Cannulas having body wall retention features, and related systems and methods
AssigneeIntuitive Surgical Operations, Inc.
InventorRobert C. REID
Life of this patent
Estimating the term…
Abstract
A cannula may include a cannula bowl having an opening to receive an instrument configured to be advanced through the cannula, and a cannula tube extending distally from the cannula bowl. The cannula tube may have a proximal end opening, a distal end opening disposed at an opposite end of the cannula from the proximal end opening, and lateral wall defining a passage extending from the proximal end opening to the distal end opening. The lateral wall can have outer dimensions defining a waisted portion with smaller outer dimensions than a region disposed proximally or distally to the waisted portion along a length of the cannula tube.
Claims21
-20. (canceled)
A cannula comprising:
- a cannula bowl having an opening to receive an instrument configured to be advanced through the cannula;
- and
- a cannula tube extending distally from the cannula bowl,
- the cannula tube comprising a proximal end opening to the cannula bowl,
- the cannula tube comprising a distal end opening at an opposite end of the cannula from the opening of the cannula bowl,
- the cannula tube having a first, tapered outer profile in a proximal-to-distal direction along a first length portion of the cannula tube,
- the cannula tube having a second, flared outer profile in a proximal-to-distal direction along a second length portion of the cannula tube, and
- the cannula tube having a third, tapered outer profile in a proximal-to-distal direction along a third length portion of the cannula tube;
- wherein the second length portion is distal to the first length portion;
- and
- wherein the third length portion is distal to the second length portion.
A cannula comprising:
- a cannula bowl having an opening to receive an instrument configured to be advanced through the cannula;
- and
- a cannula tube extending distally from the cannula bowl,
- the cannula tube having a proximal end opening to the cannula bowl,
- the cannula tube having a distal end opening at an opposite end of the cannula from the opening of the cannula bowl,
- the cannula tube having a tapered outer profile in a proximal-to-distal direction along a portion of a length of the cannula tube, and
- the cannula tube having a series of axially-spaced ribs extending radially from an outer lateral wall of the cannula tube.
Dependencies are inferred from the claim text.