1152results about "Peritoneal dialysis" patented technology

A peritoneal dialysis (“PD”) system having an ultrafilter is disclosed herein. In one example, the PD system includes a housing and a PD fluid pump. The PD system also includes a filter comprising an outer chamber, a central portion, a membrane, an inlet connected to the outer chamber, an outlet, a first venting port connected to the outer chamber, and a second venting port connected to the central portion. The first venting port has a valve preventing air flow into the filter via the first venting port. The PD system further includes a pressure sensor and a control unit configured to control the PD fluid pump. The control unit is further configured to determine a pressure inside the filter based on an output from the pressure sensor and determine an integrity status of the membrane based on the pressure inside the filter.

Provided herein is a peritoneal dialysis (“PD”) system comprising a housing and one or more doors comprising elastomeric properties. Each of the one or more doors comprises one or more features configured to couple to one or more features of the housing. Further, each door includes one or more inserts molded between two layers of elastomeric material where the features are coupled to. The doors are configured to cover and thermally insulate one or more PD fluid lines when in a closed configuration. The doors are also configured to transition to an open configuration to provide access to one or more PD fluid lines for treatment.

The invention discloses a peritoneal dialysis anti-blocking high-circulation nursing device for pediatric nephropathy patients, and belongs to the technical field of medical nursing. Comprising the following modules: a multi-mode sensing module for collecting pressure, flow velocity, turbidity, vibration spectrum and temperature data in a catheter in real time; the signal optimization processing module highlights weak features of potential blockage and improves data quality; the feature fusion analysis module is used for comprehensively evaluating the state of the catheter; the AI prediction analysis module is used for predicting the occurrence probability, the position and the possible time window of blockage; the risk early warning and intervention module is used for sending out graded early warning signals according to the prediction result and generating personalized anti-blocking intervention suggestions; the micro-fluidic execution module inhibits formation of initial sediments through a micro-pulse technology and dynamic fluid mechanics adjustment, and effectively reduces the risk of blockage; and the remote medical support module provides visual data visualization and intervention suggestions, supports remote monitoring and emergency intervention, and is seamlessly integrated with a hospital system while ensuring data security.

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.

The invention relates to medical instruments, in particular to a peritoneal dialysis device which comprises a dialysate management unit, a sensor unit, a processor, a storage device, a peritoneal transfer model, an intelligent alarm management unit and a communication unit, and the dialysate management unit is configured to be used for perfusion of dialysate into the abdominal cavity of a patient and drainage of the dialysate from the abdominal cavity of the patient; the sensor unit is configured to be used for monitoring physiological parameters of a patient and dialysate characteristic parameters and receiving symptom information and comfort level scores input by the patient, the storage stores instructions executed by the processor, and the instructions enable the processor to be capable of dynamically adjusting treatment parameters of the dialysate management unit in real time in combination with a pre-trained peritoneal transfer model. The perfusion speed, the drainage speed or the dialysate temperature of the dialysate management unit are dynamically adjusted, so that the comfort level score of the patient is maintained to be above a preset threshold value, treatment parameters can be dynamically adjusted in real time to optimize the treatment effect, peritonitis risks are early warned, and the comfort level of the patient is improved.

In some examples, a system includes a glucose sensor configured to generate a signal indicative of a blood glucose level of a patient, a medical device configured to deliver insulin to the patient, a peritoneal dialysis (PD) device, and control circuitry. The control circuitry is configured to control the PD device to deliver PD therapy to a patient during a PD cycle, determine a blood glucose level of the patient during the PD cycle based on a signal from the glucose sensor, determine that the blood glucose level is greater than or equal to a predetermined blood glucose level threshold, and control the medical device to deliver insulin to the patient in response to determining the blood glucose level is greater than or equal to the predetermined blood glucose level threshold.

