Stents TRIZ Cases

An inner sleeve projection retains the catheter protector during withdrawal, reducing manual handling and catheter damage risk.

A dual-channel loader sheath protects a crimped heart valve and tears predictably for controlled, minimally invasive deployment.

A monofilament and multifilament PET braid combines resilience, softness, and coverage while reducing layered sealing complexity.

This case uses skirt projections and attachment extensions to cover commissure gaps and improve prosthetic valve sealing.

Explore self-expanding stent frames with atrial and ventricular flares for percutaneous mitral anchoring without outflow tract obstruction.

Localized spiral openings tune cannula stiffness, preserving pushability while enabling flexible navigation through body vessels.

A sheath-mounted reconstraining member supports partial deployment, retraction, and accurate stent placement.

A knitted tubular scaffold with cutouts and polymeric covering manages radial deformation to support endoprosthesis durability.

Bent-strut markers show the frame circumference under fluoroscopy, supporting vessel conformance and accurate intravascular placement.

A self-expanding mitral valve uses flared annular contact and ventricular anchoring to limit migration during catheter delivery.

A self-expandable mitral stent uses differential expansion and hooks to secure placement and reduce paravalvular leakage.

Catheter-deployed mesh or wire devices conform to variable valve gaps, securing occlusion while limiting migration and clot complications.

This case shows how reconfigurable stent graft anchors maintain tissue engagement, then disengage along a removal path with minimal trauma.

A compact prosthetic valve uses venous access and releasable pin engagement for flexible navigation and controlled expansion.

Independent axial and commissure alignment actuators help position a collapsed valve precisely before balloon deployment.

A shape-memory circumferential endoanchor simplifies deployment and anchors an endograft without piercing the graft or aortic wall.

Intravascular imaging guides intramural crossing and true-lumen reentry, helping bypass chronic occlusions without open surgery.

This case shows how nested valve components and integrated sealing support a smaller crimped profile while preserving structural support.

A monolithic superelastic frame with polymer leaflets addresses large-catheter limits through biased-cell, low-profile deployment.

A two-stage 450–550°C and 210–290°C treatment improves nitinol wire modulus, hysteresis, and superelastic recovery.

Segmented scaffold sections balance a reduced delivery profile with radial support for stable cardiac assistance and blood-flow monitoring.

This case uses flexible ties and retention clips to secure stents within body lumens and maintain prolonged luminal patency.

The expanded stent moves through the vessel, applying radial force and inducing intima denudation. It can be removed after treatment.

A separable applicator and stent carrier enable independent steam sterilization, reducing delays for customized stent delivery.

Independent angled C-rings support anastomotic grafts, limiting toe flattening and buckling while preserving expandable blood-flow geometry.

A constrained implant, coaxial pusher, and engaging element support accurate prostatic urethra deployment while limiting tissue trauma.

Sensor feedback wirelessly controls induced-current nerve stimulation in an implanted stent, reducing operator and patient burden.

Radiopaque markers guide accurate graft fenestrations while reinforcement prevents fraying.

An expandable anchor and commissure support enable secure heart valve anchoring and sealing through catheter-based delivery.

A zig-zag collapsible frame and protective sleeve reduce crimped profile and leaflet damage during transcatheter delivery.

A V-shaped filament weave enables uniform compression and self-expansion, helping nasal sinus stents conform to irregular cavity shapes.

This case combines modular guide-wire, balloon, and catheter control with magnetic coupling to limit contamination during surgery.

A collapsible helical-filament scaffold expands for lumen support, delivers therapeutic agents, and retracts after treatment.

Flow pathways relieve pulsatile pressure during partial expansion, supporting accurate stent-graft placement and downstream perfusion.

Anti-migration members increase surface friction, while preferential separation limits tissue ingrowth and supports easier stent removal.

A tapered endcap with rotation hub, valve, and lumen enables secure, controlled delivery through a biliary access device.

Physiologic sensors placed in low-artifact shunt locations enable timely pressure regulation with less tissue overgrowth and intervention.

A tapered channel and axial base crimp an expandable heart valve in its protective container, reducing handling damage before implantation.

Rotational spun PTFE layers tune porosity to anchor prostheses through tissue ingrowth and support endothelial attachment.

This case uses an outer-tube lock-release connector to secure crimped implants, enable controlled deployment, and allow partial retrieval.

Slack and directional stiffness help the outer skirt buckle outward, improving sealing while preserving uniform crimping.

A rotating iris shifts hinged arms to compress and load stents, simplifying the mechanism and reducing manufacturing complexity.

A collapsible covered stent uses adjustable flow restriction in hepatic veins or the inferior vena cava to reduce venous congestion.

A variable-diameter loader and retrieval path supports protected valve crimping and removal through the delivery sheath.

Integrated stent sensors use separate conductive antennas to wirelessly track pressure differences and support earlier shunt monitoring.

A catheter with separate inflow and outflow capture devices controls prosthetic valve expansion for larger anatomical sites.

This case uses folded leaflet-edge sutures at stent commissures to distribute stress and improve prosthetic valve durability.

A three-catheter cerebral system combines aspiration thrombectomy and stenting to treat clots and stenosis without device exchanges.

A laser-cut rivet shunt uses variable cell sizes to form flared ends, foreshorten, and secure tissue around an opening.

Interconnected segments, spine wires, and rotating connectors balance catheter stiffness with multi-plane bending for valve delivery.