The valve body is made of a resilient material which will conform to the shape of the outer wall of a catheter when the catheter penetrates through the slits and opening in the valve body thereby maintaining a fluid tight seal between {HEAD ~ the outer wall} of {TAIL ~ the catheter} and the valve body 
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The valve body is made of a resilient material which will conform to the shape of the outer wall of a catheter when the catheter penetrates through the slits and opening in the valve body thereby maintaining a fluid tight seal between { HEAD ~ the outer wall } of { TAIL ~ the catheter } and the valve body
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