Stents TRIZ Cases

Mechanical conditioning isolates NiTi defects in martensite zones, improving tubing fatigue strength while preserving superelastic behavior.

A planetary gear trigger assembly converts simple reciprocating motion into precise inner shaft movement for accurate stent deployment.

A clover-shaped retention structure and mesh holding section conform to wide-neck aneurysms and retain embolic coils for reliable occlusion.

Sequential tapered funnels and barrels uniformly crimp a heart valve prosthesis to sheath diameter for precise loading and minimally invasive delivery.

Short radial dies compress stents incrementally for catheter loading, cutting force, wear, compliance, and contamination risk.

Pre-cut break-off x-ray markers enable batch production, strong scaffold bonding, and passivated surfaces that limit corrosion risk.

Precisely laser-formed openings make stent-graft material selectively permeable, promoting tissue ingrowth while reducing endoleaks and migration.

An impermeable outer layer seals the dissection while a permeable inner layer promotes coagulation and tissue ingrowth to prevent endoleaks and migration.

A flexible sock pulls expanded prosthetic valves through a tapered lumen to crimp rigid designs with better force control and portability.

A tapered-channel container stores a transcatheter heart valve expanded, then crimps it during removal to limit handling damage before implantation.

Magnetic data written on implantable fabric lets prostheses store and reveal patient or procedural information without continuous power.

Multiple flange zones add radial anchoring force to keep a self-expanding stent in place under peristalsis and flow turbulence.

A flexible torque-transmitting catheter centers and captures mitral valve fixation implants for minimally invasive removal through the vasculature.

A 3D-matched split anchoring stent secures transcatheter aortic valves in difficult anatomy, reducing migration, leakage, and regurgitation.

An actuation wire with tethered attachment steers an expandable device to stay perpendicular in tortuous vessels, improving sealing during deployment.

A two-layer tubular tissue valve improves durability and supports compact stent expansion with lower seam stress and leak risk.

A switchable graft valve collapses internal volume to nearly zero when closed, preventing clotting and arterial steal without post-dialysis flushing.

An electrically expandable catheter tip stays low-profile in tortuous vessels, then widens for stronger thrombus engagement and aspiration.

A nickel-free, cobalt-free metal cladding bonds to the implant base to stop harmful ion dissolution while preserving strength and corrosion resistance.

A warp knit constraining fiber uses knotted loop sections to resist radial force and prevent premature stent or stent-graft deployment.

Electrophysiological heart signals are linked across a main sensor and body-surface sensors to track blood pump position without imaging.

A staged crimping and balloon pressurization sequence stabilizes stent retention on balloon catheters for secure delivery.

An electrospun porous covering helps aneurysm stents stay compressible in small vessels while supporting endothelial growth and blood flow control.

A dry bovine pericardial valve, sealing skirt, and eyelet-fixed stent frame help limit paravalvular leakage and improve implant stability.

A rotatable inner sheath and telescoping outer sheath speed precise aortic connector deployment while reducing open-surgery risk.

A dual-mesh synthetic resin stent balances self-expansion, restorability, GI tract adhesion, and peristaltic tracking while staying deliverable.

A soluble sealing layer protects implant surface purity and antithrombotic properties during storage, then dissolves before lumen contact.

A segmented delivery sheath balances stent capacity, pushability, and break resistance to support safer release of larger vascular stents.

A removable masking layer blocks sealant from the graft lumen, enabling leak-tight sealing while preserving tissue ingrowth and flexibility.

Sealing members isolate a vessel segment so therapeutic agents stay local, reducing systemic toxicity while maintaining blood flow.

Pre-straining lets a self-expanding stent-graft deploy from a smaller profile while maintaining vessel diameter with controlled radial force.

A tapered loading lumen collapses stents predictably with lower strain, improving sheath delivery and precise expansion at the target site.

Post-storage crimping preserves a small inflow orifice, improving aortic valve seating accuracy and reducing displacement during delivery.

A segmented iliac vein stent uses distinct positioning and support sections to improve placement, maintain vein support, and lower thrombosis risk.

A layered implant assembly encloses the radiation source to protect prostate tissue, reduce infection risk, and simplify implantation.

A tapered sheath compresses the stent graft and releases vessel-wall prongs, enabling safer extraction with less vessel damage.

Interlocking stent rows with spaced web elements balance compact delivery, deployed strength, porosity, and resistance to torsion and axial compression.

Flexible loading-capsule members and a locking collar create a secure removable coupling that stabilizes prosthetic device loading and delivery.

Uniformly dispersing high β-TCP content in PLLGA fibers enables electrospun bone-regeneration material with rapid degradation and controlled release.

A braided helical valve frame conforms to cardiac motion to reduce migration, tissue trauma, and blood flow disruption during delivery.

A tapered expandable valve frame enlarges the outflow orifice to cut pressure gradients, turbulence, and paravalvular leakage.

A retainer-linked expandable frame enables partial deployment and recapture of transcatheter valves for secure placement in larger native valves.

An overlapping two-part balloon cover controls intermediate and final expansion while raising burst pressure and limiting stent misalignment.

A folded tubular graft and mandrel-guided assembly keep bifurcated endoprosthesis legs aligned for branch vessel repair and vessel patency.

Stepwise stent release with movable sleeves improves heart valve positioning while reducing crimping damage and loading complexity.

Multiple catheter lumens and shaft openings keep flush flow uniform at the distal seal, reducing blood stagnation and thrombus risk.

A fiber-reinforced multilayer membrane resists suture tearing while preserving low liquid permeability and a thinner stent graft profile.

