EP1979227B1 - Vorrichtung für selbstüberwachung und diagnose beim tauchen ohne tauchergerät - Google Patents

Vorrichtung für selbstüberwachung und diagnose beim tauchen ohne tauchergerät Download PDF

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Publication number
EP1979227B1
EP1979227B1 EP07717835A EP07717835A EP1979227B1 EP 1979227 B1 EP1979227 B1 EP 1979227B1 EP 07717835 A EP07717835 A EP 07717835A EP 07717835 A EP07717835 A EP 07717835A EP 1979227 B1 EP1979227 B1 EP 1979227B1
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EP
European Patent Office
Prior art keywords
diver
diving
rate
syncope
slope
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Not-in-force
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EP07717835A
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English (en)
French (fr)
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EP1979227A1 (de
Inventor
Yvan Milla
Michel Benisty
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
    • B63C11/02—Divers' equipment
    • B63C11/32—Decompression arrangements; Exercise equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
    • B63C11/02—Divers' equipment
    • B63C2011/021—Diving computers, i.e. portable computers specially adapted for divers, e.g. wrist worn, watertight electronic devices for detecting or calculating scuba diving parameters

Definitions

  • the present invention relates to a method and device, generally attached to the wrist, for freediving underwater diver for measuring and analyzing personal physical and environmental physiological data so as to inform him about the risks of syncope at a given moment and to bring it to the surface if necessary.
  • the diving device according to the invention applies to the apnea diver in static (single apnea) or dynamic (underwater hunting) situations.
  • He is new and original in that he is the first to detect syncope by taking into account a physiological parameter.
  • the device according to the invention is defined by claim 1.
  • the device for its implementation is generally attached to the wrist, and essentially comprises means for capturing and measuring ambient physical and physiological data of the plunger (such as depth, time, hemoglobin saturation rate sensors). oxygen (Sp02) and heart rate).
  • means for capturing and measuring ambient physical and physiological data of the plunger such as depth, time, hemoglobin saturation rate sensors). oxygen (Sp02) and heart rate).
  • This device is advantageously contained in an envelope which holds it against the part of the body concerned at a temperature sufficient to record a reliable pulsatility of the signal.
  • Said envelope is advantageously an improved diving glove which also incorporates the wire connection which connects the digital sensor to the dive device via a sealed interface.
  • Said device consists, for automatically detecting a risk of syncope during dive, to analyze the rate of saturation desaturation (Sp02) which is established according to the slope (P) of said variation in the vicinity of said rate at a given instant given.
  • the values of the saturation rate Sp02 and of the slope (P) of its variation, measured on an apnea diver, are compared, at each instant, with the model (M), prerecorded, which is represented by the curve "saturation rate according to the slope of its variation "which delimits the zones of non-syncopal (ZNS) and syncopal state (ZS) and which has been established experimentally from a well-defined number of subjects for which it has been measured for each of them, the Sp02 rate and the slope (P) of its syncopal state limit variation.
  • the diving depth can also be taken into account, to determine the risk of syncope.
  • the device also consists in displaying, in real time, on the diving device, the diving depth, the heart rate, the saturation rate, the apnea time and the recovery time.
  • the device which is generally attached to the wrist, essentially comprises means, of the sensor type, of capturing and measuring the physical and ambient physiological data of the plunger such as the diving depth, the apnea time and the recovery time, the saturation rate of oxygen hemoglobin (Sp02) and heart rate.
  • means, of the sensor type of capturing and measuring the physical and ambient physiological data of the plunger such as the diving depth, the apnea time and the recovery time, the saturation rate of oxygen hemoglobin (Sp02) and heart rate.
  • capture and measurement means are advantageously contained in an envelope which holds them against the part of the body concerned at a temperature sufficient to record a reliable pulsatility of the signal.
  • Said envelope is advantageously a suitable dive glove which also incorporates the wire connection which connects the digital sensor to the dive device via a sealed interface.
  • the rescue element is advantageously a vest provided with a CO2 capsule triggered by the clock when a syncope risk signal is issued and the diver has not invalidated said signal.
  • the Sp02 sensor is integrated into a neoprene glove connected to the watch via a cable that can be molded into the glove.
  • the glove is at the same time a little loose at the level of the fingers carrying one or two sensors to avoid any compression and insulating enough of the cold to mitigate a possible risk of peripheral vasoconstriction due to cold, compression and cold being all two of the factors altering the quality of the signal.
  • the device is supposed to give a value of Sp02 only if the pulsatility of the signal is reliable.
  • the glove also makes it possible to limit the artefacts of movements.
  • the lifejacket is designed to lift the diver to the surface and keep his head out of the water.
  • the diving device records, every second, raw data such as: the depth and total time of the apnea, the rate of Sp02 and the heart rate. It calculates from these data the desaturation slope which is defined as the rate of desaturation in percentage per second.
  • the computer calculates the desaturation slope, according to a mathematical model, according to the last Sp02 measurements.
  • the desaturation slope corresponds approximately to the rate of desaturation (slope of the tangent to the Sp02 curve at time t, expressed in% / second).
  • Each second it analyzes a rate of Sp02 associated with a slope.
  • the computer analyzes, at each second, the rate of Sp02 as a function of depth. It has also been predetermined, in the computer database, for each depth, a Sp02 threshold below which a syncopal accident is highly suspect.
  • the computer will detect a syncopal signal; otherwise he will not detect anything.
  • each diver will have to program his modifiable apnea limit time according to its shape and the depth at which it dives.
  • the computer detects the beginning of the apnea when the depth is greater than a determined value and the end of the apnea when it becomes lower than said value in order to operate the stopwatch within said limits and to return it to zero at the end of apnea.
  • the computer will detect a syncopal signal; otherwise he will not detect it.
  • an alarm threshold a posteriori to control the apnea to come can be established for example in case of desaturation below a predetermined threshold by the diver (for example 85): a non-audible alarm may signal to the diver that his apneas are a little too much pushed.
  • Movement artifacts are secondary to movement of the plunger and sensor relative to the plunger. Most new pulse oximeters help to eliminate the patient's movement artifacts. However during movement in the water the sensor will also move relative to the diver if it is not fixed correctly. This is the first role of the glove.
  • syncope and non-syncope curves showed that in all cases above a certain threshold of Sp02 (80 for example), syncope never occurred and that below a certain threshold (30) The subjects were almost always in syncope.
  • a version without the survival device ie a version comprising a dive computer provided with a pulse oximeter suitable for underwater use whose sensor is integrated in a glove.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Claims (9)

