JP4656427B2 - Liquid level adjustment method for drip chamber for priming liquid - Google Patents

Description

The present invention provides a liquid level adjustment of a drip chamber for a priming liquid formed in the middle of a priming liquid line that is connected to a priming liquid storage means that stores a predetermined volume of a priming liquid at the tip and can supply the priming liquid to a blood circuit. It is about the method.

  As shown in FIG. 5, the dialysis device as a blood purification device has an arterial blood circuit 101 in which an arterial puncture needle (not shown) is attached to the tip 101a, and a venous puncture needle (not shown) in the tip 102a. A blood circuit comprising a venous blood circuit 102, a dialyzer 103 interposed between the arterial blood circuit 101 and the venous blood circuit 102 to purify blood flowing through the blood circuit, and the arterial blood circuit 101. Blood pump 104, arterial drip chambers 105 and 107 and venous drip chamber 106 disposed in the venous blood circuit 101 and venous blood circuit 102, respectively, and a dialysis device capable of supplying dialysate to the dialyzer 103 The main body 108 is mainly constituted.

Further, from the upstream side of the blood pump 104 in the arterial blood circuit 101, the priming liquid line L101 of the priming liquid for the drip chamber 110 is formed is provided so as to extend in the middle, a predetermined amount of physiological saline to the distal end A bag 109 containing a liquid (priming liquid) is connected. However, at the time of washing and priming the blood circuit, the tip 101a of the arterial blood circuit 101 and the tip 102a of the venous blood circuit 102 before the arterial puncture needle and venous puncture needle are attached are connected by, for example, a shunt connector cap. Thus, a circulation circuit is formed, and the priming liquid line L101 is connected in the middle of the arterial blood circuit 101.

In this state, when the blood pump 104 is driven while the electromagnetic valve V1 of the priming liquid line L101 is opened, the physiological saline as the priming liquid in the bag 109 flows through the circulation circuit. When the physiological saline overflows from the overflow line L103 of the chamber 106, the driving of the blood pump 104 is stopped.

  As a result, the blood circuit before dialysis treatment can be filled with physiological saline as a priming solution, and the blood circuit cleaning and priming operations are completed. Thereafter, in order to perform dialysis treatment, an arterial puncture needle and a venous puncture needle are attached to the distal end 101a of the arterial blood circuit 101 and the distal end 102a of the venous blood circuit 102, respectively, and the patient is punctured with blood. When the pump 104 is driven, blood circulates extracorporeally in the blood circuit, and purification treatment is performed by the dialyzer 103 in the process.

Incidentally, the priming liquid for the drip chamber 110 formed in the middle of the priming liquid line L101 is of similar to arterial drip chamber 105, 107 and a venous drip chamber 106 configuration, an air layer formed therein While letting bubbles in the physiological saline solution escape to the side, the flow of the physiological saline solution can be visually confirmed. In order to adjust the liquid level in the priming liquid drip chamber 110, the following method has been conventionally employed.

That is, after the priming liquid drip chamber 110 is crushed by hand to discharge the internal air to the bag 109 side by a desired amount, the bag 109 is restored with a restoring force that the priming liquid drip chamber 110 tries to return to the original shape. A method has been employed in which a physiological saline solution is introduced and filled, or a physiological saline solution is injected while the drip chamber 110 for priming solution is inverted and returned to the state in use when a suitable amount is filled. The prior art for adjusting the liquid level in such a priming liquid drip chamber 110 does not relate to a known literature invention, so there is no prior art document to be described.

However, in the conventional method for adjusting the liquid level of the drip chamber for priming liquid , since manual work by a medical worker or the like is required, it is difficult to automatically clean and prime the blood circuit. There was a problem. In other words, in order to reduce the burden on medical personnel and the like in order to perform blood circuit cleaning and priming in an automatic process, it is necessary to automatically perform the liquid level adjustment work of the drip chamber for the priming liquid . In this case, it was exclusively by manual work, which hindered automation of cleaning and priming.

The present invention has been made in view of such circumstances, the liquid level adjustment of the priming solution for drip chamber which can be automated liquid level adjustment in drip chamber for the priming liquid that has been formed on the priming liquid line It is to provide a method.

