Stents TRIZ Cases

Segmented ring structures prevent migration and encrustation while maintaining lumen patency.

Segmented stent springs with pointed arches form angled side branches, reducing material accumulation at branching regions to maintain blood flow.

Integrated thermoplastic anchors bond stent frames to graft substrates, eliminating external hooks and sutures to reduce manufacturing complexity.

Varying apex curvature radii reduce invasiveness on graft materials and vessel walls, increasing radial force and sealing efficacy.

An inflatable occluder scaffold expands via fluid injection to conform to heart tissue anatomy.

A tubular sheath envelops a folded self-expanding stent from inside and outside to maintain the compact profile during trans-aortic delivery.

Refrigerated elastomeric coating prevents wrinkles on expanding stents, reducing thrombosis risk in small vessels.

Endoscope-guided balloon catheter positions expansion body within stenosed natural ostium, eliminating X-ray exposure and fluoroscopic apparatus requirements.

Nanoscale surface structures modify protein adsorption to reduce immune responses and prevent hepatic clearance of delivered agents.

A porous graft flow diversion device uses a zig-zag stent frame to occlude intracranial aneurysms while preserving side branch patency.

Coils around fenestrations generate magnetic fields to guide guidewires, reducing radiation exposure during implantation.

In-situ forming polymer foams seal false lumens by reacting with water to generate gas, resolving inadequate intimal tear sealing in stent grafts.

Ratchet devices in dual conveyance sub-systems prevent uncontrolled tube displacement during precise valve placement.

Segmented compression portions reduce the maximum width of a deflated balloon below the urethra inner diameter, preventing lumen wall interference.

A biodegradable endovascular implant reduces radial strength to limit vessel damage during expansion.

Segmented anchor balloons maintain blood flow and provide radiographic markers to resolve placement accuracy conflicts at bifurcation sites.

Segmented stent design employs perpendicular hooking structures to prevent migration during hollow organ deformation.

Glycosaminoglycan coatings stabilize conformational structure of immobilized biologically active entities, preventing degradation from sterilization stress.

Varying braid angles across stent zones tailor compressibility and rigidity, reducing trauma while maintaining structural integrity.

Leaflet engagement elements on an expandable anchor actively foreshorten and lock to prevent distal migration and paravalvular leaks.

Expandable stability tube reduces frictional resistance between delivery sheath and prosthesis, ensuring accurate positioning.

Compliant channels in flexible membranes enable radial fluid flow between conduits and side branches while inhibiting tissue ingrowth.

A cobalt-rich oxidized coating masks magnetic properties on metallic medical substrates to reduce imaging artifacts.

Radial compression of a shape memory stent reduces friction during catheter navigation, enabling accurate deployment in tortuous vasculature.

Removable external channels on the endoluminal prosthesis maintain coronary artery perfusion, preventing temporary blockage during aortic valve repair.

An asymmetric lumen stent design with a tapered segment and unequal branch windows reduces blood flow pressure in side branches to prevent vessel occlusion.

Variable diameter gears in the stent delivery system adjust outer tube speed for precise positioning.

Retracting a stent proximal to an access site seals the opening via a constrainment member, preventing fluid leakage.

An arc generator inside a dilating balloon creates mechanical shock waves that fracture calcified lesions without high pressure.

A percutaneous valve uses a nested leaflet transition member to compress within the frame lumen for low profile delivery.

Segmented stent walls resolve the contradiction between radial stiffness and flexibility, improving venous patency in May-Thurner syndrome.

Cellular transmitter integrated into orthopaedic prostheses transmits implant sensor data to remote controllers.

Nested retractable sheath with spring-loaded clamp adjusts balloon length while maintaining watertight seal against fluid entry.

A vascular implant packaging system uses a holder with recesses to maintain the device's secondary shape during storage and deployment.

A delivery device pusher incorporates a slot to house suture clasps, reducing the overall profile of the implantable stent deployment system.

External stent compresses venous valve leaflets to restore competency without invasive vein removal.

A stent incorporates a restraining pipe near the strut joining portion to limit relative movement, reducing bending fatigue at the connection.

Curved transition surfaces route tension members to prevent wear, while locking mechanisms ensure uniform crimping of the stent frame.

Nested slides and stop pins enforce a predetermined sequence for stent graft release, reducing operator error during endovascular procedures.

Radiopaque markers and a pre-formed helical support member align the stent graft in curved aortas, reducing vessel puncture risk during deployment.

Segmented control mechanisms enable precise stent graft placement via independent rotary and linear sheath retraction.

A guide wire holder uses a hook and sheath groove to capture a wire for insertion.

A hollow stent wire embeds a radiopaque core within its lumen to enable controlled drug elution through structural openings.

A robotic catheter system uses a flexible track with reflective sections and an optical position detector to determine the distal end location.

An electroactive polymer coating on a spiral cut hypotube dynamically adjusts pitch and compressive strength to balance flexibility and structural integrity.

A hybrid silver and carbon ink strain sensor maintains consistent electric resistance during balloon catheter expansion cycles.

A steerable delivery shaft adjusts the spatial orientation of a cardiac valve holder to align with the implantation site.

A fluid diversion device uses a rotating occlusion member to selectively block tubes for prosthetic heart valve deployment.

A nitinol esophageal stent distributes transverse forces via a zigzag scaffold, resisting infolding caused by peristaltic motion.

An annuloplasty device uses shape memory anchors to attach directly to heart valve tissue without sutures.