Systems, devices, components and methods for triggering or inducing resonance or high amplitude oscillations in a cardiovascular system of a patient
09943461 ยท 2018-04-17
Inventors
Cpc classification
A61H2230/655
HUMAN NECESSITIES
A61H1/005
HUMAN NECESSITIES
A61H2230/065
HUMAN NECESSITIES
A61H2201/5002
HUMAN NECESSITIES
A61H1/003
HUMAN NECESSITIES
A61H2201/5005
HUMAN NECESSITIES
A61H2230/045
HUMAN NECESSITIES
A61H2230/425
HUMAN NECESSITIES
A61H2201/501
HUMAN NECESSITIES
International classification
A61H23/00
HUMAN NECESSITIES
A61H31/00
HUMAN NECESSITIES
Abstract
Various embodiments of systems, devices, components, and methods for providing external therapeutic vibration stimulation to a patient are disclosed and described. Therapeutic vibration stimulation is provided to at least one location on a patient's skin, or through clothing or a layer disposed next to the patient's skin, and is configured to trigger or induce resonance or high amplitude oscillations in a cardiovascular system of the patient. Inducing such resonance can aid in training autonomic reflexes and improve their functioning.
Claims
1. A system configured to provide vibration stimulation therapy to a patient, comprising: a plurality of sensors that are adapted to be attached to the patient, wherein the plurality of sensors continuously monitor a plurality of physiological parameters of the patient, wherein the plurality of physiological parameters include power spectral density consecutive R-wave to R-wave interval data of a cardiovascular system of the patient; a vibration signal generator that is adapted to be attached to a region of the patient and that is configured to deliver one or more vibration signals to the region of the patient, wherein the vibration signal generator includes a vibration motor; a hardware processor operably connected to the vibration signal generator and the plurality of sensors, wherein the hardware processor is configured to: determine a resonance frequency from a plurality of resonance frequencies including one or more of heart rate, blood pressure, vascular tone, and stroke volume of the cardiovascular system of the patient; determine vibration signal parameters for a baseline vibration signal to deliver to the region of the patient based on the determined resonance frequency of the cardiovascular system of the patient from the plurality of physiological parameters obtained from the plurality of sensors adapted to be attached to the patient at a first time, wherein the baseline vibration signal parameters includes a baseline waveform shape, a baseline amplitude, and a baseline frequency that includes a first time period associated with a first type of baseline vibration signal and a second time period associated with a second type of baseline vibration signal, wherein a combination of the first time period and the second time period is equivalent to a third time period and wherein the third time period is set to approximate the determined resonance frequency of the cardiovascular system of the patient; cause the power spectral density consecutive R-wave to R-wave interval data of the patient to be modified by transmitting the determined vibration signal parameters to the vibration motor in the vibration signal generator and delivering the baseline vibration signal having the baseline waveform shape, the baseline amplitude, and the baseline frequency to the region of the patient; determine whether the power spectral density consecutive R-wave to R-wave interval data of the patient at a second time is deemed as inducing resonance or high amplitude oscillations in the cardiovascular system of the patient by (i) determining a frequency range based on a single-cycle duration of time corresponding to the sum of a first duration of time associated with the first time periods and a second duration of time associated with the second time period and (ii) determining whether a peak is present within the determined frequency range of the power spectral density consecutive R-wave to R-wave interval data of the patient; in response to determining that the power spectral density consecutive R-wave to R-wave interval data of the patient at the second time is not deemed as inducing resonance or high amplitude oscillations in the cardiovascular system of the patient, determine adjusted vibration signal parameters based on the plurality of physiological parameters obtained from the plurality of sensors adapted to be attached to the patient at the second time, wherein the adjusted vibration signal parameters includes at least one of an adjusted waveform shape, an adjusted amplitude, and an adjusted frequency that includes a fourth time period associated with a first type of adjusted vibration signal and a fifth time period associated with a second type of adjusted vibration signal, wherein a combination of the fourth time period and the fifth time period is equivalent to the third time period that approximates the determined resonance frequency of the cardiovascular system of the patient; and transmit the adjusted vibration signal parameters to the vibration motor in the vibration signal generator, thereby delivering an adjusted vibration signal having the adjusted vibration signal parameters to the region of the patient.
2. The system of claim 1, wherein the vibration signal generator, the hardware processor, and a power source are included in a stationary device.
