EP1948006A2 - Capteur de pouls, pulsometre, oxymetre, levier de commande et casque - Google Patents

Capteur de pouls, pulsometre, oxymetre, levier de commande et casque

Info

Publication number
EP1948006A2
EP1948006A2 EP06805517A EP06805517A EP1948006A2 EP 1948006 A2 EP1948006 A2 EP 1948006A2 EP 06805517 A EP06805517 A EP 06805517A EP 06805517 A EP06805517 A EP 06805517A EP 1948006 A2 EP1948006 A2 EP 1948006A2
Authority
EP
European Patent Office
Prior art keywords
pulse
person
photodetector
stimulus generator
radiation source
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06805517A
Other languages
German (de)
English (en)
Inventor
Eckard Glaser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Glaser Eckard
Original Assignee
Viasys Healthcare GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Viasys Healthcare GmbH filed Critical Viasys Healthcare GmbH
Publication of EP1948006A2 publication Critical patent/EP1948006A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/0406—Accessories for helmets
    • A42B3/0433—Detecting, signalling or lighting devices
    • 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 for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
    • A61B5/024—Measuring pulse rate or heart rate
    • A61B5/02416—Measuring pulse rate or heart rate using photoplethysmograph signals, e.g. generated by infrared radiation
    • A61B5/02427—Details of sensor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue
    • A61B5/1455—Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue using optical sensors, e.g. spectral photometrical oximeters
    • A61B5/14551—Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue using optical sensors, e.g. spectral photometrical oximeters for measuring blood gases
    • A61B5/14552—Details of sensors specially adapted therefor
    • 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
    • A61B5/6802—Sensor mounted on worn items
    • A61B5/681—Wristwatch-type devices
    • 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
    • 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
    • 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
    • A61B5/6825—Hand
    • 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
    • A61B5/6825—Hand
    • A61B5/6826—Finger
    • 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
    • A61B5/683—Means for maintaining contact with the body
    • A61B5/6838—Clamps or clips
    • 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
    • A61B5/6887—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient mounted on external non-worn devices, e.g. non-medical devices
    • 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 for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
    • A61B5/024—Measuring pulse rate or heart rate
    • A61B5/02438—Measuring 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
    • A61B5/02—Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
    • A61B5/024—Measuring pulse rate or heart rate
    • A61B5/0245—Measuring pulse rate or heart rate by using sensing means generating electric signals, i.e. ECG signals
    • A61B5/02455—Measuring pulse rate or heart rate by using sensing means generating electric signals, i.e. ECG signals provided with high/low alarm devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/16—Devices for psychotechnics; Testing reaction times ; Devices for evaluating the psychological state
    • A61B5/18—Devices for psychotechnics; Testing reaction times ; Devices for evaluating the psychological state for vehicle drivers or machine operators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7271—Specific aspects of physiological measurement analysis
    • A61B5/7275—Determining trends in physiological measurement data; Predicting development of a medical condition based on physiological measurements, e.g. determining a risk factor

Definitions

  • Pulse sensor Pulse sensor, pulse meter, oximeter, joystick and helmet
  • the invention relates to the technical field of pulse sensors, pulse meters and oximeters and applications of pulse sensors in joysticks and helmets.
  • the invention relates to pulse and / or oximeter with a small design and sensors for such devices that are equipped with an audible and / or visual alarm.
  • Oxihaemoglobin which is in oxygenated blood cells
  • deoxyhemoglobin which is in low-oxygen corpuscles
  • Deoxyhemoglobin absorbs more in the red
  • oxyhemoglobin absorbs more in the infrared.
  • Absorption curves can be found for example in US Pat. No. 5,152,296. To capture these differences, mostly red light emitting diodes, which mainly emit light between 610 nm and 650 nm, and infrared light emitting diodes with a main emission between 810 and 850 nm are used.
  • a photosensor detects transmitted or backscattered light, depending on the design of the oximeter sensor. Depending on which LED is currently lit, the absorption or backscatter in red or infrared is measured.
