Device for sterilization of a hose coupling device in the connected condition

• US 4,774,415 A
• Filed: 01/20/1987
• Issued: 09/27/1988
• Est. Priority Date: 01/23/1986
• Status: Expired due to Fees

• Current Assignee: Fresenius AG FED REP of Germany
• Original Assignee: Fresenius AG (Fresenius SE & Co. KGaA)
• Inventors: Mathieu, Bernd, Meisberger, Arthur, Biegel, Hubert, Mathiew, Bernd, Weber, Wolfram
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): Guss, Paul A.
• Application Number:
  US07/004,502
• Time in Patent Office: 616 Days
• Field of Search: 250/492.1, 250/432 R, 250/504 R, 250/495.1, 250/428, 250/429, 250/455.1, 374/121, 374/130, 374/126
• US Class Current: 250/455.11
• CPC Class Codes: A61L 2/08 Radiation
• CPC Class Codes: A61M 39/18 Methods or apparatus for making the connection under sterile conditions, i.e. sterile docking

Abstract

The device in accordance with the invention for the sterilization of a hose coupling device (in its connected condition) of dialysis apparatus, comprises an opening housing into which the coupling device is placed. The coupling device is subjected to infrared radiation from heating elements in the housing whose heating effect is monitored and automatically controlled by a temperature probe arranged under the coupling device in the housing. Since the temperature probe is designed to have such an infrared absorption characteristic that the temperature increase rate of the probe is substantially the same as that of the coupling device, one may be certain that the coupling device will have reached the desired temperature (which is detected at the temperature probe) with only a slight delay if any. At the same time there is the advantage that the interior of the coupling device is heated to substantially above the minimum necessary sterilization temperature.

Claims

1. A device for the sterilization of a hose coupling device having two coupling halves in the connected condition thereof, comprising:

a housing that is able to be opened and defining an interior space therein,

at least two infrared radiation sources located in said interior space,

a holding means for mounting the coupling device in the interior of the housing,

a temperature probe positioned in the interior of the housing, and

an automatic controller connected with the temperature probe and including means to set the temperature in the interior of the housing at a given value,

said temperature probe having a reflective surface for reflecting infrared radiation and being heated substantially only by a convection air current.

2. The device as claimed in claim 1 wherein said infrared radiation sources comprise halogen lamps.

3. The device as claimed in claim 1 wherein said temperature probe further comprises a reflective surface for reflecting at least 75% of infrared radiation incident upon it.

4. The device as claimed in claim 1 wherein said temperature probe further comprises a reflective surface for reflecting at least 86% of infrared radiation incident upon it.

5. The device as claimed in claim 1 wherein said temperature probe includes a metallic layer adapted to reflect infrared radiation.

6. The device as claimed in claim 1 wherein said housing has an inner wall surface defining said cavity, the inner wall surface being adapted to reflect infrared radiation.

7. The device as claimed in claim 1 wherein said housing has a metal-coated inner wall surface defining said cavity for reflecting infrared radiation.

8. A device for the sterilization of a closed hose coupling which is disposed within the interior of an openable housing, the device comprising:

at least two infrared radiation sources located in said housing interior,

a holding means for mounting said hose coupling in said interior of said housing,

a temperature probe positioned in said interior of said housing below said hose coupling, and

a control means connected to said temperature probe for adjusting the temperature in the interior of said housing to a predetermined temperature,

said temperature probe having a highly reflective outer surface for reflecting infrared radiation away from the probe without entering the probe, whereby the probe is heated essentially only by the convection of heated air.

9. A device according to claim 8 wherein said infrared radiation sources comprise halogen lamps.

10. A device according to claim 8 wherein said temperature probe reflective surface comprises a metal coating on the temperature probe.