US3563229A - Cardiac sound simulator - Google Patents

Cardiac sound simulator Download PDF

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US3563229A
US3563229A US678107A US3563229DA US3563229A US 3563229 A US3563229 A US 3563229A US 678107 A US678107 A US 678107A US 3563229D A US3563229D A US 3563229DA US 3563229 A US3563229 A US 3563229A
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pulses
pulse
univibrator
time
pair
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US678107A
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Erling Olav Valdemar Petrusson
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Telefonaktiebolaget LM Ericsson AB
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63H—TOYS, e.g. TOPS, DOLLS, HOOPS OR BUILDING BLOCKS
    • A63H3/00—Dolls
    • A63H3/001—Dolls simulating physiological processes, e.g. heartbeat, breathing or fever
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316—Modalities, i.e. specific diagnostic methods
    • A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
    • A61B5/319—Circuits for simulating ECG signals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M21/00—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63H—TOYS, e.g. TOPS, DOLLS, HOOPS OR BUILDING BLOCKS
    • A63H3/00—Dolls
    • A63H3/003—Dolls specially adapted for a particular function not connected with dolls
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
    • H03K3/28—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback
    • H03K3/281—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator
    • H03K3/282—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator astable
    • H03K3/2823—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator astable using two active transistor of the same conductivity type
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M21/00—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis
    • A61M2021/0005—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis by the use of a particular sense, or stimulus
    • A61M2021/0027—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis by the use of a particular sense, or stimulus by the hearing sense
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M21/00—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis
    • A61M2021/0005—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis by the use of a particular sense, or stimulus
    • A61M2021/0061—Simulated heartbeat pulsed or modulated

