CASSETTE FOR DIFFERENTIAL PRESSURE BASED MEDICATION DELIVERY FLOW SENSOR ASSEMBLY FOR MEDICATION DELIVERY MONITORING AND METHOD OF MAKING THE SAME
First Claim
1. A differential pressure based flow sensor assembly to determine the flow rate of a fluid system comprising:
- a disposable portion having;
a body defining a fluid flow passage forming an inlet and an outlet, the body having a base portion and a lid portion;
a flexible fluid pressure membrane disposed along the fluid flow passage between the inlet and the outlet, the fluid pressure membrane positioned between the base portion and the lid portion of the body; and
a flow restricting element positioned in the fluid flow passage between the inlet and the outlet;
wherein the fluid pressure membrane defines an opening for receiving the flow restricting element; and
a reusable portion having;
an upstream fluid pressure sensor to sense an upstream fluid pressure at an upstream location in the fluid flow passage between the inlet and the flow restricting element; and
a downstream fluid pressure sensor to sense a downstream fluid pressure at a downstream location in the fluid flow passage between the flow restricting element and the outlet.
3 Assignments
0 Petitions
Accused Products
Abstract
A disposable assembly for use with a sensor assembly, and method for making the same, the disposable comprises a body, a flow restricting element, and a fluid pressure membrane. The body has a lid portion and a base portion. The body defines a fluid flow passage that forms an inlet and an outlet. The flow restricting element is positioned along the fluid flow passage between the inlet and the outlet. The fluid pressure membrane is at a location in the fluid flow passage between the inlet and the outlet. The fluid pressure membrane defines an opening for receiving the flow restricting element. The fluid pressure membrane is located between the lid portion and the base portion of the body.
-
Citations
32 Claims
-
1. A differential pressure based flow sensor assembly to determine the flow rate of a fluid system comprising:
-
a disposable portion having; a body defining a fluid flow passage forming an inlet and an outlet, the body having a base portion and a lid portion; a flexible fluid pressure membrane disposed along the fluid flow passage between the inlet and the outlet, the fluid pressure membrane positioned between the base portion and the lid portion of the body; and a flow restricting element positioned in the fluid flow passage between the inlet and the outlet; wherein the fluid pressure membrane defines an opening for receiving the flow restricting element; and a reusable portion having; an upstream fluid pressure sensor to sense an upstream fluid pressure at an upstream location in the fluid flow passage between the inlet and the flow restricting element; and a downstream fluid pressure sensor to sense a downstream fluid pressure at a downstream location in the fluid flow passage between the flow restricting element and the outlet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A disposable assembly for use with a sensor assembly, the disposable assembly comprising:
-
a body having a lid portion and a base portion, the body defining a fluid flow passage forming an inlet and an outlet; a flow restricting element positioned in the fluid flow passage between the inlet and the outlet; and a flexible fluid pressure membrane disposed along the fluid flow passage between the inlet and the outlet, the fluid pressure membrane defining an opening for receiving the flow restricting element. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
-
-
24. A method of forming a disposable flow sensor assembly comprising the steps of:
-
providing a base portion, a lid portion, a flow restricting element and a flexible fluid pressure membrane; forming an opening in one of the base portion and the fluid pressure membrane for receiving the flow restricting element; inserting the flow restricting element into the opening; positioning the fluid pressure membrane and the flow restricting element between the base portion and the lid portion; and securing the lid portion to the base portion. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32)
-
Specification