Device and method for determining an optimum dialysate flow for an extracorporeal blood treatment with an extracorporeal blood treatment device

    公开(公告)号:US10569001B2

    公开(公告)日:2020-02-25

    申请号:US15501180

    申请日:2015-07-20

    IPC分类号: A61M1/16 A61M1/34

    摘要: The invention relates to a method and to a device for determining an optimum dialysate flow Qdopt for an extracorporeal blood treatment and to a blood treatment device comprising a device 18 for determining an optimum dialysate flow Qdopt. The optimum dialysate flow Qdopt is determined on the basis of a relationship describing the dependence of the clearance K on the dialysate flow Qd. The device according to the invention comprises a measurement device 18B for measuring at least one value which is characteristic of the clearance K, a calculation and/or evaluation unit 18A of the device according to the invention being configured in such a way that the clearance K is determined on the basis of the at least one value which is characteristic of the clearance. The calculation and/or evaluation unit 18A is configured in such a way that the optimum dialysate flow Qdopt is determined from the relationship describing the dependence of the clearance K on the dialysate rate Qd on the basis of the measured clearance K, or the optimum dialysate flow Qdopt is determined from the measured clearance K.

    Device for an extracorporeal blood treatment, and method for determining a hemodynamic parameter during an extracorporeal blood treatment

    公开(公告)号:US11596725B2

    公开(公告)日:2023-03-07

    申请号:US16619477

    申请日:2018-06-07

    IPC分类号: A61M1/36

    摘要: The invention relates to a device for extracorporeal blood treatment, comprising a blood treatment unit 1 that comprises at least one compartment 4. The invention further relates to a method for determining a hemodynamic parameter during an extracorporeal blood treatment by means of an extracorporeal blood treatment device. In order to determine the hemodynamic parameter, the conveying direction of the blood pump 10 is reversed from a “normal” blood flow to a “reversed” blood flow. In practice, it has been found that reversing the conveying direction of the blood pump for a measurement for determining a hemodynamic parameter carries the risk of blood clots reaching the patient, despite the dialyser holding back blood clots. The blood treatment device comprises an input unit 23 for inputting a time interval which can be specified by the user, taking into account the patient-specific and system-specific factors. The control and evaluation unit 12 of the blood treatment device is configured such that the operation of the blood pump 10 in the operating mode involving a reversed blood flow is only enabled during the time interval input by means of the input unit, the start of the time interval being determined from the point at which the blood treatment starts.

    CALCULATION DEVICE AND DIALYSIS APPARATUS

    公开(公告)号:US20220313879A1

    公开(公告)日:2022-10-06

    申请号:US17616865

    申请日:2020-06-03

    摘要: The present disclosure relates to a calculation device for determining an interdialytic sodium intake of a patient and/or for determining a non-osmotically triggered interdialytic liquid intake, including a storage device and/or an input device configured for storing or for entering parameter values of the patient; a computing device, configured for calculating the interdialytic sodium intake of the patient and/or for calculating his non-osmotically triggered interdialytic liquid intake; and an output device for outputting a signal for controlling or closed-loop controlling a communication device and/or a medical blood treatment apparatus.

    Device for extracorporeal blood treatment and device for collecting blood clots, and method for determining a hemodynamic parameter during an extracorporeal blood treatment

    公开(公告)号:US11324868B2

    公开(公告)日:2022-05-10

    申请号:US16619476

    申请日:2018-06-07

    IPC分类号: A61M1/16 A61M1/26 A61M1/36

    摘要: The invention relates to an apparatus for extracorporeal blood treatment, comprising a blood treatment unit 1 that comprises at least one compartment 3. The invention further relates to an apparatus 15A, 15B for collecting blood clots for a blood line 5, 7 for supplying blood to or removing blood from a blood treatment unit 1 of an extracorporeal blood treatment apparatus, and to a method for determining a hemodynamic parameter during extracorporeal blood treatment using an extracorporeal blood treatment apparatus. In order to determine the hemodynamic parameter, the conveying direction of the blood pump 10 is reversed from a “normal” blood flow to a “reversed” blood flow. It has been found in practice that, in the event of a reversal in the conveying direction of the blood pump in order to carry out a measurement for determining a hemodynamic parameter, there is a risk of blood clots reaching the patients, although the dialyser traps blood clots. The apparatus according to the invention provides an apparatus 15A for catching blood clots, at least in the blood line of the extracorporeal blood circuit I that leads to the blood treatment unit 1 during a “normal blood flow”. The blood treatment unit traps blood clots during blood treatment having a “normal” blood flow. In the case of a “reversed” blood flow, the apparatus for catching blood clots in the blood line that leads to the blood treatment unit 1 during a “normal blood flow” traps blood clots that may have previously accumulated at the inlet of the blood treatment unit.

    Dialysis machine having the capability of determining a predialytic property in the blood of a dialysis patient

    公开(公告)号:US10349876B2

    公开(公告)日:2019-07-16

    申请号:US15504918

    申请日:2015-08-17

    摘要: The invention relates to a dialysis machine having the capability of determining a predialytic property in the blood of a dialysis patient which has an extracorporeal blood circuit, a dialyzate circuit, a dialyzer and a processing unit, wherein at least one sensor for determining a property of the dialyzate is arranged in the dialyzate circuit. The processing unit is configured such that temporal evaluation ranges are fixed during an initial phase of the dialysis treatment, in which temporal evaluation ranges all stability criteria from a predefined group are satisfied; and in that only measured values determined by the at least one sensor within these temporal evaluation ranges are used for determining a predialytic property of the patient's blood.