Wound Drains TRIZ Cases

A separable snap-lock housing lets wound vacuum therapy users release and discard the fluid vessel with one hand while keeping secure wear.

A dual-frequency communication element lets an implanted shunt adjust lumen geometry wirelessly while also handling power transfer and data exchange.

A dual-frequency implantable antenna assembly enables non-invasive shunt adjustment, bidirectional communication, and power transfer with less bulk.

An adjustable shunt valve uses threshold opening pressure and feedback flow control to limit CSF overdrainage and stabilize ventricular pressure.

A spring-biased shunt valve with adjustable opening pressure regulates CSF flow to prevent overdrainage and maintain stable ventricular pressure.

A sliding sleeve adapter closes during air puffs and opens a reflux drain under backflow, keeping equine stomach contents out of the operator's mouth.

A movable valve body and spring use body position to vary CSF drainage pressure, limiting hydrostatic overdrainage in NPH shunts.

A 180-degree barbed stopcock and clip secure medical tubing without adapters or tape while maintaining large-bore drainage flow.

A spring-loaded cassette valve sets selective opening pressure to regulate CSF drainage and prevent ventricular overdrainage.

A one-way valve and hydrophilic foam insert prevent backflow, protect adhesive integrity, and reduce leaks in NPWT wound dressings.

A dual-path CSF shunt guard uses high- and low-resistance flow paths to curb siphon-driven over-drainage across patient positions.

Reduced-pressure abdominal drainage removes pro-inflammatory fluids, improves perfusion, and helps prevent compartment syndrome.

Real-time pressure sensing and actuator-driven levelling keep drainage or infusion devices correctly positioned as patients move.

A hermetically sealed flexible membrane and SAW resonators enable small wireless intracranial pressure monitoring with lower infection risk.

Detachable negative-pressure suction helps a pleural catheter drain fluid and promote pleurodesis, reducing reaccumulation and hospitalization.

A base, central post, and transparent lid secure CVAD or drain tubing to reduce dislodgement, infection risk, and skin irritation.

A reinforced member inside the drainage lumen enables mechanical drainage-member attachment while varying shaft flexibility to improve control and flow.

Varying rigidity and malleability along a drainage tube helps maintain negative incline, prevent fluid pooling, and reduce retrograde flow.

PTFE-covered catheter bores keep hydrocephalus shunts open by blocking tissue ingrowth and encapsulation while preserving CSF flow.

An expandable collar and reservoir enable controlled, intermittent flow between body lumens while reducing migration and patient discomfort.

A nested inner and outer sleeve keeps an intermittent catheter sterile in storage while allowing simple exposure, removal, and cleaner disposal.

Expandable anchors and an internal flow controller enable percutaneous CSF drainage while reducing incisions, anesthesia, and hospitalization.

Ultrasonic welding near drainage-member windows strengthens catheter tube attachment while maintaining a fluid-tight, stable urine drainage path.

A powered inner lumen clears shunt obstructions and maintains one-way CSF drainage, reducing revisions and infection risk.

A biomarker strip inside the catheter lumen detects urine changes linked to UTI risk, giving early color or wireless alerts.

Periodic sensor actuation limits tissue ingrowth and adhesion in interatrial shunts, preserving chronic measurement accuracy and removal.

A joined flexible tube guides the endoscope and drainage device together for accurate vacuum therapy placement in angulated cavities with less tissue damage.

An elastic annular collar replaces sliding seals in an implantable piston pump, cutting friction, complexity, and failure risk.

An absorbent package insert captures excess activating liquid, preventing spillage while keeping hydrophilic medical devices ready for use.

A cavity-induced turbulence and movable check structure help a urethral catheter pass stenosis smoothly while preserving urine flow and easing lubricant injection.

An external adhesive urine collector uses a high-absorption member and vessel structure to reduce infection risk and avoid invasive catheterization.

Deployable vein seals create a low-pressure fluid trap at the lymphatic outlet, draining lymph passively to relieve edema without pumps.

A dual-removal catheter assembly lets users withdraw the catheter with the protective sleeve or leave the sleeve in the package to improve comfort and handling.

Negative pressure draws tissue into contact-layer holes to disrupt biofilm and necrotic debris with less pain and tissue damage.

A burr hole plug secures the shunt valve and catheters to limit migration, kinking, and cranial deformity during CSF shunt placement.

A rotating screw-coil clears clots in thoracostomy tubes without harmful negative pressure, preserving drainage flow and reducing manual stripping.

A flexible saddle member constricts or expands the lumen to enable intermittent drainage, suction, and therapeutic agent delivery between body lumens.

Pressure-driven lateral valves recirculate pleural fluid internally, reducing repeat drainage, infection risk, and protein loss.

A diaphragm valve and suction pouch enable continuous ambulatory CSF drainage while controlling flow and reducing over-drainage risk.

Pressure sensing and variable suction keep chest drainage clear, detect obstructions, and improve fluid and air leak measurement.

A minimally invasive endovascular CSF shunt uses the natural pressure gradient to drain fluid while reducing infection risk and revisions.

A shaped sponge, flat suction interface, and hand pump deliver negative pressure wound closure while reducing necrosis, cost, and contamination.

A concealed retrieval string emerges after deployment to enable non-cystoscopic urological device removal while reducing discomfort and infection risk.

Optimized hole and lumen geometry raises CSF-driven wall shear stress to limit astrocyte growth and extend ventricular catheter life.

A rigid under-seat support structure secures catheter or wound drainage bags on wheelchairs to reduce tube tangling and user discomfort.

A flexible connector spaces the urine bag from the catheter tube, improving self-catheterization handling and supporting flow detection.

Hydration medium is routed through the drainage member to wet the catheter inside its sleeve, enabling ready-to-use insertion with lower contamination risk.

A hydrophobic vent film lets air escape while blocking urine, reducing splashing and helping confirm bladder insertion during catheterization.

Natural-fiber catheter substrates improve hydrophilic coating adhesion while reducing friction, cost, and environmental harm.

A displaceable reinforcing sleeve helps subcutaneous vascular graft lumens resist kinking and crushing while maintaining blood flow around damaged arteries.

A flexible inner chamber and check valve stabilize cerebrospinal fluid drainage, limiting siphoning and inconsistent shunt flow.

Gaseous VOC sensing with AI enables non-invasive, real-time detection of pathogen presence, load, and growth from clinical specimens.

A dual-seat CSF shunt valve uses gravity and spring force to open at lower pressure when lying down while limiting upright overdrainage.

An acoustic transducer insonifies a wound therapy canister cavity to determine resonant frequency and calculate fluid volume.

A urinary catheter assembly uses balanced water vapour transmission rates in nested packages to maintain hydration during storage.

A segmented medical dressing uses flexible bridge assemblies to maintain compression while accommodating limb swelling.