JP2002345974A - Three-way cock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a three-way cock which hardly clogs an elastic tube, and realizes the reduction of space and improvement in operability. SOLUTION: The three-way cock 1 is composed of a jacket body 2 having an inflow branch tube 5, an outflow branch tube 6 and a side branch tube 7. A sock body 3 is fitted into the jacket body 2 to be freely turned and has a plurality of channels 10 inside. The side branch tube 7 is arranged inclined in the arranging direction of the inflow branch tube 5, opening indexes 5a, 6a and 7a corresponding to the branch tubes 5, 6 and 7, respectively are provided around the jacket body 2, and a shield plate 12 is peripherally provided for invisibly shielding the opening indexes 5a, 6a and 7a of the sealed branch tubes 5, 6 and 7 at the turning positions of the cock body 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-way stopcock used mainly for performing blood transfusion or infusion in the medical field.

[0002]

2. Description of the Related Art A three-way stopcock used for performing blood transfusion, intravenous drip, and the like, particularly in the medical field, has been well known. This three-way stopcock has three branch pipes that protrude outward,
That is, the inflow branch pipe, the outflow branch pipe, and the side branch pipe are T
It comprises a mantle arranged in a letter shape and a stopcock body rotatably fitted inside the mantle body and having a T-shaped flow path therein. That is, the inflow branch pipe and the outflow branch pipe are disposed on the outer peripheral surface of the mantle so that they are opposed to each other in a straight line, and the side branch pipes are respectively connected to the inflow branch pipe and the outflow branch pipe.
It is arranged on the outer peripheral surface of the mantle with an angle of 0 °.
The three-way cock having such a configuration can supply the liquid medicine or the like supplied from the inflow branch pipe or the side branch pipe alternately or simultaneously to the outflow branch pipe by sequentially rotating the stopcock body by 90 degrees. .

In the case where the three-way cock is used for infusion, as shown in FIG. 6, a main route c for flowing a main drug a into a human body and a sub-drug b flow to the main route c. Drip route connecting the sub route d for the drip is conventionally proposed. The main route c connects the infusion body containing the main drug a, the inflow branch pipe and the outflow branch pipe of the three-way cock 1 ′, and the tubular elastic tube T1 for guiding the drug to a predetermined location, and moves the main drug a upward. The main drug a can be flowed into the human body by flowing down from the body. On the other hand, the sub-route d connects the drip body containing the sub-drug b, the side tube of the three-way cock 1 ', and the elastic tube T2 to allow the sub-drug b to flow into the main route c. It should be noted that a plurality of the sub route d can be connected to the main route c in accordance with the number of drops of the sub drug b to be administered. By configuring such an infusion route, the main drug a
And the auxiliary drug b can be administered to the human body in a required combination or liquid amount.

[0004]

In the conventional three-way cock 1 'described above, the side branch pipes are arranged perpendicularly to the arrangement directions of the inflow branch pipe and the outflow branch pipe. Therefore, the elastic tube T1 connected to the inflow branch pipe or the outflow branch pipe and the elastic tube T2 connected to the side branch pipe are formed to be separated from each other in three different directions. Therefore, the drip route using the three-way cock 1 'occupies a large space as a whole. The infusion route occupying such a large space restricts the space required for medical procedures such as medical examinations, and an accident may occur when a limb or the like is caught on the elastic tubes T1, T2. Furthermore, the number of patients that can be hospitalized in one room is also limited.

In order to avoid the above problem, the main route c
Means for bundling and integrating the elastic tube T1 and the elastic tube T2 of the auxiliary route d to save the space of the drip route has been proposed.
When the elastic tube T2 connected via the main tube c (see FIG. 9) is forced to approach the elastic tube T1 of the main route c,
There is a problem that the elastic tube T2 is bent at the end of the connecting part j and the elastic tube T2 is closed. Since the blockage of the elastic tube T2 interrupts the administration of the medicine, the elastic tube T2 is currently connected to each branch tube so as to have a margin and hang down slowly (FIG. 8).
reference). Therefore, the length of the elastic tube T2 tends to be excessively long, and accordingly, the drip route is complicatedly formed. The problem is that the relationship between the drug to be administered and each branch pipe of the three-way cock corresponding to the drug becomes unclear,
To make drug management difficult, healthcare workers will need a great deal of concentration. The mental stress of the medical staff associated therewith induces an operation error of the three-way stopcock, which eventually leads to a medical error.

