Prepackaged, self-contained fluid circuit module

• US 4,379,452 A
• Filed: 12/06/1979
• Issued: 04/12/1983
• Est. Priority Date: 10/18/1977
• Status: Expired due to Term

• Current Assignee: Baxter Travenol Laboratories Incorporated
• Original Assignee: Baxter Travenol Laboratories Incorporated
• Inventors: DeVries, James H.
• Primary Examiner(s): Thaler, Michael H.
• Assistant Examiner(s): SHEDD, CHARLES W
• Application Number:
  US06/100,975
• Time in Patent Office: 1,223 Days
• Field of Search: 128/214 B, 128/214 F, 128/400, 128/218 D, 128/218 DA, 128/214 E, 128/214 R, 128/214 D
• US Class Current: 604/6.11
• CPC Class Codes: A61M 1/0209 Multiple bag systems for separating or storing blood components
• CPC Class Codes: A61M 1/36224 with sensing means or components thereof
• CPC Class Codes: A61M 1/36225 with blood pumping means or components thereof
• CPC Class Codes: A61M 1/362261 at least one cassette surface or portion thereof being flexible, e.g. the cassette having a rigid base portion with preformed channels and being covered with a foil
• CPC Class Codes: A61M 1/362262 Details of incorporated reservoirs
• CPC Class Codes: A61M 1/362264 the filter being a blood filter
• CPC Class Codes: A61M 1/362265 Details of valves
• CPC Class Codes: A61M 1/362266 Means for adding solutions or substances to the blood
• CPC Class Codes: A61M 1/3639 Blood pressure control, pressure transducers specially adapted therefor
• CPC Class Codes: A61M 1/3693 using separation based on different densities of components, e.g. centrifuging
• CPC Class Codes: A61M 1/3696 with means for adding or withdrawing liquid substances during the centrifugation, e.g. continuous centrifugation
• CPC Class Codes: A61M 2205/12 with interchangeable cassettes forming partially or totally the fluid circuit
• CPC Class Codes: A61M 2205/125 with incorporated filters
• CPC Class Codes: A61M 2205/331 used as turbidity change detectors, e.g. for priming-blood or plasma-hemoglubine-interface detection

Abstract

A prepackaged, self-contained fluid circuit module is selectively movable by an operator into and out of operative association with one or more pump rotors. The module includes a housing which supports two or more flexible conduits, which together define a prearranged fluid circuit. Portions of the flexible fluid conduits are outwardly disposed from the housing in upright, freestanding positions, even when the module is out of operative association with the pump rotors. The upright portions are purposely arranged relative to each other to facilitate only a particular operative relationship between the fluid circuit and the pump rotors when the module is subsequently moved into operative association therewith.

Claims

1. A prepackaged, self-contained fluid circuit module selectively movable by an operator into and out of operative association with a pump rotor, said module comprising

flexible first conduit means and flexible first auxiliary conduit means each defining a fluid pathway adapted for communication with a source of fluid, and

housing means having sidewalls peripherally defining a hollow interior and including means on said sidewalls for supporting a portion of each of said conduit means within the confines of said hollow interior and for supporting another portion of each of said conduit means, when said module is out of operative association with the pump rotor, in a predetermined arcuate configuration outwardly bowed from one of said sidewalls and resiliently biased toward an upright freestanding position generally perpendicular to said one sidewall with said outwardly bowed portion of one of said conduit means concentrically positioned closely adjacent to said outwardly bowed portion of the other of said conduit means to accommodate simultaneous operative contact with the pump rotor when said module is moved into operative association therewith.

2. A prepackaged, self-contained fluid circuit module according to claim 1

and further including a first fluid receiving receptacle,

wherein said first conduit means includes an outlet portion extending outwardly of said hollow interior downstream of said associated outwardly bowed portion and integrally joined in flow communication with said first fluid receiving receptacle, and

wherein said first fluid receiving receptacle forms an integral part of said module.

