Stents TRIZ Cases

A delivery device with a conical housing compresses stented heart valves for precise anatomical placement.

A suction stent uses a porous shapeable material to seal hollow organ leaks via radial compression and vacuum pressure.

Anchor arms hook under native leaflets while a braided flange seals the annulus, preventing migration and perivalvular leakage.

Segmented reinforcing tube with hollow grooves provides push force while preventing irreversible vessel damage during angioplasty.

Segmented structural stent elements support a flexible membrane forming a 120% cross-sectional bulge that seals attachment sites against type I endoleaks.

External and internal helical formations prevent kinking and reduce turbulence in flexible vascular grafts.

Coiled nitinol rings apply radial force to seal aneurysm ends, preventing migration and endoleaks in vascular treatments.

A medical device handle uses fiber routing to create slack that delays actuation of specific functions.

A mechanical implant positioner uses frictional engagement to deploy intravascular devices with controlled axial and rotational movement.

Deforming cutout edges locks radiopaque markers via form-fitting interference, eliminating welding costs while maintaining X-ray visibility.

A recapture assembly with a transitionable frame forms a funnel shape to compress and retrieve partially deployed prosthetic heart valves.

Staged degradation in composite bioabsorbable devices accelerates mass loss after function, eliminating secondary surgeries and reducing tissue stress.

Nested retaining members constrain diverging anchoring legs inside tubular end members, reducing profile diameter and preventing leg intermeshing.

Dual C-shaped cylinders form a dense mesh to provide stable scaffold support for embolic coils during aneurysm treatment.

A radial cutter implant applies continuous pressure to urethral tissues, creating incisions through infarction to expand the passage.

Expandable engagement member exerts axial forces to secure stents, enabling recapture and repositioning without complex structural failure risks.

Superelastic nitinol connectors join biodegradable metal segments in a stent that degrades over time, reducing foreign body reactions.

Gravity-driven reverse flow captures embolic material in an external collection bag, reducing stroke risk without complex filtration systems.

Annular rings anchor the distal stent portion to reduce friction and deployment force for accurate placement.

Segmented flushing removes trapped air from stent graft delivery devices using saline and carbon dioxide.

Polyester coating matches degradation to prevent premature strength loss during absorption.

A bi-directional expandable scaffolding device transitions between compressed and deployed configurations to increase the cross-sectional area of a body lumen.

A stent delivery system incorporates a deployable member that expands to cover the access hole upon withdrawal.

A retrievable intra-atrial implant uses a hub assembly to transition between fixed deployment and retrieval states.

A bare metal stent features drug eluting reservoirs with recesses and interlocking mechanisms to anchor therapeutic agent inlays securely.

A retention member constrains the guide wire during stent deployment to prevent vessel damage from excessive protrusion in tortuous blood vessels.

Variable diameter braiding tools create patient-specific implants that reduce vessel wall stress and ensure uniform radial force distribution.

An expandable imaging hood displaces blood with clear fluid to enable direct visualization of ostial lesions for precise stent positioning.

A heater coil in an implant delivery device changes electrical resistance upon detachment.

Pivotable flange feet adapt to non-cylindrical valve geometries, preventing leakage during implantation.

Roughened stent surfaces anchor polymer-free limus drugs, eliminating carriers that cause restenosis and thrombosis.

Pulsed aiming light enables intermittent visual inspection of spot lesions, resolving the trade-off between targeting precision and tissue visualization.

A re-rollable cross-linked biopolymeric membrane wraps cylindrical tissues to support wound healing.

Differential compliance flares stent ends at vessel ostiums, preventing main vessel extension and easing future recrossing.

Gimbal mechanisms in steerable handles decouple radial flexion magnitude from circumferential angle, eliminating cumbersome multi-actuator systems.

Multidirectional pins on a bare metal stent segment anchor the device in the aortic neck, preventing migration and reducing type I endoleak risks.

Novel molybdenum rhenium alloy enhances medical stent mechanical strength and durability while maintaining a compact profile.

Radiopaque strips on a flexible outlet graft prevent torsion and bending, ensuring large-volume blood flow without compromising ease of insertion.

A bioabsorbable stent integrates a prohealing layer to promote rapid endothelial cell binding upon deployment.

Interdigitating retainers constrain stent distal movement while the outer member retracts, reducing potential energy storage during deployment.

A re-compression assembly with radiopaque markers monitors prosthetic valve expansion diameter in real time.

Segmented multi-lumen stent graft design isolates branch vessel pathways to prevent endoleaks and displacement during aortic aneurysm repair.

An unstitched trough boundary enables direct cannulation of a helical side branch, resolving sealing conflicts along the curved aorta wall.

Segmented nickel-titanium stents with uneven proximal ends prevent protrusion into main vessels at bifurcations.

Welding multiple rod mandrels creates a unified ball tip that withstands deployment forces while simplifying assembly.

Variable hoop strength in a differential dilation stent maintains patency under compressive forces, preventing collapse during arteriovenous fistula creation.