Short-tubing set gravity powered peritoneal cycler

• US 4,413,988 A
• Filed: 04/28/1982
• Issued: 11/08/1983
• Est. Priority Date: 04/28/1982
• Status: Expired due to Fees

• Current Assignee: Alan E. Handt, Stephen R. Ash
• Original Assignee: Alan E. Handt, Stephen R. Ash
• Inventors: Ash, Stephen R., Handt, Alan E.
• Primary Examiner(s): Rosenbaum, C. Fred
• Assistant Examiner(s): Lester, Michelle N.
• Application Number:
  US06/372,457
• Time in Patent Office: 559 Days
• Field of Search: 604/27-34, 604/36, 604/131, 604/141, 128/DIG. 12
• US Class Current: 604/29
• CPC Class Codes: A61M 1/28 Peritoneal dialysis ; Other peritoneal treatment, e.g. oxygenation
• CPC Class Codes: A61M 1/281 Instillation other than by gravity
• CPC Class Codes: A61M 1/282 Operational modes

Abstract

A machine for infusion and withdrawal of fluid from the peritoneal cavity of a person. A plurality of bags of fluid each rests atop spaced apart trays arranged in a stack and supported by a vertical secondary frame slidably mounted in a main frame. Moveable pins mounted to the main frame sequentially support the secondary frame and an adjacent tray until the entire secondary frame and stack of trays move downwardly pass the pins. The trays include clamping mechanisms engaged with the tubular ports of each bag to control fluid flow through the port of a particular bag supported by a tray. Pins are fixedly mounted to bars slideably mounted to the main frame and moved either manually or by means of a solenoid to control movement of the trays and secondary frame and thus fluid flow.

Claims

1. A cycling machine for infusion and withdrawal of fluid from a person comprising:

main frame means;

secondary frame means slidably mounted on said main frame means and including a plurality of shelves, a vertical stack of trays each resting atop an associated shelf of said plurality of shelves with said trays being spaced apart, a bag of fluid on each of said trays;

stop means movably mounted on said main frame means initially positioned beneath said stack and releasably engageable with said secondary frame means and also releaseably engageable with the most adjacent tray of said stack to hold said adjacent tray as said secondary frame means and supported trays and bags fall downwardly pressing said associated bag against said adjacent tray squeezing fluid therefrom;

operator means engaged with said stop means and cyclically operable until all of said bags are drained and refilled to first release said stop means from said secondary frame means which falls while said stop means holds said adjacent tray and to next move said stop means apart from said adjacent tray to catch and hold said secondary frame means allowing said adjacent tray to fall back atop said associated shelf decompressing said associated bag to receive gravity inflow of fluid.

2. The machine of claim 1 and further comprising clamping means engageable with each bag and operable to allow fluid flow from a bag on said adjacent tray only when said adjacent tray is held by said stop means.

3. The machine of claim 2 and further comprising additional means engageable with said clamping means to allow fluid flow into said bag on said adjacent tray when said adjacent tray falls from said stop means.

4. The machine of claim 1 wherein:

said secondary frame means includes means fixedly connecting said shelves together, and said main frame means and said secondary frame means include cooperating guide means operable to vertically guide said secondary frame means.

5. The machine of claim 4 wherein:

each shelf and each tray includes pin passages with said passages on each tray non-aligned with said passages on an adjacent shelf;

said stop means includes pins positionable beneath and against each shelf and each tray and alignable by said operator means with said pin passages to allow each shelf and each tray to fall past said pins.

6. The machine of claim 5 wherein:

said operator means includes a pair of control rods slidably mounted on said main frame means and having said pins mounted thereon projecting inwardly beneath said shelves and trays, said control rods are interconnected to slide horizontally in unison.

7. The machine of claim 6 and further comprising:

clamp means including a clamp associated with each tray and engageable with a bag on each tray to control fluid flow therefrom and thereto.

8. The machine of claim 7 wherein:

said clamp means includes first actuator means on said secondary frame means operable to move each clamp to a closed position stopping fluid flow from a bag on each shelf, said clamp means further includes a second actuator on said main frame means operable to hold said clamp on said adjacent tray once beneath said pins in an open position allowing fluid flow into a bag.

9. A short tube set gravity powered peritoneal cycler comprising:

main frame means;

a plurality of bags of fresh fluid;

a plurality of trays each sized to support one of said bags;

vertical frame means slidably mounted in said main frame means and having mounting planes each receiving one of said trays;

a movable holder on said main frame means to alternately hold a particular tray with bag as said vertical frame means weighs downwardly thereon squeezing fresh fluid therefrom and then holding said vertical frame means as said particular tray falls away from said vertical frame means decompressing said bag on said particular tray which receives back waste fluid.

10. The cycler of claim 9 and further comprising clamping means engageable with each bag and operable to control fluid flow therefrom and thereto.

11. The cycler of claim 10 wherein said mounting planes are fixedly connected together supporting said trays.

12. The cycler of claim 10 wherein said holder includes fingers movably mounted to said main frame means releasably engageable alternately with said trays and planes.

13. A short tube set gravity powered peritoneal cycler for operation with full bags of fluid comprising:

main frame means;

a plurality of trays each sized to support a full bag of fluid;

vertical frame means slidably mounted in said main frame means and having mounting planes each receiving one of said trays and spacing said trays apart a distance at least equal to a full bag thickness;

a movable holder on said main frame means to alternately hold a particular tray as said vertical frame means moves downwardly decreasing said distance between said particular tray and the tray thereabove and then holding said vertical frame means as said particular tray falls away from said vertical frame means until said distance is once again attained.

14. The cycler of claim 13 wherein said mounting planes are fixedly connected together supporting said trays.

15. The cycler of claim 13 wherein said holder includes fingers movably mounted to said main frame means releasably engageable alternately with said trays and planes.

16. A cycling machine for controlling flow of fluid between a person and bags of fluid comprising:

main frame means;

secondary frame means slidably mounted to said main frame means;

a plurality of trays mounted on said secondary frame means and each spaced apart at least a distance equal to the thickness of a bag of fluid;

a stop means movably mounted relative to said main frame means and said secondary frame means and initially positioned beneath said trays and releasably enagageable with said secondary frame means and the most adjacent of said trays to hold said adjacent tray as said secondary frame and supported trays fall downwardly depressing any bag on said adjacent tray; and

,

operator means engaged with said stop means and cyclically operable to first release said stop means from said secondary frame means which falls while said stop means holds said adjacent tray and to next move said stop means apart from said adjacent tray allowing said adjacent tray to fall back atop said secondary frame means.