Wound Drains TRIZ Cases

Merging separate connection components reduces structural complexity and manufacturing costs while ensuring safe handling of bodily fluids.

A lumbar intrathecal catheter connects to a subcutaneous dual reservoir pump enabling simultaneous bidirectional cerebrospinal fluid exchange.

Hydrophobic exterior prevents fibrous tissue encapsulation while internal porosity stabilizes the implant.

A flexible impermeable overlay collapses to form a hermetic seal with the body under reduced pressure.

Umbrella-shaped flexible mechanism expands into a funnel structure to prevent vesicoureteral reflux in ureteral stents.

Implanted reservoir draws patient fluid via osmotic pressure through a semipermeable membrane, eliminating harsh suction or pumping mechanisms.

An integrated liquid-air separator protects the pump from fluid damage while maintaining reduced pressure at the wound.

Segmented membrane channels deliver negative pressure while separating exudate from the source to prevent clogging.

A urinary probe assembly uses a hydrophilic coating on its introducer sheath to reduce friction during insertion.

A hydrocephalus shunt valve employs a resistive adjustment circuit to modify pressure settings without magnetic interference during MRI procedures.

Self-expanding flow connector eliminates suturing to reduce leakage and thrombosis risk during anastomosis.

Reduced pressure transmits through a conduit to move valves, regulating liquid delivery to a tissue site while preventing uncontrolled fluid accumulation.

A shunt flusher uses a reservoir to pressurize cerebrospinal fluid and rapidly release it as an impulse flow, clearing occlusions without surgical intervention.

Fluid pressure actuates a clamp on the catheter shaft to secure or release a ureteral stent, eliminating invasive cystoscopy procedures.

A subcutaneous ureteral bypass device connects renal and bladder catheters to a sampling port for long-term urinary diversion.

Normally-closed valve integrated into medical dressings enables fluid removal while maintaining a sealed environment.

Segmented catheter tips utilize pulsatile flow to dislodge debris, reducing clogging in narrow shunt passageways.

An electronic pump creates periodic bolus flows to clear blockages while passive pressure drives drainage, extending battery life.

Tungsten-infused polymeric catheter resolves the trade-off between flexibility and ultrasound detection, enabling precise pleural drainage.

A soft skin-mounted device measures subdermal fluid flow using thermal actuation and temperature sensors.

Resilient membrane and opposing sealing features enable manual finger depression to clear proximal and distal catheter obstructions.

A telescopic urinary catheter assembly uses a retractable protective tube to expose the hydrophilic coating for insertion.

Pleated regions in the storage tubing constrain the catheter to prevent kinking while minimizing space consumption.

A variable wound dressing transitions from pliable to rigid under reduced pressure to maintain a consistent treatment space.

A flexible sealing device prevents fluid leakage from surgical drains by adapting to skin movement, reducing dressing changes and infection risks.

A detachable pump uses a diaphragm element to generate vacuuming force for wound fluid management.

Embedded transmission wires apply electromagnetic energy to clear detected blockages, avoiding external tool insertion risks.

Integrating poly-N-acetylglucosamine nanofibers into negative pressure systems achieves hemostasis without triggering foreign body responses.

A subdural drainage catheter incorporates a movable stylet that extends through the lumen to mechanically disrupt internal blockages.

Curved filter surfaces prevent liquid bypass across multiple orientations, ensuring reliable reduced pressure transmission.

An adjustable hydrocephalus valve employs a magnetically activated brake and spring system to resolve friction contradictions during rotor positioning.

A drainage catheter uses a braided reinforcement with varying filament patterns to create localized regions without filaments for hole formation.

A self-contained micropump applies subatmospheric pressure to draw wound fluids away from the dressing interface.

A portable negative-pressure device uses a manual piston and spring to generate suction, eliminating bulky electric pumps for improved patient mobility.

Multi-branched shunt valves prevent cross-draining between brain sites by using one-way mechanisms to isolate drainage paths.

Segmented shunt catheter design prevents choroid plexus obstruction while maintaining reliable valve functionality.

Corrugated outer neck and smooth inner taper resolve urine retention in the drain tube section while simplifying connector attachment.

A CSF diversion system moves fluid to unblock glymphatic transport pathways.

Variable porosity zones in a duodenal spine impede ingesta passage, extending lipid residence time for sustained hormonal regulation.

Micro-porous membranes filter interstitial fluid to shield the sensor from biofouling, extending monitoring lifespan.

An adjustable drainage chamber employs a movable barrier and buoyant valve to constrain fluid volume, preventing over-drainage complications.

A manually actuated pump uses a hydrophobic filter to apply reduced pressure at tissue sites without electrical components.

Radially elastic, axially non-elastic tubular cover retrieval uncovers devices inside elongated tubes, preventing tissue trauma during colon deployment.

A slit-based antimicrobial hydrogel sleeve delivers agents near the urethral opening to inhibit biofilm formation on conventional catheters.

Textured handle elements on elongated mechanical fasteners enable glove-friendly detachment of drainage reservoirs from elastic support bands.

A urinary catheter system transitions between usage and storage states using a dedicated containment bag.

Monitoring pump power and source pressure differentiates leaks from canister disengagement, eliminating flow sensor errors.

Segmenting the pouch and using a PEG tube resolves stoma management conflicts, enabling oral hydration while wearing discreetly.

Segmented hydrophobic filters isolate pressure sensors from fluid contamination, maintaining accurate vacuum measurement during negative pressure wound therapy.