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. 19, 2017
Filed:
Apr. 22, 2014
Taisei Kako Co., Ltd., Osaka, JP;
Yukihiro Ogawa, Osaka, JP;
Yuji Tanaka, Kanagawa, JP;
Taisei Kako Co., Ltd., Osaka, JP;
Abstract
It is an object of the present invention to provide a syringe which is capable of preventing an accident such that a patient inadvertently sticks her/his hand with an injection needle when improperly performing a needle retracting operation. A sleeve () is fitted around a syringe barrel () so as to be axially movable from an administration position such that the injection needle () projects to a distill side to an accommodation position such that the injection needle () is accommodated. A coil spring () for biasing the sleeve () toward the accommodation position is provided between the sleeve () and the syringe barrel (), and is held in a compressed state in a spring holder (). The spring holder () is disposed in association with the syringe barrel () so as to release the coil spring by further pushing the syringe barrel () to the distal side after completion of the administration of a liquid drug. The sleeve () is axially engaged with the syringe barrel () so as to be locked at the accommodation position when being moved to the accommodation position by a biasing force of the coil spring ().