Pump nurser for expelling air from disposable liners

摘要

The nurser is made of a resilient outer shell and a flexible liner. A nipple is attached to the upper end of the outer shell. The outer shell is squeezed to allow the pressure inside to increase and force air in the liner through the nipple. The nurser utilizes a one way valve on the outer shell to allow air into the shell when the pressure is released from the outer shell. This prevents the liner from expanding and air from reentering the liner.