Wound Drains TRIZ Cases

A tubular shunt redirects oxygen-rich blood from the ventricle to the coronary sinus to improve myocardial oxygenation with less invasive revascularization.

A spring-loaded catheter valve lets patients test bladder pressure at home before catheter removal, reducing failed voiding trials and infection risk.

A porous plug with interconnected channels keeps suction drainage paths open by blocking tissue ingrowth while allowing bodily fluid to flow.

A hydrophobic vented collection bag keeps portable wound suction working in any canister position while reducing leaks and odor.

Nested wetting chamber sections with projections and snap fit enable controlled catheter wetting before use while protecting handling and shelf-life.

Positive air pressure in a connector-adapter assembly clears retained urine from tubing loops, reducing bladder pressure and measurement error.

A hydration-fluid case sterilizes and lubricates a hydrophilic urinary catheter for repeated storage, transport, and reuse.

A hydrolysis-driven polymer holder lets an attenuation clip close congenital portosystemic shunts gradually, avoiding hypertension and incomplete closure.

A pressure-responsive sidewall regulator controls CSF diversion into the venous system while limiting backflow, occlusion, and kinking.

A removable tubular adaptor and sleeve isolate body fluids, reduce mucosal injury during insertion, and support integrated catheter use.

A venous catheter-delivered CSF shunt treats hydrocephalus with physiological drainage, avoiding skull drilling and lowering infection risk.

A hydrogel cranial implant uses drainage canals, drug delivery, and brain-contact sensors to relieve pressure with less invasive herniation care.

A multilayer fixation strip improves wound dressing sealing, reduces leakage, and supports effective negative pressure wound therapy.

Sensors track resin bead shape, flow, and viscosity to detect gel degradation in an artificial kidney before filtration performance drops.

Deployable vein seals create a fluid trap at the lymphatic outlet, enabling passive lymph drainage without blood mixing or mechanical pumps.

An integrated imager and drainage channels enable real-time ureter navigation and stent placement without fluoroscopy radiation.

A recessed shunt valve inside the ventricular catheter stabilizes placement, limits kinking, and reduces bone resorption and cranial deformity.

A flexible saddle constriction enables intermittent or periodic drainage between body lumens while also supporting agent delivery and suction.

An integrated absorbent layer, microporous membrane, and pump collect exudate and apply negative pressure without a separate therapy unit.

Variable-resistivity conductive paths focus heat on strained shunt regions, cutting actuation energy and reducing slow asymmetric response.

Collected stoma output is pumped back into the distal GI tract to restore fluid and nutrient absorption and reduce dehydration.

Pressure-responsive leaflet flaps on the stent wall block bladder reflux while preserving drainage and guide wire passage.

Magnetic actuation replaces implanted electronics to move body fluids through multi-branch lines for drainage, drug delivery, and sampling with MR compatibility.

A microcontroller valve with pressure and tilt sensing stabilizes ICP, prevents overdrainage, and enables remote shunt calibration.

A perforated bolster collapses under negative pressure to close linear tissue sites, speed granulation, and limit tissue damage.

Pulmonary artery pressure feedback triggers urinary catheter suction only when needed to relieve renal congestion and fluid overload.

A separable chest drain connector uses a one-way valve and defined breakaway force to prevent tube dislodgment while maintaining drainage.

A handle cavity stores the folded urine bag inside the catheter kit, cutting bulk and assembly steps while preventing backflow.

A pressure-responsive shunt regulates flow between heart chambers to lower filling pressure and reduce pulmonary fluid buildup in CHF.

An externally actuated internal valve enables on-demand bladder voiding while reducing repeated catheter insertions, infection risk, and urethral trauma.

A motor, wave spring, and valve core enable rapid blood pressure reduction with precise opening-pressure control for routine or emergency use.

A suction regulator enables high urine flow at low vacuum pressure, helping external female catheters protect delicate urethral tissue.

By nesting the urine bag inside the handle cavity, the kit stays compact, avoids extra retention parts, and is easier to grip and use discreetly.

A hook-and-strut air-knot secures percutaneous drains without sutures, limiting kinking and dislodgement during dressing changes.

A manual elastic-recovery pump and check valve maintain wound exudate suction without power, cutting bulk and improving patient mobility.