Patch-type drug infusion device

Abstract

A 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, provided with multiple second electrical contacts and second fastening portions that cooperate with the first fastening portions, an outward extending portion provided on the case, and a block provided on the outside of the outward extending portion. The first fastening portions and the second fastening portions are fastened, making the control structure and the infusion structure assembled together, the first electrical contacts connect with the corresponding second electrical contacts. The block can prevent the control structure from detaching from the infusion structure.

1 . A 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, provided with multiple second electrical contacts exposed on a surface of the case and second fastening portions that cooperate with the first fastening portions, an outward extending portion provided on the case, and a block, used for blocking the control structure, wherein the block is provided on an outside of the outward extending portion, the first fastening portions and the second fastening portions are fastened, making the control structure and the infusion structure assembled together, the first electrical contacts connect with the corresponding second electrical contacts.   
     
     
         2 . A 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 patch-type drug infusion device of  claim 1 , wherein
 an outer end of the outward extending portion is provided with a pressing portion.   
     
     
         4 . A patch-type drug infusion device of  claim 1 , wherein
 the case includes an upper case and a lower case.   
     
     
         5 . A patch-type drug infusion device of  claim 4 , wherein
 the outward extending portion is disposed on the lower case.   
     
     
         6 . A patch-type drug infusion device of  claim 4 ,
 further comprising an unlocking hole disposed on the lower case and set in an inner side of the block.   
     
     
         7 . A patch-type drug infusion device of  claim 6 , wherein
 the infusion structure is further provided with at least one crease groove which is disposed on a side of the unlocking hole.   
     
     
         8 . A patch-type drug infusion device of  claim 7 , wherein
 the at least one crease groove comprises two crease grooves, the two crease grooves are provided at two ends of the block, respectively.   
     
     
         9 . A 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.   
     
     
         10 . A patch-type drug infusion device of  claim 9 , wherein
 the elastic conductive member includes a conductive spring, a conductive leaf spring, a conductive rubber, or a conductive silica gel.   
     
     
         11 . A 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.