WO2013105799A1

WO2013105799A1 - 3-way stopcock for medical treatment

Info

Publication number: WO2013105799A1
Application number: PCT/KR2013/000211
Authority: WO
Inventors: 이영희
Original assignee: 이강메디칼(주)
Priority date: 2012-01-10
Filing date: 2013-01-10
Publication date: 2013-07-18
Also published as: KR101177279B1

Abstract

The present invention relates to a 3-way stopcock for medical treatment, capable of simultaneously and stably supplying not only one type of chemical liquid but also two or more types of chemical liquids (infusions, injections, antibiotics, etc.) required for a patient. A 3-way stopcock for medical treatment comprises: a chemical liquid supply means having a cup-shaped body with three outer surfaces with respective chemical liquid distribution tubes for distributing chemical liquids required for a patient, and having an open top; a chemical liquid control means having a joint member to be tightly and rotatably coupled to the body, the joint member having 3-way communication paths for selectively opening and closing the chemical liquid distribution tubes, the chemical liquid control means having an upper portion with an indication part indicating whether or not each communication path and each chemical liquid distribution tube communicate with one another; and coupling members detachably coupled to the chemical liquid distribution tubes, and having coupling portions for preventing the chemical liquids from leakage and preventing the coupling members from arbitrarily escaping from the chemical liquid distribution tubes.

Description

Medical 3-WAY Stop Cock

The present invention provides a stable coupling between the three-way stopcock's dispensing tube and a set of drug solutions when one or more drug solutions (sap, injection, antibiotics, etc.) are simultaneously supplied and administered to a patient. It relates to a medical 3-way stopcock which can supply a medicine in a state.

The medical 3-way stop cock is one of medical devices generally used in hospitals to supply various medicines, including fluids, to patients.

In other words, the medical 3-way stop cock refers to an injection port into which a plurality of chemical solutions are injected, ie, three connection pipes, to which a plurality of chemical solutions (eg, sap, injection, antibiotics, etc.) are provided to a patient.

When you want to connect the fluid set connector to the distribution pipe of the 3-way stopcock as described above, open the sealing cap (5) coupled to the distribution pipes (1), (2), and (3) on the left and right sides, The set is connected to supply the chemical solution. Since there is no fastening means between the distribution pipe of the 3-way stopcock and the infusion set connector and it is combined by simple interference fitting, the connection part can be easily separated if the care liquid is supplied a little while Since the liquid or blood flowed out and the patient's clothes and sheets were wetted, it was necessary to observe the patient, caregiver, and nurse carefully while injecting the medicine solution by connecting the medicine solution set.

Therefore, in order to solve the above problem, there are cases in which the connection portion of the 3-way stop cock distribution pipe and the infusion set connector is used for taping, but this is a hassle for taping and the distribution pipe of the 3-way stop cock after completion of chemical injection. There is a hassle to separate the taped tape to separate the fluid set connector.

In addition, when taking the water without taping the connection portion of the distribution pipe and the infusion set connector of the 3-way stop cock, it is often turned to the back of the water and then the distribution pipe and the infusion set connection portion of the 3-way stop cock are separated. As it occurs, it does not find its separation quickly, but at first the sap flows a little, but as time goes by, not only the sap but also the blood flows out, which not only contaminates the patient's clothing or sheets and blankets, but also contaminates the surrounding area. When spilled, the risk of worsening the condition of the patient was reached, and complaints frequently occurred due to complaints of patients and caregivers and neglect of patient management.

In addition, if the patient requires additional administration of the chemical solution, the additional chemical is supplied through the distribution tube 2 provided in the middle portion between the left and right sides, and the three-way stopcock dispensing tube 2 and the sap After the sets were combined, the sealing cap (5), which had been joined to the distribution tube (2), was most often discarded after being separated.It is rare to store and reuse them, or to disinfect them even if they are stored separately for reuse. After individual packaging or in the hospital, only the sealed caps are purchased and packaged and disinfected, and additional economic losses are still incurred. The nurse removes the solution set connector and stops the stopcock immediately after the patient is given the medicine. The sealing cap must be combined with the dispensing tube to seal it. It does not, of course, when in the sealed cap is not ready to remove the 3-way line from the drug solution set stopcock and not sealed, was always present a risk of infection via the opened dispensing tube.

