发明名称 |
Breast pump |
摘要 |
In a breast pump, milk expressed from a user's nipple may be drawn into the pumping mechanism used to create a vacuum. This can lead to unhygienic situations because pumping mechanisms are difficult or impossible to clean by a user. The present invention relates to a breast pump comprising first and second pressure chambers (22, 23) and an actuator (20) disposed to fluidly divide the two chambers (22, 23). The actuator (20) is movable to generate an inverse pressure differential in the second chamber (23) when a pressure differential is generated in the first pressure chamber (22), or a pressure differential is released from the first pressure chamber (22). Furthermore, the actuator (20) comprises a first piston element (30) and a second piston element (32), and wherein the first pressure chamber (22) is disposed between the first piston element (30) and the second piston element (32). |
申请公布号 |
US8827947(B2) |
申请公布日期 |
2014.09.09 |
申请号 |
US201113810747 |
申请日期 |
2011.07.14 |
申请人 |
Koninklijke Philips N.V. |
发明人 |
Bosman Franciscus Jozef;Mulder Bernardo Arnoldus |
分类号 |
A61M1/06;A61M1/00 |
主分类号 |
A61M1/06 |
代理机构 |
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代理人 |
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主权项 |
1. A breast pump comprising a first pressure chamber, a second pressure chamber and an actuator disposed to fluidly divide the two chambers, wherein the actuator is movable to generate an inverse pressure differential in the second chamber when a pressure differential is generated in the first pressure chamber, or a pressure differential is released from the first pressure chamber, wherein the actuator comprises a first piston element and a second piston element, and wherein the first pressure chamber is disposed between the first piston element and the second piston element. |
地址 |
Eindhoven NL |