Stents TRIZ Cases

Flexible flaps with angled grooves trap and crush viruses in blood flow, reducing viral load without host cell toxicity.

Selective stent frame release via a capture assembly enables precise partial deployment and secure retention of the prosthetic heart valve.

Nested staggered stent elements reduce device profile for percutaneous access while longitudinal struts maintain columnar strength during deployment.

Nested expandable stents within a double tubing structure provide fluid-tight seals in vessels with varying diameters or aneurysms.

A controller uses feedback from a position sensor to adjust a drive motor, resolving the trade-off between reduced invasiveness and accurate device deployment.

Segmented hook-shaped anchoring elements absorb tensile forces from chordae and papillary muscles, preventing annulus widening during systole.

Conical anchoring segments stabilize positioning during expansion to reduce perivalvular leakage risks.

A bifurcated stent graft incorporates an internal limb within a diamond-shaped fenestration to establish a direct access pathway.

Interlocking fibers directly on a reduced-diameter implantable medical device to form a constraining mechanism.

Laser-induced voids in polymeric stents scatter optical radiation, resolving fluoroscopy limitations by enabling precise OCT visualization of the substrate.

Nested markers reduce radial thickness to improve stent flexibility while maintaining precise radiographic visibility during deployment.

Strategic marker placement resolves biodegradable polymer radiolucency while maintaining structural integrity.

A dual-segment renal stent combines balloon and self-expanding sections to conform to flared ostial anatomy.

A stent delivery system uses a multi-pinion rack mechanism to move the sheath proximally for precise deployment.

A prosthetic heart valve uses a flexible substrate to fold into a cylindrical shape for efficient fabrication.

Concentric catheter tubes with a drive mechanism adjust axial positions to bulge a flexible distal seal against tissue.

A delivery member applies a treatment part to a urethral stricture area to promote epithelial function and tissue repair.

Variable wall thickness reduces source-to-target distance, increasing dosage efficiency while limiting exposure to surrounding healthy tissue.

A catheter safety tether secures the distal tip to the manifold, ensuring complete vessel withdrawal when the hypo-tube fractures.

A flexible tubular stent graft uses a heat-set configuration to expand its intermediate portion beyond the proximal and distal ends.

Segmented vascular anchoring trunk and branch members self-align within complex vessel geometries, preventing unintended movement during deployment.

Self-expanding stent arms enable precise placement of the covered-uncovered transition to prevent stenosis and maintain shunt patency.

Reduced cross-sectional area at curved apex portions allows compression to a small delivery profile while maintaining non-invasive engagement with vessel walls.

High molecular weight polymer deposition on cylindrical members enables low residual solvent levels while maintaining mechanical integrity.

An inflatable retention cuff secures a tapered collection member to prevent migration and leakage, reducing infection risks for incontinent patients.

Hydrophilic polyurethane cuffs expand upon fluid exposure to exert sealing force, preventing migration and leakage risks in endovascular repairs.

Segmented shaft stiffness and dual balloons resolve pushability versus kinking trade-offs.

A side catheter branch connects to main or side balloons to maintain consistent orientation during inflation and deflation cycles.

Linking two balloon catheters side-by-side prevents premature stent dislodgement during bifurcated vessel deployment.

A heparin-coated implantable sensor minimizes thrombus formation while maintaining accurate glucose transport for continuous monitoring.

Ring sections extend beyond graft edges to couple with tip capture mechanisms, resolving positioning control issues in closed web configurations.

A tubular endovascular graft uses near-infrared dye to absorb laser energy for secure stent attachment.

A stent delivery system uses processors to determine optimal insertion positions from observation images for precise device placement.

A balloon catheter with surface depressions holds therapeutic substances that diffuse into the lumen wall upon inflation.

Internal helical ridges reduce turbulence while tapered ends with overhanging flaps ease surgical suturing.

Segmented struts apply variable radial force to retrieve clots while minimizing vessel trauma during stroke treatment.

Segmented peaks and troughs distribute radial forces along struts, improving axial compliance while maintaining structural integrity in high-flex vessels.

Multimodal radiopaque particle size distributions increase material density by filling interstitial spaces between larger particles.

Non-linear struts in a polymeric stent reduce radial recoil and foreshortening, resolving stiffness mismatch issues that cause localized vessel damage.

Bidirectional gear sets drive inner lumen and outer sheath shuttles in opposite directions to compensate for stent length changes during expansion.

Rounded protrusions on an expandable surface fracture calcified plaque while protecting the vessel wall from injury.

Coiled grommet reinforces in-situ fenestrations to prevent tearing and leakage without aggressive post-dilation.

Flexible membrane closure prevents residual thrombus formation by creating a complete seal within the left atrial appendage.

An adjustable loading device employs a suture intermediary to attach and detach stent-grafts, reducing mechanical damage during insertion.

A stent length estimation device calculates expanded dimensions using wire pitch and vessel diameter parameters on three-dimensional images.

A self-expanding vascular prosthesis uses meandering stent rings and inwardly extending side branches to bridge aneurysms while maintaining vessel patency.

An expandable balloon anchors a suprapubic catheter inside the bladder, enabling reliable placement through the abdominal wall without incisions.

A segmented overtube with increasing aperture openings supplies lubricant uniformly, preventing intestinal wall damage during insertion.

Embedding expandable structures in prostate tissue prevents encrustation and migration while maintaining urethral patency.