Definitions

  • the simulator comprises a pulse generator which generates pulses in pairs. The time between the pulses in each pair being less than the time between pairs and the two pulses of a pair having different time durations. The pulses are fed to a loudspeaker which converts the pulses to a sound having the rhythm of a heartbeat.
  • the present invention relates to a toy in which is built in a double pulse generator for producing cardiac sounds (heart sounds).
  • An object of the invention is to provide an arrangement that can be used for purely medical purposes and'for making toys more lifelike whereby a toy provided'with the arrangement can be used for medical purposes.
  • FIG. 1 is a block diagram of a sound generator
  • FIG. 2a is a circuit diagram of such a generator
  • FIG. 2b is a diagram of the voltages V V as a function of time and said generatonand
  • FIG. 3 shows the generator mounted in a doll.
  • the cardiac sound simulator consists of a double-pulse generator which runs a miniature load speaker, and is intended to be mounted in dolls, animals and similar toys.
  • a simulator according to the present invention By mounting a simulator according to the present invention in the toy animal or in the doll that the child is in the habit of having in bed, the result can be achieved that a child having difiiculty in relaxing will listen to the regularly beating heart of the doll and thanks to that it will be appeased and falls asleep.
  • the simulator Besides that the simulator possesses certain soothing properties, it gives also the toy in which it is mounted an illusion of life, which in its turn makes the toy in question more attractive.
  • the frequency spectrum can be varied because the duration of the two pulses and the duration of the intermediate spaces can be varied within wide limits. These periods are determined by time constants (RC) in the generator. Thanks to the design of the transistor the wear and tearis small and the consumption of current will be low.
  • RC time constants
  • the block diagram of FIG. 1 shows the principle of the construction.
  • the voltage unit is composed of a flashlight battery.
  • An oscillator consisting of an astable multivibrator delivers 2 pulses per period.
  • the pulses start with a transient and are turned into an exponential function.
  • the pulses give sounds, substantially at the time of the transient.
  • the exponential function is long and would demand a very great etfective power if this should run the loud speaker.
  • the power that can be converted into sound, is small.
  • the pulse may therefore first pass to a pulse former of the univibrator type. For each transient appearing on one of the inputs of the univibrator, a short square pulse is delivered on the output.
  • the square pulses are amplified in an output stage of a Darlington circuit and pass through the sound control to the loud speaker where they are transfonned into sound.
  • FIG. 2a shows an example of a circuit diagram
  • FIG. 2b the waveforms of the voltages at four different points in the circuit.
  • the pulses from the astable multivibrator are selected on the bases of the transistors. They are reproduced in the diagrams V, f (t) and V f (t).
  • the periods T and T are determined by the time constants R C and R C respectively.
  • the negative transients trigger the univibrator.
  • the transistor current will be interrupted for a time (T or T determined by C ,C, and R During this time the collector voltage V;, will rise. This generates a positive pulse which passes to the Darlington circuit.
  • This circuit has a high input impedance and a low output impedance.
  • the voltage amplification is less than 1 (see V f (t), but because of the high current amplification the power amplification will also be high.
  • the potentiometer connected in series with the loud speaker serves as volume control.
  • the generator can be built very much simpler and in a smaller size but the price will then be higher.
  • a unijunction transistor can be used in the oscillator and a tunnel diode in the pulse formerl Integrated circuits can also be considered.
  • Button cells can replace the flashlight battery.
  • a crystal loud speaker is used instead of a loud speaker of the dynamic type, which is the case in the embodiment described above.
  • the loading effect can be decreased to approximately one-fiftieth in comparison with dynamic loud speakers.
  • a crystal loudspeaker has, however, a somewhat inferior sound quality, which in this case is of no importance.
  • the circuit In order to make it possible to use crystal loud speakers the circuit must be changed for example in the following manner: (See FIG. 2a).
  • the univibrator, the Darlington circuit and the dynamic loud speaker are omitted.
  • the crystal loud speaker is connected to the collectors of the transistors in the astable multivibrator.
  • the sound generator is built into a doll.
  • a voltage source 1 supplies voltage through a switch 2, enabling the generator 3 to be con nected or disconnected to the voltage source 1 (battery).
  • the sound pulses are produced in a loud speaker 4.
  • a toy comprising:
  • said sound generator comprising pulse generating means for periodically generating pairs of electrical! pulses, wherein the first occurring pulse of each pair has a shorter time dura tion than the second occurring pulse of said pair and the time between pulses of each pair being less than the time between adjacent pairs of pulses;
  • said pulse generating means comprising a free-running astable and asymmetrical multivibrator having first and second outputs wherein said first output transmits a first train of pulses having a given time duration and said second output transmits a second train of pulses, complementary to said first train of pulses, and having a time duration greater than said given time duration;
  • univibrator having first and second inputs connected to said first and second outputs, respectively, of said multivibrator for receiving said first and second trains of pulses simultaneously, said univibrator generating a pulse in response to each received pulse, the duration of each generated pulse being equal to the time between the leading edge of a received pulse and a particular point on the trailing edge of said received pulse;
  • transducer means receiving said electrical pulses for emitting sounds occurring at the leading and trailing edges of said pulses so that the sounds occurring in response to one pulse of the pair are heard as a sound with a first tone and the sounds occurring in response to the other pulse of the pair are heard as a sound with a second tone different from said first tone.
  • the pulses of said first and second trains of pulses have a sawtooth shape and the pulses generated by said univibrator have durations equal to the time between one of the edges of a received pulse and the time when the other edge of said received pulse has a given signal level so that the pulses generated by said univibrator in response to the received first train of pulses have a different time duration than the pulses generated by said univibrator in response to the received second train of pulses.
  • transducer means comprises an amplifier having a high input impedance and a low output impedance, a loudspeaker connected to the output of said amplifier and means for connecting the input of said amplifier to the output of said univibrator.

Abstract

Incorporated within a toy is a cardiac sound simulator. The simulator comprises a pulse generator which generates pulses in pairs. The time between the pulses in each pair being less than the time between pairs and the two pulses of a pair having different time durations. The pulses are fed to a loudspeaker which converts the pulses to a sound having the rhythm of a heartbeat.

