Stents TRIZ Cases

An insulated RF plasma catheter creates precise fenestrations in stent-grafts using targeted thermal energy.

A diameter reducing arrangement constricts a stent graft proximal end to align with curved aortic anatomy.

Segmented nitinol stents resolve fixation-flexibility trade-offs in aortic dissections by combining rigid end anchors with flexible central sections.

Folding quadrangular bovine pericardium slices creates a durable prosthetic heart valve that withstands blood pressure while preventing reverse flow.

Magnetic bioactive stent reduces blood flow to aneurysms while attracting magnetized cells to promote vessel wall repair and minimize thrombosis risk.

Radial deformation of polymer tubes induces molecular orientation, balancing radial strength and fracture toughness while reducing recoil.

Magnetic locators and heating elements form stent graft apertures, resolving anatomical variability and alignment precision issues.

Independent balloons flare and expand stents to maintain ostium dilation at bifurcations.

Heating a polymer stent to 48°C–54°C during crimping enhances balloon retention force while preserving structural integrity.

Extruding nested magnesium and aluminum sleeves at elevated temperatures creates a press fit structure with enhanced mechanical stability.

Plasma treatment functionalizes medical device surfaces to enable uniform bioactive coating adhesion.

Biodegradable ECM anchored valves replace suturing with self-expanding anchors, reducing perivalvular leakage and intimal hyperplasia risks.

A flow reversal sheath with an occlusion balloon redirects blood from the carotid artery to the jugular vein.

Segmented polyamide layers with distinct thermal properties prevent polymer shredding during high-pressure angioplasty inflation cycles.

A partially reinforced implant capsule balances radial strength and flexibility to ensure accurate coaxial alignment during deployment.

A mobile external coupling with a cylindrical sealing cuff creates an interference seal between the main prosthesis and branch vessels.

A handle actuator with a mechanical hard stop arrests follower rotation at a specific degree to execute precise medical device functions.

Segmented stent design resolves the contradiction between radial stiffness and flexibility by using varying structural configurations along the vessel.

A braided fibrous sheath with a non-porous layer protects vessel walls from abrasion during large instrument deployment, reducing stroke risk.

Non-uniform stent crimping resolves vessel access contradictions by segmenting cell structures to prevent restenosis and enable localized drug delivery.

Dynamic fenestration ring expands upon branch prosthesis insertion to accommodate anatomical variations and reduce endoleak incidence.

A false lumen occluder uses a gapless stent graft and nested carrier catheter to deploy an occlusive barrier.

A collapsible tubular member with expandable anchors isolates healing tissue from nutritional contents.

Gel-spun bioabsorbable polymer struts maintain structural integrity under pressure loads.

A guidewire adjuster moves a stent relative to a delivery sheath via axial actuation.

Nested catheters with dedicated flushing channels remove trapped air via CO2 injection, preventing emboli during interventional device deployment.

Parallel convex struts on a flange portion redirect embolic material distally, reducing stroke risk in patients with atrial fibrillation.

A balloon catheter features a retractable sheath and locking mechanism to adjust exposed length.

Radial force reducing stent crown tips lower vessel wall pressure to prevent tissue perforation during peristalsis.

Stepwise compression via nested workpieces stabilizes large implants, preventing distortion during delivery device insertion.

A hydrophilic polymer substrate supports an amorphous bioactive agent layer deposited via a non-solvating solvent to prevent interpenetrating network formation.

A helical stent uses a zig-zag wire pattern to enhance flexibility and kink resistance in vascular applications.

Axial compression of the native valve complex between fixation members prevents leaflet damage and reduces embolism risk.

Segmented helical struts with ductile hinges resolve recoil and buckling trade-offs while ensuring uniform vessel support.

Segmented expandable devices coupled via a portal side opening restore branch vessel perfusion while simplifying delivery through a single access site.

An expandable fixator anchors a guidewire within a coronary vein to support lead advancement.

Pivotal deployment struts on a channeled dilator tip secure endovascular devices, preventing longitudinal shifting and leakage in tortuous vessels.

An expandable catheter retains an arched profile during inflation, treating stenoses in curved vessels without causing dislocation or rupture.

Segmented self-expanding vascular anchors accommodate vessel shape variations while maintaining alignment during insertion.

A self-expanding stent applies a restraining material that releases gradually, reducing vessel wall trauma and preventing hyperplasia.

Segmenting the elongate shaft into bendable sections enables precise positioning of replacement heart valves within the tricuspid annulus.

A monolithic stent design merges scaffolding and mesh members into a single structure.

Local variation in stent compression balances securement with daughter vessel access, reducing restenosis risk.

Segmented stent grafts with variable spacing resolve the trade-off between manufacturing simplicity and bending adaptability.

Segmented rollers and lateral blocks enable precise navigation through tortuous body lumens, reducing tissue trauma during procedures.

A vascular prosthesis delivery device uses a rotatable handle to control longitudinal movement of the push rod.

Polymeric cover prevents tissue ingrowth on strut rows but allows it on connectors, resolving migration versus removal trauma.

Multi-layer annular expansion overcomes orientation gradients in tube walls, achieving uniform molecular alignment for enhanced compression strength.