I.V. pump cassette
First Claim
Patent Images
1. A cassette for use with an I.V. infusion pump which comprises:
- a housing forming a chamber having a first inlet, a second inlet, an outlet, and a port; and
a cylindrical valve body having a first end and a second end and formed with a first groove and a second groove at the edge of said first end for respective simultaneous alignment with said first inlet and said outlet, said valve body being disposed in said chamber of said housing to permit continuous fluid communication between said port and said chamber and selectively block said first inlet, said second inlet or said outlet to establish fluid communication through said chamber from said first inlet to said port, from said second inlet to said port, from said port to said outlet, or from said first inlet to said outlet.
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Accused Products
Abstract
A cassette for use with an I.V. infusion pump has a housing with a first inlet, a second inlet, an outlet, and a port to the I.V. infusion pump. A valve body is positioned within the housing to selectively establish fluid communication from the first inlet to the port, or from the second inlet to the port, or from the port to the outlet. Movement of the valve body within the housing into yet another position allows for the free flow of fluid directly between the first inlet or the second inlet and the outlet.
136 Citations
19 Claims
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1. A cassette for use with an I.V. infusion pump which comprises:
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a housing forming a chamber having a first inlet, a second inlet, an outlet, and a port; and a cylindrical valve body having a first end and a second end and formed with a first groove and a second groove at the edge of said first end for respective simultaneous alignment with said first inlet and said outlet, said valve body being disposed in said chamber of said housing to permit continuous fluid communication between said port and said chamber and selectively block said first inlet, said second inlet or said outlet to establish fluid communication through said chamber from said first inlet to said port, from said second inlet to said port, from said port to said outlet, or from said first inlet to said outlet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A cassette for use with an I.V. infusion pump which comprises:
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a housing formed with a fluid chamber and having a first inlet, a second inlet, an outlet, and a port; and a valve body having a first end and a second end and formed with a first groove and a second groove at the edge of said first end for respective simultaneoous alignment with said first inlet and said outlet, said valve body being disposed in said chamber of said housing to establish continuous fluid communication between said port and said chamber and being selectively positioned in said chamber to alternatively establish fluid communication between said chamber and either said first inlet, said second inlet, or said outlet, or to directly establish simultaneous fluid communication between said first inlet and said outlet through said chamber. - View Dependent Claims (15, 16)
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17. A cassette for use with an IV infusion pump which comprises:
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a housing formed with a chamber and having a first inlet, a second inlet, an outlet and a port for fluid communication with said chamber; a valve body having a first end and a second end and formed with a first groove and a second groove at the edge of said first end for respective simultaneous alignment with said first inlet and said outlet, said valve body being disposed in said chamber and rotatable therein to selectively block fluid communication between said chamber and either both said second inlet and said outlet, or both said first inlet and said outlet, or both said first inlet and said second inlet, or said second inlet alone. - View Dependent Claims (18, 19)
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Specification