Medical Devices TRIZ Cases

A sensing arrangement detects a shaft feature to determine remaining fluid volume, resolving occlusion detection gaps caused by obscured reservoirs.

Dynamic baseline comparison of actuation forces detects occlusions and prevents false alarms while ensuring proper reservoir seating.

Pump assembly detects wound dressing identity to adjust operational parameters automatically, resolving complex user interface bottlenecks.

Segmented sterile modules allow separate sterilization, reducing contamination risks and manufacturing costs during drug delivery device assembly.

A mechanical suction device maintains constant negative pressure using a sliding seal and spring assembly.

Capacitor charging circuit supplies voltage to valve driver circuits, preventing simultaneous valve operation to ensure precise metered doses.

A catheter system delivers embolic glue through a primary lumen while infusing dextrose via a secondary channel to create a protective barrier.

A skin-adherent device integrates continuous glucose monitoring with insulin dispensing through a shared subcutaneous tip.

A disposable infusion device uses a mechanical lock-out to prevent pump actuation during fluid delivery.

Integrated cap seal assembly merges sealing and connection functions into a single component for vaporization capsules.

Automated fluid management system adjusts hydration infusion rates based on real-time urine output monitoring.

An integrated securement device uses conductive connectors and proximity sensors to detect catheter movement, preventing silicone adhesion failure.

Automated dialysis system uses integrated pressure sensors to regulate fluid flow during fill cycles.

Segmenting the reusable pump from the disposable outlet channel prevents cross-contamination while limiting medium loss to under 15 µl during head exchanges.

Segmentation separates the reusable indicator unit from the disposable patient attachment, reducing cost and waste while maintaining reliability.

A catheter retainer channel maintains the pre-shaped tip angle, eliminating steam shaping and reducing preparation time.

Magnetic sensor tracks dose count via rotating magnet, resolving pawl stiffness trade-offs in aerosol dispensing apparatus.

Temperature and pressure sensors measure propellant gas properties to determine therapeutic fluid volume, eliminating invasive aspiration procedures.

Curved slit geometry distributes stress across the septum to prevent tearing during repeated device insertion.

Segmented microporous PTFE catheters distribute infusate evenly, preventing reflux along the insertion tract.

A hollow fiber membrane inhaler breaches internal obstructions using patient inhalation flow to aerosolize dry powder medication.

Angular walls in the delivery channel generate turbulence to regulate droplet size, reducing rebound and improving dosing precision.

An integrated check valve and elastic element in a drip chamber limit one-way valve opening from transient pressures, ensuring accurate secondary mode delivery.

A charging accessory device captures usage data from aerosol delivery devices and transmits it to social networking services.

An ingestible event marker produces a unique current signature upon activation by conducting fluid to monitor medication administration.

A medicament delivery device uses a detachable indicator unit to monitor fluid pressure via a flexible membrane.

Computer system correlates upstream and downstream thermodilution curves to determine cardiovascular parameters from local blood temperature deviations.

Segmenting the reusable flow detector from disposable tubing resolves complexity trade-offs while detecting occlusions, air bubbles, and leakage.

High-frequency linacs compensate for heart motion to minimize healthy tissue irradiation.

Automated urine valve actuates fluid flow for intra-abdominal pressure measurement, reducing infection risk from manual intervention.

Segmented adhesive patch uses varying adhesion strengths to secure instruments while allowing painless removal without skin irritation.

A peritoneal dialysis system separates fluid into protein-rich and protein-free streams for regeneration.

Chilled topicals reduce skin impedance and temperature, enabling deeper radiofrequency energy penetration while preventing thermal side effects.

Segmental bioimpedance spectroscopy detects ultrafiltration changes to prevent fluid reabsorption and optimize dialysis efficiency.

Reforming rib geometry on injector stoppers creates a flat sealing interface that prevents barrier wrinkles and scratches without silicone lubricants.

Segmented indexing distributes torque across cover motions to index multiple blisters, resolving high pivot force constraints.

An acoustic spirometer uses a flow controller and mobile device to resolve connectivity limits in asthma monitoring by capturing vorticial airflow energy.

Mechanical vibration ruptures membranes at defined timepoints, eliminating user intervention and reducing wound aggravation during biomarker monitoring.

Barcode reader integrated into infusion pump identifies reservoirs automatically, preventing upstream line mix-ups during multi-pump patient treatment.

Biased gearing replaces sliding contacts with rolling gear teeth to cut frictional losses and reduce energy consumption in injection devices.

Flexible base with adhesive layer and 360-degree rotation minimizes micro-motion, preventing catheter kinking and ensuring reliable insulin delivery.

A medical anchor device uses a spiral insertion mechanism to secure articles without sutures.

Saliva drainage prevents agent dilution, maintaining whitening concentration for effective home use.

A swallowable capsule uses an expandable balloon to align with the intestinal wall and deploy therapeutic agents directly into tissue.

A revolvable P-shaped restricting member integrates with the inhaler closure to mechanically constrain canister movement.

Valve-controlled expandable implant enables precise localized drug delivery to tumor sites while minimizing systemic side effects.

Applicator with absorbent tip releases therapeutic agents to treat cervical intraepithelial neoplasia while preventing acid spillage onto surrounding tissues.

Actuator generates partial vacuum to dislodge adhered gas bubbles from fluid reservoir interior surfaces.

Bidirectional pump generates controlled fluid pulses to overcome insufficient pressure in thin catheters for rapid anesthetic delivery.