Means of gravity iv flow sensing via mass change sensor and drop counting device

Patent metadata

Field	Value
Publication number	US-2025073385-A1
Application number	US-202418816730-A
Country	US
Kind code	A1
Filing date	Aug 27, 2024
Priority date	Aug 29, 2023
Publication date	Mar 6, 2025
Grant date	—

Abstract

Infusion control systems are disclosed that can control and monitor medical fluid administration for gravity-based infusion of medical fluid, where the gravity infusion control system is couplable with an intravenous administration set and can include a mass change sensor and drop counter.

First claim

What is claimed is:

1 . A gravity infusion control system comprising:
a drip chamber containing an infusate configured to be fluidly coupled to a patient by IV tubing extending therebetween; a mass change sensor configured to detect any of a change in weight or movement of the infusate in the drip chamber; and a drop detector configured to detect drops of the infusate falling from the drip chamber.

2 . The gravity infusion control system of claim 1 further comprising a user interface that controls a flow rate of the gravity infusion control system.

3 . The gravity infusion control system of claim 1 , wherein the mass change sensor is a load cell or a weight.

4 . The gravity infusion control system of claim 1 , wherein the drip chamber is coupled to the mass change sensor by an arm, a hook, or a clamp.

5 . The gravity infusion control system of claim 1 , wherein an infusate fluid flow is directed through the IV tubing by a pressure of gravity.

6 . The gravity infusion control system of claim 1 , wherein the drop detector is an infrared light emitter and receiver.

7 . The gravity infusion control system of claim 5 , wherein the infusate fluid flow is configured to provide a flow rate about 50 mL/hour, about 100 mL/hour, about 150 mL/hour, about 200 mL/hour, about 250 mL/hour, about 300 mL/hour, about 350 ml/hour, about 400 mL/hour, about 450 mL/hour, or 500 mL/hour.

8 . The gravity infusion control system of claim 5 , wherein the infusate fluid flow is configured to provide a flow rate about 2 mL/hr, about 5 mL/hr, about 10 mL/hr, about 15 ml/hr, about 20 mL/hr, about 25 mL/hr, about 30 mL/hr, about 35 mL/hr, about 40 mL/hr, about 55 mL/hr, or about 5 mL/hr.

9 . The gravity infusion control system of claim 5 , wherein the infusate fluid flow is greater than 500 mL/hr.

10 . The gravity infusion control system of claim 1 further comprising one or more of an air in line detector, a leak detector, an external pressure module, a tamper resistance module, an information and control module, and a connectivity module.

11 . A gravity infusion control system comprising:
an intravenous administration set coupled to a medical fluid reservoir; and a flow sensor coupled to the intravenous administration set, the gravity infusion control system configured such that the flow sensor can detect any change in mass or movement of the medical fluid reservoir.

12 . The gravity infusion control system of claim 11 , wherein the flow sensor comprises a mass change sensor and a drop detector.

13 . The gravity infusion control system of claim 11 , wherein the flow sensor is configured to detect any of a change in weight or movement of the medical fluid reservoir of the intravenous administration set.

14 . The gravity infusion control system of claim 12 , wherein the mass change sensor is a load cell or a weight.

15 . The gravity infusion control system of claim 12 , wherein the drop detector is an infrared light emitter and receiver.

16 . A method for providing a gravity infusion control system comprising:
coupling a medical fluid reservoir of an intravenous administration set to a flow detection interface, wherein the flow detection interface comprises a flow sensor configured to detect any of a change in mass or movement of the medical fluid reservoir; selecting, using a processor, a flow rate through the intravenous administration set, wherein the processor is coupled with the flow detection interface and a flow control interface, such that the processor receives data from the flow sensor to determine the presence of a fluid flow through a tubing of the intravenous administration set.

17 . The method of claim 14 , wherein the flow rate selected is about 50 mL/hour, about 100 mL/hour, about 150 mL/hour, about 200 mL/hour, about 250 mL/hour, about 300 mL/hour, about 350 mL/hour, about 400 mL/hour, about 450 mL/hour, or 500 mL/hour.

18 . The method of claim 14 , wherein the flow rate selected is about 2 mL/hr, about 5 mL/hr, about 10 ml/hr, about 15 mL/hr, about 20 mL/hr, about 25 ml/hr, about 30 mL/hr, about 35 mL/hr, about 40 mL/hr, about 55 mL/hr, or about 5 mL/hr.

19 . The method of claim 14 , wherein the flow rate selected is greater than 500 mL/hr.

20 . The method of claim 14 , wherein the wherein the flow sensor comprises a mass change sensor and a drop detector.

Assignees

• Carefusion 303 Inc

Inventors

• Wine Jason Andrew
• Callahan Ryan
• Shevgoor Siddarth

Classifications

• A61M2205/15

  Detection of leaks · CPC title

• A61M2205/3393

  by weighing the reservoir · CPC title

• A61M2205/3334

  Measuring or controlling the flow rate · CPC title

• A61M2005/16863

  Occlusion detection · CPC title

• A61M5/1411 Primary

  Drip chambers (A61M5/162, A61M5/1689, A61M5/40 take precedence) · CPC title