{"product_id":"o-dive-portable-doppler","title":"O-Dive Portable Doppler","description":"\u003ch2\u003eO-Dive Portable Doppler\u003c\/h2\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff8000;\"\u003e\u003cstrong\u003eTake the guesswork out of your decompression!\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003eHere at ScubaDiving Gear Store we work closely with various technical dive instructors and have had many years of experience dealing with decompression diving and tuition. We've found, as you might have, that decompression time can wildly vary between diver depending on computer, decompression model, conservative settings, and gas choices. We've found that users often go with either manufacturers settings, what their mates use, or simply what gets them out of the water quickest. We loved it so much we have a unit at the shop we use for our own dives and Deco Courses.\u003cbr\u003e\u003cbr\u003eNow for the first time, a reliable, tested and proven tool exists to allow you to verify your decompression choices. The O-dive allows you to do a series of post-dive scans that are uploaded to the Azoth server for analysis, results come back and are presented in a clear and easy to read graph which will indicate the scan results. \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003e\u003cspan style=\"color: #ff8000;\"\u003e\u003cstrong\u003eWe loved it so much we have a unit at the shop we use for our own dives and Deco Courses.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003ePractical-How-Does-It-Work:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eGo Diving\u003c\/li\u003e\n\u003cli\u003ePunch your dive into your computer (or upload from Shearwater)\u003c\/li\u003e\n\u003cli\u003eScan your Left and Right Clavicle\u003c\/li\u003e\n\u003cli\u003eRepeat Scan after 30min\u003c\/li\u003e\n\u003cli\u003eReceive results from Azoth Servers\u003c\/li\u003e\n\u003cli\u003eExamine Result and simulate dive with different parameters\u003c\/li\u003e\n\u003cli\u003eChange GF\/Gas\/Stops till parameters are safer\u003c\/li\u003e\n\u003cli\u003eGo diving again with chosen changes and repeat above.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eFeatures:\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCompatible with \u003ca title=\"Shearwater Computers\" href=\"https:\/\/divelife.co.uk\/search?q=shearwater\" target=\"_blank\"\u003eShearwater Computers\u003c\/a\u003e, import your dive directly from your computer.\u003c\/li\u003e\n\u003cli\u003eWireless Charger\u003c\/li\u003e\n\u003cli\u003ePhone Integration\u003c\/li\u003e\n\u003cli\u003eMicrobubble Ultrasound Doppler\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eUsage \u0026amp; Accounts\u003c\/strong\u003e:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eUnlimited user accounts\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFree and unlimited dive analyses for the owner of the system\u003cbr\u003e(and a person of his or her choice)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFor additional users:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cblockquote style=\"margin: 0 0 0 40px; border: none; padding: 0px;\" data-mce-style=\"margin: 0 0 0 40px; border: none; padding: 0px;\"\u003e\u003c\/blockquote\u003e\nA total volume of 30 dive analyses are offered with the sensor,\u003cbr\u003ethen dive analysis from\u003cspan\u003e \u003c\/span\u003e\u003cem\u003e£3 per analysis\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eAvailable in 4 versions:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSport (40m)\u003c\/li\u003e\n\u003cli\u003eAdvanced (60m)\u003c\/li\u003e\n\u003cli\u003eCCR (85m)\u003c\/li\u003e\n\u003cli\u003eTechnical (125m)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch4\u003eO-Dive Sport (40m)\u003c\/h4\u003e\n\u003cp\u003eO’Dive Sport helps you control your diving quality and safety towards decompression sickness and the prevention thereof. \u003c\/p\u003e\n\u003cp\u003eO’Dive Sport is suitable for diving with air or nitrox on open circuit to 40 meters depth.\u003c\/p\u003e\n\u003ch4\u003eO-Dive Advanced (60m)\u003cbr\u003e\n\u003c\/h4\u003e\n\u003cp\u003eO’Dive Advanced is similar to the Sport, but with a deeper max depth.\u003c\/p\u003e\n\u003ch4\u003eO-Dive CCR (85m)\u003c\/h4\u003e\n\u003cp\u003eO’Dive CCR is designed to analyse dives up-to 85m conducted on either open or closed circuit, using; Air, Nitrox, Oxygen, Trimix and mixes, and should be considered the entry level scanner for the Technical diver.\u003c\/p\u003e\n\u003ch4\u003eO-Dive Technical (125m)\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003eO’Dive Full Technical is designed to analyse dives up-to 125m conducted on either open or closed circuit, using; Air, Nitrox, Oxygen, Trimix and Heliox mixes.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eUser Manual\u003c\/h3\u003e\n\u003cp\u003e\u003ca title=\"O-Dive User Manual\" href=\"https:\/\/o-dive.com\/wp-content\/uploads\/2021\/02\/210225-Notice-ODive-V1.7-EN.pdf\" target=\"_blank\"\u003eDownload here\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eConnecting Shearwater\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/NTLup_DPVKs\" height=\"411\" width=\"730\" allowfullscreen=\"\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" frameborder=\"0\"\u003e\u003c\/iframe\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"elementor-text-editor elementor-clearfix\"\u003e\n\u003ch3\u003e\u003cstrong\u003eDeveloped over 10 years of research\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eO’Dive is the result of knowledge acquired\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eover 10 years of research and development\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eby Azoth Systems in collaboration with laboratories, diving doctors, physiologists and diving safety professionals.