System and method for maneuvering coils power optimization
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61B-034/00
A61B-001/00
A61B-001/04
A61B-005/06
출원번호
US-0908245
(2014-08-26)
등록번호
US-10070932
(2018-09-11)
국제출원번호
PCT/IL2014/050771
(2014-08-26)
국제공개번호
WO2015/029033
(2015-03-05)
발명자
/ 주소
Hason, Eshel
Inbar, Golan
Peleg, Dori
출원인 / 주소
Given Imaging Ltd.
대리인 / 주소
Pearl Cohen Zedek Latzer Baratz LLP
인용정보
피인용 횟수 :
0인용 특허 :
50
초록▼
An optimization unit controls electrical currents of a set of electromagnets to generate a wanted maneuvering magnetic field pattern (MMP) for moving an in-vivo device in the GI system. The optimization unit may calculate a magnetic force and a magnetic field to maneuver the in-vivo device from a cu
An optimization unit controls electrical currents of a set of electromagnets to generate a wanted maneuvering magnetic field pattern (MMP) for moving an in-vivo device in the GI system. The optimization unit may calculate a magnetic force and a magnetic field to maneuver the in-vivo device from a current location and/or orientation to a new location and/or orientation. The optimization unit may solve a magnetic force optimization problem with respect to the magnetic force in order to determine electrical currents suitable for generating the wanted MMP. The optimization unit may additionally or alternatively solve a minimum electrical power optimization problem with respect to the electrical power to be consumed by the electromagnets in order to recalculate or adjust the electrical currents. The optimization unit may solve one or more of the optimization problems while complying with a set of constraints associated with or derived from each type of optimization objective.
대표청구항▼
1. A method for moving an in-vivo device in vivo, comprising: in a magnetic system comprising a number of N electromagnets for generating a maneuvering magnetic field pattern to move a device in vivo,(a) receiving data representative of: a first set of magnetic field particulars calculated based on
1. A method for moving an in-vivo device in vivo, comprising: in a magnetic system comprising a number of N electromagnets for generating a maneuvering magnetic field pattern to move a device in vivo,(a) receiving data representative of: a first set of magnetic field particulars calculated based on data representing a location and orientation of the in-vivo device, anda second set of magnetic field particulars to be generated by the electromagnets;(b) selecting, based on the location and orientation,(b.1) one or more optimization objectives from: (i) a minimum difference between a value or values of the second set of magnetic field particulars and respective value or values of the first set of magnetic field particulars, and(ii) a minimum electrical power to be consumed by the electromagnets, and(b.2) a set of constraints associated with or derived from a selected optimization objective and the first set of magnetic field particulars; and(c) providing to the electromagnets a set of electrical currents such that: the second set of magnetic field particulars or the minimum electrical power satisfies the selected optimization objective(s), and the selected set of constraints is complied with. 2. The method as in claim 1, wherein selecting a set of constraints comprises selecting one or more constraints from a group consisting of: (a) a permissible value, or range, of the magnetic field (B);(b) a permissible value, or range, of the magnetic force (F);(c) a permissible value, or range, of the magnetic torque (T);(d) a permissible value, or range, of a direction (α) of the magnetic field;(e) a permissible value, or range, of a direction (β) of the magnetic force; and(f) a permissible value or range of a ratio (R) between the magnetic field (B) and the magnetic force (F). 3. The method as in claim 1, wherein the location and orientation data comprises data representing a new location and orientation the in-vivo device is to be maneuvered to. 4. The method as in claim 1, wherein the location and orientation data comprises data representing a current location and a current orientation the in-vivo device is to be maneuvered from. 5. The method as in claim 4, comprising calculating the first set of magnetic field particulars based on (i) the current location and orientation that the in-vivo device is to be maneuvered from, or (ii) a new location and orientation that the in-vivo device is to be maneuvered to, or (iii) both the current and new locations and orientations the in-vivo device is to be maneuvered from and to, respectively. 6. The method as in claim 1, wherein each of the first and second sets of magnetic field particulars comprises a magnetic field, a magnetic force and a magnetic torque. 7. The method as in claim 6, wherein a value of the magnetic force depends on a factor selected from a group of factors consisting of: a location of the device in the gastrointestinal system and a velocity of the device in the gastrointestinal system. 8. The method as in claim 6, wherein a magnetic force applied to the in-vivo device is selected from a group consisting of: (i) a maximum magnetic force (Fmax) and (ii) a magnetic force which is less than the maximum magnetic force. 9. The method as in claim 6, comprising solving a force optimization problem for a calculated magnetic force to obtain a first set of electrical currents for the electromagnets. 10. The method as in claim 9, further comprising solving a minimum electrical power optimization problem to obtain a second set of electrical currents to drive the electromagnets. 11. The method as in claim 9, comprising, depending on: (i) a region of the gastrointestinal tract the in-vivo device is at, or (ii) the magnitude of the magnetic force required to move the in-vivo device, deciding to solve, or to refrain from solving, a minimum electrical power optimization problem to obtain a second set of electrical currents to drive the electromagnets. 12. The method as in claim 9, comprising providing to the electromagnets the first set of electrical currents when no minimum electrical power optimization problem is to be solved, and a second set of electrical currents when the minimum electrical power optimization problem is solved. 13. The method as in claim 1, comprising calculating the set of electrical currents, wherein calculating the set of electrical currents comprises: (a) calculating a maneuvering vector ({right arrow over (V)}ref) including a combination of set of magnetic field particulars of the maneuvering magnetic field pattern;(b) calculating an initial set of N linear electrical currents ({right arrow over (I)}) that complies with the maneuvering vector ({right arrow over (V)}ref) and results in minimal total electrical power (Pmin);(c) scaling down the initial N linear electrical currents ({right arrow over (I)}) by multiplying the initial N linear electrical currents ({right arrow over (I)}) by an electrical current correction factor α;(d) compensating the N scaled down linear electrical currents ({right arrow over (I)}) for non-linearity artifacts to obtain a set of N compensated electrical currents (Ĩ);(e) if a total electrical power (Pt) resulting from the N compensated electrical currents (Ĩ) is equal to or greater than a maximum power threshold (Pmax) performing, (i) converting the N compensated electrical currents (Ĩ) into N linear electrical currents;(ii) multiplying the N linear electrical currents ({right arrow over (I)}) obtained at step (e)(i) by a power correction factor g (0
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