Alternating suction breastpump assembly and method

  • US 5,954,690 A
  • Filed: 04/11/1997
  • Issued: 09/21/1999
  • Est. Priority Date: 04/14/1996
  • Status: Expired due to Fees
First Claim
Patent Images

1. A double-breastpump assembly comprising:

  • first and second breastpump units, each breastpump unit having a breast shield within which a breast is received, a receptacle for collecting breastmilk expressed into said breast shield, and a conduit structure connecting said breast shield to said receptacle for conveying breastmilk from said breast shield to said receptacle;

    a vacuum pump unit having first and second air chambers defined by a movable member within an enclosure, in which a periodic reduced air pressure is alternately created in each said chamber;

    a first airline connecting said first air chamber to said first breastpump unit for conveying said periodic reduced air pressure from said first air chamber to said first breastpump unit;

    a second airline connecting said second air chamber to said second breastpump unit for conveying said periodic reduced air pressure from said second air chamber to said second breastpump unit; and

    a valve associated with each of said first and second chambers for exhausting increased air pressure within a respective chamber to ambient air during the period that said periodic reduced air pressure is being created in said breast shield of the other breastpump units.

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