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:
Oct. 15, 1991
Filed:
Nov. 04, 1988
Applicant:
Inventor:
Robert L Burchette, Jr, Mayo, SC (US);
Assignee:
Plastic Injectors, Inc., Spartanburg, SC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61M / ;
U.S. Cl.
CPC ...
604164 ; 604272 ; 606167 ;
Abstract
An obturator is disclosed as being of a throwaway, single use, structure, preferably fully formed of thermoplastic, polymeric material and with a piercing and cutting end defined by non-planar faces having depressions formed therein to present cutting edges. The depressions are shaped by compound curves including a partial spherical surface, and angularly related, generally flat surfaces which define the cutting edges. The surfaces are of a shape and orientation as to provide spatial relief to the edges of the walls of a body to which the obturator is applied, thereby preventing stretching and tearing of the wall.