• Category Archives: ADA technologies / Physionetics / Toughware PRX

V2P prehensor – first look

This is a first comment on features of the new V2P Prehensor designed and built by Bradley Veatch (Physionetics / ADA Technologies). One of the best features is that right out of the box this prehensor looks great – I got compliments for wearing high tech that was consistently valued higher than a human hand shape. And that right out of the box this allows tweaks and improvements such as my winter tyres that I put on.

Previous works to study:

  • Hooks are without question important, and Dr Harold Sears’ doctoral thesis highlights the use of a hook design with wider claw surfaces. So far, I have not seen this idea put into practice. Until now. The V2P has wide claw surfaces.
  • The Trautman hook precedes some of the design elements found here such as a non-curved hook grab part and wide round claws – but the V2P is just so much more beautifully and powerfully done.

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Physionet V2P prehensor by ADA Technologies, Inc.

After all that we had discussed in June 2008 – cable ball connector, spring settings and their modifications, the new Otto Bock MovoHook that I got a bit later, and Brad who asked for photos of the MovoHook – it seems that Bradley Veatch released a new hook through PhysioNetics through ADA Technologies.

This interesting product termed V2P prehensor seems to feature near car-lifting strength spring setting, and looks like the Hummer of All Hooks or even a weapon. I like its appearance but the ultimate interest is in its function. The V2P also features non-linear spring settings.

I now use a pimped version of the Otto Bock MovoHook and a new wrist joint that we built ourselves (currently MSM wrist 0.1-rev, details freely available for download if you want to build one as well), and that covers all aspects of my daily situations with some rare exceptions that are probably inherent to hand prosthetics rather than a specific solution. Most notably, the MovoHook contains two sufficiently useful spring settings, looks like a conventional hook, features a rather optimized and refined hook claw shape and is quite lightweight.

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