Venous Valves TRIZ Cases

Flexible leaflets held away from the vessel wall improve sealing across varying vessel diameters while reducing stress and preserving retrograde flow control.

A catheter-delivered independent gripper coapts mitral valve leaflets with repositionable fixation to reduce regurgitation and tissue trauma.

Movable grippers and fixation elements enable precise leaflet coaptation, repositioning, and removal in minimally invasive mitral valve repair.

An asymmetric partial sinus creates vortex blood flushing around the valve leaflet to limit stagnation, thrombosis, and loss of valve function.

A movable junction and leaflet vary lumen size with blood pressure to lower right atrial pressure without starving kidney perfusion.

Integrated sensors, radiopaque markers, and docking frames help monitor cardiac physiology while anchoring prosthetic valves and managing blood flow.

Pressure-responsive leaflets modulate venous flow, reducing right atrium pressure while preserving blood flow during exertion.

Extracting one xenogeneic aortic leaflet onto a tissue patch simplifies harvesting while supporting durable, low-flow venous valve replacement.

Dual-frame venous valves use polymeric leaflets and catheter deployment to restore venous function while limiting thrombus formation.

Sewing tubular vascular material onto the graft avoids glutaraldehyde, simplifying manufacture and supporting biocompatibility.

Variable cross-section proximal and distal stops prevent axial displacement and rotation of the prosthetic valve within the endoprosthesis channel.

A valved conduit uses adhesive bonding to attach leaflets to the exterior surface, simplifying manufacturing and reducing mechanical coupling.

Cross-linkable materials bond directly to implantable frames, eliminating adhesive degradation and immune responses for durable biocompatibility.

An adjustable intermediate looped portion supports a valve within a vascular device, accommodating varying vessel diameters to treat venous valve insufficiency.

Segmented reinforcement members decouple direct attachment, reducing stress on the frame while strengthening the valve.

A PVA hydrogel prosthetic venous valve reduces shear rates through viscoelastic properties.

A monocusp prosthetic valve uses a hinged flap to prevent reflux while avoiding thrombosis from stagnant blood.

Vascular valves use fiber orientation and crosslinking to minimize retraction of remodelable covering materials during tissue integration.

A prosthetic valve uses isolated granulation tissue grown via a cusp-forming device to replace damaged native valves.

Slanted semi-rigid and flexible leaflets minimize stagnation zones, reducing thrombosis risk in venous insufficiency treatments.

Leaflet slits define a free portion enabling antegrade flow and restricting retrograde flow, addressing thrombus formation in venous valve insufficiency.

Segmented U-shaped struts distribute stress to maintain vessel patency while reducing trauma to the vessel wall.

U-shaped support frames maintain vessel patency while minimizing trauma to the vein wall through dynamic compression.

Cutting chordae tendineae induces reverse flow velocity and pressure gradient, simulating human venous hemodynamics for accurate intraluminal device evaluation.

Laser ablation reduces manual processing time and scrap rates while thinning bovine jugular vein tissue for percutaneous heart valves.

Segmented prosthetic valve members join at commissure points to create customizable leaflets, reducing perivalvular leakage and surgical complexity.

A prosthetic valve manages retrograde fluid flow through controlled apertures and remodelable materials to support tissue integration.

A transcatheter valve prosthesis features a tubular stent with a triangular intermediate cross-section that conforms to native commissural points.