The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 13, 2009
Filed:
Dec. 13, 2005
Applicant:
Michael G. Ross, Los Angeles, CA (US);
Inventor:
Michael G. Ross, Los Angeles, CA (US);
Assignee:
Other;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B 17/42 (2006.01);
U.S. Cl.
CPC ...
Abstract
An obstetrical vacuum extractor has a bell-shaped cup with an open edge in communication with a hollow stem. A plurality of apertures in the cup prevent a vacuum from being drawn within the cup when the open end is brought into contact with a fetal scalp, in the absence of a sheet liner adapted to fit within the interior of the cup, engage its open edge, and having a central hole adapted to communicate with the hollow stem so that a vacuum may be drawn within the liner. The liner surface preferably includes a foil layer and covers the apertures so that the vacuum may be drawn.