Catheter with vessel lining and methods for using same
A system for providing access across a site of obstruction is provided. The system may include a sleeve, having a distal portion that can move from an inverted position to an everted position. A balloon situated within the sleeve can be extended so as to evert sleeve. A pathway can extend across a juncture between the distal portion and the remaining portion of the sleeve so as to provide access across the site of obstruction. A method for providing access across the site of obstruction is also provided.
1. A system to provide access across a site of obstruction, the system comprising:
a sleeve provided with a distal portion, the distal portion being arranged so as to be everted from an inverted initial position, wherein the distal portion is situated in a remaining portion of the sleeve when in the inverted initial position;
a balloon situated within the sleeve and being arranged so that the balloon acts on the distal portion of the sleeve to move the distal portion from the inverted position to an everted position; and
a pathway, extending across a juncture between the distal portion and the remaining portion of the sleeve when the distal portion is in the everted position, to provide access across a site of obstruction.
2. A system as set forth in claim 1 , wherein the sleeve is sufficiently flexible to be advanced through a vessel in a body.
3. A system as set forth in claim 1 , wherein the sleeve includes a coating to facilitate advancement through a vessel in a body.
4. A system as set forth in claim 1 , wherein the balloon is coupled to a lumen for inflation and deflation of the balloon.
5. A system as set forth in claim 1 , wherein the balloon has a sufficiently small profile so that, when in a deflated state within the pathway, it can provide access through the pathway.
6. A system as set forth in claim 1 , wherein the balloon is designed to seek a path of least resistance through the site of obstruction during deflation.
7. A system as set forth in claim 1 , wherein the balloon is coupled to an inner wall of the sleeve to minimize axial movement of the balloon, relative to the sleeve, during eversion.
8. A system as set forth in claim 1 , wherein the balloon has a diameter sufficiently large to press the sleeve against the inner walls of a vessel when the balloon is inflated, so as to minimize movement of the sleeve within the vessel during eversion of the distal portion.
9. A system as set forth in claim 1 , wherein the pathway is sufficiently sized to accommodate at least one device that can be advanced through the sleeve to access across the site of obstruction.
10. A system as set forth in claim 1 , wherein the sleeve distal portion is configured so as to include an open distal end.
11. A system as set forth in claim 10 , wherein a portion of a distal end of the balloon is configured so as to be inverted and wherein the initially inverted portion of the sleeve is received within the inverted portion of the balloon distal end.