JPWO2020163800A5

JPWO2020163800A5 -

Info

Publication number: JPWO2020163800A5
Application number: JP2021546315A
Authority: JP
Publication date: 2023-02-14
Anticipated expiration: 2040-02-07

Claims

An external adjustment device for non-invasive adjustment of an implant, the external adjustment device comprising:
controller;
a motor; and at least one magnet rotatably coupled to said motor;
including
The at least one magnet is configured to magnetically couple with a permanent magnet of the adjustable implant upon placement of the external adjustment device near the adjustable implant; and
When the at least one magnet moves, the controller is configured to detect a magnetic coupling state between the at least one magnet and the permanent magnet of the adjustable implant;
external control device.

2. The external regulation device of claim 1 , wherein the magnetic coupling state detected by the controller is one of a coupled state and an uncoupled state.

2. The external regulation device of Claim 1 , wherein the controller is configured to determine the rotational speed of the motor.

4. The external adjustment device of claim 3 , wherein the controller uses the rotational speed to determine a coupling state between the at least one magnet and the permanent magnet of the adjustable implant.

2. The external adjustment device of Claim 1 , wherein the controller is configured to determine the acceleration of the motor.

6. The external adjustment device of claim 5 , wherein the controller uses acceleration of the motor to determine a stalling condition of the at least one magnet and the permanent magnet of the adjustable implant.

7. The external adjustment device of claim 6 , wherein said determination is made by transforming an acceleration array using a Fast Fourier Transform (FFT).

8. The external adjustment device of claim 7 , wherein said determining is made by observing the third harmonic of said Fast Fourier Transform (FFT).

2. The external regulation device of claim 1 , wherein the controller wirelessly communicates with and is configured to control the motor.

3. The external control device of Claim 1 , wherein the controller comprises a smart phone.

The external conditioning device of claim 1 , further comprising a power storage device.

12. The external regulation device of claim 11 , wherein said power storage device is a battery.

2. The external control device of claim 1 , including memory.

3. The external control device of claim 1 , including a display configured to communicate information to a user.

15. The external adjustment device of Claim 14 , wherein the information communicated to the user includes a magnetic coupling state between the at least one magnet and the permanent magnet of the adjustable implant.

15. The external adjustment device of claim 14 , wherein the information communicated to the user includes an amount of change in at least one of a size of the adjustable implant and a force on the adjustable implant.

15. The external adjustment device of claim 14 , wherein the information communicated to the user includes rotational speed of one or more of the at least one magnet and the permanent magnet of the adjustable implant.

2. The external adjustment device of claim 1 , wherein the controller is configured to prevent dimensional changes of the implantable medical device beyond predetermined limits.

A method for adjusting an implant, comprising the steps of:
positioning an external adjustment device near the adjustable implant;
coupling at least one magnet of the external adjustment device with a permanent magnet of the adjustable implant;
generating a varying magnetic field by rotating the at least one magnet of the external adjustment device;
monitoring the rotational speed of the at least one magnet of the external adjustment device to determine a magnetic coupling state between the at least one magnet and the permanent magnet of the adjustable implant;
method including.