WO1991006340A1 - Apparatus and method for transcranial electrotherapy - Google Patents
Apparatus and method for transcranial electrotherapy Download PDFInfo
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- WO1991006340A1 WO1991006340A1 PCT/GB1990/001670 GB9001670W WO9106340A1 WO 1991006340 A1 WO1991006340 A1 WO 1991006340A1 GB 9001670 W GB9001670 W GB 9001670W WO 9106340 A1 WO9106340 A1 WO 9106340A1
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- signal
- electrode
- current
- pauses
- tcet
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/36014—External stimulators, e.g. with patch electrodes
- A61N1/36021—External stimulators, e.g. with patch electrodes for treatment of pain
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/02—Details
- A61N1/04—Electrodes
- A61N1/05—Electrodes for implantation or insertion into the body, e.g. heart electrode
- A61N1/0502—Skin piercing electrodes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/36014—External stimulators, e.g. with patch electrodes
- A61N1/36017—External stimulators, e.g. with patch electrodes with leads or electrodes penetrating the skin
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S607/00—Surgery: light, thermal, and electrical application
- Y10S607/90—Substance abuse therapy
Definitions
- This invention relates to the process now known as TCET (transcranial electrotherapy), that is to say the application of a series of electric signals of defined amplitude and duration across the head of a patient or a test animal by means of percutaneous electrodes generally attached to the external part of the ear.
- TCET transcranial electrotherapy
- TCET Transcutaneous Electrical Nerve Stimulation
- electro-acupunture TCET is particularly important in the control of chronic refractory pain, but is also important in treatment of addictive states.
- U. S. Patent 4 646 744 discloses the application of a signal comprising trains of pulses separated from other trains by off periods. Each of these trains comprises a packet of a certain number of individual pulses spaced temporally from other packets by off periods.
- the pulses are generally either DC or substantially symmetrical AC wave forms applied at a number of different frequencies, typically 10 Hz, 100 Hz, 25-30 Hz, 500 Hz. and 200 Hz.
- the pulse width that is to say the duration of a positive pulse from a zero value to a zero value, is typically 0.1 to 0.5 msec, although pulse widths of 1.5 msec are also mentioned.
- the signals have a current of several mA, an amperage of less than 100 mA being sufficient.
- the pulses are given in packets of consecutive pulses described as "trains" separated by off periods which can regularly spaced or which can be irregular and typically increasing in duration, e. g. in an arithmetical progression.
- trains separated by off periods which can regularly spaced or which can be irregular and typically increasing in duration, e. g. in an arithmetical progression.
- the typical overall duration of these series of trains is several days.
- the signal can be provided to the electrode with a very low current. It is highly desirable to use an operating current of only a few microamps, typically
- the operating current should be a factor of 10 -4 times the operating current suggested in the U. S. Patent.
- the low current signal can be provided by the simple procedure of using a signal generator working at a much higher current and then including in the circuit a defined high impedance to reduce the current to the required microamp levels.
- a signal is generated at from 2-4 volts and passed through a 180 kn resistance.
- the connecting leads are kept as short as possible, or are screened (if this is feasible).
- Long unscreened leads or, even worse, long screened but non-earthed leads) are found to act as aerials and pick up a large amount of ambient electro ⁇ magnetic radiation, thus delivering to the patient a large amount of "noise" along with the signal. This is at best unhelpful, and at worst positively harmful, apparently causing aggressive tendencies in rats and irritation or anxiety in humans.
- an electrode in the form of an ear clip generally comprising a bifurcated or generally U-shaped holder capable of being located around the ear lobe and supplied with a conicall pointed electrode needle arranged to press against the ear lobe located between arms of the U-shaped clip, the electrode being provided with adjustable means for controlling the pressure at which the point of the electrode presses into the outer layers of the skin; the electrode also being provided with an electrical connection to the signal generator.
- the clip is conveniently made of moulded plastic material, for example nylon or polyalkylene.
- the adjustable means for controlling the pressure is conveniently a transversely mounted screw device controlled by, for example, a knurled knob and the electrode is conveniently attached to the lead by a conventional crimped ferrule.
- a further important operating condition is that the overall net charge delivered to the patient should effectively total zero (i. e. the positive charge should balance the negative charge in an alternating current), but that the operating signal should effectively consist of pulses of positive current. This result can be achieved by using an AC waveform in which the positive pulse is relatively short and high, while the following negative pulse is relatively long and low, the "areas" of the pulses being equal. (This description refers to the conventional representation of pulses as voltage plotted against time).