Improvements in fluid volume measurement systems are disclosed for a pneumatically actuated diaphragm pump in general, and a peritoneal dialysis cycler using a pump cassette in particular. Pump fluid volume measurements are based on pressure measurements in a pump control chamber and a reference chamber in a two-chamber model, with different sections being modeled using a combination of adiabatic, isothermal and polytropic processes. Real time or instantaneous fluid flow measurements in a pump chamber of the diaphragm pump are also disclosed, in this case using a one-chamber ideal gas model and using a high speed processor to obtain and process pump control chamber pressures during fluid flow into or out of the pump chamber. Improved heater control circuitry is also disclosed, to provide added or redundant safety measures, or to reduce current leakage from a heater element during pulse width modulation control of the heater element. Improvements are also disclosed in an application of negative pressure during a drain phase in peritoneal dialysis therapy, and to control an amount of intraperitoneal fluid accumulation during the therapy. Improvements in efficiency are also disclosed in movement of fluid into and out of a two-pump cassette and a heater bag of the peritoneal dialysis cycler, and in synchronization of operation of two or more pumps in the peritoneal dialysis cycler or other fluid handling devices using a multi-pump arrangement.

The invention provides a peritoneal dialysis solution detection data intelligent analysis method based on visual identification, and the method comprises the steps: obtaining a to-be-identified test paper image, carrying out the test paper region segmentation and color correction of the test paper image, and carrying out the brightness equalization processing of a test paper detection region, and obtaining a processed test paper detection region; obtaining a standardized color feature vector of a test paper color development area from the test paper detection area; carrying out mapping matching on the standardized color feature vector and a standard colorimetric database to obtain a colorimetric matching value, carrying out color abnormality identification according to the colorimetric matching value, comparing the color abnormality with a preset abnormal value to obtain a test paper colorimetric analysis result, and carrying out self-adaptive correction on the test paper colorimetric analysis result with abnormality; and constructing a personalized colorimetric model according to the colorimetric matching value in combination with a historical colorimetric matching value, and performing health trend analysis and early warning.

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 patient line state detector for detecting whether a patient line is primed before it is to be connected to the patient. The patient line state detector can also the ability to detect whether a patient line has been properly mounted for priming. Both patient line presence / absence and fill state can be determined using an optical system, e.g., one that employs a single optical sensor.

A fluid handling cassette, such as that useable with an automated peritoneal dialysis (APD) cycler device or other infusion apparatus, may include a generally planar body having at least one pump chamber formed as a depression in a first side of the body and a plurality of flowpaths for a fluid that includes a channel. A patient line port may be arranged for connection to a patient line and be in fluid communication with the at least one pump chamber via at least a first one of said flowpaths, and an optional membrane may be attached to the first side of the body over the at least one pump chamber. In one embodiment, the membrane may have a pump chamber portion with an unstressed shape that generally conforms to the depression of the at least one pump chamber in the body and is arranged to be movable for movement of the fluid in a useable space of the at least one pump chamber. One or more spacers may be provided in the at least one pump chamber to prevent the membrane from contacting an inner wall of the at least one pump chamber. The patient line, a drain line, and / or a heater bag line may be positioned to be separately occludable in relation to one or more solution lines that are connectable to the cassette.

The utility model discloses a disposable drainage bag which comprises a first bag body, and the first bag body comprises a liquid storage bag with a bag connecting end and a drainage bag connector fixedly connected with the bag connecting end; the bag connecting end is provided with oppositely connected bag opening film layers; the drainage bag connector is provided with a body tube and a wing structure integrally arranged on the outer side wall of the body tube. One end of the body pipe and the wing structure are welded between the bag opening film layers, and the wing structure is flatly laid between the two bag opening film layers; the wing structure comprises connecting sheets symmetrically distributed on the two sides of the body pipe. The bag connecting end is provided with more than two welding seam strips for oppositely welding the bag opening film layers; the connecting sheet at least continuously extends from one weld strip to another weld strip.

Components for a medical infusion fluid handling system, such as an APD system, in which one or more lines (such as solution lines), spikes or other connection ports may be automatically capped and / or de-capped. This feature may provide advantages, such as a reduced likelihood of contamination since no human interaction is required to de-cap and connect the one or more lines, the spikes, or the other connection ports. For example, a fluid handling cassette may include one or more caps that cover a corresponding spike and include a raised and / or recessed feature to assist in removal of the one or more caps from the cassette. A solution line cap may include a hole and a recess, a groove or other feature to engage with a spike cap and enable removal of the spike cap.

