Biopsy device
OwnerWilliam C. Alleninventor
Life of this patent
Estimating the term…
Abstract
A biopsy device for obtaining biopsy specimens from hard or soft tissue includes a biopsy extracting member which may be inserted into a cannula and a removable biopsy specimen holder which is preferably threaded into the biopsy extracting member. The specimen holder preferably includes a cutting edge (e.g., serrated for hard tissue, slicing for soft tissue), and retaining fishscales or scallop members for securely holding The biopsy specimen. Once the biopsied specimen is cut from the tissue, it may be sent, within the removable specimen holder, to the pathologist for analysis.
Claims20
A biopsy device comprising:
- a biopsy extracting member having a hollow interior portion and a substantially smooth generally cylindrical exterior whereby it may closely slidingly fit within a generally cylindrical cannula;
- and
- a biopsy specimen holder removably attached to one end of said biopsy extracting member, said specimen holder including an elongated tubular specimen receiving portion which is open at both ends, a portion which fits within and engages said extracting member, and a cutting portion which extends from said one end of said biopsy extracting member;
- whereby when said specimen holder is detached from said biopsy extracting member a pusher member having an elongated generally cylindrical shape and being sized to closely slidingly fit within said specimen receiving portion of said specimen holder may be used to remove any biopsy specimen contained within said specimen holder without opening said specimen holder.
In a kit for obtaining biopsy specimens of the type including a generally cylindrical cannula, and a sharply pointed starter trocar adapted to closely slidingly fit within the cannula, the improvement comprising:
- a biopsy extracting member having a hollow interior portion and a substantially smooth generally cylindrical exterior to closely slidingly fit within the cannula;
- and
- a biopsy specimen holder removably attached to one end of said biopsy extracting member, said specimen holder including an elongated one-piece tubular specimen receiving portion which is open at both ends, a portion which fits within and engages said extracting member, and a cutting portion which extends from said one end of said biopsy extracting member.
An apparatus for obtaining hard tissue biopsy specimens comprising:
- a holding member having a substantially smooth exterior surface of circular cross section whereby it may closely slidingly fit within a generally cylindrical cannula and a generally cylindrically shaped hollow interior portion extending into said holding member from one end thereof, and
- a biopsy specimen holder having a generally cylindrically shaped hollow specimen receiving portion which is open at both ends and a portion which fits within and engages said hollow interior portion of said holding member so that said specimen holder is removably attachable to said holding member, whereby when said specimen holder is detached from said holding member a pusher member having an elongated generally cylindrical shape and being sized to closely slidingly fit within said specimen receiving portion of said specimen holder may be used to remove any biopsy specimen contained within said specimen holder without opening said specimen holder.
Dependencies are inferred from the claim text.