22 results about "Dialysis unit" patented technology

A blood circulation system for an extracorporeal blood treatment machine includes: an arterial circulation section; a venous circulation section; a dynamic bubble trap; and an air separator. The blood circulation system conducts blood, during the operation of a blood pump of the extracorporeal blood treatment machine, from a patient to a dialysis unit and from the dialysis unit to the patient. The blood circulation system also includes a recirculation or branch line connected to the bubble trap in order to return part of the blood that flows into the bubble trap into the blood circulation system, upstream of the bubble trap. An extracorporeal blood treatment machine includes the blood circulation system.

The utility model relates to the technical field of water treatment, in particular to a dialysis device for wastewater treatment, which comprises an assembly seat, at least one group of diffusion dialysis units, a liquid distribution plate and a temperature distribution part, the diffusion dialysis units are equidistantly arranged in the assembly seat, the liquid distribution plate is connected with the diffusion dialysis units, and the temperature distribution part is connected with the assembly seat. And the temperature distribution part is arranged on the diffusion dialysis unit. By means of the assembly composed of the assembly base, the diffusion dialysis unit, the liquid preparation plate and the temperature preparation part, treatment of waste water containing waste alkali liquid is achieved, a dialysis mechanism is provided, the diffusion rate of ions in the waste alkali liquid is increased by increasing the temperature in the diffusion dialysis unit and increasing the thermal movement speed of molecules, the ions are helped to pass through an ion exchange membrane more quickly, and the ion exchange efficiency is improved. The diffusion dialysis efficiency is improved.

This invention discloses a closed-loop acid-base recovery system and method for the resource recovery of weak organic acid salt wastewater. The front-end neutralization unit neutralizes fresh organic acid wastewater with alkali solution to generate a weak organic acid salt solution to be treated, which is then fed into a diffusion dialysis unit. The diffusion dialysis unit is divided into a diffusion liquid channel and a receiving liquid channel by a diffusion dialysis anion exchange membrane, achieving pre-enrichment of organic acid ions through concentration difference. The bipolar membrane electrodialysis unit, driven by a DC electric field, breaks down the weak organic acid salt into organic acid and alkali solution. The inlet of the acid chamber is connected to the diffusion liquid outlet of the diffusion dialysis unit, and all the produced dilute organic acid solution is transported to the diffusion dialysis unit as an acid receiving liquid for recycling. All the regenerated alkali solution produced in the alkali chamber is transported to the front-end neutralization unit for recycling. The receiving liquid outlet of the diffusion dialysis unit is connected to an acid product collection unit. This invention fundamentally inhibits the back diffusion of weak acid molecules, achieving efficient recovery of organic acids and recycling of alkali solution.

The utility model relates to the field of water treatment equipment, in particular to a device for treating and recycling waste water after surface treatment of an aluminum material, which comprises a pretreatment unit, a dialysis unit, a separated liquid collecting tank and a separated water collecting tank, the dialysis unit is provided with a barrel body and a dialysis membrane core which divides the barrel body into an annular cavity, a purified water inlet and a separated water outlet are formed in the side wall of the barrel body, the pretreatment unit is arranged at the front end of the dialysis unit and is communicated with the dialysis unit through a pipeline with a suction pump, and the pretreatment unit can receive wastewater provided by an aluminum material surface treatment production line; the dialysis unit can separate out acidic water liquid and then feed the acidic water liquid into an aluminum material surface treatment production line for reuse. According to the wastewater treating and recycling device disclosed by the utility model, acidic water liquid in wastewater is separated out by utilizing the dialysis membrane prepared from the anion exchange membrane and purified water fed from the outer side of the dialysis membrane core, and then the acidic water liquid is directly fed back to a production line for cleaning and recycling, so that resources can be saved, and the production cost can be reduced.

