Wound Drains TRIZ Cases

Parallel wires and a tension control member bend the distal end of a drainage tube, resolving positioning accuracy limits in complex anatomical paths.

Orientation sensing mechanism detects reader tilt to calculate internal offset during magnetic field measurements.

Piezoresistive sensing elements integrated on the cantilever monitor deflection, enabling real-time operational status tracking.

A wearable medical device uses segmented disc-shaped housing parts to position the vacuum generator away from the body.

Electrolytic flow indicator tracks catheter usage to ensure compliance and reduce urinary tract infections.

An upstream pressure-actuated piston opens the valve only when ventricular pressure exceeds a threshold, preventing siphoning and backflow.

Heating means increase vapor pressure in a waste container to evaporate wound exudate fluid, reducing collection frequency and device weight.

Segmented adjustment ranges resolve the contradiction between precise vacuum control and device complexity in medical suction systems.

Circulating pump clears liquid columns from canister conduits, maintaining consistent negative pressure while reducing energy consumption.

A drainage tube uses a rotatable control device to reposition its distal end within a body cavity.

An integrated suction regulator maintains safe tissue pressure while enabling efficient urine removal at low vacuum levels.

Covalently attaching silk particles to a thermoplastic polyurethane stent extends therapeutic agent release duration to 168 hours.

A sliding collar and protruding element lock the tension member to secure the catheter position.

An implantable smartshunt uses electromechanical valves and feedback control to prevent catheter obstruction from over drainage.

Rotating connector pieces wind a tension member around a spooling region, securing the distal end without external sleeves.