Stents TRIZ Cases

A novel molybdenum and rhenium metal alloy enhances stent radial strength and flexibility for medical devices.

Offset connectors deflect to allow axial length changes without altering the deployed diameter of the stent.

Radial constriction wires maintain fenestration alignment with arterial branches to prevent endoleaks during aortic aneurysm repair.

A covered endovascular stent-graft uses polyvinylidene fluoride resin membranes to model vascular shapes and cover the skeleton.

Angularly offset prosthetic valve frames resolve the contradiction between compressed delivery profiles and reliable securing capability.

A vascular stent uses a sandwich structure to securely attach an inner mesh between two stent layers.

Annealed Fe/Pt particles generate magnetic fields to capture magnetically labeled cells, preventing restenosis and thrombosis.

Braided shape-memory support structure traps emboli and prevents paravalvular leakage without rigid stents.

An electrospun fiber matrix conditions arterial vein grafts to prevent intimal hyperplasia and reduce occlusion rates.

Vacuum distillation purifies magnesium starting material to resolve rapid degradation of biocorrodible implants while maintaining mechanical strength.

A medical elongated body uses a dual-tube distal structure to channel fluid through an internal space for reliable discharge.

A conductive polymer electrode modulates therapeutic agent release through electrochemical swelling and shrinking.

Positioning and retaining arches prevent longitudinal displacement of the prosthesis during heart motion.

A bifurcated catheter uses a dedicated narrow lumen to guide a stabilization wire through the femoral and radial access points.

A porous medical device delivers cell suspensions to tissue defects via diffusion through a micro-perforated wall.

A deformable restraint ring increases the insertion passage diameter by 20% to secure implants in non-perpendicular orientations, preventing fluid leakage.

A stent graft with a self-expanding annular mesh top stent transitions to a bulbous shape upon deployment.

Offset connecting elements enable a stent to adopt three-dimensional curvature under load, reducing stress concentration and promoting swirling blood flow.

A unitary bifurcated endoluminal graft forms integral legs from a single tube to simplify vascular deployment.

Flexible side branches and guiding elements align stent modules precisely, reducing operation time and radiation exposure.

An expandable distal tip forms a funnel to capture occlusive clots during retrieval procedures.

Segmented self-expanding stent elements deploy independently to minimize friction against vessel walls.

Segmented endobypass prosthesis with integral stents establishes arterial patency, preventing endoleaks while enabling future anastomosis access.

A wedge wire protects the branch vessel from damage during main stent expansion, reducing renarrowing risk without a second balloon.

Automated C-arm rotation along calculated orbits replaces manual operation, reducing examination time while verifying stent placement accuracy.

Nested braided device with anchor elements straightens compressed vessels, enabling minimally invasive treatment of neurovascular conditions.

Surface-mounted cutting elements disrupt hardened plaque to enable targeted bioactive delivery and reduce restenosis risk.

A nested sealing canopy and stent-in-stent design reduce perivalvular leaking in the mitral annulus.

Segmented shape memory alloy flaps engage implant surfaces to maintain constant radial stress, reducing deployment force and preventing proximal movement.

Integrates a steerable guide wire into a balloon catheter to eliminate separate wire placement and enable direct stenting in tortuous arteries.

A double-balloon catheter uses an inner non-compliant balloon to expand medical devices within body lumens.

Segmented plaque tacks secure dissected plaque against the vessel wall, reducing recurrent stenosis and stent fracture risks in mobile arteries.

A stent delivery system uses a marked sheath to position the implant precisely.

Laser-cut wall openings in a tubular body create radial loops that adapt to irregular vessel shapes while maintaining dimensional stability.

Corroding peripheral weld joints separates the implant while maintaining column strength during delivery.

An expandable valve repair apparatus uses independent support diameters to secure a bioprosthetic graft for blood flow restoration.

A vascular device with a nested secondary body extends to treat distal aorta defects.

Hydraulic pressure drives a guidewire piston to clear chronic total occlusions, enabling secondary device exchange.

Annealing fibrous tubular implants relieves internal stresses and prevents buckling during crimping onto balloon catheters.

External leaflet bonding eliminates mechanical coupling in valved conduit prostheses, preventing fatigue failure at attachment points.

A retrievable atrial septal shunt regulates chamber pressure via a flexible membrane structure.

Blending PGS prepolymer with a carrier polymer allows stable fiber formation, followed by thermal cross-linking to remove the carrier and form pure scaffolds.

Self-flaring barbs on a nitinol stent ring provide secure anchoring above renal arteries, preventing endoleaks in abdominal aortic aneurysm repair.

A catheter balloon blends rigid nylon with flexible polyether block amide to balance rupture strength with trackability through tortuous vasculature.

Segmented docking stations distribute pressure over larger surface areas, enabling secure implantation of smaller valves in enlarged native vessels.

Nested spiral inner balloon traps debris while outer sheath maintains blood flow continuity.

Magnetic sensing replaces X-ray radiation to track catheter position, eliminating patient exposure while maintaining real-time placement accuracy.

A wire weave retrieval end compresses captured endovascular devices using radial force generated by linear pulling.

Computer method calculates flexible stent porosity using shape change functions to resolve measurement precision issues in deformed configurations.