Infusion device having a pusher device
US10973977B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2016 |
| Grant date | Apr 13, 2021 |
| Priority date | — |
| Expiry date | Nov 28, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/14573
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An infusion device (3) for administering a medical fluid to a patient, comprises a housing (30) and a receptacle (300) arranged on the housing (30) for receiving a syringe (4), the syringe (4) having a barrel (41) for containing a medical fluid and a plunger (42) movable relative to the barrel (41) for delivering the medical fluid out of the barrel (41). A pusher device (32) is movable relative to the housing (30) for acting onto the plunger (42) for moving the plunger (42) relative to the barrel (41), and a drive mechanism (38) drives the pusher device (32). A coupling mechanism (36, 37) is operative to couple the plunger (42) to the pusher device (32) or to couple the pusher device (32) to the drive mechanism (38), and an actuation mechanism arranged on the pusher device (32) comprises an actuation element (33) for actuating the coupling mechanism (36, 37) between a coupling state and an uncoupling state. Herein, the actuation mechanism comprises a first threaded element (34) rotatable about a rotational axis (342) and a second threaded element (331) movable along the first threaded element (34), the second threaded element (331) being in threaded engagement with the first thread…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.