  1. Vorrichtung zur Selbstkontrolle und Diagnose für Sporttaucher, die im Wesentlichen folgendes umfasst:
    - Mittel zum Erfassen und Messen von physikalischen Umgebungsdaten und physiologischen Daten des Tauchers (wie Sensoren zum Messen der Tiefe, der Zeit, des Sauerstoffsättigungsgrades im Hämoglobin (Sp02) und der Herzfrequenz);
    - eine Uhr, die das Erfassen der besagten Daten in regelmäßigen Zeitabständen ermöglicht;
    - optische und/oder akustische Mittel zur Angabe der besagten Daten;
    - Mittel, in der Art von Mikroprozessoren, zur Analyse der erfassten Daten im Verhältnis zu einem vorab gespeicherten Modell zur Steuerung einer Vorrichtung, die dem Taucher eine Gefahr eines Tauchvorfalls anzeigt, und bei Bedarf ein Rettungselement (in der Art einer aufblasbaren Schwimmweste) auslöst;
    - Mittel, in der Art von Speichern, zum Abspeichern der erfassten Daten, der Analyseergebnisse und der Daten in Bezug auf das vorab gespeicherte Modell (M);
    dadurch gekennzeichnet, dass sie zur automatischen Erfassung der Gefahr einer Synkope während des Tauchgangs darin besteht, die Entsättigungsgeschwindigkeit des Sauerstoffsättigungsgrades im Hämoglobin (Sp02) zu analysieren, die je nach Variationsgefälle (G) des Sättigungsgrades (Sp02) zu einem gegebenen Zeitpunkt erstellt wird.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Werte des Sättigungsgrades (Sp02) und des Gefälles (G) seiner Variation, die an einem Taucher mit angehaltener Luft gemessen werden, zu jeder Zeit mit dem vorab gespeicherten Modell (M) verglichen werden, das durch die Kennlinie "Sättigungsgrad in Abhängigkeit vom Gefälle seiner Variation" dargestellt wird, die die Bereiche des nicht synkopischen Zustands (ZNS) und des synkopischen Zustands (ZS) eingrenzt, und die erfahrungsgemäß basierend auf einer bestimmten Anzahl an Menschen erstellt worden ist, an denen man den Sättigungsgrad (Sp02) und das Gefälle (G) seiner Variation an der Grenze zum synkopischen Zustand gemessen hat.
  3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass es im Falle der Erfassung der Gefahr einer Synkope darin besteht, ein Signal auszusenden, das vom Taucher vernehmbar ist, und das von letzterem innerhalb einer festgelegten Zeit unterbrochen werden muss, da ansonsten das Rettungselement durch die Steuerungsvorrichtung ausgelöst wird.
  4. Verfahren nach irgendeinem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass es zur Bestimmung der Gefahr einer Synkope darin besteht, auch die Tauchtiefe zu berücksichtigen.
  5. Verfahren nach irgendeinem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass es darin besteht, an der Tauchvorrichtung in Echtzeit die Tauchtiefe, die Herzfrequenz, den Sättigungsgrad (Sp02), die Dauer der Apnoe und die Erholungszeit anzuzeigen.
  6. Verfahren nach irgendeinem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass es am Handgelenk angebracht ist.
  7. Verfahren nach irgendeinem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass es in einem geeigneten Tauchhandschuh enthalten ist, der es bei einer Temperatur gegen den betroffenen Teil des Körpers hält, die die Aufzeichnung eines zuverlässigen Signals ermöglicht.
  8. Verfahren nach Anspruch 7, dadurch gekennzeichnet, dass der Tauchhandschuh auch eine Kabelverbindung umfasst, die den digitalen Sensor über eine dichte Schnittstelle mit der Tauchvorrichtung verbindet.
  9. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das Rettungselement in der Art einer Schwimmweste mit einer CO2-Kapsel ausgestattet ist, die von einer Uhr ausgelöst wird, wenn ein Signal für die Gefahr einer Synkope ausgegeben wird, und der Taucher das besagte Signal nicht unterbrochen hat.
EP07717835A 2006-01-10 2007-01-05 Vorrichtung für selbstüberwachung und diagnose beim tauchen ohne tauchergerät Not-in-force EP1979227B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0600209A FR2895970B1 (fr) 2006-01-10 2006-01-10 Procede et dispositif d'autocontrole et de diagnostic pour plongeur en apnee
PCT/FR2007/000022 WO2007080303A1 (fr) 2006-01-10 2007-01-05 Procede et dispositif d'autocontrole et de diagnostic pour plongeur en apnee

