WO2008128531A1 - Verfahren und vorrichtung zur messung der stimulierten herzratenvariabilität - Google Patents
Verfahren und vorrichtung zur messung der stimulierten herzratenvariabilität Download PDFInfo
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- WO2008128531A1 WO2008128531A1 PCT/DE2008/000697 DE2008000697W WO2008128531A1 WO 2008128531 A1 WO2008128531 A1 WO 2008128531A1 DE 2008000697 W DE2008000697 W DE 2008000697W WO 2008128531 A1 WO2008128531 A1 WO 2008128531A1
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- Prior art keywords
- heart rate
- rate variability
- measurement
- measuring
- user
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000005259 measurement Methods 0.000 claims description 63
- 230000000638 stimulation Effects 0.000 claims description 22
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 14
- 238000007689 inspection Methods 0.000 claims description 4
- 230000002596 correlated effect Effects 0.000 claims description 3
- 230000000875 corresponding effect Effects 0.000 description 19
- 230000015654 memory Effects 0.000 description 14
- 238000011156 evaluation Methods 0.000 description 12
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- 238000003825 pressing Methods 0.000 description 11
- 238000010183 spectrum analysis Methods 0.000 description 6
- 230000033764 rhythmic process Effects 0.000 description 5
- 208000004301 Sinus Arrhythmia Diseases 0.000 description 4
- 238000011990 functional testing Methods 0.000 description 4
- 230000036387 respiratory rate Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 238000009532 heart rate measurement Methods 0.000 description 3
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- 238000012544 monitoring process Methods 0.000 description 2
- 210000001002 parasympathetic nervous system Anatomy 0.000 description 2
- 238000012372 quality testing Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 210000003403 autonomic nervous system Anatomy 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000000747 cardiac effect Effects 0.000 description 1
- 210000000748 cardiovascular system Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
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- 206010012601 diabetes mellitus Diseases 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/024—Detecting, measuring or recording pulse rate or heart rate
- A61B5/02416—Detecting, measuring or recording pulse rate or heart rate using photoplethysmograph signals, e.g. generated by infrared radiation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/024—Detecting, measuring or recording pulse rate or heart rate
- A61B5/02405—Determining heart rate variability
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/024—Detecting, measuring or recording pulse rate or heart rate
- A61B5/02438—Detecting, measuring or recording pulse rate or heart rate with portable devices, e.g. worn by the patient
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/48—Other medical applications
- A61B5/4884—Other medical applications inducing physiological or psychological stress, e.g. applications for stress testing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6813—Specially adapted to be attached to a specific body part
- A61B5/6814—Head
- A61B5/6815—Ear
- A61B5/6816—Ear lobe
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/362—Heart stimulators
- A61N1/365—Heart stimulators controlled by a physiological parameter, e.g. heart potential
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/362—Heart stimulators
- A61N1/365—Heart stimulators controlled by a physiological parameter, e.g. heart potential
- A61N1/36592—Heart stimulators controlled by a physiological parameter, e.g. heart potential controlled by the heart rate variability
Definitions
- Heart rate variability is the variability in heart rate from heartbeat to heartbeat. This can be calculated and specified by suitable mathematical methods, for example by a standard deviation, in particular the time interval between the individual heart beats.
- the heart rate variability is the mathematical correlate to the permanent adjustment of the heart rate to changing requirements in the human organism and is in particular also an expression of the neuro-vegetative regulatory ability of a human body.
- heart rate variability is determined as the result of various neurophysiological functional tests performed at specialized centers or institutions. These functional tests usually include the Ewing test, the Valsalva maneuver, the respiratory sinus arrhythmia, and / or a short-term heart rate variability measurement at rest as testing procedures.
- the patient himself performs stimulations on his cardiovascular system as directed by an examiner, resulting in characteristic changes in heart rate.
- the Ewing test asks the patient to get up quickly from lying down.
- Valsalva maneuver he is instructed to exhale firmly with the larynx lid closed, thus creating overpressure in the chest.
- the patient is given a slow respiratory rhythm with approximately Reuther P02602WO
- the short-term heart rate variability measurement at rest includes the determinations of heart rate variability at rest without any particular stimulation.
