Medicinal-liquid Administering device

A portable medicinal-liquid administering device for administering a medicinal liquid from a medicinal liquid container into a living body, the medicinal-liquid administering device comprising:

• a reusable part comprising:
• a driving source configured to provide a driving force for pressing a pressing member toward the medicinal liquid to administer the medicinal liquid,
• a reusable-side power transmission part to which the driving force from the driving source is transmitted,
• a housing that houses the reusable-side power transmission part, the housing having an opening part configured such that the reusable-side power transmission part is partially exposed from the housing,
• an openable and closable cover part located at the opening part of the housing, and
• a pushing member configured to push the cover part into a closed state;
• and
• a disposable part that is attachable to and detachable from the reusable part, the disposable part comprising:
• the medicinal liquid container,
• the pressing member,
• a disposable-side power transmission part configured to engage with the reusable-side power transmission part upon attachment of the reusable part to the disposable part, and to transmit to the pressing member the driving force transmitted from the driving source to the reusable-side power transmission part, and
• a contact part configured to contact the cover part;
• wherein, when the disposable part is attached to the reusable part, the contact part contacts the cover part so as to cause the cover part to be opened and maintained in an opened state while resisting pushing force of the pushing member;
• and
• wherein, when the disposable part is detached from the reusable part, the cover part is closed by the pushing force of the pushing member so as to block the opening part.