Medical Devices TRIZ Cases

An automated enteral feeding system dynamically adjusts nutrient delivery rates using real-time physiological data.

Universal nest and adjustable latch structures enable one device to accommodate various infusion chambers, eliminating the need for separate tubing sets.

A pediatric inhaler uses a mobile element in a venting channel to visually confirm exhalation, resolving caregiver uncertainty about therapy delivery.

Alarm control unit stops notifications by detecting relative position changes between the device and its cradle.

Integrating a coiled heating element inside the handpiece minimizes heat loss during delivery, protecting healthy lung tissue from collateral damage.

A reusable ultrasonic monitoring system decouples the sensor from disposable lines, eliminating burst waste while maintaining reliable pressure detection.

A power injector system uses independent user interfaces at the control room and scan room to accept simultaneous inputs.

Nested terminals and segmented needle assemblies prevent electric shock risks during replacement while maintaining reliable electrical connectivity.

Segmented pump holders use flexible materials for comfort and rigid projections for retention, resolving wearability versus strength trade-offs.

Interlocking form fit structures prevent stopper deformation under operational forces while maintaining chamber tightness.

Exothermic agent heats elastic memory piece to compress foam layer, creating sealed micro-negative pressure environment without bulky VSD equipment.

Automated cannula rotation distributes skin trauma across multiple sites while an extended-life sensor maintains continuous glucose monitoring for seven days.

Optical and conductivity sensors monitor a suction regulator for contamination, triggering alerts that prevent vacuum system cross-contamination.

An articulating applicator device delivers topical substances to difficult skin areas.

Rotating hollow body inside catheter tube creates transport channel and mechanically breaks up coagulated blood drops.

Removable polymeric sensor modules integrate directly into plastic housings to measure fluid properties without semiconductor packaging.

A syringe adapter uses a spring-loaded pin to break liquid streams into atomized droplets.

Auxiliary fixing element with grooved engaging surfaces distributes vibration stress to prevent detachment of the nebulizing unit from the supporting portion.

A capacitive wetness sensor detects liquid presence using electrical capacitance changes.

A sealing device uses a collapsible neck and spacer to maintain an expanded aperture for secure needleless connector attachment.

An electrically conductive perforated plate blocks larger droplets via electrostatic attraction, limiting maximum droplet size and reducing cleaning frequency.

Cut portions segment the flange part, reducing width for narrow body parts and enabling a safety mechanism without compromising pressing force notification.

Automated analysis of low-dose fluorescence signals eliminates manual visual assessment and reduces surgical wash-out periods.

A catheter securing device uses tubular extremities and a connecting section to form a closed perimeter outline for secure attachment.

Solid radiopaque inserts mount to septum bases, eliminating fluid injection curing time and boosting production efficiency.

A timing controller operates a blocker based on circulating beam current to prevent intensity spikes during particle beam therapy.

Feedback control adjusts battery discharge to maintain constant drug delivery rates for viscous fluids.

A fluid flow control device uses a septum and locking mechanism to enable single-handed operation.

A single manifold connects two synchronized therapy units to provide continuous negative pressure and fluid instillation at a tissue site.

A tubular chamber retains a circumferential compression fit diffuser disc via spring pressure resisting force.

Segmented handle components allow quick access to internal chambers for clearing blockages while the deformable grip dynamically adjusts suction pressure.

A controller analyzes piston force and drug temperature to detect fluid flow irregularities in an on-body injector.

A surgical vacuum device uses a deformable distal tip to provide atraumatic suction for precise fluid removal.

A catheter shaft embeds a polymeric reinforcement layer within an intermediate structure to enhance tensile strength and flexibility.

A segmented drug delivery system uses an inert support to isolate reservoirs for independent release control.

A patient-specific mega spacer maintains anatomical space using 3D printed Nylon PA2200.

Negative pressure drives drug diffusion across the corneal epithelium, resolving the trade-off between invasive needle injection and poor topical retention.

Orientation sheaths in opposed lumens constrain out-of-plane deflection, enabling precise bidirectional control of the steerable catheter tip.

A catheter assembly employs a directional valve and segmented sleeve to resolve contradictions between handling ease, wetting efficiency, and leak prevention.

An infusion device uses an optical encoder to detect motor rotational speed for precise peristaltic pump flow rate control.

A single-piece powder inhaler uses a film hinge to join half-shells containing de-agglomeration structures for aerosol delivery.

Dynamic suction limit locking prevents excessive vacuum levels during sensitive procedures while maintaining collection efficiency.