Apparatus and method for metered dispensing of a microfluidic amount of fluid in the picoliter and microliter range and hand-held device for locally piercing human or animal skin
US11662749B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 18, 2020 |
| Grant date | May 30, 2023 |
| Priority date | — |
| Expiry date | Dec 16, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01L2400/0661
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Metered dispensing of a microfluidic amount of fluid from a reservoir comprises a pressure device which applies a discharge pressure for fluid ejection via a discharge line through a valve arrangement. The valve device has a first valve with a minimum closing time and a second valve with a minimum opening time. A control device provides control signals for operation for metered dispensing of the amount of fluid as follows: a shortened minimum opening time for freeing the discharge line for the fluid flow, which time is shorter than the minimum opening time of the second valve; and a shortened minimum closing time for closing the discharge line for the fluid flow, which time is shorter than the minimum closing time of the first valve. Furthermore, a hand-held device for locally piercing human or animal skin is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.