Pressure Valve Substitution Fluid Control for Blood Treatment
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Solution Overview
Problem
Manual operation of fluid connections between substitution fluid containers and the extracorporeal blood circuit in extracorporeal blood treatment is laborious, time-intensive, and prone to unpredictable user intervention, as each container must be opened individually to prevent incompatibility reactions.
Innovation Solution
An apparatus with a substitution line and pump system that includes pressure valves between containers, allowing fluid flow only when the opening pressure is exceeded, enabling sequential use of multiple containers with staggered opening pressures, reducing the need for manual intervention and optimizing container usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual opening of fluid connections for each container is performed, then incompatibility reactions can be tracked to specific containers, but the process becomes laborious, time-intensive, and requires frequent personnel intervention
Solution Approach 1:
The system enables self-service operation where the apparatus automatically manages fluid connections between containers and the blood circuit without requiring manual intervention. The control unit automatically opens and closes fluid connections based on treatment progress, eliminating the need for personnel to manually connect each container while maintaining the ability to track which container is currently connected for incompatibility monitoring.
2Ease of operation
If manual opening of fluid connections is performed for every container, then precise control over substitution fluid administration is possible, but user intervention becomes unpredictable and time-consuming
Solution Approach 1:
The patent replaces manual mechanical operations with an automated control system. The control unit electronically controls the opening and closing of fluid connections between containers and the blood circuit, substituting human manual operations with automated electronic control. This maintains precise control over substitution fluid administration while eliminating unpredictable user intervention and associated time losses.
3Duration of action of moving object
If multiple containers are connected to the substitution line, then continuous substitution fluid supply is possible, but manual connection of each container increases device complexity and operational burden
Solution Approach 1:
The control unit serves multiple functions: it automatically manages fluid connections between multiple containers and the blood circuit, monitors treatment progress, and controls the sequential or simultaneous operation of multiple containers. This multi-functionality allows continuous substitution fluid supply from multiple containers without proportionally increasing operational complexity, as a single control unit manages all containers.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Automates the fluid connection process, reducing labor and time requirements while ensuring sequential use of containers, thereby minimizing the risk of incompatibility reactions and improving the efficiency of extracorporeal blood treatment.
Implementation Method 1
Since the containers are arranged at the intake side of the pump, a vacuum is generated by the pump downstream of the valves and the opening pressure results from the pressure difference between the normal pressure upstream of the valve and the vacuum downstream of the valves.
Implementation Method 2
the opening pressure results from the pressure difference between the normal pressure upstream of the valve and the vacuum downstream of the valves
Implementation Method 3
a pressure valve is arranged between the pump and at least one of the containers, said pressure valve allowing a flow of substitution fluid to the pump on an exceeding of an opening pressure
Data Source
AI summary
The invention relates to an apparatus for carrying out an extracorporeal blood treatment in which a substitution fluid is administered to the patient, wherein the apparatus comprises an extracorporeal blood circuit and a substitution line opening into the extracorporeal blood circuit, wherein the substitution line has a pump for conveying substitution fluid into the extracorporeal circuit, wherein at least two, and preferably more than two, containers for the provision of a substitution fluid are connected separately and at the intake side of the pump to the substitution line, and wherein at least one pressure valve is arranged between the pump and at least one of the containers, said pressure valve allowing a flow of substitution fluid to the pump on an exceeding of an opening pressure.