SUMMARY OF THE INVENTION In order to solve such a problem, an object of the present invention is to provide a three-way cock that can prevent the elastic tube to be connected from being easily closed and realize space saving and improvement in operability.

[0007]

According to the present invention, there is provided an outer jacket having a first to third branch pipes protruding outward on an outer peripheral surface of a cylindrical portion having at least one open end; A stopcock body rotatably fitted into the cylindrical portion of the mantle body, comprising a column portion having a plurality of flow paths therein and a knob formed at the upper end of the column portion, In a three-way cock that allows predetermined branch pipes of the mantle to communicate with each other through the flow path of the stopcock body, the first and second branch pipes are arranged to face each other in a straight line, and the third branch pipe is provided. Is a three-way cock that is arranged to be inclined with respect to the arrangement direction of the first and second branch pipes.

As described above, since one branch pipe is arranged to be inclined with respect to the other branch pipe, the elastic tube connected to the branched pipe arranged to be inclined can be closed. It is possible to easily approach and bundle the elastic tube connected to another branch pipe without any need, and it is not necessary to lengthen the elastic tube excessively. This makes it possible to form a drip route without occupying a large space.

The first branch pipe is an inflow branch pipe, the second branch pipe is an outflow branch pipe, and the third branch pipe is a side branch pipe. 30 to 4 angles
By setting the angle to 5 degrees, the elastic tube connected to the inflow branch pipe and the elastic tube connected to the side branch pipe are located close to each other, so that they can easily be bundled without extra space. Can be organized. Therefore, no unreasonable external force acts on each elastic tube, and the elastic tube does not bend at the connecting portion, so that the elastic tube is not blocked and the drip route can be saved in space. Become.

Here, as shown in FIG. 7, in the conventional three-way cock 1 ', a communication index m indicating that a flow path is formed is provided on the upper surface of the cock in the branch pipe. The lock position indicating that the flow path was not formed was also provided on the upper surface of the stopcock body, which was provided corresponding to the installation direction,
In the case of the three-way cock provided with the branch pipe according to the present invention inclined, it is not possible to use the index of the conventional configuration in which the mutual ends are formed at an angle of 90 degrees as illustrated. Therefore, an open index corresponding to each branch pipe is provided around the mantle body, and an open index of the closed branch pipe at each rotation position of the stopcock is provided on the upper outer peripheral surface of the cylindrical portion of the stopcock. There can be proposed a three-way cock having a configuration in which a concealing plate that covers invisibly is provided. That is, a desired branch pipe becomes non-communicative by turning the stopcock body and shielding the opening index corresponding to the branch pipe to be disconnected with the shielding plate. With this configuration, it is possible to recognize at a glance the branch pipe in the current communication state. Therefore, the desired branch pipes can be easily and reliably communicated with each other or can be operated so as not to communicate with each other.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A three-way cock according to the present invention will be described with reference to the accompanying drawings. As shown in FIG. 1, the three-way cock 1 is composed of a mantle body 2 having a cylindrical portion 4 (see FIG. 1B) and a stopcock body 3 having a cylindrical portion 11 (see FIG. 1A). The cylindrical portion 4 and the cylindrical portion 11 are used by being rotatably fitted to each other.

Here, the mantle 2 and the stopcock 3 will be described in detail. As shown in FIG. 2A or FIG. 2B, the mantle 2 is formed on the outer peripheral surface of the cylindrical portion 4 having an open upper surface.
Three branch pipes (inflow branch pipe 5, outflow branch pipe 6, and side branch pipe 7) are provided so as to protrude outward. The inflow branch pipe 5 and the outflow branch pipe 6 are arranged in a straight line and opposed to each other.
It is arranged in a direction that forms an angle of 0 degrees. As the diameter, cross-sectional shape, and the like of each of the branch pipes 5, 6, and 7, a conventionally known branch pipe shape or the like is suitably used. Furthermore, the cylindrical part 4
Open indicators 5a, 6a, 7a corresponding to respective positions of the inflow branch pipe 5, the outflow branch pipe 6, and the side branch pipe 7 are formed on the upper surface, respectively. The main agent a flows from the inflow branch pipe 5 of the three-way cock 1, and the auxiliary agent b flows from the side branch pipe 7.
Flows in, and these drugs flow out of the outflow branch pipe 6.

