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
Egg separator
Methods and compositions to treat and detect misfolded-SOD1 mediated diseases
Low cost mesh network capability
Monitoring heap in real-time by a mobile agent to assess performance of virtual machine
Cooling method and device for cooling a medium-voltage electrical installation in a protective sheath
Social network user data advertising
Image processing apparatus, image printing apparatus and printing data generation method
  Randomly Featured Patents
Coated valve for internal combustion engine
Tray column and method for mass transfer in a tray column
Solid-state imaging device
Routing area update in packet radio network
Increasing force transmissibility for tactile feedback interface devices
Electron detection device and scanning electron microscope
Transistor in a semiconductor substrate having high-concentration source and drain region formed at the bottom of a trench adjacent to the gate electrode
Memory device with delay tracking for improved timing margin
Automatic information, goods and services dispensing system
Unipolar biomagnetic therapy appliance