JP7346946B2 - blood purification device - Google Patents

Description

The present invention relates to a blood purification device.

As a prior document that discloses a dialysis apparatus in which a powder container containing raw material powder of a dialysate solution is removably held, there is JP-A No. 2018-612. In the dialysis apparatus described in Patent Document 1, the powder container is held by an upper arm and a lower arm provided on the side surface of the main body of the dialysis apparatus.

JP 2018-612 Publication

If the upper arm and the lower arm are each provided on the side of the main body of the blood purification device, the space in the width direction of the blood purification device becomes larger, and the work of attaching and removing the powder container at the side of the blood purification device becomes easier. This makes it difficult to attach and detach the powder container.

The present invention has been made in view of the above problems, and provides a blood purification device in which a powder container can be easily attached and detached while suppressing an increase in the widthwise space of the blood purification device. The purpose is to

The blood purification device based on the present invention includes a housing, a blood pump, a dialysate supply section, and a powder container holding section. The housing has a front face. A blood pump is provided at the front and connected to a blood circuit including a blood purifier. The dialysate supply unit prepares dialysate from the first stock solution and the second stock solution, and supplies the dialysate to the blood purifier. The powder container holding unit removably holds a powder container containing raw material powder for a second stock solution, introduces water into the powder container, and stores a second stock solution obtained by dissolving the raw material powder in the water. A flow path is configured to send the dialysate to the dialysate supply section. The powder container holder includes an upper arm and a lower arm. The upper arm and the lower arm are spaced apart from each other in the vertical direction. The upper arm is connected to the front surface so as to be rotatable between an open position extending in the horizontal direction and a closed position extending vertically downward, and communicates with the inside of the powder container to become a part of the flow path. It has an upper communicating hole. The lower arm is connected to the front surface so as to be rotatable between an open position extending in the horizontal direction and a closed position extending vertically upward, and communicates with the inside of the powder container to connect the other part of the flow path. It has a lower communicating hole that serves as a section. Each of the upper arm and the lower arm is provided so as to be rotatable within the outline when the housing is viewed from the front.

In one embodiment of the present invention, a recess is provided on the front surface. Each of the upper arm and the lower arm is connected to the bottom surface of the recess. The recessed portion is open to the side of the housing.

In one form of the invention, the housing further includes a protrusion. The protrusion extends horizontally on the front surface. The protrusion is provided with a drainage port for discharging the used priming fluid that primed the blood circuit. The powder container holder is located above the protrusion. The protrusion has an inclined surface that is positioned downward as it moves away from the front surface. The drain port is located on the inclined surface.

In one form of the invention, the blood pump is arranged above the powder container holder so that the blood circuit extends horizontally from the blood pump along the front surface.

According to the present invention, the powder container can be easily attached and detached while suppressing an increase in the space in the width direction of the blood purification device.

FIG. 3 is a front view showing a state in which the powder container holding section is closed in the blood purification device according to one embodiment of the present invention. FIG. 2 is a left side view of the blood purification device of FIG. 1 viewed from the direction of arrow II. FIG. 2 is a right side view of the blood purification device of FIG. 1 viewed from the direction of arrow III. FIG. 3 is a rear view of the blood purification device of FIG. 2 when viewed from the direction of arrow IV. FIG. 2 is a plan view of the blood purification device of FIG. 1 viewed from the direction of arrow V. FIG. 2 is a perspective view of the blood purification device according to one embodiment of the present invention, when viewed from the upper right, with the powder container holding section closed. FIG. 2 is a perspective view of the blood purification device according to the embodiment of the present invention, when viewed from the upper left, with the powder container holding section closed. FIG. 8 is an enlarged perspective view of section VIII in FIG. 7 of the blood purification device in which the first liquid suction nozzle is housed in the first storage hole and the second liquid suction nozzle is housed in the second storage hole. It is a perspective view which shows the state where the 1st liquid suction nozzle or the 2nd liquid suction nozzle is inserted into the tank. FIG. 2 is a perspective view of the blood purification device according to one embodiment of the present invention, when viewed from the upper right, with the powder container holder in an open state. FIG. 2 is a perspective view of the blood purification device according to one embodiment of the present invention, when viewed from the upper left, with the powder container holding section open. FIG. 2 is a perspective view from the upper right of the blood purification device according to the embodiment of the present invention in which the powder container holding section holds the powder container. FIG. 2 is a perspective view from the upper left of the blood purification device according to the embodiment of the present invention in which the powder container holding section holds the powder container. In the blood purification device 100 according to an embodiment of the present invention, a dialysate circuit when preparing a dialysate using a first stock solution contained in a tank and a second stock solution prepared in a powder container. FIG. 2 is a block diagram showing the configuration of FIG. In the blood purification device 100 according to an embodiment of the present invention, a dialysate circuit when dialysate is prepared using a first stock solution contained in a tank and a second stock solution contained in another tank. FIG. 2 is a block diagram showing the configuration of FIG.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A blood purification device according to an embodiment of the present invention will be described below with reference to the drawings. In the following description of the embodiments, the same or corresponding parts in the figures are denoted by the same reference numerals, and the description thereof will not be repeated.