- ECG electrocardiogram
- US 2004/0127804 A1 discloses a device which is to be implanted and measures both the pulse rate and the respiratory rate and sets them in relation to each other.
- the effort required for this purpose namely an implantation, however, can only be justified in certain cases, for example if an implant in the form of a cardiac pacemaker is necessary anyway.
- the device disclosed in this publication operates independently of a controlled breathing, that is independent of a corresponding stimulation, so that extremely complex evaluation steps are necessary, which can ultimately be performed only by trained personnel.
- the functional tests described above therefore involve targeted stimulation and correlate heart rate variability with the stimulation signal, for example, to determine the quality of heart rate variability.
- the latter can be done for example via a spectral analysis of the heart rate.
- At maximum quality of heart rate variability essentially only one frequency occurs in the spectral analysis of the heart rate, namely the respiratory rate. It is understood that to measure the correlation between heart rate variability and stimulation, it is not necessary to rely on spectral analysis. On the contrary, all analytical methods can be used with which the responses of the heartbeat to a stimulation can be measured, that is to say, measured.
- the corresponding measurement values may be made in any suitable manner, for example by outputting a value related to the correlation between heart rate variability and stimulation signal, for example as a graph, in number or in binary.
- a graphic order of the respective distance between two heart beats over the measurement time can be made, which represents an image of the heart rate variability and whose amplitude is a measure of the quality of the heart rate variability.
- a numerical value for the quality of the heart rate variability can be determined from the standard deviation or from other mathematical methods. The same is possible by a corresponding function analysis of the spectrum of the heart rate.
- such determined values can be converted into simple signals, for example, such as (good / bad), (red / green) or (+/-) for the simple statement to what extent the heart rate variability is good or bad, or correspondingly finer tuned by (red / yellow / green) or (+ / 0 / -) for a corresponding more detailed statement regarding high quality, average quality or low quality of heart rate variability. It is immediately understandable that all conceivable output formats can be used to advantage depending on the desired informative value.
- the invention proposes on the one hand a generic device, which is characterized by means for specifying a defined measuring time interval. Likewise, the invention proposes a generic method, which is characterized in that a defined measuring interval is given.
- the specification of a defined measurement time interval relieves the user of the responsibility to maintain the necessary measurement conditions for a sufficient measurement period, without first knowing exactly how long this measurement period will be. In particular, users may already be prepared for approximately how long the conditions necessary for a proper measurement, such as a breastfeeding, a steady breathing or the like, must be complied with.
- the specification of a defined measuring time interval also relieves the user of the responsibility of evaluating a measurement result in retrospect to determine whether the measuring time was sufficiently long or to what extent, for example, a shorter partial interval from the entire measuring period should or could be used for an evaluation in a longer measuring time. In particular, a user is then not enticed to include only positive appearing measurement data in the evaluation.
- the invention proposes a generic device, which is characterized by means for specifying a defined lead time.
- the invention proposes a generic method, which is characterized in that a defined lead time is specified.
- Cumulatively or alternatively to the specification of a defined measuring time interval allows the specification of a defined lead time an objective examination of the measurement environment, for example, whether a heart rate can be recorded sufficiently reliable.
- the physiology of the patient can be appropriately calmed in advance in advance, so that in particular the parasympathetic nervous system can take control of the body of the patient.
- the specification of a lead time enables the patient not to have to deal with the lead time as such, which in particular minimizes the risk of the sympathetic being over-engaging.
- a user is given the beginning of the measurement, which can be done by apparatus or in the measuring device by any suitable means, such as a corresponding display.
- the user can then internally adjust to the fact that the measurement is now running and, accordingly, the specifications for the measurement should be adhered to as far as possible.
- the end of the lead time and a plausibility check successfully completed during the lead time can be communicated to the user.
- the user is given the measuring time. Again, this can be done by the measuring device by any suitable means.
- a corresponding signal for example a changing tone
- a counter or clock can indicate how long the measurement is running or will be running.
