CN201642503U - Monitoring treatment device based on biofeedback - Google Patents
Monitoring treatment device based on biofeedback Download PDFInfo
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- CN201642503U CN201642503U CN2010201307391U CN201020130739U CN201642503U CN 201642503 U CN201642503 U CN 201642503U CN 2010201307391 U CN2010201307391 U CN 2010201307391U CN 201020130739 U CN201020130739 U CN 201020130739U CN 201642503 U CN201642503 U CN 201642503U
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Abstract
The utility model discloses a monitoring treatment device based on biofeedback, comprising a signal acquisition unit, a signal processing unit and a feedback effect unit; wherein, the signal acquisition unit is used for acquiring the biological signal of a user, the signal processing unit is connected with the signal acquisition unit and is used for receiving the biological signal acquired by the signal acquisition unit and transmitting an instruction after analyzing the biological signal, the feedback effect unit is connected with the signal processing unit and applying feedback effect on the user according to the instruction transmitted by the signal processing unit; the signal processing unit comprises a signal amplifier circuit, the feedback effect unit comprises an electric stimulus pulse generation part and/or audio generation part. The monitoring treatment device based on biofeedback avoids the foreign body sensation caused by implantation anti-snoring or anti-odontoprisis devices, has no influence on normal sleeping, can effectively improve the sleep quality of patients, has high recognition accuracy and remarkable treatment effect.
Description
Technical field
This utility model is about a kind of monitor therapy device based on biofeedback, particularly a kind of monitor therapy snoring and/or the device of grinding one's teeth in sleep.
Background technology
The sound of snoring belongs to a kind of unusual respiratory murmur, is because the rhythmicity sound that pathological changes or pharyngeal soft tissues such as the caused soft palate of sleeping posture mistake and the root of the tongue are produced with breathing.In the past, snoring is by the performance of thinking mistakenly to sleep soundly, but people have recognized gradually that this is a kind of disease now.The mechanism of snoring is, snorer's air flue bottleneck throat muscle compensatory shrinks and makes air flue keep open when clear-headed, do not stop up, but nerve excitability descends when sleep, and is of flaccid muscles, and pharyngeal is stopped up, thereby air flue is subsided, when air communication is crossed narrow positions, produce eddy current and cause vibration, thereby the sound of snoring occurs.Snoring causes asphyxia sometimes, and the ventilation volume of body necessity is restricted, and causes the partial pressure of carbon dioxide of body to raise; blood oxygen saturation reduces, and shows as sleep apnea syndrome (Sleep Apnea Syndrome), and this can cause the brain function infringement usually; show as drowsiness, dysnoesia and personality change on daytime, severe patient can cause hypertension, heart disease; arrhythmia; cerebrovascular accident, diabetes, nephropathy; hypothyroidism or the like, even sudden death in sleeping.In addition, the excessive rest that also may influence with the chamber people of the sound of snoring causes harmful effect to other people.
Habituation was ground one's teeth in sleep and is increased the weight of in time when so-called odontorisis was meant sleep, was a kind of secular vicious cycle disease.Grinding one's teeth in sleep is that the undesired excitement of part brain cell of central nervous system's cerebral cortex jawbone Operational Zone causes the trigeminal nerve function disorder, and nervi trigeminus domination masticatory muscles strong persistence non-functional takes place shrinks, thereby makes the masticatory movement of tooth generation quack sound.Because sleep bruxism is kowtowed tooth consumingly and hit together, lack the mitigation of food again, easily cause the protection material excessive wear of dental surface, and the dentin of protection material below is come out.The lighter is to the food anaphylaxis that stimulates such as hot and cold, sour, sweet, and weight person can cause that dental bed is often hemorrhage, inflammation, odontoseisis even come off.Long-term sleep bruxism also may cause a series of complication, masticatory muscles dysfunction for example, and headache, nape portion paroxysmal pain, sleep quality descends, hypomnesis, halitosis or halitosis, audition and sense of taste damage or the like.People thought mistakenly in the past, and Enterozoa causes grinds one's teeth in sleep.Up-to-date studies show that, is not that Enterozoa causes and grinds one's teeth in sleep, but intestinal causes the abnormal stimulation of brain and grinds one's teeth in sleep.And, it is in close relations with people's mental status to grind one's teeth in sleep, the immediate cause of grinding one's teeth in sleep is the autonomic nervous dysfunction, a nervi trigeminus motion exaltation of domination masticatory muscles, or digestive system has sent rub-out signal to brain unusually, brain is takeed for to be needed feed and has started the masticatory muscles motion, owing to mouth in the sleep is in the state of closing, therefore produce the phenomenon of grinding one's teeth in sleep simultaneously, its pathologic basis is a cerebral cortex exaltation, the disorder of intestinal brain interactive relationship, gastrointestinal dysfunction.In addition, ideological pressure or the unappeasable mental status or psychentonia etc. also may cause and grind one's teeth in sleep.