  • the absorption of light in the tissue also depends on the phase of the heartbeat. During systole, the amount of blood in arteries increases, resulting in detectable increased light absorption. Therefore, the pulse of a subject can be determined from the time interval between light absorption peaks. Although only one wavelength is required for this type of pulse measurement, the pulse can also be determined from the signal of an oximeter sensor. Therefore, the extra effort for a pulse measurement in an oximeter is low. Consequently, at the moment, almost exclusively pulse oximeters are sold.
  • US 6,736,759 B1 describes several embodiments of a training monitoring system.
  • This system includes an electronic positioning device that operates on a GPS (Global Positioning System) basis, a physiological monitor that may include an oximeter, and a display device.
  • a GPS module, an oximeter, batteries, a processor transmit module, and other modules may be mounted on a belt worn around the abdomen by an athlete. On one wrist, the athlete wears the display, which is housed in a watch-like case.
  • the display device includes a (radio) receiver for receiving data from the processor sending module, a processor, a display screen, input switches, and one or more alarms giving an audible and / or visual indication, such as blinking.
  • an alarm may be activated when the blood oxygen level or pulse is outside a predetermined range.
  • the specified range can be set.
  • the display device may be housed in a tacho-like housing, which in turn is attached to a handlebar of a bicycle.
  • the data to be displayed are recorded via spectacle lenses in the eyes of a user.
  • US 5,490,523 describes a finger-clip pulse oximeter which is apparently marketed by Nonin Medical Inc. under the product name 9500 Onyx.
  • the index finger is clamped between a lower housing and an upper housing.
  • a spring pressed both housings on the finger.
  • the lower housing In the lower housing there is a battery compartment and an opening, through which two light emitting diodes (LEDs) can emit light.
  • the upper housing essentially accommodates a board with the electronics and six 7-segment LEDs for displaying the measured values.
  • the upper half of the upper case is transparent.
  • a photodetector is mounted, which captures the light transmitted through the finger through an opening in the lower half of the upper housing.
  • a flat cable connects the battery compartment, the two LEDs mounted on the ribbon cable, the upper half of the lower housing, the lower half of the upper housing, and the circuit board.
  • a reflection pulse oximeter described for example in US 5,224,478 may be used.
  • all assemblies can be housed in a housing.
  • the housing shape of a reflection pulse oximeter may be adapted to the shape of a user's forehead, and may be secured to the forehead by means of a band.
  • Nonin Medical Inc. offers a wristwatch pulse oximeter called the 3100 WristOx, which can be worn on a wrist.
  • the 3100 WristOx can be connected to a finger clip sensor.
  • a finger oximeter A similar device is described in US 6,731, 962 B1 and is referred to there as a finger oximeter. It is sold, for example, by Miami Medical under the DIGIT brand and apparently manufactured by BCI.
  • the finger oximeter has a bidirectional radio interface, so that the finger oximeter can be wirelessly connected to a remote monitoring device, e.g. A Vital Signs from Smith Medical PM, Inc., Waukesha, WI, USA.
  • the received signal can be displayed graphically or alphanumerically in the monitoring device.
  • the signal may also be output as an audio alarm or visual alarm from the monitor if an undesirable threshold is reached or exceeded.
  • the radio interface can use the Bluetooth protocol.
  • the finger oximeter can be activated or deactivated via a switch in the finger oximeter housing or from the monitor.
  • a switch in the finger oximeter housing or from the monitor In US 5,800,349 various transmission pulse oximeter sensors are described in which the light sources and the photodetectors are not offset on an axis, but offset from each other.
  • US Pat. No. 6,771,172 B1 describes a portable patient monitor in the grip of which red and yellow light-emitting diodes are installed in order to output visual alarms. A loudspeaker can also be alerted. Alarm thresholds can be set via a keyboard.
  • the patient monitor can be a portable oximeter.
  • An advantage of the invention is that athletes, pilots or persons with lung diseases are actively pointed to an overload or oxygen deficiency of their body.
  • An advantage of a buzzer, a loudspeaker, a bright light source, a vibrator or electrodes is that all these devices can actively attract a person's attention. So the person is not forced to check one or two three-digit 7-segment displays from time to time.