3. A prepackaged, self-contained fluid circuit module according to claim 2

and further including second fluid conduit means defining a fluid pathway communicating with said fluid receiving receptacle for conducting fluid therefrom, and

wherein said support means is operative for supporting a portion of said second conduit means within the confines of said hollow interior and for supporting another portion of said second conduit means, when said module is out of operative association with the pump rotor, in a predetermined arcuate configuration extending through and outwardly bowed from said one sidewall and resiliently biased toward an upright freestanding position generally perpendicular to said one sidewall and spaced in a noncontiguous relationship from said outwardly bowed portions of said first conduit means and first auxiliary conduit means to accommodate, when said module is moved into operative association with the one pump rotor, contact with another pump rotor spaced from the one pump rotor.

6. A prepackaged, self-contained fluid conduit module according to claim 1 or 4 or 5

wherein said support means includes means on said one sidewall defining a pair of adjacently spaced apertures associated with each of said conduit means and through which said other portion of said associated conduit means extends to resiliently bend said flexible conduit means and form an upright loop defining said resiliently biased outwardly bowed portion.

7. A prepackaged, self-contained fluid circuit module according to claim 1 or 5

wherein said first conduit means and said first auxiliary conduit means are joined to open communication between said respective fluid pathways.

8. A prepackaged, self-contained fluid circuit module according to claim 7

wherein said junction of said first auxiliary conduit means and said first conduit means is located upstream of said outwardly bowed portion of said first conduit means and downstream of said outwardly bowed portion of said first auxiliary conduit means.

9. A prepackaged, self-contained fluid circuit module according to claim 1 or 5

and further including a first sealed container of fluid,

wherein said first auxiliary conduit means includes an inlet portion extending outwardly of said hollow interior upstream of said associated outwardly bowed portion and integrally joined in flow communication with said first sealed container, and

wherein said first sealed container comprises the source of fluid for said first auxiliary conduit means and forms an integral part of said module.

10. A prepackaged, self-contained fluid circuit module according to claim 1 or 5

and further including flexible second auxiliary conduit means defining a fluid pathway adapted for communication with a source of fluid and communicating with said first conduit means upstream of said outwardly bowed portion thereof.

11. A prepackaged, self-contained fluid circuit module according to claim 10

and further including a second sealed container of fluid,

wherein said second auxiliary conduit means includes an inlet portion integrally joined in flow communication with said second sealed container, and

wherein said second sealed container comprises the source of fluid for said second auxiliary conduit means and forms an integral part of said module.

12. A prepackaged, self-contained fluid circuit module according to claim 1 or 5

wherein the cross-sectional area of the interior of said first conduit means differs from the cross-sectional area of the interior of said first auxiliary conduit means.

4. A prepackaged, self-contained fluid circuit module selectively movable by an operator into and out of operative association with spaced pump rotors, said module comprising

flexible first and second conduit means each defining a fluid pathway adapted for communication with a source of fluid, and

housing means having sidewalls peripherally defining a hollow interior and including means on said sidewalls for supporting a portion of each of said conduit means within the confines of said hollow interior and for supporting another portion of each of said conduit means, when said module is out of operative association with the pump rotors, in a predetermined arcuate configuration outwardly bowed from one of said sidewalls and resiliently biased toward an upright freestanding position generally perpendicular to said one sidewall with said outwardly bowed portions of said first and second conduit means positioned in a spaced, noncontiguous relationship along said one sidewall to accommodate separate operative contact with the spaced pump rotors when said module is moved into operative association therewith.

5. A prepackaged, self-contained fluid circuit module according to claim 4

and further including flexible first auxiliary conduit means defining a fluid pathway adapted for communication with a source of fluid, and

wherein said support means is further operative for supporting a portion of said first auxiliary conduit means within the confines of said hollow interior and for supporting another portion of said first auxiliary conduit means, when said module is out of operative association with the pump rotors, in a predetermined arcuate configuration outwardly bowed from said one sidewall and resiliently biased toward an upright freestanding position generally perpendicular to said one sidewall and concentrically positioned adjacent to said outwardly bowed portion of said first conduit means to accommodate simultaneous operative contact with one of the pump rotors when said module is moved into operative association therewith.

