Abstract:
A pain relieving device includes a plurality of sources of pain relieving modalities selected from the group consisting of massage, vibration, acupressure and electric stimulation; and means for applying at least two of the modalities simultaneously to a selected point at the upper body region of a person.

Description:
This is a Continuation of application Ser. No. 07/800,164 filed on Nov. 27, 1991, now abandoned. 
    
    
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a tension headache reliever, and more particularly to a tension headache reliever that does not require the use of pharmaceuticals. 
     2. Description of the Prior Art 
     Headaches are attributable to many factors. Tension, stress, concerns about business or family problems, all cause headaches. Eye strain, sinuses, colds and flu can also cause headaches as well as overexposure to the sun, excessive consumption of alcohol, loud noises and high air or water pressure. Headaches can occur for several hours or last for many days, e.g. migraine headaches. 
     Presently, there are various pharmaceutical headache and pain relievers available to the public that have met with varying degrees of success in curing headaches. However, the pharmaceutical products are deficient for a number of reasons. Many of the pharmaceutical products are not effective in relieving certain types of headaches. They do not relieve the same type of headaches in different people. People often build up an immunity to these pharmaceutical products rendering them ineffective. Other people are allergic to these pharmaceutical products or cannot or do not want to ingest the chemicals in these pharmaceutical products. Also, the pharmaceutical products are aimed at curing generalized pain only, and cannot cure particular areas of pain. 
     Alternative methods have been developed to relieve headaches without the use of pharmaceutical products. One of these methods includes electric stimulation, i.e., applying pulses of electric energy at low current levels to the parts of the body that emanate pain. 
     Most electric stimulators have carbon rubber electrodes which are reusable and can be fixed to the skin with adhesive tape and are adaptable to the contour of the body region to be stimulated. The prior art recommends placement of electrodes over the occipital nerves with an intensity of stimulation high enough to produce paresthesia from occiput to vertex. If this is not successful, electrodes are placed over the forehead or temples. 
     To apply an electric stimulus the prior art teaches the use of TENS (Transcutaneous Electrical Nerve Stimulation) devices. TENS devices deliver electric bursts through the skin to cutaneous (surface) and afferent (deep) nerves to control pain. The use of a TENS device is an advancement in the art because of how it operates; it is able to stimulate a specific nerve to ease a specific point of pain. 
     There are two major theories explaining how electric stimulation relieves pain. According to the &#34;gate control theory,&#34; pain and non-pain impulses are sent to the brain from the local nervous system. These pulses travel through the cutaneous nerves to the deeper afferent nerves and then to the spinal cord and brain. Along the path are many areas referred to as &#34;gates.&#34; The gates control which impulses are allowed to continue to the brain. These gates prevent the brain from receiving too much information too quickly. Since the same nerve cannot carry a pain impulse and a non-pain impulse simultaneously, the stronger, non-pain impulse (from the TENS device) &#34;controls the gate.&#34; 
     According to the second theory, TENS stimulation encourages the body to produce natural pain killers called endorphins. These chemicals interact with receptors, blocking the perception of pain, much as the pharmaceutical drug morphine does, but without the side effects associated with morphine. 
     Most TENS units can vary stimulus intensity, pulse rate, and pulse width. TENS devices can be powered by a single 9-volt battery. Modern TENS devices offer a dual or multichannel system for use with four or more electrodes. These units permit the simultaneous treatment of many points within a painful area which is particularly useful if that area is wide or the pain is radiating. These units also provide a variety of possible electrode arrangements which may be useful in treating certain pain. 
     The prior art also teaches devices utilizing, in addition to electric stimulus, acupressure, massage and vibration therapies to relieve pain. Acupressure involves applying physical pressure against specific parts of the body to achieve some degree of treatment or pain relief. However, these devices are complicated to operate and require an attending therapist during treatment. Further, none of the prior art devices combine the salient features of each of these approaches to relieve pain, nor do they enable such approaches to be administered simultaneously. 