3. The system of claim 2, wherein the stationary device is one of a chair, an exercise machine, a couch, an automobile seat, a steering wheel, a bed and a mattress.
4. The system of claim 1, wherein the vibration signal generator, the hardware processor, and a power source are included in a wearable or portable device.
5. The system of claim 4, wherein the wearable or portable device comprises one of a band and a watch.
6. The system of claim 1, wherein the hardware processor and the power source are included in a wearable or portable device.
7. The system of claim 6, wherein the wearable or portable device comprises a watch.
8. The system of claim 6, wherein the wearable or portable device is configured to communicate wirelessly with an external computing device.
9. The system of claim 6, wherein the wearable or portable device is configured to communicate via a wire with an external computing device.
10. The system of claim 1, wherein the system further comprises a receiver operably connected to the hardware processor.
11. The system of claim 1, wherein the system further comprises a transmitter operably connected to the hardware processor.
12. The system of claim 1, wherein the system further comprises a user input device operably connected to the hardware processor.
13. The system of claim 12, wherein the user input device is an on/off switch.
14. The system of claim 12, wherein the user input device is configured to permit the patient to adjust the baseline frequency, baseline amplitude, or a baseline phase of the baseline vibration signal, or to change the length of the first period associated with the baseline vibration signal or the second period associated with the baseline vibration signal.
15. The system of claim 1, wherein the hardware processor is further configured to terminate delivery of the baseline vibration signal or the adjusted vibration signal to the patient based on information corresponding to the plurality of physiological parameters of the patient that are being monitored using the plurality of sensors.
16. The system of claim 1, wherein the hardware processor is further configured to initiate delivery of the baseline vibration signal or the adjusted vibration signal to the patient based on information corresponding to the plurality of physiological parameters of the patient that are being monitored using the plurality of sensors.
17. The system of claim 1, wherein the vibration signal generator is one or more headphones or ear buds.
18. The system of claim 1, wherein the vibration signal generator is one or more speakers.
19. The system of claim 1, wherein the vibration signal generator is one or more motors.
20. The system of claim 1, further comprising a power source that comprises at least one of a battery and rectified and conditioned ac household power.
21. The system of claim 1, wherein the baseline vibration signal is delivered to the region of the patient for first time periods, the baseline vibration signal is not delivered to the region of the patient for second time periods, and the second time periods being interposed between the first time periods.
22. The system of claim 21, wherein the hardware processor is configured to determine whether the power spectral density consecutive R-wave to R-wave interval data of the patient at the second time is deemed as inducing resonance or high amplitude oscillations in the cardiovascular system of the patient based at least in part on a single-cycle duration of time corresponding to the sum of a first duration of time associated with the first time periods and a second duration of time associated with the second time periods.
23. The system of claim 22, wherein the hardware processor is further configured to: determine a frequency range based on the single-cycle duration of time; and determine whether the power spectral density consecutive R-wave to R-wave interval data of the patient includes a peak within the determined frequency range, wherein the power spectral density consecutive R-wave to R-wave interval data of the patient at the second time is deemed as inducing resonance or high amplitude oscillations in the cardiovascular system of the patient in response to a presence of the peak within the determined frequency range.
24. The system of claim 1, wherein the hardware processor is further configured to transmit the determined vibratory signal parameters or the adjusted vibratory signal parameters to the vibration motor by transmitting a signal that indicates the electrical current to be provided to the vibration motor.
