Medical Devices TRIZ Cases

An in-line dual reservoir access port design utilizes a vertical prong stem to establish independent fluid pathways.

A piezoelectric blower mounted on a circuit board with an aligned through-hole creates a compact inhalation device.

A suction therapy system uses periodic pump activation to monitor pressure change rates for fault identification.

A portable regulated vacuum pump system adjusts negative pressure via sensor feedback to maintain precise suction levels during surgical procedures.

Segmented glass filaments create voids that accelerate liquid transport, resolving slow replenishment in traditional silica wicks.

A reservoir assembly uses a nested sensor unit to detect plunger movement along a guide member.

A fluid collection garment uses a vacuum port to draw urine through a wicking barrier, reducing infection risks from invasive catheters.

Segmented chest bands with embedded vibration motors replace bulky mechanical systems, enabling mobile airway clearance during daily activities.

Expandable catheter electrode features a mesh intermediate portion with gathered proximal and distal ends to increase treated area during ablation.

A needle protection device uses elastic return means to transition protective legs between covered and exposed states.

A flexible conduit with a precise cutout guides medicinal leeches to wound sites for hands-free attachment.

Bubble irregularities on the catheter hub and shaft surfaces enhance welding coupling force, preventing detachment under pressure.

A display system shifts pixel color values based on time of day to regulate viewer circadian rhythms.

Independent thermostat circuits drive gradual temperature transitions in impermeable applicators, resolving patient discomfort from sudden thermal shocks.

Gas pressure forces residual urine from catheter conduits into collection vessels, eliminating manual flushing and improving measurement accuracy.

An EEG monitor detects impending hypoglycemia and restricts insulin delivery to prevent severe glucose drops.

A dry powder inhaler uses a polyoxymethylene winding wheel to balance lid sheet attraction forces for consistent blister package indexing.

A differential force sensor measures fluid flow rates near the patient entry point.

A compact fluid dispenser uses a bellows reservoir and constant force spring to expel medicaments.

A single-dose dry powder inhaler uses a peelable blister pack with a gripping portion for direct user opening.

A blister folding device creates two spaced openings along the bowl circumference to enable smooth airflow through the dry powder inhaler.

Parylene coating on elastomer valves prevents prostaglandin adsorption and microbial contamination without aggressive preservatives.

A portable urine collection system uses a pump to transfer fluid through a conduit into a container secured on a wheelchair.

A trigger assembly uses a cam and backstop to switch between preloaded and triggered positions.

Coated electrodes detect bioavailable drug concentrations via oxidation currents, enabling precise real-time infusion adjustments.

A reservoir-equipped intraluminal sleeve continuously releases metabolic agents and applies electric stimulation to counteract weight loss plateaus.

An inverted urination funnel connects suction tubing to its lowest outlet point.

A tuning module adjusts signal frequency to maximize perceivable sound volume, overcoming attenuation in hermetically sealed ambulatory medical device housings.

A startup routine drives an infusion pusher at variable speeds to detect piston movement via force sensing.

An integrated hemodynamic sensing device combines multiple pressure transducers into a single package for precordial placement.

A protective shield couples to the insulin dispensing unit housing to safeguard the fluid reservoir.

Side-by-side placement with silicone seals prevents e-liquid leakage into the battery, eliminating short circuit risks.

An insert spaces imaging features from the canister wall to enable optical blood loss quantification without freestanding equipment.

Implantable venous access port uses a guide wire for precise subcutaneous positioning.

Acoustic sensor detects aerosol plume in nebulizer conduit, resolving operation sensing reliability without increasing device complexity.

A torque arm coupled to a transducer measures fluid receptacle weight, triggering alarms to reduce manual nursing checks.

A finger-manipulated strip uses elastic webbing to induce patient relaxation through tactile resistance.

Segmented inlet cannula design separates smooth flow zones from rough ingrowth areas, reducing thrombus formation risk in heart pumps.

A rotatable counter mechanism displays dose counts through nested transparent wheels, resolving measurement precision versus device complexity.

A self-righting medical device closure uses an asymmetrical flange to automatically orient upright.

A pivoting arm extends a delivery structure toward the lumen wall, bypassing enzymatic breakdown in the GI tract to improve systemic uptake.

A medical fluid injector controller calculates individual injection rates from a single mixture ratio input.

Offline-trained neural networks predict deep sleep periods to adjust sensory stimulation timing, resolving personalization complexity trade-offs.

A compact tooth whitening device uses a Venturi effect to mix solid and liquid products via gas flow.

A wearable housing unit secures peritoneal dialysis catheter components via a necklace or clip mechanism.

A rotator mechanism enforces a specific activation sequence for medicament delivery devices.

A glucose infusion system detects connector pair formation to enable safe priming operations.

A Luer securement device uses an annular wedge seal to seat the catheter base within a flexible hood adapter.

Replacing mechanical weighing with optical detection eliminates environmental instability while maintaining high-speed measurement precision.

Segmenting basal and bolus delivery reduces needle insertion frequency, minimizing bruising while maintaining flexible therapy options.