Stents TRIZ Cases

Directly connecting the pull element to the sheath's reinforcing structure reduces friction and allows higher tensile forces for longer implants.

Rotational phase change of a liquid polymer creates a uniform thromboresistant surface that prevents platelet deposition on implantable devices.

Shunt body sensor implant projects transducers into channel areas to detect left atrial pressure changes, enabling early congestive heart failure intervention.

Flared distal bends reduce friction between the compressed stent and the restraining sheath, preventing component damage.

A valve recoil inhibitor adapter maintains the crimped diameter of a prosthetic stent during insertion.

Central and peripheral lobes on a non-metallic stent resolve the contradiction between expandability and structural complexity.

V-shaped wire structures mechanically anchor prosthetic heart valves, eliminating suture requirements and reducing infection risks.

A transcatheter delivery device uses a carriage assembly and distal sheath to control valve expansion stages.

A suture loop secured by a release wire holds a stent-graft on a cannula, resolving the trade-off between sealing accuracy and repositionability.

Implantable filter uses movable obturators to reconfigure anchoring legs between pre-deployed and deployed states.

A tubular endoluminal prosthesis incorporates pivotable fenestrations that rotate to align with branch vessels after deployment.

Discrete bio-resorbable rings on an ePTFE graft minimize foreign body reactions while maintaining structural strength.

A catheter uses an inflatable balloon to anchor the device within body cavities while a bendable element enables precise steering.

An orthogonal clip fixes the catheter assembly near the handle, enabling single-operator loading of prosthetic heart valves.

A handle assembly uses a force limiter and brake frame to wind tension threads for medical implants.

Dynamic adjustment of connecting body distance varies expansion against urethra tissue, resolving static shape limitations.

Electrospun bioerodible polymer matrix restricts circumferential expansion of vein grafts, reducing intimal hyperplasia risk during arterial bypass procedures.

Open distal catheters deploy self-expanding nitinol stents at bronchial junctions, eliminating proximally directed forces that cause tissue erosion.

Segmented control release sleeves advance to expose proximal anchor ring apexes sequentially, resolving incomplete anchoring in complex vascular anatomy.

A signal processing unit aligns ultrasound and optical tomographic images by interpolating line data based on shared features.

Differential ultrasonic wave reflection from asymmetric wall portions allows accurate positioning of intraluminal medical devices without fluoroscopy.

Alternating concave and convex wall sections in a flexible shaft prevent material overload while maintaining stability during insertion.

Thermoformed biodegradable polymers adapt to knee joint anatomy, reducing restenosis and enabling targeted drug delivery.

An expandable sheath seals the introducer entry point to prevent blood leakage during device withdrawal.

Welded polymeric film segments form multi-lumen lay-flat tubing, enabling cost-effective thin-walled catheters without expensive extrusion.

An implantable segmented stent increases arterial radius of curvature to enhance baroreceptor strain while maintaining blood flow.

A catheter uses inflatable members to confine heated fluid within a body cavity, delivering precise thermal energy to target tissue.

Segmented magnetic strands in vascular grafts attract and retain viable biologic cells, improving patency rates while maintaining fabric flexibility.

A prosthesis delivery system uses a radial holder to constrain tethers within a sheath for controlled collapse.

An expandable balloon positions between the heart and esophagus to absorb thermal energy, enabling full-power ablation without causing collateral tissue damage.

Near-infrared probe targets tissue factor and fibrin markers to identify late stent thrombosis risk before symptoms appear.

A percutaneous assembly uses a radially expandable dilator tip to adjust between contracted and expanded configurations.

Occlusion balloon blocks blood flow while infusion lumen delivers protective agents, preventing microvascular obstruction during stent deployment.