Improvements in fluid volume measurement systems are disclosed for a pneumatically actuated diaphragm pump in general, and a peritoneal dialysis cycler using a pump cassette in particular. Pump fluid volume measurements are based on pressure measurements in a pump control chamber and a reference chamber in a two-chamber model, with different sections being modeled using a combination of adiabatic, isothermal and polytropic processes. Real time or instantaneous fluid flow measurements in a pump chamber of the diaphragm pump are also disclosed, in this case using a one-chamber ideal gas model and using a high speed processor to obtain and process pump control chamber pressures during fluid flow into or out of the pump chamber. Improved heater control circuitry is also disclosed, to provide added or redundant safety measures, or to reduce current leakage from a heater element during pulse width modulation control of the heater element. Improvements are also disclosed in an application of negative pressure during a drain phase in peritoneal dialysis therapy, and to control an amount of intraperitoneal fluid accumulation during the therapy. Improvements in efficiency are also disclosed in movement of fluid into and out of a two-pump cassette and a heater bag of the peritoneal dialysis cycler, and in synchronization of operation of two or more pumps in the peritoneal dialysis cycler or other fluid handling devices using a multi-pump arrangement.

Improvements in fluid volume measurement systems are disclosed for a pneumatically actuated diaphragm pump in general, and a peritoneal dialysis cycler using a pump cassette in particular. Pump fluid volume measurements are based on pressure measurements in a pump control chamber and a reference chamber in a two-chamber model, with different sections being modeled using a combination of adiabatic, isothermal and polytropic processes. Real time or instantaneous fluid flow measurements in a pump chamber of the diaphragm pump are also disclosed, in this case using a one-chamber ideal gas model and using a high speed processor to obtain and process pump control chamber pressures during fluid flow into or out of the pump chamber. Improved heater control circuitry is also disclosed, to provide added or redundant safety measures, or to reduce current leakage from a heater element during pulse width modulation control of the heater element. Improvements are also disclosed in an application of negative pressure during a drain phase in peritoneal dialysis therapy, and to control an amount of intraperitoneal fluid accumulation during the therapy. Improvements in efficiency are also disclosed in movement of fluid into and out of a two-pump cassette and a heater bag of the peritoneal dialysis cycler, and in synchronization of operation of two or more pumps in the peritoneal dialysis cycler or other fluid handling devices using a multi-pump arrangement.

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.

A fluid handling cassette, such as that useable with an automated peritoneal dialysis (APD) cycler device or other infusion apparatus, may include a generally planar body having at least one pump chamber formed as a depression in a first side of the body and a plurality of flowpaths for a fluid that includes a channel. A patient line port may be arranged for connection to a patient line and be in fluid communication with the at least one pump chamber via at least a first one of said flowpaths, and an optional membrane may be attached to the first side of the body over the at least one pump chamber. In one embodiment, the membrane may have a pump chamber portion with an unstressed shape that generally conforms to the depression of the at least one pump chamber in the body and is arranged to be movable for movement of the fluid in a useable space of the at least one pump chamber. One or more spacers may be provided in the at least one pump chamber to prevent the membrane from contacting an inner wall of the at least one pump chamber. The patient line, a drain line, and / or a heater bag line may be positioned to be separately occludable in relation to one or more solution lines that are connectable to the cassette.

A fluid pumping system may comprise a pump and a fluid line state detector having, a receptacle, at sensor, and an illuminator. The system may further comprise a fluid transfer set including an output line for mating into the receptacle. The system may further comprise a controller in data communication with the fluid line state detector configured to power the illuminator and monitor an output signal of the sensor when the outlet line is in the receptacle to determine a dry tube light intensity value. The controller may be further configured to govern operation of the pump to prime the output line with fluid. The controller may be further configured to power the illuminator, monitor the output signal, and halt operation of the pump when the output signal indicates the light intensity value has dropped below a primed line threshold which is dependent upon the dry tube intensity value.

A system and method for monitoring the health of dialysis patients with Raman spectroscopy measurements of one or more target analytes is described. The methods include irradiating one or more fluids of interest with light to produce one or more spectrum and detecting the spectrum with a detector. The fluids of interest are preferably those related to dialysis, including hemodialysis and peritoneal dialysis. In a preferred embodiment, the fluids are irradiated with monochromatic light, and one or more Raman spectra are detected as a result of the irradiation. The fluids may be irradiated within the dialysis tubing itself, or removed from the dialysis tubing and irradiated in a separate chamber. The Raman spectra of one or more target analytes of a dialysis patient may be followed over time or compared to one or more reference spectra, thereby providing information on the health of dialysis patients.

