Fluid flow control devices, rotors and magnets with increased resistance to inadvertent setting change and improved accessory tool coupling

Patent metadata

Field	Value
Publication number	US-2022016405-A1
Application number	US-202117490648-A
Country	US
Kind code	A1
Filing date	Sep 30, 2021
Priority date	Jun 21, 2012
Publication date	Jan 20, 2022
Grant date	—

Abstract

Implantable physiological shunt systems and related fluid flow control devices and accessories for use therewith. Devices, systems and methods relating to implantable medical fluid flow control devices, rotors and magnets with increased resistance to inadvertent setting changes. Devices, systems and methods relating implantable medical fluid flow control devices, rotors and magnets which provide improved magnetic coupling to fluid flow control device accessories such as adjustment tools.

First claim

What is claimed is:

1 . A rotor assembly for an adjustable fluid flow control device, the rotor assembly comprising:
a base comprising a central vertical axis; two magnets mounted in the base, each magnet comprising a planar surface; wherein each of the two magnets are embedded in the base such that the planar surface of each magnet lies in a plane substantially perpendicular to the central vertical axis; and wherein each magnet comprises an angle of polarization greater than or equal to 0° and less than 90° relative to the central vertical axis.

2 . The rotor assembly of claim 1 , wherein each magnet comprises an angle of polarization greater than 70° and less than 90° relative to the central vertical axis.

3 . The rotor assembly of claim 1 , wherein the two magnets are coupled together.

4 . The rotor assembly of claim 3 , wherein each of the two magnet portions comprise magnetic material comprising a material grain; and
wherein the material grain comprises an angle equal to the angle of polarization of the magnet.

Assignees

• Medtronic Xomed Inc

Inventors

• Bertrand W Jeff
• Speckman Lori
• Luedi Manfred Karl
• Leung Chun Man Alan
• Hampton Lawrence
• Shah Deep

Classifications

• F16K31/088

  the movement of the first magnet being a rotating or pivoting movement · CPC title

• A61M39/22 Primary

  Valves or arrangement of valves {(A61M39/02, A61M39/0247, A61M39/16 take precedence; regulating valves in infusion systems A61M5/16881; in devices worn by the patient for the reception of urine, faeces, catamenial or other discharge, or in colostomy devices A61F5/4405)} · CPC title

• F16K35/16

  with locking member actuated by magnet · CPC title

• A61M27/006 Primary

  Cerebrospinal drainage; Accessories therefor, e.g. valves · CPC title

• F16K31/08

  using a permanent magnet · CPC title