Stents TRIZ Cases

Radially contractible tine members on a control member enable incremental stent positioning, reducing foreshortening and improving recapture accuracy.

A stent with a movable protruded portion locks onto the sheath ridge to prevent unwanted movement during deployment.

Segmented prosthesis design enables stent graft deployment in short neck aneurysms lacking native anchoring.

Segmented collar mandrels create uniform stent graft pleats, resolving compaction unpredictability and fenestration misalignment.

Movable sections and a tapered cavity reduce stress on stented bioprosthetic heart valves during crimping, preventing biological integrity loss.

A sheath covers the secured device during insertion, preventing distal flaring and balloon piercing while maintaining stable positioning.

Spherical compression reduces delivery device profile length, enabling navigation through tortuous anatomical paths while maintaining fixation strength.

Rotational-to-linear conversion minimizes device shift during intraocular shunt placement to prevent improper positioning.

Segmented docking branches adapt to aortic arch variance, reducing ischemia time and enabling early perfusion.

Dual actuation handle with resheathing lock resolves repositioning trade-offs.

A stent delivery component uses rotatable clamping wings to maintain line contact with a catheter.

Dual PTFE films with distinct resilience fill lumen gaps, preventing inner leakage and reducing wall stimulation.

Thicker struts in the coupling portion withstand high luminal stresses to prevent damage and reduce further medical interventions.

A peripheral vascular filter uses a stretchable spring system to absorb forces applied to the filter wire during deployment.

Compliant double-walled structures conform to irregular aneurysm geometries to prevent endoleaks and graft migration.

Nested transport wires resolve deployment complexity by enabling precise positioning of tubular elements within blood vessels.

An orthogonally delivered transcatheter prosthetic valve expands to a larger diameter at the implantation site.

A glenoid implant uses a set screw mechanism to adjust augment convexity, accommodating varying erosion progressions while minimizing bone stock removal.

Asymmetric link designs distribute compressive loads to reduce foreshortening while maintaining radial stability.

Flap valves on a transcatheter stent manage vena cava blood flow to reduce tricuspid regurgitation without open heart surgery.

An asymmetrical prosthetic valve frame uses a ventricular indentation to avoid obstructing the aortic valve.

Expandable stent grafts couple via outwardly projecting barbs engaging annular meshes for precise endovascular repair.

Replacing trigger wires, a coiled member rotates with a cannula to disengage a stent, lowering deployment force and reducing delivery system profile.

Coaxial sheath system advances along a ureteral stent to capture encrustation or knotting material, resolving blockage without invasive surgery.

Lyophilized powder coating deposits crystalline active agents onto balloon substrates, ensuring 50% transfer efficiency to target tissue sites.

A flexible sleeve transitions with sphincter muscles to anchor an esophageal stent, preventing migration caused by chronic peristaltic action.

Nested endoscope segments and hydraulic pistons enable minimally invasive stent placement, avoiding extensive abdominal surgery risks.

Composite wire structure embeds radiopaque inner core within shape memory alloy outer layer to resolve fluoroscopic visibility and profile trade-offs.

A removable vena cava filter uses arcuate primary struts to expand and engage the vessel wall for secure anchoring.

Helical stent segments enable axial compression and bending through elastic deformation, resolving fatigue failures in superficial femoral arteries.

Segmented delivery catheters with reduced profile sections minimize crimping forces on valve leaflets during precise deployment.

Nested sealing components reduce device profile for percutaneous delivery while maintaining structural integrity during navigation.

Micropatterned stent coatings reduce migration and reocclusion by promoting controlled tissue ingrowth while maintaining luminal patency.

A collapsible sleeve reduces friction between a delivery catheter and introducer sheath for precise medical device deployment.

Integral channels along the balloon surface secure dilation elements without adhesives, eliminating detachment risks and simplifying manufacturing.

An integrated expansion tube joins woven stent layers, eliminating separate connection wires that increase manufacturing complexity.

A separate molding body mounted on a supply cannula creates a lumen for rapid volume equalization, reducing manufacturing complexity of the inflatable stopper.

Sealed containers prevent drying and demixing of liquid active substances, enabling precise dosing during stent application.

A stent graft secures its membrane between ring segment loops and connecting webs to prevent displacement during deployment.

Direct heating elements couple ePTFE layers on a mandrel, eliminating adhesive thickness and reducing thermal strain.

A variably permeable outer sheath prevents premature drug release during tracking, enabling controlled delivery at the treatment site.

A clamshell crimper uses cams and rods to displace elements, compressing expandable medical devices.

A steerable stent delivery shaft uses shape memory polymer actuation bodies to deflect the outer tube for precise navigation.

A modular aortic repair device uses a septum to divide the base member into primary and secondary lumens for directed blood flow.

Segmented lumens in a double-barreled stent graft maintain branch vessel perfusion while eliminating fenestration alignment precision errors.

Selective retaining mechanisms release thrombogenic elements away from the stent surface, preventing aneurysm growth without obstructing blood flow.

Twisted sprung member constricts a sleeve to close a lumen, minimizing recanalization risk.

A 3D gradient magnetic field controls an endorobot to navigate the small intestine, enabling precise stent deployment without mechanical insertion risks.

Corrugated stent grafts resolve stability-flexibility trade-offs by allowing smooth bending without kinking in joint areas.