Snoring and grinding one's teeth in sleep all has totally unfavorable influence to human body, and adopting biofeedback (biofeedback) principle to correct snoring or grind one's teeth in sleep at present is a kind of new treatment means.Biofeedback belongs to a kind of special Therapeutic Method, and its utilization instrument (utilizing electronic machine usually) discloses the normal or abnormal movement of inside of human body by visual signal, audible signal or other signals.Its purpose is to be unaware of in other cases or imperceptible physiological activity by handling those, to realize the active control of internal body.For example, after the people enters sleep state, occur snoring or grinding one's teeth in sleep, people self can't recognize, also just can not stop consciously snoring or grinding one's teeth in sleep.And by biofeedback, can or grind one's teeth in sleep and correct snoring.Usually it is believed that the organ that vegetative nerve is arranged can not learn, so can't control, and in fact just can realize the learning process of above-mentioned organ, thereby change the duty of the systems such as breathing, digestion of body by the biofeedback learning training.
Disclosing a kind of biological information feedback snore stopping pillow No. 02125728.0 as Chinese patent, is cushion in the pillowcase of Zhuan Shiing outside, and internal layer is a pillow type fluid cell cover again, and two fluid cell are arranged in it, is fixing circuit board, beat oscillating guide on the fluid cell cover middle frame.Circuit board is electrically connected with acoustic control amplification circuit, relay, intervalometer, brain wave generator, pick up, bat vibration frequency controller, and the coil of beat oscillating guide is by contact and power connection.Beat oscillating guide is by clapping the vibration frequency controller, being fixed in hollow coil in the shell and the hollow coil iron leg magnet and forming.Ferromagnet can move axially in the hollow coil, has air gap between them, and the coil power on/off makes the ferromagnet vibration, and the cycle of vibration is to be determined by the adjustable resistance of clapping the vibration frequency controller.Sound of snoring control starting, the periodic wave that produces certain intensity imports human body into, forms the bio information feedback.Described " bio information feedback " is a self-paging system, is meant to utilize the sound of snoring or device of somniloquy sound starting, produces a kind of signal and feeds back to the patient, reaches the process of psychological hint.Beat oscillating guide is by clapping the vibration frequency controller, be fixed on hollow coil and the interior iron leg magnet composition of hollow coil in the shell, by sound of snoring control starting, producing adjustable vibration.The brain wave generator is astable circuit and a solenoid composition that does not have shielding, by sound of snoring control, can produce the electromagnetic wave of approximate human brain.
No. 02125728.0 disclosed device of this Chinese patent controlled starting by the sound of snoring fully, yet may have various sound in the environment, and this device is difficult to avoid being subjected to the interference of environmental noise, so its functional reliability is lower.
The more important thing is that the vibration that No. 02125728.0 disclosed device of this Chinese patent relies on beat oscillating guide to produce applies external action to the individuality of snoring, it can only play the effect that stops snoring and not have the effect of treatment snoring.
Therefore, provide a kind of novel monitor therapy device to become the problem that industry need solve based on biofeedback.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of biofeedback principle of can utilizing to the snoring or the device of grinding one's teeth in sleep and effectively treating.
A kind of technical scheme of the present utility model is achieved in that provides a kind of monitor therapy device based on biofeedback, comprise the signal gathering unit that is used to gather individual bio signal, connect with signal gathering unit and to be used for bio signal that the received signal collecting unit obtained and the signal processing unit that after analyzing bio signal, sends command signal, and connect the command signal that is used for sending according to signal processing unit applies feedback effect to individuality feedback effect unit with signal processing unit, signal processing unit comprises signal amplification circuit, and the feedback effect unit comprises electric stimulation pulse generating unit and/or audio producing portion.
