Joystick for an ophthalmic instrument where vertical movement is controlled by rotating the joystick
US5471260A · kind A · utility
32Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1994 |
| Grant date | Nov 28, 1995 |
| Priority date | — |
| Expiry date | Oct 28, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/0075
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The disclosure relates to a joystick for positioning a test axis of an ophthalmic instrument relative to an eye of a patient. In a preferred embodiment, the joystick includes an actuator extending therefrom and arranged to alternately engage a pair of motor control switches incident to slight rotation of the joystick in opposite directions, thereby activating a motor drive to raise and lower the test axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.