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:
Apr. 21, 1992
Filed:
Jan. 30, 1990
Applicant:
Inventor:
Geoffrey S Martin, Mississauga, CA;
Assignee:
VAS-CATH Incorporation, Mississauga, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61M / ; A61M / ; A61B / ;
U.S. Cl.
CPC ...
604164 ; 604170 ; 604281 ; 604282 ; 128758 ;
Abstract
A catheter is provided for sampling, and particularly for sampling chorionic villi. The catheter has a cannula of a material opaque to ultrasound and having a distal portion capable of being curved manually into a desired curvature for use, and defining a lumen extending throughout the length of the cannula for containing a supple obturator to close the distal end of the lumen during insertion and to permit removal of the sample by applying a negative pressure to the proximal end of the catheter once the catheter is in position and the obturator removed.