     SUMMARY OF THE INVENTION 
     Accordingly, it is an object of the present invention to provide a tension headache reliever to relieve headache pain without using pharmaceuticals. 
     Another object is to provide such a tension headache reliever that applies different approaches, simultaneously, to relieve the same condition, i.e. combination therapy. 
     A further object is to provide such a tension headache reliever to relieve headache pain by using a combination of electric stimulation, acupressure and vibration and massage therapy. 
     It is also an object to provide such a tension headache reliever that provides spinal cord stimulation. 
     It is another object to provide such a tension headache reliever that applies combination therapy without the need for an attending therapist. 
     It is a further object to provide such a tension headache reliever that stimulates specific parts of the body to ease specific points of pain. 
     It is still a further object to provide such a tension headache reliever that is easy to operate, manufacture and repair. 
     It has been found that the above and other objects of the present invention are attained in a tension headache reliever including a plurality of sources of pain relieving modalities selected from the group consisting of massage, vibration, acupressure and electric stimulation; and means for applying at least two of the modalities, simultaneously, to a selected point at the upper body region of a person. 
     Preferably, the means for simultaneously applying the modalities includes fulcrum means adapted to support and be in contact with the person&#39;s head region at an area generally below the occipital condyles when the person is in the supine position. 
     In a preferred embodiment, the pain relieving device includes a fulcrum means for supporting and contacting a person&#39;s head region at an area generally below the occipital condyles when the person is in the supine position; means for applying electric current to the fulcrum means to electrically stimulate the area generally below the occipital condyles; means for reciprocating the fulcrum means to massage the area generally below the occipital condyles; means for reciprocating the persons head region on the fulcrum means to massage the area generally below the occipital condyles; and means for vibrating the fulcrum means to vibrate the area generally below the occipital condyles. 
     Preferably, the fulcrum means is mounted on a moveable carriage. The means for reciprocating the fulcrum means, includes means for reciprocating the carriage along a path generally parallel to the person&#39;s spine to massage the area generally below the occipital condyles. The means for reciprocating the person&#39;s head on the fulcrum means includes means for reciprocating the head along an arcuate path generally perpendicular to the person&#39;s spine to massage the area generally below the occipital condyles. 
     In a preferred embodiment, the electric current applying means includes a TENS device, a MENS device or an electro-acupuncture device, and the pain relieving device further includes means for applying electric current to electrically stimulate the frontal region and the shoulder region of the person. 
     In a preferred embodiment, the fulcrum means includes a first occipital electrode and a second occipital electrode. Preferably, the electric current applying means to stimulate the frontal region includes a first frontal electrode and a second frontal electrode adapted to generally be in contact with the frontal region of the person&#39;s head, and the electric current applying means to stimulate the shoulder region includes a first shoulder electrode and a second shoulder electrode adapted to be in contact with the area generally above the shoulder blades of the person. 
     Preferably, the pain relieving device further includes means for applying electric current between the first occipital electrode and the second frontal electrode; means for applying electric current between the first occipital electrode and the second shoulder electrode; means for applying electric current between the first occipital electrode and the second frontal and the second shoulder electrodes; or means for applying electric current between the first and second occipital electrodes and the first and second shoulder electrodes. The fulcrum means include means for preventing the person&#39;s hair from interfering with the electric current. Preferably the fulcrum means is in the form of a semicircular coil. 
     In a preferred embodiment, the pain relieving device includes a movable carriage; a first electrode and a second electrode in the form of coils mounted on the carriage, the electrodes adapted to support a person&#39;s head when the person is lying in the supine position, and adapted to be in contact with the general area of the person&#39;s head below the occipital condyles; a strap for encircling the forehead of the person; means for reciprocating the strap such that the person&#39;s head reciprocates along an arcuate path in a direction perpendicular to the person&#39;s spine; means for reciprocating the carriage in a direction generally parallel to the patient&#39;s spine; and means for applying an electric current to the electrodes to provide electric stimulation. 
