US2013296787A1PendingUtilityA1

Infusion Pump

45
Assignee: SIMSPriority: Dec 18, 2009Filed: Jul 2, 2013Published: Nov 7, 2013
Est. expiryDec 18, 2029(~3.4 yrs left)· nominal 20-yr term from priority
Inventors:Yasuhiro Kawamura
A61B 5/02152A61M 5/142A61M 2205/70A61M 5/1723A61M 2205/3355A61M 2205/0244A61M 5/14228A61M 5/16877A61M 2230/30A61M 2205/50A61M 2205/3341A61M 2205/0294A61M 5/16854A61M 5/16886A61M 2205/3334A61M 2205/3553A61M 5/14244
45
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Claims

Abstract

Infusion pumps according to the present invention maximize fluid throughput while minimizing vaporization of gas by employing specific flow path architecture, flow path dimensional ranges, and voltage and frequency ranges for activation of piezoelectric bodies.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . An infusion pump comprising:
 a first body comprising a flow meter and a fluid chamber interposed between a fluid inlet channel and a fluid outlet channel; and   a second body reversibly attachable to the first body, the second body comprising at least two electrical circuits that establish electrical communication between a controller and the first body.   
     
     
         2 . The infusion pump of  claim 1  wherein a portion of the inlet channel has a reduced, continuously open cross-sectional area. 
     
     
         3 . The infusion pump of  claim 1  wherein the fluid chamber has a cross-sectional area that is greatest approximate the fluid outlet channel.

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