Stents TRIZ Cases

A double-walled filling structure prevents internal lumen deformation and resists pulsatile pressure creep through a composite elastic-inelastic design.

Rotor-driven tensioning members manage implant expansion while steering mechanisms navigate tortuous anatomical pathways to improve control concordance.

A reconfigurable stent-graft delivery system uses a multi-lumen catheter to stage main vessel deployment and convert to a sheath for branch access.

Opposing support members hold the bile outflow port in a linear shape, preventing duodenal backflow while reducing overall stent length.

Segmented stent fronds bridge bifurcations to cover side branch origins, reducing restenosis risk without compromising main vessel radial strength.

A crimping device uses protruding elements to compress medical devices while protecting internal layers from mechanical damage.

Tactile indicators on the coupling member signal deployment progress through tension changes, reducing reliance on continuous imaging.

Segmented wavy-line annular bodies reduce element gaps during expansion to prevent tissue growth while maintaining axial pliability.

Helically wrapped films with arcuate fibrils slide relative to adjacent fibrils, maintaining flexibility while covering frame elements with diverse geometries.

Flexible mandrels enable precise electrospun fiber matrix deposition to prevent intimal hyperplasia and improve long-term patency.

A vascular remodeling device uses segmented strut sections to anchor within blood vessels and support aneurysm filling materials.

Alternating self-expanding and balloon-expandable wireforms conform to irregular vessel contours, reducing dislodgement risks in aneurysm treatment.

Axial actuator expands anchor against tissue while locking mechanism stabilizes implant during deployment.

Reverse or forward filling followed by solvent extraction increases drug payload and elution control without polymer coatings.

A bifurcated catheter design integrates a safety balloon and burstable element to manage retention pressure.

Selective core member removal from struts creates lumens for high-capacity drug delivery while retaining structural integrity at crowns.

An elongate slot in the inner tubular member allows guide wire passage while reducing retraction resistance and preventing pinching during stent expansion.

A self-expanding tricuspid valve frame uses an atrial dome and ventricular struts to anchor a neo-prosthetic valve within the heart.

An optical shape sensing guidewire measures endograft position and orientation within blood vessels.

Polymer occlusion units paired with an elastic locking mechanism compensate for low contraction force, ensuring stable heart defect closure.

A self-expanding stent frame with varying radial stiffness along its circumference.

Acid-neutralizing cationic species in biodegradable polymers prevent inflammatory responses and protect sensitive agents from acidic degradation byproducts.

Segmented support structure provides enhanced radial compressive resistance to resolve chronic outward force issues in implantable prosthetic valves.

A spring-tensioned anti-backlash mechanism compensates for pusher elongation during outer catheter retraction, enabling precise stent resheathing.

Segmented prosthetic assemblies use nested branch structures and dynamic expansion to seal aneurysms without compromising branch vessel patency.

Platinum group metal additions to cobalt-chromium stents increase X-ray absorption, resolving fluoroscopic visibility constraints.

A magnetic stent system uses repulsive forces to maintain device position within the gastrointestinal tract.

Nested concentric tubes with distal retaining mechanisms enable accurate placement of long endoprostheses while reducing radial force.

A pre-compressed elastic thin strip releases stored potential energy to detach an implant, reducing procedure time and improving positioning accuracy.

A stent delivery system uses a locking mechanism to secure the implant during transport and enable controlled expansion at the target site.

Segmented lumens enable uniform balloon inflation, preventing asymmetrical waves that cause stent misplacement.

Axial overlap of helical stent struts connected by biodegradable links prevents radial deformation and maintains lumen diameter under external force.

Segmented ring design reduces fracture rates while maintaining radial strength to minimize late lumen loss in peripheral vessels.

Segmented stents in the superior and inferior vena cavae prevent retrograde blood flow into the right atrium, resolving fixation risks.

An auxiliary elongated element and core wire configuration apply focused force to crack difficult lesions at lower inflation pressures.

A medical direct current generator uses a two-phase process to fragment metallic implants via controlled melting and electric arc discharge.

Dual-channel geometry enables self-expansion over sidewalls, reducing vessel wall trauma during clot retrieval.

Pre-forming standby wire into a helix before weaving prevents damage and maintains elastic force.

Inverting an inner mesh segment over an outer layer anchors the device against migration while enabling post-implantation adjustment.

Segmented anchor barbs expand beyond the device profile to provide secure fixation without aggressive over-expansion that damages tissue.

Paired magnetic compression devices self-assemble to join tissues via minimally invasive guide elements and elongated manipulators.

Segmented capsule telescopes through curved paths, ensuring stable implant positioning without damaging vessel walls.

Heat-set braided strands enable flexible deployment in tortuous vessels, resolving wall approximation issues while preserving branch vessel perfusion.

A stent jacket uses specific fiber diameters to form a stable endothelial layer.

A stent graft delivery system uses a suture-based pulling arrangement to actively curve the proximal end of the tubular body.

A steerable fiber assembly manipulates expandable implants through vascular pathways using integrated steering lines and flexible sleeves.

Nested inner and outer shafts enable precise stent placement by preventing deployment jump, resolving accuracy versus control trade-offs.

A multi-layered medical balloon uses fiber reinforcement to maintain shape and burst pressure resistance for safer angioplasty procedures.

Tapered support arms on a mesh stent adapt to irregular tricuspid anatomy, preventing native distortion and peri-prosthetic leaks.