Wireless, reusable, rechargeable medical sensors and system for recharging and disinfecting the same

• US 9,415,125 B2
• Filed: 11/01/2013
• Issued: 08/16/2016
• Est. Priority Date: 05/02/2012
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Chen, Bo, Schlottau, Friso
• Primary Examiner(s): Conley, Sean E
• Assistant Examiner(s): SPAMER, DONALD R
• Application Number:
  US14/070,126
• Publication Number:
  US 20140056757A1
• Time in Patent Office: 1,019 Days
• Field of Search: 422/28
• US Class Current: 1/1
• CPC Class Codes: A61B 2090/0803 Counting the number of times an instrument is used
• CPC Class Codes: A61B 2560/0214 of power generation or supply
• CPC Class Codes: A61B 2560/028 Arrangements to prevent overuse, e.g. by counting the number of uses
• 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 5/14551 for measuring blood gases
• CPC Class Codes: A61B 5/6803 Head-worn items, e.g. helmets, masks, headphones or goggles
• CPC Class Codes: A61B 5/6816 Ear lobe
• CPC Class Codes: A61B 5/6826 Finger
• CPC Class Codes: A61B 90/98 using electromagnetic means, e.g. transponders
• CPC Class Codes: A61L 2/10 Ultraviolet radiation
• CPC Class Codes: A61L 2/16 using chemical substances
• CPC Class Codes: A61L 2/18 Liquid substances or solutions comprising solids or dissolved gases
• CPC Class Codes: A61L 2/20 Gaseous substances, e.g. vapours
• CPC Class Codes: A61L 2/24 Apparatus using programmed or automatic operation
• CPC Class Codes: A61L 2202/14 Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs
• CPC Class Codes: A61L 2202/24 Medical instruments, e.g. endoscopes, catheters, sharps
• CPC Class Codes: H02J 2207/20 Charging or discharging characterised by the power electronics converter
• CPC Class Codes: H02J 2310/23 The load being a medical device, a medical implant, or a life supporting device
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters

Abstract

Embodiments described herein may include systems and method for monitoring physiological parameters of a patient. Specifically, embodiments disclose wireless, reusable, rechargeable medical sensors that include an inductive coil coupled to a rechargeable battery. Additionally, embodiments disclose systems and methods for recharging and disinfecting the disclosed medical sensors.

Claims

1. A charging and disinfecting system comprising:

one or more wireless pulse oximetry sensors configured to generate a physiological signal of a patient, wherein the one or more wireless pulse oximetry sensors comprise a respective inductive coil; and

a charging and disinfecting device configured to charge and disinfect the one or more wireless pulse oximetry sensors, wherein the charging and disinfecting device comprises;

a housing having an inlet configured to receive a disinfecting agent;

a wired connection coupled to the housing and configured to receive electrical power from a power supply; and

one or more inductive stations disposed in the housing in a vertical arrangement with respect to a base of the housing, wherein each of the one or more inductive stations comprises a pair of prongs vertically extending from a leg coupled to the base of the housing, and wherein at least one prong of the pair of prongs comprises a respective primary inductive coil operable to receive the electrical power from the wired connection, and wherein the pair of prongs is configured to receive and position a respective wireless pulse oximetry sensor of the one or more wireless pulse oximetry sensors within the housing such that the respective primary inductive coil induces an electrical current in each respective inductive coil of the respective one or more wireless pulse oximetry sensors.

2. The system, as set forth in claim 1, wherein the inlet comprises a valve configured to adjust an influx of the disinfecting agent into the housing.

3. The system, as set forth in claim 1, wherein the disinfecting agent is a disinfecting solution.

4. The system, as set forth in claim 1, wherein the disinfecting agent is a disinfecting gas.

5. The system, as set forth in claim 1, wherein the inlet comprises a UV-penetrable region of the housing, and wherein the disinfecting agent is UV light.

6. The system, as set forth in claim 1, wherein the charging and disinfecting device comprises:

a display configured to present status data relating to the one or more wireless pulse oximetry sensors, status data relating to a charging and disinfecting cycle, or a combination thereof; and

a processor configured to send a data transfer signal to each respective wireless pulse oximetry sensor and download the status data from each respective wireless pulse oximetry sensor via inductive data transfer.

7. The system, as set forth in claim 6, wherein the charging and disinfecting device comprises a level sensor adapted to determine an amount of disinfecting agent in the housing and provide an indication of the amount to the processor, a user, or a combination thereof.

8. The system, as set forth in claim 6, wherein the processor is configured to determine a duration of the charging and disinfecting cycle suitable for charging and disinfecting the one or more wireless pulse oximetry sensors based at least in part upon status data relating to the respective wireless pulse oximetry sensor, information regarding the disinfecting agent, or a combination thereof.

9. The system, as set forth in claim 8, wherein each inductive station comprises an indicator configured to be activated by the processor based at least in part upon the data downloaded from respective wireless pulse oximetry sensor.

10. The system, as set forth in claim 6, wherein the processor is configured to control the inlet for receiving the disinfecting agent and to control direction of power from the power supply to the one or more inductive stations, and wherein the processor is configured to control opening of the inlet to enable the entry of the disinfecting agent into the housing and to cause the power supply to direct power to the one or more inductive stations in response to a determination that each respective wireless pulse oximetry sensor is eligible for charging and disinfecting.

