Cutaneous testing device for determining nervous system function

• US 5,381,805 A
• Filed: 09/09/1992
• Issued: 01/17/1995
• Est. Priority Date: 01/24/1990
• Status: Expired due to Fees

• Current Assignee: Topical Testing, Inc.
• Original Assignee: Topical Testing, Inc.
• Inventors: Tuckett, Robert P., Fisher, John H., Horch, Kenneth W., Evans, Barry L.
• Primary Examiner(s): Sykes, Angela D.
• Application Number:
  US07/943,438
• Time in Patent Office: 860 Days
• Field of Search: 128/734, 128/739, 128/741-742, 128/744, 128/774, 128/782
• US Class Current: 600/552
• CPC Class Codes: A61B 5/0051 by applying vibrations
• CPC Class Codes: A61B 5/4041 Evaluating nerves condition
• CPC Class Codes: A61B 5/4824 Touch or pain perception evaluation A61B5/4821 takes precedence
• CPC Class Codes: A61B 5/4827 assessing touch sensitivity, e.g. for evaluation of pain threshold
• CPC Class Codes: A61B 5/483 by thermal stimulation

Abstract

An automatic apparatus for testing cutaneous responses of a patient is disclosed. The embodiments of the invention variously include components for: applying a nonambient temperature to the patient'"'"'s skin to test the patient'"'"'s response to thermal stimuli; pricking the patient'"'"'s skin to test the patient'"'"'s response to pain; indenting the patient'"'"'s skin to test the patient'"'"'s response to touch; vibrating the patient'"'"'s skin to test the patient'"'"'s response to vibration; and for making two spaced apart contacts with the patient'"'"'s skin to test the patient'"'"'s two point discrimination response. A general purpose computer and dedicated control circuits function to control the operation of the system and record the responses of the patient. The embodiments of the present invention are able to repeatedly reproduce each test so that the tests carried out are reproducible and accomplished in a minimum of time.

Claims

1. A testing module comprising:

a patient cutaneous testing apparatus for performing a cutaneous test;

a hemispherical dome having an exterior and an interior, said dome configured such that said testing apparatus can substantially reside within the interior of said dome and such that a part of a patient'"'"'s anatomy to be tested can rest over the exterior of the dome during a cutaneous testing procedure, allowing the patient to maintain a relatively relaxed posture during the testing procedure; and

means for rotating said dome,

wherein said testing apparatus is positioned during operation to administer a predetermined patient stimulus at or beyond the exterior of said dome, and wherein said testing apparatus is capable of being accurately and reproducibly positioned with respect to the part of the patient'"'"'s anatomy to be tested.

2. A testing module as defined in claim 1 further comprising an opening disposed through said dome and positioned such that said testing apparatus can partially protrude through said dome and contact the skin of said patient.

3. A testing module as defined in claim 1 further comprising means for defining the position of the dome relative to the remainder of the module.

4. A testing module as defined in claim 3 wherein said means for defining the position of the dome relative to the remainder of the module comprises indicia on said dome and further indicia on another portion of said module.

5. A testing module as defined in claim 1 wherein said dome is configured such that a patient'"'"'s hand can rest over the exterior of the dome during a cutaneous testing procedure on the hand or the digits.

6. A testing module as defined in claim 1 wherein said module further comprises an arm rest positioned near said dome such that when a portion of the patient'"'"'s hand rests over said exterior of said dome during the testing procedure, the patient'"'"'s arm may rest on said arm rest.

7. A testing module as defined in claim 6 further comprising means for defining the position of the arm rest relative to the remainder of the module.

8. A testing module as defined in claim 7 wherein said means for defining the position of the arm rest relative to the remainder of the module comprise indicia on said arm rest and further indicia on a further portion of said module.

9. A testing module as defined in claim 8 comprising multiple sets of indicia on said arm rest and on further portions of said module.

10. A testing module as defined in claim 9 wherein said indicia define the position of the arm rest within a vertical rotational plane.

11. A testing module as defined in claim 9 wherein said indicia define the position of the arm rest within a horizontal rotational plane.

12. A testing module as defined in claim 1 wherein said testing apparatus comprises temperature means for applying a nonambient temperature to the patient'"'"'s skin.

13. A testing module as defined in claim 1 wherein said testing apparatus comprises pinprick means for pricking the patient'"'"'s skin.

14. A testing module as defined in claim 1 wherein said testing apparatus comprises means for indenting the patient'"'"'s skin.

15. A testing module as defined in claim 1 wherein said testing apparatus comprises means for vibrating the patient'"'"'s skin.

16. A testing module as defined in claim 1 wherein said testing apparatus comprises means for making two spaced apart contacts with the patient'"'"'s skin.

17. A testing module comprising:

a patient cutaneous testing apparatus including a probe for performing a cutaneous test;

a hemispherical dome having an interior and an exterior, said testing apparatus being capable of substantially residing within said interior of said dome, said dome configured such that a part of a patient'"'"'s anatomy to be tested can rest over the exterior of the dome during a cutaneous testing procedure;

means for accurately and reproducibly positioning the part of the patient'"'"'s anatomy to be tested with respect to said probe, said means comprising rotation means for rotating said dome and positioning means for accurately positioning said dome during operation of said rotation means,

wherein said probe is positioned such that when in operation it administers a predetermined patient stimulus at or beyond the exterior of said dome.

18. A testing module as defined in claim 17, further comprising a housing, wherein said dome is rotatable with respect to said housing, and wherein said rotation means comprises:

a first substantially circular ring attached to said housing, having a tongue, and having a very low friction surface; and

a second substantially circular ring securely attached to said dome and having a groove which is configured to receive said tongue of said first substantially circular ring.

19. A testing module as defined in claim 17, further comprising a base supporting said dome, wherein said positioning means for accurately positioning said dome during operation of said rotation means comprises indicia located on said base and said dome.

20. A testing module as defined in claim 17, wherein said positioning means for accurately positioning said dome during operation of said rotation means comprises a potentiometer for sensing the position of said dome.

21. A testing module as defined in claim 17, wherein said means for accurately and reproducibly positioning the part of the patient'"'"'s anatomy to be tested with respect to said probe comprises an arm rest positioned near said dome such that when a portion of the patient'"'"'s hand rests over said exterior of said dome during the testing procedure, the patient'"'"'s arm may rest on said arm rest.

22. A testing module as defined in claim 21, wherein said arm rest comprises a first mechanism for adjusting said arm rest in a generally vertical rotational plane, a second mechanism for adjusting said arm rest in a generally horizontal rotational plane, and a height adjustment mechanism.