25. A system configured to provide vibration stimulation therapy to a patient, comprising: a plurality of sensors that are adapted to be attached to the patient, wherein the plurality of sensors continuously monitor a plurality of physiological parameters of the patient, wherein the plurality of physiological parameters include power spectral density consecutive R-wave to R-wave interval data of a cardiovascular system of the patient a vibration signal generator that is adapted to be attached to a region of the patient and that is configured to deliver one or more vibration signals to the region of the patient, wherein the vibration signal generator includes a vibration motor; a hardware processor operably connected to the vibration signal generator and the plurality of sensors, wherein the hardware processor is configured to: determine a resonance frequency from a plurality of resonance frequencies including one or more of heart rate, blood pressure, vascular tone, and stroke volume of the cardiovascular system of the patient; determine vibration signal parameters for a baseline vibration signal to deliver to the region of the patient based on the determined resonance frequency of the cardiovascular system of the patient from the plurality of physiological parameters obtained from the plurality of sensors adapted to be attached to the patient at a first time, wherein the baseline vibration signal parameters includes timing parameters that deliver the baseline vibration signal to the region of the patient for a first time period and that do not deliver the baseline vibration signal to the region of the patient for a second time period, wherein the second time period is interposed between instances of the first time period and wherein a combination of the first time period and the second time period is equivalent to a third time period and wherein the third time period is set to approximate the determined resonance frequency of the cardiovascular system of the patient; cause the power spectral density consecutive R-wave to R-wave interval data of the patient to be modified by transmitting the determined vibration signal parameters to the vibration motor in the vibration signal generator and delivering the baseline vibration signal having the baseline waveform shape, the baseline amplitude, and the baseline frequency to the region of the patient; determine whether the power spectral density consecutive R-wave to R-wave interval data of the patient at the second time is deemed as inducing resonance or high amplitude oscillations in the cardiovascular system of the patient by determining a frequency range based on a single-cycle duration of time corresponding to the sum of a first duration of time associated with the first time periods and a second duration of time associated with the second time periods and determining whether a peak is present within the determined frequency range of the power spectral density consecutive R-wave to R-wave interval data of the patient, wherein the power spectral density consecutive R-wave to R-wave interval data of the patient at the second time is deemed as inducing resonance or high amplitude oscillations in the cardiovascular system of the patient in response to the presence of the peak within the determined frequency range; in response to determining that the power spectral density consecutive R-wave to R-wave interval data of the patient at the second time is not deemed as inducing resonance or high amplitude oscillations in the cardiovascular system of the patient, determine adjusted vibration signal parameters based on the plurality of physiological parameters obtained from the plurality of sensors adapted to be attached to the patient at the second time, wherein the adjusted vibration signal parameters includes at least one of an adjusted waveform shape, an adjusted amplitude, and an adjusted frequency that deliver the adjusted vibration signal to the region of the patient for a fourth time period and that do not deliver the adjusted vibration signal to the region of the patient for a fifth time period, wherein the fifth time period is interposed between instances of the fourth time period and wherein a combination of the fourth time period and the fifth time period is equivalent to the third time period that approximates the resonance frequency of the cardiovascular system of the patient; and transmit the adjusted vibration signal parameters to the vibration motor in the vibration signal generator, thereby delivering an adjusted vibration signal having the adjusted vibration signal parameters to the region of the patient.
26. The system of claim 25, wherein the vibration signal generator, the hardware processor, and a power source are included in a stationary device.
27. The system of claim 26, wherein the stationary device is one of a chair, an exercise machine, a couch, an automobile seat, a steering wheel, a bed and a mattress.
28. The system of claim 25, wherein the vibration signal generator, the hardware processor, and a power source are included in a wearable or portable device.
29. The system of claim 28, wherein the wearable or portable device comprises one of a band and a watch.
30. The system of claim 25, wherein the hardware processor and the power source are included in a wearable or portable device.
31. The system of claim 30, wherein the wearable or portable device comprises a watch.
32. The system of claim 30, wherein the wearable or portable device is configured to communicate wirelessly with an external computing device.
33. The system of claim 30, wherein the wearable or portable device is configured to communicate via a wire with an external computing device.
34. The system of claim 25, wherein the system further comprises a receiver operably connected to the hardware processor.
35. The system of claim 25, wherein the system further comprises a transmitter operably connected to the hardware processor.
36. The system of claim 25, wherein the system further comprises a user input device operably connected to the hardware processor.
37. The system of claim 36, wherein the user input device is an on/off switch.
38. The system of claim 36, wherein the user input device is configured to permit the patient to adjust the baseline frequency, baseline amplitude, or a baseline phase of the baseline vibration signal, or to change the length of the first period or the second period.
39. The system of claim 25, wherein the hardware processor is further configured to terminate delivery of the baseline vibration signal or the adjusted vibration signal to the patient based on information corresponding to the plurality of physiological parameters of the patient that are being monitored using the plurality of sensors.
40. The system of claim 25, wherein the hardware processor is further configured to initiate delivery of the baseline vibration signal or the adjusted vibration signal to the patient based on information corresponding to the plurality of physiological parameters of the patient that are being monitored using the plurality of sensors.
