Stents TRIZ Cases

Radiopaque markers guide fenestration placement against branch vessels, while reinforcement protects graft edges and supports sealing.

A flexible multilayer coating limits rapid magnesium degradation, preserves stent integrity during expansion, and sustains anti-restenosis drug release.

A selectively engaging clutch preserves mechanical advantage while resisting backspin and reducing gear jamming during prosthesis advancement.

An unfolding stent transfers electrode heat across curved biliary lesions while sensing temperature to limit unwanted thermal ablation.

A coiled single-wire implant expands after insertion to apply continuous radial pressure, widening the urethra while reducing bladder irritation.

One catheter combines RF incision, balloon dilation, and heated-fluid deployment of a shape-memory polymer stent for pseudocyst drainage.

A pivot, tether, and actuation line steer implantable devices through tortuous vessels for precise orientation and deployment.

A basket-shaped filter over an aortic or pulmonary valve captures emboli released during mitral or tricuspid valve treatment.

Axially offset balloon and stent components reduce overlap while protruding features support localized drug delivery and controlled deployment.

A telescoping inner-and-outer sheath constrains a vascular connector, visually marks position, and supports deployment without cardiopulmonary bypass.

Curved runners shift from linear to bowed during catheter deployment, pushing the cuff against the native annulus to limit paravalvular leakage.

Combining SDHI, dithiocarbamate, and QoI or ergosterol inhibitors broadens disease control while supporting crop greening and yield.

Moving the sheath distally avoids retraction through curved anatomy, supporting stable and accurate prosthetic mitral valve deployment.

See how a double-body tricuspid prosthesis uses an atrial flange and ventricular anchors to secure placement and follow native annulus motion.

Heat treatment shape-sets soft degradable threads into a woven implant, enabling compression, deployment, and occlusion.

Selective ducts open during repair to admit expandable stent grafts into branch vessels while maintaining blood flow.

A rotatable nosecone and bearing transmit torque through the shaft, while rack-driven pull-wire steering improves catheter stability and control.

An expandable frame creates a toroidal space between atrial supports and ventricular anchors to secure the native valve and reduce regurgitation.

An interwoven retrieval suture lets the stent collapse and reposition while reducing gastric leakage and preserving natural pyloric function.

Annular cinching reduces a valve’s delivery circumference, then self-expansion restores diameter for sealing in the native annulus.

Longitudinal pre-stretch and nanofibrillar reinforcement help grafts accommodate limb flexion without excessive tortuosity or disturbed flow.

Controlled-porosity fiber and ePTFE layers support endothelial cell growth while limiting cellular and fluid migration in medical appliances.

An inflatable balloon creates a pilot lumen for direct access, reducing TIPS catheter exchanges and supporting stent delivery.

A curved obturator with distal and side holes redirects the guidewire into the SFA, reducing correction time, radiation, and injury risk.

A tapered clot mobilizer uses flexible middle struts to improve navigation, preserve pushability, and reduce vessel damage risk.

This vascular prosthesis uses elastic flap access to accommodate side branches while preserving material integrity and blood-tight sealing.

This case uses elastic interlocking between the pull rod and handle housing to prevent control-wire slippage after prosthesis placement.

Independent double-layer stent bodies support uniform expansion, shape followability, and delivery through narrow catheters.

A sheathed expandable device holds and releases a therapeutic patch for endoscopic treatment of gastrointestinal wounds.

This case embeds a radiopaque coil in the balloon catheter inner shaft for fluoroscopic visibility and kink resistance.

Staged catheter deployment anchors prosthetic mitral valves while reducing invasiveness.

A flexible intramural orienting device uses radiopaque markers and subintimal navigation to bypass CTOs and re-enter the true lumen.

A control unit uses device location to block biopsy gun triggers until safe positioning, reducing unintended patient injury.

A segmented stent liner uses preformed disruption zones so removal devices can engage and loosen implanted stents without harming tissue.

A collapsible frame, silicone cover, and deformable sleeve protect leaflets during crimping for smaller-profile percutaneous delivery.

This case uses distal pulling at fixed arm points to clamp native leaflets, supporting valve function and reducing regurgitation.

An eversible cover cushions clot retrieval, limiting fragment dislodgment and shearing forces in tortuous vessels.

A docking coil anchors in wide-neck aneurysms, restricting flow at the neck while preserving adjacent arteries without anticoagulants.

A vascular stent carries electrodes near brain tissue for neural recording and stimulation, reducing invasiveness and surgical risk.

A compressed prosthetic valve expands at the native valve, using arms and flanges to improve anchoring and closure.

Vascular stent electrodes enable neural recording with less invasive implantation.

This case shows how dilation changes a rigid, non-circular support into a circular seat for a new prosthetic heart valve.

A tapered, blunt-edged device compresses the stent graft and releases prongs, reducing friction and vessel wall damage during removal.

Apertures, grooves, bearings, and a locking cap secure flexible shafts for percutaneous heart valve deployment through tortuous anatomy.

Chord-recruiting arms support valve coaptation and help reduce atrioventricular regurgitation.

A flexible braided valve stop preserves valve position on the balloon and supports atraumatic navigation through curved aortic pathways.

Expandable sealing structures and self-rolling adjustment help a transcaval shunt adapt to changing anatomy and reduce EVAR endoleaks.

Shape-memory and superelastic regions enable repeated in vivo shunt flow adjustment.

Corresponding asymmetric catheter and wire shapes preserve stent orientation through tortuous vessels and align fenestrations.

Asymmetric catheter and wire cross-sections inhibit rotation, helping fenestrated stents align with branch vessels during deployment.