- a clock running towards the end of the measurement for example a backwards counting clock, proves to be advantageous for ergonomic reasons, since the patient or the user can directly take a picture of the remaining measurement time, whereby Reuther P02602WO
- the method described here is particularly suitable for respiratory sinus arrhythmia, so that respiration should be stimulated accordingly with the stimulation signal.
- the measuring device comprises means for outputting a stimulation signal, wherein - optionally - also an external signal can be detected and processed accordingly.
- the overall arrangement is particularly simple if the measuring device has means for outputting a breathing signal, which can be done, for example, by a bar which rises and falls again in the desired respiratory rhythm.
- a plausibility check is carried out within a lead time. This can be ensured by particularly simple measures that necessary boundary conditions, such as a more reliable pulse measurement via an ear clip, a sufficient stability of the respiration and / or a reliable heart rate measurement, are met when the actual measurement starts.
- This plausibility check should be carried out at least during a subinterval within the lead time, preferably between 10 s and 30 s. It goes without saying that a plausibility check can preferably also be used advantageously during the measurement or for the quality check of the measurement. Accordingly, it is also advantageous if the measuring device has means for carrying out a plausibility check. These implementing means may in particular comprise statistical analysis methods, for example for checking whether each heartbeat is detected, whether artifacts are present or whether a user is not breathing in the right rhythm, which can lead to a falsification of the measurement result.
- Artifacts can be detected, for example, by a moving average of the deviations of some, for example five, pulse intervals. Is the deviation of a pulse Reuther P026 02 WO
- the width of a frequency peak can be determined by a spectral analysis of the pulse interval and used as a measure of whether ever breathed regularly.
- pulse interval the distance of a pulse wave from its predecessor wave
- pulse wave the distance of a pulse wave from its predecessor wave
- this term and the term “pulse wave” are to be understood in its most general form and include all correlated with the heartbeat body wave that can be used for pulse measurement
- R-waves it is also possible, for example, for R-waves to use an ECG and therefore for the RR distance in this regard if the measurements can be carried out with sufficient ease.
- a stimulation of the heart rate variability takes place already during a lead time, for example by prescribing a respiratory signal.
- the autonomic nervous system can be prepared for a corresponding measurement in a suitable manner, so that, for example, the parasympathetic nervous system can come to the fore.
- the plausibility check can also check whether the respiratory rhythm complies with the appropriate specification. This can be done, for example, by a spectral analysis in which it is subsequently checked whether the frequency peak is based on the specification of the respiratory rhythm, for example of 0.1 Hz.
- the corresponding measuring device preferably comprises means for quality testing the measurement and for outputting a quality-related value, wherein cumulatively or alternatively the means for quality testing are connected to a data memory in which data on the heart rate recorded by a transducer are stored are.
- the measuring device can perform an automated quality inspection, which ultimately allows objectively a quantitative or qualitative output of a quality-related value.
- an automated quality test the measurement of the stimulated heart rate variability from the field of metrology only feasible for trained personnel or physicians can be placed in the hands of a patient in a very reliable manner in the hands of an untrained user.
- the quality check can be carried out on the basis of the measured data by means of statistical methods.
- the standard deviation or in particular a maximum and minimum deviation of the heart rate can be checked.
- the methods already explained above for the plausibility check can be used for the quality check.
- Even more complex test methods, which can not be used for the plausibility check because of the shorter lead time, can be used. So it may be, for example, that although breathed at the right pace, but different depths. As a result, the stimulation would be uneven, corresponding to the amplitudes of the oscillations of the heart rate would be different for each respiratory cycle. This can be determined, for example, by a statistical evaluation of the dispersion of the amplitudes, e.g. by calculating the coefficient of variation.
- the plausibility check and / or the quality inspection can be an objective evaluation of existing data in the data storage, which can dispense with the trained eye of a physician or specially trained staff, without thereby the validity of the measurement results , in particular, the ultimately interesting for the patient statement - is the heart rate variability in order or not - diminished.
- the transducer comprises a heart rate monitor with an ear clip connected to the rest of the measuring device via a cable
- a cable reel or cable reel to which the cable is connected can be used to ensure that the cable between the measuring device and The ear is not tangled or jammed to negatively affect the measurement.
