Apparatus and methods for sealing vascular punctures

摘要

An apparatus for sealing a passage through tissue communicating with a blood vessel includes a bioabsorbable plug member coupled to the distal end of a carrier member. The plug member includes a lumen extending therethrough that communicates with a lumen extending through the carrier member. A sealing member is disposed in the plug member lumen for sealing the lumen. A guide member is slidable into the lumen such that edges of a groove extending between proximal and distal portions of the guide member engage a wall of the lumen to define a bleed back lumen. The guide member is inserted into the passage until the distal portion enters the vessel. The plug member is advanced over the guide member until the plug member enters the vessel, whereupon blood enters the bleed back lumen to identify the location of the vessel relative to the plug member.

主权项

1. An apparatus for sealing a passage through tissue, comprising:
an elongate member having a proximal end, a distal end, and a lumen extending between the proximal and distal ends; and a plug member releasably secured to the distal end of the elongate member by a connector configured to prevent the plug member from moving independently of the elongate member, the plug member comprising a distal port therein in communication and coaxially aligned with the lumen, the distal port configured to be open when the plug member is being delivered and the plug member having a cross-section larger than a cross-section of the elongate member when the plug member is releasably secured to the distal end of the elongate member prior to being inserted within the passage and after being released, wherein the plug member tapers along a longitudinal axis from a proximal end of the plug member to the distal end of the plug member such that a radial dimension perpendicular to the longitudinal axis at any location is not greater than a corresponding radial dimension of a proximal location and the distal end of the plug member is smaller than the proximal end of the plug member, the longitudinal axis being established by the lumen of the elongate member.