     Preferably, the strap includes a first frontal electrode and a second frontal electrode adapted to be in contact with the frontal region of a person&#39;s forehead. The pain relieving device further includes a first shoulder electrode and a second shoulder electrode adapted to be in contact with the region generally above the shoulder blades of the person. 
     In a preferred embodiment, the pain relieving device further includes means for applying the electric current between the general areas of the patient&#39;s upper body selected from the group consisting of the area below the occipital condyles, the frontal region and the area above the shoulder blades. 
     Preferably, the pain relieving device further includes means for applying the electric current between the first occipital electrode and the second frontal electrode; means for applying the electric current between the first occipital electrode and the second shoulder electrode; means for applying the electric current between the first occipital electrode and the second frontal and the second shoulder electrodes; or means for applying electric current between the first and second occipital electrodes and the first and second shoulder electrodes. 
     In a preferred embodiment, the pain relieving device for reciprocating the strap includes a crank means driven by a motor operatively engaged to the strap. Preferably, the crank means rotates between a first position that pulls the strap in a generally downward direction, and a second position that releases the strap from being pulled in the downward direction. The pain relieving device further includes a spring-biased support element for the person&#39;s head and the person&#39;s head forces the spring-biased element into compression when the crank means rotates into the first position. The spring-biased element forces the person&#39;s head in a generally upward direction when the crank means rotates into the second position. 
     In a preferred embodiment, the means for reciprocating the carriage includes a rotatable shaft driven by a motor and an eccentric cam means mounted on the rotatable shaft. Preferably, the eccentric cam means is operatively engaged to a piston means coupled to the carriage, and the piston means includes a rod means operatively engaged to the eccentric cam means at one end and coupled to the carriage at the opposite end. In a preferred embodiment, the pain relieving device is used in connection with a light and sound machine. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     For the purpose of illustrating the invention, there is shown in the drawings an embodiment which is presently preferred; it being understood, however, that the invention is not limited to the precise arrangements and instrumentalities shown. 
     FIG. 1 is a top plan view of the tension headache reliever of the present invention. 
     FIG. 2 illustrates the occipital and shoulder points on a patient where electric stimulation can be applied. 
     FIG. 3 is the tension headache reliever of FIG. 1 wired to a four channel electric stimulation applying device. 
     FIG. 4 is a perspective view of an alternative embodiment of the tension headache reliever of the present invention. 
     FIG. 5 is a side elevational view of the tension headache reliever of FIG. 1 in use by a patient in the supine position. 
     FIG. 6 is an alternative embodiment of the tension headache reliever of FIG. 1. 
     FIG. 7 is an alternative embodiment of the tension headache reliever of FIG. 1. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Referring now to the drawings wherein like numerals indicate like elements, there is shown in FIG. 1 a tension headache reliever 10. The tension headache reliever 10 functions as an applied modality in physical therapy or a physician&#39;s office with a patient lying supine on a treatment table, not shown. It provides four modes of stimulation to relieve headache pain. The four modes of stimulation are massage, vibration, acupressure and electric stimulation. 
     Referring now to FIGS. 1, 3, the tension headache reliever 10 includes a base portion 12, a mobile carriage unit 14, and a massage apparatus 16 mounted thereon to provide the acupressure, massage and vibration modes of stimulation. To provide the electric mode of stimulation, the tension headache reliever 10 includes a left coil occipital electrode 20 and a right coil occipital electrode 22 mounted on the mobile carriage unit 14, a left dome shoulder electrode 24 and a right dome shoulder electrode 26, and a left frontal electrode 28 and a right frontal electrode 30 mounted on a forehead electrode strap 32. As will be explained more fully below, the occipital electrodes 20, 22 allow any combination of the aforementioned modalities, namely, massage, vibration, acupressure and electric stimulation, to be administered simultaneously. 
     The left occipital electrode 20 and the right occipital electrode 22 are in the form of semicircular coils. It is recommended that each electrode be approximately one and five-eighths inches wide, and be made up of approximately ten one-eighth inch copper wires. The left occipital electrode 20 and the right occipital electrode 22 are to be spaced approximately three-quarters of an inch apart. The electrodes can also be made of any of the known materials and by any of the known methods, e.g. molded carbon rubber, just so long as the electrodes are of a similar size and configuration to the electrodes 20, 22. 
