| 主权项 |
1. Medical apparatus (1) comprising:
at least one machine (2) for extracorporeal blood treatment having: at least a blood treatment unit (3); an extracorporeal blood line (4) having a withdrawal branch (5) adapted to withdraw blood from a patient access (6) and to bring the withdrawn blood to the blood treatment unit (3) and a return branch (7) adapted to bring the blood from the blood treatment unit (3) to the patient; at least one sensor (8) associated to the extracorporeal blood line (4) and adapted to provide a measure related to a blood parameter value in the blood circulating in the extracorporeal blood line (4); wherein said blood parameter value depends on the blood characteristic of the specific patient and is selected in the group comprising: blood density, blood hematocrit, blood hemoglobin concentration, mean blood cellular volume; a control unit (9); at least one storage memory (10) for storing measures related to the blood parameter value, each measure being made through one of the sensors (8) of said prefixed number of machines (2) and each corresponding to different treatment sessions of patients on said prefixed number of machines (2); the control unit (9) being configured for performing the following steps:
taking from the storage memory (10) a plurality of measures related to the blood parameter value, each measure being made through one of the sensors (8) of said prefixed number of machines (2) at different patient treatment sessions, said plurality of measures relating to the same patient;receiving at least an actual control value of the same blood parameter relating to the same patient, said actual control value being measured at a monitoring time; wherein said actual control value is a real absolute value of the blood parameter measured through laboratory measurements;determining a correcting factor function of a difference between a prefixed number of measures made through the sensors (8) and the actual control value of the blood parameter, obtaining an actual value of said blood parameter by varying at least the last measure made through the sensor by means of the correcting factor;interpolating said plurality of measures made through the sensor (8) for obtaining an interpolated curve (12) defining a blood parameter trend along time;determining the correcting factor as a difference between the actual control value of the blood parameter and a time-corresponding value of the blood parameter in the interpolated curve; andtranslating at least a last part (12a) of the interpolated curve (12) by means of the correcting factor, the last part (12a) of the interpolated curve (12) comprising at least the last two measured blood parameter values. |
