Medical apparatus

• US 10,146,912 B2
• Filed: 03/26/2010
• Issued: 12/04/2018
• Est. Priority Date: 03/30/2009
• Status: Active Grant

• Current Assignee: Danmedical, Ltd.
• Original Assignee: Danmedical, Ltd.
• Inventors: Drysdale, Ian George Moir, Williams, David Morris
• Primary Examiner(s): Nam, Hyun
• Assistant Examiner(s): Phan, Dean
• Application Number:
  US13/259,908
• Publication Number:
  US 20120108911A1
• Time in Patent Office: 3,175 Days
• Field of Search: None
• CPC Class Codes: G16H 30/20 for handling medical images, e.g. DICOM, HL7 or PACS
• CPC Class Codes: G16H 40/63 for local operation
• CPC Class Codes: G16H 40/67 for remote operation
• CPC Class Codes: G16Z 99/00 Subject matter not provided for in other main groups of this subclass

Abstract

The present invention relates to medical apparatus for monitoring one or more physiological conditions of a patient and a method for monitoring one or more physiological conditions of a patient. Apparatus for measuring medical data is described, comprising: at least one medical data gathering module, at least one microprocessor, and further wherein the apparatus further comprises a medical data handling module separate from the at least one microprocessor for buffering medical data transfer between the medical data gathering module and the microprocessor and optionally further wherein the medical data handling module can gather and store data in predetermined groups of data and the microprocessor can retrieve data from the medical data handling module in one or more multiples of predetermined groups of data. A method for measuring medical data is described, comprising: providing at least one medical data gathering module; providing at least one microprocessor; providing a data handling module separate from the at least one microprocessor; buffering medical data transfer between the medical data gathering module and the microprocessor optionally by gathering and storing data in predetermined groups of data and retrieving data from the medical data handling module in one or more multiples of predetermined groups of data.

Claims

1. An apparatus for measuring ECG (electrocardiogram) medical data, comprising:

at least one microprocessor;

at least one medical data gathering module for gathering ECG medical data, the at least one medical data gathering module comprising a plurality of analogue to digital (A-D) convertors;

a medical data handling module separate from the at least one microprocessor for buffering the transfer of medical data between the medical data gathering module and the at least one microprocessor, wherein the medical data handling module is arranged to gather and store data in at least one predetermined group of data and the at least one microprocessor is arranged to retrieve data from the medical data handling module in one or more multiples of the at least one predetermined group of data;

a unitary computer housing, comprising at least one ECG medical data gathering socket for connecting to an ECG cable attachable to a patient and for delivering ECG medical data signals to the at least one medical data gathering module, wherein the at least one medical data gathering module, the at least one microprocessor and the medical data handling module are located within the unitary computer housing;

a first protection circuit comprising a defibrillation protection circuit at an input to the medical data gathering module, whereby the defibrillation protection circuit protects the medical data gathering module, the medical data handling module, and the microprocessor from defibrillation voltages applied to the patient;

a second protection circuit comprising an electromagnetic isolation barrier at an output of the medical data gathering module, whereby the electromagnetic isolation barrier protects the patient from voltages from a power supply, and wherein the medical data gathering module lies between the first and second protection circuits so that an analogue ECG medical data signal is amplified and digitised within the medical data gathering module before being processed by the electromagnetic isolation barrier.

2. The apparatus according to claim 1, wherein gathered medical data is retrieved by the at least one microprocessor intermittently from the at least one medical data handling module.

3. The apparatus according to claim 1, wherein the microprocessor comprises Microsoft Windows®

or Apple Mac®

or Linux operating systems.

4. The apparatus according to claim 1, further comprising a cable identifying circuit for identifying whether a three lead or 10 lead electrocardiogram connecting cable is connected and/or an ECG medical data gathering cable lead off circuit for identifying when no ECG cable is connected.

5. The apparatus according to claim 1, wherein the medical data handling module comprises either 1) a further microprocessor or 2) a further microprocessor and memory or 3) system programmable on a chip or 4) a field programmable gate array (FPGA).

6. The apparatus according to claim 1, wherein the medical data handling module comprises at least one first in first out (FIFO) memory buffer.

7. The apparatus according to claim 1, wherein the medical data handling module comprises either, 1) a programmable read only memory, or 2) an electronically programmable read-only memory (EPROM), or 3) an electronically erasable programmable read only memory (EEPROM), for delivering instructions to the medical data handling module.

8. The apparatus according to claim 1, comprising an internal data bus in which at least one further medical data gathering module is provided and delivers data directly to the at least one microprocessor via the internal data bus.

