초록 ▼

A single handed breast pump comprises a pump body (1) housing a piston (7) releasably connected to a hand lever (9) itself releasably pivoted to the pump body, the latter including a funnel (2) to be laid against the nipple and an outlet (4) at which a container may be connected. The funnel connects

A single handed breast pump comprises a pump body (1) housing a piston (7) releasably connected to a hand lever (9) itself releasably pivoted to the pump body, the latter including a funnel (2) to be laid against the nipple and an outlet (4) at which a container may be connected. The funnel connects with a variable volume chamber in the pump body, said chamber having valves (11, 24) respectively for venting and for opening communication with the container outlet, whereby on operation of the hand lever an alternating pressure can be built up and relieved at the funnel.

대표청구항 ▼

A single-handed breast pump that may be held against the nipple of a breast by the user with one hand only, said pump comprising a tubular body having a barrel portion, a nipple receiving portion and a base portion for direct connection to a container to collect expressed milk, a piston reciprocable

A single-handed breast pump that may be held against the nipple of a breast by the user with one hand only, said pump comprising a tubular body having a barrel portion, a nipple receiving portion and a base portion for direct connection to a container to collect expressed milk, a piston reciprocable in the barrel portion by manually operable means, and including means to generate an alternating pressure at the nipple sufficient to express milk therefrom, a one-way valve in the base portion of the tubular body operable to prevent pressurization of a container when connected to the base portion, the nipple receiving portion being located on the body in a position such that a user can operate the piston with the same hand that is being used to hold the pump against the nipple, insert said means to generate an alternating pressure comprising an annular seal means axially displaceable in an annular groove in the piston, the piston also having at least one vent hole communicating with the annular groove.