Stents TRIZ Cases

Segmented catheters use nitinol reinforcement to resist kinking while maintaining directional control.

Alternating thick and thin struts in a braided stent increase radial strength while allowing compression into smaller delivery profiles.

An expandable member with spring-biased fingers temporarily reshapes irregular blood vessels to enable accurate diameter measurement via imaging.

Structural loops and eyelets anchor the graft member to prevent migration, resolving connection stability issues in prosthetic valves.

Sequential chamber inflation via non-monotonic pressure-volume curves controls propulsion speed and reduces friction damage to tissue walls.

A cranial anchor and channel member maintain surgical access while an inflated balloon stabilizes the cavity and controls bleeding without assistants.

Catheter-based stents restore blood flow in the ophthalmic artery to enhance oxygen delivery to the eye.

Partial inflation and external force retain therapeutic agents on balloons during folding, preventing damage or loss that compromises drug delivery efficacy.

Primary and secondary expandable areas conform to implant profiles, resolving smoothness issues during retraction.

Pre-bent prongs on the expandable stent engage surrounding tissue to anchor the prosthetic heart valve securely within the body.

Longitudinally oriented bendable struts enable accurate positioning at the pulmonary vein antrum, reducing recurrence rates from transport difficulties.

S-shaped crosslink connectors resolve the trade-off between radial strength and longitudinal stability in balloon-expanded stents.

Embedded optical shape sensors guide a robotic controller for precise endograft placement, reducing radiation exposure and contrast dye usage.

A retractable sheath and inner catheter sleeve engage a self-expanding stent to prevent proximal movement during deployment.

A prosthetic valve support system uses radially-expansive force to couple a replacement valve within a delivery catheter for transluminal implantation.

Nested intravascular graft with PPCN carrier shields islets from oxidative stress and inflammatory responses while enabling nutrient exchange.

Inflatable balloon on dialysis catheter surface dislodges adherent tissues, preventing central vein stenosis and thrombus formation.

Heating and pressurizing the balloon during crimping increases retention force, preventing fracture of brittle polymer scaffolds.

An annular filler with expandable ribs fills gaps between the valve and native tissue to mitigate paravalvular leaks.

A biodegradable nasal splint stabilizes the septum while eluting therapeutic agents directly into the nasal passage.

A medical device handle housing manages conduit lengths through a rotatable separation element that forms reserve loops.

A prosthetic mitral annuloplasty ring uses a threaded adjustment member to resize the device geometry during implantation.

Interlocking bending points in a Z-shaped braided stent allow axial compression without radial change, reducing organ damage risk.

A hydraulic delivery capsule actuates to deploy prosthetic heart valves, preventing uncontrolled axial jumping and migration during mitral valve replacement.

Opposing screws in a triple-layer tube assembly offset axial retraction forces for precise intravascular stent implantation.

Alternating round and rectangular wires in a braided stent increase vessel wall area coverage while allowing low crimped diameters for delivery.

Fenestrated endoluminal prostheses maintain branch vessel blood flow while reducing procedural invasiveness and mortality risks.

Inflated docking balloon prevents capsule edge engagement with stent graft during introducer withdrawal.

Segmented catheters navigate complex cardiac anatomy to place stent grafts precisely, avoiding dissection extension risks.

A balloon catheter creates a dissection plane to guide a guidewire back into the true lumen.

A retrieval catheter features a distensible tapered tip with an internal distender that expands the orifice for device capture.

Segmented helical struts improve emboli resistance and tissue coverage while maintaining structural integrity.

Sequentially removable members in the handle enforce a fixed activation order, preventing practitioner errors during stent graft deployment.

A flexible light-transmitting vascular stent uses hardenable channels filled with liquid photocuring material to provide radial support.

A fluid-tight shipping container seals a pre-loaded bioprosthetic valve onto a delivery catheter, preventing contamination and simplifying the loading process.

A porous fibrous implant network guides host cell adhesion to synthesize elastin, restoring vascular compliance and preventing neointimal hyperplasia.

A bifurcated stent graft incorporates a helical side arm to expand the lumen at the bifurcation for easier deployment.

A stretchable material comprising a reinforcing polymer with a porous matrix imbibed with a sealing material to form a surface coating.

Longitudinal strips on the distal outer sheath radially expand to lower deployment force, enabling easier repositioning of self-expanding stents.

Pivot joints allow retrieval of malpositioned prosthetic valves to prevent complications.

A stabilization system secures a direct aortic transcatheter valve delivery handle using an adjustable cradle and flexible position clamp.

Oriented distal loops prevent coil migration into circulation while maintaining vessel flexibility.

Surface modifications on luminal prostheses improve polymer coating adhesion, preventing cracking and smearing during mechanical deformation.

Segmented flexible mold cores prevent thermal deformation during injection molding, ensuring precise stent geometry.

A stent housing tube features a polygonal prism inner surface to minimize contact area with the compressed stent.

An inward helical fin in a vascular access graft creates spiral blood flow, reducing turbulence and internal scarring while preserving self-sealing integrity.

An extendable guide rail enables single-stroke deployment of lengthy self-expanding stents, reducing tissue trauma from axial stress.

Segmented draw lines pass through release loops to detach stents while minimizing stress and inadvertent motion during transcatheter procedures.

A bipolar electrode probe delivers radiofrequency energy to constrict hollow anatomical structures through thermal coagulation.