Peritoneal dialysis patient connection system using ultraviolet light emitting diodes

• US 8,197,087 B2
• Filed: 07/05/2007
• Issued: 06/12/2012
• Est. Priority Date: 07/05/2007
• Status: Active Grant

• Current Assignee: Baxter Healthcare SA (Baxter International Inc.), Baxter International Inc.
• Original Assignee: Baxter Healthcare SA (Baxter International Inc.), Baxter International Inc.
• Inventors: Sobue, Katsuyoshi, Nakajima, Takeshi, Matsuzaki, Atsushi, Okuda, Minoru
• Primary Examiner(s): CONLEY, SEAN EVERETT
• Application Number:
  US11/773,824
• Publication Number:
  US 20090012459A1
• Time in Patent Office: 1,804 Days
• Field of Search: 422/24, 422/186.3, 422/292, 362/227, 362/249.02, 604/29
• US Class Current: 362/249.02
• CPC Class Codes: A61L 2/10 Ultraviolet radiation
• CPC Class Codes: A61M 1/159 specially adapted for peritoneal dialysis
• CPC Class Codes: A61M 1/28 Peritoneal dialysis ; Other peritoneal treatment, e.g. oxygenation
• CPC Class Codes: A61M 1/285 Catheters therefor
• CPC Class Codes: A61M 2039/167 with energizing means, e.g. light, vibration, electricity
• CPC Class Codes: A61M 2205/12 with interchangeable cassettes forming partially or totally the fluid circuit
• CPC Class Codes: A61M 39/16 having provision for disinfection or sterilisation A61M39/143 takes precedence; methods or apparatus for disinfection or sterilisation A61L2/00
• CPC Class Codes: A61M 39/18 Methods or apparatus for making the connection under sterile conditions, i.e. sterile docking

Abstract

A light applicator for a peritoneal dialysis conduit connection includes a housing having a inner surface; a plurality of ultraviolet (“UV”) light-emitting diodes (“LED'"'"'s”) positioned on the inner surface of the housing; and circuitry connected to the UV-LED'"'"'s such that power can be supplied to energize the UV-LED'"'"'s simultaneously.

Claims

1. A light applicator for a peritoneal dialysis conduit connection comprising:

a housing having a substantially cylindrical inner surface;

a plurality of ultraviolet (“

UV”

) light-emitting diodes (“

LED'"'"'s”

) positioned on the inner surface of the housing and spaced circumferentially about the inner surface, the plurality of UV-LED'"'"'s including at least a first set of UV-LED'"'"'s and a second set of UV-LED'"'"'s; and

circuitry connected to the plurality of UV-LED'"'"'s such that power can be supplied to energize the plurality of UV-LED'"'"'s simultaneously, wherein the plurality of UV-LED'"'"'s provide at least 0.2 Joules of radiant energy in less than one minute via one of;

(i) feedback from a photocell and (ii) sequentially lighting the first set of UV-LED'"'"'s and the second set of UV-LED'"'"'s.

2. The light applicator of claim 1, wherein the inner surface of the housing includes a UV reflective surface.

3. The light applicator of claim 1, wherein the housing is openable and closeable to accept a peritoneal dialysis tubing connector.

4. The light applicator of claim 1, wherein the plurality of UV-LED'"'"'s are positioned in a five-by-five array on the inner surface of the housing.

5. The light applicator of claim 1, wherein the plurality of UV-LED'"'"'s are spaced apart in an array about the inner surface of the housing.

6. The light applicator of claim 1, wherein the plurality of LED'"'"'s comprises an array of about fifty LED'"'"'s.

7. The light applicator of claim 1, wherein at least one of the plurality of UV-LED'"'"'s has at least one characteristic selected from the group consisting of:

(i) having a peak wavelength of about 280 nanometers; and

(ii) a power output of about one milliWatt.

8. The light applicator of claim 1, wherein the housing is at least one of:

(i) less than or equal to 15 mm in inner diameter; and

(ii) less than or equal to 50 mm in length.

9. The light applicator of claim 1, wherein the plurality of UV-LED'"'"'s in combination supply enough energy to provide sufficient germicidal effectiveness to a peritoneal dialysis conduit connection in less than one minute.

10. The light applicator of claim 1, which includes the photocell.

11. A peritoneal dialysis patient assist device comprising:

a body configured to (i) accept a first connector in fluid communication with a patient'"'"'s indwelling catheter and a second connector in fluid communication with a supply of dialysate, (ii) mate the first and second connectors, and (iii) have a substantially cylindrical inner surface; and

a plurality of ultraviolet (“

UV”

) light-emitting diodes (“

LED'"'"'s”

) connected electronically together via trace wires formed on the substantially cylindrical inner surface, the plurality of UV-LED'"'"'s positioned circumferentially about the substantially cylindrical inner surface of the body so as to direct radiant energy towards the mating of the first and second connectors wherein each LED is configured to emit radiation in a range from about 254 nanometers to about 280 nanometers with a power output of at least 1 milliJoule/sec.

12. The peritoneal dialysis patient assist device of claim 11, which includes a housing enclosing the body, the housing having an inner surface, the UV-LED'"'"'s positioned on the inner surface.

13. The peritoneal dialysis patient assist device of claim 12, wherein the housing includes at least one of:

(i) an apparatus enabling the housing to open and close to receive the body; and

(ii) a UV light reflecting inner surface.

14. The peritoneal dialysis patient assist device of claim 11, which includes circuitry connected to the UV-LED'"'"'s such that power can be supplied to energize the UV-LED'"'"'s (i) simultaneously, (ii) sequentially or (iii) simultaneously and sequentially.

15. The peritoneal dialysis patient assist device of claim 11, wherein the body is made of a UV light-transmissive material.

16. The peritoneal dialysis patient assist device of claim 11, wherein the body is configured to translate the first and second connectors to mate and disconnect the connectors.

17. The peritoneal dialysis patient assist device of claim 11, wherein the body further includes a photocell configured to measure the radiant energy output to the plurality of UV-LED'"'"'s.