Expandable percutaneous sheath
1 Assignment
0 Petitions
Accused Products
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 removable tubular restraint. In one application, the sheath is utilized to introduce a formed in place orthopedic fixation rod such as for use in spinal fixation procedures.
79 Citations
57 Claims
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1-14. -14. (canceled)
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15. A surgical access assembly comprising:
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a percutaneous access sheath comprising a proximal portion and a distal portion, wherein the distal portion is expandable from a first, smaller cross sectional area to a second, larger cross sectional area, and wherein the second, larger cross sectional area is sufficiently large to provide a passageway for passing surgical instruments to a surgical treatment site;
an insertion sheath surrounding at least part of the distal portion of the percutaneous access sheath, the insertion sheath being releaseable;
a deployment device positionable inside the distal portion of the percutaneous access sheath, the deployment device comprising an inflatable member and a guide wire lumen, the inflatable member being inflatable to expand the distal portion from the first, smaller cross sectional area to the second, larger cross sectional area; and
a guide wire, wherein the surgical access assembly is moveable along the guide wire to be directed to the surgical treatment site. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A surgical access assembly comprising:
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a percutaneous access sheath comprising a proximal portion and a distal portion, wherein the distal portion is expandable from a first, smaller cross sectional area to a second, larger cross sectional area, and wherein the percutaneous access sheath comprises means for securing the percutaneous access sheath to a supporting member;
an insertion sheath surrounding at least part of the distal portion of the percutaneous access sheath, the insertion sheath being releaseable; and
a balloon positionable inside the distal portion of the percutaneous access sheath, wherein the balloon has a length substantially equal to a length of the distal portion, and the balloon is inflatable to expand the distal portion from the first, smaller cross sectional area to the second, larger cross sectional area. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A surgical access assembly comprising:
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a percutaneous access sheath comprising a first portion and a second portion, wherein the second portion is expandable from a first, smaller cross sectional area to a second, larger cross sectional area, and wherein the second, larger cross sectional area is sufficiently large to provide a passageway for passing spinal surgical instruments to a percutaneous treatment site at the spine of a patient, and wherein an axial length of the second portion remains substantially the same when the second portion is expanded to the larger cross sectional area;
an insertion sheath surrounding at least part of the second portion of the percutaneous access sheath, the insertion sheath being releaseable; and
a deployment device positionable inside the percutaneous access sheath, wherein the deployment device is adapted to expand the second portion of the percutaneous access sheath from the first, smaller cross sectional area to the second, larger cross sectional area. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. A surgical access assembly comprising:
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a percutaneous access sheath comprising a first portion and a second portion, wherein the second portion is expandable from a first, smaller cross sectional area to a second, larger cross sectional area, and wherein the second portion comprises a continuous sheet that is folded to assume the smaller cross sectional area and unfolded to expand to the larger cross sectional area, and wherein the larger cross sectional area is sufficiently large to provide a passageway for passing surgical instruments to a surgical treatment site in a patient;
an insertion sheath surrounding at least part of the second portion of the percutaneous access sheath, the insertion sheath being releaseable; and
a deployment device positionable inside the percutaneous access sheath, wherein the deployment device is adapted to expand the second portion of the percutaneous access sheath from the first, smaller cross sectional area to the second, larger cross sectional area. - View Dependent Claims (49, 50, 51, 52, 53, 54, 55, 56, 57)
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Specification