JP2003235991A - Multi-turncock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a multi-turncock capable of easily and surely viewing the opened and closed states of ports. <P>SOLUTION: This three-way turncock (multi-turncock) 1 comprises a body 2 having a cylindrical part 3 with ports 4a, 4b, and 4c projectedly formed thereon toward the outside, a cock 5 having a body part 6 inserted into the cylindrical part 3, a disk-like base part 8, and a lever 9 extended from the base part 8, and a cover body 10. The three-way turncock 1 also comprises a display means 13 for displaying the opening/closing of the ports 4a to 4c distinctively by a variation in color. The display means 13 comprises a colored part 14 formed on the upper end face of the cylindrical part 3 of the body 2 and window parts (through-holes) 15a, 15b, and 15c formed at the base part 8 of the cock 5. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multiway stopcock used for switching channels.

[0002]

2. Description of the Related Art In the medical field, for example, a three-way stopcock (multi-way stopcock) is used for switching a flow path in a circuit when transfusing or transfusing a living body.

This three-way stopcock has a main body in which three ports are projectingly formed on the outer circumference of a cylindrical portion, a barrel portion rotatably inserted in the cylindrical portion, and a flow path corresponding to the port, and A cock having a lever for rotating the body is provided, and the opening / closing of each port is selected by rotating the cock.

Marks are formed on the cock at positions (three locations) corresponding to the ends of the flow passages formed on the body, and the mark is located among the three ports formed on the main body. The port in the open portion is judged to be the port in the open state, and the port without the mark is judged to be the port in the closed state.

However, since this mark is formed on the cock and configured to rotate and move together with the cock, there is a drawback that it is difficult to understand the open / closed state of each port. There is a problem that there is a risk of making a mistake.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a multiway stopcock which allows the open / closed state of each port to be visually checked easily and reliably.

[0007]

The above objects are achieved by the present invention described in (1) to (10) below.

(1) A main body in which a plurality of ports are formed on the outer circumference of a cylindrical portion, and the main body being rotatably inserted into the cylindrical portion,
A multiway stopcock which is configured with a cock having a body portion in which a flow path corresponding to the port is formed, and is a multiway stopcock that selects opening and closing of each port by rotating the cock, and the port being open. A multiway stopcock, comprising display means for displaying a closed port by distinguishing it by a color change.

(2) In the above (1), the display means is composed of a colored portion formed on the main body side and a window portion formed on the cock side and through which the colored portion is visible. Multi-way stopcock.

(3) The multiway cock according to (2), wherein the colored portion is formed at a portion corresponding to the port or a region including the portion.

(4) The multiway cock according to (2) or (3), wherein the colored portion is formed on one end surface of the cylindrical portion.

(5) The multiway cock according to (4), wherein the color of the colored portion is different from the color of the constituent material of the cylindrical portion.

(6) The color of the colored portion is different from the color around the window portion (2) to (5).
The multidirectional stopcock according to any one of 1.

(7) The coloring section is formed by coating, printing, dyeing, sticking an adhesive, fusing, or blending a coloring agent, according to any one of the above (2) to (6). Multi-way stopcock.

(8) The multiway cock according to any one of (2) to (7), wherein the window is formed at a position corresponding to the end of the flow path.

(9) The cock has a base portion formed on one end side of the body portion and a lever extending from the base portion, and the window portion is formed on the base portion. )
A multiway cock according to any one of (1) to (8).

(10) The multiway cock according to (9), wherein the base portion is plate-shaped, and the window portion is a through hole penetrating the base portion in a plate thickness direction thereof.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION The multi-way cock of the present invention will be described below in detail with reference to the preferred embodiments shown in the accompanying drawings.

FIG. 1 is a perspective view showing an embodiment of a multiway stopcock (three-way stopcock) of the present invention, and FIGS. 2 to 5 are plan views showing flow passage switching patterns in the multiway stopcock (three-way stopcock) of the present invention. It is a figure. In the following description, the upper side in FIG. 1 is “upper” or “upper end”, and the lower side in FIG. 1 is “lower”.
Or say "bottom".

