Monitron II Waveform Analyzer, REF: S00015-1, used with ventilators.

Reason: Note this recall occurred in 2020 and 2021. Reports of screen freeze on visual displays of waveform analyzers that are paired with ventilators. Subsequently, waveform analyzers were serviced to install PAL microprocessor chips and firmware.

Code information: UDI-DI: 00849436000068, Serial Numbers: WF21150, WF21159, WF21163, WF21164, WF21167, WF21171, WF21371, WF21372, WF21377, WF21378, WF21158, WF21391, WF21165, WF21166, WF21168, WF21169, WF21170, WF21172, WF21173, WF21174, WF21175, WF21176, WF21177, WF21178, WF21179, WF21182, WF21183, WF21184, WF21185, WF21186, WF21187, WF21188, WF21189, WF21190, WF21192, WF21193, WF21194, WF21195, WF21196, WF21197, WF21198, WF21199, WF21200, WF21201, WF21202, WF21203, WF21204, WF21205, WF21206, WF21207, WF21208, WF21209, WF21210, WF21211, WF21212, WF21213, WF21214, WF21215, WF21217, WF21218, WF21219, WF21220, WF21221, WF21222, WF21223, WF21224, WF21225, WF21226, WF21227, WF21228, WF21229, WF21230, WF21231, WF21232, WF21233, WF21234, WF21235, WF21236, WF21237, WF21238, WF21239, WF21240, WF21241, WF21242, WF21243, WF21244, WF21245, WF21246, WF21247, WF21248, WF21249, WF21250, WF21251, WF21252, WF21253, WF21254, WF21255, WF21256, WF21257, WF21258, WF21259, WF21260, WF21261, WF21262, WF21263, WF21264, WF21265, WF21266, WF21267, WF21268, WF21269, WF21270, WF21271, WF21272, WF21273, WF21274, WF21275, WF21276, WF21277, WF21278, WF21279, WF21280, WF21281, WF21282, WF21283, WF21284, WF21285, WF21286, WF21287, WF21288, WF21289, WF21290, WF21291, WF21292, WF21293, WF21294, WF21295, WF21296, WF21297, WF21298, WF21299, WF21300, WF21301, WF21302, WF21303, WF21304, WF21305, WF21306, WF21307, WF21308, WF21309, WF21310, WF21311, WF21312, WF21313, WF21314, WF21315, WF21316, WF21317, WF21318, WF21319, WF21320, WF21321, WF21322, WF21323, WF21324, WF21325, WF21326, WF21327, WF21328, WF21329, WF21330, WF21331, WF21332, WF21333, WF21334, WF21335, WF21336, WF21337, WF21338, WF21339, WF21340, WF21341, WF21342, WF21343, WF21344, WF21345, WF21346, WF21347, WF21348, WF21349, WF21350, WF21351, WF21352, WF21353, WF21354, WF21355, WF21356, WF21357, WF21358, WF21359, WF21360, WF21361, WF21362, WF21363, WF21364, WF21365, WF21366, WF21367, WF21368, WF21369, WF21370

Distribution pattern: US: CA, ND, MS, MD