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Methods and devices for automated biopsy and collection of soft tissue

  • US 20010007925A1
  • Filed: 12/13/2000
  • Published: 07/12/2001
  • Est. Priority Date: 03/24/1994
  • Status: Abandoned Application
First Claim
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1. A biopsy instrument, comprising:

  • an outer hollow cannula having a distal end portion which is capable of piercing tissue; and

    an inner member having a distal portion which is biased to expand radially at its distal end, and which is capable of cutting and severing tissue;

    wherein at least one of said outer hollow cannula and said inner member is slidable relative to the other of the outer hollow cannula and the inner member so that first the inner member may be extended distally with respect to the outer cannula, such that said inner member distal portion expands radially to capture a tissue sample, and then the outer cannula may be extended distally with respect to the inner member sufficiently so that the distal end portion of the inner member is forced by the outer cannula to close about and sever the tissue sample, thereby containing the sample within the inner member.

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