Expandable percutaneous sheath
First Claim
Patent Images
1. A percutaneous access system for providing minimally invasive access, comprising:
- an access sheath comprising an elongate tubular body having a proximal end and a distal end and defining an axial lumen, at least a portion of the elongate tubular body being expandable from a first, smaller cross-sectional profile to a second, greater cross-sectional profile;
a releasable jacket carried by the access sheath to restrain at least a portion of the elongate tubular member in the first, smaller cross-sectional profile; and
an expandable member positioned within the elongate tubular body and configured to expand the elongate tubular body from the first, smaller cross-sectional profile to the second, greater cross-sectional profile, the expandable member having a distal end and a proximal end, the expandable member carrying at least one radiopaque member within the access sheath;
wherein the access sheath includes at least one opening in the elongate tubular body, the at least one opening being positioned generally over the at least one radiopaque member.
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Abstract
Disclosed is an expandable percutaneous sheath, for introduction into the body while in a first, low cross-sectional area configuration, and subsequent expansion to a second, enlarged cross-sectional configuration. The sheath is maintained in the first, low cross-sectional configuration by a tubular restraint. In one application, the sheath is utilized to provide access for a diagnostic or therapeutic procedure such as percutaneous nephrostomy or urinary bladder access.
155 Citations
12 Claims
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1. A percutaneous access system for providing minimally invasive access, comprising:
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an access sheath comprising an elongate tubular body having a proximal end and a distal end and defining an axial lumen, at least a portion of the elongate tubular body being expandable from a first, smaller cross-sectional profile to a second, greater cross-sectional profile; a releasable jacket carried by the access sheath to restrain at least a portion of the elongate tubular member in the first, smaller cross-sectional profile; and an expandable member positioned within the elongate tubular body and configured to expand the elongate tubular body from the first, smaller cross-sectional profile to the second, greater cross-sectional profile, the expandable member having a distal end and a proximal end, the expandable member carrying at least one radiopaque member within the access sheath; wherein the access sheath includes at least one opening in the elongate tubular body, the at least one opening being positioned generally over the at least one radiopaque member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification