Portable hand pump for evacuation of fluids
AssigneeThe Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc.
InventorsHasan B. Alam, Peter Rhee, Emily Rhee
Life of this patent
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Abstract
A manually operable pump for the effective removal of fluids to include blood, blood clots, fluid, and air from a body cavity of a subject is provided. The manually operable pump is adapted to be connect to a range of fluid conduits and is equipped with one-way valves that effectively permit flow of fluid through the pump in only one direction. The sensitivity of the one-way valves is such that when properly positioned, fluid can flow through the valves and out of the pump without manual compression of the pump and with the aid of gravity power alone.
Claims21
1-18. (canceled)
A manually operable pump for removing fluids from a body cavity of a subject, the pump comprising:
- a fluid-tight pump body having a first end and a second end with a compressible center portion disposed between the first end and second end;
- an inflow connector attached to the first end, the inflow connector adaptable for connection to an inflow conduit;
- an inflow one-way valve disposed between the inflow connector and the pump body, the inflow one-way valve adapted to permit flow of fluid from the inflow conduit through the inflow connector and into the pump body but restricting backflow of fluid from the pump body into the inflow connector and inflow conduit;
- and
- wherein the inflow one-way valve allows fluid passage through the inflow valve when the pump is so positioned such that all power for fluid flow is provided by gravity alone.
A system for removing fluids from a body cavity, comprising:
- a fluid receptacle for receiving the fluids from the body cavity;
- a manually operable pump in fluid communication with both the body cavity and the fluid receptacle;
- an inflow connector adaptable for connecting the pump to an inflow conduit;
- and
- an inflow one-way valve disposed between the inflow connector and the pump, operation of the pump generating a negative pressure relative to the body cavity to transfer fluid from the body cavity to the fluid receptacle;
- wherein the pump is so positioned such that all power for fluid flow is provided by gravity.
A method of removing fluid during a medical procedure, comprising:
- attaching a manually operable pump to a proximal end of an inflow conduit, the manually operable pump in fluid communication with a fluid receptacle;
- generating a negative pressure via the manually operable pump to initiate fluid flow from the inflow conduit toward the fluid receptacle;
- and
- positioning the manually operable pump to flow fluid from the inflow conduit to the fluid receptacle such that all power for further fluid flow is provided by gravity.
Dependencies are inferred from the claim text.