Medical Devices TRIZ Cases

An electrochemical pump generates driving force to move drug solution automatically.

A prefilled syringe couples to an infusion pump reservoir via a threaded or snap-fit interface mechanism.

A wound dressing incorporates sensors to measure physiological characteristics and a controller to determine precise sensor emplacement within the substrate.

A pellet magazine uses elastic bars that bend to dispense pellets, resolving the contradiction between secure storage and easy filling.

Vacuum suction moves monomer through a cannula into polymer powder, resolving slow distribution in bone cement.

Segmented shafts with keels enable precise steering through thick tissue layers without losing stability.

A composite antimicrobial coating on catheter surfaces inhibits microbial colonization through a copper-based layer, preventing sepsis without metal elution.

Segmented hindfoot and forefoot sections conform to anatomical contours while gel apertures align with fluid restrictions to direct instillation.

A universal irrigator port connects multiple injector types via a segmented joint portion and check valve mechanism.

An adaptive algorithm regulates vacuum levels in thoracic drainage systems by monitoring air fistula size through volumetric flow measurements.

Electroactive polymer port gates modulate fluid flow through implantable neural drug delivery threads.

A wearable apparatus positions an auditory output device on a holder's hand to generate soothing sounds directly adjacent to an infant's ear.

A multi-layer catheter tube uses a nylon odor barrier film sandwiched between thermoplastic elastomer layers to create a flexible medical device.

Pre-formed compound curves navigate curved iliac arteries, resolving positioning accuracy issues without complex active control mechanisms.

Automated suction control clears fluid pooling in drainage tubing, enabling accurate volume measurement and timely chest tube removal decisions.

Capacitive micromachined ultrasonic transducers detect tubing dimensions and fluid velocity in medical pumps.

Disposable tactile cards alleviate anxiety and PTSD symptoms without pharmaceutical side effects or high costs.

Thermoelectric devices exchange thermal energy with intravenous fluid to resolve slow manual warming inefficiencies.

A nebulizer secures a pre-installed container with a torsionable member that prevents fluidic connection until manual activation.

A peritoneal dialysis system detects line occlusions and estimates intra-peritoneal pressure using integrated sensors and a control unit.

Customizable cuff positions resolve drain pain and fluid exchange inefficiencies by accommodating varying patient anatomies.

Movable connecting members absorb stress peaks during closure, ensuring secure locking without high force transmission.

A hollow tubular element incorporates a sheet-formed support barrier across its inner region to stabilize upstream components.

A compressible suction device with a permeable outer layer extracts excess fluids from muscle compartments to manage intracompartmental pressure.

Segmented adhesive borders with disposable inserts enable negative pressure therapy on complex body topography without increasing application time.

Pressurized gas jets treat needle surfaces to reduce contamination and penetration force, resolving pain during injection.

Cam surface mechanism triggers flexible segment activation to prevent catheter obstruction from residual blood volume.

Dual apertures in the partition wall isolate the filter from exudate, preventing protein deposits and false alarms during orientation changes.

A dispensing device dividing wall creates turbulence to break down substances into small particles while ensuring complete chamber emptying via pneumatic flow.

A delivery adapter uses a micro-tube to transfer embolic material directly through the catheter hub.

Protruding elements on a planar grid support capsules to generate turbulence without decelerating airflow, reducing manufacturing complexity.

Resilient engaging members flex into abutment with a rigid component to prevent partial resets, ensuring accurate dose counting.

A fluid delivery system uses a closed sensing tube filled with gas to detect liquid front movement within the outlet path.

Flexible fingers on a vaporizer cap require force to open, preventing child access.

Acoustic measurement system determines fluid volume without mechanical evacuation, eliminating therapeutic fluid loss during precision monitoring.

Laser-drilled frustoconical orifices in disposable connectors maintain accurate flow rates without complex pumps, reducing mechanical failure risks.

Segmented piston bodies with accommodation and buffer spaces prevent medication leakage by maintaining seal integrity during dynamic pipe motion.

Removable inserts deliver heat, cold, and essential oils to improve sleep quality while preventing allergic reactions.

An infusion slide clamp uses an integrated support arm to orient tubing, preventing kinking and ensuring proper loading.

Nested collapsible drainage components collapse sequentially to evacuate fluid from deep wounds without reopening surgical sites.

Deployable impeller and stream former reduce hemolysis by enabling low rotational speeds while maintaining cardiac output.

Rotating the cartridge changes the overlap area between the inlet and outlet, providing continuous draw resistance control without adding structural complexity.

Sealing the inhaler into a test compartment isolates ambient conditions while monitoring pressure changes to verify dose accuracy.

A catheter valve uses a locking device on its control lever to prevent jamming with other sheaths, enabling reliable withdrawal of the introducer.

A surgical cleaning head directs pressurized gas tangentially along bone surfaces to dislodge debris and biological fluids.

Merges calibration with sterilization to resolve the contradiction between high throughput and cross-contamination risk.

Metal powder injection molding shapes stainless steel valve stems with smooth internal surfaces.