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:
Jun. 28, 2011
Filed:
Jun. 05, 2006
Yuusuke Sakurai, Osaka, JP;
Jotaro Kishimoto, Hyogo, JP;
Hiroshi Yoshikawa, Osaka, JP;
Masahiko Kato, Osaka, JP;
Yuusuke Sakurai, Osaka, JP;
Jotaro Kishimoto, Hyogo, JP;
Hiroshi Yoshikawa, Osaka, JP;
Masahiko Kato, Osaka, JP;
Takeda Pharmaceutical Company, Osaka, JP;
Abstract
The present invention inhibits the occurrence of the foreign matters attributable to an adhesive for bonding an injection needle to a needle-base member so as to enhance the yield of a syringe when producing the same. A front-assembly () additionally provided at a leading end of an injection cylinder () comprises an injection needle (), a needle-base member (), a connection hub () and a protector cap (). The injection needle () and the needle-base member () are fixed to each other with an epoxy adhesive (). This adhesive () contains denatured aliphatic epoxy resin in the amount set to about 10 to about 25 wt % and its viscosity is set to about 20000 to about 40000 mPa·s. This adhesive () is heated at a temperature of at least 130 degrees C. for about 20 minutes to cure it. After the front-assembly () and the injection cylinder () have been sterilized with vapor, the connection hub () has a connection portion () external fitted and secured to the leading end of the injection cylinder ().