As shown in FIG. 1, the three-way stopcock 1 of the present invention
Is composed of a main body 2, a cock 5, and a lid 10.

The main body 2 has a cylindrical portion 3 having a wall thickness of, for example, about 0.5 to 2.5 mm.
Ports 4a, 4b and 4c formed of three pipes (branch pipes) that project radially outward at an angle of ° are preferably formed integrally with the cylindrical portion 3. In this case, the flow paths 40a, 40b, 40c formed inside the ports 4a, 4b, 4c communicate with the inner cavity 31 of the cylindrical portion 3 at the same height position.

The inner diameters of the ports 4a to 4c are not particularly limited, but those having a diameter of about 1 to 5.5 mm are preferably used.

The inner diameter of the cylindrical portion 3 is not particularly limited, either.
For example, those having a thickness of about 3 to 12 mm are preferably used.

The cock 5 comprises a body 6, a base 8 and a lever 9. The body portion 6 has a cylindrical shape or a cylindrical shape (a cylindrical shape in FIG. 1), and is rotatably inserted (fitted) into the inner cavity 31 of the cylindrical portion 3 with airtightness or liquidtightness. Therefore, the outer diameter of the body portion 6 when the cock 5 is pulled out from the circular head portion 3 is the same as the cylindrical portion 3 described above.
It is preferable that the inner diameter is larger than the inner diameter by about 1 to 6%.

The outer peripheral surface 60 of the body portion 6 is made smooth and preferably has a surface roughness R _max of about 30 μm or less, more preferably about 8 μm or less.

Inside the body portion 6, flow paths (passages) 7a, 7b and 7c corresponding to the flow paths 40a, 40b and 40c of the ports 4a, 4b and 4c are formed in a T shape. That is, the three flow paths 7a, 7b and 7c that extend in the radial direction of the body 6 at an angle of 90 ° are formed so as to communicate with each other near the center of the body 6.

Further, these flow paths 7a to 7c are the flow paths 40a to 4c of the respective ports 4a to 4c when the cock 5 is fitted in the main body 2 (hereinafter, simply referred to as "cock fitted state").
It is formed at a height position corresponding to 0c.

Each of the flow paths 7a to 7c has an outer peripheral surface 60 of the body portion 6.
And circular openings 70a, 70b and 7 respectively.
0c is formed.

The diameter of each of the openings 70a to 70c is not particularly limited, but is preferably about 1 to 5 mm, more preferably about 2 to 3.5 mm.

The diameter of the openings 70a to 70c is
It is preferable that the inner diameters of the flow paths 7a to 7c are substantially equal to each other. Therefore, the larger the diameter of the openings 70a to 70c, the larger the flow rate can be secured.

The diameters of the openings 70a to 70c are preferably substantially equal to each other, but may be different from each other.

Further, the peripheral edge portions (outline) of the openings 70a to 70c may be chamfered in advance, and in this case, the effect of preventing damage to the peripheral edge portions or the vicinity thereof is further enhanced.

A disc-shaped base portion (lever support portion) 8 having an outer diameter larger than the outer diameter of the body portion 6 is preferably formed integrally with the body portion 6 on the upper portion of the body portion 6. This base 8
Is exposed above the cylindrical portion 3 in the cock fitted state.

A lever 9 is preferably formed integrally with the base 8 on the outer periphery of the base 8 so as to extend in the direction opposite to the flow path 7b and project. The lever 9 is gripped with fingers and torque is applied to rotate the cock 5. Therefore, lever 9
Concavities and convexities 91 for preventing slippage are formed on both side surfaces of the.

In the present invention, the lever 9 for performing the turning operation is not limited to one extending in one direction as shown in the drawing, but one extending in two or more directions or other handle. It may be anything.

Further, in the present embodiment, the cock 5 has a structure capable of freely rotating 360 degrees with respect to the main body 2, but the invention is not limited to this. That is, the three-way stopcock 1 may be provided with a regulation unit (not shown) that regulates the range of the rotation angle of the cock 5 with respect to the main body 2. The restricting means may be, for example, convex portions that are respectively formed on the upper portion of the cylindrical portion and the lower portion of the base portion 8 and that can be engaged with each other when the cock is fitted.

