Apparatus and method for targeting a body tissue

摘要

An apparatus for targeting a desired target site on a body tissue comprising a wall of a first body cavity of a patient includes a target catheter. The framing member, when deployed into an expanded condition, has a framing member body which includes a three-dimensionally bulbous portion defining a maximum body footprint in a lateral dimension and has longitudinally spaced proximal and distal body ends which are both longitudinally spaced from the maximum body footprint. The proximal body end is attached to the target catheter. A protrusion has a diameter which is smaller than the maximum body footprint diameter. At least one target point is carried by the framing member and is adapted for placement adjacent the desired target site. At least one target pathway is attached to at least one target point. At least a portion of the target pathway is substantially spaced apart from the framing member body.

主权项

1. An apparatus for targeting a desired target site on a body tissue comprising a wall of a first body cavity of a patient, the apparatus comprising:
a target catheter having a longitudinally extending target catheter lumen surrounded by a tubular target catheter wall having an outer surface; a framing member having a collapsed condition in which the framing member is adapted for insertion into the first body cavity and an expanded condition in which the framing member is adapted for placement within the first body cavity, the framing member, when deployed into the expanded condition, having:
a framing member body which includes a three-dimensionally bulbous portion defining a maximum body footprint in a lateral dimension and having longitudinally spaced proximal and distal body ends which are both longitudinally spaced from the maximum body footprint, a diameter of the bulbous portion being significantly smaller at the proximal and distal body ends than at the maximum body footprint, the proximal body end being attached to the outer surface of the target catheter wall, anda protrusion located at the distal body end, the protrusion having a diameter which is smaller than the diameter of the maximum body footprint, the protrusion extending longitudinally distally from the distal body end of the bulbous portion; at least one target point carried by the framing member and adapted for placement adjacent the desired target site; and at least one target pathway attached to at least one target point, at least a portion of the target pathway extending through the target catheter lumen, and the target pathway being substantially spaced apart from the framing member body.