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. 10, 1991
Filed:
Oct. 10, 1990
Gillis P van der Wal, Olst, NL;
Duphar International Research B.V., Weesp, NL;
Abstract
The invention relates to a training device for an automatic injector. The device comprises a cylindrical outer sleeve in the rear portion of which a discharge mechanism is connected and in the front portion of which a holder intended for accommodating a punch member is incorporated so as to be locked against forward movement. The discharge mechanism comprises a plunger, a coil spring which acts on the plunger, a locking device and a safety member. The holder for the punch member comprises a sleeve-like rear portion which is open at each end. The punch member is accommodated in the holder such that its rear end at least substantially engages the front end of the plunger, and such that the front prod-shaped end portion which has dimensions such that it can pass through the central aperture in the nose portion of the holder outwards, is present within the holder prior to use of the device. The device further comprises auxiliary means for making the device ready for reuse. The rear end portion of the punch member comprises means which, in cooperation with means provided on the inner wall of the sleeve-like rear portion of the holder, prevent undesired forward movement of the punch member in the holder, in which, however, the device at the area of the means is proportioned such that, after activation, the wall of the holder can expand resiliently outwards within the outer sleeve to allow the punch member to pass.