Stents TRIZ Cases

Variable curvature barb geometry reduces peak principal strain under hemodynamic loads, preventing premature fracture and extending fatigue life.

Segmented tacks stabilize plaque to prevent stent fractures and recurrent stenosis.

Segmented proximal and distal components self-expand to accommodate anatomical variations while preserving blood flow to critical structures.

A medical device release system enables percutaneous delivery of replacement heart valves through a catheter assembly.

Segmented stent sections and nested side branches resolve deployment reliability issues at complex bifurcation sites.

Radial cutting elements on the outer tubular member reduce friction during deployment, lowering force requirements for smaller device sizes.

A branched mandrel and conductive collector form continuous resorbable vascular graft walls via electrostatic deposition.

A self-expanding stent-graft uses variable stiffness sections to accommodate branch vessels and maintain a secure seal within the abdominal aorta.

Self-anchoring valves restore venous outflow patency after obstruction removal, reducing retrograde pressure in neurovascular conditions.

Woven filamentary shells expand radially to block blood flow into aneurysms, resolving packing density issues found in traditional coiling methods.

Mucoadhesive powder on the sleeve prevents tissue irritation and stricture while maintaining nutrient absorption inhibition.

Radiopaque markers on the outer sheath enable precise alignment of intraluminal devices, resolving trade-offs between placement precision and system complexity.

Biodegradable polymeric stents maintain sinus patency while eliminating surgical removal risks via natural tissue resorption.

Segmented balloon structures create perfusion channels to cover perforations without blocking downstream myocardium blood flow.

A monofilament implant uses a rotating bearing to prevent torsion buildup during carotid artery deployment.

Flexible couplings between sprung sections allow a stent to expand with vessel growth, reducing migration risk and avoiding surgical removal.

Expandable mandrel arms dynamically adjust diameter to hold stents securely, preventing damage during insertion into delivery tubes.

An inverted second leg nested in the first leg enables single-catheter delivery, while a variable-radial sealing stent prevents leaks at vascular bifurcations.

Segmenting the dissection flap reduces expansion stress required for complete reapposition, addressing dynamic changes in aortic tissue.

Segmented internal insulating ducts isolate filamentary lines from surgical guides, preventing entanglement during endoprosthesis deployment.

Grooved sleeves hold lubricant to reduce static friction, lowering peak withdrawal force by 95%.

Cam-driven dies maintain zero gaps during radial compression, eliminating die-to-die clearance errors that damage stents and catheters.

Segmented tubular components navigate tortuous anatomy while imaging elements mounted on the outer tube guide accurate implant placement.

Withdrawing the tubular film releases the constraint, allowing precise stent expansion while minimizing friction and misplacement risks.

A prosthetic pulmonary valve uses an external barrier member to secure positioning within the vascular conduit.

Segmented electrospinning yields high porosity for endothelialization and low porosity to prevent endoleaks in stent-grafts.

A catheter system uses an inverting sleeve to adjust exposed balloon length via a retraction cuff.

Vacuum drying bonds hydrated collagen coverings to stent elements, eliminating cumbersome sutures and ensuring stable attachment during expansion.

Radial expansion of an internal stent member reduces removal force by receding tissue ingrowth, resolving migration stability trade-offs.

A tissue stent uses a flexible synthetic coating to mechanically anchor an internal structure between the support and the outer layer.

A dual-balloon system treats bifurcated lumens using an off-axis balloon with variable wall thickness for controlled expansion.

Segmented catheter shafts enable multi-plane bending to navigate tortuous anatomies, reducing vessel dissection risk and surgery duration.

An asymmetric polygonal cross-section minimizes friction and kinking while maintaining stent support and fluid flow.

A translucent base window reveals colored fluid in an internal cavity to show balloon inflation status.

Segmented tubular components and a sliding loading member resolve permanent deformation risks during compressed storage of plastic self-expanding stents.

A low profile cardiac valve uses a unitary superelastic metal frame to enable percutaneous delivery through small catheters.

A second protection member covers the inner insertion member to provide continuous stiffness and prevent kinking during medical tubular body deployment.

Longitudinally spaced polymeric segments on a self-expanding stent provide leak resistance while preserving the flexibility needed for tortuous anatomy.

Catheter delivers structural stent through anus to restrict bowel deformation, eliminating external incision and reducing patient burden.

Medical device handle with slide lock and pivot ring enables radial expansion and lateral positioning control of stent frames.

A coaxial sheath and pusher mechanism deploys an expandable implant into the prostatic urethra to mechanically relieve urinary obstruction.

Segmented tubular sections preserve braided structure integrity during catheter delivery, ensuring uniform surface coverage at connection points.

A medical device features an expandable element that transitions from a straight collapsed shape to a three-dimensionally curved configuration.

A non-symmetrical stent design features opposing sets of curved apices with distinct radii of curvature to optimize vessel wall contact.

Rounded crown tips with controlled curvature radii prevent wire fracture and tangling during crimping, ensuring reliable neurovascular deployment.

A helical balloon catheter deflects into a coil profile via pull wire tension to apply radial force.