The angle between the inflow branch pipe 5 and the side branch pipe 7 can be appropriately selected within the range of 30 to 45 degrees. In addition, the opening indices 5a, 6a, 7a
It may be formed on the upper surface of 6, 7 or another index form may be applied. The side branch pipe 7 has an operation index 1 described later.
6 are formed.

On the other hand, the stopcock 3 is shown in FIG.
As shown in FIG. 1, a cylindrical portion 11 having a plurality of flow paths 10 for making each branch pipe communicate with each other,
1 is provided with shielding plates 12a and 12b which are provided on the upper outer peripheral surface and are substantially opposed to each other, and a knob 13 provided on the shielding plate 12a. The diameter of the flow path 10 formed in the column 11 is preferably about 1/6 of the diameter of the column 11. Further, by appropriately rotating the stopcock 3 by the knob 13, the inflow branch pipe 5 of the mantle 2 is formed.
And the outflow branch pipe 6, the inflow branch pipe 5 and the side branch pipe 7,
The flow path 10 is formed so that the outflow branch pipe 6 and the side branch pipe 7 can communicate with each other. By rotating the stopcock 3 to a predetermined position, any of the branch pipes 5, 6,
7 can also be non-communicating.

Here, in this embodiment, FIG.
As shown in FIG. 2, a plurality of flow paths 10 are formed radially in five directions from the center of the columnar portion 11. This formation pattern penetrates the cylindrical portion 11 and has an angle of 40
The two flow paths 21 and 22 intersecting at the center of the cylindrical portion 11 and having an angle of 80 degrees with the flow path 22 and communicating with the flow paths 21 and 22 at the center of the cylindrical portion 11 respectively. Road 2
3 is comprised. The channel 23 does not penetrate the column 11.

The formation pattern of the flow path 10 is determined by the mantle 2
The branch pipes 5, 6, 7 can be appropriately changed in accordance with the arrangement angle direction of each other, and the respective branch pipes 5, 6, 7 can be connected or disconnected. As long as the formation pattern is such, another formation pattern can be applied as appropriate.

A plurality of concave locking portions 14 are engraved on the inner peripheral surface of the cylindrical portion 4 of the outer cover 2, while a convex locking portion 15 is formed on the outer peripheral surface of the cylindrical portion 11 of the cock 3. Are formed so that the desired branch pipes can communicate or not communicate with each other at the fitting position of the concave locking portion 14 and the convex locking portion 15.

Here, the specific operation of the three-way cock 1 which is a main part of the present invention will be described. As shown in FIG. 4 (a), all the open indicators 5a, 6a, 7a of the inflow branch pipe 5, the outflow branch pipe 6, and the side branch pipe 7 are shield plates 12a, 12b.
If it is visible without being blocked,
6 and 7 indicate that they are in communication with each other. In such a case, the flow path 10 of the stopcock 3 includes all the branch pipes 5 of the inflow branch pipe 5, the outflow branch pipe 6, and the side branch pipe 7.
It communicates with 6,7. Further, the engagement between the convex locking portion 15 of the stopcock 3 and the concave locking portion 14 of the mantle body 2 allows the user to recognize that the communication has been ensured, and
The stopcock body 3 is stably held at a position where the branch pipes 5, 6, and 7 reliably communicate with each other.

FIG. 4B shows a state in which the stopcock 3 has been rotated clockwise by 40 degrees with respect to the mantle 2 from the state shown in FIG. When the open indicators 6a and 7a of the side branch pipe 7 and the outflow branch pipe 6 can be visually recognized, it indicates that the side branch pipe 7 and the outflow branch pipe 6 are in communication. In such a case, the flow path 10 of the stopcock 3 communicates only with the side branch pipe 7 and the outflow branch pipe 6, and the inflow branch pipe 5 is in a non-communication state. Similarly to the state of FIG. 4A, the branch pipes 6, 7 are stably held at a position where the branch pipes 6, 7 are reliably communicated by the locking portions 14, 15 formed on the cock 3 and the mantle body 2. .

