Stents TRIZ Cases

Nested inner and outer shafts enable precise bifurcated stent deployment, resolving positioning accuracy issues in vessels with differing diameters.

Pre-welded closed-loop filaments enable automated braiding, resolving welding complexity for fine wires.

Luminescent shaft markings allow clinicians to determine catheter position externally, reducing radiation exposure during endovascular procedures.

A braided stent translates between elongated and deployed configurations to expand a heart valve annulus without requiring rapid pacing.

A frangible occlusion device differentiates flow paths using pressure thresholds to maintain aneurysm sealing while preserving perforator vessel patency.

A stent with a flexible membrane and internal thread constricts vessel lumens for precise blood flow control.

Segmented inflatable portions maintain side branch registration during expansion, preventing plaque shifting and over-stretching.

Liquid precursor transforms into solid material within an endograft to conform to complex aneurysm geometries and prevent migration.

Segmented Nitinol stents use asymmetric diameters and flared openings to prevent migration at airway bifurcations.

Interwoven filaments with flattened portions form weld joints, reducing radial thickness while maintaining structural integrity.

Elastic members fold cutting balloon blades into pleats to prevent tissue incision during withdrawal.

A pressure attenuator controls balloon inflation rate via a fluid accumulator, preventing strut damage during stent deployment.

A pivot thumbwheel mechanism locks forward rotation to maintain tension in the retractable sheath, ensuring precise stent positioning during deployment.

Distal eyelets prevent conical expansion and kinking while a decoupling region ensures even radial force distribution.

Polymer coating directs drug diffusion into vascular tissue via lipophilic pathways, reducing systemic exposure.

A drug-coated balloon delivers high-density paclitaxel to vessel walls via optimized surface adhesion.

Radiopaque wires extend from the stent frame to the central axis, enhancing visibility during thrombectomy procedures.

Separable stent segments linked by a coupling structure resolve incomplete apposition in irregular vessels while reducing procedure time.

A pivotally connected lever mechanism disengages trigger wires in stent graft introducers, reducing operator strain during deployment.

Replacing metal with composite polymers resolves the trade-off between mechanical strength and biocompatibility while enabling flexible vascular support.

SAM containment member prevents systolic anterior motion of the native anterior leaflet, eliminating left ventricular outflow tract obstruction.

Separate lumens and elastic regulating balloons manage blood flow to prevent reperfusion injury.

Resilient prongs expand automatically upon sheath retraction to encircle and secure foreign objects, minimizing trauma during removal from body lumens.

Degradable metallic coatings reduce radial strength over time, allowing vessel remodeling while preventing re-occlusion.

A protection tool with protrusions prevents tissue pinching between stent struts during compression.

Segmented pusher shafts resolve placement precision versus tissue damage trade-offs in vascular treatments.

A bioabsorbable platform device supports vessel curvature during arteriovenous fistula creation.

Haptic feedback signals optimal filter placement in the aortic arch, resolving sealing reliability versus positioning difficulty.

A self-centering inferior vena cava filter uses a support portion that curls inwardly to maintain point contact with the blood vessel wall.

Deformable members constrain polymeric tube expansion to resolve non-uniform properties and dimensional inconsistencies during manufacturing.

Segmented flexible stent flaps prevent plaque particle detachment into the bloodstream while allowing targeted blood flow to branching vessels.

Shear-thinning fluid stabilizes the rotatable optical core to eliminate guidewire dependency during insertion.

A central venous catheter incorporates a heat exchange element to circulate temperature-controlled fluid for patient thermal management.

A compressible tube holds a flexible medical implant during insertion through tissue and releases it once positioned.

A prosthetic heart valve delivery device uses a carriage assembly and split nut mechanism to control sheath movement.

A stent graft uses a polymer band to attach the stent to the tubular graft material.

A penetration catheter forms vascular connections between the femoral artery and vein to deploy a stent-graft.

Thermal resistance members melt retaining polymers to selectively expand the distal stent end, preventing proximal deployment errors and aneurysm rupture risks.

Reflective markers on implantable devices enable external detection of device location and expansion status, preventing migration complications.

Segmented longitudinal spars with spring-like elements deliver medication while maintaining mucociliary flow.

A drug eluting folded stent uses U-shaped struts with an internal recess to hold the medication coating.

Eccentric anchor stents secure self-expanding shunts, reducing recovery time while maintaining vascular connection reliability.

Integrating a radiopaque coil into the stent frame eliminates separate markers, reducing device complexity while maintaining imaging visibility.

A self-adjusting stent assembly expands across a 5.5 mm to 9 mm diameter range using a knitted jacket structure.

Expandable TFE copolymers with high comonomer content enable strong porous articles via controlled stretching, overcoming extrudability and strength trade-offs.

Alternating strut patterns in the vessel-engaging member prevent coil herniation into parent vessels while maintaining trackability.

A tapered textile thrombectomy device adapts to varying vessel diameters and clot lengths through a flexible delivery system.

An embolic coil incorporates a stretch-resistant member that isolates axial tension from the implant while enabling rapid thermal detachment of the tether.

Segmented stent grafts maintain renal perfusion while excluding pararenal aneurysms, preventing lumbar artery obstruction.