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Medtronic MiniMed 640G System
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<blockquote data-quote="irrationalJohn" data-source="post: 872034" data-attributes="member: 187593"><p>I think I should preface by making it clear that I live in the US ... upstate New York to be more specific.</p><p></p><p>I use Enlites with a Paradigm Revel (723) pump. The Enlites I use are "first gen" because the "(slightly) Enhanced Enlite" which the rest of the world is currently using has not yet been approved for use in the US. For that matter, the US FDA, which is our gateway governmental agency deciding which medical devices are or are <strong>not </strong>available in the US, has decided we should not even be aware that Medtronic sells the 640G. US Medtronic reps are not supposed to talk about it. At all.</p><p></p><p>One can only imagine the shocked & horrified looks on FDA faces on that day when they learn about "the Internet". <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /></p><p></p><p>My main point here is that whatever I think I may know about the 640G should be read with a skeptical eye. My government's policy is that the world would be a better place if I did not know anything until <strong>after </strong>they decide to approve the device. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite12" alt="o_O" title="Er... what? o_O" loading="lazy" data-shortname="o_O" /></p><p></p><p></p><p>Here's my short answer about confirming 12 day Enlite use: <em>"Hell, no! Of course, not!"</em></p><p><em></em></p><p>Here's the longer version.</p><p></p><p>In my experience and reading, Enlite's have always been finicky. To my mind that seems to be the greatest difference between the Enlite and Dexcom G4. People seem to claim typically, consistently good results using the Dexcom. However, the reports on the Enlite vary. Some people appear to just slap those suckers on and then get good results. Others appear to view the Enlite more as "Satan's CGM sensor!" <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite16" alt=":banghead:" title="Bang Head :banghead:" loading="lazy" data-shortname=":banghead:" /></p><p></p><p>Given that background, how the heck can anyone assure you what sort of results you'll get using the Enlite CGM?</p><p></p><p>To complicate matters even more, remember that you will be using Enlites with the new 640G and the also new Guardian 2 Link transmitter. There are some known hardware differences as well as a bunch of speculations about firmware differences for these devices. So while the experiences of other people who used Enlite with earlier devices may be relevant, they also may <strong>not</strong>.</p><p></p><p>The firmware in the 640G <strong>may</strong> use new calibration algorithms which would affect the accuracy and utility of the CGM results. There is also speculation that the firmware in the Guardian 2 Link may included <em>"additional diagnostics"</em> which monitor the health of the sensor. This could also affect the results you get using the system.</p><p></p><p>All I think you can count on is that Medtronic promises that the Enlite should work for 6 days. (At least in the US. Not sure what is promised in the UK.) So if the sensor does not work during that time, then they should replace it for you if you report the failure to them. However after six (?) days, all bets are off since the sensor was never supposed to last longer than that ... officially.</p><p></p><p>Given the apparent variable results reported by different people, I think the only way to know if you, in particular, could go longer than 6 days would be to try it and see how it works for you. Assuming that the 640G will let you reset & continue to use an inserted Enlite.</p><p></p><p>In hindsight I am puzzled that I haven't seen any clear reports from anyone using the 640G on what happens if you attempt to remove the transmitter, recharge it, then reconnect it to an existing sensor and start it as a "New Sensor". I hope we will eventually get some feedback on this from folks who had previously successfully done this with the early Medtronic pumps. My opinion is that it would be bone headedly stupid for Medtronic to not allow this to work. But that's not the same thing as saying Medtronic would never do this stupid thing. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite3" alt=":(" title="Frown :(" loading="lazy" data-shortname=":(" /></p></blockquote><p></p>
[QUOTE="irrationalJohn, post: 872034, member: 187593"] I think I should preface by making it clear that I live in the US ... upstate New York to be more specific. I use Enlites with a Paradigm Revel (723) pump. The Enlites I use are "first gen" because the "(slightly) Enhanced Enlite" which the rest of the world is currently using has not yet been approved for use in the US. For that matter, the US FDA, which is our gateway governmental agency deciding which medical devices are or are [B]not [/B]available in the US, has decided we should not even be aware that Medtronic sells the 640G. US Medtronic reps are not supposed to talk about it. At all. One can only imagine the shocked & horrified looks on FDA faces on that day when they learn about "the Internet". ;) My main point here is that whatever I think I may know about the 640G should be read with a skeptical eye. My government's policy is that the world would be a better place if I did not know anything until [B]after [/B]they decide to approve the device. o_O Here's my short answer about confirming 12 day Enlite use: [I]"Hell, no! Of course, not!" [/I] Here's the longer version. In my experience and reading, Enlite's have always been finicky. To my mind that seems to be the greatest difference between the Enlite and Dexcom G4. People seem to claim typically, consistently good results using the Dexcom. However, the reports on the Enlite vary. Some people appear to just slap those suckers on and then get good results. Others appear to view the Enlite more as "Satan's CGM sensor!" :banghead: Given that background, how the heck can anyone assure you what sort of results you'll get using the Enlite CGM? To complicate matters even more, remember that you will be using Enlites with the new 640G and the also new Guardian 2 Link transmitter. There are some known hardware differences as well as a bunch of speculations about firmware differences for these devices. So while the experiences of other people who used Enlite with earlier devices may be relevant, they also may [B]not[/B]. The firmware in the 640G [B]may[/B] use new calibration algorithms which would affect the accuracy and utility of the CGM results. There is also speculation that the firmware in the Guardian 2 Link may included [I]"additional diagnostics"[/I] which monitor the health of the sensor. This could also affect the results you get using the system. All I think you can count on is that Medtronic promises that the Enlite should work for 6 days. (At least in the US. Not sure what is promised in the UK.) So if the sensor does not work during that time, then they should replace it for you if you report the failure to them. However after six (?) days, all bets are off since the sensor was never supposed to last longer than that ... officially. Given the apparent variable results reported by different people, I think the only way to know if you, in particular, could go longer than 6 days would be to try it and see how it works for you. Assuming that the 640G will let you reset & continue to use an inserted Enlite. In hindsight I am puzzled that I haven't seen any clear reports from anyone using the 640G on what happens if you attempt to remove the transmitter, recharge it, then reconnect it to an existing sensor and start it as a "New Sensor". I hope we will eventually get some feedback on this from folks who had previously successfully done this with the early Medtronic pumps. My opinion is that it would be bone headedly stupid for Medtronic to not allow this to work. But that's not the same thing as saying Medtronic would never do this stupid thing. :( [/QUOTE]
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