13. A prepackaged, self-contained fluid circuit module according to claim 4

and further including a first fluid receiving receptacle,

wherein said first conduit means includes an outlet portion extending outwardly of said hollow interior downstream of said associated outwardly bowed portion and integrally joined in flow communication with said first fluid receiving receptacle, and

wherein said first fluid receiving receptacle forms an integral part of said module.

14. A prepackaged, self-contained fluid circuit module according to claim 13

and further including flexible third conduit means defining a fluid pathway communicating with said first fluid receiving receptacle, and

wherein said support means is further operative for supporting a portion of said third conduit means within the confines of said hollow interior of said housing means.

15. A prepackaged, self-contained fluid circuit module according to claim 14

and further including a chamber defining air bubble trap,

wherein said housing means includes means for supporting said air bubble trap within the confines of said hollow interior, and

wherein said third conduit means is joined in flow communication with said air bubble trap and includes an outlet portion extending from said bubble trap outwardly of said hollow interior.

16. A prepackaged, self-contained fluid circuit module according to claim 15

and further including third auxiliary conduit means defining a fluid path having one end joined in flow communication with said air bubble trap and another end spaced therefrom, and

wherein said support means is operative for supporting said third auxiliary conduit means within the confines of said housing interior with said other end of said third auxiliary conduit means extending outwardly of said one sidewall.

17. A prepackaged, self-contained fluid circuit module according to claim 16

and further including a sealed container of fluid,

wherein said outwardly extending end of said third auxiliary conduit means is integrally joined in flow communication with said sealed container of fluid, and

wherein said sealed container forms an integral part of said module.

18. A prepackaged, self-contained fluid circuit module according to claim 15

and further including a filter supported within said air bubble trap in flow communication with said third conduit means.

19. A prepackaged, self-contained fluid circuit module according to claim 15

wherein said chamber defining said air bubble trap is translucent, and

wherein said housing means includes means forming a window for exposing said translucent chamber to operator view.

20. A prepackaged, self-contained fluid circuit module according to claim 13

and further including a second fluid receiving receptacle,

wherein said second conduit means includes an outlet portion extending outwardly of said hollow interior downstream of said associated outwardly bowed portion and integrally joined in flow communication with said second fluid receiving receptacle, and

wherein said second fluid receiving receptacle forms an integral part of said module.

21. A prepackaged, self-contained fluid circuit module according to claim 20

and further including flexible fourth conduit means defining a fluid pathway communicating with said second fluid receiving receptacle.

22. A prepackaged, self-contained fluid circuit module according to claim 13 or 20 or 21

wherein said second conduit means includes an inlet portion extending outwardly of said hollow interior upstream of said associated outwardly bowed portion and integrally joined in flow communication with said first fluid receiving receptacle, and

wherein said first fluid receiving receptacle comprises the source of fluid for said second conduit means and forms an integral part of said module.

23. A prepackaged, self-contained fluid circuit module according to claim 21

and further including a third fluid receiving receptacle,

wherein said fourth conduit means includes an outlet portion integrally joned in flow communication with said third fluid receiving receptacle, and

wherein said third fluid receiving receptacle forms an integral part of said module.

24. A prepackaged, self-contained fluid circuit module according to claim 23

and further including flexible third conduit means defining a fluid pathway communicating with said first fluid receiving receptacle, and

further including a flexible sleeve commonly enclosing a portion of each of said first, second, third and fourth conduit means adjacent to said respective fluid receiving receptacles, said enclosed portions of said first, second, third and fourth conduit means thereby forming an umbilicus carried outwardly of said housing means.

