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. 30, 2008
Filed:
Mar. 13, 2002
John M Barker, Ventura, CA (US);
Thor R. Halseth, Agoura, CA (US);
Joseph Kovalski, Ventura, CA (US);
Robert T. Mcwethy, Ventura, CA (US);
Bernardo Challiol, Ventura, CA (US);
John M Barker, Ventura, CA (US);
Thor R. Halseth, Agoura, CA (US);
Joseph Kovalski, Ventura, CA (US);
Robert T. McWethy, Ventura, CA (US);
Bernardo Challiol, Ventura, CA (US);
MDC Investment Holdings, Inc., Wilmington, DE (US);
Abstract
A method and apparatus for injecting medicine from a pre-filled container into a patient through an injection needle. After use, the needle is automatically shielded to prevent inadvertent contact with the needle. The device operates by pumping medicine out of the vial and into a transfer chamber. The medicine is then expelled from the transfer chamber into a patient during an injection stroke. At the end of the injection stroke, the needle is released for retraction, and the spring retracts the needle for shielding. The device can include an injector assembly and a vial holder assembly. The injector assembly has a needle retainer for releasably retaining the needle in a projecting position against the bias of a spring. The vial holder assembly is attachable with the injector assembly and is operable to transfer fluid from the vial and into the transfer chamber for an injection.