发明名称 |
FILTER VIAL HAVING A TUBULAR PISTON A RETAINER CUP AND A FILTER |
摘要 |
A filter vial and piston are provided where the vial has a cylindrical wall with a closed bottom and open top and with the hollow, tubular piston (10) therein. The piston has a distal end covered by a cup (30) having a proximal cup seal extending outward to engage the walls of the vial to form a fluid tight seal with the vial during use. The distal end of the piston has a pist flange extending outwardly and located adjacent a recess in the piston so th cup forms a snap fit over the piston flange and extends into the recess. The piston flange causes the cup to bulge sufficiently outward to form a fluid tight seal with the vial during use. A filter (16) is placed in the bottom o the cup and abuts an inwardly extending lip on the cup. The filter is held against the lip by a piston support at the distal end of the piston. A cup support at a distal end of the cup also helps support the filter. |
申请公布号 |
CA2719056(C) |
申请公布日期 |
2016.04.26 |
申请号 |
CA20092719056 |
申请日期 |
2009.02.20 |
申请人 |
SCIENTIFIC PLASTIC PRODUCTS, INC. |
发明人 |
ELLIS, SAMUEL A.;HINGORANI, KISHAN G. |
分类号 |
A61J1/00;B01L99/00;B01D33/00;B01L3/14 |
主分类号 |
A61J1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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