Description

United States Patent [72] Inventor Erling Olav Valdemar Petrusson Uppsala, Sweden [21] Appl. No. 678,107
[22] Filed Oct. 25, 1967 [45] Patented Feb. 16, 1971 [73] Assignee Telefonaktiebolaget L M Ericsson Stockholm, Sweden [32] Priority Oct. 27, 1966 i [33] Sweden [54] CARDIAC SOUND SIMULATOR 3 Claims, 4 Drawing Figs.
[51] 1nt.Cl ..A61b19/00 [50] Field ofSearch ..128/1, 1.03; 119/1;46/232;331/113 [56] References Cited UNITED STATES PATENTS 3,316,491 4/ 1967 Berman et a1 307/268X 3,323,068 5/1967 Woods 328/127X 3,469,115 9/1969 Partridge... 331/1 13X 11/1958 Sutton 119/1 3,024,568 3/1962 Barnett 46/232 3,137,092 6/1964 Salerno 128/1 3,384,074 5/1968 Rautiola et a1 128/1 FOREIGN PATENTS 255,790 1 l/l 962 Australia 128/1 .03
1,302,277 7/1962 France 128/1.03
1,030,980 5/1966 Great Britain 46/232 OTHER REFERENCES Fairchild publication 1960 331-113 Garner Popular Electronics, Vol 22, #2 Feb. 1965 pg. 78 331-113 Hoppe EEE Circuit Design Engr. Feb. 1967 pp 147-148 33l-1 13 Primary Examiner-Dalton L. Truluck Attorney-Plane and Baxley ABSTRACT: Incorporated within a toy is a cardiac sound simulator. The simulator comprises a pulse generator which generates pulses in pairs. The time between the pulses in each pair being less than the time between pairs and the two pulses of a pair having different time durations. The pulses are fed to a loudspeaker which converts the pulses to a sound having the rhythm of a heartbeat.
CARDIAC SOUND SIMULATOR The present invention relates to a toy in which is built in a double pulse generator for producing cardiac sounds (heart sounds).
It is known that a child can perceive sounds from a heart and also can distinguish nuances. A certain cardiac sound (very likely with a low frequency) acts soothingly. About this L & M Milne writes the following on page 46 of the book: "The Senses of Animals and Men.
Does a human baby listen to its mother before birth I Recently, linguists have wondered about the lub-dupp, lubdupp, lub-dupp from the mother's heartbeat. Primitive languages are full of repeat-syllabled words, comparable to familiar baby talk: dada, ma-rna, gee-gee. Perhaps we are born with a strong preference for sounds in pairs, imitating the comforting sequence heard in the womb.
When you come to think about it, you realize that in most human societies a baby has a chance to listen to its mothers heart after birth too. She holds the child in her arms with its ear pressed against her chest, or she protects it under her blanket on her back, with its ear flattened against her skin between her shoulder blades. Surely the. baby can hear as well as a doctor with a stethoscope cupped against these areas. We may yet discover an importance for a mother's heart sounds in the normal development of the child.
The soft lub-dupp, lub-dupp of a relaxed mother's heartbeat was played recently over the loudspeaker system into a nursery room full of newborn babies. Outsidethe big picture window, a hospital technician with a clipboard kept a tally on the youngsters in the bassinets. Most of them soon went off to sleep. The rest appeared reasonably contented. The recording stopped. Within a few seconds a good many babies woke up; some began to cry. Then a new record was played: the rapid heartbeat from an excited woman. The sound was no louder, but all of the sleeping babies awoke immediately. Every infant grew tense, as though in fear. When the first recording was played again peace spread through the nursery. Are its mothers heartbeat sounds a babys first mood music I An object of the invention is to provide an arrangement that can be used for purely medical purposes and'for making toys more lifelike whereby a toy provided'with the arrangement can be used for medical purposes.
The invention will be describedbelow with reference to the accompanying drawing on which FIG. 1 is a block diagram of a sound generator, FIG. 2a is a circuit diagram of such a generator, FIG. 2b is a diagram of the voltages V V as a function of time and said generatonand FIG. 3 shows the generator mounted in a doll.
The cardiac sound simulator consists of a double-pulse generator which runs a miniature load speaker, and is intended to be mounted in dolls, animals and similar toys.
As appears from the introduction, investigations have been made which prove that there is a connection between external heart sounds and the mental condition of small children. Thus it has been found that when a child listens to calm heart sounds, it will be comfortable in its mind and falls asleep while the child wakes up showing obvious signs of anxiety if the heart sound grows louder or is more rapid.
By mounting a simulator according to the present invention in the toy animal or in the doll that the child is in the habit of having in bed, the result can be achieved that a child having difiiculty in relaxing will listen to the regularly beating heart of the doll and thanks to that it will be appeased and falls asleep.
Besides that the simulator possesses certain soothing properties, it gives also the toy in which it is mounted an illusion of life, which in its turn makes the toy in question more attractive.
The frequency spectrum can be varied because the duration of the two pulses and the duration of the intermediate spaces can be varied within wide limits. These periods are determined by time constants (RC) in the generator. Thanks to the design of the transistor the wear and tearis small and the consumption of current will be low. A prototype with the following periods (see FIG. 2) has been built: T =0, l 2 s, T, is, T,== 3
ms, T 10 ms. A decrease of the operating voltage from 4.5 v. to 3 v. did not change the frequency audibly. When adjusting the sound intensity so that it was comparable to the ticking of an alarm clock, the consumption of current was about 2ma.
