FIELD: medicine.
SUBSTANCE: invention relates to medicine and can be applied for self-massage. Finger expander contains ring, resistance element in form of Archimedes spiral, additional ring is located in the centre of spiral, with both rings being located on one plane.
EFFECT: device improves possibilities of physical exercise regulation.
5 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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|
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|
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| HAND MASSAGER AVAN N 20-13 | 2012 |
|
RU2520046C2 |