FIG. 1 is a front view showing a state in which a powder container holder is closed in a blood purification device according to an embodiment of the present invention. FIG. 2 is a left side view of the blood purification apparatus of FIG. 1 viewed from the direction of arrow II. FIG. 3 is a right side view of the blood purification apparatus of FIG. 1 viewed from the direction of arrow III. FIG. 4 is a rear view of the blood purification apparatus of FIG. 2 as viewed from the direction of arrow IV. FIG. 5 is a plan view of the blood purification apparatus of FIG. 1 viewed from the direction of arrow V. FIG. 6 is a perspective view of the blood purification device according to the embodiment of the present invention, with the powder container holding section closed, viewed from the upper right. FIG. 7 is a perspective view of the blood purification device according to the embodiment of the present invention, when the powder container holding section is closed, viewed from the upper left.

As shown in FIGS. 1 to 7, a blood purification device 100 according to an embodiment of the present invention includes a housing 110, a blood pump 120, a dialysate supply section, and a powder container holding section 130. The housing 110 is provided on the trolley 10. As shown in FIGS. 3, 5, 6, and 7, the front portion 11 of the upper surface of the cart 10 is configured such that a tank, which will be described later, containing an undiluted solution of dialysate can be placed thereon. An operation panel 20 is provided on the housing 110.

The housing 110 has an approximately rectangular parallelepiped outer shape. The housing 110 has a front surface 111, a left side surface 112, a right side surface 113, a back surface 114, and a top surface 115. As shown in FIGS. 2 to 7, a grip portion 50 is provided on the back surface 114.

The front face 111 is provided with a recess 111c. In this embodiment, the recess 111c is located at the left end when the housing 110 is viewed from the front. Note that the recess 111c may be located at the right end or at the center when the housing 110 is viewed from the front.

The recess 111c is open to the side of the housing 110. That is, the recessed portion 111c is surrounded by four sides: a bottom surface, an upper wall surface, a right side wall surface, and a lower side wall surface. A powder container holder 130 is arranged inside the recess 111c.

The housing 110 further includes a protrusion 111p. The protrusion 111p extends in the horizontal direction on the front surface 111. The protruding portion 111p has a tapered shape so that the thickness in the vertical direction becomes thinner as the distance from the front surface 111 increases. The protruding portion 111p has an inclined surface that is located downward as it moves away from the front surface 111. A left-side portion of the inclined surface of the protruding portion 111p is continuous with the lower wall surface.

A blood pump 120 is provided on the front surface 111 of the housing 110. Blood pump 120 is connected to a blood circuit 30 including a blood purifier, which will be described later. Blood pump 120 is a roller pump. The blood purifier is a so-called dialyzer, and has a semipermeable membrane made of, for example, a hollow fiber membrane inside. The blood purifier has a dialysate inlet and a drain outlet, which will be described later. A coupler is fitted into each of the dialysate inlet and drain outlet. As shown in FIGS. 1 and 3 to 6, a coupler holding portion 40 is provided at the upper part of the right side surface 113 of the housing 110. As shown in FIG.

In this embodiment, the blood pump 120 is arranged above the powder container holding part 130 so that the blood circuit 30 extends horizontally from the blood pump 120 along the front surface 111. Blood pump 120 has an attachment port for blood circuit 30 that is open on the right side.

