Back to results
US 8,999,472 B2Granted
Tubular conduit
AssigneeVascular Flow Technologies Limited
InventorsRobert Gordon Hood, Craig McLeod Duff
Life of this patent
Estimating the term…
Abstract
A tubular conduit is disclosed. The tubular conduit comprises a tubular portion made from a flexible material and an axially extending external helical formation located around the outside of the tubular portion. The external helical formation is for supporting the tubular portion. Optionally the tubular portion also comprises an axially extending internal helical protrusion, which imparts a helical flow to a fluid passing through the tubular portion. It is preferred that the tubular conduit is a vascular graft.
Claims15
A tubular conduit comprising:
- a tubular portion comprising an inside and an outside and being made from a flexible material;
- an axially extending external helical formation located around the outside of the tubular portion for supporting the tubular portion;
- and
- an axially extending internal helical protrusion located around the inside of the tubular portion for imparting a helical flow to a fluid passing through the tubular portion, having a different helix angle from the external helical formation;
- wherein the axially extending internal helical protrusion comprises a section of the tubular portion deformed by an axially extending deformation helix;
- and
- wherein the external helical formation and the axially extending deformation helix are made from the same material and are fused together.
4 more elements
Dependencies are inferred from the claim text.