Stents TRIZ Cases

Elastic bearing shell applies prestress to ball head via restoring force, eliminating play and noise without additional rubber components.

A shape-changing intragastric device occupies gastric volume to induce satiety and delay emptying.

Selective warp yarn extraction creates seamless tapered transitions in woven vascular grafts without compromising structural integrity.

An integrated catheter combines dilation and thrombus removal functions via a valve-controlled balloon, reducing procedural complexity.

Separate delivery stages and dynamic axial adjustment eliminate custom manufacturing needs while reducing endoleak risks.

Segmented magnitude and direction controls in a steerable catheter handle resolve the trade-off between steering versatility and operational intuitiveness.

Segmented release wires mitigate premature detachment in tortuous vasculature.

Truncated cone geometry and deployable winglets anchor a valved stent to prevent migration and peripheral leaks during catheter-based deployment.

Dynamic pressure modulation anchors the balloon while stretching tissue, extending service life and improving pathology detection.

Endovascular aortic root replacement device uses nested catheter delivery to reduce surgical complexity while maintaining coronary perfusion.

Intentional defects in the tissue layer allow expansion without detachment, resolving endothelial dysfunction and thrombosis risks.

A biodegradable holding member yields after a set duration, allowing the implant to elastically deform and gradually reduce its minimal internal diameter.

Segmented spiral strands enable the stent to conform to changing aortic diameters while maintaining radial resistive force.

A self-expandable aortic implant integrates valve and stent graft components for percutaneous deployment via femoral access.

A prosthesis delivery handle nut mechanism transitions between engaged and disengaged configurations to control device deployment.

Spiral tissue anchors distribute mechanical strain across curved segments, preventing local stress concentrations that damage soft cardiac tissue.

Hydrophilic resin coatings on balloon catheters prevent accordion deformation while maintaining inflation response.

A control handle uses a ratcheted trigger mechanism to incrementally retract an outer sheath for precise prosthesis deployment.

Radial expansion rings increase deployment force and a core advancement wire reduces friction during sheath advancement.

Segmented circumferential stents with axially expanding connectors resolve variable foreshortening and stiffness trade-offs.

A hydrophilic balloon membrane coated with active ingredients and urea enables immediate drug release upon expansion.

Fastening means secure fleece sections on stent grafts, preventing flap formation and reducing thrombosis risk.

Composite polymer implant uses dual degradation rates to maintain tensile strength while enabling tissue replacement.

Concentric tubular sleeves unfold against vessel walls to eliminate recoil and thrombogenicity caused by mechanical stress during insertion.

A pulling suture system crimps and loads braided stent prostheses through a funnel, preventing asymmetrical deformation during deployment.

Vision inspection detects scaffold alignment errors in real time, eliminating manual intervention and destructive testing to boost production yields.

Cuttable tubing allows variable length adjustments for neurovascular flow diverters, reducing SKU inventory complexity.

A collapsible balloon with a support structure provides counterforce to prevent displacement during deployment.

Cold-drawn plastic enables a rolling fold retraction mechanism, reducing pulling force and preventing stent damage during deployment.

A pivoting locking knob compresses a slotted collet to exert radial pressure on an inner catheter for secure positioning.

Partial thread coverage reduces friction during shape alteration while maintaining deployment redundancy.

A medical stent integrates a radiopaque marker coil within its layered structure to enhance visibility under radioscopy.

Alternating high and low weave density regions prevent lumen closure in tortuous anatomy while maintaining structural integrity during deployment.

Segmented resilient sensor construct and rigid anchor frame minimize IVC wall distortion while enabling accurate wireless fluid status estimation.

Flexible pouch with narrowed portion manages blood flow around prosthetic heart valve frame, preventing regurgitation from ischemic dysfunction.

A medical device release system uses a coil spring securement member to translate a release wire for precise implant deployment.

Swellable hydrogel expands radially to anchor the prosthesis, preventing endoleaks and device migration.

A balloon catheter system uses vibrational waves to generate internal fluid swirls for uniform temperature distribution.

Alternating hoop and flex cells with wider flex struts resolve the contradiction between radial force and deliverability through small sheaths.

A tacky silicone coating adheres to vessel walls, preventing fully covered stents from migrating during deployment.

Varying strut thickness accommodates narrow lumens in small vessels, reducing in-stent late loss and diameter stenosis below 0.20 mm.

Increasing the inner surface hardness of a delivery device cover prevents stent barbs from digging into the material, reducing operating effort.

Segmented compression and support members with a nested funnel design reduce stress on leaflets during crimping, preventing structural damage.

A bow stent uses nested inner and outer members to adjust strut length, causing secondary struts to bow outward and apply radial force against the vessel wall.

A hyperboloid fixation coupling with self-expanding nitinol rings seals within fenestrations to enable multi-directional movement.

A catheter system uses nested elongated elements to adjust treatment zone length and manage pressure during localized drug delivery.

Applying electrical current to an interventional element creates electrostatic attraction that secures clot adhesion during retrieval through tortuous anatomy.

An inverting sheath mechanism reduces axial force requirements by replacing sliding friction with a rolling motion, preventing device damage.

Lithographic techniques configure magnesium foil features to replace laser cutting, boosting productivity while maintaining precision.

A radial compression mechanism uses a tensioned string wrapped around circular dies to distribute force evenly and increase mechanical advantage.