41. The system of claim 25, wherein the vibration signal generator is one or more headphones or ear buds.
42. The system of claim 25, wherein the vibration signal generator is one or more speakers.
43. The system of claim 25, wherein the vibration signal generator is one or more motors.
44. The system of claim 25, further comprising a power source that comprises at least one of a battery and rectified and conditioned ac household power.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) Different aspects of the various embodiments will become apparent from the following specification, drawings and claims in which:
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(6) The drawings are not necessarily to scale. Like numbers refer to like parts or steps throughout the drawings.
DETAILED DESCRIPTIONS OF SOME EMBODIMENTS
(7) Described herein are various embodiments of vibration stimulation therapy systems, devices, components and methods that are configured to trigger or induce resonance or high amplitude oscillations in a cardiovascular system of the patient.
(8) The arterial baroreflex system (BRS) is a reflexive control system that counteracts acute shifts in blood pressure (BP) by invoking compensatory reactions in cardiovascular functions (e.g., heart rate (HR), vascular tone (VT), and stroke volume (SV)). Baroreceptors trigger simultaneous reflexive reactions in HR, VT, and SV. The BRS regulates short-term BP serving to protect the brain from stroke and the heart from myocardial infarction as well as to restore its inhibition-excitation balance. Low or reduced baroreflex sensitivity is often associated with numerous problems and disorders, such as hypertension, congestive heart failure, coronary heart disease, depression and aging. Reduced baroreflex sensitivity blunts the flexibility of the regulatory system, whereas a high sensitivity is associated with health and wellness.
(9) Similar to engineering closed loop control systems with delays, the closed loop baroreflex system has been discovered to possess resonance properties. That is, there are certain frequencies (known as resonant or resonance frequencies) at which stimulation of the baroreflex system can elicit high amplitude oscillations in HR, BP, SV, and/or VT. The value of the delay in the feedback control system can be used to define one or more resonant frequencies in the closed loop control system. In one such embodiment, the period of the resonant oscillations is equal to the value of two delays. In a closed loop baroreflex system, periodic driving forces at one or more resonant frequencies can produce much larger amplitudes. This is because a baroreflex system is characterized by delays between changes in BP and HR (5 seconds), as well as between BP and VT (10-15 seconds), and can have, by way of example, resonance frequencies of 0.1 Hz and 0.03 Hz (i.e., periods of resonance oscillation are 10 s and 30 s). Each person's baroreflex system has own delays and accordingly own resonance frequencies. These changes can coincide in some fashion with, or can be proportional to, certain resonant frequencies.
(10) Some studies have revealed that interventions such as slow meditative breathing and progressive muscle relaxation performed at or near a patient's resonant frequency can increase oscillations at these frequencies and increase short-term HR baroreflex sensitivity, vagal tone, and/or heart rate variability. This is especially so in healthy individuals and in patients who suffer from cardiovascular or autonomic nervous system disorders. Like many systems, the cardiovascular system has many different functions, and is characterized by several distinct resonant frequencies.
(11) As noted above, according to Vaschillo and colleagues (2010), the baroreflex system in humans can demonstrate resonance properties at frequencies of about 0.1 Hz. In an HR baroreflex closed-loop system, a shift in BP can cause a compensatory HR response that is delayed for approximately 5 seconds. These delays of approximately 5 seconds can in turn coincide with resonance oscillations of about 0.1 Hz (since oscillation periods are equal to twice the value of the delaye.g., a cycle of about 10 seconds comprised of adjacent 5 second periods). Similarly, the VT baroreflex system in humans can demonstrate resonance properties at frequencies of about 0.03 Hz. In a VT baroreflex closed loop system, the compensatory response of the vasculature is delayed for approximately 10-20 seconds as compared to approximately 5 seconds in the HR baroreflex system. This delay of about 15 seconds coincides with resonance oscillations of about 0.03 Hz (since, again, oscillation periods are equal to twice the value of the delay, e.g., a cycle of about 30 seconds comprised of adjacent 15 second periods).
(12) One mechanism to create or induce resonance in an HR baroreflex system has been through slow paced breathing at an average of about 6 full cycles per minute in which an individual inhales for approximately 4-7 seconds and exhales for approximately 4-7 seconds. Doing so results in individual inhalation-exhalation cycles of about 8-14 seconds. While rates vary according to the individual, breathing at such rates can produce high amplitude oscillations in the HR baroflex system that typically range between about 0.075 Hz and about 0.125 Hz, depending on short-term baroreflex sensitivity and short-term heart rate variability. Long-term practice of such breathing patterns has been linked to an increase in baroreflex sensitivity and HRV at rest. In other words, research has shown that it is possible to cause or induce resonance in the CVS through manipulation of breathing, auditory and visual stimuli, or rhythmical muscle relaxation.
