System and method for fluid flow management

• US 20030176833A1
• Filed: 05/15/2003
• Published: 09/18/2003
• Est. Priority Date: 07/23/2000
• Status: Abandoned Application

• Current Assignee: Flomed Ltd.
• Original Assignee: Flomed Ltd.
• Inventors: Libermann, Ofer
• Application Number:
  US10/333,606
• Publication Number:
  US 20030176833A1
• Time in Patent Office: Days
• US Class Current: 604/65
• CPC Class Codes: A61M 1/777 Determination of loss or gain of body fluids due to suction-irrigation, e.g. during surgery
• CPC Class Codes: A61M 2205/18 with alarm
• CPC Class Codes: A61M 2205/3306 Optical measuring means
• CPC Class Codes: A61M 2205/3389 Continuous level detection A61M2205/3393 takes precedence
• CPC Class Codes: A61M 2205/3393 by weighing the reservoir
• CPC Class Codes: A61M 2205/50 with microprocessors or computers
• CPC Class Codes: A61M 3/0202 with electronic control means or interfaces
• CPC Class Codes: A61M 3/0216 Pressure
• CPC Class Codes: A61M 3/0241 the liquid being supplied by gravity
• CPC Class Codes: A61M 3/0254 the liquid being pumped by the patient's weight A61M3/0225
• CPC Class Codes: A61M 39/223 Multiway valves
• CPC Class Codes: A61M 39/281 Automatic tube cut-off devices, e.g. squeezing tube on detection of air

Abstract

A system and method for ensuring continuous fluid flow through a main conduit, the system including at least two fluid containers, each having a fluid outlet conduit couplable to the main conduit, an automatic closure device mounted on each fluid outlet conduit, and a controller for automatically sensing emptying of one of said fluid containers and automatically opening an automatic closure device on a full container, in response thereto.

Claims

1. A system for ensuring continuous fluid flow through a main conduit, the system comprising:

at least two fluid containers, each having a fluid outlet conduit couplable to the main conduit;

an automatic closure device coupled to each fluid outlet conduit;

a sensor, coupled to each fluid container, arranged to provide a signal corresponding to a quantity of fluid in each said fluid container; and

a controller coupled to said sensor for receiving a signal corresponding to emptying of one of said fluid containers, automatically closing an automatic closure device coupled to said emptying container, and automatically opening an automatic closure device coupled to a full container, in response thereto.

2. The system according to claim 1, comprising a plurality of fluid containers and a plurality of sensors, one sensor being coupled to each fluid container, said controller being coupled to each of said sensors for receiving signals corresponding to a quantity of fluid in said fluid containers.

3. The system according to claim 1 or 2, comprising a plurality of fluid containers and a single sensor coupled to all of said fluid containers, said controller being coupled to said sensor for receiving signals corresponding to a quantity of fluid in said fluid containers.

4. The system according to any of the preceding claims, wherein said automatic closure device includes an automatic clamping device mounted on each fluid container and coupled between said fluid container and said main conduit, and coupled to said controller.

5. The system according to any of claims 1 to 3, wherein said automatic closure device includes an automatic selector valve coupled between each fluid container and said main conduit, and coupled to said controller.

6. The system according to claim 5, wherein said automatic selector valve is a mechanical valve, and said controller is coupled to a motor which is drivingly coupled to said mechanical valve.

7. The system according to any of the preceding claims, and further comprising at least two sleeves, one mounted around each fluid container for providing increased pressure to the contents of said fluid container.

8. The system according to claim 4, wherein said sensor includes a flow meter mounted in said main conduit for measuring fluid flow therethrough.

9. The system according to claim 4 or 5, wherein said sensor includes a peristaltic pump for measuring fluid flow therethrough.

10. The system according to any of claims 1 to 5, wherein said sensor includes a load meter for measuring weight of said container.

11. The system according to any of the preceding claims, further comprising a heat exchanger for heating fluid flowing through the main conduit.

12. The system according to any of the preceding claims, further comprising a flow limiter coupled to said controller for limiting the flow of fluid through the main conduit.

13. The system according to any of the preceding claims, further comprising a one-way valve for preventing return of fluid from a patient into the system.

14. The system according to any of the preceding claims, further comprising an alarm arranged to provide a warning of absorption of a dangerous quantity of fluid during and after operations.

15. The system according to any of the preceding claims, further comprising:

means for delivering fluid through the main conduit to a site;

means for removing fluid from said site;

means for measuring fluid removed from said site; and

means for comparing fluid delivered to said site with fluid removed from said site.

16. A method for ensuring continuous fluid flow through a main conduit, the method including:

coupling at least two fluid containers to the main conduit, each fluid container having a fluid outlet conduit;

automatically sensing emptying of one of said fluid containers by a sensor coupled to said container;

automatically closing an automatic closure device coupled to said emptying container in response thereto; and

automatically opening an automatic closure device coupled to a full container in response thereto.

17. The method according to claim 16, wherein said automatic closure device includes an automatic clamping device mounted on each fluid container and coupled between said fluid container and said main conduit, and coupled to said controller.

18. The method according to claim 16, wherein said automatic closure device includes an automatic selector valve coupled between each fluid container and said main conduit, and said controller is drivingly coupled to said automatic selector valve.

19. The method according to claim 18, wherein said steps of automatically closing and automatically opening comprise causing said controller to actuate a motor to activate said automatic selector valve.

20. The method according to claim 16, further comprising the step of warming fluid in the main conduit before delivery.

21. The method according to any of claims 16-20, further comprising the step of providing a warning of absorption of a dangerous quantity of fluid during fluid flow supply.

22. The method according to any of claims 16 to 21, further comprising the steps of:

delivering fluid through the fluid conduit to a site;

removing fluid from said site;

measuring said fluid removed from said site; and

comparing said fluid delivered to said site with said fluid removed from said site.

23. The method according to claim 17, wherein the step of automatically sensing includes sensing fluid flow through a flow meter.

24. The method according to claim 17 or 18, wherein the step of automatically sensing includes sensing fluid flow through a peristaltic pump.

25. The method according to any of claims 16 to 22, wherein the step of automatically sensing includes sensing weight of said containers.