Surgical fluid management system

• US 9,907,901 B2
• Filed: 04/04/2016
• Issued: 03/06/2018
• Est. Priority Date: 04/03/2015
• Status: Active Grant

• Current Assignee: Cirrus Technologies, Ltd.
• Original Assignee: Cirrus Technologies, Ltd.
• Inventors: Orczy-Timko, Benedek, Truckai, Csaba
• Primary Examiner(s): ZOLLINGER, NATHAN C
• Application Number:
  US15/090,500
• Publication Number:
  US 20160287779A1
• Time in Patent Office: 701 Days
• Field of Search: 4174772, 417475
• CPC Class Codes: A61B 1/00119 Tubes or pipes in or with an endoscope
• CPC Class Codes: A61B 1/00133 Drive units for endoscopic tools inserted through or with the endoscope
• CPC Class Codes: A61B 1/015 Control of fluid supply or evacuation
• 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 2205/12 with interchangeable cassettes forming partially or totally the fluid circuit
• CPC Class Codes: A61M 2205/3331 Pressure; Flow
• CPC Class Codes: A61M 2205/3393 by weighing the reservoir
• CPC Class Codes: A61M 3/0201 Cassettes therefor
• CPC Class Codes: A61M 3/0202 with electronic control means or interfaces
• CPC Class Codes: A61M 3/0208 before use
• CPC Class Codes: A61M 3/0212 after use
• CPC Class Codes: A61M 3/0216 Pressure
• CPC Class Codes: A61M 3/022 Volume; Flow rate
• CPC Class Codes: A61M 3/0258 by means of electric pumps
• CPC Class Codes: A61M 3/0266 Stands, holders or storage means for irrigation devices containers with storage means for cannula A61M3/0245
• CPC Class Codes: A61M 3/0283 with at least two inner passageways, a first one for irrigating and a second for evacuating suction-irrigation systems A61M1/77; aspiration tips with fluid supply means A61M1/85; for negative pressure wound therapy A61M1/92
• CPC Class Codes: F04B 43/0081 systems, control, safety measures
• CPC Class Codes: F04B 43/086 with two or more tubular flexible members in parallel F04B43/1136 takes precedence
• CPC Class Codes: F04B 43/1261 the rollers being placed at the outside of the tubular flexible member
• CPC Class Codes: F04B 43/1292 : Pumps specially adapted for several tubular flexible members
• CPC Class Codes: F04B 53/16 : Casings; Cylinders; Cylinder liners or heads; Fluid connections
• CPC Class Codes: G01G 19/16 : having fluid weight-sensitive devices

Abstract

A fluid management system includes a disposable cassette carrying inflow and outflow tubing sections that are configured for releasably mating with a console including a control unit and a pair of roller pump heads. The console may automatically identify the disposable cassette and weigh the fluid in an inflow source. During operation, the system can monitor pressure in the working space, and provide for inflow and outflow control to maintain any desired operating parameters.

Claims

1. A method for mounting a tube set on a rotor pump console, said method comprising:

providing a tubing cassette having a housing enclosing first and second flexible tubes, wherein each flexible tube includes a loop portion within an interior of the housing and a pair of legs and wherein all legs extend in one direction from one side of the cassette housing;

providing a rotor pump console having an enclosure with a surface, a first peristaltic pump rotor on the surface, and a second peristaltic pump rotor on the surface, wherein the first peristaltic pump rotor and the second peristaltic pump rotor are configured to engage the loop portions of the first and second flexible tubes, respectively, when the tubing cassette is mounted on the rotor pump console enclosure; and

mounting the tubing cassette on the surface of the enclosure of the rotor pump console so that the loop portion of the first flexible tube engages the first peristaltic pump rotor and the loop portion of the second flexible tube engages the second peristaltic pump rotor;

wherein the loop portions of the first and second flexible tubes are disposed in a loop plane parallel to a central plane of the cassette, wherein both pairs of legs of the first and second flexible tubes are disposed in a leg plane parallel to the central plane, and wherein the loop plane and the leg plane are offset from each other in a direction normal to the central plane.

2. A method as in claim 1, further comprising detachably locking the console enclosure into engagement with the cassette housing when the tubing cassette is mounted on the surface of the rotor pump console enclosure.

3. A method as in claim 2, wherein detachably locking includes engaging an alignment component on the console enclosure with an alignment element on the cassette housing to align the first and second flexible rotors with the first and second tubes as the cassette is mounted on the console.