- the positive pulse should have a duration of about 2-2.2 msec (although pulse width of 0.22 msec and 7 msec are also effective in some cases) and the negative pulse width should be 5-10 times as long e. g. about 7 times.
- the pulse width (pulse duration) must obviously be less than the reciprocal of the frequency and I find that for frequencies up to, say, 150 Hz a pulse width of 2.0 msec is optimal, while at a frequency of about 500 Hz a pulse width of 1 msec is optimal and at a frequency of about 2000 Hz a pulse width of less than 0.1 msec is optimal. If it is desired to use ultra high frequency (MHz) signals, the pulse width is undefined.
- a typical train should contain packets of 750 or 1000 individual pulses, i. e. packets of 75 or 100 seconds in duration, separated by pauses of about 10 seconds, for a total train duration of 1800-3600 seconds, e. g. 2400 seconds.
- the rest period between successive trains of this type should preferably be a minimum of 3 hours. I have found that this type of signal provides distinctly better results than either continuous operation or operation involving a series of packets and gaps continued for several days.
- the invention includes apparatus for generating the appropriate signal, as described above.
- Such apparatus may conveniently comprise any suitable electronic circuitry capable of providing an appropriate electrical signal e. g. that described in the abovementioned US Patent.
- it comprises digital analogue circuitry to gate the signals into the required conformation.
- Subjects receiving specific prescriptions including the 250 and 750 ppp delivered at 10 Hz find that their months become dry during treatment sessions of one hour duration. Furthermore, alcoholics receiving treatment to ameliorate the abstinence symptoms associated with the withdrawal of alcohol become dry mouthed and also exhibit pronounced hypoglycaemic responses. However, it is undesirable to let the patient drink during the treatment period, as tests are carried out on the saliva, which would be diluted by the water etc. It is now therefore recommended that the recipients of the treatment suck commercially available glucose tablets (generally containing approx. 3 g of the monosaccharide) as a salivation stimulant. One tablet is administered 15-20 min before commencement of therapy and thereafter at 30 min intervals upon the discretion of the supervising clinician.
- glucose tablets generally containing approx. 3 g of the monosaccharide
- Results are the mean +_SD of 6 rats in each group. Continuous mode ES administered at 10 Hz frequency, 2.0ms pulse width for a period of 1800 s. Noxious challenge: TFL determined with conductive heat challenge at 60 * C applied to the ventral surface.
- Results are the mean _+SD of 18 rats in each group.
- ES consisted of 25 s periods of stimulation separated by the pause periods indicated and administered for a total treatment time of 1800 s. Sham-treated animals were restrained for the corresponding period of time with electrodes inserted but no current was passed.
- Noxious challenge TFL determined with conductive heat challenge at 60 * C applied to the ventral surface.
- Results are the mean +_SD of 12 rats in each group.
- ES consisted of periods of 100 s stimulation separated by 10s pause periods administered for a total treatment time of 1800 s. Sham-treated animals were restrained for the corresponding period of time with electrodes inserted but no current was- passed.
- Noxious challenge TFL determined with conductive heat challenge at 60 "C applied to the ventral surface.
- Interrupted mode ES of 2.0ms pulse width signals at the current amplitude indicated consisted of periods of 100s stimulation separated by 10s pause periods administered for a total treatment time of 1800 s. Sham-treated animals were restrained for the corresponding period of time with electrodes inserted but no current was passed.
- Noxious challenge TFL determined with conductive heat challenge at 60'C applied to the ventral surface. * Significantly different (P ⁇ 0.05) from sham-treated value by unpaired Student' s t test.
- Results (in s) are the mean _+SD for numbers of rats in parentheses.
- Noxious challenges TFL determined with conductive heat challenge at 60'C applied at the ventral surface.
- Results are the mean _+SD for numbers of rats given in parentheses.
- Continuous mode ES identical in all respects to interrupted, except devoid of pauses. Sham-treated (with electrodes inserted but no current passed). Basal rats were killed after brief restraint ( ⁇ 300s) for antinociceptive testing by the TFL test. TFL determined with conductive heat challenge at 60'C applied to the ventral surface after which the rats were killed and the blood collected.
