초록 ▼

Instruments for performing percutaneous biopsy procedures are disclosed, which have advantageous features for improving functionality and performance over prior art devices. These instruments comprise two types, single-use devices, and multiple-use devices having active tissue capture capability. Im

Instruments for performing percutaneous biopsy procedures are disclosed, which have advantageous features for improving functionality and performance over prior art devices. These instruments comprise two types, single-use devices, and multiple-use devices having active tissue capture capability. Improved features include the ability to retrieve and evaluate multiple tissue samples during a single insertion procedure, without physical handling of the samples, as well as constructional features, such as a molded tissue cassette housing, variant vacuum port embodiments suited for different tissue environments, and a method for backflushing the instrument to remove biological debris, among others.

대표청구항 ▼

A biopsy instrument comprising: a housing; and a needle assembly, said needle assembly comprising: a tubular piercing member having a distal pointed end, and a laterally positioned tissue receiving port proximate to said distal pointed end which opens into a tissue sample chamber; a cannular cutting

A biopsy instrument comprising: a housing; and a needle assembly, said needle assembly comprising: a tubular piercing member having a distal pointed end, and a laterally positioned tissue receiving port proximate to said distal pointed end which opens into a tissue sample chamber; a cannular cutting member adapted to coact with said tubular piercing member to cut a tissue sample from the tissue mass such that the tissue sample can be transported to a proximate end of said tubular piercing member by the cutting member as it is withdrawn proximally along said tubular piercing member; and an elongate knock-out pin disposed coaxially within said tubular piercing member and said cannular cutting member and being adapted to dislodge said tissue sample from the cutting member at a predetermined location as the cutting member is withdrawn; and a rotatable retaining fixture for rotatably attaching said tubular piercing member and said housing whereby said tubular piercing member may be selectively rotated relative to the housing to dispose said laterally positioned tissue receiving port to any desired angular orientation.