Stents TRIZ Cases

Bulge portions with greater radii deform locally around branching vessels, reducing type 1 endoleaks without compromising structural rigidity.

Segmented stent bars provide radial anchoring in the mitral annulus, resolving deployment complexity and left ventricular outflow obstruction risks.

Curved strut geometry balances radial strength with longitudinal flexibility, reducing vessel trauma and fracture risk during deployment.

A conveyor system compresses a valve prosthesis using a self-locking recovery sheath to reduce radial force and prevent catheter deformation during loading.

Inverted anchoring hooks on primary struts prevent vessel wall trauma during retrieval while maintaining secure placement.

Segmented stent flanges anchor at vascular ostia to maintain ductus arteriosus patency, reducing reintervention rates caused by device-anatomy mismatch.

Diameter reducing members draw graft portions together to create a lobed profile, resolving birds beaking and endoleak risks in curved anatomy.

A transcatheter valve prosthesis uses a tubular fabric connected to valve leaflets for improved sealing.

Retaining loops adjust endoprosthesis axis inclination relative to the stent, enabling precise positioning in bent blood vessels.

A liquefied drug coating on a balloon surface enhances drug retention and transfer efficiency during intravascular delivery.

A stent graft valve arrangement uses a release wire mechanism to control fluid flow through a side aperture during deployment.

An expandable delivery tip positions electrodes within the pericardial space to modulate autonomic nerve signals.

A folding device compresses heart valve prostheses to resolve bulky holder view obstruction during implantation.

A stent with an erodible binder releases active agent particles to treat diffuse lesions distal to the implantation site.

Nested shafts coupled via a single component achieve simultaneous translation, resolving the trade-off between deployment precision and device complexity.

Expandable body advances along a curved channel to form a bone cavity.

Segmented polymer layers minimize vessel wall intrusion while maintaining deployment flexibility for small vessels.

Segmented stent structures combine degradable midsections with permanent end rings to resolve mechanical strength versus tissue irritation trade-offs.

Solution treatment and age hardening resolve the contradiction between mechanical strength and biocorrosion resistance in bioresorbable bone fixation hardware.

An expandable stent in a tissue pocket urges the Eustachian tube toward closure, reducing discomfort from self-generated sound vibrations.

Segmented stent design with positioning and retaining arches prevents longitudinal displacement of valvular prostheses during heart cycles.

A balloon inflation device uses a tilting control lever to engage and disengage the piston thread.

A catheter with an expandable wall assembly enables radial expansion to accommodate and deploy a replacement aortic valve through minimally invasive access.

A mitral valve delivery device uses a tether control mechanism to expand and align prosthetic anchors during implantation.

A carrier and protective element deliver an expandable tissue substitute into a hollow organ.

Segmented locking legs distribute compression to prevent conduction block during TAVR implantation.

In-situ sensors measure tube dimensions during femtosecond laser cutting, validating quality immediately after the cut.

Modified ring structures and rivet-shaped markers secure radiopaque elements, preventing dislodgment during balloon expansion.

Radial expansion of a drug-coated guidewire releases therapeutic agents locally, preventing restenosis and minimizing systemic side effects.

Mirror-image bifurcated stents and a bridging graft exclude diseased aorta regions while preserving perfusion of critical branch arteries.

Double conical cutouts guide X-ray markers into flush positions via asymmetric tapering, eliminating transitional edges that cause insertion injury.

A stent delivery catheter modifies implant length using tensile or compressive forces applied by an actuator mechanism.

A stent graft uses variable wall thickness to disperse force and prevent wire protrusion during implantation.

Segmented stent sections adapt to bifurcation anatomy by transitioning from non-round unexpanded shapes to round deployed configurations.

A stent with an assistant extension portion featuring a hole at its free end to anchor the device during implantation.

A retractable thin-walled sheath merges with an integral deployment line to enable controlled expansion of self-expanding endoluminal devices.

Magnetic polymer grafts stabilize endografts against migration while distributing stress uniformly to prevent endoleak and reduce rupture risk.

Segmented terminal loops and folded tails on the reinforcing ring allow comprehensive electropolishing without component contact.

Asymmetric strengthening reduces balloon wall thickness while maintaining circumferential strength, improving trackability through vasculature.

A tubular graft with a valve arrangement equalizes pressure between the vessel and aneurysmal sac.

A shockwave balloon catheter generates mechanical waves to fracture calcified lesions.

An automated pump and pressure sensor control balloon inflation to maintain local drug concentration while reducing systemic side effects.

A gradually-expandable stent enlarges its central valve area to accommodate pediatric heart growth.

A convertible nephroureteral catheter integrates an internal stent within a detachable outer tube for immediate urinary diversion.

Segmented stoppers prevent closed web graft slippage while preserving tip capture engagement with endmost crowns.

Solvent extraction from the stent lumen increases drug delivery quantity while eliminating polymer coating adverse reactions.

Pre-cultured smooth muscle cell sheets applied to electrospun scaffolds resolve uniformity issues in small-diameter vessel seeding.

Differentiated stent structures balance radial strength and flexibility to reduce trauma while preventing restenosis.

A gear and pulley mechanism drives bidirectional outer catheter movement, resolving manual retraction errors that cause premature stent deployment.