\u003c\/p\u003e\n\u003cp\u003eAbout thirty experts from various backgrounds contributed to this knowledge. It is based on the analysis of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ehundreds of thousands of dives\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand the development of a technology shaped by years of user testing.\u003c\/p\u003e\n\u003cp\u003eThis momentum has given rise to 4 research theses, numerous scientific articles and several patents.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"elementor-element elementor-element-5102f28 elementor-widget elementor-widget-heading\" data-id=\"5102f28\" data-element_type=\"widget\" data-widget_type=\"heading.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ch3 class=\"elementor-heading-title elementor-size-medium\"\u003e1. O’Dive technological innovation : the missing element in decompression\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"elementor-element elementor-element-4aeaf5a elementor-widget elementor-widget-text-editor\" data-id=\"4aeaf5a\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cdiv class=\"elementor-text-editor elementor-clearfix\"\u003e\n\u003cp\u003eAzoth Systems has developed an innovation that – for the first time in the world – allows scuba divers to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003epersonalize their diving practice by taking into consideration the gas microbubbles\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003edetected in their venous system after diving.\u003c\/p\u003e\n\u003cp\u003eThis innovation is the result of the knowledge developed during\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e10 years of Research and Development\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eby Azoth Systems in collaboration with research laboratories, diving doctors, physiologists and safety professionals in scuba diving.\u003c\/p\u003e\n\u003cp\u003eAbout thirty experts from various backgrounds contributed to this knowledge. It is based on the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eanalysis of hundreds of thousands of dives\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand the development of a technology shaped by years of user testing. This momentum has given rise to 4 research theses [\u003ca href=\"https:\/\/o-dive.com\/en\/customized-decompression\/#references\"\u003e1\u003c\/a\u003e] [\u003ca href=\"https:\/\/o-dive.com\/en\/customized-decompression\/#references\"\u003e2\u003c\/a\u003e] [\u003ca href=\"https:\/\/o-dive.com\/en\/customized-decompression\/#references\"\u003e3\u003c\/a\u003e] [\u003ca href=\"https:\/\/o-dive.com\/en\/customized-decompression\/#references\"\u003e4\u003c\/a\u003e], numerous scientific articles (e.g.  [\u003ca href=\"https:\/\/o-dive.com\/en\/customized-decompression\/#references\"\u003e5\u003c\/a\u003e] [\u003ca href=\"https:\/\/o-dive.com\/en\/customized-decompression\/#references\"\u003e6\u003c\/a\u003e] [\u003ca href=\"https:\/\/o-dive.com\/en\/customized-decompression\/#references\"\u003e7\u003c\/a\u003e]) and several patents.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does the O’Dive innovation bring to scuba diving?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA tool that allows the divers to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eknow themselves better\u003c\/strong\u003e, to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003emeasure the quality of their decompression\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand the efficiency of selected procedures and to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eimprove their safety\u003c\/strong\u003e.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"elementor-element elementor-element-8ce82e0 elementor-widget elementor-widget-heading\" data-id=\"8ce82e0\" data-element_type=\"widget\" data-widget_type=\"heading.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ch3 class=\"elementor-heading-title elementor-size-medium\"\u003e2. The context and the initial motivation of Azoth Systems\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"elementor-element elementor-element-6cdde19 elementor-widget elementor-widget-text-editor\" data-id=\"6cdde19\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cdiv class=\"elementor-text-editor elementor-clearfix\"\u003e\n\u003cp\u003eWhat is the adequation between the decompression models and the divers’ physiology if we consider the fact that most of the decompression sickness accidents (DCS) do occur in spite of the compliance with the ascension procedures?\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe observation is that any decompression algorithm is only a mathematical representation of the physiological phenomenon.