Enhanced Fluid Balance Monitoring and Control System for Biological Fluid Procedures

Publication ID: 24-11857714_0001_PTD
Published: October 28, 2025
Category:Direct Improvements & Enhancements

Legal Citation

pr1or.art Inc., “Enhanced Fluid Balance Monitoring and Control System for Biological Fluid Procedures,” Published Technical Disclosure No. 24-11857714_0001_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857714_0001_PTD
This technical disclosure describes improvements that would be readily apparent to a Person Having Ordinary Skill In The Art (PHOSITA) when considered in combination with the foundational architecture disclosed in U.S. Patent No. 11,857,714.

Summary of the Inventive Concept

An improved system for monitoring and controlling fluid balance during biological fluid procedures, enabling real-time fluid volume measurement and adjustment to maintain a desired fluid balance, thereby minimizing fluid waste and optimizing fluid utilization.

Background and Problem Solved

The original patent disclosed systems and methods for monitoring and controlling fluid balance in medical procedures, specifically blood processing procedures. However, the existing patent had limitations in accurately measuring fluid volumes in real-time, leading to potential fluid imbalance and waste. The new inventive concept addresses these limitations by introducing real-time fluid volume sensors and advanced controllers to ensure precise fluid balance control.

Detailed Description of the Inventive Concept

The enhanced fluid balance monitoring and control system comprises a fluid volume sensor configured to measure fluid volumes in real-time, and a controller that adjusts the fluid volumes based on the measured volumes to maintain a desired fluid balance. The system can be integrated into biological fluid processing devices, enabling simultaneous measurement and control of fluid volumes. The controller can generate alerts and notifications based on the measured volumes, ensuring that the desired fluid balance is maintained. The system's real-time monitoring and control capabilities minimize fluid waste and optimize fluid utilization, resulting in improved efficiency and reduced costs.

Novelty and Inventive Step

The new claims introduce the concept of real-time fluid volume measurement and adjustment, which is not present in the original patent. The use of advanced controllers and fluid volume sensors enables precise fluid balance control, making the new inventive concept novel and non-obvious compared to the original patent.

Alternative Embodiments and Variations

Alternative embodiments of the inventive concept could include the use of different types of fluid volume sensors, such as ultrasonic or optical sensors, or the integration of the system with other medical devices, such as dialysis machines or blood analyzers. Variations could also include the development of portable or handheld devices for fluid balance monitoring and control.

Potential Commercial Applications and Market

The enhanced fluid balance monitoring and control system has significant commercial potential in the medical industry, particularly in blood processing and dialysis applications. The system's ability to minimize fluid waste and optimize fluid utilization can result in cost savings and improved efficiency for healthcare providers. Additionally, the system's real-time monitoring and control capabilities can improve patient safety and outcomes.

CPC Classifications

SectionClassGroup
A A61 A61M1/3607
A A61 A61M1/0209
A A61 A61M1/361
A A61 A61M1/3643
A A61 A61M1/3672
A A61 A61M1/3683
A A61 A61M1/3693
A A61 A61M1/3696
A A61 A61M1/38
A A61 A61M2202/0092
A A61 A61M2202/0407
A A61 A61M2202/0413
A A61 A61M2202/0415
A A61 A61M2202/0429
A A61 A61M2202/0439
A A61 A61M2202/0443
A A61 A61M2205/3386
A A61 A61M2205/50
A A61 A61M2230/005
A A61 A61M2230/207

Field of Art

Medical fluid processing systems, specifically blood processing and fluid balance control technologies involving centrifugal separation, pump systems, and real-time volume monitoring in medical procedures

Person of Ordinary Skill (PHOSITA) Profile

A biomedical engineer or medical device specialist with expertise in fluid handling systems, medical instrumentation, control systems, and fluid volume measurement techniques, typically holding a graduate degree in biomedical engineering or related field

Obviousness Rationale

A PHOSITA would recognize that adding real-time fluid volume sensing and adaptive control to an existing biological fluid processing system represents a predictable engineering enhancement. The source patent's fluid processing framework provides a natural foundation for integrating more precise monitoring technologies. The claimed variations represent incremental improvements using standard sensor and control techniques known in medical device engineering.

Obvious Combinations & Variations

Source Patent Element
Biological fluid processing device with separation chamber and pump system
PTD Variation
Adding real-time fluid volume sensors to monitor and dynamically adjust fluid volumes
Obviousness Reasoning
Integrating volume sensors is a known technique for improving process control, representing a predictable solution to enhance existing fluid processing systems
Source Patent Element
Controller configured to actuate pump systems for fluid transfer
PTD Variation
Expanding controller functionality to generate alerts and notifications based on measured fluid volumes
Obviousness Reasoning
Implementing notification systems is a standard design choice for improving system monitoring and operator awareness in medical device technologies
Source Patent Element
Centrifugal separation of whole blood components
PTD Variation
Introducing real-time volume measurement to optimize fluid utilization during separation process
Obviousness Reasoning
Minimizing fluid waste through precise volume tracking represents an obvious optimization strategy for a PHOSITA familiar with medical fluid processing efficiency improvements
Source Patent Element
Single access device fluid transfer mechanism
PTD Variation
Implementing advanced fluid volume sensors to provide more granular monitoring through that access point
Obviousness Reasoning
Enhancing existing access mechanisms with improved sensing technologies is a routine engineering approach to incrementally improving medical device performance
35 U.S.C. § 103 Summary: Based on the teachings of US Patent 11857714 and the disclosed technical variations, a person having ordinary skill in the art would find the claimed innovations of real-time fluid volume monitoring and adaptive control to be obvious extensions of existing biological fluid processing technologies. The incremental improvements represent predictable solutions using known sensor and control techniques within the medical device engineering domain.

Original Patent Information

Patent NumberUS 11,857,714
TitleSystems and methods for monitoring and controlling fluid balance during a biological fluid procedure
Assignee(s)Fenwal, Inc.