Stents TRIZ Cases

A tubular lattice structure uses a projection-recess interlock to transmit forces between the device and transport wire.

Flexible fixation unit anchors the device to irregular annular tissue, allowing precise positioning without interfering with normal leaflet movement.

A dual-chamber bladder applies controlled negative pressure to joint defects, accelerating tissue growth through fluid dynamics.

Retrograde flow catheter manages blood circulation at the carotid bifurcation to prevent emboli release into the cerebral vasculature.

An arcuate anchor balloon assembly positions a self-expanding stent at a bifurcation site without obstructing blood flow or contrast media passage.

Automated viewing system defines Regions of Interest around expanded balloons to enhance stent visibility during angiograms.

Infusion catheter delivers stabilization compound to diseased aortic tissue, reducing hemodynamic pressure and preventing wall rupture.

Expansion rings impart outward radial force to braided stents, preventing migration in neurovascular procedures.

Asymmetric middle member channels establish a preferential bending axis that aligns branch stents with arteries, preventing occlusions.

Through-holes in stent struts distribute therapeutic agents via diffusion, preventing hotspot formation and improving concentration uniformity.

Functional coatings on stents and balloons form molecular bonds to enhance retention force, avoiding coating damage from high-pressure crimping.

Removing a sacrificial stent blank creates a continuous lumen for controlled drug release, resolving low radial strength in bioabsorbable devices.

Antimicrobial stent supports replacement heart valve leaflets while delivering agents to treat endocarditis and prevent paravalvular leaks.

A biodegradable vascular graft uses an electrospun polyester core bonded by a poly(lactide) copolymer to an outer sheath.

Intralumenal stent graft devices feature integrated anchor members that reconfigure via frame eversion to provide resilient fixation within the gastrointestinal tract.

Annular electrodes on a balloon catheter measure circumferential strain, tissue impedance, and redox potential.

A mechanical runner system advances coronary stents within arteries.

A temperature-sensitive lipid coating resolves the contradiction between static surface stability and dynamic drug release effectiveness.

A tunable coating on a drug delivery balloon uses excipients with varying dissolution rates to control therapeutic agent release kinetics.

Segmented sheaths retract sequentially to prevent axial elongation and twisting, ensuring accurate placement within body vessels.

Atomic layer deposition applies an anti-sticking coating to medical stents, preventing self-adhesion that compromises shape retention and causes re-stenosis.

Longitudinal splits in the delivery sheath allow retraction over access ports, preventing branch vessel occlusion during fenestrated stent deployment.

Segmented connection groups resolve the contradiction between configurational stability and twisting flexibility in vascular stents.

Angularly offset undulating ring stents inhibit rotation and tilting during deployment while preserving helical fluid flow characteristics.

Coupled expandable prostheses and a sealing sleeve join transected vessel portions, reducing repair time and clot formation risk.

Bare stents anchor the device while suture loops enable staged expansion, preventing migration and coronary artery blockage during Type-A dissection repair.

A distal moving capsule advances to deploy a prosthetic heart valve and mates with an introducer shaft.

A medical device anchor uses a coil and barb to grip an elongate member via friction fit.

An outwardly tapering inflatable bone tamp applies targeted lifting force to vertebral endplates during minimally invasive kyphoplasty procedures.

A composite weave graft uses low denier yarns and corrugated sections to enable radial elongation and flexible navigation through narrow vasculature.

Drawn fill tube wires embed radiopaque cores within flexible shape memory alloy jackets to enhance stent visualization.

Nested concentric catheters use an inflatable balloon to isolate sterile internal components from bodily fluids during natural orifice procedures.

Segmented temporary biodegradable and chronic tissue growth mechanisms secure implants while eliminating permanent erosion hazards.

A vascular prosthesis transition section with lattice-like reinforcing elements enables precise contralateral leg anchoring.

Segmented balloons restrict blood flow while lateral apertures distribute drugs homogeneously, preventing systemic toxicity and vessel injury.

Holding filament decouples stent release from guide catheter movement, enabling repositioning without complex manipulation.

Stent with atraumatic spacer members extending beyond the tubular body ends to prevent direct tissue contact.

Inserting a filament knot through a radial opening prevents entrapment and allows clean uncoupling by reversing conventional outside-to-inside routing.

A bioresorbable magnesium-lithium-yttrium alloy stent with polymer connectors provides radial strength for vascular support.

Dynamic valve shifts configuration based on pressure differential to prevent stomach acid reflux while maintaining smooth food passage through the esophagus.

Titanium-doped tetrahedral amorphous carbon films reduce exposure defects and cleaning frequency in liquid immersion lithography systems.

A shock absorbing aneurysm device uses a leaf-spring mechanism to dampen framework movement.

A shape memory micropost array mechanically captures tissue through dynamic deformation.

A guide catheter system uses an inflatable balloon to expand constricted sinus passageways.

Reinforcing layers and strengthening rods constrain a medical balloon, preventing overexpansion and rupture while resisting abrasion during insertion.

Segmented leaflet design prevents retrograde flow to lower renal venous pressure, addressing cardio-renal syndrome complications.