WO2017090878A1

WO2017090878A1 - Flowrate regulating device for infusion set

Info

Publication number: WO2017090878A1
Application number: PCT/KR2016/010869
Authority: WO
Inventors: 이현우
Original assignee: 이현우
Priority date: 2015-11-26
Filing date: 2016-09-29
Publication date: 2017-06-01

Abstract

The present invention relates to a flowrate regulating device for a medical infusion set and, more specifically, to a flowrate regulating device for an infusion set, the device comprising: a body member formed in a cylindrical shape opened vertically, and having an inflow tube and a discharge tube, which protrude from both sides thereof; a rotating member rotatably coupled to the upper end of the body member, and having a plurality of flowrate regulating passages provided on the outer diametral surface thereof and connected to the inflow tube; a fixing member fixedly coupled to the lower end of the body member, and having a discharge passage provided on the upper surface thereof and connecting the lower ends of the flowrate regulating passages and the discharge tube; and an injection port unit selectively provided at the rotating member and/or the fixing member.

Description

Flow regulator for infusion set

The present invention relates to a flow rate adjusting device for a medical infusion set, to be described in more detail, a cylindrical shape that is open in the vertical direction in the inlet and outlet pipes protruding on both sides, and rotatable on the top of the body member Rotating member having a plurality of flow control passage is connected to the outer diameter surface is connected to the inlet pipe, and is fixedly coupled to the lower end of the body member, the upper surface discharge passage connecting between the lower end of the flow control passage and the discharge pipe And an injection port unit provided on at least one of the rotating member and the fixing member, which is provided with a fixing member.

In general, the fluid set refers to a medical device used to inject fluid into the human body. 1 shows a configuration of a typical infusion set, the withdrawal chamber 100 for taking out the sap stored in the sap bag 10, the sap tube 200 through which the sap passes, and the sap tube ( The connecting pipe 300 is installed at the end of the 200, the flow control clamp 400 and the Y-shaped branch pipe 500 is installed in the middle portion of the fluid tube 200, and the syringe coupled to the connecting pipe 300 600 and so on.

Here, the flow rate control clamp 400 serves to adjust the flow rate of the sap flowing into the human body through the infusion tube 200, consisting of a guide rail 410 and the pressure roller 420. The conventional flow control clamp 400 has a disadvantage in that it is difficult to precisely and accurately control the flow rate by pressing the infusion tube 200 while moving the pressing roller 420 on the guide rail 410.

In order to solve this problem, Korean Patent Nos. 10-0468222 (January 17, 2005), 10-0472033 (February 03, 2005), and 10-1487754 (January 23, 2015) New rotary flow controllers are introduced. Looking at the structure of the drug solution injection amount control device 100 introduced in the Patent No. 10-0472033, the fixing member 10 and the rotatable to the fixing member 10 is connected to the infusion tube 300 It consists of a control member 20 is coupled.

The fixing member 10 is provided with a sap inlet 13 and a sap discharge hole 14 communicating with the sap tube 300 on both sides, the adjustment member 20 is provided in the sap inlet 13 The flow path 23 to be connected, the oil groove 25 to be connected to the fluid discharge hole 14, and the through hole 24 to connect the flow path 23 and the oil groove 25 are provided. Here, the flow path 23 has a structure in which the width and depth gradually increase as it approaches the through-hole 24 in the circumferential direction of the adjustment member 20, and according to the rotation angle of the adjustment member 20 The flow rate of the sap passing through the flow path 23 can be adjusted.

However, the rotary flow rate control device having the above structure has a problem in that injection molding is difficult because the overall structure is very complicated, and the fluid flow is not smooth because the copper wire of the flow path through which the sap passes is too complicated. . In addition, in order to inject another drug into the fluid because it is structurally 2-way (two-way), as shown in FIG. 1, the branch pipe 500 is provided with an injection port 510 in the middle of the fluid tube There was a problem that must be installed separately.

[Preceding technical literature]

(Patent Document 1) Registered Patent No. 10-0468222 (January 17, 2005)

(Patent Document 2) Registered Patent No. 10-0472033 (February 03, 2005)

(Patent Document 3) Registered Patent No. 10-1487754 (January 23, 2015)

Accordingly, an object of the present invention is to provide a flow control device for a fluid set for which the overall structure is simple, injection molding is easy, and the fluid flow is smooth and leakage does not occur.

Another object of the invention is to select a three-way structure or a four-way structure, and can also perform the function of a stopcock that blocks some flow paths as necessary. It is to provide a flow rate control device for the set of fluids.