- the cable drum is effective on both sides, as expressed in this way is small and lightweight. This is in particular also because the necessary for a rolling up of the cable routes can be halved in this way, since compared to unilaterally effective cable drums only half of the distance needs to be rolled up. This is because at the same number of revolutions the cable is doubled up. In addition, this increases the cable diameter faster, so that for this reason an effective rolling can be guaranteed with minimal effort.
- FIG. 1 shows an overall view of a measuring device according to the invention
- FIG. 2 shows a schematic front view of the measuring device according to FIG. 1,
- Figure 3 is a schematic perspective of the measuring device of Figures 1 and 2;
- FIG. 4 shows the measuring arrangement according to FIG. 1 in a rear view with the ear clip inserted; Reuther P ⁇ 2602WO
- FIG. 5 shows the measuring arrangement according to FIGS. 1 and 4 with the ear clip removed
- Figure 6 shows the main strands of a measuring device according to the invention
- FIG. 7 shows a method sequence for carrying out the measurement in the method sequence according to FIG. 6
- Figure 8 shows the structure of the display of the measuring device according to Figures 1, 4 and 5;
- FIGS. 9 to 19 various displays in process states of the method sequence according to FIG. 7.
- the measuring device 1 shown in FIGS. 1 to 5 has a display 2, an on-off button 3, a memory button 4, a setting button 5 (SET button), a USB plug 6 and a heart rate monitor whose ear clip 7 is connected via a cable 8 with the rest of the measuring device. With these interfaces, this measuring device 1 succeeds in implementing the functionalities according to the invention.
- the measuring device also comprises a double-acting cable drum 9, which ensures that the cable between the remaining measuring device 1 and the ear clip 7 is constantly under a slight voltage, so that the risk of a negative influence on the measurement result by a hooking cable 8 or by other influences on the cable 8 can be minimized. Due to the cable drum 9, the ear clip 7 can be stored quickly and reliably in a recess 10 on the rear side of the measuring device 1. In this way, the device is extremely compact and can be taken anywhere without significant risk that the cable tangled somewhere during transport.
- a unidirectional programming with only 2 buttons is realized in this embodiment.
- another programming method such as a bi-directional programming method with two or 3 keys or a slightly more complex input option can be created, which according to the Appendix of the present embodiment as simple as possible programming or input should be provided, which is already known to an average user if possible is what is known to the average citizen especially with unidirectional key inputs or bidirectional key entries with only a few keys of watches or alarm systems.
- the functionality "data + measured values to the PC" 12 is started in the measuring device 1.
- This data includes both personal parameters and measurement data as well as measurement results. If the connection to the PC is disconnected, then the data determined from a data memory, which is not shown in more detail, are exported to the PC the measuring device 1 again, as shown by numeral 11. It is understood that in other embodiments, the interface can be made more complex, so that, for example, inputs via the PC can take place To use measuring device 1 only as a measuring device and the entire evaluation un d to be controlled by the PC. In this regard, the most diverse concrete embodiments are readily conceivable.
- bi-directional programming situations can also be realized by pressing the key 3 to increase the memory by the number 1, while pressing the key 4 decreases the memory by the number 1.
- pressing both buttons 3, 4 at the same time then a storage process as such or the opening of a specific memory can be implemented. It is also understood that in the functionality 13 further storage operations can be made readily complementary.
- the measuring device 1 switches to the functionality "Read out memory contents + display" 14.
- the user has the option of requesting measurements that have been taken, which makes sense, for example, on the occasion of a doctor's visit can.
- the display comprises three 3-digit displays 19 and a 4-digit display 20, which, depending on the functional state in connection with various units Displays in a unit column 21, by which respective meanings can be assigned to the respective digits, can provide the user with the information explained herein.
- Further detail displays 22 to 24 complete the display options of the display 2.
- the partial display 24 in the present exemplary embodiment serves to warn that the memory is overfilled and has to be emptied in one way or another by reading out or carrying over in a PC. In this case, the memory status can already be displayed in advance by the two outer partial ring rings when it reaches a critical level. In this context, it is understood that such partial displays can also be assigned with other meanings.
