Ophthalmic injection device including dosage control device

摘要

An injection device includes a dispensing chamber, a plunger, a controller, a temperature control device, and a memory device. The dispensing chamber has an inner surface and an outer surface. The inner surface defines a cavity for receiving a quantity of a substance. The plunger is engaged with the inner surface of the dispensing chamber, is capable of sliding in the cavity of the dispensing chamber, and is fluidly sealed to the inner surface of the dispensing chamber. The controller controls the operation of the injection device. The temperature control device at least partially surrounds the dispensing chamber. The memory device has a parameter stored on it. The controller uses the parameter from the memory device to operate the injection device.

主权项

1. An injection device comprising:
a dispensing chamber having an inner surface and an outer surface, the inner surface defining a cavity for receiving a quantity of a substance; a plunger engaged with the inner surface of the dispensing chamber, the plunger capable of sliding in the cavity of the dispensing chamber, the plunger fluidly sealed to the inner surface of the dispensing chamber; a controller for controlling the injection device; a temperature control device at least partially surrounding the dispensing chamber; and a memory device comprising a first fuse and a resistor, the memory device resistant to gamma sterilization techniques that would erase semiconductor memory, a parameter stored on the memory device; wherein the controller uses the parameter from the memory device to operate the injection device.