- the response to an acute painful challenge comprising either noxious dry heat to the tail, noxious wet heat to the tail or an intraperitoneal injection of hyper onic saline was compared with that of rats sham-treated for the similar time period and with basal (time 0) treatment.
- Rats were addicted to morphine by implantation of miniature pumps loaded with the drug for periods varying upto 14 days. The pumps were removed and 24 hr later the abstinence effects were compared in rats receiving electrostimulus with sham-treated animals.
- Rats receiving chronic restraint stress, in some instances after prior periods of isolation stress are compared.
- the optimal number of pulses per packet (ppp), and pause between succeeding packets (Dp), was determined by comparing the efficacy of the current administered at either 64, 128, 250, 500, 750, 1000, 1250, 1500, 1750, 2000, 2250, 2500 ppp with pauses (Dp) of 1, 2, 5, 10, 15, 20, 25, 50 and 100 sec between succeeding packets.
- a prescription delivering 250 ppp and 10 sec Dp is therapeutically useful in providing pain relief characterised by a general feeling of drowsiness/euphoria.
- the signal may be administered continuously (rather than for a given period of time e. g. 60 min) and is particularly useful for pain control during the late evening and throughout the night.
- Both these 250 ppp prescriptions decrease ACTH levels while various endogenous opioids including 3-endorphin (BE) are elevated in the blood.
- a prescription comprising of 750 and 1000 ppp (750 providing a quantitatively greater effect for the majority of subjects) with Dp 10 sec is highly efficient as a broad range analgesic. It is especially useful for inflammatory pain and where more than one type of diverse pain is present simultaneously.
- This "750" prescription enhances mood and produces relaxation without drowsiness.
- This prescription is particularly useful when administered at times when ACTH levels would be expected to be elevated for example for people on a normal 12 h light: dark cycle, this would be the early morning, post lunch time or under conditions of extreme stress or anxiety, including the anxiety associated with chronic pain conditions.
- This 750 prescription decreases the turnover rate of the neurotransmitter noradrenaline for a given period. Its action may be prolonged by administering the signal in trains comprising 3 complete (with 10 sec pause) packets separated by 10 min "off” periods. Such a signal may be administered all day during the "awake period”.
- both the 250 and especially the 750 ppp act by suppressing the neuronal punishment systems (see, e.g. , White and Rumbold, Psychopharmacology (1988) 95: 1-14).
- the 750ppp prescription inhibits the rate of noradrenaline and histamine turnover in the various brain regions, but stimulates histamine turnover in the adrenal glands where it is associated with the release of hormonal substances principally corticosterone and opioid peptide fragments which by feedback inhibition suppress the action of the central neurotransmitter associated with alarm or pain reactions.
- Various "mixed" prescriptions e.g. an alternating 250 ppp and 750 ppp pulse packet separated by 10 s pauses (administered in a 60 min train) have been found to be particularly effective for treating inter alia pain in the head region such as trigeminal neuralgia and TMJ (temparo-mandibular joint pain).
- the 250 ppp prescription is delivered at an amplitude of 30 ⁇ A the inhibition of the punishment systems is less evident and the efficacy of the signal owes more to a stimulation of the reward system of the brain (see, e. g. Wise, Pharmac. Ther. Vol 35 pp 227-263, 1987).
- the 250 ppp may be used at 10-12 or 30 ⁇ A to ameliorate the abstinence effects of withdrawal from other drugs of abuse, inhibition of the punishment systems is more important during the early treatment (detoxication) stages, whereas enhancing the reward system of the brain is of more benefit during the rehabilitation stage of treatment.
- the signal may be applied continuously (with no pauses) at 10-12 ⁇ A amplitude, 2.0msec positive pulse. At this frequency the signal may be used inter alia to promote sleep or hypnosis treatment.
- the signal should be administered at 200 or 1000 ppp with 10 sec Dp at 10-12 ⁇ A amplitude, 2.0msec positive pulse.
- Such a current may be administered inter alia to control pain by stimulating endogenous opioid activity but it is most felicitous in withdrawal from opiate drugs of abuse as described in example 5. This is because the current stimulates the action of the endogenous opioids which have been down regulated by the abuse of the exogenous substances.
