Stents TRIZ Cases

Segmented rings expand via Seldinger wire delivery to create branched vessel connections, reducing procedure time and tissue damage.

Axially movable tube and funnel simplify loading procedures, reducing patient morbidity during transcatheter implantation.

A composite expandable medical balloon uses a coextruded base balloon with an inner elastomeric layer and outer thermoplastic layer reinforced by a fiber braid.

A three-layer urethral stent uses a silk fibroin outer membrane to carry anti-stenosis drugs while an inner chitosan coating provides antibacterial protection.

A one-piece endoluminal prosthesis uses identical stent segments in branching portions to ensure uniform circumferential rigidity.

Suction cups and electrocautery coils anchor implants in coronary arteries, resolving unstable access during minimally invasive bypass procedures.

Sub-100nm phosphorylcholine coatings on braided stent filaments prevent platelet adhesion and lower thrombosis risk.

A one-way valve across the aneurysm neck allows fluid removal via catheter suction, reducing rupture risk and intracranial pressure.

Nested knobs and threaded rods enable rapid valve deployment, reducing stay time and operational complexity.

A left ventricular outflow tract stent uses an air bag component to pre-expand the deployment site for accurate positioning.

Film-based hinge fingers segment the sleeve to reduce friction and control deployment of self-expanding endoprostheses.

Tapering strut profiles distribute stress uniformly, tripling reaction force while reducing restenosis risks in coronary implants.

Notched carrier members and elongate members enable repositioning and removal of expandable occlusion devices.

Computerized stent planning workflow generates virtual stents from 3D lesion images for precise positioning guidance.

Absorbable vascular filter prevents pulmonary embolism by capturing emboli, then degrades to eliminate deep vein thrombosis risk.

A one-piece stent implanter delivers a cautery tip and inner pipe to deploy a stent directly into tissue.

Looped stent ends and offset welds prevent fatigue failure, while composite wires enhance radiographic visibility for precise fluoroscopic placement.

Shape memory anchors transition upon induction heating to secure aortic devices, preventing migration in weakened tissue.

Deformed peak connectors extend toward valleys to increase apex spacing, resolving the trade-off between radial strength and longitudinal flexibility.

Segmented balloons protect complex renal bifurcations by dynamically controlling occlusion to enable safe interventional device delivery.

Nested delivery catheter allows recapture and repositioning of the prosthetic valve to resolve migration risks during minimally invasive heart procedures.

A machine learning system calculates signed distance fields from medical images to generate accurate device deployment simulations.

Segmented nested sheaths reduce procedural trauma by enabling transseptal delivery instead of invasive transapical access.

A magnetic handle assembly translates rotary collar torque to rotate an inner cannula, preventing premature prosthesis release during vascular procedures.

An everted traction tube retracts a constraining sheath to deploy self-expanding stents without axial shortening.

A vascular stent features a protruding section that abuts the aneurysm ostium to provide mechanical scaffolding support.

Coaxially disposed articulable beaks and scoopulae handle multiple tissue types during single insertion, resolving procedural complexity.

Dual inflatable balloons create a watertight seal against rectal walls, preventing liquid leakage during transanal irrigation procedures.

A transcatheter valve prosthesis uses circumferential grooves and projections to anchor tissue within the tubular body.

Loose graft folds allow the side arm to angle freely, resolving catheterization difficulties in complex thoracic anatomy.

An optical scope device provides direct visualization of target sites within digestive tract sections during endoscopic procedures.

Balloon pressurization preserves folded morphology to prevent strut fractures and ensure uniform expansion of polymer scaffolds.

A transcatheter aortic valve prosthesis features a segmented frame with enlarged access cells for coronary intervention pathways.

Segmented outer sheath junctions allow bidirectional stent expansion, resolving placement precision issues by enabling proximal-to-distal deployment sequences.

Delivery catheter with a guidewire port and collapsible sheath enables rapid exchange stent deployment.

A string-rod constraining mechanism maintains radial constraint on a medical device distal portion during delivery.

Extracting the orientation marker to the pusher preserves structural integrity and minimizes delivery profile while ensuring precise alignment.

A vascular shunt frame sealing covering incorporates a nickel-titanium alloy shaping component to ensure close adherence to the main body stent.

Radial expansion pulls a tension member to close the fenestration, reducing space requirements for placement at bifurcations.

A synthetic resin stent uses a diameter expansion mechanism to hold an expanded state.

Frangible obturators burst under pressure to create openings, preventing systemic dispersion during advancement and retraction.

A threading support facility uses a sub-guide channel to ease manual insertion of medical objects, reducing time and preventing damage during the process.

Compressible core and capsule form fluid-tight seal around variable guidewires, preventing premature deflation.

A bioactive material coated stent uses matched surface energy densities to enhance adhesion and elution.

Limiting units restrict axial and radial motion of braided wire heads in covered stents, preventing tilting and ensuring complete deployment.

Segmented balloon catheters apply localized inflation pressures to disrupt atherosclerotic lesions, preventing persistent vessel-wall distention and dissection.

Inflatable balloon features biodegradable surface protrusions that penetrate vessel walls to release therapeutic agents directly into the tissue.

Expandable elements undergo plastic deformation to widen the stent, accommodating growing vessel sizes without replacement.

A pre-loaded delivery device uses an extension sheath to deploy stent grafts into internal iliac arteries.