Biopsy instrument with improved needle penetration

Surgery – Diagnostic testing – Sampling nonliquid body material

Reexamination Certificate

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Details

C600S562000, C600S567000, C600S568000, C606S167000, C606S168000, C606S169000, C606S170000, C606S171000, C606S172000, C606S180000, C606S184000, C606S185000, C604S022000

Reexamination Certificate

active

07470237

ABSTRACT:
The present invention provides a biopsy instrument with improved needle penetration for piercing dense tissue. The device may comprise a needle slidably retained in a housing. The device may further comprise an actuation member that may be adapted to communicate 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 be fired multiple times to create repeating reciprocal motion. In one version, the device may reciprocate several times as a result of a single engagement of the actuation member.

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