Virtual medical instrument for performing medical diagnostic testing on patients

• US 5,623,925 A
• Filed: 06/05/1995
• Issued: 04/29/1997
• Est. Priority Date: 06/05/1995
• Status: Expired due to Term

• Current Assignee: Cmed, Inc. (Cmed Group Ltd.)
• Original Assignee: Cmed, Inc. (Cmed Group Ltd.)
• Inventors: Holland, Gregory R., Swenson, Michael R.
• Primary Examiner(s): Sykes, Angela D.
• Assistant Examiner(s): WINAKUR, ERIC FRANK
• Application Number:
  US08/463,055
• Time in Patent Office: 694 Days
• Field of Search: 128/630, 128/903, 364/413.02, 364/413.03
• US Class Current: 600/301
• CPC Class Codes: A61B 3/024 for determining the visual field, e.g. perimeter types
• CPC Class Codes: A61B 3/028 for testing visual acuity; for determination of refraction, e.g. phoropters
• 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 5/12 Audiometering
• CPC Class Codes: A61B 5/20 for measuring urological functions restricted to the evaluation of the urinary system A61B5/4375 takes precedence
• CPC Class Codes: A61B 5/369 Electroencephalography [EEG] devices for psychotechnics A61B5/16
• CPC Class Codes: A61B 5/389 Electromyography [EMG]
• CPC Class Codes: A61B 5/4863 Measuring or inducing nystagmus
• CPC Class Codes: G16H 40/63 for local operation

Abstract

A virtual medical instrument (VMI) system comprises data storage for storing input diagnostic test protocols for two or more of EEG, EKG, EMG/NCV, PFT, CMG, EP, ENG, visual acuity, visual field, limb dynometric and audiogram testing. The VMI system includes a universal interface having a number of electrical contacts and sets of electrical conduits associated with the different stored diagnostic test protocols. A selector enables a system user to select any one of the stored diagnostic test protocols for conducting on a patient. The system is constructed to enable the selected diagnostic test protocol to be performed on a patient after the corresponding set of electrical conduits are connected to the universal interface contacts and to the patient. Further included is an electrical signal generator connected to the universal interface for providing electrical signals to the patent if such electric signals are required by the selected test protocol. Electrical signals are received by the system through the electrical conduits connected to the universal interface from a patient and an output corresponding to the received electrical signals is provided, the output including one or more of strip chart printer, conventional printer, modem, computer diskette, audio recorder and video recorder.

Claims

1. A virtual medical instrument system for providing a medical facility with a plurality of patient medical diagnostic test protocols, said virtual medical instrument system comprising:

a. data storage means for storing said plurality of diagnostic test protocols;

b. means for inputting information into said storage means;

c. a universal interface having a number of electrical contacts;

d. a plurality of sets of electrical conduits associated with a like plurality of different patient diagnostic test protocols;

e. selecting means connected to said data storage means and said universal interface for enabling a user of the system to select any one of said plurality of stored patient diagnostic test protocols for conducting on said patient, and thereby to select the corresponding set of electrical conduits to be connected to particular electrical contacts of said universal interface;

f. operating means for causing the selected diagnostic test protocol to be performed on said patient after the corresponding set of electrical conduits are connected to the universal interface contacts and to said patient on which the selected diagnostic test is to be performed;

g. signal receiving means connected to said universal interface contacts through said set of electrical conduits for receiving electrical signals from said patient undergoing said selected diagnostic test protocol; and

h. output means connected to said signal receiving means for providing an output corresponding to said received electrical signals.

2. The virtual medical instrument system as claimed in claim 1, including comparing means connected with said electrical signal receiving means for comparing initially-received electrical signals from said patient undergoing said selected diagnostic test protocol against expected electrical signals for said selected diagnostic test protocol and for alerting a said of the system when said initially-received electrical signals are substantially different from said expected electrical signals.

3. The virtual medical instrument system as claimed in claim 2, wherein said storage means are configured for storing said expected electrical signals.

4. The virtual medical instrument system as claimed in claim 1, including electrical signal generating means connected to said universal interface for providing electrical signals to a patent undergoing said selected diagnostic test in accordance with patient stimuli requirements of said selected protocol.

5. The virtual medical instrument system as claimed in claim 1, wherein said plurality of stored diagnostic test protocols include two or more of the following diagnostic test protocols:

EEG, EKG, EMG/NCV, PFT, CMG, EP, ENG and audiogram.

