Title:
NEGATIVE PRESSURE SEALED DRAINAGE SYSTEM FOR DEEP CAVITY WOUND SURGICAL TREATMENT
Document Type and Number:
WIPO Patent Application WO/2017/215418
Kind Code:
A1
Abstract:
A negative pressure hermetic drainage system for deep cavity wound surgical treatment. The system comprises: a columnar porous foam drainage piece (1), a wave-form extendable and retractable sealing cover (2), a medical film (3), a drainage tube (4), a fluid storage container (7), and a negative pressure source (8). The columnar porous foam drainage piece (1) is a hydrophilic foam, and is enclosed within the wave-form extendable and retractable sealing cover (2). One end of the drainage tube (4) is inserted into an upper portion of the columnar porous foam drainage piece (1). A flap provided along a circumference of the bottom-most end of the wave-form extendable and retractable sealing cover (2) adheres, via the medical film (3), to skin surrounding a deep cavity wound. An upper end of the wave-form extendable and retractable sealing cover (2) is provided with a tube-shaped connection opening (2a) sealingly connected to the drainage tube (4). The drainage tube (4) communicates with a connection tube (6) via a straight-tube fitting (5) and is inserted into the fluid storage container (7). The fluid storage container (7) communicates with the negative pressure source (8) via a connection tube. The columnar porous foam drainage piece (1) has a cross-section area of 0.8-3 cm2, a length of 10-28 cm, and a pore diameter of 1-2 mm.
Inventors:
ZHU YUMING (CN)
LIU XINTING (CN)
GUAN HONGXIA (CN)
SONG JIUHONG (CN)
LIU XINTING (CN)
GUAN HONGXIA (CN)
SONG JIUHONG (CN)
Application Number:
PCT/CN2017/085628
Publication Date:
December 21, 2017
Filing Date:
May 24, 2017
Export Citation:
Assignee:
WUHAN VSD MEDICAL SCIENCE & TECH CO LTD (CN)
International Classes:
A61M1/00; A61M27/00
Foreign References:
| US20050107756A1 | 2005-05-19 | |||
| CN104225768A | 2014-12-24 | |||
| CN105944221A | 2016-09-21 | |||
| CN206198352U | 2017-05-31 | |||
| CN102933181A | 2013-02-13 | |||
| US5827246A | 1998-10-27 | |||
| CN103781501A | 2014-05-07 |
Attorney, Agent or Firm:
CHOFN INTELLECTUAL PROPERTY (CN)
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