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMost of the accidents occur in spite of the respect of diving procedures: the divers have correctly followed the indications provided by their diving computers or their decompression tables. This situation, familiar to experienced divers, is revealing the fact that all the diving procedures (stops duration, ascent rate, gas breathed) are not necessarily adapted to all types of divers. Therefore, divers must question the relevance of the procedures they use. Given the number of possible settings of decompression algorithms, it must be noted that the divers have no tangible criteria to assess the level of suitability of the procedures to their individual physiology.\u003c\/p\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" class=\"size-medium wp-image-16182 aligncenter\" src=\"https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig1deco-300x193.png\" alt=\"\" width=\"300\" height=\"193\" srcset=\"https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig1deco-300x193.png 300w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig1deco-150x96.png 150w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig1deco-93x60.png 93w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig1deco-200x129.png 200w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig1deco-600x386.png 600w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig1deco.png 613w\" sizes=\"(max-width: 300px) 100vw, 300px\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eFigure 1\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– Illustration of the decompression stops durations for a 30’\/30m dive for seven computer models, in accordance with the conservatism levels (Source : thesis for the national instructor title – S. Le Maout, 2015)\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eThe figure above illustrates the fact that for an identical dive of 30 minutes at 30 meters breathing air – and based on the same “0” conservatism level of dive computer, the divers will be offered 12 to 21 minutes of decompression stops, depending on the computer model. Note that this is a minimum range. In practice, divers may be offered 8 to 50 minutes of stops if the full range of conservatism levels available is taken into consideration (conservatism levels at -2 to +5).\u003c\/p\u003e\n\u003cp\u003eIn this context, O’Dive’s interest is to provide divers with a criterion for assessing the quality of their practice, thus giving them the possibility to better control it.\u003c\/p\u003e\n\u003cp\u003eIn technical diving, the variability of proposed decompression procedures is even greater (see Figure 2). The majority of rebreather or Trimix divers use the Bühlmann type decompression algorithms where the ascension profile is guided by Gradient Factors (GF).\u003c\/p\u003e\n\u003cp\u003eThis modelling do offer a high level of flexibility but, without tangible criteria for the management and planification of the dives, the dispersion of the proposed ascension profiles is very large.\u003c\/p\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" class=\"size-medium wp-image-16183 aligncenter\" src=\"https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig2deco-GF-300x127.png\" alt=\"\" width=\"300\" height=\"127\" srcset=\"https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig2deco-GF-300x127.png 300w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig2deco-GF-150x63.png 150w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig2deco-GF-142x60.png 142w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig2deco-GF-200x85.png 200w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig2deco-GF-600x254.png 600w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig2deco-GF.png 763w\" sizes=\"(max-width: 300px) 100vw, 300px\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eFigure 2\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– The diversity of depths of proposed first dive stops and of decompression duration depending on GF for a Trimix dive of 25’ at 70m\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"elementor-element elementor-element-8d04b5b elementor-widget elementor-widget-heading\" data-id=\"8d04b5b\" data-element_type=\"widget\" data-widget_type=\"heading.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3 class=\"elementor-heading-title elementor-size-medium\"\u003e3. O’Dive’s underlying approach: understanding the risk of DCS for a better prevention\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"elementor-element elementor-element-d2ebb49 elementor-widget elementor-widget-text-editor\" data-id=\"d2ebb49\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cdiv class=\"elementor-text-editor elementor-clearfix\"\u003e\n\u003cp\u003eIt remains difficult to completely identify the causes leading to pathogenic bubbles. These causes are often not quantifiable, most of them are interdependent and many – especially those occurring at a microscopic level – remain unknown.\u003c\/p\u003e\n\u003cp\u003eTo answer the question of DCS risk prediction, modern scientific techniques use a probabilistic approach involving mathematical models. Those models integrate the quantifiable parameters contributing to the risk – or at least correlated with it – to output the bounds of risk of the accident.