Design World

  • Home
  • Technologies
    • 3D CAD
    • Electronics • electrical
    • Fastening & Joining
    • Factory automation
    • Linear Motion
    • Motion Control
    • Test & Measurement
    • Sensors
    • Fluid power
  • Learn
    • Ebooks / Tech Tips
    • Engineering Week
    • Future of Design Engineering
    • MC² Motion Control Classrooms
    • Podcasts
    • Videos
    • Webinars
  • LEAP AWARDS
  • Leadership
    • 2022 Voting
    • 2021 Winners
  • Design Guide Library
  • Resources
    • 3D Cad Models
      • PARTsolutions
      • TraceParts
    • Digital Issues
      • Design World
      • EE World
    • Women in Engineering
  • Supplier Listings

Seal-and-lube design ensures insulin pump lifespan

By Mary Gannon | January 20, 2017

Share

FST_image_insulinpump_copyright-Ypsomed-AGType 1 diabetics are dependent on the steady flow of insulin. Portable insulin pumps allow an active, mobile life and can increase the quality of life of patients. The Swiss medical technology specialist Ypsomed is introducing a new pump known as the “mylife YpsoPump” into the European market. With a weight of just 83 grams—including the battery—and a thickness of just 16 mm, it is compact and comfortable to carry. The proven “Lube & Seal” concept from Freudenberg Sealing Technologies and lubricant manufacturer Klüber Lubrication, which is part of the Freudenberg Group, ensures the pump’s flawless functioning over its four-year lifespan. It aims at the perfect interaction of seal and lubricant.

Portable insulin pumps continually transport vital insulin into the patient. The dosing must be precise down to the microliter to keep the patient’s metabolism in balance. This is guaranteed by the extremely precise functioning of the new pump’s drive, which pushes a punch into the replaceable insulin carpule. The distance covered determines the delivery volume. A separately measured blood sugar level is the basis for controlling the pump. The target-actual comparison employs various parameters, which are measured within the pump itself—especially based on a force measurement within the drive. To facilitate a reliable measurement, as little friction as possible among all the drive’s components is important. This poses a major challenge especially for the feed seal. A rod seal seated on the driveshaft (threaded sleeve) for the punch seals the interior operation of the drive toward the carpule space and protects against the penetration of dirt particles or water.

Freudenberg Sealing Technologies was able to resolve the contradiction between minimal friction and high leak tightness with the combination of an innovative seal and a high performance lubricant from Klüber Lubrication. The rod seal also has a smooth, low-friction surface. A nanotechnology process developed by the company reduces roughness and decreases the tendency of the elastomer to adhere more strongly to the threaded sleeve when the device is stopped. This design allows even torque progression.

The already low frictional torque—four thousandths of a Newton meter— can even be cut in half with the application of a PFPE lubricant. PFPE stands for perfluorinated polyether oils, whose stability is significantly superior to that of conventional lubricants even under extreme conditions—they are even used in space flight.

Freudenberg Sealing Technologies
fst.com


Filed Under: TECHNOLOGIES + PRODUCTS, ALL INDUSTRIES, Design World articles, Medical, Seals
Tagged With: freudenberg, freudenbergsealingtechnologies
 

Tell Us What You Think!

Related Articles Read More >

Hirschtick on the cloud, CAD, and the future
china-manufacturing-future-image
Is China’s manufacturing future in trouble?
Drone-mounted inspection breaks barriers for F-35
TriStar, a misunderstood failure of design

DESIGN GUIDE LIBRARY

“motion

Enews Sign Up

Motion Control Classroom

Design World Digital Edition

cover

Browse the most current issue of Design World and back issues in an easy to use high quality format. Clip, share and download with the leading design engineering magazine today.

EDABoard the Forum for Electronics

Top global problem solving EE forum covering Microcontrollers, DSP, Networking, Analog and Digital Design, RF, Power Electronics, PCB Routing and much more

EDABoard: Forum for electronics

Sponsored Content

  • Renishaw next-generation FORTiS™ enclosed linear encoders offer enhanced metrology and reliability for machine tools
  • WAGO’s smartDESIGNER Online Provides Seamless Progression for Projects
  • Epoxy Certified for UL 1203 Standard
  • The Importance of Industrial Cable Resistance to Chemicals and Oils
  • Optimize, streamline and increase production capacity with pallet-handling conveyor systems
  • Global supply needs drive increased manufacturing footprint development

Design World Podcasts

June 12, 2022
How to avoid over engineering a part
See More >
Engineering Exchange

The Engineering Exchange is a global educational networking community for engineers.

Connect, share, and learn today »

Design World
  • Advertising
  • About us
  • Contact
  • Manage your Design World Subscription
  • Subscribe
  • Design World Digital Network
  • Engineering White Papers
  • LEAP AWARDS

Copyright © 2022 WTWH Media LLC. All Rights Reserved. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of WTWH Media
Privacy Policy | Advertising | About Us

Search Design World

  • Home
  • Technologies
    • 3D CAD
    • Electronics • electrical
    • Fastening & Joining
    • Factory automation
    • Linear Motion
    • Motion Control
    • Test & Measurement
    • Sensors
    • Fluid power
  • Learn
    • Ebooks / Tech Tips
    • Engineering Week
    • Future of Design Engineering
    • MC² Motion Control Classrooms
    • Podcasts
    • Videos
    • Webinars
  • LEAP AWARDS
  • Leadership
    • 2022 Voting
    • 2021 Winners
  • Design Guide Library
  • Resources
    • 3D Cad Models
      • PARTsolutions
      • TraceParts
    • Digital Issues
      • Design World
      • EE World
    • Women in Engineering
  • Supplier Listings