Patent ID: 7174927
Filing Date: 2007-02-13
Classification: F04B

Abstract:
1. A vacuum device for extraction of a substance from tissue, comprising: an upper member having a bottom surface, the bottom surface defining a bottom opening; a vacuum source therein the upper member, the vacuum source in fluid communication with the bottom opening; a lower member selectively coupled to the upper member, the lower member having a first surface, a second surface, and defining an inner cavity having an inner surface, wherein the first surface defines a first opening and the second surface defines a second opening, the second opening of the lower member in selective fluid communication with the vacuum source, and wherein the inner cavity is in fluid communication with the first opening and the second opening; and an membrane disposed therein the inner cavity and coupled to the first opening of the lower member, the membrane having an interior surface and an exterior surface, the membrane forming generally defining an expandable interior cavity that is in communication with the first opening of the lower member, and wherein, in use, the lower member is selectively coupled to the upper and the bottom opening of the upper member is in sealed contact with the first opening of the lower member so that the vacuum source is in fluid communication with the interior cavity of the membrane.