Reusable wireless medical sensors

• US 10,258,269 B2
• Filed: 02/29/2016
• Issued: 04/16/2019
• Est. Priority Date: 03/14/2013
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Lin, Andy S.
• Primary Examiner(s): Pelton, Nathaniel R
• Assistant Examiner(s): Torres Ruiz, Johali A
• Application Number:
  US15/056,806
• Publication Number:
  US 20160174882A1
• Time in Patent Office: 1,142 Days
• Field of Search: 320108
• CPC Class Codes: A61B 2560/0214 of power generation or supply
• CPC Class Codes: A61B 2562/24 Hygienic packaging for medical sensors; Maintaining apparatus for sensor hygiene
• CPC Class Codes: A61B 5/0002 Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network A61B5/07 takes precedence; transmission systems for measured values G08C; transmission H04B; transmission of digital information H04L; wireless communication networks H04W
• CPC Class Codes: A61B 5/002 Monitoring the patient using a local or closed circuit, e.g. in a room or building A61B5/0017 takes precedence
• CPC Class Codes: A61B 5/0205 Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
• CPC Class Codes: A61B 5/14552 Details of sensors specially adapted therefor
• CPC Class Codes: A61B 5/1495 Calibrating or testing of in-vivo probes
• CPC Class Codes: A61B 5/6838 Clamps or clips
• CPC Class Codes: A61L 2/16 using chemical substances
• CPC Class Codes: A61L 2/24 Apparatus using programmed or automatic operation

Abstract

Embodiments of the present disclosure relate to reusable medical sensors. According to certain embodiments, the medical sensor may include a sensor housing, an emitter disposed in the sensor housing, the emitter being configured to direct light through the tissue of a patient, and a detector disposed in the sensor housing, the detector being configured to detect light from the emitter after the light has passed through the tissue of the patient and to convert the detected light to an electrical signal. The sensor may also include a dye disposed in the sensor housing, wherein the dye is configured to exit the sensor housing when the sensor housing is damaged and is within a solution.

Claims

1. A medical sensor comprising:

a sensor housing;

an emitter disposed in the sensor housing, the emitter being configured to direct light through a tissue of a patient;

a detector disposed in the sensor housing, the detector being configured to detect light from the emitter after the light has passed through the tissue of the patient and to convert the detected light to an electrical signal; and

a dye disposed in the sensor housing, wherein the dye is configured to exit the sensor housing when the sensor housing is damaged and is within a solution.

2. The sensor of claim 1, comprising a battery disposed in the sensor housing, the battery being adapted to provide power to the emitter and the detector.

3. The sensor of claim 2, wherein the sensor housing fully encapsulates the battery such that the sensor housing is devoid of openings for accessing the battery.

4. The sensor of claim 2, wherein the battery comprises a rechargeable battery.

5. The sensor of claim 4, comprising an induction coil disposed within the sensor housing and coupled to the rechargeable battery, wherein the induction coil is operable to inductively receive electrical power and is operable to supply charging power to the rechargeable battery.

6. The sensor of claim 1, wherein the medical sensor is a clip-style sensor and the sensor housing comprises a top portion and a bottom portion configured to clip to the tissue of the patient.

7. The sensor of claim 1, comprising a wireless transceiver disposed in the sensor housing and configured to wirelessly communicate with a patient monitor.

8. The sensor of claim 1, wherein the sensor housing comprises an external surface and one or more electrical components, and wherein the dye is disposed in the sensor housing between the external surface of the sensor housing and the one or more electrical components.

9. The sensor of claim 1, wherein the dye is disposed proximate a patient contact surface of the sensor housing.

10. The sensor of claim 1, wherein the sensor housing comprises an elastomer.

11. The sensor of claim 1, wherein the dye is a powder.

12. The sensor of claim 1, wherein the dye is a liquid.

13. A medical sensor system comprising:

a medical sensor configured to monitor a physiological parameter of a patient, the medical sensor comprising;

a housing comprising an indicator disposed in the housing, wherein the indicator is configured to exit the housing when the housing is damaged and in the presence of a solution, and wherein the indicator is configured to cause the solution to change color when in the presence of the solution.

14. The system of claim 13, wherein the housing comprises one or more electrical components encapsulated within the housing.

15. The system of claim 14, wherein the one or more electrical components comprise a rechargeable battery.

16. The system of claim 14, wherein the one or more electrical components comprise an emitter configured to direct light through the tissue of the patient and a detector configured to detect light from the emitter after the light has passed through the tissue of the patient and to convert the detected light to an electrical signal.

17. The system of claim 14, wherein the housing comprises an external surface, and the indicator is disposed in the housing between the external surface of the housing and the one or more electrical components.

18. The system of claim 13, wherein the indicator comprises a liquid dye or a powder dye.

19. The system of claim 13, wherein the indicator is contained within a separated portion of the housing while the medical sensor is intact.

20. The system of claim 13, wherein the indicator is impregnated into a material of the housing while the material is intact.

21. The system of claim 13, comprising a disinfecting device comprising a chamber configured to support the solution and to receive the medical sensor, wherein the disinfecting device is configured to detect the presence of the indicator within the solution.

22. A medical sensor system comprising:

a medical sensor configured to monitor a physiological parameter of a patient, the medical sensor comprising;

a housing comprising an indicator disposed in the housing, wherein the indicator is configured to exit the housing when the housing is damaged and in the presence of a solution; and

a disinfecting device comprising a chamber configured to support the solution and to receive the medical sensor, wherein the disinfecting device is configured to detect the presence of the indicator within the solution, and wherein the indicator is configured to cause the solution to change color when in the presence of the solution.