Medical monitoring patch device and methods

• US 8,750,954 B2
• Filed: 03/31/2009
• Issued: 06/10/2014
• Est. Priority Date: 03/31/2008
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Petersen, Ethan, Perez, Mark
• Primary Examiner(s): Winakur, Eric
• Assistant Examiner(s): Fardanesh, Marjan
• Application Number:
  US12/935,747
• Publication Number:
  US 20110028814A1
• Time in Patent Office: 1,897 Days
• Field of Search: 600309-344
• US Class Current: 600/323
• CPC Class Codes: A61B 2560/0412 Low-profile patch shaped housings
• CPC Class Codes: A61B 5/14552 Details of sensors specially adapted therefor
• CPC Class Codes: A61B 5/6833 Adhesive patches
• CPC Class Codes: Y10T 29/49826 Assembling or joining

Abstract

Embodiments described herein may include systems and methods for monitoring physiological parameters of a patient. Specifically, embodiments disclose the use of a generally self-contained pulse oximeter that is small and lightweight, such that it may be comfortably affixed to a patient to provide physiological data pertaining to the patient. Embodiments also provide methods of using and manufacturing a pulse oximetry patch.

Claims

1. A pulse oximetry patch adapted for placement adjacent to tissue to be tested, comprising:

an upper layer comprising a display window;

a bottom layer configured to be disposed on a tissue measurement site of a patient; and

a middle layer disposed between the upper layer and the bottom layer comprising;

one or more light emitters and one or more light detectors, the emitters and detectors configured to acquire physiological data from the patient;

a drive engine configured to activate the one or more light emitters;

an oximetry engine configured to receive a signal corresponding to the physiological data acquired by the detectors and generate an output corresponding to the physiological data; and

a display adapted to receive the output corresponding to the physiological data; and

wherein the upper layer and the bottom layer are configured to be separated from each other to enable the removal of the middle layer, and wherein the upper and bottom layers are disposable and the middle layer is reusable.

2. The pulse oximetry patch of claim 1, wherein the bottom layer comprises a layer of adhesive for attaching the pulse oximetry patch to the patient.

3. The pulse oximetry patch of claim 1, wherein the display comprises a display configured to display a numerical value.

4. The pulse oximetry patch of claim 1, wherein the display comprises one or more light emitting diodes.

5. The pulse oximetry patch of claim 4, wherein one of the one or more light emitting diodes blinks correlatively with the heartbeat of the patient.

6. The pulse oximetry patch of claim 4, wherein one of the one or more light emitting diodes is activated or deactivated in response to a comparison of a measured blood-oxygen saturation value and a programmed blood-oxygen saturation value.

7. The pulse oximetry patch of claim 6, wherein the one or more light emitting diodes are color coded.

8. The pulse oximetry patch of claim 1, comprising a wireless transmitter configured to transmit patient parameters to an external monitor, display, and/or other device.

9. The pulse oximetry patch of claim 1, wherein the drive engine, the oximetry engine, the display, or any combination thereof, are from a used pulse oximetry patch, and wherein the upper layer, the bottom layer, or a combination thereof, are new.

10. The pulse oximetry patch of claim 1, wherein the bottom layer comprises a window configured to align with the one or more light emitters and the one or more light detectors.

11. A pulse oximeter comprising:

a single processor chip comprising;

one or more first converters configured to activate one or more signal emitters for transmission of an emitted signal into tissue of a patient;

one or more second converters configured to receive a signal generally correlative to the emitted signal from the tissue of the patient from one or more signal detectors;

a core processor configured to calculate physiological parameters of the patient from the signal from the one or more signal detectors, wherein the core processor is configured to receive an additional signal and determine therefrom whether outer layers of the pulse oximeter have been separated from one another; and

a program memory operatively coupled to the core processor and configured to store operating software of the pulse oximeter.

12. The pulse oximeter of claim 11, wherein the one or more first converters is configured to activate one or more display LEDs to indicate the physiological parameters of the patient.

13. The pulse oximeter of claim 11, wherein the single processor chip is configured to transmit output data corresponding with physiological parameters of the patient to a numerical display.

14. The pulse oximeter of claim 11, wherein the core processor is configured to disable the pulse oximeter in response to determining that the outer layers of the pulse oximeter have been separated from one another.

15. The pulse oximeter of claim 11, wherein the core processor is configured to erase the operating software stored in the program memory in response to determining that the outer layers of the pulse oximeter have been separated from one another.

16. The pulse oximeter of claim 15, wherein the program memory is configured to be reprogrammed with the operating software.

17. A method of remanufacturing a used pulse oximetry patch comprising:

obtaining the used pulse oximetry patch, wherein the used pulse oximetry patch comprises;

an upper layer comprising a display window;

a bottom layer configured to be disposed on a tissue measurement site of a patient; and

a middle layer disposed between the upper layer and the bottom layer comprising;

one or more light emitters and one or more light detectors, wherein the emitters and detectors are configured to acquire physiological data from the patient;

a light drive configured to activate the one or more light emitters;

a processor configured to receive the physiological data from the detectors and to determine a physiological parameter of the patient based at least in part upon the physiological data; and

a display configured to display the physiological parameter;

retaining the middle layer in a remanufactured pulse oximetry patch; and

replacing the upper layer, the bottom layer, or a combination thereof.