Wound Drains TRIZ Cases

Segmented pressure valves eliminate siphon effect overdrainage by maintaining minimum safety flow rates across varying patient postures.

Segmenting the control module from the distal probe eliminates internal valve obstruction while enabling remote operation.

A fluid collection system uses a disposable flexible liner attached to the lid for waste containment.

A catheter drain device integrates a movable plug valve and an antimicrobial cap to control fluid passage.

A universal electronic toolset detects fixed reference magnets to adjust programmable implantable valves.

A medical catheter integrates a temperature control element to manage blood heat during endovascular procedures.

A sampling port connector links a pressure transducer to a urinary catheter bypass lumen for intra-abdominal pressure detection.

A flexible fluid containment strip collapses under negative pressure to form a custom seal around irregular wound geometries.

A flexible wound tube uses hydrophobic and hydrophilic strands to prevent fluid backflow.

Dynamic balloon positioning along the urethra blocks urine flow effectively without causing localized irritation or trauma to sensitive tissue areas.

Replacing sponges with a flocked coating eliminates tissue adhesions and clogging risks while maintaining absorption capacity in vacuum therapy.

Open-cell polyurethane foam with controlled tensile strength prevents particle deposition and maintains exudate flow without additional layers.

Automated body fluid drain control system uses a multi-state valve to manage drainage rates and pressures.

Segmented laser-ablated drainage openings prevent bladder tissue suction and negative pressure pulses during intermittent catheterization.

Recessed guide channel in semi-rigid barrier directs catheter into urethra, preventing accidental vaginal insertion and reducing infection risk.

A locator aligns an actuator with a rotor micro-magnet to unlock and rotate the valve, resolving laborious manual alignment issues.

A pump-assisted drainage system filters beta amyloid and tau from cerebrospinal fluid, preventing recirculation into the brain.

A collapsible bladder end portion flares outward to anchor the stent while allowing urine drainage through its lumen.

A vacuum nozzle uses pneumatic suction to extract earwax and debris from the ear canal without mechanical contact.

An elongated stem seals the distal opening of a catheter reservoir, preventing lubricant drying and maintaining sterility during self-catheterization.

A wetting mechanism uses a capillary applicator to deliver fluid directly to the catheter tube surface.

Segmented inner reservoir delivers fluid through movable outer member to hydrate coating, resolving sterility versus handling trade-offs.

Active oxygen reduction within an enclosed wound environment minimizes hypertrophic scarring by controlling granulation tissue formation.

A luminal catheter employs a stop element to limit insertion depth, preventing dislocation and reducing blood flow obstruction in the dural venous sinus.

A vacuum-adherent pouch system uses a porous foam ring to compress against skin, creating a secure fluid barrier around body openings.

Porous foam sponge absorbs fluid via capillary action while external vacuum conveys liquid through tubing, reducing dead space and seroma formation.

Segmenting the film and adhesive layers resolves pin-holing risks while maintaining conformability for reduced-pressure therapy.

Removing sidewall eyelets eliminates urethral trauma and clogging while a curved guidewire ensures precise positioning for reliable drainage.

An auxiliary line creates a closed circuit for flushing drainage lines, eliminating external air contamination while enabling accurate pressure measurement.

Tapered port body edges create smooth transitions that prevent air leaks and maintain wound sterility during negative pressure therapy.

External stabilizer device secures catheter via hook mechanism at stoma site, eliminating balloon-induced bladder spasms and reducing infection risk.

A medical tube securing device uses interlocking receiver and tail teeth to form an adjustable loop for reliable fixation.

An adjustable implantable throttle uses a rotating disc to vary channel length and control cerebrospinal fluid flow.

Relocating drainage tubes to the periphery of a porous wound dressing maintains airtightness and prevents tube clogging during fluid withdrawal.

Wireless dressing integrates RFID and strain gauge sensors for real-time pressure monitoring at multiple tissue sites.

Depressions filled with soluble material dissolve over time, increasing device flexibility and forming channels for improved drainage.

Cylindrical forcep jaws in a surgical shunt assembly tool prevent catheter buckling and enable reliable attachment without hand manipulation.

Iontophoresis system removes electrolysis byproducts and controls localized pH shifts using continuous irrigation and negative pressure suction.

An electromechanical valve actuator adjusts shunt resistance via RF communication and spring mechanisms.

A passive mechanical valve with a non-linear spring regulates cerebrospinal fluid flow, reducing intraventricular pulsatility without electronic components.

A telescopic catheter coupling arrangement enables controlled extension and collapse of the device.

Expandable fluid chamber and one-way valves enable autonomous peritoneal fluid drainage, reducing complications from vascular infusion.

Segmented intracranial bolts with a pump and sensors evacuate hematomas while preventing air introduction.

A ventriculoperitoneal shunt incorporates a contrast container with microbubbles to change acoustic impedance in response to pressure changes.

Replacing electric pumps with a manual bellows mechanism enables ambulatory patients to maintain mobility while delivering effective reduced pressure therapy.

A wound dressing uses a liquid permeable pressure barrier to remove exudate while maintaining atmospheric pressure at the wound site.

A medical appliance integrates an electronic processor and display to store instructional video content, eliminating time spent reading manuals.

Multi-element silencing system in wound drainage apparatus reduces aspiration pump noise levels.