摘要:
Apparatus and methods are provided for use in sealing a vascular puncture site. The invention comprises an introducer sheath with an integrated closure component. The closure component includes a fastener and an advanceable, deformable clip having a delivery configuration in which opposing sides do not contact one another, and a deployed configuration, in which the fastener causes opposing sides of the deformable clip to close towards one another. The clip is advanced along the sheath until it pierces opposing sides of a vessel wall at a puncture site. The clip is then deformed with the fastener to draw opposing sides of the puncture together, and the sheath is withdrawn to seal the wound. The clip and fastener preferably are bioabsorbable.
摘要:
This invention relates to apparatus and methods for use in sealing a vascular puncture site and to apparatus and methods for properly locating and deploying a sealing device. The locating apparatus comprises a lumen which extends from an opening in the distal region of the apparatus but located proximally of the sealing device, which lumen extends to another opening in the proximal region of the device. When the distal opening is in communication with blood in a blood vessel, blood flow through the lumen and out of the proximal opening signifies such location to the user. When the sealing device is withdrawn such that the sealing device is deployed such that it blocks the blood flow into the distal port, the user will know the location of the sealing device. In a preferred embodiment, the sealing device is then withdrawn proximally a predetermined distance to assure that no part of the sealing device extends into the blood vessel lumen. The sealing device is then detached from the delivery device.
摘要:
A minimally invasive technique for harvesting saphenous veins and the like for use as autografts in coronary artery bypass grafting surgery include a microsurgical instrument adapted to be demountably secured to the distal end of an endoscope. The instrument is inserted through an entry incision in the patient's skin, at the end of the endoscope which is used by a surgeon to advance the instrument along the saphenous vein, using the vein as a guide for the instrument. The instrument is tapered to provide initial separation of surrounding tissues from the vein, and cutting means supported by the instrument and viewed via the endoscope allow dissection of all tissues and side branch vessels from the saphenous vein. The instrument further provides a protective hood which prevents tissues or skin from blocking the endoscope. The desired length of saphenous vein is transected and is extracted via the entry incision. The technique minimizes trauma to the patient and to the saphenous vein graft.
摘要:
A minimally invasive technique for harvesting saphenous veins and the like for use as autografts in coronary artery bypass grafting surgery include a microsurgical instrument adapted to be demountably secured to the distal end of an endoscope. The instrument is inserted through an entry incision in the patient's skin, at the end of the endoscope which is used by a surgeon to advance the instrument along the saphenous vein, using the vein as a guide for the instrument. The instrument is tapered to provide initial separation of surrounding tissues from the vein, and cutting means supported by the instrument and viewed via the endoscope allow dissection of all tissues and side branch vessels from the saphenous vein. The instrument further provides a protective hood which prevents tissues or skin from blocking the endoscope. The desired length of saphenous vein is transected and is extracted via the entry incision. The technique minimizes trauma to the patient and to the saphenous vein graft.
摘要:
Prosthetic valves and their component parts are described, as are prosthetic valve delivery devices and methods for their use. The prosthetic valves are particularly adapted for use in percutaneous aortic valve replacement procedures. The delivery devices are particularly adapted for use in minimally invasive surgical procedures.
摘要:
Prosthetic valves and their component parts are described, as are prosthetic valve delivery devices and methods for their use. The prosthetic valves are particularly adapted for use in percutaneous aortic valve replacement procedures. The delivery devices are particularly adapted for use in minimally invasive surgical procedures.
摘要:
Occlusion devices and methods for occluding fallopian tubes which take effect promptly after deployment. The occlusion means comprise an occluding element and a fixation element. In one embodiment, the occluding element is deployed within the fallopian tube and in another embodiment, the occluding element is external to the fallopian tube.
摘要:
A delivery system having a steerable delivery device and an elastic clip for treating an internal tissue defect, such as septal defects and the like, is provided. The clip can be deformable between a relaxed state and a stressed state and biased towards the relaxed state. The delivery device can include a flexible tubular needle with a lumen for housing the clip while in the stressed state. When used to treat a septal defect, the needle is advancable through overlapping tissue flaps and a pusher member is advancable within the needle lumen to push the clip distally such that one end of the clip is deployed and engages a tissue flap. The needle can then be retracted allowing the clip to deploy over both flaps of tissue, where the biasing force returns the clip to the relaxed state drawing the tissue flaps together and closing the septal defect.
摘要:
A delivery system having a steerable delivery device and an elastic clip for treating an internal tissue defect, such as septal defects and the like, is provided. The clip can be deformable between a relaxed state and a stressed state and biased towards the relaxed state. The delivery device can include a flexible tubular needle with a lumen for housing the clip while in the stressed state. When used to treat a septal defect, the needle is advancable through overlapping tissue flaps and a pusher member is advancable within the needle lumen to push the clip distally such that one end of the clip is deployed and engages a tissue flap. The needle can then be retracted allowing the clip to deploy over both flaps of tissue, where the biasing force returns the clip to the relaxed state drawing the tissue flaps together and closing the septal defect.
摘要:
Prosthetic valves and their component parts are described, as are prosthetic valve delivery devices and methods for their use. The prosthetic valves are particularly adapted for use in percutaneous aortic valve replacement procedures. The delivery devices are particularly adapted for use in minimally invasive surgical procedures.