Stents TRIZ Cases

UV ring-beam irradiation releases nitric oxide to dilate occluded arteries, easing clot removal while reducing vessel wall damage.

Braided stent channels maintain biliary and pancreatic duct access for branch drainage while reducing repeated cannulation.

Flex sensors on prosthetic valve struts provide real-time diameter feedback during implantation to improve sizing and reduce leakage risk.

A tapered carotid access sheath with balloon sealing enables direct stent deployment and filter retrieval while reducing stroke risk.

A foldable distal tip and proximal seal let the sheath expand for implant passage, then collapse to reduce vessel trauma, plaque dislodgment, and blood leaks.

A dual-resin inner tube structure bonds the outer layer around wire reinforcement while preserving a slippery, damage-resistant inner surface.

Pressure and anchoring wires keep the prostatic urethra open while preventing median lobe suction from blocking the bladder neck.

Magnetic guidewires, sheaths, and external magnets align mispositioned implants for faster retrieval with less operator skill and radiation exposure.

Varying braid angles and offset closed-cell corners improve deliverability, radial support, and migration resistance in an endoprosthesis.

A pre-positioned crossover guidewire in a nested bifurcated prosthesis delivery system reduces cannulation steps and eases tortuous vessel access.

A sheath and stopper restrain a bioresorbable vascular scaffold while balloon inflation enables accurate coronary deployment and lowers malapposition risk.

A self-expanding helical biliary stent simplifies antegrade placement, improves duct retention, and shortens imaging time during bile duct surgery.

Curved-path resection blades remove obstructive valve leaflet tissue before valve-in-valve implantation to help keep coronary blood flow open.

A deformable distal catheter tip shifts from cylindrical insertion to a conical shape that retains thrombus during stent retraction.

Adhesive-penetrating cover sheets let thrombogenic fibers be fixed at selected endoprosthesis locations to promote localized thrombosis.

Selective balloon occlusion keeps brain and body perfusion during aortic arch repair, avoiding circulatory arrest and reducing bypass time.

A deflectable handle and tapered capture tool help anchor a prostatic urethral stent, prevent migration, and simplify removal for BPH treatment.

A woven braid anchor expands into double-walled flanges to secure tissue layers, limit necrosis risk, and allow endoscopic removal.

Axial side channels route fluid around the delivery apparatus to cut push force, reduce vacuum effects, and maintain hemostasis.

A self-expanding vascular scaffold with integrated electrodes enables minimally invasive neural interfacing with re-sheathing, repositioning, and retrieval.

Integrated one-hand controls simplify multi-catheter robotic navigation by selecting devices and rotating only the intended instrument.

A swallowable intragastric balloon uses catheter delivery, pressure feedback, and controlled inflation to improve satiety with less discomfort.

A three-layer ePTFE and elastomeric graft uses circumferential compression to reseal needle punctures and reduce fluid leakage.

A fingered sleeve and perforated balloon structure guide overinflation tears axially, reducing detachment risk and easing catheter retrieval.

An expandable filter structure captures debris during transluminal drug delivery while supporting consistent placement and removal in body lumens.

Alternating high- and low-stability bands let a tubular implant break into smaller intact segments for safer natural removal.

Pocket-mounted sensors verify prosthesis alignment on a transcatheter valve delivery spindle, cutting loading delays and fluoroscopy use.

Expandable end anchors secure the intestinal scaffold while closing a fistula, limiting leakage and preserving a food passage.

Opposed proximal and distal supports expand from the branch stent to lock into the main stent tube and resist dislodgment at fenestration sites.

A screw-rod control mechanism switches between fast and fine stent release, shortening vascular delivery time while improving deployment control.

A flexible stent frame re-expands from neonatal to adult vessel sizes while preserving radial strength and axial flexibility.

A steerable transcatheter retrieval approach cuts native tissue and captures leaflet clips or cords to avoid open-heart valve therapy removal.

A monolithic iris with rotating ring and inward arms compresses and loads stents while cutting part count, assembly difficulty, and cost.

A retractable tapered tip shortens during implant delivery to pass the aortic valve and heart wall with less tissue interference.

Shape-memory struts widen a urethral stricture while an embedded drug wire delivers local BPH therapy and the anchor holds the implant in place.

Guided electromagnetic waves turn the stent into a sensing path, enabling non-invasive detection of fractures and restenosis without ionizing radiation.

A dual-layer nitinol stent improves vessel anchoring and flow diversion while lowering deployment force and reducing emboli migration.

A screw-expanded delivery member deploys and repositions prosthetic heart valves while reducing lumen occlusion during expansion.

Control wires and a guide catheter improve navigation through tortuous vessels while enabling precise replacement heart valve positioning.

An upstream accelerator and downstream decelerator create entrainment and pressure control in renal vessels to improve kidney perfusion.

A photopolymerized cured film changes protein adsorption on medical devices to suppress platelet and cell adhesion and reduce thrombosis risk.

An expandable embolic filter stabilizes cardiac valve catheter delivery while protecting aortic branch vessels without restricting blood flow.

Obtuse fin surfaces on a reconstrainment band retain stent position during delivery while reducing catching during removal and loading.

Impedance-driven sensing tracks scaffold biodegradation in vivo and wirelessly reports degradation data for delivery monitoring.

Heat-activated metallic wires let a spiral stent change shape after deployment, improving aneurysm flow diversion, occlusion, and placement in tortuous anatomy.

Flexible guide elements and end caps help the covering member pass over endoprosthesis edges smoothly, preventing snagging during deployment.

Separate multi-stranded cords secure a self-expandable prosthetic valve for controlled release, reducing suture entanglement and implantation trauma.

Radiopaque markers and a controlled sheath-release handle help align and deploy self-expanding stent valves accurately during minimally invasive implantation.

A split-sheath transcatheter delivery approach exposes the valve frame for accurate sinus placement while reducing vessel trauma and recovery burden.