40 results about "Dialysis fluids" patented technology

A peritoneal-based (“bloodless”) artificial kidney processes peritoneal fluid without need for additional fluids (“waterless”). Fluid is separated into a protein-rich stream and a protein-free stream. The protein-rich stream is regenerated using a sorbent assembly, and its protein composition can be modified by removal of selected protein(s) (“dialysate-pheresis”). It is then reconstituted with additives and returned into the peritoneal cavity, thereby reducing protein-loss and providing oncotic-pressure for ultrafiltration. The protein-free stream is used to produce free water, and an alkaline or acid fluid for optimization of the composition of the regenerated stream. The unused protein-free stream can be used to “reverse flush” the separator to maintain its patency and the excess discarded for fluid-balance regulation. Compared to prior art, immobilization of urease allows more protein rich fluid to be regenerated and re-circulated into the peritoneal cavity for toxin removal and allows practicable development of portable and wearable artificial kidneys.

An automatic exchanger apparatus for peritoneal dialysis fluids is provided having a dialysis fluid bag and a drained fluid bag and arranged for connecting and disconnecting between the end of a peritoneal dialysis circuit equipped with a branching point and the end of a tube extending from a patient to drain the waste dialysis fluid from the cavity of the patient and fill the peritoneal cavity of the patient with a fresh peritoneal dialysis fluid for exchange, and in particular comprises: means A, B, and C for carrying out respectively a step (A) of connecting the end of the patient side tube to the end of the peritoneal dialysis circuit, a step (B) of delivering and draining the waste fluid, and a step (C) of, disconnecting the two ends and connecting the end of the patient side tube to its shut-off member, arranged for carrying out their respective steps (A) and (C) automatically; and a controlling means for controlling the respectively means to execute their respectively steps in a sequence. The apparatus is simple in the construction while carrying out, with much ease, the connection and disconnection of the tubes and the exchange of the fluids including a waste and a fresh supply one, hence avoiding operational errors of the operator and minimizing the possibility of infection and contamination.

A medical treatment system, such as peritoneal dialysis system, may include control and other features to enhance patient comfort and ease of use. For example, a peritoneal dialysis system may include a control system that can adjust the volume of fluid infused into the peritoneal cavity to prevent the intraperitoneal fluid volume from exceeding a pre-determined amount. The control system can adjust by adding one or more therapy cycles, allowing for fill volumes during each cycle to be reduced. The control system may continue to allow the fluid to drain from the peritoneal cavity as completely as possible before starting the next therapy cycle. The control system may also adjust the dwell time of fluid within the peritoneal cavity during therapy cycles in order to complete a therapy within a scheduled time period. The cycler may also be configured to have a heater control system that monitors both the temperature of a heating tray and the temperature of a bag of dialysis fluid in order to bring the temperature of the dialysis fluid rapidly to a specified temperature, with minimal temperature overshoot.

An extracorporeal blood treatment apparatus is provided comprising a filtration unit (2) connected to a blood circuit (17) and to a dialysate circuit (32), a preparation device (9) for preparing and regulating the composition of the dialysis fluid; a control unit (12) is configured for setting a sodium concentration value for the dialysis fluid in the dialysis supply line (8) at a set point; the setting of the sodium concentration includes the sub-step of calculating the sodium concentration value as an algebraic sum of a main contribution term based on the blood plasma conductivity and of an adjustment contribution term based on a concentration of at least a substance in the dialysis fluid chosen in the group including bicarbonate, potassium, acetate, lactate, citrate, magnesium, calcium, sulphate, and phosphate.

Control methods of a dialysis machine for allowing the dialysate-side detection of a recirculation in an arteriovenous shunt of a patient during ongoing hemodialysis are described. A sensor is arranged downstream of a dialyser and detects a change of a physicochemical parameter P_D of outflowing dialysis fluid. Control elements are provided to guide the dialysis fluid in a selected manner through the dialyser or pass it by. Recirculation may be determined by passing the dialysis fluid by the dialyser so that the dialysis fluid is guided unchanged along the sensor for calibration, switching the control elements after optional sensor calibration such that the dialysis fluid flows through the dialyser, and adjusting a desired first blood flow value BF₁ in the blood-side extracorporeal circulatory branch so that between an inlet of the extracorporeal circulatory branch and an outlet a recirculation R and, a first clearance K₁ are adjusted and the parameter detected by the sensor adopts a corresponding value P_D1, changing the first blood flow value BF₁ to a second blood flow value BF₂, wherein a second clearance K₂ is adjusted, and accordingly at the sensor a new parameter value P_D2 is provided and detected, and determining the recirculation R by the course of change from the parameter value P_D1 to the parameter value P_D2.