\u003c\/p\u003e\n\u003cp\u003eWith its expertise in decompression modeling [\u003ca href=\"https:\/\/o-dive.com\/en\/customized-decompression\/#references\"\u003e5\u003c\/a\u003e], Azoth Systems has developed a series of predictive models called BORA (for Bubble Occurrence – Risk Attrition) to report the results observed in multiple databases. Big databases (defence, offshore) collected in the framework of collaborations and service delivery were analysed during almost 10 years: dive parameters of hundreds of thousands of dives (air, nitrox, trimix, open-circuit and closed-circuit Heliox), the bubble dynamics (Doppler measurements) of several thousand of these dives and the hundreds of accidents they led to, have been studied to calibrate these models [\u003ca href=\"https:\/\/o-dive.com\/en\/customized-decompression\/#references\"\u003e6\u003c\/a\u003e] [\u003ca href=\"https:\/\/o-dive.com\/en\/customized-decompression\/#references\"\u003e7\u003c\/a\u003e].\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat main results does this data bring to light?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFirst of all, they corroborate the previous results and allow to better define their shapes. For the air diving, the risk increases with the depth and the duration of dive and decreases when the total decompression time (stops) increases, according to a severity index Is as represented by the graph below (Figure 3). This result is obtained by the statistical analysis based on logistic regression of three defence databases accumulating more than a million of dives and about 300 cases of accidents (French Navy, US Navy and DRDC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" class=\"size-medium wp-image-16184 aligncenter\" src=\"https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig3courbe-is-300x169.png\" alt=\"\" width=\"300\" height=\"169\" srcset=\"https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig3courbe-is-300x169.png 300w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig3courbe-is-150x85.png 150w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig3courbe-is-768x434.png 768w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig3courbe-is-106x60.png 106w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig3courbe-is-200x113.png 200w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig3courbe-is-600x339.png 600w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig3courbe-is.png 935w\" sizes=\"(max-width: 300px) 100vw, 300px\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eFigure 3\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– The probability of DCS (PDCS) as a function of severity index\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eIs\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003etaking into the account the depth, the duration of dive and the total decompression duration. The examples of parameters are presented as dive duration\/maximal depth for the square air dives.\u003c\/em\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe same trends were proved for deep dives (DRDC database and COMEX heritage), allowing to extend the construction of severity index Is to multi-gas setting, with:\n\u003cul\u003e\n\u003cli\u003eA major interest in the introduction of Helium in the breathing gas composition\u003c\/li\u003e\n\u003cli\u003eThe interest of the oxygen-enriched breathing gas in the decompression phase\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eboth well characterised with respect to the risk of the accident (logistic regression).\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe pic of vascular microbubbles, observable in precordial or subclavian zones after dive, is the essential data for prediction of risk : accounting for it allows to refine the DCS probability curves (Figure 4). Indeed, the presence of microbubbles acts as an amplificator of risk associated to the dive severity [\u003ca href=\"https:\/\/o-dive.com\/en\/customized-decompression\/#references\"\u003e7\u003c\/a\u003e]: for dives with depths and durations necessitating decompression stops (i.e. dives on and above the security curve of no decompression) the observed risk ratio between a dive without or with few vascular microbubbles and a dive with a high bubble grade is about 10. This result is based on the analysis of a DRDC database including dive profiles, bubbles measurements in precordial and subclavian zones and accident status (more than 8000 exposures in hyperbaric chamber with more than 100 DCS).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" class=\"size-medium wp-image-16185 aligncenter\" src=\"https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig4courbe-is-grade-300x189.png\" alt=\"\" width=\"300\" height=\"189\" srcset=\"https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig4courbe-is-grade-300x189.png 300w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig4courbe-is-grade-1024x646.png 1024w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig4courbe-is-grade-150x95.png 150w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig4courbe-is-grade-768x485.png 768w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig4courbe-is-grade-95x60.png 95w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig4courbe-is-grade-200x126.png 200w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig4courbe-is-grade-600x379.png 600w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig4courbe-is-grade.png 1158w\" sizes=\"(max-width: 300px) 100vw, 300px\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eFigure 4\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– DCS probability laws as a function of the dive severity index (\u003cstrong\u003eIs\u003c\/strong\u003e) for 5 levels of post-dive microbubbles (measurements 30’ after surfacing)\u003c\/em\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDoppler bubble measurements in subclavian zone characterize the amplification of the risk better than precordial measurements [\u003ca href=\"https:\/\/o-dive.com\/en\/customized-decompression\/#references\"\u003e7\u003c\/a\u003e]\u003c\/li\u003e\n\u003cli\u003eThe depth of the first stop and the ascent rate to the first stop depend on the type of breathed gas (more or less rich in Helium) and on the exposure severity (COMEX heritage). The introduction of deep stops finds its limits: Azoth cannot evaluate the benefits of deep stops when they are not in this heritage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"elementor-element elementor-element-a6d8c90 elementor-widget elementor-widget-heading\" data-id=\"a6d8c90\" data-element_type=\"widget\" data-widget_type=\"heading.