发明名称 |
INFUSION DEVICE AND DRIVING MECHANISM AND PROCESS FOR SAME WITH ACTUATOR FOR MULTIPLE INFUSION USES |
摘要 |
A drive mechanism for delivery of infusion medium a coil capable of being electrically activated to provide an electromagnetic field. The coil surrounds a piston channel extending in an axial direction. An armature is located adjacent the coil, on one side of the axial channel. The armature is moveable toward a forward position, in response to the electromagnetic field produced by activation of the coil. A piston is located within the piston channel and is moveable axially within the channel to a forward position, in response to movement of the armature to its forward position. The armature and piston are moved toward a retracted position, when the coil is not energized. The armature may be configured with a reduced diameter by including a coil cup for supporting the coil including a shelf portion defining at least a portion of a pole surface of the coil cup.
|
申请公布号 |
CA2708357(A1) |
申请公布日期 |
2004.07.22 |
申请号 |
CA20032708357 |
申请日期 |
2003.12.03 |
申请人 |
MEDTRONIC MINIMED, INC. |
发明人 |
GRAY, JOHN F.;BOSLEY, ROBERT W;LORENZEN, ERIC |
分类号 |
A61M5/14;F04B17/04;F04B53/10 |
主分类号 |
A61M5/14 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|