Medical measuring system

• US 6,171,264 B1
• Filed: 09/18/1998
• Issued: 01/09/2001
• Est. Priority Date: 05/15/1998
• Status: Expired due to Fees

• Current Assignee: Health Care International Consulting BADR AB
• Original Assignee: Biosys AB
• Inventors: Bader, Gaby
• Primary Examiner(s): Hindenburg, Max
• Application Number:
  US09/156,667
• Time in Patent Office: 844 Days
• Field of Search: 600/587, 600/595, 600/300, 600/301, 340/573.1, 340/573.3, 340/573.4
• US Class Current: 600/595
• CPC Class Codes: A61B 2505/07 Home care
• 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 5/0006 ECG or EEG signals
• 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 5/022 by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
• CPC Class Codes: A61B 5/11 Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb for measuring pulse A61B5/02 ;A61B5/1038 takes precedence; motion detection to correct for motion artifacts in physiological signals A61B5/721
• CPC Class Codes: A61B 5/1112 Global tracking of patients, e.g. by using GPS
• CPC Class Codes: A61B 5/6892 Mats

Abstract

In a medical meassuremnet system, measurements can be carried out at a distance from a hospital. Thus the patient is connected to a measuring system comprising measuring sensors and a unit for collecting data comprising a transmitter. The system also comprises a centrally located surveillance unit. The measuring sensors sense various physical and physiological parameters, for example brain activities, actions of the heart, respiration, blood pressure, blood values/tests and body movements. The sensed signals are transmitted to a portable small device of low weight for collecting and/or analyzing data, which is connected to a central surveillance unit, for example via the public switched telephone network (PSTN), a radio system, in particular a cellular radio system, or via a satellite communication. In a preferred embodiment the measuring sensors comprise a preamplifier having an identification circuit. The identification circuit is used for providing each preamplifier with a unique identity. In yet another preferred embodiment a measuring pad for measuring physical and physiological parameters is provided. The measuring pad comprises a film having piezo and/or pyro electrical characteristics, for example a PVF-film (Poly Vinyl Fluoride), or any other sensor having similar properties. By using such a film, which can convert movements into an electrical signal several advantages are achieved.

Claims

1. A portable medical measuring system comprising:

a plurality of sensors for measuring a plurality of physiological parameters of a patient;

a data-collecting unit connected to the sensors for receiving signals from the sensors;

said sensors and data collection unit being portable and mountable to a patient'"'"'s body and easily carried around by the patient; and

a remote surveillance unit located at a distance from the data-collecting unit and communicating over a bi-directional communication path with the data-collecting unit, a memory in the data-collecting unit accessible from the remote surveillance unit, the memory collecting physiological data from the patient over a long term and storing data regarding a plurality of the physiological parameters sensed.

2. A system as recited in claim 1 wherein at least one of said sensors measures respiration.

3. A system as recited in claim 1 wherein at least one of said sensors measure brain activities.

4. A system as recited in claim 1 wherein said surveillance unit transmits control signals to said data collecting unit for controlling said data collecting unit to change the physiological parameters being collected by the data collecting unit.

5. A system as recited in claim 1 further comprising at least one physical parameter sensor, and wherein said data collecting unit collects data regarding at least one physical parameter from said at least one physical parameter sensor.

6. A system as recited in claim 1 wherein said sensors and data collecting unit are mounted on the patient, and wherein said system continuously monitors the movements and location of the patient.

7. A system as recited in claim 1 further comprising a signal amplifier device interconnected between at least one of said sensors and said data-collecting unit, said signal amplifier device having an identification circuit for automatic identification of said amplifier to said data-collecting unit.

8. A system as recited in claim 7 wherein said signal amplifier device is capable of storing calibration data.

9. A system as recited in claim 7 wherein said amplifier device comprises a signal filter, the parameters of which can be controlled in response to control signals from said data collecting unit.

10. A system as recited in claim 1 further comprising a pressure sensitive element made of a film which converts pressure changes into an electrical signal, said pressure sensitive element operatively connected to said data collection unit.

11. A system as recited in claim 10 further comprising a shock absorbing elastic material disposed around said film of said pressure sensitive element.

12. A system as recited in claim 11 wherein said shock absorbing elastic material comprises rubber.

13. A system as recited in claim 10 wherein said film comprises polyvinyl fluoride.

14. A system as recited in claim 1 further comprising a measuring pad, said measuring pad comprising a pressure sensitive element, a protective coating surrounding said pressure sensitive element and electrically isolating said pressure sensitive element, and a shock absorbing material encapsulating said protective coating.

15. A system as recited in claim 14 wherein said shock absorbing material comprises rubber.

16. A portable medical measuring system comprising:

a plurality of sensors for measuring a plurality of physical parameters of a patient;

a data-collecting unit connected to the sensors for receiving signals from the sensors;

said sensors and data collection unit being portable and mountable to a patient'"'"'s body and easily carried around by the patient; and

a remote surveillance unit located at a distance from the data-collecting unit and communicating over a bi-directional communication path with the data-collecting unit, a memory in the data-collecting unit accessible from the remote surveillance unit, the memory collecting physical data from the patient over a long term and storing data regarding a plurality of the physical parameters sensed.

17. A system as recited in claim 16 wherein said sensors include at least one sensor for sensing body movements of the patient, said data collecting unit collecting data relating to body movements of the patient.

18. A measuring pad comprising:

a pressure sensitive element,

a protective coating surrounding the pressure sensitive element, electrically isolating the pressure sensitive element, and

a shock absorbing material encapsulating the protecting coating.

19. A pad as recited in claim 18 wherein the shock absorbing material is a rubber material.

20. A portable medical data unit comprising:

a plurality of input terminals for sensors provided for measuring physiological parameters of a patient,

a communication device for communicating over a bi-directional communication path with a remote surveillance unit located at a distance from the data-collecting unit;

a memory in the data-collecting unit accessible from the remote surveillance unit, the memory collecting physiological data from the patient over a long term and storing data regarding a multitude of physiological parameters from said input terminals; and

said portable medical data collecting unit dimensioned and configured to be mounted to a patient'"'"'s body and easily carried around by the patient.

21. A unit as recited in claim 20 wherein said memory collects data relating to respiration.

22. A unit as recited in claim 20 wherein said memory collects data relating to brain activities.

23. A unit as recited in claim 20 wherein said unit receives control signals from a remote surveillance unit, and changes physiological parameters being collected in response to said control signals.

24. A unit as recited in claim 20 wherein said memory further collects data regarding physical parameters.

25. A unit as recited in claim 20 wherein said unit continuously monitors a location of a patient on whom said unit is mounted.