- pressing the key 3 starts the actual measurement 15 by first performing a system check, a battery check and a display check 25.
- a corresponding indication at B 1 is for example shown in FIG. 9 for a weak battery. If the system check 25 is unsuccessful, the device switches off with a corresponding display. Otherwise, the device checks in a next method step 26 whether a particular user is selected. The latter is, as already explained, performed via the functionality 13.
- a user (user 1 in this embodiment) is selected, as represented by the display B2 (see FIG. 10) by way of example, the age is determined from the stored user data in a method step 27. If no user is selected, alternatively, the age is entered directly in a method step 28, as indicated by way of example in the display B3 according to FIG. 11. As an alternative to user selection via the functionality 13 (see FIG. 6), this can also take place in the method step 26, where a "non-user" or the user with the number 0 corresponding to the display according to FIG. 10 as the non-defaulted user directly via the key 3 is selectable.
- the user has the option of choosing between two measuring programs, which is shown as an example in FIG. 12 as display B4. In the present embodiment, therefore, only the numbers 1 and 2 are available to the user for program selection. It is understood that in this regard, other programs can be offered alternatively.
- the program "2" is used for heart rate variability monitoring, in which the heart rate variability is continuously calculated and displayed in a method step 30. The corresponding values are stored in the data memory of the measuring device or, alternatively, routed via the USB interface to a PC Heart rate variability monitoring can be stopped by pressing button 3, this button switches off the measuring device.
- FIGURE 12 the possibility shown in FIGURE 12 is to activate program "1", which ultimately determines the respiratory sinus arrhythmia, thereby starting a lead 32, which in the present embodiment runs over a defined lead time of 20 seconds This is done first via the breath bar Reuther P02 ⁇ 02WO
- a pulse indicator 22 is activated and the heartbeat heartbeat heart rate is calculated and displayed.
- the user has the opportunity to adapt his breathing to the respiratory signal.
- the ear clip signal is checked by determining the moving average value of the deviation of the last five pulse intervals from the determined heart rate and setting it against a threshold value. If this threshold is exceeded, it is assumed that there is either an artifact, that is, a non-existent heartbeat, or a missing heartbeat. In particular, this preliminary test can ensure that all pulses are measured correctly, which would otherwise lead to a considerable deterioration of the measurement result.
- a spectral analysis is performed and checks to what extent a frequency peak is at the specified respiratory rate. If this plausibility check 33 fails, an error message B6 (see FIG. 14) is displayed and the device subsequently switches off 34.
- the measurement is started over a defined measuring time interval of 35, in the present embodiment over 70 s, during which the user is shown the display B7.
- the evaluation is calculated age-corrected and displayed, which is done in a final process step 38, which has a constantly changing display B 10 / Bl 1, which provides the user with a variety of information, such as time and date in the sub-display 20 and respiratory rate (rsa l / min), accuracy of respiration with respect to the score (score%) and the quality (quality%), see Figure 18, as well as the pulse rate (l / min pulse) and the Heart rate variability (% cv; ms rmssd), see Figure 19.
- this display form also corresponds to the display form when using the functionality 14 "read out memory contents + display" according to FIG. 6.
- this measuring device ensures, in particular, that even laypersons can measure stimulated heart rate variability.
- the data can also be measured at almost any location, so that continuous measurement series can be recorded for the first time without excessive stress on a patient, which are also available for further evaluations due to the possibility of data transfer or subsequent read-out.
- details of this measuring device 1 can be modified without departing from the subject matter of the present invention.
- the measuring device 1 can be provided with further functionalities or have additional interfaces to other transducers in order to enable more complex evaluations or to record further patient data.
