Instrument seal for surgical access assembly
AssigneeCovidien LP
InventorsRoy J. Pilletere, Garrett P. Ebersole, Eric Brown, Matthew A. Dinino, Jacob C. Baril, Richard C. Hart, Justin Thomas, Nicolette R. LaPierre
Life of this patent
Estimating the term…
Abstract
A surgical access assembly includes a housing, a tubular member, and a valve assembly. The tubular member extends from the housing. The valve assembly is positioned in the housing and includes a centering mechanism, a guard assembly disposed on a first side of the centering mechanism, and an instrument seal disposed on a second side of the centering mechanism. The instrument seal including petals that are arrange in an overlapping arrangement.
Claims18
(canceled)
A surgical access assembly comprising:
- a housing comprising a central axis through a longitudinal passage;
- a valve assembly movable radially within the longitudinal passage of the housing, the valve assembly comprising an instrument seal and a guard;
- a centering ring within the housing and having an outer annular ring that surrounds the valve assembly;
- and
- a retainer comprising a plurality of pins passing through corresponding bores in the guard, the centering ring, and the instrument seal,
- wherein the centering ring permits radial movement of the valve assembly relative to the central axis of the housing.
A surgical access assembly comprising:
- a housing comprising a central axis through a longitudinal passage;
- a cannula having a proximal end attached to the housing and an opposite distal end;
- a valve assembly movable radially within the longitudinal passage of the housing, the valve assembly comprising an instrument seal and a guard, wherein the instrument seal comprises four or more petals foldable around a central hole;
- a centering ring having an outer annular ring that surrounds the valve assembly;
- and
- a retainer comprising a first ring and a second ring, the first ring having a plurality of pins passing through corresponding openings in the second ring,
- wherein the instrument seal, the guard, and the centering ring are sandwiched between the first and second rings, and
- wherein the centering ring permits radial movement of the valve assembly relative to the central axis of the housing.
A surgical access assembly comprising:
- a housing comprising a central axis through a longitudinal passage;
- a valve assembly movable radially within the longitudinal passage of the housing, the valve assembly comprising an instrument seal and a guard, wherein the instrument seal comprises four or more petals foldable about a seal frame around a central hole;
- a plurality of flexible fins connected to the seal frame and contacting an inner wall of the housing;
- and
- a retainer comprising a first ring and a second ring, the first ring having a plurality of pins passing through corresponding openings in the guard, the instrument seal, and the second ring, wherein the instrument seal and the guard are sandwiched between the first and second rings.
Dependencies are inferred from the claim text.