Dialysis solution system and mixing tank
First Claim
1. A mixing tank apparatus for mixing dry chemicals with water to form a concentrated hemodialysis solution, comprising:
- a. a mixing chamber having a generally vertical sidewall extending upward from a bottom wall and circumscribing at least a portion of a cylinder to form a main well, the mixing chamber also having a cavity extending generally horizontally and projecting outward from the vertical sidewall;
b. a drain connection located at a lowermost portion of the bottom wall; and
c. a fluid supply nozzle projecting into the mixing chamber and directed at least partially toward the cavity wherein fluid is drawn from the mixing chamber by the drain connection and is returned to the mixing chamber by the fluid supply nozzle and the combination of the drain connection and fluid nozzle create a first rotational pattern and a second rotational pattern in the fluid, with the first pattern having a generally vertically-oriented vortex and the second pattern having a horizontally-oriented vortex in the mixing chamber to accelerate dissolving of the dry chemicals.
5 Assignments
0 Petitions
Accused Products
Abstract
A low-profile tank and system for mixing dry chemicals with water to form a concentrated hemodialysis solution, the tank having a fluid supply nozzle projecting into a cylindrical side wall of the tank, and a drain connection at an apex of a conical bottom wall of the tank. A cavity having a ramp-like bottom wall extends from the cylindrical side wall of the tank. A venturi eductor provides for transfer of dry chemicals to the tank using compressed air to aspirate the chemicals and deliver them to the tank. A plurality of load cells may be used to measure the weight of the tank and contents. Manual transfer of dry chemicals to the tank is facilitated by the low profile of the tank. A tapered shipping container is provided for nesting when empty.
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Citations
41 Claims
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1. A mixing tank apparatus for mixing dry chemicals with water to form a concentrated hemodialysis solution, comprising:
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a. a mixing chamber having a generally vertical sidewall extending upward from a bottom wall and circumscribing at least a portion of a cylinder to form a main well, the mixing chamber also having a cavity extending generally horizontally and projecting outward from the vertical sidewall;
b. a drain connection located at a lowermost portion of the bottom wall; and
c. a fluid supply nozzle projecting into the mixing chamber and directed at least partially toward the cavity wherein fluid is drawn from the mixing chamber by the drain connection and is returned to the mixing chamber by the fluid supply nozzle and the combination of the drain connection and fluid nozzle create a first rotational pattern and a second rotational pattern in the fluid, with the first pattern having a generally vertically-oriented vortex and the second pattern having a horizontally-oriented vortex in the mixing chamber to accelerate dissolving of the dry chemicals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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14. A mixing tank apparatus for mixing dry chemicals with water to form a concentrated hemodialysis solution, comprising:
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a. a mixing chamber having a cylinder sidewall extending up from a bottom wall;
b. a drain connection located at a lowermost portion of the bottom wall; and
c. a fluid supply nozzle projecting into the cylinder sidewall and having a fluid outlet directed at a horizontal angle away from a diameter of the cylinder sidewall and further directed at a vertical angle downward from a horizontal direction wherein fluid is drawn from the tank by the drain connection and is returned to the tank by the fluid supply nozzle creating a rapid flow of the fluid having an axis of rotation eccentric to the cylinder sidewall and angled from vertical. - View Dependent Claims (15, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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16. The apparatus of clam 14 wherein the cylinder sidewall is a circular cylinder.
Specification