Blood Vessels TRIZ Cases

A branch tube, valve, and ligature enable bloodless vascular anastomosis without prolonged clamping, reducing flow interruption risks.

Mechanically active tines use shape memory or elastic actuation to secure tissue-to-conduit coupling without sutures, reducing procedure time.

Porous multilayer grafts with macropores and biofragmentable layers support tissue ingrowth to improve small-vessel patency and remodeling.

A porous membrane stent graft restores lymph flow after node dissection, helping prevent lymphoedema and seroma while enabling drug delivery.

A tethered filter with upper and lower stabilizers captures emboli larger than 50 µm while anchoring in the aortic arch to protect secondary arteries.

Mechanically actuated tines secure tissue-to-device coupling without sutures, reducing procedural time and suture-related complications.

Mechanically active tines replace sutures to secure anatomical tissue and device couplings while reducing procedural time and complications.

An everting ring with distributed pins connects tissue quickly, reducing hand suturing while supporting reliable, reversible anastomosis.

Shape-memory or superelastic tines deploy from a connector to secure anatomical tissue without time-consuming suturing.

This case shows how double expansion creates elastic wavy fibrils in ePTFE grafts to address compliance mismatch and support patency.

A blood-activated membrane seals the vessel wall while filtering emboli, and closing filter ends helps prevent clot release during removal.

Distributed pins and an elastic ring enable rapid, adaptable tissue anastomosis without manual adjustment of hand-sewn sutures.

Anastomotic clip creates a permanent aorto-caval fistula to divert arterial blood into the venous system.

Silk fibroin patches resolve synthetic polymer inflammation by supporting endothelial cell adhesion to maintain vessel patency.

An insufflable prosthesis expands to secure graft walls without clamping or suturing.

An expansible cardiovascular graft absorbs left ventricular stroke volume during systole to replicate natural aortic compliance.

A porous deflector screen expands to conform to the aortic arch wall while capturing emboli particles.

A bio-absorbable impermeable stent prevents gastrointestinal leakage and sepsis risk by providing internal support during healing.

A flow streamliner guides separate blood streams from the superior and inferior vena cava to prevent head-on collision and reduce kinetic energy loss.

Variable pattern segmentation reduces stress recurrence while allowing selective expandability under pressure.

Dispersing ceramic particles within a polymer matrix improves mechanical strength and elasticity while maintaining biocompatibility for prosthetic implants.

Offset chuck mandrel rotation enables laser cutting of bifurcated medical fabrics, eliminating uneven edges and loose fibers from manual methods.

A nested biodegradable graft prevents lumen occlusion by maintaining structural integrity during tissue regeneration.

An anti-ferromagnetic nickel monoxide coating on a metal stent prevents image distortion in MRI scans while maintaining structural integrity.

An adjustable stenosis restrictor in the secondary member maintains high blood flow velocity, preventing occlusion and clotting caused by low flow rates.

An implantable graft integrates a delivery line and access port to infuse therapeutic agents directly into the bloodstream.

Resorbing multi-component sheath gradually adapts venous grafts to arterial pressures, preventing thrombotic occlusion and intimal hyperplasia.

Self-expanding metallic frameworks eliminate clamping requirements, reducing thrombosis risks in fragile tissues.

Cross-linked multi-layered amniotic membrane scaffolds reduce thrombosis and inflammatory responses while supporting cell growth.

A vascular prosthesis expands from a compressed state to anchor within transected body vessels using releasable loops on distinct strands.

A porous artificial blood vessel uses a segmented solvent system to adjust pore size and bulk density.

A vascular graft with a lateral opening enables straight onlay coupling to reduce torque and shear stress, preventing venous neointimal hyperplasia.

Polyurethane vascular grafts with controlled degradation rates support tissue regeneration while preventing thrombus formation.

Tapered edge portions on a biological tissue sheet position inward during tube formation to eliminate lumen protrusion, preventing thrombi and peel-off.

Superimposed conical anastomoses on a tubular prosthesis enable rapid, suture-free aortic connection, reducing surgery time and post-operative risks.

Independent layer movement reduces bending stiffness and prevents kinking while maintaining uniform thickness and high burst pressure.

A biodegradable vascular graft uses a polymer scaffold and heparin coating to support tissue remodeling.