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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 (Qinghuayuan, Haidian District, Beijing 4, 100084, CN)
LI, Tiejian (Qinghuayuan, Haidian District, Beijing 4, 100084, CN)
WU, Youtu (Qinghuayuan, Haidian District, Beijing 4, 100084, CN)
WANG, James jin (Qinghuayuan, Haidian District, Beijing 4, 100084, CN)
Application Number:
CN2018/092911
Publication Date:
October 24, 2019
Filing Date:
June 26, 2018
Export Citation:
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Assignee:
TSINGHUA UNIVERSITY (Qinghuayuan, Haidian District, Beijing 4, 100084, CN)
International Classes:
A61M1/00
Foreign References:
CN103990188A2014-08-20
CN205127076U2016-04-06
US4776839A1988-10-11
CN105764562A2016-07-13
CN1106301A1995-08-09
CN106687169A2017-05-17
EP0588672A11994-03-23
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (Room 301 Trade Building, Zhaolanyuan Tsinghua University, Qinghuayuan, Haidian District, Beijing 4, 100084, CN)
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