Apparatus and methods for performing ex-vivo perfusion of an organ are disclosed. In one arrangement, an organ receiving unit (4) receives an ex-vivo organ and provides fluidic connections to a vasculature of the received organ. A first conduit system defines a perfusate flow circuit (21) including a flow path through the vasculature of the received organ. A perfusate pumping system (14) drives a circulatory flow of perfusate in the perfusate flow circuit and through the vasculature of the received organ. A second conduit system defines a dialysate flow circuit (22). A dialysate pumping system drives a circulatory flow of a dialysate in the dialysate flow circuit. A dialysis unit processes the perfusate using the dialysate, the dialysis unit comprising a membrane configured to contact the perfusate in the perfusate flow circuit on one side of the membrane and the dialysate in the dialysate flow circuit on the other side of the membrane. The membrane allows material to pass between the perfusate flow circuit and the dialysate flow circuit as a transmembrane flux.

In some examples, an article includes a housing configured to receive a fluid for dialysis. The housing defines an interior surface configured to contact the fluid when the fluid is received in the housing. The interior surface includes at least one antimicrobial region. The at least one antimicrobial region defines a microscale texture configured to resist adhesion of bacteria and resist formation of biofilm. The microscale texture includes a plurality of microscale protrusions extending from the interior surface. In some examples, a system includes a dialysis container including the article and a dialysis unit coupled to the dialysis container.

A blood circuit assembly with a vial holder for a blood pump cassette with a circular receiver and pads to center the vial holder. A blood circuit assembly may include a single, unitary member that defines portions of a pair of blood pumps, control valves, channels to accurately position flexible tubing for an occluder, an air trap support, and / or other portions of the assembly. The occluder door interaction with the unitary member provides added safety checks. A blood circuit assembly engagement device may assist with retaining a blood circuit assembly on the dialysis unit, and / or with removal of the assembly. A dialysate circuit assembly includes a balance pod with a stiffening elements to improve durability.

In some examples, an article includes a housing configured to receive a fluid for dialysis. The housing defines an interior surface configured to contact the fluid when the fluid is received in the housing. The interior surface includes at least one antimicrobial region. The at least one antimicrobial region defines a microscale texture configured to resist adhesion of bacteria and resist formation of biofilm. The microscale texture includes a plurality of microscale protrusions extending from the interior surface. In some examples, a system includes a dialysis container including the article and a dialysis unit coupled to the dialysis container.

The objective of the present invention is to provide an emergency dialysis system that can continuously supply water for dialysis in a stable manner even during natural disasters. [Solution] An emergency dialysis system 1 has an emergency dialysis unit 10 that performs artificial dialysis using dialysis water. The emergency dialysis unit 10 includes a water intake device 11 that takes in raw water from a natural water source and removes foreign matter, a water purification treatment device 20 that purifies the raw water into dialysis water, artificial dialysis machines 13A-13E that perform artificial dialysis using the purified water, a waste treatment facility 14 that collects medical waste, hospital beds 30A-30E installed in temporary housing 15, and artificial dialysis machines 13A-13E.

Systems and apparatuses for regenerating used dialysis fluid are described herein. In an embodiment, a regenerative dialysis fluid system includes a dialysis unit configured to generate used dialysis fluid including urea and a urea separation unit configured to separate at least a portion of the urea from the used dialysis fluid into a secondary fluid. The urea separation unit includes a membrane separating a dialysis fluid chamber from a urea chamber. The membrane includes at least one of a positive charge to prevent positive ions from transporting across the membrane and a negative charge to prevent negative ions from transporting across the membrane.

The invention discloses a method for recovering acid in chemical polishing liquid cleaning water by combining resin adsorption and diffusion dialysis, belongs to the technical field of industrial waste liquid resourceful treatment, and aims to solve the technical problem that the purity and the concentration of purified acid recovered in the prior art need to be further improved. The method specifically comprises the following steps: introducing chemical polishing liquid cleaning water into an adsorption unit to obtain a dilute acid solution, introducing the dilute acid solution into a concentration unit for concentration to obtain recycled acid meeting the recycling standard of a chemical polishing tank, and after the adsorption unit achieves adsorption saturation, passing through a cleaning unit and then introducing into a desorption unit for desorption to obtain the recycled acid meeting the recycling standard of the chemical polishing tank. The adsorption liquid is introduced into a diffusion dialysis unit, purified acid and residual liquid are obtained, the finally obtained purified acid is circularly used for desorption treatment, and the residual liquid is directly discharged after being neutralized and filtered. The preparation of the cation adsorption resin is combined with the process flow, so that the purity and the concentration of the recovered acid are improved.

