JP2002119591A - Flow controller and infusion and blood transfusion set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily adjust a flow rate by a flow controller and to reduce time change in flow rate or to prevent the change. SOLUTION: The flow controller 200 is provided with a channel 1, a first cylindrical closing part 2 arranged inside the channel 1 and a second closing part 3 arranged in a shape to wind around the downstream side of the first closing part 2. One groove part 10 is disposed on the outer peripheral wall of the second closing part 3. The second closing part 3 is pressurized via the channel 1 in accordance with the sliding operation of an adjustment operation member 4 so as to adjust the opening/closing amount of the groove part 10. Consequently, the flow rate is obtained in accordance with the opening/closing amount of the groove part 10. A slit 5 is also arranged in the end part of the upstream side of the first closing part 2 and this part is picked between fingers for increasing the flow rate. Thus, the slit 5 is opened and a large amount of chemical liquid, etc., is made to flow in the first closing part 2. The slit 5 is closed after taking fingers off so that the flow rate corresponding to the opening/closing amount of the groove part 10 is immediately obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flow controller and a transfusion / blood transfusion set used to regulate the flow of a liquid (fluid) such as a drug solution or blood.

[0002]

2. Description of the Related Art In a transfusion set, a blood transfusion set and other medical instruments, it is necessary to control the flow rate of a liquid such as a drug solution or blood flowing in a tube. It is well known that a flow regulator is mounted in the middle of these tubes for that purpose.

[0003] A typical example of this flow controller is:
For example, there is a roller type clamp (roller clamp) as disclosed in Japanese Patent Publication No. 58-22224.
This roller clean is composed of a main body and a roller movably mounted on the main body.The tube is sandwiched between the outer peripheral surface of the roller and the bottom of the main body with a moderate inclination, and by moving the roller The flow rate of the liquid is adjusted by changing the degree of pinching the tube.

However, according to this roller clamp, the narrow portion of the flexible tube is strongly pressed against a small cross-sectional area, so that the cross-sectional shape of the narrow portion changes with time, thereby reducing the opening area of the tube and reducing the flow rate. Is gradually reduced.

[0005] In addition, in this roller clean, a technique for moving the above-mentioned roller delicately is required, so that adjusting the flow rate is troublesome and requires skill. Recently, the number of scenes in which the patient or his / her family performs this procedure has been increasing, and a flow controller which can be easily adjusted even by a beginner is required.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a flow controller and an infusion / blood transfusion which can easily adjust the flow rate and can reduce the flow rate change with time or prevent the flow rate change. To provide a set.

[0007]

This and other objects are achieved by the present invention which is defined below as (1) to (11).

(1) A flow controller for controlling the flow rate of a fluid, comprising: a flexible tube through which a fluid flows; and a support member provided in contact with an inner surface of a lumen of the tube.
2 defined by the support in the lumen of the tube
And a notch provided in a portion of the support that contacts the inner surface of the tube and / or a portion of the inner surface of the tube that contacts the support and communicates the spaces. The flow controller is characterized in that the part is configured to open and close by a change in the shape of the tube and / or the support.

(2) The flow controller according to the above (1), wherein one cut-out portion is provided.

(3) The flow rate adjusting device according to (1) or (2), wherein the opening and closing amount of the cut portion is adjusted by applying pressure to the tube and / or the support. vessel.

(4) Any of (1) to (3) above, further comprising an opening / closing amount adjusting means for adjusting the opening / closing amount of the cut portion by applying pressure to the tube and / or the support. The flow controller as described.

(5) The opening / closing amount adjusting means is provided so as to be slidable along the axial direction of the tube, and applies a pressure corresponding to the sliding operation to the tube and / or the support so that the tube can be slid. The flow controller according to the above (4), which is configured to adjust an opening / closing amount of the cut portion.

(6) The opening / closing amount adjusting means changes a position where a force acts on the tube and / or the support in a circumferential direction of the tube in accordance with a sliding operation of the opening / closing amount adjusting means. The flow controller according to the above (5), wherein the flow controller is configured to perform:

(7) The opening / closing amount adjusting means is rotatably provided along a circumferential direction of the tube, and applies a pressure corresponding to the rotation operation to the tube and / or the support to thereby adjust the opening / closing amount. The flow controller according to the above (4), which is configured to adjust an opening / closing amount of the cut portion.

(8) The opening / closing amount adjusting means has a cylindrical shape, and at least a part of an inner peripheral surface thereof applies a pressure corresponding to the rotating operation to the tube and / or the support. The flow controller according to the above (7), wherein

(9) The internal shape of the opening / closing amount adjusting means in a cross section is such that the pressure applied to the tube and / or the support gradually increases or decreases within a range where the central angle exceeds 90 °. The flow controller according to the above (8), wherein

(10) The opening / closing amount adjusting means is configured to apply pressure to the tube and / or the support at three or more points when viewed in a cross section of the tube. The flow controller according to any of 9).

(11) An infusion / blood transfusion set comprising the flow controller according to any one of (1) to (10).

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a flow rate controller and an infusion / blood transfusion set according to the present invention will be described in detail based on preferred embodiments shown in the accompanying drawings.

[First Embodiment] (Structure of First Embodiment) FIG. 1 is a side view (partially vertical sectional view) showing a flow rate controller according to a first embodiment of the present invention. It is.

In FIG. 1, the upper side is the upstream side, and the lower side is the downstream side. On the upstream side, for example, a drug solution bag (transfusion bag) filled with a drug solution (liquid) for infusion or a blood transfusion bag for blood transfusion. A blood bag in which blood is sealed is connected via a conduit 1 and a tube, and a downstream side, for example, an injection needle for puncturing a blood vessel of a patient is connected via the conduit 1 and a tube. I want to be understood. That is, a case is shown in which the flow regulator is incorporated in a transfusion / blood transfusion set (not shown) for performing transfusion or blood transfusion.

The flow controller 200 adjusts the flow rate of a liquid (fluid) such as a drug solution or blood to be infused or transfused into the patient from the drug solution bag or blood bag. A first tube (soft tube) 1, a first closed portion (communication passage) 2 having a substantially cylindrical shape (but the upstream end is closed) provided in a form to be inserted into the conduit 1, The first closure 2 is inserted into the line 1 and this first
A second closing portion (support) 3 provided in a shape surrounding the lower portion of the closing portion 2 (substantially cylindrical), and a groove (cut portion) 10 (notch portion) provided in the second closing portion 3 Opening / closing amount (area (cross-sectional area) in cross section of groove 10) of FIG. 2)
And an adjusting operation member (opening / closing amount adjusting means) 4 for controlling (adjusting) the flow rate of the liquid.

In FIG. 1, the first closing portion 2 and the second closing portion 3 are each constituted by one component (member), but the number of these components is not particularly limited.

Further, the first closing part 2 and the second closing part 3 may be constituted by one part (member).
The first closing part 2 and the second closing part 3 may be integrated.

The conduit 1 is preferably relatively soft and elastically deformable. In the case of being hard, the thickness may be reduced.

Examples of the constituent material of the conduit 1 include various rubbers such as silicone rubber, natural rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber, butyl rubber, and fluoro rubber, polyolefin, polyurethane,
Various resins such as a vinyl chloride resin, a fluororesin, and an acrylonitrile-butadiene-styrene copolymer (ABS resin) are exemplified. In addition, the conduit 1 is preferably transparent (having light transmittance) so that air bubbles and the like in the flow path can be visually recognized (confirmed) from the outside.

The outer diameter of the first closing part 2 is smaller than the inner diameter of the conduit 1. For this reason, as shown by a solid arrow in FIG.
Flow through a gap formed between the outer peripheral wall of the closing portion 2 and the outer peripheral wall.

At the upstream end (apex) of the first closing portion 2, a slit 5 which is normally closed is provided.

The portion where the slit 5 of the first closing portion 2 is provided is a valve portion, and the valve portion has a dome shape convex on the upstream side. That is, the upstream end face of the valve section is curved so that the upstream side is convex. This valve portion constitutes an opening / closing means for opening / closing the flow path of the first closing portion 2 without being involved in opening / closing of the groove portion 10 described later.

The constituent material of the first closing part 2 is as follows.
For example, various resins such as polypropylene, polyethylene, vinyl chloride resin, fluororesin, acrylonitrile-butadiene-styrene copolymer (ABS resin), silicone rubber, natural rubber, isoprene rubber, butadiene rubber,
Various rubbers such as styrene-butadiene rubber, butyl rubber, and fluoro rubber are exemplified. Further, a portion (valve portion) of the first closing portion 2 near the slit 5 is preferably made of an elastic body. Further, the first closing portion 2 is preferably transparent (having light transmittance) so that air bubbles and the like in the flow path can be visually recognized (confirmed) from the outside.

As will be described later, when the portion (valve portion) of the first closing portion 2 where the slit 5 is provided is sandwiched by fingers together with the pipe line 1 and pressed, the slit which is normally closed is provided. 5 is opened by this external pressure (pressing force) (two spaces defined by a second closing portion 3 described later communicate with each other), and as shown by a dotted arrow in FIG. The liquid medicine or the like flows through the first closed portion 2 through the slit 5.

In the flow controller 200, the adjusting member 4 is operated to operate the groove 10 provided in the second closing portion 3.
The flow rate of the drug solution or blood is adjusted by controlling the opening / closing amount of the liquid. When it is desired to temporarily increase the flow rate of the drug solution or the like, the user can grasp the slit 5 of the first closing portion 2 with a finger. With the slit 5 in the open state, the flow rate of the chemical solution or the like can be easily increased.

FIG. 2 is a perspective view showing the second closing portion 3 mounted on the first closing portion 2, and FIG.
FIG. 4 is a cross-sectional view of the closing part 2 and the second closing part 3 of FIG.

As can be seen from FIGS. 2 and 3, the second closing portion 3 is provided so as to be wound around the lower portion of the first closing portion 2 (downstream from the slit 5). 2
In the outer wall portion of the closing portion 3, a groove portion (cut portion) having a substantially V-shaped cross section, which is opened and closed by a change in the shape of the second closing portion 3
10 are provided. The groove 10 extends from the upstream end to the downstream end of the second closing portion 3 along the direction of the flow path of the conduit 1 (axial direction).

The second closing portion 3 having the groove 10 is
It is preferable to have appropriate hardness for forming (holding) the flow path stably and appropriate flexibility for elastic deformation. Examples of the constituent material of the second closing portion 3 include various resins such as polyolefin, polyurethane, vinyl chloride resin, fluororesin, acrylonitrile-butadiene-styrene copolymer (ABS resin), various rubbers and various thermoplastic elastomers. And the like. In addition, it is preferable that the second closing portion 3 has a large elongation at the yield point, a large tear strength, and an excellent creep resistance.
In addition, the second closing portion 3 is preferably transparent (has light transmittance) so that air bubbles and the like in the flow path can be visually recognized (confirmed) from the outside.

When such a second closing portion 3 is provided in the pipeline 1 together with the first closing portion 2, the outer peripheral wall of the second closing portion 3 and the inside of the pipeline 1 are formed as shown in FIG. Since the peripheral walls come into close contact with each other, the flow path of the chemical solution or the like in the pipeline 1 is closed. However, since the second closed portion 3 is provided with the groove 10, the inside of the pipeline 1 is closed. The chemical or the like flows downstream through the groove 10. That is, two spaces defined by the second closing portion 3 are formed in the lumen of the conduit 1, and these spaces communicate with each other through the groove 10.

The flow controller 200 controls the opening / closing width of the groove 10 by an adjusting operation member 4 described below to adjust the flow rate of a chemical solution or the like.

The constituent material of the adjusting operation member 4 is preferably a hard material so that the amount of deformation of the flow path members such as the conduit 1, the first and second closing portions 2, 3 and the like can be reliably controlled. For example, polycarbonate, polyolefin, nylon, acrylonitrile-butadiene-styrene copolymer (AB
S), various polymer materials such as vinyl chloride resin and polysulfone, and various metal materials such as aluminum, titanium, duralumin, and stainless steel. The adjustment operation member 4 is hard and is hardly deformed. However, the adjustment operation member 4 is transparent (has light transmittance) so that air bubbles and the like in the flow path can be visually recognized (confirmed) from the outside. Is preferred.

FIG. 4 is a side view of a flow controller 200 provided with the adjusting operation member 4.

As can be seen from FIG. 4, the adjusting operation member 4 is provided with a winding portion 14 wound around the pipeline 1.
And an operation unit 15 formed integrally with the winding unit 14 and provided to have a predetermined length along the longitudinal direction (axial direction) of the pipeline 1.

