摘要:
The invention concerns a fluid bag that contains either dialysis fluid for hemodialysis or a replacement fluid for replacing ultra-filtrate that is withdrawn from a patient or a fluid that is a rest product from a process of hemodialysis or the like. The fluid bag has a first main sheet and a second main sheet located opposite to the first main sheet. The fluid bag is sized to contain at least a certain quantity (q) of fluid, measured in ml, when it is completely filled with fluid. The fluid bag is configured so that the distance between the first and second sheets never exceeds a certain value (v), measured in mm, wherein: q≧2000, and v≦2q/100. The invention also concerns a fluid bag assembly including one or more such fluid bags as well as a system including one or more such fluid bags.
摘要:
A method of detecting the detachment of the venous needle from a patient during an extracorporeal blood treatment in a dialysis machine having an extracorporeal blood circuit provided with an arterial branch and a venous branch. The arterial pressure (Pa) is measured in the arterial branch and the venous pressure (Pv) is measured in the venous branch, and the determination is made of whether or not decreases of the arterial pressures (Pa) and venous pressures (Pv) are occurring during the dialysis treatment in normal conditions.
摘要:
A dialysis machine comprises: means for calculating (60) a filtration factor (FF) as a function of the ultrafiltration rate (UFR) and of a plasma flow rate (Qp); first comparison means (65) for comparing the filtration factor (FF) with a limit value of admissibility; and signaling means (70) for generating a signal (A) indicating the result of the comparison.
摘要:
Control equipment for an extracorporeal blood circuit (2), in which the extracorporeal circuit (2) has an access branch (8) and a return branch (10) connected to a blood treatment element (4; 4, 11a; 4, 11v; 25; 25, 11a; 25, 11v), is provided with a sensor for measuring a first temperature (TP) of the blood leaving a patient (P) along the access branch (8), with a heat exchanger formed by a portion (19) of the return branch (10) and by a device for regulating the temperature (T) of the blood coupled to the portion (19) of the return branch (10), and with a control unit (15) for operating the regulating device (18) as a function of the first temperature (TP) and of a reference temperature (Tset).
摘要:
A method to determine a type of blood circuit attached to an extracorporeal blood treatment console including: pumping a liquid through a blood passage of the blood circuit, sensing a first pressure in: the blood passage while the passage is closed and pumping stopped, pumping an additional amount of the liquid into the blood passage while the blood passage is and remains closed and thereafter sensing a second pressure, and determine a dimensional characteristic of a fluid passage in the blood passage based on the additional amount of the liquid and the second pressure.
摘要:
A non-invasive device for measuring blood temperature in a circuit for the extracorporeal circulation of blood includes a line in which blood taken from a patient flows. The device also includes a temperature sensor connected to the line and provided with a device for measuring the intensity of an electromagnetic radiation. The measuring device faces a connecting portion or window of the line that is permeable by electromagnetic radiation in a first wave band, and generates a first signal, correlated with the electromagnetic radiation in the first band and therefore with the temperature of the blood flowing in the line.
摘要:
The apparatus for blood flow control in an extracorporeal circuit comprises: a user interface for setting a desired blood flow value (qbREAL) and a datum relating to the vascular access, a memory for recording a plurality of mathematical relations having mathematical expressions relating to the vascular access organ to be used, and a control unit. The control unit identifies the vascular access, selects, from among the plurality of mathematical relations present in the memory, a relation which corresponds to the vascular access identified, and calculates, as a mathematical function of the set value for the desired flow (qbREAL), a value at which to set the angular velocity of the pump associated to the extracorporeal circuit and/or a theoretical value of the arterial pressure upstream of the pump.
摘要:
A method for preparing a medical liquid from a liquid, such as water, and two concentrated solutions comprises the following steps: circulating the liquid in a conduit (15), at a flowrate Q0; injecting into the conduit (15), at a flowrate Q1, a first concentrated solution containing a first ionic substance A and a second ionic substance B, the ionic substances A and B having, respectively, in the first concentrated solution, a concentration [Asol] and a first concentration [B1sol]; injecting into the conduit (15), at a flowrate Q2, a second concentrated solution containing the first ionic substance A and the second ionic substance B, the first ionic substance A having, in the second concentrated solution, the same concentration [Asol] as in the first concentrated solution, and the second ionic substance B having, in the second concentrated solution, a second concentration [B2sol] different than the first concentration [B1sol] in the first concentrated solution; regulating the injection flowrate Q1 and the injection flowrate Q2 of the first and second concentrated solutions in such a way that at any given time the diluted solution resulting from the mixing of the liquid and the concentrated solutions has a desired concentration [Ades] of first substance A and a desired concentration [Bdes] of second substance B.
摘要:
A method for measuring the hemoglobin concentration in the blood in a circuit of a dialysis machine includes directing electromagnetic waves against one section of the circuit, measuring values of the electromagnetic waves transmitted through the section, and determining values of absorption of electromagnetic waves by the blood along the section from the measured values of transmitted electromagnetic waves. The values of absorption are correlated with the values of the hemoglobin concentration. The method also includes measuring the values of at least one physical quantity of the blood, wherein the at least one physical quantity is selected from blood pressure and blood temperature, and calculating the values of hemoglobin concentration as a function of the values of absorption and the at least one physical quantity.
摘要:
A method for continuously determining a parameter (D, Cbin, K, Kt/V) indicative of an extracorporeal blood treatment includes flowing patient's blood and a treatment liquid flow on opposite sides of a semipermeable membrane. The treatment liquid has a characteristic (Cd) associated with the effectiveness of the treatment flow through the exchanger. A succession of variations are caused in the characteristic (Cd) upstream of the exchanger, and a plurality of values (Cdin1 . . . Cdinj . . . Cdinp) of the characteristic (Cd) upstream of the exchanger are continuously stored in memory. Similarly, plurality of values (Cdout1 . . . Cdoutj . . . Cdoutp) adopted by the characteristic (Cd) downstream of the exchanger are continuously stored in memory. From the stored values, the effectiveness of the treatment is calculated using a mathematical model.