System and method employing a thermocouple junction for monitoring of physiological parameters

• US 9,615,752 B2
• Filed: 07/25/2014
• Issued: 04/11/2017
• Est. Priority Date: 08/14/2006
• Status: Active Grant

• Current Assignee: Frederick J. Buja
• Original Assignee: Frederick J. Buja
• Inventors: Buja, Frederick J.
• Primary Examiner(s): Stout, Michael C
• Application Number:
  US14/341,133
• Publication Number:
  US 20150025331A1
• Time in Patent Office: 991 Days
• Field of Search: 600549
• 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 5/021 Measuring pressure in heart or blood vessels A61B5/0205 takes precedence
• CPC Class Codes: A61B 5/02108 from analysis of pulse wave characteristics
• CPC Class Codes: A61B 5/02141 Details of apparatus construction, e.g. pump units or housings therefor, cuff pressurising systems, arrangements of fluid conduits or circuits A61B5/02233, A61B5/0235 take precedence
• CPC Class Codes: A61B 5/026 Measuring blood flow A61B3/1233, A61B3/1241 take precedence
• CPC Class Codes: A61B 5/03 Detecting, measuring or recording fluid pressure within the body other than blood pressure, e.g. cerebral pressure; Measuring pressure in body tissues or organs A61B5/205 takes precedence
• CPC Class Codes: A61B 5/08 Detecting, measuring or recording devices for evaluating the respiratory organs A61B5/0205 takes precedence
• CPC Class Codes: A61B 5/0816 Measuring devices for examining respiratory frequency measuring frequency of electric signals G01R23/00
• CPC Class Codes: A61B 5/082 Evaluation by breath analysis, e.g. determination of the chemical composition of exhaled breath A61B5/083, A61B5/091 take precedence
• CPC Class Codes: A61B 5/0878 using temperature sensing means
• CPC Class Codes: A61B 5/742 using visual displays A61B5/339 takes precedence
• CPC Class Codes: G01K 1/024 for remote indication
• CPC Class Codes: G01K 13/02 for measuring temperature of moving fluids or granular materials capable of flow
• CPC Class Codes: G01K 13/20 Clinical contact thermometers for use with humans or animals
• CPC Class Codes: G01K 7/02 using thermoelectric elements, e.g. thermocouples

Abstract

Disclosed are systems and methods for enabling the acquisition of physiological parameters of a mammal or other specimen using thermo-mechanical responses (e.g., temperature, pressure and alternatively acceleration, pulse, position). In accordance with one example embodiment, a monitoring device for wired and/or wireless sensors is used to acquire a series of sensor signals that are attached to achieve the physiological measurements of a mammal vital signs is provided. The device includes a Temperature-Pressure (T-P) sensor configured to attach to respiration, vascular pressure and audio points of the mammal in a manner suitable for obtaining the acquired individual sensor electrical signal. The sensor system is configured to attach to alternative locations of the specimen in a manner suitable for obtaining electrical signals in communication with a signal receiver and transmitter. Physiological parameters, such as those associated with vital signs (temperature, pulse, respiration, etc.), can be obtained using the monitoring device and associated sensors.

Claims

1. A physiological sensor, comprising:

an exposed thermocouple having a cross-wire micro-bead junction formed at the termination of two dissimilar metal wires, whereby the micro-bead junction senses a physiological parameter, said thermocouple producing a signal in response to the physiological parameter, wherein the micro-bead junction senses changes in response to thermo-mechanical stimuli and produces a signal including a pressure component where the pressure component changes in response to a fluctuation in pressure at a surface of the micro-bead junction; and

circuitry connected to the thermocouple for receiving the signal, converting the signal to data representing at least one physiological parameter including at least the pressure component, and at least temporarily storing data representing the physiological parameter including at least the pressure component.

2. The sensor according to claim 1, wherein the physiological parameter includes body temperature, and where said circuitry also stores data over a period of time to sense changes in temperature to thereby represent a physiological process.

3. The sensor according to claim 1, wherein said thermo-mechanical stimulii include gas, liquid, or solid and where said signal includes a response to a pressure change in the gas, liquid, or solid.

4. The sensor according to claim 3, wherein said micro-bead is formed as a contact region between two dissimilar metal wires.

5. The sensor according to claim 4, wherein said contact is a welded contact.

6. The sensor according to claim 5, wherein said dissimilar metal wires have a diameter of less than 0.006 inches.

7. The sensor according to claim 6, wherein the diameter of said metal wires is no larger than 0.001 inches.

8. The sensor according to claim 1, wherein said circuitry includes a timing device and where said junction is configured to be placed in proximity to a physiological specimen'"'"'s respiratory orifice to sense respiration and said circuitry outputs data including a respiration rate of the physiological specimen.

9. The sensor according to claim 1, wherein said circuitry includes a timing device and where said junction is configured to be placed in proximity to an artery of a physiological specimen to sense changes in the pressure of the artery and said circuitry outputs data including a heart rate of the physiological specimen.

10. The sensor according to claim 1, wherein said circuitry includes a pair of parallel arrays each comprising a plurality of spaced-apart junctions, and a timing device, and where said arrays of spaced-apart junctions are configured to be placed on the body of the physiological specimen in proximity to an artery of a physiological specimen and said circuitry outputs data including a flow rate of blood flowing through the artery of the physiological specimen.

11. The sensor according to claim 1, wherein the physiological parameter is blood pressure, and where said circuitry stores data over a period of time to sense changes in blood pressure and to thereby represent a physiological process.

12. The sensor according to claim 1, wherein said sensor further comprises a system to periodically receive the stored data and to process the data for presentation on a display.

13. The sensor according to claim 1, further comprising a plurality of thermocouple junctions, each having micro-bead junctions wherein the physiological parameters sensed include temperature and rate of respiration.

14. The sensor according to claim 1, further including a housing and wherein said junction is configured to be maintained in proximity to a physiological specimen by said housing.

15. A sensor, comprising:

a welded micro-bead junction of dissimilar wires sensing both thermal and pressure stimuli, whereby the junction formed at the end of said dissimilar wires is configured to be positioned to detect pressure in the form of force applied to the physiological specimen, said junction producing a signal in response to the force; and

circuitry connected to the junction for receiving the signal, converting the signal to data representing both thermal and pressure stimuli, and at least temporarily storing data representing the stimuli.

16. The sensor according to claim 15, wherein said signal includes a component representing an applied bead surface force.

17. A method for sensing a force at a surface of a physiological specimen, comprising:

adapting, to the surface of the physiological specimen, a sensor including an exposed micro-bead junction of dissimilar wires sensing both thermal and pressure stimuli, whereby the junction is positioned in relation to the surface to detect the force, said junction producing a signal in response to the force, and circuitry connected to the junction for receiving the signal, converting the signal to data representing both thermal and pressure stimuli, and at least temporarily storing data representing thermal and pressure stimuli; and

processing the data to determine, as a component of the signal, a portion of the signal due to application of the force.

18. The method of claim 17, further comprising processing the data for illustration on a display.

19. The method of claim 17 wherein said sensor includes a housing and is adapted for use with the physiological specimen by attaching the housing so that at least a surface of the sensor provides an operative connection between the physiological specimen and the micro-bead junction in order to detect the force.