Magnetic induction system and operating method for same incorporation by reference

Patent metadata

Field	Value
Publication number	US-9242117-B2
Application number	US-201013503255-A
Country	US
Kind code	B2
Filing date	Oct 25, 2010
Priority date	Oct 23, 2009
Publication date	Jan 26, 2016
Grant date	Jan 26, 2016

Abstract

The invention provides a magnetic induction system and an operating method for it in which the magnetic force can be made to act deeply and widely in any desired direction. The magnetic induction system of the invention contains multiple magnetic field generation means formed of a superconductive bulk magnet, a drive means for arranging the magnetic field generation means at a desired site and angle, and a drive control means for driving the driving means and controlling the position and the angle of the multiple magnetic field generation means so that a magnetic complex can be inducted to the desired position in a body by the synthetic magnetic field formed by the multiple magnetic field generation means, whereby the magnetic complex is inducted to be concentrated in the cartilage defected part.

First claim

The invention claimed is:

1. A magnetic induction system comprising:
multiple probe-like magnetic field generation devices in which magnetic poles of magnetic field generation ends of the individual multiple probe-like magnetic field generation devices are like-poles, p 1 a drive device configured to control a position and an angle of magnetic field generation end parts of the multiple magnetic field generation devices,
a computing device configured to compute the position and the angle of the magnetic field generation end parts of the magnetic field generation devices in order that a synthetic magnetic field can be formed in a desired site of a living body by the multiple magnetic field generation devices, so that the synthetic magnetic field can induct a magnetic complex to the desired site in the living body,
a drive controller configured to control the position and the angle of the magnetic field generation end parts via the drive device so that the magnetic field generation end parts of the multiple magnetic field generation devices could be in the position and at the angle computed by the computing device, and
the system further comprises a like-pole controller capable of controlling the drive device at a position at which the magnetic poles of the multiple magnetic field generation devices that do not face each other mutually repel each other at the desired site of the living body, wherein
the multiple probe-like magnetic field generation devices are arranged to work independently from each other, and
the computing device is configured to compute a route of a line of a magnetic force from a position in which the magnetic complex has been injected into the living body to the desired site by using values of the magnetic force of the multiple probe-like magnetic field generation devices and a resultant force vector of the magnetic force, and compute the position and the angle of the magnetic field generation end parts of the magnetic field generation devices necessary for the route creation.

2. The magnetic induction system as claimed in claim 1 , wherein the magnetic field generation devices include a superconductive bulk magnet unit.

3. The magnetic induction system as claimed in claim 2 , wherein the superconductive bulk magnet has a composition capable of providing a desired critical current density at a liquid nitrogen temperature of 77 K.

4. The magnetic induction system as claimed in claim 2 , wherein the composition of the superconductive bulk magnet is RE-Ba—Cu—O, RE being a rare earth element.

5. The magnetic induction system as claimed in claim 4 , wherein the composition of the superconductive bulk magnet is (Nd,Eu,Gd)—Ba—Cu—O, Gd—Ba—Cu—O or Y—Ba—Cu—O.

6. The magnetic induction system as claimed in claim 1 , wherein the magnetic complex is a magnetic bead-inductee complex that comprises a magnetic bead of a magnetic material and an inductee substance.

7. The magnetic induction system as claimed in claim 1 , wherein the desired site is a joint cartilage part in the living body.

8. The magnetic induction system as claimed in claim 1 , further comprising a time controller for controlling the site in the living body and an intensity of the magnetic field at that site in accordance with the time elapsed after introduction of the magnetic complex, such that the intensity of the magnetic field at the site is weaker just after introduction of the magnetic complex, and is stronger after a time has elapsed from the introduction of the magnetic complex.

9. The magnetic induction system as claimed in claim 1 , wherein the drive controller is provided with the function of controlling the intensity of the resultant magnetic field force of the synthetic magnetic field and a direction of a resultant magnetic field force vector by changing the relative position of the magnetic field generation end parts of the multiple magnetic field generation devices.

10. The magnetic induction system as claimed in claim 1 , wherein the drive device has a rotary joint part individually connected to each of the multiple magnetic field generation devices.

11. The magnetic induction system as claimed in claim 1 , wherein the multiple probe-like magnetic field generation devices include a superconductive bulk magnet and sterling type refrigerator, respectively.

12. An operating method for a magnetic induction system that comprises multiple probe-like magnetic field generation devices in which magnetic poles of magnetic field generation ends of the individual multiple probe-like magnetic field generation devices are like-poles, a drive device configured to control a position and an angle of magnetic field generation end parts of the multiple magnetic field generation devices, a computing device configured to compute the position and the angle of the magnetic field generation end parts of the magnetic field generation devices, a drive controller configured to control the drive device, and a like-pole controller,
the method comprising:
computing using the computing device the position and the angle of the magnetic field generation end parts of the magnetic field generation devices in order that a synthetic magnetic field can be formed in a desired site of a living body by the multiple magnetic field generation devices, so that the synthetic magnetic field can induct a magnetic complex to the desired site in the living body,
controlling using the drive controller the drive device so that the magnetic field generation end parts of the multiple magnetic field generation devices could be in the position and at the angle computed by the computing device, and
controlling using the like-pole controller the drive device at a position at which the magnetic poles of the multiple magnetic field generation devices that do not face each other mutually repel each other at the desired site of the living body.

13. The operating method for a magnetic induction system as claimed in claim 12 , wherein:
the magnetic induction system further comprises a time controller, and
the time controller controls the site in the living body and an intensity of the magnetic field at that site in accordance with the time elapsed after introduction of a magnetic complex, such that the intensity of the magnetic field at the site is weaker just after introduction of the magnetic complex, and is stronger after a time has elapsed from the introduction of the magnetic complex.

14. The operating method for a magnetic induction system as claimed in claim 12 , wherein in the step of controlling the drive device, the intensity of the resultant magnetic field force of the synthetic magnetic field is controlled by changing the relative position of the magnetic field generation end parts of the multiple magnetic field generation devices.

15. The operating method for a magnetic induction system as claimed in claim 12 , wherein in the step of controlling the drive device, a direction of a resultant magnetic field force vector of the synthetic magnetic field is controlled by changing the relative position of the magnetic field generation end parts of the multiple magnetic field generation devices.

16. The operating method for a magnetic induction system as claimed in claim 12 , wherein the drive device is driven by rotating a rotary joint part individually connected to each of the multiple magnetic field generation devices.

17. The operating method for a magnetic induction system as claimed in claim 12 , wherein after the synthetic magnetic field is made to act in an initial area around a local part in the living body, the area in which the synthetic

Assignees

• Murakami Masato
• Ochi Mitsuo
• Shibaura Inst Technology
• Univ Hiroshima

Inventors

• Murakami Masato
• Ochi Mitsuo

Classifications

• A61N2/02

  using magnetic fields produced by coils, including single turn loops or electromagnets (A61N2/12 takes precedence) · CPC title

• A61B2019/2253

  Human Necessities · mapped topic

• H01F6/00

  Superconducting magnets; Superconducting coils {(magnetic resonance assemblies using superconducting coil systems G01R33/3815)} · CPC title

• A61N2/002 Primary

  in combination with another treatment · CPC title

• A61B17/00

  Surgical instruments, devices or methods (A61B18/00 takes precedence; dental tools A61C3/00; eye surgery A61F9/007; ear surgery A61F11/20) · CPC title