Cannulation Time Tracking for Hemodialysis

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Solution Overview

Problem

Current extracorporeal blood treatment methods lack an efficient way to determine the optimal time for puncturing a patient's vessel, leading to potential blood clotting issues and inefficiencies in blood treatment sessions.

Innovation Solution

A medical set and method that include a determining device to calculate and transmit the optimal time point for vessel puncture, considering patient history and blood treatment apparatus readiness, to prevent blood clotting and optimize treatment timing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If vessel puncture is performed without precise time tracking, then the blood treatment can start immediately when apparatus is ready, but blood clotting may occur in cannulas and line sections due to prolonged waiting time

Engineering Contradiction:
Improveprevention of blood clottingVSAvoidwaiting time for treatment
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system performs preliminary actions by determining and communicating the optimal puncture time point before the actual puncture occurs. The blood treatment apparatus calculates when it will be ready for treatment and communicates this timing information to the puncture device, allowing the puncture to be performed at the precise moment when both the patient is prepared and the apparatus is ready, thereby preventing clotting without unnecessary waiting time.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system establishes a feedback loop where the blood treatment apparatus communicates its readiness status and optimal puncture timing back to the puncture device. This feedback mechanism ensures that puncture timing is continuously adjusted based on apparatus availability, preventing both premature puncture (which could lead to clotting) and delayed puncture (which wastes time).

Inventive Principle:
Principle #23Feedback

2Productivity

If vessel puncture timing is not optimized, then the procedure is simple without complex timing systems, but blood treatment sessions are delayed and apparatus utilization is reduced

Engineering Contradiction:
Improveapparatus utilizationVSAvoidtiming determination system
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The blood treatment apparatus performs multiple functions: it not only conducts the blood treatment but also calculates and communicates the optimal puncture timing. This multi-functionality eliminates the need for separate complex timing systems, as the apparatus itself provides the timing determination capability, thereby improving productivity without significantly increasing overall system complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The blood treatment apparatus serves itself by automatically determining when it will be ready for the next treatment and communicating this information proactively. This self-service approach eliminates the need for external scheduling systems or manual timing coordination, allowing the apparatus to optimize its own utilization while keeping the timing determination system relatively simple.

Inventive Principle:
Principle #25Self-service

3Reliability

If puncture is performed too early without coordination, then the apparatus may not be ready causing delays, but waiting too long increases clotting risk in the cannulas

Engineering Contradiction:
Improvesynchronization of puncture and treatment readinessVSAvoidcoordination time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system performs preliminary coordination by having the blood treatment apparatus calculate and communicate its readiness timeline in advance. This allows the puncture to be scheduled at the precise moment when both patient preparation and apparatus availability align, eliminating the need for last-minute coordination adjustments and preventing both premature and delayed puncture scenarios.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS11925742B2Cannulation time tracking
Publication Date: 2024.03.12 FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
  • US11925742B2 patent drawing
  • US11925742B2 patent drawing
  • US11925742B2 patent drawing

AI summary

A device includes a processor and a non-transitory memory having processor-executable instructions stored thereon. The device is usable with a blood treatment apparatus, such as a hemodialysis machine. The processor-executable instructions, when executed by the processor, facilitate: determining a time point with regard to puncturing a vessel of a patient, wherein puncturing the vessel of the patient is related to a blood treatment for the patient using a blood treatment apparatus; determining a time period based on the determined time point; and transmitting data related to the determined time point and/or data related to the determined time period to a receiving device.