HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Blogs
Engineering Materials
Video: Worm Hooks Inspire Better Bandages
5/17/2013

Image 1 of 4      Next >

The Karp Lab has invented a flexible adhesive patch covered with microneedles that adheres well to wet, soft tissues, but does not cause damage when removed.   (Source: The Karp Lab/Brigham and Women's Hospital)
The Karp Lab has invented a flexible adhesive patch covered with microneedles that adheres well to wet, soft tissues, but does not cause damage when removed.
(Source: The Karp Lab/Brigham and Women’s Hospital)

Image 1 of 4      Next >

Return to Article

View Comments: Threaded|Newest First|Oldest First
CLMcDade
User Rank
Gold
Wet and dry
CLMcDade   5/17/2013 11:20:21 AM
NO RATINGS
 Nice article Ann.  Yet another product approach inspired by nature's handiwork. 

I am curious about one thing, which is the role that moisture plays in turning the gripping ability on and off. Controlling moisture to the bandage in an organic environment seems, well, uncontrollable given sweat, blood, mucous, etc.  How do they get the bandage dry on demand so that it releases?

Ann R. Thryft
User Rank
Blogger
Re: Wet and dry
Ann R. Thryft   5/17/2013 12:37:21 PM
NO RATINGS
Clinton, the mechanics aren't wet vs dry, but engorged with fluid so hooks interlock with intestinal walls/wound tissue, vs not engorged so they disconnect from same. You're right, in this environment everything is wet, so getting something dry is not possible, hence, this clever design.

Cabe Atwell
User Rank
Blogger
Re: Wet and dry
Cabe Atwell   5/17/2013 4:36:59 PM
NO RATINGS
Gross!

Like a plunger with Velcro. Going to be even harder to pull off? Great...

C

Ann R. Thryft
User Rank
Blogger
Re: Wet and dry
Ann R. Thryft   5/23/2013 12:05:14 PM
NO RATINGS
Cabe, good analogy of a plunger with Velcro. it's only hard to pull off while the hooks are engorged with fluid. And I agree--it's gross! But that's part of the fun.



Cabe Atwell
User Rank
Blogger
Re: Wet and dry
Cabe Atwell   5/30/2013 12:12:53 AM
NO RATINGS
Reminds me of Cyberpunk type "wetware" medical tech. Next step, interfacing the bandage with the user's nervous system.

C

Ann R. Thryft
User Rank
Blogger
Re: Wet and dry
Ann R. Thryft   5/30/2013 12:55:11 PM
NO RATINGS
I've read some of the same cyberpunk sci-fi, Cabe. The nervous system interface would be both wild and appropriate technology for this application.



Cabe Atwell
User Rank
Blogger
Re: Wet and dry
Cabe Atwell   6/10/2013 7:53:46 PM
NO RATINGS
In all seriousness, EEG connections could benefit from piercing the skin.

C

Ann R. Thryft
User Rank
Blogger
Re: Wet and dry
Ann R. Thryft   6/11/2013 12:45:14 PM
NO RATINGS
I agree, and very good point. Not just EEG, but other types of diagnostics as well.

Cabe Atwell
User Rank
Blogger
Re: Wet and dry
Cabe Atwell   6/11/2013 4:16:56 PM
NO RATINGS
After watching the video again, it looks like the "swellable" needles may hurt.

What is the depth they take?

C

Ann R. Thryft
User Rank
Blogger
Re: Wet and dry
Ann R. Thryft   6/11/2013 8:24:55 PM
NO RATINGS
Cabe, can you rephrase the question? What depth are you asking about?

Charles Murray
User Rank
Blogger
Re: Wet and dry
Charles Murray   5/17/2013 6:22:11 PM
NO RATINGS
Ann, I'm curious whether the hooked patch would cause pain for a patient.

Ann R. Thryft
User Rank
Blogger
Re: Wet and dry
Ann R. Thryft   5/23/2013 12:06:29 PM
NO RATINGS
Chuck, I know it seems counterintuitive, but the tiny plastic hooks are so small and flexible/soft that they're supposed to be painless. The whole point of the device is adhering to wounds while not causing pain and then being easy to take off when not engorged with fluid.



Cadman-LT
User Rank
Platinum
Re: Wet and dry
Cadman-LT   5/18/2013 12:46:25 AM
NO RATINGS
Ann, I am with Cabe...gross....that kinda stuff just creeps me out!

far911
User Rank
Silver
Re: Wet and dry
far911   5/19/2013 8:56:35 AM
NO RATINGS
Using germs to kill germs? Sounds pretty ironic. I doubt many people would be willing to use this.

Rob Spiegel
User Rank
Blogger
Both Cool and Gross
Rob Spiegel   5/17/2013 11:58:27 AM
NO RATINGS
Wow. They have to look pretty hard for examples in nature to find this parasite's ability to hook onto fish intestines. Fascinating story, Ann. By the way, I recently found out that a hearty 60 percent of species on earth are parasitic, while only 40 percent are non-parasitic. 

William K.
User Rank
Platinum
Hooks inspire better bandages.
William K.   5/20/2013 9:48:12 PM
NO RATINGS
This product shows once again that we can learn from nature. The challenge is knowing enough to understand where to look.

 

Partner Zone
More Blogs from Engineering Materials
As the 3D printing and overall additive manufacturing ecosystem grows, standards and guidelines from standards bodies and government organizations are increasing. Multiple players with multiple needs are also driving the role of 3DP and AM as enabling technologies for distributed manufacturing.
A growing though not-so-obvious role for 3D printing, 4D printing, and overall additive manufacturing is their use in fabricating new materials and enabling new or improved manufacturing and assembly processes. Individual engineers, OEMs, university labs, and others are reinventing the technology to suit their own needs.
For vehicles to meet the 2025 Corporate Average Fuel Economy (CAFE) standards, three things must happen: customers must look beyond the data sheet and engage materials supplier earlier, and new integrated multi-materials are needed to make step-change improvements.
3D printing, 4D printing, and various types of additive manufacturing (AM) will get even bigger in 2015. We're not talking about consumer use, which gets most of the attention, but processes and technologies that will affect how design engineers design products and how manufacturing engineers make them. For now, the biggest industries are still aerospace and medical, while automotive and architecture continue to grow.
More and more -- that's what we'll see from plastics and composites in 2015, more types of plastics and more ways they can be used. Two of the fastest-growing uses will be automotive parts, plus medical implants and devices. New types of plastics will include biodegradable materials, plastics that can be easily recycled, and some that do both.
Design News Webinar Series
12/11/2014 8:00 a.m. California / 11:00 a.m. New York
12/10/2014 8:00 a.m. California / 11:00 a.m. New York
11/19/2014 11:00 a.m. California / 2:00 p.m. New York
2/25/2015 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Jan 26 - 30, IPv6 for Micros – Hands-On
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  67


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Last Archived Class
Sponsored by Stratasys
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2015 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service