Stents TRIZ Cases

A tapered restrictor valve manages blood flow through elastic deformation of its distal end.

A dual-lumen arterial catheter diverts embolic debris from the aorta using concurrent perfusion and suction flows.

A vascular implant uses a sleeve-guided transition section to provide flexibility and stability during deployment.

Orienting warp yarns at an angle relative to the longitudinal axis enhances radial pressure resistance while maintaining seam integrity during expansion.

Axially offset sheath exposes seat to realign inner member after sterilization expansion, restoring component spacing for accurate device placement.

Vapor deposition creates a bio-corrodible metal stent member on a graft to provide temporary structural support that corrodes after tissue ingrowth.

Segmented applicator structure enables combined radiation and chemical therapy delivery while preventing cross-contamination between sources.

Longitudinal pre-stretching of a braided stent eliminates webbing and delamination during coating, ensuring uniform coverage for aneurysm treatment.

An expandable coil and capacitor form a tank circuit that detects arterial compliance via resonant frequency shifts.

Segmented inner and outer expandable members maintain blood flow through perfusion lumens during valve deployment, eliminating occlusion risks.

Self-expanding prosthetic heart valves dock onto existing structures to replace deficient valves without invasive surgery.

A single-handed delivery handle uses a pivoting thread tooth mechanism to retract a catheter sheath for controlled prosthesis deployment.

Segmenting a braided stent into diamond units resolves the trade-off between radial rigidity and flexibility, preventing kinking in mobile veins.

Retractable cuffs on a delivery balloon secure bioabsorbable stents during expansion, preventing dislodgment and ensuring uniform deployment.

Etching slots into the adherent layer of a stent graft accommodates radiopaque markers, resolving visibility versus device integrity trade-offs.

A flexible delivery catheter employs a radially expandable control member to precisely position self-expanding stents within tortuous vessels.

Segmented flexible sleeves reduce peak release force during stent deployment by distributing mechanical stress across independent structural zones.

Segmented bridge bows into lumen to distance sensor from vessel wall, preventing cellular ingrowth and ensuring accurate physiological measurements.

Barbs transition from constrained inward positions during delivery to extended outward states after expansion, preventing migration caused by peristalsis.

Segmented telescoping stent anchors in kidney and bladder to prevent blockages from strictures.

Electrospun fiber layers replace mechanical bonding to resolve manufacturing complexity while ensuring structural integrity under deployment forces.

Apposition lines facilitate bending control for expandable implants navigating tortuous vasculature without tissue damage.

A porous tubular member expands longitudinally under force to adjust device length for patient-specific anatomical fit.

Stepwise outer sleeve tip allows immediate stent transfer, preserving expansion force lost during long-term placement.

Segmented polymer depots attach via force fit to stents, simplifying manufacturing while enabling customizable multi-agent release profiles.

An endoscopic delivery device separates intestinal tissues using a segmented push assembly and a biodegradable release mechanism.

A sealed cover with a flow unit directs a defined medium around a stent to flush contaminants, preventing particle accumulation during compression.

Inward apices store elastic energy during expansion to improve flexibility and reduce recoil in tortuous vessels.

A dual balloon catheter assembly dilates hardened vessel walls using an inner non-porous balloon to press a porous outer balloon against the tissue.

Staged deployment through stable and unstable equilibrium states enables precise positioning of the self-expanding circulatory valve frame.

Segmented occlusion devices arrest blood flow via a central lumen to enable precise bilateral vessel sealing.

Inward curving link portions streamline radial flow to suppress thrombus formation near strut connections.

A method loads medical devices into delivery systems using stress-induced R-phase transformation in shape memory alloys.

Continuous anchoring machine stitching with loop points attaches stents to graft material, eliminating suture holes and reducing fluid leakage risks.

A tubular medical apparatus uses a constricting element to reduce pulmonary artery diameter for controlled blood flow adjustment.

Winding a PLLA element in rotational and back-wound directions alleviates terminal end weld stress, preventing structural failure during deployment.

A segmented endovascular stent-graft uses an eversion structure to enable sequential deployment stages.

An expandable guide catheter transitions from a collapsed navigation state to an enlarged delivery configuration.

A protruding sealing skirt expands radially past the stent frame to eliminate paravalvular leaks, enabling minimally invasive valve replacement.

A catheter delivery system compresses and expands a self-expanding stent to position a prosthetic heart valve.

An introducer assembly uses a proximal restriction mechanism to create a restricted annular gap between the sheath and dilator tip.

Tensionable mesh wires compress the medial lobe to relieve obstruction without invasive surgery.

A collapsible vena cava filter uses dynamic struts to capture thrombi and enable safe retrieval.

A catheter system uses a partially attached guidewire lumen to achieve predictable rotational and translational positioning.

A conical optical fiber delivers ultraviolet laser light to induce nitric oxide release, reducing mechanical friction during thrombectomy.

A dual-lumen catheter delivers multiple stents through a single wire guide path.

A pusher tube applies axial force to a catheter bulbous anchorage end, reducing effective column length and preventing buckling during delivery.

A retractable retaining wire constrains a self-expanding stent within a catheter shaft for compact delivery.

A nanometric metallic adhesion layer provides plastic deformability to a ceramic coating, preventing crack propagation during extensive fatigue solicitations.