4. A method as in claim 3, wherein the alignment element on the cassette housing comprises a slot and the alignment component on the console enclosure comprises a post and wherein locking includes inserting the post into the slot.

6. A method as in claim 1, further comprising sensing a condition of a fluid within the first and second flexible tubes after the first and second flexible tubes have been mounted on the console.

7. A method as in claim 6, wherein sensing includes aligning a sensing window on at least one of the first and second flexible tubes of the cassette when the cassette is mounted on the rotor pump console.

8. A method as in claim 7, wherein sensing comprises sensing pressure with a pressure sensor and the sensing window comprises a pressure-sensing window including a pressure-responsive region formed in a wall of the at least one of the first and second flexible tubes, wherein the pressure-responsive region is positioned to lie proximate a pressure sensor when the cassette is mounted on the console.

9. A method as in claim 1, further comprising forming an electrical contact between an electrical contact array on the cassette and an electrical contact array on the console as the cassette is mounted on the console.

10. A method as in claim 9, wherein the electrical contact array on the cassette includes cassette identification information which allows the console to recognize the cassette when the cassette is mounted on the console.

11. A method as in claim 1, further comprising hanging a fluid bag on an elongate pole coupled to the console and weighing the contents of fluid within the bag with a load sensor.

5. A method as in 2, wherein detachably locking further includes powering a cam on the console enclosure to engage a cam follower structure on the housing of the cassette to automatically lock the cassette in place as the cassette is mounted on the console.

12. A method for mounting a tube set on a rotor pump console, said method comprising:

providing a tubing cassette having a housing enclosing first and second flexible tubes, wherein each flexible tube includes a loop portion within an interior of the housing and a pair of legs and wherein all legs extend in one direction from one side of the cassette housing;

providing a rotor pump console having an enclosure with a surface, a first peristaltic pump rotor on the surface, and a second peristaltic pump rotor on the surface, wherein the first peristaltic pump rotor and the second peristaltic pump rotor are configured to engage the loop portions of the first and second flexible tubes, respectively, when the tubing cassette is mounted on the rotor pump console enclosure; and

mounting the tubing cassette on the surface of the enclosure of the rotor pump console so that the loop portion of the first flexible tube engages the first peristaltic pump rotor and the loop portion of the second flexible tube engages the second peristaltic pump rotor;

wherein the loop portions of the first and second flexible tubes are nested one inside the other within a common plane with the legs of each of the first and second flexible tubes.

13. A method as in claim 12, further comprising detachably locking the console enclosure into engagement with the cassette housing when the tubing cassette is mounted on the surface of the rotor pump console enclosure.

14. A method as in claim 13, wherein detachably locking includes engaging an alignment component on the console enclosure with an alignment element on the cassette housing to align the first and second flexible rotors with the first and second tubes as the cassette is mounted on the console.

15. A method as in claim 14, wherein the alignment element on the cassette housing comprises a slot and the alignment component on the console enclosure comprises a post and wherein locking includes inserting the post into the slot.

16. A method as in claim 13, wherein detachably locking further includes powering a cam on the console enclosure to engage a cam follower structure on the housing of the cassette to automatically lock the cassette in place as the cassette is mounted on the console.

17. A method as in claim 12, further comprising sensing a condition of a fluid within the first and second flexible tubes after the first and second flexible tubes have been mounted on the console.

18. A method as in claim 17, wherein sensing includes aligning a sensing window on at least one of the first and second flexible tubes of the cassette when the cassette is mounted on the rotor pump console.

19. A method as in claim 18, wherein sensing comprises sensing pressure with a pressure sensor and the sensing window comprises a pressure-sensing window including a pressure-responsive region formed in a wall of the at least one of the first and second flexible tubes, wherein the pressure-responsive region is positioned to lie proximate a pressure sensor when the cassette is mounted on the console.

20. A method as in claim 12, further comprising forming an electrical contact between an electrical contact array on the cassette and an electrical contact array on the console as the cassette is mounted on the console.

21. A method as in claim 20, wherein the electrical contact array on the cassette includes cassette identification information which allows the console to recognize the cassette when the cassette is mounted on the console.

22. A method as in claim 12, further comprising hanging a fluid bag on an elongate pole coupled to the console and weighing the contents of fluid within the bag with a load sensor.