6. The virtual medical instrument system as claimed in claim 1, wherein said operating means are cooperative for assuring that when the electrical conduits associated with the selected diagnostic test protocol are connected to said particular electrical contacts of the universal interface only the preselected diagnostic test protocol is enabled.

7. The virtual medical instrument system as claimed in claim 1, wherein said output means include one or more of a strip chart printer, a conventional printer, a modem, a computer diskette. an audio recorder and a video recorder.

8. The virtual medical instrument system as claimed in claim 1, wherein said selecting means and said operating means are connected to a visual display for providing visual information to the user of the system regarding the medical test protocols that can be selected and information concerning the selected medical diagnostic test protocol.

9. The virtual medical instrument system as claimed in claim 1, wherein the signal receiving means and the operating means are operative for enabling the establishing of upper and/or lower amplitude limits for at least some of said received electrical signals and for providing information to the user when said set amplitude limits are exceeded.

16. The virtual medical instrument system as claimed in claim 1, including limit setting means associates with the signal receiving means and the selecting means for enabling a user of the system to set upper and/or lower amplitude limits for at least some of said received electrical signals and for providing information to the user when said set amplitude limits are exceeded.

10. A virtual medical instrument system for providing a plurality of patient medical diagnostic test protocols, said virtual medical instrument system comprising:

a. data storage means for storing two or more of the following diagnostic test protocols;

EEG, EKG, EMG/NCV, PFT, CMG, EP, ENG, visual acuity, visual field, limb dynometric and audiogram, and means for inputting information into said storage means;

b. a universal interface having a number of electrical contacts;

c. a plurality of sets of electrical conduits associated with a like plurality of different patient diagnostic test protocols;

d. selecting means connected to said data storage means and said universal interface for enabling a user of the system to select any one of said plurality of stored patient diagnostic test protocols for conducting on a patient, and thereby to select the corresponding set of electrical conduits to be connected to particular electrical contacts of said universal interface;

e. operating means for causing the selected diagnostic test protocol to be performed on said patient after the corresponding set of electrical conduits are connected to the universal interface contacts and to said patient on which the selected diagnostic test is to be performed;

f. electrical signal generating means connected to said universal interface for providing electrical signals to said patent undergoing said selected diagnostic test if such electric signals are required according to the selected medical diagnostic test protocol;

g. means connected to said universal interface contacts through the set of electrical conduits for receiving electrical signals from said patient undergoing said selected diagnostic test protocol; and

h. output means connected to said signal receiving means for providing an output corresponding to said received electrical signals, said output means including one or more of a strip chart printer, a conventional printer, a modem, a computer diskette, an audio recorder and a video recorder.

11. The virtual medical instrument system as claimed in claim 10, wherein said receiving means include a preamplifier for amplifying said received signals.

12. The virtual medical instrument system as claimed in claim 10, wherein said operating means are cooperative for assuring that when the electrical conduits associated with the selected diagnostic test protocol are connected to said particular electrical contacts of the universal interface only the preselected diagnostic test protocol is enabled.

13. The virtual medical instrument system as claimed in claim 10, wherein said selecting means and said operating means are connected to a visual display for providing visual information to the user of the system regarding the medical test protocols that can be selected and information concerning the selected medical diagnostic test protocol.

14. The virtual medical instrument system as claimed in claim 10, wherein the signal receiving means and the operating means are operative for enabling the establishing of upper and/or lower amplitude limits for at least some of said received electrical signals and for providing information to the user when said set amplitude limits are exceeded.

15. A virtual medical instrument system for a medical facility having a plurality of patient medical diagnostic test protocols, said virtual medical instrument comprising:

a. a universal interface having a number of electrical contacts, said universal interface being configured for having connected to at least some of said contacts any selected set of a plurality of different sets of electrical conduits associated with a like plurality of different patient diagnostic test protocols;

b. selecting means connected to said universal interface for enabling a user of the system to select any one of said plurality of different patient diagnostic test protocols for conducting on a patient, and thereby to select the corresponding set of electrical conduits to be connected to particular electrical contacts of said universal interface;

c. operating means for causing the selected diagnostic test protocol to be performed on said patient after the corresponding set of electrical conduits are connected to the universal interface contacts and to said patient on which the selected diagnostic test protocol is to be performed;

d. signal receiving means connected to said universal interface through the set of electrical conduits for receiving electric signals from said patient undergoing said selected diagnostic test protocol;

e. output means for providing a detectable output corresponding to said received electrical signals; and

f. comparing means associated with said electrical signal receiving means for comparing initially-received electrical signals from said patient undergoing said selected diagnostic test protocol against expected electrical signals for said selected diagnostic test protocol and for alerting said user of the system when said initially-received electrical signals are substantially different from said expected electrical signals.