A pair of first and second undulating portions (projections) 6 and 7 are provided in the operation portion 15 and the conduit 1.

The operator puts his / her finger on the first undulating portion 6 provided on the adjusting operation member 4 and also puts on the second undulating portion 7 provided on the pipeline 1 and in this state, One finger is moved along the longitudinal direction of the conduit 1 with respect to the other finger. Thereby, the adjusting operation member 4 slides along the longitudinal direction of the pipeline 1. Thus, the first and second
The adjusting operation member 4 can be easily slid by the undulating portions (projections) 6 and 7.

A scale 12 indicating the flow rate of a chemical solution or the like is provided on the winding portion 14 of the adjusting operation member 4 at a position where the adjusting operation member 4 is not hidden by the operator's hand when the adjusting operation member 4 is slid. . On the pipe 1 side (for example, the second closing portion 3), a pointer 13 pointing to the scale 12 is provided in response to a slide operation of the operator.

In FIG. 4, the pointer 13 is indicated by a dotted arrow, but the pointer 13 is provided on the pipe 1 side.
Shows a state visually observed through the adjustment operation member 4 formed of the transparent member described above. Therefore, it should be understood that, in practice, the pointer 13 is provided on the pipe line 1 side so as to be clearly visible by, for example, printing or engraving.

FIG. 5 is a vertical sectional perspective view of the adjusting operation member 4,
FIGS. 6A and 6B are cross-sectional views of the winding portion 14 in a state where the adjusting operation member 4 is mounted on the pipeline 1.

As can be seen from FIGS. 5 and 6 (a) and (b), the pipe 1, the first closing part 2 and the second A pair of ribs 20 and 21 for applying (pressing) pressure to the closing portion 3 are provided. Specifically, as shown in FIG. 5, one of the ribs 20 is a straight line along the longitudinal direction of the winding portion 14 (FIG. 5).
(Shown by a middle dotted line) so as to have a predetermined angle (obliquely) with respect to this rib 21.
It is provided so as to face 0.

Accordingly, when the adjusting operation member 4 is slid, the ribs 20 and 21 apply a force (push) to the conduit 1, the first closing portion 2 and the second closing portion 3 in accordance with the sliding operation. The position where the pressure acts is changed (moved) in the circumferential direction of the pipeline 1.

The ribs 20 and 21 are connected to the winding portion 1.
4 may be provided spirally with respect to the inner peripheral wall.

The heights of the ribs 20 and 21 may be the same from one end to the other end, or may be different from one end to the other end. By providing the height difference, the relationship between the operation amount of the adjustment operation member 4 and the flow rate of the chemical solution or the like can be set freely (to any relationship).

When such an adjusting operation member 4 is mounted on the conduit 1, as shown in FIGS.
At 21, the pipeline 1 is pressed. In this state, when the adjusting operation member 4 is slid, the respective ribs 20 and 21 are moved.
Changes the pressing position of the pipeline 1 by the pressure. This flow controller 20
0 changes the pressing position by the sliding operation to change the state (opening / closing amount) of the groove 10 between the fully open state shown in FIG. 6A and the fully closed state shown in FIG. 6B. It can be adjusted to any state.

(Operation (Operation) of First Embodiment) Next, the operation (operation) of the flow controller 200 having the above-described configuration according to the first embodiment will be described. In addition,
Hereinafter, a description will be given of an example in which a predetermined medical solution is infused into a patient using the infusion / blood transfusion set having the flow rate controller 200.

In the pipeline 1 on the upstream side of the flow controller 200,
For example, a drug solution bag is connected via a tube (not shown), and an injection needle is connected to the downstream pipeline 1 via, for example, a tube (not shown).
The injection needle is punctured into, for example, a blood vessel in the arm of the patient, and the drug solution bag is installed (held) at a position higher than the patient's arm. That is, the drug solution stored in the drug solution bag is flowing from the drug solution bag to the injection needle via the tube, the flow controller 200, and the tube, or is in a state where it can flow.

The pointer 13 provided on the pipe 1 side shown in FIG.
When the arrow indicates zero flow rate of the scale 12 provided on the adjustment operation member 4, each rib 2 provided on the winding portion 14 of the adjustment operation member 4 as shown in FIG.
The conduit 1, the first closing part 2 and the second closing part 3 are pressed so that the groove 10 of the second closing part 3 is completely closed by 0 and 21. For this reason, as shown in FIG. 1, a gap formed between the inner peripheral wall of the conduit 1 of the adjusting operation member 4 and the outer peripheral wall of the first closing portion 2 is transmitted from the chemical solution bag through the tube and the conduit 1. The chemical liquid flowing through the (flow path) is stopped by the second closing part 3 in which the groove 10 is fully closed, and does not flow at all downstream (minimum flow rate).

As will be described later, as long as an external pressing force is not applied to the vicinity of the slit 5 (valve portion) provided on the upstream side of the first closing portion 2 by pinching with a finger or the like, the slit 5 Is not open (closed). For this reason, for example, even if the adjustment operation member 4 is slid, the slit 5 does not enter the open state, and the chemical solution does not flow through the first closing portion 2.

Next, a finger is put on the first undulating portion 6 provided on the operating portion 15 of the adjusting operation member 4 shown in FIG. In this state, the one finger is moved with respect to the other finger along the longitudinal direction of the conduit 1 so that the pointer 13 points to the scale 12 indicating a desired flow rate. 4
Is operated to slide along the longitudinal direction of the pipeline 1.

According to the sliding operation, each of the ribs 20,
By 21, the direction (position) of applying a load (force) to the pipeline 1, the first closure 2, and the second closure 3 rotates (moves) about the axis of the pipeline 1. Therefore, the sliding operation of the adjusting operation member 4 changes the opening / closing state of the groove 10, that is, the opening / closing amount (cross-sectional area) of the groove 10.

The scale 12 indicates a flow rate of a chemical solution or the like corresponding to the opening / closing amount of the groove 10. Therefore, by sliding the adjusting operation member 4 so that the pointer 13 indicates the desired scale 12, the opening and closing amount of the groove 10 can be adjusted so that a desired flow rate of the chemical solution flows.
The positions of the ribs 20 and 21 and the opening / closing amount of the groove 10 shown in FIG. 6A indicate a state in which the groove 10 is fully opened (maximum flow rate).

Next, when the opening / closing amount of the groove 10 is adjusted in this manner, a chemical solution having a flow rate corresponding to the adjusted opening / closing amount of the groove 10 flows downstream through the groove (flow path) 10. Then, this medicinal solution is administered to the patient via the injection needle.

FIG. 7 is a cross-sectional view of the flow controller 200, in which the upstream pipe 1 is cut along a plane perpendicular to its axis, and the first closing portion 2 is cut through the cut plane. The state which looked into the upstream end part in which the slit 5 was provided is shown.

As can be seen from FIG. 7, the upstream end (valve portion) of the first closing portion 2 is viewed from the axial direction of the pipeline 1 (when viewed in a cross section of the pipeline 1). ), And is in contact with the inner peripheral wall of the pipeline 1 at two points. That is, when viewed from the axial direction of the pipeline 1, the outer shape of the upstream end of the first closing portion 2 is that the pressing force from the inner peripheral wall of the pipeline 1 (the pressure of the pipeline 1) is that end. It has a substantially elliptical shape that is large enough to be added to.

The direction of the slit 5 is set such that the pressing force from the inner peripheral wall of the pipe 1 acts in the direction in which the slit 5 closes. That is, when viewed from the axial direction of the pipeline 1, the slit 5 is located substantially on the minor axis (minor axis) of the ellipse.

Here, after the flow rate adjustment as described above, a large amount (rapidly) of a chemical solution may be temporarily (flushed), for example, in repriming at the time of replacing the chemical solution. In this case, the operator sandwiches the end (valve portion) on the upstream side where the slit 5 of the first closing portion 2 is provided from the outside of the pipe line 1 with a finger, and moves the end portion as shown in FIG. A force (pressing force) is applied in substantially the same direction as the direction of the slit 5 as indicated by the dotted arrow.

Until this force is applied, a pressing force in a direction substantially perpendicular to the direction of the slit 5 is applied to the upstream end of the first closing portion 2 from the inner peripheral wall of the pipeline 1. 8A, the slit 5 is in a closed state as shown in FIG. 8A. However, the slit 5 is provided at the upstream end of the first closing portion 2 in a direction substantially the same as the direction of the slit 5. When a force is applied, the slit 5 is opened as shown in FIG. The degree of opening of the slit 5 can be adjusted, for example, by increasing or decreasing the force of pressing with a finger.

As a result, as shown by a solid line arrow in FIG. 1, the chemical solution flows downstream through the groove 10 of the second closing portion 3, and the first closing portion 2 is opened from the slit 5 opened. The chemical solution flows into the inside, and a large amount of the chemical solution flows downstream (flash) through the flow path of the first closing portion 2 as shown by the dotted arrow in FIG. That is, by opening the slit 5, the liquid medicine can be rapidly flowed during that time.

After the chemical solution has been temporarily and rapidly flowed, the finger is elastically deformed by releasing the finger from the pipe 1 (or by removing the force of the finger sandwiching the pipe 1). As described with reference to FIGS. 7 and 8A, since the pipeline 1 and the first closing portion 2 that have been closed return to the original shape, the pressing force from the inner peripheral wall of the pipeline 1 and the first The slit 5 is closed by the self-restoring force of the closing portion 2, and the first closing portion 2
There is no chemical liquid flowing into the inside, and thereafter, the chemical liquid whose flow rate has been adjusted as described above flows downstream via the groove 10 of the second closing portion 3.

(Effects of the First Embodiment) As is clear from the above description, the flow controller 200 of the first embodiment slides the adjusting operation member 4 to move the adjusting operation member 4 to a predetermined position. By doing so, each of the ribs 20 and 21 provided on the adjustment operation unit 4 presses the pipeline 1, the first closing unit 2 and the second closing unit 3, and the groove provided on the second closing unit 3. 10
The opening and closing amount is regulated, and the flow rate is set.

For this reason, the pipeline 1 to the second closing portion 3 include:
Only a pressure acting to open and close the groove 10 acts, and the amount of distortion of the pipeline 1 to the second closing portion 3 due to flow rate adjustment can be reduced, thereby preventing the opening and closing amount of the groove 10 from changing over time. It is possible to always administer a drug solution or the like (infusion, blood transfusion) at a stable flow rate.

Further, even a beginner can easily, quickly and surely adjust the flow rate, and thereby can easily, quickly and surely administer a drug solution or the like.

The flow controller 200 has a slit 5 in the first closing portion 2 and a groove 10 in the second closing portion 3.
And can be manufactured simply by inserting them into the pipeline 1, so that they can be manufactured inexpensively and easily.

A scale 12 and a pointer 13 are provided so that a flow rate corresponding to the scale 12 indicated by the pointer 13 can be obtained. For this reason, by using this scale 12 as a guideline for the administration of a medical solution or the like, even a beginner can easily administer the amount of the medical solution specified by a doctor or a nurse. Recently, the patient and his / her family and the like often perform a technique such as administration of a drug solution. However, the flow controller 200 can easily adjust the flow rate even for a beginner as described above. The patient and his / her family can safely perform a procedure such as administration of a drug solution, and can save time for a doctor and a nurse.

When it is necessary to temporarily and quickly flow a chemical solution or the like after the flow rate is adjusted, a distal end portion (slit 5) is provided on the upstream side of the first closing portion 2 from the outside of the pipeline 1. The portion 5) is sandwiched between fingers to apply an appropriate pressure to open the slit 5, so that a large amount of a chemical solution or the like can flow downstream through the slit 5 and the inside of the first closing portion 2. That is, when necessary, a chemical solution or the like can be rapidly flowed by a simple operation.

After the chemical solution or the like is temporarily and rapidly poured, the slit 5 is closed only by releasing the finger sandwiching the upstream end of the first closing portion 2. Can be instantaneously, easily and reliably returned to the original flow rate. Therefore, it is possible to save the trouble of readjusting the flow rate to the original flow rate after temporarily flowing the chemical solution or the like temporarily.

Further, a second operation, which is performed during normal flow rate adjustment, is performed.
Since the closing portion 3 of the first closing portion 2 and the upstream end (valve portion) of the first closing portion 2 for performing the operation of increasing the flow rate are separated from each other, the slit 5 of the first closing portion 2 By opening and closing, it is possible to prevent the inconvenience that the flow rate adjusted by the second closing portion 3 changes. In addition, it is possible to prevent a disadvantage that the slit 5 is erroneously opened when the flow rate is adjusted by the adjusting operation member 4.

