System, method, and apparatus for utilizing a pumping cassette

摘要

The present invention involves, in some embodiments, systems and methods for performing an integrity test on a medical grade cassette that is configured to be used on a medical fluid handling system, wherein the cassette may be disposable and may comprise a membrane therein. The test may be configured to determine an error condition, such as detection of membrane leakage above a threshold value, and may in certain cases be implemented by a medical computer system. In certain cases the integrity test is a dry integrity test and in certain cases, the test is configured to determine a leakage rate of fluid through the membrane.

主权项

1. A method for performing a dry integrity test on a medical-grade cassette, the medical-grade cassette being a single-use disposable cassette that can removably mate with a reusable portion of a dialysis machine, the method comprising:
adjusting a pressure of a pressure tank in the reusable portion; closing a valve in the reusable portion of the dialysis machine connecting the pressure tank to a membrane of a medical-grade disposable cassette; measuring a first pressure of the pressure tank within the reusable portion; opening the valve in the reusable portion; measuring a second pressure of the pressure tank; determining a difference between the first and second pressures; and determining whether the membrane of the medical-grade disposable cassette is leaking above a threshold using the difference.