     The massage apparatus 16 is powered by two electric motors 34 and 36 which receive power from a 12 volt battery, not shown. Each motor 34, 36 controls a different massage motion. The motor 34 provides a rocking motion to a patients head along an arcuate path generally perpendicular to the patient&#39;s spine, as the patient lies in a supine position on the tension headache reliever 10 as shown in FIG. 5. The motor 36 provides a back and forth or low frequency vibration motion to the patient&#39;s head along a path generally parallel to the patient&#39;s spine. 
     In the supine position, as shown in FIG. 5, the head is made to rest against a spring-biased head return bar 38 (FIG. 3), the occipital electrodes 20, 22 which are positioned suboccipital fossa bilaterally or below the occipital condyles of the patient&#39;s head shown at points 40 and 42 of FIG. 2 (the suboccipital region), and a centering inion placement post 43 which is positioned below the inion, not shown, and between the occipital condyles 40, 42 of the patient&#39;s head. The patient&#39;s body weight against the occipital electrodes 20, 22 and the inion post 43 generates acupressure. The inion post 43 is spring-biased to comfort the patient&#39;s head. The head return bar 38 can be padded for added comfort. 
     To achieve the rocking motion massage, the forehead electrode strap 32 is first placed around the patient&#39;s forehead when lying in the supine position, as shown in FIG. 5. The forehead electrode strap 32 should be adjustable to fit a variety of head sizes. 
     The motor 34 causes the forehead electrode strap 32 to rock the patient&#39;s head using the occipital electrodes 20, 22 as a fulcrum. This rocking motion causes the occipital condyles 20, 22 to massage the suboccipital region of the patient&#39;s head. The movement of the forehead electrode strap 32 also serves to massage the frontalis muscle over the forehead. 
     An attachment piece 44 connects the forehead electrode strap 32 to a rotating shaft 46 which is coupled to, and driven by, the motor 34. The rotating shaft 46 includes a crank or U-shaped portion 48 which attaches the attachment piece 44 to the rotating shaft 46. When the motor 34 is turned on, it drives the rotating shaft 46 so that the U-shaped portion 48 rotates between an upper position and a lower position. When the U-shaped portion 48 is in the lower position, it causes the forehead electrode strap 32 to pull the patient&#39;s head backwards, momentarily urging the spring element of the head return bar 38 into compression. When the U-shaped portion rotates into the upper position, it releases the forehead electrode strap 32. The head return bar 38, no longer in compression, then urges the patient&#39;s head forward to return to its normal supine position to complete one cycle. This cycle is repeated continuously until relief is achieved. It is recommended that the frequency of the cycle be between 0-50 cycles per minute. A speed controller, 126, can be used by the patient to vary the speed of the motor 34 to achieve the desired frequency. 
     To achieve the back and forth or low frequency vibration motion massage, the motor 36 imparts back and forth movement to the mobile carriage unit 14, causing the occipital electrodes 20, 22 to massage the suboccipital region of the patient&#39;s head. The back and forth motion can be provided to the patient&#39;s head when lying in the supine position, as shown in FIG. 5, simultaneously with, or independent from, the rocking motion that is provided by the motor 34. 
     The mobile carriage unit 14 includes wheels 50 which ride on carriage tracts 52 mounted on the base portion 12. The motor 36 imparts movement to the mobile carriage unit 14 using a piston-like arrangement. This configuration includes a rotating shaft 54 connected to, and driven by, the motor 36. The rotating shaft 54 includes an eccentric cam 56 coupled thereto which operatively engages a piston 58. The eccentric cam 56 preferably includes two or three lobes, not shown. The piston 58 is coupled to the carriage unit 14 by a U-shaped coupler 60. 