A syringe pump 140 is provided on the front surface 111 of the housing 110. In this embodiment, the syringe pump 140 is located above the blood pump 120 and is provided to drive the syringe in the horizontal direction. Furthermore, a plurality of clip portions (not shown) for holding the blood circuit 30 are provided on the front surface 111 of the casing 110.

The dialysate supply section is arranged inside the housing 110. The dialysate supply unit prepares dialysate from the first stock solution and the second stock solution, and supplies the dialysate to the blood purifier. The first stock solution is prepared by dissolving in water a first raw material powder containing at least one of calcium salts, magnesium salts, potassium salts, sodium salts, and glucose, which are part of the solute components of the dialysate. It is a liquid formulation. The second stock solution is a liquid preparation prepared by dissolving a second raw material powder containing at least sodium bicarbonate, which is another part of the solute component of the dialysate, in water.

The powder container holding unit 130 removably holds a powder container, which will be described later, in which a second raw material powder of a second stock solution is stored, and introduces water into the powder container, so that the second raw material powder is dissolved in the water. A flow path is configured to send the obtained second stock solution to the dialysate supply section. The powder container holding part 130 is located above the protruding part 111p.

Powder container holder 130 includes an upper arm 131 and a lower arm 132. The upper arm 131 and the lower arm 132 are spaced apart from each other in the vertical direction. The upper arm 131 is connected to the front surface 111 so as to be rotatable between an open position extending in the horizontal direction and a closed position extending vertically downward. The lower arm 132 is connected to the front surface 111 so as to be rotatable between an open position extending in the horizontal direction and a closed position extending vertically upward.

Each of the upper arm 131 and the lower arm 132 is connected to the bottom surface of the recess 111c. As shown in FIGS. 2 and 7, the upper arm 131 has an upper end portion 131r that is the center of rotation. The lower arm 132 has a lower end 132r that is the center of rotation. A connecting portion 133 rotatably connected to each of the upper end portion 131r and the lower end portion 132r is provided on the bottom surface of the recessed portion 111c. That is, each of the upper arm 131 and the lower arm 132 is connected to the bottom surface of the recess 111c via the connecting portion 133.

The rotational axes of upper arm 131 and lower arm 132 are located approximately horizontally. Each of the upper arm 131 and the lower arm 132 is provided so as to be rotatable within the outline when the housing 110 is viewed from the front.

As shown in FIGS. 1, 5 to 7, the protrusion 111p is provided with a drain port 150 for discharging the used priming liquid that primed the blood circuit 30. The drain port 150 is located on the inclined surface.

The protrusion 111p has a first storage hole 160 for housing a first liquid suction nozzle that can suck up the first stock solution contained in the tank and supply it to the dialysate supply unit, and A second storage hole 170 is further provided for housing a second liquid suction nozzle that can suck up the stock solution and supply it to the dialysate supply unit. Each of the first storage hole 160 and the second storage hole 170 is located on the inclined surface.

FIG. 8 is an enlarged perspective view of section VIII in FIG. 7 of the blood purification device in which the first liquid suction nozzle is housed in the first storage hole and the second liquid suction nozzle is housed in the second storage hole. It is. FIG. 9 is a perspective view showing a state in which the first liquid suction nozzle or the second liquid suction nozzle is inserted into the tank.

As shown in FIG. 8, in this embodiment, a first cap 185 that can be opened and closed is attached to the first storage hole 160. A second cap 195 that can be opened and closed is attached to the second storage hole 170. With the first cap 185 open, the first liquid suction nozzle 180 is inserted and stored in the first storage hole 160. With the second cap 195 open, the second liquid suction nozzle 190 is inserted and stored in the second storage hole 170. 1 to 3 and 5 to 7, the first cap 185, the second cap 195, the first liquid suction nozzle 180, and the second liquid suction nozzle 190 are not shown.

As shown in FIGS. 8 and 9, the first liquid suction nozzle 180 includes a first flange portion 181, a first handle portion 182, a first connection tube 183, and a first nozzle portion 184. The first flange portion 181 closes the first storage hole 160 when the first liquid suction nozzle 180 is stored in the first storage hole 160.