A suture-linked thrombogenic fiber lets stent-graft endoprostheses promote thrombosis with simpler, more adaptable attachment.

Tethers and a cinching member let a partially deployed mitral valve be resheathed, repositioned, or retrieved to improve placement accuracy.

A multi-port stent graft delivery device uses indwelling access sheaths to facilitate catheterization of side branch vessels.

Eutectic alloy welding joins austenitic stainless steel guide wire components, increasing tensile strength without complex procedures.

A stent delivery system uses a retraction chord to deploy a graft along the outer curve of an aortic lumen.

Radial tissue supports extend inwardly from the stent inner surface to attach a single functional leaflet at discrete points.

Machined ramp surfaces allow axial adjustment to compensate for electro-polishing dimensional variations, maintaining consistent welding gaps.

A pre-loaded multiport delivery device uses access sheaths and guide wires to facilitate precise catheterization of side branch grafts.

A bifurcation stent system uses a profiled balloon and marker bands to position distinct vessel segments accurately.

Oversized self-expanding stent migrates into peri-adventitial space to disrupt renal nerves, replacing complex RF ablation with a simpler mechanical approach.

Pre-compressed expansion aid element exerts radial force to prevent stent collapse in curved vessels.

A percutaneous ventricular assist device uses a magnetically coupled rotor and stator to generate controlled blood flow.

Segmented corewire flexibility improves vascular navigation while resistive heating enables reliable detachment of therapeutic payloads.

A stented prosthetic heart valve incorporates a flexible wrap that expands to seal gaps between the device and native tissue.

A gallbladder implant uses a blocking portion to push stones away from the opening while a filter portion retains them.

Three independent nitinol loops cross over each other to capture foreign objects, reducing structural complexity while maintaining loop geometry stability.

Magnetic porous vascular grafts attract and retain endothelial cells, preventing blood clot and scar tissue formation in small-diameter vessels.

Fenestrated stent segments preserve branch vessel patency while the main body repairs damaged vessels, resolving obstruction and alignment contradictions.

Friable connecting parts rupture after implantation to reduce rigidity and prevent stent fracture in curved vessels.

A self-expanding vascular prosthesis integrates tapered side branches into the main trunk to accommodate varying vessel diameters.

A deflecting screen in the aortic arch blocks embolic particles from side branch vessels while maintaining blood flow and avoiding arterial wall damage.

Oblong cross-sections eliminate radial gutters between parallel endografts.

A percutaneous transluminal angioplasty system integrates a multi-lumen catheter, expandable balloon, and self-expanding stent for simultaneous vascular treatment.

Securement members anchor the device inside a stent to prevent migration while blocking aneurysm neck flow without occluding branch vessels.

Oscillating loads in the retraction device reduce tissue trauma by accommodating viscoelastic properties and preventing ischemia.

A flexible stent uses a proximal flange and distal pigtail to anchor securely within the nasolacrimal duct.

Radiopaque markers attach to selected stent inflection zones to share release stresses with non-marker struts.

A catheter system with movable sleeve members controls expandable heart valve stents.

Nesting sensors inside medical tubes resolves complexity trade-offs by providing real-time data on placement and tissue interaction.

A polymer-free drug coating on an endovascular stent enables direct vessel wall contact and controlled anti-restenosis release.

Active stent expansion using drive wires resolves pre-sizing errors by allowing post-deployment diameter adjustment.

Rotating the protection tube exposes inner and outer surfaces to the spray nozzle, resolving uniform deposition issues on complex geometries.

An insulated radiopaque marker element prevents galvanic corrosion within endoprosthesis hollow cylinders.

A segmented embolic device uses discrete mesh-screen and coil sections to balance porosity with enhanced flexibility for vascular delivery.

Traversing ligatures create a fenestration lock that secures branch prostheses, reducing endoleak incidence in juxtarenal aneurysms.

Dynamic nozzle movement excludes bending portions from drug coating to prevent stress-induced peeling while maintaining manufacturing yield.

Integrated pressure sensors in a tissue stent detect occlusion via pressure gradients, replacing unreliable Doppler sonography.

A segmented delivery system positions prosthetic valves through the heart apex using a rigid rod structure.

Asymmetric anchoring hooks prevent stent migration in visceral anastomosis strictures, reducing frequent drain exchanges.

A gate driving circuit outputs opposite phase signals to pixel transistors.

A woven nitinol stent uses a dual layer structure to independently expand, anchoring securely while diverting blood flow to occlude aneurysms.

A valve prosthesis uses a radially deformable tubular support and flexible shutter to enable periodic replacement without major surgery.

Segmented coil outer member resists buckling and kinking to ensure accurate stent deployment within body lumens.

A fenestrated stent graft uses a trigger wire to retain a valve arrangement away from the fenestration during deployment.

An adjustable stiffness catheter reconfigures internal tube layers via an actuator to navigate tortuous body lumens without kinking or perforating vessels.

A rotary casting method molds fibrinogen and autologous cells into stable tubular tissue constructs within a hollow mold.

Segmented waveform construction with crimp connectors aligns stent ends orthogonally, resolving manufacturing complexity from single-wire forming.

A retaining member with circumferentially enclosed slots and axial openings secures stent portions for controlled self-expansion.

A stent-graft with selective bonding between the stent and graft members enhances device flexibility.

Expandable basket segments thrombi into smaller pieces, preventing large debris embolisms.

Magnetic arrays anchor an ascending aortic stent graft to seal the sinotubular junction, avoiding open heart surgery and reducing operative mortality.

Segmented expandable components deliver variable porosity profiles to occlude aneurysms and reinforce walls, resolving inadequate thrombosis risks.