A system including a pumping cassette having a first side including number of valve wells and second side having a fluid bus. Each side may be covered by a flexible membrane. A control surface having a number of valve well control stations actuatable with respect to the flexible membrane covering the first side of the cassette to open and close the valve wells when the cassette is mated against the control surface may be included. A pressure distribution assembly having a positive and negative pressure source and a number of pneumatic valves may be included. A controller configured to selectively actuate the number of pneumatic valves to apply pressure against the valve well control stations in a valve pumping sequence until a volume displaced through the fluid bus of the pumping cassette from a source to a destination is within a range of a target volume may be included.

Components for a medical infusion fluid handling system, such as an APD system, in which one or more lines (such as solution lines), spikes or other connection ports may be automatically capped and / or de-capped. This feature may provide advantages, such as a reduced likelihood of contamination since no human interaction is required to de-cap and connect the lines, spikes or other connections. For example, a fluid handling cassette may include one or more caps that cover a corresponding spike and include a raised and / or recessed feature to assist in removal of the cap from the cassette. A solution line cap may include a hole and recess, groove or other feature to engage with a spike cap and enable removal of the cap.

The invention discloses a solute replacement system, peritoneal dialysis equipment and medical first-aid equipment, and the solute replacement system comprises an interface pipeline, one end of which is communicated with a human body and which comprises a first channel for outputting waste liquid from the human body and a second channel for inputting new liquid to the human body; the circulating replacement pipeline is communicated with the other end of the interface pipeline and comprises a liquid inlet pipeline which is communicated with the first channel to receive the waste liquid, a new liquid pipeline which is communicated with the second channel to output the new liquid, and a perfusion device which is connected between the liquid inlet pipeline and the new liquid pipeline in series; the perfusion device is used for receiving the waste liquid so as to remove toxins in the waste liquid and then outputting the waste liquid to the new liquid pipeline; the driving device is arranged in the interface pipeline or the circulating replacement pipeline and is used for driving the waste liquid and the new liquid to flow; and the control device is used for executing a CFPD treatment mode to control the driving device to drive the waste liquid and the new liquid to continuously flow.

The invention discloses an optical detection device for rapidly judging peritoneal dialysis outlet infection, and relates to the technical field of medical instruments, and the device comprises a collected image set obtaining module which is used for calling a light source to carry out light emission according to a preset light type sequence and carrying out image collection of different spectrums by using a high-resolution camera and an optical filter wheel, acquiring a collection image set; the multi-scale feature set obtaining module is used for traversing the collected image set to carry out multi-scale feature collection and obtaining a collected image multi-scale feature group set; the interactive iteration feature set obtaining module is used for carrying out intra-group feature interactive iteration to obtain an interactive iteration feature set; and the mapping analysis result obtaining module is used for performing infection mapping analysis based on the interactive iteration feature set to obtain a target mapping analysis result. The technical problems of low infection image recognition accuracy and poor detection result reliability in the prior art are solved, and the technical effect of improving the optical detection result reliability is achieved.

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 system including a pumping cassette having a first side including number of valve wells and second side having a fluid bus. Each side may be covered by a flexible membrane. A control surface having a number of valve well control stations actuatable with respect to the flexible membrane covering the first side of the cassette to open and close the valve wells when the cassette is mated against the control surface may be included. A pressure distribution assembly having a positive and negative pressure source and a number of pneumatic valves may be included. A controller configured to selectively actuate the number of pneumatic valves to apply pressure against the valve well control stations in a valve pumping sequence until a volume displaced through the fluid bus of the pumping cassette from a source to a destination is within a range of a target volume may be included.

This disclosure relates to systems for medical fluid pumps and related methods. In some implementations, a system includes a system for draining fluid from a peritoneal cavity of a patient comprising a microfluidic pump; a drain bag fluidly coupled to the microfluidic pump; and an inlet line coupled to the drain bag, wherein the microfluidic pump is configured to apply a negative pressure to an interior of the drain bag to draw effluent from a peritoneal cavity of the patient along the inlet line and into the drain bag. In some implementations, a system for performing peritoneal dialysis includes a microfluidic pump; a dual chamber bag fluidly coupled to the microfluidic pump, where the dual chamber bag includes an effluent chamber configured to be fluidly coupled to a peritoneal cavity of a patient; a dialysate chamber; and a flexible membrane separating the effluent chamber from the dialysate chamber.

