Portable hand pump for evacuation of fluids
First Claim
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1. 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, the inflow conduit comprising a pleural evacuation tube for removing fluid from a plural space;
an outflow connector attached to the second end, the outflow connector adaptable for connection to an outflow 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
an outflow one-way valve disposed between the pump body and the outflow connector, the outflow one-way valve adapted to permit flow of fluid from the pump body into the outflow connector and into the outflow conduit but restricting backflow of fluid from the outflow conduit and outflow connector into the pump body,wherein the inflow one-way valve and the outflow one-way valve allow fluid passage through the inflow and outflow valves when the pump is so positioned such that all power for fluid flow is provided by gravity alone.
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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.
604 Citations
20 Claims
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1. A manually operable pump for removing fluids from a body cavity of a subject, the pump comprising:
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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, the inflow conduit comprising a pleural evacuation tube for removing fluid from a plural space; an outflow connector attached to the second end, the outflow connector adaptable for connection to an outflow 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 an outflow one-way valve disposed between the pump body and the outflow connector, the outflow one-way valve adapted to permit flow of fluid from the pump body into the outflow connector and into the outflow conduit but restricting backflow of fluid from the outflow conduit and outflow connector into the pump body, wherein the inflow one-way valve and the outflow one-way valve allow fluid passage through the inflow and outflow valves when the pump is so positioned such that all power for fluid flow is provided by gravity alone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A manually operable pump for removing fluids from a body cavity of a subject, comprising:
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a pump body comprising a compressible portion extending between a first end and a second end of the pump body, the first end of the pump body in fluid communication with the second end of the pump body; a first one-way valve in fluid communication with the first end of the pump body to provide unidirectional fluid flow into the pump body; an inflow conduit coupled to the first one-way valve and comprising a pleural evacuation tube for removing fluid from a plural space, and a second one-way valve in fluid communication with the second end of the pump body to provide unidirectional fluid flow out of the pump body; wherein the first one-way valve and the second one-way valve allow fluid passage through the pump body when the pump body is so positioned such that all power for fluid flow is provided by gravity.
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12. A system for removing fluids from a body cavity, comprising:
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a fluid receptacle for receiving the fluids from the body cavity; and a manually operable pump in fluid communication with both the body cavity and the fluid receptacle via an inflow conduit comprising a pleural evacuation tube for removing fluid from a plural space in the body cavity, 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. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method of removing fluid during a medical procedure, comprising:
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attaching a manually operable pump to a proximal end of a catheter, the manually operable pump in fluid communication with a fluid receptacle via an inflow conduit for removing fluid; generating a negative pressure via the manually operable pump to initiate fluid flow from the catheter toward the fluid receptacle; and positioning the manually operable pump to flow fluid from the catheter to the fluid receptacle such that all power for further fluid flow is provided by gravity. - View Dependent Claims (19, 20)
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Specification