Temperature measurement system

• US 9,901,258 B2
• Filed: 10/21/2016
• Issued: 02/27/2018
• Est. Priority Date: 08/08/2012
• Status: Active Grant

• Current Assignee: Welch Allyn Incorporated
• Original Assignee: Welch Allyn Incorporated
• Inventors: Mullin, Matthew D., Anson, Michael J., Quinn, David E., Lane, John A.
• Primary Examiner(s): Le, Long V
• Assistant Examiner(s): Sakamoto, Colin T
• Application Number:
  US15/331,060
• Publication Number:
  US 20170035302A1
• Time in Patent Office: 494 Days
• 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 5/067 using accelerometers or gyroscopes
• CPC Class Codes: G01J 5/0011 Ear thermometers G01J5/021 and G01J5/049 take precedence
• CPC Class Codes: G01J 5/0025 Living bodies ear thermometers G01J5/0011; detecting, measuring or recording for diagnostic purposes A61B5/00
• CPC Class Codes: G01J 5/0265 Handheld, portable ear thermometers G01J5/049
• CPC Class Codes: G01J 5/0275 Control or determination of height or distance or angle information for sensors or receivers
• CPC Class Codes: G01J 5/12 using thermoelectric elements, e.g. thermocouples
• CPC Class Codes: G01J 5/48 Thermography; Techniques using wholly visual means
• CPC Class Codes: G01K 13/20 Clinical contact thermometers for use with humans or animals
• CPC Class Codes: G01K 13/223 Infrared clinical thermometers, e.g. tympanic
• CPC Class Codes: H05K 13/00 Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
• CPC Class Codes: Y10T 29/49002 Electrical device making

Abstract

A method of determining a temperature of a patient includes determining a temperature associated with a measurement site of the patient with a temperature device, and without contacting the patient with the device. The method also includes estimating a temperature of the patient based at least in part on the temperature associated with the measurement site. The temperature device includes a sensing element configured to determine the temperature associated with the measurement site, an imaging device, and a controller configured to estimate the temperature of the patient based on the temperature associated with the measurement site.

Claims

1. A device, comprising:

a sensing element configured to determine a temperature associated with a measurement site of a patient without contacting the measurement site;

an imaging device configured to capture a visual image of the measurement site; and

a controller operably connected to the sensing element and the imaging device, the controller being configured to;

identify a first location of the measurement site using the visual image,

control the sensing element to determine a temperature of the first location without contacting the first location, wherein determining the temperature of the first location with the sensing element includes focusing a field of view of the sensing element on the first location,

identify a second location of the measurement site using the visual image,

control the sensing element to determine a temperature of the second location without contacting the second location, wherein determining the temperature of the second location with the sensing element includes focusing the field of view on the second location, and

estimate a temperature of the patient based on the temperature of at least one of the first and second locations determined by the sensing element.

2. The device of claim 1, further including a display operably connected to the controller, the display being configured to display:

the visual image of the measurement site, and

a visual illustration of an alignment parameter superimposed on the displayed visual image, the alignment parameter comprising at least one of a preferred proximity range of the sensing element and a preferred angular position of the device relative to the patient.

3. The device of claim 1, further comprising:

a sensor separate from the sensing element configured to determine an alignment parameter indicative of a position of the device relative to the patient, and

a signal device configured to indicate whether the alignment parameter is within a predetermined parameter range at least partly in response to a determination of the alignment parameter made by the sensor.

4. The device of claim 1, wherein the sensing element comprises a single sensing element of an array of sensing elements.

5. The device of claim 1, wherein the at least one of the first and second locations comprises a sinus region of the patient.

6. The device of claim 1, wherein the controller is further configured to:

determine a disease state associated with the first location based on the temperature of the first location and the temperature of the second location; and

output a signal indicative of the disease state.

7. The device of claim 1, further including a signal device operably connected to the controller, wherein the controller is configured to make at least one additional determination, comprising:

determining the temperature of the at least one of the first and second locations is greater than or equal to a threshold temperature,

determining a rate of change of the temperature of the at least one of the first and second locations is greater than or equal to a rate threshold, or

determining the sensing element is disposed outside of a preferred proximity range of the sensing element; and

wherein the controller is configured to control the signal device to output a signal in response to the at least one additional determination.

8. The device of claim 7, wherein the signal comprises a communication indicating a desired relative movement between the patient and the device.

9. A device, comprising:

a sensing element configured to determine a temperature associated with a measurement site of a patient without contacting the measurement site;

an imaging device configured to capture a visual image of the measurement site; and

a controller operably connected to the sensing element and the imaging device, the controller being configured to;

identify a location of the measurement site using the visual image,

control the sensing element to determine a temperature of the location without contacting the location, wherein determining the temperature of the location with the sensing element includes focusing a field of view of the sensing element on the location, and

estimate a temperature of the patient based on the temperature of the location determined by the sensing element.

10. The device of claim 9, further comprising:

a sensor separate from the sensing element configured to determine an alignment parameter indicative of a position of the device relative to the patient, and

a signal device configured to indicate whether the alignment parameter is within a predetermined parameter range at least partly in response to a determination of the alignment parameter made by the sensor.

11. The device of claim 9, further comprising a sensor separate from the sensing element configured to determine an orientation of the device relative to the patient while the sensing element determines the temperature of the location, wherein

the controller is operably connected to the sensor,

the orientation of the device comprises at least one of a distance between the device and the patient, and an angle formed between the device and a plane substantially defined by the measurement site, and

the controller is configured to estimate the temperature of the patient based on the orientation of the device.

12. The device of claim 11, wherein the controller is further configured to:

assign a weight factor to at least one of the temperature of the location determined by the sensing element and the orientation of the device; and

estimate the temperature of the patient using the weight factor.

13. The device of claim 9, wherein the sensing element comprises a single sensing element in an array of sensing elements, and wherein the location comprises a location at a sinus region of the patient.

14. The device of claim 9, further comprising a display operably connected to the controller and configured to display the visual image, wherein

the sensing element comprises an infrared sensing element,

the location comprises a sinus region of the patient,

the location is displayed, via the display, simultaneously with a visual illustration of an alignment parameter, the alignment parameter being indicative of a preferred proximity range of the sensing element.

15. The device of claim 14, wherein the imaging device comprises a digital video camera, and the image comprises a real-time video image displayed, via the display, simultaneously with the visual illustration of the alignment parameter.