25. A prepackaged, self-contained fluid circuit module according to claim 24

wherein said umbilicus extends outwardly from said sidewall of said housing means oppositely spaced from said one sidewall.

29. A prepackaged, self-contained fluid circuit module according to claim 21 or 28

and further including flexible second auxiliary conduit means defining a fluid pathway adapted for communication with a source of fluid and communicating with said first conduit means upstream of said outwardly bowed portion thereof.

30. A prepackaged, self-contained fluid circuit module according to claim 29

and further including a second sealed container of fluid,

wherein said second auxiliary conduit means includes an inlet portion integrally joined in flow communication with said second sealed container, and

wherein said second sealed container comprises the source of fluid for said second auxiliary conduit means and forms an integral part of said module.

26. A prepackaged, self-contained fluid circuit module selectively movable by an operator into and out of operative association with spaced pump rotors, said module comprising

first and second fluid receiving receptacles,

flexible first conduit means having an inlet portion adapted for communication with a source of fluid and an outlet portion joined in flow communication with said fluid receiving receptacle,

flexible second conduit means having an inlet portion joined in flow communication with said first fluid receiving receptacle and an outlet portion joined in flow communication with said second fluid receiving receptacle, and

housing means having sidewalls peripherally defining a hollow interior and including means on said sidewalls for supporting a portion of each of said first and second conduit means intermediate said respective inlet and outlet portions thereof within the confines of said hollow interior and for supporting another portion of each of said conduit means, when said module is out of operative association with the pump rotors, intermediate said respective inlet and outlet portions thereof in a predetermined arcuate configuration outwardly bowed from one of said sidewalls and resiliently biased toward an upright freestanding position generally perpendicular to said one sidewall with said outwardly bowed portions of said first and second conduit means positioned in a spaced, noncontinguous relationship along said one sidewall to accommodate separate operative contact with the spaced pump rotors when said module is moved into operative association therewith.

27. A prepackaged, self-contained fluid circuit module according to claim 26

and further including flexible first auxiliary conduit means having an inlet portion adapted for communication with a source of fluid and an outlet portion joined in flow communication with said first conduit means upstream of said outwardly bowed portion thereof, and

wherein said support means is further operative for supporting a portion of said first auxiliary conduit means intermediate said inlet and outlet portions thereof within the confines of said hollow interior with a section of said first auxiliary conduit means upstream of said junction with said first conduit means supported, when said module is out of operative association with the pump rotors, in a predetermined arcuate configuration outwardly bowed from said one sidewall and resiliently biased toward an upright freestanding position generally perpendicular to said outwardly bowed portion of said first conduit means to accommodate simultaneous operative contact with one of the pump rotors when said module is moved into operative association therewith.

28. A prepackaged, self-contained fluid circuit module according to claim 27

and further including a first sealed container of fluid,

wherein said inlet portion of said first auxiliary conduit means is integrally joined in flow communication with said first sealed container, and

wherein said first sealed container comprises the source of fluid for said first auxiliary conduit means and forms an integral part of said module.

31. A prepackaged, self-contained fluid circuit module according to claim 26 or 27

and further including

a third fluid receiving receptacle,

flexible third conduit means having an inlet portion joined in flow communication with said first fluid receiving receptacle and an outlet portion spaced therefrom, and

flexible fourth conduit means having an inlet portion joined with said second fluid receiving receptacle and an outlet portion joined in flow communication with said third fluid receiving receptacle, and

wherein said support means is further operative for supporting a portion of said third conduit means intermediate said inlet and outlet portions thereof within the confines of said hollow interior of said housing means.

32. A prepackaged, self-contained fluid circuit module according to claim 31

and further including a flexible sleeve commonly enclosing a portion of each of said first, second, third and fourth conduit means adjacent to said respective fluid receiving receptacles, said enclosed portions of said first, second, third and fourth conduit means thereby forming an umbilicus carried outwardly of said housing means.