Abstract: Described are peritoneal dialysis systems and methods that involve the use of crossflow filtration of a used dialysate withdrawn from the peritoneal space of a patient. The filtration forms a retentate containing amounts of an osmotic agent and a permeate containing amounts of water and nitrogen-containing waste products of the patient. The retentate, or a fraction thereof, can be returned to the peritoneal space of the patient to return osmotic agent to the patient. The permeate, or a fraction thereof, can be discarded to discard nitrogen-containing waste products of the patient.

Abstract: Described are peritoneal dialysis systems and methods that involve the use of crossflow filtration of a used dialysate withdrawn from the peritoneal space of a patient. The filtration forms a retentate containing amounts of an osmotic agent and a permeate containing amounts of water and nitrogen-containing waste products of the patient. The retentate, or a fraction thereof, can be returned to the peritoneal space of the patient to return osmotic agent to the patient. The permeate, or a fraction thereof, can be discarded to discard nitrogen-containing waste products of the patient.

Abstract: Described are peritoneal dialysis systems and methods that involve the use of first and second stage filtration of a used dialysate withdrawn from the peritoneal space of a patient. The first filtration stage forms a first retentate containing an osmotic agent and a first permeate containing water and nitrogen-containing waste products of the patient. The second filtration stage acts on the first permeate to form a second retentate containing nitrogen-containing waste products of the patient and a second permeate containing water. At least some of the water from the second permeate is combined with the first retentate to form a regenerated peritoneal dialysis medium containing an amount of the osmotic agent. The regenerated peritoneal dialysis medium can be returned to the peritoneal space of the patient.

Abstract: Compression plate apparatus enables vessels to be joined together in various anastomosis configurations. The compression plates are guided to each other in a parallel orientation by guides. The compression plate apparatus may be utilized with an intraluminally directed anvil apparatus or an externally positioned anvil apparatus. One of the compression plates assists in the eversion of the anastomosis fenestra contour. One of the compression plates enables a graft vessel to be pre-everted so that the anastomosis fenestra contours are everted. The apparatus provides a structure that enables the vessels to be joined without being penetrated.

Abstract: Compression plate apparatus enables vessels to be joined together in various anastomosis configurations. The compression plates are guided to each other in a parallel orientation by guides. The compression plate apparatus may be utilized with an intralumninally directed anvil apparatus or an externally positioned anvil apparatus. One of the compression plates assists in the eversion of the anastomosis fenestra contour. One of the compression plates enables a graft vessel to be pre-everted so that the anastomosis fenestra contours are everted. The appparatus provides a structure that enables the vessels to be joined without being penetrated.

Abstract: The present invention relates to new and useful apparatus, systems and methods for providing an effective tool for intraluminally directed vascular anastomosis of a graft vessel to a receiving blood vessel that is performed according to a minimally invasive procedure. The intraluminally directed vascular anastomosis does not require the interruption of blood flow in the receiving blood vessel and it is versatile enough to suitably combine a variety of cutting, welding, soldering, sealing, and joining techniques. The intraluminally directed anvil apparatus comprises an anvil and a wire used for signaling the optimal anastomosis site; this signaling can be performed when the initial exploration is performed. An anastomosis device is used in conjunction with the intraluminally directed anvil apparatus for opening the anastomosis fenestra and joining the anastomosed structures.

Abstract: Fluid communication between vessels is obtained by joining a vessel with a graft vessel in an end-to-side anastomosis at one end of the graft vessel and by joining another vessel in a side-to-side anastomosis at the other end of the graft vessel. A compression ring device and a concentrically configured operator enable the end-to-side anastomosis to be achieved in an interdigitated configuration while controlling blood flow. A stent enables the side-to-side anastomosis to be achieved.