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For delicate suturing, the needle with an eye was larger at the head than in the shaft and so produced an aperture in the skin that was needlessly large. But its life was good for several threads. To overcome the major defect, the thread was inserted in the body of the needle, allowing shaft and head to be of one thickness. But the life of the needle was then the life of one thread.
The needle here portrayed, of my design, readjusts the balance. The problem of dimension is solved by retaining the thread enclosed in the needle body. But when the thread has been used it may be discarded together with the fitting that holds it by the simple process of unscrewing that fixture. Another thread, with similar screw attachment, is then substituted, and the suturing goes on, without the needle even being withdrawn. This is repeated as
Sheehan JE. SOLUTION OF THE NEEDLE AND THREAD PROBLEM. JAMA. 1936;107(15):1213. doi:10.1001/jama.1936.92770410002008a