Intraluminal endoprosthesis for ramifying the ducts of a human or animal body and method of manufacture thereof
AssigneeCorvita Europe
InventorsJean-Pierre Georges Emile Dereume, Noureddine Frid
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Abstract
Intraluminal prosthesis comprising a tubular trunk element (1), which is radially expandable and compressible and which axially has a cavity (2) open at its two ends and divided into several axial channels (7, 8), and at least one branch element (13) which is radially expandable and compressible and which axially has a cavity open at its two ends, being, in its compression position, independent of the trunk element and having, in the expansion position, one end within one of the said axial channels and another end outside the trunk element.
Claims20
An intraluminal prosthesis for a ramification of vessels which carry body fluids in the human or animal body, comprising:
- a) a tubular trunk element which is radially expandable and compressible and which is to be applied in the expansion position in a principal vessel of the ramification, said tubular trunk element axially having two ends, several axial channels, and a cavity which is open at its two ends, said trunk element comprised of:
- a sleeve made of a flexible, biocompatible material which is impermeable to the body fluids passing through the ramification, and which forms said cavity and said several axial channels, said sleeve having diametrically opposite portions which are joined to one another in a manner to form said axial channels over at least a portion of the length of said sleeve which are sealed against body fluids from each other, and
- a radially expandable and compressible tubular stent having a circular cross-section along its entire length, which surrounds said sleeve and on which said sleeve is fixed at least at said ends of said tubular trunk element;
- and
- b) at least one tubular branch element which is radially expandable and compressible and which axially has two ends and a cavity open at its two ends, each branch element being, in its compression position, independent of the tubular trunk element,
- wherein said branch element has an end which is to be applied, in the expansion position, within one of the said axial channels of said sleeve, and another end situated outside said tubular trunk element, within a secondary vessel of the ramification, and
- wherein said sleeve includes said axial channels only in an axially central part of said sleeve whereby said axial channels of said sleeve do not extend to either of said trunk component's two ends.
A trunk element for use as an intraluminal prosthesis for a ramification of vessels in the human or animal body, comprising:
- a sleeve made of a flexible, biocompatible material which is impermeable to the body fluids passing through the ramification, said sleeve forming a cavity which is open at its two ends and at least two axial channels over at least a portion of said sleeve, said sleeve having diametrically opposite portions which are joined to one another in a manner to form said axial channels over at least a portion of the length of said sleeve which are sealed against body fluids from each other;
- and
- a radially expandable and compressible tubular stent having a circular cross-section along its entire length, which surrounds said sleeve and on which said sleeve is fixed at least at said ends of said tubular trunk element;
- wherein said trunk element is radially expandable and compressible and, in the expansion position, capable of being implanted in a principal vessel of the ramification, and wherein said sleeve includes said axial channels only in an axially central part of said sleeve whereby said axial channels of said sleeve do not extend to either of said trunk component's two ends.
A method for producing a radially expandable and compressible tubular trunk element said trunk element having two ends, to be used in an intraluminal prosthesis for a ramification of vessels which carry body fluids in the human or animal body, comprising:
- a) formation of a sleeve made of a flexible and biocompatible material, which is impermeable to the body fluids passing through the ramification;
- b) joining in a leaktight manner two opposite peripheral parts of the sleeve, in such a way as to form two axial channels which do not extend to either of said ends of said trunk element;
- and
- c) attachment of the sleeve, over at least part of its length, to at least one radially expandable and compressible tubular stent element.
Dependencies are inferred from the claim text.