The first handle portion 182 protrudes along the radial direction of the first storage hole 160. The first liquid suction nozzle 180 is locked by rotating the first handle portion 182 to one side in the circumferential direction of the first storage hole 160 when it is stored in the first storage hole 160, and is in the locked state. The lock is released by rotating the first handle portion 182 to the other side in the circumferential direction of the first storage hole 160.

The first connecting tube 183 is connected to the dialysate supply section, is pulled out from the inclined surface to the outside of the housing 110, and passes through the first handle section 182 along the radial direction. The first nozzle portion 184 is located coaxially with the first flange portion 181 and communicates with the first connecting tube 183. The first nozzle portion 184 and the first connecting tube 183 serve as a flow path for the first stock solution.

The second liquid suction nozzle 190 includes a second flange portion 191, a second handle portion 192, a second connection tube 193, and a second nozzle portion 194. The second flange portion 191 closes the second storage hole 170 when the second liquid suction nozzle 190 is stored in the second storage hole 170.

The second handle portion 192 protrudes along the radial direction of the second storage hole 170. The second liquid suction nozzle 190 is locked by rotating the second handle part 192 to one side in the circumferential direction of the second storage hole 170 when it is stored in the second storage hole 170, and is in the locked state. The lock is released by rotating the second handle portion 192 to the other side in the circumferential direction of the second storage hole 170.

The second connecting tube 193 is connected to the dialysate supply section, is pulled out from the inclined surface to the outside of the casing 110, and passes through the second handle section 192 along the radial direction. The second nozzle portion 194 is located coaxially with the second flange portion 191 and communicates with the second connecting tube 193 . The second nozzle portion 194 and the second connection tube 193 serve as a flow path for the second stock solution.

FIG. 10 is a perspective view of the blood purification device according to the embodiment of the present invention, when viewed from the upper right, with the powder container holding section open. FIG. 11 is a perspective view of the blood purification device according to the embodiment of the present invention, when viewed from the upper left, with the powder container holding section open.

As shown in FIGS. 10 and 11, the upper arm 131 is rotatably provided from a closed position extending vertically downward to an open position extending substantially horizontally about the upper end 131r. ing. The upper arm 131 has an upper communication hole 131c.

The lower arm 132 is rotatably provided from a closed position extending vertically upward to an open position extending substantially horizontally about the lower end 132r. The lower arm 132 has a lower communication hole 132c.

FIG. 12 is a perspective view from the upper right of the blood purification device according to the embodiment of the present invention in which the powder container holding section holds the powder container. FIG. 13 is a perspective view from the upper left of the blood purification device according to the embodiment of the present invention in which the powder container holding section holds the powder container.

As shown in FIGS. 12 and 13, a powder container 60 containing the second raw material powder of the second stock solution is held between an upper arm 131 and a lower arm 132. Specifically, the powder container 60 has a lower connection port 61 at the lower end and an upper connection port 62 at the upper end.

The upper communication hole 131c of the upper arm 131 is connected to the upper connection port 62, thereby communicating with the inside of the powder container 60 and becoming part of a flow path for sending the second stock solution to the dialysate supply section. The lower communication hole 132c of the lower arm 132 is connected to the lower connection port 61, thereby communicating with the inside of the powder container 60 and communicating with another part of the flow path for sending the second stock solution to the dialysate supply section. Become.

In the blood purification device 100 according to an embodiment of the present invention, dialysate is prepared using the first stock solution contained in the tank 80 and the second stock solution prepared in the powder container 60; A dialysate may be prepared using the first stock solution contained in the tank 80 and the second stock solution contained in another tank 80. These two aspects can be selected as appropriate.

FIG. 14 shows a case where a dialysate is prepared using a first stock solution contained in a tank and a second stock solution prepared in a powder container in the blood purification device 100 according to an embodiment of the present invention. , is a block diagram showing the configuration of a dialysate circuit.

As shown in FIG. 14, in a blood purification device 100 according to an embodiment of the present invention, a dialysate is prepared using a first stock solution contained in a tank 80 and a second stock solution prepared in a powder container 60. When preparing the dialysate, the first stock solution contained in the tank 80 is sucked up by the first liquid suction nozzle 180 and supplied to the dialysate supply section 90.