  • the invention solves, so to speak incidentally also the problem that the time interval between two tests must be shorter than the usable conciousness. In devices according to the prior art, the person would somehow have to be reminded of the next reading of the display.
  • a battery powered pulse meter can then be particularly compactly equipped with a vibrating alarm when one or more batteries are moved relative to the housing.
  • the advantage of using a warning and alarm mode is that the urgency of a hazard is recognizable.
  • a pulse sensor or an oximeter sensor can be advantageously integrated into a joystick or a helmet.
  • stimulus generators such as LEDs or electrodes can be advantageously integrated into control sticks or helmets.
  • Fig. 1 shows a finger clip pulse oximeter according to this invention
  • FIG. 2 shows a lower half of the housing of the finger-clip pulse oximeter shown in FIG. 1;
  • FIG. 3 shows an upper half of the housing of the finger-clip pulse oximeter shown in FIG. 1;
  • FIG. 4 shows a section through a first embodiment of the lower housing half illustrated in FIG. 2;
  • FIG. 5 shows a section through a second embodiment of the lower housing half illustrated in FIG. 2;
  • FIG. 6 is a side view of an ear clip sensor according to the invention.
  • FIG. 7 shows a rear view of the ear clip sensor according to the invention.
  • Fig. 8 is a plan view of a wrist pulse oximeter according to the invention.
  • FIG. 9 shows a section through the wrist pulse oximeter shown in FIG. 8;
  • Fig. 10 warning and alarm characteristics of an oximeter according to the invention.
  • FIG. 12 shows a display according to the invention
  • FIG. 13 shows a joystick according to the invention
  • FIG. 14 shows a helmet according to the invention.
  • An essential aspect of this invention is to measure the oxyhemoglobin content in a subject's blood and / or the person's pulse and to alert the subject by appropriate stimuli when the oxyhemoglobin level or pulse assumes undesirable or even dangerous levels.
  • the finger-clip pulse oximeter 1 illustrated in FIG. 1 comprises an upper housing half 3, a lower housing half 2 and a spring 4 which compresses the upper housing half 3 and the lower housing half 2.
  • the spring 4 engages in the grooves 13 and 14 in the upper housing half 3 and in the lower housing half 2 a.
  • Both the upper housing half 3 and the lower housing half 2 have a recess 5 for receiving a finger, in particular an index finger on. The depth of the recess 5 is so tight that the upper and lower half of the housing 3 and 2 do not press against each other but against the finger.
  • the upper housing half 3 comprises a first key 11 and a second key 12 for controlling the pulse oximeter 1 as well as a groove 13 in which the spring 4 engages. The operation by means of the two keys 11 and 12 will be discussed in more detail in connection with the figures 10 to 12.
  • the upper housing half 3 further comprises a display 17 and a plurality of stimulus generating means.
  • the stimulus generating means include a bright LED 15, a buzzer 16 behind buzzer openings, electrodes 24 and vibrators, the latter being explained in more detail in connection with FIGS. 4 and 5.
  • These stimulus generating devices have the characteristic that they can actively attract the attention of a user.
  • 7-segment displays as used for example in the 9500 Onyx as well as in the DIGIT, are not stimulus generating devices in the sense of this application.
  • One could also say that stimulus generating devices in the context of this application are non-alphanumeric displays. However, this does not so clearly express the purpose of actively attracting the attention of a user, nor does it encompass all embodiments of the invention, as set out in three paragraphs below.
  • Such 7-segment displays are multiplexed at such a high frequency that the human eye perceives a uniform glow.
  • the brightness varies between 2/7 for a "1" and 7/7 for an "8".
  • the brightness fluctuations in the representation of the numbers between 70 and 99 are much lower.
  • the numbers of the one-digit are iterated three times periodically, which is not good for indicating that the threshold has been undershot.
  • the 7-segment displays in the 9500 Onyx and DIGiT are oriented so that the displays are not visible in relaxed hand position or in a range of activities such as driving, flying or hiking.
  • the 7-segment display would be visible to the human eye, ie with a frequency between about 0.5 and 20 Hz, in an alarm or warning area be switched on and off (see Fig. 9 and 10).
  • the 7-segment display in the green area 107 could be completely switched off.