Preferably, signal gathering unit comprise in the sound of snoring signal acquisition part of the vibration signals collecting portion of electromyographic signal collection portion, throat's muscle of masticatory muscles and snout at least one of them.
Wherein, the sound of snoring signal acquisition part of the vibration signals collecting portion of above-mentioned electromyographic signal collection portion, above-mentioned throat muscle and above-mentioned snout selects for use the surface to paste in electrode, condenser type vibrating sensor and the electret capacitor one or more respectively.
Especially, above-mentioned signal amplification circuit comprises one or more in myoelectricity amplifying circuit, sound signal amplifying circuit and the vibration signal amplifying circuit.
Preferably, above-mentioned audio producing portion comprises music player.
Alternatively, above-mentioned electric stimulation pulse generating unit comprises surface stickup electrode.
And above-mentioned signal processing unit comprises the A/D change-over circuit.
In addition, above-mentioned signal processing unit comprises pulse modulated circuit.
Selectively, above-mentioned feedback effect unit comprises booster circuit.
Particularly, above-mentioned feedback effect unit comprises pulse-generating circuit.
The beneficial effects of the utility model are: (1) is for the patient who snores or grind one's teeth in sleep, this utility model has effectively been avoided implanted snoring or the anti-foreign body sensation that device caused of grinding one's teeth in sleep based on the monitor therapy device of biofeedback, it utilizes surface electrode to produce electricity irritation, boost pulse simulation massage, ortho sleep is not had influence, and can effectively improve patient's sleep quality; (2) this utility model adopts the two-way signals collecting, for example, the vibration signal of while collected sound signal and throat in treatment snoring process, add sound of snoring compartment analysis and the analysis of the sound of snoring frequency of occurrences, can effectively discern the sound of snoring, avoid erroneous judgement, improve the accuracy of sound of snoring identification, may be when only having avoided separately collected sound signal because ambient noise disturbs the error that causes; (3) utilize stimulation that the easypro situation of contracting of muscle is carried out feedback training, for the snoring patient, when the sound of snoring and laryngeal vibration intensity reach certain amplitude and cycle during greater than certain time length, the microprocessor enabling counting, surpass setting threshold and then produce stimulation, bottleneck throat muscle contraction strength is increased, by long-term training, improve the myoelectricity level of bottleneck throat muscle, effectively stop snoring; (4) for the odontorisis patient, surface stimulating electrode surpasses threshold value and electromyographic signal cycle in the electromyographic signal intensity of masticatory muscles and begins effect when continuing greater than Preset Time, carries out feedback training, reduces the myoelectricity level of masticatory muscles, thereby realizes the effective feedback treatment; (5) feature according to different patients can start different stimulus modelities, to satisfy patient's individual demand, realizes treatment targetedly; (6) this utility model also comprises the musical therapy mode, can alleviate patient's intense strain and psychosoma stress, thereby patient's emotion, anxiety reduction and depression are stablized in the adjustment of realization psychology, help the correction of misconduct.
Below in conjunction with drawings and Examples; further specify this utility model; but this utility model is not limited to these embodiment, any on this utility model essence spirit improvement or substitute, still belong to scope required for protection in this utility model claims.
Description of drawings
Fig. 1 is the schematic block circuit diagram of the monitor therapy device based on biofeedback of the present utility model.
Fig. 2 is the myoelectricity amplification circuit diagram of the monitor therapy device based on biofeedback of the present utility model.
Fig. 3 is the sound and the vibration amplification circuit diagram of the monitor therapy device based on biofeedback of the present utility model.
Fig. 4 is the microprocessor portion electrical block diagram of the monitor therapy device based on biofeedback of the present utility model.
Fig. 5 boosts and electrical stimulation circuit figure for the monitor therapy device based on biofeedback of the present utility model.
