Intravascular graft and catheter

• US 5,662,702 A
• Filed: 08/30/1996
• Issued: 09/02/1997
• 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:
  US08/698,449
• Time in Patent Office: 368 Days
• Field of Search: 623/1, 623/11, 623/12, 606/108, 606/191, 606/194, 606/195, 606/198, 604/96, 604/104, 604/281
• US Class Current: 623/1.23
• 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 opposite proximal and distal ends, and having a gap formed in and extending the length of said elongate body;

a proximal collar extending generally radially outwardly from said body proximal end;

a distal collar extending generally radially outwardly from said body distal end having a first tip and a second tip, said first tip having a first aperture formed therein and said second tip having a second aperture formed therein; and

a removable drawstring having a first end and a second end, said drawstring passing through said first aperture and said second aperture.

2. An intravascular graft according to claim 1, further comprising a projection extending radially from said removable drawstring and positioned between an end of said drawstring and one of said first and second tips.