Medical Devices TRIZ Cases

A rotating locking cap with a contact plate prevents accidental activation in tattoo machines.

An implantable infusion device adjusts therapeutic fluid delivery rates using integrated internal catheter pressure monitoring.

A ring-shaped identification component with a customizable surface connects reversibly to an aerosol-generating device.

A two-stage system uses perfluorocarbon carrier fluid to transfer oxygen and carbon dioxide between gas and physiological fluids.

Segmented tether design reduces molding pressure and plastic waste while improving packaging flexibility for medical suction canisters.

Segmented dual balloon system with one-way valves maintains inflation pressure, preventing catheter removal when the outer balloon deflates.

A pressure compensating device stabilizes IV therapy flow rates by flexing a diaphragm to adjust the outlet port against fluid head pressure variations.

A dual bore connector joins separate lumina via a circumferential groove, eliminating counter-current flow interference in medical tubing assemblies.

An inflatable bag mechanism replaces complex pistons to reduce breakdown risk and manufacturing costs while maintaining precise injection control.

A fluid administration system uses closed-loop quasi-static adjustment of in-line pressure-based resistance to regulate flow rates precisely.

A wound-care assembly uses a fiber-optic patch to deliver ultraviolet light while a fluid conductor applies relative vacuum pressure.

Combining RGB and infrared illumination expands spectral detection space, resolving insufficient color recognition precision in medical infusion pumps.

An intermediary membrane between the receiving region and fluid drive component improves pump efficiency and ensures complete delivery of reservoir contents.

Intermediary microfiber sleeve isolates patient skin from sliding catheter movement, preventing decubitus and adhesive reactions.

Absorbent pouch captures excess wetting fluid to prevent leakage while maintaining sterility during catheter withdrawal.

Clear substrates enable vibrant printed designs on transdermal patches, resolving the trade-off between drug delivery and aesthetic expression.

Segmenting the handle into a universal base and configurable extension adapts new shaft configurations without redesigning the entire assembly.

A suction device uses a secondary air unit to create linear vacuum changes from equal adjustment paths.

Detectors monitor spring length changes in an injection device to trigger feedback signals, resolving user uncertainty during dose dispensing.

Protrusions on a guiding element reduce areal contact and friction, lowering the force required to operate the inhaler.

A cyclotron magnet yoke integrates a pump acceptance cavity to house the vacuum pump directly within the magnetic structure.

A sleep inducing device plays constant environmental sounds through speakers to guide users into natural sleep cycles without modulation.

A compacted iron graphite copper structural element delivers active agents through galvanic corrosion.

Segmented nozzle design uses elastic deformation to preserve aerosol droplet spectrum integrity.

A medicament delivery device uses a movable tension control element to equalize sealing layer tensions, reducing mechanical complexity and spilling risks.

Replacing pressure-based occlusion detection, this vertical thermal sensor identifies bubbles via heat transfer changes independent of medication type.

A blocking device locks a rotatable counter element until the housing connects, preventing undesired actuation during transport.

Segmented thickness resolves the strength versus openability contradiction, preventing breakage while ensuring reliable fluid circulation.

An electrical impedance sensor embedded near the catheter tip detects fluid flow conditions in real time.

A therapeutic agent delivery system uses ultrasound energy to enhance local drug dispersion through controlled cavitation and microstreaming effects.

A swallowable bolus uses a magnetic field to expel active ingredients from the rumen on demand.

A vascular graft with a support frame expands its cross-sectional area while maintaining a constant perimeter to absorb pulsatile blood flow.

A partially porous mesh forms a fibrosis cage to enable continuous intracorporeal dialysis, reducing infection risk from intermittent extracorporeal treatments.

An enlarged flange and adhesive plaster replace complex suturing, providing reliable line fixation without specialized skills.

Pressure sensing detects patient connection before activating the sampling pump, preventing unnecessary wear and contamination of measurement components.

Nanotextured surfaces promote fibroblast adhesion while vacuum draw reduces bacterial colonization, preventing infection risks during extended use.

Automated stage system positions radioactive seeds with variable spacing, resolving fixed needle constraints to improve dose distribution.

Segmented piston washer reduces relaxation time and prevents cartridge breakage during frost exposure.

Asymmetric locking arms eliminate manual alignment in low-light conditions, allowing the interlock adapter to snap securely into a catheter base.

A portable liquid oxygen system uses a Stirling engine to rapidly convert stored cryogen into gas for patient ventilation.

A compact intravenous access device adheres to skin via a coupling element, integrating a port and sampling unit for ambulatory use.

Controller switches to fluid temperature proxy during medication events.

A foldable needle assembly uses a helical spring to automatically extend a protective ring after injection.

An oxygen depletion device uses a scavenger within hollow fibers to remove oxygen, extending red blood cell storage life by preventing oxidative damage.

A dry powder inhaler uses a rotatable housing and axially movable chimney to shield airflow and reduce mechanical noise.

Cam-driven rotatable anchors deploy through minimal incisions, reducing procedural time and tissue trauma during gastric band implantation.

Movable clamp members house RFID reader antennas to detect syringe tags for secure engagement.