The present invention was invented to solve the problems of the conventional medical 3-way stop cock as described above, and each formed in three places the chemical liquid dispensing tube is coupled to the outer peripheral surface of the cup-shaped body, the body to the A chemical liquid supply control means for selectively dispensing and supplying chemical liquids to each chemical liquid dispensing tube enables simultaneous supply and administration of two or more chemical liquids to the patient, as well as a solid and stable coupling between the liquid dispensing tube and the connection of the chemical liquid set. The purpose is to provide a medical 3-way stop cock that is made so that the connector of the chemical liquid set is not separated from the chemical liquid distribution tube.

Constitution for the problem solving means of the present invention for achieving the above object, each chemical liquid dispensing tube is formed on the outer peripheral surface to distribute the supply of the required chemical liquid to the patient, the chemical liquid consisting of a cup-shaped body is opened at the top Supply means; A coupling sphere is rotatably coupled to the body, and the coupling sphere is formed with a three-way communication path for selectively communicating and blocking the chemical liquid distribution pipe, and an upper portion of each of the communication paths and the chemical liquid distribution pipe. A chemical liquid supply control means formed by forming a display unit for recognizing communication; The coupling member is decomposably coupled to the chemical liquid dispensing pipe and, after the coupling, prevents leakage of the chemical liquid and at the same time, a coupling member having a coupling part which is not separated from the chemical liquid dispensing tube.

Medical 3-way stop cock of the present invention as described above, as described in the above object, to form a chemical liquid dispensing tube to each of the coupling member such as a syringe to the outer peripheral surface of the cup-shaped body in each of the three places, the body A chemical liquid supply control means for selectively dispensing and supplying chemical liquids to the chemical liquid distribution pipe is provided so that two or more kinds of chemical liquids can be simultaneously supplied and administered to the patient, as well as providing a solid and stable coupling structure between the coupling member and the chemical liquid distribution pipe. At the same time prevent the leakage of the coupling member is effective to prevent the separation and separation from the chemical liquid distribution pipe.

1 is a perspective view of a conventional medical 3-way stop cock,

Figure 2 is an exploded perspective view showing a medical 3-way stop cock instantaneous example of the present invention,

3 is a perspective view showing a medical 3-way stop cock instantaneous example of the present invention,

Figure 4 is a cross-sectional view showing a medical 3-way stop cock instantaneous example of the present invention,

Figure 5a to 5b is an excerpt configuration showing a first embodiment of the coupling structure of the chemical liquid distribution pipe and the coupling member of the present invention,

Figure 6a to 6b is an excerpt configuration showing a second embodiment of the coupling structure of the drug distribution tube and the coupling member of the present invention,

Figure 7a to 7b is an excerpt configuration showing a third embodiment of the coupling structure of the drug distribution tube and the coupling member of the present invention,

Figure 8a to 8b is an excerpt configuration showing a fourth embodiment of the coupling structure of the drug distribution tube and the coupling member of the present invention,

9a to 9b is an excerpt configuration showing a fifth embodiment of the coupling structure of the chemical liquid distribution pipe and the coupling member of the present invention;

Figure 10a to 10b is an excerpt configuration showing a sixth embodiment of the coupling structure of the drug distribution tube and the coupling member of the present invention,

11 is a plan view showing a state in which the two-way communication path and the two chemical liquid distribution tubes communicate with each other in the medical 3-way stop cock of the present invention,

12 is a plan view showing a state in which the three-way communication path and the three chemical liquid distribution tubes are in communication with each other in the medical 3-way stop cock of the present invention;

Figure 13 is a first embodiment showing the state of use of the medical 3-way stop cock of the present invention,

Figure 14 is a second embodiment showing the medical 3-way stopcock use of the present invention,

Figure 15 is a third embodiment showing the medical 3-way stop cock in use of the present invention.

Hereinafter, a medical 3-way stop cock according to the present invention will be described with reference to the accompanying drawings.

Medical 3-way stop cock (A) of the present invention, as shown in Figures 2 and 4, the respective chemical liquid dispensing pipes 120 in three directions on the outer periphery of the cup-shaped body 110, which is open at the top; It was formed to be integral with the body (110).

Each of the chemical liquid distribution pipes 120 may be integrally formed with the body 110 or may be installed to be decomposable from the body 110. When the chemical liquid distribution pipes are enabled, the chemical liquid distribution pipe ( 120) After the combination, the airtightness should be maintained so that the chemical liquid does not leak.

