Stents TRIZ Cases

Segmented graft portions allow independent movement to prevent kinking and cellular infiltration during deployment in curved vessels.

Relocating occlusion to the apex prevents thrombosis while preserving ostial blood flow and eliminating rupture risks associated with traditional LAA closure.

Hydraulic actuation drives a delivery capsule through containment and deployment phases, enabling precise mitral valve prosthesis positioning.

Dual guidewire catheter assembly positions stents in bifurcated vessels with precise alignment.

Varying stiffness bridges in a monolithic stent enhance kink resistance and radial force while minimizing metal content.

Overlapping leaflets conform to varying branch vessel geometries, resolving leakage risks at aneurysm bifurcations without complex manual connections.

A balloon sizing member measures esophageal inner diameter to enable controlled energy delivery for precise tissue ablation.

A braided stent uses first and second filaments spiraling in opposite directions to provide structural support.

Segmented spikes on expandable structures penetrate irregular vessel walls, resolving non-uniform drug distribution from flat struts.

Segmented stents on a drug balloon prevent restenosis by enabling non-overlapping re-implantation in gaps between original structures.

Different braiding angles constrain wire movement, preventing diameter changes during axial compression or extension.

A passive negative pressure endoluminal device with one-way valves protects anastomosis sites by evacuating fluids through peristaltic contractions.

A medical balloon integrates a radiopaque foil layer between inner and outer walls to provide X-ray visibility without contrast agents.

Separate pressure filling of an inflatable cuff and fill structure secures anchoring while isolating thoracic aneurysms.

A bridge member fills the gap between a catheter tip and an expandable device, maintaining surface continuity during navigation through curved vessels.

A tubular loading device compresses collapsible pulmonary implants into delivery catheters using a narrowing passage and inner earner pin.

A self-expanding venous cannula stents the caval axis to maintain luminal width and prevent vessel collapse during cardiopulmonary bypass.

Retracting the delivery sleeve eliminates overhang that obstructs blood flow and triggers tissue growth.

A guide tube with multiple stents and guidewire-engaging portions advances into a lumen for sequential deployment.

A V-shaped intermediary stent element stabilizes adjacent ring stents on a graft, preventing rotation and tilting during catheter delivery.

A curved dilator tip reduces vessel wall trauma by distributing proding forces along an arc, preventing stenosis caused by jerking actions.

Bent link sections connect annular bodies to improve trackability in blood vessels.

Conformal coatings deposit biocompatible materials on stents to enable prolonged drug delivery, preventing occlusions and infections.

Flexible side branches enable precise branch vessel alignment, reducing operation time and radiation exposure during implantation.

A stent delivery apparatus uses a restraining cord and trigger wires to hold the proximal end in a compressed configuration during vascular navigation.

Three independent retraction mechanisms resolve deployment accuracy trade-offs by segmenting control functions.

A composite prosthesis support structure uses a dual-melting-point polymer sheath to bond securely to the outer textile layer.

A balloon catheter penetrating element uses external screw threads engaging internal guide bore threads to anchor securely within a vessel occlusion.

Segmentation and parameter changes resolve clogging by allowing the auxiliary net portion to degrade after preventing reflux.

Segmented zigzag polymer yarns deliver flexible vessel support while eliminating foreign body reactions through natural degradation.

Tapered compression members collapse heart valves while support recesses secure stents, eliminating undue stress during loading.

A stent delivery device uses a guiding elongated body with a variable tip area to adjust flexibility, reducing procedure time and lumen damage risks.

Atomic layer deposition applies a biodegradable adhesive to join stent surfaces, allowing gradual load release that resists vessel compression.

Curved retrieval mechanisms maintain secure attachment through rotation, resolving alignment difficulties in narrow anatomical channels.

A self-cleaning blood vessel filter traps embolic material and expels it back into the larger artery.

Variable stent spacing on a curved graft prevents buckling during straight catheter deployment.

Balloon expands for anchoring while remaining compact for insertion through narrow instrument channels, resolving passage constraints.

Differential weave patterns along inner and outer curvatures divert flow to prevent emboli while a removable filter protects the brain.

Bioabsorbable polymer scaffold degrades over time to resolve the contradiction between maintaining radial strength and enabling natural vessel remodeling.

A 250 nm mixed oxide layer on intravascular stent wires reduces nickel diffusion while maintaining mechanical durability.

A delivery catheter uses independent release links to axially slide or rupture pods for sequential stent graft deployment.

An aorta treatment device uses an evertable cuff to facilitate coaxial suturing of branched artificial blood vessels.

An arc-shaped partial stent covers the aneurysm neck to prevent rupture while preserving bifurcation flow.

A pulmonary vein prosthetic valve mitigates mitral dysfunction via nested delivery, enabling retrieval and preventing dislodgment.

A protective polymeric layer shields antibiotic coatings from degradation before implantation, then dissolves to enable rapid drug release.