External device for injecting medicine

Details External device for injecting medicine External device for injecting medicine

1988-09-21

1990-05-01

Pellegrino, Stephen C.

Power plants

604154, 604208, 128DIG12, A61M 520

Patent

active

049214870

ABSTRACT:
A casing holds a syringe that contains a medicine, such as insulin, which may be driven out of the syringe by a plunger into a catheter attached to a human body. The power for the plunger drive mechanism is provided by a spiral spring mounted in the casing. A clockwork movement, regulated by a step electrical motor, controls the speed of the drive mechanism. A microprocessor controls the speed of the step electrical motor which regulates the clockwork movement. All of the components are contained in a casing which has an opening to allow the position of the plunger in the syringe to be seen from outside the casing.

REFERENCES:
patent: 3384080 (1968-05-01), Muller
patent: 3709636 (1973-01-01), Rosenberg
patent: 4059110 (1987-11-01), Wuthrich et al.
patent: 4300554 (1981-11-01), Hessberg et al.
patent: 4634431 (1987-06-01), Whitney et al.
patent: 4652260 (1987-03-01), Fenton, Jr. et al.
patent: 4662872 (1987-05-01), Cane
patent: 4676122 (1987-06-01), Szabo et al.

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