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Joined: Feb 2009
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Hello All

Any one out there working with or worked on IPL and/or Cosmetic surgery lasers?

Am very interested in finding out testing methodologies and test equipment being used.

Many thanks.

Phil

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No doubt if we sat down together in front of each unit we could come up with a decent I/PM procedure. Just by following the usual process ... how to test (quickly and cheaply) being a major consideration.

But what about calibration? Do these things "self cal"? Can calibration be done in-house? How expensive is the test kit? If calibration needs to be done outside by an accredited body, is it worth having your own test kit?

How many of these things do you support ... are they designed with in-house serving in mind? They appear to be (what we might call) semi-complex.

It's an interesting topic. I have zero experience of these things myself. Let's get to the bottom of it.

Meanwhile, here are some clues to kick things off:-

1) MedLaser
2) Ophir


If you don't inspect ... don't expect.
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Hi

Great to hear from you Geoff.

Well, IPL and Cosmetic lasers defiantly come under ASNZS 3551 as they are therapeutic, so they need to be performance, electrically safety tested and details retained yearly.

So, I'm diving down this rabbit hole, I've got the Ophir USB 'module' and am looking at the IPL sensor head (many $$$). Ive bought a couple of other sensor head as well from eBay....

Am very interested in discussing with someone who has tested an IPL machine with the above mentioned equipment.


Thanks

phil

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Have you asked the manufacturer what their recommended maintenance regime is Philip? and whether they will supply a technical manual?


Be Proactive and reactive.
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Hi all at EBME, A little to join in on this one, there are no answers to the IPL question from others, so I thought I would say what we do here at Lumibird/Quantel/Daybreak Medical.
We have the C stim system, you can see it here; https://ophthalmology.lumibirdmedical.com/products/c-stim-en

To check its output, (yes we check the output from it), we have photo meters to measure the output. This can vary from 2 to 14J per square cm For those who dont know how much that is, thats like standing 2cm from a lighthouse and looking directly into the light with it being on all the time, and not rotating. ie you should never look into the light. The output head has to be cooled, and it has a shot count, ie, it can be used more than X times. If it is out we can calibrate the output power, but its very difficult as we cant ever look into the light.
The test kit is expensive and needs calibrating, its an expensive way of checking the output, patient results are very good, as with all IPL systems for Ophthalmology.

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Hello Howard.

What does the manual have to say about PM (that is, how to PM) and then calibration?

You mention the expensive test equipment (no surprise there, then). Is there a simpler way of checking output ... perhaps in an OK/Not OK fashion?

Clinically, does absolute output (J/cm2) matter that much? Surely there must be a +/- % allowable tolerance? And how about wavelength; is that important enough to be measured and reported?


If you don't inspect ... don't expect.
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Hi all and Geoff,
To answer the question re PM of our IPL, we have to set the firing head on our meter in a special holder, once that is done, enter the service mode and measure the first point of light, at 1J/cm2. We can then adjust the light output to be correct within 20%. This is repeated at 2,3,4,5J/cm2 etc up to 14J/cm2. Tolerance is +/-20% Then check the water cooling is correctly running, and observe the temperature falling as the head cools down. (the system has 1.5 of water in it). Every time the flash light is fired the lifetime of the head is reduced, so you cant just merrily fire continuously.

As far as test kit goes, there are various test meters for light that can cope with up to 20J/cm2 of light, at 900-1200nm. The wavelength of the light is fixed, measuring wavelength would be very difficult as its such high power. A simple wavelength meter would not be robust enough to work with the high levels of light.

You cant visually see the difference between 1J/cm2 and 2J/cm2, the eye is not that good, and you cant look at the light, you can only look at the reflection using goggles or eye protection to reduce the levels and protect the engineer. Safety first and foremost. The amount of light from our system is huge, you would never look directly into a camera flashlight, the IPL is many times brighter.

re power settings, it does make a difference, certain powers for certain conditions, over stimulation of the skin can cause sides effects, under stimulation wont be clinically effective. We always want to work clinically with ALARA (As low as possible) in mind. I am not a clinician, if anyone wants to see more clinical info look at the website... (this is a technical post)

The test and calibration of the IPL laser from Quantel is tightly regulated. The amount of light that comes from the head is extremely bright, its not a laser, but our IPL system needs to be worked on very carefully. Safety first.

1 member likes this: Geoff Hannis

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