TRANSLUMINAL SHEATH HUB
Disclosed is a hub for a transluminal sheath. The hub provides a handle for grasping the sheath, provides connections for fluid inlet and outlet lines, and provides for attaching mechanisms between the sheath and a dilator. The hub can be used on a non-radially expandable sheath, or it can be used on a sheath having a radially expandable configuration. In an exemplary application, the hub is fitted to a sheath, which provides access for a diagnostic or therapeutic procedure such as ureteroscopy or stone removal.
1 . A transluminal access sheath for insertion into a urethra by a person having a pair of adjacent fingers, the access sheath comprising:
an elongate tube having a lumen extending between a proximal end and a distal end, the elongate tube having a distal portion and a proximal portion;
a removable inner member disposed within the lumen of the elongate tube;
a hub coupled to the proximal end of the elongate tube, the hub comprising a distally facing surface and a proximally facing surface, the distally facing surface forming at least in part a straight cone, sized and configured to receive adjacent fingers of the user, the proximally facing surface forming a straight taper configured to funnel instrumentation into the lumen.
2 . The transluminal sheath of claim 1 wherein the sheath hub is configured at its distal end to slip into the urethra and to allow the proximal end of the sheath tube to slip into the urethra.
3 . The transluminal sheath of claim 1 wherein the sheath hub is configured with a substantially linear outline when viewed in axial cross-section.
4 . The transluminal sheath of claim 1 wherein the sheath hub has a diameter that is less than ½ the diameter of an average adult finger, the shape of the distally facing side of the hub is not curved to a radius substantially the same as a finger, and wherein the hub is not receivable by adjacent fingers.
5 . The transluminal sheath of claim 1 , wherein the distal portion of the elongate tube is expandable from a first, smaller diameter to a second, greater diameter.
6 . The transluminal sheath of claim 5 , wherein the proximal portion of the elongate tube is substantially non-expandable and which is affixed at its distal end to a proximal end of the expandable distal portion.
7 . The transluminal sheath of claim 6 , wherein the inner member comprise a dilator that can be used to expand the distal portion of the access sheath
8 . The transluminal sheath of claim 1 wherein the proximally facing side of the sheath hub is releasably affixed to an inner member hub, which covers the proximally facing side of the sheath hub.
9 . The transluminal sheath of claim 1 , wherein the inner member hub further comprises a dilator inflation port and a guidewire lumen.