Stents TRIZ Cases

Foreshortened woven braids create double-walled flanges that secure tissue layers while minimizing necrosis risk.

Segmented sleeves with a slitter reduce friction forces during deployment, preventing binding and premature release of longer stents.

A pre-shaped intracardiac device anchors to the native mitral valve annulus while restricting leaflet movement.

A nested delivery catheter uses ultrasound transducers to image blood vessels and adjust device orientation in real time.

Interlocking rhombic wire patterns prevent longitudinal contraction while maximizing circumferential elasticity in stenotic passages.

A coronary stent maintains a smooth outer surface in its expanded configuration to minimize blood-flow turbulence.

A binding thread and control wire enable free rotation of the stent graft, resolving alignment challenges with renal arteries.

Electromagnetic coils track prosthesis markers to generate real-time 3D vessel models, eliminating ionizing radiation exposure during deployment.

A helical hollow strand stent uses elongated members to permit fluid drainage along the entire lumen length.

Deforming the marker gap closes the passageway to lock the component onto the strut, ensuring precise visibility during vascular procedures.

Varying jaw thickness provides spring properties that reduce operating force during stent removal.

A sheath assembly with guide and follower components prevents relative rotation between the pusher member and inner catheter during deployment.

A hydrogel-coated stent graft uses swelling to gradually close through holes upon blood contact.

Helically wound stent wires laminated within a graft member create an integral bifurcated structure that reduces leakage areas and improves radial strength.

Pre-loaded guidewires advance through main graft bodies to secure branch vessels, eliminating open surgery mortality risks.

Nested hemostasis valve employs a self-locking ratchet grip to prevent extracorporeal blood flow during delivery device changes.

Twisted filament stent wire distributes stress across multiple planes to enhance radial force.

Discrete intravascular tacks hold loose plaque against the vessel wall, reducing foreign material contact and minimizing restenosis risk.

Longitudinally offset scoring elements reduce stress concentration to prevent tear propagation while maintaining cutting force during angioplasty.

Thin conductive foil electrodes bonded to catheters with double-sided adhesive tape reduce assembly complexity and patient injury risk.

Mechanical support structure anchors in cancellous bone via filler material bores, avoiding pharmaceutical side effects.

A motor-driven coiled strip adjusts device diameter via sliding layers, avoiding balloon-induced occlusion and enabling precise shape formation.

Segmented brake hose lumens separate the pull cable from the inner shaft, preventing winding during retraction.

Distinct elastic modulus regions enable a single balloon to adapt to varying lumen sizes, eliminating the need for multiple inventory sizes.

Porous hollow fiber tubules filter bacteria and salt crystals from urine, preventing encrustation blockage in the ureter.

Segmented electroformed structures on balloon catheters resolve the trade-off between wall strength and crossability through lesions.

A variable zone stent uses distinct metal-to-vessel ratios to anchor, seal, and perfuse branch vessels in a single deployment.

Low-temperature heat treatment of austenitic stainless steel guide wires increases tensile strength while preventing disconnection during twisting.

A sequential unlocking trigger mechanism prevents premature tether cutting during BPH implant delivery, ensuring safe and reliable operation.

Nested coaxial lattice structures reduce compressed diameter for small vessel delivery while maintaining aneurysm treatment reliability.

A double balloon isolation catheter segments the colon to enable precise localized contrast delivery.

Pinching the tubular wall with a seam creates an integrated branch, reducing manufacturing complexity.

A bifurcated stent-graft delivery device uses complementary curved catheter tips to form a unified bullet-shaped nose for precise vascular tracking.

A gastro-jejunal feeding tube integrates gastric, jejunal, and balloon lumens into a single compact structure.

Varying thickness regions in the structural member enable axial flexibility, allowing the device to conform to curved vessel walls.

A side-mounted holder with a constrictable loop manages the self-expanding frame of a prosthetic heart valve during minimally invasive implantation.

A sprung-loaded actuator winds a retraction strap to withdraw an introducer sheath without manual force.

A vascular graft with a helical compliance chamber forms a vane element under pressure to induce helical blood flow.

An oblique ramp in a multi-lumen catheter shaft guides guidewires through nested channels, reducing procedural time and device exchanges.

Interwoven helical wires provide redundant support against local compression, preventing complete failure if one wire collapses.

A joining liner connects an implant to a stent graft gate, maintaining a crumpled state via radial force to reduce leakage in branched vessels.

A biodegradable stent uses a 3D-printed polymer structure to deliver therapeutic drugs directly to the lesion site.

Segmented strut design minimizes foreign material contact, reducing restenosis risk while maintaining vessel flexibility.

Tensioning a mandrel straightens the guidewire lumen to maintain coating integrity and minimize drug loss during balloon folding.

A stent with wireless power receiving circuitry delivers targeted anticancer therapies.

Precise austenite finish temperature control enables a nickel-titanium stent to resist fracture during high mechanical forces from patient activity.

Segmented telescopic lobes adjust length for caval-aortic access, ensuring hemostasis without interrupting guidewire navigation.

Nested cylinder adjustment and depth gauge enable accurate minimally invasive heart valve implantation without cardiopulmonary bypass.

Piston grooves engage attachment tabs to resolve alignment complexity while maintaining consistent release of self-expanding valves.