| 摘要 |
A therapeutic device for alleviating mid-to-upper back pain. The device comprises a hard cylindrical body wrapped in a cushioning sleeve. The sleeve is sufficiently firm to resist deforming, thereby maintaining its round shape and enabling it to roll easily along the ground. At the same time, the sleeve comfortably supports the user and transfers the force of the hard inner element to the user's back muscles and joints without causing pain or injury. The device can be used by individuals suffering from mid-to-upper back pain associated with muscle spasms, soreness, or injury. The device enables the individual to self-administer therapy to the back muscles and joints to relieve back pain and reduce the likelihood of future incidences of pain.
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