And each of the chemical liquid distribution pipe 120 is coupled to the coupling member 300 to be decomposed and coupled via the coupling portion 310 as shown in Figures 5a to 10d, and after the coupling to prevent leakage of the chemical solution and at the same time Since the coupling member 300 is not separated and separated from the chemical distribution pipe 120 at random, as well as the chemical solution that has been raised as a conventional problem, blood flows out and the patient's clothing or sheet and a blanket become wet, thereby contaminating the surroundings. Not only that, but a lot of blood is leaked and there is no risk of worsening the patient's condition.

On the other hand, the coupling member 300 is coupled to the chemical liquid dispensing pipe of the other 3-way stop cock is coupled to the sealing cap 320 and the chemical liquid dispensing pipe 120 to seal the unused chemical liquid dispensing pipe 120 The hollow connector 330, and the connector 340 is installed at the end of the chemical solution set (S) to be supplied with the chemical liquid distribution pipe 120 is coupled.

The coupling member 300 as described above, is coupled to the chemical solution dispensing pipe 120 and the coupling portion 310 so as to be decomposable, after the coupling is prevented leakage of the chemical solution, as well as from the chemical solution distribution pipe 120 Immunity is not easily separated and separated and maintains a strong and stable bonding force, as well as easily separated when separating the coupling member 300 from the chemical liquid distribution pipe 120.

The structure of the coupling part 310 of the first embodiment of the present invention having the above function is any one of the sealing cap 320 or the chemical liquid dispensing pipe 120 that is the coupling member 300 as shown in FIGS. 5A and 5B. One key 311 is formed, and the other of the sealing cap 320 or the chemical liquid distribution tube 120 is formed along the longitudinal direction of the sealing cap 320 or the chemical liquid distribution tube 120 to the key 311. ) Forms a key hole 312 to which the key hole 312 is firmly coupled, and at the end of the portion where the key hole 312 ends, a key seating groove 313 is formed at a different angle from the key hole 312 and connected to the key hole 312. .

After the key 311 is pushed into the key hole 312 in a state where the key 311 is coupled to the key hole 312 by the coupling part 310 of the first embodiment, the sealing cap 320 is keyed at the end of the key hole 312. When rotated toward the seating groove 313, while the key 311 is seated in the key seating groove 313, airtightness is maintained, and a solid and stable coupling is made to prevent leakage of the chemical solution, as well as the sealing cap 320 dispenses the chemical liquid. It will not be detached from the tube 120 to be detached.

The coupling portion 310 structure of the second embodiment of the present invention, as shown in Figure 6a and 6b, the male screw 314 to any one of the sealing cap 320 or the chemical liquid distribution pipe 120 that is the coupling member 300. Is formed, and the other of the sealing cap 320 or the chemical liquid distribution tube 120 is formed with a female screw 315 is screwed with the male screw 314 is formed.

The male screw 314 formed in any one of the sealing cap 320 or the chemical liquid dispensing pipe 120 by the coupling part 310 of the second embodiment structure as described above is the sealing cap 320 or the chemical liquid dispensing pipe 120. When the screw is coupled to the female screw 315 formed in the other one of the airtightness is maintained tight and stable coupling to prevent leakage of the chemical solution, as well as the sealing cap 320 is released from the chemical liquid distribution pipe 120 to leave It will not be separated.

When the sealing cap 320 is to be separated from the chemical liquid dispensing tube 120, when the sealing cap 320 is operated in the reverse order of coupling to the chemical liquid dispensing tube 120, the coupling member 300 is connected to the chemical liquid dispensing tube ( 120).

In the casting of the coupling part 310 according to the third embodiment of the present invention, as shown in FIGS. 7A to 7B, a key (A) is applied to either the hollow connector 330 or the chemical liquid dispensing pipe 120, which is the coupling member 300. 311 is formed, and the other one of the hollow connector 330 or the chemical liquid distribution tube 120 is formed along the longitudinal direction of the hollow connector 330 or the chemical liquid distribution tube 120, the key 311 is A key hole 312 is firmly coupled to each other, and a key seating groove 313 is formed at an end portion of the key hole 312 where the key hole 312 ends at a different angle from the key hole 312.

The hollow connector 330 is formed at the end of the key hole 312 after the key 311 is pushed into the key hole 312 in a state in which the key 311 is coupled to the key hole 312 by the coupling part 310 of the third embodiment. When rotated toward the key seating groove 313, while the key 311 is seated in the key seating groove 313, airtightness is maintained and a solid and stable coupling is made to prevent leakage of the chemical solution, as well as the hollow connector 330 Immunity from the chemical distribution tube 120 will not be separated from the separation.

