Features | Partner Sites | Information | LinkXpress
Sign In
Ampronix
Shuenn Bao Shing Corporation
SOREDEX

Sharkskin Surface Topography Inhibits Bacterial Growth

By HospiMedica International staff writers
Posted on 07 Jan 2009
A new way to control infections on artificial surfaces, based on the physical properties of a shark's skin, is able to inhibit the growth of microorganisms and bacteria, including Staphylococcus aureus, Pseudomonas aeruginosa, and Escherichia coli.

The Sharklet surface technology antibacterial properties do not derive from a chemical characteristic, but rather from the shape and microscopic pattern alone. The surface technology is comprised of billions of tiny, raised, microscopic sections that mimic the height, width, length, and curvature of natural sharkskin surface. Each diamond shaped section measures 25 microns across, or about a fifth of the thickness of a human hair, and contains seven raised ribs of varying length that various microorganisms find inhospitable. The sharkskin patterns are etched using a technique called deep ion lithography, and can be embedded onto the surfaces of medical devices such as catheters or artificial hips, as well as medical care equipment such as hospital beds, and even door knobs, and are capable of controlling bacterial growth for up to 21 days.

The Sharklet pattern has been tested and proven effective against plant, animal, and bacterial organisms, and can it be tuned to evoke a specific bioresponse from organisms. While not discernable to the naked eye or easily felt to the touch, the surface technology has demonstrated in laboratory tests to be inhospitable to bacterial growth and biofilm formation, when compared to smooth surfaces. Sharklet surface technology was developed by Sharklet Technologies (Alachua, FL, USA).

"It's the first nontoxic, long lasting, and no-kill surface to control the growth of harmful microorganisms,” said Mark Spiecker, vice president of operations at Sharklet.

A general rule of the ocean is that slow moving marine animals, like whales, are host to organisms such as barnacles and algae, while fast moving animals are generally clean. Certain species of slow-moving sharks seem to violate this rule, however, staying relatively clean due in part to their unique skin pattern. Sharkskin is made of a matrix of tiny, hard, tooth-like structures called dermal denticles or placoid scales. These structures are shaped like curved, grooved teeth and they make the skin a very tough armor with a texture like sandpaper. They have the same structure as a tooth with an outer layer of enamel, dentine, and a central pulp cavity. These scales also help the shark swim more quickly because their streamlined shapes helps decrease the friction of the water flowing along the shark's body by channeling it through grooves.

Related Links:
Sharklet Technologies



Asian Healthcare Show
Armstrong Medical Industries
CardioComm Solutions

Channels

Women's Health

view channel

Women with PTSD Face Higher Pregnancy Risk

Suffering from post-traumatic stress disorder (PTSD) significantly increases a pregnant woman's risk of premature birth, according to a new study. Researchers at Stanford University (CA, USA) conducted a study to identify antenatal PTSD status and spontaneous preterm delivery in a retrospective cohort (2000-2012).... Read more

Health IT

view channel
Image: A screenshot from the 'cat and mouse' game designed to treat amblyopia (Photo courtesy of Ohio State University).

Video Games Help Improve Vision Training

New video games add an important element of entertainment to the repetitive training needed to improve vision in people with ambylopia (lazy eye) and poor depth perception. Developed by researchers... Read more

Hospital News

view channel
Image: Proposed site of the new University of Canberra Public Hospital (Photo courtesy of ACT).

New Hospital Planned at the University of Canberra

The government of the Australian Capital Territory (ACT, Canberra, Australia) has signed an agreement with University of Canberra (UC; Australia) to build a new hospital on its campus. The new UC Public... Read more

Business

view channel

Staff Shortages Driving Patient Monitoring Device Sector

Staff shortages and reductions are driving sales of patient monitoring systems with remote or wireless reporting functions. These are the latest findings of Kalorama Information (New York, NY, USA), an independent medical market research firm. While patient monitoring includes all products and services that facilitate... Read more
 
Copyright © 2000-2014 Globetech Media. All rights reserved.