Medical Devices TRIZ Cases

An illumination source highlights connected hose lines so staff can confirm accessory matching and reduce medication errors.

This catheter separates urine drainage from urethra flushing to support hygiene and reduce UTI risk during intermittent catheterization.

A movable lid protrusion pushes a pre-loaded herbal sachet into the heating chamber, improving loading and heat uniformity.

A clip and tether provide consistent drainage bag attachment, helping maintain position and reduce displacement and backflushing risk.

Coded expiry sensing helps infusion pumps block expired tubes and syringes.

A catheter plunger dispenses adhesive, barrier, and non-adhesive layers to seal GI defects without surgical suturing.

CT and optical scans customize a dental guide that directs the needle to the mandibular foramen, limiting blind insertion and tissue damage.

This case uses a remote pump, ultrasonic sensing, and bubble counting to monitor and drain spent dialysate away from the patient.

A multilayer tortuous path filter traps fibers that bypass standard filters, producing plasma ready for immediate transfusion.

A jacking plate rotates a scaled counting plate, helping atomizer users track remaining and ingested liquid volume accurately.

A tangential inlet creates a vortex that removes large droplets, improving size control for transnasal inhalation therapy.

Selective electrolyte delivery activates a reactor to create reduced pressure for wound therapy.

A gas reservoir, flexible membrane, and pressure feedback support accurate infusion while reducing air-bubble false alarms.

This brain stimulation device detects article types and adjusts current output for smoking simulation, stress relief, or therapy.

A resilient member strikes a receiving member during tube rotation, simplifying assembly while signaling needle-safety activation.

This case separates fresh-fluid filtration from used-fluid drainage to prevent membrane clogging in peritoneal dialysis.

A disposable receptacle uses enzyme-driven color change to identify glucose before arterial or venous monitoring samples are contaminated.

A dual-material hose uses manually closable distal orifices for adaptable local delivery and reduced tissue irritation.

A controlled CO2 supply pressurizes the PD disinfection loop to prevent or remove calcium carbonate during disinfection.

A preloaded spring and radial blocking plate release the reservoir axially, reducing actuation force for complete dose delivery.

An absorbent disinfecting cap speeds secure connections and prevents reuse.

An expandable slitted cap uses inner and outer threads to disinfect male and female needleless connectors.

Bellows or elastic members trigger sealed connector release under excessive force, limiting fluid loss and infection risk.

Paired skin temperature sensors near the catheter entry and tip trigger an alarm when extravasation changes their temperature difference.

An integrated capacitive sensor measures ejected fluid while an electroosmotic pump advances the actuator for controlled drug delivery.

A machine-readable code lets the infusion pump compare disposable-item expiry with system time and block expired use.

A reusable holder pierces the capsule and induces swirling airflow to deliver at least 75% of dry powder in five or fewer inhalations.

This case uses a rotary-to-axial pump, rotor sensing, and independent power interlock control for compact, accurate dosing.

A nested nebulizer connection uses protruding elements and abutment walls to secure parts while simplifying cleaning and refilling.

Glucose trend analysis detects nonactionable rescue conditions, limiting insulin delivery while autonomous regulation continues.

Machine-readable codes let pump controls monitor disposable expiration and residence time, blocking unsafe prolonged use.

A low-frequency oscillator drives needle penetration while high-frequency vibration lowers insertion force, pain, and skin trauma.

A dual-lumen catheter drains urine, then covers drainage eyelets to retain medicament during precise bladder instillation.

A pod processor monitors the formulation while a dispensing body authenticates it for calibration and counterfeit protection.

Time-of-flight, pressure, and drop sensing help detect upstream flow abnormalities and adjust pump operation.

A segmented dual-knob actuator redirects excessive loads away from the control element, allowing the second knob to be replaced if damaged.

A respiration sensor adjusts sound frequency to synchronize breathing, reduce ambient noise, and support slower breathing for sleep.

A flexible reservoir and driven roller reduce wearable device height while conveying drug through the outlet during delivery.

Dedicated saline, contrast, and vacuum pathways keep fluid delivery connected during multi-catheter exchange, improving selection accuracy.

Friction-fit catheter connections enable non-surgical exchange and restored patency.

A disposable cartridge uses a piercing nozzle for consistent dermal spraying.

A shelved tray with paired flexible fingers helps prevent syringe displacement, dosage loss, and contamination during transport.

A lateral cannula opening and elastic arm prevent premature implant expulsion while reducing damaging contact pressure during insertion.

This case replaces error-prone plunger actuation with an SMA wire and hard stop for accurate, compact liquid-drug delivery.

This case shows how an intermediary sealing member redirects injected liquid before it reaches the atomization core, reducing leakage.

A keyed canister, encrypted data module, and timed lockout secure metered-dose inhaler use against tampering and misuse.

A shield, barrier film, clips, and seals protect the umbilical interface while stabilizing catheters and limiting bacterial migration.

A threaded plunger and detents meter topical medication per half-turn for discreet transdermal delivery without GI dose loss.

A stent-supported external conduit enables repeated vessel access while reducing bleeding, clotting, and infection risks.

Hydrophobic filtration vents gastric gas while blocking contaminants in neonatal decompression.