Stents TRIZ Cases

A prosthesis connecting device uses a leaf spring to accelerate eyelet engagement into receiving recesses.

An expandable macerating element breaks down thrombus via vacuum-driven expansion and contraction, reducing vessel wall injury risk compared to rotating blades.

A stent collapses into a non-convex cross-section to minimize its radial diameter for compact delivery.

Segmented stent design resolves the contradiction between rapid catheter deployment and precise ventricular alignment.

A flexible endoscope pushes a device onto a guide wire projecting into the duodenum, then tugs the wire to pull the device through the papilla.

A magnetic retraction device uses an inflatable member containing a biocompatible agent to manipulate tissue position via external magnetic fields.

A low-profile self-expanding stent delivers sustained blood flow to distal arteries.

Helical trigger wires constrain the prosthesis on an inner cannula to reduce the delivery profile for smaller vascular access.

A self-expanding scaffold delivery system positions therapeutic agents within sinus cavities for sustained release.

A coaxial catheter with a tapered tip and flared port reduces deployment forces during stent placement.

A multifilar catheter shaft uses embedded stiffening wires within an interwoven braid to improve navigation through tortuous vascular passages.

Elastic tubular members allow dynamic repositioning to align stents at vessel intersections, preventing leakage and migration under high blood flow pressure.

Nested balloon catheter uses segmented outer and inner balloons to conform to curved passageways, preventing straightening that causes restenosis.

Segmenting inner and outer balloon layers with different durometer values resolves the trade-off between low compliance and vessel navigation softness.

Fixing units with hook members latch organs to prevent displacement, reducing operation time.

Piezoresistive strain gauges measure catheter deformation to detect electrode tissue contact, resolving low precision in ablation procedures.

Segmented ring structures reduce foreshortening during self-expansion, ensuring accurate placement in varying venous geometries.

Segmented stent design uses dissolvable proximal material to eliminate bladder irritation while maintaining distal retention stability.

An occlusion device estimates fluid pressure curves in the coronary sinus to determine precise timing for intermittent retroperfusion cycles.

A stent delivery system uses a proximal constraining arrangement to hold the implant in a compressed configuration during insertion.

A splittable catheter shaft enables remote uncoupling of a wire guide within the work site using an ultra-short wire technique.

A balloon-expandable bioresorbable stent provides high radial force to maintain vein patency.

Through-holes in planar markers allow plug welding, eliminating complex coil handling and adhesive curing steps.

Tapered implantable lumen filters use variable aperture sizes to trap emboli while maintaining blood flow, avoiding anticoagulant bleeding risks.

An uneven drug-containing layer on a stent framework accelerates endothelial coverage, reducing late thrombosis risk from delayed healing.

Mechanical deburring replaces electrolytic polishing to eliminate material loss and uneven roughness while maintaining stent biodegradability.

A compressible plug device with an integrated prosthetic valve anchors to the tricuspid orifice.

Segmented sheath design and iris-type haemostatic valve resolve withdrawal friction and blood loss across varying device diameters.

Suture tethers on a delivery catheter enable precise mitral valve positioning and recapture, resolving trade-offs between procedure time and device complexity.

Multi-lumen balloon catheter anchors stent grafts via sequential expansion, preventing micro-leakage at aortic bifurcations.

A stent-graft with a permeable mesh layer blocks blood flow into wide-necked aneurysms, reducing rupture risk without open surgery.

Differing apex radii conform the stent to tortuous anatomy while preventing distal migration and reducing artery wall trauma.

Double spiral channels on a biodegradable stent prevent clogging and migration, eliminating removal procedures.

An ultrasonic apparatus mixes liquids in a vibrating tip to deliver controlled sprays.

Segmented thermal control prevents coating damage during stent crimping.

Offset flange portions on the sliding body allow sequential finger repositioning for single-handed deployment of long stents.

Dual-layer medical balloons prevent surface flattening under pressure, ensuring reliable vessel anchoring and procedural stability.

A double-layer blood vessel stent uses a marker member to facilitate accurate positioning during deployment.

A superelastic prosthesis reconfigures venous valve leaflets to restore proper coaptation and blood flow direction.

Dimple tool creates localized depressions in stent graft layers, accommodating axial stretching during crimping without tearing the fabric.

Expandable anchor uses leaflet engagement elements to secure a replacement valve during percutaneous delivery.

A self-expanding anchor device uses a zig-zag mesh structure to stabilize large catheters during insertion.

A progressive display integrates numeric and non-numeric color-coded indicia to visually represent inflation pressurization values on an inflation syringe.

Expandable delivery member positions treatment membrane at urethral stricture site to promote epithelial function and improve long-term effectiveness.

Helical stent elements shorten pitch during expansion to inhibit blood flow in neurovascular aneurysms, resolving low coverage trade-offs.

Heat-sealed thermoplastic film layers form internal compartments that articulate into specific shapes, avoiding complex prestretching fabrication.

An invertible filter captures emboli by everting into a concave shape, reducing dislodgement risk during insertion.

A catheter with a detachable guidewire channel simplifies device placement.

An adjustable ribbon frame implant minimizes cardiac wall contact by resizing its circumference via a gear mechanism after deployment.

Nested stent design with bent silicone portion prevents migration during external forces and enables easy removal.