Gas-filled chamber for catheter pump motor assembly
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United States of America Patent
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-
Nov 8, 2022
Grant Date -
Jan 25, 2018
app pub date -
Jul 19, 2017
filing date -
Jul 21, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A catheter pump system is disclosed. The catheter pump system can include a shaft assembly and an impeller coupled with a distal portion of the shaft assembly. The catheter pump system can include a motor assembly, the motor assembly comprising a chamber and a shaft-driving portion disposed in the chamber. The shaft-driving portion can be configured to impart rotation to the impeller through the shaft assembly. The chamber can be filled with a gas that at least partially surrounds the shaft-driving portion. A fluid pathway can convey fluid proximally during operation of the catheter pump system. A bypass pathway can be in fluid communication with the fluid pathway, the bypass pathway configured to direct at least a portion of the fluid to bypass the chamber.
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