发明申请
- 专利标题: Medication dispensing apparatus with triple screw threads for mechanical advantage
- 专利标题(中): 具有三螺纹的药物分配装置,用于机械优点
-
申请号: US10567196申请日: 2004-08-09
-
公开(公告)号: US20060206057A1公开(公告)日: 2006-09-14
- 发明人: Otto DeRuntz , Kenneth Focht , Alexander Jacobs , Elizabeth Johansen , Jared Judson
- 申请人: Otto DeRuntz , Kenneth Focht , Alexander Jacobs , Elizabeth Johansen , Jared Judson
- 申请人地址: US IN Indianapolis 46206-6288
- 专利权人: Eli Lily and Company Patent Division
- 当前专利权人: Eli Lily and Company Patent Division
- 当前专利权人地址: US IN Indianapolis 46206-6288
- 优先权: US60494499 20030812
- 国际申请: PCT/US04/22312 WO 20040809
- 主分类号: A61M5/315
- IPC分类号: A61M5/315
摘要:
A medication dispensing apparatus that provides a mechanical advantage. During dose preparing, a nut rotating element (410) and a screw element (368) are in a first axial arrangement such that a screwing motion of the nut rotating element and screw element relative to the apparatus housing that moves the elements a first axial distance from a home position screws a nut (364) along a drive member threaded shaft (362) a second axial distance different than the first axial distance. During dose dispensing, the nut rotating element and the screw element are in a second axial arrangement, whereby a screwing motion of the screw element relative to the housing back toward the home position advances a plunger (366) in the distal direction to axially advance the nut and thereby the drive member and a fluid container piston to dispense medicine.