Wound Drains TRIZ Cases

A vacuum wound dressing uses a fibrous blend that forms a cohesive gel when wetted by exudate to maintain therapeutic pressure.

A negative pressure wound therapy system uses a reactor to consume oxygen and reduce the enclosed volume.

An automated fluid drain controller integrates a multi-state valve and pressure transducer to regulate cerebrospinal fluid drainage rates dynamically.

A macroporous catheter with helical hollow wires selectively delivers medicaments and recovers bacterial cells from tissue sites.

A semi-permeable barrier in a wound dressing separates vapor from liquid, preventing pump failure caused by excessive fluid flow rates.

A chest drainage valve system clears pooled liquid and clogs using automated air injection cycles to restore negative pressure.

Multi-layer reduced pressure delivery system uses a hydrogel-forming release layer to bind tissue contact and manifold components.

Inclined slits open under pressure gradients to prevent blockages when the catheter contacts vessel walls.

Elastic expansion and liquid spreading materials sustain negative pressure during pump disconnection, preventing fluid backflow and infection risk.

A catheter apparatus uses vacuum suction to remove debris and clots from chest drainage tubes.

Interior ribs in a medical device case define fluid channels that redirect hydrating liquid away from the cap, preventing spillage upon opening.

Segmented packaging isolates the catheter tube in a liquid reservoir while keeping handling components dry, preventing evaporation and maintaining shelf-life.

Porous foam sinus wall implant wicks fluid via capillary action to ensure consistent medication delivery when ostia remain blocked.

A microprocessor-controlled shunt valve adjusts cerebrospinal fluid flow resistance using electronic signals from integrated pressure sensors.

An implanted sensor detects cerebrospinal fluid flow to replace invasive imaging tests, enabling non-invasive monitoring of shunt performance.

A medical drainage product integrates a pulling element inside the fluid communication tube to enable secure placement within body cavities.

A subcutaneous atomizer converts excess cerebrospinal fluid into an ultrafine aerosol for local disposal.

A dressing system with a non-planar sealing region accommodates sacral anatomy.

Resilient disk anchors secure a flexible catheter between the fetal bladder and skin to maintain stable fluid drainage.

Segmented rigid container and gel cap resolve complexity trade-offs to ensure reliable sterile seal and consistent lubrication.

Segmented intraluminal pump modules apply negative pressure to draw urine, alleviating venous congestion and sodium retention in cardiorenal syndrome.

Multi-branch surgical drains use flow controllers to compare branch rates, detecting blockages that cause false healing signals.

Segmented flexibility prevents reflux while maintaining peristalsis and easing removal.

An inflatable balloon blocks the drainage tube lumen, allowing an output device to clear pooled fluid from dependent loops without liquid backflow.

Photoelectric detection modules monitor fluid levels inside wound therapy collection bottles using total internal reflection principles.

A suction regulator decouples vacuum pressure from flow rate, preventing urethral tissue injury while maintaining safe urine removal.

A flat elastomer conduit distributes pressure across a large surface area to reduce patient pain while maintaining structural integrity under vacuum loads.

A drainage spout positioned above the collection opening creates a fluid trap using accumulated urine to seal the system.

A sealed container with ultraviolet emitters neutralizes bacteria on surgical drains, reducing infection risk without redesigning existing drain systems.

Portable surgical drain system uses integrated sensors to detect fluid volume, color, and orientation for automated monitoring.

A medical drain uses a porous wall for fluid communication between a central lumen and drainage channels.

Open-cell porous catheter tip enables continuous urine flow through interconnected pores, preventing blockages when discrete holes clog.

A programmable hydrocephalus valve uses a cam surface to adjust pressure via a helical spring mechanism.

Electrochemical impedance measurement replaces indirect pressure sensing to resolve false positives in hydrocephalus shunt obstruction detection.

An oscillating sealed fluid volume modulates cerebrospinal fluid to regulate intracranial pressure.

Impedance-based control drives a piezoelectric pump intermittently to remove mucus while preventing breathing interference and reducing power consumption.

An elastic sealing film compresses around drainage tubes to stop air leakage and maintain vacuum pressure in complex wound cavities.