Fluid management system

• US 9,474,848 B2
• Filed: 03/13/2013
• Issued: 10/25/2016
• Est. Priority Date: 03/09/2009
• Status: Active Grant

• Current Assignee: Stryker Corporation
• Original Assignee: Thermedx, LLC (Stryker Corporation)
• Inventors: Carr, Douglas L, Williams, Jeffrey B
• Primary Examiner(s): BERDICHEVSKY, AARTI
• Application Number:
  US13/798,414
• Publication Number:
  US 20130197471A1
• Time in Patent Office: 1,322 Days
• US Class Current: 1/1
• CPC Class Codes: A61M 1/72 Cassettes forming partially or totally the fluid circuit
• CPC Class Codes: A61M 1/77 Suction-irrigation systems aspiration tips supplying fluids A61M1/85; specific for negative pressure wound therapy A61M1/92; combined with tracheal tubes A61M16/0463
• 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 1/785 by heat
• CPC Class Codes: A61M 2205/123 with incorporated reservoirs
• CPC Class Codes: A61M 2205/127 with provisions for heating or cooling
• CPC Class Codes: A61M 2205/18 with alarm
• CPC Class Codes: A61M 2205/3327 Measuring
• CPC Class Codes: A61M 2205/3334 Measuring or controlling the flow rate
• CPC Class Codes: A61M 2205/3337 Controlling, regulating pressure or flow by means of a valve by-passing a pump
• CPC Class Codes: A61M 2205/3344 Measuring or controlling pressure at the body treatment site
• CPC Class Codes: A61M 2205/3368 Temperature
• CPC Class Codes: A61M 2205/3393 by weighing the reservoir
• CPC Class Codes: A61M 2205/368 by electromagnetic radiation, e.g. IR waves
• CPC Class Codes: A61M 2205/502 User interfaces, e.g. screens or keyboards
• CPC Class Codes: A61M 2205/505 Touch-screens; Virtual keyboard or keypads; Virtual buttons; Soft keys; Mouse touches
• CPC Class Codes: A61M 2205/581 by audible feedback
• CPC Class Codes: A61M 2205/583 by visual feedback
• CPC Class Codes: A61M 2205/7536 allowing gas passage, but preventing liquid passage, e.g. liquophobic, hydrophobic, water-repellent membranes
• CPC Class Codes: A61M 3/0201 Cassettes therefor
• CPC Class Codes: A61M 3/0229 : Devices operating in a closed circuit, i.e. recycling the irrigating fluid
• CPC Class Codes: A61M 3/0258 : by means of electric pumps
• CPC Class Codes: A61M 5/142 : Pressure infusion, e.g. using pumps
• CPC Class Codes: A61M 5/172 : electrical or electronic A61M5/16804, A61M5/16831 take precedence
• CPC Class Codes: A61M 5/36 : with means for eliminating or preventing injection or infusion of air into body dialysis systems, blood oxygenators A61M1/14; haemofiltration equipment A61M1/34; automatic tube cut-off A61M39/281
• CPC Class Codes: A61M 5/365 : Air detectors A61M5/1684 takes precedence; in extracorporeal blood circuits A61M1/3626
• CPC Class Codes: A61M 5/44 : having means for cooling or heating the devices or media
• CPC Class Codes: A61M 5/445 : the media being heated in the reservoir, e.g. warming bloodbags

Abstract

Fluid management system and method of operating a fluid management system which may provide one or more functions associated with suction, irrigation, distention, deficit monitoring, infusion, fluid warming, and the like. The fluid management system may be selectable between pressure control and flow control modes.

Claims

1. A fluid management system for supplying fluids of at least two types, said system comprising:

at least one fluid supply container;

at least one fluid collection container;

a pump configured to deliver a fluid from the at least one fluid supply container to a site, said site being a surgical site or a patient;

a control system for operating the fluid management system in at least one of (1) a pressure control mode, wherein said control system controls the pump to deliver fluid to the site at approximately a target pressure or (2) a flow control mode, wherein said control system controls the pump to deliver fluid to the site at approximately a target flow rate, said control system including;

a user interface for communication between the control system and a user, including inputting data to the control system and outputting data from the control system;

a fluid deficit monitoring function for determining a fluid deficit that is a difference between (i) a volume of fluid delivered to the site from the at least one fluid supply container and (ii) a volume of fluid returned from the site to the at least one fluid collection container; and

a fluid deficit alarm function for activating a fluid deficit alarm when a fluid deficit exceeds a fluid deficit alarm limit indicative of a maximum fluid deficit associated with a type of fluid communicated to the control system.

