Pain measurment

• US 5,634,472 A
• Filed: 02/09/1995
• Issued: 06/03/1997
• Est. Priority Date: 02/09/1995
• Status: Expired due to Term

• Current Assignee: Puthalath K. Raghuprasad
• Original Assignee: Puthalath K. Raghuprasad
• Inventors: Raghuprasad, Puthalath K.
• Primary Examiner(s): Hindenberg, Max
• Application Number:
  US08/385,949
• Time in Patent Office: 845 Days
• Field of Search: 128/742, 128/744, 606/20, 606/22, 606/23, 606/25, 606/26
• US Class Current: 600/555
• CPC Class Codes: A61B 5/4824 Touch or pain perception evaluation A61B5/4821 takes precedence
• CPC Class Codes: A61B 5/483 by thermal stimulation

Abstract

A determination is quantitatively made of the severity of pain exhibited at a specified area on an animal by determining the magnitude of cooling required at the area of pain in order for the pain to be masked or made to disappear. The amount of cooling required for pain disappearance is considered directly related to the severity of the pain. Hence, by measuring the temperature depression required to mask the pain in a patient, an examiner can determine just how serious is the pain, and additionally provide guidance in the selection of a specific medicine. There is always some finite temperature depression required for true pain to disappear. Should the patient alleges that no pain relief is encountered by the cooling of the painful area, the examiner considers that the patient is faking his pain.

Claims

1. A method of determining the severity of pain at a selected area of a person'"'"'s body according to the following steps:

step 1;

preparing a dictionary of stored terms related to the magnitude of depression in temperature that is required at selected painful areas of a persons body in order to mask the pain and thereby apparently cause the pain to disappear;

step 2;

progressively cooling a heat transfer member below said person'"'"'s body temperature while contacting said selected area of said person'"'"'s body with said heat transfer member and thereby progressively lower the temperature at said area of pain;

step 3;

determining the magnitude of the depression in temperature that is required at said area of pain to mask the pain and apparently cause the pain to disappear;

step 4;

comparing the results of step 3 to said dictionary of stored terms and thereby determine the severity of the pain.

2. The method of claim 1 and further including the following steps:

step 5;

preparing a second dictionary of stored terms related to the selection of known medicines that are useful in alleviating pain as well as the dosage thereof according to a persons characteristics;

step 6;

comparing the results of step 4 to said second dictionary of stored terms and thereby determine the selection of a specific medicine as well as the dosage thereof.

3. The method of claim 1 and further including the following steps:

step 5;

providing stored data related to the selection and magnitude of dosage of a medicine that is indicated in order to treat persons of various physical characteristics;

step 6;

integrating the data of steps 4 and 5.

4. The method of claim 1 and further including the steps of:

step 5;

preparing another dictionary of stored terms related to the selection of a specific medicine according to pain severity and physical characteristics of a large number of people;

step 6;

comparing the magnitude of step 4 to the data of step 5 for the selection of a specific medicine as well as the dosage thereof.

5. The method of claim 1 and further including the steps of:

carrying out step 2 by compressing a gas to provide a liquid refrigerant;

expanding said liquid refrigerant into an expansion chamber that is connected in heat transfer relationship respective to said heat transfer member;

connecting a temperature sensor apparatus to determine the temperature of said heat transfer member; and

throttling the flow rate of said liquid refrigerant into said expansion chamber and thereby control the rate of heat transfer from said heat transfer member into said area of pain.

6. The method of claim 5 and further including the steps of:

determining the temperature depression achieved by said heat transfer member by attaching a temperature sensor to determine the temperature depression of said area of pain; and

comparing the depression in temperature of said area with said stored data to determine selection and dosage of an appropriate medicine.

7. The method of claim 1 and further including the steps of:

providing stored data related to the magnitude of the required dosage of a specific medicine that is indicated in order to treat various magnitudes of severity of pain represented by various magnitudes of temperature differentials; and

,

considering that the severity of pain is negligible when the patient alleges that no pain relief is encountered by the cooling of the painful area.

