Bone marrow biopsy needle
AssigneesAlan I. Rubinstein, Daniel B. Rubinstein
InventorsAlan Rubinstein, Andrew M. Olah, Emery Olah
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Abstract
A bone marrow biopsy needle includes an outer tube having a lumen extending therethrough which narrows at the distal end of the outer tube. An inner tube is slidable through the lumen of the outer tube and includes a pair of pincers at its distal end. As the inner tube is slid through the lumen of the outer tube, the pincers will encounter the narrowed portion of the lumen and as the pincers extend beyond an opening at the distal end of the outer tube, the pincers close upon themselves, and in this manner the pincers can grasp a biopsy core from bone marrow of a patient. The pincers may have sharpened edges and/or have their edges bent radially inwardly so as to enhance the cutting of the biopsy core from the bone marrow.
Claims12
A bone marrow biopsy needle for removing bone marrow from a patient, comprising in combination:
- an outer tube member having a lumen therein, a proximal end and a distal end and an opening at said distal end, said lumen narrows proximate to the opening;
- and
- an inner tube member adapted to be slidable in said lumen of said outer tube member, said inner tube member having pincers at a distal end thereof, said pincers capable of being slidable in said outer tube member, said pincers capable of closing by flexing relative to said inner tube it and said inner tube slide in the direction from the proximal end to the distal end of said outer tube and engage the narrowed lumen proximate to said opening of said outer tube member, and thereby said pincers being adaptable to grasp a biopsy core when said needle is inserted into the bone marrow of a patient.
Dependencies are inferred from the claim text.