Stents TRIZ Cases

Blood-pressure-driven piezoelectric stents generate a low-intensity electric field to inhibit cell attachment and reduce restenosis without drug coatings.

An integrated branch valve uses resilient self-sealing walls and a finger actuator to vent air and control blood flow with less tool coordination.

A locking arm fixes the delivery handle to the introducer sheath to prevent axial shift and keep the prosthetic valve at the target site.

Flaring atrial and ventricular anchors compress native tissue to improve mitral valve placement, size matching, and retrieval in minimally invasive surgery.

A two-sided adhesive tubular insert closes insufficient veins by expansion and mechanical anchoring, avoiding heat, burns, and nerve damage.

A flexible sheet pocket inside a rigid cylinder simplifies stent graft reloading and loading while avoiding bulky iris crimpers.

Separable circumferential stent rings preserve initial radial support, then restore vessel compliance and allow later expansion.

An expandable stent graft and impeller create pulsatile blood flow while reducing vessel damage, clotting risk, and invasive placement.

A reconstraining member enables a stent delivery system to resheath and reposition a partially or fully expanded stent after deployment.

A tapered, self-expanding stent varies diameter and rigidity along the jugular vein to improve fit and reduce migration.

Different wavy-ring coverage regions balance fenestration size with axial support, helping prevent graft retraction and branch-stent separation.

An occlusion balloon and active aspiration create confirmed carotid reverse flow to capture lesion debris without crossing the blockage.

Flexible anchors and thin-film seals help vessel-to-chamber shunts reduce pulmonary pressure while limiting leakage and chamber-wall damage.

A thumbwheel enables precise initial sheath withdrawal while a slider completes deployment quickly, improving stent positioning accuracy.

An elastic hook anchor and dual-gripper catheter secure artificial chordae with less invasive mitral valve repair and lower dislodgement risk.

A single catheter combines contrast flushing, vessel length measurement, and device guidance to cut exchanges, blood loss, and procedure time.

Pressure relief ports let blood escape during stent-graft deployment, reducing the windsock effect and migration risk during positioning.

Open spiral channels support fluid flow while anti-migration tails keep a bioabsorbable stent positioned during treatment.

Embedded modulating elements limit radial pad bulging while preserving axial engagement for controlled intravascular implant resheathing.

A braided loading basket combines stent reception, positioning, and retention to simplify assembly and prevent shifting during delivery.

An integrated catheter combines penetration, guidewire deployment, stent delivery, and wall tensioning to limit leakage during luminal access.

Alternating loop-and-rung rows and uninterrupted cutout regions help a knitted endoprosthesis flex around anatomical motion while limiting stress concentrations and fractures.

Separate syringes complicate multi-balloon procedures; an integrated dual-valve handle enables sequential, simultaneous, or independent inflation and deflation.

Axial slack keeps prosthetic valve leaflets relaxed during partial radial compression, limiting overstretching and protecting function during delivery.

Selective constraining fibers help stent-grafts move from compressed delivery to adjustable expansion before final deployment.

Electrospinning forms a biodegradable fiber sheath for initial vascular sealing, then degradation supports endothelialization and helps reduce thrombosis risk.

Sequentially released constraining members help position expandable stents accurately while limiting displacement during minimally invasive deployment.

An hourglass inner frame, fabric skirt, and atraumatic anchors target paravalvular leakage and tissue trauma.

Serially deposited fibers and ePTFE layers balance endothelial cell growth with control of cellular and fluid permeation.

Retractable flat wires couple self-expanding frames inside a sheath, enabling controlled release and helping reduce vessel trauma during valve implantation.

A reversible self-expanding stent keeps Schlemm's canal open, supports aqueous drainage, and reduces reliance on glaucoma eye drops.

An expandable wire implant moves from low-profile delivery to airway support while preserving mucociliary clearance and limiting tissue contact.

A fluid-filled sleeve peels away from the stent during deployment, limiting friction, coating damage, and handle bulk.

A resilient release member controls stent engagement during delivery, helping prevent persistent contact and support complete expansion.

Balloon deflection forms scallops during graft deployment, aligning the graft with renal arteries while preserving branch flow and seal.

Subintimal navigation creates a controlled vessel-wall plane to cross chronic total occlusions while limiting perforation risk and avoiding open bypass.

Repeating V- and R-shaped elements with oriented connectors coordinate radial expansion and help limit foreshortening during stent deployment.