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US 2017/0361006 A1Published application
Adaptive system for blood fluid removal
AssigneeMedtronic, Inc.
InventorsMartin Gerber, John Burnes, SuPing Lyu, VenKatesh R. Manda, Bryant Pudil
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Abstract
Methods for monitoring patient parameters and blood fluid removal system parameters include identifying those system parameters that result in improved patient parameters or in worsened patient parameters. By comparing the patient's past responses to system parameters or changes in system parameters, a blood fluid removal system may be able to avoid future use of parameters that may harm the patient and may be able to learn which parameters are likely to be most effective in treating the patient in a blood fluid removal session.
Claims19
A method carried out by a blood fluid removal system, comprising:
- initiating a blood fluid removal session, using a blood fluid removal device, with initial system parameters;
- acquiring a first set of data regarding one or more patient physiological parameters, wherein the one or more patient physiological parameters include at least one of pH and concentration of an electrolyte wherein at least one patient physiological parameter is measured in a dialysate;
- storing the first data set in a most effective to date data set memory;
- associating the initial system parameters in an increased effectiveness lookup table with the first data set;
- adjusting at least one parameter of the blood fluid removal session by adjusting the dialysate to arrive at adjusted system parameters;
- acquiring a second set of data regarding the one or more patient physiological parameters after the at least one parameter of the blood fluid removal session has been adjusted;
- and
- determining which of the first and second set of data includes at least one value closer to a target value;
- storing in the increased effectiveness lookup table data regarding the data set having at least one value closer to the target value;
- and associating data regarding the adjusted system parameters with the data set having at least one value closer to the target value;
- and
- repeating the process beginning with acquiring a first set of data regarding one or more patient physiological parameters;
- storing the first data set in a least effective to date data set memory;
- associating the initial system parameters in a decreased effectiveness lookup table with the first data set prior to adjusting the at least one parameter of the blood fluid removal session;
- determining which of the first and second set of data includes at least one value further from the target value;
- storing in the decreased effectiveness lookup table data regarding the data set having at least one value further from the target value;
- and associating data regarding the adjusted system parameters with the data set having at least one value further from to the target value;
- replacing the data in the least effective to date data set with the data from the data set having at least one value further from the target value;
- and
- continuing the blood fluid removal session with the system parameters in the most effective to date data set;
- wherein the blood fluid removal system performs at least one blood fluid removal process selected from the group consisting of ultrafiltration, hemofiltration, hemodialysis, hemodiafiltration and peritoneal dialysis.
18 more elements
The system of claim 10, wherein the blood fluid removal medium and the control electronics are housed within a blood fluid removal device.
A blood fluid removal system comprising:
- a blood fluid removal medium configured to remove blood from a patient, wherein blood enters the medium, fluid is removed from the blood, and blood exits the medium;
- one or more control elements configured to control (i) the rate at which the medium removes fluid from the blood or (ii) the concentration of electrolytes or pH in the blood that exits the medium;
- one or more sensors configured to monitor one or more physiological parameter of the patient;
- wherein at least one physiological parameter of the patient is measured in a dialysate;
- and
- control electronics comprising memory and a processor, wherein the control electronics are in operable communication with the one or more sensors and are operably coupled to the one or more control elements,
- wherein the control electronics are configured to (i) initiate a blood fluid removal session with initial system parameters;
- (ii) acquire a first set of data regarding one or more patient physiological parameters;
- (iii) store the first data set in a most effective to date data set memory;
- (iv) associate the initial system parameters in an increased effectiveness lookup table with the first data set;
- (v) adjust at least one parameter of the blood fluid removal session to arrive at adjusted system parameters;
- (vi) acquire a second set of data regarding the one or more patient physiological parameters after the at least one parameter of the blood fluid removal session has been adjusted;
- and (vii) if at least one value of the second data set is closer to the target value than a corresponding at least one value of the first data set:
- replace the first data set in the most effective to date data set memory with the second data set;
- store in the increased effectiveness lookup table data regarding the second data set;
- and associate data regarding the adjusted system parameters with the second data set.
