Compact patch-type drug infusion device

Abstract

A compact patch-type drug infusion device includes a control structure provided with multiple first fastening portions and first electrical contacts; and an infusion structure including a case, a power supply, multiple three-dimensional circuits, and an elastic conductor, and provided with multiple second electrical contacts and second fastening portions that cooperate with the first fastening portions. The first fastening portions and the second fastening portions are fastened, the first electrical contacts connect with the corresponding second electrical contacts, making the structure more compact and improving the space utilization rate inside the infusion structure.

1 . A compact patch-type drug infusion device, comprising:
 a control structure provided with multiple first fastening portions and first electrical contacts exposed on a surface of the control structure; and   an infusion structure including a case, a power supply, multiple three-dimensional circuits, and an elastic conductor, wherein one end of the elastic conductor is electrically connected to an electrical connection end on the three-dimensional circuit while an other end the elastic conductor is electrically connected to the power supply, and the infusion structure is provided with multiple second electrical contacts exposed on a surface of the case and second fastening portions that cooperate with the first fastening portions, the first fastening portions and the second fastening portions are fastened, the first electrical contacts connect with the corresponding second electrical contacts.   
     
     
         2 . A compact patch-type drug infusion device of  claim 1 , wherein
 the first fastening portions and the second fastening portions include hooks, blocks, holes, or slots that cooperate with each other.   
     
     
         3 . A compact patch-type drug infusion device of  claim 1 , wherein
 one of the first electrical contacts or one of the second electrical contacts is a rigid metal pin or an elastic conductive member.   
     
     
         4 . A compact patch-type drug infusion device of  claim 3 , wherein
 the elastic conductive member includes a conductive spring, a conductive leaf spring, a conductive rubber, or a conductive silica gel.   
     
     
         5 . A compact patch-type drug infusion device of  claim 1 , wherein
 one of the first electrical contacts is a rigid metal pin while one of the second electrical contacts is a conductive spring, a groove, within which a sealing element is provided, is disposed around an area where the second electrical contacts are disposed.   
     
     
         6 . A compact patch-type drug infusion device of  claim 4 , wherein
 the elastic conductor is the conductive leaf spring.   
     
     
         7 . A compact patch-type drug infusion device of  claim 1 , wherein
 the case includes an upper case and a lower case.   
     
     
         8 . A compact patch-type drug infusion device of  claim 1 , wherein
 the power supply includes a double-row battery pack.   
     
     
         9 . A compact patch-type drug infusion device of  claim 1 , wherein
 the power supply includes button batteries.   
     
     
         10 . A compact patch-type drug infusion device of  claim 7 , wherein
 the lower case further includes an outward extending portion, and a block is provided on an outside of the outward extending portion.   
     
     
         11 . A compact patch-type drug infusion device of  claim 10 , wherein
 an outer end of the outward extending portion is provided with a pressing portion.