The coupling portion 310 structure of the fourth embodiment of the present invention is a male screw 314 to any one of the hollow connector 330 or the chemical liquid dispensing pipe 120, which is the coupling member 300, as shown in FIGS. 8A and 8B. ) Is formed, and the female screw 315 is screwed to the male screw 314 to the other of the hollow connector 330 or the chemical liquid distribution tube 120 is formed.

The male screw 314 formed in any one of the hollow connector 330 or the chemical liquid dispensing pipe 120 by the coupling part 310 of the fourth embodiment has the hollow connector 330 or the chemical liquid dispensing pipe. When the screw threaded to the female screw 315 formed on the other one of the 120, the airtightness is maintained and a solid and stable coupling is made to prevent leakage of the chemical solution, as well as the hollow connector 330 from the chemical liquid distribution pipe 120 Exit and exit will not be separated.

And when the hollow connector 330 is to be separated from the chemical distribution tube 120, if the hollow connector 330 is operated in the reverse order of coupling to the chemical distribution tube 120, the hollow connector 330 is chemical From the dispensing tube 120.

In the casting of the coupling part 310 of the fifth embodiment of the present invention, as shown in FIGS. 9A to 9B, the key 311 is connected to either the connector 340 or the chemical liquid dispensing pipe 120 which is the coupling member 300. Is formed, the key hole 312 is formed along the longitudinal direction of the connector 340 or the chemical liquid distribution tube 120 to the other one of the connector 340 or the chemical liquid distribution tube 120, the key 311 is firmly coupled ), But a key seating groove 313 is formed at an end portion of the key hole 312 that is different from the key hole 312 and connected to the key hole 312.

After the key 311 is pushed into the key hole 312 in a state where the key 311 is coupled to the key hole 312 by the coupling part 310 of the fifth embodiment, the connector 340 is seated at the end of the key hole 312. When rotated toward the groove 313, while the key 311 is seated in the key seating groove 313, airtightness is maintained and a solid and stable coupling is made to prevent leakage of the chemical solution, as well as the connector 340 is a chemical distribution tube ( 120) it will not be separated from the exit.

In the structure of the coupling part 310 of the sixth embodiment of the present invention, as shown in FIGS. 10A and 10B, the male screw 314 is connected to any one of the connector 340 or the chemical liquid dispensing pipe 120, which is the coupling member 300. Is formed, and the other end of the connector 340 or the chemical liquid distribution tube 120 is formed with a female screw 315 is screwed with the male screw 314 is formed.

The male screw 314 formed in any one of the connector 340 or the chemical liquid dispensing pipe 120 by the coupling part 310 of the sixth embodiment structure is the connector 340 or the chemical liquid dispensing pipe 120. When the screw is coupled to the female screw 315 formed on the other, the airtightness is maintained and a solid and stable coupling is made to prevent leakage of the chemical solution, as well as the connector 340 is randomly escaped from the chemical distribution pipe 120 so as not to be separated. Will be.

And when the connector 340 is to be separated from the chemical liquid distribution tube 120, when the connector 340 is operated in the reverse order of coupling to the chemical liquid distribution tube 120, the connector 340 from the chemical liquid distribution tube 120 Are separated.

At this time, the key 311 or the key hole 312 and the male screw 314 or the female screw 315 formed in the chemical liquid distribution tube 120 of the present invention is preferably formed on the inner peripheral surface of the chemical liquid distribution tube 120, the coupling member The key 311 or the key hole 312 and the male screw 314 or the female screw 315 formed in the connector 340 which is 300 are preferably formed on the outer circumferential surface of the connector 340.

In addition, as shown in FIG. 4, the inner diameter of the chemical liquid dispensing tube 120 is gradually narrowed from the inner center portion to the inner end of the chemical liquid dispensing tube 120, and the coupling member 300 is coupled to the chemical liquid dispensing tube 120. The outer diameter is gradually narrowed from the outer center portion of the outer side to the outer end thereof, so that when the coupling member 300 is inserted into the chemical liquid distribution tube 120, the end of the coupling member 300 is connected to the chemical liquid distribution tube ( The inner circumferential surface of the 120 and more tight airtightness is maintained to prevent leakage of the chemical liquid.

