title: [Designing of the two-way suction drainage tube in vacuum sealing].
abstract: OBJECTIVE
  To investigate the traditional VSD from one-way improvement to two-way suction drainage, meet the needs of clinical treatment, and prevent bung tube.
  
  
  METHODS
  One-way multi-side hole drainage tube of the traditional VSD was modified for bi-directional multi-side hole drainage, seaweed salt hydration alcohol polyethylene foam, Semipermeable membrane paste of Polyurethane and acrylic remains the same with that of the traditional VSD.
  
  
  RESULTS
  The applications of bi-directional multi-side hole drainage pipe can reduce the rate of plugging, rinse the complex and infection wound, create a physiological moist healing environment, and promote wound healing.
  
  
  CONCLUSIONS
  The improved VSD can reduce the failure rate and increase the therapeutic effect.
authors.affiliation: Hand, Foot Surgery Dpt., The first Hospital of PLA, Lanzhou, Gansu, 730030, China. cnroseland@163.com
authors.forename: Linge
authors.initials: L
authors.lastname: Lei
authors.forename: Wanchun
authors.initials: W
authors.lastname: Yan
authors.forename: Keming
authors.initials: K
authors.lastname: Chen
mesh_terms: D004322:Drainage / Q000295:instrumentation* / Q000379:methods*; D004867:Equipment Design; D013396:Suction / Q000295:instrumentation / Q000379:methods; D014618:Vacuum