Medical Devices TRIZ Cases
- Cardiotomy Reservoir Partitioning for Fat Removal and Leukocyte Control
A cardiotomy reservoir uses layered partitions to manage blood outflow paths.
- Ergonomic Button Arrangement for Hand-Held Injection Device
Recessed discrete configuration button prevents accidental pressing while dial dose mechanism simplifies thumb movement for one-handed operation.
- Flexible IV Bag Fluid Monitoring via Tag-Inducer Proximity
A flexible IV bag uses a signaling tag and inducer to detect fluid volume changes through sidewall flexation.
- Inhaler Cartridge Liquid Supply via Sealed Opening and Porous Member
A liquid supply method for inhaler cartridges uses a cap to seal one opening while filling through a perpendicular second opening.
- Pressure-Sensitive Drug Delivery System with Adaptive Control
A drug delivery system uses a pressure sensor and controller to monitor tissue back pressure during injection.
- Dry Powder Dosing Device Sealed Cavity Vibration
A dry powder dosing device uses a sealed cavity and vibration mechanism to ensure accurate metering.
- Laser-Induced Forward Transfer for Precision Tissue Implantation
A photon-transparent support with a photon-absorbent interlayer accelerates particles across a gap for embedding into receiving substrates.
- Flexible Arm Clamping System for Tattoo Needle Guidance
An extending curved arm absorbs vibrations and bypasses welding burrs to ensure precise needle guidance without compromising sterility.
- Bioimpedance Fluid Volume Monitoring via Pressure-Induced Plasma Shift
A bioimpedance device determines interstitial fluid volume by measuring electrical impedance at baseline and pressurized states.
- Universal Cap for Male and Female Luer Connectors
A universal disinfecting cap accommodates male and female luer connectors through a single opening design.
- Medicament Delivery Device Alarm Shutdown Without PCBA Damage
A displaceable conductive element disconnects the alarm circuit in a medicament delivery device without harming the internal printed circuit board.
- Induction-Based Ablation Catheter for Uniform Tissue Treatment
An induction-based heating system vaporizes ablative agents within inline chambers to deliver controlled thermal energy.
- Peristaltic Pump Thrombectomy Device Eliminates Guidewire Breakage
A peristaltic pump generates negative pressure for thrombus aspiration without high-speed rotation.
- Optical Bung Displacement Detection for Autoinjector Dose Accuracy
Embedded light elements enable optical detection of bung position, resolving incomplete dosing issues in autoinjectors through precise displacement tracking.
- External Male Catheter Dual Sheath Suction Seal
Dual sheath external male catheter applies suction to establish a fluid-tight seal, resolving installation difficulty and leakage risks.
- Optical Cassette Detection Using Absorptive Window
An optical emitter and detector verify cassette presence via a window with predetermined absorptance.
- Magnetic Pump System for Negative Pressure Wound Therapy
Merging a magnetic actuator with flexible membranes creates an integrated pump that manages fluid aspiration while reducing device complexity.
- Integrated NPWT Dressing with Isolation Circuit for Safe Sterilization
An integrated wound dressing uses an isolation circuit to prevent power application during sterilization.
- Sleep Mask Light Therapy with Dynamic Intensity Control
A sleep mask adjusts light therapy intensity using integrated sensors to monitor eyelid position and sleep stages.
- Multi-Modal Sensory Therapy Holder with Textured Surfaces
A personal therapy system integrates heat, scent, and tactile stimulation within a single disc-shaped holder unit.
- Elastomeric Cassette Ridge for High Pressure Stability
Integrally formed raised ridge on elastomeric sheet prevents dislodgment under high transient pressures during peristaltic pumping.
- Switchable Voltage Measurement Circuit for Dialysate Conductivity
A switchable voltage measurement unit detects input and output voltages across a data collecting cell to determine fluid conductivity.