The first closing portion 2 has a substantially cylindrical shape, and the slit 5 is normally in a closed state, so that the first closing portion 2 has flowed through the groove 10 of the second closing portion 3 during flow rate adjustment. Fine bubbles can be trapped (collected) inside the first closed portion 2. Note that the air bubbles accumulated in the first closing portion 2 can be removed by opening and closing the first closing portion 2 as necessary.

As described with reference to FIG. 7, the slit 5 can be normally closed in a normal state, thereby preventing the inconvenience that a chemical solution or the like flows downstream through the slit 5. Can be. For this reason, at normal times,
A stable flow rate as adjusted by operating the adjusting operation member 4 can be obtained.

The upstream end of the first closing portion 2 is
An outer diameter smaller than the inner diameter of the pipe 1
May be provided so as not to be in contact with the inner peripheral wall of the pipe 1, or a part thereof may be provided so as to be in contact with the inner peripheral wall of the pipeline 1.

In the description of the first embodiment,
Although the groove 10 is provided in the second closing portion 3, the groove 25 may be provided on the pipe 1 side, that is, on the inner wall of the pipe 1, as shown in FIG. 9. Even in this case, the slide operation of the adjustment operation member 4 as described above allows
The opening / closing amount of the groove 25 can be adjusted (variably controlled), and the same effect as that of the first embodiment can be obtained.

The conduit 1 having the groove 25 preferably has an appropriate hardness for forming (holding) the flow path stably and an appropriate flexibility for elastic deformation. As a constituent material of the conduit 1, for example, polyolefin, polyurethane, vinyl chloride resin, fluororesin,
Acrylonitrile-butadiene-styrene copolymer (A
BS resin) and the like. In addition, pipeline 1
Preferably have high yield point elongation, high tear strength and excellent creep resistance. In addition, the conduit 1 is preferably transparent (having light transmittance) so that air bubbles and the like in the flow path can be visually recognized (confirmed) from the outside.

Further, it is preferable that the second closing portion 3 having no groove is relatively soft and can be elastically deformed. Examples of the constituent material of the second closing portion 3 include various rubbers such as silicone rubber, natural rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber, butyl rubber, and fluoro rubber, polyolefin, polyurethane,
Various resins such as a vinyl chloride resin, a fluororesin, and an acrylonitrile-butadiene-styrene copolymer (ABS resin) are exemplified. In addition, the second closing portion 3 is preferably transparent (has light transmittance) so that air bubbles and the like in the flow path can be visually recognized (confirmed) from the outside.

In the description of the first embodiment,
Although one slit 5 is provided at the upstream end of the first closing portion 2, this is shown in FIG.
As shown in (b), two slits 26 may be provided, or three or more slits 26 may be provided. That is, a plurality of slits 26 may be provided. FIG. 10A is a side view of the upstream end of the first closing portion 2, and FIG.
FIG. 4 is a plan view of an upstream end of the closing portion 2 of FIG. Thus, when the upstream end of the first closing portion 2 is picked up with a finger through the pipe 1, a larger flow rate can be obtained through the plurality of slits.

In the description of the first embodiment,
Although one groove 10 is provided, a plurality of grooves may be provided. However, if a plurality of grooves are provided, the flow path is not limited, so that air bubbles (air) block a part of the flow path, and the air block may easily change the flow rate (flow rate). For this reason, it is preferable to provide one groove 10 as in the first embodiment because it is possible to make it difficult for the air block to change the flow velocity.

The pattern of the groove 10 and the groove 25 is as follows.
It is not limited to the linear shape shown, for example, a folded line shape, a curved shape,
A wave shape (sinusoidal shape) and the like can be mentioned.

Further, for example, the width of the groove 10 or the groove 25 may be increased so that the groove 10 or the groove 25 is not completely closed.

Further, for example, by partially increasing the width of the groove 10 or the groove 25, a part of the groove 10 or the groove 25 may not be completely closed.

It is preferable that at least a part of the groove 10 or the groove 25 is configured to be completely closed.

The sectional shapes of the groove 10 and the groove 25 are as follows.
Although the shape is substantially V-shaped, the shape is not limited to this, and may be other shapes such as, for example, substantially U-shape or U-shape.

As described above, by changing the shape of the groove portion 10 and the groove portion 25 and the dimension of the adjusting operation member 4, the pipeline 1, the first closing portion 2, and the second closing portion 3 during flow rate adjustment are designed. It is possible to freely set various flow control regions (flow control ranges) while minimizing the distortion, and it is also possible to make settings that do not require delicate control operations. Also,
Since the flow rate adjustment range can be changed simply by changing the length or depth of the groove 10 or the groove 25, it is possible to immediately respond to various flow rate requirements.

The relationship between the opening and closing amounts of the grooves 10 and 25 and the operation amount of the adjusting operation member 4 when adjusting the flow rate may be linear (linear) or non-linear (non-linear). You may. For example, the relationship between the opening / closing amounts of the grooves 10 and 25 and the amount of operation of the adjusting operation member 4 at the time of adjusting the flow rate is a non-linear relationship. On the high flow rate side, the flow rate may be finely adjusted. On the contrary, on the high flow rate side, the flow rate can only be changed largely (coarsely), but on the low flow rate side, the flow rate can be finely adjusted. Can be set.

When the adjusting operation member 4 is slid to apply a load to the conduit 1, the first closing portion 2 and the second closing portion 3 to deform them, the second closing portion 3 The vicinity of the groove 10 tends to be bent at an acute angle as compared with a portion where the groove 10 is not provided. For this reason, the second closing part 3
It is preferable to form the conduit 1, the first closing part 2, and the second closing part 3 by a combination of the constituent materials such that the vicinity of the groove 10 does not bend at an acute angle and the combination thereof. In addition, it is preferable that the thickness in the vicinity of the groove portion 10 of the second closing portion 3 is made thick and the opposite side is thin. Thereby, when the adjustment operation member 4 is slid to apply a load to the pipeline 1, the first closing portion 2 and the second closing portion 3 to deform them, the outer periphery of the second closing portion 3 is formed. The formation of a gap other than the groove 10 between the wall and the inner peripheral wall of the conduit 1 can be more reliably prevented.

[Second Embodiment] Next, a flow controller according to a second embodiment of the present invention will be described. The flow controller 200 according to the first embodiment described above includes the first closing portion 2
Is provided with one or a plurality of slits 5 at the apex of the upstream end, but the flow controller 200 according to the second embodiment is At the end, a plurality of holes are provided on the side surface slightly downstream from the apex. It should be noted that the second embodiment is different from the first embodiment only in this point. Therefore, only the difference will be described below, and redundant description will be omitted.

(Configuration of the Second Embodiment) FIG. 11 (a)
FIG. 11 is a side view of a distal end portion of a first closing portion 2 provided in the flow rate controller according to the second embodiment.
11B and 11C are cross-sectional views (transverse cross-sectional views) taken along line AB in FIG. 11A.

As can be seen from FIGS. 11 (a) and 11 (b), the flow controller 200 of the second embodiment has a side surface slightly downstream from the apex of the first closing portion 2; A pair of opposing holes 31 and 32 are provided.

The upstream end of the first closing part 2 is shown in FIG.
As shown in (b), when viewed from the axial direction, it has a substantially elliptical shape, and in the normal state, the vicinity of each of the holes 31 and 32 on the outer peripheral wall of the first closing portion 2 is The holes 31 and 32 are pressed against the inner peripheral wall so as to be closed by the inner peripheral wall of the pipeline 1.

(Operation of the Second Embodiment) In the flow controller 200 of the second embodiment having such a first closing portion 2, the flow rate is increased (flushed).
At this time, the finger is slightly picked up from the vertex of the first closing portion 2 via the pipe line 1 with a finger, and as shown by a dotted line in FIG. 11C, a line connecting the holes 31 and 32 is drawn. Apply a force in the orthogonal direction.

As a result, a gap is formed between the vicinity of each of the holes 31 and 32 on the outer peripheral wall of the first closing portion 2 and the inner peripheral wall of the pipeline 1 which have been in contact therewith. Each hole 3
A chemical solution or the like flows into the first closing portion 2 via the first and second 32, and a large amount of the chemical solution or the like flows downstream.

Further, after a large amount of the drug solution or the like is temporarily flowed to the downstream side, the finger holding the first closing portion 2 is released through the pipe 1 so that the pipe 1 and the first FIG. 11 shows the closing part 2
Each hole 31, 3 of the outer peripheral wall of the first closing part 2 shown in FIG.
The vicinity of 2 returns to the state of being pressed against the inner peripheral wall of the pipeline 1,
The holes 31 and 32 are closed, and the flow rate of the chemical solution or the like returns to the original flow rate adjusted by the adjustment operation member 4.

(Effects of the Second Embodiment) As is clear from the above description, the flow controller 200 of the second embodiment is provided at the upstream end of the first closing portion 2. A large amount of a chemical solution or the like is caused to flow downstream through the holes 31 and 32 provided. That is, in addition to being able to increase the flow rate, the flow controller 2 according to the above-described first embodiment can be used.
The same effect as 00 can be obtained. The number of the holes may be one, but a plurality is preferable.

[Third Embodiment] Next, a third embodiment of the flow controller according to the present invention will be described. The flow controller 200 according to the first embodiment described above includes the first closing portion 2
Is substantially cylindrical, but the flow controller 200 according to the third embodiment has a means for preventing the first closing portion 2 from being pinched too much. Note that, in the third embodiment and the above-described first embodiment,
Since only this point is different, only the difference will be described below, and redundant description will be omitted.

(Configuration of Third Embodiment) FIG. 12 (a)
FIG. 9 is a cross-sectional view of a portion of the first closing portion 2 provided with the slit 5 provided in the flow controller according to the third embodiment.

As can be seen from FIG.
A pair of opposing ribs (ridges) 35, 36 are provided on the inner wall portion of the portion of the closing portion 2 which is pinched by a finger, that is, the inner wall portion of the valve portion of the first closing portion 2.

(Operation of Third Embodiment) In such a flow controller of the third embodiment, when increasing the flow rate,
As shown by a dotted arrow in FIG. 12A, the valve portion of the first closing portion 2 is grasped with, for example, an index finger and a thumb and pressed with an appropriate force. As a result, the opposing surfaces of the ribs 35 and 36 come into contact with this pressing force. Therefore, even if the first closing portion 2 is further pressed by each finger, the first closing portion 2 is not crushed, and the flow paths 37 and 38 are secured. In addition, a chemical solution or the like can be caused to flow downstream via the second flow paths 37 and 38. Note that a plurality of pairs of the ribs may be provided.

(Modification) FIG. 13A is a cross-sectional view of a portion of the first closing portion 2 where the slit 5 is provided in this modification.

As can be seen from FIG. 13A, a substantially straight rod 39 is substantially coaxial with the first closing portion 2 inside the valve portion of the first closing portion 2 of this modification. It is provided as follows. The cross section of the rod 39 is substantially circular, and its diameter (outer diameter) is smaller than the inner diameter of the first closure 2. That is, the outer peripheral surface of the rod 39 is
Is not in contact with the inner peripheral wall of the closing part 2.

In the first closing portion 2 of such a modified example,
When the valve portion of the first closing portion 2 is gripped with, for example, an index finger and a thumb and pressed by an appropriate force, the deformed first closing portion 2 comes into contact with the rod 39 as shown in FIG. For this reason, even if the first closing part 2 is further pressed with each finger,
The first closing portion 2 is not crushed, and the first and second flow paths 40 and 41 can be secured, and a chemical solution or the like flows to the downstream side through the respective flow paths 40 and 41. Can be.

Further, since the rod 39 is provided so as to be substantially coaxial with the first closing portion 2, the first and second flow passages can be pressed regardless of the direction in which the first closing portion 2 is pressed. 4
Since 0 and 41 are formed, the inconvenience of closing the flow path can be prevented.

(Effect of Third Embodiment) As described above, in the flow controller 200 of the third embodiment, the rib 3
Since the rods 5 and 36 and the rod 39 are provided, the ribs 35 and 36 and the rod 39 form a support for preventing excessive picking. Accordingly, even when the first closing portion 2 is excessively pinched, a flow path is secured, and a large amount of a chemical solution or the like can be flowed downstream. In particular, in the case where the rod 39 which is substantially coaxial with the first closing portion 2 is provided, it is possible to prevent the flow path from being blocked due to excessive picking from all directions.

