Implantable infusion pump:


MEDSTREAM INFUSION PUMP
CONTINUOUSLY DELIVERS PAIN
MEDICATION
Medstream by Johnson & Johnson for
continuously delivering pain
medication.
The MEDSTREAM Programmable
infusion pump is used to discharge  a
drug in the intrathecal space (spinal
canal).  The drug needs to be given
this way to avoid the blood brain
barrier.
The flow rate can be variable, and
varies over the day, in the range of 0.1
to 4ml/24h.
The pain pump  is operated with gas
pressure and therefore requires only a
very low battery power for drug
delivery: therefore  it has  a relatively
long life.

Safety alert 4/2010: pump interferes
with MRI