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:
Sep. 12, 2006
Filed:
Feb. 14, 2006
Birger Hjertman, Vällingby, SE;
Birger Hjertman, Vällingby, SE;
Pharmacia AB, Stockholm, SE;
Abstract
The invention relates to an injector device for delivery of liquid from a high pressure source, and also to a method of performing such an injection. The device comprises a storage chamber, for the liquid or the liquid precursor components, comprising a storage barrelwith at least a section of substantially constant cross-section, defining a storage chamber axis, and a pressure chambercomprising a pressure barrelof substantially constant cross-section, defining a pressure chamber axis, for accommodation of at least one piston therein and having a front end openingfor ejection of the liquid. The pressure chamber being of sufficient strength to sustain the liquid pressure. The chambers are separate parts and adapted to cooperate with each other during injection so that the pressure chamber axis and the storage chamber axis substantially coincide, and that the pressure barrel and storage barrel have internal diameters sufficiently similar to allow passage of a resilient piston from the storage barrel to the pressure barrel in a sealing manner. The liquid is transferred from the storage chamber directly into the delivery chamber when the jet injection is to be performed.