Stents TRIZ Cases

A shape memory alloy interatrial shunt enables reversible orifice adjustment through thermal phase transitions.

Rectangular stent struts anchor dual-layer fabric to reduce paravalvular leakage and improve alignment precision.

Green picosecond laser machining minimizes thermal damage in bioabsorbable stents, preserving mechanical properties for reliable implant performance.

A self-expanding nitinol device compacts emboli against vessel walls to restore blood flow in acute stroke treatment.

A compliant balloon connected to a closed fluid chamber acts as a passive pump, reducing blood pressure required to eject volume from stiffened vessels.

An intrajoint balloon catheter replaces external traction to maintain hip distraction, reducing tissue trauma and improving surgical access.

Liquid mixtures fill catheter balloon folds to prevent premature detachment of active ingredients.

Nested catheter design reduces crossing profile and prevents dislodgement during complex bifurcation stenting procedures.

A flexible annular band with barbs anchors atherosclerotic plaque against vessel walls to maintain lumen patency.

A stent delivery device uses a pistol handle and roller clutch to convert trigger rotation into controlled sheath retraction.

Deformable engagement members prevent relative torque between the sheath and pusher rod, ensuring accurate implant placement.

A hollow stent wire defines a drug-filled lumen using a radiopaque inner lining, resolving polymer coating flaking and poor visibility issues.

Flexible delivery systems with pre-formed spiral support members align curved distal portions to vessel geometry, reducing intraluminal puncture forces.

Floating yarn loops in woven graft bodies receive expandable stents circumferentially to secure attachment without suturing.

Fluid-linked balloons let clinicians verify internal inflation accuracy without removing the device, resolving cleaning access constraints.

Balloon segmentation creates an isolated vessel segment to concentrate therapeutic agents, reducing systemic toxicity and restenosis risks.

Coextruded non-compliant balloon layers delaminate at predetermined pressure to create independent layer movement.

Grooved holding elements paired with a retractable release tube enable complete implant expansion by overcoming retention complexity.

Segmented shafts and polymer jackets seal slots to prevent clot formation while ensuring rapid deflation.

Tissue-engaging clips couple a prosthetic valve support to native leaflets, preserving check valve functionality during minimally invasive implantation.

Segmented platforms with radiopaque markers enable precise sequential tack deployment, resolving the trade-off between placement accuracy and device complexity.

Convex struts in an aortic arch device divert emboli away from cerebral arteries, reducing ischemic stroke risk without increasing bleeding hazards.

A vascular graft integrates a kink resisting element within its fiber matrix to maintain structural integrity during implantation.

Undulating strut patterns with varying widths reduce peak tensile strains in the superficial femoral artery, preventing fracture under complex loading.

A centralized ordering system manages stent graft design parameters and 3D verification via a remote data processor.

An integrated engaging portion on the guide catheter head secures the stent, enabling precise placement adjustments before final deployment.

Dynamic valve opens under peristaltic force while maintaining closure against gastric pressure to prevent acid reflux.

A delivery wire uses bumps to apply radial force, expanding a braided stent that fails to fully open due to low opening forces.

Segmented catheter joints provide torsional rigidity between digits, enabling precise implant orientation without bending the device during delivery.

A mechanical screw mechanism advances a coronary stent delivery catheter with high precision.

Angled top struts allow modified Z stents to interdigitate, preventing opposite vein jailing while maintaining radial strength.

Segmented stent geometry with acute angles allows controlled elongation, reducing sheath retraction force and protecting the valve assembly during crimping.

A self-expanding stent inverts its body to overlap axial edges, reducing insertion profile while maintaining structural support.

Segmenting the core into a stiff proximal wire and flexible distal tube prevents compression, ensuring navigability through tortuous vasculature.

Segmented marking coils secured by polymer layers prevent dislodgment from blood flow during thrombectomy procedures.

Longitudinal protrusions reinforce the catheter tube as it inverts, reducing friction and preventing collapse during deep insertion.

A magnetic bladder drainage tube uses an external magnet to open the sphincter and a spring anchor to close it.

A bifurcated catheter stabilizes sheaths against uncontrolled prolapse in tortuous aortic arches, reducing arterial wall trauma.

Rhenium-containing alloys enhance ductility and tensile strength, reducing recoil during crimping for smaller vessel insertion.

Segmented helical struts with ductile hinges resolve buckling risks while maintaining vessel patency.

An expandable stent uses ductile hinges to form a parallelogram structure that improves spatial distribution of beneficial agents.

Polygonal shaft geometry positions folded balloon turns on flat sides, suppressing radial protrusion and reducing outer diameter for improved deliverability.

A biodegradable stent coating uses a caprolactone-glycolide terpolymer to maintain mechanical strength during manufacturing.

Protective covering prevents premature expansion and assists refolding, reducing active substance loss.

Securing a zigzagging balloon to a matching frame member eliminates relative movement during inflation, resolving stability issues without adding complex links.

Slidably secured expansion ring imparts outward radial force to braided stent body, reducing vessel trauma during neurovascular deployment.

A nested delivery device holds compressed intraluminal devices between annular pusher bands for sequential deployment.

A stent delivery outer sheath uses a heat shrink resistant support member to capture the pull member.

A stent delivery catheter uses a shape-memory component to adjust its transverse dimension for smooth insertion and retraction.