Medindia

X

New Methodology to Push Long Microneedles Deep Into Brain Tissue Developed

by Vishnuprasad on  August 11, 2015 at 8:28 PM Research News   - G J E 4
Microscale needle-electrode array technology has improved brain science and engineering applications. However, one challenge is reducing the tissue damage caused by needle penetration, especially for chronic insert experiment and future medical applications.
New Methodology to Push Long Microneedles Deep Into Brain Tissue Developed
New Methodology to Push Long Microneedles Deep Into Brain Tissue Developed
Advertisement

A possible solution is to use microscale-diameter needles with flexible properties. However, such physically limited needles cannot penetrate the brain and other biological tissues because of needle fracturing on penetration.

Advertisement
Now, researchers at the the Department of Electrical and Electronic Information Engineering and the Electronics-Inspired Interdisciplinary Research Institute (EIIRIS) at Toyohashi University of Technology has discovered a methodology to temporarily enhance the stiffness of a long, high-aspect-ratio flexible microneedle, without affecting the needle diameter and flexibility in tissue.

"We investigated preparation of a silk base scaffold for a microneedle, quantitatively analyzed needle stiffness, and evaluated the penetration capability by using mouse brains in vitro/in vivo. In addition, as an actual needle application, we demonstrated fluorescenctce particle depth injection into the brain in vivo, and confirm that by observing fluorescenctce confocal microscope" explained the first author, master's degree student Satoshi Yagi, and co-author PhD candidate Shota Yamagiwa.

The leader of the research team, Associate Professor Takeshi Kawano said: "Preparation of the dissolvable base scaffold is very simple, but this methodology promises powerful tissue penetrations using numerous high-aspect-ratio flexible microneedles, including recording/stimulation electrodes, glass pipettes, and optogenetic fibers." He added: "This has the potential to reduce invasiveness drastically and provide safer tissue penetration than conventional approaches."



Source: Medindia
Advertisement

Post your Comments

Comments should be on the topic and should not be abusive. The editorial team reserves the right to review and moderate the comments posted on the site.
User Avatar
* Your comment can be maximum of 2500 characters
Notify me when reply is posted I agree to the terms and conditions

You May Also Like

Advertisement
View All