Abstract: A method for constructing a vascular connector configured to bypass an occluded vessel which comprises a primary graft stem and a venous outflow stem. In general, the primary graft stem accepts a blood flow from an occluded vessel to bypass the occlusion. The venous outflow stem may extend from a wall of the primary graft stem and divert a portion of the blood flow to a native vein or other vessel of the vascular system. This configuration is beneficial in ensuring adequate blood flow at the vascular connector to inhibit the formation of clots and to extend the patency of the vascular connector.

Abstract: A vascular filter system and method are disclosed. In one embodiment, the filter system comprises a dispensing needle releasably attached to a filter dispenser which stores a length of filter wire. The filter wire dispenser has a guide tube which guides the filter wire into the needle and then into a vein during surgical implantation. The filter wire is configured to coil into a predetermined shape as it is deployed from the needle. The shape of the filter wire captures blood clots in the blood stream. Once the filter wire is deployed, the needle may be removed and a portion of the filter wire may be left protruding from the patient's skin surface to allow the filter wire to be secured by a fixation device. A syringe may be used to draw blood to confirm that the needle is properly positioned within a vein before the filter wire is deployed.

Abstract: A vascular filter system and method are disclosed. In one embodiment, the filter system comprises a dispensing needle releasably attached to a filter dispenser which stores a length of filter wire. The filter wire dispenser has a guide tube which guides the filter wire into the needle and then into a vein during surgical implantation. The filter wire is configured to coil into a predetermined shape as it is deployed from the needle. The shape of the filter wire captures blood clots in the blood stream. Once the filter wire is deployed, the needle may be removed and a portion of the filter wire may be left protruding from the patient's skin surface to allow the filter wire to be secured by a fixation device. A syringe may be used to draw blood to confirm that the needle is properly positioned within a vein before the filter wire is deployed.

Abstract: A vascular filter system and method are disclosed. In one embodiment, the filter system comprises a dispensing needle, a guidewire and a catheter releasably attached to a filter dispenser which stores a length of filter wire. The filter wire dispenser has a guide tube which guides the filter wire into the catheter and then into a vein during surgical implantation. The filter wire is configured to form into a predetermined shape as it is deployed from the needle. The shape of the filter wire captures blood clots in the blood stream. The filter wire may be configured with a perforated section and a non-perforated section. Perforations are in fluid communication with an inner hollow lumen in the filter wire.

Abstract: A vascular bypass graft having a primary member and a secondary member is disclosed. The secondary member extends from a distal second end of the primary member and has a common fluid pathway there between. The secondary member may have a flared or diffused proximal first end that facilitates low pressure fluid return and may be integrally formed with the primary member. An adjustable or fixed stenosis is provided in the secondary member which allows the fluid flow through the vascular bypass graft to be modified. The stenosis may be adjusted either manually or by way of a controller. The primary member is surgically connected to a patient's vascular system to provide an alternate route for blood flow around a vascular occlusion. The secondary member is surgically connected to another point in the vascular system to allow continuous circulation of blood through the graft thereby preventing clotting and graft failure.

Abstract: A vascular filter system and method are disclosed. In one embodiment, the filter system comprises a dispensing needle releasably attached to a filter dispenser which stores a length of filter wire. The filter wire dispenser has a guide tube which guides the filter wire into the needle and then into a vein during surgical implantation. The filter wire is configured to coil into a predetermined shape as it is deployed from the needle. The shape of the filter wire captures blood clots in the blood stream. The filter wire is configured with a perforated section and a non-perforated section. Perforations are in fluid communication with an inner hollow lumen in the filter wire. A hub assembly attaches to an end of the filter wire that is external to the body to provide a port into the lumen for application of medication into the lumen and out the perforations.

Abstract: A self adjusting venous equalizing graft (SAVE graft) which provides a self regulating stenosis is provided herein. The SAVE graft responds to increases or decreases in blood pressure which allows a higher pressure at the graft's arterial end and a lower pressure at the graft's venous end. This is ideal in that it mimics the natural pressure of a patient's circulatory system. A dialysis machine may draw blood at the arterial end, dialyze the blood, and return the blood to the patient at the graft's venous end. The lower pressure at the venous end prevents damage to the patient's vein. The SAVE graft may comprise a deformable stenosis control diaphragm or a venous controlled pressure nozzle which may expand or contract in response to blood pressure to self regulate the stenosis provided by the SAVE graft.

Abstract: A method for constructing a vascular connector configured to bypass an occluded vessel which comprises a primary graft stem and a venous outflow stem. In general, the primary graft stem accepts a blood flow from an occluded vessel to bypass the occlusion. The venous outflow stem may extend from a wall of the primary graft stem and divert a portion of the blood flow to a native vein or other vessel of the vascular system. This configuration is beneficial in ensuring adequate blood flow at the vascular connector to inhibit the formation of clots and to extend the patency of the vascular connector.

