Stents TRIZ Cases

A bi-directional stent delivery system uses a shuttle sheath coupled to inner and outer shafts for controlled radial expansion.

Integrated actuator and locking mechanism resolves bulky design complexity while ensuring secure valve retention in calcified annulus.

A steerable guide catheter deploys endovascular staples to anchor prostheses within body lumens.

A transcatheter delivery device integrates guide wire control into the handle assembly for single-operator positioning.

Helical prosthetic branches form tromboning connections that reduce hemodynamic forces and prevent branch dislocation.

Compressible chambers in the tubular body establish a compliance gradient that reduces mechanical stress and stenosis at anastomotic sites.

Nested tapered zones in a modular stent graft eliminate the stove piping effect and turbulent blood flow by ensuring precise diameter matching.

A stent graft valve arrangement uses a resilient tube to seal fluid flow, preventing blood loss during iliac artery access.

A thumb-actuated screw mechanism winds a wire reel to release medical stents with precise tactile control.

A radially expandable sleeve encircles a self-expanding valve prosthesis to provide sealing upon deployment.

A retrievable expandable stent system delivers adjustable radial force to maintain vessel patency in intracranial vasculature.

A medical stent uses movable elongate anchors to secure placement within body lumens.

Pivot fenestrations in a branched endoluminal prosthesis accommodate dynamic vessel geometry, reducing procedural time and complexity.

A catheter introducer uses a truncated conical cavity to compress distal end assemblies for sheath insertion.

An introducer sheath slides proximally to engage an interference feature on a pull wire, mechanically retracting the wire to release an embolic implant.

Segmented stent grafts with inflatable channels resolve the contradiction between large transverse profiles and ease of deployment in aneurysm treatment.

Segmented nitinol structures allow precise deployment through tortuous vasculature while minimizing tissue trauma during anchoring.

A delivery device uses a pre-embedded guidewire to guide branch stents through main stent fenestrations.

A rotatable inner cannula moves a proximal tip longitudinally to engage or release an endoluminal prosthesis.

Tissue engineering scaffolds prevent delamination during implantation by integrating mechanical tethers and adhesives between layers.

A one-way clutch transmits torque from an actuator to an inner shaft assembly, winding a cable to retract the outer sheath.

Self-sealing grommets in reinforced graft holes prevent hole enlargement and reduce endoleak risks during stent attachment.

Collapsible mesh patch deploys helically inside the abdominal cavity using an inflatable balloon actuator within a single-bore applicator.

Nested transport tube houses keeping wires, eliminating manual extraction risks and simplifying medical device deployment.

Autonomous implant monitors fluid flow to mitigate thrombosis and restenosis.

Movable stent wing parts adjust spacing to match tissue gaps, preventing leaks and ensuring reliable fixation.

A curvature-adjustable endotracheal tube uses a wire mechanism to bend the tube body, preventing tracheal damage during intubation.

An auxiliary elongated element and core wire pre-crack tight lesions, enabling safe vessel dilation at lower inflation pressures.

Counterbalancing shape memory expansion with a resistive second portion stabilizes the structure and reduces recoil during deployment.

A fluoropolymer composite film wrap bonds a melt-processable inner layer into an expanded PTFE outer shell to create a seamless, abrasion-resistant insulation barrier.

Non-interwoven fenestration areas enable controlled opening formation without tearing graft material, preventing uncontrolled blood flow.

Segmented copolymers resolve the trade-off between mechanical flexibility and biodegradability, preventing stent cracking during expansion.

Segmented handles and pre-configured wires simplify deployment, reducing operation complexity while maintaining placement accuracy.

An implantable ureteral stent integrates flexible membrane pressure sensors at both ends to measure urinary pressure via wireless transmission.

Automated intravascular OCT analysis compares pre- and post-deployment stent profiles to detect sidebranch jailing and overexpansion risks.

A medical delivery system uses electrical resistance changes to confirm implant separation.

An extension sheath enables access to the internal iliac artery by extending over the aortic bifurcation, eliminating complex wire snaring.

Segmented overlap elements open under force to seal fluid pathways, resolving leakage risks during vessel integration.

Segmenting the stent frame into an anchoring section and valve support enables secure percutaneous placement without distorting the native mitral annulus.

An aneurysm closure device uses a supplemental stabilizer to anchor against the parent vessel wall.

Parylene coating prevents mucus buildup and tissue adhesion, reducing bleeding risks during removal.

A bifurcated catheter links distal portions for delivery then separates them into vessel branches.

A recanalization catheter uses an inflatable balloon to anchor within the true lumen distal to a vessel occlusion.

Segmented semi-compliant balloon catheter anchors via dumbbell inflation before central dilation, preventing slippage during airway stenosis treatment.

Warp knitted textile inserts resolve low tissue adhesion by creating porous microtubes that promote cell colonization and reduce inflammation.

Merging pressure sensors with existing implants enables accurate left atrial monitoring while reducing device complexity and energy consumption.

A stent delivery device uses a thread and protrusion to fix the distal end of a stent on an inner shaft.

Scalloped fenestrations and articulated side arms enable off-the-shelf deployment for varying vessel positions.

A helical stent design provides structural support to the airway while minimizing trauma during placement and removal procedures.