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US 5,385,560 AGranted
Reducer for cannulae
AssigneeEthicon Endo-Surgery, Inc.
InventorThomas Wulf
Life of this patent
Estimating the term…
Abstract
A reducer for trocar cannulae includes a covering cap which can be secured on the handle of a cannula and which has a socket engaging with a distal end to the handle provided for the shaft of operating instruments. The proximal end face of the socket is sealed off via a wall provided with at least two openings. Seals for shafts of operating instruments of smaller diameter are allocated to the openings.
Claims9
In combination:
- a cannula with open distal and proximal ends and a cylindrical opening extending through said ends, said cylindrical opening having a first diameter;
- and
- a reducer comprising:
- a covering cap secured to said cannula proximal end;
- a socket extending distally from said cap, said socket containing a distal end opening with a second diameter, said socket distal end opening extending into the opening in said cannula proximal end, and said socket having a proximal end having a face containing at least two openings with third and fourth diameters, said openings having seals associated therewith and said at least two openings capable of accepting the operating shafts of surgical instruments;
- wherein said first diameter is greater than said second diameter.
3 more elements
Dependencies are inferred from the claim text.