Safety interlock

• US 8,154,274 B2
• Filed: 05/11/2010
• Issued: 04/10/2012
• Est. Priority Date: 05/11/2010
• Status: Active Grant

• Current Assignee: Kpr U.S., LLC (Cardinal Health, Inc.)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Wiesner, Joel D., Hudson, Joseph A., Boulanger, Jason
• Primary Examiner(s): Nguyen, Vincent Q
• Application Number:
  US12/777,357
• Publication Number:
  US 20110279107A1
• Time in Patent Office: 700 Days
• Field of Search: 324/72, 324/76.11, 604/131, 604/151
• US Class Current: 324/72
• CPC Class Codes: A61M 2202/0482 Enteral feeding product
• CPC Class Codes: A61M 2205/14 Detection of the presence or absence of a tube, a connector or a container in an apparatus
• CPC Class Codes: A61M 2205/3313 used specific wavelengths
• CPC Class Codes: A61M 2205/6063 Optical identification systems
• CPC Class Codes: A61M 5/14232 Roller pumps
• CPC Class Codes: F04B 43/1215 having no backing plate (deforming of the tube only by rollers)
• CPC Class Codes: F04B 43/1253 by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing

Abstract

A safety interlock for use in a medical device having a control system for controlling operation of the medical device includes a central tubular portion defining a fluid passage for passing fluid through the safety interlock. An outer ring portion is adapted for mounting the safety interlock in the medical device. A spoked connector portion connects the central tubular portion to the outer ring portion so that the outer ring portion is spaced radially outwardly from the central tubular portion in opposed relation with at least a portion of the central tubular portion. The safety interlock is adapted for mounting in the medical device in a path of electromagnetic radiation from a source of electromagnetic radiation such that the central tubular portion reflects the electromagnetic radiation to a electromagnetic radiation detector when properly loaded on the medical device.

Claims

1. A safety interlock for use in a medical device having a control system for controlling operation of the medical device, a source of electromagnetic radiation operatively connected to the control system of the medical device for emitting electromagnetic radiation, and an electromagnetic radiation detector operatively connected to the control system for providing an indication that the safety interlock is properly loaded on the medical device, the safety interlock comprising:

a central tubular portion defining a fluid passage for passing fluid through the safety interlock;

an outer ring portion adapted for mounting the safety interlock in the medical device; and

a spoked connector portion connecting the central tubular portion to the outer ring portion so that the outer ring portion is spaced radially outwardly from the central tubular portion in opposed relation with at least a portion of the central tubular portion;

the safety interlock being adapted for mounting in the medical device in a path of the electromagnetic radiation from the source of electromagnetic radiation such that the central tubular portion reflects the electromagnetic radiation to the electromagnetic radiation detector when properly loaded in the medical device;

wherein the outer ring portion and spoked connector portion are not in the path of the electromagnetic radiation emitted from the source of electromagnetic radiation when the safety interlock is mounted in the medical device.

2. The safety interlock of claim 1 wherein the outer ring portion and spoked connector portion are disposed generally within a common horizontal plane when the safety interlock is mounted in the medical device.

3. The safety interlock of claim 1 wherein the outer ring portion comprises a clear plastic ring and the spoked connector portion comprises clear plastic spokes.

4. The safety interlock of claim 3 wherein the outer ring portion does not inhibit propagation of the electromagnetic radiation from the source of electromagnetic radiation when the safety interlock is mounted in the medical device.

5. The safety interlock of claim 4 wherein the outer ring portion and spoked connector portion are substantially transparent to both infrared radiation and visible light.

6. The safety interlock of claim 1 wherein the source of electromagnetic radiation comprises a first source of electromagnetic radiation, the central tubular portion being adapted to block electromagnetic radiation from a second source of electromagnetic radiation operatively connected to the control system of the medical device from reaching a second electromagnetic radiation detector operatively connected to the control system when the safety interlock is properly loaded in the device.

7. The safety interlock of claim 1 wherein the spoked connector portion comprises a connector ring received around the central tubular portion and spokes extending radially outwardly from the connector ring to the outer ring portion.

