초록 ▼

A biopsy needle, suitable for obtaining bone marrow biopsy cores, includes an outer tube member having a lumen extending therethrough, and at a distal end of the outer tube member an opening is provided for receiving a biopsy core. At the distal end, the outer tube member is generally oval in cross-

A biopsy needle, suitable for obtaining bone marrow biopsy cores, includes an outer tube member having a lumen extending therethrough, and at a distal end of the outer tube member an opening is provided for receiving a biopsy core. At the distal end, the outer tube member is generally oval in cross-section and thereby has an elongated dimension and a narrow dimension. An inner tube member is slidable and rotatable in the lumen of the outer tube member and has a set of pincers at its distal end. With the inner tube member slid through the lumen of the outer tube member and the pincers positioned at the distal end of the outer tube member and aligned with the elongated dimension, the pincers are in an open position. However, the pincers can be closed thereby to grasp and cut a biopsy core by rotating the inner tube member so that the pincers are aligned with the narrow dimension of the outer tube member. In another embodiment of the biopsy needle, the distal end of the outer tube member has two spaced apart projections extending in the lumen, and by cooperation with these projections, the pincers of the inner tube member can be opened or closed to grasp a biopsy core.

대표청구항 ▼

[ What is claimed is:] [1.] A biopsy needle for removing a biopsy core from a patient, said biopsy needle comprising:an outer tube member having a lumen therein, a proximal end and a distal end with an opening at the distal end for receiving a biopsy core, and oppositely disposed projections extendi

[ What is claimed is:] [1.] A biopsy needle for removing a biopsy core from a patient, said biopsy needle comprising:an outer tube member having a lumen therein, a proximal end and a distal end with an opening at the distal end for receiving a biopsy core, and oppositely disposed projections extending radially inward from said lumen and proximate the distal end;an inner tube member adapted to be slidable in said lumen of said outer tube member and having pincers at a distal end thereof, said inner tube member rotatable in said lumen, and by rotation thereof said pincers contact said oppositely disposed projections and thereby close upon each other to grasp a biopsy core.