Device for facilitating end-to-side anastomosis

摘要

The present invention provides a device and method for creating a seal around the inner wall of an incision in a blood vessel. The device is particularly adapted to create an anastomosis site for coronary artery bypass grafts to a patient's aorta without obstructing the flow of blood in the aorta. The device comprises an extruded tube with a translatable shaft positioned therein. One end of the shaft is coupled to a handle of the device which allows a practitioner to advance and withdraw the shaft relative to the tube. The other end of the shaft is connected to a flexible inverting member which is attached to the distal end of the tube. By manipulating the handle, the practitioner can remotely deform the inverting member between two configurations: an elongated, narrow configuration in which the inverting member is adapted to be inserted through a small incision, and an inverted configuration in which the inverting member forms an expanded, inward-facing cup. In operation, the medical practitioner inserts the inverting member into the blood vessel through an incision while the inverting member is maintained in its elongated, narrow configuration, and then manipulates the handle to cause the inverting member to assume its inverted configuration. A seal is then formed by applying a proximal force to the device to cause a rim of the cup to form a seal against an inner wall of the blood vessel. This prevents blood from flowing out of the incision and creates a working area for performing an end-to-side anastomosis. The working area is formed without interrupting the flow of blood through the vessel. The device preferably includes a hole punch device slidably mounted to the tube for allowing the practitioner to create an anastomosis hole once the seal has been formed.