The invention discloses a peritoneal dialysis system which comprises an abdominal cavity pipeline with the first end communicated with the abdominal cavity of a human body; the semi-permeable membrane assembly comprises a membrane, a first side and a second side, the first side and the second side are separated by the membrane, and the first side is communicated with the second end of the abdominal cavity pipeline so as to receive the abdominal cavity dialysate from the abdominal cavity pipeline and inject the abdominal cavity dialysate into the abdominal cavity of the human body; the external liquid path system comprises an external liquid pipeline communicated with the second side, and the external liquid pipeline comprises a waste liquid outlet for outputting dialysis waste liquid led out from the peritoneal dialysis liquid through the membrane; when the peritoneal dialysis solution is led out, the membrane allows moisture and small molecular solutes in the peritoneal dialysis solution to permeate into the second side and entraps a macromolecular penetrant on the first side so as to maintain the osmotic pressure of the peritoneal dialysis solution.

A system includes an extracorporeal blood treatment device and a heat exchanger for heat exchange between dialysate flowing from the extracorporeal blood treatment device and permeate to be supplied to the extracorporeal blood treatment device. The extracorporeal blood treatment device and the heat exchanger are configured as separate devices.

The present invention relates to an apparatus and a method for preparing dialyzate, wherein the apparatus has a first part and a second part that is configured as a circuit; wherein the first part comprises a water connection or a water container as well as the primary side of a filter; wherein the filter is configured to prepare purified water from the water through forward osmosis; and wherein the second part comprises the secondary side of the filter, a reservoir, a filtrate line that leads from the secondary side of the filter to the reservoir, and a line leading from the reservoir to the secondary side of the filter, with the reservoir being a container having means for connecting the container to a dialysis machine.

The utility model discloses a peritoneal dialysis connector and a screwing tool thereof, and relates to the field of peritoneal dialysis device structures, and the peritoneal dialysis connector comprises a dialysis bag connector which is used for being installed on a dialysis bag or a connecting pipe of the dialysis bag; the dialysis bag connector can be inserted into the lock cover, a through hole is formed in the lock cover, and a peritoneal dialysis catheter penetrates through the through hole and enters the lock cover to be connected with the dialysis bag connector; the lock cover can be movably connected with the other end of the dialysis bag connector; the outer radial end part of the insertion end, inserted into the lock cover, of the dialysis bag connector is gradually reduced; when the lock cover is connected with the dialysis bag connector, the inner wall of the lock cover can generate locking extrusion force on the joint of the peritoneal dialysis catheter and the dialysis bag connector. The outer diameter of the insertion end, inserted into the lock cover, of the dialysis bag connector is arranged to be of the conical structure gradually decreasing towards the end, and the step structure is arranged to be matched with the lock cover, so that the purposes of improving the installation convenience degree of the connector and avoiding liquid leakage are achieved.

The invention discloses a movable assistor for peritoneal dialysis, and relates to the technical field of peritoneal dialysis. The movable assistor for peritoneal dialysis comprises a bottom plate, a fixing rod is fixedly arranged on the top face of the bottom plate, the outer wall of the fixing rod is slidably sleeved with a lifting sleeve, a plurality of self-locking wheels are fixedly arranged on the bottom face of the bottom plate, and a lifting mechanism, a dialysis mechanism, a placing mechanism and a fixing mechanism are arranged above the bottom plate. The dialysis mechanism has the technical effects that the dialysis mechanism is composed of the monitoring part and the control part, an automatic monitoring and intelligent control system for the dialysis process is formed, two tray scales of the monitoring part can monitor the weight change of a dialysate container in real time, and the weight information is transmitted to the control calculator through a second data line; the two intelligent flow monitoring valves are installed at the bottom of the connecting pipe and can monitor the flow of dialysate in real time and transmit data through the first data line, and the calculator is controlled to analyze and process the received weight and flow information.