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Body fluid drainage system

  • US 10,166,375 B2
  • Filed: 03/24/2015
  • Issued: 01/01/2019
  • Est. Priority Date: 03/19/2010
  • Status: Active Grant
First Claim
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1. A body fluid drainage system, comprising:

  • a catheter having a proximal portion and a distal portion opposite the proximal portion, wherein the proximal portion is configured to be in fluid communication with a site of excess body fluid within the patient;

    a valve device configured to change resistance to flow through the catheter;

    a pressure sensor assembly including a first pressure sensor upstream of the valve device configured to measure pressure within a catheter portion upstream of the valve device and a second pressure sensor downstream of the valve device configured to measure pressure within a catheter portion downstream of the valve device, wherein the pressure sensor assembly is configured to be spaced apart from the inlet of the catheter and the ventricles of the patient'"'"'s brain, and wherein pressure measurements taken from the pressure sensor assembly are used to derive pressure at a position spaced apart from the first and second pressure sensors; and

    a controller operatively coupled to the valve device and the pressure sensor assembly, wherein the controller is configured to derive pressure via the pressure sensor assembly, and wherein the controller is configured to change the resistance to flow through the valve device in response to the derived pressure.

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