We use cookies to understand how you use our site and to improve your experience. This includes personalizing content and advertising. To learn more, click here. By continuing to use our site, you accept our use of cookies. Cookie Policy.

Features Partner Sites Information LinkXpress
Sign In
Advertise with Us
Sekisui Diagnostics

Download Mobile App




Events

ATTENTION: Due to the COVID-19 PANDEMIC, many events are being rescheduled for a later date, converted into virtual venues, or altogether cancelled. Please check with the event organizer or website prior to planning for any forthcoming event.

Magnetic Needle Performs Less Invasive, More Precise Surgery and Diagnostic Tests

By LabMedica International staff writers
Posted on 25 Apr 2022
Print article
Image: MPACT-Needle (Photo courtesy of Johns Hopkins)
Image: MPACT-Needle (Photo courtesy of Johns Hopkins)

A tiny, untethered needle can enter the body through an incision no larger than a pin prick to perform biopsies, suture wounds, and even deliver cancer-fighting chemotherapy directly to tumors. Controlled by externally applied magnetics forces—no attached, guiding wires, or human or robotic hands—these miniscule tools promise a future of more precise, safer, and far less invasive surgery, experts say. However, as devices get smaller, so does their response to the magnetic forces that cause them to move and steer their course. Now, researchers have a solution: a surgical needle equipped with small magnets inside that, when stimulated by the externally applied forces, slip from one end of the needle to another, tapping against a rigid plate and supplying ample force to penetrate tissue.

In a study, a team of researchers at the Johns Hopkins Whiting School of Engineering (Baltimore, MD, USA) have demonstrated for the first time that untethered magnetic needles can be forceful enough to accomplish surgery. The researchers call their device the "Pulse Actuated Collisions for Tissue-penetrating Needle," or MPACT-Needle. For their experiments, the team connected a slender thread of suturing material to the needle, using a joystick connected to a computer to deliver commands that enabled the MPACT-Needle to perform surgical suturing on a sample rabbit cornea.

The team's next step is to develop better, more accurate motion-control algorithms equipped with imaging modalities to precisely control the movement of the device, making surgeries and procedures safer. The researchers believe that if the technology becomes successful, their new magnetic needles would make it possible to access hard-to-reach, delicate areas of the body, such as the bile duct, to deliver drugs directly to tumors, extract biopsy samples, or suture a wound rapidly and effectively to stem internal bleeding.

"These extremely small tools have the potential to revolutionize medicine, but as anyone who has played with magnets knows, size is important," said Axel Krieger, an assistant professor of mechanical engineering at Johns Hopkins Whiting School of Engineering. "The smaller the surgical tool, the less invasive the surgery, but also the weaker the device's response to magnetic force. One of the biggest challenges facing us is how to make sure that these mini-tools can be moved with enough force to penetrate tissue and do the job they are there to do."

"We proved that these tiny magnetic needles can have strong enough forces to perform delicate surgery with limited invasiveness," said study leader Onder Erin, a postdoctoral fellow in mechanical engineering at Johns Hopkins. "I can envision a time when our device will also be used to perform biopsies, and even deliver therapeutics and chemotherapy directly to tumors."

Related Links:
Johns Hopkins Whiting School of Engineering 

Automated ELISA-IFA-BLOT Processor AP 22
Gold Supplier
SARS-CoV-2 Multiplex Real-Time RT-PCR Assay
GSD NovaPrime Plus SARS-CoV-2
New
Microplate Incubator Shaker
iShak TS4 NXT
New
Automatic Specific Protein Analyzer
PA 900

Print article

Channels

Molecular Diagnostics

view channel
Image: A new method reliably detects protein changes in blood that are typical of Parkinson`s disease (Photo courtesy of Pexels)

First-Ever Blood Test Detects Parkinson’s Disease

Until now, the diagnosis of Parkinson's disease has been based primarily on typical movement disorders such as muscle stiffness, slower movements and shaking. However, the disease starts up to 20 years... Read more

Industry

view channel
Image: Fujirebio has acquired ADx NeuroSciences for 40 million Euros (Photo courtesy of Pexels)

Fujirebio Acquires ADx NeuroSciences to Speed Development of Neurodegenerative Diseases Diagnostic Tests

Fujirebio Holdings, Inc. (Tokyo, Japan) has announced the acquisition of ADx NeuroSciences (Gent, Belgium) for EUR 40 million in a deal that is expected to close in July 2022, pending the satisfaction... Read more
Copyright © 2000-2022 Globetech Media. All rights reserved.