Apparatus and system for the self-dosing of a liquid medicine

Details Apparatus and system for the self-dosing of a liquid medicine Apparatus and system for the self-dosing of a liquid medicine

A - Human Necessities

61

J

A61J 7/00 (2006.01) A61M 5/142 (2006.01) G01F 19/00 (2006.01) A61M 5/14 (2006.01)

Patent

CA 2072787

ABSTRACT OF THE DISCLOSURE An apparatus comprises a device or reservoir which consists of a chamber formed in a casing for receiving a liquid medicine to be self-dosed by a patient, with an inlet and outlet ports formed to communicate with the chamber free from leakage of the medicine. The device further comprises a piston fitted liquid-tightly in the chamber, a push button attached to and actuating the piston and capable of being pressed by the patient a desired number of times corresponding to an amount of dosed liquid medi- cine, and a spring urging the piston towards its home position. With the patient's hand being removed from the button, the spring forces the piston backwards to its home position and a resulting negative pressure causes a subsequent smooth refilling of the chamber. The apparatus of such a simple structure manufactured at a lower cost can be employed in an integrated system for the self-dosing of the liquid medicine.

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