9. The apparatus according to claim 1, wherein at least one further medical data gathering module is provided, comprising one or more of an electrocardiogram data gathering module, a BP data gathering module, spirometry data gathering module, invasive or non-invasive blood pressure monitoring data gathering module;

spirometry (lung function) data gathering module;

pulse oximetry data gathering module;

temperature data gathering module;

both invasive and non-invasive blood pressure data gathering module;

audiometry testing data gathering module;

audio heart and/or lung sounds data gathering module;

retinal testing data gathering module;

ultrasound data gathering module;

dermatology screening (image capture) data gathering module;

imaging, tissue and/or wound care data gathering module;

video endoscopy data gathering module;

video for remote consultations data gathering module;

video conference data gathering module;

audio data gathering module;

scaliometer (height) data gathering module;

foetal heart Doppler ultrasound and/or audio acquisition and/or analysis data gathering module and weighing scales data gathering module.

10. The apparatus according to claim 1, wherein a power supply comprising a rechargeable battery is provided within the housing.

11. The apparatus according to claim 1, comprising an ECG medical data gathering cable.

12. The apparatus according to claim 1, wherein the at least one medical data gathering module gathers data quasi-continuously, and/or at a regular intervals and/or the at least one computer microprocessor retrieves data intermittently and/or or the at least one computer microprocessor retrieves data intermittently either at regular or irregular intervals.

13. The apparatus according to claim 1, wherein the predetermined group of data is N bits of data and/or T1 seconds worth of data and wherein the medical data handling module samples data from the at least one medical data gathering module across N channels once every T1 seconds.

14. The apparatus according to claim 1, wherein the at least one microprocessor attempts to retrieve data in multiples of N bits of data from the data handling module once every T2 seconds and wherein when the at least one microprocessor misses retrieving data the at least one microprocessor attempts to retrieve data in multiples of N from the data handling module at another time and/or at the end of the next T2 second interval.

15. The apparatus according to claim 13, wherein data in excess of a multiple of N and/or of T1 seconds worth of data is left in the medical data handling module until the next data retrieval round.

16. The apparatus according to claim 13, wherein analysis and calculation means is provided for use by the at least one computer microprocessor to conduct analysis and calculation on the medical data at a resolution of T1 seconds, the resolution of the medical data gathering rate.

17. The apparatus according to claim 1, wherein the unitary housing is a unitary laptop computer housing comprising a base, a lid, front wall, rear wall and side walls, and the medical ECG data gathering socket is in one of a front wall, rear wall, side wall.

18. The apparatus according to claim 1, wherein the second protection circuit is provided at the output of the analogue to digital convertors.

19. The apparatus according to claim 1, wherein the analogue to digital convertors receive a common control signal (clock) from the medical data handling module and are set up to run in synchrony.

20. The apparatus according to claim 19, wherein the medical data handling module provides a clock signal to the analogue to digital convertors to control a digitization sampling rate.

21. The apparatus according to claim 1, wherein the medical data handling module collects and stores every measurement delivered by the analogue to digital convertors.

22. A method for measuring ECG medical data, comprising:

providing at least one microprocessor;

providing at least one medical data gathering module for gathering ECG medical data, the at least one medical data gathering module comprising a plurality of analogue to digital (A-D) convertors;

providing a medical data handling module separate from the at least one microprocessor for buffering the transfer of medical data between the medical data gathering module and the at least one microprocessor, wherein the medical data handling module is arranged to gather and store data in at least one predetermined group of data and the at least one microprocessor is arranged to retrieve data from the medical data handling module in one or more multiples of the at least one predetermined group of data;

providing a unitary computer housing, comprising at least one ECG medical data gathering socket for connecting to an ECG cable attachable to a patient and for delivering ECG medical data signals to the at least one medical data gathering module, wherein the at least one medical data gathering module, the at least one microprocessor and the medical data handling module are located within the unitary computer housing;

providing a first protection circuit comprising a defibrillation protection circuit at an input to the medical data gathering module, whereby the defibrillation protection circuit protects the medical data gathering module, the medical data handling module, and the microprocessor from defibrillation voltages applied to the patient;

providing a second protection circuit comprising an electromagnetic isolation barrier at an output of the medical data gathering module, whereby the electromagnetic isolation barrier protects the patient from voltages from a power supply, and wherein the medical data gathering module lies between the first and second protection circuits so that an analogue ECG medical data signal is amplified and digitised within the medical data gathering module before being processed by the electromagnetic isolation barrier; and

amplifying and digitising ECG medical data within the medical data gathering module prior to the electromagnetic isolation barrier; and

buffering ECG medical data transfer between the medical data gathering module and the microprocessor by the medical data handling module.

23. A method according to claim 22, comprising:

gathering and storing data in predetermined groups of data in the medical data handling module; and

,

the microprocessor retrieving data from the medical data handling module in one or more multiples of the predetermined groups of data.

24. A method according to claim 22, comprising collecting and storing in the medical data handling module every measurement delivered by the analogue to digital convertors.