Abstract: A method for forming a needle assembly is provided. A distal portion of the needle can be formed of a first material which does not interfere with MRI imaging of a tissue receiving port disposed in the distal needle portion. A proximal needle portion can be formed of a second, different material, such as a metal. The proximal needle portion can provide strength and stiffness.

Abstract: A biopsy device which is compatible for use with a magnetic resonance imaging machine. The device includes a non-metallic elongated substantially tubular needle having a distal end for insertion within tissue, a proximal end, and a longitudinal axis therebetween. The needle includes right and left members on either side of the longitudinal axis, where the right and left members each have upper and lower ends including a series of alternating male and female portions. The male portions of the right member mate with the female portions of the left member, and the male portions of the left member mate with the female portions of the right member to securely attach the two members together. The device further includes a port on the elongated needle for receiving a tissue sample.

Abstract: A biopsy device which is compatible for use with a magnetic resonance imaging machine. The device includes a non-metallic elongated substantially tubular needle having a distal end for insertion within tissue, a proximal end, and a longitudinal axis therebetween. The needle comprising right and left members on either side of the longitudinal axis, wherein the right and left members each having upper and lower ends comprising a series of alternating male and portions. The male portions of the right member mate with the female portion of the left member, and the male portions of the left member mate with the female portions of the right member to securely attach the two members together. He device further includes a port on the elongated needle for receiving a tissue sample.