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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Together with his sons he founded a company in 1849; within a short amount of time it became globally successful and expanded rapidly. More than 865,000 bentwood chairs per year were produced in today's Czech Republic, Hungary, and Russia. Michael Thonet died in Vienna in 1871; his sons then took over the company. During the 1930s, Thonet was committed to the construction and technology of tubular steel furniture and quickly became the largest manufacturer in the world.