(13) One mechanism to induce resonance in the VT baroreflex system has also been through slow paced breathing at an average of approximately 2-3 full cycles per minute in which an individual inhales for approximately 10-20 seconds and exhales for approximately 10-20 seconds resulting in individual inhalation-exhalation cycles of 20-40 seconds. While rates vary according to the individual, breathing at such rates can produce high amplitude oscillations in the VT baroflex system of about 0.03 Hz, depending among other things on normalization in vascular tone and blood pressure regulation. Similar to the HR baroreflex system, some research has demonstrated that it is possible to cause resonance in the VT baroreflex system cardiovascular system through the manipulation of breathing.
(14) Research directed specifically to the effects of breathing at approximately the foregoing rates has revealed significant potential effects on the CVS, with potential cascading effects on disorders associated with vagal and autonomic dysfunction. Some studies have revealed that paced breathing at a rate of approximately 0.1 Hz can be used effectively in heart rate variability (HRV) biofeedback techniques, as described by Lehrer and Vaschillo (2003). Some studies have also revealed that entraining the CVS and breathing at about 0.1 hz can improve the symptoms of numerous disorders, such as depression, PTSD, fibromyalgia, hypertension, abdominal pain, and coronary heart disease (Vaschillo et al., 2010; Wheat and Larkin, 2010; Zucker et al, 2009). As noted by Vaschillo and colleagues in 2010, the therapeutic effects of HRV biofeedback are thought to be due to the induction of high-amplitude oscillations in HR, BP, and VT at specific frequencies which exercise and activate homeostatic reflexes (e.g., the baroreflex reflex), retrain them, and initiate, through the baroreceptors, a cascade of neurobiological events that produces a generalized inhibitory effect on the brain.
(15) Other methods to cause high-amplitude oscillation in HR, BP, and VT at specific frequencies may exist, including presenting emotional pictures at a ten second cycle (5 seconds with pictures, 5 seconds without picturessee Vaschillo et al., 2010), and self-induced rhythmical muscle tension stimulation at the same frequency (France et al., 2006; Lehrer et al., 2009). External or patient-induced stimulation provided at specific frequencies thus may entrain similar frequencies in the CVS through increasing spectral power in the inter-beat interval (RRI), blood pressure (BP) and pulse transit time (PTT). External or patient-induced stimulation may also improve other areas of functioning such as increases in cerebral oxygenation (see, e.g., France, France, & Patterson, 2006). External stimulation through visual pictures or muscle tension exercises might also produce similar clinical effects in the CVS as those produced by breathing biofeedback techniques. Treating diseases associated with cardiovascular dysfunction using external stimulation techniques or patient-induced stimulation, such as hypertension, atrial fibrillation, mental health disorders, depression, post-traumatic stress disorder and substance abuse, may also be possible.
(16) The average stimulation frequency of the HR-baroreflex system is approximately 0.1 Hz (or 6 cycles per minute). Individual differences in the optimal frequency to create resonance in the HR CVS exist, however, and can range between 4 and 7 cycles per minute. These differences have been noted to be a result of differences in blood volume, and can be roughly estimated using height and gender information. Taller individuals and males have longer stimulation rates (e.g. taller individuals have longer total cycles) to create HR resonance. The same is true for VT-baroreflex, where taller individuals require longer total stimulation cycles to create VT resonance.
(17) In addition to creating increased oscillations at the above resonance frequencies which increase dramatically when stimulated, CVS functions may be entrained at other frequencies through breathing at higher or lower rates. Frequencies entrained in the CVS correspond roughly to a total period of one cycle of inhalation and exhalation combined, indicating that the CVS might be entrained using a range of active and/or inactive stimulation cycles. As described above, then, breathing and external stimulation through visual pictures or muscle tension exercises can produce changes in the CVS exhibited through high amplitude oscillations at frequencies that approximately mirror the frequency of breathing, for example.