The invention discloses an integrated treatment system for ammonia nitrogen sulfate wastewater, which comprises a deamination membrane separation unit, a diffusion dialysis unit and an evaporative crystallization unit, the deamination membrane separation unit comprises a deamination membrane tank, an absorption liquid circulation tank and a concentrated sulfuric acid storage tank, the wastewater and sulfuric acid are introduced into the deamination membrane tank to respectively produce deamination produced water and a first mixed solution, and the first mixed solution and high-concentration sulfuric acid in the concentrated sulfuric acid storage tank are introduced into the absorption liquid circulation tank; the diffusion dialysis unit comprises a pure water storage tank, a diffusion dialysis tank, a raffinate tank and a recycled acid tank, pure water in the pure water storage tank and the first mixed solution are both led to a diffusion dialysis system, raffinate and recycled acid are respectively produced, the raffinate is a second mixed solution, the recycled acid is a third mixed solution, and the third mixed solution and pure water in the pure water storage tank are both led to an absorption liquid circulation tank; leading the second mixed solution to an evaporative crystallization unit to obtain an ammonium sulfate solid. The method provided by the invention can realize efficient removal of ammonia nitrogen, cyclic regeneration of sulfuric acid and resource recycling of ammonium sulfate by-products.

To provide various systems and methods for performing hemodialysis more efficiently, easily and / or at a lower cost.SOLUTION: A hemodialysis system (6000) comprises a dialysis unit (6001) and a user interface unit (6002) for displaying safety-critical information about a dialysis process. The hemodialysis system may include a dialysate flow path that includes a balancing circuit, a mixing circuit, and / or a directing circuit. The circuits may be defined in one or more cassettes. The fluid circuit may be at least partially spatially and / or thermally isolated from electrical components of the system. A gas supply is provided in fluid communication with the dialysate flow path and / or the dialyzer to force dialysate through the dialyzer and return blood to the patient.SELECTED DRAWING: Figure 61

The utility model discloses a modularized hollow fiber membrane dialysis unit, which belongs to the technical field of dialyzers and comprises a cylinder and a membrane wire mounting part. The upper and lower sides of the cylinder are provided with a dialysate inlet and a dialysate outlet, and the two ends of the cylinder are fixedly connected with an upper connector and a lower connector which are respectively connected with end covers with a blood inlet and a blood outlet; the connector is circumferentially provided with a stepped hole and a limiting nail, the membrane wire mounting piece comprises a packaging piece and an annular inner pressing piece, one side of the packaging piece is provided with a cutting part, the other side of the packaging piece is provided with a positioning groove, the circumferential direction of the packaging piece is provided with a limiting groove matched with the limiting nail, and the inner pressing piece is in threaded connection with the connector and is movably sealed with the cutting part. In the design, the membrane tows and the packaging pieces can be sealed and prefabricated in batches in advance, the dialysis unit does not need to be integrally replaced during replacement, the dialysis unit can be rapidly replaced by disassembling the end cover, the inner pressing piece and the limiting nail, and the maintenance time is greatly shortened; positioning of the packaging piece is achieved through the limiting structure, stable sealing is formed through threaded pressing of the inner pressing piece, and dialysis safety is guaranteed.

The challenge is to provide an emergency dialysis system that can continuously supply dialysis water stably even during natural disasters. [Solution] The emergency dialysis system 1 includes an emergency dialysis unit 10 that performs hemodialysis using dialysis water. The emergency dialysis unit 10 includes a water intake device 11 that takes in raw water from a natural water source and removes foreign matter, a water purification device 20 that purifies the raw water into dialysis water, hemodialysis machines 13A to 13E that perform hemodialysis using the purified water, a waste treatment facility 14 that collects medical waste, and hospital beds 30A to 30E and hemodialysis machines 13A to 13E installed in a temporary building 15.

