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. 28, 2008
Filed:
Oct. 25, 2004
Sergio Landau, Laguna Niguel, CA (US);
Christopher Sautter, Portland, OR (US);
Sergio Landau, Laguna Niguel, CA (US);
Christopher Sautter, Portland, OR (US);
Bioject, Inc., Tualatin, OR (US);
Abstract
A needle-free injection device, including a plunger and a spring operatively coupled with the plunger. The plunger is slidably disposed within a fluid chamber, is retractable to draw injectable fluid into the fluid chamber through an injection orifice, and may be advanced within the fluid chamber to forcibly eject injection fluid out through the injection orifice. The spring is configured to be compressed during arming of the injection device, and decompressed during discharge to forcibly advance the plunger within the fluid chamber. The injection device further includes an actuator operable to cause the spring to be compressed during arming of the injection device, and selectively operable prior to decompression of the spring to cause the plunger to be moved to a desired position within the fluid chamber.