Stents TRIZ Cases

A controlled release mechanism positions an ocular implant within the eye.

A medical delivery tool uses a helical track to guide a helix fixation element, ensuring stable initial engagement with myocardial tissue.

Optimized woven fabric base balances thickness and tensile strength to enable insertion through smaller catheters while preventing fluid leakage.

A vascular implant uses a radially projecting membrane layer to enhance sealing between the graft and vessel wall.

PLLA stent with 100 μm struts uses controlled deformation to resolve the trade-off between arterial injury and radial strength.

A multi-stage balloon catheter anchors in non-tapered vessel sections using a pressure-actuated valve to sequence inflation.

Magnesium alloy stent with poly-L-lactide coating releases dual drugs to address plaque buildup and artery constriction while reducing repeat interventions.

Heating the compressed stent-graft assembly sinters a monolithic layer to prevent tissue ingrowth and ensure long-term patency.

An absorbable vascular filter captures emboli and biodegrades via hydrolysis.

A single intravascular device merges a self-expanding stentriever with a semi-compliant balloon to capture clots and dilate vessels.

A steerable branch prosthesis flexibly orients between retrograde and antegrade configurations via a balloon-assisted deployment system.

A flexible stent maintains nasopharynx-to-hypopharynx patency while reducing patient discomfort from invasive palatal removal.

An expansion ring with bowed legs reduces internal friction in braided stents, enabling reliable deployment in neurovascular vessels.

A C-shaped endoluminal stent with a posterior opening provides structural support to the trachea.

A high-density lattice stent reconstructs the arterial wall by redirecting blood flow and supporting endothelial cell growth.

Aligned internal tunnels enable precise branch vessel access, reducing surgical complexity in thoraco-abdominal aneurysm repair.

Variable retraction rate prevents distal slippage during self-expanding stent deployment, ensuring precise placement accuracy.

A self-expanding prosthesis with retractable anchoring members secures transected body vessels through radial expansion.

Segmented stent sections provide varying crush resistance to prevent foreshortening and vessel damage in May-Thurner syndrome.

An extra-urethral implant mechanically displaces prostatic tissue to enlarge the urethral lumen.

An enlarged central region exerts higher expansion forces on the stent center, maintaining a cylindrical frame and preventing flared ends that damage tissue.

A flexible implant holder applies a stiffness gradient from high ends to a low middle section, ensuring maximum deformation at the center of tubular implants.

A biocompatible tube creates a channel from vascular to avascular areas.

Variable pore density in a bioerodible stent resolves the contradiction between structural strength and temporary support duration.

Angular indicia on the holder member enable precise valve orientation without direct contact, preventing device damage during crimping.

A medical balloon uses controlled polymer orientation to prevent circumferential rupture.

An interventional element uses electrical signals to adhere thrombi, preventing detachment during retrieval through tortuous anatomy.

Segmented struts minimize foreign material contact to reduce neointimal hyperplasia while maintaining adequate lumen patency.

A vascular endograft incorporates an open tunnel to maintain fluid communication with adjacent branch vessels.

A delivery apparatus loads stents with therapeutic agents using reservoirs and suction mechanisms.

Segmented Nitinol sealing gaskets with framing brackets anchor graft legs to resist migration while preserving renal blood flow.

Segmented wire mesh structures reduce gastric volume and slow emptying while preventing device migration.

A metallic film endoprosthesis with fenestrations covered by a degradable polymer layer.

Nested membranes with differing pressure thresholds contain coolant, preventing body leakage if the inner layer ruptures.

Physical vapor deposition joins a microporous film to a scaffold, resolving surface heterogeneity that causes thrombogenicity and restenosis.

Disc-shaped mesh occlusion devices reduce recurrence by preventing coil compaction and eliminating antiplatelet therapy needs.

Curved elongate members in fenestrated stent grafts maintain venous confluence patency while reducing reintervention rates for central venous obstruction.

Segmented pulleys enable slow positioning and fast deployment, resolving the trade-off between stent-graft precision and release speed.

High-velocity fluid jets disrupt target tissue while nested apertures shield lumen walls from collateral damage.

Polymer sheaths cushion scaffold struts during crimping, preventing structural damage and maintaining high retention force for reliable delivery.

Segmented stent design uses dynamic connector struts to resolve structural support versus removal ease contradictions.

A tapered cylindrical extraction device captures stent graft prongs within a hollow bore, preventing vessel wall damage during removal.

A hollow distal tube with a compressible portion moves between compressed and elongated conditions to deploy implantable medical devices.

A multifilament artificial blood vessel uses localized covering parts to balance structural integrity and flexibility.

Flexible uncovered stent tail accommodates iliac artery convolutions, preventing kinks that restrict blood flow in bifurcated grafts.

Multi-dimensional imaging analysis generates ranked implantation paths, resolving inaccuracies from two-dimensional human interpretation.

Photochemical etching forms localized surface patterns that enhance biocompatibility and reduce restenosis risk by accelerating endothelial cell integration.

A transcatheter delivery shaft integrates a cutting assembly to sever tension members after stent expansion.