| 摘要 |
An apparatus for use in the percutaneous placement of a medical device, such as a tracheostomy tube. An elongated hollow tube (14) has an inflatable dilator balloon (12) mounted thereon. The balloon comprises a distal portion (16), an intermediate portion (17) and a proximal portion (18). The medical device is carried on the intermediate portion. At least a segment of the distal portion has an inflated outer diameter that is at least as large as t he outer diameter of the medical device. The inflated outer diameter of the intermediate portion is sized relative to an internal diameter of the medica device to hold the medical device thereon. An inflation assembly (49) is provided to enable the balloon to be selectively inflated and deflated. A bo dy opening is dilated with the inflated dilator balloon, and the medical device may be percutaneously placed across the dilated opening. Following placement of the device, the dilator balloon may be deflated and withdrawn from the device through a lumen of the medical device.
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