8. The safety interlock of claim 1 in combination with the medical device.

9. A safety interlock for use in a medical device having a control system for controlling operation of the medical device, a source of electromagnetic radiation operatively connected to the control system of the medical device for emitting electromagnetic radiation, and an electromagnetic radiation detector operatively connected to the control system for providing an indication that the safety interlock is properly loaded on the medical device, the safety interlock comprising:

a central tubular portion defining a fluid passage for passing fluid through the safety interlock;

an outer ring portion adapted for mounting the safety interlock in the medical device; and

a spoked connector portion connecting the central tubular portion to the outer ring portion so that the outer ring portion is spaced radially outwardly from the central tubular portion in opposed relation with at least a portion of the central tubular portion;

the safety interlock being adapted for mounting in the medical device in a path of the electromagnetic radiation from the source of electromagnetic radiation such that the central tubular portion reflects the electromagnetic radiation to the electromagnetic radiation detector when properly loaded in the medical device;

wherein the outer ring portion comprises a clear plastic ring and the spoked connector portion comprises clear plastic spokes.

10. The safety interlock of claim 9 wherein the outer ring portion and spoked connector portion are disposed generally within a common horizontal plane when the safety interlock is mounted in the medical device.

11. The safety interlock of claim 9 wherein the outer ring portion does not inhibit propagation of the electromagnetic radiation from the source of electromagnetic radiation when the safety interlock is mounted in the medical device.

12. The safety interlock of claim 11 wherein the outer ring portion and spoked connector portion are substantially transparent to both infrared radiation and visible light.

13. The safety interlock of claim 9 wherein the source of electromagnetic radiation comprises a first source of electromagnetic radiation, the central tubular portion being adapted to block electromagnetic radiation from a second source of electromagnetic radiation operatively connected to the control system of the medical device from reaching a second electromagnetic radiation detector operatively connected to the control system when the safety interlock is properly loaded in the device.

14. The safety interlock of claim 9 wherein the spoked connector portion comprises a connector ring received around the central tubular portion and spokes extending radially outwardly from the connector ring to the outer ring portion.

15. The safety interlock of claim 9 in combination with the medical device.

16. A safety interlock for use in a medical device having a control system for controlling operation of the medical device, a source of electromagnetic radiation operatively connected to the control system of the medical device for emitting electromagnetic radiation, and an electromagnetic radiation detector operatively connected to the control system for providing an indication that the safety interlock is properly loaded on the medical device, the safety interlock comprising:

a central tubular portion defining a fluid passage for passing fluid through the safety interlock;

an outer ring portion adapted for mounting the safety interlock in the medical device; and

a spoked connector portion connecting the central tubular portion to the outer ring portion so that the outer ring portion is spaced radially outwardly from the central tubular portion in opposed relation with at least a portion of the central tubular portion;

the safety interlock being adapted for mounting in the medical device in a path of the electromagnetic radiation from the source of electromagnetic radiation such that the central tubular portion reflects the electromagnetic radiation to the electromagnetic radiation detector when properly loaded in the medical device;

wherein the source of electromagnetic radiation comprises a first source of electromagnetic radiation, the central tubular portion being adapted to block electromagnetic radiation from a second source of electromagnetic radiation operatively connected to the control system of the medical device from reaching a second electromagnetic radiation detector operatively connected to the control system when the safety interlock is properly loaded in the device.

17. The safety interlock of claim 16 wherein the outer ring portion and spoked connector portion are disposed generally within a common horizontal plane when the safety interlock is mounted in the medical device.

18. The safety interlock of claim 16 wherein the outer ring portion does not inhibit propagation of the electromagnetic radiation from the source of electromagnetic radiation when the safety interlock is mounted in the medical device.

19. The safety interlock of claim 18 wherein the outer ring portion and spoked connector portion are substantially transparent to both infrared radiation and visible light.

20. The safety interlock of claim 16 wherein the spoked connector portion comprises a connector ring received around the central tubular portion and spokes extending radially outwardly from the connector ring to the outer ring portion.

21. The safety interlock of claim 16 in combination with the medical device.