Catheter with vessel lining and methods for using same
Systems for providing access across a site of obstruction and methods for manufacturing and using such systems. Such systems may include a sleeve having an inflation lumen; a bushing disposed in a distal section of the sleeve; and an everting member coupled to the sleeve with the bushing, the everting member being movable from an inverted position inside the sleeve to an everted position outside the sleeve in response to an increase in pressure in the inflation lumen.
1. A system for providing access across a site of obstruction comprising:
a sleeve having a lumen;
an inner sleeve member slidably disposed within the lumen of the sleeve and limited from exiting a distal end of the sleeve, and having an inner lumen through which a guide wire can be directed;
an everting member having a distal end coupled to the distal end of the sleeve and a proximal end coupled to the inner sleeve member, the everting member being configured to collapse and securely grip the guide wire when the lumen is pressurized such that advancement of the inner sleeve member pushes the guide wire into the site of obstruction: and
a bushing disposed in a distal section of the sleeve to couple the everting member to the distal end of the sleeve, wherein the bushing acts as a stop to prevent the inner sleeve member from exiting the distal end of the sleeve.
2. The system of claim 1 further comprising an anchoring member coupled to the sleeve, the anchoring member being in fluid communication with the lumen and being expandable from a deflated position to an inflated position to anchor the sleeve near a site of obstruction when the lumen is pressurized to an anchoring pressure sufficient to anchor the sleeve in proximity to a site of obstruction.
3. The system of claim 1 , further comprising a rigid push tube extending proximally from the inner sleeve member.
4. The system of claim 1 further comprising a sealing member disposed between walls of the lumen and the inner sleeve member to seal the lumen.