On the other hand, in supplying the second stock solution, first, reverse osmosis water supplied from the reverse osmosis water supply device 69 flows into the powder container 60 through the lower communication hole 132c of the lower arm 132. A second stock solution obtained by dissolving the second raw material powder in reverse osmosis water in the powder container 60 is supplied to the dialysate supply unit 90 through the upper communication hole 131c of the upper arm 131.

Note that the flow direction of the liquid in the powder container 60 may be reversed. In this case, reverse osmosis water supplied from the reverse osmosis water supply device 69 flows into the powder container 60 through the upper communication hole 131c of the upper arm 131. A second stock solution obtained by dissolving the second raw material powder in reverse osmosis water in the powder container 60 is supplied to the dialysate supply unit 90 through the lower communication hole 132c of the lower arm 132.

The dialysate 2 prepared by mixing the first stock solution, the second stock solution, and reverse osmosis water in the dialysate supply section 90 flows into the blood purifier 70 from the dialysate inlet 71 through the dialysate supply coupler. . The used dialysate 3 discharged from the drain outlet 72 is drained through the dialysate recovery coupler. Blood 1 flowing through blood circuit 30 passes through blood purifier 70 .

FIG. 15 shows a case where dialysate is prepared using a first stock solution contained in a tank and a second stock solution contained in another tank in the blood purification device 100 according to an embodiment of the present invention. , is a block diagram showing the configuration of a dialysate circuit.

As shown in FIG. 15, in a blood purification apparatus 100 according to an embodiment of the present invention, a dialysate is When preparing dialysis solution, the first stock solution contained in the tank 80 is sucked up by the first liquid suction nozzle 180 and supplied to the dialysate supply unit 90, and the second stock solution contained in another tank 80 is sucked up by the first liquid suction nozzle 180 and supplied to the dialysate supply unit 90. The fluid is sucked up by the fluid nozzle 190 and supplied to the dialysate supply section 90 .

The dialysate 2 prepared by mixing the first stock solution, the second stock solution, and reverse osmosis water in the dialysate supply section 90 flows into the blood purifier 70 from the dialysate inlet 71 through the dialysate supply coupler. . The used dialysate 3 discharged from the drain outlet 72 is drained through the dialysate recovery coupler.

In the blood purification device 100 according to one embodiment of the present invention, the powder container holding section 130 includes an upper arm 131 and a lower arm 132. The upper arm 131 and the lower arm 132 are spaced apart from each other in the vertical direction. The upper arm 131 is connected to the front surface 111 of the casing 110 so as to be rotatable between an open position extending in the horizontal direction and a closed position extending vertically downward, and communicates with the inside of the powder container 60 to open the second It has an upper communication hole 131c that becomes a part of the flow path for sending the stock solution to the dialysate supply section 90. The lower arm 132 is connected to the front face 111 so as to be rotatable between an open position extending in the horizontal direction and a closed position extending vertically upward, and communicates with the inside of the powder container 60 to open the flow path other than the above-mentioned flow path. It has a lower communicating hole 132c that becomes a part of the lower side. Each of the upper arm 131 and the lower arm 132 is provided so as to be rotatable within the outline when the housing 110 is viewed from the front 111.

Thereby, the powder container holding part 130 does not protrude to the side of the blood purification apparatus 100, so that it is possible to suppress the space in the width direction of the blood purification apparatus 100 from increasing. Moreover, since the work of attaching and detaching the powder container 60 can be performed in front of the blood purification apparatus 100, workability is good and the powder container 60 can be easily attached and detached.

Further, even when the powder container 60 is attached, the entire blood purification device 100 can be accommodated within the area occupied by the cart 10. Furthermore, since the powder container holder 130 is substantially flat in the closed state, it is possible to prevent the powder container holder 130 from becoming an obstacle when the powder container 60 is not attached.

In the blood purification device 100 according to one embodiment of the present invention, a recess 111c is provided in the front surface 111. Each of the upper arm 131 and the lower arm 132 is connected to the bottom surface of the recess 111c. The recess 111c is open to the side of the housing 110. Thereby, it is possible to insert a hand into the inside of the recess 111c from the open part of the recess 111c, so the area around the powder container holding part 130 can be easily cleaned.

