Stents TRIZ Cases

A silicone stent integrates a self-expanding mesh frame to enable flexible bronchoscope implantation.

An extruded PGS tube mixed with thermoset filler and overlaid with an overbraid resists thrombus formation in small-diameter vessels.

Gradient coated stent prevents burst release by varying drug concentration across coating thickness, ensuring long-term effective therapy.

A retention wire restrains a stent on a balloon catheter, preventing longitudinal movement that damages drug coatings and biologic materials.

Pressure changes move drives relative to each other, enabling precise longitudinal stent placement without obstructing direct visualization.

Lock elements engage first members to hold the expandable anchor in a deployed configuration, preventing migration and ensuring stable placement.

Helical wraps convert axial force into radial expansion, reducing removal tension and maintaining device profile.

Nitinol substrate with undercut projections hooks onto mating pieces, resolving the trade-off between fastening strength and biocompatibility.

Flat sheath films surround a stent assembly during radial compression, eliminating manual tubular handling and reducing coating damage.

A bloused stent-graft section uses pressure differentials to self-align with branch vessels, creating a pocket for precise puncture device placement.

A catheter balloon coating method uses a volume measuring device to dispense precise amounts of active agents onto the surface.

Nested telescoping architecture minimizes patient trauma during percutaneous deployment of replacement heart valves.

Z-shaped connectors join stent ringlets to maintain radial stiffness while preventing axial length loss and recoiling.

Replacing surgical trauma with mechanical dilation, the device expands the prostatic urethra lumen by compressing prostate lobes without thermal injury.

A splittable delivery sheath uses a longitudinal split to facilitate extraction of implanted cardiac leads.

A vascular implant uses a separation zone to retain occlusion coils within an aneurysm sac.

Heparin-coated yarns in a woven stent graft reduce thrombosis risk and inflammation.

Radiopaque markers enable accurate stent graft alignment, reducing deployment complexity in tortuous anatomy.

A control tether manages stent graft expansion via tension, preventing unintended orientation shifts caused by blood flow during deployment.

A drug-coated endovascular device uses a layered core to transfer anti-contractile agents directly to the arterial wall.

Dual-balloon catheter concentrates oncolytic viruses at tumors, bypassing endothelial barriers to maximize penetration while preventing systemic toxicity.

A stent-graft employs a tightenable suture loop to dynamically adjust curvature, ensuring reliable sealing in curved lumens with short necks.

External battery powers stent through leads to maintain negative charge, eliminating internal power source complexity and surgical replacement needs.

Cannula coiled members loop stents for rotation disengagement, eliminating trigger wire crimping damage.

Micropatterned polymeric coating with protrusions anchors stents to vessel walls, preventing migration without causing reocclusion.

A top-cap assembly transitions from open to closed configuration using a nested retriever body to secure the proximal endograft during device withdrawal.

Implantable wireless flow sensors monitor hemodynamic changes to reduce aneurysm recurrence risks.

Discrete reservoirs in ceramic oxide coatings prevent polymer deformation during deployment while controlling drug release.

An evertable sleeve retracts independently to shield intraluminal medical devices during deployment.

Slitting and bending a single tube creates a reliable capture structure that avoids complex wire connections while maintaining structural integrity.

A catheter tip assembly with a tapered profile and flared inner catheter distal end.

Partitioning tubular graft material creates a bidirectional internal branch, resolving unidirectional cannulation constraints in stent grafts.

Pre-assembled constraint arrangements reduce stent graft diameter, preventing branch artery occlusion during precise positioning.

A catheter handle integrates fixed and slidable tubes with inverse conical bores to create a continuous internal passage for medical guidewires.

Segmented balloon system with independent pressure sensors compensates for asymmetric forces to ensure uniform expansion of prosthetic heart valves.

Expandable balloon catheter stretches papillary muscle tissue to elevate chordae tendinae and improve mitral valve leaflet coaptation.

A removable implant stabilizes the urethral stump during radical prostatectomy to facilitate secure bladder neck attachment.

A retrievable stent uses a staggered strut configuration to fold along a longitudinal axis for compact retrieval.

A ball-slide attachment mechanism secures an operator-manipulatable tether to a prosthetic heart valve stent for precise catheter loading and translation.

Segmented catheter handle knobs manipulate delivery shafts to control prosthetic valve deployment, reducing placement errors and body channel trauma.

Segmented stent grafts use inflatable fill structures to adapt to varying aortic diameters and prevent endoleaks.

A delivery mechanism features a compressible annular bushing and a pre-shaped distal tip that assumes a curved geometry.

Digital image processing calculates groove centers to align loading outlets, resolving low speed and accuracy issues in stent manufacturing.

Pre-configured grafts with integrated stents eliminate harvesting time while sealing defects to stop fluid leakage.

Supporting wires constrain the proximal end against the arterial wall, preventing retroflex rotation and bird's beak formation in tortuous aortas.

Segmented expandable frame with dynamic strut geometry navigates curved vessels without kinking, preserving branch vessel perfusion.

An expandable support device anchors a catheter within a blood vessel to maintain stable fluid flow rates during percutaneous procedures.

Merging the inner compression member and guide channel into one piece eliminates mechanical joints, preventing kinking or buckling in tortuous vessel pathways.

A nested tube implant delivery device integrates air evacuation channels within the structure to simplify operation.