发明专利
JP4180264B2 Method for improving the start-up performance of the ultrasound system in the zero-load state
有权
基本信息:
- 专利标题: Method for improving the start-up performance of the ultrasound system in the zero-load state
- 申请号:JP2001323795 申请日:2001-10-22
- 公开(公告)号:JP4180264B2 公开(公告)日:2008-11-12
- 发明人: エイタン・ティー・ウィーナー
- 申请人: エシコン・エンド−サージェリィ・インコーポレイテッドEthicon Endo−Surgery,Inc.
- 专利权人: エシコン・エンド−サージェリィ・インコーポレイテッドEthicon Endo−Surgery,Inc.
- 当前专利权人: エシコン・エンド−サージェリィ・インコーポレイテッドEthicon Endo−Surgery,Inc.
- 优先权: US24189000 2000-10-20; US86637201 2001-05-25
- 主分类号: A61B17/3211
- IPC分类号: A61B17/3211 ; A61B17/00 ; A61B17/32 ; A61B18/00 ; B06B1/02 ; B06B1/06 ; H04R1/22
摘要:
The start up performance of an ultrasonic system under zero load conditions is improved by setting a phase set point in a frequency control loop such that, at start up under zero load conditions, the phase set point intersects a point on a phase-frequency response curve which has a low positive slope. This intersection point on the phase-frequency response curve changes as the load is increased and the system Q is decreased. The controller "seeks" a target 0 DEG impedance phase angle. The frequency of the ultrasonic generator is set to an off-resonance frequency which is lower than the resonance of any known hand piece/blade combination. In order for the drive voltage to not exceed the physical limit of the system, the drive current is set to a low level. The drive frequency is then smoothly increased in steps until the target 0 DEG impedance phase delta is located.
公开/授权文献:
信息查询:
EspacenetIPC结构图谱:
A | 人类生活必需 |
--A61 | 医学或兽医学;卫生学 |
----A61B | 诊断;外科;鉴定 |
------A61B17/00 | 外科器械、装置或方法,例如止血带 |
--------A61B17/32 | .手术切割器械 |
----------A61B17/3205 | ..切除器械 |
------------A61B17/3211 | ...手术刀或解剖刀;其附件 |