Administration instrument for medical use

Abstract

An administration instrument includes an injection button which can be pressed at an angle that is not parallel to the needle with respect to a direction in which the needle is inserted into the skin. As a result, it is possible to prevent the force of pressing the injection button from being transmitted in a direction of inserting the needle into the skin deeper than the initial insertion of the needle, thereby achieving an administration under a stable state.

1 . An administration instrument for medical comprising:
 an administration instrument body, and   a drug solution cartridge detachably housed to the administration instrument body, wherein   the drug solution cartridge includes;   a needle attachment portion disposed to an distal end portion of the drug solution cartridge,   an elastic body disposed to a proximal end portion of the drug solution cartridge,   a separator for separating plural drug solutions, or a drug and a drug solution, and   an injection slot disposed between the needle attachment portion and the separator,   the administration instrument body includes a plunger for moving the elastic body to a distal side of the drug solution cartridge,   the administration instrument for medical is configured so that, when the elastic body is pressed by the plunger after the drug solution cartridge is disposed into the administration instrument body, the separator is moved to the distal side of the drug solution cartridge as the elastic body is moved to the distal side of the drug solution cartridge by pressing of the plunger, and thereby the separator is moved up to the injection slot, the plural drug solutions, or the drug and the drug solution in the drug solution cartridge are mixed.   
     
     
         2 . The administration instrument for medical according to  claim 1 , wherein the needle is covered by a cap so that the needle is not exposed. 
     
     
         3 . The administration instrument for medical according to  claim 1 , wherein the administration instrument is configured so that, when the needle is not attached to the drug solution cartridge, the plural drug solutions, or the drug and the drug solution are not mixed. 
     
     
         4 . The administration instrument for medical according to  claim 1 , wherein the administration instrument is configured so that, when the needle is not attached to the drug solution cartridge, housing the drug solution cartridge into the administration instrument body is not able to be completed. 
     
     
         5 . The administration instrument for medical according to  claim 1 , further comprising a retractable lid for covering the drug solution cartridge. 
     
     
         6 . The administration instrument for medical according to  claim 1 , wherein the administration instrument is configured so that, when the elastic body is not able to move to the distal side of the drug solution cartridge, housing the drug solution cartridge into the administration instrument body is completed. 
     
     
         7 . The administration instrument for medical according to  claim 1 , wherein the separator and the elastic body are made of rubber.