Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
System and transceiver clocking to minimize required number of reference sources in multi-function cellular applications including GPS
Table base
Stowable pet leash and collar
Brushless motor drive apparatus and drive method
HYR1 as a target for active and passive immunization against Candida
Electron-beam lithography method with correction of line ends by insertion of contrast patterns
Account managing device, image processing system, and storage medium
  Randomly Featured Patents
Collection device for capillary blood
Integrated testing system and method for validation of a manufacturing automation system
Toothbrush
Board mounted electrical connector
Stuffed toy
Drug delivery device and method
Cellular thermal insulating material based on diatomaceous earth and method for its production
Circuit for programming a memory element
Method and apparatus for manufacturing a fibrous material web
Method of preparing coagulant for purification of water from mechanical admixtures