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US 12,721,775 B2Granted
High frequency chest wall oscillation pump
AssigneeHill-Rom Services Pte. Ltd.
InventorsQingqing Koh, Daryl Zhi Wei Ho
Life of this patent
Estimating the term…
Abstract
Devices, systems, and methods for high frequency chest wall oscillation pumps can include a pressure cavity, defined by one or more diaphragms, for fluid pressurization to provide pressure oscillation, a drive assembly can be arranged to provide reciprocation to a plunger assembly to move the one or more diaphragms to generate fluid pressure.
Claims23
A high frequency chest wall oscillation pump comprising:
- a cylindrical bladder defining a pressure cavity for fluid pressurization to provide pressure oscillation, the bladder arranged for resilient operation between an expanded state in which the pressure cavity has an expanded volume and a compressed state in which the pressure cavity has a compressed volume less than the expanded volume, and
- a squeeze assembly arranged for providing oscillating compression of the bladder between the expanded and compressed states, the squeeze assembly including a drive shaft arranged for rotational drive and at least one cam coupled with the drive shaft to receive rotational drive, and at least one plunger coupled with the at least one cam for radial reciprocating motion to squeeze the bladder from the expanded state to the compressed state to generate fluid pressure.
Dependencies are inferred from the claim text.