Stents TRIZ Cases

Segmented stent system with linked deflection components diverts emboli away from cerebral arteries while maintaining blood flow resistance.

Apical bores isolate trigger wires within stent-grafts, preventing vertex crimping and barb entanglement during delivery.

A reconfigurable multi-lumen catheter delivers main and branch stent-grafts through a single integrated device.

Embedding reinforcement material into tissue walls prevents device migration and reduces surgical trauma.

An axial force adjustment assembly manages tension and compression in prosthetic heart valve delivery shafts.

Spirally wound imaging member on elastic supporting member resolves edge position determination accuracy issues during guide wire track establishment.

Temporary nitinol stent treats vasospasm via radial force, avoiding permanent implantation risks and complex anchoring mechanisms.

A drive cable actuates an endoluminal cutting mechanism to sever an elongate stent body, eliminating inaccurate fluoroscopic length assessments.

Steering lines rotate a connection mechanism relative to a fixing member, enabling precise circumferential adjustment of a prosthetic valve after deployment.

Movable microcells in a reconfigurable stent adapt to vessel walls, reducing trauma while maintaining patency.

Pivotable fenestrations rotate to match patient anatomy, resolving the conflict between sealing reliability and adaptability.

Interlocking warp knit strands form a cover body with defined release zones. Tensioning deployment lines unravels the knit structure for controlled expansion.

Expandable ring stent secures a leadless pacemaker at the SVC-RA junction, enabling atrial pacing while allowing retrieval via an external mechanism.

A modular endo-aortic device adjusts stent diameter via component translation to fit varying aortic arch anatomies.

A prosthetic valve system anchors in soft tissue using a support structure that engages native leaflets, preventing annulus dilation during implantation.

Nested expandable frame within a delivery catheter reinforces the esophageal sphincter to reduce reflux symptoms without invasive surgical trauma.

Interdigitating axial and lateral stent elements ensure precise alignment, reducing restenosis risk while maintaining vessel access.

Embedding sutures between PTFE layers resolves the contradiction between tensile strength and flexibility, preventing elongation during insertion.

Positioning arches insert into native leaflet pockets to prevent leakage and displacement during minimally invasive cardiac valve replacement.

Multi-layer tubes expand diametrically under axial force, eliminating necking and reducing tension during medical device removal.

A titanium oxide thin film coating on a gene delivery stent enables targeted drug and oligonucleotide adherence.

Slip joint connections prevent axial forces on non-elastomeric balloons, reducing transverse creasing and bowing during inflation cycles.

Merging adjacent fenestration tubes into a single larger tube facilitates guide wire insertion while maintaining blood flow and pressure in branch vessels.

Inner member extends beyond catheter tip to center valves, resolving placement precision and device complexity trade-offs.

A self-expanding embolic implant with a superelastic wire-frame and ePTFE membrane provides immediate parent artery occlusion.

Segmented bioabsorbable polymer layers containing extracellular matrix components enable controlled drug release while reducing vascular intrusion.

Varying strut lengths prevents peak clashes during bending while maintaining manufacturing simplicity.

A transcatheter neo-leaflet extends across the valve to coapt with native leaflets and prevent backflow.

Segmented occluder seals paravalvular leakage by anchoring within the valve structure, reducing migration risks without harming nearby anatomy.

Crossed inclined ridges on a double-walled stent body resist external forces and prevent displacement while a cover blocks lesion penetration.

A flexible sheath with an expandable frame transitions between collapsed and expanded states to create a secure medical access pathway.

A stent delivery system uses a suture and grasping loop to enable precise placement and retrieval of self-expanding implants.

An inclined distal surface and recessed proximal end on the stopper restrain longitudinal migration while allowing smooth deployment.

Self-expanding stents secure prosthetic valves in the annulus, resolving positioning precision challenges during percutaneous delivery.

Slots covering 60-75% of rod length balance drug loading capacity with stent strength, reducing fracture risk.

Concave abluminal and convex side surfaces on biodegradable stents enhance radial strength through solvent treatment shaping.

Segmented coatings with biodegradable elastomers prevent premature drug release while maintaining durability during stent deployment.

Nested hooks and UV-curable adhesive join components without increasing cross-sectional dimensions beyond 0.027 inch microcatheter limits.

Segmented graft sections with varying pliability improve alignment with curved vessel profiles while maintaining structural integrity to reduce leakage risks.

Coextruded multilayer balloon with distinct radial ratios enhances burst pressure while reducing wall thickness.

Electro-grafted primer anchors biodegradable polymer to stent surface, preventing delamination and enabling complete drug release.

A dual-layer balloon catheter expands stents using an elastic outer layer and inelastic inner core.

A foldable polylactic acid stent coated with biological amniotic membrane expands to support body cavities.

Asymmetric stent film prevents inward folding, maintaining bile flow while blocking duodenal reflux.

A percutaneous temporary valve system uses an inverting sheath to deploy a radially expanded canopy for unidirectional blood flow.

Discrete shaping members enable a prosthetic valve to adapt to dynamic vein geometry, reducing inflammation and thrombosis risks.

Fluid-absorbable composition swells in channels to provide radial strength, resolving the trade-off between low delivery profile and secure anchoring.

Rotary reel pulls outer sheath over hypotube to prevent watermelon-seed effect during deployment.

Rotatable coupling assembly engages stents via projections on plates, eliminating distortion from multiple pad diameters.