Disposable Marrow Aspiration Biopsy Needle

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Manufacture and evaluate the prototype of an one-step-needle for bone marrow aspiration and bone biopsy. Material and methodology: consisted in the following steps, functional prototype manufacturing, puncture testing in vitro and a comparative study for similar devices. Results: we obtained the pattern of the geometric dimensions and determined appropriate changes that can occur when coupling device for better ergonomie and optimum handling.

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Disposable marrow aspiration biopsy needle

The technique for examination of the bone marrow by aspiration is widely used in the investigation and diagnosis of haematological as well as nonhaematological malignant conditions. However, with conventional bone marrow aspiration needles, sampling error remains a major problem and pathological lesions may be missed when the marrow is not involved uniformly. To overcome this, an instrument has been designed which should reduce the chances of failure in cell aspiration in small focal infiltrates. The needle has been designed to obtain bone marrow samples from the posterior iliac crests. In addition to the opening at the end of the needle there are 14 side holes in the 17.5 mm distal portion of the needle. The tip of the stilette and the needle have been designed for easy penetration of the soft tissue as well as the bony cortex and resharpening after each use is not necessary. The proximal end of the needle has been fitted with a large metal bar allowing a firm grip and has a smooth handle for operator comfort.

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