EP1979227A1 - Verfahren und vorrichtung für selbstüberwachung und diagnose beim tauchen ohne tauchergerät - Google Patents

Verfahren und vorrichtung für selbstüberwachung und diagnose beim tauchen ohne tauchergerät

Info

Publication number
EP1979227A1
EP1979227A1 EP07717835A EP07717835A EP1979227A1 EP 1979227 A1 EP1979227 A1 EP 1979227A1 EP 07717835 A EP07717835 A EP 07717835A EP 07717835 A EP07717835 A EP 07717835A EP 1979227 A1 EP1979227 A1 EP 1979227A1
Authority
EP
European Patent Office
Prior art keywords
rate
diving
spo2
diver
data
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.)
Granted
Application number
EP07717835A
Other languages
English (en)
French (fr)
Other versions
EP1979227B1 (de
Inventor
Yvan Milla
Michel Benisty
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1979227A1 publication Critical patent/EP1979227A1/de
Application granted granted Critical
Publication of EP1979227B1 publication Critical patent/EP1979227B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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.
  • a device of the diving computer type, which generally comprises:
  • a means, of the sensor type of capturing and measuring the ambient and physiological physical data of the plunger such as the diving depth, the apnea time and the recovery time, the rate of saturation of the hemoglobin with oxygen ( SpO2) and heart rate; a clock enabling said data to be input at regular time intervals;
  • means, of the microprocessor type for analyzing the data entered with respect to a pre-recorded model and for controlling a device that signals to the diver a risk of a diving incident and, if necessary, triggers a rescue element; means, of the memory type, of the recording of the data entered, of the results of the analysis and of the data relating to the prerecorded model.
  • the known devices do not make it possible to determine the syncopal state of the diver in order to prevent it and to intervene. They only suspect a syncopal state if the subject is not reassembled in time.
  • 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 heart rate expressed in pulses per minute, as well as information related to the aquatic environment, such as the depth of the dive in meters and a memory capable of recording at least five hours (one measurement per second).
  • the method according to the invention is essentially characterized in that it consists, to automatically detect a risk of syncope during dive, to analyze the rate of desaturation of the oxygen saturation rate of hemoglobin (SpO2) which is established according to the slope of said variation in the vicinity of the rate considered at a given instant.
  • the values of the saturation rate and the slope of its variation, measured on an apnea diver, are compared, at each moment, with the model, pre-recorded, which is represented by the curve "saturation rate according to the slope of its variation which delimits the non-syncopal and syncopal state areas and which has been established experimentally from a well-defined number of subjects for which the rate and slope of each of them have been measured. its variation in syncopal state limit.
  • the device for its implementation which is generally attached to the wrist, essentially comprises means, sensor type, capture and measurement of ambient physical and physiological data of the plunger such as diving depth, apnea time and recovery time, saturation rate of oxygen hemoglobin (SpO2) and heart rate.
  • means, sensor type, capture and measurement of ambient physical and physiological data of the plunger such as diving depth, apnea time and recovery time, saturation rate of oxygen hemoglobin (SpO2) and heart rate.
  • Said sensor 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.
  • FIG. 2 represents the curve "saturation rate as a function of the slope of its variation" which has been established from a plurality of divers for whom we have measured, for each of them, the saturation rate SpO2 and the slope of its variation in syncopal state limit and which delimits the zone of passage from a non-syncopal state or very probably not syncopal to a syncopal state or very probably syncopal.
  • the self-diagnosis and rescue method for submarine snorkelers is implemented by means of a diving device essentially comprising:
  • means for analyzing the data entered with respect to a pre-recorded model and for controlling a device that signals to the diver a risk of a diving incident and, if necessary, triggers a rescue element;
  • Said method consists, for automatically detecting a risk of syncope during dive, of analyzing the rate of desaturation of the hemoglobin saturation rate in oxygen (SpO2) which is established as a function of the slope (P) of said variation at neighborhood of said rate at a given moment.
  • the values of the saturation rate SpO2 and the slope (P) of its variation, measured on an apnea diver, are compared, at each moment, 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 SpO2 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 method also includes displaying, in real time, the dive device, dive depth, heart rate, saturation rate, apnea time and recovery time.
  • the device for carrying out the method according to the invention comprises, which is generally fixed to the wrist, essentially comprises means, of the sensor type, of capturing and measuring ambient physical and physiological data of the plunger such as the diving depth. , apnea time and recovery time, oxygen saturation (SpO2) and heart rate.
  • Said sensor 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.
  • 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.
  • Said diving device more particularly comprises: - a 10-atmosphere sealed housing and a hemoglobin oxygen saturation (SpO2) sensor integrated into a neoprene glove: the glove and the sensor will be consumable, but reusable in a second time; absence of deterioration;
  • SpO2 hemoglobin oxygen saturation
  • a life jacket with CO2 capsule connected to the watch by electronic interface said capsule will also be consumable and the vest and the watch will be reusable.
  • the SpO2 sensor is integrated into a neoprene glove attached 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 enough insulation of the cold to mitigate a risk potential for peripheral vasoconstriction due to cold, with both compression and cold factors affecting signal quality.
  • the device is supposed to give an SpO2 value 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 SpO2 rate 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 case study showed that the desaturation slope associated with the saturation rate is the determining factor for the detection of syncope.
  • the computer calculates the desaturation slope, according to a mathematical model, according to the last SpO2 measurements.
  • the desaturation slope corresponds approximately to the rate of desaturation (slope of the tangent to the SpO2 curve at time t, expressed in% / second).
  • Each second it analyzes a rate of SpO2 associated with a slope.
  • At each SpO2 level corresponds a limit slope, determined by the clinical study carried out beforehand, above which a syncopal accident is highly suspect. This data will be saved in the computer database.
  • the SpO2 rate and its corresponding slope are analyzed: if the slope is greater than or equal to that prerecorded in the database for the same SpO2 rate, the computer will then detect a syncopal signal; otherwise he will not detect it.
  • the computer analyzes the SpO2 rate as a function of depth every second. It has also been predetermined, in the database of the computer, for each depth, a SpO2 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.
  • the vitality test procedure may be as follows:
  • the device - emitting a first sound and / or light signal for 10 seconds that the diver must stop by pressing any button on the watch; - if the diver does not intervene within ten seconds, the device then triggers the inflation of the lifejacket;
  • 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.

Landscapes

  • 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)
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 true EP1979227A1 (de) 2008-10-15
EP1979227B1 EP1979227B1 (de) 2013-03-13

Family

ID=36738124

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

Country Status (3)

Country Link
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
EP4231901A4 (de) 2020-10-24 2024-09-25 Spectronix Inc Optische vorrichtung, system und verfahren zur überwachung von chromophoren auf blut

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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007080303A1 *

Also Published As

Publication number Publication date
WO2007080303A1 (fr) 2007-07-19
FR2895970A1 (fr) 2007-07-13
FR2895970B1 (fr) 2009-12-04
EP1979227B1 (de) 2013-03-13

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