Abstract:
A devise and a method for filling syringes, which allows the filling of a syringe with exact dosage of different drugs, by means of electronic guns or any other suitable device, without the necessity of using a needle.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    A. Field of the Invention 
         [0002]    This invention is related to devices and methods for filling syringes and, more particularly, to a device and a method for filling syringes which allows to fill a syringe with exact dosages of diverse drugs by means of electronic guns or any other suitable device without the necessity of using a needle. 
         [0003]    B. Description of the Related Art 
         [0004]    When it is necessary to apply a mixture of drugs to a patient by means of a syringe, it is normally necessary to introduce the needle of the syringe into the containers of the drugs to be applied. If the needle is not substituted by a new one after the taken out the first drug, the needle already impregnated therewith has to be introduced into the container of the second drug and so on, contaminating said drugs with the drugs of the former container. 
         [0005]    On the other hand, if the taken out of drugs need to be very low or exact, (for example 0.05 ml.), the taken out by means of a syringe is very difficult or impossible. 
         [0006]    In view of the above, applicant developed a devise for filling syringes, comprising a flexible tube which is connected from an end, with a coupling cone of the syringe and from another end, with an electronic gun for filling syringes with exact dosage, and which is disconnected from said electronic gun to connect a standard needle for the application of the fluid to a patient. 
         [0007]    The method in accordance with the present invention comprising: connecting an end of a flexible tube, to a gun for filling syringes and an opposed end, to a coupling cone of the syringe which is going to be filled; filling the syringe with an exact dosage of drug; disconnecting the flexible tube from the gun for filling syringes, once the syringe has been filled with the exact dosage; and connecting in said opposed end, a standard needle for the application of the drug. 
         [0008]    By means of the device and method of the present invention, it is possible to fill a syringe with multiple drugs without contaminate the drug containers, since the filling of the syringe is carried out by means of a gun for filling syringes. 
         [0009]    Also, it is possible applying a drug cocktail requiring multiple punctures since it is possible to substitute the needle many times as be necessary. 
         [0010]    Additionally, by means of the device of the present invention, it is possible to apply micro-foam with different needle caliber, since for the application of micro-foam it is basic that the syringe be so disposed in a vertical position in order that the micro-foam migrate to an upper end thereof and can be introduced to the device for the application. This type of treating is impossible to be applied with a conventional syringe and a needle connected thereto, since on carry out the puncturing with the syringe in a vertical way, the micro-foam migrates upstream and it will be introducing liquid instead of micro-foam 
       SUMMARY OF THE INVENTION 
       [0011]    It is therefore a main object of the present invention, to provide a device and a method for filling syringes, which allows filling syringes with exact dosage of different drugs by means of an electronic gun or any other suitable device without the necessity of using a needle. 
         [0012]    It is another main object of the present invention, to provide a device and a method for filling syringes, of the above described nature, by means of which it is possible to fill syringes with multiple drugs, without contaminating the drug containers, since the filling of the syringe is carried out by means of a gun for filling syringes. 
         [0013]    It is an additional main object of the present invention, to provide a device and a method for filling syringes, of the above described nature, by means of which it is possible to apply a cocktail of drugs which require multiple puncturing, since it is possible to substitute the needle many times as be necessary. 
         [0014]    It is also an additional object of the present invention, to provide a device and a method for filling syringes, of the above described nature, by means of which it is possible to apply micro-foam, with different caliber of needles. 
         [0015]    These and other objects and advantages of the present invention will be apparent to those persons having usual skilled in the field, from the following detailed description of the invention. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0016]      FIG. 1 , is a perspective view of the device for filling syringes, of the present invention, connected to an electronic gun for filling syringes. 
           [0017]      FIG. 2 , is a perspective view of the device for filling syringes, of the present invention, having a needle connected for the application of a drug. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0018]    The invention will now be described making reference to a preferred embodiment of the invention and to the accompanying drawings. The syringe wherein the device of the present invention can be used, typically comprising a cylinder having a first end opened, a coupling cone C for a needle at a second end, and a moving plunger into the cylinder, to push a liquid, wherein the device for filling syringes, of the present invention, comprising: 
         [0019]    a conduit  1  made of a flexible material, preferably of plastic, which has a first and a second ends. In a preferred embodiment, the conduit is made of flexible PVC plastic having a length of 100 mm, a width of 1.0 mm and an inner volume of 20 ml.; 
         [0020]    means for connecting the conduit to the coupling cone C of the syringe, joined to the first end of the conduit  1 , comprising a tube of natural or synthetic rubber  2  which is hermetically coupled with said coupling cone C. In a preferred embodiment said means for connecting the conduit with the coupling cone C are made of poly-isoprene and are joined to the conduit by means of a cyclohexanone solvent; and 
         [0021]    means for connecting the conduit to a gun  3  for filling syringes ( FIG. 1 ) or with a needle  4  ( FIG. 2 ), comprising a coupling cone  5  of a standard syringe, which in a preferred embodiment is hermetically connected with the conduit, by means of a cyclohexanone solvent. 
         [0022]    In order to fill the syringe with an exact dosage of one or several drugs, one have to follow the following steps: 
         [0023]    connecting the device to the coupling cone C of the syringe, by means of the conduit  1 ;
       a) connecting the device to the connector of the filling gun  3  by means of the coupling cone  5 ;   b) activating the filling gun  3  for filling the syringe with exact dosage of drugs;   c) disconnecting the device from the filling gun  3 ;   d) repeating the steps b) and c) to fill the syringe with exact dosage of other drugs;   e) once that the syringe is filled with the desired drug or drugs, connecting a needle  4  to the coupling cone  5  of the device;   f) applying the desired drug or drugs to the patient by means of a needle.       
 
         [0030]    Some treatments require multiple punctures with different types of needles, so, thanks to the device of the present invention it is possible to place different types of needle, to apply the dug or drugs. 
         [0031]    For creating and applying micro-foam, it should firstly fill the device with the necessary drug or drugs in accordance with steps a) to e) and later the plunger has to be pulled to create a vacuum space. When the plunger is released, the drug is stirred creating little concentration of foams. Once that the micro-foam has been created one can proceed to the placing of the dental needle for its application to little varicose veins. 
         [0032]    It should be understand that the device and method for filling syringes, of the present invention it is not limited to the embodiment formerly described and that the persons skilled in the field shall be able, because of the teaching which are here established, to make changes in the device and method for filling syringes of the present invention, which scope shall be exclusively established by the following claims.