Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
May 29, 2018
Patent Application Number
15021365
Date Filed
September 12, 2014
Patent Primary Examiner
Patent abstract
The present invention provides a gasket for prefilled syringes having both airtightness and operability. The present invention relates to a gasket for prefilled syringes, the gasket including a plurality of circular ribs that are to be in sliding contact with the inner wall of a syringe, the gasket being laminated with an inert film, the plurality of circular ribs including a front circular rib having a front corner with a radius of curvature R1 and a rear corner with a radius of curvature R2, a ratio of the radius of curvature R2 to the radius of curvature R1 being more than 1.
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