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:
Jan. 09, 2007
Filed:
Jun. 20, 2001
Peter Lell, Moosburg D-85368, DE;
Peter Lell, Moosburg D-85368, DE;
Other;
Abstract
The invention relates to a needle-less injection device, comprising a cannula () which can be inserted in a housing (), can be filled with a predetermined active substance () for injection, and comprises a piston () movable in a cannula housing for ejecting the active substance () from an outlet opening () in the cannula housing, and a propellant charge cartridge () insertable into the housing () and comprising a housing containing a propellant charge () and a device () for igniting the propellant charge, and a propelling surface () movable in a part () of the housing of the injection device () or in the housing of the cannula () or in the cartridge housing and movable by the gas pressure, after ignition of the propellant charge (), out of a starting position into an end position, the outer periphery of the propelling surface being sealed from the inner periphery of each housing during the entire displacement travel also, wherein the propelling surface () acts upon the piston () movable in the cannula housing.