  • the 7-segment display should be placed on the side of the finger-chip pulse oximeter 1 adjacent to the buzzer 16.
  • FIG. 2 shows the lower half of the housing 2 and in particular its upper side with the recess 5.
  • LED light emitting diode
  • IRED infrared light emitting diode
  • the lower housing half 2 contains batteries or rechargeable batteries serving as energy sources.
  • the electrodes 24 serve to generate a further type of stimulus by means of surges, alternatively or in addition to light and sound, in order to actively engage the user
  • FIG. 3 shows the upper housing half 3 and in particular its lower side with the recess 5. On the underside one can see a photodetector 23. The photodetector 23 together with LED 21 and IRED 22 form an oximeter sensor in the narrower sense.
  • the upper housing half 3 contains in particular a circuit board 26 with the transmitter 25.
  • the lower and upper 5 housing half 2 and 3 are connected, for example via a (not shown) flat cable to supply the transmitter 25 with energy and the LED 21, the IRED 22 and the electrodes 24 to control.
  • the photodetector converts the transmitted through the finger red and infrared photons into electrical signals to determine in a known manner the oxyhemoglobin content to zero.
  • the photodetector may opposite the LED 21 and the IRED 22 (see FIG. US 5,490,523 and US 6,731, 962) or offset 'with respect to LED 21, and the IRED 22 (see FIG. 5,800,349) may be provided.
  • LED 21 and IRED 22 can be switched out of phase.
  • the LED 21, the IRED 22 and the photodetector 23 can be accommodated in the same housing half, so that the oxyhemoglobin fraction is determined by means of backscattered photons (US Pat. No. 5,490,523, US Pat. "reflective type pulse oximeter"). In this context, one speaks of a reflection pulse oximeter or a reflection sensor.
  • FIG. 4 shows a section through an embodiment of the lower housing half 2.
  • the lower housing half 2 mainly contains the batteries serving as energy sources
  • a spring 42 pushes the battery 40 against contact on the opposite side.
  • the battery 41 also serves as an inertial mass to the lower
  • a motor 44 drives an eccentric 45 to which a contact 46 is rotatably mounted.
  • Figure 5 shows a section through a further embodiment of the lower half of the housing 2.
  • the lower half of the housing in turn contains two batteries 47 and 48, which are held on both end faces with springs in the lower half of the housing. Between both batteries, a coil 15 49 is housed. Within the coil is a movable magnet 50, which may be attached to a bendable tongue on the housing. It is irrelevant whether the magnet 50 is clamped clearance between the two batteries 47 and 48 or whether - as shown in Figure 5 - between the batteries 47 and 48 and the magnet 50 is a small gap.
  • the magnet 50 is pressed against the right battery 20 47 or the left battery 48 and moves them.
  • the batteries 47 and 48 then experience a particularly large mechanical deflection when the coil 49 is operated with alternating current whose frequency corresponds to the mechanical resonance frequency of the batteries 47 and 48.
  • the mechanical resonance frequency of the batteries should again correspond to the desired vibration frequency.
  • the batteries can be fixed only on one side movable with a spring or in a conventional manner and thus immovably relative to the lower housing half 2. In the latter case, then only the magnet 50 serves as an inertial mass.
  • the magnet 50 may be both a permanent magnet and an electron magnet 30, for example, with a soft iron core.
  • Figure 6 shows a side view of an ear clip sensor 51 according to the invention.
  • Figure 6 shows a rear view of the ear clip sensor 51.
  • the ear clip sensor 51 has a clip 54 for pinching a user's earlobe.
  • the ear clip sensor has a 5 ear bow 53, which is similar to a hearing aid between the auricle and head up and finally leads forward to transmit power to the auricle.
  • the ear bow 53 may be made of a thermoplastic material to match the shape of the ear bow to the anatomy of the user.
  • the ear bow 53 may be hollow and have a sound aperture 52 at its end to warn or alert a user.
  • the buzzer or loudspeaker for generating the sound may, for example, be accommodated in the inner half-bracket 57 or in a thickening of the ear-bow 53.
  • the outer bracket half 58 houses an LED 61 and an IRED 62.
