| 主权项 |
1. A device for providing access through a body wall of a patient to a target site, comprising:
a hollow tubular member having a proximal end and a distal end, a first segment having a first diameter, and a second segment having a second diameter, said first diameter greater than said second diameter, a first distally tapered portion providing a transition between said first segment and said second segment, and a second distally tapered portion distal of said second segment, said hollow tubular member having a pair of lumens therealong, a first one of said lumens extending from a proximal portion of said tubular member to said distal end, and a second one of said lumens extending from a proximal portion of said tubular member to said second segment, at least one port along said second segment communicating with said second lumen; an inflatable member disposed along said second segment at said at least one port, said inflatable member configured and arranged such that upon inflation thereof said inflatable member has a diameter at least as large as said first diameter; and wherein the first segment of the hollow tubular member comprises an outer surface configured to receive a tracheostomy tube. |
