Breastpump

Details Breastpump Breastpump

1987-05-22

1989-08-15

Kruter, Jerome L.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604346, A61M 106

Patent

active

048570516

ABSTRACT:
A breastpump is provided with a valve mechanism that closes a collection chamber when a vacuum is applied to a hood member and opens the collection chamber when the vacuum is removed. The valve mechanism is removably attached to the collection chamber for ready cleaning. A baffle in the hood member protects the vacuum line from milk flow. One embodiment of the invention has a connecting sleeve for connecting either a manually driven pneumatic pump or a motor driven pneumatic pump to the hood body to create an intermittent vacuum. A connector is further provided for use with a pair of breastpumps operated simultaneously by a motor driven pneumatic pump. An adjustment piece for decreasing the cross-sectional area of a funnel-shaped hood member is also disclosed for use of the breastpumps with smaller breasts. One type of manually driven piston pump useful with the invention has apertures formed through the pump cylinder wall that are selectively opened and closed for adjustment of the piston pump vacuum.

REFERENCES:
patent: 1184293 (1916-05-01), Zeratsky
patent: 3583434 (1971-06-01), Muller
patent: 3977405 (1976-08-01), Yanase
patent: 4573969 (1986-03-01), Schlensog et al.
patent: 4673388 (1987-06-01), Schlensog et al.

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