module includes: a conversion stage (110) receiving as input a sampled activity signal (ACTk) representative of the instantaneous activity of the patient and delivering as output a first target value (Xk) by application of a predetermined activity / heart rate function (F(ACT)); a recursive digital low-pass filter (130) calculating over a predetermined time a moving average of the first target value (Xk) delivered by the conversion stage (110) and giving as output a second target value (Zk); and a combiner stage (140) receiving as input the first target value (Xk) and the second target HR value (Zk) delivered by the first digital low-pass filtering stage (130), determining the maximum of the two target values ​​and giving as output the setpoint value (HRk) to control the stimulation frequency to the patient's activity.

Implanted pulse generators with reduced power consumption via signal strength-duration characteristics, and associated systems and methods are disclosed. A representative method for treating a patient in accordance with the disclosed technology includes receiving an input corresponding to an available voltage for an implanted medical device and identifying a signal delivery parameter value of an electrical signal based on a correlation between values of the signal delivery parameter and signal delivery amplitudes. The signal delivery parameter can include at least one of pulse width or duty cycle. The method can further include delivering an electrical therapy signal to the patient at the identified signal delivery parameter value using a voltage within a margin of the available voltage.

The utility model provides a novel cardiac pacemaker lead fixing device belongs to medical appliance technical field, this novel cardiac pacemaker lead fixing device, include: lead body, the inside of lead body is equipped with thin metal wire, and the surface is provided with rotating handle. The utility model: the lead body is passed through the protection sheath pipe, and the anchor head end structure of lead body one end is moved to the inside of heart, until the main helical silk of nickel titanium alloy is made on the anchor head end and is fixed with the outer layer of myocardium, further adjusts the rotating handle on the surface of lead body to make the electrode end continue to move, the diameter between a plurality of inner layer's auxiliary micro helical silk changes in the process of rotating to drive a plurality of anchor block rotation and move and pass through endocardium, cooperate a plurality of anchor block surface's anchor hook and enhance the stability of lead body fixed, realize the purpose of anchor head end grading anchor operation.

Described herein is a fully-differential receiver (102) for use with an implantable medical device (IMD) (402) and configured to receive conducted communication signals that are transmitted by another IMD or an external device. The fully-differential receiver (102) includes a fully-differential preamplifier (112), a fully-differential buffer (122), a first comparator (142), a second comparator (152), and an AC coupling network (132) coupled between differential outputs of the fully-differential buffer (122) and a coupled together differential pair of inputs of the first and second comparators (142, 152). A differential pair of inputs of the fully-differential receiver (102) comprise the differential pair of inputs of the fully-differential preamplifier (112), and a differential pair of outputs of the fully-differential receiver (102) comprise a first output of the first comparator (142) and a second output of the second comparator (152). In order to conserve power, the fully-differential receiver (102) is selectively changed from operating in a first mode to operating in a second mode, and vice versa.

The invention relates to an implantable medical device (1) for discriminating between an active phase and a resting phase of a human or animal patient. During operation, the implantable medical device (1) carries out the following steps: a) determining, with a detection unit (31), at least two of the following parameters of a patient carrying the implantable medical device (1) in an implanted state: i) an acceleration, ii) an impedance of a body structure, iii) a body temperature, and iv) a cardiac rate; b) comparing the at least two determined parameters with predeterminable thresholds, wherein an individual predeterminable threshold is assigned to each parameter; and c) classifying a physical state of the patient as a resting phase if at least two of the following criteria are fulfilled: i) the determined acceleration lies below a first predeterminable threshold, ii) the determined impedance lies below a second predeterminable threshold, iii) the determined body temperature lies below a third predeterminable threshold, and iv) the determined cardiac rate lies below a fourth predeterminable threshold; otherwise classifying the physical state of the patient as an active phase.

According to an aspect, an improved modular wearable medical device for monitoring a patient's ECG signals and providing therapeutic shocks in the event of a cardiac arrhythmia is provided. The device includes a garment, a plurality of ECG sensing electrodes that are permanently coupled at first predetermined locations on the garment, at least one pocket or receptacle disposed on the garment and configured to removably secure a module with device electronics within a housing to the garment, a plurality of wires or cables permanently integrated into the garment and operably coupling the plurality of permanently coupled ECG sensing electrodes with the sensor interface module, a plurality of therapy electrodes removably coupled to second predetermined locations on the garment, gel deployment circuitry, one or more capacitors, and a therapy control module configured to control the provision of the therapeutic shocks.

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.

In some examples, controlling delivery of CRT includes controlling an implantable medical device to deliver ventricular pacing according to a sequence of different values of a CRT parameter and acquire first and second electrograms from respective first and second electrode vectors. For each value of the CRT parameter, a value of a comparison metric of a first activation interval between a first fiducial point of a cardiac cycle detected in the first electrogram and an occurrence of a second fiducial point of the cardiac cycle and a second activation interval between the first fiducial point and the occurrence of the second fiducial point detected in the second electrogram can be determined. A target value of the comparison metric can be identified and an updated value of the CRT parameter determined based on the target value. The system can then control the IMD to deliver ventricular pacing at the updated value of the CRT parameter.

