Breastshield with multi-pressure and expansible chamber...

Details Breastshield with multi-pressure and expansible chamber... Breastshield with multi-pressure and expansible chamber...

2011-08-02

2011-08-02

Koharski, Christopher D (Department: 3763)

Surgery

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

Treating material introduced into or removed from body...

Reexamination Certificate

active

07988661

ABSTRACT:
Inner and outer shield parts of a breastshield are joined to form an enclosure defining a pressurizable chamber. The inner shield part has at least a portion thereof movable relative to the outer shield part when the chamber is subject to a negative or a positive pressure. A first pressure port is in communication respectively with the chamber for connection with a fluid pressure source of a first pressure. A second pressure port is in communication with the interior for connection with a pressure source of a second pressure. The breastshield is thus capable of being subjected to two different pressures, such as a positive pressure to move (expand) the chamber into the interior, so as to compress or massage the nipple/breast, and a negative pressure in the interior to draw the nipple/breast further therein for the expression of milk. The pressures can be independently controlled.

REFERENCES:
patent: 4323067 (1982-04-01), Adams
patent: 5885246 (1999-03-01), Ford
patent: 6277052 (2001-08-01), Howard
patent: 6579258 (2003-06-01), Atkin et al.
patent: 6866994 (2005-03-01), Morton

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