  • a photodetector 63 is housed in the inner half clip 57.
  • the photodetector 63 may be located either opposite the LED 61 and IRED 62 or may be offset from the LED 61 and the IRED 62.
  • the LED 61, the IRED 62, and the photodetector 63 may be housed together in either the inner bracket 57 or the outer bracket 58 to determine the oxyhemoglobin content by the reflection type.
  • Electrodes 64 which are mounted in the inner half clip 57 and / or the outer half 58 of the clip so as to contact a user's skin, in particular his earlobe, in use, serve to warn or alert the user by power surges.
  • An electrical lead 55 serves to connect the ear clip sensor 51 to a pulse oximeter. Because of the better stability and the higher wearing comfort, the line 55 is fastened to the inner clip half 57. Via the line 55, the LED 61, the IRED 62 and the electrodes 64 are driven and the photodetector 63 is read out.
  • the clamp halves 57 and 58 batteries, the transmitter, possibly even buttons and a display for setting warning and alarm thresholds are accommodated, so that a Ohrclippulsoximeter arises.
  • the line 55 is dispensable in this case.
  • Fig. 8 shows a plan view of a wrist pulse oximeter 71 according to the invention.
  • Fig. 9 shows a section through the wrist pulse oximeter 71.
  • the wrist pulse oximeter 71 has the shape of a watch and is accordingly worn on the wrist. It has the same stimulus generating means as the finger-chip pulse oximeter 1: a bright LED 75, a buzzer 76, an eccentric 85 which simultaneously serves as a sluggish mass to vibrate the wrist pulse oximeter 71, and electrodes 84 for power surges produce.
  • the reflection oximeter sensor with LED 81, IRED 82 and photosensor 83.
  • a display 77 On the upper side of the wrist pulse oximeter 71 is also a display 77, which may for example be designed as the display 111 shown in Figure 11.
  • a first button 72 and a second button 73 are attached For example, warning and alarm limits can be entered.
  • the wrist pulse oximeter 71 may also be equipped with a finger-chip sensor similar to the 3100 WristOx, which is connected to the wrist pulse oximeter via an electrical cable.
  • the wrist pulse oximeter can be used primarily as a mechanical safeguard for the finger clip sensor, so that it is not lost when working or exercising.
  • the finger clip sensor can be smaller and lighter than a finger clip pulse oximeter because the batteries and transmitter can be housed in a different housing. This increases the wearing comfort and reduces the risk of loss of the finger clip sensor.
  • the stimulus generating means or devices may be in the wrist pulse oximeter and / or finger-chip sensor in this embodiment.
  • FIG. 10 shows the warning and alarm system for an oximeter according to the invention.
  • the oxyhemoglobin content is plotted on the SpO axis 91, the time (t) on the time axis 92, and the stimulus intensity generated by a stimulus generator on the stimulus axis 93.
  • a warning threshold 94 at 93% oxyhemoglobin content and an alarm threshold 95 at 89% oxyhemoglobin content are entered in the diagram shown in FIG.
  • a warning stimulus 97 is output. This can be that a stimulus is periodically switched on and off.
  • the frequency or duty cycle of switching on and off, the frequency of a buzzer sound or a vibrator, the volume of the buzzer sound or the strength of the vibrations can be selected as a function of the oxyhemoglobin content, so that the intensity of a warning can be varied.
  • an alarm is issued by the stimulus generator or devices. The alarm may persist in a continuous manner, as indicated by line 98.
  • FIG. 11 shows the warning and alarm system for a pulse meter.
  • the pulse axis 101 shows the pulse in beats per minute (bpm, beats per minute).
  • the stimulus axis 102 shows the stimulus intensity.
  • a lower alarm threshold 106 is entered at 60 bpm, a lower sill threshold 105 at 70 bpm, an upper warning threshold 103 at 150 bpm and an upper alarm threshold 104 at 160 bpm. Between the lower warning threshold 105 and the upper warning threshold 103 lies the green area 107, in which no stimulus is generated. If the pulse is between the lower alarm threshold 106 and the lower warning threshold 105 or between the upper warning threshold 103 and the upper alarm threshold 104, a warning 108 is output. If the pulse falls below the lower alarm threshold 106 or exceeds the upper alarm threshold 104, then an alarm 109 is output, which has approximately twice the stimulus intensity of a warning 108.