In the blood purification device 100 according to one embodiment of the present invention, the housing 110 further includes a protrusion 111p. The protrusion 111p extends in the horizontal direction on the front surface 111. The protrusion 111p is provided with a drain port 150 for discharging the used priming liquid that has been cleaned and air removed from the blood circuit 30. The powder container holding part 130 is located above the protruding part 111p. The protruding portion 111p has an inclined surface that is located downward as it moves away from the front surface 111. The drain port 150 is located on the inclined surface. Thereby, the working posture of the medical worker when connecting the blood circuit 30 to the drainage port 150 can be made easier.

In the blood purification device 100 according to an embodiment of the present invention, the blood pump 120 is configured such that the blood circuit 30 extends horizontally from the blood pump 120 along the front surface 111 above the powder container holding section 130. It is located in This makes it possible to arrange the powder container holding part 130 and the blood pump 120 in close proximity to each other on the front surface 111, making it possible to secure a large arrangement space for the blood circuit 30.

Note that the above-described embodiments disclosed herein are illustrative in all respects, and are not the basis for a limited interpretation. Therefore, the technical scope of the present invention should not be interpreted only by the above-described embodiments, but should be defined based on the claims. In addition, all changes within the meaning and scope of the claims are included.

1 blood, 2 dialysate, 3 used dialysate, 10 cart, 11 front part of top of cart, 20 operation panel, 30 blood circuit, 40 coupler holding part, 50 grip part, 60 powder container, 61 lower connection port , 62 upper connection port, 69 reverse osmosis water supply device, 70 blood purifier, 71 dialysate inlet, 72 drain outlet, 80 tank, 90 dialysate supply section, 100 blood purification device, 110 housing, 111 front, 111c recess, 111p protrusion, 112 left side, 113 right side, 114 back, 115 top, 120 blood pump, 130 powder container holder, 131 upper arm, 131c upper communication hole, 131r upper end, 132 lower arm, 132c Lower communication hole, 132r Lower end, 133 Connection part, 140 Syringe pump, 150 Drain port, 160 First storage hole, 170 Second storage hole, 180 First liquid suction nozzle, 181 First flange, 182 First Handle part, 183 First connection tube, 184 First nozzle part, 185 First cap, 190 Second liquid suction nozzle, 191 Second flange part, 192 Second handle part, 193 Second connection tube, 194 Second nozzle part , 195 Second Cap.

Claims (3)

a casing having a front surface;
a blood pump provided at the front and connected to a blood circuit including a blood purifier;
a dialysate supply unit that prepares a dialysate from a first stock solution and a second stock solution and supplies the dialysate to the blood purifier;
A powder container containing raw material powder for the second stock solution is detachably held, water is introduced into the powder container, and the second stock solution obtained by dissolving the raw material powder in the water is added to the powder container. A powder container holding part that constitutes a flow path for sending to the dialysate supply part,
The powder container holder includes an upper arm and a lower arm that are spaced apart from each other in the vertical direction,
The upper arm is connected to the front surface so as to be rotatable between an open position extending in the horizontal direction and a closed position extending vertically downward, and communicates with the interior of the powder container to partially form the flow path. It has an upper communicating hole,
The lower arm is connected to the front surface so as to be rotatable between an open position extending in the horizontal direction and a closed position extending vertically upward, and communicates with the inside of the powder container to open the flow path. It has a lower communication hole that becomes part of the
Each of the upper arm and the lower arm is rotatably provided within an outline when the housing is viewed from the front ,
The casing further includes a protrusion extending horizontally on the front surface and provided with a drainage port for discharging the used priming fluid that primed the blood circuit,
The powder container holding part is located above the protrusion,
The protrusion has an inclined surface that is positioned downward as it moves away from the front surface,
The blood purification device , wherein the drainage port is located on the inclined surface . A recess is provided on the front surface,
Each of the upper arm and the lower arm is connected to a bottom surface of the recess,
The blood purification device according to claim 1, wherein the recess is open to the side of the casing. The blood pump is arranged above the powder container holding part so that the blood circuit extends horizontally from the blood pump along the front surface. blood purification device.

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