Stents TRIZ Cases

Internal threads secure telescopic vascular implants without stiffeners or larger catheters.

Porous canal supports reduce eye pressure while preserving natural fluid flow.

Flexible sleeves and steering lines enable controlled bending and precise positioning of expandable implants in curved vessels.

A preset channel constrains larger wire segments while guiding the smaller segment for safe adjustment and delivery withdrawal.

A wire-loop delivery mechanism supports controlled stent graft constriction, alignment, and repositioning before final deployment.

A self-expanding lattice and porous fabric cover help seal aneurysms, contain coils, and preserve blood flow through side branches.

A woven flat-wire coupling releases self-expanding valve frames predictably, helping limit vessel trauma and placement errors.

A retained expandable member conforms catheters to curved vessels while deploying an occlusive barrier without added sheaths.

A valve support and movable sheath maintain the collapsed valve during delivery, enabling precise deployment, repositioning, or retrieval.

A thin polymer membrane contains SMP foam while supporting rapid clotting and tissue ingrowth for LAA occlusion.

This case uses a swallowable, self-sealing intragastric balloon to control inflation timing and avoid complex gastric insertion procedures.

Tapered, compressible stent barrels support percutaneous mitral valve replacement while accommodating adjacent heart structures.

A modular bifurcated stent-graft uses nested branch extensions to treat iliac aneurysms across varied vessel diameters.

An electromagnetic tip guides a camera-equipped capsule through narrowed vessels for treatment while reducing dye-related risks.

A catheter uses elastic hooks and integrated anchors to simplify artificial chordae implantation while limiting invasive steps.

Adjustable tension and expandable members stabilize catheters near the aortic arch for precise valve delivery.

Arranged radiopaque, support, and composite filaments improve stent imaging while preserving radial pressure and vessel apposition.

Cylindrical implants use enlarged ends and protrusions to limit migration and rotation without anchoring to tissue.

Removable anti-coiling material exposes retention coils for trimming, enabling patient-specific length without multiple stent sizes.

A segmented biliary stent uses proximal cage filtration and distal mesh drainage to maintain patency despite food exposure.

A concentric delivery tube with imaging, staged retraction, and detents supports implant positioning while limiting premature deployment.

Dual crosslinking improves valve stability and reduces calcification.

A curved-conical stent uses Bernoulli-driven flow to drain subarachnoid blood, prevent rebleeding, and preserve circulation.

Platinum-tungsten alloys strengthen intravascular implants while limiting MRI susceptibility.

A longer saddle and wider flange portions anchor an esophageal stent across a stricture while limiting perforation and stenosis risks.

A layered catheter balances flexibility and resistance for prosthesis deployment and recapture.

A catheter-based line system keeps implantable devices controlled for accurate positioning, recapture, and repositioning.

Deploy biliary stents without guidewire manipulation using lateral tube release.

Retention-unit stents anchor coiled annuloplasty rings in valve tissue, addressing fixation strength, implantation time, and trauma.

A rotating slider and screw gear move the central hub linearly, retracting the graft cover and branched lumen together.

Opposing screw-driven sliding members coordinate tube motion to offset expansion-induced shortening and position the implant accurately.

Hinged clips and a sliding collar lock self-expanding valves in position, helping prevent misalignment and prosthesis damage during loading.

A flexible wireframe device enables blood flow diversion through a catheter, reducing pain and healing time after open-heart surgery.

Explore a stent delivery system using spiral-cut flex zones to navigate tortuous vessels and support repositioning before deployment.

This case uses coated outward wire segments and uncoated inward segments to protect coating stability during stent expansion.

This case uses a bioabsorbable stent with two external spiral channels to maintain duct flow and reduce migration, clogging, and exchanges.

This case uses heat-set anchor hooks and compressible valve cells to secure subannular tissue without oversized delivery catheters.

This case uses a detachable position-limiting wire to bend a guiding catheter for precise, reconfigurable implant anchoring.

Catch mechanisms move filaments in controlled radial steps, enabling high wire-count tubular braids without tension-induced breakage.

Perforated outer collagen enables micro-vessel ingrowth and nitric oxide production, helping limit neointimal hyperplasia.

A stent with circular ends and an oval medial segment cyclically reshapes the vessel, restoring compliance and supporting perfusion.

A fiber layer strengthens sutured locations while a lower-permeability layer helps prevent blood leakage into lesion sites.

A steerable catheter, variable-stiffness introducer, and balloon support accurate valve placement while reducing surgical trauma.

A variable-wall balloon uses a thinner valve-receiving center and thicker ends to reduce crimp profile and maintain axial stability.

Retractable catheter limbs provide tactile valve-annulus alignment without complex imaging.

Expanded fluoropolymer membranes with serpentine fibrils resolve foreshortening in medical balloons by maintaining longitudinal length during radial expansion.

A biodegradable medical device surrounded by a slower-degrading containment layer prevents harmful degradation products from injuring host tissue.

A triboelectric nano-generator stent generates voltage from blood flow to monitor intravascular conditions.

A shape memory alloy wire structure unfolds in the urethra to apply ischemic pressure on tissue.

Segmented helical stent design prevents migration and reduces tissue trauma by separating retention from anchoring functions.