Techniques for determining whether a ventricular depolarization is a premature ventricular contraction (PVC) depolarization can include processing circuitry of a medical system that identifies an interval from a maximum slope point to a minimum slope point of each of a plurality of ventricular depolarizations and, for each of the plurality of ventricular depolarizations as a current ventricular depolarization, determines that an interval from a maximum slope point to a minimum slope point of the current ventricular depolarization, a previous adjacent ventricular depolarization of the plurality of ventricular depolarizations, and a subsequent adjacent ventricular depolarization of the plurality of ventricular depolarizations satisfies one or more slope criteria. The processing circuitry determines, based on the interval from the maximum slope point to the minimum slope point that satisfies the one or more slope criteria, that the current ventricular depolarization is a PVC depolarization.

A stabilizer sleeve is disclosed for use with cardiac implantable electronic device leads. The sleeve comprises a tubular body sized to receive the lead and shaped to bias the lead toward a desired anatomical location, thereby reducing migration, dislodgement, and interference with cardiac structures. The sleeve may be introduced with the lead as a unitary assembly or added after lead placement. Various embodiments include a slitted body for expansion, radiopaque markers for visualization, detachable nose-cone tips for guidewire tracking, and antimicrobial coatings. The sleeve may be formed of polymers, alloys, or composite materials, and may include features such as texturing or anchoring projections for tissue engagement. Applications include positioning within a tricuspid valve commissure to minimize regurgitation and stabilizing left ventricular leads within branches of the coronary sinus. The device and methods described provide improved long-term stability and performance of implanted cardiac leads.

In some examples, a system can be used for delivering cardiac resynchronization therapy (CRT). The system may include a pacing device configured to be implanted within a patient. The pacing device can include a plurality of electrodes, signal generation circuitry configured to deliver ventricular pacing via the plurality of electrodes, and a sensor configured to produce a signal that indicates mechanical activity of the heart. Processing circuitry can be configured to identify one or more features of a cardiac contraction within the signal, and determine whether the contraction was a fusion beat based on the one or more features.

To provide systems, methods, and computer program products for enhanced computational heart simulations.SOLUTION: Methods to enhance the computational localization of cardiac arrhythmia sources are provided. A method may include receiving, from a first user, clinical data associated with a clinical case. The clinical data may include a patient anatomic information, diagnostic and / or treatment modalities, treatment parameters, treatment outcome, and medical literature. The clinical case may be indexed based on a first plurality of characteristics associated with the clinical data. The indexing may include associating at least a portion of the clinical data with a computational simulation of cardiac arrhythmia having a second plurality of characteristics matching the first plurality of characteristics. At least a portion of the clinical data associated with the indexed clinical case may be provided to a second user in response to a query from the user. Related systems and articles of manufacture are also provided.SELECTED DRAWING: Figure 1

Devices for energy harvesting are disclosed herein. The present disclosure concerns a device (400) comprising: an energy harvesting mechanism (422) configured to produce energy from physiological motion of a patient; one or more electrodes (402a, 402b, 402c) configured to deliver electrical stimulation to the patient; a power source (420) operably coupled to the energy harvesting mechanism and the one or more electrodes; processing circuitry (414); and a memory (418) operably coupled to the processing circuitry and storing instructions that, when executed by the processing circuitry, cause the device to perform operations comprising: determining (702) a power output of the energy harvesting mechanism; determining (704) a stimulation signal configured to adjust the physiological motion to increase the power output of the energy harvesting mechanism; delivering (706) the stimulation signal to the patient using the one or more electrodes; and charging (708) the power source using the energy harvesting mechanism.

The utility model discloses a fixing strap for a temporary pacemaker, which comprises a shoulder strap and a binding strap, an extension bag is sewed below the shoulder strap, a zipper is sewed on the surface of the extension bag, a weight is stored in the extension bag, and a binding surface is arranged at the bottom end of the extension bag; a traction piece is arranged on the surface of the extension bag and used for changing the position of the extension bag, and the fixing band is used in cooperation with the fixing band at the position, close to the apex of the right ventricle, of the extension bag after being worn, so that the fixing band can keep a good attaching effect whether daily activities or mild exercises are carried out; and the risk of complications caused by displacement of the pacemaker or poor contact of the electrodes is reduced. The bonding head is bonded to the bonding female end area by pulling the traction belt, it can be ensured that the position of the extension bag after adjustment is kept stable, that is, the position of the extension bag is changed through traction of the traction belt, and the position of the extension bag is accurately adjusted.

A device comprising: an elongated housing extending from a proximal end to a distal end along a longitudinal axis; a first electrode and a second electrode extending distally from the distal end of the elongated housing; and one or more tissue retention features defined by the distal end of the elongated housing. Each tissue retention feature may include a first opening disposed on the distal end of the elongated housing, a second opening disposed on an outer surface of the elongated housing between the proximal end and the distal end, and a channel connecting the first opening and the second opening. One or more openings of the first opening or the second opening is configured to allow ingrowth of the wall tissue into the channel via the one or more openings.