The block diagram of FIG. 1 shows the principle of the construction. The voltage unit is composed of a flashlight battery. An oscillator consisting of an astable multivibrator delivers 2 pulses per period. The pulses start with a transient and are turned into an exponential function. The pulses give sounds, substantially at the time of the transient. The exponential function is long and would demand a very great etfective power if this should run the loud speaker. The power that can be converted into sound, is small. The pulse may therefore first pass to a pulse former of the univibrator type. For each transient appearing on one of the inputs of the univibrator, a short square pulse is delivered on the output. The square pulses are amplified in an output stage of a Darlington circuit and pass through the sound control to the loud speaker where they are transfonned into sound.
FIG. 2a shows an example of a circuit diagram, and FIG. 2b the waveforms of the voltages at four different points in the circuit. The pulses from the astable multivibrator are selected on the bases of the transistors. They are reproduced in the diagrams V, f (t) and V f (t). The periods T and T, are determined by the time constants R C and R C respectively. The negative transients trigger the univibrator. In this case the transistor current will be interrupted for a time (T or T determined by C ,C, and R During this time the collector voltage V;, will rise. This generates a positive pulse which passes to the Darlington circuit. This circuit has a high input impedance and a low output impedance. The voltage amplification is less than 1 (see V f (t), but because of the high current amplification the power amplification will also be high. The potentiometer connected in series with the loud speaker serves as volume control.
Other embodiments than that one described here can be re garded. The generator can be built very much simpler and in a smaller size but the price will then be higher. For example, a unijunction transistor can be used in the oscillator and a tunnel diode in the pulse formerl Integrated circuits can also be considered. Button cells can replace the flashlight battery.
As a modification of the invention a crystal loud speaker is used instead of a loud speaker of the dynamic type, which is the case in the embodiment described above. By using a crystal loudspeaker the loading effect can be decreased to approximately one-fiftieth in comparison with dynamic loud speakers. A crystal loudspeaker has, however, a somewhat inferior sound quality, which in this case is of no importance.
In order to make it possible to use crystal loud speakers the circuit must be changed for example in the following manner: (See FIG. 2a). The univibrator, the Darlington circuit and the dynamic loud speaker are omitted. The crystal loud speaker is connected to the collectors of the transistors in the astable multivibrator.
In the embodiment of the'i nvention shown in FIG. 3 the sound generator is built into a doll. A voltage source 1 supplies voltage through a switch 2, enabling the generator 3 to be con nected or disconnected to the voltage source 1 (battery). The sound pulses are produced in a loud speaker 4.
Iclaim:
l. A toy comprising:
at least a body portion;
a sound generator within said body portion; said sound generator comprising pulse generating means for periodically generating pairs of electrical! pulses, wherein the first occurring pulse of each pair has a shorter time dura tion than the second occurring pulse of said pair and the time between pulses of each pair being less than the time between adjacent pairs of pulses;
said pulse generating means comprising a free-running astable and asymmetrical multivibrator having first and second outputs wherein said first output transmits a first train of pulses having a given time duration and said second output transmits a second train of pulses, complementary to said first train of pulses, and having a time duration greater than said given time duration;
univibrator having first and second inputs connected to said first and second outputs, respectively, of said multivibrator for receiving said first and second trains of pulses simultaneously, said univibrator generating a pulse in response to each received pulse, the duration of each generated pulse being equal to the time between the leading edge of a received pulse and a particular point on the trailing edge of said received pulse; and
transducer means receiving said electrical pulses for emitting sounds occurring at the leading and trailing edges of said pulses so that the sounds occurring in response to one pulse of the pair are heard as a sound with a first tone and the sounds occurring in response to the other pulse of the pair are heard as a sound with a second tone different from said first tone.
2. The toy of claim 1 whereinthe pulses of said first and second trains of pulses have a sawtooth shape and the pulses generated by said univibrator have durations equal to the time between one of the edges of a received pulse and the time when the other edge of said received pulse has a given signal level so that the pulses generated by said univibrator in response to the received first train of pulses have a different time duration than the pulses generated by said univibrator in response to the received second train of pulses.
3. The toy of claim 2 wherein said transducer means comprises an amplifier having a high input impedance and a low output impedance, a loudspeaker connected to the output of said amplifier and means for connecting the input of said amplifier to the output of said univibrator.

