Medical Devices TRIZ Cases

A cylindrical probe with an electrode array generates a pulsed electric field to increase skin density in vaginal tissue.

A dialysis machine adjusts osmotic agent concentration, dwell time, and cycle volume using real-time patient physiological data from sensors.

An integrated flow corral redirects fluid toward the valve underside, clearing stagnant residues that accumulate during repeated non-invasive access.

Pulsed chemical blocking agents create reversible peripheral nerve conduction blocks, eliminating numbness and discomfort while preserving autonomic function.

Distributed optical codes on aerosol consumables enable software stitching of segmented data to verify authenticity and prevent unauthorized device activation.

A detachable cover system with a flexible adhesive base and separable connectors secures percutaneous power links.

A breakaway medical connector uses threshold force to detach engagement features and isolate fluid pathways.

A liquid jet inhalation device uses a substrate-embedded heating element to pre-heat fluid before ejection through an ejection nozzle.

A brain-training headset uses dry electrodes to detect neural activity and guide mental states through biofeedback.

Gear regulation and drop sensor arrays monitor real-time flow rates to resolve precision versus cost contradictions in gravity infusion systems.

A drug delivery pump drive mechanism uses parallel biasing members and a retainer to dispense medicine through an integrated piston and plunger seal assembly.

A locking lever with integrally formed signaling means engages a mechanical index to block the dosage key.

A vaporizer mouthpiece integrates conductive activation, internal light simulation, and antimicrobial treatment into a single component.

Dual pressure sensors detect infusion tube pressure to actively stop injection and trigger alarms when thresholds are exceeded.

Rounded hinge design and retaining tabs prevent lateral disengagement while eliminating sharp edges that irritate patients.

A pneumatically-actuated instillation regulator uses a piston mechanism to move topical treatment solutions from a source to a wound dressing.

An automated imaging system detects limb swelling by analyzing pattern indicator distortion, replacing time-consuming manual measurements.

An infrared sensor detects fluid presence and flow in feeding tubes by measuring light transmission intensity.

A method calculates average rate-of-change force readings during fluid delivery to detect occlusions in infusion pump assemblies.

A connecting device embeds passive RFID transponders in both the plug part and coupling part to enable component identification via a single read/write antenna.

Hydrophobic vents in dialysis cassettes extract air to prevent patient discomfort while minimizing dialysate waste during setup.

A bioelectric stimulator delivers precise low voltage pulses to control protein release.

Control circuitry detects fluid path blockages in negative pressure wound therapy systems by measuring pressure change rates.

An implantable medical device monitors transthoracic impedance to derive fluid status measurements for acute decompensated heart failure therapy guidance.

A cannula insertion mechanism uses a fusible blocking element to retain the cannula holder during storage.

A flexible membrane deforms under fluid pressure to modulate light transmission through a transmissive member for occlusion detection.

A turning operation portion with a guard portion manages operation wire tension in flexible medical catheters.

A piezoelectric pump driven by a coupling circuit with inductive reactance limits signal rate of change to generate negative pressure.

A coupled torsional fixator applies external torque to rotate femoral segments and correct anteversion angles.

An interposed collar in a nasal aspirator collection member blocks mucus from entering the hose connection, preventing device contamination and damage.

Time division multiplexing enables a wireless module to alternate between master and slave modes, forming mesh networks without full bond relationships.

A crosslinked organopolysiloxane coating reduces friction forces on medical device surfaces.

Monochromatic red light gradually dims over time to aid falling asleep without disrupting melatonin production or circadian rhythms.

An elastomeric medial region biases a distal collar to cover the port, resolving the trade-off between engagement ease and contamination protection.

An implantable drug delivery system uses an automatic periodic flow regimen to dispense liquid medication in intermittent pulses rather than continuous infusion.

A nebulizer nozzle module uses a guide unit to create vortex flow fields for smooth particle transport.

A collapsible paperboard valved chamber expands from a flat profile to deliver aerosol medication through integral one-way valves.

Curved guide walls prevent outlet tubing kinking while identification magnets enable sensor-based configuration detection for accurate fluid delivery.

A fluid collection device uses a user-actuated valve to regulate gas and liquid flow through a conduit.

Segmented inner and outer hub isolates the needle from external forces, maintaining precise depth for effective drug absorption.

A set connector system directs trapped gas through an integrated vent subsystem to prevent fluid path contamination.

Segmented suction channels and adjustable blades reduce pressure loss in compressed air, enabling efficient aerosol production with lower compressor capacity.

Real-time pressure monitoring detects lumen stress and reduces infusion flow before exceeding burst thresholds, enabling safer use of compliant catheters.

An implantable pump uses an accumulator and valve to dispense medicament at a higher velocity than steady-state delivery.

A smart module interprets atomizer electrical resistance to calibrate output voltage and wattage for electronic inhalation devices.

Segmented insulating containers maintain refrigerant temperatures between 0 and 15°C, reducing pain during needle penetration.

Interchangeable inhaler heads adjust airflow resistance to ensure efficient aerosolization and lung penetration despite limited patient inspiratory effort.