A fluid reservoir for containing a treatment fluid and a transdermal access tool fluidly coupled to the fluid reservoir, the transdermal access tool comprising an infusion device configured to deliver the treatment fluid subcutaneously to a patient The device operates in a standby mode prior to the therapeutic fluid being introduced into the fluid reservoir, and the infusion device places the percutaneous access tool in place when the fluid reservoir is filled with the therapeutic fluid to a predetermined fill level. A medical device that operates to be placed within a period of time. [Selection] Figure 1治療液を入れるための流体リザーバ及び流体リザーバに流体連結された経皮アクセスツールを含み、経皮アクセスツールが、治療液を患者に皮下送達するように構成されている、注入装置を含み、注入装置は、治療液が流体リザーバに導入されるのに先立って待機モードで動作し、注入装置は、流体リザーバが治療液で所定の充填レベルまで充填されると、経皮アクセスツールを所定の配置期間内に配置するように動作する、医療機器。【選択図】図1