Visually assisted entry of a fluid delivering needle with a tapered videoscope
摘要:
A Veress needle is modified to receive a forward-looking miniature videoscope through the lumen of an insufflation tube of the Veress needle. The modified instrument enables direct viewing of progress of the instrument through tissue to the peritoneal cavity of a patient, for proper location of the needle and insufflation of the cavity via the needle. The videoscope has an elongated shaft of smaller diameter than the lumen of the insufflation tube for passage of insufflation gas with the scope in place. In another embodiment a needle is fitted with a miniature videoscope to provide the same function, with the needle's lumen serving as an insufflation tube.
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