The invention relates to a blood treatment device (1000), comprising a dialysis filter (100) or a receptacle (9) for a dialysis filter (100), a dialysis-fluid supply line (1) having a first connector (3) for supplying dialysis fluid to the dialysis filter (100), a dialysate discharge line (5) having a second connector (7) for discharging dialysate from the dialysis filter (100), a blood leakage sensor (11) configured and arranged to detect blood in or on the dialysis filter (100), in the dialysis-fluid supply line (1), and/or in the dialysate discharge line (5) and configured to output a blood leakage signal (BLS) if blood is detected, a short-circuit line (13) for connecting the dialysis-fluid supply line (1) and, or to, the dialysate discharge line (5) in fluid communication, wherein for this purpose the short-circuit line (13) has a third connector (15) and a fourth connector (17) each for connecting to one of the first and second connector (3, 7), and a controller (33).

An apparatus for extracorporeal treatment of blood (1) comprising a filtration unit (2), a blood withdrawal line (6), a blood return line (7), an effluent fluid line (13), a pre and/or post-dilution fluid line (15, 25) connected to the blood withdrawal line, and a dialysis fluid line. Pumps (17, 18, 21, 22, 27) act on the fluid lines for regulating the flow of fluid. A control unit (10) is configured to periodically calculate a new value for the patient fluid removal rate to be imposed on an ultrafiltration actuator in order to keep a predefined patient fluid removal rate across a reference time interval irrespective of machine down times.

The mentioned invention describes an ergonomic belt for persons with peritoneal dialysis which is used for care of the patients after having surgery, specifically for kidney failure, where a catheter is placed to carry out the dialysis, the benefits of the usage of the mentioned invention provide abdominal support allowing to ensure the care of the suture, so it won't open because of the movement or the patient's efforts.

It also has the particularity to protect the catheter, since there is an orifice that could be outside of the belt preventing for it to bend or to be pulled under the weight of the dialysis fluids, also having a compartment where the catheter could be located protecting at the same time from the environment exposition and the perspiration of the patient, so it can be assured not having infections that could harm the integrity of the person carrying it.

The invention discloses a method for connecting and controlling a pipeline between a peritoneal dialysis machine and a patient. The pipeline comprises a dialysate bag and a waste liquid bag of an automatic peritoneal dialysis machine, the automatic peritoneal dialysis machine communicates with the dialysate bag through a perfusion tube, the automatic peritoneal dialysis machine communicates with an abdomen inlet tube through a perfusion pipeline of the peritoneal dialysis machine, a heating bag is arranged at one section of the perfusion pipeline of the peritoneal dialysis machine, the outletend of the abdomen inlet tube communicates with the abdominal cavity of the patient, and the inlet end of the abdomen inlet tube communicates with the waste liquid bag through a drainage pipeline of the peritoneal dialysis machine and a drainage pipe. The invention relates to the technical field of peritoneal dialysis pipeline connection. According to the method for connecting and controlling a pipeline between a peritoneal dialysis machine and a patient, the problems that dialysate perfusion and drainage of an existing automatic peritoneal dialysis machine share one pipeline, so that residualwaste dialysate in the pipeline is proneto be injected into the abdominal cavity of a human body again, and the heating speed of the dialysis machine for the dialysate is low are solved.

The invention provides a peritoneal dialysis external catheter structure convenient to use. The peritoneal dialysis external catheter structure convenient to use comprises a fixing piece attached to the abdomen of a patient; and the guide pipe structure comprises an installation pipe, and the installation pipe is installed in the fixing piece. According to the peritoneal dialysis external catheter structure convenient to use, by arranging the catheter structure, the abdomen of a patient is mainly connected with dialysis equipment, so that dialysate can be input into the body of the patient, the mounting tube is arranged on the fixing piece, and the fixing piece is effectively and tightly mounted at the abdomen of the patient through the fixing band, so that the patient can be conveniently and rapidly fixed. The catheter structure is stably mounted, so that the mounting tube and the access tube can move along with the movement of the body of the patient, the situation that the access tube falls off from the abdomen of the patient can be well avoided, meanwhile, the length of the catheter structure is kept unchanged, and the patient has a large movement range.

The invention relates to systems and methods for optimizing a peritoneal dialysate prescription based on one or more fluid characteristics sensed from a filtrate removed from a patient. The systems and methods include sensors, flow paths, and processors to adjust a peritoneal dialysate prescription and deliver peritoneal dialysis therapy to a patient based on the adjusted prescription. The method can include the steps of removing fluid from a peritoneal cavity of a patient; sampling one or more characteristics of the removed fluid; and adjusting a peritoneal dialysate prescription based on the one or more characteristics of the removed fluid. The system can include a peritoneal dialysate effluent line; at least one concentrate source fluidly connectable to the peritoneal dialysate flow path; and at least one sensor positioned in the peritoneal dialysate effluent line.

A quick flushing device for a hemodialysis solution barrel, including a sink and a frame, characterized in that a frame-shaped bucket holder is installed horizontally on the rectangular sink opening, and a plurality of "L"-shaped flushing pipes are installed above the bucket holder , the upper end of the flushing pipe is connected with the main water pipe by a valve, and the lower end extends into the bucket rack. There are two small holes on the upper side wall of the horizontal part of the flushing pipe at an angle of 5-10 degrees. The lower end of the flushing pipe is on the There is a water outlet with a diameter smaller than the inner diameter of the water pipe at the end; the upper part of the rear side wall of the frame is horizontally equipped with a main water pipe, one end of the main water pipe is closed, the other end is equipped with a main water pipe valve, and the left and right ends are respectively connected to the outer wall of the barrel A flushing pipe, a valve is installed on the barrel outer wall flushing pipe, and a plastic hose is connected at the end. It solves the problem of time-consuming, laborious and water-consuming manual flushing of dialysate buckets, and is suitable for flushing dialysate buckets in hemodialysis centers of medical institutions.

