External device for injecting medicine
US4921487A · kind A · utility
36Cited by
8References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1988 |
| Grant date | May 1, 1990 |
| Priority date | — |
| Expiry date | Sep 21, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/12
- WIPO fieldMedical technology
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.