Diagnostics Using Light TRIZ Cases

Photoplethysmogram sensor analyzes signal quality to guide user wearing adjustments, resolving measurement accuracy versus signal distortion trade-offs.

A spiral-shaped optical coupling device directs excitation and measurement light through graded-index waveguides.

A wearable sensor system detects physiological changes during physical activity to enable personalized exercise prescriptions.

Endoprosthetic spacer integrates sensors and a controller to transmit real-time physiological data.

Integrated device holder maintains fixed spatial orientation between optical and material stimulus channels.

A light valve with individually addressable pixels correlates with detector pixels to reproduce captured images on a display surface.

A shaving system separates body hair from adhering substances for mineral and pH analysis.

A portable near-infrared device distinguishes hematoma tissue from normal tissue using ratiometric light analysis at multiple penetration depths.

Rotatable storage sub-unit aligns access ports with multiple chambers to collect detailed temporal and spatial GI data.

Decomposes bio-signal waveforms into component pulses to extract features from characteristic points, resolving noise interference in mobile healthcare.

Compact optical apparatus captures time-sequence brightness changes in living tissue images to calculate pulse wave velocity.

Processor analyzes reflected light signal to guide finger placement, ensuring accurate heart rate data collection without extra hardware.

A self-reference point method sets a skin reference using a linear image sensor to calculate blood component concentration from light intensities.

Flexible substrates enable continuous sweat monitoring without mechanical fixtures, resolving comfort versus stability trade-offs.

Removable cover on segmented nasal cannula blocks expiration flow to clear surgical path while maintaining oxygen supply.

Material status analysis determines water content to optimize wavelength selection, improving glucose measurement accuracy while reducing time.

Optical system distinguishes blood from gas using multi-wavelength detection, resolving visual estimation errors and improving transfusion accuracy.

Time-divided spread spectrum codes boost light intensity while minimizing noise, enabling accurate hemoglobin concentration measurements.

Segmented illumination devices probe skin layers at distinct angles to resolve measurement precision against device complexity.

Inertial sensors filter motion artifacts from photoplethysmogram data, enabling accurate arterial stiffness measurement during user activities.

Automated optical measurement system analyzes light scattering to characterize tissue roughness, eliminating manual pathology delays.

Opaque barrier walls optically isolate light sources from photo detectors in wearable sensors.

A scanned laser projection head detects subcutaneous veins using infrared light absorption to create a visible image on the skin surface.

A pulse wave sensor measures multi-wavelength signals at varying pressures to calculate intensity ratios for bio-information estimation.

Altering pixel emission areas near the front camera enables biometric measurement without adding hardware complexity.

Temporal encoding of wavelength bands overcomes high scattering in turbid media, enabling precise spectroscopy with large area detectors.

A small-area biometric sensor captures locally consistent optical properties using multispectral imaging to identify users.

A cranial implant with a clear PMMA dural window enables optical and ultrasonic access to the cerebral cortex while preventing cerebrospinal fluid leakage.

A photodynamic therapy instrument corrects fluorescence emission spectra using white light diffuse reflectance data to determine photosensitizer concentration.

A piezoelectric actuator ejects controlled fluid droplets with specific velocities and sizes for targeted ocular delivery.

A fluorescence observation unit uses a beam combining prism to guide collected light into an optical fiber.

A segmented fiberoptic probe measures white light reflectance to determine tissue optical properties and correct fluorescence signals.

A wrist-worn device integrates a biometric camera to capture mouth images for identity verification alongside an alcohol detection sensor.

Categorizing photons via time-of-flight removes superficial noise, resolving the trade-off between deep penetration and signal saturation.

Integrates optogenetic stimulation with fMRI measurements to identify dynamic functional connections and modulatory nodes in the brain.

Rotatable probe bodies adjust orientation on a flexible sheet holder to maintain signal contact while improving breathability and subject mobility.

Backscattered near-infrared light measures phase differences to detect bone fractures without ionizing radiation.

A urine test device uses a sliding strip tray to hold multiple reagent strips for simultaneous optical analysis.

A wearable skin contact member uses an overmolded flexible structure to enable smooth displacement for accurate physiological measurements.

Short wave infrared radiation measures relative absorption across spectral bands to determine subcutaneous tissue state without invasive blood sampling.

Directly deposited aluminum coating blocks visible, ultraviolet, and near-infrared light on the detector surface, eliminating fragile protective housings.

Traceable physical standards calibrate spectroscopic systems, eliminating instrument-dependent variations and ensuring accurate concentration calculations.

A weight scale integrates ultrasound imaging to measure ankle displacement and track patient weight trends.

Chromogenic photonic crystals in an intraocular implant change color under pressure, resolving the trade-off between non-invasive measurement and accuracy.

A portable transillumination device integrates yellow-orange, amber, and lime green LED light sources for medical imaging.

Optical coherence tomography detects beta-amyloid deposits in the retina using molecular markers for precise cross-sectional imaging.

A viewer emotion determination apparatus measures pupil diameter to calculate attention degrees.

Weighted-average PPG pulse calculation isolates arterial signals from mixed photoplethysmography waveforms.