The specific embodiment
This utility model provides a kind of detection therapy equipment based on biofeedback, it specifically is a kind of device that utilizes the biofeedback principle to carry out snoring and/or prevent to grind one's teeth in sleep, this device is at first gathered small-signal, amplify then, Filtering Processing, the signal of being gathered is divided into three passages: 1, the electromyographic signal of masticatory muscles; 2, the vibration signal of throat's muscle; 3, the sound of snoring signal of snout.The amplification of the electromyographic signal of masticatory muscles and Filtering Processing realize by the amplification of the electromyographic signal shown in Fig. 1, filter circuit 60; The vibration signal of throat's muscle by the vibration signal shown in Fig. 1 pick up, amplification, filter circuit 80 realize; And the sound of snoring signal of snout by the acoustical signal shown in Fig. 1 pick up, amplification, filter circuit 70 realize.The circuit of this device pastes electrode, condenser type vibrating sensor and electret capacitor by the surface and relevant amplifying circuit, signal processing circuit formed; Microprocessor 10 received signals are carried out the A/D conversion and are analyzed comparison, produce the electric stimulation pulse of biofeedback and/or open musical therapy.Above-mentioned electric stimulation pulse and music change along with signal collected variation, and electric stimulation pulse and music control signal are separate, can select according to the setting that button is provided with circuit 50.Electrostimulator adopts surface electrode, and this device comprises signal receiving circuit, pulse modulated circuit, booster circuit 30, pulse-generating circuit.Wherein signal receiving circuit comprises that the signaling interface of microprocessor 10 and the button that button is formed by connecting are provided with circuit 50; Pulse modulated circuit comprises boost pulse width modulation circuit and the boost pulse amplitude modulation circuit by microprocessor 10 controls, thereby can reach the effect of simulation massage; Booster circuit 30 adopts battery powered, utilizes the numeral output of microprocessor 10 that the analog circuit of being made up of electric capacity, inductance, Schottky diode and switching tube is controlled, and microprocessor 10 is controlled the amplitude of boosting by PWM.
Be illustrated in figure 1 as schematic block circuit diagram of the present utility model.Power circuit 20 provides the entire circuit various piece required voltage, comprise the 3.3V voltage that offers single-chip microcomputer, offer signal amplification circuit ± double loop power supply of 3.3V, offer the 3.3V power supply of MP3 playing module, offer the 5V power supply of stimulation circuit 40 and offer liquid crystal display and the 5V power supply of circuit 90.3.3V adopt voltage-regulation chip LM1117 series with 5V ,-3.3V adopts voltage reversal chip IC L7660 to obtain by the 3.3V counter-rotating.In order to guarantee enough output powers, adopt three-way power, the one road supplies with the operational amplifier and the MP3 playing module of single-chip microcomputer, signal processing; One the road supplies with booster circuit 30, provides and boosts, and is used for boost pulse; One the tunnel is used for liquid crystal display.Each chip manufacturer provides the complete circuit of power supply chip control circuit, does not repeat them here.The signal of being gathered is after the A/D of microprocessor 10 conversion, monitor sound or the signal of grinding one's teeth in sleep, carry out T/F analysis and analysis of accounts, when judging snoring or grind one's teeth in sleep generation, stimulation circuit 40 produces biofeedback signals, utilizes to stimulate the easypro situation of contracting of muscle is carried out feedback training.Concrete running is as follows, for the snoring patient, when the sound of snoring and laryngeal vibration intensity reach certain amplitude and cycle during greater than certain time length, microprocessor 10 enabling countings, surpass setting threshold and then produce stimulation, bottleneck throat muscle contraction strength is increased, by long-term training, improve the myoelectricity level of bottleneck throat muscle, effectively stop snoring; For the odontorisis patient, surface stimulating electrode surpasses threshold value and electromyographic signal cycle in the electromyographic signal intensity of masticatory muscles and begins effect when continuing greater than Preset Time, carries out feedback training, reduces the myoelectricity level of masticatory muscles, thereby realizes feedback treating.
Fig. 2 is a myoelectricity amplification circuit diagram of the present utility model.Most physiological signals are in low-frequency range, and the electromyographic signal concentration of energy is below 2KHz, and is fainter, and generally about the millivolt level, and various physiological signal is often mixed in together.Utilize the above-mentioned feature of electromyographic signal, design myoelectricity circuit as shown in Figure 2.The instrument amplifier AD620 of high input impedance is adopted in preposition amplification, and low-pass filter circuit is set, the interference of anti-stop signal high-frequency noises, and the signal that is lower than 4KHz allows to pass through; High-pass filtering circuit is set, and the signal that is higher than 4Hz allows to pass through.Mid portion is a power frequency notch filter, suppresses power frequency and disturbs.Signal amplifies the peak-to-peak amplitude peak of postpeak less than 3V through three grades, sends into single-chip microcomputer and carries out relevant treatment.
