# [IP] MM delivery

```margo wrote
>I think the basic question here is whether the Medtonics
> pumps can deliver more frequently than every ten minutes,
> which I am under the impression they can't.

Margo:

YES, the minimed pump CAN deliver insulin every three minutes.  IF your basal
rate is set at 2.0 units per hour.  You will then get .1 every three minutes.
In 15 minutes you will have received 1/2 a unit; in 30 minutes you will have
received one unit; in 45 minutes you will have received 1 1/2 unit...every
three minutes you will hear a little click and the lead screw will turn and
deliver you .1 of one unit of insulin

The ONLY time a minimed pump will deliver insulin only every ten minutes is
IF your basal rate is set to .6 units per hour.  Your will then get .1 every
ten minutes. In 1/2 hour, you will have received 3 little clicks (one every 10
minutes); and in an hour your will have received 6 little clicks for a total
of 1 unit

For every other basal rate, the pump divides the basal into .1 increments and
spaces them out evenly over the hour.....
.1 basal rate = 1 click on the hour
.2 basal rate = 2 clicks, 1 on the hour, 1 on the 1/2
.3 basal rate = 3 clicks, 1 on the hour, 1 on the 20 and 1 on the 40
.4 basal rate = 4 clicks, 1 on the hour, 1 on the 15, 1 oon the 1/2 and one
on 45
.5 basal rate = 5 clicks, 1 on hour, 1 on 12, 1 on 24, 1 on 36, 1 on 48
.6 basal rate - well every 10 minutes
etc...
1 unit basal rate = 10 clicks, 1 every 6 minutes
and SO ON.........

The MOTORS driving the pumps work differently.  Above is how the minimed's
solenoid motor works.  The "others" take your basal rate and divide it by 20,
and deliver 1/20th of your set basal rate every 3 minutes (20 x 3 = 60
minutes).
If your basal rate is set at 1.0 unit per hour, that means every three
minutes you will get 1/20th of 1 unit of insulin....someone else do the
math.....something like .05 every 3 minutes. If your basal rate is .2 per hour,
you
willget 1/20th of .2 units of insulin per hour - or .01 unit every three
minutes....the minimed would give you a click at the 1/2 hour mark and a click
at the
hour mark...the "others" divide the .2 into 20 miniscule doses, which makes a
difference for "some" people.

The bottom line, and the only thing that really matters, is that at the end
of the hour, ALL pumps will have delivered the SET basal amount...whether it
was in evenly spaced out clicks of .1 or if it was miniscule amounts of insulin
every 3 minutes

capiche?

SSP
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