Body fluid drainage assembly

An assembly for draining cerebro-spinal fluid from a human body comprising:

• (a) a graduated drip chamber having a top wall, a bottom wall, a peripheral wall extending between said top and bottom walls, cerebro-spinal fluid inlet means including a one-way valve for introducing cerebro-spinal fluid into said drip chamber, yet preventing cerebro-spinal fluid from flowing from said drip chamber toward said human body, said one-way valve positioned within said drip chamber below the top wall fluid overflow outlet means including a fluid passageway in said top wall for passing fluid upwardly through said top wall to remove overflow fluid from said drip chamber, when the level of said cerebro-spinal fluid within said drip chamber reaches the top wall and cerebro-spinal fluid outlet means operatively connected to said bottom wall for draining cerebro-spinal fluid from said drip chamber;
• (b) an elongated flexible tubular member operatively connected to said fluid inlet means for introducing cerebro-spinal fluid from said human body into said drip chamber;
• (c) cerebrospinal fluid pressure monitoring means operatively connected to said elongated flexible tubular member;
• (d) tubular drainage means operatively connected to said fluid outlet means at said bottom wall for draining cerebro-spinal fluid from said drip chamber;
• (e) fluid overflow bypass tube means operatively connecting said fluid overflow outlet means in said top wall with said tubular drainage means for transferring overflow fluid from said fluid overflow outlet means to said tubular drainage means;
• and,
• (f) gas venting means comprising a flexible, compressible gas outlet tube operatively connected to said top wall for releasing gas from said chamber, a biological filter operatively connected to said gas outlet tube and spaced apart from said top wall, and tube clamping means operatively connected to said gas outlet tube between said filter and said top wall for compressing said gas outlet tube and preventing the flow of fluid between said chamber and said filter when activated.