Intraluminal graft device, system and method

• US 4,787,899 A
• Filed: 12/10/1986
• Issued: 11/29/1988
• Est. Priority Date: 12/09/1983
• Status: Expired due to Term

• Current Assignee: Lifeport Sciences LLC (Acacia Research Corporation)
• Original Assignee: Harrison M Lazarus
• Inventors: Lazarus, Harrison M.
• Primary Examiner(s): Apley, Richard J.
• Assistant Examiner(s): Isabella, David J.
• Application Number:
  US06/940,907
• Time in Patent Office: 720 Days
• Field of Search: 128/303 R, 128/334 R, 128/334 C, 623/1
• US Class Current: 623/1.11
• 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 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2002/3008 radio-opaque, e.g. radio-opaque markers
• CPC Class Codes: A61F 2002/30451 soldered or brazed or welded
• CPC Class Codes: A61F 2002/8486 provided on at least one of the ends
• CPC Class Codes: A61F 2220/0058 soldered or brazed or welded
• CPC Class Codes: A61F 2250/0098 radio-opaque, e.g. radio-opaque markers
• CPC Class Codes: A61M 25/10 Balloon catheters A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02; inflatable balloons for placing stents or stent-grafts A61F2/958 ; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00

Abstract

An intraluminal grafting system includes a hollow graft which has a plurality of staples adapted proximate its proximal end. The system includes a guide for positioning the proximal end of the graft upstream in a lumen which may be a blood vessel or artery. The back of the guide has a cavity into which the proximal end of the graft is retained. A rod extends from the cavity to exterior the lumen for manipulation by the user. A tube is positioned over the rod to extend from the cavity and through the graft to exterior the lumen. The tube has an inflatable membrane proximate the cavity end thereof which is in communication via a channel with inflation and deflation means located exterior the lumen. With the inflatable membrane deflated, the guide means is positioned into the lumen and manipulated to a desired location. The inflatable membrane is inflated to place a force against the staples as the guide is manipulated by the rod away from the graft. The force exerted by the inflatable membrane forces the staples into the lumen.

Claims

1. A system for intraluminally engrafting in a fluid conducting corporeal lumen comprising:

a hollow graft of preselected cross-section and length and having a proximal end for placement upstream within said lumen, said graft being deformable to substantially conform to the interior surface of said lumen;

a plurality of staples adapted proximate the proximal end of said graft and extending therethrough for stapling said graft to and within said lumen;

placement means for emplacing said graft into said lumen, for positioning it at a preselected position within said lumen, and for causing at least one of said staples to engage said lumen, said placement means including;

guide means having a front and back and sized for positioning in said lumen, said guide means having road means adapted to the back thereof sized in length to extend exterior said lumen for manipulation by the user, said guide means back having a cavity formed therein with said rod being centrally positioned within said cavity wherein said proximal end of said graft is retained within said cavity for purposes of positioning said graft in said lumen; and

operation means for removing said graft from said guide means and for positioning said staples into said lumen;

said operation means including a hollow tube for slideable positioning over said rod and sized in length to extend from said cavity to exterior said lumen, said tube having an inflatable membrane proximate the cavity end of said tube, and a channel in communication with said inflatable membrane and extending along the length of said tube, and inflation means connectable to said channel exterior said lumen for inflating and deflating said inflatable membrane.

2. The system of claim 1 wherein said guide means is substantially cylindrical in shape and wherein said guide means front has a rounded edge surface.

3. The system of claim 2 wherein said graft is substantially cylindrical in shape and is larger in cross-section than said guide means, wherein said guide means is made of a material so that said staples at the proximal end of said graft releasably engage the surface of said cavity, and wherein said inflatable membrane when inflated exerts force against said staples so that said guide means is released therefrom upon upstream movement of said guide means and so that said staples are thereupon urged into said lumen.

4. The system of claim 3 wherein each of said staples has a lumen engaging member exterior said graft which member is angulated in a downstream direction and which member has a distal end for engaging said lumen, said lumen engaging member being retained within said cavity with said proximal end of said graft during positioning within said lumen.

5. A method for artificially and intraluminally engrafting in a fluid conducting corporeal lumen comprising:

making an access to and an opening in a corporeal lumen;

providing apparatus for intraluminal engrafting which apparatus includes;

a hollow graft of preselected cross-section and length and having a proximal end for placement upstream within said lumen, said graft being deformable to substantially conform to the interior surface of said lumen,

a plurality of staples adapted proximate the proximal end of said graft and extending therethrough for stapling said graft to and within said lumen,

guide means having a back with a cavity formed therein and a front, and sized for positioning in said lumen, said guide means having rod means centrally positioned in and secured within said cavity and sized in length to extend exterior said lumen for manipulation, said guide means having means to retain said proximal end of said graft for positioning of said graft in said lumen,

a hollow tube for slideable positioning over said rod and sized in length to extend from said cavity to exterior said lumen, said tube having an inflatable membrane proximate the cavity end of said tube, and a channel in communication with said tube and inflation means connectable to said channel exterior said lumen for inflating and deflating said inflatable membrane;

inserting said guide means and hollow graft into said opening and urging said guide means and hollow graft upstream in said lumen to a desired location therewithin;

operating said inflation means and said guide means to disassociate said graft from said guide means and to cause at least one staple to engage the lumen;

operating said inflation means and said guide means to remove them from said lumen; and

closing said opening and said access.

6. The method of claim 5 wherein fluoroscopy means are provided and monitored to ascertain the movement and positioning of said guide means and graft.

7. The method of claim 5 wherein said inflation means is operated to cause the inflatable membrane to apply force to the staples to urge the staples into the lumen.