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ch3 class=\"elementor-heading-title elementor-size-medium\"\u003e4. How does the O’Dive application operate? What information is provided to divers?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"elementor-element elementor-element-998de2c elementor-widget elementor-widget-text-editor\" data-id=\"998de2c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cdiv class=\"elementor-text-editor elementor-clearfix\"\u003e\n\u003cp\u003e\u003cstrong\u003eAfter each dive\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efollowed by a microbubble measurement, and based on the dive profile imported into the application, O’Dive provides divers with\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ean information on the quality of their desaturation\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThere are ideally two series of measurements, the first 30’ after surfacing* and the second 30′ later, within the optimal time interval for the bubble peak detection.\u003cbr\u003e\u003cem\u003e*For dives with a helium fraction higher as the nitrogen one, we recommend to perform the first series of measurements as soon as possible after surfacing, without, however, making additional efforts due to precipitation.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eThis indication is expressed by means of a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003equality index (QI)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith a value ranging between 0 and 100%. It reflects a relative risk.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow is the quality index QI computed?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe QI index takes into account both\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ethe dive severity\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(Is index, reflecting the physiological stress associated to the dive parameters) and\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ethe level of microbubbles\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003emeasured after dive using the vascular Doppler sensor.\u003cbr\u003eThe 100% value is a risk reference level (less than 5 per 10,000). It corresponds to the level of physiological stress experienced by a diver during a no-decompression air dive not generating any vascular microbubbles.\u003c\/p\u003e\n\u003cp\u003eThe QI index is computed using a simple formula\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQI=100-(Sc+Bc)\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ewith:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSc (Severity component, ranging between 0% and 100%): specific to the dive (exposure, decompression procedure, breathed gases), it reflects the Is index\u003c\/li\u003e\n\u003cli\u003eBc (Bubbles component, ranging from 0% to 40%): specific to the subject’s response to the dive\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAs the QI index decreases, the DCS risk increases. Three zones have been identified to guide the user:\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" class=\"size-medium wp-image-16186 aligncenter\" src=\"https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-14-at-12.18.51-300x115.png\" alt=\"\" width=\"300\" height=\"115\" srcset=\"https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-14-at-12.18.51-300x115.png 300w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-14-at-12.18.51-1024x393.png 1024w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-14-at-12.18.51-150x58.png 150w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-14-at-12.18.51-768x295.png 768w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-14-at-12.18.51-156x60.png 156w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-14-at-12.18.51-200x77.png 200w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-14-at-12.18.51-600x231.png 600w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-14-at-12.18.51.png 1270w\" sizes=\"(max-width: 300px) 100vw, 300px\"\u003e\u003c\/p\u003e\n\u003cp\u003eStatistical analysis shows, with a good confidence level, that a QI index lower than 75% is associated with a risk higher than 2 per 10 000 and a QI index lower than 50% is associated with a risk greater than 1% (lower bound of the risk).