DATA LOGGER

• US 20090171693A1
• Filed: 10/13/2008
• Published: 07/02/2009
• Est. Priority Date: 12/31/2007
• Status: Active Grant

• Current Assignee: Pedigo Products Incorporated
• Original Assignee: Enthermics Medical Systems, Inc.
• Inventors: Hansen, William J.
• Granted Patent: US 8,775,201 B2
• Time in Patent Office: Days
• US Class Current: 705/2
• CPC Class Codes: A61M 2205/3633 thermally insulated
• CPC Class Codes: A61M 2205/3653 by Joule effect, i.e. electric resistance
• CPC Class Codes: A61M 2205/52 with memories providing a history of measured variating parameters of apparatus or patient
• CPC Class Codes: A61M 2205/6018 providing set-up signals for the apparatus configuration
• CPC Class Codes: A61M 5/44 having means for cooling or heating the devices or media
• CPC Class Codes: A61M 5/445 the media being heated in the reservoir, e.g. warming bloodbags
• CPC Class Codes: G16H 40/63 for local operation
• CPC Class Codes: Y10T 29/49826 Assembling or joining

Abstract

A data logging module and a method of monitoring a medical warming cabinet is disclosed. A temperature of the heating chamber and a state of a door of the heating chamber are sampled at predetermined intervals and recorded as data packets on a memory device. A display may provide a message when the memory device is reaching capacity. Moreover, a selected of the data packets may be analyzed (such as the data packets excluding the data packets when the door is open) for the generation of a report. The data packets from the memory device may be transferred from the memory device to an external memory device as necessary.

Claims

1. A method of monitoring a medical warming cabinet, the medical warming cabinet including a heating chamber heated by a heating apparatus, access to the heating chamber provided through a door into the heating chamber, the method comprising:

sampling a temperature of the heating chamber at predetermined intervals and a state of the door;

recording the temperature, the state of the door, and a time of the sampling in a data packet on a memory device; and

providing a message indicating the memory device is reaching capacity prior to the memory device reaching capacity.

2. The method of claim 1, further comprising:

analyzing a selected plurality of the data packets excluding data packets within a predetermined time after the door indicates the door is open; and

generating a report summarizing the analysis of the selected plurality of the data packets.

3. The method of claim 1, wherein the data packets are stored in a circular memory buffer and, when the memory is full, an oldest of the data packets are overwritten during the step of recording.

4. The method of claim 1, wherein the temperature and the state of the door is sampled at a predetermined rate of one sample per hour.

5. The method of claim 4, wherein the step of sampling further includes sampling a set point for the heating chamber, a warmer type, and an error status.

6. The method of claim 1, further comprising:

transferring the data packets from the memory device to an external memory device.

7. The method of claim 6, wherein the step of transferring the data packets from the memory device to an external memory device includes inserting a removable external memory device into a bus port on the medical warming cabinet.

8. The method of claim 7, wherein the removable external memory device is a USB flash memory drive.

9. The method of claim 7, wherein the transfer of the data packets from the memory device to the external memory device occurs automatically upon insertion of the removable memory device into the bus port.

10. The method of claim 6, wherein the step of transferring the data packets from the memory device to the external memory device further comprises generating a report summary and writing the report summary to the device.

11. A method of monitoring a medical warming cabinet, the medical warming cabinet including a heating chamber heated by a heating apparatus, access to the heating chamber provided through a door into the heating chamber, the method comprising:

sampling a temperature of the heating chamber at predetermined intervals and a state of the door;

recording the temperature, the state of the door, and a time of the sampling in a data packet on a memory device;

analyzing a selected plurality of the data packets excluding data packets within a predetermined time after the door indicates the door is open; and

generating a report summarizing the analysis of the selected plurality of the data packets.

12. A method of claim 11, further comprising providing a message indicating the memory device is reaching capacity prior to the memory device reaching capacity.

13. A data logging module for a controller in a medical warming cabinet, the medical warming cabinet including a heating chamber heated by a heating apparatus, access to the heating chamber provided through a door into the heating chamber, the data logging module comprising:

a temperature sensor sampling a temperature in the heating chamber;

a door sensor sampling a state of the door;

a memory device recording the temperature, the state of the door, and a time of the sampling in a data packet at a predetermined interval; and

a display that displays a message indicating that the memory device is reaching capacity prior to the memory device reaching capacity.

14. The data logging module of claim 13, wherein the memory device has a circular memory buffer.

15. The data logging module of claim 13, further comprising a bus port for receiving an external memory device for storing the data.

16. The data logging module of claim 15, wherein the external memory device for storing the data is a USB flash memory drive.

17. The data logging module of claim 15, wherein, when data is transferred from the memory device to the external memory device, the data logging module analyzes a selected plurality of data packets excluding data packets within a predetermined time after the door is opened and generates a report summarizing the analysis of the selected plurality of the data packets.