Patent ID: 7144411

Claim:
An apparatus for introduction into an opening in a wall of a body lumen, comprising: a sheath having proximal and distal ends and an interior surface defining a first lumen extending between the proximal and distal ends, the distal end having a size and shape for insertion into a body and one or more ports communicating with the first lumen; an elongate member insertable into the first lumen of the sheath, the elongate member including a distal region configured for sealingly engaging the interior surface of the sheath, the elongate member further including a shaft region extending proximally of the distal region and having an external surface that does not sealingly engage the interior surface of the sheath, thereby defining a first passage between the elongate member and the sheath proximal to the distal region, the first passage communicating with the one or more ports when the elongate member is fully inserted into the sheath.