FIG. 4C shows a state in which the stopcock 3 is rotated counterclockwise by 40 degrees with respect to the mantle 2 from the state of FIG. When the opening indicators 5a and 6a of the inflow branch pipe 5 and the outflow branch pipe 6 are visible, it indicates that the inflow branch pipe 5 and the outflow branch pipe 6 are in communication. In such a case, the flow path 10 of the stopcock 3 communicates only with the inflow branch pipe 5 and the outflow branch pipe 6, and the side branch pipe 7 is in a non-communication state. Further, the branch pipes 5 and 6 are stably held at positions where the stop pipes 3 and 6 are reliably communicated by the locking portions 14 and 15 formed on the cock 3 and the mantle 2, respectively.

FIG. 4D shows a state where the stopcock 3 is rotated 140 degrees counterclockwise with respect to the mantle 2 from the state of FIG. When the opening indices 5a and 7a of the inflow branch pipe 5 and the side branch pipe 7 can be visually recognized, this indicates that the inflow branch pipe 5 and the side branch pipe 7 are in communication. In such a case, the flow path 10 of the stopcock 3 communicates only with the inflow branch pipe 5 and the side branch pipe 7, and the outflow branch pipe 6 is in a non-communication state. Further, the branch pipes 5 and 7 are stably held at a position where they are reliably communicated by the locking portions 14 and 15 formed on the cock 3 and the mantle 2.

FIG. 4E shows a state in which the stopcock 3 has been rotated clockwise by 80 degrees with respect to the mantle 2 from the state shown in FIG. In this way, when the opening indicators 5a, 6a, 7a of all the branch pipes 5, 6, 7 are shielded by the shielding plates 12a, 12b and cannot be visually recognized, the inflow branch pipe 5, the outflow branch pipe 6, and the side branch pipe 7 Indicate that they are not in communication. In such a case, the flow path 10 of the stopcock 3 is not in communication with any of the branch pipes 5, 6, 7. Further, similarly to the above-described operation mode, each of the branch pipes 5 and 5 is formed by the stoppers 14 and 15 formed on the cock 3 and the mantle 2.
6 and 7 are stably held in a non-communicating position, and the inflow of the drug is interrupted. In this embodiment, by operating the knob 13 so as to be positioned on the operation index 16 formed on the side branch pipe 7, all the branch pipes 5,
6 and 7 are not communicated.

In this embodiment, the shielding plates 12a,
The shielding plate 12b, the knob 13, and the above-described formation pattern of the flow path 10 are configured in the respective positional relations as shown in FIG. 3 (a). A use mode in which the inflow branch pipe 5 and the outflow branch pipe 6, which are frequently used, are communicated (see FIG. 4C), and a use mode in which the side branch pipe 7 communicates with the outflow branch pipe 6 (see FIG. 4B). ), Usage form in which all branch pipes are connected (Fig. 4 (a)
(See Fig. 4)
(See (e)) can be respectively selected with a small amount of rotation of the stopcock 3. Therefore, the three-way cock 1 with excellent operability can be obtained by adopting the structure of the cock 3 according to the present embodiment.

FIG. 5 shows a three-way cock 1 according to the present invention.
It shows the usage pattern of. The inflow branch pipe 5 of the three-way cock 1 according to the present invention has an elastic tube T1 of the main route c.
And the side branch pipe 7 is connected to the elastic tube T2 of the sub route d. Further, these elastic tubes T1, T2 are bundled by a converging part k. Also,
FIG. 8 shows a usage form of a conventional three-way cock 1 '. As described above, when the three-way cock 1 according to the present invention is used, even if the elastic tube T1 of the main route c and the elastic tube T2 of the sub route d are bundled and arranged, the end part of the connecting part j of the side branch pipe 7 is arranged. Thus, the elastic tube T2 is not bent and the elastic tube T2 is not closed. In addition, since it is not necessary to provide a configuration in which the elastic tube T2 has room as in the related art (see FIG. 8) in order to avoid the blockage of the elastic tube T2, the space saving of the drip route can be realized.

The stoppers 14 and 15 for securely and stably holding the stopcock 3 and the mantle 2 at desired positions are provided with a concave lock 14 on the stopcock 3 and a convex engagement with the mantle 2. The stopping portion 15 may be provided, or another known locking portion may be used. Also, the formation pattern of the flow path 10 and the shielding plates 12a, 12b
Can be appropriately changed. Further, the three-way cock 1 according to the present invention can be applied not only to the medical field but also to other fields.