In the body 110 of the present invention, as shown in FIGS. 2 to 4, the chemical liquid supply control means 200 is installed to block or supply the chemical liquid supplied to the chemical liquid distribution pipe 120. Specifically, it is as follows.

The structure of the chemical liquid supply control means 200, as shown in Figures 2 to 4 is formed with a coupler 210 is rotatably coupled through an open upper portion of the body 110, the coupler ( 210 is formed in the three-way communication path 220 is selectively communicated with and disconnected from the chemical liquid distribution pipe 120, the upper part of the communication between the communication path 220 and the chemical liquid distribution pipe 120 recognizes the presence or absence of mutual communication The display unit 230 is formed to allow.

And the coupler 210, a groove 211 is formed along the outer circumferential surface at the top, and the projection 130 is inserted into the groove 211 is coupled to the upper portion of the body 110 is the coupling sphere When the 210 is coupled to the inside of the body 110, the protrusion 130 is fitted into the groove 211 so that the coupling sphere 210 is rotatably installed at 360 ° without being separated from the body 110.

In addition, the upper end of the coupler 210, a hole 212 for coupling the sealing cap 320, which is the coupling member 300 is formed to be inward, the coupling member 300 is coupled to the hole 212 A fixing portion 213 is formed to prevent any detachment of the sealing cap 320.

The reason why the sealing cap 320 is coupled to the hole 212 is to seal and store the unused sealing cap 320 to the hole 212 by not sealing the chemical liquid distribution pipe 120, When the sealing cap 320 which is not used in the above manner is coupled to the hole 212, the loss of the sealing cap 320 may be prevented and the handling of the sealing cap 320 may be easy. have.

And the casting of the fixing portion 213 for fixing the sealing cap 320, when the key 311 is formed in the coupling member 300 is the form of a key hole in which the key 311 is coupled to the hole 212 In the case where the male screw is formed in the sealing cap 320, the female screw may be formed in the hole 212.

In addition, the three-way communication path 220 formed in the coupler 210 is made of a "⊥" shape that is in communication with each of the three chemical liquid distribution pipe 120. The display unit 230 extends along the three-way communication path 220 at the upper end of the coupler 210.

The reason why the display unit 230 extends along the three-way communication path 220 is that the communication path 220 among the three-way communication paths 220 communicates among the three chemical liquid distribution pipes 120. This is to make it easy to visually check whether the furnace 220 is exactly matched.

In addition, the three-way communication path 220 is formed in a "⊥" shape that is in communication with each of the three chemical liquid distribution pipes 120, the reason is, the chemical liquid distribution of any one of the three chemical liquid distribution pipes 120 It is to block the tube 120 and to communicate with the remaining two chemical liquid distribution tube 120 or to communicate easily and accurately with all of the chemical liquid distribution tube 120.

The three-way communication path 220 that acts as described above, the distance between the communication paths located on both sides of the center of the communication path located in the center is the same, and the three chemical liquid distribution pipe 120 also in the center The distance between the chemical liquid distribution pipe 120 located on both sides of the chemical liquid distribution pipe 120 is located in the same.

The method of communicating or blocking the communication path 220 formed in the coupling sphere 210 and the chemical liquid distribution pipe 120 formed in the body 110 as described above, the display unit 230 as shown in FIG. When the two display units 230 are in line with the two chemical liquid dispensing pipes 120 by rotating the coupler 210 using the two chemical communication pipes in two directions of the three-way communication paths 220 ( 12, and the three display unit 230 is in line with the three chemical liquid distribution pipe 120, as shown in Figure 12, all three-way communication paths 220, all three chemical liquid distribution pipe 120 ) Is in communication with each other.

When the two-way communication path 220 is in communication with the two chemical solution distribution pipes 120, when one kind of chemical solution is supplied to the patient as shown in Figure 13, all three-way communication path 220 When the three chemical liquid delivery tubes 120 are in communication with each other, as shown in FIG. 14, two chemical liquids are supplied to the patient.

In addition, as shown in Figure 15 is connected to the communication type connector 330 to the chemical solution distribution pipe 120 of one side, and for supplying another set of chemical solution (S) to the other side of the connector 330 is installed Another medical 3-way stopcock connected to the drug distribution pipe is installed there is an advantage that can be administered to three or more drugs at the same time.

The chemical liquid set (S) is a container (a bottle form, a tube form, a pack form) for accommodating a chemical liquid, one end connected to the container and installed to guide the transfer of the chemical liquid, and connected to the other end of the hose. It means that the connector is coupled to the chemical solution distribution pipe 120 is installed.

