Apparatus for manufacturing sterilized saline solution

Abstract

The present invention relates to a manufacturing method of medical sterilized normal saline, more specifically, to such a method for manufacturing sterilized normal saline for medical purpose with effective sterilizing efficacy comprising: a step of disposing at least one electrode set immersed in saline solution of pH 4.0 to pH 7.5 including a pair of electrodes with flat surface separated from each other by an interval between 1 mm and 3 mm, the flat surfaces of the electrodes facing each other; and a step of supplying 30 mA to 200 mA direct current to the electrodes by applying 2.4V to 3.3V DC power to the electrodes; wherein free chlorine is reliably and stably generated as having concentration range between 0.17 ppm and 6 ppm from electrolysis between electrodes.

Having described the invention, the following is claimed: 
     
         1 . An apparatus for manufacturing sterilized saline comprising:
 at least one electrode unit having at least one negative electrode submerged in the saline solution, and at least one positive electrode facing the negative electrode at an interval;   a DC supply unit of supplying DC current to the electrode unit; and   a current compensating means of compensating difference of DC current supplied to the electrode unit.   
     
     
         2 . The apparatus for manufacturing sterilized saline claimed in  claim 1 , wherein the current compensating means includes two pairs of transistors TR 1 , TR 2 , TR 3 , TR 4  as a switch element being connected in parallel with each other, the electrodes being placed between points which are located between the each pair of the transistors,
 wherein the transistors TR 1 , TR 4  diagonally facing each other with respect to the points are controlled to be changed together to ON/OFF, and the other transistors TR 2 , TR 3  diagonally facing each other with respect to the points are controlled to be changed together to OFF/ON which is reverse from the transistor TR 1 , TR 4 , and 
 wherein the pulse width of the base current of the transistors is controlled to be changed in accordance with the DC applied to the electrodes thereby constantly maintaining DC current between the electrodes. 
 
     
     
         3 . The apparatus for manufacturing sterilized saline claimed in  claim 1 , wherein the electrode unit includes a pair of negative electrode and positive electrode, the pair of electrodes having a plurality of domains separated from one another on the facing surface of each electrode. 
     
     
         4 . The apparatus for manufacturing sterilized saline claimed in  claim 3 , wherein the area of the plurality of domains of each of the electrodes covers 4% to 25% of the total area of the facing surface of each electrode. 
     
     
         5 . The apparatus for manufacturing sterilized saline claimed in  claim 3 , wherein the electrode unit comprises:
 a plate-shaped positive electrode having a plurality of positive rods divided by a plurality of positive slots in one direction which are parallel with one another; and   a plate-shaped negative electrode having a plurality of negative rods divided by a plurality of negative slots in one direction which are parallel with one another,   wherein the plurality of domains are formed by the area overlapped in the perpendicular direction to the surface of the electrodes when the positive electrode and the negative electrode are disposed in parallel so that the positive rods are not disposed to be parallel with the negative rods.   
     
     
         6 . The apparatus for manufacturing sterilized saline claimed in  claim 5 , wherein the positive rods and the negative rods are disposed at right angle to each other. 
     
     
         7 . The apparatus for manufacturing sterilized saline claimed in  claim 5 , wherein the width of the positive rods is narrower than the width of the positive rods, and the width of the negative rods is narrower than the width of the negative slots. 
     
     
         8 . The apparatus for manufacturing sterilized saline claimed in  claim 3 , wherein the electrode unit comprises:
 a plurality of positive projections formed protrudedly on the positive electrodes; and   a plurality of negative projections formed protrudedly on the facing surface of the negative electrodes;   wherein the plurality of domains are formed by an area of the end surface of the positive projections and the negative projections facing each other.   
     
     
         9 . The apparatus for manufacturing sterilized saline claimed in  claim 1 , wherein the DC supply unit includes a battery. 
     
     
         10 . The apparatus for manufacturing sterilized saline claimed in  claim 1 , wherein the apparatus is portable. 
     
     
         11 . The apparatus for manufacturing sterilized saline claimed in  claim 1 , wherein the saline solution is normal saline. 
     
     
         12 . The apparatus for manufacturing sterilized saline claimed in  claim 1 , wherein the saline solution is made by mixing water and salt; 
     
     
         13 . The apparatus for manufacturing sterilized saline claimed in  claim 1 , wherein the saline solution is subacid to neutral pH level. 
     
     
         14 . The apparatus for manufacturing sterilized saline claimed in  claim 1 , wherein the direction of the DC is reversed at least one time during the electrolysis. 
     
     
         15 . The apparatus for manufacturing sterilized saline claimed in  claim 12 , wherein the direction of the DC is reversed every one second to every 20 seconds.