Stents TRIZ Cases

Pre-plan 3D puncture points and catheter trajectories, then use live imaging to align laser fenestration and avoid stent struts.

Aligned fibrils move with stent struts during expansion and contraction, helping prevent cover wrinkling and tearing.

A unibody graft combines stepped-balloon and low-profile limb expansion to balance blood flow and radial strength in stenotic iliac arteries.

An axially movable valve support simplifies prosthetic valve mounting and crimping while preserving leaflet integrity and alignment.

Sliding delivery introducers and constraining sheaths help pass a collapsed stent-valve through a haemostasis valve without kinking.

Alternating curved portions create multi-directional vessel-wall contact to stimulate baroreceptors while limiting interference with blood flow.

A drawstring deflects the expandable stent into a curved shape to seal gastrointestinal leaks and protect wounds from stomach acid.

A flared, enlarged-body endoscopic stent with a polymeric sleeve helps limit migration and guide bile away after bariatric procedures.

The pivoting ball-and-socket nosecone follows curved vasculature, reducing axial force, friction, gap formation, and tissue damage during valve delivery.

Movable porous matrices overlap through a form-closed connection, letting implant elements change shape to fit anatomical gaps and support tissue integration.

This case balances restenosis prevention and endothelial repair through a cobalt-chromium stent with arsenic trioxide–tacrolimus coating.

Removable fibers let stents and stent-grafts expand through intermediate diameters for controlled positioning in tortuous vasculature.

An elastic intestinal anchor uses a leakproof sheath and suction tube to adjust diameter, control anchoring duration, and slow migration.

Independent actuators and forceps help access tilted or embedded filters in tortuous vessels while limiting excessive retrieval force.

Preconfigured mandrel protrusions and grooves guide filament winding to form anti-migration loops accurately and improve stent anchoring.

A modular stent assembly seals diseased aortic regions while preserving critical branch artery flow through separate aligned pathways.

Internal radiopaque markers keep a braided stent delivery structure’s outer diameter uniform, avoiding shoulders that may catch during deployment.

A segmented frame anchors in the vena cavae while its uncovered middle admits blood to the right atrium and simplifies deployment.

A multi-port adaptor uses seal spacers and a locking port endpiece to retain dual internal seals in prosthetic valve delivery systems.

Non-circular stent segments store and release energy through shape memory, smoothing pressure changes and supporting blood flow in rigid vessels.

Articulating catheter segments, tension members, and expandable balloons stabilize valve-delivery hardware against blood flow, pressure changes, and heart movement.

A pre-loaded heart valve delivery subassembly uses a distal sheath to simplify implant loading and streamline deployment.

An adjustable stent assist bar engages vascular landmarks to guide precise stent placement and reduce mispositioning.

Removable anti-coiling material enables intraoperative stent trimming for patient-specific fit while reducing fixed-length inventory needs.

An expandable occlusion element delivered through a catheter covers the aneurysm neck, halting blood flow while limiting tissue trauma.

Flexible circuits attached to stents in planar form enable cylindrical deployment, local monitoring, and reduced external connections.

Integrated anchoring rings reduce precise suturing between the heart valve assembly and stent, simplifying manufacture and supporting reliable implantation.

A dual-balloon catheter deploys a W-shaped nasal stent in deeper sinus locations while supporting extended therapeutic drug elution.

Localized crown and strut attachments secure the prosthetic valve while preserving the balloon-expandable stent frame’s mechanical performance.

An expandable membrane modulates vessel diameter to balance atrial pressure reduction with kidney perfusion.

Radial expansion presses the fixation device against the graft and vessel wall to limit migration and endoleaks.

Positioning the guide tube proximal to a curved endoscope channel helps prevent wire biting and lowers guide-catheter retraction force.

An altered extracellular matrix lets compressed valve tissue swell in blood, conform to the annulus, and limit paravalvular leakage.

Axial restraining-tube extensions lace through a compressed endoprosthesis for controlled expansion and precise aneurysm placement.

Invasive surgery and frequent surveillance challenge GI defect care; an expandable absorbent stent uses vacuum suction for closure and fluid management.

An implantable membrane restricts main-vessel flow, redirects blood to renal arteries, and supports diuresis without relying on drugs.

An expandable stent conforms to the native mitral valve and uses anchoring members to limit migration during less-invasive replacement.

Selective covering seals the vena cava interfaces while an uncovered atrial segment preserves flow in this prosthetic valve for tricuspid regurgitation.

A cover holds the balloon at an intermediate diameter until pressure exceeds its yield strength, promoting uniform stent expansion.

A neutral hybrid braid alternates wire handedness to counteract helical bias, limit device rotation, and stabilize catheter delivery.

Radiopaque reference and indicator markers measure valve-end distance during fluoroscopic expansion, enabling diameter monitoring and locking.

This case shows how an expandable endograft receives an expanding substance to partially or fully close a luminal organ percutaneously.

A separately deployed anchoring stent matches reconstructed tricuspid anatomy before a balloon-expandable valve is added for stable placement.

See how segmented tubular members reduce friction during outer-tube movement, helping maintain medical tubular body position on curved shafts.

Sequential-width channels compress soft-tissue grafts before insertion, enabling smaller bone tunnels and a biologic fit that limits micro-motion.

Pulmonary artery stiffening raises pulsatile pressure; a compliant balloon and reservoir-conduit path buffer systolic peaks and reduce right-ventricle load.

Stents hold venous valves open for retrograde blood flow, supporting vessels and making difficult cannulation more accessible.

An ultrasonic cutter creates precise in-situ fenestrations in stent grafts while reducing fraying, heat generation, and procedural time.

Concentric folds let a vascular prosthesis adapter flex around branch prostheses, improving anatomical alignment and reducing endoleaks during aneurysm repair.

A flexible diaphragm and frame balance tricuspid valve closure with controlled regurgitation to ease ventricular afterload.