Publications (2)

Publication Number Publication Date
EP1979227A1 EP1979227A1 (de) 2008-10-15
EP1979227B1 true EP1979227B1 (de) 2013-03-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07717835A Not-in-force EP1979227B1 (de) 2006-01-10 2007-01-05 Vorrichtung für selbstüberwachung und diagnose beim tauchen ohne tauchergerät

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EP (1) EP1979227B1 (de)
FR (1) FR2895970B1 (de)
WO (1) WO2007080303A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG139584A1 (en) * 2006-07-26 2008-02-29 Singapore Polytechnic A device for the measurement of a physiological parameter of a diver
EP2075189A1 (de) * 2007-12-28 2009-07-01 Matteo Vianini Tauchcomputer mit Tauchprüfvorrichtung
AU2021366274A1 (en) 2020-10-24 2023-06-01 Spectronix Inc. Optical device, system and method for monitoring blood-borne chromophores

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1287783B1 (it) * 1996-05-03 1998-08-18 Htm Sport Spa Computer portatile per immersioni subacquee.
DE19628356C2 (de) * 1996-07-13 2003-04-17 Detlef Tolksdorf Verfahren zur Normalisierung des Atemmusters von mit Atmungsgeräten ausgestatteten Personen, insbesondere von Sport- und Berufstauchern, sowie Einrichtung zur Durchführung des Verfahrens
DE19939302C2 (de) * 1999-08-19 2002-02-14 Uwe Kaeuffert Einrichtung zur Rettung ertrinkender Personen
GB2390903A (en) * 2001-11-08 2004-01-21 Andrew James Marsh Portable underwater vital signs monitor
EP1571506A1 (de) * 2004-03-03 2005-09-07 ETA SA Manufacture Horlogère Suisse Elektronisches Gerät mit analogen Anzeige der Geschichte mindestens einer physikalischen Grösse, die von einem Sensor gemessen wird

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Publication number Publication date
WO2007080303A1 (fr) 2007-07-19
FR2895970A1 (fr) 2007-07-13
EP1979227A1 (de) 2008-10-15
FR2895970B1 (fr) 2009-12-04

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