Diaphragm pump and pump for double-breast pumping

Details Diaphragm pump and pump for double-breast pumping Diaphragm pump and pump for double-breast pumping

2006-03-07

2006-03-07

Lucchesi, Nicholas D. (Department: 3763)

Surgery

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

Treating material introduced into or removed from body...

C119S014240

Reexamination Certificate

active

07008400

ABSTRACT:
A motorized pump is disclosed that includes a flexible diaphragm fitting within a rigid member, a motor drive mechanism for drawing a puller member attached to the diaphragm away from the rigid member to create a space between the diaphragm and the rigid member and form a negative pressure region within that space, and an outlet communicating with the negative pressure region. In one embodiment, the pump provides a negative pressure in a single chamber which can be used to operate one or two breast shield assembles. In another embodiment, the pump is particularly adapted for double-pumping and provides two chambers which generate vacuum.

REFERENCES:
patent: 4857051 (1989-08-01), Larsson
patent: 4929229 (1990-05-01), Larsson
patent: 5352096 (1994-10-01), Chi-Wen
patent: 5648606 (1997-07-01), Spalding
patent: 5649809 (1997-07-01), Stapelfeldt
patent: 6139521 (2000-10-01), Larsson

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