Stents TRIZ Cases

Segmented tubular conduits and an expandable nitinol stent graft create a kink-resistant artificial blood flow path that bypasses central venous occlusions.

Segmenting delivery into endovascular and surgical phases reduces ischemic risk during aortic aneurysm treatment by enabling off-pump procedures.

High-speed rotation reduces droplet size to eliminate webbing and ensure uniform stent coverage.

Expandable anchor biases electrodes against vessel walls to resolve mapping adaptability versus chronic retention trade-offs.

A prosthetic line pull assembly uses a hand-gripable slider and release ring to transfer pulling forces through a wire.

Dual motors drive a single cable via pulleys to retract the sheath, ensuring reliable deployment even if one unit fails.

A joining liner with a crumpled state connects an endovascular stent graft gate to an implant, preventing leakage at vessel bifurcations.

A stent graft device features a lateral outflow port for valve fixation and a sealing skirt to prevent backflow.

Thermal bonding of a skived distal portion to a thermoplastic sleeve prevents wall thinning at guidewire port joints.

A water-soluble protective coating covers sharp implantable frame projections to prevent vessel damage during delivery.

A stent-graft delivery system uses a retractable sheath and cap to constrain the proximal end, enabling precise branch vessel alignment.

Serpentine wires loop over a receiver to compress stent grafts, preventing branch artery occlusion during deployment.

Segmented struts and curved crowns distribute stress to achieve 90% crush recovery without fracture in peripheral arteries.

Axially spaced stent arms protrude radially upon expansion, securing anchorage and reducing migration risk without complex deployment mechanisms.

An endoluminal device uses a switchback filament face to restrict flow into the aneurysm while maintaining normal vessel perfusion.

Constraining specific stents prevents kinking and buckling when deploying grafts in curved aortas.

A textile body implant fabrication method replaces fiber segments to combine distinct material properties.

Modifying acute angles at cell corners prevents asymmetric expansion near bifurcations, reducing breakage risk during deployment.

Segmented medical balloon with concave side regions improves folding characteristics for atherotome integration while maintaining low profile delivery.

Selective outer layer melting prevents inner layer delamination during heat-welding, ensuring structural integrity and easy core removal.

A diameter control weave stabilizes warp yarns during variable diameter weaving to maintain tight dimensional tolerances.

A vessel implant uses differential inlet and outlet cross-sectional areas to accelerate blood flow and generate therapeutic underpressure.

A branched stent graft uses a support stent with reduced radial force to enhance conformability to tortuous anatomy without obstructing small vessels.

A graft structure uses openings filled with remodelable extracellular matrix to anchor biological tissue through cellular invasion.

A pull wire with a concave cross section provides columnar support and controlled tension during vascular stent deployment.

A non-compliant medical balloon employs a braided fabric sleeve to maintain uniform dimensions and burst strength when opening tough body tissues.

Sequential expansion of stent flanges anchors the device in the stomach first, resolving visibility issues when positioning the distal flange inside the cyst.

An invertible polymeric esophageal valve prevents reflux and resolves blockage risks by temporarily opening during vomiting.

An integrated pacemaker combines pulse generation, electrodes, and leads into one unit to simplify implantation and reduce foreign body sensation.

A personalized self-expanding prosthesis system uses shape memory materials to orient and anchor within patient anatomy.

Segmented design applies enhanced radial strength only at dissection sites, reducing vascular damage and deployment complexity.

Nested folded subsections in a triple-collar stent-graft thicken the graft material, improving sealing capability while maintaining a low crossing profile.

Energy-mediated poration enables uniform toxin distribution in the nasal cavity, preventing accidental exposure to non-target tissues.

Dual expandable balloons stabilize and seal a vascular prosthesis, reducing bleeding risks during minimally invasive bypass surgery.

A stent graft constraining patch defines an internal passageway to guide medical instruments through the tubular body.

A tubular prosthesis uses controlled ingrowth features to abut lumen walls and prevent migration.

Mandrel tapered portion seals guidewire exit port to eliminate manual sealing steps and reduce contamination risk during coaxial catheter flushing.

A duodenum built-in jejunum cannula releasing system delivers a stent via nested tubular components.

A bifurcated stent graft uses a pre-routed crossover guidewire to enable reliable contralateral access during endovascular deployment.

Heat-shrinking UHMWPE fiber fabric assembly at controlled temperatures eliminates wrinkles that increase thrombosis risk while maintaining mechanical strength.

Thermal activation of shape-memory alloy struts generates radial force to resist elastic recoil and accommodate vessel growth in pediatric patients.

Microporous structures manage tissue ingrowth while reducing granulation and fluid stagnation in lumens.

A cannula with a resorbable stenosis gradually increases venous pressure to arterial levels.

Segmented pusher shafts with circumferentially weakened release points resolve placement precision versus rapid deployment trade-offs.

A knot-based tension thread system folds and unfolds medical implants via a releasing string, eliminating complex mechanisms that increase failure risk.

Vacuum deposition integrates circuitry into stents, eliminating welding and epoxy adhesives for reliable wireless communication.

Nested barb positioning protects sharp tips during delivery, enabling precise repositioning and secure fixation upon deployment.

Shared linear portions merge adjacent wavy annular members, eliminating connection points that cause strain concentration in curved blood vessels.

Local delivery of therapeutic agents via perfusion catheter reduces microvascular obstruction and systemic toxicity.