11. The system, as set forth in claim 10, wherein the processor is configured to determine that each respective wireless pulse oximetry sensor is eligible for charging and disinfecting by:

downloading a first value from each respective wireless pulse oximetry sensor that is indicative of a number of times the respective wireless pulse oximetry sensor was disinfected;

comparing the first value to a first threshold;

determining that the respective wireless pulse oximetry sensor is eligible for disinfecting in response to a determination that the first value is less than the first threshold;

downloading a second value from each respective wireless pulse oximetry sensor that is indicative of a number of times the respective wireless pulse oximetry sensor was charged;

comparing the second value to a second threshold; and

determining that the respective wireless pulse oximetry sensor is eligible for charging in response to a determination that the second value is less than the second threshold.

16. The system, as set forth in claim 1, wherein each pair of prongs is configured to receive and position the respective wireless pulse oximetry sensor of the one or more wireless pulse oximetry sensors such that the respective wireless pulse oximetry sensor is aligned with the respective primary inductive coil.

21. The system, as set forth in claim 16, wherein the respective primary inductive coil is configured to recharge the respective wireless pulse oximetry sensor without a physical electrical coupling between the respective inductive station and the respective wireless pulse oximetry sensor.

12. A charging and disinfecting system comprising:

one or more wireless pulse oximetry sensors configured to generate a physiological signal of a patient, wherein the one or more wireless pulse oximetry sensors comprise a respective inductive coil; and

a charging and disinfecting device configured to charge and disinfect the one or more wireless pulse oximetry sensors, wherein the charging and disinfecting device comprises;

a housing configured to receive a disinfecting agent;

one or more inductive stations disposed in the housing in a vertical arrangement with respect to a base of the housing, wherein each of the one or more inductive stations comprises a pair of prongs vertically extending from a leg coupled to the base of the housing, and wherein at least one prong of the pair of prongs comprises a respective primary inductive coil operable to receive the electrical power from the wired connection, and wherein the pair of prongs is configured to receive and position a respective wireless pulse oximetry sensor of the one or more wireless pulse oximetry sensors within the housing such that the respective primary inductive coil induces an electrical current in each respective inductive coil of the respective one or more wireless pulse oximetry sensors; and

a processor configured to download status data from each respective wireless pulse oximetry sensor and to determine a duration of the charging and disinfecting cycle suitable for charging and disinfecting the one or more wireless pulse oximetry sensors based at least in part upon status data relating to the respective wireless pulse oximetry sensor, information regarding the disinfecting agent, or a combination thereof.

13. The system of claim 12, wherein the processor is configured to control entry of the disinfecting agent into the housing and to cause a power supply to direct power to the one or more inductive stations in response to a determination that each respective wireless pulse oximetry sensor is eligible for charging and disinfecting.

14. The system of claim 13, wherein the processor is configured to determine whether each wireless pulse oximetry sensor is eligible for charging and disinfecting by comparing a first value for each respective wireless pulse oximetry sensor that is indicative of a number of times that the respective wireless pulse oximetry sensor was disinfected to a first threshold for disinfecting and by comparing a second value for each respective wireless pulse oximetry sensor that is indicative of a number of times that the respective wireless pulse oximetry sensor was charged to a second threshold for charging.

15. The system of claim 12, wherein the charging and disinfecting device comprises a display configured to display the status data relating to the one or more wireless pulse oximetry sensors, status data relating to a charging and disinfecting cycle, or a combination thereof.

17. A charging and disinfecting system comprising:

one or more wireless pulse oximetry sensors configured to generate a physiological signal of a patient, wherein the one or more wireless pulse oximetry sensors comprise a respective inductive coil; and

a charging and disinfecting device configured to simultaneously charge and disinfect the one or more wireless pulse oximetry sensors, wherein the charging and disinfecting device comprises;

a housing configured to receive a disinfecting agent; and

one or more inductive stations disposed in the housing in a vertical arrangement with respect to a base of the housing, wherein each of the one or more inductive stations comprises a pair of prongs vertically extending from a leg coupled to the base of the housing, and wherein at least one prong of the pair of prongs comprises a respective primary inductive coil operable to receive the electrical power from the wired connection, and wherein the pair of prongs is configured to receive and position a respective wireless pulse oximetry sensor of the one or more wireless pulse oximetry sensors within the housing such that the respective primary inductive coil induces an electrical current in each respective inductive coil of the respective one or more wireless pulse oximetry sensors.

18. The system, as set forth in claim 17, wherein the charging and disinfecting device comprises a processor, and wherein the processor is configured to determine a duration of the charging and disinfecting cycle suitable for charging and disinfecting the one or more wireless pulse oximetry sensors based at least in part upon status data relating to the respective wireless pulse oximetry sensor, information regarding the disinfecting agent, or a combination thereof.

19. The system, as set forth in claim 18, wherein the processor is configured to control entry of the disinfecting agent into the housing and to cause a power supply to direct power to the one or more inductive stations in response to a determination that each respective wireless pulse oximetry sensor is eligible for charging and disinfecting.

20. The system, as set forth in claim 17, wherein each inductive station comprises an indicator configured to be activated by the processor based at least in part upon data downloaded from the respective wireless pulse oximetry sensor.