[0026]

As described above, according to the present invention, since one branch pipe is arranged so as to be inclined with respect to the direction in which the other branch pipes are arranged, the present invention is applied to a case where the branch pipe is arranged with an inclination. Even in the case where the connected elastic tube is brought close to the elastic tube connected to the other nearest branch pipe, it is possible to prevent an unreasonable external force from acting on each elastic tube. Therefore, it is possible to prevent the elastic tube from being bent at the distal end of the branch tube, and the elastic tube is not blocked. Thereby, even when the three-way cock is caught under the patient's body when the sleeping patient turns over,
Interruption of drug administration due to blockage of the elastic tube may be reduced. Further, since the elastic tubes of the main route and the sub route are close to each other, the space of the drip route can be saved. This makes it possible to secure a sufficient space for medical practice and to avoid unnecessary intersection with a medical tube other than infusion, such as a stomach tube or a urinary catheter. . Therefore, it becomes an environment in which medical staff can easily perform medical treatment, and it is possible to provide high-quality treatment.

The first branch pipe is an inflow branch pipe, the second branch pipe is an outflow branch pipe, and the third branch pipe is a side branch pipe. 30 to 4 angles
By setting the angle to 5 degrees, the three-way cock is suitably used.

Further, a three-way cock having a configuration in which the branch pipe is arranged at an angle by providing a concealing plate for covering the opening indicator of the closed branch pipe invisibly around the outer jacket, The user can recognize the communicating branch pipe at a glance. Therefore, the desired branch pipes can be easily and reliably communicated with each other or can be operated in a non-communicable manner, and there is an excellent effect that medical errors due to erroneous operation or inappropriate operation can be avoided.

Further, the present invention does not change the number of parts as compared with the conventional three-way cock, and thus is excellent in terms of manufacturing cost.

[Brief description of the drawings]

FIG. 1 is a perspective view (a) of a stopcock constituting a three-way stopcock and a perspective view (b) of a mantle.

FIG. 2 is a plan view (a) and a side view (b) of the mantle.

FIG. 3 is a plan view (a) and a side view (b) of the stopcock.

FIG. 4 is an explanatory view showing an operation mode of a three-way cock.

FIG. 5 is a plan view of a three-way cock according to the present invention to which an elastic tube is connected.

FIG. 6 is a connection diagram of a drip route.

FIG. 7 is a plan view of a conventional three-way cock.

FIG. 8 is a plan view of a conventional three-way cock to which an elastic tube is connected.

FIG. 9 is a plan view of a conventional three-way stopcock to which an elastic tube is connected.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Three-way stopcock 2 Mantle 3 Stopcock 4 Cylindrical part 5 Inflow branch pipe 6 Outflow branch pipe 7 Side branch pipe 5a, 6a, 7a Opening index 10 Channel 11 Cylindrical part 12 Shielding plate 13 Knob

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4C066 AA09 BB01 CC01 JJ04 QQ14 QQ78 QQ79

Claims (3)

[Claims] An outer jacket is provided so that first to third branch pipes protrude outward from an outer peripheral surface of a cylindrical section having at least one open end, and pivots into the cylindrical section of the outer jacket. It is fitted freely and comprises a column having a plurality of flow paths therein, and a stopcock having a knob formed at the upper end of the column, and a stopcock provided with a flowpath of the stopcock. In a three-way cock that connects predetermined branch pipes of the mantle with each other, the first and second branch pipes are arranged to face each other in a straight line, and the third branch pipe is connected to the first and second branch pipes. A three-way cock according to claim 1, wherein said cock is inclined with respect to the direction in which the pipes are arranged. 2. The first branch pipe is an inflow branch pipe, the second branch pipe is an outflow branch pipe, and the third branch pipe is a side branch pipe. The stopcock according to claim 1, wherein the angle is 30 to 45 degrees. 3. An outer jacket is provided with an opening index corresponding to each branch pipe, and an upper outer peripheral surface of a cylindrical portion of the stopcock is provided on the outer peripheral surface.
The three-way cock according to claim 1 or 2, wherein a concealing plate is provided at each rotation position of the cock to cover an open indicator of the blocked branch pipe so as to be invisible.