13 more elements
A non-transitory computer-readable medium comprising instructions that, when executed by a blood fluid removal device, cause the device to initiate a blood fluid removal session with initial system parameters;
- acquire a first set of data regarding one or more patient physiological parameters, wherein the one or more patient physiological parameters include at least one of pH and concentration of an electrolyte;
- and wherein at least one patient physiological parameter is measured in a dialysate;
- store the first data set in a most effective to date data set memory;
- associate the initial system parameters in an increased effectiveness lookup table with the first data set;
- adjust at least one parameter of the blood fluid removal session by adjusting the dialysate to arrive at adjusted system parameters;
- acquire a second set of data regarding the one or more patient physiological parameters after the at least one parameter of the blood fluid removal session has been adjusted;
- and
- determine which of the first and second set of data includes at least one value closer to a target value;
- store in the increased effectiveness lookup table data regarding the data set having at least one value closer to the target value;
- and associate data regarding the adjusted system parameters with the data set having at least one value closer to the target value;
- repeat the process beginning with acquiring a first set of data regarding one or more patient physiological parameters;
- store the first data set in a least effective to date data set memory;
- associate the initial system parameters in a decreased effectiveness lookup table with the first data set prior to adjusting the at least one parameter of the blood fluid removal session;
- determine which of the first and second set of data includes at least one value further from the target value;
- store in the decreased effectiveness lookup table data regarding the data set having at least one value further from the target value;
- and associate data regarding the adjusted system parameters with the data set having at least one value further from to the target value;
- replace the data in the least effective to date data set with the data from the data set having at least one value further from the target value;
- and
- continue the blood fluid removal session with the system parameters in the most effective to date data set;
- wherein the blood fluid removal system performs at least one blood fluid removal process selected from the group consisting of ultrafiltration, hemofiltration, hemodialysis, hemodiafiltration and peritoneal dialysis.
17 more elements
A method carried out by a blood fluid removal system, comprising:
- collecting first data regarding a patient, the data including one or more of a physiological parameter and time since last blood fluid removal session;
- wherein at least one physiological parameter is measured in a dialysate;
- collecting second data regarding system parameters employed in blood fluid removal sessions of the patient;
- determining, based on the first and second collected data, whether at least one physiological parameter of the patient improved as a result of the system parameters employed;
- determining whether a value of current patient data is within a predetermined range of a corresponding value of first collected data;
- and
- employing the system parameters that resulted in improvement, if such parameters are determined to exist and if the current patient data is determined to be within the predetermined range.
4 more elements
A blood fluid removal system comprising:
- a blood fluid removal medium configured to remove blood from a patient, wherein blood enters the medium, fluid is removed from the blood, and blood exits the medium;
- one or more control elements configured to control (i) the rate at which the medium removes fluid from the blood or (ii) the concentration of electrolytes or pH in the blood that exits the medium;
- one or more sensors configured to monitor one or more physiological parameter of the patient;
- wherein at least one physiological parameter of the patient is measured in a dialysate;
- an input configured to allow entry of data regarding patient or system parameters;
- and
- control electronics comprising memory and a processor, wherein the control electronics are in operable communication with the one or more sensors and are operably coupled to the one or more control elements and the input,
- wherein the control electronics are configured to:
- collect first data regarding a patient, the data including one or more of a physiological parameter and time since last blood fluid removal session;
- collect second data regarding system parameters employed in blood fluid removal sessions of the patient;
- determine, based on the first and second collected data, whether at least one physiological parameter of the patient improved as a result of the system parameters employed;
- determine whether a value of current patient data is within a predetermined range of a corresponding value of first collected data;
- and
- employ the system parameters that resulted in improvement, if such parameters are determined to exist and if the current patient data is determined to be within the predetermined range.
11 more elements
A computer-readable medium comprising instructions that, when executed by a blood fluid removal device, cause the device to collect first data regarding a patient, the data including one or more of a physiological parameter and time since last blood fluid removal session;
- wherein at least one physiological parameter is measured in a dialysate;
- collect second data regarding system parameters employed in blood fluid removal sessions of the patient;
- determine, based on the first and second collected data, whether at least one physiological parameter of the patient improved as a result of the system parameters employed;
- determine whether a value of current patient data is within a predetermined range of a corresponding value of first collected data;
- and
- employ the system parameters that resulted in improvement, if such parameters are determined to exist and if the current patient data is determined to be within the predetermined range.
3 more elements
Dependencies are inferred from the claim text.