| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a biopsy instrument with improved needle penetration for piercing dense tissue. <P>SOLUTION: The device may comprise a needle slidably retained in a housing. The device may further comprise an actuation member that may be adapted to transmit longitudinal motion to the needle in a first direction. The device may further include a propulsion element that provides the needle with return motion in a second direction. The device may create reciprocal motion of the needle by inserting the needle repeatedly. In one version, the device may reciprocate the needle several times as a result of a single engagement of the actuation member. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
