TOTAL AORTIC ARCH RECONSTRUCTION GRAFT

• US 20100042201A1
• Filed: 08/13/2009
• Published: 02/18/2010
• Est. Priority Date: 08/18/2008
• Status: Active Grant

• Current Assignee: Hisham M.F. Sherif
• Original Assignee: Hisham M.F. Sherif
• Inventors: SHERIF, Hisham M. F.
• Granted Patent: US 8,845,715 B2
• Time in Patent Office: Days
• US Class Current: 623/1.130
• CPC Class Codes: A61F 2/06 Blood vessels
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2002/8483 Barbs
• CPC Class Codes: A61F 2002/8486 provided on at least one of the ends

Abstract

A total aortic arch reconstruction graft, including

• • a) a first, hollow cylindrical segment in the shape of an aortic arch and adapted to be joined to a patient'"'"'s ascending aorta, and including three side hollow cylindrical branches in communication therewith and adapted to be joined to a patient'"'"'s left subclavian artery, left common carotid artery and innominate artery, respectively, and a fourth hollow cylindrical branch adapted to be joined to a heart-lung machine;
  • b) a second, hollow cylindrical segment having a first end being joined to the second end of the first segment, and a second end adapted to be inserted into the descending aorta of a patient, the second segment having an expandable outer wall covered with an expandable open-mesh stent having means for attaching the second segment to an internal surface of a patient'"'"'s descending aorta,
  • c) a collar having a diameter slightly larger than the diameter of said first segment, the collar located at a juncture where the first end of the second segment is joined to the second end of the first segment, with the collar having means for attachment to the open end of a patient'"'"'s descending aorta. A surgical procedure for total replacement of the aortic arch of a patient is also disclosed.

Claims

1. A total aortic arch reconstruction graft, comprising

a) a first, hollow cylindrical segment in the shape of an aortic arch and having two opposed ends and a pre-determined diameter,

said first segment having three hollow cylindrical side branches in communication therewith, said three side branches in the same or substantially the same plane with one another and adapted to be joined to a patient'"'"'s left subclavian artery, left common carotid artery and innominate artery, respectively,

said first segment having a fourth hollow cylindrical side branch adapted to be joined to a perfusion device;

a first end of said first segment being adapted to be joined to the ascending aortic wall of a patient;

b) a second, hollow cylindrical segment having two opposed ends,

a first end of said second segment being joined to the second end of said first segment,

a second end of said second segment adapted to be inserted into the descending aorta of a patient, said second segment having an expandable wall whose outer surface is at least partially covered with an expandable open-mesh stent, said stent having means for attaching said second segment to an internal surface of a patient'"'"'s descending aorta,

an initial diameter of said second end of said second segment being smaller than the diameter of said first segment;

c) a collar having a diameter larger than the diameter of said first segment, said collar located at a juncture where the first end of said second segment is joined to the second end of said first segment, and having means for attaching said collar to an open end of a patient'"'"'s descending aorta.

2. The graft of claim 1, wherein said means for attaching said second segment is a member selected from the group consisting of barbs and tines.

3. The graft of claim 1, wherein said means for attaching said collar comprise a plurality of non-absorbable sutures fixed at points around an outside circumference of said collar.

4. The graft of claim 3, wherein said collar has from 6-18 non-absorbable sutures.

5. The graft of claim 1, wherein said first and second segments are both made of a material selected from the group consisting of nylon, polyester, polyolefin, polyurethane, polytetrafluoroethylene, and mixtures thereof.

6. The graft of claim 5, wherein the polyester is a polyester selected from the group consisting of woven polyester, double-velour woven polyester, knitted polyester, albumen coated woven polyester and albumen coated knitted polyester.

7. The graft of claim 1, wherein said collar has a width of from 1 to 2 cm and a thickness of from 2 to 5 mm.

8. The graft of claim 1, wherein said collar comprises a polyester felt.

9. The graft of claim 1, wherein said first segment is 25 to 34 cm in length.

10. The graft of claim 1, wherein a diameter of said hollow cylindrical branches is each from 8 to 12 mm.

11. The graft of claim 1, wherein a length of said hollow cylindrical branches ranges from 15 to 20 cm.

12. The graft of claim 1, wherein a diameter of said first segment is 24 to 30 mm.

13. The graft of claim 1, wherein said fourth side branch is located at an angle of from 85°

to 95°

, preferably 89°

to 91° and

still more preferably 90°

from the plane of the first three side branches.

14. The graft of claim 13, wherein said angle is from 89°

to 91°

.

15. The graft of claim 14, wherein said angle is 90°

.