     When the motor 36 is turned on, the eccentric cam 56 is caused to rotate with the rotating shaft 54 until a lobe of the cam 56, not shown, engages the piston 58, which in turn pushes the carriage unit 14 away from the motor 36. The wheels 50 and the carriage tracts 52 should be so configured to allow longitudinal, but not lateral, movement. The carriage unit 14 is displaced approximately one-half centimeter. The movement of the carriage unit 14 places a spring-bias element or spring return 62 in tension. 
     When the rotation of the rotating shaft 54 disengages the lobe of the eccentric cam 56 from the piston 58, the piston 58 no longer pushes the mobile carriage unit 14; and, the spring return 62, no longer in tension, pulls the carriage unit 14 back to its original position to complete one cycle. The rotation of the rotating shaft 54 repeats the cycle until relief is achieved. It is recommended that the frequency of the cycle be between 0-150 cycles per minute. A speed controller, 128, can be used by the patient to vary the speed of the motor 36 to achieve the desired frequency. 
     For additional therapeutic effect, the mobile carriage unit 14 can be fitted with an additional electric motor, not shown, to impart high frequency vibration motion to the carriage unit 14, and thus to the suboccipital region of the patient&#39;s head. The electric motor can be a simple vibration motor including an eccentric cam mounted on the shaft of the motor. Preferably, the motor should rotate approximately 3,000-11,000 rotations per minute (rpms), although other motors of varying rpms can be used. This provides a high frequency vibration massage to the suboccipital region of the patient&#39;s head in addition to the much lower frequency back and forth vibration massage provided by the motor 36. A speed controller, 130, can be used by the patient to vary the speed of the motor and thus the intensity of the vibration. 
     The preferred embodiment of the tension headache reliever 10 uses electric stimulation in combination with the above three modes of stimulation, namely massage, acupressure and vibration to achieve pain relief. Preferably, a TENS device is used to provide the electric stimulation, although it will be appreciated by those skilled in the art that other devices can be employed such as a MENS (Microvolt Electrical Nerve Stimulation) device or an electro-acupuncture device. A MENS device is an improvement over a TENS device. A MENS device provides an electric pulse approximately three orders of magnitude less than a TENS device, i.e., less voltage. The MENS device tends to be more physiologic in that it mimics a bodies&#39; electric signals. 
     Electric stimulation is provided when the patient lies in the supine position as described above and as shown in FIG. 5. The forehead electrode strap 32 is adjusted so that the left frontal electrode 28 and the right frontal electrode 30 are placed over the frontal area of the patient&#39;s head, i.e., any area of the forehead up to the hairline. 
     The left occipital electrode 20 and the right occipital electrode 22 are positioned suboccipital fossa bilaterally or below the occipital condyles as shown at points 40, 42 of FIG. 2. The coil design of the occipital electrodes 20, 22 allows transmission of therapeutic modalities while avoiding the interference of hair. 
     The left dome shoulder electrode 24 and the right dome shoulder electrode 26 are placed in contact with the patient&#39;s back, positioned at the tender points 64, 66 above the shoulder blades (superomedial portion) as shown in FIG. 2. It is recommended that the shoulder electrodes 24, 26 be dome shaped and measure approximately one and one-half inches wide and one inch high. The surface area of the shoulder electrodes 24, 26 should equal the surface area of the occipital electrodes 20, 22. 
     The placement and configuration of the forehead electrodes 28, 30, the occipital electrodes 20, 22 and the shoulder electrodes 24, 26 avoid the need for any gels to be applied between the electrodes and the area of the patient&#39;s body to be stimulated. This is because they are sufficiently pressed against the patient&#39;s body to induce electric contact. The forehead electrode strap 32 presses the forehead electrodes 28, 30 against the patient&#39;s frontal area, and the weight of the patient&#39;s body presses the occipital electrodes 20, 22 and the shoulder electrodes 24, 26 against the patient&#39;s suboccipital and shoulder areas, respectively, when the patient is in the supine position. 
