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US 2006/0041270 A1Published application
Medical access sheath
OwnerJay Lenker, Onnik Tchulluian +1inventors
InventorsJay Lenker, Onnik Tchulluian, Edward Nance
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OwnerJay Lenker, Onnik Tchulluian +1inventors
InventorsJay Lenker, Onnik Tchulluian, Edward Nance
Estimating the term…
An expandable sheath is insertable into a patient through an incision. Once inserted and advanced to the target surgical site, the sheath can be expanded to an enlarged diameter. The wall of the sheath is fabricated from a tubular structure comprising filamentous elements that extend axially and at least partially circumferentially along the length of the sheath. The tubular filamentous material is drawn or expanded axially to create the small diameter configuration that is inserted into the patient. A standoff attaches the distal end of the tubular filamentous material to the sheath hub by way of radially movable anchors. Additional filamentous tubular material extends out the proximal end of the hub. A compression mechanism forces the additional filamentous tubular material in the distal direction which causes axial compression and radial or diametric dilation of the working length of the sheath, that part of the sheath that extends beyond the proximal end of the hub. Radial dilation is accomplished with no substantial change in sheath working length.
An access sheath for expanding an opening in biological tissue from a first cross-sectional area to a second larger cross-sectional area, the sheath comprising:
A method of providing access to a surgical site;
A surgical access device for expanding an opening in a patient, comprising:
A method of providing access to a surgical site;
Dependencies are inferred from the claim text.