There is a stop-cock between the trocar and syringe, and another at right angles to the syringe. A Manual of the Operations of Surgery Joseph Bell. The operation is performed with a combined instrument called the trocar and cannula.
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Lincoln Rocker. This project takes what I believe is called a Lincoln Rocker & restores the caning in it. There are many challenges in caning a rocker, especially a Lincoln Rocker. Number One on the list is that both seat & back require caning. Number Two is recognizing that the curvature of the rocker back moves in many directions at the same time, curving vertically and horizontally both convex & concave.