Medical Devices TRIZ Cases
- Polymeric Sensor Cover for Medical Waste Fluid Level Monitoring
A polymeric fluid level sensor cover protects magnetostrictive probes from direct contact with medical waste fluids.
- Percutaneous Magnetic Pumping System for Hemodynamic Support
An external magnetic field drives a rotatable magnet and impeller within a percutaneous sleeve, reducing heat generation while maintaining pumping power.
- Fluid Dispensing Device with Motorized Reset Gear and Pawl Lock
Motorized actuation system uses a floating wheel to drive a pawl that locks the push member in a rest position.
- Blood Pressure Transducer with Reference Fluid for Hemodynamic Monitoring
A blood pressure transducer uses a reference fluid column to measure differential pressure against IV fluid.
- Inhaler Cartridge Partitioning Liquid and Air Flow to Prevent Leakage
A partition member separates the liquid accommodation space from the air flow passage, preventing liquid leakage while enabling efficient aerosol delivery.
- Atomizer Trigger Assembly with Multi-Position Unlocking
A trigger assembly uses a rotating ring and pivoting holder to switch between locked and unlocked positions via an integrated actuation member.
- Pressurized Membrane Reservoir for Fast Drug Diffusion
Strained layers curl to open a sealed cavity, overcoming slow natural diffusion limits in biomedical drug delivery devices.
- Variable Cross-Section Catheter Braid Wire for Kink Resistance
Catheter braid wire segments transition from rectangular to circular cross-sections along the shaft length.
- Galvanic Vestibular Stimulation for Motion Sickness Mitigation
Galvanic vestibular stimulation induces virtual acceleration signals that resolve the sensory conflict between visual and physical motion cues.
- Medication Dispenser Granulating Chamber Prevents Tube Blockage
A drug dispenser system uses a dedicated granulating chamber to crush solid pills into fine powder before mixing with fluid.
- Injection Device Occlusion Detection Using Dynamic Evaluation Time
Dynamic evaluation time periods distinguish true occlusions from normal operation, reducing false alarms and ensuring consistent medicament delivery.
- Tapered Pump Member With Guide For Uniform Nasal Spray Collapse
A tapered pump member guided by a cylindrical component ensures uniform collapse for stable powdered medicine dispensing.
- Intravaginal Microbial Barrier for Premature Birth Prevention
An intravaginal coating device blocks microorganism migration into the cervical canal without disrupting the protective mucus plug.
- Wearable Sleep State Detection and Alert System
A wearable device detects user sleep states using physiological data to trigger timely alerts.
- Hybrid Material Nebuliser Mesh for Tight Nozzle Tolerance
A hybrid mesh uses a dense first portion and a low-density second portion to form precise nozzle outlets.
- Dynamic Profile Connector for Negative Pressure Therapy
A dynamic profile connector collapses under reduced pressure to minimize its physical height while maintaining fluid communication pathways.
- Medical Pump Filling Level Detection via Membrane Extension
A medical pump device detects filling levels by measuring elastomeric membrane extension using an integrated sensor system.
- Haptic Stimulator Using Piezoelectric Polymer for Prosthetic Touch
A haptic stimulator uses a piezoelectric polymer layer driven by an AC signal to generate mechanical vibrations.
- Syringe Pump Occlusion Relief via Reverse Motor Rotation
Reverse motor rotation evacuates fluid from an occluded tube, preventing abrupt drug flow when the blockage clears and enhancing patient safety.