Surgery – Truss – Pad
Patent
1989-05-04
1991-05-07
Hindenburg, Max
Surgery
Truss
Pad
604 44, A61B 1000
Patent
active
050128183
ABSTRACT:
A novel biopsy needle like surgical instrument to obtain both solid bone marrow biopsy and liquid bone marrow aspirate by a new method of obtaining both specimens in a single procedure are disclosed. The needle consists of two heads at the proximal end, two lumina inside its elongated body and two distal openings. Each head contains portal for entry for respective stylets for biopsy and aspiration. The distal end of the needle contains two openings leading to the lumina inside the needle meant for biopsy and aspiration respectively. The proximal one third of the needle is encased in a specially designed handle with grips for the index finger, the thumb and a cap for the hollow of the operators hand.
Upon insertion of the needle in the cortical bone of the iliac crest of the patient the biopsy stylet is withdrawn. Further pushing the needle results in entry of the marrow cavity facilitating entry of a solid core of marrow in the hollow biopsy portion of needle lumen. Without disturbing the needle, the aspiration stylet is withdrawn. Fixing a luer neck syringe to the portal of the aspiration head, liquid marrow can be aspirated with negative pressure from the aspiration lumen. The procedure is completed on withdrawing the needle and expressing the solid core of marrow biopsy using the biopsy probe. Thus, a solid core of marrow specimen and liquid sample of marrow aspirate are obtained with a single entry into the bone.
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patent: 4531935 (1985-07-01), Berryessa
patent: 4808157 (1989-02-01), Coombs
patent: 4840184 (1989-01-01), Garg
patent: 4850373 (1989-07-01), Zatloukal et al.
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