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.
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申请公布号 |
US2005267500(A1) |
申请公布日期 |
2005.12.01 |
申请号 |
US20040856971 |
申请日期 |
2004.05.28 |
申请人 |
HASSLER WILLIAM L JR;DLUGOS DANIEL F JR;CRIVELLI ROCCO |
发明人 |
HASSLER WILLIAM L.JR.;DLUGOS DANIEL F.JR.;CRIVELLI ROCCO |
分类号 |
A61B17/00;A61F2/00;A61F5/00;(IPC1-7):A61B17/08 |
主分类号 |
A61B17/00 |
代理机构 |
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代理人 |
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