Title:
NEGATIVE PRESSURE WOUND THERAPY APPARATUS
Document Type and Number:
WIPO Patent Application WO/2016/008154
Kind Code:
A1
Abstract:
A negative pressure wound therapy apparatus, comprising a piezoelectric valve structure (1), a suction structure (2) and a micro control unit (3). The piezoelectric valve structure (1) comprises a piezoelectric elastic piece assembly (11) and a first pole piece (12) and a second pole piece (13) that are disposed on two sides of the piezoelectric elastic piece assembly (11) respectively. The piezoelectric elastic piece assembly (11) comprises an elastic piece (111) and a piezoelectric plate (112). The piezoelectric plate (112) is overlapped on one side of the elastic piece (111). The elastic piece (111) is provided with a plurality of first air ports (1111), the first pole piece is provided with at least one second air port (121), and the second air port (121) is communicated with the first air ports (1111). The suction structure (2) is disposed on one side of the piezoelectric valve structure (1), and the piezoelectric valve structure (1) is electrically connected to the micro control unit (3). Thereby, the resonant frequency can be more than 20 kHz and a noise-free effect can be achieved.
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Inventors:
CHANG KUN-LIN (CN)
WU TUNG-PO (CN)
CHENG WEN-JING (CN)
WU TUNG-PO (CN)
CHENG WEN-JING (CN)
Application Number:
PCT/CN2014/082499
Publication Date:
January 21, 2016
Filing Date:
July 18, 2014
Export Citation:
Assignee:
KOGE MICRO TECH CO LTD (CN)
International Classes:
A61M27/00; F04B45/047
Domestic Patent References:
| WO2013179789A1 | 2013-12-05 |
Foreign References:
| CN103179930A | 2013-06-26 | |||
| CN102883756A | 2013-01-16 | |||
| CN102597520A | 2012-07-18 | |||
| CN103517721A | 2014-01-15 | |||
| CN101959479A | 2011-01-26 | |||
| CN102338072A | 2012-02-01 | |||
| TW200938728A | 2009-09-16 |
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
北京康信知识产权代理有限责任公司 (CN)
北京康信知识产权代理有限责任公司 (CN)
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