556results about "Peritoneal dialysis" patented technology

The solid-liquid separation mechanism for the peritoneal dialysis waste liquid bag treatment device comprises a separation chamber, a moving mechanism, a guide rail assembly and a separation assembly, the separation chamber is located above the separation assembly, a peritoneal dialysis waste liquid bag achieves liquid-bag separation in the separation chamber through the separation assembly, and the separation chamber is connected with the moving mechanism and the guide rail assembly. The moving mechanism drives the separation chamber to move along the guide rail assembly, the broken peritoneal dialysis waste liquid bag falls into the separation chamber and stands in the separation chamber, so that the peritoneal dialysis waste liquid flows out of the broken peritoneal dialysis bag, the flowing-out peritoneal dialysis waste liquid flows out of the separation chamber through the separation assembly, and after the peritoneal dialysis waste liquid completely flows out, the moving mechanism drives the separation chamber to move along the guide rail assembly; and the peritoneal dialysis bag is pushed away from the separation chamber, so that the peritoneal dialysis waste liquid is separated from the peritoneal dialysis bag.

The invention relates to an automatic peritoneal dialysis machine auxiliary system capable of preventing peritoneal protein from being lost, and belongs to the technical field of peritoneal dialysis. By arranging the auxiliary system comprising a hollow fiber membrane filter, peritoneal drainage liquid is guided into the hollow fiber membrane filter in the drainage stage; the protein is intercepted by utilizing the semi-permeable membrane characteristic, and small molecule metabolic wastes penetrate through the semi-permeable membrane characteristic to form a filtrate rich in the protein; and then the feedback pump speed is dynamically adjusted through a control system based on a signal of a flow sensor, so that the feedback process of the protein liquid is stably synchronized with drainage, liquid injection and staying stages of the automatic peritoneal dialysis machine, online recovery and safe feedback of protein are realized, and the problem that the protein liquid flows back to the treatment cycle of the automatic peritoneal dialysis machine is solved on the premise that the treatment cycle is coordinated with the treatment cycle of the automatic peritoneal dialysis machine. Protein in peritoneal drainage liquid is continuously and selectively recovered and safely returned, so that the problem of protein trophism loss of long-term peritoneal dialysis patients is directly reduced.

A method of reducing leakage current from a patient to a ground potential through an applied part of a medical device includes defining a maximum permissible leakage current Amax from the patient to the ground potential when the patient is energized to an electric potential V and supplying the medical device with water having a resistivity value ρ through a fluid line having a length L and an inner diameter ID. The value of L and ID is selected to cause the fluid conduit filled with water of resistivity ρ to have a resistance of R high enough to maintain the leakage current from the patient to the ground potential below Amax.

Damping devices, including damping devices for automated peritoneal dialysis (APD) systems, and associated systems, devices, and methods are disclosed herein. In one embodiment, a damping device includes a body portion, a first membrane, and a second membrane. The body portion can include a first side, a second side opposite the first side, an inlet, and a cavity fluidly coupled to the inlet. The cavity can be defined at least in part by a lumen in the body portion extending from the first side to the second side. The first membrane can be affixed to the first side of the body portion such that the first membrane hermetically seals the cavity at the first side. The second membrane can be affixed to the second side of the body portion such that the second membrane hermetically seals the cavity at the second side.

In some examples, a sensor for detecting dextrose includes at least one working electrode including Cu and being configured to electro-oxidize dextrose in an aqueous solution. The sensor further includes at least one counter electrode. In some examples, a system includes a fluid line, a dextrose container, a peritoneal dialysis container, and the sensor. The fluid line is configured to transport water. The dextrose container is configured to introduce dextrose in the fluid line to generate a peritoneal dialysis composition comprising the water and dextrose. The peritoneal dialysis container is downstream of the dextrose container and configured to receive the peritoneal dialysis composition. The sensor may be configured to detect dextrose in the peritoneal dialysis composition.