\u003c\/p\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" class=\"size-medium wp-image-16187 aligncenter\" src=\"https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig5IQ-300x182.png\" alt=\"\" width=\"300\" height=\"182\" srcset=\"https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig5IQ-300x182.png 300w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig5IQ-150x91.png 150w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig5IQ-99x60.png 99w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig5IQ-200x121.png 200w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/fig5IQ.png 391w\" sizes=\"(max-width: 300px) 100vw, 300px\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eFigure 5\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– Examples of IQ index for three dives (50m, 51m and 40m).\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cbr\u003eDetails of the result\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhen the quality index does not reach 100%, the diver can access detailed information.\u003cbr\u003eThe decompression optimisation margin (i.e. the complement of the QI to 100%) can be visualized splitted in two components: the severity of the dive profile (Sc) and the production of vascular microbubbles (Bc).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" class=\"size-medium wp-image-16188 aligncenter\" src=\"https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/result-300x133.jpg\" alt=\"\" width=\"300\" height=\"133\" srcset=\"https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/result-300x133.jpg 300w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/result-1024x454.jpg 1024w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/result-150x67.jpg 150w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/result-768x341.jpg 768w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/result-135x60.jpg 135w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/result-200x89.jpg 200w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/result-600x266.jpg 600w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/result.jpg 1535w\" sizes=\"(max-width: 300px) 100vw, 300px\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eDetail of a bargraph’s components\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eNote that two different dives of the same diver, with very different bubble levels, can lead to similar QI values (for example: a dive with moderate severity and many bubbles vs. a dive with high severity and few bubbles) .\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"elementor-element elementor-element-0386480 elementor-widget elementor-widget-heading\" data-id=\"0386480\" data-element_type=\"widget\" data-widget_type=\"heading.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3 class=\"elementor-heading-title elementor-size-medium\"\u003e5. What other feature does O’Dive offer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"elementor-element elementor-element-dd41b2a elementor-widget elementor-widget-text-editor\" data-id=\"dd41b2a\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cdiv class=\"elementor-text-editor elementor-clearfix\"\u003e\n\u003cp\u003eThe O’Dive application is divided into 4 versions: Sport, Advanced, CCR and Technical. They enable the management of all kind of dives: from open-circuit air dives to closed-circuit (rebreather) dives with Trimix diluent up to 125 meters (details available here:\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/o-dive.com\/commercial-offers\/\"\u003ehttps:\/\/o-dive.com\/commercial-offers\/\u003c\/a\u003e). In addition to the results dynamically computed for each dive, O’Dive allows to visualise the simulated effects of the modification of a set of dive parameters on the QI index.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIn the\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eSport\u003c\/em\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eAdvanced\u003c\/em\u003e\u003cspan\u003e \u003c\/span\u003eversions\u003c\/strong\u003e, the diver can quantify the benefits of the following options:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExtend the duration of the last stop\u003c\/li\u003e\n\u003cli\u003ePlan the decompression using Nitrox richer in oxygen, with a possibility to set the value up to 100%O2\u003c\/li\u003e\n\u003cli\u003ePlan the use of Nitrox as bottom gas, setting the value of %O2 up to 1.4 bar of Pp O2\u003c\/li\u003e\n\u003cli\u003eSet the Low and High Gradient Factors (GF) being guided by the application towards the optimal choices of the first stop and the total decompression time.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" class=\"size-medium wp-image-16189 aligncenter\" src=\"https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/Sans-titre-11-1-300x180.png\" alt=\"\" width=\"300\" height=\"180\" srcset=\"https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/Sans-titre-11-1-300x180.png 300w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/Sans-titre-11-1-1024x614.png 1024w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/Sans-titre-11-1-150x90.png 150w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/Sans-titre-11-1-768x461.png 768w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/Sans-titre-11-1-1536x922.png 1536w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/Sans-titre-11-1-100x60.png 100w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/Sans-titre-11-1-200x120.png 200w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/Sans-titre-11-1-600x360.png 600w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/Sans-titre-11-1.png 1600w\" sizes=\"(max-width: 300px) 100vw, 300px\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cem\u003eExample of 31m Air\/Nitrox dive, result and