Stents TRIZ Cases

A dual-catheter platform independently expands main- and side-branch stents to improve access during bifurcation treatment.

This case shows how a movable balloon shaft and rigid inner guide remodel sinus drainage pathways for improved ventilation.

An axially movable nosecone supports less invasive heart valve delivery.

An expandable coil and resonant circuit follow IVC motion to estimate fluid status and heart rate without distorting the vessel wall.

Parallel convex struts and electrostatic coating support long-term emboli filtration, with a removable filter for retrieval and replacement.

A deformable applicator guides a nitinol stent through angled Eustachian tubes.

This case shows how segmented polymeric webs connect adjacent stent elements to resist torsional, bending, and axial forces.

Segmented stent rings and axial members create secure fluidic connections while simplifying endoscopic anastomosis.

A compressible mitral valve prosthesis uses a self-expanding stent, cuff, and tethers for minimally invasive anchoring.

An annular bias keeps the flexible tractor tube open, enabling inversion and reducing jamming in tortuous vessels.

Fixation members and coaptation structures support mitral repair, while pressure sensors monitor cardiac and device function.

A retractable sleeve and retention features preserve implant control while clinicians verify position before expansion.

A metal mesh scaffold reinforces the proximal flange and lumen while softer polymer keeps the distal flange flexible for placement.

A self-expanding braided stent supports cerebral venous sinuses while allowing repositioning, retrieval, and removal during delivery.

This endoluminal stent uses an elastic bare wave ring to flip its flange after release, improving wall contact and resisting dislodgment.

A segmented, partly attached cover helps divert blood from aneurysms while preserving flexibility for tortuous vessel deployment.

Fenestrations, occlusions, and internal fixing elements support branch revascularization while limiting device profile for smaller arteries.

A pivot arm pinches the actuation member above a force threshold, controlling prosthetic valve expansion and protecting the native annulus.

A tandem endograft uses staged modular delivery, inflatable channels, and conformable extensions to anchor and seal complex aneurysm repairs.

Embedded stent pressure and temperature sensors provide location-specific restenosis monitoring without repeated invasive imaging.

Controlled hydrogel crosslinking changes lumen diameter over time to balance blood flow and limit thrombosis as patients grow.

Integrated magnetoelastic mesh converts flow and pressure changes into signals for continuous, accurate restenosis monitoring.

Multiple independently inflatable catheter segments accommodate non-uniform body-lumen diameters for more precise treatment delivery.

A catheter delivery system uses rotary sheath control, tactile feedback, and alignment indicators for stable valve deployment.

A dual-catheter bifurcation stent uses side holes and relative sliding to preserve branch access and support localized drug delivery.

Mechanical expansion reduces lumen occlusion and enables controlled valve repositioning.

An expandable frame and membrane partition the ventricle, addressing reduced elastic recoil to improve filling and ejection efficiency.

A zig-zag frame and silicone skirt protect leaflets during crimping while reducing the catheter delivery profile.

This case shows how modular rings and trigger wires adapt one delivery handle for cuffs and multiple stent graft types.

Two angled conductor loops use distinct resonant frequencies to reduce orientation dependence and improve pressure wave signal readout.

A shape-memory implant uses radial incisions and median-lobe anchoring to address BPH and bladder neck obstruction minimally invasively.

Variable cells and ultra-thin struts limit distal overexpansion while improving balloon-expandable stent delivery in intracranial arteries.

Energy-triggered folding enables precise local drug release inside blood vessels.

This case shows how segmented actuation wires and bio-absorbable tethers steer expandable devices perpendicular to vessel curvature.

A nested cobalt-chromium assist stent reinforces a deformed nickel-titanium valve frame to secure the skirt and prevent leaks.

A radially expandable frame uses retention members to guide placement, secure the valve, and support recapture during implantation.

This case uses a crimped, dehydrated valve that is rehydrated in situ, shortening preparation and limiting aldehyde exposure.

This case controls phosgene addition and temperature to limit phase domains and improve copolymer mechanics for medical devices.

Radio-opaque markers and tactile control support accurate stent valve deployment.

A locking channel guides the prosthesis control wire to prevent tangling and jamming.

A non-circular catheter lumen and oriented pusher wire guide differential-porosity stents through tortuous intracranial vessels.

Segmented valve cells and fluoroscopic markers improve precise transcatheter placement.

Independent commissure posts and buffering layers secure valve components while balancing collapse flexibility, durability, and friction.

Integrated side branches formed from one graft sheet support stable insertion while reducing material buildup and blood-flow turbulence.

An implantable framework combines pressure sensing, trend analysis, and calibration to correct drift in left atrial monitoring.

Rotary jet spinning deposits polymer fibers on medical devices, reducing labor-intensive suturing and improving coating consistency.

A pin-and-slot connector permits limited rotation and axial movement, helping delivery catheters navigate tortuous vasculature.

This case shows how a flexible stent strut and rotatable tether support self-anchoring valve deployment through a catheter.

A self-expandable mesh delivery device improves stent positioning in tortuous cerebral vessels.

A denser inner mesh and looser outer mesh trap liquid embolic in aneurysms and AVMs, supporting controlled occlusion.