  • the frequency or duty cycle of turning a stimulus on and off the frequency of a buzzer sound or a vibrator, the volume of the buzzer sound, or the magnitude of the vibrations depending on the distance of the measured pulse from the green area 107 can be selected.
  • pulse meters, oximeters or pulse oximeters can be manufactured with fixed warning and alarm thresholds. If the warning and alarm thresholds are to be adjustable, a display of the set warning and alarm thresholds is helpful. This can be achieved in a simple manner by a potentiometer with a scale, so that the Potentiometer ein is readable. The scale expediently shows the set warning and / or alarm thresholds.
  • FIGS. 1 to 9 use two buttons for setting the warning and alarm thresholds as well as a display for checking the warning and alarm thresholds.
  • the pulse oximeters may have multiple modes of operation. In one mode, parameters such as the warning and alarm thresholds can be set, in the other, readings are displayed.
  • the displays 17 and 77 shown in FIGS. 1 and 8 may be constructed like the display 111 shown in FIG.
  • the display 111 includes an oxyhemoglobin region 112, a pulse region 113, various indicators 114 through 120, and a volume bar 121.
  • the oxyhemoglobin region 112 either the oxyhemoglobin concentration or the warning or alarm thresholds 94, 95 are displayed.
  • the pulse area 113 is either the pulse or the lower or upper warning and
  • the volume bar 121 generally indicates the intensity of a stimulus upon alarm or warning. Specifically, here is the volume of a buzzer 16 or 76 thought. It is important that the stimulus intensity, ie the volume can not be set to zero, because this is equivalent to switching off the warning. What is indicated where and what meaning the two keys currently have, results from the indicators 114 to 120. If none of the indicators is dark as the indicator 118 in Figure 12, the device is in measurement mode and it is the oxyhemoglobin concentration in the oxyhemoglobin 112 , the pulse in the pulse area 113 and the volume in the volume bar 5 121 displayed. Briefly pressing the first button 11 or 72 places the device in the setting mode.
  • the currently selected parameter which is indicated by the corresponding indicator, is cyclically advanced by one step. If the second button is pressed, the selected parameter can be switched on by one step per 5 seconds after 3 seconds. The frequency of the indexing can be increased with the duration of holding down the second key.
  • the warning or alarm value corresponding to the dark indicator is displayed in the corresponding area and can be changed by pressing the second button.
  • "A” to the right of an indicator stands for alarm threshold.
  • "W” to the right of an indicator stands for 0 warning threshold.
  • the arrangement of the indicators in the display 111 corresponds to the arrangement of the warning and alarm thresholds in Figures 10 and 11th
  • the level of the warning threshold 94 or the level of the alarm threshold 95 is displayed in the oxyhemoglobin area 112 and can be changed by pressing the second key.
  • the warning threshold between 100% 5 Oxinosiphomoglobinanteil and the alarm threshold can be set in 1% increments.
  • the alarm threshold can be set between 100% and 70% oxyhemoglobin content in 1% increments.
  • the altitude of the upper alarm threshold 104, the upper warning threshold 103, the lower warning threshold 105, and the lower 0 alarm threshold 106, respectively, may be adjusted.
  • the lower alarm threshold can be set within a range of 40 bpm to 230 bpm.
  • the upper alarm threshold can be set in a range from the lower alarm threshold to 230 bpm.
  • the lower warning threshold can be set in a range from the lower alarm threshold to the upper alarm threshold.
  • the upper warning threshold can be set in a range from the lower warning threshold to the upper alarm threshold.
  • the volume can be adjusted by pressing the second button.
  • the control range can range from 10% to 100% of the maximum achievable volume bars.
  • further bars and corresponding indicators can be provided to adjust the other stimuli, ie the brightness of the LED, the intensity of the electric shocks and the intensity or frequency of the vibrations with the aid of the second button.
  • the stimuli in particular the volume, a logarithmic choice of the step sizes is recommended.
