Heart Stimulators TRIZ Cases
- Implantable Medical Device Coil Mode Switching for MRI Gradient Detection
An implantable medical device switches coil operation between biological sensing and magnetic field detection using existing electronic circuitry.
- CRT Parameter Determination Using Cardiac Acceleration Inflection Points
Analyzing cardiac acceleration inflection points across AVD intervals selects patient-specific CRT parameters.
- Implantable Device Automatic Sensing Configuration Selection
Controller evaluates multiple electrode signal configurations to select the optimal sensing mode for cardiac activity monitoring.
- Electrode Effectiveness Identification via Signal Correlation
Computing apparatus compares cardiac signal portions to identify effective electrodes, filtering out ineffective units for reliable therapy delivery.
- Pacemaker Algorithm Prevents Atrial Fibrillation via Simultaneous Pacing
A pacemaker algorithm delivers simultaneous atrial and ventricular pacing stimuli to maintain rhythm synchrony.
- Dynamic AV Delay Optimization for Cardiac Pacing
A stimulation control circuit dynamically updates atrioventricular delay parameters based on real-time conduction characteristics.
- Cardiac Pacemaker Enlarging Heart Chambers via Rate Control
Pacemaker stimulates elevated heart rates to enlarge heart chambers, addressing reduced volumes in sedentary patients with preserved ejection fraction.
- His Bundle Pacing Safety Modes for Implantable Cardiac Systems
An implantable cardiac system switches to tailored safety modes upon detecting electrode connection faults.
- Cardiac Stimulator Impedance Circuit for Ischemia Localization
An implantable cardiac stimulator uses multi-frequency impedance measurements to detect tissue changes.
- Dynamic AV Delay Adjustment for Cardiac Output Optimization
A cardiac rhythm management system adjusts atrioventricular delay using intrinsic and heart-rate-dependent delays to optimize pacing fusion.
- Dynamic Cardiac Resynchronization via Intrinsic Conduction Tracking
A cardiac pacing device calculates optimal atrioventricular delays using intrinsic ventricular activation timing to maintain synchronized contractions.
- Implantable Device Parameter Segmentation for Patient Safety
Segmented parameter access lets patients adjust lifestyle settings wirelessly, resolving the trade-off between adaptability and safety.
- Pacing Rate Adjustment for Hypertension Therapy
Alternating pacing waveforms with variable atrioventricular delays modulate baroreflex response to reduce blood pressure.
- Ventricular Blanking Period After Atrial Sensed Beats
Dynamic ventricular blanking periods reduce P-wave oversensing and improve R-wave detection accuracy in His bundle pacing systems.
- Transvascular Cardiac Nerve Stimulation via Sympathetic Activation
An intravascular electrode stimulates the sympathetic nerve to release norepinephrine, enhancing heart muscle contractions without causing cell damage.
- Estimating Capture Thresholds for Alternate Pacing Vectors
A method estimates capture thresholds for alternate pacing vectors using measured impedance and initial vector data.
- Adaptive Cardiac Pacing Mode Selection via Conduction Delay Analysis
A pacing system calculates atrial ventricular delays from intrinsic conduction intervals to determine optimal therapy.
- Cardiac Resynchronization Device Capture Verification
A cardiac resynchronization device infers ventricular capture using inter-ventricular conduction evidence from intrinsic cardiac responses.
- Dual-Chamber Pacing Without Continuous Communication
Segmented pacemakers use self-service rate selection to maintain coordination during AV block without continuous communication.
- Intracardiac Pacemaker Motion Sensor Atrial Tracking
An intracardiac ventricular pacemaker employs a motion sensor to detect atrial systolic events, resolving low-amplitude signal detection issues.
- Antitachycardia Pacing Routines for Ventricular Tachycardia Termination
A processor determines antitachycardia pulse routines with decreasing final cycle lengths to terminate ventricular tachycardia.
- Implantable Medical Device Insulation Breach Detection
Analyzing electrogram signal slope detects intermittent insulation breaches, preventing inadequate therapy delivery during life-threatening arrhythmias.
- Implantable Heart Stimulation Post-Treatment Pacing
Post-treatment pacing prevents tachycardia recurrence by gradually transitioning the heart back to a normal rhythm.