2. A fluid management system according to claim 1, wherein said control system determines (a) a first fluid deficit associated with a first fluid used during a first medical procedure;

(b) a second fluid deficit associated with a second fluid used during a second medical procedure; and

(c) a total fluid deficit associated with all fluids used during the first, second and any subsequent medical procedures.

3. A fluid management system according to claim 1, wherein said control system further comprises a data recording device for providing a printed summary at the conclusion of a medical procedure, said printed summary identifying the fluid deficit.

4. A fluid management system according to claim 1, wherein said control system further comprises a data recording device for providing a printed summary at the conclusion of a medical procedure, said printed summary identifying said type of fluid communicated to the control system.

5. A fluid management system according to claim 1, wherein said control system provides a deficit alarm limit selection via said user interface for adjustment of said fluid deficit alarm limit within a predetermined range.

6. A fluid management system according to claim 5, wherein said control system further comprises a data recording device for providing a printed summary at the conclusion of a medical procedure, said printed summary identifying the fluid deficit alarm limit indicative of the maximum fluid deficit associated with said type of fluid communicated to the control system.

7. A fluid management system according to claim 1, wherein said control system determines a change from a first medical procedure to a second medical procedure, by communication via the user interface.

8. A fluid management system according to claim 7, wherein said control system determines a change from a first fluid used in the first medical procedure to a second fluid used in the second medical procedure, by communication via the user interface.

9. A fluid management system according to claim 8, wherein in response to communications via the user interface, said control system initiates a purge function that activates the pump to purge fluid from the tubing set.

10. A fluid management system according to claim 9, wherein said control system incorporates the purged fluid into fluid deficit calculations.

11. A fluid management system according to claim 1, wherein said fluid management system further comprises a tubing set that includes:

a proximal portion having a fluid heating cartridge, and

a distal portion having a first end and a second end, the first end connectable to one end of the proximal section.

12. A fluid management system according to claim 11, wherein said distal portion is a first distal portion having a connector at the second end.

13. A fluid management system according to claim 12, wherein said connector is a luer lock connector.

14. A fluid management system according to claim 11, wherein said distal portion is a second distal portion having a surgical instrument at the second end.

15. A fluid management system according to claim 14, wherein said surgical instrument is a trumpet valve.

16. A fluid management system according to claim 11, wherein said control system includes means for detecting characteristics associated with said distal portion to select either the pressure control mode or the flow control mode according to the detected characteristics of the distal portion.

17. A fluid management system according to claim 16, wherein said distal portion includes an electrical communication device for identifying characteristics of the distal portion.

18. A fluid management system according to claim 17, wherein said electrical communication device is a radio frequency identification device (RFID) that includes a memory for storing data identifying characteristics of the distal portion.

19. A method of operating a fluid management system for supplying fluids of at least two types, wherein said system includes at least one fluid supply container, at least one fluid collection container, a pump configured to deliver a fluid from the at least one fluid supply container to a site, said site being a surgical site or a patient;

and a control system for controlling operation of the fluid management system, said method comprising;

inputting data to the control system and outputting data from the control system via a user interface;

selecting a medical procedure that requires (1) a pressure control mode, wherein said control system controls the pump to deliver fluid to the site at approximately a target pressure or (2) a flow control mode, wherein said control system controls the pump to deliver fluid to the site at approximately a target flow rate;

determining a fluid deficit that is a difference between (i) a volume of fluid delivered to the site from the at least one fluid supply container and (ii) a volume of fluid returned from the site to the at least one fluid collection container;

associating a fluid deficit alarm limit with a type of fluid being supplied by the at least one fluid supply container; and

activating a fluid deficit alarm when the fluid deficit exceeds the fluid deficit alarm limit associated with the type of fluid being supplied by the at least one fluid supply container.

20. A method of operating a fluid management system according to claim 19, wherein said fluid management system further comprises a tubing set including a proximal portion having a fluid heating cartridge, and a distal portion having a first end and a second end, the first end connectable to one end of the proximal section, wherein said method further comprises:

detecting characteristics associated with said distal portion to select either the pressure control mode or the flow control mode according to the detected characteristics of the distal portion.

21. A method of operating a fluid management system according to claim 19, wherein said method further comprises:

determining a change from a first fluid used in a first medical procedure to a second fluid used in the second medical procedure, by communication via the user interface.