- Both 1000 ppp at 10 sec Dp and 250 ppp at 100 sec Dp are antinociceptive and are particularly effective for ameliorating pain mediated via spinal processes. Unlike the 10 Hz prescriptions for pain relief, these prescriptions should only be administered for periods of up to 60 min with at least 180 min intervals before a succeeding stimulus, and preferable only one a day. In the early stages of detoxication from the effects of alcohol abuse, the 1000 ppp, 10 Dp prescription is administered for 24 hr basis. These prescriptions increase serotonergic activity and also stimulate histamine turnover. They decrease the narcotic effects of both barbiturates and alcohol. These prescriptions are delivered at 10-12 ⁇ A with a 1.0 ms positive pulse duration setting.
- this prescription prolongs the effect, for example on narcosis of hypnotic agents.
- This prescription may be used in the rehabilitation/- detoxication of subjects abusing hallucinogenic agents such as LSD.
- Prescriptions administered at a number of such frequencies stimulate the punishment centres of the neuronal systems.
- These prescriptions should be administered in packets lasting 100 sec interspersed with 10 sec for periods of not less than 20 or more than 40 min. The number of such cycles that may be applied to the recipient will depend upon the tolerance of the individual as the current does raise anxiety levels and can impair sleeping. Since these prescriptions stimulate both cholinergic activity and the level of ACTH release, these prescriptions could be of use in the treatment of conditions involving impairment of memory such as Alzheimer' s disease.
- the effect of ACTH is the principal mechanism by which such prescriptions may also be used to help smokers cease the practice without experiencing abstinence effects but generally the method described in example 4 is more appropriate.
- the stimulatory effect of these currents on ACTH may also be used therapeutically to decrease the sleeping time post-operatively following the use of narcotic agents. Examples to illustrate treatment
- a subject suffering from an inflammatory pain condition would be treated with a signal at 10-12 ⁇ A of positive pulse duration 2.0 msec. At 10Hz this would be delivered in packets of 750 ppp with 10 sec Dp for a period of 60 min between 10.00-12.00 h and 14.00-16.00 h daily until pain amelioration lasting >24 h is achieved (normally 4 or 5 days). After this time the treatment may be diminished to once daily, then once every two days, thence on demand.
- EXAMPLE 2 Chronic pain coupled with drug withdrawal problems when the subject ceases to use habituating drugs.
- the 750 ppp prescription described above may be used continuously after the subject awakens until (for most subjects on a 12 h light: dark cycle) 20. OOh. The individual would then receive 2 h of the continuous 0.1 Hz prescription also at 10-12 ⁇ A and 2.0 msec positive pulse duration, followed immediately by a signal of equal amplitude and duration, but delivered at 250 ppp 10 sec Dp. This signal would be administered for 1 h with two hours breaks between 1 h periods of treatment. This prescription would continue until the individual awakens on the following day when the treatment would revert to the original 750 ppp prescription.
- EXAMPLE 3 Chronic pain caused by lower back injury
- EXAMPLE 4 Amelioration of withdrawal effects in cigarette smokers who quit smoking.
- the minimal treatment to be administered is 60 min of a 200 ppp 10 sec Dp signal of amplitude 10-12 ⁇ A and positive pulse duration 2.0 msec, this treatment should be administered in the morning (before noon) period.
- the success of the treatment in aiding people to quit smoking increases if further treatment is administered 6 h later than the first. Generally the longer the treatment period the subjects experience the fewer (if any) abstinence effects are observed.
- Persons experiencing depressive symptoms should receive 40 min treatment with the same signal at 30 ⁇ A amplitude. This latter treatment should not be administered within 2 h of a previous treatment.
- This treatment to enable people to cease smoking should continue a minimum of 5 to a maximum of 7 days.
- the treatment should be administered with the appropriate behavioural modification therapy.
- EXAMPLE 5 Amelioration of abstinence symptoms during withdrawal of drugs of abuse (including alcohol) of addicted subjects.
- the treatment should still only be administered for 1 h in the morning and 1 h in the afternoon period. In between these treatments and up until 20. OOh the subject should receive trains of the 750 ppp prescription consisting of three packets separated by a 10 min train pause. After 20.
- the subject may be maintained during the sleep phase with either a 250 ppp, lOOsec Dp, 2.0msec positive pulse duration, 10 Hz, 10-12 ⁇ A amplitude or a continuous 0.1Hz prescription of positive pulse duration 2.0msec and 10-12 ⁇ A amplitude.