The invention according to claim 1 comprises an arterial blood circuit in which an arterial puncture needle is attached to the tip and a venous blood circuit in which a venous puncture needle is attached to the tip, and from the arterial puncture needle to the venous puncture needle A blood circuit capable of extracorporeally circulating a patient's blood, blood purification means for purifying blood flowing between the arterial blood circuit and the venous blood circuit of the blood circuit, and the blood circuit; extending the priming liquid line capable of supplying the priming solution priming liquid storage and priming liquid container means is connected to the blood circuit of a predetermined volume at the distal end, which is formed in the middle of the priming liquid line priming in the liquid level adjusting method of the drip chamber for the priming solution in the blood purification device including a liquid for drip chamber, the priming Grayed liquid accommodated means the priming solution in the priming solution containing means in the forward direction of the priming liquid line toward the blood circuit is forced flow from an upstream side of the priming liquid for the drip chamber in the priming liquid line a downstream fulfills priming liquid, the first step of inherent air into the priming solution for drip chamber, after the first step, the forward priming liquid of the priming liquid line in the reverse direction The air in the priming liquid drip chamber is forced to flow to the upstream side of the priming liquid drip chamber to form an air layer, and the air is forced to flow when the air in the air layer reaches a predetermined volume. a second step of stopping, after the second step, the order of the priming liquid line The priming liquid is forced flow countercurrently, and having a third step of accommodating the air upstream of the air layer than drip chamber for the priming solution to the priming solution for drip chamber.

According to a second aspect of the present invention, in the liquid level adjustment method for the drip chamber for a priming liquid according to the first aspect, the blood purification device may be an arterial drip chamber connected to the arterial blood circuit or the venous blood circuit. The arterial drip chamber, comprising: a venous drip chamber; an open line extending from the air layer side of the arterial drip chamber or the venous drip chamber; and a squeezing pump disposed in the middle of the open line. Or an air pump that can introduce or discharge air through the open line to the venous drip chamber and adjust the liquid level of the arterial drip chamber or the venous drip chamber, and rotate the air pump forward or by reversing the priming liquid of the priming liquid line forward or Gyakukata Wherein the force flow in.

According to a third aspect of the invention, the liquid level adjusting method according to claim 1 or priming solution for a drip chamber according to claim 2, capable of detecting an upstream side of the air than the priming solution for drip chamber in the priming liquid line An air detection sensor is provided, and the air detection sensor detects a predetermined volume of the air layer in the second step.

According to a fourth aspect of the present invention, in the liquid level adjusting method for the priming liquid drip chamber according to the first or second aspect, the second step includes priming liquid in the priming liquid line in a reverse direction for a predetermined time. By forcibly flowing, the air layer in the drip chamber for the priming liquid has a predetermined volume.

According to the first aspect of the present invention, the air layer having a predetermined volume in the second step is accommodated in the drip chamber for the priming liquid in the third step, and the liquid level is set at a desired position. by sequentially going through the first step to third step, it can be automated liquid level adjusting operation in the priming solution for a drip chamber formed in the priming liquid line.

According to the second aspect of the present invention, the priming liquid in the priming liquid line can be forced to flow in the forward direction or the reverse direction by rotating the air pump forward or backward. The three steps can be performed sequentially, and the air pump can be used to adjust the liquid level of the arterial drip chamber or the venous drip chamber during treatment. Further, the present invention can be easily applied to an existing blood purification apparatus in which an air pump is connected to an arterial drip chamber or a venous drip chamber.

According to the invention of claim 3, since the predetermined volume of the air layer in the second step is detected by the air detection sensor, the desired liquid level position can be obtained more reliably, and the air detection sensor It can be used as a sensor for running out of priming liquid .

According to the invention of claim 4, the second step, by forced flow of the priming solution of the priming liquid line in the reverse direction by a predetermined time, since the air layer of the priming solution for drip chamber to a predetermined volume, It can be easily applied to a priming liquid line that does not have an air detection sensor or the like.

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
The blood purification apparatus according to this embodiment includes a dialysis apparatus for performing dialysis treatment. As shown in FIG. 1, a blood circuit including an arterial blood circuit 1 and a venous blood circuit 2, and an arterial blood circuit 1. And a dialyzer 3 (blood purification means) interposed between the venous blood circuit 2 and purifying blood flowing in the blood circuit, a blood pump 4, an arterial drip chamber 5, 7 and a venous drip chamber 6, A priming liquid line L4 in which a priming liquid drip chamber 10 is formed and a dialyzer body 8 that can supply dialysate 3 to the dialyzer 3 are mainly configured.

