Medical Devices TRIZ Cases

A cardiac output control apparatus employs a probabilistic digital signal processor to estimate biomedical parameters from sensor data.

A transfer element with a resilient member protects the force sensor in an infusion device from overloading during pressure fluctuations.

A disposable applicator kit uses a funnel-shaped entrance to guide rod-like implants into the cannula holder.

A UV-LED applicator surrounds peritoneal dialysis connectors to deliver germicidal light during mating.

A drug delivery system relays sensor data via a replaceable device to enable independent infusion site rotation.

Retractable loading guides align fluid pump assemblies to eliminate manual setup errors and safety hazards.

Positive pressure eliminates vacuum-induced turbulence and deposition errors during laser diffraction particle size measurement of dry powder inhalers.

A base with a superabsorbent substance and fluid channel guides body fluid away from the adhesive interface.

A drive motor rotor rotation direction detection device generates signals to distinguish forward and reverse motion.

Dynamic threshold adjustment based on motor current and pump speed improves occlusion detection accuracy while reducing false alarms.

A portable pump leak monitor uses sensors to detect fluid leaks in negative pressure wound therapy devices.

A wound care system delivers oxygen-rich fluid through a humidifier to the dressing while applying negative pressure via a shared pump.

Crossing frame elements expand radially under fluid pressure to enhance fit and seal, reducing migration risks and accommodating various vessel sizes.

A bladder catheter slide valve prevents urine leakage during bag replacement while allowing air escape.

Curved storage walls and air swirl discharge powder medicine, preventing accumulation in the device.

A wettable capillary tube in a nebulizer cartridge adjusts position to maintain fluid contact.

Fluid-contacting switches detect canister presence, allowing the controller to adjust operational parameters for precise wound treatment.

Disposable caps break upon removal to disconnect power, preventing aerosol reinjection into the reservoir.

A unitary molded manifold guides cover sheet threading to isolate blister portions.

Measuring intermediate platelet content enables dynamic pooling strategies that increase therapeutic product output while reducing whole blood waste.

Segmented media rotates around an angled axis to expose fresh portions to the heating source, reducing warm-up time and delivery speed delays.

Analyzing EEG power spectra identifies unique dominant frequencies, replacing ambiguous band stimulation with precise individual targeting.

Automated rotary valves in a surgical cassette regulate fluid pressure and volume via feedback signals to prevent tissue damage during eye treatments.

Automated measurement of catheter resistance using static pressure and volume flow data in a peritoneal dialysis conduit.

Dental splint with elastic membrane maintains negative pressure in wound area, reducing invasive surgery needs.

A piezoelectric aspirator adjusts drive voltage based on suction tube closure to maintain reliable mucus removal.

A venous access port assembly features lateral recesses that allow practitioners to grasp and push the device into a subcutaneous pocket.

Magnetic couplings stabilize the impeller, eliminating mechanical friction that causes blood trauma while extending battery life.

A portable peritoneal ultrafiltration apparatus manages fluid and glucose levels using a proportional syringe system.

Laser welding joins hydrophilic membranes to drip chambers, resolving melting point disparities that increase manufacturing complexity.

Real-time auditory stimulus intensity adjusts to brain wave spectral parameters, reducing time to fall asleep without drugs.

A tubing assembly uses a movable holder to pinch and block fluid flow through a third line.

Cooling fan on compressor output shaft directs airflow through housing grille to lower internal temperature and extend component lifespan.

Segmented foam spacers distribute reduced pressure vectors over at least 300 degrees to prevent blockages and improve fluid drainage in abdominal treatment.

A rotatable inhaler housing converts between carry and use modes via a pivotal coupling with elastically deformed features.

Motor-driven barrel rotation synchronizes plunger rod descent with gasket lead angles, ensuring complete screwing despite positioning variations.

Segmented adhesive layers resolve the trade-off between bacterial barrier reliability and safe dressing removal without skin injury.

Segmented guiding means enable axial displacement for easy connection, resolving reliability versus ease of operation trade-offs.

Storing reference resistance values on the consumable compensates for manufacturing variations, preventing overheating and ensuring efficient vaporization.

An electric heating fragrance diffuser uses Joule heating to vaporize scent without open flame.

A needle cover removal device uses abutment members to separate protective covers from injection devices.

A fluid control device integrates a needleless access port with a rotating fluid director to manage multi-port flow paths.

A guide wire core wire embeds electrical conductors within an insulating layer to integrate sensor connections directly into the structural element.

Segmentation separates the reusable pumping unit from the disposable fluidic block to reduce container waste while maintaining treatment continuity.

A vertical printed circuit board mounts an optical detector to track needle movement via transverse projection changes.

A deep brain catheter creates a fluid pathway between the subarachnoid space and target structures to transport pharmaceutical agents via cerebrospinal fluid diffusion.

Composite catheter shaft with water-soluble inner core dissolves after use, resolving plumbing clogging risks from non-biodegradable waste.

Coils around a tube detect occlusions and contamination types by measuring impedance shifts caused by eddy currents in flowing liquid.

A co-injection member uses a tapered inlet to generate a vortex that smoothly collects and injects blood within dialysis circuits.