- the period that the treatments are administered will depend upon the stage of withdrawal from drugs of the subject and the quantity (and duration of abuse).
- This treatment represents the detoxication phase which would normally be expected to last no more than 3-5 days the recipient should be available for psychotherapy/counselling at the end of this phase.
- the subject should receive a further 7-10 days of a prescription delivered at 2 Hz, 200 ppp, Dp, 2.0msec positive pulse duration at an amplitude of 10-12 ⁇ A.
- This prescription should be administered for 60min periods alternating with 60 min periods when no treatment is applied. After 7 days this treatment should be scaled down so that the subject receives no more than 2 treatments per day. 14 days after beginning the original treatment, the subject should not exhibit any abstinence symptoms if no treatment is administered at all.
- This latter prescription may be administered on a no more than twice a day basis to aid in the psychological rehabilitation process over the succeeding months however.
- a prescription delivered at 133 Hz, 10-12 ⁇ A amplitude, 2.0msec positive pulse duration comprising packets of 2500 ppp and 10 sec Dp is particularly effective during the daylight hours.
- corticosteroid levels By controlling corticosteroid levels by modulating ACTH release from the pituitary, lowering the concentration. of blood dynorphin and adrenal histamine, the autoimmune defence mechanisms responsible for the inflammatory reactions in conditions like rheumatoid arthritis could be controlled, with the appropriate prescription.
- TCET has been demonstrated to decrease the secretion of ACTH in both experimental and clinical conditions, and this neurohormone is concerned inter alia with the process of awakening. It is probable that suppression of this hormone will aid the sleep process, especially if coupled with prescriptions which reduce anxiety by lowering noradrenergic tone. It also follows that supression of this substance at specific times of day could help offset the shift in diurnal/circadian rhythm "jet-lag" associated with travel between time zones.
- Some prescriptions have an anti-anxiety component in the mode of action in ameliorating pain and when suppressing noradrenaline turnover, some prescriptions have also enabled habituated subjects to cease using anxiolytic substances. It therefore follows that such prescriptions could be used to replace anxiolytic drugs for the control of stress/anxiety situations. It is also possible that such treatment would be beneficial for subjects suffering from behavioural abnormalities such as schizophrenia.
- Enhancement of the release of neurotransmitters involved in motor control could be beneficial in various conditions such as epilepsy, muscular sclerosis, muscular dystrophy, etc.
- erectile impotence TCET could be used to stimulate the parasympathetic, while inhibiting the sympathetic nervous system.
- amenorrhea/dysmenorrhea with origins in stress and concomitantly elevated prolactin secretion may be attenuated by stimulating dopaminergic and opioid pathways at specific intervals in the menstrual cycle so regulating menses.
- a side-effect of TCET is the stimulation of hepatic function as the result of increased hypothamo-pituitary activity. This can be useful for the clearance of drugs and toxic substances from the individual and could also be useful to protect kidney function in the case of deliberate acute drug overdose.
- the present invention provides bifurcated electrode assembly comprising two arms between which an ear or other fleshy body part can be gripped; biassing means, such as a threaded screw, arranged for biassing the two arms together so as to grip the ear etc. , a threaded electrode carrier being mounted in a passage of one of the arms for advancement towards to ear.
- biassing means such as a threaded screw
- locking means are provided for locking the electrode carrier against rotation.
- the electrode carrier preferably has a threaded split collet with a blind hole in which an electrode needle can be gripped.
- the electrode needle can be permanently mounted in the carrier, e. g. by being moulded in situ.
- the invention provides a head support device for supporting a pair of electrode assemblies, comprising a resilient wire or the like having a u-shaped portion shaped to fit from the tops of the ears round the nape of the neck, and a pair of end portions shaped to descend generally vertically from the top front of the ears and to each of which an electrode assembly can be attached.
- the electrode assembly preferably includes a pivoted bracket for attachment to the head support device.
- Fig. 1 is a side view of an electrode assembly
- Figs. 2 and 3 are plan and side views of the assembly, before being folded;
- Fig. 4 is an enlarged side view of the electrode carrier of the assembly
- Fig. 1 is a general view of an electrode assembly 10.
- a base portion 11 has two major arms 12 and 13 extending from it, forming a pair of jaws to be placed around the lobe or other desired part of the ear.