     It should be noted that the placement of the left and right frontal electrodes 28, 30, the left and right occipital electrodes 20, 22 and the left and right dome shoulder electrodes 24, 26 is not to be specifically limited as described above. For example, while the left and right occipital electrodes 20, 22 are recommended to be positioned below the occipital condyles, the occipital condyles are bone landmarks only. Electrode placement necessarily includes all of the nerves and muscles emanating and traversing the area and the acupressure meridians thereto. 
     In the preferred embodiment of the invention, the electrodes of the tension headache reliever 10 are wired to a four channel TENS device 67, as shown in FIG. 3, by using a bipolar plug or by any of the known methods. The wiring for the electrodes is the left frontal electrode 28 to the right occipital electrode 22 for the first channel. The right frontal electrode 30 to the left occipital electrode 20 for the second channel. The right occipital electrode 22 to the left shoulder electrode 24 for the third channel. And the left occipital electrode 20 to the right shoulder electrode 26 for the fourth channel. 
     In this embodiment, pulsing current leaves the TENS device 67 through the first channel and travels through the left frontal electrode 28 and into the head region where the electrode 28 is positioned. The current then travels through the patient&#39;s head and is received by the right occipital electrode 22. The pulsing current then returns to the TENS unit to complete the circuit. For the second channel, the pulsing current leaves the TENS unit 67, travels through the right frontal electrode 30 and into the head region where the electrode is positioned. The current then travels through the patient&#39;s head and is received by left occipital electrode 20. The pulsing current then returns to the TENS unit to complete the circuit. For the third channel, the pulsing current leaves the TENS unit 67 and travels through the right occipital electrode 22 into the occipital region of the patient&#39;s head which is in contact with the electrode 22. The current then travels through the patient&#39;s head and body and is received by the left shoulder electrode 24. The pulsing current then returns to the TENS unit to complete the circuit. For the fourth channel, the pulsing current leaves the TENS unit 67 and travels through the left occipital electrode 20 into the region of the patient&#39;s head which is in contact with the electrode 20. The current then travels through the patient&#39;s head and body and is received by the right shoulder electrode 26. The pulsing current then returns to the TENS unit to complete the circuit. The polarities in any or all of the channels can be reversed which has been found to have a therapeutic effect. 
     As the left occipital electrode 20 and the right occipital electrode 22 are positioned below the occipital condyles as shown at points 40, 42 of FIG. 2, transcranial nerve stimulation is not provided. To provide transcranial stimulation, the head return bar 38 can be fitted with cranial electrodes of the same design as the left occipital electrode 20 and the right occipital electrode 22. The cranial electrodes can be wired to the frontal electrodes 28, 30 or can be wired to each other. Transcranial nerve stimulation can also be achieved by wiring the left frontal electrode 28 directly to the right frontal electrode 30. 
     The cross-wire arrangement, e.g. the right occipital electrode 22 to the left dome shoulder electrode 24 of the preferred embodiment provides beneficial therapeutic effect. Among others, it lowers the patient&#39;s skin resistance which allows for better penetration of electric current through the skin. It also provides spinal cord stimulation which will provide, among others, cranial and cervical spinal stimulation as well as relieve tension headaches. 
     Alternative arrangements have also been found to provide beneficial therapeutic effects. Exchanging or reversing the shoulder electrodes 24, 26, e.g., wiring the left occipital electrode 20 to the left shoulder electrode 24, rather than the right occipital electrode 22 to the left shoulder electrode 24 for the third channel, provides more direct anatomical stimulation of the trapezius and levator scapula. This straight-wire, as opposed to cross-wire, arrangement benefits patients having more muscular pathologies rather than spinal pathologies. Thus, straight-wire electric stimulation of the splenius capitis and cervical multifidus muscles will relieve spasm to benefit some patients, but will not be effective to treat an ailment having a spinal pathology such as spinal stenosis. 
     Four channel TENS devices allow the patient to have the most control over the intensity at each of the six active electrodes. Four channels also allow variance for different degrees of tenderness, right to left, top to bottom, and front to back. 
