A voucher is a bond of the redeemable transaction type which is worth a certain monetary value and which may be spent only for specific reasons or on specific goods.
In 1985 a robot, the Unimation Puma 200, was used to place a needle for a brain biopsy using CT guidance. In 1992, the PROBOT, developed at Imperial College London, was used to perform prostatic surgery by Dr. Senthil Nathan at Guy's and St Thomas' Hospital, London. This was the first pure robotic surgery in the world.
The first open heart surgery was not performed by Vivien Thomas and Alfred Blalock (in 1944), as mentioned in the previous post. In 1902 Dr. Luther Leonidas Hill performed the â¦ first open heart surgery in the Western Hemisphere by suturing a stab wound in a young boy's heart.he first open heart surgery was not performed by Vivien Thomas and Alfred Blalock (in 1944), as mentioned in the previous post. In 1902 Dr. Luther Leonidas Hill performed the â¦ first open heart surgery in the Western Hemisphere by suturing a stab wound in a young boy's heart.