Modular wrist-worn processor for patient monitoring

• US 9,439,574 B2
• Filed: 02/17/2012
• Issued: 09/13/2016
• Est. Priority Date: 02/18/2011
• Status: Active Grant

• Current Assignee: Sotera Wireless Incorporated
• Original Assignee: Sotera Wireless Incorporated
• Inventors: McCombie, Devin, Trommer, Gunnar, Moon, Jim, Dhillon, Marshal, Clear, Scott, Groeli, Julian
• Primary Examiner(s): Thomson, William
• Assistant Examiner(s): JIAN, SHIRLEY XUEYING
• Application Number:
  US13/399,616
• Publication Number:
  US 20120296174A1
• Time in Patent Office: 1,670 Days
• US Class Current: 1/1
• CPC Class Codes: A61B 2505/03 Intensive care
• CPC Class Codes: A61B 2560/0412 Low-profile patch shaped housings
• CPC Class Codes: A61B 2560/0443 Modular apparatus
• CPC Class Codes: A61B 2560/045 with a separable interface unit, e.g. for communication
• CPC Class Codes: A61B 2562/0219 Inertial sensors, e.g. accelerometers, gyroscopes, tilt switches
• CPC Class Codes: A61B 2562/0238 Optical sensor arrangements for performing transmission measurements on body tissue
• CPC Class Codes: A61B 2562/222 Electrical cables or leads therefor, e.g. coaxial cables or ribbon cables
• CPC Class Codes: A61B 2562/227 Sensors with electrical connectors
• CPC Class Codes: A61B 5/0022 Monitoring a patient using a global network, e.g. telephone networks, internet
• CPC Class Codes: A61B 5/0024 for multiple sensor units attached to the patient, e.g. using a body or personal area network
• CPC Class Codes: A61B 5/0059 using light, e.g. diagnosis by transillumination, diascopy, fluorescence A61B5/0093, A61B5/1455, A61B5/02416 and A61B5/0261 take precedence
• CPC Class Codes: A61B 5/02055 Simultaneously evaluating both cardiovascular condition and temperature
• CPC Class Codes: A61B 5/021 Measuring pressure in heart or blood vessels A61B5/0205 takes precedence
• CPC Class Codes: A61B 5/02427 Details of sensor
• CPC Class Codes: A61B 5/02438 with portable devices, e.g. worn by the patient
• CPC Class Codes: A61B 5/029 Measuring or recording blood output from the heart, e.g. minute volume A61B8/065 takes precedence
• CPC Class Codes: A61B 5/053 Measuring electrical impedance or conductance of a portion of the body
• CPC Class Codes: A61B 5/0816 Measuring devices for examining respiratory frequency measuring frequency of electric signals G01R23/00
• CPC Class Codes: A61B 5/1116 Determining posture transitions
• CPC Class Codes: A61B 5/1118 Determining activity level
• CPC Class Codes: A61B 5/14542 : for measuring blood gases A61B5/14551 takes precedence
• CPC Class Codes: A61B 5/332 : Portable devices specially adapted therefor
• CPC Class Codes: A61B 5/6824 : Arm or wrist
• CPC Class Codes: A61B 5/6826 : Finger
• CPC Class Codes: A61B 5/6831 : Straps, bands or harnesses
• CPC Class Codes: A61B 5/742 : using visual displays A61B5/339 takes precedence
• CPC Class Codes: A61B 5/7465 : Arrangements for interactive communication between patient and care services, e.g. by using a telephone network telemetry of measured physiological signal A61B5/0002
• CPC Class Codes: A61B 5/749 : Voice-controlled interfaces
• CPC Class Codes: G06F 1/163 : Wearable computers, e.g. on a belt
• CPC Class Codes: G16H 20/17 : delivered via infusion or injection
• CPC Class Codes: G16H 40/63 : for local operation
• CPC Class Codes: G16H 40/67 : for remote operation
• CPC Class Codes: G16H 50/20 : for computer-aided diagnosis, e.g. based on medical expert systems
• CPC Class Codes: G16H 50/30 : for calculating health indices; for individual health risk assessment
• CPC Class Codes: G16Z 99/00 : Subject matter not provided for in other main groups of this subclass

Abstract

The invention provides a physiological probe that comfortably attaches to the base of the patient'"'"'s thumb, thereby freeing up their fingers for conventional activities in a hospital, such as reading and eating. The probe, which comprises a separate cradle module and sensor module, secures to the thumb and measures time-dependent signals corresponding to LEDs operating near 660 and 905 nm. The cradle module, which contains elements subject to wear, is preferably provided as a disposable unit.

