Stents TRIZ Cases

Integrated stent graft and valve members replace complex annular rings, reducing surgical risk while treating tricuspid regurgitation.

Curving the guidewire tip maintains a safe distance from the balloon, preventing erroneous heating of non-target tissue during ablation.

Helically shaped elongate member wraps graft to create torque folds, maintaining lumen volume and preventing kinking in tortuous anatomies.

Internal helical formations impart helical blood flow while external support structures prevent kinking, resolving stiffness trade-offs in vascular grafts.

Nested balloons protect the therapeutic composition from degradation during insertion and release it only at the target site.

An intermediary guard structure prevents suture entanglement with crossover structures, resolving the contradiction between profile reduction and reliability.

Pre-modifying in situ vessels via pressure, scaffolds, or agents reduces intimal hyperplasia and improves long-term graft patency.

A flexible stent-graft uses polymeric graft layers to allow a wire stent to move freely between the layers.

Segmented pusher components and self-service ratchets resolve the contradiction between device complexity and stent engagement precision.

A hemostasis valve uses side port conduits to direct flushing fluid along the housing side.

A segmented aortic stent-graft uses perforated rings and graft bands to maintain blood flow through the prosthesis structure.

Pre-inflating the balloon removes heat-set folds to eliminate strut misalignment and cracking during stent crimping.

Segmented nitinol anchors deploy independently to resolve placement and retrieval contradictions in minimally invasive cardiac repair.

A linear sliding assist device mediates force transmission to delivery wires during intravascular procedures.

An asymmetric stent design uses opposing curved apices with distinct radii of curvature to conform to tortuous anatomy.

Embedding a radiopaque marker within the synthetic graft layer improves visualization during implantation, reducing trauma from inaccurate placement.

A catheter system uses a balloon anchor to secure placement within an intervertebral disc through a small atraumatic needle.

Tensioned nitinol sheaths recrimp fully deployed valves, enabling functional assessment without invasive removal.

Calendered PTFE films achieve low fluid permeability and high suppleness by decoupling thickness from porosity.

A catheter tip integrates a spring element to provide longitudinal flexibility and pushability for vascular navigation.

A pre-shaped curved cannula imparts inward force on the proximal end of a stent-graft to ensure proper alignment against the vessel wall.

A customized alloy with optimized yield point and work hardening minimizes vessel trauma by reducing elastic recoil after balloon deployment.

Compressible loops on a flexible guidewire facilitate precise endograft placement, reducing procedural time and alignment errors.

An extension dilator nested within a pusher catheter cannulates the blind internal iliac artery, enabling precise side branch stent placement.

Segmented collection ports enable selective contrast media removal from multiple vessel locations while minimizing retrograde flow and blood discard.

Thumbwheel pinion mechanism advances stent engagement member and retracts sheath to prevent proximal compression during deployment.

A retrievable intra-atrial shunt relieves elevated left atrial pressure while enabling safe repositioning and retrieval via compression mechanisms.

Pivotable fenestrations on an endoluminal prosthesis dynamically open to maintain branch vessel patency while the main graft seals against the aortic wall.

Segmented ureteral stent collapses under bladder pressure to prevent urine backflow, resolving flank pain caused by reverse flow.

A rolling membrane catheter expands longitudinally to navigate tortuous vascular paths.

Segmented strut reservoirs and masking processes enable precise spatial distribution of multiple agents while preserving mechanical strength.

A hypotube with a circumferential cut pattern balances flexibility and structural integrity to navigate tight lesions while maintaining guidewire stability.

Nested stent graft legs extend into the main body to resolve space constraints at the aortic bifurcation while maintaining reliable sealing.

A percutaneous catheter system isolates the stenotic aortic valve to deliver dissolution fluid directly to calcific deposits.

An asymmetrical braided stent redirects blood flow away from aneurysms while preserving perfusion to adjacent branch vessels.

An expandable catheter stabilizes the subclavian vein and releases contrast medium to visualize the vessel lumen, resolving puncture site accuracy challenges.

Forming stent connectors with controlled brittleness enables mechanical removal during additive manufacturing processing.

A steerable catheter handle uses a ball and socket mechanism to independently control flex magnitude and direction through axial and rotational adjustment.

Expandable scaffold uses biodegradable gripping material to prevent initial migration upon implantation.

Segmented shaft fibers guide tension threads to fold implants uniformly, preventing buckling caused by non-parallel force application.

A sleeve retraction system uses pull back lines to move a constraining sleeve after device deployment.

A double balloon catheter dissolves arterial clots while trapping debris, restoring blood flow without requiring specialized facilities.

An intraluminal member delivers sclerosant to disrupt the vessel wall.

A biodegradable stent uses a copolymer coating that erodes via surface degradation to maintain mechanical integrity.

A hybrid aortic graft assembly uses an eversible cuff to enable single-entry deployment and rapid distal perfusion re-establishment.

Opposite-handed lead screws with distinct pitches counteract elastic shortening during radial expansion, maintaining precise axial positioning.

A crimping tool compresses prostheses through a funnel segment using a suture locking mechanism.

Self-expanding stent structure exerts chronic outward radial force to accommodate tissue growth.