     As most commercially available TENS and MENS devices have two channels and electro-acupuncture devices have three channels, two and three channel wiring configurations can be used as alternative embodiments. Each wiring configuration treats a different area of the head and spine to relieve the pain. 
     Referring now to FIG. 6, there is shown an alternative embodiment of the tension headache reliever 10 employing a three channel TENS device 68. The wiring is a left frontal electrode 70 to a right coil occipital electrode 72 for channel one. A left coil occipital electrode 74 to a right frontal electrode 76 for channel two. The combination of the left occipital electrode 74 and the right occipital electrode 72 to the combination of a left shoulder electrode 78 and a right shoulder electrode 80 for channel three. 
     Referring now to FIG. 7, there is shown the alternative embodiment of the tension headache reliever 10 employing a two channel TENS device 82. The wiring is a right occipital electrode 84 to the combination of a left frontal electrode 86 and a left shoulder electrode 88 for channel one. Channel two is a left occipital electrode 90 to the combination of a right frontal electrode 92 and a right shoulder electrode 94. 
     The three channel wiring configuration of FIG. 6 lacks adjustability right to left between the occipital electrodes 72, 74 and the shoulder electrodes 78, 80, and lacks a crossed or interferential stimulation pattern between the occipital electrodes 72, 74 and the shoulder electrodes 78, 80. This is because in channel three, both the left occipital electrode 74 and the right occipital electrode 72 are wired to both the left shoulder electrode 78 and the right shoulder electrode 80. 
     The two channel wiring configuration of FIG. 7 has independent right to left stimulation, i.e., the right occipital electrode 84 is wired to both the left frontal electrode 86 and the left shoulder electrode 88, and the left occipital electrode 90 is wired to both the right frontal electrode 92 and the right shoulder electrode 94. This wiring scheme requires that the surface area of the frontal electrodes 86, 92 and the shoulder electrodes 88, 94 be decreased so that the surface area of each occipital electrode, e.g., occipital electrode 90, equals the combined surface area of the corresponding frontal and shoulder electrodes e.g., frontal electrode 92 and the shoulder electrode 94. Otherwise the electrodes will disperse the electric charge and electric stimulation will not be realized. The surface area stimulation adjustments between the frontal electrodes 86, 92 and the shoulder electrodes 88, 94 can be accomplished by covering portions of the electrode with insulation tape. 
     In use, the patient can operate the tension headache reliever 10 by himself without an attending therapist. The patient has control over using all or any combination of the four modes of therapy, namely, electric acupressure, vibration and massage stimulation. The patient also has control over the intensity of each of the modes of therapy. It is recommended that the tension headache reliever 10 be used for approximately forty-five minutes to one hour, although for minor pair relief fifteen minutes is adequate. Of course the exact time of use will vary from patient to patient depending on the severity of the pain to be relieved, and the intensity and combination of the therapies used. 
     Referring now to FIG. 4, there is shown an alternative embodiment of the tension headache reliever 10 consisting of a transportable unit 96. The transportable unit 96 includes a base portion 98 having a surface 100 that can lay flat against a firm support such as a table, seat back or a wall. The base portion 98 includes a left coil occipital electrode 102 and a right coil occipital electrode 104 mounted thereon, separated by a centering inion placement post 106. The construction of the occipital electrodes 102, 104 and the centering inion placement post 106 are similar in construction to the occipital electrodes 20, 22 and the inion post 43 of the tension headache reliever 10 described above. 
     Attached to the base portion 98 is a forehead electrode strap 108 and a suspension strap 110 which extends from the base of the inion post 106. The suspension strap 110 supports the transportable unit 96 to the patient&#39;s head. 
     The forehead electrode strap 108 includes a first member 112 and a second member 114 extending from opposite ends of the base portion 98. The forehead electrode strap 108 also includes an electrode strip 116. The electrode strip 116 includes a substrate 118 having a left frontal electrode 120 and a right frontal electrode 122 mounted on one surface and attachment means 124 mounted on the opposite surface which is capable of being attached to the inside surface of the end portions of the first member 112 and the second member 114 of the forehead electrode strap 108. 