The invention relates to the technical field of medical instruments, in particular to a blood purification device. The device comprises a group of filtering assemblies, a positioning assembly, a dialysis tube, an upper tube cover and a lower tube cover, each filtering assembly comprises an outer pipe and an inner pipe connected into the outer pipe in a penetrating mode, the positioning assembly comprises a first circular plate and a second circular plate, a liquid inlet tube is arranged on the tube body at one end of the dialysis tube close to the lower tube cover, grooves are formed in the surfaces of the upper tube cover and the lower tube cover, a cavity between the first circular plate and the second circular plate in each groove is a blood chamber, a cavity between the second circularplate and the bottom of each groove in each groove is a liquid chamber, a liquid outlet pipe and a blood outlet pipe are arranged on the lower tube cover, a blood inlet pipe is arranged on the uppertube cover, and a group of flow guide grooves are formed in the upper tube cover and communicate the interior of the dialysis tube with the liquid chamber of the upper tube cover. According to the device, the membrane rupture phenomenon can be effectively avoided, and meanwhile the contact area of blood and dialyzate in a dialyzer can be effectively increased, and the affinity to the body of a patient can be effectively improved.

The invention relates to a dialyzer (6; 6'; 6''; 6''') for extracorporeal blood treatment having an elongate dialyzer housing (14; 14'; 14''; 14'''; 14'''') and at least one dialysis membrane (30; 30'; 30''; 30'''; 30''''), which divides an interior of the dialyzer housing (14; 14'; 14''; 14'''; 14'''') into a dialysis fluid chamber (32; 32'; 32''; 32'''; 32''''), which has a dialysis fluid supply connection (44; 44'; 44''; 44'''; 44'''') and a dialysis fluid discharge connection (46; 46'''), and a blood chamber (38; 38'; 38''; 38'''; 38''''), which has a blood supply connection (40; 40''') and a blood discharge connection (42; 42'; 42''; 42'''; 42''''). The dialyzer has an additional ventilation outlet (48; 48'; 48''; 48'''; 48'''') for ventilating the blood chamber (38; 38'; 38''; 38'''; 38''''), which is formed on the dialyzer housing (14; 14'; 14''; 14'''; 14'''') on or near an end face thereof. The additional ventilation outlet (48; 48'; 48''; 48'''; 48'''') is provided in the blood discharge connection (42; 42'; 42''; 42'''; 42'''') between an outlet area (58; 58'; 58''; 58'''; 58'''') of the blood discharge connection (42; 42'; 42''; 42'''; 42'''') and the dialysis fluid supply connection (44; 44'; 44''; 44'''; 44''''), in respect of a blood flow direction (Bo; Bo'; Bo''; Bo'''; Bo''''). The invention further relates to a corresponding dialysis apparatus (2) having a ventilation outlet (48; 48'; 48''; 48'''; 48'''') provided on a dialyzer housing (14; 14'; 14''; 14'''; 14'''') or on a hose (62'''') connected to a blood discharge connection (42'''').

The invention provides a multi-port connector used for medical treatment, and relates to the technical field of medical devices. The multi-port connector comprises a top cover, a base plate and a multi-way valve; the top cover is buckled at the top end of the base plate; the top cover is made of a rigid transparent material; the upper part of the base plate is provided with an annular detachable sealing strip; the multi-way valve is installed in the base plate; the base plate is provided with three ports; and communicating of any two ports is realized by rotating the multi-way valve. Accordingto the multiport connector provided by the invention, the circulation situation of dialyzate can be directly observed, and the top cover is kept at an initial position during transportation; and themulti-port connector has the beneficial effects of being convenient to use and facilitating observation.

A priming method (300, 500, 600) and a priming apparatus (700) are provided. The priming method (300, 500, 600) comprises: controlling, on the condition that an arterial line (230) is blocked and a venous line (240) is opened, a supply device to deliver a priming solution to a dialysate compartment (222) of a dialyzer (220), wherein one end of the arterial line (230) with a blood pump (235) and one end of the venous line (240) with a venous chamber (244) are connected to a blood compartment (224) of the dialyzer (220) and the other end of the arterial line (230) and the other end of the venous line (240) are connected to a container (270, 275) via a connector (280, 285), and the priming solution in the dialysate compartment (222) crosses a membrane of the dialyzer (220) and enters into the venous line (240); turning on, after a predefined amount of priming solution is delivered into the dialysate compartment (222) by the supply device, the blood pump (235) to circulate the priming solution in an extracorporeal circuit composed of the arterial line (230), the blood compartment (224) and the venous line (240). The priming method (300, 500, 600) and the priming apparatus (700) can be applicable in the basic and advanced dialysis machines.