Device for at least one of injection or aspiration
US9592337B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2011 |
| Grant date | Mar 14, 2017 |
| Priority date | — |
| Expiry date | Nov 12, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2210/0612
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Micro-volume devices, systems, and associated methods that facilitate the injection or aspiration of precisely controlled volumes of materials at precisely controlled rates are provided. In one embodiment, a micro-volume device includes a syringe and a lead screw connected to a plunger of the syringe. A mechanical interface is connected to the lead screw and includes a first set of cams adjacent a proximal portion and a second set of cams adjacent a distal portion. A mechanism is configured to oscillate a structure in a direction parallel to a longitudinal axis of the lead screw such that one or more projections of the structure to alternatively engage cams of the first and second sets of cams in a manner that results in rotation of the mechanical interface in a single direction for highly controlled linear displacement of the plunger.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.