In one embodiment, a flow rate adjusting device for an infusion set has a cylindrical shape that is open in a vertical direction and has an inlet pipe protruding to one side and a discharge pipe protruding in an opposite direction from a lower position than the inlet pipe; The lower half is rotatably coupled to the upper end of the body member, and a plurality of flow control passages formed in up and down directions are arranged side by side at a predetermined interval on the outer diameter surface of the lower half contacting the body member, and a rotating lever is installed at the upper half. A rotating member; A fixing member having an upper half fixedly coupled to a lower end of the body member and having a discharge passage recessed in a radial direction on an upper surface of the upper surface contacting the bottom of the rotating member; Characterized in that comprises a.

The flow regulating passage is arranged so that each cross-sectional area is sequentially increased along the circumferential direction of the rotating member, any one of the flow regulating passage is connected to the inlet pipe as the rotating member rotates, the discharge passage The discharge pipe is connected between the discharge pipe at the lower end of the flow control passage connected to the inflow pipe, and the maximum cross-sectional area of the flow control passage does not exceed the cross-sectional area of the discharge passage.

At least one of the rotating member and the fixing member has a central hole H penetrating in a vertical direction along a central axis, and an injection port unit is provided in the central hole H.

In addition, the lower end of the flow control passage is provided with angle adjustment grooves at regular intervals, respectively, the inner diameter surface of the body member is provided with a locking jaw corresponding to the angle adjustment groove, when the rotating member rotates the locking The jaw rides through the angle adjusting groove one by one, and the rotation angle is adjusted so that any one of the flow control passages is correctly connected to the inflow pipe.

The flow rate adjusting device for a fluid set according to the present invention has an effect that the overall structure is simpler than the conventional rotary flow rate adjusting device, so that the injection molding is easy, and the fluid flows smoothly and leakage does not occur.

In addition, the flow rate control device of the present invention, by installing the injection port unit on at least one of the rotating member and the fixed member to a three-way (3-way) structure or a four-way (4-way) structure as necessary There is an effect that can be selectively configured.

In addition, the flow rate adjustment device of the present invention is convenient to use and the user is easily connected to any one of the flow rate control passage by the combination of the angle adjustment groove installed in the rotating member and the locking jaw provided in the body member. There is an effect that can accurately distribute the desired flow rate.

1 is a view showing the configuration of a typical infusion set,

2 is a combined perspective view of a flow control device according to an embodiment of the present invention,

3 is a cross-sectional view of the combination of FIG.

4 is a partially cutaway perspective view of the Figure 2,

5 is a view showing the arrangement of the flow control passage 21 and the angle adjustment groove 23 in FIG.

10,10a, 10b; Trunk member 11; Inlet pipe

12; Discharge line 13; Jam

14; First stopper 15; Upper ring groove

16; Lower ring groove 17; Fixing groove

20; Rotating member 21; Flow control passage

22; Rotary lever 23; Angle adjustment groove

24; Second stopper 25; Jam

26; Flow path blocking wall 27; Free Pass Path

30; Fixing member 31; Discharge passage

32; Locking projection 33; Fixing protrusion

40; Injection port unit 41; Insertion tube

42; Port housing 43; Rubber warfare

44; Closing cap H; Concourse

S; Slit

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention. However, even if the configuration necessary to practice the present invention belong to the known technology, a detailed description of the configuration that can be easily implemented by those skilled in the art from the known technology will be omitted. For convenience, the side in which the rotating member 20 is coupled with respect to the body member 10 in FIGS. 2 to 4 is divided into an 'up' direction and a side in which the fixing member 30 is coupled in a 'down' direction. Explain. In addition, the same reference numerals are assigned to components having the same function even if the components are arranged at different positions.

As shown in FIG. 2, the flow rate adjusting device for an infusion set according to the present invention has a cylindrical body member 10 which is open in a vertical direction and a rotating member rotatably coupled to an upper end of the body member 10. 20, the fixing member 30 fixedly coupled to the lower end of the body member 10.

First, the body member 10 has an inlet pipe 11 and a discharge pipe 12 protruding in both sides. At this time, the inlet pipe 11 and the discharge pipe 12 is protruded in the opposite direction to each other, the inlet pipe 11 is preferably disposed at a relatively higher position than the discharge pipe (12).

The inlet pipe 11 is connected to a fluid tube connected to, for example, a sap bag, and the discharge tube 12 is connected to a fluid tube connected to, for example, a syringe. The connection structure of the inlet pipe 11 and the discharge pipe 12 and the fluid tube may be configured by a forced insertion method, or may be configured by a screwing method using a tube connector.

