Medical Devices TRIZ Cases

Preformed reservoir film maintains fluid communication when empty, resolving device weight and complexity trade-offs.

Soft magnetic flux enhancers concentrate field lines between magnet assemblies, resolving limited coupling efficiency in blood pump drives.

Segmented ink delivery channels enable simultaneous multi-color application, reducing procedural time and skin trauma compared to manual tattooing.

Soft wall load measurement unit in sheet-shaped blood cassette detects circuit internal pressure while suppressing creep deformation.

A carrier-free nicotine powder inhaler delivers sub-5 micrometer particles at low inhalation rates.

A high-pressure rapid solenoid valve creates a submillimeter pulsating fluid jet with atomic densities exceeding 10^20 cm^-3 for plasma generation.

Interlocking protrusions and slots in a catheter locking cap prevent vent plug loss during shipping, maintaining sterile integrity.

Segmented manifold perforations and merged layer welds distribute fluid across tissue sites while preventing external contamination.

A catheter shaft uses an annealed wire segment at the distal end to prevent coil unraveling while maintaining kink resistance against insertion trauma.

Segmented petal members simulate a uterine environment to treat hyperbilirubinemia while maintaining caregiver access.

Flexible gastric device expands for retention and collapses for safe emptying, resolving safety risks from prolonged stomach residence.

A wound cover transitions between rigid and flexible states using adjustable internal channels to manage negative pressure application.

Radial sliding rails and T-shaped blocks enable rapid spraying head detachment, preventing germ spread without complex engagement structures.

Color-coded markings on a primary IV set system resolve identification complexity while a merging fluid pathway connects secondary sets.

A manual valve actuator with a handle and driver rotates medical fluid delivery set rotors to control flow.

Pocket on guide gear extracts powder residue to prevent jamming in compact dry powder inhaler devices.

An integrated operation counter tracks container usage to prevent misuse, resolving the trade-off between device reliability and assembly complexity.

A catheter coupler mounts the tube to a waist belt while a control valve regulates fluid flow through the flexible exit end.

A topography apparatus couples to an e-vaping device interior to generate vapor topography data via wireless connections.

Centrifugation isolates buffy coat, which a microtubule syringe exposes to antigens to resolve polyvalent vaccine interference.

Rotating gripper hubs twist needles off syringes, preventing user stabbing accidents.

An endoluminal introducer offsets the instrument with inward projections to create a clearance space around the lens.

An implantable drug delivery system positions a microcatheter through a cranial port to elute neurotherapeutics directly into brain tissue.

An insufflation device processor measures gas feeding time periods and adjusts flow rates to maintain stable intra-abdominal pressure.

Capsule identifies inflamed areas via Compton backscattering counts, enabling precise medication release.

An implantable port uses a cam and gear system to deploy suture needles for secure tissue anchoring.

A portable vaporizer processing unit estimates active agent dosage using a mathematical model based on vapor generation time and material properties.

Graded tube resistance eliminates upstream cooling dead time, enabling continuous pulsed injection of hot and cold therapeutic agents.

A helmet integrates EEG acquisition and vagus nerve stimulation to regulate mental states through real-time biofeedback.

Segmented wrist bands secure surgical sharps in sterile, distinct orientations to prevent accidental needle sticks and contamination during cosmetic procedures.

A fluidics cassette package integrates volumetric and vacuum pumps to manage irrigation and aspiration during ocular surgery.

A surgical suction tube uses a flexible rod with a finger tab to clear obstructions from the lumen.

A wearable audio system detects sleep states by comparing motion data from the device and its paired gateway to insert playback markers.

Manual actuation expands a suction chamber volume to generate negative pressure for bodily fluid removal.

A retraction plunger assembly uses a biasing member to retract needles into the barrel.

A nasal pMDI actuator expands the flow path cross-section to maintain delivery force through conductive materials.

Segmenting the console from a portable controller resolves the reliability versus mobility contradiction in interventional procedures.

A tattoo machine grip apparatus uses a ratchet disc to secure needle cartridge orientation and enable depth adjustment.

Baffles constrain exudate movement while sensors alert users, preventing spillage that contaminates electronics during patient mobility.

Segmenting sterility protection from steam penetration resolves incomplete autoclaving and prevents filter housing deformation.

A multi-modal headset integrates electrical, audio, and photic stimulation to modulate physiological states.

A manual tattoo tool receives a disposable needle cartridge and maintains the needles in an extended position for immediate use.

A compact inhaler stores a medicament canister inside the mouthpiece and uses an activation button to push it out for single-dose administration.

A multimodal sensory device delivers synchronized visual and auditory stimuli to entrain brain oscillations for sleep promotion.