KR20210123848A - Medical multi way stop cock - Google Patents

Abstract

The present invention relates to a medical multi-way stopcock. Provided is a medical multi-way stopcock comprising a main body part which comprises a cylindrical cylinder part in an open container shape, and a plurality of branched tubes radially formed on an outer side thereof; and a cock handle which has a cylindrical coupling part inserted into the cylinder part to be able to rotate, and rotates, wherein a flow path groove forms an internal flow path for connecting flow paths of the branched tubes selected by rotation of the cock handle, and a stop part is formed to block the flow paths of the branched tubes between both ends of the flow path groove. According to the present invention, generation of foreign materials such as burr in the process of manufacturing the cock handle can be prevented.

Description

Medical multi-way stopcock {MEDICAL MULTI WAY STOP COCK}

The present invention relates to a multi-way stopcock for medical use, and more particularly, to a multi-way stopcock for medical use capable of preventing the generation of a foreign substance (burr) generated during molding of an inner flow path.

In general, a medical multi-way stopcock is one of the medical instruments used in hospitals, etc. to supply various liquids including infusions to patients.

A medical multi-way stopcock is, in general, a branch pipe consisting of two inlet pipes and one outlet pipe into which a plurality of drug solutions can be selectively injected in order to provide a plurality of drug solutions (infusion, injection drug, molding agent, etc.) to a patient. includes

In the conventional case, in order to provide a plurality of drug solutions to a patient at the same time, it is common to insert a plurality of injection needles into each body part of the patient, or insert an injection needle into an infusion container of an infusion set and fix it with a tape.

However, due to the use of such a multi-way stopcock, different medicinal solutions to be provided to the patient are supplied together with the fluid through the branch pipe of the stopcock, so it is possible to alleviate the pain of the patient as well as a guardian or nurse while the fluid is injected. It has become more convenient to manage whether or not the patient is infused with fluid.

A known medical multi-way stopcock includes a body having an open container-shaped cylindrical cylinder portion, three branch pipes formed on an outer circumferential surface of the cylindrical cylinder portion, and a cock handle press-fitted to the cylindrical cylinder portion of the main body. Two of the branch pipes are input pipes and the other one is an outlet pipe. The branch pipes are formed in an arrangement in which two branch pipes adjacent to each other are orthogonal to each other. The body of the cock handle inserted into the cylinder part, that is, the cylindrical coupling part, includes a flow path hole passing from one side to the other side and an orthogonal flow path hole formed to be connected in a direction perpendicular to the flow path hole. According to the rotation of the cock handle, each branch pipe, the flow hole and the orthogonal flow hole are selectively connected, and the injection or blocking of the chemical solution through the multi-way stopcock is controlled.

This multi-way stopcock is injection-molded using a plastic material. During the injection molding process of the cock handle, a pin slide process must be used to form a flow hole. However, in the pin slide process, there is a problem in that a burr is generated on the outer peripheral surface of the body of the cock handle through which the pin is to be slidably discharged.

When assembling the multi-way stopcock, the cock handle is press-fitted into the cylinder part of the body, and the cock handle must be turned to connect and change the flow path. In this process, the burr generated during molding is separated. The separated bur may be mixed with the drug solution and injected into the patient's blood when the drug solution is injected, which may cause serious damage to the patient's health.

In order to solve this problem, in the conventional multi-way stopcock manufacturing process, the cock handle in which the burr is generated through the inspection process is separated and discarded one by one. However, since the multi-way stopcock is a small part, additional time and cost are incurred in checking whether burrs are generated one by one.

In addition, since the proportion of the cock handle in which burrs are generated is considerable due to the characteristics of the pin slide process, it causes an increase in cost and a decrease in productivity due to disposal.

Republic of Korea Patent Publication No. 2019-0125568 (20190.11.07)

The present invention has been devised to solve the above problems, and an object of the present invention is to provide a cock handle having an internal flow path capable of preventing the generation of foreign substances such as burrs when manufacturing the cock handle. To provide a medical multi-way stopcock.

An object of the present invention is to provide a medical multi-way stopcock that can be manufactured without using a pin slide method that causes burrs when manufacturing a cock handle.

It is an object of the present invention to provide a multi-way stopcock having a cock handle having an internal flow path capable of distributing a flow pressure of a chemical solution.

