Noncontact thermometry systems and methods

• US 9,750,414 B2
• Filed: 05/23/2016
• Issued: 09/05/2017
• Est. Priority Date: 03/18/2014
• Status: Active Grant

• Current Assignee: Welch Allyn Incorporated
• Original Assignee: Welch Allyn Incorporated
• Inventors: Lane, John A., Grant, Jennifer M., Kinsley, Matthew J., Mullin, Matthew D., Nguyen, Nick H., Quinn, David E., Salibra, Alisa R.
• Primary Examiner(s): HINDENBURG, MAX F
• Application Number:
  US15/162,078
• Publication Number:
  US 20160262630A1
• Time in Patent Office: 470 Days
• Field of Search: 600549
• CPC Class Codes: A61B 2562/0257 Proximity sensors
• CPC Class Codes: A61B 5/0075 by spectroscopy, i.e. measuring spectra, e.g. Raman spectroscopy, infrared absorption spectroscopy A61B5/0071 takes precedence
• CPC Class Codes: A61B 5/0077 Devices for viewing the surface of the body, e.g. camera, magnifying lens
• CPC Class Codes: A61B 5/01 Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue clinical contact thermometers G01K13/20
• CPC Class Codes: A61B 5/015 By temperature mapping of body part
• CPC Class Codes: A61B 5/7278 Artificial waveform generation or derivation, e.g. synthesising signals from measured signals A61B5/327 takes precedence
• CPC Class Codes: A61B 5/743 Displaying an image simultaneously with additional graphical information, e.g. symbols, charts, function plots
• CPC Class Codes: A61B 5/7475 User input or interface means, e.g. keyboard, pointing device, joystick
• CPC Class Codes: Y10T 29/49004 including measuring or testing of device or component part

Abstract

A method of determining a temperature of a patient includes determining that a temperature measurement device is located within at least one of a distance range and an alignment range of a portion of a measurement site of the patient, providing an indication to a user of the device that the device is located within the at least one of the distance range and the alignment range, and determining, with the device, a first temperature of a first location on the portion of the measurement site without contacting the patient with the device. Such a method also includes determining, with the device, a second temperature of a second location on the portion of the measurement site without contacting the patient with the device, wherein the second location is different from the first location. Such a method further includes determining a third temperature of the patient based on the first and second temperatures.

Claims

1. A method of determining a temperature of a patient, comprising:

determining that a temperature measurement device is located within at least one of a distance range and an alignment range of a portion of a measurement site of the patient;

providing an indication to a user of the device that the device is located within the at least one of the distance range and the alignment range;

determining, with the device, a temperature from an inner-canthal region of the patient, without contacting the patient with the device; and

determining a core temperature of the patient based on the temperature.

2. The method of claim 1, wherein determining that the temperature measurement device is located within the at least one of the distance range and the alignment range comprises determining that the portion of the measurement site is within a field of view of a sensor of the device.

3. The method of claim 1, wherein determining the temperature from the inner-canthal region of the patient comprises determining a first temperature of a first location in the inner-canthal region using an infrared temperature sensor of the device and determining a second temperature of a second location in the inner-canthal region, different from the first location, using the infrared temperature sensor, wherein the core temperature is determined based on the first and second temperatures.

4. The method of claim 1, further including receiving an input from the user in response to the indication, and determining the temperature from the inner-canthal region in response to the input.

5. The method of claim 1, further including capturing a visual image of the patient with a digital camera of the device, determining a physical attribute of the patient based at least in part on the visual image, and automatically selecting an operating mode of the device based on the attribute, wherein the core temperature is determined based on the selected operating mode.

6. The method of claim 5, wherein the attribute comprises at least one of a distance between a first location on the measurement site and a second location on the measurement site, a distance between at least one of the first and second locations and a third location on the measurement site, and a dimension of an ear of the patient.

7. A temperature measurement device, comprising:

a proximity sensor configured to determine that the device is located within at least one of a distance range and an alignment range of a measurement site of a patient, the measurement site comprising an inner-canthal region of the patient;

an infrared temperature sensor configured to determine a temperature of a location in the inner-canthal region without contacting the patient,

wherein the temperature of the location is determined in response to the first sensor determining that the device is located within the at least one of the distance range and the alignment range;

a controller in communication with the proximity sensor and the infrared temperature sensor, the controller being programmed to determine a core temperature of the patient based on the temperature of the location; and

a display in communication with the controller,

wherein the display is configured to display a visual image of the patient with a non-patient indication, illustrated in the image, that the device is located within the at least one of the distance range and the alignment range.

8. The device of claim 7, wherein the distance range extends from a plane substantially defined by the device to a plane substantially defined by a portion of the measurement site.

9. The device of claim 7, further comprising at least one additional infrared temperature sensor in communication with the controller and configured to determine at least one additional temperature of the inner-canthal region without contacting the patient, wherein the controller is programmed to determine the core temperature using the temperature of the location and the at least one additional temperature as inputs.

10. The device of claim 7, further including:

a digital camera in communication with the controller and configured to capture the visual image of the patient.

11. The device of claim 10, wherein the controller is configured to determine a physical attribute of the patient using an input from the digital camera and the proximity sensor, and to automatically select an operating mode of the device based on the attribute, wherein the core temperature is determined based on the selected operating mode.

12. The device of claim 7, further including a substantially fluid-tight compartment within the temperature measurement device, wherein a component of at least one of the controller, the proximity sensor, and the infrared temperature sensor is disposed within the compartment.

13. A temperature measurement device, comprising:

a proximity sensor configured to determine that the device is located within at least one of a distance range and an alignment range of a measurement site of a patient, the measurement site comprising an inner-canthal region of the patient;

an infrared temperature sensor configured to determine a temperature of a location in the inner-canthal region without contacting the patient,

wherein the temperature of the location is determined in response to the first sensor determining that the device is located within the at least one of the distance range and the alignment range; and

a controller in communication with the proximity sensor and the infrared temperature sensor, the controller being programmed to determine a core temperature of the patient based on the temperature of the location,

wherein the controller is configured to;

determine a physical attribute of the patient using a visual image of the patient and an input from the proximity sensor, and

automatically select at least one core temperature determination algorithm of a plurality of stored core temperature determination algorithms based on the attribute, wherein the core temperature is determined using the selected at least one core temperature determination algorithm.

14. The device of claim 13, wherein the physical attribute comprises one of an age of the patient, a gender of the patient, and an ethnicity of the patient.

15. The device of claim 13, wherein the location in the inner-canthal region comprises a first location, the controller being configured to:

determine, using the visual image and the input, a distance between the first location and a second location of the measurement site; and

determine the physical attribute based on the distance.

16. The device of claim 13, wherein the controller is configured to:

determine, using the visual image and the input, a dimension of a particular body part of the patient; and

determine the physical attribute based on the dimension.

17. The device of claim 13, further comprising a display in communication with the controller, the display being configured to display the visual image of the patient together with a non-patient indication of the physical attribute.