Dialysis Sodium Intake Calculation Device
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Solution Overview
Problem
Current methods for determining sodium intake in dialysis patients are inaccurate and difficult to implement, particularly for those with impaired renal function, as they rely on manual calculations and blood analyses, which are impractical and do not account for individual variations in plasma sodium concentration and residual renal function.
Innovation Solution
A calculation device and medical blood treatment apparatus that calculate interdialytic sodium intake and liquid intake using stored formulas, input parameters, and real-time measurements from the medical blood treatment apparatus, including plasma sodium concentration and urine sodium concentration, to provide accurate and continuous monitoring and control of sodium balance during dialysis sessions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual calculations and blood analyses are used to determine sodium intake, then measurement capability is provided, but measurement precision and ease of operation deteriorate due to impracticality and inability to account for individual variations
Solution Approach 1:
The patent replaces manual calculation methods with an automated computing device that performs sodium intake calculations using stored formulas and real-time parameter inputs. The control device automatically processes plasma sodium concentration, urine sodium concentration, and other parameters to determine interdialytic and daily sodium intake, eliminating manual computation errors and improving both precision and ease of operation.
Solution Approach 2:
The system continuously monitors plasma sodium concentration and urine sodium concentration during dialysis sessions, feeding this data back to the computing device for real-time recalculation of sodium intake. This feedback mechanism allows the system to account for individual variations in plasma sodium concentration and residual renal function, significantly improving measurement accuracy.
2Ease of operation
If automated calculation with real-time measurements is implemented, then measurement precision and ease of operation improve, but device complexity increases
Solution Approach 1:
The control device of the medical blood treatment apparatus is designed to perform multiple functions: it controls the dialysis treatment parameters, monitors plasma and urine sodium concentrations, stores calculation formulas, and computes sodium intake. By making the control device universal and multi-functional, the patent avoids adding separate dedicated hardware, thereby improving ease of operation without proportionally increasing device complexity.
Solution Approach 2:
The patent merges the calculation device with the existing control device of the medical blood treatment apparatus. The computing device integrates the formula storage, parameter input processing, and sodium intake calculation functions into the already-present control system, eliminating the need for separate standalone equipment and reducing overall system complexity.
3Measurement precision
If individual variations in plasma sodium concentration and residual renal function are accounted for, then measurement precision improves, but device complexity and measurement difficulty increase
Solution Approach 1:
The system automatically retrieves and processes individual patient parameters including plasma sodium concentration, urine sodium concentration, and residual renal function data without requiring manual intervention. The computing device self-adjusts calculations based on each patient's unique physiological parameters, improving measurement precision while keeping the operation simple for medical staff.
Data Source
AI summary
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.