Methods and apparatus for anastomosis including expandable anchor
The present disclosure is directed to devices for approximating body vessels and method for performing the same. In accordance with one aspect of the present disclosure, the device includes an inner member having a first expandable anchor operatively coupled near a distal end thereof, an outer member having a second expandable anchor, and a sleeve disposed about at least a portion of the inner member and the outer member.
1. A method of joining a first body vessel and a second body vessel, comprising:
positioning proximal and distal expandable cuffs of an outer tubular member of a device within the first body vessel;
positioning an expandable anchor of an inner tubular member, which is slidably disposed within the outer tubular member, within the second body vessel;
positioning a sleeve having a distal end portion and a proximal end portion about the outer tubular member such that the distal end portion is disposed at least partially over the expandable anchor, and such that the proximal end portion is disposed at least partially over the distal expandable cuff;
expanding the expandable anchor within the second body vessel to:
inhibit withdrawal of the inner tubular member from the second body vessel; and
expand the distal end portion of the sleeve to a diameter greater than the proximal end portion of the sleeve;
expanding the proximal expandable cuff to prevent axial displacement of the outer tubular member relative to the first body vessel;
withdrawing the inner tubular member proximally through the outer tubular member to approximate the second body vessel into contact with the first body vessel;
expanding the distal expandable cuff to expand the proximal end portion of the sleeve into contact with an inner surface of the first body vessel; and
deploying a medical adhesive between the first and second body vessels; wherein the outer tubular member defines a distal end, the distal end of the outer tubular member in contact with the expandable anchor when the expandable anchor is expanded.
2. The method according to claim 1 , wherein deploying the medical adhesive includes introducing the medical adhesive through a separate instrument.
3. The method according to claim 1 , wherein deploying the medical adhesive includes introducing the medical adhesive through the device.
4. The method according to claim 1 , wherein expanding the expandable anchor includes radially expanding the distal end portion of the sleeve against an inner surface of the second body vessel.
5. The method according to claim 4 , expanding the distal expandable cuff within the first body vessel to radially expand the proximal end portion of the sleeve.
6. The method according to claim 5 , further comprising maintaining the expandable anchor and distal expandable cuff in an expanded state for a sufficient period of time to set the medical adhesive and secure the first and second body vessels to one another.
7. The method according to claim 6 , further comprising:
deflating the expandable anchor and the proximal and distal expandable cuffs; and
withdrawing the inner and outer tubular members from the first and second body vessels thereby leaving the sleeve secured within the first and second body vessels.
8. The method according to claim 4 , wherein deploying the medical adhesive includes applying the medical adhesive to an outer surface of the sleeve.
9. The method according to claim 4 , wherein the sleeve is impregnated with the medical adhesive.
10. The method according to claim 1 , wherein the first body vessel is a urethra and the second body vessel is a bladder.