Medical Devices TRIZ Cases

A hypotube with adjacent polymer sections of different flexibility improves catheter pushability, torqueability, and kink resistance under high pressure.

A permeable external collection core and suction tube manage urine flow without catheterization, reducing infection risk and discomfort.

Pressure integrity and drop tests verify a hydrophilic PD filter for safe reuse, cutting disposable waste, setup time, and storage burden.

Nested housings with offset silencers and tubular magnets cut surgical vacuum pump noise while preserving reliable vacuum function.

Negative pressure and a guide surface help mix viscous compositions with refrigerant evenly while limiting freezing and improving penetration.

A pressurized gas cartridge drives aerosolization without electricity or heat, enabling precise dose control while protecting medication integrity.

A disposable reservoir-cannula module pairs with a sealed reusable drive to enable sterile insertion, precise metered delivery, and easier maintenance.

Separating powder drug and solvent enables on-demand mixing, preserving stability while supporting precise continuous antibiotic dosing.

A deformable insert and pivoting body secure a medical lumen on skin, reducing dislodgment, infection risk, and removal discomfort.

An absorber sheath around the flow tube suppresses ultrasonic reflections, improving bolus flow measurement and injection record accuracy.

An integrated disinfectant collar cleans the VAD hub during syringe connection, removing extra swab steps and lowering contamination risk.

Timed confirmation and cancellation signals make insulin pump bolus delivery quicker to set while improving control during post-meal dosing.

A bellows pump with integrated fluid paths and actuator control makes automated peritoneal dialysis more compact, portable, and precise.

A layered NPWT dressing separates conformable wound contact from absorbent fluid handling to fit body contours while maintaining exudate flow.

Pulsed electrical heating and a modular valve cartridge improve aerosol generation while avoiding combustion and pyrolysis byproducts.

An amphiphilic tube wall creates low-friction insertion without added lubricants, while a colored guide helps users orient the catheter safely.

Relief portions and dimples guide valve collapse under pressure, then restore sealing to prevent sticking, leaks, and IV set replacement.

A semi-rigid refillable reservoir uses a porous membrane to sustain local antibiotic release at wounds while resisting deformation and joint failure.

A reusable heater and enclosed consumable cavity cut waste and cleaning burden while maintaining safe, efficient aerosol generation.

Stored sound elements are selected and synthesized by symptom to improve awareness and support appropriate actions in cognitive decline.

Real-time fluid-level sensing adjusts subcutaneous infusion rates to prevent edema, reduce clinician intervention, and support safer remote care.

Finger-hook apertures and a guided tear line let catheter bags drain with less force while reducing leakage and backflow.

Removable end coupling and a connector hub protect mouthpieces, prevent liquid leakage and accidental activation, and support interchangeable consumables.

A porous vent plug lets air escape while blocking liquid, enabling self-priming infusion without manual purging, liquid waste, or skin irritation.

Interlocking couplers, guided movement paths, and RFID tracking help inhalers transfer source material units securely and prevent misuse.

Vertical pressing with inclined tracks or linkages enables side capsule piercing with lower force, narrower width, and easier one-handed use.

A closed-tip, side-hole aortic cannula sends ECMO blood antegradely to reduce cardiac load, vessel complications, and flow collision.

Pressurized gas control heads and an ejector create compact vacuum suction for longer urinary relief use without removing flight equipment.

Bonding adhesive between ultrasonic transducers and fittings suppresses rogue vibrations for more reliable IV bolus flow recording and alerts.

Multimodal ECoG, iEEG, and surface EEG improve sleep stage modeling and enable adaptive stimulation without over- or under-stimulation.

A scrub foam, disinfectant reservoir, and elastic sealing lip clean female luer threads and block contamination for up to 7 days.

Peroxy pyruvic acid is instilled before negative pressure to suppress biofilms and HAIs while promoting wound granulation.

Baricity control, flow-rate tuning, and barbotage steer intrathecal medication toward nerve targets while reducing waste from diffusion-limited delivery.

A rotating attachment part breaks or weakens its cover during deployment to improve gastrointestinal tissue attachment and oral drug absorption.

A small-profile IUS inserter avoids passing a tube through the cervix, reducing pain while supporting stable uterine placement.

A manual blister pump with check valves delivers low-cost negative-pressure wound therapy without continuous power, supporting mobile patient use.

Ultrasonic welding and a vented plunger help an intra-ruminal capsule resist separation, pressure build-up, and inconsistent dosing.

Intermittent negative pressure plus atomization softens sticky sputum, improves removal efficiency, and reduces airway injury during suction.

Humidity sensing in the reduced-pressure pathway warns of dressing saturation early, helping prevent leaks, blockages, and therapy loss.

A spiral slide groove and rotating tube arm stabilize IV tube compression to prevent flow drift at high rates and support reusable one-handed control.

ASMR frequency analysis guides massage pressure and playback timing to improve sleep induction without disrupting deep sleep.

EDTA in a predonation bag enables sterile, centralized automated sample filling while avoiding anticoagulant interference in blood analysis.

Separate air and liquid micro-pumps feed an atomizing nozzle to produce inhalable aerosol without combustion or pyrolysis by-products.

A helical worm and cylindrical engagement feature simplify inhaler dose counting, cutting part count, tolerance sensitivity, and assembly effort.

A transverse control element and dual springs automate needle insertion and retraction in patch pumps while saving space and supporting reusable drive modules.

A low-profile distal tip expands inside the vessel to improve clot capture and aspiration while preserving navigation through narrow cerebral arteries.

Sensor feedback balances delivered and recovered fluid to prevent wound overfill or underfill during negative-pressure instillation therapy.

A single esophageal assembly combines non-invasive cardiac pacing with gastric decompression to stabilize heart rate and reduce aspiration risk.

Pressure and flow monitoring detect leaks, blockages, and full canisters in negative pressure wound therapy to keep treatment stable and safe.

A conformable suction adapter and open transmission layer keep NPWT dressings clear of blockages while storing exudate in the dressing.