In order to achieve the above object, the present invention includes: a cylindrical cylinder part in the form of an open container; and a cock handle which is rotatably operated by having a cylindrical coupling part inserted into the cylinder part and rotatably coupled. Provided is a multi-way stopcock for medical use in which a flow path groove is formed, and a stop portion capable of blocking the flow path of a branch pipe is formed between both ends of the flow path groove.

According to an embodiment of the present invention, the flow path groove is formed as a round arc-shaped flow path groove which surrounds the central axis of the cock handle and is formed in the circumferential direction. Accordingly, the supply pressure of the chemical solution may be distributed while the supplied chemical solution is rotated along the circumference of the central axis portion.

According to an embodiment of the present invention, each knob corresponding to each branch pipe formed in the main body is provided on one side of the cylindrical coupling part of the cock handle located outside the cylinder part, and the branch pipe includes one discharge pipe and the discharge pipe a first input pipe positioned opposite to the second input pipe, and a second input pipe positioned between the discharge pipe and the first input pipe, wherein the arc-shaped flow path groove is the second input pipe at a position corresponding to the first input pipe It extends in one direction to a position corresponding to the discharge pipe through a position corresponding to the input pipe.

According to an embodiment of the present invention, the internal flow path may be formed at an angle of 220 degrees to 270 degrees with respect to the central axis of the coupling part.

According to the medical multi-way stopcock according to the present invention having the configuration as described above, the cock handle has an internal flow path made of an arc-shaped flow path groove, and thus it is possible to manufacture without using the conventional pin slide method, There is an effect of preventing the occurrence of foreign substances such as burrs when manufacturing the handle. As a result, it is possible to achieve a reduction in production cost and an improvement in productivity.

In addition, according to the present invention, since the cock handle has a round-shaped internal flow path capable of distributing the flow pressure of the chemical solution, it is possible to prevent pain or discomfort to the patient that may occur due to the chemical solution injected with a strong pressure. there is

1 is an exploded perspective view showing a medical multi-way stopcock according to the present invention.
2 to 4 are operational diagrams of the medical multi-way stopcock according to the present invention.

Since the present invention may have various changes and may have various forms, embodiments will be described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention. In describing each figure, like reference numerals have been used for like elements.

The above terms are used only for the purpose of distinguishing one component from another. The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view illustrating a multi-way stopcock for medical use according to the present invention, and FIGS. 2 to 4 are operational views of a multi-way stopcock for medical use according to the present invention.

As shown in FIG. 1 , the medical multi-way stopcock according to the present invention includes a body portion 100 and a cock handle 200 .

The main body 100 is a cylindrical cylinder part 110 in the form of a container with one side open in the center is formed with a constant diameter and height.

In addition, the main body 100, while maintaining a certain angle with each other radially on the outer surface of the cylinder part 110, each end communicates with the cylinder part 110, and a flow path 120a through which the chemical liquid can pass therein. ) includes a plurality of branch pipes 120 are formed. The plurality of branch pipes 120 are formed to protrude to the outside of the cylinder part 110 by a predetermined length.

The branch pipe 120 includes two input pipes 121 and 122 , that is, first and second input pipes 121 and 122 and one discharge pipe 123 . The branch pipes 120 adjacent to each other, that is, the first input pipe 121 and the second input pipe 122 , the second input pipe 122 and the discharge pipe 123 may be disposed at an angle perpendicular to each other. The first branch pipe 121 and the discharge pipe 123 are disposed to face each other, and the second branch pipe 122 is a first branch pipe between any one side between both sides of the first branch pipe 121 and the discharge pipe 123 . 121 and the discharge pipe 123 may be disposed orthogonally to each. In this case, the discharge pipe 123 may be formed to have a relatively longer length than the first and second input pipes 121 and 122 to be easily identified.

In the case of a conventional cock handle manufactured by a pin slide method, it is possible only to arrange each branch pipe orthogonal to each other due to the shape of the internal flow path, but according to the present invention, the present invention is not limited thereto. However, in terms of standardization and standardization of medical instruments, they are generally disposed to be orthogonal to each other.

The cock handle 200 includes a cylindrical engaging portion 210 coupled into the opening of the cylindrical portion 110 of the body 100 .

The cylindrical coupling part 210 of the cock handle 200 is fitted into the opening of the cylinder part 110 of the body part 100 , and the flow path of the plurality of branch pipes 120 radially disposed in the cylinder part 110 . (120a) is rotatably coupled to perform an opening and closing function to communicate or block each other.

