Stents TRIZ Cases

An automated apparatus uses image processing to guide a dispenser head along stent paths, resolving bridging and meniscus imperfections during drug delivery.

Temporary colorant applied to contact lenses resolves insertion visibility contradictions, reducing eye damage risk.

Friction-based clamping prevents implant deformation during insertion, enabling precise positioning without blockage risks.

Segmented wire members in the support frame enable navigation through small vessels while maintaining structural integrity.

Slit-formed flaps expand radially to retrieve irregular objects without kinking thin-walled sheaths.

An enlarged stent segment anchors the prosthesis against migration in modified gastric geometry, allowing normal pyloric sphincter function and leak occlusion.

Sensor-equipped guide replaces complex imaging with direct pressure measurements to resolve diagnostic time versus accuracy trade-offs.

Opposing tensile forces compress the prosthesis, reducing outer dimensions to navigate vasculature while minimizing patient trauma.

A fenestrated stent-graft enables percutaneous subclavian artery access through a deployable lumen.

A branch prosthesis sealing sleeve rolls up into a tightly-wound coil to bear against an annular flange.

Segmented sleeves and an intermediary tip guard protect tissue during deployment, resolving placement accuracy versus trauma trade-offs.

Segmented delivery of a bifurcated graft via a steerable sheath minimizes femoral artery dissection risks associated with large traditional delivery systems.

Segmented radiopaque markers accommodate radial compression on catheters, preventing kinks that increase device profile and complicate positioning.

Compressive sheath-tip interaction enables precise catheter steering without pull wires, reducing device complexity and profile for safer valve delivery.

Nested flexible braid ensheathes clots for complete removal while minimizing vessel wall trauma during retrieval.

A stent with variable radial force along its longitudinal length uses adjustable strut angles and wall thickness to maintain patency.

A drug-coated balloon elutes antiproliferative agents directly to aortic valve tissues during inflation.

A composite ostial stent joins a self-expanding shape memory alloy section to a balloon-expandable metal tube for precise vascular placement.

Arcuate marker-mounting projections attach radiopaque markers to thrombectomy devices for precise vascular positioning.

Nesting stent peaks within balloon folds resolves the contradiction between reduced profile size and securement reliability.

Distinct austenite finish temperatures across Nitinol regions enable sequenced deployment, preventing premature expansion during vessel navigation.

Inflatable end balloon encloses shaft distal tip to distribute contact force, reducing tissue injury risk from point loading during microinvasive insertion.

A delivery system with a curved preloaded catheter maintains the guiding catheter shape during shipping and deployment.

Segmenting the braid into layers with varying porosity improves deliverability through microcatheters while maintaining effective aneurysm occlusion.

A retrieval catheter uses threaded shafts to translate a valve cover for recapturing partially deployed prosthetic heart valves.

A self-expanding tubular body with stents dilates and supports the iliac artery lumen.

A prosthetic heart valve delivery device uses a fine adjustment mechanism to slide the sheath relative to an outer stability shaft.

Nested core wires in the inflation lumen improve pushability by about 10% while preventing kinking during navigation through tortuous anatomy.

Swaging tantalum markers into stent frame cavities during martensite phase transformation prevents cracking and stress concentration.

A bidirectional balloon-expandable stent graft seals ruptured vessel portions using an integrated elliptical access portion.

Segmented guidewire channels maintain trackability during advancement and release wires upon inflation, eliminating long tail management.

A detachable link system uses expanding and contracting engaging members to secure an embolic coil during catheter insertion.

Thermal fusion bonds stents to woven grafts, eliminating labor-intensive sutures and adhesive damage.

Expandable percutaneous device anchors vascular prostheses via driven fasteners, treating venous valve insufficiency without surgical incisions.

Segmented packaging assembly with retention features allows manual gripping of sterile medical devices, reducing contamination risk during surgical transfer.

A stent engagement member uses projections separated by recesses to secure and move a stent along a core member within a catheter delivery system.

Replacing manual retraction, the motorized actuation system prevents jerky sheath movement and uneven deployment during esophageal stent placement.

A segmented ostomy system uses an anti-migration stent and rotating adapter to prevent leakage while enabling easy bag exchange.

Oppositely threaded proximal and distal junctions allow selective deployment direction, resolving placement precision issues in self-expanding stents.

A catheter with a pre-configured curved distal tip imparts rotational force to maintain device orientation during delivery.

Fenestrated thin film redirects emboli toward the descending aorta, preventing cerebral strokes without obstructing blood flow.

A modified pusher with a distal opening receives a tethered ferromagnetic bead to advance a shortened stent along a guide wire.

A prosthetic valve uses radially extending anchor elements to clamp tissue between the anchors and the annular body for secure positioning.

Extruded polymer melts stranded fibers to coalesce the braid matrix, resolving assembly complexity while maintaining coil pitch.

Additive manufacturing builds a polymer stent layer by layer, eliminating laser cutting waste while achieving optimal mechanical strength.

Expandable balloon catheter with echogenic tubular portion directs ultrasound energy to cavitate microbubbles for thrombus fragmentation.

Positioning sutures at different longitudinal zones secures the stent-graft interface while reducing delivery profile size.

A balloon catheter uses a pressure sensing element in a protective housing to measure internal pressure.