MEDICAL FLUID CASSETTE LEAK DETECTION METHODS AND DEVICES

摘要

A method is provided for detecting leaks in a disposable medical fluid cassette that includes a base and a flexible membrane attached to the base in such a way that the base and the flexible membrane cooperate to at least partially form a fluid passageway. The method includes applying a first force to the flexible membrane, measuring a first physical property of a system that includes the medical fluid cassette a medical fluid pumping machine, removing the first force from the flexible membrane, applying a second force to the flexible membrane, measuring a second physical property of the system, and determining whether the medical fluid cassette leaks based on a comparison of the first physical property and the second physical property.

主权项

1. A method of detecting leaks in a disposable medical fluid cassette, the medical fluid cassette comprising a base and a flexible membrane attached to the base in such a way that the base and the flexible membrane cooperate to at least partially form a fluid passageway, the method comprising:
applying a first force to the flexible membrane; measuring a first physical property of a system that includes the medical fluid cassette and a medical fluid pumping machine while the first force is applied to the flexible membrane; removing the first force from the flexible membrane; applying a second force to the flexible membrane; measuring a second physical property of the system that includes the medical fluid cassette and the medical fluid pumping machine while the second force is applied to the flexible membrane; and determining whether the medical fluid cassette leaks based on a comparison of the first physical property and the second physical property.