- a bolt 14 is mounted in arn 12 and engages in a threaded hole in the arm 13, so that by turning its head 15, the arms 12 and 13 can be moved together to grip the chosen part of the ear.
- the facing parts of the ends of the arms 12 and 13 are grooved or serrated to give a good grip.
- the natural positions of the arms 12 and 13 may be sufficiently divergent that the gap between their outer ends is wider than the maximum thickness of the ear.
- the arms 12 and 13 may be formed so that in their natural or unstressed condition, the gap between their ends is that of a typical ear lobe. If that is so, the screw 14 must be able to pull the arms together and force them apart. This can be achieved by providing the screw 14 with a collar (not shown) attached to it adjacent to the inner side of the arm 12.
- An electrode carrier 16 is mounted in a threaded hole towards the end of arm 12.
- the hole is deepened by a collar 17.
- the assembly 10 can comprise a single plastic moulding which is bent in two by virtue of a narrower flexible middle section 18.
- the electrode carrier 16 is illustrated in Fig. 4. It comprises a short, relatively thick screw having a knurled or ribbed head 19 and an axially mounted electrode needle 20 having a pointed end 21 and a distal end 22 onto which an electric lead can be connected by a crimped ferrule connector or the like.
- the carrier 16 can be fitted with a locking nut (not shown) to prevent rotation. Also, callibration can be provided, so that the same degree of advancement of the needle 20 can be achieved on different occasions.
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Abstract
Description
Claims
Priority Applications (13)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR909007805A BR9007805A (en) | 1989-11-01 | 1990-10-31 | ELECTRODE TO PROVIDE TRANSCRANIAL ELECTRO-THERAPY, ESPECIALLY THROUGH THE PATIENT'S EAR LOBULES, APPLIANCE TO GENERATE AN ELECTRIC SIGN FOR USE IN TRANSCRANIAL ELECTRO-THERAPY, AND THE PROCESS OF APPLYING TRANS-CRANE ELECTRO-THERAPY TO A PATIENT |
EP90916128A EP0500607B1 (en) | 1989-11-01 | 1990-10-31 | Apparatus for transcranial electrotherapy |
DE69031838T DE69031838T2 (en) | 1989-11-01 | 1990-10-31 | DEVICE FOR TRANSCRANIAL ELECTROTHERAPY |
DK90916128T DK0500607T3 (en) | 1989-11-01 | 1990-10-31 | Method and apparatus for electrotherapy via the skull. |
DE199090916128T DE500607T1 (en) | 1989-11-01 | 1990-10-31 | DEVICE AND METHOD FOR TRANSCRANIAL ELECTROTHERAPY. |
US07/859,478 US5332401A (en) | 1989-11-01 | 1990-10-31 | Apparatus and method for transcranial electrotheraphy |
CA002072609A CA2072609C (en) | 1989-11-01 | 1990-10-31 | Apparatus and method for transcranial electrotherapy |
KR1019920701029A KR100186748B1 (en) | 1989-11-01 | 1990-10-31 | Apparatus and method for transcranial electrotherapy |
SU5011786A RU2113839C1 (en) | 1989-11-01 | 1990-10-31 | Electrode and device for performing transcranial electrotherapy |
FI921913A FI921913A (en) | 1989-11-01 | 1992-04-29 | APPARAT OCH FOERFARANDE FOER GENOM KRANIET UTFOERD ELEKTROTERAPI. |
NO921700A NO307956B1 (en) | 1989-11-01 | 1992-04-30 | Method and apparatus for transcranial electrotherapy |
GR930300043T GR930300043T1 (en) | 1989-11-01 | 1993-06-21 | Apparatus for transcranial electrotherapy |
GR980400338T GR3026163T3 (en) | 1989-11-01 | 1998-02-18 | Apparatus for transcranial electrotherapy |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8924559.1 | 1989-11-01 | ||
GB898924559A GB8924559D0 (en) | 1989-11-01 | 1989-11-01 | Method for transcranial electrotherapy |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1991006340A1 true WO1991006340A1 (en) | 1991-05-16 |
