IP Library › Patent Application 13841341
Patent Application
App. No. 13/841,341

BIFURCATED SIDE-ACCESS INTRAVASCULAR STENT GRAFT

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Quick Facts
Patent No.
US None
App. No.
13/841,341
Abstract

A bifurcated intravascular stent graft comprises primary stent segments and a primary graft sleeve, forming a main fluid channel and having a side opening therethrough. An external graft channel formed on the primary graft sleeve has a first end communicating with the side opening and an open second end outside the primary graft sleeve, thereby providing a branch flow channel from the main channel out through the side opening and external graft channel. The primary stent segments and graft sleeve engage an endoluminal surface of a main vessel and form substantially fluid-tight seals. The stent graft further comprises a secondary stent graft, which may be positioned partially within the external graft channel, through the open second end thereof, and partially within a branch vessel. The secondary stent graft engages the inner surface of the external graft channel and the endoluminal surface of the branch vessel, thereby forming substantially fluid-tight seals.

Claims (45)

1 . Prosthetic conduit system comprising:

an expandable main conduit having a first open end, a second open end, a main conduit wall extending therebetween, an outer conduit surface, and an inner conduit surface;

an expandable secondary conduit having a first open end, a second open end, a secondary wall extending therebetween, and an attachment portion extending at an angle of less than 90 degrees from the secondary wall when in a deployed state; and

wherein at least a portion of the secondary conduit is sized to fit inside the main conduit.

2 . The prosthetic conduit system of claim 1 , wherein the main conduit wall comprises at least one opening and at least a portion of the attachment secondary conduit portion extends through the at least one opening.

3 . The prosthetic conduit system of claim 2 , wherein the main conduit includes an internal channel having an inner surface, an outer surface, a first open end located within the main conduit, and a second open end at the opening in the main conduit wall;

an expandable secondary conduit having a first open end, a second open end, a secondary conduit wall extending therebetween, and an attachment portion extending at an angle of less than 90 degrees from the secondary conduit wall when in a deployed state; and

wherein at least a portion of the secondary conduit is sized to fit inside the internal channel and through the opening in the main conduit wall.

4 - 7 . (canceled)

8 . The prosthetic conduit system of claim 3 , wherein the expandable main conduit is balloon expandable.

9 . The prosthetic conduit system of claim 3 , wherein the expandable main conduit is self-expanding.

10 . (canceled)

11 . The prosthetic conduit system of claim 3 , wherein the main conduit comprises a graft material.

12 . The prosthetic conduit system of claim 3 , wherein the secondary conduit comprises a graft material.

13 . The prosthetic conduit system of claim 11 , wherein the graft material comprises ePTFE.

14 . The prosthetic conduit system of claim 12 , wherein in the graft material comprises ePTFE.

15 . The prosthetic conduit system of claim 3 , wherein the expandable main conduit comprises a first stent segment at the first open end and a second stent segment at the second open end.

16 . The prosthetic conduit system of claim 15 , wherein the first stent segment and the second stent segment comprise a single stent extending from the first open end to the second open end.

17 . The prosthetic conduit system of claim 3 , wherein the attachment portion comprises a flange.

18 . The prosthetic conduit system of claim 15 , wherein the first stent segment and the second stent segment comprise nitinol.

19 . The prosthetic conduit system of claim 3 , wherein the expandable secondary conduit comprises a first stent segment at the first open end and a second stent segment at the second open end.

20 . The prosthetic conduit system of claim 19 , wherein the first stent segment and the second stent segment comprise a single stent extending from the first open end to the second open end.

21 . The prosthetic conduit system of claim 20 , wherein the first stent segment and the second stent segment comprise nitinol.

22 . Prosthetic conduit system comprising:

an expandable main conduit having a first open end, a second open end, a main conduit wall extending therebetween, at least one opening through the main conduit wall, and an internal channel having an inner surface, an outer surface, a first open end located within the main conduit, and a second open end at the opening in the wall;

an expandable secondary conduit having a first open end, a second open end, a secondary conduit wall extending there between, and an attachment portion extending at an angle of less than 90 degrees from the secondary conduit wall when in a deployed state; and

wherein at least a portion of the secondary conduit is located inside the internal channel.

23 . The prosthetic conduit system of claims 22 , wherein the attachment portion is in contact with the internal channel.

24 - 25 . (canceled)

26 . The prosthetic conduit system of claim 22 , wherein the attachment portion is in contact with the first open end of the internal channel.

27 . (canceled)

28 . The prosthetic conduit system of claim 22 , wherein the expandable main conduit is balloon expandable.

29 . The prosthetic conduit system of claim 22 , wherein the expandable main conduit is self-expanding.

30 . (canceled)

31 . The prosthetic conduit system of claim 22 , wherein the main conduit comprises a graft material.

32 . The prosthetic conduit system of claim 22 , wherein the secondary conduit comprises a graft material.

33 . The prosthetic conduit system of claim 31 , wherein the graft material comprises ePTFE.

34 . The prosthetic conduit system of claim 32 , wherein in the graft material comprises ePTFE.

35 . The prosthetic conduit system of claim 22 , wherein the expandable main conduit comprises a first stent segment at the first open end and a second stent segment at the second open end.

36 . The prosthetic conduit system of claim 35 , wherein the first stent segment and the second stent segment comprise a single stent extending from the first open end to the second open end.

37 . The prosthetic conduit system of claim 22 , wherein the attachment portion comprises a flange.

38 . The prosthetic conduit system of claim 35 , wherein the first stent segment and the second stent segment comprise nitinol.

39 . The prosthetic conduit system of claim 22 , wherein the expandable secondary conduit comprises a first stent segment at the first open end and a second stent segment at the second open end.

40 . The prosthetic conduit system of claim 39 , wherein the first stent segment and the second stent segment comprise a single stent extending from the first open end to the second open end.

41 . The prosthetic conduit system of claim 40 , wherein the first stent segment and the second stent segment comprise nitinol.