Systems and methods for a cerebrospinal fluid flow detector

• US 10,322,268 B2
• Filed: 04/20/2017
• Issued: 06/18/2019
• Est. Priority Date: 04/20/2016
• Status: Active Grant

• Current Assignee: Dignity Health (CommonSpirit Health (Illinois))
• Original Assignee: Dignity Health (CommonSpirit Health (Illinois))
• Inventors: Sheehy, John Paul
• Primary Examiner(s): Deak, Leslie R
• Application Number:
  US15/770,579
• Publication Number:
  US 20180311485A1
• Time in Patent Office: 789 Days
• CPC Class Codes: A61B 5/00 Measuring for diagnostic purposes radiation diagnosis A61B6/00; diagnosis by ultrasonic, sonic or infrasonic waves A61B8/00; Identification of persons
• CPC Class Codes: A61B 5/032 Spinal fluid pressure
• CPC Class Codes: A61B 5/4064 Evaluating the brain A61B5/031, A61B5/369, A61B5/14553 take precedence
• CPC Class Codes: A61B 5/6852 Catheters
• CPC Class Codes: A61B 5/6868 Brain
• CPC Class Codes: A61B 6/486 involving generating temporal series of image data
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers
• CPC Class Codes: A61M 27/00 Drainage appliance for wounds or the like , i.e. wound drains, implanted drains negative pressure wound therapy devices A61M1/90; implements for holding wound open A61B17/02 ; middle ear drainage A61F11/202
• CPC Class Codes: A61M 27/006 Cerebrospinal drainage; Accessories therefor, e.g. valves
• CPC Class Codes: G01F 1/06 using rotating vanes with tangential admission

Abstract

Embodiments for a cerebrospinal fluid flow detector for detecting the flow of cerebrospinal fluid are disclosed. In some embodiments, the cerebrospinal fluid flow detector includes a casing with a rotatable wheel having a plurality of radially extending arms disposed therein. The rotatable wheel is in communication with a channel having a distal end in communication with an inlet port and a proximal end in communication with an outlet port such that the flow of cerebrospinal fluid through the channel causes the rotatable wheel to rotate. In some embodiments, each radially extending arm includes at least one radiopaque marker in which movement of the rotatable wheel caused by fluid flow through the channel allows an X-ray imaging apparatus to detect the difference in position of a respective radiopaque marker at multiple times caused by rotation of the rotatable wheel.

Claims

1. A fluid flow detector, comprising:

a casing defining an interior chamber;

a rotatable wheel disposed within interior chamber of the casing, the rotatable wheel including an axle and a plurality of radially extending arms extending from the axle, wherein at least one of the plurality of radially extending arms includes a radiopaque marker; and

a fluid pathway extending through the casing, wherein the fluid pathway is in fluid flow communication with at least one of the radially extending arms of the rotatable wheel;

wherein the rotatable wheel rotates about an axis defined by the axle and arranged within the interior chamber such that the flow of fluid through the fluid pathway causes movement of the plurality of radially extending arms and provides a visual indication of fluid flow through the channel based on a difference in position of the radiopaque marker when the rotatable wheel is rotated by the flow of fluid through the fluid pathway.

2. The fluid flow detector of claim 1, further comprising a wheel housing defining a lateral opening in fluid flow communication with the pathway which defines a channel that forms, wherein at least one of the plurality of radially extending arms extends through the lateral opening of the wheel housing and into the lumen of the channel such that the flow of the fluid through the channel applies a force to at least one of the plurality of radially extending arms to cause rotation of the rotatable wheel.

3. The fluid flow detector of claim 2, further comprising:

an inlet port in fluid flow communication with one end of the fluid pathway and an outlet port in fluid flow communication with an opposite end of the fluid pathway, wherein the inlet port is in fluid flow communication with a source of fluid.

4. The fluid flow detector of claim 1, wherein a position of the radiopaque marker is detectable through the casing via an X-ray apparatus.