The arterial blood circuit 1 has a tip 1a to which an arterial puncture needle can be connected, and an iron-type blood pump 4 and arterial drip chambers 5 and 7 for defoaming in the middle (blood pumps) The arterial drip chamber 5 is disposed between the blood pump 4 and the arterial drip chamber 5 between the priming fluid line L4 and the arterial blood circuit 1 between the blood pump 4 and the dialyzer 3. The venous blood circuit 2 has a tip 2a that can be connected to a venous puncture needle, and a venous drip chamber 6 connected to the venous blood circuit 2 in the middle.

  When the blood pump 4 is driven while the patient is punctured with the arterial puncture needle and the venous side puncture needle, the blood of the patient reaches the dialyzer 3 through the arterial blood circuit 1 and then the dialyzer 3. As a result, blood purification is performed, and bubbles are removed in the venous drip chamber 6 and returned to the patient's body through the venous blood circuit 2. That is, the patient's blood is purified by the dialyzer 3 while being circulated extracorporeally in the blood circuit. An overflow line L3 is extended from the air layer (upper) side of the venous drip chamber 6, and an electromagnetic valve V2 capable of closing the flow path of the overflow line L3 is provided in the middle. Yes.

  The dialyzer 3 is formed with a blood introduction port 3a, a blood outlet port 3b, a dialysate inlet port 3c, and a dialysate outlet port 3d in the casing. Among these, the blood inlet port 3a includes the arterial blood circuit 1. However, the venous blood circuit 2 is connected to the blood outlet port 3b. The dialysate introduction port 3c and the dialysate lead-out port 3d are connected to a dialysate introduction line L1 and a dialysate discharge line L2 extending from the dialyzer body 8, respectively.

  A plurality of hollow fibers are accommodated in the dialyzer 3, the inside of the hollow fibers is used as a blood flow path, and the flow of dialysate is between the hollow fiber outer peripheral surface and the inner peripheral surface of the housing. It is considered a road. A hollow fiber membrane is formed in the hollow fiber by forming a large number of minute holes (pores) penetrating the outer circumferential surface and the inner circumferential surface, and impurities in the blood are passed through the membrane in the dialysate. It is comprised so that it can permeate | transmit.

  On the other hand, the dialyzer body 8 is provided with a water removal pump (not shown) for removing water from the blood of the patient flowing in the dialyzer 3, and one end of the dialysate introduction line L1 is connected to the dialyzer. 3 (dialysate introduction port 3c), and the other end is connected to a dialysate supply device (not shown) for preparing a dialysate having a predetermined concentration. One end of the dialysate discharge line L2 is connected to the dialyzer 3 (dialysate outlet port 3d), and the other end is connected to a waste fluid means (not shown), so that the dialysate supplied from the dialysate supply device is After reaching the dialyzer 3 through the dialysate introduction line L1, the dialysate discharge line L2 is sent to the waste liquid means.

A priming liquid line L3 extends from between the distal end 1a of the arterial blood circuit 1 and the blood pump 4, and a bag 7 ( priming liquid accommodating means) containing a predetermined amount of priming liquid (physiological saline) at the distal end. ) Is connected. In the middle of the priming liquid line L3, and a priming solution for a drip chamber 10 and the electromagnetic valve V1 is disposed, the blocking of the channel due to the electromagnetic valves V1, the supply to the blood circuit side of physiological saline Can be stopped. The priming liquid drip chamber 10 has an accommodation space having a diameter larger than the diameter of the flow path in the priming liquid line L3, and has the same configuration as the arterial drip chambers 5 and 7 and the venous drip chamber 6. ing.

When the blood pump 4 is driven while the electromagnetic valve V1 is opened, the physiological saline solution in the bag 7 is supplied into the blood circuit via the priming solution line L4, and the physiological saline solution is supplied in the process. Since it passes through the drip chamber 10 for the priming solution , air bubbles in the physiological saline are allowed to escape to the air layer formed inside, and the flow of the physiological saline can be visually confirmed.

Further, on the upstream side of the priming liquid for the drip chamber 10 in the priming liquid line L4 (9 side bag), air detection sensor 12 capable of detecting the air flowing through the priming liquid line L4 is disposed. For example, the air detection sensor 12 transmits and receives ultrasonic waves and light through the priming liquid line L4, and detects whether liquid (physiological saline) or air is flowing through the site. Configured to get.

Here, in this embodiment, as shown in FIG. 3, the air detection sensor 12 is disposed at a position where the dimension from the bottom surface of the bag 9 (connection portion with the priming liquid line L4) is Ta. Yes. The dimension Ta is determined based on the dimension Tb (see FIG. 4) of the desired air layer to be formed in the priming liquid drip chamber 10, and the volume of air in the dimension Ta and the volume of air in Tb are the same. It is set as follows.