[Fourth Embodiment] Next, a fourth embodiment of the flow controller according to the present invention will be described. In the flow controller 200 according to the first embodiment described above, the slit 5 is provided at the apex of the upstream end of the first closing portion 2, but the flow controller according to the fourth embodiment is used. In the vessel 200, a slit is provided not in the apex portion but in a side wall portion slightly downstream from the apex portion in the upstream end portion of the first closing portion 2. Note that the fourth embodiment is different from the first embodiment described above.
Since only this point differs from the first embodiment,
Only the difference will be described, and redundant description will be omitted.

(Configuration of Fourth Embodiment) FIG. 14 (a)
FIG. 9 is a plan view of a first closing portion 2 provided in the flow rate controller according to the fourth embodiment.

As can be seen from FIG. 14A, the first closing portion 2 of the flow controller 200 according to the fourth embodiment is shown.
A slit 45 is provided in the side wall part slightly downstream from the vertex.

When viewed from the axial direction, the slit 45 is formed (arranged) so as not to pass through the dome-shaped vertex of the first closing portion 2 (the center when viewed from the axial direction).

(Operation of Fourth Embodiment) FIG. 14B
Is the first closing part 2 provided with the slit 45.
14A is a plan view showing a state in which a force is applied from a direction substantially perpendicular to a forming direction of the slit 45, which is a direction indicated by a dotted arrow in FIG.

When this force is applied, as shown in FIG. 14B, the upstream portion (upper tongue) 45a of FIG. ) An opening 46 is formed projecting downward from the middle. That is, the slit 45 is opened. For this reason, when increasing the flow rate, a chemical solution or the like can flow from the opening portion 46 to the downstream side through the inside of the first closing portion 2.

FIG. 14C shows the direction of formation of the slit 45, which is the direction indicated by the solid arrow in FIG. It is a side view which shows the state which applied force from the same direction.

When this force is applied, as shown in FIG. 14 (c), the upper tongue 45a of the slit 45 is curved (deformed) so that the upstream side is convex, and the lower tongue 45b is convex on the downstream side. Thus, the opening 46 is formed. That is, the slit 45 is opened. For this reason, when increasing the flow rate, a chemical solution or the like can flow from the opening portion 46 to the downstream side through the inside of the first closing portion 2.

(Effect of Fourth Embodiment) As described above,
In the flow controller 200 according to the fourth embodiment, the slit 45 that does not pass through the apex is provided in the first closing portion 2, so that when the flow rate is increased, the slit 45 moves in the direction in which force is applied. In addition to being easily opened, the same effect as in the first embodiment can be obtained.

[Fifth Embodiment] Next, a fifth embodiment of the flow controller according to the present invention will be described. The flow controller 200 according to the first embodiment described above includes the first closing portion 2
A single slit 5 is provided at the apex of the upstream end of the flow controller.
In the first embodiment, a plurality of slits are provided not on the vertex but on the side wall slightly downstream from the vertex in the upstream end of the first closing portion 2. Since the fifth embodiment is different from the first embodiment only in this point, only the difference will be described below, and redundant description will be omitted.

(Structure of Fifth Embodiment) FIG. 15 shows a first embodiment provided in the flow rate controller of the fifth embodiment.
FIG. 5 is a perspective view of an operation portion (a portion picked by a finger) of the closing portion 2 of FIG.

As can be seen from FIG. 15, the flow rate controller 200 of the fifth embodiment has a side wall slightly downstream from the apex of the first closing portion 2 of the first closing portion 2. Three slits 48 are provided at substantially equal intervals (substantially equal angular intervals) along the circumferential direction.

When viewed from the axial direction, each slit 48
It is formed (arranged) so as not to pass through the dome-shaped apex of the first closing portion 2 (the center when viewed from the axial direction).

(Operation of Fifth Embodiment) In the flow controller 200 of the fifth embodiment, when the first closing portion 2 is picked up through the pipe 1, the flow is added by the first closing portion 2. One or more slits 4 depending on the direction of the applied force
8 is open. Note that all the slits 48 may be in an open state depending on how to grip the first closing portion 2 and the direction of the force applied to the first closing portion 2.

(Effect of Fifth Embodiment) As described above,
In the flow controller 200 according to the fifth embodiment, since the slit 48 that does not pass through the apex is provided in the first closing portion 2, the slit 45 is easily opened when increasing the flow rate, and Since three slits 48 are provided, any one or more of the slits 48 are always provided regardless of the direction of the force applied to the first closing portion 2 when the first closing portion 2 is pinched. Is opened. This makes it possible to reliably flow a large amount of a chemical solution or the like to the downstream side, and to obtain the same effect as that of the above-described first embodiment.

Note that in the fifth embodiment,
Although three slits 48 are provided in the first closing portion 2, two or four or more slits 48 may be provided. That is, it is sufficient that a plurality of slits 48 are provided.

[Sixth Embodiment] Next, a sixth embodiment of the flow controller according to the present invention will be described. This sixth
9 is conceptually similar to the flow controller 200 of FIG.
Is substantially the same as the flow controller 200 according to the modification of the first embodiment described above. Hereinafter, only the differences between the sixth embodiment and the above-described first embodiment will be described, and redundant description will be omitted.

(Structure of the Sixth Embodiment) FIG. 16 is a longitudinal sectional view of a flow controller according to the sixth embodiment.

As can be seen from FIG. 16, the flow controller 200 according to the sixth embodiment includes a pipe 1 and a first closing section 2 and a second closing section inserted into the pipe 1. And 3.

The pipeline 1 is provided with an upstream portion 1 provided on the upstream side.
a, a downstream portion 1b provided on the downstream side, and an intermediate portion 1c provided between the upstream portion 1a and the downstream portion 1b.

FIG. 17 is a perspective view of the first closing part 2 and the second closing part 3. As can be seen from FIG. 17, in the flow regulator 200 according to the sixth embodiment, the first closing part 2 and the second closing part 3 are constituted by one component (member).

The outer diameter of the first closing part 2 is smaller than the inner diameter of the conduit 1. Further, the outer diameter of the second closing portion 3 is larger than the outer diameter of the first closing portion 2, but the present invention is not limited to this.

The first closing portion 2 and the second closing portion 3
Are coaxial, and a communication hole 54 for flowing a chemical solution or the like to the downstream side is provided in the first closed portion 2 and the second closed portion 3.
Is provided. The communication hole 54 has the same diameter from one end to the other end. That is, the second closing portion 3 is thicker than the first closing portion 2. In the present invention, the diameter of the communication hole 54 may be changed.

The above-mentioned slit 5 is provided at the upstream end (apex) of the first closing portion 2. When the flow rate is increased, the slit 5 is opened with the finger through the conduit 1 so that the slit 5 is opened and a chemical solution or the like is caused to flow downstream through the communication hole 54. .

FIG. 18 is a perspective view showing a state in which a part of the intermediate portion 1c of the pipeline 1 is seen through. As can be seen from FIG. 18, the intermediate portion 1c of the pipeline 1 has an inner diameter that is substantially the same as the outer diameter of the second closing portion 3 or slightly smaller than the outer diameter of the second closing portion 3. A first annular portion 60 provided in close contact with a part of the outer peripheral wall of the second closing portion 3 by being wound thereon.
The first annular portion 60 has an outer diameter larger than the outer diameter of the first annular portion 60 and a length longer than the length L of the first annular portion 60 in the longitudinal direction. The first annular portion 60 and the second annular portion 61 formed integrally with each other in a wound manner.

A groove portion 10 having a substantially V-shaped cross section is formed in the inner wall portion of the first annular portion 60 along its longitudinal direction. As will be described below, a chemical solution or the like is formed in the groove portion 10. It flows to the downstream side via.

As shown in FIGS. 16 and 18,
The inside diameter of the downstream end of the upstream section 1a of the pipeline 1 is larger than the outside diameter of the second closing section 3, and the outside diameter of the end section is the second annular section of the intermediate section 1c. Is it almost the same as the inside diameter of 61?
Or a little small. In the present invention, the present invention is not limited to this. For example, the upstream side la and the downstream end of the pipeline 1 may have the same diameter.

Similarly, the inner diameter of the upstream end of the downstream portion 1b of the pipeline 1 is larger than the outer diameter of the second closing portion 3, and the outer diameter of the end portion is equal to the intermediate portion 1c. Of the second annular portion 61
It is almost the same as or slightly smaller than the inside diameter of In the present invention, the present invention is not limited to this. For example, the downstream portion 1b and the upstream end of the pipeline 1 may have the same diameter.

The downstream end of the upstream portion 1a is
The end surface is fixed to the upstream side of the intermediate portion 1c such that the end surface contacts the end surface on the upstream side of the first annular portion 60 of the intermediate portion 1c.

Similarly, the upstream end of the downstream portion 1b is
The end surface is fixed to the downstream side of the intermediate portion 1c such that the end surface contacts the end surface of the intermediate portion 1c on the downstream side of the first annular portion 60.

Although not shown in FIG. 16,
The flow control device 200 is provided with the adjustment operation member 4 described with reference to FIGS. 1, 4, 5, 6 (a) and 6 (b) in the first embodiment. Pipeline 1 at part 14
The intermediate portion 1c of the intermediate portion 1c is provided by winding the groove portion 1 provided in the intermediate portion 1c.
The flow rate is adjusted by adjusting the opening / closing amount of zero.

In the present invention, for example, the upstream side portion 1a
And the intermediate portion 1c and the downstream portion 1b may be integrally formed.

(Operation of the Sixth Embodiment) In the flow regulator 200 having the above-described structure according to the sixth embodiment, when adjusting the flow rate, the pointer 13 shown in FIG. The slide operation of the adjustment operation member 4 is performed so as to indicate. Thereby, the opening and closing amount of the groove 10 provided in the first annular portion 60 of the intermediate portion 1c is adjusted to the opening and closing amount corresponding to the scale 12 indicated by the pointer 13. Groove 10
Is completely closed, the chemical solution flowing from the upstream side is stopped at the position of the first annular portion 60 from the second closing portion 3, but the adjusting operation member 4 is slid. When the opening of the groove 10 is controlled by the operation, a chemical solution having a flow rate corresponding to the opening control amount flows downstream through the groove 10 as shown by a solid line arrow in FIG.

As a result, a chemical solution having a flow rate corresponding to the scale 12 indicated by the pointer 13 can be caused to flow downstream.

Next, when increasing the flow rate, when the end (valve portion) on the upstream side of the first closing portion 2 is picked up with a finger via the pipe line 1,
The slit 5 that has been closed up to that time is opened, and as shown by a dotted arrow in FIG. 16, a chemical solution or the like in the pipe line 1 passes through the communication hole 54 of the first closing portion 2 from the slit 5. Flows downstream. Thus, a large amount of a chemical solution or the like can be temporarily flowed to the downstream side.

(Effect of Sixth Embodiment) As described above,
In the flow controller 200 according to the sixth embodiment, the pipe 1
Since the groove 10 is provided in the second closing portion 3 and the groove 10 is not provided in the second closing portion 3, the degree of freedom in selecting the constituent material of the second closing portion 3 is large (the second closing portion 3 is It is not necessary to have the above-mentioned appropriate hardness or the like), so that the first closure 2 and the second closure 3 are made of one piece made of a material suitable for the first closure 2 In addition to being able to be constituted by (members), the same effects as in the above-described first embodiment can be obtained.

[Seventh Embodiment] Next, a seventh embodiment of the flow controller according to the present invention will be described. The flow controller 200 according to the first embodiment has a configuration in which the chemical solution or the like that has passed through the groove 10 or the slit 5 flows directly downstream. The adjuster 200 is provided with a hard pipe (through pipe) in the first closing portion 2 so that a chemical solution or the like that has passed through the groove 10 or the slit 5 flows indirectly downstream through the pipe. It is composed.

That is, the flow controller 200 according to the seventh embodiment further comprises a liquid flowing downstream through the valve portion of the first closing portion 2 and a liquid flowing downstream through the groove. A third closing part (third closing means) for closing the flow, and a third closing part (first closing means) 2 penetrating through the third closing part (third closing means); A hard pipe (through pipe) provided in the flow path. It should be noted that the seventh embodiment is different from the above-described first embodiment only in this point, and hence only the difference will be described below, and redundant description will be omitted.

(Structure of Seventh Embodiment) FIG. 19 is a longitudinal sectional view of a flow rate controller according to the seventh embodiment. The above-described adjustment operation member 4 is also provided, but is not shown in FIG.

As can be seen from FIG. 19, the flow controller 200 according to the seventh embodiment has a hard pipe 65 in the pipeline 1.