A medical fluid system includes a medical fluid pump actuator; a medical fluid carrying set including a flexible sheet; a temperature sensor positioned and arranged to sense a temperature of the medical fluid flowing through the medical fluid carrying set; a pressure sensor positioned and arranged to contact the flexible sheet when the medical fluid carrying set is loaded for operation with the medical fluid pump actuator; and a control unit configured to (i) precondition the flexible sheet for operation with the pressure sensor by causing the medical fluid pump actuator to apply pressure to the flexible sheet and (ii) use an output from the temperature sensor in a compensation algorithm that modifies an output from the pressure sensor.

A blood treatment machine includes a patient comfort feedback mechanism configured to be adjusted by a patient to indicate comfort levels of the patient. The machine is configured to adjust one or more treatment parameters based on the patient feedback.

In fluorometer diagnostic mode, the system moves water and fluorescent probe material from the mixing chamber to the fluorometer. In filter diagnostic mode, the system moves water and fluorescent probe material from the mixing chamber to the inlet so that (i) a first portion of water and fluorescent probe material exits through the bypass outlet, moves into the mixing chamber, and returns, and (ii) a second portion of water passes through the filter to the fluorometer. In dialysate dispensing mode, the system moves dialysate and fluorescent probe material from the mixing chamber to the inlet so that (i) a first portion of dialysate and fluorescent probe material exits through the bypass outlet, moves into the mixing chamber, and returns, and (ii) a second portion of dialysate passes through the filter to the fluorometer.

The present invention relates to a urine drainage device with quick automatic response and a dedicated drainage material. An anti-leakage housing 20 in the dedicated drainage material is provided with an automatic trigger switch, which can automatically sense a urination status of a patient, and quickly respond to starting negative pressure suction. The automatic trigger switch is automatically turned off after urination ends, and the urine drainage device 10 returns to a standby or dormant state. By means of the technical solution, not only is the cost of the prepared nursing consumable lower, the universality is high, but also the sensitivity of urination status monitoring is high, the probability of distortion or false triggering is extremely low, and the response time of starting negative pressure is short, thereby avoiding the problem of urine overflow caused by delayed urine sensing or delayed negative pressure starting after urination.

A system for peritoneal dialysis operates according to a measurement method to supply a first fluid (F1) to the peritoneal cavity PC, leaving an intraperitoneal volume of fluid in the PC, extracting a first volume (V1) of fluid from the PC and measuring a first value of a concentration-related parameter of the fluid thus extracted. The system then operates to supply a second volume (V2) of a second fluid (F2) to form a mixture with the intraperitoneal volume of fluid in the PC, extracting a third volume (V3) of the mixture from the PC and measuring a third value of the parameter of the mixture thus extracted. The second fluid (F2) has a second value of the parameter and is compositionally different from the first fluid (F1). The use of such a second fluid (F2) allows the intraperitoneal volume to be determined with high accuracy based on the second volume (V2) and the first, second and third values.

To provide biological fluid purification using a biocompatible membrane.SOLUTION: An apparatus for integrated adaptive biological blood purification includes a function unit. The function unit is provided with: a membrane including a pipe surface and a filtration surface; a blood vessel channel system which is adhered to the blood vessel surface of the membrane and includes a first lumen space in fluid communication with the blood vessel surface of the membrane, a first end configured to be in fluid communication with a fluid supply part and to contact the same, and a second end configured to be in fluid communication with a filtration fluid outlet and to contact the same; and a filtration channel system which is adhered to the filtration surface of the membrane and includes a second lumen space in fluid communication with the filtration surface of the membrane and a third end configured to be in fluid communication with a filtrate outlet and to contact the same.SELECTED DRAWING: Figure 11

An intraperitoneal pressure ("IPP") measurement device is disclosed herein. In one embodiment, the IPP measurement device includes a transferset or catheter fluidly coupled to a patient's abdominal cavity and a pressure sensor adapted to contact the transferset or catheter. The pressure sensor is configured to transmit output data indicative of IPP within the patient's abdominal cavity. The pressure sensor includes a pressure element configured to measure pressure exerted by fluid in the transferset or catheter. The pressure sensor also includes a pressure amplifier having a first side contacting a portion of the transferset or catheter and a second side contacting the pressure element. The first side has a larger diameter or surface area compared to the second side to amplify the pressure signal for IPP measurement.

