Stents TRIZ Cases

Microstructured stent surfaces generate non-frictional grip to anchor devices within biological lumens without excessive outward pressure.

Segmented guard reservoirs protect bioactive coatings from removal during insertion while enabling controlled release at target tissue.

Movable biocompatible flaps seal stent graft fenestrations until displacement allows side branch access, resolving alignment and leakage contradictions.

A tubular vascular occlusion device with variable porosity regions selectively blocks aneurysms while preserving adjacent blood flow.

Varying strut cross-sections increases the moment of inertia toward hinge regions, distributing radial load stresses evenly and preventing stent collapse.

Resilient finger members provide non-hyperstatic support for heart valve prostheses, eliminating stress from rigid assembly during delivery.

Fenestrated Nitinol micromeshes reduce delayed aneurysm rupture rates while enabling rapid endothelialization through precise pore configuration.

Segmented lumens in a tapered tip isolate guidewires, eliminating entanglement risks and reducing procedure time during complex vascular deployments.

A translatable stiffening tube provides rigidity for crossing and exposes an inflatable balloon for dilation within a single integrated catheter device.

Radio-opaque protective element shields balloon during inflation, preventing needle damage while enabling accurate localized drug delivery.

A biocompatible plastic membrane implant bridges diseased vessel segments to isolate cerebral aneurysms from blood flow.

Even-numbered platinum alloy strands in a braided stent resolve the contradiction between X-ray visibility and extending performance.

Segmented multi-layer stent frame design minimizes foreshortening to improve valve positioning accuracy.

Serial endoanchors nested in an applier catheter enable sequential deployment, resolving procedural efficiency versus device complexity trade-offs.

Inner conduit locking members engage the stented valve to prevent blood flow migration, enabling stable pulmonary valve replacement.

Segmented wire segments with varying sinusoidal amplitudes compensate for axial shrinkage during radial expansion, preventing stent migration.

A temporary carotid filter captures embolic masses to prevent secondary strokes while patients await antiplatelet therapy.

Self-expanding anchors stabilize gastric devices in the stomach, eliminating complex stapling procedures to reduce adverse events.

An inner balloon slides along a shaft inside an outer balloon to locally widen stenosed sites, reducing restenosis risk and procedure complexity.

Composite coating transfers from expandable balloon to vessel wall via electrostatic deposition, enabling time-released drug delivery without permanent implant.

Multi-diameter self-expanding stents alter pressure gradients in sinuses to resolve pulsatile tinnitus without complex control systems.

Rotatable cannula winds suture to compress stent graft diameter, enabling repositioning without additional implants.

Funnel-trap support members stabilize IVC filters against blood flow, enabling reliable recapture of tilted devices.

Segmenting the outer sheath and inverting the withdrawal sequence allows precise stent positioning without synchronized two-person coordination.

Nested internal branch and scalloped fenestration shorten iliac branch devices for patients with short common iliac arteries.

A dual-lumen balloon catheter positions guide wires to deploy stents accurately at vessel bifurcations.

A transcatheter delivery system uses a funnel-shaped loading cone to compress self-expanding prosthetic heart valves for minimally invasive percutaneous insertion.

Radiopaque markers on the intraluminal device enable precise positioning via visualization, eliminating radiography risks and procedural complexity.

Plastic-deformable core members arranged isotropically prevent kinking in curved arteries while maintaining lumen expansion.

A guiding sheath system uses a cap and extension member to deflect the inner sheath distal end into a curve.

A tubular endoprosthesis deployment device uses a permanently fixed support and filamentary connections to form a traction loop for precise positioning.

A co-registration system aligns intravascular ultrasound with extraluminal radiological images to visualize vessel flow and stent graft placement.

Segmented occluding device adjusts length and size via friction and pressure, preventing coil escape during cerebral aneurysm treatment.

Segmenting the stent into an inner strut core and an outer knitted layer resolves radial strength versus structure complexity trade-offs.

Partial circumferential frames at side openings increase positional tolerance, eliminating the need for highly accurate alignment with branch vessels.

Segmented composite film with balanced angles prevents foreshortening, enabling large diameter angioplasty without vascular trauma.

A tissue scaffold implant uses a bridge structure and lateral anchor to expand stenotic lumens.

Insertion guide rods in an insert tube enable immediate delivery and expansion of branch stents to vascular bifurcations through a single operation.

Tethers link bladder and kidney segments, allowing the orifice to compress against reflux while the floating portion prevents trigone irritation.

A biliary diagnostic sensor analyzes biological matter electrical properties to guide endoscopes through the duodenum.

A branch vessel prosthesis with a curved central region prevents branch vessel blockage by adapting to varying anatomical angles.

An adjustable ring stripper expands to engage and strip arterial plaque, resolving incomplete removal risks.

Blood vessel stents with integrated electrodes record neural signals while minimizing surgical risks associated with direct brain penetration.

Segmented crown elements in a biodegradable metallic stent prevent contour damage during crimping while ensuring radial strength.

Covalently bonded polymer coatings resist sterilization degradation while preventing thrombus formation to minimize anti-platelet therapy needs.

A modular stent assembly uses snap-fit coupling elements to join interlocking sections, enabling customizable length and flexibility configurations.

A prosthetic heart valve with a cellular structure of joists and nodes facilitates one-way blood flow through its lumen.

Compliant joints pivot links relative to posts, enabling controlled radial expansion of the prosthetic valve frame while maintaining structural stability.