| 摘要 |
A tissue or foreign body extractor. A coil member is provided, and in one embodiment of the invention, is disposed within the lumen of a needle. The needle includes one or more cutting edges for cutting into tissue located in the body, a core of the tissue being received in the lumen. The coil member is connected to an elongate shaft that extends through the lumen of the needle for remotely operating the coil member Turning the shaft threads the coil member into the core. Thereafter, retracting the shaft tears the core at its juncture with the remaining mass of tissue or foreign body, and withdraws the core from its locus in the body.
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