Stents TRIZ Cases

An elastically deformable lip pocket receives the endoprosthesis, reducing snagging risks during smooth retraction.

An implanted monitoring apparatus measures pressure gradients across a prosthetic heart valve to detect early flow disturbances.

A knitted endoprosthesis uses shifting anti-migration loops to anchor within a body lumen.

A composite wire uses a powder core to enhance radiopacity without compromising mechanical performance or electrochemical behavior.

An integrated stent graft delivery system reduces manufacturing complexity by merging separate components into a single unitary endoseal structure.

A vapor deposition process creates bioresorbable coatings by depositing anodic and cathodic materials to form a galvanic couple.

A sleeve member made of electroactive polymer slides over a primary guidewire to extend reach into fine vasculature and bifurcations.

Differentiated web widths in a stent lattice structure enable uniform radial expansion, reducing vessel wall irritation and blood clot formation risks.

Dynamic stent grafts adjust diameter and length after implantation to resolve sealing reliability issues under high blood flow pressure.

Segmented support rings minimize cross-section while a proximal line attachment simplifies engagement mechanisms, reducing procedural time.

Nested branch endoprostheses reinforce stent-to-stent junctions, preventing fatigue failure at bifurcation sites.

Variable elasticity and torsional moments enable a medical device to stiffen at target locations, preventing tissue necrosis from perpetual radial pressure.

Anchored ECM shield protects vessel walls from obstruction while enabling targeted repair.

Segmented delivery catheters deploy fluidized material to form variable-length stents, eliminating fixed-length constraints.

Heating polymeric scaffolds to the glass transition temperature enables uniform crimping and expansion while preventing structural failure during deployment.

Discrete anchoring elements prevent device migration while maintaining blood flow through vessel walls, avoiding stress concentrations.

Nested segmented catheters steer via radial access to reach contralateral vessels, reducing tissue injury risks.

A woven nitinol stent uses an inner flow diverting layer to induce thrombosis, resolving positioning stability issues during deployment.

Dynamic adjustment of diameter and orientation accommodates irregular aortic arch anatomy, preventing device migration under high blood flow.

Concentric sliding balloon envelopes withstand 60 bar pressure while maintaining flexibility and lubricity.

Nested ratchet handle drive retracts sheath and pusher slides, reducing mechanical load during precise stent graft deployment.

Parylene vapor deposition coats additive manufactured molds to prevent material migration and ensure high surface quality during silicone vulcanization.

Grooved pushwire and slotted sleeve allow recapture of self-expanding stents, resolving placement accuracy versus radial strength trade-offs.

A single catheter integrates intravascular imaging and flow sensing for precise heart valve delivery.

An intravascular pulmonary artery implant replaces invasive surgical banding with a self-expanding frame and adjustable balloon to control blood flow.

Discrete stent rings coupled to a polymeric tube maintain constant length during radial expansion.

A shape-memory filament forms a flow restrictor at the aneurysm neck, preventing coil herniation and migration risks without obstructing main lumen flow.

Segmented elastomeric membrane seals repeated needle punctures in hemodialysis grafts, reducing mechanical trauma and infection risk.

A ureteral stent employs a sponge retaining structure that absorbs moisture to expand, preventing movement and reducing trigone irritation.

Variable diameter wire weaving allows axial compression for femoral delivery while maintaining radial support to treat aortic dissection.

Segmented balloon folds guide therapeutic agents into precise reservoirs, resolving coating inconsistency and reducing systemic drug exposure.

A conical stent snare hooks urinary tract stents using a dedicated channel for guide wire navigation.

Applying coatings to flat stent panels before assembly resolves uniformity issues and allows differential treatment of luminal and vessel wall sides.

A low-volume intracavity balloon catheter uses a reinforced anterior surface with radioprotective coating to protect rectal mucosa from radiation exposure.

Woven wires of different diameters create axial extensibility, enabling femoral delivery and strong radial support at aortic dissection sites.

Segmented housing portions in a catheter handle manipulate stent components sequentially, preventing incorrect positioning during implantation.

A vented needle introduces curable biomaterial into the intradiscal space to ensure complete filling.

Bioabsorbable distal heads eliminate tissue corrosion risks while segmented mesh lowers sheath insertion resistance.

A composite stent structure with swaged lumens delivers active substances through controlled openings.

Anti-CD47 and anti-MHC Class I agents target distinct immune pathways to enhance macrophage phagocytosis of cancer cells.

A nickel-titanium stent surface structure featuring a heat-treated transition metal layer that enhances fatigue resistance and bioadhesion.

Positioning a thermocouple sensor along the shaft reduces balloon contraction diameter and stabilizes surface temperature control accuracy.

Nested support members prevent stent kinking during navigation through tortuous vasculature.

An asymmetric multi-layered drug releasing controlled coating segments release profiles to prevent restenosis while minimizing vascular irritation.

A vascular prosthesis deployment system uses independent inner and outer sheaths to expand vessel segments for rapid repair.

A heart valve prosthesis holder integrates an angular reference member and locking mechanism for precise positioning.

Radially deforming polymer tubes aligns molecular chains to boost radial strength, reducing recoil and maintaining vascular patency.

A segmented ostial stent positioner uses a distal expandable cylinder to align the device within an artery.

A branchable stent graft uses segmented access regions to align with branch arteries during deployment.