The fluid preparation device is configured to provide (205) a medical fluid for use in dialysis therapy by generating (204) a mixture of a base fluid and one or more concentrated fluids, each of the one or more concentrated fluids being stored in a respective container. The control device determines (203) a reference concentration of the concentrated fluid at a reference point in time by operating (202) the device to pump the concentrated fluid to a sensor device for measuring a component-related parameter. The control device estimates (206) an instantaneous concentration of the concentrated fluid as a function of time by using the reference concentration and at least one calculation function for calculating an evaporative moisture loss over time from the container. Before or during the production of the mixture, the control device adjusts (207) a mixing ratio between the base fluid and the concentrated fluid based on the instantaneous concentration to produce a mixture having the target component.

Systems and methods are disclosed for assessing the functionality of solenoid valve activation in peritoneal dialysis systems. In at least one embodiment, measurements of current values may be received from a solenoid valve at a predetermined sampling rate over a predetermine duration of time to generate a current profile for the solenoid valve. A fifth degree polynomial model may be fit to the current profile and optimized. The optimized polynomial model may be applied to a trained support vector machine to determine whether the current profile indicates that the corresponding solenoid valve has actually opened or closed.

The utility model relates to the technical field of peritoneal dialysis equipment, and discloses a pipeline speed controller which comprises a lower clamping plate and an upper clamping plate, a peritoneal dialysis pipeline body is arranged between the lower clamping plate and the upper clamping plate in a clamped mode, and a plurality of clamping mechanisms are arranged on the two sides of the lower clamping plate and the two sides of the upper clamping plate in a clamped mode. A pipeline flow speed control mechanism is fixedly arranged on the upper end face of the upper clamping plate, and first handles are arranged on the two sides of the lower clamping plate correspondingly. According to the peritoneal dialysis catheter, the catheter flow speed control mechanism is arranged at the upper end of the upper clamping plate, the baffle can compress the peritoneal dialysis catheter body by rotating the rotating handle, and therefore the purpose of controlling the flow speed of dialysate in the peritoneal dialysis catheter body is achieved, and meanwhile the upper clamping plate and the lower clamping plate are clamped and positioned through the limiting rod and the limiting hole; the upper clamping plate and the lower clamping plate can be detached by detaching the clamping mechanism after dialysis is completed, so that the pipeline speed controller can be repeatedly used, and the dialysis cost is reduced.

A medical fluid delivery system includes a medical fluid delivery machine configured to generate a message indicating that the medical fluid delivery machine is ready to perform a task; and at least one server in data communication with the medical fluid delivery machine via a first link to receive the message, the at least one server configured to (i) relay the message from the medical fluid delivery machine to a remote mobile communication device via a second link, (ii) receive a response from the remote mobile communication device indicating to start the task via the second link, and (iii) send a notification to the medical fluid delivery machine to start the task via the first link.

The invention relates to the technical field of peritoneal dialysis monitoring, and discloses a dynamic weighing and data fusion peritoneal dialysis solution balance monitoring system and method. The system comprises a dynamic weighing module, a multi-source data acquisition module, a data fusion processing module, a balance monitoring module and an early warning output module. The dynamic weighing module collects dialysate input and discharge amount in real time and generates weight data; the multi-source data acquisition module is used for acquiring dialysate components, treatment time and physiological parameters of a patient; the data fusion processing module is used for fusing the data to generate dialysate balance characteristic data; the balance monitoring module is used for calculating the net ultrafiltration amount and the liquid balance state and identifying the risk of abnormal leakage or liquid retention; and the early warning output module generates early warning information when the risk is identified. The system does not need manual intervention, can collect and fuse multi-source data in real time, accurately judge the liquid balance state and give an early warning in time, and is suitable for hospital and home peritoneal dialysis scenes.

