Accurate, precise microliter dosing syringe
US11707577B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 7, 2017 |
| Grant date | Jul 25, 2023 |
| Priority date | — |
| Expiry date | Nov 16, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3139
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
According to some embodiments, a syringe may include a barrel; a delivery conduit; a plunger seal disposed within the barrel; and a plunger rod assembly affixed to an end of the barrel, the plunger rod assembly including a first plunger rod component comprising a first linear gear, a second plunger rod component disposed at least partially in the barrel and engaged with the plunger seal, wherein the second plunger rod component comprises a second linear gear, a first rotational gear having a plurality of gear teeth for engaging the first linear gear, and a second rotational gear having a second plurality of gear teeth for engaging the second linear gear, wherein the first rotational gear is coupled to the second rotational gear such that translation of the first plunger rod component causes translation of the second plunger rod component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.