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- Life Sciences & Earth Sciences (AREA)
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- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Biophysics (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Animal Behavior & Ethology (AREA)
- Surgery (AREA)
- Molecular Biology (AREA)
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- Developmental Disabilities (AREA)
- Hospice & Palliative Care (AREA)
- Psychiatry (AREA)
- Psychology (AREA)
- Social Psychology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Child & Adolescent Psychology (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE112008000863T DE112008000863A5 (de) | 2007-04-24 | 2008-04-23 | Verfahren und Vorrichtung zur Messung der stimulierten Herzratenvariabilität |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE200710019624 DE102007019624A1 (de) | 2007-04-24 | 2007-04-24 | Verfahren und Vorrichtung zur Messung der stimulierten Herzratenvariabilität |
DE102007019624.7 | 2007-04-24 |
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WO2008128531A1 true WO2008128531A1 (de) | 2008-10-30 |
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Family Applications (1)
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PCT/DE2008/000697 WO2008128531A1 (de) | 2007-04-24 | 2008-04-23 | Verfahren und vorrichtung zur messung der stimulierten herzratenvariabilität |
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DE (2) | DE102007019624A1 (de) |
WO (1) | WO2008128531A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11992336B2 (en) | 2016-12-29 | 2024-05-28 | Thomas Mengden | Device, system and method for generating biofeedback |
Citations (6)
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WO2003096893A1 (en) * | 2002-05-17 | 2003-11-27 | Iembio Co., Ltd. | Portable heart rate variability (hrv) based health monitoring system having electromagnetic field (emf) sensor built in |
DE10233149A1 (de) * | 2002-07-22 | 2004-02-12 | Ganimed Gmbh | Digitales, elektronisches Diagnose-Verfahren und Meßeinrichtung zu seiner Durchführung |
US20040127804A1 (en) * | 2002-12-27 | 2004-07-01 | Hatlesad John D. | Measurement of respiratory sinus arrhythmia using respiratory and electrogram sensors in an implantable device |
DE102006002045A1 (de) * | 2005-01-18 | 2006-08-03 | Dailycare Biomedical Inc., Chungli | Vorrichtung zum Analysieren der Herzfrequenzvariabilität |
DE102005003678A1 (de) * | 2005-01-26 | 2006-08-03 | Biosign Gmbh | Vorrichtung und Verfahren zur Messung und Beeinflussung des Blutdrucks und der Herzratenvariabilität |
WO2007136850A2 (en) * | 2006-05-19 | 2007-11-29 | Cvrx, Inc. | Characterization and modulation of physiologic response using baroreflex activation in conjunction with drug therapy |
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2007
- 2007-04-24 DE DE200710019624 patent/DE102007019624A1/de not_active Withdrawn
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2008
- 2008-04-23 DE DE112008000863T patent/DE112008000863A5/de not_active Withdrawn
- 2008-04-23 WO PCT/DE2008/000697 patent/WO2008128531A1/de active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2003096893A1 (en) * | 2002-05-17 | 2003-11-27 | Iembio Co., Ltd. | Portable heart rate variability (hrv) based health monitoring system having electromagnetic field (emf) sensor built in |
DE10233149A1 (de) * | 2002-07-22 | 2004-02-12 | Ganimed Gmbh | Digitales, elektronisches Diagnose-Verfahren und Meßeinrichtung zu seiner Durchführung |
US20040127804A1 (en) * | 2002-12-27 | 2004-07-01 | Hatlesad John D. | Measurement of respiratory sinus arrhythmia using respiratory and electrogram sensors in an implantable device |
DE102006002045A1 (de) * | 2005-01-18 | 2006-08-03 | Dailycare Biomedical Inc., Chungli | Vorrichtung zum Analysieren der Herzfrequenzvariabilität |
DE102005003678A1 (de) * | 2005-01-26 | 2006-08-03 | Biosign Gmbh | Vorrichtung und Verfahren zur Messung und Beeinflussung des Blutdrucks und der Herzratenvariabilität |
WO2007136850A2 (en) * | 2006-05-19 | 2007-11-29 | Cvrx, Inc. | Characterization and modulation of physiologic response using baroreflex activation in conjunction with drug therapy |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11992336B2 (en) | 2016-12-29 | 2024-05-28 | Thomas Mengden | Device, system and method for generating biofeedback |
Also Published As
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DE112008000863A5 (de) | 2010-01-07 |
DE102007019624A1 (de) | 2008-10-30 |
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