Patent ID: 6358239
Filing Date: 2002-03-19
Classification: A61M,Y10S

Abstract:
An infusion pump for expelling fluid from a flexible reservoir comprising:a top shell removably connected to a bottom shell, said bottom shell having a non-planar interior bottom surface; a pressure plate movably connected to said top shell, said plate having a non-planar surface complementary to said interior bottom surface of said bottom shell, said pressure plate and said interior bottom surface of said bottom shell defining therebetween a variable-sized area for accepting the fluid reservoir therein; a shaft positioned between said top and bottom shells, said shaft having a first end and a second end; a first slide and a second slide slidably positioned on said shaft; four arms defining a parallelogram structure extending between said top shell, said first slide, said second slide, and said pressure plate, said arms rotatably connected to said top shell, said slide members and said pressure plate, said slide members and shaft supported by said arms between said shells; and biasing means positioned between said first end of said shaft and said first slide and between said second end of said shaft and said second slide for biasing said slides toward one another along said shaft, thereby biasing said pressure plate through said arms, downwardly towards said bottom shell when said top and bottom shells are connected.