Links

Tools

Export citation

Search in Google Scholar

A Magnetic Swimming Micro-Robot that Navigates Using the Constant Field of the MRI

Proceedings article published in 2013 by E. Shchory, G. Kosa
This paper is available in a repository.
This paper is available in a repository.

Full text: Download

Question mark in circle
Preprint: policy unknown
Question mark in circle
Postprint: policy unknown
Question mark in circle
Published version: policy unknown

Abstract

Capsule endoscopy is a non-invasive method for diagnosing in the intestine area. These days there are micro-endoscope capsules which move chaotically in the digestion system, thus, sometimes preventing the need of an invasive examination. In this project our goal is to make a wireless micro-magnetic swimmer [1] which will be more effective in preventing the need of invasive examinations. Furthermore, it will be able to move to a desired location enabling it to execute various tasks, such as taking a tissue sample. The model that describes the swimmer consists of two rectangular coils connected to a flexible surface (Fig 1a).This dynamic model has 4 degrees of freedom. The dynamic equations were developed using the Lagrangian formulation. Using the dynamic equations developed, we simulated the movement of the swimmer. Based on the results of the simulations, we designed a model for manufacturing. The model has two 4.5X4.5 [mm] rectangular coils that are connected to a 16X6.5 [mm] flexible surface. Furthermore, we have four pads on the end of the surface allowing power connection to the coils (Fig 1b). The propulsion speed expected from the designed model based on the simulation is 2 [cm/s] (Fig 1c). In future work, we intend to make the micro-swimmer autonomous using a control circuit and a small power supply or inductance circuit.