Claims (3)

1. A toy comprising: at least a body portion; a sound generator within said body portion; said sound generator comprising pulse generating means for periodically generating pairs of electrical pulses, wherein the first occurring pulse of each pair has a shorter time duration than the second occurring pulse of said pair and the time between pulses of each pair being less than the time between adjacent pairs of pulses; said pulse generating means comprising a free-running astable and asymmetrical multivibrator having first and second outputs wherein said first output transmits a first train of pulses having a given time duration and said second output transmits a second train of pulses, complementary to said first train of pulses, and having a time duration greater than said given time duration; a univibrator having first and second inputs connected to said first and second outputs, respectively, of said multivibrator for receiving said first and second trains of pulses simultaneously, said univibrator generating a pulse in response to each received pulse, the duration of each generated pulse being equal to the time between the leading edge of a received pulse and a particular point on the trailing edge of said received pulse; and transducer means receiving said electrical pulses for emitting sounds occurring at the leading and trailing edges of said pulses so that the sounds occurring in response to one pulse of the pair are heard as a sound with a first tone and the sounds occurring in response to the other pulse of the pair are heard as a sound with a second tone different from said first tone.
2. The toy of claim 1 wherein the pulses of said first and second trains of pulses have a sawtooth shape and the pulses generated by said univibrator have durations equal to the time between one of the edges of a received pulse and the time when the other edge of said received pulse has a given signal level so that the pulses generated by said univibrator in response to the received first train of pulses have a different time duration than the pulses generated by said univibrator in response to the received second train of pulses.
3. The toy of claim 2 wherein said transducer means comprises an amplifier having a high input impedance and a low output impedance, a loudspeaker connected to the output of said amplifier and means for connecting the input of said amplifier to the output of said univibrator.
US678107A 1966-10-27 1967-10-25 Cardiac sound simulator Expired - Lifetime US3563229A (en)

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US3888233A (en) * 1974-01-17 1975-06-10 Kamar Inc Figure with simulated heartbeat
US3994282A (en) * 1974-09-12 1976-11-30 Bioengineering Research Heart-beat electronic simulator
US4124022A (en) * 1977-01-14 1978-11-07 Sam Gross Heart novelty and relaxation device
US4249338A (en) * 1979-11-26 1981-02-10 Howard Wexler Doll with sound generator and plural switch means
US4257408A (en) * 1979-07-10 1981-03-24 Carol Ramey Cushioned structure and method of testing thereof
US4606328A (en) * 1983-06-16 1986-08-19 Thoman Evelyn B Method and apparatus for treating breathing irregularities
WO1987004934A1 (en) * 1986-02-21 1987-08-27 Sablequest Pty. Ltd. Sleep inducing device
WO1987006487A1 (en) * 1986-05-02 1987-11-05 Vladimir Sirota Toy
US4718876A (en) * 1985-10-07 1988-01-12 Lee Min J Child calming toy with rythmic stimulation
US4969867A (en) * 1987-08-14 1990-11-13 Pama Electronics Sleep-promoting and/or pacification apparatus
US5415579A (en) * 1991-04-24 1995-05-16 Concepts Development Australia Pty Ltd Doll with pivoting eyeballs, heart beat, voice means, burping sounds and actuating transmitter
US20040077287A1 (en) * 2002-08-19 2004-04-22 Odiwo Edith Lamira Infant nurturing medical device
US20080027694A1 (en) * 2006-07-12 2008-01-31 Yury Michael Gitman Heartbeat Simulation Method And Apparatus
US20090278475A1 (en) * 2008-05-08 2009-11-12 Michael Clow Heartbeat emulating lighted device
GB2586458A (en) * 2019-08-16 2021-02-24 Rawlinson Jasmine Tactile sensory device for use by a baby or child
US11213761B2 (en) * 2020-04-21 2022-01-04 Mary M. Lyell Comforting device
US11433316B1 (en) * 2021-03-02 2022-09-06 Encompass Pet Group, Llc Artificial heartbeat generator device with automatic control system