The pipe portion 65 has a substantially annular flow stop portion (third closing means) 66 having an outer diameter substantially the same as the inner diameter of the pipe line 1 and an inner diameter of the first closing portion 2. Also has a small outer diameter, and is constituted by a pipe (through pipe) 67 integrally formed with the flow stop part 66 so as to be coaxial with the flow stop part 66. The lumen of the pipe 67 is open (opened) at the downstream end surface of the shutoff portion 66. That is, the pipe 67
Penetrates the shutoff portion 66.

[0148] The shut-off section 66 includes the first closing section 2 and the second closing section 2.
Is disposed downstream of the closing portion 3 and is separated from them by a predetermined distance. The outer wall of the flow stop portion 66 is fixed or adhered to the inner wall of the pipeline.

The pipe 67 is located inside the first closing portion 2 except for the downstream end. The upstream end of the pipe 67 is located near the slit 5.

As described above, the first flow path 51 from the upper side to the lower side in FIG. 19, the second flow path 52 from the lower side to the upper side in FIG. The third flow path 53 from the upper side to the lower side is formed concentrically (coaxially) in this order.

Examples of the constituent material of the pipe portion 65 (particularly, the pipe 67) include polymer materials such as polycarbonate, polyolefin, nylon, acrylonitrile-butadiene-styrene copolymer (ABS resin), vinyl chloride resin, and polysulfone; Metal materials such as aluminum, titanium, duralumin, stainless steel and the like can be mentioned. Further, the pipe portion 65 (particularly, the pipe 67) is preferably transparent (having light transmissivity) so that air bubbles and the like in the flow path can be visually recognized (confirmed) from the outside.

(Operation of Seventh Embodiment) In the flow controller 200 according to the seventh embodiment, the chemical or the like flowing through the pipeline 1 from the upstream side is first subjected to the first flow. 19, flows from the upper side to the lower side in FIG. 19 along the path 51, passes through the groove 10, and then flows in the opposite direction along the second flow path 52, that is, from the lower side to the upper side in FIG. The flow flows in the opposite direction along the third flow path 53, that is, from the upper side to the lower side in FIG.

To increase the flow rate, when the upstream end (valve portion) of the first closing portion 2 is picked up through the pipeline 1, the slit 5 is opened, and the slit 5 is opened. As a result, a large amount of a chemical solution or the like flows directly into the pipe 67, that is, into the third flow path 53, and flows along the third flow path 53 in FIG.
It flows from the upper middle to the lower side, and further flows downstream in the pipeline 1.

(Effects of the Seventh Embodiment) In the flow controller 200 according to the seventh embodiment, it is possible to substantially eliminate a stagnant portion in which a liquid, a gas or the like stagnates. Thereby, for example, the concentration of the drug solution or the like can be maintained at a predetermined constant concentration.

The pipe 67 is made of a hard member (hard material).
When the flow rate is increased, the pipe 67 serves as a support and the third flow path 53 is closed even if the finger for gripping the first closing portion 2 is excessively pressed when increasing the flow rate. Can be prevented. That is, when increasing the flow rate, it is possible to prevent the third flow path 53 from being closed so that a chemical solution or the like does not flow or the third flow path 53 from being too narrow to obtain a sufficient flow rate. can do.

The flow controller 200 according to the seventh embodiment can also obtain the same effects as those of the first embodiment.

[Eighth Embodiment] Next, an eighth embodiment of the flow controller according to the present invention will be described. The flow controller 200 according to each of the embodiments described above mainly uses the adjusting operation member 4 provided with the pair of ribs 20 and 21 described with reference to FIGS. 5 and 6. The flow controller 200 according to the eighth embodiment has an adjustment operation member having two pairs of ribs instead of the adjustment operation member 4. The eighth embodiment is different from the above-described embodiments only in this point, and therefore, only the difference will be described below, and redundant description will be omitted.

(Structure of the Eighth Embodiment) FIG. 20 is a perspective view showing the appearance of the adjusting operation member 70 of the flow rate controller according to the eighth embodiment.

As can be seen from FIG. 20, the adjusting operation member (opening / closing amount adjusting means) 70 is a substantially cylindrical winding portion provided in a state of winding the portion where the second closing portion 3 is provided. 71, and a semi-cylindrical operating portion 72 formed integrally with the winding portion 71.

FIGS. 21 (a) and 21 (b) are cross-sectional views of the portion where the above-mentioned second closing portion 3 is provided in a state where the adjusting operation member 70 is provided in the pipeline 1. FIG. . FIG. 21A shows a fully opened state of the groove 10 (C in FIG. 22B).
21B shows a fully closed state of the groove 10 (a cross-sectional view taken along line AB in FIG. 22A).

As can be seen from FIGS. 20 and 21A and 21B, the first rib 73, the second rib 74, the third rib 75, and the Fourth ribs 76 are provided, respectively. Each rib 73-76
Respectively, along the axis of the winding part 71,
1 is formed from one end to the other end.

The first rib 73, the second rib 74,
The third rib 75 and the fourth rib 76 are, in this order,
In FIG. 21, they are arranged at equal intervals (90 ° intervals) in the clockwise direction. That is, in the cross section of the winding portion 71,
A straight line connecting the first rib 73 and the third rib 75 and a second
The ribs 73 to 76 are arranged such that a straight line connecting the rib 74 and the fourth rib 76 is substantially orthogonal.

Of these ribs 73 to 76, the first rib 73 and the third rib 75, which are in opposition to each other, are
The height of the upstream portion is low as shown in FIG. 21 (a), but the height gradually decreases toward the downstream side as shown in FIG. 21 (b). (The heights of the first rib 73 and the third rib 75 gradually increase from the upstream side to the downstream side, respectively).

That is, the first rib 73 and the third rib 7
5 gradually decreases from the upstream side to the downstream side along the axial direction of the winding portion 71.

On the contrary, of the ribs 73 to 76, the second rib 74 and the fourth rib
The ribs 76 of FIG.
Although the height of the upstream portion is high as shown in FIG. 21A, the height is gradually reduced toward the downstream side as shown in FIG. 21B. The height of each of the second rib 74 and the fourth rib 76 gradually decreases from the upstream side to the downstream side.)

That is, the second rib 74 and the fourth rib 7
6 gradually increases from the upstream side to the downstream side along the axial direction of the winding portion 71. In addition, the groove 10
Are located near the apex of the first rib 73.

(Operation of Eighth Embodiment) FIG.
(A), (b) is a longitudinal cross-sectional view of the flow controller 200 in the state where the adjustment operation member 70 was provided in the pipeline 1. And
FIG. 22A shows the operation position (position) of the adjustment operation member 70 when the groove 10 is in the fully closed state as shown in FIG. 21B, and FIG. The operation position (position) of the adjustment operation member 70 when the groove 10 is in the fully opened state as shown in FIG.

As shown in FIGS. 21A and 21B,
Each of the ribs 73 to 76 of the adjustment operation member 70 is always in contact (contact) with the outer peripheral surface of the pipe 1 near the groove 10. That is, the pipeline 1, the first closing portion 2, and the second closing portion 3 are pressed by predetermined ribs among the ribs 73 to 76.

First, as shown in FIG. 22A, the adjustment operation member 70 is moved to the downstream side until the downstream end of the winding portion 71 of the adjustment operation member 70 is located near the second closing portion 3. , The distance between the second rib 74 and the fourth rib 76 of the winding part 71 gradually increases, and
The distance between the first rib 73 and the third rib 75 gradually narrows. Therefore, the first and third ribs 73 and 75 push the second closing portion 3 through the conduit 1 from the same direction as the diameter passing through the groove 10, and the groove 10 is gradually closed. . Then, at the end of the push-up operation shown in FIG. 22A, the groove 10 is completely closed by the first and third ribs 73 and 75 as shown in FIG. 21B.

Next, as shown in FIG. 22B, the adjustment operation member 70 is moved upstream until the upstream end of the winding portion 71 of the adjustment operation member 70 is located near the second closing portion 3. When it is pushed down from the side toward the downstream side, the interval between the second rib 74 and the fourth rib 76 of the winding part 71 is gradually narrowed, and
The distance between the first rib 73 and the third rib 75 gradually increases. Therefore, the second closing portion 3 is pressed by the second and fourth ribs 74 and 76 from the direction orthogonal to the diameter passing through the groove portion 10 through the conduit 1, and the groove portion 10 is gradually opened. You. Then, at the end of the push-down operation shown in FIG. 22B, the groove 10 is completely opened (the most open state) by the second and fourth ribs 74 and 76 as shown in FIG. 21A. It is said.

The operator moves the adjusting operation member 70 to a desired position.
Is operated to adjust the size of the groove 10 using the height difference between the ribs 73 to 76. This allows
A flow rate corresponding to the position of the adjustment operation member 70 can be obtained.

Here, in the closed state, for example, the inner surface interval in the direction of the groove 10 of the pipeline 1 is made smaller than the outer diameter of the second closing portion 3, and the elastic force of the pipeline 1 is used. It can also be obtained by:

(Effects of the Eighth Embodiment) As described above, in the flow controller 200 of the eighth embodiment, the winding section 7
By sliding the adjustment operation member 70 provided with two pairs of ribs 73 to 76 having a height difference inside 1,
A desired flow rate can be easily obtained by adjusting the opening / closing amount of the groove 10 provided in the second closing portion 3.

Further, since the first to fourth ribs 73 to 76 support the second closing portion 3 at four points via the conduit 1, the amount of deformation of the second closing portion 3 (the groove 10 Can be easily and reliably regulated. Further, even when the adjusting operation member 70 is slid, the axis is hard to be shifted. For this reason, it is possible to provide the flow controller 200 with higher accuracy and less change over time, and it is possible to obtain the same effects as those of the above-described embodiments.

By arranging the groove 10 in the vicinity of the second rib 74 or the fourth rib 76, the adjusting operation member 70 is provided.
Can be controlled to be opened when the pressure is pushed up from the downstream side to the upstream side.

When the friction between the winding portion 71 and the pipe line 1 is so large that it is difficult to slide the adjusting operation member 70, the pipe except for the vicinity of the second closing portion 3 which is in contact with the winding portion 71 is removed. The outer diameter of the passage 1 may be reduced to reduce the contact area between the winding portion 71 and the conduit 1. Conversely, if the adjusting operation member 70 mounted on the pipe 1 is shaky, for example,
As shown in FIG. 2, the winding part 71 and the pipeline 1 are closely adhered as a whole, or the winding part 71 is partially connected to only the upstream end and the downstream end of the winding part 71. And the winding portion 71 may be brought into close contact.

In the description of the eighth embodiment,
Although the adjusting operation member 70 provided with the four ribs 73 to 76 is provided, for example, the major axis (major axis) of the inner cross-sectional shape is gradually shortened along the axial direction, and the minor axis (minor axis) is provided. ) Changes gradually so as to become longer, and the long side (one of two sides that are substantially orthogonal) whose inner cross-sectional shape is gradually shortened along the axial direction. A square pipe-shaped adjusting operation member that changes so that the side (the other side of the two sides that are substantially orthogonal) gradually increases may be provided.

That is, in the cross section of the winding portion 71,
The distance between the inner peripheral surface of the winding portion 71 on one straight line of a pair of substantially straight lines passing through the substantially center of the winding portion 71 and extending along the axial direction of the winding portion 71 The distance between the inner peripheral surfaces of the winding portions 71 on the other straight line is gradually increased.
1, gradually decreasing along the axial direction, near a predetermined intersection of the intersection between the pair of straight lines and the inner peripheral surface of the winding portion 71,
What is necessary is just to be comprised so that the groove part 10 may be located. Even in such a case, the same effect as described above can be obtained.

[Ninth Embodiment] Next, a ninth embodiment of the flow controller according to the present invention will be described. This ninth
The flow controller 200 according to the embodiment has a guide groove and a guide rib (rotation preventing means) for preventing the rotation of the adjusting operation member 70 with respect to the pipe line 1, so that the adjusting operation member 7 is provided.
Even when the force in the rotation direction is applied at the time of the sliding operation of 0, the appropriate positional relationship between the groove 10 and each of the ribs 73 to 76 in the circumferential direction is maintained so that the flow rate can be adjusted accurately.

Note that the ninth embodiment and the above-described eighth embodiment
Since only this point differs from the first embodiment,
Only the difference will be described, and redundant description will be omitted.

(Structure of Ninth Embodiment) FIG. 23 shows a second closing portion of the flow regulator according to the ninth embodiment in which the adjusting operation member 70 is provided in the pipeline 1. It is a cross-sectional view of 3 parts.

