Precision low-dose, low-waste syringes and ergonomic attachments therefor
US11654242B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2019 |
| Grant date | May 23, 2023 |
| Priority date | — |
| Expiry date | Nov 4, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3152
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Precision low-dose, low-waste syringe configurations have a reduced diameter lumen for dispensing 0.01 ml increments of contents. Plunger and lumen configurations and a needle interface eliminate dead space. Ergonomic attachments improve the control and precision of delivery of syringes. An attachment main body includes a gripping surface to permit a user to engage the attachment and move the attachment main body, and thus the syringe plunger relative to the syringe barrel using sliding movement. Optical enhancement features are provided on the attachment to improve the readability of gradations and plunger position. The attachment may be provided with an assist feature, which may be a traction wheel mounted on the attachment body. An alternative configuration suitable for syringe contents of higher viscosity may include a pair of toothed pinion gears on a wheel and which cooperate with respective toothed racks formed on or fastened to the syringe body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.