WAVEGUIDE FOR A RADIO FREQUENCY DOOR

• US 20100154325A1
• Filed: 09/23/2009
• Published: 06/24/2010
• Est. Priority Date: 12/18/2008
• Status: Active Grant

• Current Assignee: PDC Facilities, Inc.
• Original Assignee: PDC Facilities, Inc.
• Inventors: Boesel, Matthew, Molstad, Dean, Zwicke, Steve, Maslowski, James P.
• Granted Patent: US 8,087,203 B2
• Time in Patent Office: Days
• US Class Current: 52/173.100
• CPC Class Codes: H02G 3/088 Dustproof, splashproof, drip-proof, waterproof, or flameproof casings or inlets
• CPC Class Codes: H05K 9/0018 with provisions to reduce aperture leakages in walls, e.g. terminals, connectors, cables

Abstract

A waveguide for a radio frequency door like that used in a medical imaging room allows intravenous lines and electrical conduits to be inserted through the door frame without being disconnected from the patient. The waveguide includes a door frame section, and a removable, telescoping or pivoting movable member that cooperates with the door frame section to retain the conduits. The movable member is positioned away from the door frame section during insertion and removal of the conduits from the door frame section, and is positioned adjacent the door frame section when the conduits are being retained. The dimensions and materials of the waveguide are selected to achieve attenuation of electromagnetic interference.

Claims

1. A waveguide for a medical imaging room, comprising:

a door frame section; and

a movable member configured to be disposed in a first position in which the movable member cooperates with the door frame section to retain a conduit, and the movable member also configured to be disposed in a second position sufficiently spaced from the door frame section so that the conduit may be at least one of placed adjacent to the door frame section and removed from the waveguide.

2. The waveguide of claim 1, wherein the movable member is made from a metal alloy.

3. The waveguide of claim 1, wherein at least one of the door frame section and the movable member has a conduit retainer configured to receive the conduit.

4. The waveguide of claim 3, wherein the conduit retainer includes a recess.

5. The waveguide of claim 3, wherein the conduit retainer has a length that is at least 3 times greater than a depth of the conduit retainer.

6. The waveguide of claim 3, wherein the conduit retainer has a length that is at least 4 times greater than a depth of the conduit retainer.

7. The waveguide of claim 3, wherein the conduit retainer is made from a metal alloy, and is configured to attenuate the passage of radio frequencies in the range of 0 to 150 Megahertz.

8. The waveguide of claim 3, wherein the conduit retainer is made from a metal alloy, and is configured to attenuate the passage of radio frequencies in the range of 0 to 750 Megahertz.

9. The waveguide of claim 1, wherein each of the door frame section and the movable member has a respective recess, and wherein the recess of the door frame section is positioned in opposition to the recess of the movable member to create a conduit retainer configured to retain the conduit.

10. The waveguide of claim 1, further comprising:

a first recess in one of the door frame section and the movable member to create a first conduit retainer; and

a second recess in one of the door frame section and the movable member to create a second conduit retainer.

11. The waveguide of claim 10, wherein each of the first conduit retainer and the second conduit retainer has a respective length and a respective depth, and wherein the length of each of the conduit retainers is at least 4 times greater than its respective depth.

12. The waveguide of claim 10, wherein each of the first and second conduit retainers is configured to attenuate the passage of radio frequencies in the range of 0 to 150 Megahertz.

13. The waveguide of claim 1, further comprising:

a first recess in the door frame section;

a second recess in the movable member disposed in opposition to the first recess such that the first and second recesses create a first conduit retainer configured to retain the first conduit.

a third recess in the door frame section; and

a fourth recess in the movable member disposed in opposition to the third recess such that the third and fourth recesses create a second conduit retainer configured to retain the second conduit.

14. The waveguide of claim 1, further comprising:

a first recess in the door frame section configured to receive a first conduit; and

a second recess in the door frame section, disposed below the first recess, and configured to receive a second conduit.

15. The waveguide of claim 14, further comprising:

a first slot adjacent said first recess and configured to receive the first movable member;

a second movable member; and

a second slot adjacent said second recess and configured to receive the second movable member.

16. The waveguide of claim 15, further comprising:

a pivot pin coupled to the door frame section;

a first aperture in the first movable member configured to receive the pivot pin; and

a second aperture in the second movable member configured to receive the pivot pin.

17. The waveguide of claim 1, further comprising:

a connector configured to connect the door frame section to the movable member.

18. The waveguide of claim 17, wherein the connector includes a sliding mechanism.

19. The waveguide of claim 17, wherein the connector includes a telescoping member configured to alternately retract into and extend from the door frame section.

20. The waveguide of claim 17, wherein the connector includes first and second telescoping members configured to alternately retract into and extend from the door frame section, the second telescoping member spaced from the first telescoping member.

21. The waveguide of claim 17, wherein the connector includes a pivot pin coupled to the door frame section and an aperture in the movable member configured to receive the pivot pin.

22. The waveguide of claim 21, further comprising:

a second movable member, disposed below the first movable member, having a second aperture configured to receive the pivot pin.

23. The waveguide of claim 1, wherein the door frame section further comprises a strike plate.

24. The waveguide of claim 1, further comprising:

a slot in the door frame section configured to receive the movable member.