Claims

1. A body-worn physiological data processing system, comprising:

(a) a housing supporting electronic circuitry, the housing providing a waterproof enclosure for the electronic circuitry meeting IEC 60529-2004 IPX7 standards, the electronic circuitry comprising;

a processor configured to receive data from, and export data to, one or more peripheral devices external to the housing, and to use data received from one or more of the peripheral device(s) in deriving a measurement of at least one physiological property of the wearer,

a display operably connected to the processor to display data received by the processor from one or more of the peripheral device(s), or a processed form thereof,

a power supply operably connected to the processor and display,

one or more electrical contacts proximate to one or more openings in the housing and operably connected to the processor to provide one or more connections through which the processor receives data from, and exports data to, the one or more peripheral devices;

(b) a base configured to releasably receive the housing, wherein when the housing is inserted into the base, one or more interface cavities are formed between the base and the housing,

wherein each interface cavity is adapted to releasably receive a connector on a data cable connected to a peripheral device, thereby establishing an operable connection between the peripheral device and the processor through the data cable, wherein insertion of the connector on the data cable into the interface cavity interconnects electrical contacts on the connector with corresponding electrical contacts on the housing, and wherein at least one interface cavity comprises a latch mechanism comprising at least one first recess in a wall thereof provided by the base, and at least one second recess in a wall thereof provided by the housing, said first and second recesses configured to receive a portion of the connector when inserted, the insertion of the connector thereby preventing separation of the base from the housing until the connector is removed;

(c) a reclosable retaining strap for fixing the data processing system to the wearer.

2. The body-worn physiological data processing system according to claim 1, wherein the system further comprises one or more peripheral devices independently selected from the group consisting of a body-worn optical probe adapted to measure at least one optical signal detected after interaction with the wearer'"'"'s tissue, an accelerometer, an ECG sensor, an ICG sensor, and a temperature sensor, wherein each peripheral device is adapted to establish an operable connection with the processor through a data cable connected to the peripheral device by insertion of a connector on the data cable into the interface cavity.

4. The body-worn physiological data processing system according to claim 1, wherein the electronic circuitry further comprises a transceiver operably connected to the processor for wirelessly communicating with a data acquisition system external to the body-worn physiological data processing system.

5. The body-worn physiological data processing system according to claim 4, wherein the electronic circuitry comprises a microphone and speaker configured for two-way voice communication.

6. The body-worn physiological data processing system according to claim 5, wherein the microphone and speaker are operably connected to the processor for voice over Internet protocol (VOW) communication.

7. The body-worn physiological data processing system according to claim 1, wherein at least one interface cavity comprises a transceiver which is adapted to establish an operable connection with the processor by insertion into the interface cavity.

8. The body-worn physiological data processing system according to claim 1, wherein the interface cavity comprising a latch mechanism further comprises a tab on a surface of the base, the tab configured to insert into a recess on the connector when inserted and thereby position the connector into the second recess.

9. The body-worn physiological data processing system according to claim 1, further comprising a plug adapted to insert into an interface cavity which is not in operable use, wherein the plug is not electrically active.

10. The body-worn physiological data processing system according to claim 9, wherein the plug is adapted to insert into an interface cavity comprising a latch mechanism, the insertion of the plug thereby preventing separation of the base from the housing until the plug is removed.

11. The body-worn physiological data processing system according to claim 1, wherein the base comprises a tab at a first end thereof, which inserts into a corresponding opening in the housing when mated thereto, and wherein mating of the base and the housing forms an interface cavity comprising a latch mechanism distal to the end comprising the tab.

12. The body-worn physiological data processing system according to claim 1, wherein the display provides a touch-screen interface for data entry to the processor.

13. The body-worn physiological data processing system according to claim 1, wherein the base and strap are configured as a disposable unit.

14. The body-worn physiological data processing system according to claim 1, wherein the base comprises a key structure configured to prevent insertion of an incompatible connector into an interface cavity.

15. The body-worn physiological data processing system according to claim 1, wherein the base and the housing, when mated, engage one another by a friction fit having a strength sufficient to prevent separation of the base and the housing due to the force of gravity.

3. The body-worn data processing system according to claim wherein the at least one physiological property is selected from the group consisting of heart rate, electrical activity of the heart, temperature, SpO2, blood pressure, cardiac stroke volume, cardiac output, motion, activity, posture, pulse rate, and respiration rate.

16. A base configured to releasably receive a housing supporting a processor, wherein when the housing is inserted into the base, one or more interface cavities are formed between the base and the housing, each interface cavity comprising one or more electrical contacts on the housing operably connected to the processor, and each interface cavity adapted to receive an electrical connector which makes sliding contact with the electrical contacts within the interface cavity to establish an operable connection between a peripheral device and the processor, the base comprising:

a latch mechanism at a first end of the base, the latch mechanism comprising at least one recess in a portion of the base which forms part of a first interface cavity, said first recesses configured to receive a portion of the electrical connector when inserted;

a tab on a portion of the base which forms part of the first interface cavity, the tab configured to insert into a recess on the electrical connector when inserted and thereby position the connector into a recess on a portion of the housing which forms part of the first interface cavity;

a tab at a second end of the base which is configured to insert into a corresponding opening in the housing when mated thereto;

wherein insertion of the electrical connector into the first interface cavity so that the connector is positioned into the recess on the housing prevents separation of the base from the housing until the connector is removed.

17. The base according to claim 16, wherein the base comprises openings for attaching a reclosable retaining strap.

18. The base according to claim 16, wherein the base is configured as a disposable unit.

19. The base according to claim 16, wherein the base comprises a key structure configured to prevent insertion of an incompatible connector into an interface cavity.

20. The base according to claim 16, wherein the base comprises one or more projections configured to contact the housing when mated thereto, wherein the one or more projections establish a friction fit having a strength sufficient to prevent separation of the base and the housing due to the force of gravity.