Aggregation and control of magneto-responsive entities
US9905347B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2012 |
| Grant date | Feb 27, 2018 |
| Priority date | — |
| Expiry date | Jun 13, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/374
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Applicants have discovered a novel apparatus and method to aggregate and displace a plurality of magneto-responsive entities (steerable self-propelled entities or SSPEs) in three dimensions using time-multiplexing. The apparatus for controlling aggregation of SSPEs in a body comprises at least three sets of magnetic field sources arranged in three axes for generating a controlled magnetic field and a controller connected to at least one of said magnetic field sources to create a three dimensional convergence point. The method for aggregating the entities can comprise using a first set and a second set of said magnetic field sources to generate opposed magnetic field gradients in each said set to cause aggregation of said magneto-responsive entities in two axes and wherein the controller is configured to reverse a direction of said magnetic field gradient in a third set of magnetic field sources in a third axis according to a first predetermined program.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.