Method of structuring a machine to heat dialysis fluid using radiant energy

• US 7,458,951 B2
• Filed: 12/26/2006
• Issued: 12/02/2008
• Est. Priority Date: 01/17/2002
• Status: Expired due to Fees

• Current Assignee: Baxter Healthcare SA (Baxter International Inc.), Baxter International Inc.
• Original Assignee: Baxter Healthcare SA (Baxter International Inc.), Baxter International Inc.
• Inventors: Lauman, Brian, Parish, John
• Primary Examiner(s): Simons; Kevin C.
• Assistant Examiner(s): Gilbert; Andrew M
• Application Number:
  US11/616,204
• Publication Number:
  US 20070106197A1
• Time in Patent Office: 707 Days
• Field of Search: 604/6.08, 604 28- 29, 604113-114, 607104-106
• US Class Current: 604/6.08
• 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 1/1561 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 1/159 specially adapted for peritoneal dialysis
• CPC Class Codes: A61M 1/1656 Apparatus for preparing dialysates
• CPC Class Codes: A61M 1/166 Heating for sterilisation A61M1/1686
• CPC Class Codes: A61M 1/1668 Details of containers
• CPC Class Codes: A61M 1/1696 with dialysate regeneration
• CPC Class Codes: A61M 1/28 Peritoneal dialysis ; Other peritoneal treatment, e.g. oxygenation
• CPC Class Codes: A61M 1/284 Continuous flow peritoneal dialysis [CFPD]
• CPC Class Codes: A61M 2205/127 with provisions for heating or cooling
• CPC Class Codes: A61M 2205/3653 by Joule effect, i.e. electric resistance
• CPC Class Codes: A61M 2205/368 by electromagnetic radiation, e.g. IR waves
• CPC Class Codes: A61M 2205/3686 microwaves
• CPC Class Codes: A61M 5/44 having means for cooling or heating the devices or media
• CPC Class Codes: F24H 1/121 using electric energy supply
• CPC Class Codes: H05B 3/0085 for medical applications

Abstract

A method of structuring a machine to heat a dialysis fluid includes: (i) allowing flow of the dialysis fluid through a disposable fluid conduit; (ii) directing energy from a 2-dimensional energy source to apply energy to the dialysis fluid in the disposable fluid conduit; and (iii) directing energy from a 3-dimensional energy source to apply energy to the dialysis fluid in the disposable fluid conduit.

Claims

1. A method of structuring a machine to heat a dialysis fluid comprising:

supporting a radiant energy emitter via a housing having an opening;

covering the opening with a radiant energy transmissive material;

disposing a radiant energy reflector opposite the radiant energy emitter such that a disposable dialysis fluid pumping unit when installed is positioned between the radiant energy emitter and the radiant energy reflector;

supporting a resistance heater so that it is adjacent to the disposable dialysis fluid pumping unit when installed; and

wherein the radiant energy emitter, the radiant energy reflector and the resistance heater are supported and disposed such that when the disposable dialysis fluid pumping unit is installed, (i) radiant energy from the radiant energy emitter is directed towards the radiant energy transmissive material to heat the dialysis fluid within the disposable unit to a first temperature, and (ii) heating energy from the resistance heater is directed towards the disposable unit to heat the dialysis fluid to a second temperature.

2. The method of claim 1, the disposable dialysis fluid pumping unit having at least one flexible membrane, and which includes supporting the radiant energy emitter and reflector such that radiant energy can pass through the flexible membrane.

3. The method of claim 1, wherein the radiant energy emitter is an infrared emitter.

4. The method of claim 1, wherein the resistance heater is a plate heater.

5. A method of structuring a machine to heat a dialysis fluid comprising:

supporting a radiant energy emitter via a housing having an opening;

covering the opening with a radiant energy transmissive material;

disposing a radiant energy reflector opposite the radiant energy emitter such that a disposable dialysis fluid pumping unit when installed is positioned between the radiant energy emitter and the radiant energy reflector;

supporting a resistance heater so that it is adjacent to the disposable dialysis fluid pumping unit, when installed; and

wherein the radiant energy emitter, the radiant energy reflector and the resistance heater are supported and disposed such that when the disposable dialysis fluid pumping unit is installed, (i) heating energy from the resistance heater is directed towards the disposable unit to heat the dialysis fluid within the disposable unit to a first temperature, and (ii) radiant energy from the radiant energy emitter is directed towards the radiant energy transmissive material to heat the dialysis fluid to a second temperature.

6. The method of claim 5, the disposable dialysis pumping unit having at least one flexible membrane, and which includes supporting the radiant energy emitter and reflector such that radiant energy can pass through the flexible membrane.

7. The method of claim 5, wherein the radiant energy emitter is an infrared emitter.

8. The method of claim 5, wherein the resistance heater is a plate heater.