Stents TRIZ Cases

Modular stent uses S-shaped connections between circumferential elements to enable high flexibility and radial strength.

Shape memory alloy interatrial shunt adjusts cross-sectional area in vivo to resolve over-shunting risks and improve blood flow regulation.

An expandable medical device embeds microparticles in a polymeric network to retain agents during collapse and release them upon expansion.

Bead-bonded stent channels urine through interstitial spaces while biodegrading to reduce rigidity and patient discomfort.

U-shaped reinforcements at commissure regions improve durability without increasing material volume or crimp profile.

Segmented connectors anchor a shape-memory stent across the pyloric sphincter, reducing gastric emptying without surgical invasiveness.

Cathodic particles in biocorrodible magnesium alloys reduce anodic dissolution to maintain mechanical integrity for three to six months.

A reconstrainable stent delivery system uses a slider and pusher mechanism to manage axial loads during deployment.

Alternating annular portions with varying mountain densities allow the stent to navigate curved lumens without significant length reduction during deployment.

Segmented stent design delivers sustained drug payloads to reduce patient side effects from urinary frequency.

A dual-spiral flow diverter device isolates aneurysm necks from blood flow using a single filament with memory shape.

Segmented support structure with undulating base resolves sealing reliability trade-offs while enabling unobstructed branch vessel blood flow.

A dual balloon catheter uses an inner occlusion balloon and an outer aperture-equipped balloon to deliver therapeutic agents directly into a body vessel.

A rigid mandrel and deformable stopping pipe provide internal support for an endovascular stent, preventing deformation caused by uneven crimping forces.

A self-closing perfusion branch system uses biodegradable attachments to automatically seal after surgery.

Segmented liners protect fenestration rings from wear while maintaining blood flow through vascular stent grafts.

A cryotherapy balloon catheter maintains stable internal pressure during treatment phases using controlled fluid flow and exhaust.

Asymmetric stent linkages expand differentially to match curved vessel geometry, reducing fatigue under continuous bending loads.

Aligning struts with the helical fin angle prevents radial fractures while maintaining flexibility and promoting desirable fluid flow patterns.

A pre-shaped radiopaque wire guides an endovascular implant into position within a vessel branch using fluoroscopic visualization.

A stent delivery system integrates a conductive tube and variable electrocautery tip for precise tissue treatment.

Segmenting the appendage with a nested conduit prevents clot formation while preserving compliance chamber function.

Segmented hybrid stents maintain vessel patency while minimizing foreshortening during deployment.

Bent fibrils in a tapered ePTFE graft provide rapid recovery, resolving flexibility versus complexity trade-offs.

A robotic surgical system measures output shaft torque to determine catheter pullwire tension for precise articulation.

Nested core assembly recaptures partially expanded stents to prevent vessel abrasion during tortuous navigation.

An internal heating shaft absorbs laser light to conduct heat for welding, preventing balloon damage from direct exposure and uneven surfaces.

Spring tongues clamp the membrane between resilient connecting webs, eliminating tissue irritation from protruding hooks while maintaining structural integrity.

Second release assembly restrains stent proximal end via control guidewire, enabling accurate deployment and reducing open surgery needs.

A transcatheter stent-valve employs a flexible seal supported by collapsible elements to reduce para-valve leakage without increasing bulk.

A medical device uses sequential sensor short circuits to emit distinct electromagnetic fields for wireless parameter identification.

A stent loading device maintains moisture in biological materials during controlled collapsing, preventing structural strain and dehydration.

Pull wires release tension to expand the stent, solving repositioning difficulties and uneven deployment.

Expanded anchoring balloon creates tension region on stent coating membrane to prevent sinking during fenestration.

A delivery mechanism with a compressible bushing and pre-shaped tip enables curved geometry after deployment.

Rotating a hollow helical strand retracts a proximal sheath on a cardiac valve delivery catheter, enabling precise minimally invasive placement.

A sinusoidal stitch path with variable width segments couples a stent to a tubular graft.

Expandable balloon catheter isolates target vessels to prevent agent dilution, enabling localized delivery of stem cells into surrounding cardiac tissue.

Longitudinal channels in the introducer sheath isolate stiff barbs to prevent snagging and ensure reliable anchoring.

Merging two shafts into one reduces sheath diameter while maintaining independent radial control of the stent graft.

A multifunctional oral stent integrates a tongue deviation septum with medication reservoirs to support cancer treatment.

Pre-assembled cartridge reduces clinician handling and contamination risks during percutaneous heart valve implantation.

Integrated lumen enables precise contrast delivery at the treatment site, eliminating catheter exchanges to reduce procedure time.

A guiding sheath delivers a compressed annuloplasty ring through the heart apex to the target valve, avoiding open surgery risks and reducing recovery time.

Helical slit and retaining clip enhance shearing action to remove clots from small convoluted vessels without fragmentation.

Segmented shaft with varying hardness transmits axial force while flexible distal tip navigates tortuous vasculature without vessel damage.

Segmented scaffold design decouples axial segments to reduce force transmission, preventing strut fracture under torsion.

A silicone coating seals porous grafts to reduce permeability and surface friction without increasing device thickness.

Segmented expandable scaffold maintains intracranial vessel patency while minimizing radial force to reduce penumbral tissue infarction.

Heated metallic mold with polished bore embeds drug delivery stents onto catheter balloons, preventing drug layer damage during secure mounting.