planification\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eCCR\u003c\/em\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eTechnical\u003c\/em\u003e\u003cspan\u003e \u003c\/span\u003eapplications\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoffers an extended list of functionalities, including the following simulation options:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExtend the duration of the last stop\u003c\/li\u003e\n\u003cli\u003eSet the PpO2 value of the high set-point (closed circuit decompression)\u003c\/li\u003e\n\u003cli\u003ePlan the open circuit decompression using Nitrox richer in oxygen, with a possibility to set the value up to 100%O2\u003c\/li\u003e\n\u003cli\u003eFor air dives, plan the use of Trimix as bottom gas. After setting the value of %He, the application gives the optimal value of %O\u003csub\u003e2\u003c\/sub\u003e\u003cspan\u003e \u003c\/span\u003edepending on CCR or OCR mode\u003c\/li\u003e\n\u003cli\u003eChange the Trimix composition by setting different %He in CCR or OCR mode.\u003c\/li\u003e\n\u003cli\u003eSet Low and High GF being guided by the application towards the most suitable values, reflecting the choice of the first stop and the total decompression time\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" class=\"size-medium wp-image-16190 aligncenter\" src=\"https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/Sans-titre-11-copie2-300x180.png\" alt=\"\" width=\"300\" height=\"180\" srcset=\"https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/Sans-titre-11-copie2-300x180.png 300w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/Sans-titre-11-copie2-1024x614.png 1024w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/Sans-titre-11-copie2-150x90.png 150w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/Sans-titre-11-copie2-768x461.png 768w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/Sans-titre-11-copie2-1536x922.png 1536w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/Sans-titre-11-copie2-100x60.png 100w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/Sans-titre-11-copie2-200x120.png 200w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/Sans-titre-11-copie2-600x360.png 600w, https:\/\/nautilus.uk\/wp-content\/uploads\/2021\/07\/Sans-titre-11-copie2.png 1600w\" sizes=\"(max-width: 300px) 100vw, 300px\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eExample of 74m CCR dive, result and planification\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eDive after dive, a customised model that is specific to each diver is refined to reflect as accurately as possible the added value of each of the above options on the safety.\u003c\/p\u003e\n\u003cp\u003eFor this purpose, the quality index QI was designed in such a way that when it increases by 33%, the diver’s safety level is multiplied by 10. This security improvement is shown in the simulation window.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"elementor-element elementor-element-f623a63 elementor-widget elementor-widget-heading\" data-id=\"f623a63\" data-element_type=\"widget\" data-widget_type=\"heading.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3 class=\"elementor-heading-title elementor-size-medium\"\u003e6. What are the limitations of the information provided by the system?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"elementor-element elementor-element-8c19da4 elementor-widget elementor-widget-text-editor\" data-id=\"8c19da4\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cdiv class=\"elementor-text-editor elementor-clearfix\"\u003e\n\u003cp\u003eIt is important to clearly define the area of application of O’Dive, which, as should be noted, does not fall into the category of medical devices. Some information, such as medical information, is voluntarily not considered by the system.\u003cbr\u003eThe consideration of medical information or observations that are part of the regulatory visit process remains essential and must be separated from the use of the product.\u003c\/p\u003e\n\u003cp\u003eThe objective of the O’Dive system is, it should be reminded, to assess the quality level of a practice with respect to the quality index QI taking into account:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ethe severity index of diving exposure “Is”, the risk factor related directly to dive parameters;\u003c\/li\u003e\n\u003cli\u003ethe quantity of vascular microbubbles detected after the dive, acting as a risk amplifier.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eStudies carried out using some of the best documented databases illustrate the relevance and meaning of this approach to DCS prevention. O’Dive is therefore a very useful tool, allowing divers to get to know themselves better and to improve their practice with regards to the risk of decompression sickness\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"The ScubaDiving Gear Store","offers":[{"title":"Sport","offer_id":52479384289544,"sku":"ODIVE40","price":640.0,"currency_code":"GBP","in_stock":true},{"title":"Advanced","offer_id":52479384322312,"sku":"ODIVE60","price":690.0,"currency_code":"GBP","in_stock":true},{"title":"CCR","offer_id":52479384355080,"sku":"ODIVE85","price":790.0,"currency_code":"GBP","in_stock":true},{"title":"Technical","offer_id":52479384387848,"sku":"ODIVE125","price":840.0,"currency_code":"GBP","in_stock":true}],"url":"https:\/\/bidnamic.store\/products\/o-dive-portable-doppler","provider":"Bidnamic Store","version":"1.0","type":"link"}