Stents TRIZ Cases

Camming assembly and lockout lugs verify cartridge compatibility before allowing firing member advancement, resolving safety-complexity trade-offs.

Segmented catheter shaft uses biaxial orientation to balance rupture pressure and flexibility, reducing vessel trauma during medical procedures.

Biodegradable microneedles anchor ECM constructs in tissue, eliminating permanent foreign body irritation and vascular thrombosis risks.

Closeable neck bridge opening enables embolic material insertion and subsequent closure to prevent escape from irregular aneurysm sacs.

Radially collapsible distal catheter portion yields to extended wire profile during retraction.

A stent and membrane device delivers therapeutic substances to the aortic wall.

A compressible connective tissue graft platform reduces diameter for insertion and expands within a bone aperture to generate high interface forces.

A super-elastic intravascular cuff curls back to trap native valve leaflets and create a defined lumen for prosthetic device placement.

A coronary stent uses crystalline rapamycin dispersed in a bioabsorbable polymer to achieve controlled drug elution.

A medical catheter with an expandable balloon and integrated filter assembly captures dislodged embolic particles, preventing downstream vessel occlusion.

Expandable wings pivot to create scaffolding that prevents coil herniation at bifurcations while maintaining unobstructed blood flow through efferent vessels.

Piezoelectric implantable device converts varying shear force from pulsatile tissue into voltage, eliminating battery replacement needs.

Vapor deposition forms a bio-corrodible iron alloy stent on a graft to ensure predictable absorption and minimize residual degradation products.

Segmented expandable member uses dense wire zones to retain coils and sparse zones for blood flow.

External mesh scaffold promotes tissue ingrowth to resolve hydrophobicity preventing cell recruitment and minimize endoleak risks.

A flexible polymeric inner sleeve collapses under gastric pressure to form a one-way valve within the stent assembly.

Heat-set tubular stent grafts expand to anchor within lumens, preventing aneurysm growth while minimizing vascular trauma during minimally invasive procedures.

A delivery system handle uses a spring assembly to engage a threaded slide shaft for controlled sheath retraction.

Creating folds in distal sleeves stabilizes transition sections, resolving structural integrity trade-offs during refolding.

Segmented anchors and an intermediary sealing element enable reliable anchoring against irregular cardiac rings without balloon trauma.

A disposable expandable stent graft restores blood flow and prevents clot formation during emergency vascular repair.

Nested bifurcated delivery system prevents premature expansion by holding expandable implant within constrained sheath structure.

Dual constraining members apply axial force to control stent expansion, enabling precise placement and repositioning within the esophagus.

Introducer device retains a branched stent graft and guides an indwelling catheter with a guide wire through the vessel lumen.

Segmenting the balloon into distinct layers resolves the contradiction between burst strength and trackability while preventing plasticizer migration.

An expandable tip prevents aortic arch damage by maintaining a larger diameter than the sheath during navigation.

Segmented control knobs manage vascular implant deployment states through a dual actuating mechanism, resolving complexity-ease of operation trade-offs.

Variable helical slot geometry allows axial force to modulate flexibility while maintaining structural rigidity during navigation through tortuous body lumens.

Dynamic balloon inflation correlates fluid volume with target pressure, resolving thermal load variability across diverse patient anatomies.

A medical implant uses a holding element with connected second struts forming a tip that projects into the cell to provide radial force.

Rotatable trigger and ratchet assembly enable precise positioning of fenestrated stent grafts without occluding branch vessels.

Segmented cell structures reduce radial force per millimeter of expansion, enabling navigation through tortuous anatomy while maintaining treatment efficacy.

An ablation catheter with a balloon integrates in-balloon and front portion electrodes to perform spot ablation without device exchange.

Markers on the delivery catheter predict foreshortened landing location to resolve placement uncertainty during self-expanding stent deployment.

Guide member ensures uniform pressure distribution and prevents misalignment during indwelling.

Axial stent segments feature interlocking joints that decouple during radial expansion to enable longitudinal flexibility.