Stents TRIZ Cases

A stent graft system uses a flexible outer mesh layer to fill gaps between the cover film and artery wall.

Magnetic stent coatings move radially to clear bile and debris, preventing occlusion.

Linear guides constrain wedge-shaped dies to maintain constant gaps during compression, resolving manufacturing precision issues at small diameters.

Concentric screw threads in the rotator component drive sequential release clamp engagement, preventing operator errors during stent graft deployment.

A self-expanding scaffold compresses and macerates thrombi to restore blood flow.

Composite balloon cover with overlapping portions and apex apertures increases rated burst pressure while maintaining low delivery profile.

A cryoablation catheter uses a refrigerant dispersion member to evenly distribute cryofluid across the expansion chamber interior.

Plasma-activated coating covalently binds fibrinolytic enzymes to reduce thrombogenicity on vascular devices.

Apertures in the spinal implant enable fixation element toggling to accommodate vertebral subsidence and prevent loosening.

Pre-installed receiver rows allow surgeons to cinch a vascular graft with a suture, avoiding manual cutting that weakens material integrity.

Collapsible anchor with biodegradable constraints maintains protrusions in a constrained state until degradation allows expansion.

A stent graft introducer uses a pre-curved auxiliary catheter to transition between straightened and curved configurations.

Inverting the loading sequence pushes the stent through the sheath, reducing friction forces during large diameter stent placement.

A conductive biopolymer implant embeds metal nanowires to direct electrical stimulation across tissue.

A bioresorbable multi-element stent provides high initial radial support while gradually decreasing rigidity as the polymer absorbs.

Tissue prolapse through stent open spaces anchors the device, preventing branch vessel obstruction and maintaining fluid communication.

Segmented conformance struts adapt to curved vessels and prevent graft infolding, reducing endoleak risks while maintaining a compact delivery profile.

Segmenting the stent into repeating V-cells with specific hinges resolves strength-flexibility trade-offs while preventing hematoma from unconnected corners.

Segmented wire base body enables reversible shape change for secure anchoring while avoiding blood flow obstruction.

Replacing monofilament wires with segmented multi-filament microcables reduces stress on adjacent bone and tissue during sternotomy closure.

Segmented stent design with inward helical protrusions reduces acid reflux by blocking backflow while maintaining vessel patency.

A temporary nitinol stent embeds drug in structural nodes for stable release and includes hooks for retrieval.

Segmenting the outer sheath into proximal and distal capsules prevents bending during loading, enabling accurate transcatheter valve placement.

Segmented delivery cartridge maintains device hydration and sterility, enabling on-site loading without removing the outer sheath.

Proximal sheath retraction via an intermediate tubular member prevents unintended distal stent expansion during deployment.

An implantable aortic flow restriction device alters hemodynamics to enhance renal perfusion and promote diuresis.

A stent delivery system uses a Geneva gear winding mechanism to restrict traction wire movement.

A tubular prosthesis cuff conforms to the sino-tubular junction to bias pressure onto the aortic wall, securing fixation in the ascending aorta.

An expandable stent holds heart tissue away from a pump inlet, preventing suction conditions that damage tissue and disrupt blood flow.

Segmented catheter with shaped balloon stabilizes pyloric antrum position, enabling precise calibration of the gastric sleeve resection line.

A composite woven fabric combines ultra-high molecular weight polyethylene and polyethylene terephthalate strands to create a durable textile structure.

Orienting polymer chains via radial expansion reduces strut fractures and recoil, maintaining vascular lumen patency.

A sheath splitter assembly with a circumferential sealing surface stretches the delivery sheath to form a hemostatic seal.

A tapered pusher sheath reduces outer diameter at the distal end to increase flexibility, preventing kinking during navigation through tortuous vessel paths.

A self-expanding stent anchors a cardiac electrode within a coronary vein using frictional engagement.

Segmenting the stent into distinct functional portions resolves the contradiction between high radial force requirements and soft tissue compliance.

A modular multibranch stent assembly deploys a main body with bifurcated contra limbs to maintain blood flow in critical arteries.

A loading device uses nested sheaths and an actuation rod to radially collapse expandable medical implants for minimally invasive delivery.

Outer skirt with circumferential creases and alternating projections enhances radial expansion and sealing contact on prosthetic heart valve frames.

Apparatus with surface asperities initiates native tissue injury to promote cell proliferation and ingrowth around implantable medical devices.

An external flow path on a catheter tube directs urine through drainage eyes into the lumen, preventing encrustation buildup that blocks internal channels.

Segmented sleeve members and force-transmitting means allow step-wise deployment of heart valve stents, resolving incorrect positioning risks.

Partial unstitching at the base portion prevents vascular narrowing and occlusion while maintaining structural support during deployment.

Nested balloon design enables percutaneous removal without reopening the wound, reducing infection risk and tissue damage during extraction.

Nested core wire and friction bumps enable precise flow diverter expansion in tortuous vessels, reducing vessel damage risk.

A pre-set spiraled coil occlusion device reduces procedure time and cost by eliminating intra-procedural coil manipulation.

A dual stent assembly uses a flared side branch and orifice main stent to align at bifurcation sites.

A segmented delivery sheath uses controlled cold drawing to reduce wall thickness and minimize friction during stent deployment.

An automatic shut-off valve closes the shunt during contrast injection, preventing embolic debris from entering cerebral vasculature.