Intravascular graft and catheter

• US 5,609,628 A
• Filed: 04/20/1995
• Issued: 03/11/1997
• Est. Priority Date: 04/20/1995
• Status: Expired due to Fees

• Current Assignee: Victor J. Keranen
• Original Assignee: Victor J. Keranen
• Inventors: Keranen, Victor J.
• Primary Examiner(s): SHAY, RANDY CITRIN
• Application Number:
  US08/425,833
• Time in Patent Office: 691 Days
• Field of Search: 623/1, 623/11, 623/12, 604/96, 604/104, 604/281, 606/108, 606/157, 606/158, 606/191, 606/194, 606/195, 606/198, 606/200
• US Class Current: 623/1.13
• CPC Class Codes: A61B 17/12022 Occluding by internal devices, e.g. balloons or releasable wires plugging an opening in the wall of an organ A61B17/0057; occluders for the cervical canal A61F6/146; vas deferens occluders A61F6/20
• CPC Class Codes: A61B 17/12118 for positioning in conjunction with a stent
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/82 Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95; for closing wounds, or holding wounds closed A61B17/04 - A61B17/115; dilators A61M29/00
• CPC Class Codes: A61F 2/848 having means for fixation to the vessel wall, e.g. barbs
• CPC Class Codes: A61F 2/856 Single tubular stent with a side portal passage
• CPC Class Codes: A61F 2/92 Stents in the form of a rolled-up sheet expanding after insertion into the vessel , e.g. with a spiral shape in cross-section
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/954 for placing stents or stent-grafts in a bifurcation
• CPC Class Codes: A61F 2/97 the outer sleeve being splittable
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2002/30545 for adjusting a diameter
• CPC Class Codes: A61F 2002/825 having longitudinal struts
• CPC Class Codes: A61F 2002/9534 for repositioning of stents
• CPC Class Codes: A61F 2220/0008 Fixation appliances for connecting prostheses to the body
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2250/001 for adjusting a diameter

Abstract

An intravascular graft for restoring normal blood flow in vessels, or for defining new blood flow pathway in arteries includes a proximal collar to aid in anchoring the graft in place. The graft may contain defects in the graft wall to allow blood flow therethrough. Struts encircling the graft provide structural stability. Additional elements which aid in anchoring the graft in place include barbed collars and graft walls which contain ridges. Additional elements to aid in placement include a drawstring associated with the graft collar. A graft designed for use with vessels configured similarly to the basilar artery contains a cap at the distal end of the graft. A catheter to facilitate placement of intravascular grafts is also disclosed.

Claims

1. An intravascular graft comprising:

an elongate body having a flexible wall defining a tubular passageway and having opposite proximal and distal ends, said body proximal end open to fluid flow therethrough; and

a cap having opposite proximal and distal cap surfaces, said proximal cap end attached to and obstructing said body distal surface and preventing fluid flow through said body distal end,

said cap proximal surface having a diameter greater than that of said elongate body.

2. An intravascular graft according to claim 1, wherein said cap is a hemispherical cap having a rounded distal surface and a planar proximal surface.

3. An intravascular graft according to claim 1, having a defect formed in said wall.

4. An intravascular graft according to claim 1, having two generally circumferentially opposite defects formed in said tubular wall.

5. An intravascular graft according to claim 1, further comprising a plurality of generally circular struts encircling said wall.

6. An intravascular graft according to claim 1, further comprising a filament affixed to said cap.

7. An intravascular graft comprising:

an elongate body having a flexible wall defining a tubular passageway and having opposite proximal and distal ends, said body proximal and open to fluid flow therethrough and said tubular wall having two generally circumferentially opposite defects formed therein; and

a cap having opposite proximal and distal cap ends, said proximal cap end attached to said body distal end and preventing fluid flow through said body distal end,

said cap having a diameter greater than that of said elongate body.

8. An intravascular graft according to claim 7, wherein said cap is a hemispherical cap having a rounded distal surface and a planar proximal surface.

9. An intravascular graft according to claim 7, further comprising a plurality of generally circular struts encircling said wall.

10. An intravascular graft according to claim 7, further comprising a filament affixed to said cap.

11. An intravascular graft comprising:

an elongate body having a flexible wall defining a tubular passageway and having opposite proximal and distal ends, said body proximal end open to fluid flow therethrough and said tubular wall having two generally circumferentially opposite defects formed therein; and

a hemispherical cap having a planar proximal surface and a rounded distal surface, said proximal surface attached to said body distal end and preventing fluid flow through said body distal end,

said hemispherical cap having a diameter greater than that of said elongate body.

12. An intravascular graft according to claim 11, further comprising a plurality of generally circular struts encircling said wall.

13. An intravascular graft according to claim 11, further comprising a filament affixed to said hemispherical cap.