Reciprocation pump and a dialysis apparatus equipped with the reciprocation pump
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United States of America Patent
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Feb 6, 2018
Issued Date -
N/A
app pub date -
May 24, 2012
filing date -
Nov 24, 2009
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Abstract
A reciprocation pump has a supply liquid-side sub-pumping chamber arranged adjacent to the supply liquid-side pumping chamber at an external side. A waste liquid-side sub-pumping chamber is arranged adjacent to the waste liquid-side pumping chamber at an external side. A rod extends through the supply liquid-side sub-pumping chamber, the supply liquid-side pumping chamber, the waste liquid-side pumping chamber and the waste liquid-side sub-pumping chamber. The rod is connected to the reciprocation mechanism and the driving source to transmit a driving force of the driving source to the reciprocation mechanism. Sealing members are arranged, respectively, in walls through which the rod extends to partition the supply liquid-side pumping chamber and the supply liquid-side sub-pumping chamber as well as the waste liquid-side pumping chamber and the waste liquid-side sub-pumping chamber.
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