In addition, the coupling part 210 has a plurality of knobs (the same number as the number of the plurality of branch pipes 120 on one side, that is, on the side positioned outside the cylinder part 110 in a state of being fitted to the cylinder part 110 ). 220) is formed to protrude outward.

The protrusion direction of each knob 220 is related to the connection direction between the internal flow path 215 of the cylindrical coupling part 210 and each branch pipe 210 . That is, when the coupling part 210 is rotated so that the direction of any one knob 220 and the direction of any one branch pipe 210 coincide, the internal flow path of the corresponding branch pipe 210 and the coupling part 210 is connected to each other Through this, it is possible to easily identify the flow direction and flow of the chemical solution. However, in order for the chemical to flow, at least one of the input pipes 121 and 122 and the discharge pipe 123 must be connected through an internal flow path, so the direction of any one knob 220 and the direction of any one branch pipe 210 are Just because the direction is the same does not mean that the chemical can flow.

A direction identification mark (not shown) in the form of an arrow may be formed on the surface of the knob 220 . The direction identification mark helps to more accurately match the connection of the branch pipe 210 with the internal flow path in the shape of the flow path groove 215 of the coupling part 210 .

That is, when the direction identification mark formed on the knob 220 matches the branch pipe 210 , the branch pipe 210 and the flow path groove 215 of the coupling part 210 can be accurately connected. The direction identification mark is provided so that the user can accurately adjust the connection relationship between the branch pipe 210 and the internal flow path of the coupling part 210 regardless of the shape size of the knob 220, and the branch pipe (with only the knob 220) If the connection relationship between the 210 and the internal flow path of the coupling part 210 can be accurately recognized, it may be omitted. In addition, when the direction identification display is displayed so that the user can clearly recognize it, there is no need to limit the part for manipulating the cock handle 200 to the shape of the knob 220 . However, since the multi-way stopcock is a medical instrument, safety is the most important, so it is recommended that the knob 220 and the direction change indicator be used at the same time.

Since the branch pipe 120 matched with the direction identification mark of the knob 220 maintains a communication relationship with the internal flow path of the coupling part 210 , which branch pipe 120 is selected according to the rotation operation of the cock handle 200 . As the chemical solution supplied through the flow flows into the internal flow path, the chemical solution is supplied to the other branch pipe 120 , that is, the discharge pipe 123 .

The user can visually check the direction identification mark displayed on the upper surface of the cock handle 200 , identify whether each branch pipe 120 and the internal flow path 215 are opened or closed, as well as control whether to open or close.

A flow path groove 215 that can communicate with the flow path 120a of the branch pipe 120 is formed in the cylindrical coupling part 210 of the cock handle 200 in a state coupled to the cylinder part 110 of the main body 100 . do.

The flow path groove 215 surrounds the central shaft portion 211 of the coupling part 210 and is formed as an arc-shaped flow path groove extending in a circular arc direction. Between both ends of the flow path groove 215 , that is, the body of the coupling part 210 in which the flow path groove 215 is not formed becomes the stop part 216 .

The channel groove 215 may extend at an angle of approximately 210 to 270 degrees, but the angle is not limited thereto. The flow path groove 215 may connect the flow paths 120a of the two branch pipes facing each other, that is, the flow paths 120a of the first input pipe 121 and the discharge pipe 123, and the flow paths of the branch pipe 120 that are not selected. 120a) is possible as long as it has a length that can form a stop portion 216 that can block. The flow path groove 215 extends to one side along the periphery of the central axis portion 211 so that the flow paths of the branch pipe 120 at positions opposite to each other, for example, the first supply pipe 121 and the discharge pipe 123 can be connected, It extends in one direction through a position corresponding to the second supply pipe 123 . Accordingly, an internal flow path connecting between the flow paths 120a of the branch pipes 120 is formed in the cylinder part 110 of the arc-shaped flow path groove 215 .

The connection relationship of the branch pipes 120 will be described with reference to the operation diagram of the medical multi-way stopcock according to the present invention shown in FIGS. 2 to 4 .

Referring to FIG. 2 , the direction identification marks of the two knobs 220 are positioned to match on the straight flow passages of the first input pipe 121 and the discharge pipe 123 among the branch pipes 120 , and the other knob 220 . ) is located in the direction opposite to the second input pipe 122 and shows a state in which the flow path 120a of the second input pipe 122 is blocked by the stop part 126 . In this case, the first input pipe 121 and the discharge pipe 123 positioned on a straight line are in communication with the flow path groove 215 of the coupling part 210, and the flow path ( 120a) is closed by the stop portion 126 . When the chemical solution is supplied to the first inlet pipe 121 having a mutual communication structure, the pressure is dispersed while the chemical solution is rotated along the flow path groove 215 and discharged through the discharge pipe 123, so that the drug solution can be administered to the patient. do.

