Inventors:
Mark A. Luzbetak - Kildeer IL, US
Thomas A. Sutrina - Rockford IL, US
Erich Pfenniger - Ebikon, CH
Patrik Bosshard - Buonas, CH
International Classification:
A61M 37/00
US Classification:
604141, 6048921, 604 74, 604 75, 604310, 604316, 604323, 261 692, 92 48, 92 49, 92 50, 92 96, 92 98 R
Abstract:
A barrier of a vacuum pump prevents contamination from entering a vacuum pump air line. The barrier separates parts of the pump and is moveable between an initial state and a distended state. The barrier is assembled within the pump with a pre-load. When the vacuum source is applied to the barrier, the barrier achieves a distended state and when the vacuum source is released, the barrier incrementally self returns to an initial state. The geometry and material construction of the barrier, along with the pre-load, assists in returning the barrier on its own to the initial state from the distended state.