As can be seen from FIG. 23, in the flow controller 200 according to the ninth embodiment, the pipe 1
A pair of guide grooves 130 and 131 are provided at two locations on a straight line orthogonal to the diameter passing through the groove 10 along the axis of the conduit 1.

At the apexes of the second and fourth ribs 74 and 76 located on a straight line perpendicular to the diameter passing through the groove 10, the guide grooves 130 and 131 of the pipe 1 can slide freely. Guide ribs 132 and 133 to be fitted are provided along the axis of the winding section 71, respectively.

Incidentally, the pair of guide grooves 130, 131
And the pair of guide ribs 132 and 133 constitute a rotation preventing means.

(Operation of the Ninth Embodiment) The flow controller 200 according to the ninth embodiment includes the adjusting operation member 7.
When the slide operation is performed on each of the guide ribs 132 and 133,
Are moved along the guide grooves 130 and 131, and the adjustment operation member 70 slides.

(Effects of the Ninth Embodiment) In the flow controller 200 of the ninth embodiment, since the guide ribs 132 and 133 are fitted in the guide grooves 130 and 131, the adjustment is performed. Even when a force in the rotation direction is applied when the operation member 70 is slid, the rotation of the adjustment operation member 70 with respect to the pipeline 1 is prevented, and the groove 10 and the ribs 73 to
The adjustment operation member 7 is maintained in a state where the proper positional relationship of 76 is maintained.
0 can be slid so that the flow rate can be adjusted more accurately and reliably.

Note that in the description of the ninth embodiment,
The guide grooves 130 and 131 are provided on the pipe 1 side, and the guide ribs 132 and 133 are provided on the adjustment operation member 70 side. Conversely, a guide groove is provided on the adjustment operation member 70 side and the guide ribs are provided on the pipe 1 side. May be provided. Further, the guide ribs and the guide grooves are provided with second and fourth ribs 74,
It may be provided at a location other than 76, for example, between the first rib 73 and the second rib 74.

[Tenth Embodiment] Next, a tenth embodiment of the flow controller according to the present invention will be described. The flow controller 200 according to each of the above-described embodiments, when increasing the flow rate, plucks a portion where the slit 5 is provided with a finger to open the slit 5 to flow a large amount of a drug solution or the like downstream. However, the flow controller 200 according to the tenth embodiment has the slit 5 opened by the adjustment operation member 4 (or the adjustment operation member 70).

Since the tenth embodiment differs from the above-described embodiments only in this point, only the difference will be described below, and redundant description will be omitted.
Further, the technical idea according to the present invention applied as the tenth embodiment can be applied not only to the adjustment operation member 4 but also to the adjustment operation member 70. The case where the present invention is applied to the operation member 4 will be described.

(Structure of Tenth Embodiment) FIG.
It is a longitudinal cross-sectional view of the flow rate controller of the tenth embodiment.

As can be seen from FIG. 24, on the inner peripheral surface of the upstream end of the adjusting operation member 4 of the flow controller 200 of the tenth embodiment, a projection ( A projection 120 is provided. That is, this protrusion 1
Reference numeral 20 is formed so that a pressure can be applied to the first closing portion 2 through the conduit 1 to such an extent that the slit 5 can be opened. The outer shape of the cross section of the pipeline 1 is substantially elliptical.

FIG. 25 is a perspective view of the upstream end of the adjusting operation member 4 provided with the projection 120. As shown in FIG.

As can be seen from FIG. 25, the diameter of the opening 121 at the upstream end of the adjustment operation member 4 is smaller than the diameter of the opening 122 at the downstream side of the adjustment operation member 4. In order to make the diameter of the opening 121 smaller than the diameter of the opening 122, a portion projecting toward the pipeline 1 is the protrusion 120.

(Operation of the Tenth Embodiment) In the flow regulator 200 of the tenth embodiment, by sliding the adjusting operation member 4 as described above, the second closing portion 3 can be moved. The flow rate of a chemical solution or the like is adjusted by controlling the opening and closing of the groove 10 provided. When the adjustment operation member 4 is slid to the most downstream side, the projection 120 is moved to the first closing portion 2.
Is located at or near the upstream end (valve portion) of the first closing portion 2 and is connected to the upstream end of the first closing portion 2 by the projection 120.
, And the slit 5 which has been in the closed state is opened. Thus, a large amount of a chemical solution or the like can be caused to flow downstream through the slit 5.

(Modification of the Tenth Embodiment) In the above example, when the adjusting operation member 4 is slid to the most downstream side, a large flow rate (flash) is obtained.
Conversely, the flow rate may be large when the adjustment operation member 4 is slid to the most upstream side. This example is shown in FIG.

That is, in this modification, as shown in FIG. 26, when the adjusting operation member 4 is slid to the most upstream side, the projection 120 is moved to the upstream end (valve portion) of the first closing portion 2. Alternatively, a pressure is applied to the upstream end of the first closing portion 2 via the pipe line 1 by the protrusion 120, and the slit 5 which has been closed is opened. Thus, a large amount of a chemical solution or the like can be caused to flow downstream through the slit 5.

(Effects of the Tenth Embodiment) As described above, in the flow controller 200 of the tenth embodiment, a large flow can be obtained by sliding the adjusting operation member 4. For this reason, when increasing the flow rate, the flow rate can be mechanically adjusted, and anyone can easily obtain a stable flow rate.

Opening / closing of the slit 5 (opening / closing of the valve section)
And the adjustment of the opening / closing amount of the groove 10 by one adjustment operation member 4.
Can also be used. Thus, the number of components can be reduced and the structure can be simplified as compared with a case where a dedicated operation member is provided for each operation.

In the tenth embodiment, FIG.
As shown in FIG. 5, the protrusion 120 is formed in a ring shape along the inner circumference (outer circumference of the pipeline 1) of the adjustment operation member 4, but is not limited thereto. 4
May be provided with a pair of projections (projections). That is, a protrusion (convex portion) may be provided partially on the adjustment operation member 4.

In this case, the degree of crushing (the amount of deformation) of the first closing portion 2 and the direction of crushing (the direction of pressure) are mechanically determined by the distance between the protrusions and the position of the protrusions. For this reason, it is possible to prevent inconvenience such that the first closing portion 2 is excessively crushed by the finger and the first closing portion 2 is crushed too much to reduce the flow rate or the slit 5 is not opened by mistake in the crushing direction. Can be.

The projection may have an elliptical shape whose major axis is sufficiently larger than that of the pipeline 1.

[Eleventh Embodiment] Next, an eleventh embodiment of the flow controller according to the present invention will be described. The flow controller 200 according to each of the above-described embodiments includes the adjusting operation member 4
Alternatively, by sliding the adjusting operation member 70,
The opening / closing amount of the liquid is adjusted to adjust the flow rate of a chemical solution or the like. However, the flow controller 200 of the eleventh embodiment is
The opening / closing amount of the groove 10 is adjusted by a rotating operation type adjusting operation member to adjust the flow rate of the chemical solution or the like.

It is to be noted that each of the above-described embodiments is different from the eleventh embodiment only in this point, and hence only the difference will be described below, and redundant description will be omitted.

(Configuration of Eleventh Embodiment) FIG.
FIG. 28 is a perspective view of the flow controller of the eleventh embodiment,
It is a longitudinal section of a flow rate adjuster of an eleventh embodiment.

As shown in FIG. 27, this flow controller 20
The external appearance of the rotary operation type adjusting operation member (opening / closing amount adjusting means) 80 at 0 has a cylindrical shape, and winds the pipe line 1 from above the second closing portion 3 as shown in FIG. It is provided in the form of In other words, an insertion hole (through hole) 81 is provided substantially at the center of the adjustment operation member 80, and by inserting the conduit 1 into the insertion hole 81, the adjustment operation member 80 is connected to the conduit 1. On the other hand, it is installed so as to be able to rotate (rotate) in both forward and reverse directions along its circumferential direction.

The shape of the insertion hole 81 into which the pipe 1 is inserted in the cross section (the inner shape in the cross section of the adjusting operation member 80) is shown in FIG. 27 (see FIGS. 29A and 29B). It has an elliptical shape as shown in FIG.

Further, since the insertion hole 81 has an elliptical shape, it has a major axis and a minor axis. At least the minor axis is smaller than the outer diameter of the pipeline 1. For this reason, each of the conduit 1, the first closing portion 2, and the second closing portion 3 of the portion inserted into the insertion hole 81 has an outer shape in a cross section along the insertion hole 81 to be an elliptical shape. It is in a state of being crushed.

A pointer 83 is provided on the downstream end surface portion 82 of the adjusting operation member 80, and is provided on the pipe 1 side (for example, the pipe 1, the first closing section 2, the second closing section 3). ) Are provided with scales 84 corresponding to the pointers 83 and indicating a flow rate of a chemical solution or the like. The scale 84 is provided in the groove 10 of the second closing portion 3 corresponding to the rotational position of the adjusting operation member 80.
Is provided based on the opening / closing amount of the pointer.
By adjusting 3 to a desired scale 84, the opening / closing amount of the groove 10 is adjusted to obtain a desired flow rate.

As shown in FIG. 28, a guide rib 85 is provided along the circumferential direction on the inner peripheral portion of the downstream end portion of the adjusting operation member 80, and the guide rib 85 is provided on the outer peripheral portion of the pipeline 1. Guide grooves 86 are provided along the circumferential direction corresponding to the guide ribs 85. Guide rib 85 of adjustment operation member 80
Are rotatably fitted along a guide groove 86 provided on the pipeline 1 side. The adjustment operation member 80 is rotatably held at a fixed position in the axial direction on the pipeline 1 by the guide rib 85 and the guide groove 86, and the adjustment operation member 80 is moved relative to the pipeline 1 by a rotation operation by an operator. It is designed not to slide in the axial direction to cause a positional shift.

[0210] The guide groove 86 and the guide rib 85 constitute slide prevention means.

Further, as shown in FIG. 28, a slit 5 is provided at the upstream end of the first closing portion 2 provided in the pipeline 1, and this slit 5 is formed. The portion (valve portion) is located upstream of the adjustment operation member 80.

(Operation of Eleventh Embodiment) FIG.
(A), (b) is a cross-sectional view of the flow rate controller of the eleventh embodiment, and FIG. 29 (a) shows the rotational position of the adjusting operation member 80 in which the groove 10 is in a fully closed state. , FIG. 29
(B) is an adjusting operation member 80 in which the groove 10 is fully opened.
Shows the rotational position of. 29A and 29B.
The dotted line in the middle indicates the pointer 8 provided on the adjustment operation member 80.
3 is shown.

First, the downstream end face 8 of the adjusting operation member 80
When the adjusting operation member 80 is rotated so that the pointer 83 provided on the pipe 2 is aligned with the scale 84 provided on the pipe line 1 indicating zero flow rate, the elliptical shape as shown in FIG. Insertion hole 81 of adjusting operation member 80
And the groove 10 coincide with each other. As described above, the length of the short diameter is shorter than the length of the outer diameter of the pipeline 1. For this reason, a pressing force is applied to the second closing portion 3 via the pipe 1 by the inner peripheral wall of the short diameter portion of the adjusting operation member 80, and the groove portion 1 provided in the second closing portion 3 is provided.
0 is in the fully closed state as shown in FIG. Therefore, the flow of the drug solution or the like from the upstream side to the downstream side is stopped by the groove 10 in the fully closed state.

Next, when the adjusting operation member 80 is rotated clockwise (or counterclockwise) in FIG. 29 from this state, the position where the pressing force from the inner peripheral wall of the short diameter portion of the adjusting operating member 80 is applied is changed. The groove 10 moves in the circumferential direction from the position of the groove 10, whereby the opening / closing amount of the groove 10 gradually increases. Then, when the adjustment operation member 80 is rotated by 90 °, that is, at the rotation position where the major axis of the insertion hole 81 of the adjustment operation member 80 matches the groove portion 10, the groove portion 10 is fully opened as shown in FIG. State.

The operator rotates the adjustment operation member 80 relative to the pipe line 1 in this manner, whereby the groove 10 is rotated.
Is adjusted between the fully closed state and the fully opened state, and the flow rate of a chemical solution or the like flowing downstream is adjusted.

As described above, the upstream end portion (valve portion) of the first closing portion 2 protrudes upstream from the adjusting operation member 80. As described above, the upstream end of the first closing portion 2 is pinched by a finger through the pipe line 1 to open the slit 5. As a result, a large amount of a chemical solution or the like flows to the downstream side through the slit 5 opened.

