Side port catheter device and method for accessing side branch occlusions

摘要

A medical device and method are provided for accessing a side branch in an artery. The device includes a catheter having a sidewall, an internal lumen, and a side port formed through the sidewall. A perforating guide wire has a proximal portion within the internal lumen and a distal portion arranged to be movable out of the side port. The guide wire can be delivered through the side port to a side branch artery when the catheter is deployed to a location with the side port aligned with the side branch artery. In another embodiment, the catheter has inner and outer telescoping tubes with offset exit ports formed therein. The telescoping tubes can be used to change the degree of deflection of the perforating guide wire by changing the relative positions of the offset exit ports.

主权项

1. A medical device for accessing a side branch in an artery, comprising:
a catheter having a sidewall and an internal lumen; a side port formed through said sidewall; and a perforating guide wire having a proximal portion within said internal lumen and a distal portion arranged to be movable out of said side port, whereby said perforating guide wire can be delivered through said side port to a side branch artery; wherein said catheter further comprises an insertion lumen through which a second guide wire can be inserted for guiding the catheter into position within a patient's body, said insertion lumen comprising open distal and proximal ends and being arranged so that said side port of the catheter is located between said distal and proximal ends, said insertion lumen being substantially shorter than said internal lumen of the catheter, and said proximal end of said insertion lumen being closer to said side port than to a proximal end of said catheter; further comprising at least one balloon attached to said catheter for stabilizing the catheter during delivery of the perforating guide wire through the side port; wherein said catheter further comprises a balloon inflation lumen and a balloon inflation port for inflating the balloon after insertion of the catheter into a patient; and wherein said insertion lumen is located within said inflation lumen.