5. The fluid flow detector of claim 1, further comprising:

at least one reference radiopaque marker on the casing for providing a visual reference with respect to the radiopaque marker on the radially extending arm, the at least one reference radiopaque marker being detectable by the X-ray apparatus.

6. The fluid flow detector of claim 5, wherein the radiopaque marker and the at least one reference radiopaque marker defines a circular-shaped configuration, a square-shaped configuration, a rectangular-shaped configuration, an angular configuration, a symmetrical configuration, an asymmetrical configuration, and/or oval configuration.

7. The fluid flow detector of claim 1, wherein the radiopaque marker defines a numerical designation.

8. The fluid flow detector of claim 2, wherein the wheel housing defines a lateral opening in fluid flow communication with the fluid pathway.

9. The fluid flow detector of claim 8, wherein the fluid pathway is formed through a channel defining a lumen and wherein the lateral opening is in fluid flow communication with the lumen of the channel such that at least one of the plurality of radially extending arms extends into the channel from the wheel housing.

10. A fluid flow detector system, comprising:

a fluid flow detector, comprising

a casing defining an interior chamber and a channel formed through the casing and disposed within the interior chamber for establishing fluid flow communication between an inlet port and an outlet port;

a rotatable wheel disposed within the interior chamber, the rotatable wheel defining an axle with a plurality of arms extending radially from the axle; and

a radiopaque marker associated with at least one of the plurality of arms; and

wherein rotation of the rotatable wheel when fluid flows through the channel causes movement of the radiopaque marker as the plurality of arms rotates and provides a visual indication of fluid flow through the fluid flow detector.

11. The fluid flow detector system of claim 10, further comprising:

a shunt reservoir and valve component in fluid flow communication with the channel of the fluid flow detector for passing fluid into the channel of the fluid flow detector.

12. The fluid flow detector system of claim 10, further comprising:

an X-ray apparatus for taking a first X-ray image of the casing at a first time sequence and a second X-ray image of the casing at a second time sequence.

13. The fluid flow detector system of claim 10, further comprising:

a reference radiopaque marker on the casing for providing a visual reference relative to the radiopaque marker on the radially extending arm.

14. The fluid flow detector system of claim 12, wherein the X-Ray apparatus is utilized to compare the first X-ray image of the radiopaque marker with the second X-ray image of the radiopaque marker to determine whether movement of the radiopaque marker has occurred.

15. A method, comprising:

coupling a fluid flow detector to a source of fluid, the fluid flow detector comprising a casing defining an interior chamber, a rotatable wheel defining a plurality of radially extending arms disposed within the interior chamber of the casing, and a fluid pathway extending through the casing and in fluid flow communication with the rotatable wheel, wherein the rotatable wheel includes a radiopaque marker, and wherein the flow of fluid through the fluid pathway applies a force to the radially extending arms causing the rotatable wheel to rotate and change the position of the radiopaque marker;

capturing a first x-ray image at a first position of the radiopaque marker at a first time sequence;

capturing a second x-ray image showing a second position of the radiopaque marker at a second time sequence; and

comparing the first position of the radiopaque marker with the second position of the radiopaque marker to identify a change in position of the radiopaque marker indicative of a fluid flow through the fluid flow detector.

16. The method of claim 15, further comprising:

providing a reference radiopaque marker on the casing for establishing a fixed visual reference relative to the radiopaque marker on the plurality of arms.

17. The method of claim 15, further comprising:

determining a time value associated with a change in time between the first time sequence and the second time sequence; and

determining a rate of the fluid flow through the fluid flow detector using the time value associated with the change in time and a position value associated with any difference in position of the radiopaque marker between the first time sequence and the second time sequence.

18. The method of claim 15, further comprising:

coupling a first end of a catheter to the fluid pathway of the fluid flow detector and disposing a second end of the catheter within the peritoneal cavity of an individual.