Medical Devices TRIZ Cases

A magnetically controlled pump delivers chemotherapeutic agents directly to brain tumors using a flexible polymer pouch actuated by electromagnetic coils.

Prepackaged needleless intravenous tubing integrates pre-capped sterile access ports to maintain port sterility and reduce nosocomial infection risks.

Slit-based microjets distribute agents rostrocaudally, preventing local toxicity from tip accumulation.

Multi-chamber cartridge mixes diluent and dry drug automatically upon insertion, resolving manual reconstitution complexity while enabling adjustable dosing.

A glucose sensor reliability metric assesses measurement accuracy using observed signal trends.

Segmenting dose mass across dual capsule chambers maintains high fine particle fraction while universality principles reduce device complexity.

Automated insertion assembly drives dermal perforation and subdermal devices to controlled depths, resolving manual insertion errors and patient discomfort.

Segmented guide units and nested sheaths enable precise navigation through complex bronchial branches while maintaining structural stability.

A catheter interface protection device with a shield and clips secures umbilical catheters in neonates.

A training device body connects to an inhaler housing and closes a switch to enable electrical circuit functions.

An expandable gateway element permits fluid passage within a body lumen, reducing thrombosis and infection risks.

A touch screen control system for infusion pumps stops processing manipulation commands when the pump door opens.

Infusion solution flow carries a long catheter through an introducer into a vessel, eliminating guidewire complexity and maintaining sterility.

A nasal inhaler uses a pre-load mechanism to actuate a compression pump via transverse lever force.

Axially aligned D-shaped reservoirs compress the device footprint to minimize patient trauma during apheresis procedures.

A cannula part integrates a soft cannula and bushing into an inserter device that guides the penetrating member with controlled velocity.

A disposable drug delivery assembly integrates a cartridge and injector with mechanical interlocking features to prevent premature fluid transfer.

A biodegradable reservoir implant releases cisplatin into the peritoneal cavity via fluid solubilization.

Apertures of varying diameters redirect fluid flow to protect the filter from exudate contamination during orientation changes.

Carrier protrusions slide in frame slots to reduce subcutaneous access frequency.

Magnetic docking transfers insulin from a swallowed capsule to an implantable pump, eliminating surgical refilling procedures.

A capsule inhaler uses two pivot axes to hinge the closure cap and mouthpiece independently.

A puncture needle with a single tube structure and widening discharge path reduces jet flow formation, minimizing injury risk to the central nervous system.

An automated UV inspection system detects 10-micron openings in medical packaging substrates, eliminating human error and ensuring sterile integrity.

A telescopic pericardial access device uses a biasing mechanism to maintain an expanded configuration for controlled insertion.

An angled needle grouping contacts a module housing tip to generate capillary action, resolving inconsistent ink application in tattoo devices.

A flexible shaft connects a C-shaped clamp to medical devices, enabling secure attachment to various support structures.

Segmented collet and sleeve components prevent fluid leakage up the taper by abutting the barb with an inward projection.

A gelatin capsule with enteric coating dissolves in the intestine to release a mucoadhesive substrate and controller for scheduled drug delivery.

Beam-mounted strain gauges measure deflection to detect mechanical wear, preventing dosage errors caused by component degradation.

A plasma enhanced aerosol device uses a non thermal plasma jet to activate microdroplets for inhalation therapy.

A portable negative pressure medical device uses a manual plunger rod mechanism to generate suction without electrical power.

Rack and pinion mechanism converts rotational actuator motion into linear wire displacement, resolving limited steering travel in compact handles.

Resiliently-biased indicator arms protrude through housing openings to resolve visibility contradictions in drug delivery devices without adding complexity.

Segmented electrochemical generator produces oxygen via nickel electrodes to penetrate biofilms and improve healing mobility.

A mechanical membrane closes electrical switches upon detecting pressure spikes from occluded catheters, alerting providers to drug delivery interruptions.

A control unit measures fluid rise time in a calibration chamber to calculate actual flow rate and adjust pump speed.

A refill set prevents microbiological contamination by maintaining a closed hose system with a three-way valve and T-port.

Segmented cuts and local dimples delay valve collapse, ensuring predictable fluid flow and reducing blood clotting risks in needleless access devices.

Automated optical measurement system quantifies dialysate turbidity to resolve subjective visual inspection errors.

A compact disposable insulin dispenser uses a peel-off tape to activate power and expose the delivery catheter for skin attachment.

A wearable device modulates brainwave activity through auditory, visual, or tactile stimuli.

Frangible membrane ruptures during bending to release indicator substance, revealing kinks that obstruct fluid flow.

A suction device uses a transparent inspection portion to facilitate precise alignment with the wound cover member opening.

A catheter extension uses a wicking member to transport urine to a chemical indicator for visual infection detection.

A controller monitors pressure levels and adjusts flow rates via a valve assembly, reducing operator radiation exposure during CT colonography.

A peritoneal dialysis device uses a ventilation line to introduce air into the drain path.

A breath-actuated nasal delivery device directs substance through a nozzle to the middle meatus.