Abstract: An apparatus is described for extracorporeal blood treatment, comprising a treatment unit, an extracorporeal blood circuit and a fluid evacuation line. The apparatus comprises a control unit connected to a pressure sensor and a blood pump, the blood pump generating a variable flow with a constant component and a variable component. The control unit receives, from the pressure sensor, a plurality of values and calculates the average pressure value, acquires an estimated value of volume variation in the expansion chamber connected to the variable flow component, calculates, as a function of the pressure values, an estimated value of pressure variation in the expansion chamber that is representative of an oscillating pressure component and determines a representative magnitude of a blood level in the expansion chamber as a function of the average pressure value, the estimated value of volume variation and the estimated pressure variation in the expansion chamber.

Abstract: An apparatus is described for extracorporeal blood treatment, comprising a treatment unit, an extracorporeal blood circuit and a fluid evacuation line. The apparatus comprises a control unit connected to a pressure sensor and a blood pump, the blood pump generating a variable flow with a constant component and a variable component. The control unit receives, from the pressure sensor, a plurality of values and calculates the average pressure value, acquires an estimated value of volume variation in the expansion chamber connected to the variable flow component, calculates, as a function of the pressure values, an estimated value of pressure variation in the expansion chamber that is representative of an oscillating pressure component and determines a representative magnitude of a blood level in the expansion chamber as a function of the average pressure value, the estimated value of volume variation and the estimated pressure variation in the expansion chamber.

Abstract: An apparatus is described for extracorporeal blood treatment, comprising a treatment unit, an extracorporeal blood circuit and a fluid evacuation line. The apparatus comprises a control unit connected to a pressure sensor and configured to move a blood pump, generating a variable flow with a constant component equal to a desired blood flow value and a variable component having a nil mean value; the variable flow generates, in the expansion chamber, a pressure progression that is variable over time with a pressure component oscillating about a mean value. The control unit receives a plurality of values over a period of time comprising a plurality of oscillations of the pressure about the mean value, calculates a control value representative of the oscillating pressure component, and then determines the verification or not of a condition of variation of the blood level in the expansion chamber.

Abstract: An apparatus is described for extracorporeal blood treatment, comprising a treatment unit, an extracorporeal blood circuit and a fluid evacuation line. The apparatus comprises a control unit connected to a pressure sensor and configured to move a blood pump, generating a variable flow with a constant component equal to a desired blood flow value and a variable component having a nil mean value; the variable flow generates, in the expansion chamber, a pressure progression that is variable over time with a pressure component oscillating about a mean value. The control unit receives a plurality of values over a period of time comprising a plurality of oscillations of the pressure about the mean value, calculates a control value representative of the oscillating pressure component, and then determines the verification or not of a condition of variation of the blood level in the expansion chamber.

Abstract: An apparatus is described for extracorporeal blood treatment (1), comprising a treatment unit (2), an extracorporeal blood circuit (8) and a fluid evacuation line (10). The apparatus comprises a control unit (21) connected with a pressure sensor (13, 14) and with a blood pump (9) and configured to move the blood pump (9), generating a variable flow (Q(t)) with a constant component (Qb) and a variable component (Qvar(t)) having a nil average value; the variable flow generates, in the expansion chamber (11, 12), a progression of the pressure that is variable over time (P(t)) with a pressure component (Pvar(t)) oscillating about an average value (Pavg).

Abstract: An apparatus is described for extracorporeal blood treatment (1), comprising a treatment unit (2), an extracorporeal blood circuit (8) and a fluid evacuation line (10). The apparatus comprises a control unit (21) connected with a pressure sensor (13, 14) and with a blood pump (9) and configured to move the blood pump (9), generating a variable flow with a constant component equal to a desired blood flow value and a variable component having a nil mean value; the variable flow generates, in the expansion chamber (11, 12), a progression of the pressure that is variable over time (P(t)) with a pressure component (?P) oscillating about a mean value (Pavg).

Abstract: An apparatus is described for extracorporeal blood treatment (1), comprising a treatment unit (2), an extracorporeal blood circuit (8) and a fluid evacuation line (10). The apparatus comprises a control unit (21) connected with a pressure sensor (13, 14) and with a blood pump (9) and configured to move the blood pump (9), generating a variable flow (Q(t)) with a constant component (Qb) and a variable component (Qvar(t)) having a nil average value; the variable flow generates, in the expansion chamber (11, 12), a progression of the pressure that is variable over time (P(t)) with a pressure component (Pvar(t)) oscillating about an average value (Pavg).

Abstract: An apparatus is described for extracorporeal blood treatment (1), comprising a treatment unit (2), an extracorporeal blood circuit (8) and a fluid evacuation line (10). The apparatus comprises a control unit (21) connected with a pressure sensor (13, 14) and with a blood pump (9) and configured to move the blood pump (9), generating a variable flow with a constant component equal to a desired blood flow value and a variable component having a nil mean value; the variable flow generates, in the expansion chamber (11, 12), a progression of the pressure that is variable over time (P(t)) with a pressure component (?P) oscillating about a mean value (Pavg).

