Bilateral syringe tethered remote micro-pump
US6610030B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Nov 7, 2000 |
| Grant date | Aug 26, 2003 |
| Priority date | — |
| Expiry date | Sep 17, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/724
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A microinjection pump for administration of fluid pharmacological compounds to unrestrained and freely behaving animals is provided. The micro-pump employs a screw drive mechanism that is actuated by a small stepper motor. The pump moves fluids by direct mechanical displacement from two micro-syringes arranged in parallel. The drive mechanism incorporates a threaded central drive screw that is attached to the stepper motor drive shaft, The threads of the central drive screw engage the threads of two parallel, but oppositely turned (left hand turned and right hand turned) threaded rods. By the frictional action of the helical threads of the threaded drive screw with the threads of the threaded rods the threaded rods are moved linearly and depress the plungers of the attached micro-liter syringes. Medications are administered to animals through flexible tubing. An attached electrical swivel allows power to be delivered to the pump motor while allowing the micro-injector to pivot and move with the animal without binding or twisting the flexible tubing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.