Vented medical fluid tip protector methods

• US 6,929,751 B2
• Filed: 05/24/2002
• Issued: 08/16/2005
• Est. Priority Date: 05/24/2002
• Status: Expired due to Term

• Current Assignee: Baxter Healthcare SA (Baxter International Inc.), Baxter International Inc.
• Original Assignee: Baxter Healthcare SA (Baxter International Inc.), Baxter International Inc.
• Inventors: Bowman, Joseph H. Jr., Busby, Don, Lundtveit, Loren M., Kellam, Ben, Eu, Bruce Ming-Da, Alvaro, Jose
• Primary Examiner(s): KIM, SUN U
• Application Number:
  US10/155,579
• Publication Number:
  US 20030217976A1
• Time in Patent Office: 1,180 Days
• Field of Search: 210/645, 210/646, 210/739, 210/741, 604/28, 604/29, 604/30, 604/118, 604/126, 604/151
• US Class Current: 210/741
• CPC Class Codes: A61M 1/153 the cassette being adapted for heating or cooling the treating fluid, e.g. the dialysate or the treating gas
• CPC Class Codes: A61M 1/155 with treatment-fluid pumping means or components thereof
• CPC Class Codes: A61M 1/1561 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 1/1565 Details of valves
• CPC Class Codes: A61M 1/159 specially adapted for peritoneal dialysis
• CPC Class Codes: A61M 1/166 Heating for sterilisation A61M1/1686
• CPC Class Codes: A61M 1/28 Peritoneal dialysis ; Other peritoneal treatment, e.g. oxygenation
• CPC Class Codes: A61M 1/288 Priming priming in extracorporeal blood circuits A61M1/3643
• CPC Class Codes: A61M 2039/205 comprising air venting means
• CPC Class Codes: A61M 2205/12 with interchangeable cassettes forming partially or totally the fluid circuit
• CPC Class Codes: A61M 2205/3584 using modem, internet or bluetooth
• CPC Class Codes: A61M 2205/50 with microprocessors or computers
• 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 39/10 Tube connectors; Tube couplings A61M39/02 takes precedence; connecting needles to syringes or hubs A61M5/34; connecting catheter tubes to hubs A61M25/0014
• CPC Class Codes: A61M 39/20 Closure caps or plugs for connectors or open ends of tubes

Abstract

A method, system and apparatus for performing peritoneal dialysis are provided. To this end, in part, a member for removably securing a medical fluid tube is provided. The member includes a body providing a first fluid pathway and an opening for removably receiving an end of the medical tube. The first fluid pathway is placed in fluid communication with a second fluid pathway defined by the tube when the end of the tube is removably receiving. The member further includes a filter so positioned and arranged so as to cause fluid flowing through the first fluid pathway to pass through the filter, the filter allowing air but not liquid to flow through the first fluid pathway.

Claims

1. A method of priming medical tubing comprising the steps of:

pumping liquid through the medical tubing, the tubing having an end, and providing a hydrophobic filter at the end, the filter allowing air but not the liquid to escape from the end of the tubing; and

sensing a pressure increase inside the medical tubing and causing the pumping to stop when air has been purged substantially from the tubing.

2. The method of claim 1, which includes the step of pumping the liquid from a dialysate supply bag, through a disposable dialysis unit, and into a patient fluid line.

3. The method of claim 1, which includes the step of pushing the air but not the liquid through the filter.

4. The method of claim 3, wherein the liquid backing up against the filter causes the pressure increase.

5. The method of claim 1, which includes minimizing space in a removable tip protector that houses the filter and secures the tubing to lessen an amount of fluid that escapes due to priming.

6. The method of claim 1, which is implemented in an automated dialysis system.

7. The method of claim 1, wherein the tubing is patient line tubing.

8. The method of claim 1, which includes attaching the filter to the tubing through a process selected from the group consisting of:

sonic scaling and heat sealing.

9. The method of claim 1, which includes attaching the filter to the end of the tubing directly.

10. The method of claim 1, which includes attaching the filter to a connector attached to the tubing.

11. A method of priming medical fluid tubing comprising the steps of:

urging a sequential connection of tubes according to steps of a medical procedure;

pumping liquid through at least one of the tubes and providing a hydrophobic filter allowing air but not the liquid to escape from an end of the tube; and

sensing a pressure increase inside the tube and causing the pumping to stop when air has been purged substantially from the tubing.

12. The method of claim 11, wherein urging the tubing connection includes arranging the tubes in a body according to the steps of the procedure.

13. The method of claim 11, wherein sensing the pressure increase inside the tubing includes sensing when pumped liquid has backed up against the hydrophobic filter.

14. The method of claim 11, which includes urging a patient line to be connected to the patient after stopping the pump when priming is complete.

15. The method of claim 11, which includes sensing whether one of a patient drain procedure and a patient fill procedure needs to be performed once a patient line is connected to the patient.

16. The method of claim 11, wherein the tube having the filter is a patient line tube.

17. A method of priming medical fluid tubing comprising the steps of:

connecting a drain line, supply line and patient line to a body;

urging a person to position the body in a proper orientation;

pumping liquid through at least the patient line and providing a hydrophobic filter allowing air but not the liquid to escape from an end of the patient line; and

sensing a pressure increase inside the patient line and causing the pumping to stop when air has been purged substantially from the patient line.

18. The method of claim 17, wherein positioning the body in a proper orientation includes securing the body to a medical fluid system enclosure.

19. The method of claim 17, wherein connecting the drain, supply and patient lines to the body includes connecting the lines in order of when each line is supposed to be removed from the body for therapy.

20. The method of claim 17, which includes connecting a plurality of supply lines to the body.