49 results about "Dialysis unit" patented technology

A blood line connector for a blood circuit of a hemodialysis unit with an ability to make two different types of fluid tight connections, e.g., a screw-type connection with a luer connector at a patient access and a press-in type connection with a dialysate circuit. The blood line connector may include a tube connection end arranged to sealingly engage with a blood circuit tube, and a patient access connection end with a frustoconical member having an internally threaded portion arranged to engage with an externally threaded patient access, and a pair of locking arms extending rearwardly from the frustoconical member. The locking arms may each have a finger depression portion and a barbed portion, and may be arranged to engage with a mating connector on the dialysis unit at the barbed portions to lock the frustoconical member in sealing engagement with the mating connector when making a press-in type connection.

An air trap for a blood circuit and method for removing air from blood in a dialysis unit. The air trap may include a blood inlet supply line, a blood outlet supply line, and a container having an approximately spherical internal wall, an inlet at a top end of the container connected to the blood inlet supply line, and an outlet at a bottom end of the container connected to the blood outlet supply line. The inlet may be offset from a vertical axis of the approximately spherical internal wall such that blood entering the container is directed to flow in a spiral-like path. The inlet port may be arranged to introduce blood into the container in a direction that is approximately tangential to the approximately spherical inner wall of the container and/or in a direction that is approximately perpendicular to the vertical axis of the container.

A drain cassette for a dialysis unit has a fluid channel between venous and arterial connection ports, and a valve may controllably open and close fluid communication between a drain outlet port and the venous connection port or the arterial connection port. A blood circuit assembly and drain cassette may be removable from the dialysis unit, e.g., by hand and without the use of tools. 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. 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. An actuator may operate a retainer element and an ejector element that interact with the assembly.

The invention relates to remote controlled blood cleaning of a patient (P). A dialysis unit (110) treats the patient's (P) blood in accordance with a prescribed therapy. The dialysis unit (110) has a bi-directional wireless interface (110W-120W) towards a gateway unit (120), which is further connected (125) to a remote host (140) via at least one interconnecting network (130). Thus, therapy related parameters (D_bp, D_r, d_h, D_w) can be transmitted from the dialysis unit (110) to the remote host (140). It is also rendered possible for the remote host (140) to transmit control data (D_ctr1) to the dialysis unit (110), the control data (D_ctr1) influencing the prescribed therapy being, or to be, executed by the dialysis unit (1 10).

A dialyzer mount arranged to support a plurality of differently sized and/or shaped dialyzer units and to accommodate different distances between dialysate connections on the dialyzer units. The dialyzer mount, which may be located on a front panel of the dialysis unit, may include a pair of flange portions that are each arranged to engage with a respective dialysate quick-connect fitting connected to a dialysate port of the dialyzer. Each flange portion may be arranged to engage with a groove on the quick connect fitting that is located between a portion of the base of the quick connect fitting and a slide element of the quick connect fitting. One flange portion may include an adjustable support that is moveable, e.g., in a vertical direction.

A method and a device for supply of a dialyser in a dialysis unit with dialysis fluid is disclosed. At least one dialysis fluid concentrate is mixed with water to produce the dialysis fluid. The dialysis fluid concentrate is prepared in a reservoir unit in a given amount. A control and arithmetic unit calculates the dialysis fluid rate (Qd) such that, after a given treatment time (T<SB>B</SB>) has passed, a given residual amount of dialysis fluid concentrate or no residual amount remains in the reservoir unit. It is preferable to empty the reservoir unit by the end of treatment.