8. The method of determining the severity of pain exhibited at a specified area in a human body according to the following steps:

step 1. determining the magnitude of temperature differential required to relieve pain by reducing the temperature at said specified area until the pain is masked;

step 2. determine from the first recited temperature differential the selection of the proper medicine to prescribe for the human body by comparing the results of step 1 with a dictionary of stored terms related to the magnitude of temperature depression and the dosage and selection of the proper medicine to prescribe for a large population of humans to provide statistically sound data;

step 3. determining the appropriate medicine by cooling the area of pain until the pain disappears;

step 4. providing stored data related to the magnitude of the required dosage of a specific medicine that is indicated in order to treat various magnitudes of severity of pain represented by various magnitudes of temperature differentials.

9. The method of claim 8 and further including the steps of:

upon the magnitude of the temperature differential approaching a statistical unreal value, due to the human faking his pain and alleging that no pain relief is encountered by the cooling of the painful area, the severity of pain is considered to be nil.

10. The method of claim 8 and further including the steps of:

carrying out step 1 by compressing a gas to provide a liquid refrigerant;

expanding said liquid refrigerant into an expansion chamber that is connected in heat transfer relationship respective to a heat transfer member;

connecting a temperature sensor apparatus to determine the temperature of said heat transfer member; and

throttling the flow rate of said liquid refrigerant into said expansion chamber and thereby control the rate of heat transfer from said heat transfer member into said area of pain.

11. The method of claim 10 and further including the steps of:

determining the temperature depression achieved by said heat transfer member by attacking a temperature sensor to determined the temperature depression of said area of pain; and

comprising the depression in temperature of said area with said stored data to determined selection and dosage of an appropriate medicine.

12. The method of claim 11 and further including the steps of:

carrying out step 3 by cooling the painful area until the skin temperature approaches zero degrees centigrade, and should no pain relief be encountered, assume that the human is faking his pain.

13. A method of determining the severity of pain exhibited at a specified area on a human body, according to the following steps:

A. selecting a large number of humans having various different degree of pain at various different specified areas;

B. accumulating data related to the magnitude of temperature depression required for the specified area on the humans in order for the pain to substantially disappear;

C. storing the accumulated data of step B to provide a dictionary of stored terms related to pain severity vs the magnitude of temperature depression at the specified area;

D. determining the magnitude of temperature differential required to relieve pain by reducing the temperature at said specified area on the human body until the pain is masked; and

then selecting a medicine appropriate for treatment of said severity of pain exhibited at said specified area on said human body;

E. transferring the selected medicine to the human body, thereby determining the severity of pain and the appropriate medicine for optimum treatment of the area of pain in order that pain relief is achieved.

14. The method of claim 13 and further including the steps of:

carrying out step D by cooling the painful area until the skin temperature approaches zero degrees centigrade, and should no pain relief be encountered, assume that the human is faking his pain.

15. The method of claim 14 and further including the steps of:

cooling the area to a low temperature by applying a device having means to be cooled to the area of pain and depressing the temperature of the area in order to relieve pain and determining from the magnitude of the depressed temperature the selection of the proper medicine to prescribe for the human.

16. The method of claim 13 and further including the steps of:

considering that the severity of pain is negligible when the human alleges that no pain relief is encountered by the cooling of the painful area.

17. The method of claim 16 and further including the steps of:

carrying out step B by compressing a gas to provide a liquid refrigerant;

expanding said liquid refrigerant into an expansion chamber that is connected in heat transfer relationship respective to said heat transfer member;

connecting a temperature sensor apparatus to determine the temperature of said heat transfer member; and

throttling the flow rate of said liquid refrigerant into said expansion chamber and thereby control the rate of heat transfer from said heat transfer member into said area of pain.