Method of preparation of batch of physiologic solution
First Claim
1. A method for preparing a batch of a dialysis solution from batch quantities of first and second chemical formulations stored in respective first and second batch quantity chemical vessels, comprising the steps of:
- opening said first batch quantity vessel and placing said first chemical formulation in a solution preparation tank;
removing said first chemical formulation from said solution preparation tank;
opening said second batch quantity vessel, placing said second chemical formulation into said solution preparation tank and diluting said second chemical formulation with water, while maintaining said first chemical formulation sequestered from said second chemical formulation; and
mixing said dilute solution of said second chemical formulation with said first chemical formulation to form said dialysis solution and storing the said dialysis solution in said dialysate solution tank.
6 Assignments
0 Petitions
Accused Products
Abstract
A batch of dialysate solution is made from a mixture of bicarbonate formulation and a liquid acid formulation. The liquid acid formulation is introduced into a dialysate tank and then removed from the tank and stored elsewhere, such as in an ultrafiltration tank, where it is diluted with a few litres of water. The dialysate tank is then filled with water and the bicarbonate formulation is added to the dialysate tank. The bicarbonate formulation is mixed and dissolved by circulation in a closed loop, with the liquid acid formulation kept separate. When the bicarbonate solution has been prepared, the liquid acid solution and the bicarbonate solution are mixed together and stored in the dialysate preparation tank. An additional quantity of dilution water is introduced into the dialysate system to bring the final conductivity down to the desired range. The excess dialysate solution can be used for several purposes, such as an endotoxin flush of the blood tubing set or a dialyzer clearance test.
-
Citations
15 Claims
-
1. A method for preparing a batch of a dialysis solution from batch quantities of first and second chemical formulations stored in respective first and second batch quantity chemical vessels, comprising the steps of:
-
opening said first batch quantity vessel and placing said first chemical formulation in a solution preparation tank; removing said first chemical formulation from said solution preparation tank; opening said second batch quantity vessel, placing said second chemical formulation into said solution preparation tank and diluting said second chemical formulation with water, while maintaining said first chemical formulation sequestered from said second chemical formulation; and mixing said dilute solution of said second chemical formulation with said first chemical formulation to form said dialysis solution and storing the said dialysis solution in said dialysate solution tank. - View Dependent Claims (2, 3, 4, 5, 7, 8, 15)
-
-
6. A method for preparing a batch of a physiologic solution for use during a surgical procedure from batch quantities of first and second chemical formulations stored in respective first and second batch quantity chemical vessels, comprising the steps of:
-
opening said first batch quantity vessel and placing said first chemical formulation in a solution preparation tank; removing said first chemical formulation from said solution preparation tank; opening said second batch quantity vessel, placing said second chemical formulation into said solution preparation tank and diluting said second chemical formulation with water, while maintaining said first chemical formulation sequestered from said second chemical formulation; and mixing said dilute solution of said second chemical formulation with said first chemical formulation to form a physiologic solution and storing the said physiologic solution in said dialysate solution tank.
-
-
9. A method for preparation of a batch of dialysate solution from batch quantities of liquid acid and bicarbonate chemical formulations stored in respective first and second batch quantity chemical vessels, comprising the steps of:
-
opening said first batch quantity vessel and placing said liquid acid chemical formulation in a solution preparation tank; maintaining said bicarbonate chemical formulation separate from said solution preparation tank; removing said liquid acid chemical formulation from said solution preparation tank and storing said solution in an ultrafiltration tank; diluting said liquid acid formulation with water to form a dilute acid solution in said ultrafiltration tank; while storing said dilute acid solution in said ultrafiltration tank, opening said second batch quantity vessel, placing said bicarbonate chemical formulation into said solution preparation tank and diluting said bicarbonate chemical formulation with water to form a dilute bicarbonate solution therein; and mixing said dilute bicarbonate and dilute acid solutions together within said dialysate preparation tank to form a physiologic solution and storing said physiologic solution in said dialysate solution tank. - View Dependent Claims (10, 11, 12, 13, 14)
-
Specification