Stents TRIZ Cases

A stent delivery device uses a fixed steady sheath with visible markings to guide outer catheter movement.

Longitudinal bumper movement resolves assembly stability trade-offs while ensuring precise stent deployment.

Segmented flanges anchor varying thickness tissue walls, inhibiting migration and reducing bile leakage in biliary drainage.

Wave-patterned inner catheters reduce frictional forces between the self-expanding stent and outer sheath, preventing deflection and ensuring precise placement.

Nested inner core wires pass through graft cages without snagging, resolving access contradictions during minimally invasive aneurysm repair.

A slicing engine generates printable 3D model segments with connection points and optimized layouts.

Porous sol-gel matrices improve adhesion and reduce drug washout during deployment, preventing ischemic events in vascular treatments.

Segmented stent grafts employ polymeric compound coatings at aperture interfaces to exclude aneurysmal regions while maintaining branch artery patency.

A lubricious sleeve mediates between the adaptor and catheter assembly to reduce sliding friction.

A recapture sheath funnel segment transitions to an expanded shape to slide over a partially deployed prosthetic heart valve.

Segmented graft tubes with barbed outer surfaces reduce landing zones, preserving intercostal artery flow during thoracic placement.

A segmented aortic valve frame transitions from compressed to expanded configuration using shape memory alloy properties.

A self-curving stent-graft uses internal springs to transition from a compressed delivery state to an expanded curved configuration.

Flexible conical stabilizer secures introducer sheaths within catheter hubs, preventing premature detachment and jamming during embolic coil delivery.

Variable porosity regions in a bioabsorbable sleeve control nutrient absorption rates, preventing dumping syndrome and severe surgical complications.

Segmented catheter shafts optimize inflation speed and vessel access by combining rigid coaxial sections with flexible multi-lumen distal portions.

Slitted outer sheath reduces friction forces during self-expanding stent deployment by allowing proximal retraction without complex mechanisms.

Seam pinching creates a branch portion from excess graft material, reducing device complexity and production time.

A multi-mode catheter integrates a valve mechanism to control fluid infusion, balloon dilation, and prosthesis delivery within body lumens.

Guide wire indwelling enables independent device insertion, eliminating collaborative operations and reducing procedural time.

Dilating the sinus ostium with a catheter device to restore normal air pressure.

Segmented balloons selectively occlude injury sites while preserving perfusion, resolving the trade-off between hemorrhage control and organ damage.

An internally connected expansion ring imparts outward radial force to a braided implant, enabling selective reinforcement in neurovascular defects.

A bifurcated tubular graft with a bioprosthetic valve regulates blood flow through the tricuspid valve, eliminating regurgitation without open-heart surgery.

A stent delivery system uses dynamic constraints to enable precise placement and recapture of self-expanding implants.

Segmented stent and graft components adapt to varying vessel diameters, preventing retrograde flow while minimizing surgical invasiveness.

A stent graft scallop region features a deployable backstop that anchors into aortic branch vessels.

Chemical fixation anchors water-swellable polymer particles to the stent surface, preventing peeling during expansion.

Hydrogen pickling embrittles iron implant surfaces to accelerate degradation, preventing delayed vascular occlusion.

Deployable engagement elements retract a transcatheter heart valve through a flexible shaft, enabling percutaneous removal without open surgery.

Cauterized suture profiles increase pull-out force to prevent device migration and maintain fluid tight seals in aneurysm repair.

Rigid connecting members prevent bare segment overturn during deployment, ensuring secure apposition of the covered stent segment to the vessel wall.

A medical device delivery system uses a keyed push-pull rod to shift an implant between elongated and expanded configurations.

Exposing polymeric stent scaffolds to oxygen-containing gas after e-beam sterilization stabilizes molecular weight and prevents mechanical property degradation.

Separately manipulable introducers deploy a U-shaped bypass conduit through a splittable sheath to bypass occluded vessels without open surgery.

A bipolar ablation device directs energy within a stent lumen to treat stenosis.

Aperture geometry increases shaft flexibility while a polymer layer seals proximal regions to maintain fluid-tight inflation integrity.

Coated vascular devices reduce thrombus formation while braided retainers enhance coil retention, improving packing density in wide-necked aneurysms.

A delivery catheter mechanism discharges adhesive to anchor a stent securely within a body lumen during deployment.

Multi-strand radiopaque filaments enhance implant visibility without compromising mechanical strength or wall thickness.

A balloon catheter features a deformable fluid delivery conduit that transitions between linear and curvilinear configurations.

Hollow strut stents accumulate therapeutic agents within internal cavities formed by sacrificial core removal.

Segmented stent layers with distinct material properties distribute structural loads to prevent fractures in high-stress cardiac valves.

Segmented guide wire lumens and an intermediary shaft reduce procedural complexity by eliminating excessive wire length that previously required two clinicians.

A knitted endovascular prosthesis integrates a continuous helical shape memory alloy yarn to eliminate exoskeleton weak points and prevent endoleaks.

A marker band with an indicator on a medical device delivery capsule tracks rotational orientation during vasculature advancement.

Asymmetric cross-sections prevent rotational drift during delivery, ensuring accurate fenestration placement relative to branch vessels.

A tubular device with a self-expandable skirt anchors in the right upper pulmonary vein to close sinus venosus atrial septal defects.