Abstract:
PROBLEM TO BE SOLVED: To provide a dialyzer having an improved dialyzate perfusion to fiber bundles. SOLUTION: A dialyzer is provided comprising a casing defining an interior and including a dialysate inlet 30 and a dialysate outlet. A plurality of fibers are located in the interior of the casing and define a fiber bundle 26. A dialysate inlet fluid channel is provided in fluid communication with the dialysate inlet and includes a plurality of flutes 50 that extend into a portion of the fiber bundles 20, the flutes 50 define an opening for allowing dialysate to flow from the inlet fluid channel into the interior of the casing. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
A dialysis system instrument includes a dialysis instrument (10), a disposable pumping and valving cassette apparatus (30) operable with pumping and valving actuators of the dialysis instrument, the disposable cassette (50) including an electronic cell (100c) and electronics associated with the electronic cell, the electronics configured to determine an electrical property of a solution flowing through the electronic cell of the disposable apparatus.
Abstract:
A dialysate testing method in one embodiment includes placing electrical contacts in a dialysate flow path, measuring an electrical property of the dialysate as it flows through the flow path and past the contacts, and determining whether the dialysate has been mixed properly from the detected electrical property. A dialysate testing method in another embodiment includes flowing dialysate past a pair of electrical contacts, calculating a conductivity of the dialysate using an algorithm that takes into account a geometry of the contacts, and using the calculated conductivity to determine if the dialysate has been removed properly.
Abstract:
A reconstitution device is disclosed and includes a first container receiver having a first component cannula disposed therein, the first component cannula having a withdrawal port and a first transfer port formed thereon, a second container receiver having a second component cannula disposed thereon, the second component cannula having a vent port and a second transfer port formed thereon, a device body coupling the first container receiver to the second container receiver and having a transfer lumen formed therein, the transfer lumen in fluid communication with the first and second transfer ports, a selectively sealing interface secured to the device body and in fluid communication with the withdrawal port, and a venting member in communication with the vent port through a vent lumen.
Abstract:
A dialysate testing method in one embodiment includes placing electrical contacts in a dialysate flow path, measuring an electrical property of the dialysate as it flows through the flow path and past the contacts, and determining whether the dialysate has been mixed properly from the detected electrical property. A dialysate testing method in another embodiment includes flowing dialysate past a pair of electrical contacts, calculating a conductivity of the dialysate using an algorithm that takes into account a geometry of the contacts, and using the calculated conductivity to determine if the dialysate has been removed properly.
Abstract:
A dialysis system instrument includes a dialysis instrument (10), a disposable pumping and valving cassette apparatus (30) operable with pumping and valving actuators of the dialysis instrument, the disposable cassette (50) including an electronic cell (100c) and electronics associated with the electronic cell, the electronics configured to determine an electrical property of a solution flowing through the electronic cell of the disposable apparatus.
Abstract:
A dialysis fluid heating system includes a plurality of conductive tubes; first and second end caps located at first and second ends of the tubes, respectively, the first end cap including a dialysis fluid inlet and a dialysis fluid outlet, the end caps and the tubes configured such that dialysis fluid can flow from the fluid inlet of the first end cap, through at least one first tube to the second end cap, and through at least one second tube back to the first end cap; a conductive wire wound around an outside of the conductive tubes; and electronics configured to supply power to the conductive wire, the wire forming a primary coil of a transformer, the tubes forming a secondary coil of the transformer.
Abstract:
A reconstitution device is disclosed and includes a first container receiver having a first component cannula disposed therein, the first component cannula having a withdrawal port and a first transfer port formed thereon, a second container receiver having a second component cannula disposed thereon, the second component cannula having a vent port and a second transfer port formed thereon, a device body coupling the first container receiver to the second container receiver and having a transfer lumen formed therein, the transfer lumen in fluid communication with the first and second transfer ports, a selectively sealing interface secured to the device body and in fluid communication with the withdrawal port, and a venting member in communication with the vent port through a vent lumen.
Abstract:
A dialyzer is provided comprising a casing defining an interior and including a dialysate inlet and a dialysate outlet. A plurality of fibers are located in the interior of the casing and define a fiber bundle. A dialysate inlet fluid channel is provided in fluid communication with the dialysate inlet and includes a plurality of flutes that extend into a portion of the fiber bundles, the flutes define an opening for allowing dialysate to flow from the inlet fluid channel into the interior of the casing. Methods of providing dialysis are also provided.
Abstract:
An optical access disconnect system (10) is useful for detecting the presence of blood. The optical access disconnect system includes one or more optical sensors (14) placed near an access site of a patient, the optical sensors suitable for detecting the presence of blood, especially by detecting a difference in light reflected or absorbed by blood. The optical access disconnect system may also be used as an interlock to assure compliance. A detector may be placed adjacent the access site to detect the access needle, or an object or mark on the access needle or fluid line. A therapy machine, such as a dialysis machine, may be programmed not to start or continue operation unless the needle or.fluid line is detected. The detector may be one of the optical sensors, calibrated or adjusted to detect a mark on the needle or access line, or may be another type of detector.