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Electronic valve reader having orientation sensing mechanism

A technology for electronic valves and readers, applied in the field of determining the position and orientation of magnetic indicator devices, electronic valve readers based on magnetism, and fluid flow control valves, which can solve inaccurate device setting instructions, deflection angle increases, etc. problems for ease of use, reduced program time, and reduced user frustration

Active Publication Date: 2019-01-15
MEDTRONIC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the distance between the magnet and the compass increases, the deflection angle increases and can result in an inaccurate indication of device setting

Method used

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  • Electronic valve reader having orientation sensing mechanism
  • Electronic valve reader having orientation sensing mechanism
  • Electronic valve reader having orientation sensing mechanism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] figure 1 with figure 2 One example of a subcutaneously implantable and transcutaneously adjustable fluid flow control device 10 is shown. Fluid flow control device 10 is intended for surgical implantation in physiological shunt systems for draining fluid from one part of the body to another. For example, to connect flow control device 10 in such a system, flow control device 10 includes inlet connector 12 and outlet connector 14, each of which receives an end of a surgical tubing (not shown). The ends of the surgical tubing are seated over the connectors 12 and 14 and only the inside of the annular ridge formed near the end of each connector 12, 14 is secured thereto by a single ligature.

[0027]When the flow control device 10 is used in a drainage system intended to treat hydrocephalus, the inlet connector 12 is fluidly connected to a proximal catheter that is inserted under pressure through the skull into a fluid containing cerebrospinal fluid (CSF). In the ventr...

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PUM

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Abstract

Magnetic-based electronic valve readers 300 for determining a location and orientation of magnets coupled to implantable medical devices to determine a setting of the device (e.g., setting of a fluidflow control valve of the medical device). The electronic valve readers include an orientation sensing mechanism 630 that is provided and configured to enable the electronic valve reader to: 1) allowfor internal offset calculation of an orientation change of the electronic valve reader during a reading process; and / or 2) during the reading process, provide an indication or warning to the clinician that the orientation of the electronic valve reader has changed to an extent at or exceeding a predetermined angular acceptance threshold or window. Systems including the disclosed electronic valvereaders and methods of reading a setting of the device are also disclosed.

Description

Background technique [0001] The present disclosure relates to medical devices, and more particularly, to magnetically based electronic valve readers. [0002] Magnetic based indicator tools or valve readers are used to determine the setting of the implantable medical device. Implantable medical devices may include fluid flow control valves that control the pressure of cerebrospinal fluid (CSF) in a patient's brain. Excessive accumulation of cerebrospinal fluid (CSF), due to hydrocephalus or otherwise, manifests itself as increased pressure within the brain. Relief of CSF pressure is therapeutically beneficial and is usually accomplished by draining CSF from the ventricles in the brain using fluid flow control valves. [0003] An implantable medical device may include a target in the form of a magnet. The magnets allow the tool set to determine the setting of the medical device and change the setting without removing the subcutaneously implanted device. The tool set typical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M27/00
CPCA61M27/006G01D5/12G01D7/00A61M2205/18A61M2205/3317A61M2205/3327A61M2205/50A61M2205/502A61M2205/52A61M2205/70A61M2210/0693
Inventor D·埃默里
Owner MEDTRONIC INC