Bilateral microinjector pump for freely moving animals in an operant chamber
US6475188B1 · kind B1 · utility
Inventor
Key dates
| Filing date | May 18, 2000 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | May 18, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2250/00
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A microinjection pump for unrestrained and freely behaving animals is provided. The microinjection pump employs a screw drive mechanism that is actuated by an attached small stepper motor. The pump moves fluid by direct mechanical displacement from two microsyringes arranged in parallel (see FIGS. 1 and 2). The pump pivots and turns freely above an animal cage by an electrical swivel and connects to the animal head only by two small flexible capillary tubes that store and deliver fluids to both sides of its brain. Through associated electronic connections, the pump allows the animal to lever press for self-administration of fluids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.