摘要:
A method and a device to increase the efficiency of dialysis for the removal from blood of substances that are more or less tightly bound to carriers such as albumin. According to the invention this is accomplished by a simultaneous significant increase of the flow rate of the dialysis fluid and of the area of the membrane that separates the blood from the dialysis fluid, compared to conventional dialysis.
摘要:
A method and a device to increase the efficiency of dialysis for the removal from blood of substances that are more or less tightly bound to carriers such as albumin. According to the invention this is accomplished by a simultaneous significant increase of the flow rate of the dialysis fluid and of the area of the membrane that separates the blood from the dialysis fluid, compared to conventional dialysis.
摘要:
A method, apparatus and software program for measuring a parameter relating to the heart-lung system of a mammal are described. The method, software and apparatus can be implemented in a dialysis or other blood treatment apparatus comprising an extracorporeal blood circuit connected to a mammal; the circuit comprises a dialyzer, or other treatment unit, having a blood inlet, a blood outlet, a treatment fluid inlet and a treatment fluid outlet. The method comprises the steps of providing a pulse of a detectable substance in the blood circuit, measuring an integrated concentration of the detectable substance on the dialysis fluid outlet, determining the parameter based on the measurements on the dialysis fluid outlet.
摘要:
The present invention relates to a method of controlling a dialysis apparatus, which can be used for e.g. hemodialysis, hemodiafiltration or hemofiltration. Numerous alarms occur during treatments creating additional workloads for the operator. The present method of controlling the apparatus allows an automatic switch form a first control mode to another, thus allowing the treatment to continue without operator interference.
摘要:
Methods are disclosed for calculating the concentration of a predetermined substance in the blood of a mammal including passing the blood over one side of a semipermeable membrane in a dialyser and passing a dialysis fluid on the other side of the semipermeable membrane in the dialyser to provide a dialysate, measuring the concentration of the predetermined substance in the dialysate, introducing a disturbance in the dialyser, calculating the effective dialysance of the dialyser based on the disturbance, and calculating the concentration of the predetermined substance in the blood based upon the effective dialysance. Apparatus is also disclosed for calculating the concentration of the predetermined substance in the blood.
摘要:
A method and medical machine for calibrating a peristaltic pump (36, 39) intended to be used in connection with the medical machine, such as a dialysis machine. The machine comprises an internal fluid flow meter (18, 19). Fluid is introduced into the pump segment (36) and is pumped by the peristaltic pump at a substantially constant rotation rate. Three different inlet pressures are obtained and measured by a pressure meter (16) and the corresponding fluid flow is measured by the internal fluid flow meter (18, 19) for obtaining calibration pair values. A calibration curve is calculated from said pair values by a computer (23) inside the medical machine. The actual fluid flow rate is determined by said computer (23) from said calibration curve based on the actual inlet pressure and the actual revolution rate of the propelling means.
摘要:
An ambulatory ultrafiltration device includes a blood filter that has a blood side or fluid communication with the vascular system of the subject, an ultrafiltrate side, and a semipermeable membrane disposed between the blood side and the ultrafiltrate side. The ambulatory ultrafiltration also includes a buffer vessel in fluid communication with the blood side of the blood filter, and a blood pump. The blood pump is controlled to alternate between a withdrawal phase and a return phase. In the withdrawal phase, blood is withdrawn on a blood path from the subject via the blood filter to the buffer vessel. In the return phase, blood is returned from the buffer vessel to the subject on the blood path. The blood filter is arranged to remove ultrafiltrate from the blood during at least one of the withdrawal and return phases.
摘要:
The present invention relates to a method and a device for avoiding that any of at least one first or at least one second access device (20, 30) is unintentionally withdrawn from a vessel (11). According to the present invention this is achieved by inserting the first access device in a first direction in the vessel, inserting the second access device in a second direction in the vessel, the second direction being different from the first direction and interconnecting the first and the second access device by providing a fixed length of an interconnecting device (50).
摘要:
The present invention concerns a multipart fluid system for use in CRRT, wherein the multipart fluid system comprises an anticoagulation fluid and at least one fluid from the group consisting of a dialysis fluid and an infusion fluid. According to the invention the anticoagulation fluid comprises at least 8 mM citrate, and the dialysis fluid and/or infusion fluid comprises 2-8 mM citrate and 1-5 mM total calcium. The present invention further concerns a system for regional citrate anticoagulation in an extracorporeal blood circuit.
摘要:
A proposed blood treatment apparatus includes: a blood treatment unit, a pair of fluid pumps and a pair blood pumps. The blood treatment unit is configured to receive untreated blood and fresh blood treatment fluid, and emit treated blood and used blood treatment fluid. The fluid pumps are configured to pass blood treatment fluid through the blood treatment unit. The blood pumps are configured to extract untreated blood from a blood source, pass extracted blood through the blood treatment unit and deliver treated blood to a target vessel. Additionally, the fluid pumps are configured to control the operation of the blood pumps via the blood treatment fluid. Moreover, a flow control device is configured to control a trans-membrane flow between the blood side and the a fluid side of the blood treatment unit. Hence, for instance ultrafiltration can be adjusted to a desired level in a very straightforward manner.