(Effects of Eleventh Embodiment) As described above, the flow controller 200 according to the eleventh embodiment is provided with the adjusting operation member 80 having the elliptical insertion hole 81. By rotating the second closing part 3
The opening / closing amount of the groove portion 10 is controlled by changing the pressing force applied to the groove, so that the flow rate of a chemical solution or the like flowing to the downstream side is adjusted. Accordingly, the same effects as those of the above-described embodiments can be obtained, such that anyone can surely adjust the flow rate with a simple rotation operation.

As shown by a dotted line in FIG. 28, a positioning rib 88 abutting on the downstream end face of the first closing portion 2 is provided.
May be provided. The rib 88 is preferably provided so as not to close a flow path of a chemical solution or the like flowing downstream via the groove 10. By providing the ribs 88, the installation positions of the first closing portion 2 and the second closing portion 3 can be positioned with respect to the pipeline 1, thereby facilitating the assembly of the flow controller 200. Can be.

Although the outer shape of the adjusting operation member 80 in the cross section is a circle, it may be another shape such as an ellipse or a polygon.

The shape of the insertion hole 81 of the adjusting operation member 80 in the cross section is elliptical, but is not limited to this.

The adjusting operation member 80 is configured to apply pressure to the pipeline 1 and the first closing portion 2 at two points when viewed in a cross section. Preferably, it is configured to apply pressure to the first closure 2.

The adjusting operation member 80 may be in contact with the pipe 1 over the entire circumference.

For example, a plurality of ribs as described with reference to FIGS. 6A and 6B are provided on the inner peripheral surface of the adjusting operation member 80, and the opening and closing amount of the groove 10 is adjusted by the ribs. It may be. It is preferable that the number of ribs provided on the adjustment operation member 80 is three or more in order to fix the rotation axis of the adjustment operation member 80 with respect to the pipeline 1, the first closing portion 2, and the second closing portion 3. .

In the description of the eleventh embodiment, the guide groove 86 is provided on the pipe 1 side, and the adjusting operation member 80 is provided.
Although the guide rib 85 is provided on the side, the guide groove may be provided on the adjustment operation member 80 side, and the guide rib may be provided on the pipeline 1 side.

The guide grooves and guide ribs, and the scales and hands may be arranged on the upstream side.
A pointer may be provided on the side, and a scale may be provided on the adjustment operation member 80 side.

[Twelfth Embodiment] Next, a twelfth embodiment of the flow controller according to the present invention will be described. In the flow controller 200 of the twelfth embodiment, the pressure applied to the pipeline 1 and the second closing portion 3 is such that the inner shape of the cross section of the adjusting operation member 80 in the cross section exceeds 90 °. It has a shape that gradually increases or decreases.

Since the eleventh embodiment differs from the twelfth embodiment only in this point, only the difference will be described below, and redundant description will be omitted.

(Configuration of the Twelfth Embodiment) FIG.
(A), (b), (c) is a cross-sectional view of the flow controller of the twelfth embodiment, respectively, FIG. 30 (a) is an adjusting operation member 80 in which the groove 10 is fully closed 30 (c) shows the rotational position of the adjusting operation member 80 in which the groove 10 is fully opened, and FIG. 30 (b) shows the rotational position of the groove 10 between the fully closed state and the fully open state. The rotation position of the adjustment operation member 80 in an intermediate state is shown.

As can be seen from FIGS. 30 (a), (b) and (c), the flow controller 20 according to the twelfth embodiment is described.
Reference numeral 0 indicates that the outer shape and inner shape of the cross section of the pipeline 1 are substantially elliptical, and accordingly, the outer shape and the inner shape of the first and second closing portions 2 and 3 provided in the pipeline 1 The inner shape is also substantially elliptical. The groove 10 provided in the second closing part 3 is located near the minor axis (minor axis) of the ellipse (on the minor axis in the present embodiment).
When no pressing force is applied to the motor, the motor is fully closed.

The adjusting operation member 80 is provided with an insertion hole 90 having a diameter (not constant) smaller than the long diameter of the conduit 1 having a substantially elliptical cross section, as shown in FIG. Have been.

Specifically, the distance between two points on the inner peripheral wall opposed to each other with the center of the adjusting operation member 80 (hereinafter, simply referred to as “inner diameter”) changed from the position 141 to the position 142 of the adjusting operating member 80. It gradually decreases in the counterclockwise direction in FIG.

That is, the position 141 of the adjusting operation member 80
The distance (inner diameter) between the point 151 on the inner peripheral wall at and the point 152 on the inner peripheral wall facing the point 151 via the center is the largest, and the point 1 on the inner peripheral wall at the position 142 is
The distance between 53 and a point 154 on the inner peripheral wall opposite the point 153 via the center is the minimum.

The central angle from the position 141 to the position 142 (the amount of rotation of the adjusting operation member 80) is larger than 90 °.

(Operation of the Twelfth Embodiment) FIG.
(A) shows the rotational position of the adjusting operation member 80 when the outer peripheral portions 93 and 94 located on the major axis of the conduit 1 having a substantially elliptical cross section are located at points 151 and 152. As can be seen from FIG. 30 (a), when the adjustment operation member 80 is rotated to the rotation position where the outer peripheral portions 93 and 94 of the pipeline 1 are located at points 151 and 152, the adjustment operation member 8 is rotated.
The pressing force applied from the inner peripheral wall of the second closing portion 3 via the pipe line 1 to the second closing portion 3 becomes zero (minimum).

As described above, the groove 10 of the second closing portion 3
Is fully closed when the pressing force becomes zero. For this reason,
In the rotation position of the adjustment operation member 80 shown in FIG.
The flow of the chemical solution or the like from the upstream side to the downstream side is stopped.

Next, when the adjustment operation member 80 is rotated clockwise in FIG. 30 from this state, the adjustment operation member 8 is rotated.
0, the inner diameter of the outer peripheral portion 9 is gradually reduced.
The pressing force of the inner peripheral wall of the adjusting operation member 80 against the third and third members 94 gradually increases, and the second closing portion 3 is gradually crushed through the conduit 1.

As a result, as shown in FIG.
The opening and closing amount of the groove 10 provided in the second closing portion 3 gradually increases.

Then, as shown in FIG. 30C, when the adjusting operation member 80 is rotated to the rotation position where the outer peripheral portions 93 and 94 of the pipeline 1 are located at points 153 and 154, the inside of the adjusting operation member 80 The pressing force applied from the peripheral wall to the second closing portion 3 via the pipe line 1 becomes maximum, and the groove 10 of the second closing portion 3
Is fully opened.

The operator rotates the adjustment operation member 80 relative to the pipe line 1 in this manner, so that the groove 10
Is adjusted between the fully closed state and the fully opened state, and the flow rate of a chemical solution or the like flowing downstream is adjusted.

(Effect of the Twelfth Embodiment) The first embodiment described above
In the flow controller 200 according to the first embodiment, FIG.
Although the rotation operation range of the adjustment operation member 80 is 90 ° as shown in (a) and (b), in the flow regulator 200 of the twelfth embodiment, the rotation operation range of the adjustment operation member 80 is It can be greater than 90 °. For this reason, the flow rate can be adjusted more finely (delicately) than the flow rate adjuster 200 of the eleventh embodiment.

In addition, the same effects as in the eleventh embodiment can be obtained. In the twelfth embodiment, the minor diameter on the inner peripheral side of the conduit 1 having a substantially elliptical cross section is defined by the second closing part 3 having a substantially elliptical cross section in which the groove 10 is provided. By making it shorter than the minor diameter on the outer peripheral side of, the second closing portion 3 can always be in a state in which some pressing force is applied by the pipe line 1, so that the groove portion 10 can be surely closed. it can.

Similarly, the ratio of the major axis / minor axis of the second closing portion 3 is made smaller than the ratio of the major axis / minor axis of the first closing portion 2 and the ratio of the major axis / minor axis of the conduit 1 is also made smaller. By doing so, the second closing portion 3 can be in a state where a certain amount of pressing force is constantly applied from inside and outside (inside: the first closing portion 2, outside: the pipeline 1). Can be reliably closed.

[Thirteenth Embodiment] Next, a thirteenth embodiment of the flow controller 200 according to the present invention will be described. The flow controller 200 according to the thirteenth embodiment has the same configuration as the flow controller 200 according to the twelfth embodiment.
This realizes a rotation operation range larger than 0 °.

Hereinafter, only the differences between the twelfth embodiment and the thirteenth embodiment will be described, and redundant description will be omitted.

(Configuration of Thirteenth Embodiment) FIG.
(A), (b), (c) is a cross-sectional view of the flow controller of the twelfth embodiment, respectively, FIG. 31 (a) is an adjustment operation member 80 in which the groove 10 is fully closed FIG. 31 (c) shows the rotational position of the adjusting operation member 80 in which the groove 10 is fully opened, and FIG. 31 (b) shows the rotational position of the groove 10 in the fully closed state and the fully open state. The rotation position of the adjustment operation member 80 in an intermediate state is shown.

As can be seen from FIGS. 31 (a), (b) and (c), the flow controller 20 of the thirteenth embodiment can be used.
When viewed in a cross section, the zero adjustment operation member 80 has an inner peripheral wall (inside) of the adjustment operation member 80 within a range exceeding the 90 ° rotation operation range (a range in which the central angle exceeds 90 °). The curvature of the peripheral surface is gradually increased (or gradually decreased).

That is, the central angle from point 97 to point 99 (the amount of rotation of the adjusting operation member 80) is larger than 90 °,
The curvature of the inner peripheral wall of the adjustment operation member 80 is
31 (the curvature becomes minimum at point 97 and becomes maximum at point 99).

The pipe 1 is provided so as to abut on the inner peripheral wall of the adjusting operation member 80 over the entire circumference, and the second closing portion 3 is provided with the pipe over the entire circumference. The first closing portion 2 is provided so as to be in close contact with the inner peripheral wall of the road 1, and is provided so as to be in close contact with the inner peripheral wall of the second closing portion 3 over the entire circumference. .

The groove 1 provided in the second closing portion 3
0 is in a fully closed state when located near a point 97 where the curvature is minimum, as shown in FIG.

(Operation of Thirteenth Embodiment) FIG.
As shown in (a), when the groove 10 is located near the point 97 on the inner peripheral wall of the adjusting operation member 80, the groove 10 is in the fully closed state. As it is rotated, as shown in FIG. 31B, the curvature of the inner peripheral wall of the adjusting operation member 80 in the vicinity of the groove 10 gradually increases, and as a result, the vicinity of the groove 10 in the second closing portion 3 The curvature of the part also increases, the groove 1
The opening / closing amount of 0 gradually increases, and the flow rate of a chemical solution or the like increases.

Further, the adjusting operation member 80 is rotated clockwise, and as shown in FIG. 31C, when the groove 10 is located near the point 99 on the inner peripheral wall of the adjusting operating member 80,
The curvature of the portion near the groove 10 of the second closing portion 3 is maximized, the groove 10 is fully opened, and the flow rate of the chemical solution or the like is maximized.

(Effect of the thirteenth embodiment) According to the flow controller 200 of the thirteenth embodiment,
The rotating shaft can be fixed without separately providing means for fixing the rotating shaft, and the same effects as in the twelfth embodiment can be obtained.

(Modification of the thirteenth embodiment) The first
In the flow controller 200 according to the third embodiment, FIG.
As shown in (a) to (c), a plurality of ribs 110 may be provided in the circumferential direction along the inner peripheral wall of the adjustment operation member 80.

In this case, since the portion of the inner peripheral wall of the adjusting operation member 80 other than the ribs 110 is a portion that is not in contact with the pipeline 1, the resistance during the rotation operation can be reduced.

Although the number of the ribs 110 is not particularly limited, it is preferable to provide three or more ribs, since a means for fixing the rotating shaft can be omitted as described above.

[Fourteenth Embodiment] Next, a fourteenth embodiment of the flow controller according to the present invention will be described. The flow regulator 200 according to the fourteenth embodiment is provided with means for fixing the rotating shaft so that the rotating shaft does not shift during the rotating operation.

The eleventh embodiment differs from the fourteenth embodiment only in this point. Hereinafter, only this difference will be described and redundant description will be omitted.

(Structure of Fourteenth Embodiment) FIG.
It is a longitudinal section of the flow rate adjuster of a 14th embodiment.

In FIG. 33, the flow controller 20
Reference numeral 0 denotes a rotary adjustment operation member (opening / closing amount adjusting means) 1 including an upstream hard rotating portion (rotating portion) 100 and a downstream hard fixing portion (fixing portion) 101 formed of hard members.
03. The downstream hard fixing portion 101 is located downstream of the upstream hard rotating portion 100.