Fig. 3 is sound of the present utility model and vibration signal amplification circuit diagram.Convert acoustical signal and vibration signal to ultra-weak electronic signal by electret capacitor and condenser type vibrating sensor, by high-pass filtering circuit of forming by R19 and C13 and the two-stage amplifying circuit of forming by operational amplifier LM324, undertaken sending into microprocessor 10 after the halfwave rectifier by diode D1 and handle.
Fig. 4 is a microprocessor portion electrical block diagram of the present utility model.Comprising single-chip microcomputer reset, A/D conversion, serial communication, MP3 control, PWM generation, LCD Controller, boost pulse produce, button is provided with etc.A/D changes by port P6.3, P6.4, and P6.5 inserts; Serial communication is by port P3.4 and P3.5 control; Port P5.0-P5.4 controls LCD driver, and LCD driver adopts the uPD16682 of NEC Corporation; The broadcast state of port P2.0-P2.5 control MP3, MP3 can select sophisticated module on the market for use; Port P1.0, P1.1 produces boost pulse; Port P4.1 produces PWM, utilizes the difference of dutycycle, regulates the output voltage of booster circuit 30; Port P3.0-P3.3 receives the input of button, and the sound of snoring feature and different electrical stimulation pattern of Different Individual is set.The MSP430F14X series microprocessor allows the user to use standard C language to carry out programming, and C language translation and compiling environment efficiently is provided, and helps the design of various recognizers of the present utility model.
Fig. 5 for of the present utility modelly boost, electricity irritation and key circuit figure.Wherein realize boosting by following process: by the PWM of little processing P4.1 port output, gauge tap pipe QC break-make is set the relation of output voltage V SS and input voltage VCC1 by regulating dutycycle.The cycle of supposing switching tube is T, and the time of conducting is T
0, the time that ends is T
1, dutycycle is D (D=T
0/ T).The operation principle of booster circuit 30 is: when switching tube QC conducting, and Schottky diode DC reverse bias and ending, input voltage VCC1 is added to the two ends of energy storage inductor LD.When switching tube QC ends, the polarity of voltage at energy storage inductor LD two ends is opposite, Schottky diode DC forward bias and conducting, the energy that is stored among the energy storage inductor LD is transferred to filter capacitor CD by diode DC, this moment, the electric current of energy storage inductor LD reduced, because the quantity dynamic equilibrium of electric current on the inductance can obtain following relational expression:
With T
0=T.D and
Substitution following formula and abbreviation, arrangement can get
Because D is all the time less than 1, output voltage always greater than input voltage, from following formula as can be known, is regulated the size that dutycycle can change output voltage.
Realize that by following process impulse stimulation: S1 and S2 receive the port P1.0 and the P1.1 of microprocessor 10 respectively, STIM1 is connected the surface electrode that is pasted on stimulation location respectively with STIM2.When S1 is a high level, when S2 is low level, transistor Q1 conducting, transistor Q5 ends, thus transistor Q3 and Q6 conducting, and transistor Q2 and Q4 end; When S2 is a high level, when S1 is low level, transistor Q5 conducting, transistor Q1 ends, thus transistor Q2 and Q4 conducting, and transistor Q3 and Q6 end, and realize electric pulse stimulation by this alternate conduction, cut-off mode.Various massage effects such as the pulsewidth that stimulates by control and the frequency of stimulation can simulate and beat, acupuncture.
Realize that by following process button is provided with circuit 50: come the on off operating mode of control circuit by button, press both sides and promptly form short circuit, unclamp and promptly form open circuit.Microprocessor 10 is by judging whether short circuit, thereby knows whether this button is pressed.Different characteristics according to different patients' the sound of snoring is provided with button circuit 50 is set, and sets in advance by MPI.Before gathering, the alternative sounds frequency spectrum and the amplitude characteristic of individual patients is stored in the microprocessor 10, in use start different stimulus modelities, to realize adapting to the biofeedback of personal feature according to different sound of snoring features.
