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:
May. 28, 1991
Filed:
Jul. 06, 1989
Applicant:
Inventors:
Carl C Wang, Oakland, CA (US);
Leif J Sundblom, Auburn, CA (US);
Assignee:
Alcon Laboratories, Inc., Forth Worth, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61M / ;
U.S. Cl.
CPC ...
604 23 ; 604121 ; 604143 ; 604147 ; 604294 ; 606107 ;
Abstract
A pneumatic retinopexy injector includes a syringe to which is communicated a controllable gaseous pressure source. A desired volume of a gaseous substance can be injected by the syringe by utilizing a controller to introduce the pressurized gas to the syringe to cause the piston of the syringe to eject any contents of the syringe. The manual controller can comprise a foot pedal having a variable flow pneumatic valve. The invention can also utilize a vacuum source which is switchable to the syringe to allow automatic filling of the syringe.