- Cardiac Capture Testing via Vectorogram Analysis
Two-dimensional vectorogram analysis detects cardiac capture status using spatial-temporal descriptors from intracardiac electrogram signals.
- Phase-Specific Parameter Determination for Circadian Physiological Variables
A system calculates phase-specific parameters of physiological variables using temporal means of predecessor values to identify diurnal and nocturnal phases.
- AV Delay Reduction for Cardiac Output Optimization
Dynamic AV delay adjustment reduces ventricular wall stress while maintaining adequate filling, optimizing cardiac output in compromised patients.
- Cardiac Pacing with Beta Blockers for Hypertension
Physiological input-based cardiac pacing adjusts outputs to restore heart rate, resolving the contradiction where beta blockers prevent pacing effectiveness.
- Pacing Device Stability Check for Loss of Capture Detection
A pacing device monitors asynchronous underlying rhythms to identify loss of capture events.
- Implantable Device Electromechanical Delay for Lead Position
An implantable medical device measures time delays between electrical and mechanical heart activities to detect lead movement.
- Paired Cardiac Pacing Inter-Pulse Interval Timing
Optimizes secondary pulse timing beyond the vulnerable refractory period to enhance left ventricular pressure while minimizing fibrillation risk.
- Implantable Medical Device Exposure Mode for MRI Safety
An implantable medical device switches to an exposure operating mode when detecting disruptive energy fields.
- Impedance-Based AV and VV Delay Optimization for CRT
Implantable device detects E-wave and A-wave fiducial points from cardiac impedance signals to adjust AV and VV delays.
- Cardiac Pacing Electrode Selection for Hemodynamic Synchronization
A cardiac pacing system selects optimal electrode configurations to synchronize heart chamber contractions and improve pumping efficiency.
- Dynamic AV Delay Search for Implantable Cardiac Devices
Implantable cardiac devices adjust atrioventricular delay search parameters using real-time heart rate detection.
- Relative Motion Sensor Therapy Control
Comparing activity sensor signals isolates symptomatic motion from environmental noise, enabling accurate therapy control for movement disorders.
- Cardiac Pacing Device AV Delay Adjustment
A cardiac pacing device adjusts AV delay settings using accelerometer signals to maintain optimal electro-mechanical response intervals.
- Anodal Capture Detection in Cross-Chamber Pacing
Comparing cross-chamber sense times distinguishes anodal capture from small electrode distances to prevent unintended right ventricular stimulation.
- Multi-site Pacing Capture Discrimination via Differential Sensing
Sensing circuitry generates a differential signal between cardiac electrical activity sensed at separate electrodes to discriminate capture status.
- Ventricular Tachycardia Detection Using RR Intervals
A pacemaker detects ventricular tachycardia using cardiac event intervals to deliver anti-tachycardia pacing.
- Dynamic Physiological Signal Storage Interval Adjustment
A recording apparatus adjusts its data storage time interval based on real-time signal quality assessment to ensure sufficient capture.
- Vagus Nerve Stimulation Device Coordinated with Cardiac Pacing
A nerve stimulation device coordinates vagus nerve activation with cardiac events using separate electrode systems.
- Implantable Cardiac Stimulation Device Autocapture PMT Avoidance
The system extends the post-ventricular atrial refractory period in response to extended AV intervals from backup pulses, preventing pacemaker-mediated tachycardia.
- Atrial Septum Electrode Pacing for Tachyarrhythmia Termination
Overdrive and underdrive pacing via atrial septum electrodes disrupts irregular electrical waves to restore regular cardiac rhythm.
- Data Transfer Module Voting Scheme for Race Condition Resolution
A data transfer module samples signals across clock domains using a voting scheme to determine valid values.
- Cardiac Rhythm Control via Premature Contraction Suppression
A cardiac system detects premature electrical activity and applies suppression pulses to synchronize heart contractions.
- Multi-site Pacing Vector Recharge Control
Dynamic voltage-based recharge timing resolves fixed period limitations in CRT systems, preventing electrode corrosion and optimizing therapy delivery.
- Electromechanical Switching for Cardiac Pacing Isolation
An electromechanical switch routes pacing signals to a single selected electrode via a moving contact mechanism.
- Cardiac Rhythm Management System Using Heart Rate Variability
A cardiac rhythm management system measures heart rate variability to dynamically adjust pacing and neurostimulation pulse parameters.