Resources Contact Us Home
Breastshield with multi-pressure and expansible chamber construction, related breastpump and method

Image Number 13 for United States Patent #6663587.

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, and may furthermore alternate being negative and positive through the same pressure port. In one embodiment, an enclosure defines first and second chambers. The chambers are separate from each other and independently pressurizable. A greater plurality of chambers is furthermore contemplated. The invention takes the form of a variety of different embodiments of breastshields and breastpumps for breastmilk pumping having sundry novel attributes and advantages.

  Recently Added Patents
Doherty amplifier circuit
Semiconductor IC including pulse generation logic circuit
Scanning transmission electron microscope and axial adjustment method thereof
Campanula plant named `PKMM03`
Stain-blocking aqueous coating composition
Antennas and their coupling characteristics for wireless power transfer via magnetic coupling
Interaction analysis and prioritization of mobile content
  Randomly Featured Patents
Battery having electrode made of polymeric compound having conjugated double bonds
Musical tone signal generation apparatus accommodated for multiple users playing music in ensemble
Fluid storage tank trailer
Dentifrice compositions
Polyester support and silver halide photographic light-sensitive material
Topical composition for heightened sensitivity
Water jet propelling apparatus for boats
Combined adjustable curtain rod holder and rod
Gear transmission for a winch