  On the other hand, from the side (upper part) where the air layer is formed in the arterial drip chambers 5 and 7 and the venous drip chamber 6, an open line L5 in which the tip a is opened to the atmosphere is extended. A squeezing type air pump 11 is disposed on the distal end a side of the open line L5, and air is introduced into or discharged from the arterial drip chambers 5 and 7 and the venous drip chamber 6 by forward and reverse driving. The liquid level of the drip chamber can be adjusted.

  That is, if air is introduced through the open line L5, the liquid level in each drip chamber is lowered, and if air is discharged, the liquid level is raised. Therefore, the air pump 11 can be driven so as to be at an arbitrary liquid level. For example, the liquid level of these drip chambers can be adjusted. However, electromagnetic valves V3 to V5 are disposed at appropriate positions on the open line L5. By selectively opening or closing these electromagnetic valves, any of the arterial drip chambers 5, 7, or Air can be introduced or discharged by the air pump 11 to the venous drip chamber 6.

  A pressure monitor line extending from the arterial drip chambers 5 and 7 and the venous drip chamber 6 to the pressure sensors P1 to P3 is formed. In the present embodiment, the pressure monitor line is further branched to provide an electromagnetic valve V3. A line extending to ~ a through V5 is an open line L5. That is, in the open line L5, when the liquid level is adjusted, the electromagnetic valves V3 to V5 are opened and the action of the air pump 11 is exerted on the air layer of each drip chamber, and during the subsequent treatment, the electromagnetic valves V3 to V5 are applied. Is closed, and the pressures in the air layers of the arterial drip chambers 5 and 7 and the venous drip chamber 6 are measured by the pressure sensors P1 to P3.

Next, a method for adjusting the liquid level of the priming drip chamber 10 in the dialysis apparatus will be described.
First, as shown in FIG. 1, the distal end 1a of the arterial blood circuit 1 interposing the dialyzer 3 and the distal end 2a of the venous blood circuit 2 are connected to form a circulation circuit, and then the electromagnetic valve V1 is opened. As the state, the priming liquid line L3 is opened and the air pump 11 is driven to rotate forward (first step). At this time, the electromagnetic valve V4 is opened, the electromagnetic valves V3 and V5 are closed, and the dialysate introduction line L1 and the dialysate discharge line L2 are closed by an electromagnetic valve (not shown).

Then, as shown in FIG. 2, the physiological saline in the bag 9 forcibly flows in the forward direction of the priming solution line L4 from the bag 9 toward the blood circuit (in the direction of the arrow in the figure), and the priming solution line L4. The upstream and downstream sides of the priming drip chamber 10 are filled with physiological saline. At this time, since the diameter of the priming liquid drip chamber 10 is larger than the diameter of the flow path of the priming liquid line L4, the physiological saline passes through the priming liquid drip chamber 10 but does not accumulate (even if accumulated). Since a slight amount is accumulated at the bottom), the state in which air is contained is maintained.

After the first step, the drive of the air pump 11 is reversed, and the physiological saline solution in the priming solution line L4 is forced to flow in the direction opposite to the forward direction (in the direction of the arrow in FIG. 3) as shown in FIG. Process). Accordingly, the air of the priming solution for drip chamber 10 is released to the upstream side of the said priming solution for drip chamber 10, the air layer is formed at that site. The escaped air reaches the air layer in the bag 9.

Thus, in the process in which the air is released to the bag 9 side on the upstream side of the priming liquid line L4, the boundary surface between the air layer and the physiological saline (the level of the flowing physiological saline) is used as an air detection sensor. The air pump 11 is controlled to stop when 12 is detected. Thereby, the forced flow of the physiological saline in the reverse direction is stopped, and the height dimension of the air layer in the priming liquid line L4 is adjusted to Ta. That is, after the air is contained in the priming liquid drip chamber 10 in the first step, the air is allowed to escape in the second step until the volume of the air becomes desired.

Thereafter, as shown in FIG. 4, if the physiological saline is forced to flow in the forward direction of the priming liquid line L <b> 4 by rotating the air pump 11 in the normal direction again, the air upstream from the priming liquid drip chamber 10. The layer air (air in the dimension Ta) can be accommodated in the drip chamber 10 for the priming solution (third step). Therefore, the height dimension because the air layer A of Tb is formed on the priming solution for drip chamber 10, the liquid level of the priming solution for drip chamber 10 reaches a desired position.

