Tubular grafts and methods for use

Patent metadata

Field	Value
Publication number	US-2026047918-A1
Application number	US-202519370600-A
Country	US
Kind code	A1
Filing date	Oct 27, 2025
Priority date	May 3, 2023
Publication date	Feb 19, 2026
Grant date	—

Abstract

Prosthetic grafts are provided that include a tubular body formed from fabric comprising an open proximal end, an open distal end, and a passage extending along a central axis between the proximal and distal ends, wherein the tubular body comprises a first section extending from the proximal end towards the distal end having a first diameter, and a second section at the distal end having a second diameter greater than the first diameter to facilitate folding the second section over an adjacent region of the first section, e.g., to provide a thicker distal end having a substantially uniform diameter. Prosthetic grafts are provided, e.g., for implantation during Ross procedures.

First claim

1 . A prosthetic graft, comprising:
a tubular body formed from fabric comprising an open proximal end, an open distal end, and a passage extending along a central axis between the proximal and distal ends, wherein the tubular body comprises a first section extending from the proximal end towards the distal end having a first diameter and an axial first length, and a second section at the distal end having a second diameter greater than the first diameter to facilitate folding the second section over an adjacent region of the first section, the second section having an axial second length shorter than the first length.

2 . The prosthetic graft of claim 1 , wherein the tubular body comprises a transition between the first section and the second section.

3 . The prosthetic graft of claim 2 , wherein the transition has one of a frustoconical shape, a flared shape, and a tapered shape.

4 - 6 . (canceled)

7 . The prosthetic graft of claim 1 , wherein the first length is between about fifty and three hundred centimeters (50-300 cm) and wherein the second length is between about five and twenty millimeters (5.0-20 mm).

8 - 10 . (canceled)

11 . The prosthetic graft of claim 1 , further comprising an annular skirt attached to the graft adjacent the second section.

12 - 40 . (canceled)

41 . A prosthetic graft, comprising:
a tubular body formed from fabric comprising an open proximal end, an open distal end, and a passage extending along a central axis between the proximal and distal ends; a sewing cuff extending around the perimeter of the proximal end; and a plurality of linear markings spaced apart from one another around a circumference of the tubular body, each linear marking extending along a wall of the tubular body at least partially between the proximal and distal ends.

42 . The prosthetic graft of claim 41 , further comprising one or more enclosed markings, each marking surrounding a region on the wall of the graft to facilitate performing an anastomosis at the region.

43 . The prosthetic graft of claim 41 , wherein the one or more enclosed markings comprise a single circular marking on the wall of the graft.

44 . The prosthetic graft of claim 41 , wherein the one or more enclosed markings comprise two enclosed markings surrounding respective regions on the wall of the tubular wall to facilitate performing an anastomosis at the regions.

45 . The prosthetic graft of claim 41 , wherein the one or more enclosed markings comprise three enclosed markings surrounding respective regions on the wall of the tubular wall to facilitate performing an anastomosis at the regions.

46 . The prosthetic graft of claim 44 , wherein the enclosed markings are spaced apart from one another around a circumference of the tubular body.

47 . The prosthetic graft of claim wherein the enclosed markings are spaced apart from one another at locations approximating locations of coronary arteries relative to an aortic root.

48 . (canceled)

49 . The prosthetic graft of claim 43 , wherein each enclosed marking comprises a weakened region of the wall to facilitate removal of material within the enclosed marking.

50 . (canceled)

51 . The prosthetic graft of claim 41 , wherein the linear markings are spaced apart from one another around the circumference of the tubular body.

52 . The prosthetic graft of claim 51 , wherein the linear markings comprise three linear markings spaced apart about one hundred degrees (120°) away from each other around the circumference.

53 . The prosthetic graft of claim 41 , wherein the linear markings extend an entire distance between the proximal and distal ends.

54 . The prosthetic graft of claim 41 , wherein the linear markings are on both an inner surface and an outer surface of the tubular body.

55 . The prosthetic graft of claim 41 , wherein the sewing cuff is substantially rigid.

56 . The prosthetic graft of claim 41 , wherein the sewing cuff is biased to an expanded condition but may be compressed to a contracted condition to facilitate introduction into the native annulus.

57 - 81 . (canceled)

82 . A method for replacing an aortic valve within a heart of a patient, comprising:
providing a prosthetic graft including a tubular body formed from fabric comprising an open proximal end, an open distal end, and a passage extending along a central axis between the proximal and distal ends, a sewing cuff extending around the perimeter of the proximal end, and a plurality of linear markings spaced apart from one another around a circumference of the tubular body; attaching a prosthetic valve to the prosthetic graft to provide a composite inclusion graft; removing the aortic root adjacent a valve annulus of the aortic valve to create a separated end of the aorta; excising the native aortic valve from the valve annulus; introducing the composite inclusion graft such that the linear markings are aligned with commissures of the valve annulus; securing the sewing cuff adjacent the valve annulus; and securing the distal end of the tubular body to the separated end of the aorta.

83 - 103 . (canceled)

Assignees

• Univ Leland Stanford Junior

Inventors

• Woo Y Joseph
• Zhu Yuanjia

Classifications

• A61F2250/0097

  Visible markings, e.g. indicia · CPC title

• A61F2250/0039

  differing in diameter · CPC title

• A61F2250/0037

  differing in height or in length · CPC title

• A61F2250/0019

  differing in hardness, e.g. Vickers, Shore, Brinell · CPC title

• A61F2230/0069

  cylindrical · CPC title