Stethoscope TRIZ Cases

Handheld optical detector replaces bulky ultrasound with interferometric scanning to assess heart function in noisy environments.

Disposable abdominal acoustic sensor detects gastrointestinal sounds to replace invasive diagnostic tests and manual palpation.

Conformable patch with pressure sensor array and control system processes signals to detect heart valve activity.

Audio cough detection uses principal component analysis to extract diagnostic features from sound signals.

A heart sound acquisition device uses a movable sensor and biasing portion to maintain consistent contact pressure.

Restoring filtered cardiac signals enables accurate ST-segment detection despite noise reduction trade-offs.

A chest-worn patch sensor integrates ECG, IPG, PPG, and PCG waveforms to measure vital signs.

Elastomer acoustic coupling transmits body sounds while isolating sensors from movement noise and skin friction.

Acoustic sensor detects aortic valve closure to mark pulse transit time, resolving ECG mechanical activity inaccuracies.

Thoracic inductance coils detect volume variations to calculate subdiaphragmatic aortic flow without surgical intervention.

A sepsis monitor uses noninvasive sensors to measure physiological parameters for early warning.

Controlled vibratory impactors with integrated sensors resolve the trade-off between placement precision and surgical time in hip replacement procedures.

A wheezing detection apparatus analyzes breathing sound signals by converting them into frequency spectra to identify respiratory conditions.

Indented gripping surfaces on the chestpiece resolve grip comfort trade-offs by enabling seamless transitions between positions.

Automatic calibration circuits resolve manual timing delays by applying transformation matrices to accelerometer signals for accurate therapy delivery.

Deformable attachment sub-assembly secures acoustic sensors to patient skin using flexible materials and adhesive layers.

A center-loaded accelerometer-based detector captures high-frequency heart sounds with minimal chest load.

Staged evaluation of pacing parameters reduces clinical time while optimizing cardiac resynchronization therapy.

An integrated cleaning assembly activates a fluid dispenser via the stethoscope head's passage, resolving contamination risks and reducing cleaning time.

Convolutional neural networks analyze auditory signals in a digital stethoscope to forecast respiratory events and manage patient privacy via cloud services.

Movable connection means link acoustic sensors to a rigid structure, allowing controlled movement within predetermined degrees of freedom.

Elastic membrane captures pelvic floor muscle vibrations for acoustic detection.

A medical instrument combines acoustic listening with electrical heart tracing for remote patient assessment.

Acoustic respiratory sensor detects probe-off conditions by comparing signals with a secondary optical sensor.

Snap-fit retaining members join the cuff assembly to the control unit housing via a dedicated interface member.

A flexible ear plug features a movable valve assembly with a rotating knob and shielded disk to vary sound attenuation levels.

A laser Doppler flowmeter measures blood flow velocity while a photoplethysmography monitor detects pulse waveforms to calculate blood pressure.

Digital stethoscope captures bovine lung sounds, converting them to numerical scores that resolve subjective diagnosis delays.

Integrating multiple independent monitoring functions into a single garment structure improves measurement precision while managing device complexity.

A handheld diagnostic device captures sensor data and transmits it to a user device for AI analysis.

Electroactive polymer band constricts limb blood flow to measure pressure, replacing bulky inflatable cuffs with compact wearable designs.

A networked electronic stethoscope integrates wireless sensors to digitize and process diverse physiological signals for expanded diagnostic capabilities.

A head-mounted support device positions inflatable earpieces and delivers settable compound for user customization.

Wearable intraoral device measures breathing sounds via a dedicated acoustic cavity to determine physical fatigue levels.

Accelerometers detect heart sound vibrations to calculate center of mass, resolving signal quality issues from implantable device orientation.

An acoustic body transfers heartbeat sounds to a microphone through matched density and propagation speed.

Reconstructs high-fidelity heart sound segments from low-rate acceleration data to resolve power consumption and storage constraints in ambulatory monitoring.

Acoustic sensor uses impedance matching element to detect heart sounds through clothing, eliminating direct skin contact for comfortable extended wear.

A garment-based system isolates fetal cardiac signals using digital filtering and non-linear subtraction.

A handheld device uses a spherical bell microphone and electrocardiogram sensors to capture physiological signals.

A radar apparatus detects user movement and respiration using electromagnetic waves without physical contact.

A wearable device detects auscultation data signals and physiological parameters through integrated acoustic sensors.

Microphone captures breathing sounds to extract intensity and rate metrics, replacing complex gas analysis equipment with an acoustic system.

A disposable sleeve covers the stethoscope head and tubing to isolate medical devices from patient contact.

Integrating multiple medical sensors into a smartphone reduces device complexity and cost while enabling rapid remote diagnosis.

A multi-sensor smart patch integrates acoustic sensors and electrodes to collect physiological data from multiple body locations.

Acoustic sensors detect heart sounds to optimize pacing intervals, replacing invasive echocardiography.

A contingent vagus nerve stimulation system applies electrical signals to the vagus nerve based on detected seizure activity.

A closed cavity increases air density to amplify heart sounds, resolving the trade-off between measurement precision and device complexity.