G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 29/00 (2006.01) A61M 5/168 (2006.01) A61M 5/142 (2006.01)
Patent
CA 2071790
Apparatus located in an implantabls ssdication infusion pump for quickly and easily detecting a condition adversely affecting medication delivery in the implantable medication infusion pump is disclosed which can r:liably detect occurrences including an occluded catheter, the presence of air in the punping mechanism, and the failure of the pumping mechanism. The systea uses the amplitude of an acoustic signal generated by operation of the pumping mechanism as compared with a bas: line signal to detect an encapsulated or occluded catheter or air in the fluid line. In addition, the system can detect a partially encapsulated or occluded catheter by detecting repeated downward sops patterns during repetitive, closely spaced pumping cycles. An apparatus and related method for quickly and easily detecting a condition adversely affecting medieation delivery in an implantable medication infusion pump is disclosed which can reliably detect occurrences including an occluded catheter, the presence of air in the pumping mechanism, and the failure of the pumping mechanism. The method uses the amplitude of an acoustic signal generated by operation of the pumping mechanism as compared with a baseline signal to detect an encapsulated or occluded catheter or air in the fluid line. In addition, the method can detect a partially encapsulated or occluded catheter by detecting repeated downward slope patterns during repetitive', closely spaced pumping cycles.
Lord Peter C.
Powell David G.
Schultz John R.
Spell Judith D.
Gowling Lafleur Henderson Llp
Medtronic Minimed Inc.
Pacesetter Infusion Ltd. D/b/a Minimed Technologies
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