Sarnath Chattaraj,Poonam S. Gulati,Kiem Dang,Jocelyn Anne Montebon
申请号：
US13415740
公开号：
US09265890B2
申请日:
2012.03.08
申请国别(地区):
US
年份:
2016
代理人:
摘要：
Syringe pistons for a fluid syringe, and related sealing elements, are presented here. A syringe piston includes a piston body having a fluid end, an actuator end, and an outer seal-retaining surface between the fluid end and the actuator end. The syringe piston may utilize a piston sealing sleeve or a piston sealing cover. The sleeve can be coupled to the piston body around the outer seal-retaining surface, the piston sealing sleeve having a fin-shaped fluid seal element to form an interference fluid seal with an interior wall of a syringe barrel. The sealing cover can be coupled overlying the tip of the piston body. The cover has a fin-shaped fluid seal element to form an interference fluid seal with an interior wall of a syringe barrel.
