发明名称 |
Metal bellows position feedback for hydraulic control of an adjustable gastric band |
摘要 |
A remotely controlled gastric band system that is practically immune to external magnetic fields, such as from a Magnetic Resonance Imaging (MRI) machine, incorporates a bi-directional pump and fluid reservoir to adjust fluid volume for hydraulic control of a gastric band. A piezoelectric driver (e.g., rotary actuator, linear actuator) selectively compresses and expands a metal bellows hermetically sealed within a biocompatible and nonferromagnetic enclosure or case such as titanium. Directly sensing a position of the metal bellows yields an accurate reading of volume contained therein, allowing for closed-loop control of the gastric band. <IMAGE> |
申请公布号 |
EP1600120(A1) |
申请公布日期 |
2005.11.30 |
申请号 |
EP20050253304 |
申请日期 |
2005.05.27 |
申请人 |
ETHICON ENDO-SURGERY, INC. |
发明人 |
HASSLER JR., WILLIAM L.;DLUGOS JR., DANIEL F.;CRIVELLI, ROCCO |
分类号 |
A61B17/00;A61F2/00;A61F5/00 |
主分类号 |
A61B17/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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