The lid (sealing member) 10 is a member having a projecting portion 101 in the center thereof, and is attached to the lower end of the cylindrical portion 3 of the main body 2 so as to seal the lower end of the inner cavity 31. .

In this case, the projecting portion 101 of the lid body 10 has the hole portion 61 formed at the lower end portion of the body portion 6 in the cock fitted state.
Be inserted or inserted into.

The constituent materials of the main body 2, the cock 5 and the lid 10 are not particularly limited, and examples thereof include polyolefin such as polyethylene, polypropylene and polybutadiene, acrylic resin such as polyurethane, polystyrene and polymethylmethacrylate, and polycarbonate. ,
Polyamide, polyester such as polyethylene terephthalate, various resin materials such as ABS resin, AS resin, fluorine resin such as ionomer, various thermoplastic elastomers such as polyurethane, polyester, polyamide, olefin and styrene, stainless steel, Various metal materials such as aluminum and titanium, various glass materials and the like can be mentioned, and these can be used alone or in any combination (for example, as a composite material).

The bending elastic modulus of the constituent material of the main body 2 is 900.
It is preferably about 0 to 33000 kgf / cm ² . This ensures sufficient strength. In addition, a transparent material can be used for the main body 2 in order to secure the internal visibility.

The cock 5, particularly the body portion 6 thereof, is preferably made of a material whose strength (rigidity) or hardness is equal to or less than that of the main body 2. As such a material, a thermoplastic elastomer is preferable, and a polyester elastomer is particularly preferable.

By using such a material for the body portion 6 of the cock 5, when the cock 5 is fitted into the main body 2 or when the cock 5 is rotated when the three-way stopcock is used, the body portion 6 due to misalignment, abrasion, etc. It is possible to suppress damage and loss of

Further, such a material is also excellent in biocompatibility, does not elute toxic substances, and even when used for blood transfusion,
There is also an advantage that the adhesion of thrombus is extremely small.

Now, such a three-way stopcock 1 has a port 4
The display means 13 is provided for distinguishing the opening / closing of a to 4c by changing the color.

The display means 13 is composed of a colored portion 14 formed on the upper end surface of the cylindrical portion 3 of the main body 2 and windows 15a, 15b and 15c formed on the base portion 8 of the cock 5.

As shown in FIG. 1, the upper end surface of the cylindrical portion 3 has a ring shape, and the colored portion (shown by hatching in each figure) 14 leaves a part of the upper end surface of the cylindrical portion 3. Is formed. That is, the colored portion 14 is formed on the upper end surface of the cylindrical portion 3 at a location corresponding to each of the ports 4a to 4c or an area including the location, and is not formed at a location having no port. A portion of the upper end surface of the cylindrical portion 3 where the colored portion 14 is not formed will be referred to as "non-colored portion 1" below.
6 ”.

Each of the windows 15a, 15b and 15c is formed of a through hole penetrating the base 8 in the plate thickness direction, and the color of the colored portion 14 is visually recognized through the windows 15a, 15b and 15c. can do.

The windows 15a, 15b and 15c are
They are formed at the ends of the flow paths 7a, 7b and 7c, that is, at the positions corresponding to the openings 70a, 70b and 70c, respectively.

The windows 15a to 15c are not limited to the through holes, but may be made of, for example, a transparent material (resin, glass, etc.).

Examples of the colored portion 14 include those formed by coating (coating) of a paint, printing, dyeing, sticking of a sticking material, fusion bonding, and the like. Further, it may be formed by mixing a colorant (dye, pigment, etc.) with a part of the constituent material of the cylindrical portion 3. Further, when the cylindrical portion 3 is manufactured, it may be integrally molded by a two-color molding method using a resin containing a colorant and a resin not containing a colorant.

The color of the colored portion 14 is not particularly limited, and examples thereof include various chromatic colors, achromatic colors, metallic colors, fluorescent colors and the like.

