Balloninstrument zur Dissektion

摘要

Balloon loaded dissection devices (15) with elongate balloons (16), and a pushing member (20), are disclosed for creating a tunnel alongside an elongate vessel in the body. The devices (15) may utilize an elongate balloon (16) of any suitable length which may be formed of an elastic or non-elastic material. The balloon may be of double walled construction, and may be provided with a central lumen which may receive a guide rod (31), scope or other surgical instrument. The device may have a support tube (22) secured to the inner wall of the balloon to provide columnar support for the apparatus. The support tube may have a transparent shroud (91) attached to a distal end of the support tube. There is an open space between the distal end of the support tube and the end of the shroud allowing access to adjacent tissue. The shroud may perform blunt dissection and/or retraction to clear an open space for viewing or for performing surgical procedures. The support tube receives a scope or other surgical instrument, and may have a stop member to translate pushing force applied to the scope to pushing force on the apparatus. By using the guide rod or scope as a pushing member, the apparatus may be advanced alongside the vessel it is desired to dissect free from attached tissue. A balloon cover (72) which may be elastic or resilient is provided to surround the balloon, and facilitate compression of the balloon after it is deflated.