17. A virtual medical instrument system for a medical facility having a plurality of patient medical diagnostic test protocols, said virtual medical instrument comprising:

a. a universal interface having a number of electrical contacts, said universal interface being configured for having connected to at least some of said contacts any selected set of a plurality of different sets of electrical conduits associated with a like plurality of different patient diagnostic test protocols;

b. selecting means connected to said universal interface for enabling a user of the system to select any one of said plurality of different patient diagnostic test protocols for conducting on a patient, and thereby to select the corresponding set of electrical conduits to be connected to particular electrical contacts of said universal interface;

c. operating means for causing the selected diagnostic test protocol to be performed on said patient after the corresponding set of electrical conduits are connected to the universal interface contacts and to said patient on which the selected diagnostic test protocol is to be performed;

d. signal receiving means connected to said universal interface through the set of electrical conduits for receiving electric signals from said patient undergoing said selected diagnostic test protocol;

e. output means for providing a detectable output corresponding to said received electrical signals; and

f. electrical signal generating means connected to said universal interface for providing electrical signals to said patent undergoing said selected diagnostic test protocol in accordance with patient stimuli requirements of said selected protocol.

18. A virtual medical instrument system for a medical facility having a plurality of patient medical diagnostic test protocols, said virtual medical instrument comprising:

a. a universal interface having a number of electrical contacts, said universal interface being configured for having connected to at least some of said contacts any selected set of a plurality of different sets of electrical conduits associated with a like plurality of different patient diagnostic test protocols;

b. selecting means connected to said universal interface for enabling a user of the system to select any one of said plurality of different patient diagnostic test protocols for conducting on a patient, and thereby to select the corresponding set of electrical conduits to be connected to particular electrical contacts of said universal interface;

c. operating means for causing the selected diagnostic test protocol to be performed on said patient after the corresponding set of electrical conduits are connected to the universal interface contacts and to said patient on which the selected diagnostic test protocol is to be performed;

d. signal receiving means connected to said universal interface through the set of electrical conduits for receiving electric signals from said patient undergoing said selected diagnostic test protocol;

e. output means for providing a detectable output corresponding to said received electrical signals; and

f. information storage means associated with said selecting means for storing said plurality of diagnostic test protocols.

19. The virtual medical instrument system as claimed in claim 18, including means for inputting information into said storage means.

20. The virtual medical instrument system as claimed in claim 18, wherein said plurality of stored diagnostic test protocols include at least two of the following diagnostic test protocols:

EEG, EKG, EMG/NCV, PFT, CMG, EP, ENG, visual acuity, visual field, limb dynometry and audiogram.

21. The virtual medical instrument system as claimed in claim 20, wherein said plurality of stored diagnostic test protocols include EEG, EKG, EMG/NCV, PFT, CMG, EP, ENG, visual acuity, visual field, limb dynometry and audiogram test protocols.

22. A virtual medical instrument system for a medical facility having a plurality of patient medical diagnostic test protocols, said virtual medical instrument comprising:

a. a universal interface having a number of electrical contacts, said universal interface being configured for having connected to at least some of said contacts any selected set of a plurality of different sets of electrical conduits associated with a like plurality of different patient diagnostic test protocols;

b. selecting means connected to said universal interface for enabling a user of the system to select any one of said plurality of different patient diagnostic test protocols for conducting on a patient, and thereby to select the corresponding set of electrical conduits to be connected to particular electrical contacts of said universal interface;

c. operating means for causing the selected diagnostic test protocol to be performed on said patient after the corresponding set of electrical conduits are connected to the universal interface contacts and to said patient on which the selected diagnostic test protocol is to be performed;

d. signal receiving means connected to said universal interface through the set of electrical conduits for receiving electric signals from said patient undergoing said selected diagnostic test protocol;

e. output means for providing a detectable output corresponding to said received electrical signals; and

f. a visual display connected to said receiving means for providing visual information to a user of the system regarding the medical test protocols that can be selected and information concerning the selected medical test protocol.

23. The virtual medical instrument system as claimed in claim 22, wherein said visual display is connected to said signal receiving means for visually displaying said received signals from the universal interface.