Stents TRIZ Cases

Leadless electromagnetic markers guide prosthesis alignment via magnetic field detection.

Segmented stent cover bonds wires at remote locations to maintain axial flexibility while preventing restenosis.

A stent-deployment assembly uses a segmented locking mechanism with a laterally breachable guidewire-retaining segment to enable proximal withdrawal disengagement.

Interwoven right and left-handed helical wires create a meshed stent that recovers shape after distortion, resolving adaptability versus stability trade-offs.

Magnetic compression drives a balloon-like structure in an implantable ventricular assist device, creating pulsatile flow that reduces hemorrhage risks.

Compensation slits in nickel titanium stents absorb polishing-induced deviations, ensuring precise welding interfaces without external jigs.

A paclitaxel and shellac coating on catheter balloons enables rapid drug release during brief inflation.

Segmented endograft branches align with peripheral vessels to preserve blood flow, resolving the contradiction between aneurysm exclusion and vessel blockage.

Expandable member engages stent inner surface to prevent axial compression and inversion during delivery, ensuring reliable aneurysm treatment.

Segmented polymer delivery elements on a stepped metal core distribute resistance evenly, preventing kinking during curved vessel deployment.

Endovascular aortic valve repair apparatus uses branch support members to maintain coronary ostia fluid connection during minimally invasive implantation.

A self-expandable vascular stent transitions from a compressed delivery profile to a radially expanded position using segmented cell structures.

Variable wall thickness in the balloon body and cone improves navigation through tortuous vessels while maintaining burst pressure resistance.

A prosthetic valve with a radially expandable lattice structure and foldable joints adapts to patient growth.

Eversion and retraction of the tapered sleeve enable controlled stent expansion, resolving deployment complexity.

Contra-rotating impellers in a percutaneous heart-assist device optimize fluid dynamic efficiency, reducing hemolysis and surgical invasiveness.

Heating the stent reduces its inner diameter, allowing easy removal from aortic models and lowering medical training costs.

Replacing mechanical coupling mechanisms, this polymer bond simplifies catheter design by enabling reliable implant release through controlled tensile force.

Segmented expandable mesh with angled articulating portions covers aneurysm necks to block inflow without obstructing adjacent branching vessels.

Protrusions push leaflets radially inward, preventing pinching and damage between struts while enabling successful device delivery.

Segmented stabilizer body translates relative to a stationary platform to reposition medical devices without decoupling, resolving stability trade-offs.

Mandrel elongate members create internal surface irregularities that reduce friction and facilitate disassembly from the mandrel.

Biaxial stretching of a multilayer catheter balloon increases blow-up ratio while maintaining flexibility, preventing vessel trauma during angioplasty.

A composite wire method shapes nitinol stents using a removable outer member.

A nested balloon insert with compartments releases substances via diffusion.

Segmented balloon inflation prevents vessel wall dissections during stent deployment by controlling expansion phases at the ostium.

Articulated injection tubes direct cryogenic fluid to specific tissue areas, preventing unintended ablation caused by non-uniform coolant dispersion.

A nested catheter and guide wire system delivers drugs locally to retinal or spinal vessels, reducing unintended discharge.

Coil heating element prevents laser leakage to non-heating parts, ensuring durability and efficient thermal expansion of blood vessels.

A subintimal tracking catheter navigates the vascular wall to bypass occlusions.

Capillary action fills hollow wire stent lumens with fluid drug formulations, bypassing mechanical injection constraints.

Radial runners with deployable spacers expand endoprostheses to secure valve leaflets, preventing calcified tissue from obstructing coronary arteries.

A self-expanding mesh device creates a stable conduit between the left atrium and pulmonary vein.

Segmented dilator sheaths collapse lateral tines to retrieve transcatheter heart valves without extracorporeal circulation.

A helically shaped balloon catheter induces swirling blood flow patterns within the vessel during expansion.

Segmented flexible elements enable controlled stent compression, reducing friction and tissue damage during removal.

A balloon catheter system uses a bendable stylet to navigate and maintain position within airway stenosis.

Filter pouch captures emboli from fluid flow in the aortic arch, preventing vessel blockage during TAVR procedures.

Folding members on the balloon surface guide the device into a compact configuration during deflation to prevent entanglement in the introducer sheath.

Proximal sheath movement reduces wire slack to automatically decouple the prosthesis, eliminating complex manual release steps.

Nested primary and secondary capsules enable partial valve positioning to prevent dislodgement during percutaneous implantation.

Relief dimples in stent links reduce fatigue failure from cyclic loads.

Circumferentially offset stent strut apices reduce interference and enhance apposition to the body lumen.

Nested apical locking mechanisms interlock stent grafts via flared frusto-conical structures to prevent separation and endoleaks.

Laser ablation removes integral dilation beads from a balloon, resolving the trade-off between effective stenosis dilation and difficult catheter bonding.

A catheter delivers a self-expanding stent to treat intracranial stenosis while a distal pressure sensor measures blood flow parameters.

Actuator locking mechanism prevents premature stent deployment during precise positioning.

An asymmetric bulb-shaped stent reduces gaps between the device and vessel walls to prevent coil migration in wide-neck cerebral aneurysms.

Segmented shafts and nested balloons resolve the trade-off between high dilation force delivery and flexible penetration into narrow, damaged vessels.