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. 16, 2012
Filed:
Mar. 22, 2011
Bodo Asmussen, Ammersbek, DE;
Hans-rainer Hoffmann, Newwied, DE;
Bodo Asmussen, Ammersbek, DE;
Hans-Rainer Hoffmann, Newwied, DE;
LTS Lohmann Therapie-Systeme AG, Andernach, DE;
Abstract
The invention relates to a needle-less, disposable injector comprising a housing (), which has at least one compression bar, a cylinder-piston unit (), a plunger-actuating ram (), a trigger unit () and a spring energy reservoir (), wherein the trigger unit locks the pre-tensioned spring energy reservoir by means of the compression bar. During triggering, the compression bar slides along at least one trigger element () of the trigger unit and, after triggering the trigger unit, the spring energy reservoir displaces the compression bar by means of the plunger-actuating ram and actuates the cylinder-piston unit. When loaded by the pre-tensioned spring energy reservoir, the pairing formed by the mutually facing inner wall of the trigger element and the contact surface of the compression bar has at least in areas a higher sliding friction coefficient than the pairing formed by the mutually facing collar surface of the plunger-actuating ram and the support surface of the compression bar. The present invention provides a disposable injector where the required minimum contact-pressure force is ensured during use thereof.