The beneficial effects of the utility model are: (1) is for the patient who snores or grind one's teeth in sleep, the foreign body sensation that the utility model has effectively avoided implanted snore relieving or the anti-device of grinding one's teeth in sleep to cause based on the monitor therapy device of biofeedback, it utilizes surface electrode to produce electro photoluminescence, boost pulse simulation massage, ortho is not had impact, and can effectively improve patient's sleep quality; (2) the utility model adopts the two-way signals collecting, for example, the vibration signal of while collected sound signal and throat in treatment snoring process, add sound of snoring compartment analysis and the analysis of the sound of snoring frequency of occurrences, can effectively identify the sound of snoring, avoid erroneous judgement, the accuracy of raising sound of snoring identification may be because the error that the ambient noise interference causes when having avoided only independent collected sound signal; (3) utilize stimulation that the easypro contracting situation of muscle is carried out feedback training, for the snoring patient, when the sound of snoring and laryngeal vibration intensity reach certain amplitude and cycle during greater than certain time length, microprocessor starts counting, surpass setting threshold and then produce stimulation, bottleneck throat contraction of muscle strength is increased, by long-term training, improve the myoelectricity level of bottleneck throat muscle, effectively stop snoring; (4) for the bruxism patient, surface stimulating electrode surpasses threshold value and electromyographic signal cycle in the electromyographic signal intensity of masseter and begins effect when continuing greater than Preset Time, carry out feedback training, reduce the myoelectricity level of masseter, thereby realize effective feedback treating; (5) feature according to different patients can start different stimulus modalities, to satisfy patient's individual demand, realizes targetedly treatment; (6) the utility model also comprises the musical therapy mode, can alleviate patient's intense strain and psychosoma stress reaction, thereby patient's mood, anxiety reduction and depression are stablized in the adjustment of realization psychology, are conducive to the correction of bad behavior.
Claims (10)
1. monitor therapy device based on biofeedback, comprise the signal gathering unit that is used to gather individual bio signal, connect with described signal gathering unit and to be used to receive bio signal that described signal gathering unit obtains and the signal processing unit that after analyzing bio signal, sends command signal, and connect the command signal that is used for sending according to described signal processing unit applies feedback effect to individuality feedback effect unit with described signal processing unit, it is characterized in that, described signal processing unit comprises signal amplification circuit, and described feedback effect unit comprises electric stimulation pulse generating unit and/or audio producing portion.
2. the monitor therapy device based on biofeedback as claimed in claim 1, it is characterized in that, described signal gathering unit comprise in the sound of snoring signal acquisition part of the vibration signals collecting portion of electromyographic signal collection portion, throat's muscle of masticatory muscles and snout at least one of them.
3. the monitor therapy device based on biofeedback as claimed in claim 2, it is characterized in that the vibration signals collecting portion of described electromyographic signal collection portion, described throat muscle and the sound of snoring signal acquisition part of described snout select for use the surface to paste in electrode, condenser type vibrating sensor and the electret capacitor one or more respectively.
4. as the described monitor therapy device of one of claim 1-3, it is characterized in that described signal amplification circuit comprises one or more in myoelectricity amplifying circuit, sound signal amplifying circuit and the vibration signal amplifying circuit based on biofeedback.
5. as the described monitor therapy device of one of claim 1-3, it is characterized in that described audio producing portion comprises music player based on biofeedback.
6. as the described monitor therapy device of one of claim 1-3, it is characterized in that described electric stimulation pulse generating unit comprises surface stickup electrode based on biofeedback.
7. as the described monitor therapy device of one of claim 1-3, it is characterized in that described signal processing unit comprises the A/D change-over circuit based on biofeedback.
8. as the described monitor therapy device of one of claim 1-3, it is characterized in that described signal processing unit comprises pulse modulated circuit based on biofeedback.
9. as the described monitor therapy device of one of claim 1-3, it is characterized in that described feedback effect unit comprises booster circuit based on biofeedback.
10. as the described monitor therapy device of one of claim 1-3, it is characterized in that described feedback effect unit comprises pulse-generating circuit based on biofeedback.
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| CN104427933A (en) * | 2012-06-29 | 2015-03-18 | 盛势达瑞士股份公司 | Gel pad dispenser |
| CN103127596A (en) * | 2013-01-18 | 2013-06-05 | 李兴武 | Ion sound control hypnosis health care pillow capable of preventing snoring |
| CN103300960A (en) * | 2013-05-29 | 2013-09-18 | 范军 | Resonance sound producing snore stopping pillow |
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