The ornamental design for a medicineinjector, as shown and described.
1. Medicine injector
1.1 : Perspective
1.2 : Front
1.3 : Back
1.4 : Left
1.5 : Right
1.6 : Top
1.7 : Bottom
The broken lines depict portions of the medicine injector that form no part of the claim. The dot-dash line in reproduction 1.5 represents boundaries of the claim and forms no part of the claim.