Back to results
US 5,957,931 AGranted
Obstetrical vacuum extractor cup
AssigneePrism Enterprises, Inc.
InventorDan G. Dimitriu
Life of this patent
Estimating the term…
Abstract
An obstetrical vacuum extractor comprising a vacuum cup to which a disk assembly and attached traction cord are rotatably coupled. The cup has a protrusion extending from its base, and the disk assembly a bore for receiving the protrusion. The protrusion is then preferably ultrasonically welded to create a button to rotatably retain the disk assembly on the cup.
Claims12
An obstetrical vacuum extractor for placement on a child's head for use during childbirth, the obstetrical vacuum extractor comprising, in combination,
- a vacuum cup having a cup base and a side wall defining a hollow interior cavity, the cup base having an exterior surface, the side wall having a side wall edge forming a cup opening, the vacuum cup further including a vacuum opening communicating with the interior cavity of the vacuum cup and being adapted for connection to a vacuum source, the vacuum cup further comprising a protrusion extending from the exterior surface of the cup base, the protrusion having an end;
- a disk assembly rotatably coupled to the vacuum cup, the disk assembly having a disk base portion and at least one arm extending therefrom, the disk base portion having a bore extending therethrough for receiving the cup protrusion during assembly, the end of the protrusion being enlarged during assembly to rotatably couple the disk assembly to the cup;
- and
- a traction cord coupled to the arm for rotation with the disk assembly relative to the cup.
1 more element
Dependencies are inferred from the claim text.