     Preferably, the electrode strip 116 is removably attached to the first member 112 and the second member 114 by a hook and loop fastener that is sold under the trademark VELCRO, although it is recognized that other means can be utilized. The attachment means 124 would then include the loop portion of the VELCRO fastener and the inside surface of the end portions of the first member 112 and the second member 114 would be the hook portion. The aforementioned construction of the forehead electrode strap 108 can also be used for the forehead electrode strap 32 of the tension headache reliever 10. 
     To provide vibration stimulation, the base portion 98 is fitted with a simple vibration motor, not shown, that achieves vibration by an eccentric cam, similar to the simple vibration motor fitted to the mobile carriage unit 14 of the tension headache reliever 10 discussed above. 
     To provide electric stimulation, the left occipital electrode 102, the right occipital electrode 104 and the left frontal electrode 120 and the right frontal electrode 122 are wired to a two channel portable TENS device than can be carried around in a person&#39;s pocket. The electrodes can be cross-wired or straight wired. Preferably, the transportable unit 96 is cross-wired so that the right frontal electrode 122 is wired to the left occipital electrode 102 for channel one, and the right occipital electrode 104 to the left frontal electrode 120 for channel two. Other wire configurations can be used, e.g., the right frontal electrode 122 to the right occipital electrode 104 for channel one, and the left occipital electrode 102 to the left frontal electrode 120. 
     In use, a person wears the transportable unit 96 by strapping the forehead electrode strap 108 around the person&#39;s head so that the left frontal electrode 120 and the right frontal electrode 122 contact the patient&#39;s forehead. The left occipital electrode 102 and the right occipital electrode 104 are positioned suboccipital fossa bilaterally or below the occipital condyles of the patient&#39;s head as shown at points 40, 42 of FIG. 3. The inion placement post 106 is positioned below the inion, not shown, between the occipital condyles 40, 42. 
     The suspension strap 110 extends over the top of the person&#39;s head and should be of a sufficient length to removably attach to the attachment means 124 of the electrode strip 116. Preferably the end portion of the suspension strap 110 includes the hook portion of the VELCRO fastener which allows it to mate with the loop portion of the VELCRO fastener of the attachment means 124. The transportable unit 96 can also be fitted with a hat attachment, not shown, to secure it to the patient&#39;s head. 
     The first member 112 and the second member 114 of the forehead electrode strap 108 should be of a sufficient length to receive a variety of head sizes. For larger heads, the first and second members 112, 114 are adjusted so that they are farther apart on the attachment means 124 of the electrode strap. For smaller heads, the first and second members 112, 114 are adjusted so that they are closer together. 
     The construction of the transportable unit 96 allows the patient to administer acupressure or mechanical massage to himself. This is accomplished by the patient first pressing the base portion 98 against a firm support such as a table, seat back or a wall, and then by rolling and rocking his or her head and by leaning back in either the upright or supine position. 
     The tension headache reliever of the present invention relieves headache pain without using pharmaceuticals. It applies different approaches simultaneously to relieve the same condition, i.e. utilizes combination therapy. The tension headache reliever relieves pain by using a combination of therapies, namely electric, acupressure, vibration and massage stimulation. The cross-wiring arrangement provides spinal cord stimulation to additionally relieve pain having spinal pathologies. The tension headache reliever is easy to operate and can be operated without an attending therapist. It is also easy to manufacture and repair. 
     It should be realized that the tension headache reliever can also be utilized in combination with other methods or machines that are designed for pain relief or for relaxation in general. For instance, the tension headache reliever of the present invention can be used in combination with any one of a number of commercially available &#34;light and sound machines&#34; 132, FIG. 1 which utilize pulsating lights and sound for relaxation therapy. 
     Although the present invention has been described in relation to particular embodiments thereof, many other variations and modifications and other uses will become apparent to those skilled in the art. It is preferred, therefore, that the present invention be limited not by the specific disclosure herein, but only by the appended claims.