Medical Devices TRIZ Cases

A blood separator sleeve uses enlarged proximal and distal zones to collect plasma and red cells during centrifugation.

Magnetic coupling connects reusable and disposable modules to improve injection precision.

A drug delivery device uses a water-permeable wall and elastic portion to generate transient microchannels for controlled release.

Piezo disc and gasket system adjusts particle size for consistent drug deposition while maintaining therapeutic window concentrations.

A tamper-evident closure assembly uses a rotational support structure to join syringes without direct handling.

A medicament cap assembly uses flexible grippers and a removable insert to engage delivery member shields without initial contact.

A portable infusion device uses an expandable balloon to generate pressure for fluid delivery.

An atomizer uses a porous body in the air pipe to absorb condensed liquid drops, preventing users from inhaling unpleasant condensate.

Concave finger surfaces and asymmetric top buttons resolve operator fatigue during prolonged suction procedures.

Composite tantalum oxide and silicon carbide coatings preserve nanoscale dimensions of silicon microchannels against corrosion in body fluids.

Metal or ceramic filaments form loops that expand surface contact, resolving limited application coverage while retaining heat for targeted therapy.

A coaxially aligned IV flow rate regulator uses a flexible membrane to dynamically adjust the metering port.

A reusable radiofrequency ablation catheter restores first-use status through a software reset mechanism.

A medication metering device uses a piston and one-way valve to synchronize delivery with inhalation, eliminating waste during expiration.

Tracks NMR relaxation rates of water protons to monitor clot formation, resolving detection speed versus system complexity trade-offs.

A medical fluid collection basin integrates a leak detector to identify fluid loss from peritoneal dialysis bags.

A coiled blister strip inhaler uses a rotating piercing member to puncture individual doses, managing actuation force via a load control mechanism.

Radiopaque indicators on multi-lumen implantable port septa enable clinicians to identify specific lumens during fluoroscopic imaging.

A synchrotron accelerator uses an injection electrode and magnetic poles to form dense eccentric trajectories for efficient ion beam extraction.

A folded dry-powder inhaler casing uses a hinge arrangement to join two portions into a single unit.

A tilt detection system uses accelerometers to orient external medical instruments relative to implanted reservoir ports.

A portable wound treatment apparatus merges negative pressure and hyperbaric oxygen pumps into a single integrated unit.

Flex sensor measures airflow rate via bending to control heating current, resolving inconsistent performance from binary detection limits.

A medical safety connector employs asymmetric rotational locking to secure fluid line closures against accidental disengagement.

A pumping apparatus delivers breast milk and fortifier through a valve mechanism connected to separate containers.

A photobiomodulation system delivers 660 nm light to hippocampal tissue, activating brain-derived nerve growth factor.

Elastomeric sleeve creates dynamic fluid-tight seals in rotary plunger pumps.

Inflated balloon catheter deposits viscous biocompatible composition onto internal wound sites, preventing washaway by body fluids.

A flexible plug assembly uses elastic deformation to open a sterile seal without generating particulate matter.

Signal-based proximity detection suppresses infusion pump alarms to reduce patient disturbances and streamline clinical workflows.

Laser speckle interferometry detects tube surface expansion to determine internal pressure without fluid contact.

A wearable infusion device uses a mechanical enable mechanism to actuate the pump upon reservoir filling.

A drug-eluting surgical screw releases therapeutic agents from a reservoir region, preventing bacterial adhesion and biofilm formation at the implant site.

An automated flow-regulating module detects air presence to close the valve, eliminating secondary piggyback connections that increase infection risk.

A drug delivery assembly incorporates a snap feature to generate audible and tactile feedback signals.

A reusable permanent housing interfaces with a disposable blood-contact membrane to control patient temperature.

Curving the internal gas flow path prevents large droplets from reaching the discharge outlet, ensuring only sufficiently atomized small droplets are delivered.

A foot pedal actuates spring-biased pliers to secure ear tags, eliminating manual loading and reducing back strain from bending over.

A wound dressing manages fluid capacity through a localized restraint that preserves joint flexibility.

A biological information measurement system segments cardiac cycles to process arterial and venous blood flow signals separately for rapid concentration calculations.

Deformable elastomer bands enable mechanical activation of sealed aerosol housings, preventing contamination ingress while maintaining sterility.

A frangible carrier member with a break hinge enables mechanical detachment of implantable devices.

Active cooling keeps the medicament stable below 37°C, eliminating manual mixing errors and ensuring precise automated dosing in the corpora cavernosa.

Optical coherence tomography detects blood vessel calcification to determine optimal puncture positions, avoiding failure in hardened tissue.

Integrated gas nozzle dries wet tissue surfaces, preventing dye diffusion and blurring for precise surgical markings.

A peristaltic pump device moves bodily fluid through a pre-chamber to a collection bag.

A receiver-controller device processes telemetry signals from a glucose monitoring sensor to regulate therapeutic substance administration.

A handheld controller uses optical or mechanical sensors to detect user grip and prevent unintended medical device actuation.

Shim structure in bending magnet generates octupole field to adjust horizontal tune, reducing beam loss and shortening therapy time.