Stents TRIZ Cases

Textured inner sheath surfaces minimize deflection and improve placement accuracy by reducing friction between the medical device and the outer sheath.

Longitudinally movable cover segments deliver distinct therapeutic agents via a single expandable member.

Opposing the balloon folding direction to the helical strut extends expansion force alignment, preventing twist and re-coiling during deployment.

Varying strut lengths across stent segments balances radial strength with flexibility, reducing abrupt diameter transitions during venous deployment.

Segmented stents with varied diameters create pressure gradients in carotid arteries to modulate blood flow and relieve pulsatile tinnitus.

A self-expandable member uses segmented cell structures to transition from a compact delivery profile to a radially expanded position within vasculature.

Segmented pull ring profiles reduce transition length to prevent canting and leak paths while maintaining structural integrity under tensile stress.

An expandable flap inverts via a pusher wire to capture tilted IVC filters, then everts to release them, resolving unstable anchoring issues.

Segmented delivery system uses intermediary clevis pin to reduce invasiveness while maintaining reliable deployment accuracy.

Super-elastic stent rings expand radially to match pediatric heart growth, eliminating multiple invasive surgeries.

An elastic tubular stent body with helically wound strands changes diameter via a tensioning mechanism, enabling repositioning of fixed-diameter implants.

Swatches and buffering elements distribute mechanical loads to prevent stress concentration at leaflet attachment regions.

Expandable tubular sheath with tapered distal end introduces treatment members into body lumens for material interaction.

Integrated imaging guidance enables precise 3D visualization during percutaneous heart valve delivery, resolving placement contradictions.

A recoverable valve stent uses an elastic diaphragm to enable bidirectional placement and recovery.

An inflatable balloon at the distal end of a medical catheter expands to reduce puncture risk while maintaining trackability through tortuous anatomy.

Segmented inflatable ribs prevent slippage and heart damage during valve opening.

Segmented catheter navigation resolves tortuous vessel trade-offs by maintaining blood flow during precise stent deployment.

A bioabsorbable stent degrades over time to restore natural vessel compliance and vasomotion.

A composite distal sheath with a sandwiched tubular supporting member resolves flexibility and columnar strength trade-offs to prevent paravalvular leaks.

Segmented struts and locking string-like members provide radial pressure resistance for thin-fiber synthetic resin stents during deployment.

An interior ridge in the midshaft abuts a core wire shoulder to transfer axial force, resolving pushability and distal flexibility trade-offs.

Adhesive-covered balloon expands to close vein junctions, preventing thrombosis and embolism risks.

Tapered fenestrated stent directs antegrade blood flow through mid-portion openings to both iliac arteries.

Two-stage delivery system deploys a sleeve member followed by a metallic stent to enable precise placement within body lumens.

A balloon uses radiopaque adhesive between layers to provide clear edge imaging without contrast media.

Flared tubular graft with anchoring cuff reduces surgical time and bleeding during end-to-side anastomosis.

Segmented stiffening members in a multi-lumen catheter shaft improve trackability while maintaining structural integrity at the side aperture.

A pusher guide wire uses a tapered coil body to transmit rotating force and push stents distally.

A bifurcated graft deployment catheter uses a main branch restraint and release wire to position vascular prostheses within arteries.

Pre-coated polymeric substrates support adhered human arterial endothelial cells to reduce leukocyte adhesion and improve long-term patency rates.

A convertible nephroureteral catheter uses a decoupling mechanism to separate the proximal portion from the implanted distal stent.

A biodegradable polymeric stent swells in moist environments to secure ostial patency without permanent implantation.

A balloon sleeve with a weakened area expands from the center outward, preventing foreshortening during deployment.

Cooling nitinol stents to a martensitic phase allows compression and coating without damaging the drug layer, preserving structural integrity.

Inert gas jacket prevents surface contamination during stent compression.

Replace fluoroscopy with optical shape sensing to reduce radiation dose while maintaining positioning accuracy.

Thermal balloon pressurization maintains uniform fold arrangement and increases retention force, preventing structural failure during deployment.

A biocompatible patch guides cellular ingrowth to form a neovalve, eliminating the need for open surgery.

Segmented balloon segments apply sequential non-uniform pressures to crack hardened vascular lesions, overcoming the uniform pressure limits of single balloons.

A circumferential trigger wire system encircles an endoluminal prosthesis to reduce retraction force and prevent entanglement during deployment.

Clamping mechanism controls tension threads to fold implants, eliminating complex threading systems and enabling simple thread extraction.

A control handle uses independent sliding mechanisms to position inner and outer clamp arms for precise tissue engagement.

Dual coil portions on a guide wire enable stent pushing and retraction without impairing the flexibility needed for meandering blood vessels.

C-shaped stent sections abut via ball and socket joints to eliminate material from the main vessel flow path, reducing turbulence and thrombosis risk.

A biliary stent unit uses a flexible soft tube to protect the pulling string and reduce internal stimulus.

A weeping balloon catheter uses an annular space between inner and outer balloons to distribute therapeutic fluid through perforations.

Curved orienting member rotates to match vessel anatomy, eliminating wire wrapping risks during bifurcation navigation.

Controller anticipates road hazards via V2V communication to proactively connect the AWD system, resolving fuel efficiency versus traction trade-offs.

Rhombic wire stent resolves aortic arch positioning challenges by combining structural strength with high flexibility to prevent kinking during deployment.