Wound Drains TRIZ Cases

An occlusion resistant catheter tip uses a movable disc and elongated orifice to prevent tissue ingrowth while maintaining fluid flow.

An integrated sheath with a urethral flow structure and adjustable retainer stabilizes catheters while reducing infection risks.

A wound dressing micropump system moves fluid from the wound bed using subatmospheric pressure.

Segmented wound dressing ports distribute apertures to prevent occlusion by migrated filler material and exudates.

A liquid pressure regulating system switches fluid paths via a sensor-controlled valve to maintain constant pressure without manual intervention.

A vacuum drainage device uses a gel membrane to maintain skin compatibility while the sealing film ensures an airtight perimeter.

Non-parallel internal surfaces redirect vacuum pressure to produce horizontal contractile forces for effective wound closure.

Tapered spout portions bracket ureteral occlusions while a porous tubular section maintains fluid flow, reducing pain and irritation.

A steam sterilized catheter assembly uses a small volume of wetting liquid to maintain the hydrophilic surface in an activated state.

Optical sensors measure drug levels in cerebrospinal fluid to prevent toxic peaks and sub-therapeutic troughs during chemotherapy delivery.

A manually-actuated pump with a spring-loaded regulator delivers controlled reduced pressure, enabling portable wound therapy without trained personnel.

An intermediary porous matrix distributes negative pressure uniformly, reducing tissue trauma while maintaining effective wound closure rates.

Control thermistors subtract environmental noise from shunt-aligned sensor signals, enabling accurate non-invasive CSF flow rate determination.

A postoperative CSF dynamical examination method determines optimal shunt opening pressure using real-time intracranial pressure measurements.

A lockable hub secures a drainage catheter suture via a depressible button, enabling safe removal by straightening the tip and eliminating tissue damage risks.

Segmented bag design with a narrow channel resolves the contradiction between sterile closure and ease of operation.

A wound dressing apparatus integrates an internal vacuum reservoir and visual pressure indicator to manage subatmospheric therapy.

Integrating a reservoir with a catheter access port enables simultaneous chronic and acute delivery of therapeutic agents.

A pole-mounted camera captures chest tube display data, eliminating the need to bend or kneel for reading fluid drainage levels.

A ureteral stent uses a hydrophilic wick portion joined to a renal coil to facilitate urine flow and anchor the device.

A shunt valve system uses two tandem variable pressure valves to precisely regulate cerebrospinal fluid flow rates.

Segmented canister filters and one-way valves prevent exudate from blocking suction ports during patient mobility.

An implanted wireless pressure sensor monitors intracranial pressure via RF energy, eliminating invasive diagnostic procedures and reducing infection risks.

Segmenting impedance into thoracic and extra-thoracic vectors resolves diagnostic accuracy issues caused by overlapping pulmonary edema symptoms.

A chest drainage system circulates fluid through intake and exhaust devices to displace internal contents for sensor analysis.

A reusable therapy container pairs with a single-use dressing connector containing an inline liquid barrier to manage fluid paths.

Porous mesh fabric anchors shunt components to the peritoneum via tissue ingrowth, preventing lumen migration and ensuring consistent CSF reabsorption.

Transparent dressing layer with targeting grid enables precise vacuum port placement.

Asymmetric locking member prevents catheter retraction into packaging by maintaining resistance during self-catheterization.

A retractable filament mechanism creates a secure loop at the catheter distal end, eliminating suture entanglement and fluid leaks during locking.

Vacuum compression coats catheter insertion end while preventing lubricant migration to the fixture end.

Microfiber active elements maintain softness under vacuum, eliminating foam stiffness and patient discomfort.

A magnet shield cage isolates sensor arrays from residual magnetic fields in implantable drainage valve toolsets.

A non-metallic retractor device uses a ratchet arm and integrated shunt retainer to secure surgical tubing.

A sterile dual-purpose urinary catheter system houses a pre-lubricated catheter within an extensible sheath that functions as both a drain line and collection bag.

A ventricular shunt assembly operates within a hyperbaric environment to correct intraparenchymal venous pressure and reduce ventricular size.

A catheter connector uses a nested hollow member and flexible sleeve to create a secure vacuum seal for drainage tubes.

A ureteral stent with a degradable coating prevents bacterial adhesion by breaking down over time, eliminating biofilm risks and invasive removal.

Elastic catheter curvature brace straightens for insertion then returns to a relaxed curved configuration, avoiding choroid plexus obstruction.

A one-way valve enables fluid recirculation from the abdominal cavity into the venous system.

A portable negative pressure wound therapy apparatus uses fluid flow restriction and pressure sensing to detect full waste canister conditions.