| 摘要 |
An insufflation apparatus includes a housing defining a port for receipt of insufflation gases and an elongated sleeve defining a longitudinal axis. The elongated sleeve has a proximal end and a distal end and defines a sharpened tip. A stylet is disposed within the elongated sleeve. The stylet is movable between an extended position, wherein the stylet extends beyond the tip of the sleeve, and a retracted position, to expose the sharpened tip for penetration through body tissue. At least one of the elongated sleeve and the stylet defines a passageway in fluid communication with the port to direct the insufflation gases into a body cavity. An image sensor is positioned on the elongated sleeve. The image sensor is adapted to receive an optical image of an area adjacent the distal end of the elongated sleeve and is configured to transmit the optical image for viewing by a clinician. |
