A manually operated medicament infusion device is provided. The device is capable of delivering an accurately controlled volume of medicament with reliability. Additionally, the device includes a battery-operated indication device for tracking the number of doses of medication delivered. Optionally, the device includes a ratchet and pawl to prevent inadvertent dispensing of medicament.提供一種手動操作之藥物注射裝置。該裝置能可靠地投送一準確控制的藥物量。此外,該裝置包括一電池組操作指示裝置,以用於追蹤所投送之藥物劑量的數目。可選地,該裝置包括一棘輪及爪片以防止無意間施配藥物。