Title:
PRESSURE VALVE-TYPE CEREBROSPINAL FLUID DRAINAGE PRESSURE-REGULATING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/200708
Kind Code:
A1
Abstract:
A pressure valve for regulating intracranial pressure by means of draining cerebrospinal fluid and a method for using same, the pressure valve comprising: a valve housing (100); a partitioning member (200), the partitioning member (200) being movably disposed in the valve housing (100) and partitioning an inner cavity of the valve housing (100) into a liquid-containing chamber (110) and a liquid-free chamber (120); the liquid-containing cavity (110) comprises: a liquid outlet channel (111), the liquid outlet channel (111) being located in the liquid-containing chamber (110) and being in contact with the partitioning member (200) under a normal state, wherein the partitioning member (200) may control the opening or closing of the liquid outlet channel (111); a liquid storage chamber (112), the liquid storage chamber (112) being used for storing a liquid; when the liquid outlet channel (111) is opened, the liquid in the liquid storage chamber (112) may flow into the liquid outlet channel (111); an adjusting mechanism (300), the adjusting mechanism (300) being disposed in the liquid-free chamber (120) and comprising: a force applying member (310), the force applying member (310) being used for applying a pushing force to the partitioning member (200) for closing the liquid outlet channel (111); an adjusting member (320), the adjusting member (320) being used for adjusting the magnitude of the pushing force applied by the force applying member (310).
Inventors:
SU YANG (CN)
LI TIEJIAN (CN)
WU YOUTU (CN)
WANG JAMES JIN (CN)
LI TIEJIAN (CN)
WU YOUTU (CN)
WANG JAMES JIN (CN)
Application Number:
PCT/CN2018/092911
Publication Date:
October 24, 2019
Filing Date:
June 26, 2018
Export Citation:
Assignee:
UNIV TSINGHUA (CN)
International Classes:
A61M1/00
Foreign References:
| CN103990188A | 2014-08-20 | |||
| CN205127076U | 2016-04-06 | |||
| US4776839A | 1988-10-11 | |||
| CN105764562A | 2016-07-13 | |||
| CN1106301A | 1995-08-09 | |||
| CN106687169A | 2017-05-17 | |||
| EP0588672A1 | 1994-03-23 |
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
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