(18) It has been discovered by us, however, that external stimulation via rhythmical mechanical external vibration can also entrain the CVS to increase oscillations at resonance frequencies or other specific frequencies. This can have profound implications for the treatment of numerous psychiatric and medical disorders, particularly depression and cardiovascular disease, which are often associated with dysregulation in the cardiovascular system and decreased vagal tone. Previous methods to induce resonance or high amplitude oscillations often required active involvement from the patient (e.g., paced breathing or muscle tension). According to one embodiment, there is provided a passive means to stimulate the same reflexes, which can extend the therapeutic effects to a significantly larger population in need.
(19) Resonance or high amplitude oscillations can be induced or created in the CVS by means of a system or device that creates and/or delivers vibration stimulation according to a vibration therapy stimulation regime, which according to some embodiments is predetermined or pre-programmed. Examples of such vibration regimes for the HR baroreflex system include an 8-14 second cycle (e.g., on for 4-7 seconds and off for 4-7 seconds, or increasing in vibration frequency for 4-7 seconds or decreasing in vibration frequency for 4-7 seconds), a 20-40 second cycle (e.g., 10-20 seconds active or increasing vibration frequency and 10-20 seconds inactive or decreasing vibration frequency). However, there is evidence that one can entrain the CVS at nearly any frequency within the human range to increase specific oscillations in the CVS.
(20) Disclosed and described herein are techniques for entraining frequencies in the CVS to promote human adaptability and responsiveness to internal and environmental perturbations, as well as to promote overall health and wellbeing. Rhythmical mechanical external stimulation of the CVS at specific frequencies can be employed to powerfully impact the CVS. The high amplitude oscillation of cardiovascular functions at resonant frequencies generated by such stimulation can help regulate the CVS, modulate the vagus nerve and the brain, and normalize the inhibition-excitation balance of the CVS on brain systems, and in such a manner provide beneficial therapy to a patient. In some embodiments, the vibration stimulation cycle can entrain the CVS at a frequency or period that mirrors a combined on-off cycle or increasing/decreasing frequency vibration provided by the systems and devices described and disclosed herein.
(21) As noted above, the HR system resonates at about 0.1 Hz and the VT system resonates at approximately 0.03 Hz, although variability between individuals exists necessitating a range of cycle options. In some embodiments, a system or device delivers repeated cycles of mechanical vibration to a patient that vary between 8-14 seconds (4-7 seconds active or increasing vibration frequency for a first period and 4-7 seconds inactive or decreasing vibration frequency for a second period) to stimulate the HR baroreflex system and produces cycles of vibration between 20-40 seconds (10-20 seconds active or increasing vibration frequency for a first period and 10-20 seconds inactive or decreasing vibration frequency for a second period) to stimulate the VT baroreflex system. According to some embodiments, the vibration method and therapy can entrain the CVS using total cycles (the first period and second period adjacent) that range between 8 seconds and 40 seconds. By way of example, a 10 second total cycle can create an increase in CVS oscillations at about 0.1 Hz, a 12 second total cycle can create an increase in CVS oscillations at about 0.08 Hz, a 20 second total cycle can create an increase in CVS oscillations at about 0.05 Hz, and a 40 second total cycle can create an increase in CVS oscillations at about 0.025 Hz. While the goal is to entrain individuals at their approximate resonant frequency (e.g., 1 Hz), the therapeutic stimulation described and disclosed herein can be used to approximate nearly any CVS frequency ranging between, by way of example, about 0.01 Hz and about 0.4 Hz in any one or more of the HR, BP and VT systems.
(22) The amplitude and frequency of the actual vibration that is provided to the patient (as opposed to the time period or frequency of the overall cycle of the vibration that is provided) can be any suitable frequency or amplitude that is tolerable by the human body. The frequency of the actual vibration signal provided during a cycle can be stable (e.g., 100 Hz for 5 seconds, and then inactive for 5 seconds) or increasing and then decreasing, or decreasing and then increasing. For example, an increase in vibration frequency for 7 seconds (e.g., from 5 Hz to 30 Hz over 7 seconds) followed by a decrease in vibration frequency (e.g., from 30 Hz to 5 Hz over 7 seconds) during a 14 second cycle can be used to create a rhythmical repeating pattern of vibration and stimulation.
