Medical Devices TRIZ Cases

Vaporized steam carries particulate drug to the lungs with less device loss and less excessive inhalation than conventional powder inhalers.

Pneumatic pressure feedback in a pod pump improves APD fluid control, simplifies disposables, and enables faster occlusion detection.

An adjustable bellows-based connector regulates infusion pressure and shows real-time pressure status to prevent hemolysis and bag breakage.

A soft tip, safety stop, and adjustable suction help clear infant mucus while reducing injury risk, noise, and cleaning difficulty.

Longitudinal pressing drives side-piercing needles through inclined tracks, reducing force, width, and finger coordination in capsule inhalers.

A layered flexible catheter tip uses heat-shrink coverings and a rectangular understructure to maintain electrode contact on moving cardiac tissue.

A hydrophobic filter stack and baffle route gas while blocking wound exudate, protecting the pump and maintaining stable negative pressure.

A peristaltic pump feeds metered ink from a removable bottle to the tattoo needle without dipping, improving speed, dosing accuracy, and hygiene.

A curved inner needle reaches multiple tumor sites from one insertion, improving treatment coverage while reducing tissue injury and complications.

An integrated NPWT dressing places the pump and electronics inside the dressing while isolating wound fluid for easier positioning and reliable use.

A cam profile with a constant-height resting section prevents premature liquid release, reducing clogging and stabilizing aerosol dosing.

Combined 40 Hz auditory and visual stimulation induces gamma oscillations and microglial clustering to reduce amyloid across brain circuits.

A hinged plate system shapes a disposable fluid bag into a heat-transfer passageway, avoiding heat-transfer fluid contamination and easing cleaning.

A curved channel and swirl section separate liquid droplets from inhaled gas, improving dosage consistency and reducing inhalation risk.

Optical hemoglobin sensing tracks blood volume changes during dialysis, enabling noninvasive fluid removal monitoring outside clinical settings.

Segmented proximal and distal channel walls guide the puncture needle precisely while supporting smoother fluid delivery in skin piercing devices.

Expandable retention arms keep an ingestible sensor in the stomach, then release it for safe GI passage after monitoring.

Encapsulated engineered cells use optical stimulation and selective permeation to deliver timed therapeutic doses while resisting host immune attack.

Controlled suction, a vented wicking pad, and a spacer improve male urine collection by reducing leakage, moisture retention, and pressure injury.

Measures fluid flow at the patient end through a three-way stopcock to improve real-time fluid balance monitoring and reduce manual checks.

Using a host device battery and posture-based liquid supply, this vaporizer cuts bulk and prevents leakage when not in use.

A disposable cartridge uses controlled resistive heating and a barrier layer to vaporize material evenly while limiting burning byproducts and heater fouling.

Alternating full five-sense stimulation with partial-sense intervals boosts brain plasticity while limiting sensory overload and fatigue.

Acoustic waves sent through a compressible IV fluid path reveal patency changes early, reducing manual phlebitis surveillance and occlusion risk.

Conductive elements in a wound filler enable dielectric or resonant sensing of closure progress without direct visual inspection.

A rotating screw cap and crimping fixation unit keep enteral connectors secure while reducing torque needed to disconnect gastrostomy tubes.

A breakable protective mechanism blocks cartridge tampering in inhalers, helping prevent mis-dosage and infection from improper replacement.

Pressure and activity sensing track offloading use in real time, helping improve compliance and pressure ulcer healing.

An outlet fluid buffer absorbs exudate and preserves negative pressure in sealed wound dressings, reducing therapy complexity and fluid buildup.

A pop-up hood and enclosed exercise capsule create separate head and body climates for personalized heating, cooling, and conditioning.

A cord-like removal element shears the skin adhesive bond, enabling secure wear while reducing pain, irritation, and skin damage on removal.

A breathable protective assembly combines secure fixation, urine flow dispersion, and valve closure to reduce postoperative infection and spatter.

Combining electrochemical oxygen generation with negative pressure therapy helps treat stalled or infected wounds while supporting portable use.

Magnetic beam scanning replaces slow mechanical collimation to shape FLASH doses for deep or large tumors in under 50 ms.

Neural networks infer cardiac output and left ventricular volume from blood pump data, reducing catheter use during support adjustment.

Electrical stimulation is paired with antimicrobial delivery and secretion removal to improve swallowing while lowering aspiration pneumonia risk.

A multi-lumen extrusion embeds rigid polymer helical cores in a soft cannula wall to replace metal coils and maintain kink resistance.

Pre-vascularized encapsulation with integrated glucose sensing and oxygen support improves insulin release kinetics and reduces hypoglycemic episodes.

Controlled negative pressure expands and contracts a compressible wound filler to approximate wound edges and manage fluid in large wounds.

A bypass conduit with a deformable tip smooths manifold diameter transitions to prevent microsphere retention and improve dose delivery.

A cutout cover with clips and anti-rotation features keeps an ambulatory infusion pump aligned and secure for reliable inductive charging.

A retention frame and adhesive patch secure a wearable insulin pump while allowing either direct cannula delivery or tubing to a displaced infusion site.

A floating valve in a convergent-divergent drip chamber blocks secondary drug backflow into the primary IV line without a debris-prone check valve.

Air-inflated bladders compress dialysis fluid bags to replace rigid cassettes, simplifying automated peritoneal dialysis and lowering disposable-set cost.

Symmetrical second-order levers and cam surfaces cut inhaler actuation force for users with limited hand strength while enabling dose counting.

Asymmetric connector geometry adds tactile or acoustic feedback for wrong attachment while preserving rotatable infusion set comfort.

Geometric sealing grooves and lips let this two-component cross valve stay leak-tight without silicone while reducing operating force.

Visible aperture indicia let one wound dressing switch between standard care and pressure therapy, cutting stock complexity and infection risk.

Two ultrasonic resonators create a stationary field that boosts skin permeability for insulin delivery without enlarging the wearable.

A sliding inner cap clamps and locks onto the needle shield so both parts can be removed together with less effort for impaired users.