Infusion device with a grooved piston channel wall
US8939737B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 9, 2013 |
| Grant date | Jan 27, 2015 |
| Priority date | — |
| Expiry date | Dec 9, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B17/048
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for delivering a fluid includes a housing, an inlet in the housing for receiving the fluid, and an outlet in the housing for discharging the fluid. A piston channel is provided within the housing through which the fluid flows from the inlet to the outlet. An actuator is positioned within the housing and is moveable between a retracted position and a forward position, the actuator defining a piston chamber for storing fluid received through the inlet when the actuator is in the retracted position and for driving the fluid stored in the piston chamber toward the outlet when the actuator transitions from the retracted position to the forward position. The actuator includes an armature and a piston coupled to the armature and moveable within the piston channel. The piston channel wall is provided with a groove for conducting fluid from the inlet to the outlet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.