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.

An atmospheric vent equalizes pressure to prevent overdrainage during patient mobility, enabling MRI compatibility.

Axial bottle movement engages a laminate seal element to dispense fluid through a foam pad, eliminating glass ampoule risks.

A catheter tip with a rotating element moves within the ventricle to maintain fluid flow.

A hydrocephalus valve adjusts drainage rates via a movable body, preventing overdrainage by matching outflow speed to individual ventricular pressure needs.

One-way valves prevent backflow that dissolves adhesives, while pinch valves enable one-handed drainage without spillage.

A steerable catheter uses retractable latching structures to engage spaced-apart anatomical targets for precise device positioning.

A catheter distal end deforms into a spiral shape to cover ports and prevent blockage.

Replacing invasive balloon procedures, a remote heater triggers polymer phase transitions to control intermittent occlusion in physiological channels.

An elastomeric anchor assembly secures a catheter using an integrated adhesive dressing on a flexible flange.

A chest tube fastener uses a staple-ready base and cinch handle to secure medical tubing.

A conformable thermosensor pad detects cerebrospinal fluid flow using thermal dilution technology.

Segmented magnetic adjustment in this hydrocephalus valve prevents unintended shifts while enabling precise cerebrospinal fluid pressure regulation.

Segmented suction device maintains constant bore diameter through rigid air inlet zones while flexible tips navigate anatomical contours.

A stent kit uses an inner catheter matching the arc-shaped parts of a pig-tail stent tube to maintain structural integrity during delivery.

Segmenting the pump control unit from the canister prevents contamination while allowing the canister to be disposable.

A drainage valve uses a rotor and camway to adjust opening pressure via centrifugal force.

A flexible overlay collapses under vacuum to form a hermetic seal without adhesives.

Segmented elastomeric drains deliver direct negative pressure to closed wounds, reducing infection rates and convalescence time.

A reduced-pressure bridge transfers vacuum through a delivery manifold to treat tissue sites in confined anatomical locations.

Segmented micropumps with nested porous elements actively drain distributed interstitial fluid to resolve chronic swelling in lymphedema treatment.

A tubular reservoir uses magnetic forces to stabilize spring pressure for consistent negative pressure drainage.

A fluid collection device separates air from liquid using channel dividers to enable accurate flow measurement.

Varying stiffness sections in the polyvinyl alcohol shaft resolve handling contradictions by providing inherent lubricity without external gel mess.

Optical volume measurement enables the microprocessor to modulate valve position, preventing over-drainage risks associated with manual monitoring.

Continuous pressure signal processing identifies cardiac beat-induced waves using template matching and threshold criteria.

A subcutaneous pump with integrated sensors and control circuitry manages cerebrospinal fluid removal.

An implantable bio-pressure transponder extracts sensors from the brain parenchyma to enable continuous cerebrospinal fluid monitoring without tethering.

A disposable wound dressing integrates a pump, absorbent layer, and gas permeable filter to generate negative pressure.

Collinear ports in a modified Y connector allow tool insertion to remove clots while tethered caps maintain sterility and prevent infection.

Merging a packing member with a cover layer simplifies application steps while maintaining fluid-tight seal integrity.

Integrated fastening means narrow the suction bag laterally and longitudinally, eliminating manual straightening errors during rapid emergency placement.

Integrated suction tube prevents clogging from bone chips during spinal surgery, ensuring accurate nerve location.

A surgical drain incorporates a diameter-varying element to adjust its cross-section during use.

Segmented overlay panels adapt to diverse wound shapes, reducing inventory costs while maintaining precise vacuum levels.

A sterile piezoelectric pump assembly delivers negative pressure to wounds using a disposable canisterless design.