Stents TRIZ Cases

Nesting an imaging catheter inside the delivery tube reduces device profile while enabling real-time vessel imaging during filter placement.

Segmented bulbous balloons apply targeted tissue deformation while marker bands enable precise annulus alignment, reducing rupture risks.

A balloon catheter stiffening element features a distal end portion with reduced flexural strength to enable flexible navigation through curved coronary sinus vessels.

Intermittent contact allows dynamic stent repositioning to eliminate bare spots and ensure uniform drug distribution.

An expandable bumper assembly fills open space during capsule retraction to prevent kinking and ensure safe valve deployment.

A pericardial balloon catheter protects the esophagus from thermal damage by creating a physical barrier between the heart and esophagus during atrial ablation.

Elongated loop-shaped anchoring structures extend beyond the stent frame to secure fixation without stressing compromised vessel walls.

An electronic prosthetic aortic valve integrates electrodes and a coil within a self-expanding frame featuring a constriction portion.

Segmenting the stent into a removable body and permanent anchor resolves migration risk while simplifying removal.

Segmented delivery system enables repositioning by separating catheter withdrawal from implant deployment.

Sinusoidal ringlets linked by asymmetrical offset connectors resist longitudinal compression while minimizing twisting.

Segmented mandrels create uniform wall thickness, eliminating sinkage and air bubbles during multi-layer construction.

A bifurcated endoprosthesis integrates a contralateral gate to receive an ipsilateral leg directly.

A tubular mesh support structure expands to conform to the lumen without a stent.

A delivery device positions a prosthetic implant using an automatic inversion mechanism triggered by catheter exit length.

Ultra high molecular weight bioabsorbable polymer stents resolve low fracture toughness and radial strength issues in vascular applications.

Ultra-thin heat-set braided stents navigate tortuous vessels while maintaining shape retention and controlling porosity.

A method for in vitro testing inflatable endovascular stent grafts using sterile removable inflation material at pressures higher than ambient pressure.

Segmented expandable frame anchors in the coronary sinus to reshape the mitral annulus without trauma.

Elastic member clamps stent between inner tube and sheath to prevent jumping during insertion.

Segmented tubular sheath splits via activation line to prevent friction-induced drug release during device placement.

Adjustable stent elements modify configuration to accommodate irregular anatomies and reduce migration risks.

Longitudinal compression of nitinol frame regions increases flat plate stiffness, reducing chronic radial forces on cardiac tissue.

Concealed wires in balloon pockets distribute force to dilate calcified lesions while shielding tissue from vascular trauma.

An expandable spherical structure restricts blood flow to aneurysms while preserving normal vessel circulation.

A monorail catheter design incorporates a free lumen for media introduction alongside a guide wire path.

A prosthetic valve skirt uses frangible filaments to break at predetermined thresholds during radial expansion.

An implantable anchor expands radially to engage the vessel wall and collapses for catheter delivery.

Segmented inner and outer layers release distinct therapeutic agents to suppress neovascularization and prevent late thrombosis.

Selective membrane occlusion limits aneurysm neck flow while X-ray-visible materials ensure precise implantation visibility.

A distal tip with a flareable funnel segment maintains secure engagement with the delivery catheter sheath component.

A bifunctional stent uses a breakable cover to constrain a self-expanding trumpet portion until balloon inflation releases it.

Nitric oxide-releasing nanoparticles embedded in a bioresorbable stent inhibit smooth muscle proliferation while promoting endothelial recovery.

Segmented legs and protrusions on a cuff management device constrain the outer cuff to reduce loading forces and prevent snagging.

Acute connection points between loops provide radial strength while preventing buckling and vessel damage during deployment.

A pronged abrasion member creates micro-abrasions in the urothelium to enhance drug uptake.

A transcatheter heart valve uses micro-anchors to engage tissue during balloon expansion, then recoils to a smaller diameter.

Segmented stent graft uses upwardly pointing side arms and a vent tube to maintain renal and spinal perfusion during aneurysm exclusion.

An implantable flow modulator accelerates blood through an upstream component to generate a low pressure region that entrains additional fluid from branch lumens.

Segmented delivery system resolves complexity-speed trade-off by nesting balloon within stent for precise biliary tract placement.

Staggered even-odd stitching and heat riveted filaments secure graft material to stent struts while maintaining radial stiffness.

A porous stent coating provides a large surface area for enhanced drug delivery while maintaining vessel integrity.

A stent-graft device combines self-expanding and balloon-expandable components with anchoring members to secure placement within the abdominal aorta.

Surface texture features manage stress fractures to prevent embolism from coating flaking during radial expansion.

Guide device channels endovascular tools through stent graft sidewalls to create precise branch vessel fenestrations while maintaining continuous blood flow.

Segmentation separates the anchoring stent from the filter, enabling retrieval without removing the permanent anchor.

Radial coating devices surround catheters with measured solution and move axially to prevent premature detachment and ensure uniform active substance delivery.

Ultrasonic vibration prevents coating stagnation in bent stent regions, eliminating webbing defects that cause cytotoxicity and blood clot risks.

Interweaving carbon nanotube strands with textile strands creates a composite fabric that reduces thickness while maintaining mechanical strength.