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ES475246A1 (en) * 1978-11-20 1979-04-16 Onil Fab Agrup De Munecas Electromechanical heart beat simulator for doll - has electromagnet controlled by time circuit to move hammer to=and=fro in plastics housing inside doll's body
FR2458290B1 (en) * 1979-06-05 1988-05-27 Faure Georges SOUND ATMOSPHERE SIMULATOR FOR CALMING INFANTS
EP0218182B1 (en) * 1985-10-07 1992-04-15 Min Joo Lee A child calming toy with rhythmic stimulation
WO1991013647A1 (en) * 1990-03-12 1991-09-19 Sleeptime International (Baby Products) Pty. Limited Sleep inducing device

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Cited By (19)

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Publication number Priority date Publication date Assignee Title
US3888233A (en) * 1974-01-17 1975-06-10 Kamar Inc Figure with simulated heartbeat
US3994282A (en) * 1974-09-12 1976-11-30 Bioengineering Research Heart-beat electronic simulator
US4124022A (en) * 1977-01-14 1978-11-07 Sam Gross Heart novelty and relaxation device
US4257408A (en) * 1979-07-10 1981-03-24 Carol Ramey Cushioned structure and method of testing thereof
US4249338A (en) * 1979-11-26 1981-02-10 Howard Wexler Doll with sound generator and plural switch means
US4606328A (en) * 1983-06-16 1986-08-19 Thoman Evelyn B Method and apparatus for treating breathing irregularities
US4718876A (en) * 1985-10-07 1988-01-12 Lee Min J Child calming toy with rythmic stimulation
WO1987004934A1 (en) * 1986-02-21 1987-08-27 Sablequest Pty. Ltd. Sleep inducing device
WO1987006487A1 (en) * 1986-05-02 1987-11-05 Vladimir Sirota Toy
US4969867A (en) * 1987-08-14 1990-11-13 Pama Electronics Sleep-promoting and/or pacification apparatus
US5415579A (en) * 1991-04-24 1995-05-16 Concepts Development Australia Pty Ltd Doll with pivoting eyeballs, heart beat, voice means, burping sounds and actuating transmitter
US20040077287A1 (en) * 2002-08-19 2004-04-22 Odiwo Edith Lamira Infant nurturing medical device
US6918770B2 (en) 2002-08-19 2005-07-19 Brightwave Enterprises, Llc Infant nurturing medical device
US20080027694A1 (en) * 2006-07-12 2008-01-31 Yury Michael Gitman Heartbeat Simulation Method And Apparatus
US20090278475A1 (en) * 2008-05-08 2009-11-12 Michael Clow Heartbeat emulating lighted device
GB2586458A (en) * 2019-08-16 2021-02-24 Rawlinson Jasmine Tactile sensory device for use by a baby or child
GB2586458B (en) * 2019-08-16 2023-09-27 Rawlinson Jasmine Tactile sensory device for use by a baby or child
US11213761B2 (en) * 2020-04-21 2022-01-04 Mary M. Lyell Comforting device
US11433316B1 (en) * 2021-03-02 2022-09-06 Encompass Pet Group, Llc Artificial heartbeat generator device with automatic control system

Also Published As

Publication number Publication date
DE1603635A1 (en) 1971-08-05
FR1557709A (en) 1969-01-13
SE313518B (en) 1969-08-11

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