Medical 3-way stop cock of the present invention as described above has the advantage that one or two kinds of chemicals, as well as three or more chemicals to the patient at the same time easy, easy and stable without leakage, and coupling member It has the advantage of preventing the loss and at the same time easy to handle.

In addition to the advantages described above, the airtightness between the drug distribution pipe and the coupling member and the drug distribution pipe and the connector is maintained, and the solid and stable coupling is made, as well as the drug solution, which has been raised as a conventional problem, blood flows out of the patient's clothes or sheets and blanket Not only the problem of polluting the surroundings is solved, but there is no risk of causing a lot of blood leakage and worsening the patient's condition.

In addition, the medical 3-way stop cock of the present invention has the advantage of easy disassembly and coupling between the chemical liquid dispensing pipe and the coupling member and the chemical liquid dispensing pipe and the connecting port, which is convenient for handling and ensures stability.

Claims

Chemical solution supply means (100) consisting of a cup-shaped body 110, each of which is formed in each of the drug distribution pipe 120 is formed on the outer circumferential surface to supply the medicine solution required to the patient;

The coupling sphere 210 is rotatably coupled to the body is formed, the coupling sphere is formed with a three-way communication path 220 for selectively communicating and blocking the chemical liquid distribution pipe, the upper portion of each communication path Chemical liquid supply control means (200) formed by forming a display unit (230) capable of recognizing the mutual communication between the chemical and the liquid distribution pipe;

The coupling member 300 is decomposed and coupled to the chemical liquid distribution pipe, and after the coupling prevents leakage of the chemical liquid and at the same time prevents separation from the chemical liquid distribution tube. A medical 3-way stopcock characterized by.
The method of claim 1,

The chemical liquid dispensing pipe (120) is a medical 3-way stop cock, characterized in that arranged in each of the center of the straight line in the center, and the center of the both sides of the straight line.
The method of claim 1,

The coupler 210, the groove 211 is formed along the outer circumferential surface at the top, and the protrusion 130 is fitted to the groove is formed on the upper portion of the body is separated from the position after the coupler is coupled to the body Medical 3-way stop cock, characterized in that it is installed so as to be able to rotate 360 °.
The method of claim 1,

The upper surface of the coupler 210, the hole 212 for engaging a portion of the front end of the coupling member is formed to be inward, the inlet of the hole fixing portion 213 for preventing any separation of the coupling member coupled to Medical 3-way stop cock, characterized in that formed.
The method of claim 1,

The three-way communication path 220 formed in the coupling sphere, the medical 3-way stop cock, characterized in that formed in the "⊥" shape that is in communication with each of the three chemical distribution tubes.
The method of claim 1,

The display unit 230, the medical three-way stop cock, characterized in that formed along the three-way communication path in the upper end of the coupling.
The method of claim 1,

The coupling portion 310, the key 311 is formed on any one of the coupling member or the chemical liquid distribution tube, and forms the key hole 312 in which the key is coupled to the other of the coupling member or the chemical liquid distribution tube, Medical key three-way stop cock, characterized in that formed in the end of the key hole is a key seating groove (313) that is different from the key hole and the key hole in the end portion.
The method of claim 1,

The coupling portion 310, a male screw 314 is formed on either of the coupling member or the chemical liquid distribution tube, and the female screw 315 is screwed to the male screw on the other side of the coupling member or the chemical liquid distribution tube. Medical 3-way stop cock, characterized in that formed by.
The method of claim 1,

The coupling member 300 is a medical 3-way stop cock, characterized in that the sealing cap 320 to seal off the unused chemical distribution tube.
The method of claim 1,

The coupling member 300 is a medical 3-way stop cock, characterized in that the hollow connector 330 for interconnecting the medical 3-way stop cock and the medical 3-way stop cock through the chemical distribution tube.
The method of claim 1,

The coupling member 300 is a medical 3-way stop cock, characterized in that the chemical liquid set connector 340 is installed at the end of the chemical liquid set to supply the chemical liquid of the chemical liquid set (S) to the chemical liquid distribution tube.
The method of claim 1,

The inner diameter is gradually narrowed from the inner central portion to the inner end of the chemical liquid dispensing pipe 120, and from the outer central portion of the coupling member 300 coupled to the chemical liquid dispensing pipe to the outer end thereof. Medical 3-way stop cock, characterized in that the outer diameter is gradually formed to narrow.