Hybrid modular endovascular graft

• US 20060224232A1
• Filed: 04/01/2005
• Published: 10/05/2006
• Est. Priority Date: 04/01/2005
• Status: Abandoned Application

• Current Assignee: Endologix
• Original Assignee: Trivascular Incorporated
• Inventors: Chobotov, Michael V.
• Application Number:
  US11/097,718
• Publication Number:
  US 20060224232A1
• Time in Patent Office: Days
• US Class Current: 623/1.160
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/848 having means for fixation to the vessel wall, e.g. barbs
• CPC Class Codes: A61F 2/89 the wire-like elements comprising two or more adjacent rings flexibly connected by separate members
• CPC Class Codes: A61F 2002/067 modular
• CPC Class Codes: A61F 2002/8483 Barbs
• CPC Class Codes: A61F 2250/0003 having an inflatable pocket filled with fluid, e.g. liquid or gas

Abstract

A hybrid modular endovascular graft wherein a main graft is sized to span at least a portion of a target vessel lesion in a large percentage of patients. Graft extensions may be secured to the main graft to extend the main graft and provide a sealing function for some applications.

Claims

1. A hybrid modular endovascular graft system, comprising:

a main graft having a main fluid flow lumen therein, a distal leg of the main graft having a fluid flow lumen therein, a proximal anchor member disposed at a proximal end of the main graft and a distal anchor member disposed on a distal portion of the distal leg, the distal anchor member being axially separated from the proximal anchor member by a length of about 12.0 cm to about 14.0 cm; and

a graft extension having a fluid flow lumen disposed therein with the fluid flow lumen of the graft extension sealed to and in fluid communication with the fluid flow lumen of the distal leg.

2. The graft system of claim 1 wherein the fluid flow lumen of the graft extension is overlapped with the fluid flow lumen of the distal leg of the main graft.

3. The endovascular graft system of claim 1 wherein the proximal anchor member and distal anchor member comprise expandable stents.

4. The endovascular graft system of claim 1 wherein the graft extension further comprises a distal anchor member disposed at a distal end of the graft extension.

5. The endovascular graft system of claim 1 wherein the main graft further comprises a network of inflatable channels distributed over a main graft body section to provide structural rigidity and support to the main graft when the network of inflatable channels are in an inflated state.

6. The endovascular graft system of claim 5 wherein wall portions of the main graft and graft extension comprise layered ePTFE.

7. The graft system of claim 1 wherein the main graft comprises a bifurcated graft and further comprises a second distal leg having a fluid flow lumen in fluid communication with the main fluid flow lumen and a second distal anchoring member disposed on a distal portion of the second distal leg.

8. The graft system of claim 7 further comprising a second graft extension having a fluid flow lumen disposed therein which is in fluid communication with the fluid flow lumen of the second distal leg.

9. A method of treating the vasculature of a patient, comprising:

providing a graft system, comprising;

a main graft having a main fluid flow lumen therein, a distal leg having a fluid flow lumen therein, a proximal anchor member disposed at a proximal end of the main graft and a distal anchor member disposed on a distal portion of the distal leg, the distal anchor member being axially separated from the proximal anchor member by a distance of about 12.0 cm to about 14.0 cm, and

a graft extension having a fluid flow lumen disposed therein with the fluid flow lumen of the graft extension sealable to the fluid flow lumen of the distal leg;

positioning the main graft within the patient'"'"'s vasculature and anchoring the proximal anchor member in the patient'"'"'s aorta and anchoring the distal anchor member in an iliac artery of the patient;

positioning the graft extension relative to the main graft such that the fluid flow lumen of the graft extension is sealed with the fluid flow lumen of the distal leg.

10. The method of claim 9 wherein the graft extension further comprises a distal anchor member disposed at a distal end of the graft extension and further comprising anchoring the distal anchor member of the graft extension to the patient'"'"'s vasculature.

11. The method of claim 9 wherein the main graft further comprises a network of inflatable channels distributed over a main graft body section and further comprising inflating the network of inflatable channels.

12. The method of claim 9 wherein the main graft comprises a bifurcated graft and further comprises a second distal leg having a fluid flow lumen in fluid communication with the main fluid flow lumen and the graft system further comprises a second graft extension having a fluid flow lumen disposed therein and further comprising anchoring the second distal anchor member and sealing the fluid flow lumen of the second graft extension to the fluid flow lumen of the second distal leg.

13. A hybrid endovascular graft, comprising:

a main graft having a main fluid flow lumen therein, a distal leg of the main graft having a fluid flow lumen therein, a proximal anchor member disposed at a proximal end of the main graft and a distal anchor member disposed on a distal portion of the distal leg, the distal anchor member being axially separated from the proximal anchor member by a length of about 11.0 cm to about 15.0 cm.

14. The hybrid modular endovascular graft of claim 13 wherein the distal anchor member is axially separated from the proximal anchor member by a length of about 12.0 cm to about 14.0 cm.

15. A method of sizing a main graft of a hybrid modular endovascular graft system, comprising:

selecting a group of patients to be treated;

sizing the axial separation of the proximal anchor member and ipsilateral distal anchor member of a main graft such that the axial separation is no shorter than the separation between the renal arteries and the proximal most anchor point in the iliac artery or arteries of a patient who has the longest such separation, and no longer than the separation between the renal arteries and hypogastric artery or arteries of a patient who has the shortest such separation.

16. The method of claim 15 wherein the axial separation of the proximal anchor member and ipsilateral distal anchor member of a main graft is selected to be about 11.0 cm to about 15.0 cm.

17. The method of claim 16 wherein the axial separation of the proximal anchor member and ipsilateral distal anchor member of a main graft is selected to be about 12.0 cm to about 14.0 cm.