| abstract |
According to an aspect of the present invention, a medical device (100) is provided, which comprises the following: (a) a hollow elongate body (110) (e.g., a elongate cylinder, such as a needle) having distal and proximal ends; and (b) a rotatable member (120) comprising a tissue morselizer (120m) and an elongate shaft (120s) (e.g., an auger-like tissue-drilling bit). In the device of the present invention, the elongate shaft is disposed within the hollow elongate body and cooperates with the hollow elongate body to (i) advance material (e.g., morselated tissue) toward the proximal end of the hollow elongate body when the shaft is rotated in a first direction, and (ii) advance material (e.g., a therapeutic agent and/or a bulking agent) toward the distal end of the hollow elongate body when the shaft is rotated in a second direction that is opposite the first direction. |