Stents TRIZ Cases

Modified polylactide polymers incorporate biocompatible functional groups to enable therapeutic agent conjugation.

Vacuum bonding joins nitinol layers with aluminum intermediaries, preventing oxidation and eliminating brittleness in 3D thin-film devices.

Fitted pipes on stent wires create stable X-ray markers, eliminating costly gold plating and separation risks.

A deployment assist mechanism applies retraction force to reduce manual effort during prosthesis delivery.

Segmented branched prosthesis reduces cardiopulmonary bypass time by parallelizing aortic arch vessel reconnection.

A catheter assembly constrains an expandable implant in a collapsed configuration for delivery.

Segmented stent segments reduce contact area to prevent intraocular pressure spikes during retinal reattachment.

Axial ports channel tears into the internal lumen, preventing restrictive external flow and granulation obstruction.

A rigid T-shaped junction maintains fixed orientation of inflatable toroidal elements, resisting deflection forces during navigation through tortuous vessels.

A segmented stent uses a rigid bendable second segment to maintain lumen cross-sectional area while an expandable first segment anchors in the body.

A resilient wider-than-neck stent and flexible sac-filling net bridge the aneurysm neck and conform to irregular walls.

Composite embolic coils resist stretching forces while maintaining flexibility, preventing elongation and ensuring precise aneurysm occlusion.

Dynamic deployment of a sinusoidal wire stent using a spirally twisted balloon resolves flexibility and radial strength trade-offs.

A mirror and magnifying glass enable clear visualization of catheter assembly connection points within a liquid solution.

Staged crimping and compliant blades prevent cracks in brittle polymer scaffolds, raising usable yield from zero to eighty percent.

External vascular support shapes vein-artery junctions to eliminate turbulence and prevent neointimal hyperplasia.

A pointed trocar tip and balloon PEG kit reduce stomach wall injury risk during artificial entrance creation.

A fibrin-coated nitinol stent prevents thrombosis and eliminates systemic anticoagulant therapy.

Segmented stents use strain-concentrating bridges that yield under extreme axial loads to prevent vessel prolapse and maintain patency.

Vascular prosthesis features an antimicrobially active layer on reinforced outer surfaces to prevent pathogen colonization.

Inner member transitions from longer to shorter length upon deployment, enabling proper positioning in confined anatomical spaces.

A fenestrated prosthesis uses a multi-layer fabric liner to maintain blood flow during implantation and seal after deployment.

A stent-based cardiac pressure monitor transmits in vivo arterial data wirelessly using an integral antenna.

A constraining sleeve with a releasable coupling member manages the collapsed profile of an expandable stent graft during vascular delivery.

Flexible arms on a sheathing aid guide a braided anchor member into an outer sheath, reducing manual manipulation during percutaneous heart valve deployment.

A gastrointestinal tube featuring a detention-proof lumen and expandable expander to manage fluid flow within the esophagus.

A tissue anchor delivery device deploys anchors through a catheter shaft, reducing morbidity and mortality risks associated with open-heart surgery.

A tapered funnel assembly and loading pins crimp self-expanding scaffolds onto delivery catheters.

Segmented stent and valve frame components enable catheter-based implantation, reducing surgical morbidity while maintaining reliable valve function.

Tapered indented stent pores filter white blood cells from blood flow, preventing vessel wall cell migration onto the filtering structure.

A catheter sheath seam uses a flexible thread passing through a rigid member to stitch overlapped material edges.

Segmented stent design uses a central coil for torsional flexibility and outer lattices for radial support, preventing kinking in knee arteries.

Segmented helical strands minimize elongation and kinking, ensuring complete stent deployment without increasing push forces.

Raised portions create an annular channel delivering substances to improve fixation stability and prevent migration in non-round vessels.

Latently cross-linkable polymer materials provide structural strength and radiopacity for implant devices.

Expandable coil coupling members align branch stents within fenestrated grafts, enabling renal artery access while maintaining structural integrity.

Dual pull elements split and remove the sheath, reducing friction forces that risk endoprosthesis displacement in narrow vessels.

Self-expanding shape memory bulbs on a textile structure capture clots in tortuous vessels without balloon inflation or separate embolic protection.

A sine wave nitinol anastomosis stent expands radially to accommodate vessel diameters.

A hybrid stent graft integrates a bypass tube and self-expanding stents to maintain blood flow through the thoracic arch.

Multi-stage radial expansion of PLLA tubes creates thin strut stents that resolve the trade-off between minimal arterial injury and adequate radial strength.

A catheter-based cleaning assembly uses a deployable rotating brush to extract occluding material from stent lumens.

A medical device frame changes compliance through controlled material fracture or bioabsorption to adapt to vessel geometry.

Helical wire connectors form a bypass conduit in collateral vessels to restore blood flow without open surgery.

A knitted tubular stent supports a vein segment to mimic arterial compliance, preventing bulging and reducing intimal hyperplasia.

Embedded wireless sensors measure pressure and strain within implantable heart valves to transmit functional status data externally.

External lock parts on the flexible tube prevent migration into the aortic arch during folding, reducing surgical time and patient burden.