Stents TRIZ Cases

Pre-formed curved side tubes navigate atypical anatomical relationships to maintain branch vessel patency and blood flow.

A stent inserting device expands a self-expandable stent from the trailing end using a tubular cap and push member.

A bifurcated sheath catheter system stabilizes procedural access using a dedicated stabilization lumen and intermediary wire.

Dual rotary knobs control catheter shaft and inner shaft for precise implant positioning.

Flexible skirt flaps block acid backup while allowing food passage, resolving retention and swallowing trade-offs.

A temporary stent assembly with sealing zones maintains aortic patency during vascular procedures.

An assembly-type device stabilizes a tricuspid valve blocking part using screw-thread engagement and elastic components to counter diaphragm movement.

An intermediate non-helical ring interrupts the repeating helical pattern, resolving expansion force versus placement accuracy contradictions.

An indwelling stent uses alternating first and second pattern annular bodies connected by curved portions to achieve radial compression retractability.

Waisted stents redirect blood flow away from aneurysms, reducing rupture risk without complete occlusion.

Wavy V-shaped stent elements suppress axial shortening during expansion while preventing strut protrusion and tissue damage.

Segmented loading assembly reduces crimping forces by 13% and minimizes distal sheath flaring by 67% to resolve stress and complexity trade-offs.

Protrusions on a shape-memory frame create structural bias to resist radial deformation and prevent invagination in tortuous vasculature.

A delivery system with adjustable positioning elements aligns stent openings to restore blood flow despite catheter control challenges.

A catheter with self-expandable areas transitions between collapsed and expanded states using a removable stretching member.

Thermal fusion of heat-sealable layers replaces adhesives to reduce processing time and improve joint reliability.

Nesting electronic components inside a hollow core wire resolves the contradiction between diagnostic precision and device complexity.

An expandable fixator anchors a guidewire within a blood vessel, eliminating catheter slitting and reducing implantation errors.

Pull-back lines retract ePTFE sleeves post-deployment, preventing branch vessel obstruction while maintaining device expansion.

Pre-tensed circumferential elements prevent radial expansion to resolve diameter variation during inflation.

An independent releasing member separates the stent from the pusher catheter, eliminating guide catheter retraction and reducing operational force.

A nickel-free Ti-Nb-Hf/Zr alloy wire exhibits superelasticity and shape memory effects at body temperature.

An integrated intravascular ultrasound transducer shares a shaft with an ostial stent delivery balloon to provide real-time imaging guidance.

A self-expanding metal stent coated with a continuous SIBS polymeric layer loaded with chemotherapeutic agents for localized tissue delivery.

Dual balloons deploy a segmented stent structure at bifurcation sites, preventing fluid leakage and maintaining radial strength against inward forces.

Carboxylic acid functionalizes medical device surfaces to resolve inconsistent bioactive agent retention and poor adhesion on untreated substrates.

Inflatable occlusion prevents gastro-esophageal reflux and aspiration risk during supine enteral feeding, reducing ventilator-associated pneumonia.

Offset sensor arms hold pressure transducers outside the shunt channel to maintain fluid flow while enabling accurate left atrial pressure monitoring.

A stent design uses non-biodegradable apices and biodegradable struts to maintain expansion force while allowing controlled degradation.

Staged crimping with relaxation periods and baking increases fracture resistance of drug-polymer coatings, preventing cracking during stent delivery.

Alternating arch heights in asymmetrical stent springs prevent kinking and buckling during deployment in bent vessels.

A percutaneous delivery system uses a splay shaft and sheath to constrain and expose atrioventricular heart valve arms for precise positioning.

A separately releasable aortic valve stent uses a guiding device to slide the valve sewing segment relative to the positioning member for controlled deployment.

An expandable balloon enlarges the bile duct channel while a conductive wire incises tissue, reducing bleeding risk during calculus extraction.

Arched beams and mesh structure resolve delivery profile constraints while maintaining sealing capability for durable valve function.

Nested sleeves constrain expandable implants to small diameters, resolving the trade-off between compact delivery and controlled deployment.

A helical stent cable nests a therapeutic filler to resolve the trade-off between mechanical scaffolding strength and drug delivery capacity.

A catheter assembly uses a pressure-activated expandable sheath to form multiple fluid channels while maintaining a low profile.

A sliding radiopaque marker element engages a stent mesh to provide clear fluoroscopic visualization of boundaries during deployment.

A self-expanding stent with a blood-impermeable cover seals an injured vessel while maintaining antegrade flow.

A Y-lock tracheal stent uses a resilient anchor loop to provide secure anchoring while minimizing tissue damage during endoscopic placement.

A porous fluoropolymer delivery device transfers a therapeutic coating directly to tissue upon radial expansion.

A buckle and post member locking mechanism secures a replacement heart valve, reducing invasiveness while maintaining reliable anchoring.

Blood-swelling material in the seal sleeve expands to fill irregular anatomical gaps, reducing para-valve leakage without increasing device bulk.

A canalization device uses shape memory extensions to invert and create tissue channels.

Segmented graft layers bonded through stent openings allow radial and axial movement, reducing manufacturing complexity.

A cardiac valve prosthesis employs a self-expanding armature to anchor securely, resolving the trade-off between fixation strength and blood flow interference.

Angled dual inflatable hollow bodies position stents against vessel walls, preventing protrusion into main branches and reducing operation time.