The Victoria Hand

Product Description

The Victoria Hand is a body-powered prosthesis consisting of a hand, a wrist, a limb-socket, and a harness. It has a natural appearance and is custom-made to fit each amputee. The hand allows the amputee to perform a range of activities needed. The Victoria Hand closes when activated into an adaptive grasp, allowing users to have a dynamic range of grip strength.

Target Users (Target Impact Group)

Distributors / Implementing Organizations

The Victoria Hand is distributed by these organizations: Range of Motion Project (Guatemala and Ecuador), Nepal Orthopaedic Hospital (Nepal), Agile (Cambodia), Enable International Haiti (Haiti), CoRSU (Uganda), St. Luke's Hospital (Kenya)

Manufacturing/Building Method

Victoria Hands are manufactured at their clinics at Guatemala, Ecuador, Nepal, Cambodia, Haiti, Egypt, Uganda, and Kenya.

Intellectural Property Type

Trademarked

User Provision Model

Users may purchase the Victoria Hand through one of the many distribution partners, through Range of Motion Project (Guatemala and Ecuador), Nepal Orthopaedic Hospital (Nepal), Agile (Cambodia), Enable International Haiti (Haiti), CoRSU (Uganda), St. Luke's Hospital (Kenya).

Distributions to Date Status

Over 120 Victoria Hand have been distributed as of 2019.

Design Specifications

3D scanning is used to capture the unique shape of the individual’s limb, to thereby 3D print a customized socket for that user. Full system solution includes: Hand, Wrist, Socket & Hardness Silicone is used for fingertips to prevent slipping. Rotatable Thumb: The thumb can be rotated by the user allowing it to hold various positions. This includes a one-finger pinch, a two-finger pinch, a power grasp, or a lateral grasp. Backlock Mechanism: The voluntary close (VC) model contains the back-lock mechanism and allows the user to lock the hand closed, for tasks such as carrying bags, or constant grip onto objects. Rotatable Wrist: The wrist contains a ball-and-socket mechanism that allows the user to quickly and easily change the orientation of the hand. This wrist can rotate the hand up to 360 degrees, while simultaneously being flexed or extended by 25 degrees. Adaptive Grasp: The adaptive gripping mechanism makes it easier for your fingers to catch the shape of an oddly shaped object.

There are three different arm prosthesis currently available from the Victoria Hand Project:?

Trans-radial (mid-forearm)
Trans-radial suspension (short-forearm)
Trans-humeral (mid-humerus)

Technical Support

Provided by manufacturer

Replacement Components

None

Lifecycle

5 -10 years

Manufacturer Specified Performance Parameters

Designer specified performance targets include : low-cost, improve user's quality of life especially amputees in developing countries.

Vetted Performance Status

Unknown

Safety

Unknown

Complementary Technical Systems

None

Academic Research and References

Marino, M., Pattni, S., Greenberg, M., Miller, A., Hocker, E., Ritter, S., & Mehta, K., 2015, Access to prosthetic devices in developing countries: Pathways and challenges. In 2015 IEEE global humanitarian technology conference (GHTC), pp. 45-51.

Dechev, N., Cleghorn, W. L., & Naumann, S., 2001, Multiple finger, passive adaptive grasp prosthetic hand. Mechanism and machine theory, 36(10), pp. 1157-1173.

Massa, B., Roccella, S., Carrozza, M. C., & Dario, P., 2002, Design and development of an underactuated prosthetic hand. In Proceedings 2002 IEEE international conference on robotics and automation (Cat. No. 02CH37292), Vol. 4, pp. 3374-3379.

Dalley, S. A., Wiste, T. E., Withrow, T. J., & Goldfarb, M., 2009, Design of a multifunctional anthropomorphic prosthetic hand with extrinsic actuation. IEEE/ASME transactions on mechatronics, 14(6), pp. 699-706.

Millstein, S. G., Heger, H., & Hunter, G. A., 1986, Prosthetic use in adult upper limb amputees: a comparison of the body-powered and electrically powered prostheses. Prosthetics and orthotics international, 10(1),pp. 27-34.

Compliance with regulations

Unknown

Other Information

None