Percutaneous aspiration lung biopsy needle assembly

Details Percutaneous aspiration lung biopsy needle assembly Percutaneous aspiration lung biopsy needle assembly

1986-10-22

1989-01-24

Hindenburg, Max

Surgery

Truss

Pad

604 51, A61B 1000

Patent

active

047994940

ABSTRACT:
Percutaneous aspiration lung biopsy needle assembly comprises a hollow outer needle in which a second hollow needle of smaller diameter is disposed, the second inner needle being retractable from a first extended position to a second retracted position within the first needle. The inner needle, which extends for only a portion of the distance has a bevelled tip and is constructed such that its outer diameter closely matches the inner diameter of the outer needle. When the inner needle is in its extended position the needle assembly may be forced through the skin and into the lung with relative ease. Subsequently, the inner needle is retracted so that only the flat-tipped duller edged outer needle is exposed, thereby allowing a large tissue sample, suitable for histological examination, to be obtained. A pressure monitor is engaged with the needle apparatus to more accurately determine when lung and tumor entries are achieved. The assembly minimizes the risk of pneumothorax, excessive bleeding and embolism, and additionally allows continuous fluoroscopy of the target site without exposure of the physician's hand to x-rays.

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Kormed, Inc., Brochure: "The Jamshidi Soft-Tissue Biopsy Needle/Syringe", Not Dated.

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