Since the liquid level adjustment work of the drip chamber 10 for the priming liquid is completed as described above, if the blood pump 4 is subsequently driven while maintaining the state in which the blood circuit constitutes the circulation circuit, the inside of the blood circuit is filled with physiological saline. Priming can be performed by satisfying. Thereafter, the distal end 1a of the arterial blood circuit 1 and the distal end 2a of the venous blood circuit 2 of the blood circuit filled with physiological saline are disconnected, and an arterial puncture needle and a venous puncture needle are respectively attached to the patient. In addition, the blood pump 4 is driven and blood is circulated extracorporeally in the blood circuit to purify and remove water with the dialyzer 3 to perform dialysis treatment.

According to the liquid level adjusting method of the priming liquid drip chamber 10, the air layer having a predetermined volume (height dimension Ta) in the second process is accommodated in the drip chamber 10 for the priming liquid in the third process, and the liquid since the surface is configured to a desired position, by sequentially through the first step to third step, be automated liquid level adjusting operation in the priming liquid for the drip chamber 10 formed in the priming liquid line L4 be able to.

Further, since the physiological saline in the priming liquid line L4 can be forced to flow in the forward direction or the reverse direction by rotating the air pump 11 forward or backward, the first to third steps are performed by driving the air pump 11. The air pump 11 can perform the liquid level adjustment of the arterial drip chambers 5 and 7 or the venous drip chamber 6 at the time of treatment. Further, the present invention can be easily applied to an existing dialysis apparatus in which the air pump 11 is connected to the arterial drip chambers 5 and 7 or the venous drip chamber 6.

Further, since the air detection sensor 12 detects the predetermined volume (height dimension Ta) of the air layer in the second step, the air layer A can be more reliably set to a desired liquid level position, and the air The sensor 12 for detection can be used as a sensor for running out of physiological saline. Instead of detecting the air layer by the air detection sensor 12, for example, the driving time of the air pump 11 in the second step may be set to a predetermined value. In this case, in the second step, if the time until the height dimension of the air layer reaches the desired height is measured in advance and the air pump 11 is driven (reversed) for that time, the first step is the same as in the above embodiment. The liquid level in the priming liquid drip chamber 10 can be automatically adjusted in three steps. In this way, in the second step, if the physiological layer in the priming liquid line L4 is forced to flow in the reverse direction for a predetermined time to make the air layer in the priming liquid drip chamber 10 have a predetermined volume, the priming liquid The present invention can be easily applied to a case where the air line L4 has no air detection sensor or the like.

Although the present embodiment has been described above, the present invention is not limited to this. For example, while the electromagnetic valves V4 and V3 in the open line L5 are closed, the electromagnetic valve V5 is opened and the air pump 11 is driven ( You may comprise so that the said 1st process thru | or 3rd process may be performed by making it rotate forward or reverse). In this case, although the connection position of the arterial drip chamber 7 needs to be set so that the physiological saline that is forced to flow forward in the first step has a sufficient amount, as in the above embodiment. The liquid level in the priming liquid drip chamber 10 can be automatically adjusted.

Further, if the blood pump 4 can be rotated forward and backward, the blood pump 4 can perform the first to third steps. Specifically, the blood pump 4 is rotated forward to forcibly flow the physiological saline in the bag 9 in the forward direction in the priming liquid line L4 (first step), and then the blood pump 4 is reversed and the priming liquid The physiological saline in the service line L4 is forced to flow in the reverse direction, and the forced flow is stopped when the air layer reaches an arbitrary height (dimension Ta) (second step). Then, by forward blood pump 4 once again, if housed an air layer in the dimension Ta to priming solution for drip chamber 10, similarly to the above embodiment, the liquid level of the priming solution for drip chamber 10 It can be adjusted automatically.

The arterial blood circuit can be applied to one in which only one drip chamber is formed, or the arterial blood circuit in which no drip chamber is formed. In that case, the action of the air pump is exerted on the priming liquid line side through the vein drip chamber. In this embodiment, the present invention is applied to a dialysis apparatus used at the time of dialysis treatment, but is used in other apparatuses that can purify the patient's blood while circulating it outside the body (for example, blood filtration dialysis, blood filtration, AFBF). The present invention may be applied to blood purification devices, plasma adsorption devices, and the like.