A proportioning system includes a solute container filled with dry solutes, a source of water, a container of electrolyte concentrate, a fluid circuit connecting the solute container to the source of water and the container of electrolyte concentrate, the fluid circuit having an empty mixing container, a controller configured to transfer water from the source of water to the solute container through the fluid circuit so as to prepare a solute concentrate solution in the solute container. The controller is configured to transfer fluid from the container of electrolyte concentrate to a mixing container as well as a solute concentrate from the solute container to the mixing container and further adding water to said mixing container to form a medicament therein.

A hemodiafiltration system with a disposable pumping unit is disclosed. An example system includes a medical fluid pump actuator, a medical fluid heater, a blood filter and a disposable unit. The example disposable unit includes a medical fluid cassette portion including a medical fluid cassette housing configured to be operatively connected to the medical fluid pump actuator to pump medical fluid through the medical fluid cassette portion when the medical fluid cassette portion is in fluid communication with a medical fluid source. The example medical fluid cassette portion is also configured to be placed in fluid communication with the blood filter and with an extracorporeal circuit communicating with the blood filter, the fluid communication enabling hemodiafiltration to be performed. The example disposable unit also includes a heater bag configured to be placed in operable communication with the medical fluid heater and in fluid communication with the medical fluid cassette portion.

A method of performing peritoneal dialysis (PD), the method comprising: delivering a PD fluid to the peritoneal cavity of a patient through a PD catheter; dwelling the PD fluid within the peritoneal cavity; and while dwelling the PD fluid, removing a biofilm from the PD catheter wall using a biofilm removing solution. The biofilm removing solution comprises: sodium citrate dihydrate; citric acid anhydrous; sodium lauryl sulfate; and water. In another aspect, a method for decontaminating a peritoneal dialysis (PD) catheter and removing a biofilm from the PD catheter and a transfer set, the method comprising: providing a biofilm removing solution; transferring the biofilm removing solution into a syringe; connecting the syringe to a transfer set of the PD catheter; and filling the transfer set and the PD catheter with the biofilm removing solution.

A peritoneal dialysis system comprises a cycler including an air pump; a heater housing including a heater and an expandable bladder in fluid communication with the air pump, wherein the heater housing is sized to receive a heater bag between a wall of the housing and the expandable bladder; a plurality of nesting containers configured for fluid communication with the air pump a disposable set operable with the cycler and including the heater bag and a plurality of fluid supply bags for placement within the plurality of nesting containers; and a control unit programmed to control the air pump and the heater.

A peritoneal dialysis (“PD”) system includes a PD fluid pump; a patient line for receiving used PD fluid pumped by the PD fluid pump during a patient drain; a pressure sensor positioned and arranged to sense a negative pressure associated with the PD fluid pumped during the patient drain; and a control unit configured to (i) determine or know a flowrate of the PD fluid pumped during the patient drain, (ii) determine an applied negative pressure at which the PD fluid pump is to pump the PD fluid during the patient drain, the applied pressure based on a pressure drop corresponding to the determined or known flowrate, and (iii) use sensed negative pressure from the pressure sensor to cause the PD fluid pump to pump the PD fluid during the patient drain at the applied negative pressure.

A dialysis system having motor driven pressure estimation of fluid within a patient line is disclosed. A peritoneal dialysis (“PD”) system includes a fluid pump and a patient line that fluidly couples the fluid pump to an indwelling catheter leading into a patient's peritoneal cavity. The PD system also includes a motor driver that controls a motor of the fluid pump and transmits an output signal that is indicative of a load on the motor. The PD system further includes a machine learning algorithm that associates data related to output signals from motor drivers with known fluid pressures within patient lines. A processor of the PD system transmits an input signal to activate the motor driver, receives the output signal from the motor driver, and estimates a fluid pressure within the patient line by applying the data from the received output signal to the machine learning algorithm.