Dynamic adjustment tool for programming an implantable valve

摘要

A tool includes a locator having a center aligned with a rotor axis when disposed over the valve. The locator has a first dimension approximately perpendicular with the rotor axis. A wall of the locator forms a volume to allow an adjustor to be disposed therein. The adjustor fits within the wall and has a magnet having a magnetic axis to unlock the rotor. An adjustable outer wall has a first position dimension permitting the adjustor to rotate about the center of the locator and aligning the magnetic axis with the center. The adjustable outer wall has a second position dimension less than the first dimension and the first position dimension. The adjustor can move lateral, rotational, and orbital in the locator misaligning the magnetic axis with the center. Misaligning the magnetic and rotor axes unlocks the rotors and the magnet maintains the unlocked state even when the axes are misaligned.

主权项

1. A tool for changing a current setting of a magnetically readable and settable valve implanted in a living being, the valve having an external cross-section and an internal rotor rotatable about a rotor axis having a locked and an unlocked state, the tool comprising:
a locator comprising:
a center aligned with the rotor axis when disposed over the valve;a first dimension approximately perpendicular with the rotor axis; anda wall having a second dimension approximately perpendicular to the first dimension and forming a volume; and an adjustor disposed in the volume, comprising:
an adjustable outer wall at least partially disposed within the volume; anda magnet unlocking the internal rotor, having a magnetic axis, and disposed approximately in a center of the adjustor;wherein the adjustable outer wall has a first position dimension approximately equal to or less than the first dimension of the locator, permitting the adjustor to rotate about the center of the locator;wherein the magnetic axis is aligned with the center of the locator when the adjustor is disposed in the volume and the adjustable outer wall has the first position dimension;wherein the adjustable outer wall has a second position dimension less than the first dimension of the locator and less than the first position dimension, permitting the adjustor to move at least two of lateral, rotational, and orbital in the volume of the locator;wherein the magnetic axis can be misaligned with the center of the locator when the adjustor is disposed in the volume and the adjustable outer wall has the second position dimension; wherein the rotor is in the unlocked state when the magnetic axis aligns with the rotor axis; and wherein the rotation of the adjustor sets the valve when the rotor is in the unlocked state.