Medical Devices TRIZ Cases

A dual diaphragm valve mechanism manages fluid displacement within medical connectors to ensure precise medication delivery.

Automated fluid splitting system uses weight scales and a controller to manage clamp assembly flow, resolving manual platelet product distribution errors.

Integrated scale measures solution bag weight to regulate fluid flow, eliminating manual calculation errors during point-of-care preparation.

Infrared CO2 detection resolves versatility versus precision trade-offs, enabling automated volume control across multiple sequential procedures.

A slidable cartridge body obstructs air inlet and outlet apertures to retain volatile compounds during storage.

A pump delivers precise ophthalmic liquid doses using a collapsible cartridge and dual-air-stream mechanism.

An analysis system measures air flow parameters to determine aerosol deposition in respiratory devices.

Integrated microfluidic panels manage exudate balance while silver nanocrystalline powder creates a sterile environment to accelerate wound recovery.

A wearable drug delivery device uses a broad, flattened reservoir aligned with the cannula axis.

A locking mechanism with a liquid stop plug and elastic membranes controls fluid flow in an infusion cassette.

Segmented partial arc journal bearings reduce shear stress exposure to minimize hemolysis and thrombosis risk in ventricular assist devices.

A medical applicator uses a flexible compression segment to deliver liquid products through the device.

An intravascular equilibrium glucose sensor uses a fluorophore to measure blood sugar levels continuously.

Vacuum compression forces lubricant around the catheter tip, preventing migration to the fixture end.

Segmented wall panels reduce manufacturing complexity while enabling customizable sensory exposure for stress relief.

Segmented rolling members create transient negative pressure to overcome insufficient absorption in liquid-only skin care devices.

Segmenting the valve body from the cap allows preliminary spring prestressing, reducing activation force while ensuring reliable non-return functionality.

A controller adjusts negative pressure setpoints to detect wound volume changes via fluid flow path sensors.

Slot-shaped recesses constrict electric field lines to create steep temperature gradients across the heating element surface.

A topical negative pressure system calculates internal pressure using pump speed and flow rate measurements instead of direct sensing.

A medicine injection catheter uses a retractable cover to expose the needle for delivery.

Macroporous tissue integration layers anchor implantable devices to prevent epidermal marsupialisation and infection.

Serpentine grooves in a neonatal tubing heater maintain body temperature for preterm infants, preventing heat loss and energy diversion during feeding.

A suction catheter system captures blood clots en-bloc using a dedicated pump and filter device to maintain fluid flow.

Umbrella-shaped bracket with air holes prevents nasal fluid from entering the host, ensuring cleanliness and easy cleaning.

A motor-driven shutter mechanism coordinates with fluid flow to prevent contamination and clogging at the administration port.

Rotating a regulating ring changes the fluid communication area between circulating portions to prevent liquid leakage from reaching sensitive components.

An elongate and bridging wound dressing manages fluid accumulation across irregular post-surgical breast wounds.

Optical sensors replace bulky scales in automated urine monitoring systems, eliminating floor space occupation and transport difficulties.

Segmented holding mechanisms resist force impacts to maintain blocking periods and prevent overdosing in pharmaceutical dispensers.

Pneumatic displacement of the reservoir drives high-viscosity medicaments through automated needles, reducing injection time and patient discomfort.

Removable members on a reusable urinary catheter limit reuse cycles, preventing integrity degradation from repeated sterilization.

Segmented suction paths eliminate hose blockages at Y-connectors while merging pump units into a single housing reduces operational complexity.

Segmented outlet arrangements with selective membranes remove air bubbles from medication fluid, ensuring complete delivery without residual gas.

A convertible inductive coil transitions between direct and passive electromagnetic power transfer modes to supply energy to implanted medical devices.

A wearable device uses ultrasonic transducers to deliver therapeutic agents through the skin based on real-time biosensor data.

An implanted port uses a lock box and needle key mechanism to prevent dislodgement during prolonged brain tumor drug infusion.

A variable force spring drives a collapsible reservoir to maintain uniform fluid flow rates in compact medical delivery devices.

An infusion system uses dual wavelength optical signals to detect air presence within fluid delivery lines.

A closed loop insulin delivery system monitors analyte sensor signals to detect faults and dynamically adjust medication rates.

An intravaginal device uses sensors to detect pelvic floor muscle movements and provide biofeedback.

A male luer connector features a distal recess containing an antimicrobial composition to kill microorganisms upon connection.

An overmolded elastic element anchors within a medical line injection site tubular body using radial through-holes.

Integrated controller adjusts heating element power using thermocouple feedback to maintain optimal temperature and prevent terpene degradation.

Heated shape memory elements straighten bent medical tool distal ends, enabling easy retraction from complex sinus structures.

Pressurized liquid forces the nozzle plate against a polymer rim in a tapered thermoplastic holder, creating a hermetic seal without glues or solvents.

Segmented guide tip positions infusion needle at right angle to catheter axis, ensuring accurate drug delivery while minimizing tissue damage.

A plunger pivots within a filling chamber to displace liquid into a reservoir and overflow chamber.