Referring to FIG. 3 , the direction identification marks of the two knobs 220 are positioned to match on each flow path 120a of the first and second input pipes 121 and 122 and the discharge pipe 123 among the branch pipes 120 . will show In this case, the first and second input pipes 121 and 122 and the discharge pipe 123 are connected in all three directions by the channel groove 215 of the coupling part 210 . When the chemical solution is supplied to the first inlet pipe 121 and the second inlet pipe 122 having a mutual communication structure, the pressure is dispersed and discharged through the discharge pipe 123 while the chemical solution is rotated along the internal flow path, so that the drug solution is given to the patient. administration can be administered.

In the state of FIG. 3 , only the first input pipe 121 and the discharge pipe 123 are in communication with each other by the flow path groove 215 of the coupling part 210 , and the chemical solution is injected only through the first input pipe 121 . During the process, it is used when additional chemical input is required through the second input pipe 122 . In the state that the flow path 120a of the discharge pipe 123 is matched with the stop part 126 by rotating the knob 220 and blocked, another injection is connected to the second inlet pipe 122 to supply another chemical solution, and the knob By rotating 220, all three directions of the first and second input pipes 121 and 122 and the discharge pipe 123 communicate with each other to form a structure, and the chemical solution syringe is pressed to supply an additional chemical solution through the second input pipe 122. Through this, it is possible to administer a plurality of drug solutions to the patient.

Referring to FIG. 4 , the direction identification marks of the two knobs 220 are positioned to match on each flow path 120a of the second input pipe 122 and the discharge pipe 123 of the branch pipe 120 , and the other The knob 220 is positioned in a direction opposite to the second input pipe 122 , and the flow path 120a of the first input pipe 121 is blocked by the stop part 126 . In this case, when the second input pipe 122 and the discharge pipe 123 are in communication with the internal flow path of the coupling part 210 , and the chemical solution is supplied to the second input pipe 122 having a mutual communication structure , because the pressure is dispersed and discharged through the discharge pipe 123 as the chemical solution turns along the internal flow path, it is possible to administer the chemical solution to the patient. It can be used when stopping the injection of the chemical solution through the first injection pipe 121 and injecting an additional chemical solution through the second injection pipe 122 .

The user visually checks the direction identification mark displayed on the top surface of the knob 220 and the knob 220 at the top of the cock handle 200 and identifies whether each branch pipe 120 and the internal flow path 215 are opened or closed. It is possible to control whether to open or close.

Meanwhile, a sealing cap 125 for sealing the branch pipe 120 that is not in use may be coupled to the ends of the first and second input pipes 121 and 122 of the main body 100 . The sealing cap 125 is used to block the inflow of contaminants and the like through the unused input pipes 121 and 122 .

As described above, in the multi-way stopcock for medical use according to the present invention, a plurality of branch pipes 120 of the main body 100 according to the rotation of the cock handle 200 along the main surface of the cylindrical coupling part 210 of the cock handle 200 . A stop portion 216 that forms an arc-shaped flow path groove 215 that can connect is formed Accordingly, the internal flow path defined by the flow path groove 215 formed in the cylindrical coupling part 210 according to the rotation of the cock handle 200 coincides with the flow path 120a of each branch pipe 120, so that different branch pipes ( 120) is formed to communicate with each other. If the flow path groove 215 does not communicate in a form corresponding to the flow path 120a of each branch pipe 120, the connection between the flow paths 120a of each branch pipe 120 is blocked, so that the chemical solution can be supplied. there will be no

In the multi-way stopcock for medical use according to the present invention, the inlet pipes 121 and 122 are branch pipes 120 used to provide a drug solution necessary for the patient, and the discharge pipe 123 serves to voyage the supplied drug solution through blood vessels. It is a branch pipe 120 that does.

According to the embodiment of the present invention, when the cylindrical coupling part 210 of the cock handle 200 is fitted inside the cylinder part 110, the cylinder part 110 and the cock handle 200 are easily connected to each other. In order not to be separated, the fixing part 250 is formed.