The invention provides a blood purification device and a blood purification system constructed by the same, and belongs to the field of blood purification treatment instruments. The blood purification device comprises a perfusion unit, a dialysis unit and a connecting unit. The perfusion unit comprises an adsorption column, a filter cavity of the adsorption column is divided into two or more filter layers through a division board in the axial direction of the adsorption column, and a plurality of communicating holes used for making the filter layers on the two sides of the division board communicated are formed in the division board. The dialysis unit comprises a dialysis column. The connecting unit comprises a first connecting end opening, a second connecting end opening and an opening and closing switch used for controlling communication between the first connecting end opening and the second connecting end opening, the first connecting end opening is used for being fixedly connected with one end opening of the adsorption column in a sealed mode, and the second connecting end opening is used for being fixedly connected with one end opening of the dialysis column in a sealed mode. The blood purification device increases the rate of blood purification treatment on the premise of improving the safety of blood purification treatment.

A low-cost non-pollution process for desalinating seawater and reclaiming its resources includes such steps as pre-treating seawater for cleaning it, concentrating by electric dialysis unit and low-temp vacuumizing pump to obtain saturated saline and diluted saline, extracting various chemicals from said saturated saline, extracting fresh water from diluted saline, and returning the residual saline back to seawater cleaning pool.

The invention provides a micro-device for removing a cell cryoprotective agent on the basis of a multistage dialysis method. The micro-device comprises an upper chip with a first channel, a lower chip with a second channel, and a porous membrane, wherein the porous membrane is arranged between the dialysis units of the upper chip and the dialysis units of the lower chip; the first channel comprises a cell suspension channel and four dialysis units; the second channel comprises a dialysis liquid generating area, four dialysis units and a dialysis liquid collecting area; the dialysis units of the first channel, the dialysis units of the second channel and the porous membrane form a dialysis executing area. When the micro-device operates, the dialysis liquid generating area of the second channel generates gradient-concentration and variable-flow dialysis liquid, and the dialysis liquid flows into the dialysis executing area to dialyze the cell suspension in the dialysis units of the first channel. The micro-device has the advantages that the micro-device can effectively remove the cryoprotective agent in the cell suspension, reduce cell mechanical damage and osmotic pressure damage, and increase cell survival rate and recycling rate.

The invention provides a blood purifying apparatus and a blood purifying system established based on the blood purifying apparatus, and belongs to the field of medical apparatuses. The blood purifying apparatus comprises a perfusion unit, a dialysis unit, a connection unit and a control unit. The perfusion unit comprises a perfusion chamber, and the inlet of the perfusion chamber is the artery port of the blood purifying apparatus. The dialysis unit comprises a dialysis chamber, and the outlet of the dialysis chamber is a vein port of the blood purifying apparatus. The connection unit comprises a housing and a separator plate; the space surrounded by the housing is divided into a first chamber and a second chamber which are mutually independent; the first chamber is the perfusion chamber; and the second chamber is the dialysis chamber. A dialysate inlet and a dialysate outlet are arranged in the side wall of the dialysis chamber in the housing. The control unit comprises a control switch and an external connection port. The control switch is used for selectively connect any two of the outlet of the perfusion chamber, the inlet of the dialysis chamber and the external connection port. According to the invention, the safety and the operation convenience for blood purifying treatment are improved.

The invention discloses a dialysis tube for hemodialysis and relates to the field of medical equipment. The dialysis tube for hemodialysis provided by the present invention comprises a dialysis part and a connection part, the connection part is connected to the dialysis part; the dialysis part comprises a dialysis outer tube, a dialysis inner tube and a dialysis membrane, and the dialysis outer tube is sleeved on the outer periphery of the dialysis inner tube and There is a gap between the dialysis inner tube and the outer wall of the dialysis inner tube covered by the dialysis membrane; the anticoagulant drug is fixed on the surface of the dialysis membrane; the dialysis inner tube has a U-shaped or V-shaped structure, and the openings are the liquid inlet and outlet respectively. The liquid port; the liquid inlet and the liquid outlet pass through the connection part. The dialysis part of the dialysis device is small in size and can be directly placed in the human artery for hemodialysis without taking blood out of the body and then going through the machine for hemodialysis, so it has no effect on human blood pressure and is more economical, safe and less traumatic than extracorporeal hemodialysis ; It can be indwelling in the blood vessel for multiple uses to continuously perform hemodialysis for the patient.