Family
ID=10665501
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1990/001670 WO1991006340A1 (en) | 1989-11-01 | 1990-10-31 | Apparatus and method for transcranial electrotherapy |
Country Status (18)
Country | Link |
---|---|
US (1) | US5332401A (en) |
EP (1) | EP0500607B1 (en) |
JP (1) | JP2908019B2 (en) |
KR (1) | KR100186748B1 (en) |
AT (1) | ATE161200T1 (en) |
AU (1) | AU643715B2 (en) |
BR (1) | BR9007805A (en) |
CA (1) | CA2072609C (en) |
DE (2) | DE500607T1 (en) |
DK (1) | DK0500607T3 (en) |
ES (1) | ES2041603T3 (en) |
FI (1) | FI921913A (en) |
GB (2) | GB8924559D0 (en) |
GR (2) | GR930300043T1 (en) |
HU (2) | HU210935B (en) |
NO (1) | NO307956B1 (en) |
RU (1) | RU2113839C1 (en) |
WO (1) | WO1991006340A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0645162A1 (en) | 1993-09-29 | 1995-03-29 | Tech Pulse Cc | Nerve stimulation apparatus and method |
US5449378A (en) * | 1992-05-08 | 1995-09-12 | Schouenborg; Jens | Method and apparatus for the electric stimulation of skin receptors |
WO2002028477A1 (en) | 2000-10-05 | 2002-04-11 | Spes Patents Limited | Apparatus for applying electronic treatment |
WO2009045297A1 (en) * | 2007-10-01 | 2009-04-09 | Medtronic, Inc. | Gastric electrical stimulation with lockout interval anti-desensitization feature |
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US5449378A (en) * | 1992-05-08 | 1995-09-12 | Schouenborg; Jens | Method and apparatus for the electric stimulation of skin receptors |
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WO2009045297A1 (en) * | 2007-10-01 | 2009-04-09 | Medtronic, Inc. | Gastric electrical stimulation with lockout interval anti-desensitization feature |
US7957807B2 (en) | 2007-10-01 | 2011-06-07 | Medtronic, Inc. | Gastric electrical stimulation with therapy window anti-desensitization feature |
US7983755B2 (en) | 2007-10-01 | 2011-07-19 | Medtronic, Inc. | Gastric electrical stimulation with multi-site stimulation anti-desensitization feature |
US9446234B2 (en) | 2007-10-01 | 2016-09-20 | Medtronic, Inc. | Gastric electrical stimulation with lockout interval anti-desensitization feature |
US10792495B2 (en) | 2016-12-01 | 2020-10-06 | Thimble Bioelectronics, Inc. | Neuromodulation device and method for use |
US11801383B2 (en) | 2016-12-01 | 2023-10-31 | Hinge Health, Inc. | Neuromodulation device and method for use |
Also Published As
Publication number | Publication date |
---|---|
NO921700D0 (en) | 1992-04-30 |
GB2244654A (en) | 1991-12-11 |
BR9007805A (en) | 1992-09-29 |
CA2072609C (en) | 2001-06-19 |
RU2113839C1 (en) | 1998-06-27 |
US5332401A (en) | 1994-07-26 |
AU643715B2 (en) | 1993-11-25 |
ES2041603T1 (en) | 1993-12-01 |
GB2244654B (en) | 1994-02-09 |
DE69031838D1 (en) | 1998-01-29 |
ES2041603T3 (en) | 1998-04-16 |
FI921913A0 (en) | 1992-04-29 |
NO307956B1 (en) | 2000-06-26 |
KR100186748B1 (en) | 1999-05-01 |
NO921700L (en) | 1992-06-17 |
AU6617090A (en) | 1991-05-31 |
HU9201451D0 (en) | 1992-09-28 |
GB9114200D0 (en) | 1991-08-21 |
HUT61900A (en) | 1993-03-29 |
CA2072609A1 (en) | 1991-05-02 |
DE500607T1 (en) | 1993-09-23 |
JP2908019B2 (en) | 1999-06-21 |
HU210935B (en) | 1995-09-28 |
GR930300043T1 (en) | 1993-06-21 |
JPH05504492A (en) | 1993-07-15 |
EP0500607A1 (en) | 1992-09-02 |
KR920703150A (en) | 1992-12-17 |
GB8924559D0 (en) | 1989-12-20 |
GR3026163T3 (en) | 1998-05-29 |
EP0500607B1 (en) | 1997-12-17 |
FI921913A (en) | 1992-04-29 |
DK0500607T3 (en) | 1998-08-24 |
DE69031838T2 (en) | 1998-07-16 |
ATE161200T1 (en) | 1998-01-15 |
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