[0260] A guide groove 104 is provided along the circumferential direction at the connection portion of the upstream hard rotating portion 100 with the downstream hard fixed portion 101, and the upstream hard rotating portion 100 of the downstream hard fixed portion 101 is provided. A guide rib 105 rotatably fitted to the guide groove 104 on the upstream side hard rotating portion 100 side is provided along the circumferential direction at the connection portion with the upper hard rotating portion 100.

The guide rib 105 and the guide groove 10
4, the upstream hard rotary unit 100 is rotatably held at a fixed position in the axial direction with respect to the pipe line 1 and the downstream hard fixed unit 101, and the upstream hard rotary unit 100 is rotated by an operator. The axial displacement does not occur with respect to the path 1 and the downstream side rigid fixing portion 101 in the axial direction so that a positional deviation does not occur.

The guide rib 105 and the guide groove 104 constitute a slide prevention means.

In the adjusting operation member 103, a pipe hole 106 communicating from the upstream side to the downstream side is provided.

The upstream pipe 1 is inserted into the pipe hole 106, and the downstream hard fixing portion 101 is liquid-tightly connected (fixed) to the downstream of the upstream pipe 1. ing.

FIG. 34 is a perspective view of the upstream pipeline 1 installed in the adjusting operation member 103. As shown in FIG.

As can be seen from FIG. 34, the downstream side of the portion provided in the adjusting operation member 103 of the upstream pipeline 1 has an oval cylindrical shape (the outer shape and the inner shape in the cross section are substantially elliptical), The side is formed to have a cylindrical shape.

As shown in FIG. 33, the adjusting operation member 103
The shape of the pipeline hole 106 provided therein corresponds to the shape of the pipeline 1 on the upstream side.

On the other side (downstream side) of the downstream rigid fixing section 101, a downstream pipe connecting section 107 is provided. The downstream pipe connecting section 107 has a downstream side connecting section. The upstream side of the pipeline 1 is connected in a liquid-tight manner.

The downstream hard fixing portion 101 is provided with a pointer 108, and the upstream hard rotating portion 100 is provided with a scale 109 corresponding to the pointer 108. The scale 109 is provided based on the opening / closing amount of the groove 10 of the second closing portion 3 corresponding to the rotational position of the upstream hard rotating portion 100. The pointer 108 to the desired scale 10
By adjusting to 9, the opening and closing amount of the groove 10 is adjusted to obtain a desired flow rate.

(Operation of Fourteenth Embodiment) The relationship between the upstream hard rotating part 100 of the adjusting operation member 103 and the pipelines 1 to the second closing part 3 is shown in FIG.
(B), FIGS. 30 (a) to (c), FIGS. 31 (a) to (c)
Alternatively, the relationship is the same as that described with reference to FIGS. 32A to 32C, and in the case of the rotation operation, the upstream-side hard rotating unit with respect to the downstream-side hard fixed unit 101 and the pipeline 1. 1
00 is rotated. A pressing force is applied to the second closing portion 3 via the pipe line 1 in accordance with the rotation operation amount of the upstream side hard rotating portion 100, and the groove portion 1 provided in the second closing portion 3 is provided.
The flow rate is adjusted by controlling the opening / closing amount of zero. For details, refer to the descriptions of the eleventh to thirteenth embodiments.

(Effect of Fourteenth Embodiment) In the flow controller 200 according to the fourteenth embodiment, during the rotation operation, the upstream hard rotating part is moved with respect to the downstream hard fixing part 101. 100 is rotated to adjust the flow rate, so that there is no deviation in the rotation axis during the rotation operation, and it is possible to always supply a stable flow rate of the drug solution or the like to the downstream side. The same effects as those of the first to thirteenth embodiments can be obtained. In the description of the fourteenth embodiment, the guide groove 1 is provided on the upstream hard rotating portion 100 side.
And a guide rib 1 on the downstream side rigid fixing portion 101 side.
05, but conversely, on the downstream side rigid fixing portion 1
Alternatively, a guide groove may be provided on the 01 side and a guide rib may be provided on the upstream hard rotating section 100 side.

Further, a scale may be provided on the downstream hard fixing portion 101 and a pointer may be provided on the upstream hard rotating portion 100.

The flow rate controller and the infusion / blood transfusion set of the present invention have been described based on the illustrated embodiments.
The present invention is not limited to these, and the configuration of each part configuring the flow rate regulator can be replaced with any configuration that can perform the same function.

In the present invention, the above-described predetermined configurations of the embodiments may be appropriately combined.

The use of the flow rate regulator of the present invention is not limited to the above-mentioned infusion and / or transfusion set for performing infusion and / or transfusion.

[0276]

As described above, according to the flow controller and the infusion / blood transfusion set of the present invention, the flow rate of a liquid (fluid) such as a drug solution or blood can be easily, quickly and reliably adjusted even by a non-expert. Can be done.

Further, a change in the flow rate over time is small or the change in the flow rate can be prevented.

[Brief description of the drawings]

FIG. 1 is a side view (partially longitudinal sectional view) showing a flow rate controller according to a first embodiment of the present invention.

FIG. 2 is a perspective view of first and second closing portions of the flow controller according to the first embodiment.

FIG. 3 is a cross-sectional view of the flow controller according to the first embodiment.

FIG. 4 is a side view of the flow controller according to the first embodiment.

FIG. 5 is a vertical sectional perspective view of the adjustment operation member.

FIG. 6 is a cross-sectional view of the flow controller according to the first embodiment with an adjustment operation member mounted.

FIG. 7 is a cross-sectional view (a plan view of a slit portion of a first closing portion) of the flow controller according to the first embodiment.

FIG. 8 is a view for explaining an open / close state of the slit.

FIG. 9 is a cross-sectional view showing a modified example of the flow controller of the first embodiment.

FIG. 10 is a side view and a plan view showing a modified example of the slit provided in the first closing portion of the flow controller according to the first embodiment.

FIG. 11 is a plan view and a cross-sectional view illustrating a slit portion provided in a first closing portion of a flow rate controller according to a second embodiment of the present invention.

FIG. 12 is a cross-sectional view showing a slit provided in a first closing portion of a flow controller according to a third embodiment of the present invention.

FIG. 13 is a cross-sectional view showing a modification of the slit provided in the first closing portion of the flow controller according to the third embodiment.

FIG. 14 is a plan view and a side view showing a slit portion provided in a first closing portion of a flow rate controller according to a fourth embodiment of the present invention.

FIG. 15 is a perspective view of a slit provided in a first closing portion of a flow controller according to a fifth embodiment of the present invention.

FIG. 16 is a longitudinal sectional view of a flow controller according to a sixth embodiment of the present invention.

FIG. 17 is a perspective view of a first closing portion and a second closing portion of the flow controller according to the sixth embodiment.

FIG. 18 is a perspective view of a part of an intermediate portion of a pipe of a flow controller according to the sixth embodiment.

FIG. 19 is a longitudinal sectional view of a flow rate controller according to a seventh embodiment of the present invention.

FIG. 20 is a perspective view of an adjusting operation member of the flow rate controller according to the eighth embodiment of the present invention.

FIG. 21 is a cross-sectional view of a flow controller according to the eighth embodiment.

FIG. 22 is a longitudinal sectional view of a flow rate controller according to the eighth embodiment.

FIG. 23 is a cross-sectional view of a flow controller according to a ninth embodiment of the present invention.

FIG. 24 is a longitudinal sectional view of a flow controller according to a tenth embodiment of the present invention.

FIG. 25 is a perspective view of an upstream end of an adjustment operation member of the flow rate controller according to the tenth embodiment.

FIG. 26 is a longitudinal sectional view of a modified example of the flow controller of the tenth embodiment.

FIG. 27 is a perspective view of a flow rate controller according to an eleventh embodiment of the present invention.

FIG. 28 is a longitudinal sectional view of the flow rate controller according to the eleventh embodiment.

FIG. 29 is a cross-sectional view of the flow controller of the eleventh embodiment.

FIG. 30 is a cross-sectional view of a flow controller according to a twelfth embodiment of the present invention.

FIG. 31 is a cross-sectional view of a flow regulator according to a thirteenth embodiment of the present invention.

FIG. 32 is a cross-sectional view of a modification of the flow regulator of the thirteenth embodiment.

FIG. 33 is a longitudinal sectional view of a flow rate controller according to a fourteenth embodiment of the present invention.

FIG. 34 is a perspective view of an upstream pipe of a flow regulator according to a fourteenth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pipeline 1a Upstream side part 1b Downstream side part 1c Intermediate part 2 First closing part 3 Second closing part 4 Adjusting operation member 5 Slit 6 First undulating part 7 Second undulating part 10 Groove part 12 Scale 13 Pointer 14 Winding part 15 Operation part 20 Rib 21 Rib 25 Groove part 26 Slit 31 Hole part 32 Hole part 35 Rib 36 Rib 37 First flow path 38 Second flow path 39 Rod 40 Flow path 41 Flow path 45 Slit 45a Upper tongue Part 45b Lower tongue part 46 Opening part 48 Slit 51 First flow path 52 Second flow path 53 Third flow path 54 Communication hole 60 First annular part 61 Second annular part 65 Pipe part 66 Stop part 67 Pipe 70 Adjustment operation member 71 Winding part 72 Operation part 73 Rib 74 Rib 75 Rib 76 Rib 80 Adjustment operation member 81 Insertion hole 82 Downstream end face part 83 Pointer 84 Scale 85 Guide rib 86 Guide groove 88 Rib 90 Insertion hole 93 Outer peripheral part 94 Outer peripheral part 97 Point of inner peripheral wall of adjustment operation member 99 Point of inner peripheral wall of adjustment operation member 100 Upstream hard rotating section 101 Downstream rigid fixing section 103 Adjusting operation member 104 Guide groove 105 Guide rib 106 Pipe hole 107 Downstream pipe connection 108 Pointer 109 Scale 110 Rib 120 Rib 121 Opening 122 Opening 130 Guide groove 131 Guide groove 132 Guide rib 133 Guide rib 141 Position 142 Position 151 point 152 Point 153 Point 154 Point 200 Flow controller

Claims (11)

[Claims] 1. A flow controller for adjusting a flow rate of a fluid, comprising: a flexible tube through which a fluid flows; a support provided to contact an inner surface of a lumen of the tube; and a lumen of the tube. 2 divided by the support
And a notch provided in a portion of the support that contacts the inner surface of the tube and / or a portion of the inner surface of the tube that contacts the support and communicates the spaces. The flow controller is characterized in that the part is configured to open and close by a change in the shape of the tube and / or the support. 2. The flow controller according to claim 1, wherein one cut portion is provided. 3. The flow controller according to claim 1, wherein the opening and closing amount of the notch is adjusted by applying pressure to the tube and / or the support. 4. The flow rate adjusting device according to claim 1, further comprising an opening / closing amount adjusting means for adjusting an opening / closing amount of the cut portion by applying a pressure to the tube and / or the support. vessel. 5. The opening / closing amount adjusting means is provided so as to be slidable along the axial direction of the tube, and applies a pressure corresponding to the sliding operation to the tube and / or the support to thereby make the cut. The flow controller according to claim 4, wherein the flow controller is configured to adjust an opening / closing amount of the unit. 6. The opening / closing amount adjusting means changes a position where a force acts on the tube and / or the support in a circumferential direction of the tube according to a sliding operation of the opening / closing amount adjusting means. The flow controller according to claim 5, wherein the flow controller is configured as follows. 7. The opening / closing amount adjusting means is provided rotatably along a circumferential direction of the tube, and applies a pressure corresponding to the rotation operation to the tube and / or the support to thereby perform the cut. The flow controller according to claim 4, wherein the flow controller is configured to adjust an opening / closing amount of the unit. 8. The opening / closing amount adjusting means has a cylindrical shape, and at least a part of an inner peripheral surface thereof is configured to apply a pressure corresponding to the rotation operation to the tube and / or the support. The flow controller according to claim 7, wherein 9. The internal shape of the opening / closing amount adjusting means in a cross section is such that the pressure applied to the tube and / or the support gradually increases or decreases within a range where the central angle exceeds 90 °. The flow controller according to claim 8, wherein 10. The opening / closing amount adjusting means is configured such that when viewed in a cross section of the tube, at least three points of the tube and / or
The flow controller according to any one of claims 4 to 9, wherein pressure is applied to the support. 11. An infusion / blood transfusion set comprising the flow regulator according to claim 1.