William M. Booth, III,Aashiish Agnihotri,Jeffrey M. Gross,Michael Johnson,Joseph J. Saladino
申请号：
US12046856
公开号：
US08840592B2
申请日:
2008.03.12
申请国别(地区):
US
年份:
2014
代理人:
摘要：
A piston configured to be received within a syringe is disclosed. The piston includes a valve body defining a proximal end and a distal end, a filter disposed within the proximal end of the valve body, and a valve disk disposed within the distal end of the valve body. As the piston is advanced through the syringe, the valve disk is configured to provide fluid flow through the valve body.