Abstract: An improved vascular graft having increased patency is disclosed herein. The graft may comprise a central or other stenosis. In addition, in some embodiments, the graft may comprise an internal reservoir and a collapsible portion configured to self-adjust the stenosis based on blood flow pressure. The graft may comprise an endothelial lining, one or more drug eluting materials, or both to increase patency by respectively reducing clots and preventing unwanted cellular or fibrin growth. The endothelial lining may be formed from one or more endothelial cells artificially grown or harvested from a patient's vascular system.

Abstract: An endothelial scaffold may used to form a graft with an endothelial lining or endothelium. The scaffold allows a natural vessel or other endothelial lumen to line a channel of the scaffold to provide an endothelial layer which enhances blood flow through the channel. The channel may have a narrowed section to provide a stenosis. One or more conduits may extend from an exterior portion of the scaffold to an inner surface of the channel. Air may be withdrawn from between the natural vessel and inner surface of the channel via the conduits to cause the endothelial lumen to conform to the inner surface of the channel. A valve may be used to prevent air from reentering the conduits. The graft, including the endothelial lumen, may be implanted into a patient.

Abstract: A vascular filter system and method are disclosed. In one embodiment, the filter system comprises a dispensing needle releasably attached to a filter dispenser which stores a length of filter wire. The filter wire dispenser has a guide tube which guides the filter wire into the needle and then into a vein during surgical implantation. The filter wire is configured to coil into a predetermined shape as it is deployed from the needle. The shape of the filter wire captures blood clots in the blood stream. The filter wire is configured with a perforated section and a non-perforated section. Perforations are in fluid communication with an inner hollow lumen in the filter wire. A hub assembly attaches to an end of the filter wire that is external to the body to provide a port into the lumen for application of medication into the lumen and out the perforations.

Abstract: The present invention provides an apparatus and method for optimizing flow in an A-V dialysis graft having a selectable constricted section. Electronic pressure and flow sensors in the arterial and venous ends of the graft are electronically coupled to a monitor to detect the arterial and venous environments and change the degree of stenosis to optimize flow. The stenosis or narrowing within the graft creates resistance for the purpose of decreasing the flow rate and pressure at the outflow end. The selectable restricted section may be provided by a balloon or a thin “slit” type valve with flexible leaves to provide the required resistance. The “slit” valve allows access to wires or catheters for the purpose of any type of graft maintenance.

Abstract: A therapeutic back support device is disclosed which has adjustable curvature and portable thermal application. The back support device allows the user to change the curvature of the device to conform to the individual user's spine. The back support device includes include a support rib covered on one or more sides by padding. Built into the rib, padding, or both is a pocket or recess configured to accept a thermal cell. The thermal cell provides a heating or cooling cell to be placed within the pocket to thereby present heat or cold therapy to the user. On the back of the to device are one or more straps which may be length adjustable to maintain any degree of arch in the back support device.

Abstract: A therapeutic back support device is disclosed which has adjustable curvature and portable thermal application. The back support device allows the user to change the curvature of the device to conform to the individual user's spine. The back support device includes include a support rib covered on one or more sides by padding. Built into the rib, padding, or both is a pocket or recess configured to accept a thermal cell. The thermal cell provides a heating or cooling cell to be placed within the pocket to thereby present heat or cold therapy to the user. On the back of the to device are one or more straps which may be length adjustable to maintain any degree of arch in the back support device.

Abstract: A vascular connector configured to bypass an occluded vessel comprises a primary graft stem and a venous outflow stem. In general, the primary graft stem accepts a blood flow from an occluded vessel to bypass the occlusion. The venous outflow stem may extend from a wall of the primary graft stem and divert a portion of the blood flow to a native vein or other vessel of the vascular system. This configuration is beneficial in ensuring adequate blood flow at the vascular connector to inhibit the formation of clots and to extend the patency of the vascular connector.

Abstract: An adjustable stenosis provides a channel comprising an outer wall and an inner wall. The inner wall may comprise resiliently flexible material. A reservoir may be formed by the outer wall and inner wall. The flexibility of the inner wall allows the reservoir to expand into the channel to increase stenosis and to contract toward the outer wall to decrease stenosis. The reservoir may have a default expanded shape or a default contracted shape. The default shape may be maintained unless the pressure or amount of filler material in the reservoir is manipulated. The reservoir may have one or more chambers. The channel may be attached to a natural lumen or a graft or may be placed around the lumen or graft.