Stents TRIZ Cases

Segmented tension threads act on individual shaft fibers to resolve buckling and bulging from non-uniform folding forces.

Dynamic spraying creates a helical groove in the polymer stent, enabling easy removal as a slender strip without compromising structural integrity.

A pre-loaded guidewire within an elongate tubular member creates a direct entry path into the contra-lateral leg of a bifurcated stent graft.

Segmented stent grafts release circumferentially to maintain operator control during curved aortic arch navigation.

Segmenting sealing interfaces into a fixed first seal and a dynamic second seal reduces deployment force while maintaining hemostasis.

Pre-mounted loading cone and tube assembly reduces manual handling errors during TAVI procedure by integrating components into a single unit.

Biocompatible stent establishes fluid pathway through trabecular meshwork to reduce intraocular pressure while avoiding surgical trauma and infection risks.

Flexible damping devices deployed in arteries absorb systolic pulse energy, reducing mechanical stress on distal vessels and brain tissue.

Segmented vascular remodeling device prevents embolic material herniation at complex neurovascular bifurcations.

Undulating stent design with offset struts balances flexibility and tubular stability to prevent kinking.

Segmented anchoring and sensing structures compensate for non-symmetrical inferior vena cava expansion, enabling precise long-term fluid status monitoring.

A tubular prosthesis uses inflatable cuffs for vessel wall fixation without a metallic endoskeleton.

Segmented endograft limbs and guidewire-guided fenestrations resolve placement precision challenges in complex vascular anatomies.

A bioabsorbable stent reinforced with amorphous particles provides enhanced mechanical resistance for organic conduits.

A collapser system with a movable orifice and locking mechanism positions prosthetic devices onto delivery catheters.

A capsule assembly with a lead-in surface and barb engages stent grafts for stable retrieval.

An indwelling device uses an inclined covering portion to prevent a shaft step from catching on a tubular treatment device during removal.

A porous body uses two polymers with different moduli and absorption rates to support tissue regeneration.

A nested catheter and sock configuration compresses an endoprosthesis to reduce the device outer diameter.

Heat sintering fuses biocompatible layers onto an hourglass stent via a mandrel, preventing tissue ingrowth and thrombus formation.

A pre-formed holding element guides a second catheter into position, ensuring reproducible kissing surfaces between inflated balloons for aneurysm treatment.

Segmented loading mandrel projections engage stent recesses to distribute axial forces, preventing buckling of long flexible self-expanding stents.

Perforated regions with closed edges in a vascular prosthesis enable reliable sealing at branch vessels, preventing leakage during deployment.

A bifurcated stent graft positions fenestrations proximally to align side branches with internal iliac arteries.

Segmenting the device into rigid and flexible zones prevents kinking in side branches while maintaining structural integrity across aneurysmed spaces.

Helical whip sutures join seal members to valve leaflets, reducing invasiveness while maintaining attachment strength.

Applying electrostatic attraction via a pushwire core assembly secures thrombus adhesion, reducing clot detachment risk and procedural duration.

A flared vaginal stent with a flat anterior surface and curved posterior surface presents the natural anatomy for precise graft attachment.

An indwelling aortic device restricts blood flow to induce physiological diuresis and reduce fluid accumulation in heart failure patients.

An expandable structure alters arterial geometry to improve compliance, reducing systolic pressure and cardiac workload while avoiding medication side effects.

Barbs secure radiopaque markers via interference fit, eliminating welding oxides and dislodgment risks.

An elastic braided stent with a nested retention member prevents throat migration while providing even pressure without individual adjustment.

Pre-inflating a multi-pleated balloon before crimping a polymer scaffold prevents structural failure and ensures consistent deployment through tortuous anatomy.

Connection apertures join individual spirals to prevent sagging during laser cutting of long tubes.

A guide catheter with a low-pressure arcuate marker balloon segment enables precise stent positioning at vascular bifurcations.

A controllable apical piercing tip and movable leaves anchor side-branch stents into main grafts, preventing unintended vessel damage during insertion.

Segmented distal tip assemblies enable sequential deployment of emboli filters and stents, resolving complexity trade-offs in vessel safety.

A vascular prosthesis uses a longitudinal seam to gather the wall and form an arch shape while preserving its accordion-like pleating structure.

A helical implantable device with ring members and connecting members deploys within the urethra using a camming barrel mechanism.

Stent employs shape memory cantilevers to release drugs only when physiological stimuli trigger opening, reducing restenosis and thrombosis risks.

A tethered pop-up branch stent graft uses mechanical tethers to align side branches with target vessels during deployment.

Capillary action fills hollow wire stents with fluid drug formulations, enabling increased therapeutic substance quantities without expanding device size.

Water jet treated microfiber bundles create porous stent grafts that prevent endoleakage by conforming to vessel walls without creasing.

A gear and pulley mechanism drives bidirectional outer catheter movement, resolving manual retraction inaccuracies that cause premature deployment.

Low profile inflatable balloon navigates nasal passage to dilate Eustachian tube, reducing healthy tissue damage and restoring pressure equalization.

Segmented containment structure preserves internal spacing under compressive forces, ensuring nutrient access and reducing immune response.

An implant sensor assembly employs a passive resonant circuit where environmental interaction shifts resonance frequency, eliminating active energy consumption.

Embedded zigzag reinforcement members enable self-sealing cannulation regions in tubular grafts, reducing infection risk from repeated needle sticks.

Flexible truncated cone support elements reinforce the implant capsule of a delivery catheter to maintain structural integrity during resheathing.

A dynamic outer sheath with an adjustable orifice prevents drug loss on vascular catheters by enclosing the balloon.