The invention discloses a collagen extraction and purification system. The collagen extraction and purification system comprises the following devices of a degreasing tank, a leaching device, a crusher, an enzymolysis tank, a refrigerated centrifuge, an alkali-washed tank, a salting-out unit, a filter unit, a dialysis unit and a freeze drying unit which communicate with each other in sequence, wherein the degreasing tank and the leaching device degrease raw materials, the crusher crushes the degreased raw materials, the enzymolysis tank conducts enzymolysis treatment on the crushed raw materials, the refrigerated centrifuge conducts refrigerated centrifugation treatment on enzymatic hydrolysate, the alkali-washed tank conducts alkali washing treatment on precipitates obtained by refrigerated centrifugation, the salting-out unit conducts salting-out treatment on alkali wash water, the filter unit and the dialysis unit purify coarse collagen subjected to salting-out, and the freeze drying unit cures a purified collagen solution. The collagen extraction and purification system is high in extraction efficiency, and the purity of obtained products is high.

The invention relates to a reduced-injection standardized discharge method for high-sulfur wastewater in oil and gas fields. The method includes the following steps: 1) removing majority of H2S in the high-sulfur wastewater through negative pressure desulfurization; 2) performing chemical reaction to residual H2S in the water generated through the negative pressure desulfurization to form precipitates; 3) performing flocculating settlement to the water generated through the chemical reaction desulfurization; 4) filtering the water generated by the flocculating settlement through a ceramic membrane filtration unit; 5) separating and concentrating the water generated through the ceramic membrane filtration in a high-effective electro-dialysis unit; and 6) performing ozone catalytic oxidization to the fresh water generated through the high-effective electro-dialysis, and discharging the water, which meets the standards, after the ozone catalytic oxidization. By means of the reduced-injection standardized discharge method, sulfides, suspension solids, organic matters, chlorides and oil in the high-sulfur wastewater are deeply removed, and the sulfur content, suspension solid content and oil content of eletro-dialyzed concentrated water satisfy standard of reinjection water of oil and gas fields. The water outputted after the ozone catalytic oxidization meets the standard and is discharged.

A system and method for solution exchange particularly for patients requiring peritoneal dialysis. The system comprises a device (1) which is portable and is particularly suitable for patients requiring overnight exchanges and additional exchanges. The apparatus (1) includes an operator touch control panel (10) operatively connected to a cabinet (26) with a heater (12) installed therein. The chamber (26) holds a solution bag (18) and is selectively opened and closed by a cover (28). A drain pan (30) holds the drain bag (20) and has a weighing pan (14) mounted within the drain pan. The chamber (26) is connected to the control panel (10) by an upper arm (38), and the drain pan (30) is connected to the control panel (10) by a lower arm (42). The device (1) can be folded by releasing the upper (38) and lower (42) arms. The system (1) can thus be placed in a substantially flat state when not in use.

The invention provides a blood purification device with the perfusion and adsorption functions and a blood purification system constructed by the blood purification device. The blood purification device comprises a dialysis unit, a connecting unit and a perfusion unit. The dialysis unit comprises a dialysis column, and an inlet of the dialysis unit forms a blood inlet of the blood purification device. The connecting unit comprises a front end opening, a rear end opening and an opening and closing switch used for controlling communication between the front end opening and the rear end opening, and the front end opening is fixedly connected with an outlet end opening of the dialysis unit in a sealed mode. The perfusion unit comprises an adsorption column, a side through hole is formed in the middle of the side wall of a filter cavity of the adsorption column in the axial direction of the adsorption column, an end opening, away from the filter cavity, of the side through hole is fixedly connected with the rear end opening of the connecting unit in a sealed mode, and an inlet filter net with communicating holes is arranged between the rear end opening of the connecting unit and the filter cavity. Outlets in the two axial ends of the adsorption column form blood outlets of the blood purification device. The blood purification device can improve the safety of blood purification treatment and increase the rate of blood purification treatment.