Analyte Sensor Wire for Peritoneal Dialysis Catheter

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Solution Overview

Problem

Current dialysis methods, such as hemodialysis and peritoneal dialysis, are limited by their invasive procedures and lack of real-time monitoring capabilities, which restrict patient autonomy and understanding of peritoneal membrane function, leading to suboptimal treatment and quality of life for patients with renal dysfunction.

Innovation Solution

A device that can be connected to or inserted through a peritoneal dialysis catheter, featuring a sensor wire with an analyte sensor for real-time sensing and analysis, allowing concurrent dialysis and providing data for adjusting dialysis protocols based on analyte levels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a sensor wire is inserted through the peritoneal catheter for real-time analyte measurement, then real-time monitoring capability is improved, but the risk of contamination and loss of sterility in the dialysis circuit increases

Engineering Contradiction:
Improvereal-time analyte measurement capabilityVSAvoidsterility of dialysis circuit
Core Design Contradiction:
Measurement precisionVSReliability

Solution Approach 1:

The device divides the catheter system into separate functional modules: the existing peritoneal catheter for fluid delivery and a separate sensor wire for analyte measurement. This segmentation allows the sensor to be introduced through the catheter lumen without compromising the sterility of the main dialysis circuit, as the sensor can be sterilized independently and inserted through the sterile barrier already provided by the catheter.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The peritoneal catheter itself serves as an intermediary sterile barrier through which the sensor wire is introduced. The catheter's existing sterile seal and connection mechanisms act as a mediator that allows the sensor to access the peritoneal cavity for real-time monitoring while maintaining the sterility of the dialysis fluid circuit.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If peritoneal dialysis treatment is performed with traditional methods, then treatment simplicity is maintained, but patient autonomy and quality of life are reduced due to lack of real-time monitoring

Engineering Contradiction:
Improvetreatment simplicityVSAvoidpatient autonomy and treatment personalization
Core Design Contradiction:
Ease of operationVSAdaptability or versatility

Solution Approach 1:

The sensor wire provides real-time feedback on analyte levels (such as glucose, creatinine, and other metabolites) in the peritoneal cavity. This feedback enables dynamic adjustment of dialysis treatment parameters and allows patients to monitor their own condition, thereby increasing patient autonomy and enabling personalized treatment protocols without complicating the overall treatment process.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

Patients can independently monitor their own analyte levels through the sensor wire and use this information to make informed decisions about their treatment. The system empowers patients to self-manage their dialysis therapy by providing them with real-time data about their physiological state, increasing their autonomy while maintaining treatment simplicity.

Inventive Principle:
Principle #25Self-service

3Stability of the object's composition

If the peritoneal membrane is considered as a fixed membrane based on traditional PET testing, then treatment protocol stability is maintained, but the ability to study and modify membrane function is lost

Engineering Contradiction:
Improvemembrane function stabilityVSAvoidability to study and modify membrane function
Core Design Contradiction:
Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The sensor wire enables continuous real-time monitoring of analyte levels in the peritoneal cavity, providing an ongoing record of membrane function rather than discrete snapshots from PET testing. This continuous data stream allows researchers to study membrane characteristics dynamically and assess how pharmacological agents or other interventions modify membrane function over time, transforming the membrane from a static to a dynamically studyable system.

Inventive Principle:
Principle #20Continuity of useful action

Solution Approach 2:

The system transitions from static, periodic assessment of membrane function (PET testing) to dynamic, real-time monitoring. The sensor wire captures temporal variations in analyte levels that reflect membrane function changes, enabling the study of membrane dynamics and the evaluation of interventions that aim to modify membrane characteristics.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS10485457B2Device connectable to a dialysis catheter for in situ analysis
Publication Date: 2019.11.26 NAT GUARD HEALTH AFFAIRS
  • US10485457B2 patent drawing
  • US10485457B2 patent drawing
  • US10485457B2 patent drawing

AI summary

The present invention relates to a device configured with an analyte sensor to measure analytes through an existing peritoneal dialysis catheter and to a method for using the device and to a method for changing of a dialysis protocol in a patient undergoing peritoneal dialysis using the device.