  • FIG. 13 shows a joystick 130 according to the invention for aircraft and helicopters.
  • a reflection pulse oximeter sensor is housed with the LEDs 131 and 141, the IREDs 132 and 142 and the photodetectors 133 and 143, respectively.
  • electrodes 134 and 144 in each horn for generating electrical stimuli.
  • a bright LED 135 or 145 for generating optical stimuli is mounted on each horn.
  • the actual pulse oximeter may be located outside of the joystick 130. Connecting cables may be routed through the joystick support 146.
  • the pulse oximeter may be connected to the sound system of the aircraft or helicopter, which consists essentially of a radio and perhaps an intercom. Thus, warnings or alarms can also be output via the headphones that the pilots wear.
  • pulse oximeters alone or together with stimulus generators can also be accommodated in other controls such as bicycle or motorcycle handlebars or steering wheels for cars or utility vehicles.
  • FIG. 14 shows a helmet 150 according to the invention.
  • the helmet serves as a holder for a reflection pulse oximeter sensor, which consists of the LED 151, the IRED 152 and the photodetector 153 and measures the oxyhemoglobin content in the pilot's forehead.
  • Electrodes 154 can generate electrical stimuli.
  • the LED 155 together with the visor 157 can produce optical stimuli.
  • Reflection pulse oximeter sensor, electrodes 154, and LED 155 are connected via an electrical line 165 to a suitable pulse oximeter which may be connected to the aircraft or helicopter sound system to output audible warnings or alarms via line 159 and headphone shell 156.
  • pulse oximeters may be housed alone or with stimulus generators in other garments such as gloves or boots.

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  • Health & Medical Sciences (AREA)
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Abstract

L'invention concerne un capteur de pouls pourvu d'une source de rayonnement (21, 22 ; 61, 62 ; 81, 82 ; 131, 132, 141, 142 ; 151, 152) destinée à émettre des photons et d'un photodétecteur (23 ; 63 ; 83 ; 133 ; 143 ; 153) destiné à détecter les photons. Ce capteur de pouls comporte également un système de fixation (2, 3, 4 ; 53, 54 ; 130 ; 150) servant à fixer la source de rayonnement et le photodétecteur sur une personne. Ledit capteur de pouls comporte en outre un raccordement (55 ; 165) à un pulsomètre qui commande la source de rayonnement (21, 22 ; 61, 62 ; 81, 82 ; 131, 132, 141, 142 ; 151, 152) par l'intermédiaire de ce raccordement (55 ; 165) et lit le photodétecteur (23 ; 63 ; 83 ; 133 ; 143 ; 153). Enfin, ledit capteur de pouls comporte un générateur de stimuli (15, 16, 24, 41, 43, 44, 45 ; 52, 64 ; 75, 76, 84, 85 ; 134, 135, 144, 145 ; 156) qui attire l'attention de la personne lorsque ce générateur de stimuli est activé par le pulsomètre du fait que le pouls de cette personne ne se trouve pas dans les limites autorisées (107). Cette invention concerne également des oxymètres, des leviers de commande et des casques.
EP06805517A 2005-11-14 2006-11-13 Capteur de pouls, pulsometre, oxymetre, levier de commande et casque Withdrawn EP1948006A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005054152A DE102005054152A1 (de) 2005-11-14 2005-11-14 Pulssensor, Pulsmeter, Oximeter, Steuerknüppel sowie Helm
PCT/DE2006/001987 WO2007056983A2 (fr) 2005-11-14 2006-11-13 Capteur de pouls, pulsometre, oxymetre, levier de commande et casque

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EP1948006A2 true EP1948006A2 (fr) 2008-07-30

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US (1) US20090227852A1 (fr)
EP (1) EP1948006A2 (fr)
DE (2) DE102005054152A1 (fr)
WO (1) WO2007056983A2 (fr)

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Also Published As

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DE112006003685A5 (de) 2008-10-23
WO2007056983A2 (fr) 2007-05-24
WO2007056983A3 (fr) 2007-11-22
DE102005054152A1 (de) 2007-05-16
US20090227852A1 (en) 2009-09-10

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