In the present invention, the colored portion 14 and the non-colored portion 16 may be chromatically distinguishable. In this case, normally, the non-colored portion 16 is the color of the constituent material of the cylindrical portion 3 itself, and the colored portion 14 has a different color (or brightness) from this, but conversely, the colored portion 14 may be the color of the material itself of the cylindrical portion 3, and the non-colored portion 16 may be a different color (or lightness). Further, both the colored portion 14 and the non-colored portion 16 may have a color different from the color of the constituent material of the cylindrical portion 3 itself.

The color of the colored portion 14 is preferably different from the color of the base portion 8 (or lightness), and in particular, there is a clear difference such that the colors are complementary colors. preferable. Thereby, the windows 15a to 15
When viewing the colored portion 14 through c, the window portions 15a to 15c
Since the color of the colored portion 14 visible inside and the color of the peripheral portions of the windows 15a to 15c are different, the distinguishability is further improved.

Similarly, for the purpose of improving the distinguishability, it is preferable that the color of the non-colored portion 16 is the same or similar to the color of the base portion 8. As a result, the color of the non-colored portion 16 appearing in the windows 15a to 15c becomes the same as or near the color of the peripheral portion of the windows 15a to 15c, and the colored portion 14 is relatively colored.
This is because the visibility of the part where the color is visible is improved.

Here, as an example of the color combination of the colored portion 14, the non-colored portion 16 and the base portion 8 (the peripheral portions of the windows 15a to 15c), when the colored portion 14 is a bluish color, When the colored portion 16 and the base portion 8 are colored in red or white and the colored portion 14 is colored in red, the non-colored portion 1
6 and the base portion 8 may have a bluish or whiteish color.

Next, the operation of the three-way stopcock 1 of the present invention will be described with reference to FIG.
-It demonstrates, referring FIG. [1] As shown in FIG. 2, when the lever 9 of the cock 5 is positioned in the same direction as the port 4a, the flow passage 40b of the port 4b and the flow passage 40c of the port 4c are connected to the body of the cock 5. Through the flow paths 7a and 7b formed in 6,
The flow passage 40a of the port 4a is sealed by the outer peripheral surface 60 of the body portion 6. As a result, the port 4b and the port 4c are opened and the port 4a is closed.

At this time, in the display means 13, the window portions 15a and 15b overlap the colored portion 14, and the window portion 15c.
Overlap with the non-colored portion 16. Thereby, it is possible to visually recognize the color of the colored portion 14 through the windows 15a and 15b and to understand that the ports 4b and 4c of the three ports 4a to 4c are in the open state.

[2] As shown in FIG. 3, when the position of the lever 9 of the cock 5 is in the same direction as the port 4b, the flow passage 40a of the port 4a and the flow passage 40c of the port 4c are
The flow passages 7a and 7c formed in the body portion 6 of the cock 5 communicate with each other, and the flow passage 40b of the port 4b is sealed by the outer peripheral surface 60 of the body portion 6. As a result, the port 4a and the port 4c are opened and the port 4b is closed.

At this time, in the display means 13, the window portions 15a and 15c overlap the colored portion 14, and the window portion 15b.
Overlap with the non-colored portion 16. Thereby, it is possible to visually recognize the color of the colored portion 14 through the windows 15a and 15c and to understand that the ports 4a and 4c of the three ports 4a to 4c are in the open state.

[3] As shown in FIG. 4, when the lever 9 of the cock 5 is positioned in the same direction as the port 4c, the flow passage 40a of the port 4a and the flow passage 40b of the port 4b are
The flow passages 7b and 7c formed in the body portion 6 of the cock 5 communicate with each other, and the flow passage 40c of the port 4c is sealed by the outer peripheral surface 60 of the body portion 6. As a result, the ports 4a and 4b are opened and the port 4c is closed.

At this time, in the display means 13, the window portions 15b and 15c overlap the colored portion 14, respectively, and the window portion 15a
Overlap with the non-colored portion 16. Thereby, the color of the colored portion 14 can be visually recognized from the windows 15b and 15c, and it can be understood that the port 4a and the port 4b of the three ports 4a to 4c are open.

