Diaphragm pressure pod for medical fluids

摘要

A tubular medical fluid flow set comprises a pressure sensing chamber connected in flow-through relation to fluid flow tubing of the set. The pressure sensing chamber defines a movable, flexible, impermeable diaphragm dividing the chamber into two separate compartments. The fluid flow tubing communicates with one of the compartments and is isolated from the other of the compartments. A port is carried on the chamber, the port having a seal therein, and communicating with the other of the compartments. Thus, the other of the compartments is hermetically sealed until the port is opened for connection with a pressure measuring device, to keep the flexible diaphragm in a desired, initial position prior to opening of the seal.

主权项

1. A pressure sensing pod for a tubular medical fluid flow set which connects in flow-through relation to fluid flow tubing of said set, said pressure sensing pod comprising:
a chamber having a movable, flexible, impermeable diaphragm dividing the chamber into two separate compartments, the fluid flow tubing being in fluid communication with one of said compartments and being isolated from the other of said compartments; and a port carried on said pod, said port having a seal therein, said port being in fluid communication with the other of said compartments, wherein said other of said compartments is hermetically sealed by said seal in said port until connection with a pressure measuring device causes said seal to open, to keep the flexible diaphragm in a desired, initial position prior to opening of said seal.