Equipment sets for the sequential administration of medical liquids at dual flow rates having parallel secondary liquid flowpaths wherein one said path is controlled by a liquid sequencing valve

• US 4,219,022 A
• Filed: 02/28/1979
• Issued: 08/26/1980
• Est. Priority Date: 02/28/1979
• Status: Expired due to Term

• Current Assignee: Abbott Laboratories Incorporated
• Original Assignee: Abbott Laboratories Incorporated
• Inventors: Genese, Joseph N.
• Primary Examiner(s): Truluck, Dalton L.
• Application Number:
  US06/016,232
• Time in Patent Office: 545 Days
• Field of Search: 128/214 R, 128/214 C, 128/214 G, 128/227, 128/214.2, 128/274, 222/129.2, 222/145, 137/112-114
• US Class Current: 604/81
• CPC Class Codes: A61M 5/1408 in parallel, e.g. manifolds, sequencing valves access sites A61M39/02; tube connectors A61M39/10
• CPC Class Codes: A61M 5/40 using low-level float-valve to cut off media flow from reservoir position detection of a floating member A61M5/1685
• CPC Class Codes: Y10T 137/2569 Control by depletion of source

Abstract

Equipment sets for the sequential administration of medical liquids wherein a primary liquid can be administered at a flow rate independent of the flow rate of a secondary liquid and prevent the inadvertent administration of air when the secondary liquid is depleted. The sets of this invention employ parallel flowpaths for the secondary liquid and a single liquid sequencing valve to control the flow of the primary liquid and the secondary liquid in one of the parallel flowpaths.

Claims

1. A set for the sequential administration of medical liquids to a patient, comprising:

a liquid sequencing valve defined by a housing having a chamber therein, first, second and third pasageways opening into said chamber, and a liquid impermeable valve means normally positioned to close said first passageway to the flow of liquid therethrough, said valve means hydrostatically moveable to a second position to open said first passageway and close said second passageway to the flow of liquid therethrough, and said third passageway open to the flow of liquid therethrough regardless of the position of said valve means,

a primary tube for the flow of a primary medical liquid therethrough having the proximal end in fluid communication with said second passageway,

a first secondary tube for the flow of a secondary medical liquid therethrough having its proximal end in fluid communication with said third passageway,

a common tube having its distal end in fluid communication with the proximal end of said first secondary tube and said third passageway and its proximal end open for the flow of liquid therefrom,

a second secondary tube for the flow of said secondary liquid therethrough having its distal end in fluid communication with said first passageway and its proximal end in fluid communication with said common tube at a site intermediate the ends thereof,

whereby a primary liquid flow path is formed by said primary tube, said second passageway, said chamber, said third passageway and said common tube and a secondary liquid flow path is formed by a first flow path comprising said first secondary tube and said common tube and a second flow path comprising said first secondary tube, said third passageway, said chamber, said first passageway, said second secondary tube and said common tube,

a first flow control means on said common tube distal to said site intermediate the ends thereof for adjusting the flow rate of primary and secondary liquid flowing therethrough, and

a second flow control means in said second flow path for adjusting the flow rate of secondary liquid flowing therethrough,

whereby said secondary liquid flows through said secondary liquid flow path at a rate controlled by said first and second flow control means and said primary liquid flow through said primary liquid flow path at a rate independent of the flow rate of said secondary liquid.

2. The set defined in claim 1, wherein said liquid sequencing valve has a substantially H or X-shaped housing, at least a portion of said first passageway is concentric to and within said third passageway, and said housing has fourth and fifth passageways therethrough each having an opening in fluid communication with said third passageway to said chamber, said proximal end of said first secondary tube being connected directly to said fourth passageway and said distal end of said common tube being connected directly to said fifth passageway.

3. The set defined in claim 2, wherein said fourth passageway is covered at one end thereof by a resealable membrane.

4. The set defined in claim 1, 2, or 3, wherein said first passageway has a minute aperture open to the flow of liquid therethrough regardless of the position of said valve means.

5. The set defined in claim 1, 2 or 3, wherein said valve means is a poppet valve.

6. The set defined in claim 1 or 2, wherein said primary tube has a piercing pin at its distal end.

7. The set defined in claim 6, wherein said secondary tube has a piercing pin at its distal end.

8. The set defined in claim 7, wherein said piercing pin of said primary and secondary tube have drip chambers integral therewith.

9. The set defined in claim 7, wherein said piercing pins of said primary and secondary tube have air vents integral therewith.

15. The set defined in claim 1 or 10 and further including a ball having a density greater than water normally disposed at the bottom of said chamber and below said valve means whenever said housing is in a upright position.

10. A set for the sequential administration of medical liquids to a patient, comprising:

a liquid sequencing valve defined by an H or X-shaped housing having a chamber therein, first, second and third passageways opening into said chamber, at least a portion of said first passageway concentric to and within said third passageway, a liquid impermeable poppet valve normally positioned to close said first passageway and prevent the flow of liquid therethrough, said poppet valve hydrostatically moveable to a second position to open said first passageway and close said second passageway to prevent the flow of liquid therethrough, said third passageway open to the flow of liquid therethrough regardless of the position of said poppet valve, and fourth and fifth passageways through said housing each having an opening in fluid communication with said third passageway to said chamber,

a primary tube for the flow of a primary medical liquid therethrough having its proximal end in fluid communication with said second passageway,

a common tube having its distal end in fluid communication with said fifth passageway and its proximal end open for the flow of liquid therefrom,

a secondary tube for the flow of a secondary medical liquid therethrough having its distal end in fluid communication with said first passageway and its proximal end in fluid communication with said common tube at a site intermediate the ends thereof, and

said fourth passageway covered at one end by a resealable membrane,

whereby a primary liquid flow path is formed by said primary tube, said second passageway, said chamber, said third and fifth passageways and said common tube and a secondary liquid flow path is formed by a first flow path comprising said fourth and fifth passageways and said common tube and a second flow path comprising said fourth passageway, said third passageway, said chamber, said first passageway, said secondary tube and said common tube;

a first flow control means on said common tube distal to said site intermediate the ends thereof for adjusting the flow rate of primary and secondary liquid flowing therethrough, and

a second flow control means on said secondary tube for adjusting the flow rate of secondary liquid flowing therethrough,

whereby said secondary liquid flows through said secondary liquid flow path at a rate controlled by said first and second flow control means and said primary liquid flows through said primary liquid flow path at a rate independent of the flow rate of said secondary liquid.

11. The set defined in claim 10, wherein said first passageway has a minute aperture open to the flow of liquid therethrough regardless of the position of said valve means.

12. The set defined in claim 10 or 11, wherein said primary tube has a piercing pin at its distal end.

13. The set defined in claim 12, wherein said piercing pin has a drip chamber integral therewith.

14. The set defined in claim 12, wherein said piercing pin has an air vent integral therewith.