[4] As shown in FIG. 5, when the position of the lever 9 of the cock 5 is opposite to the port 4b by 180 °, the flow passage 40a of the port 4a and the flow passage 4 of the port 4b are formed.
0b and the flow path 40c of the port 4c, the body portion 6 of the cock 5
The flow paths 7a, 7b, and 7c formed in the above communicate with each other. As a result, all the ports 4a to 4c are in the open state.

At this time, the display means 13 has the window 15a,
15b and 15c overlap the colored portion 14, respectively. Thereby, it is possible to visually recognize the color of the colored portion 14 through the windows 15a to 15c and to know that all the three ports 4a to 4c are in the open state.

As described above, since the turning operation of the cock 5 is performed while visually recognizing the color of the colored portion 14 seen from the windows 15a to 15c, the erroneous operation is prevented.

The multi-way cock of the present invention has been described above with reference to the illustrated embodiment, but the present invention is not limited to this, and each part constituting the multi-way cock may be any one having the same function. It can be replaced and any constituent may be added.

In particular, the structure of the display means may be arbitrary, and for example, the color chips may be projected or retracted depending on the rotational position of the cock with respect to the main body.

Further, in the present invention, the number of ports formed in the main body 2 is not limited to three and may be two or four or more.

[0068]

As described above, according to the present invention, the opened port and the closed port can be visually recognized by distinguishing them by the color change, so that the open / closed state of each port can be easily performed. And it can be surely grasped. As a result, erroneous operation of switching the flow paths can be prevented, and safety is improved.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a multiway cock according to the present invention.

FIG. 2 is a plan view showing a flow path switching pattern in the multiway cock of the present invention.

FIG. 3 is a plan view showing a flow path switching pattern in the multiway cock of the present invention.

FIG. 4 is a plan view showing a flow path switching pattern in the multiway cock of the present invention.

FIG. 5 is a plan view showing a flow path switching pattern in the multiway cock of the present invention.

[Explanation of symbols]

1 Three-way stopcock 2 body 3 Cylindrical part 31 Lumen 4a port 4b port 4c port 40a channel 40b channel 40c channel 5 cooks 6 torso 60 outer peripheral surface 61 hole 7a channel 7b channel 7c channel 70a opening 70b opening 70c opening 8 base 9 lever 91 unevenness 10 Lid 101 protrusion 13 Display means 14 Coloring part 15a Window (through hole) 15b Window (through hole) 15c Window (through hole) 16 Non-colored part

Claims (10)

[Claims] 1. A main body having a plurality of ports formed on the outer periphery of a cylindrical portion, and a cock having a body portion rotatably inserted in the cylindrical portion and having a flow path corresponding to the ports formed therein. A multi-way stopcock for selecting opening / closing of each of the ports by rotating the cock, and comprising display means for distinguishing between the open port and the closed port by changing the color. A multi-way stopcock characterized by that. 2. The multi-directional device according to claim 1, wherein the display means is composed of a colored portion formed on the main body side and a window portion formed on the cock side and through which the colored portion can be visually recognized. Stopcock. 3. The colored portion is formed at a portion corresponding to the port or a region including the portion.
Multidirectional stopcock described in. 4. The multiway cock according to claim 2, wherein the colored portion is formed on one end surface of the cylindrical portion. 5. The multiway cock according to claim 4, wherein the color of the colored portion is different from the color of the constituent material of the cylindrical portion. 6. The multiway cock according to claim 2, wherein the color of the colored portion is different from the color around the window portion. 7. The multiway cock according to any one of claims 2 to 6, wherein the colored portion is formed by coating, printing, dyeing, sticking an adhesive patch, fusing, or blending a colorant. 8. The multiway cock according to claim 2, wherein the window is formed at a position corresponding to an end of the flow path. 9. The cock has a base formed on one end side of the body and a lever extending from the base, and the window is formed on the base. 8
The multidirectional stopcock according to any one of 1. 10. The multiway cock according to claim 9, wherein the base portion is plate-shaped, and the window portion is formed of a through hole that penetrates the base portion in a plate thickness direction thereof.