System for preparing a fluid intended for a medical procedure by mixing at least one concentrate in powder form with water

A system for preparing a fluid for a medical procedure by mixing of at least one concentrate in powder form with water, said system comprising:

• a source of water;
• a vessel for containing a concentrate in powder form;
• first fluid conducting means having a first end communicating with said source of water for withdrawing water from said source of water, and a second end for delivering a prepared fluid;
• second fluid conducting means communicating with said source of water and with an inlet of said vessel for introducing water withdrawn from said source of water into said vessel to produce a first concentrate fluid containing dissolved powder concentrate in water;
• third fluid conducting means communicating with an outlet of said vessel and with a first mixing point in said first fluid conducting means intermediate said first and second ends for conducting said first concentrate fluid from said vessel into said first fluid conducting means to be mixed with fluid being conducted through said first fluid conducting means;
• a source of second concentrate fluid;
• fourth fluid conducting means having a first end communicating with said source of second concentrate fluid and a second end communicating with said first fluid conducting means at a second mixing point intermediate said first and second ends of said first fluid conducting means for introducing into said first fluid conducting means said second concentrate fluid to be mixed with fluid being conducted through said first fluid conducting means, to thereby produce a prepared solution in said first fluid conducting means downstream of said first and second mixing points for delivery to said second end of said first fluid conducting means, said prepared solution being comprised of said first concentrate fluid and said second concentrate fluid mixed with water withdrawn from said source of water through said first fluid conducting means.

A system for preparing a fluid for a medical procedure by mixing of at least two concentrates in powder form with water, said system comprising:

• a source of water;
• a first vessel for containing a first concentrate in powder form;
• a second vessel for containing a second concentrate in powder form, said second concentrate being different from said first concentrate;
• first fluid conducting means having a first end communicating with said source of water for withdrawing water from said source of water, and a second end for delivering a prepared solution;
• a concentrate fluid circuit communicating with said source of water and with said first fluid conducting means intermediate said first and second ends of said first fluid conducting means for conducting fluid containing water from said source of water through said concentrate fluid circuit and into said first fluid conducting means upstream of said second end of said first fluid conducting means to be mixed with fluid being conducted throough said first fluid conducting means to thereby produce a prepared solution for delivery to said second end of said first fluid conducting means, said prepared solution being comprised of fluid from said concentrate fluid circuit mixed with water withdrawn from said source of water;
• and
• said concentrate fluid circuit including first connection means at a first location in said concentrate fluid circuit for connecting said first vessel to said concentrate fluid circuit so as to introduce fluid containing water from said source of water into said first vessel to dissolve said first concentrate and to withdraw fluid containing said dissolved first concentrate from said first vessel, and second connection means at a second location in said concentrate fluid circuit for connecting said second vessel to said concentrate fluid circuit so as to introduce fluid containing water from said source of water into said second vessel to dissolve said second concentrate and to withdraw fluid containing said dissolved second concentrate from said second vessel, said first and second connection means being different from one another so that said first vessel is only connectable to said concentrate fluid circuit at said first location by said first connection means and said second vessel is only connectable to said concentrate fluid circuit at said second location by said second connection means.

A system for preparing a fluid for a medical procedure by mixing of at least one concentrate in powder form with water, said system comprising:

• a source of water;
• a vessel for containing a concentrate in powder form, said vessel including an inlet at the top thereof and an outlet at the bottom thereof;
• first fluid conducting means having a first end communicating with said source of water for withdrawing water from said source of water, and a second end for delivering a prepared solution;
• second fluid conducting means communicating with said source of water and with said inlet of said vessel for introducing water from said source of water into the top of said vessel to produce a concentrate fluid containing dissolved powder concentrate in water;
• and
• third fluid conducting means communicating with said outlet of said vessel and with a mixing point in said first fluid conducting means intermediate said first and second ends for conducting said concentrate fluid from the bottom of said vessel into said first fluid conducting means to be mixed with fluid being conducted through said first fluid conducting means to thereby produce a prepared solution in said first fluid conducting means for delivery to said second end of said first fluid conducting means, whereby water is conducted through said vessel from the top thereof to the bottom thereof to thereby maintain a relatively constant concentration level of dissolved powder concentrate in said third fluid conducting means.

A system for preparing a fluid for a medical procedure by mixing of at least one concentrate in powder form with water, said system comprising:

• a vessel for containing a concentrate in powder form;
• first fluid conducting means having a first end for communicating with a source of water to withdraw water into said first fluid conducting means and a second end for delivering a prepared solution;
• second fluid conducting means having a first end for communicating with a source of water and a second end communicating with an inlet of said vessel for introducing water into said vessel to produce a concentrate fluid concentrate dissolved powder concentrate in water;
• third fluid conducting means communicating with an outlet of said vessel and with a mixing point in said first fluid conducting means intermediate said first and second ends for conducting said concentrate fluid form said vessel into said first fluid conducting means to be mixed with fluid being conducted through said first fluid conducting means to thereby produce a prepared solution in said first fluid conducting means for delivery to said second end of said first fluid conducting means;
• measuring means in said first fluid conducting means downstream of said mixing point for measuring the composition of the prepared solution obtained by mixing of said concentrate fluid and water in said first fluid conducting means;
• and
• flow regulating means in said third fluid conducting means responsive to said measuring means for controlling the flow of said concentrate fluid from said vessel.