The fixing part 250 includes a first fixing part 251 formed on an inner surface of the cylinder part 110 in the opening direction and a second fixing part 251 formed on an outer peripheral surface of the coupling part 210 of the cock handle 200 in the knob direction. and a fixing part 252 . The first fixing part 251 may be an annular locking groove, and the second fixing part 252 may be an annular locking jaw. Conversely, the first fixing part 251 is an annular locking jaw and the second fixing part 252 It may be an annular locking groove. The first fixing part 251 and the second fixing part 252 interact to support the cock handle 200 without being separated from the main body 100 so as to be able to rotate. In addition, the fixing part 250 functions as a sealing part to prevent the leakage of the chemical and the inflow of external foreign substances.

As shown in FIGS. 2 to 4 , the arc-shaped flow path groove 215 provides a flow path in a round and round shape, so that the flow pressure of the chemical can be dispersed.

Specifically, the input pipe of the conventional branch pipe has a shape arranged in a straight line. Among the supplied chemical, when supplying a high-viscosity chemical, such as a molding agent, at a high pressure for smooth supply, it is directly inside the body. Although the patient suffers or feels discomfort by the injected supply pressure, in the embodiment of the present invention, the chemical solution supplied through the flow path 120a of the branch pipe 120 is the flow path groove 215 of the coupling part 210 . Since the drug is rotated along a longer flow path of a round type instead of a conventional straight flow path, the supply pressure of the drug solution can be buffered and dispersed. Therefore, it is possible to alleviate the discomfort and pain that the patient feels when injecting the molding agent or the like in the prior art.

In addition, in the case of a conventional multi-way stopcock for medical use, the flow hole and the orthogonal flow hole are connected while being orthogonal to each other. . If the flow resistance is large, bubbles may be generated in the fluid, and when these bubbles are injected into the body, they cause pain to the patient. However, according to the present invention, since all of the chemical solution supplied through the first input pipe 121 and the second input pipe 122 is discharged to the discharge pipe 123 while swirling along the arc-shaped flow path groove 215, Flow resistance can be minimized, and thus the possibility of bubble generation can be greatly reduced.

The cock handle 200 is manufactured by injection molding using a plastic material. Conventionally, in the process of injection molding the cock handle 200, as the flow hole is formed through the pin slide method, the probability of occurrence of burrs is high. However, as in the present invention, the arc-shaped flow path groove 125, Since it is possible to produce without the pin slide method, it is possible to fundamentally prevent the occurrence of burrs. In addition, according to the multi-way stopcock for medical use according to the present invention, a round-shaped internal flow path capable of distributing the flow pressure of the chemical to the cock handle 200 is secured, so the patient's It can prevent pain or discomfort.

The above description of the present invention is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the following claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention.

100: body part 110: cylinder part
120: branch pipe 200: cock handle
210: coupling portion 211: central shaft portion
215: euro home 220: knob
250: fixed part

Claims (4)

a cylindrical cylinder part in the form of an open container, and a body part in which a plurality of branch pipes are radially formed on an outer surface of the cylinder part; and
and a cock handle which is rotated by including a cylindrical coupling part inserted into the cylinder part and rotatably coupled,
A flow path groove forming an internal flow path connecting the flow paths of the branch pipes selected according to the rotation of the cock handle is formed on the main surface of the cylindrical coupling part, and a stop portion capable of blocking the flow path of the branch pipe is formed between both ends of the flow path groove. Medical multi-way stopcock, characterized in that.
According to claim 1,
The flow path groove is formed as a round arc-shaped flow path groove that surrounds the central shaft portion of the cock handle and is formed in a circumferential direction so that the supply pressure of the chemical solution can be distributed while the supplied chemical solution turns along the circumference of the central shaft portion. Medical multi-way stopcock featuring.
3. The method of claim 2,
Each knob corresponding to each branch pipe formed in the main body is provided on one side of the cylindrical coupling part of the cock handle located outside the cylinder part,
The branch pipe includes one discharge pipe and a first input pipe positioned on the opposite side of the discharge pipe, and a second input pipe positioned between the discharge pipe and the first input pipe,
The arc-shaped flow path groove is a medical multi-way stopcock, characterized in that it extends in one direction from a position corresponding to the first input tube through a position corresponding to the second input tube to a position corresponding to the discharge tube.
4. The method of claim 3,
The internal flow path is a medical multi-way stopcock, characterized in that formed at an angle of 220 degrees to 270 degrees around the central axis of the coupling part.

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