Abstract: A medical apparatus comprises a user interface for setting parameters and includes: a screen for visualizing values of said parameters, a main control unit connected to the interface, a first memory and a video memory both connected to the main control unit for storing data corresponding to images on screen; the main control unit allows setting of a new value for a parameter, displays the new value on a screen region, stores the new value in the first memory, captures from the video memory data representative of said screen region, verifies from said representative data if the displayed value corresponds to the value in the first memory. A method for setting up a medical apparatus is also disclosed.

Abstract: A medical apparatus comprises a user interface for setting parameters and includes: a screen for visualizing values of said parameters, a main control unit connected to the interface, a first memory and a video memory both connected to the main control unit for storing data corresponding to images on screen; the main control unit allows setting of a new value for a parameter, displays the new value on a screen region, stores the new value in the first memory, captures from the video memory data representative of said screen region, verifies from said representative data if the displayed value corresponds to the value in the first memory. A method for setting up a medical apparatus is also disclosed.

Abstract: A method of setting up a dialysis treatment in a dialysis machine (1) provided with a device (6) for setting up the dialysis treatment, possessing a microprocessor (11), a data input (12, 13) and a screen (13), comprises the steps of: supplying a group of functions (U(t, P); C(t, P)) of a quantity (U; C) that is characteristic of the dialysis treatment as a function of time (t) and of a parameter (P) correlated with intermediate values (U1, C1) of each function (U(t; P); C(t; P)) of the group; selecting a subset of the group of functions (U(t, P); C(t; P)) imposing boundary conditions (U0, TWL, DT; C0, Cf, DT; C0, CS, DT) that are characteristic of a particular therapy; assigning values to the parameter (P) and displaying the curves corresponding to the functions (U(t, P); C(t, P)) of the subset and to the respective values assigned to parameter (P); and selecting one of the functions ((U(t, P); C(t, P)) of the subset on the basis of the images of the curves.

Abstract: A method of setting up a dialysis treatment in a dialysis machine may include the steps of determining conditions of a dialysis treatment adapted to a specific patient, determining a first function (U(t)) of a first quantity (U) characterizing the dialysis treatment as a function of time (t), and determining a second function (C(t)) of a second quantity (C) characterizing the dialysis treatment. The first function (U(t)) satisfying the conditions of the dialysis treatment and corresponding to a curve having a defined shape. The second function (C(t)) is correlated with the first function (U(t)) by constants (M, N) determined experimentally and the second function (U(t)) corresponding to a curve having a shape of the same kind as the shape as the first curve.

Abstract: A dialysis machine may include a main control unit provided with a memory that stores the parameters of a dialysis treatment carried out on a patient and a plurality of slave control units interacting with the main control unit. The slave control unit may provide the control of the dialysis treatment carried out on the patient. A functionality checking unit may include a memory that stores dialysis treatment parameters and interacts with the main control unit to carry out checking of the functionality of the dialysis machine. At predetermined intervals of time, the functionality checking unit may send the dialysis treatment parameters stored in its memory to the main control unit, and the main control unit may compare the dialysis treatment parameters stored in its memory with those sent from the functionality checking unit, and generate an alarm signal if the dialysis treatment parameters do not coincide with each other.

Abstract: A method of setting up a dialysis treatment in a dialysis machine (1) provided with a device (6) for setting up the dialysis treatment, possessing a microprocessor (11), a data input (12, 13) and a screen (13), comprises the steps of: supplying a group of functions (U(t, P); C(t, P)) of a quantity (U; C) that is characteristic of the dialysis treatment as a function of time (t) and of a parameter (P) correlated with intermediate values (U1, C1) of each function (U(t; P); C(t; P)) of the group; selecting a subset of the group of functions (U(t, P); C(t; P)) imposing boundary conditions (U0, TWL, DT; C0, Cf, DT; C0, CS, DT) that are characteristic of a particular therapy; assigning values to the parameter (P) and displaying the curves corresponding to the functions (U(t, P); C(t, P)) of the subset and to the respective values assigned to parameter (P); and selecting one of the functions ((U(t, P); C(t, P)) of the subset on the basis of the images of the curves.

Abstract: A method of setting up a dialysis treatment in a dialysis machine (1) comprises the steps of: determining the conditions (U0, TWL, DT) of a dialysis treatment adapted to a specific patient; determining a first function (U(t)) of a first quantity (U) characterizing the dialysis treatment as a function of time (t), the first function (U(t)) satisfying the conditions (U0, TWL, DT) of the dialysis treatment and corresponding to a curve having a defined shape; determining a second function (C(t)) of a second quantity (C) characterizing the dialysis treatment, the second function (C(t)) being correlated with the first function (U(t)) by constants (M, N) determined experimentally and the second function (U(t)) corresponding to a curve having a shape of the same kind as the shape as the first curve.

Abstract: The dialysis machine (1) comprises a main control unit (10) provided with a memory (24) which stores the parameters of the dialysis treatment carried out on the patient; a plurality of slave control means (12) interacting with the main control unit (10) to provide the control of the dialysis treatment carried out on the patient; and a functionality checking unit (30) provided with its memory (34) which store the dialysis treatment parameters, and interact with the said main control unit (10) to carry out the checking of the functionality of the dialysis machine (1).