Title:
遠隔制御型胃帯として使用するための熱力学駆動型可逆注入ポンプ
Document Type and Number:
Japanese Patent JP4969798
Kind Code:
B2
Abstract:
An implantable artificial sphincter (10) system provides long-term adjustment via transcutaneous energy transfer (TET), minimizing invasive adjustment through adding or removing fluid via a syringe. An infuser device (40) provides bi-directional fluid transfer via a flexible (42) conduit to a sphincter band, such as a gastric band (30), by a combination of thermodynamic actuation and a piezo-electrically disengaged drum brake assembly that thereby achieves a desirable small volume device. A propellant within a propellant cavity surrounds a metal bellows accumulator (70) biased at body temperature to either expand or collapse the bellows accumulator with the opposite direction of movement effected by a thermal element (150) that heats in combination with a negatively-biased propellant or cools in combination with a positively-biased propellant. A drum brake assembly (220) locks the metal bellows accumulator in place between adjustments by thermodynamic actuation by activating piezo-electric stack actuators (216) that disengage calipers from a brake drum attached to the bellows accumulator.
Inventors:
William El Hustler, Jr.
Daniel F. Dragos Jr.
Daniel F. Dragos Jr.
Application Number:
JP2005156073A
Publication Date:
July 04, 2012
Filing Date:
May 27, 2005
Export Citation:
Assignee:
Ethicon Endo-Surgery,Inc.
International Classes:
A61B17/00; A61F2/00; F04B43/08; A61F5/00; A61F2/02
Domestic Patent References:
| JP4272770A | ||||
| JP4325162A | ||||
| JP51117489A | ||||
| JP2003517877A | ||||
| JP2003501156A |
Foreign References:
| US6485462 |
Attorney, Agent or Firm:
Konobu Kato