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:
Dec. 06, 1994
Filed:
Dec. 14, 1992
Applicant:
Inventors:
James F Godat, St. Louis, MO (US);
Max D Adams, St. Charles, MO (US);
Assignee:
Mallinckrodt Medical, Inc., St. Louis, MO (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61M / ;
U.S. Cl.
CPC ...
604199 ; 604187 ; 604208 ; 604218 ;
Abstract
A delivery apparatus in the form of a syringe assembly and piston with structure for preventing withdrawal of the piston a distance more than the thickness of one piston. The syringe is preferably prefilled and sterilized to provide a sterile syringe assembly with sterile fluid contents. Controlled, limited withdrawal of the piston facilitates aspiration of the syringe without the contamination risks caused by withdrawing the piston so as to allow the sterile fluid to contact the exposed portion of the syringe container portion behind the piston.