(23) Referring now to
(24)
(25) Referring now to
(26) In
(27) In
(28)
(29)
(30) The induced resonance or oscillations are characterized by a third period that approximates the adjacent first and second periods combined, and that represents the above-described overall periods or total cycles. For example, a third period of 12 seconds (e.g. 6 seconds vibration on and 6 seconds vibration off) will entrain the CVS to oscillate at higher amplitudes at approximately 0.08 Hz than would be without the stimulation. This is analogous to breathing in for 6 seconds and out for 6 seconds creating a 12 second period to entrain the CVS at approximately 0.08 Hz. By way of example, such a third period can range between about 4 seconds and 200 seconds, between about 4 and 60 seconds, between about 8 seconds and 40 seconds, between about 4 seconds and 20 seconds, and/or between about 8 seconds and about 14 seconds. Other ranges are contemplated for the third period.
(31) Likewise, various ranges of time are contemplated for the first and second periods of time, which are not intended to be limited by the explicit examples provided herein. For example, the first and/or second periods of time may range between about 2 seconds and about 100 seconds, between about 2 seconds and about 30 seconds, between about 4 seconds and about 20 seconds, between about 4 seconds and about 10 seconds, between about 4 seconds and about 7 seconds, or any other suitable range of time. Other ranges are contemplated for the first and second periods.
(32) Also by way of example, the frequency of the vibration signal can range between about 0 or 0.1 Hz and about 2,000 Hz, between about 0, 0.1 or 1 Hz and about 250 Hz, between about 5 or 10 Hz and about 125 Hz, between about 25 Hz and about 125 Hz. Other ranges of frequencies are also contemplated.
(33) Continuing to refer to
(34) Furthermore, and continuing to refer to
(35) The resonance or high amplitude oscillations induced or created by the methods described and disclosed herein may be used to treat a patient for a stress-related disorder, depression, hypertension, an autonomic dysfunction, atrial fibrillation, coronary heart disease, diabetes, post-traumatic stress disorder, substance abuse, and yet other disorders, maladies or diseases. Such induced or created resonance, or forced oscillations, can also be employed to increase a patient's baroreflexes, increase the flexibility of a patient's CVS, and/or increase or improve a patient's vagal nerve tone and/or stress reactivity.
(36) In
(37) In
(38) Successive cycles comprising the illustrated first and second portions may then be repeated as long as desired to effect suitable entrainment of the CVS. Successive cycles can also be terminated, adjusted or modified in accordance with physiological parameters of the patient that have been sensed, more about which is said below.
(39)
(40)
(41) According to some embodiments, and continuing to refer to
(42) Likewise, various ranges of time are contemplated for the first and second periods of time illustrated in
(43) Continuing to refer to
(44) Furthermore, and continuing to refer to
(45) As with respect to the methods illustrated in
(46) Referring now to
(47) We turn now to
(48) The vibration stimulation provided to the test subject while the data of
(49) Once the subject was seated, and before monitoring or vibration signals were provided, various sensors were connected to the test subject, including cardiac heart rate and blood pressure sensors so that in addition to RRI, heart rate variability (HRV or beat-to-beat heart rate) and blood pressure variability (BPV or beat-to-beat blood pressure) could be measured. When the vibration signals were provided to the subject, the vibration signals were increased in frequency from approximately 5 Hz to 30 Hz over the first period of 6 seconds, and during the second period of 6 seconds were decreased in frequency from 30 Hz to 5 Hz (
(50) During the experiments, a computer based microcontroller (ARDUINO) was used to send an intermittent PWM (pulse width modulation) signal to a vibration motor, which was operated at 1.5 volts with 4.6 mm of displacement and an acceleration of 0.5 Gs. This allowed the intensity as well as the frequency of vibration pulses to be controlled by changing the electrical current provided to the motor.
(51) Comparison of
(52)
(53)
(54)
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(57)
(58)
(59) Note further that various components illustrated in
(60) Referring still to
(61) In other embodiments, and continuing to refer to
(62) Referring now to all the Figures, it is to be noted that CPU 102 in system 100 is configured to perform the methods described above and in the Figures. System 100, device 105, portable device 300, and/or computer 400 can further comprise a data source/storage device that includes a data storage device, computer memory, and/or a computer readable medium (e.g., memory 106 in
(63) The above-described embodiments should be considered as examples of the present invention, rather than as limiting the scope of the invention. In addition to the foregoing embodiments of the invention, review of the detailed description and accompanying drawings will show that there are other embodiments of the present invention. Accordingly, many combinations, permutations, variations and modifications of the foregoing embodiments of the present invention not set forth explicitly herein will nevertheless fall within the scope of the present invention.