In order to efficiently monitor a reaction, a dialysis unit (3) is provided in a main body of a culture tank (1) filled with a culture solution. In the dialysis unit (3), a dialysis membrane (31) through which a substance having a molecular weight smaller than the molecular weights of proteins is to be passed is provided. Each of a pretreatment unit (4) for performing a pretreatment of a low-molecular-weight substance (M) collected by the dialysis unit (3), a first solvent tank in which a first solvent is stored, and a first liquid-feeding unit for feeding the first solvent stored in the first solvent tank to the dialysis unit (3) is communicatively connected to the dialysis unit (3).

The present disclosure relates to a blood circulation system (6) for an extracorporeal blood treatment machine (1), comprising: an arterial circulation part (2); a venous circulation part (5); a dynamic bubble trap (7); and an air separator (10; 11), wherein the blood circulation system (6) is designed to guide blood from a patient to a dialysis unit (3) and from the dialysis unit (3) to the patient during operation of a blood pump (4) of the extracorporeal blood treatment machine (1); and comprises a recirculation or branch line (8) connected to the bubble trap (7) so as to return part of the blood flowing into the bubble trap (7) to the blood circulation system (6) upstream of the bubble trap (7). The present disclosure also relates to an extracorporeal blood treatment machine (1) comprising the blood circulation system (6) according to the present disclosure.

The invention relates to the technical field of medical treatment, in particular to an intelligent biological renal dialysis treatment device which comprises a data acquisition module, a data monitoring module and a biological renal dialysis module. The data acquisition module is used for acquiring basic information, blood data, historical examination data and treatment data of a patient. The data monitoring module is used for generating a treatment scheme, performing personalized adjustment on the treatment scheme, and transmitting the adjusted treatment scheme to the biological kidney dialysis module; the biological kidney dialysis module comprises a bioreactor unit, a portable unit and a dialysis unit, the bioreactor unit is used for simulating the structure and function of the kidney and assisting a user in blood ultrafiltration, blood transportation, toxin removal, metabolism assistance, endocrine assistance and immunoregulation; the biological kidney dialysis module is further used for receiving the adjusted treatment scheme and adjusting the bioreactor unit according to the adjusted treatment scheme. The structure is complete, and the treatment effect can be improved.

The invention discloses a hard carbon product purification wastewater and mixed acid recycling system, which realizes high-efficiency recycling of mixed acid and wastewater based on heat recovery through high-efficiency cooperation of a purification unit, a diffusion dialysis unit, an evaporation unit, a washing unit and other units and integration of a plurality of resource recovery paths, reduces the use amount of a neutralizing agent by more than 70%, and reduces the energy consumption by more than 70%. And the unification of environmental benefits and economic benefits is realized.

The invention relates to the technical field of waste liquid resourceful treatment, and discloses an in-situ quality-divided resourceful recycling method and system for chemical polishing waste acid liquid, the system adopts a nanofiltration and diffusion dialysis targeted coupling process, a nanofiltration unit firstly separates waste acid into low-aluminum first recycled acid and aluminum-rich nanofiltration concentrated liquid; when the diffusion dialysis unit treats the nanofiltration concentrated solution, the synergistic effect that high-concentration aluminum ions inhibit transmembrane migration is utilized, the one-way separation efficiency and the recovery rate of acid and aluminum are both larger than 90%, the system mixes and concentrates two streams of recovered acid through the acid evaporation concentration unit, clean condensate water is reused for diffusion dialysis, water balance and near-zero emission of the system are achieved, and the energy consumption of the system is reduced. The aluminum-rich residual liquid can be used for preparing industrial-grade aluminum sulfate through impurity removal and crystallization, aluminum phosphate is obtained under precipitation operation, intelligent integrated control of flow and load is combined, the fluctuation problem of multi-unit series connection is solved, and efficient waste acid recycling and optimal operation energy efficiency are achieved.