An upstream side and a downstream side of the priming liquid for the drip chamber in the priming liquid line fulfills a physiological saline solution, a first step of inherent air into the priming solution for drip chamber, the priming fluid for drip chamber the second step and the priming solution for a drip the priming solution for drip chamber air upstream of the air layer than the chamber to form an air layer of a predetermined volume of air to escape on the upstream side of the drip chamber for the priming solution As long as it is a liquid level adjustment method for a drip chamber for a priming liquid that has a third step to be contained in the liquid , it can be applied to other forms and applications.

Overall schematic diagram showing a dialysis device (blood purification device) applied to an embodiment of the present invention It is a fragmentary figure which shows the range where the effect | action of the air pump in the same dialysis apparatus is exerted, Comprising: Explanatory drawing for demonstrating a 1st process It is a fragmentary figure which shows the range where the effect | action of the air pump in the same dialysis apparatus is extended, Comprising: Explanatory drawing for demonstrating a 2nd process It is a fragmentary figure which shows the range where the effect | action of the air pump in the same dialysis apparatus is extended, Comprising: Explanatory drawing for demonstrating a 3rd process Schematic diagram showing a conventional dialysis machine

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Arterial blood circuit 2 Vein side blood circuit 1a, 2a Tip 3 Dialyzer (blood purification means)
4 Blood Pump 5, 7 Arterial Drip Chamber 6 Venous Drip Chamber 8 Dialyzer Main Body 9 Bag ( Priming Solution Accommodating Means)
10 drip chamber for priming liquid 11 air pump 12 sensor for air detection L1 dialysate introduction line L2 dialysate discharge line L3 overflow line L4 priming liquid line L5 open line

Claims (4)

It consists of an arterial blood circuit with an arterial puncture needle attached to the tip and a venous blood circuit with a venous puncture needle attached to the tip, and can circulate the patient's blood extracorporeally from the arterial puncture needle to the venous puncture needle Blood circuit,
A blood purification means for purifying blood flowing between the arterial blood circuit and the venous blood circuit of the blood circuit and flowing through the blood circuit;
The extended from the blood circuit, and the priming liquid line capable of supplying the priming solution into the priming liquid storage and priming liquid storage means is connected the blood circuit of a predetermined volume at the distal end,
A priming liquid drip chamber formed in the middle of the priming liquid line;
In the method for adjusting the liquid level of the drip chamber for priming liquid in the blood purification apparatus comprising:
Said the priming solution containing means in the forward direction of the priming liquid line toward the blood circuit priming liquid in the priming liquid storage means is forced flow, upstream of the priming liquid for the drip chamber in the priming liquid line A first step of filling the priming liquid with the priming liquid and allowing air to be contained in the priming liquid drip chamber;
After the first step, and the forward priming liquid of the priming liquid line forced flow in the reverse direction, the air in the priming liquid for the drip chamber to escape to the upstream side of the drip chamber for the priming solution A second step of forming an air layer and stopping forced flow when the air in the air layer reaches a predetermined volume;
After the second step, the priming liquid is forced flow in the forward direction of the priming liquid line, a third housing the air upstream of the air layer than drip chamber for the priming solution to the priming solution for drip chamber Process,
A liquid level adjustment method for a drip chamber for priming liquid , comprising: The blood purification device comprises:
An arterial drip chamber or venous drip chamber connected to the arterial blood circuit or venous blood circuit;
An open line extending from the air layer side of the arterial drip chamber or venous drip chamber;
It comprises a squeezing type pump disposed in the middle of the open line, and introduces or discharges air through the open line to the arterial drip chamber or venous drip chamber, and these arterial drip chamber or venous drip An air pump capable of adjusting the liquid level in the chamber;
2. The priming drip chamber according to claim 1, wherein the priming liquid in the priming liquid line is forcibly flowed in a forward direction or a reverse direction by rotating the air pump forward or reverse. Liquid level adjustment method. With arranging a sensor for air detection capable of detecting an upstream side of the air than the priming solution for drip chamber in the priming liquid line, detects a predetermined volume of the air layer in the second step by the air detection sensor The liquid level adjusting method for a drip chamber for a priming liquid according to claim 1 or 2, characterized in that: The second step, by forced flow of the priming liquid of the priming liquid line in the reverse direction by a predetermined time, according to claim 1, characterized in that the air layer of the priming liquid for the drip chamber to a predetermined volume Or the liquid level adjustment method of the drip chamber for priming liquids of Claim 2.

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