Stents TRIZ Cases

Bifurcated hemostasis valve lumens with angled transitions prevent clogging during large clot removal procedures.

Segmented catheter balloons use varying wrap angles to create distensible and non-distensible areas, preventing length change during inflation.

A catheter system uses a thermally changeable drug coating activated by an energy delivery surface to release therapeutic agents directly onto body tissue.

An expandable internal lumen in a perfusion balloon catheter maintains continuous blood flow during inflation, preventing ischemia and organ damage.

A bioabsorbable polymeric stent undergoes sterilization using supercritical carbon dioxide at controlled low temperatures.

A prosthetic heart valve delivery system loads the device with an inverted circumferential flange to enable controlled supra-annular unsheathing.

An energy-activated bonding layer anchors a covered stent to the lumen wall, preventing device migration and aneurysm rupture.

A multi-balloon catheter delivers multiple intraluminal devices through a single insertion.

Nested steering and delivery catheters enable precise mitral valve deployment while reducing overall system complexity.

Rotating the control knob drives the carriage assembly to deploy the valve, reducing invasiveness and recovery time.

An interventional element applies direct current to positively charge a stent, attracting negatively charged clot components through electrostatic forces.

Segmentation separates the valve and conduit, allowing independent storage to prevent sealant degradation during liquid sterilization.

A bioresorbable outer body simplifies insertion of a tubular stent.

External longitudinal paths drain divergent duct fluids while circumferential silicon prevents tissue protrusion without sutures.

A tapered compression member radially compresses prosthetic heart valves for delivery device insertion.

An expandable guide catheter extension forms a funnel-like distal opening to improve retrograde wire capture, reducing reverse CART procedure duration.

Porous multilayer prosthesis preserves branch vessel perfusion while excluding aneurysmal sac from circulation.

A dual-channel catheter integrates a fluid balloon and stent delivery channel to accelerate device placement.

Segmented pump design eliminates friction and hemolysis by suspending the rotor via magnetic fields within the left ventricle.

Variable curvature stent limbs distribute strain evenly to enhance compressibility and fatigue life.

A laminated outer sheath with a polymeric first layer and reinforcement layer bonded by an adhesive glue layer.

A support frame uses shape memory alloys to anchor a sleeve in the gastrointestinal tract.

Molding inner and outer layers into cavities seals the core layer at machined edges, preventing microbial growth and biofilm formation on tracheal tubes.

Chromatin-binding coatings on retrieval devices anchor thrombi via adsorption, preventing fragmentation and arterial damage during extraction.

Supramolecular polymer-colloidal hydrogel fibers reinforce a stent graft, preventing aneurysmal expansion and reducing rupture risk.

A flexible tubular medical device conforms to the digestive tract wall while allowing fluid permeation through its porous structure.

A flushable loading base with a recessed seating surface and fluid ports collapses prosthetic heart valves while preventing damage from crimping stress.

A delivery device grips a tubular implant using radial force from a coupler to enable controlled advancement and retraction.

Segmented helical tubes prevent excessive radial collapse by forcing axial concertina motion during partial vacuum extraction.

Undulating lateral bases overlap graft material to reinforce scallop edges, maintaining branch vessel blood flow while preserving aneurysm sealing integrity.

Heat treatment dissolves tungsten-rich precipitates in cobalt-chromium alloys to achieve a homogeneous microstructure.

A curved delivery catheter shaft uses a sliding straightening member to minimize force on the septum wall and prevent arrhythmic conditions.

Expandable structures within a delivery catheter deploy an implant to trigger a baroreflex response for blood pressure reduction.

An inflatable membrane expands to release the retaining member, ensuring controlled deployment and reducing procedural failure risks.

An expandable extracellular matrix closure member seals puncture sites via radial expansion.

Perfluorochemical flushing displaces trapped air in stent-grafts, reducing air embolism risk during thoracic endovascular aortic repair.

An all-in-one system creates vascular holes and rapidly seals them using a nested tube design.

A mobile external coupling with shape memory material aligns stent-grafts to branch vessels, preventing blood leakage through fenestrations.

Composite endoprosthesis resolves flexibility versus tensile strength contradiction using deposited metallic film with embedded nickel-titanium filaments.

Wing members with hooks embed into the cardiac wall, securing the expandable ring to reshape the valve annulus without open-heart surgery.

A mobile external coupling extends outward from a tubular stent-graft body to align with branch vessels, preventing blood leakage at thoracic aneurysm sites.

Ultra-short pulse laser ablation eliminates thermal damage during polymeric stent manufacturing, preserving molecular weight and mechanical strength.

A helical reinforcement element with bends inhibits graft creep rupture while maintaining longitudinal flexibility.

Segmented sealing component encircles the frame to provide a secure seal with native anatomy, minimizing paravalvular leakage.

Polymer carrier coating embeds radiopaque material to eliminate sharp metal edges that perforate balloons during dilation.

A bifurcation aneurysm insertion system uses separate sleeves to release distal implant portions independently through proximal retraction.

Dissolvable agent bags and barbs embed in a conduit wall to minimize systemic exposure and prevent restenosis.