The body member 10 may be composed of a whole body, or may be separated into an upper body member (10a) and a lower body member (10b) for convenience in the manufacturing process. 2 to 4 of the present invention illustrates a case in which the body member 10 is separated into two bodies, and the inlet pipe 11 is installed in the upper body member 10a and the lower body member 10b. ) Is provided with the discharge pipe (12). The upper body member 10a and the lower body member 10b are coupled to each other by an interference fit method or a screwing method.

3 and 4, the rotation member 20 is rotatably coupled to the upper end of the body member 10, the lower half of the outer diameter surface in contact with the body member 10 in the vertical direction A plurality of flow control passages 21 are formed side by side at regular intervals.

The rotary lever 22 protrudes from the upper end of the rotating member 20. The rotary lever 22 may be any structure as long as the rotary member 20 can be conveniently rotated. One of the flow rate control passages 21 is connected to the inlet pipe 11 according to the rotational position of the rotary member 20.

The fixing member 30 is the upper half is fixedly coupled to the lower end of the body member 10, the upper surface of the fixing member 30 in contact with the bottom surface of the rotating member 20 inside the body member 10 do.

The upper surface of the fixing member 30 is provided with a discharge passage 31 in the radial direction as shown in FIG. One end of the discharge passage 31 is connected to the lower end of the flow control passage 21, and the other end thereof is connected to the discharge pipe 12.

As shown in Figure 4 and 5, the flow control passage 21 provided on the outer diameter surface of the rotating member 20 is arranged so that each cross-sectional area is sequentially increased along the circumferential direction of the rotating member 20 have. Then, any one of the flow rate control passage 21 is connected to the inlet pipe 11 as the rotating member 20 rotates.

In addition, the discharge passage 31 formed on the upper surface of the fixing member 30 is between the discharge pipe 12 at the lower end of the flow control passage 21 connected to the inlet pipe 11 of the flow control passage (21) Connect it. Therefore, the sap flowing into the inflow pipe 11 passes through any one of the flow control passage 21 and the discharge passage 31, and then is discharged into the discharge tube 12.

At this time, the cross-sectional area of the flow control passage 21 having the largest cross-sectional area among the flow control passages 21 does not exceed the cross-sectional area of the discharge passage 31. That is, the cross-sectional area of the flow control passage 21 does not exceed the cross-sectional area of the discharge passage 31, respectively. Therefore, the flow rate of the sap flowing into the inlet pipe 11 is determined only by the cross-sectional area of the flow rate control passage 21 connected to the inlet pipe 11.

In addition, the user may arbitrarily select the flow control passage 21 connected to the inlet pipe 11 while rotating the rotary member 20. An outer circumferential surface of the rotating member 20 may display a scale (not shown) corresponding to each flow control passage 21 so that a user may easily select a desired flow control passage 21.

Meanwhile, at least one of the rotating member 20 and the fixing member 30 penetrates a central hole H in a vertical direction along a central axis, and an injection port unit 40 in the central hole H. This can be installed. The injection port unit 40 is used for inserting a syringe or a spike, and any of the ports for a conventional fluid set may be used. Drugs injected through the injection port unit 40 are respectively introduced into the discharge passage 31 of the fixing member 30 through the central hole (H).

If the injection port unit 40 is provided only on either the rotating member 20 or the fixing member 30, the injection port unit 40 is a three-way structure, and if both are provided on both sides, It becomes a 4-way structure. 2 to 4 illustrate a four-way structure in which two injection port units 40 are installed.

3 and 4, the injection port unit 40 shows an embodiment of the present invention, an insertion tube 41 inserted into the central hole H, and one end of the insertion tube 41. It is configured to include a cylindrical port housing 42 installed in, the rubber field 43 embedded in the port housing 42, and a closing cap 44 to prevent the rubber field 43 from being separated.

The rubber field 43 has an empty inside and a slit portion S is formed at one side, and the slit portion S is exposed out of the closing cap 44 to facilitate insertion of a spike. A filter (not shown) may be installed between the insertion pipe 41 and the rubber field 43 to prevent the inflow of debris or foreign matter. In addition, the closing cap 44 may be provided with an outer cap (not shown) to cover and protect the slit portion (S) of the rubber field 43.

As shown in Figures 4 and 5, the lower end of the flow control passage 21 of the rotating member 20 is provided with an angle adjusting groove 23 at regular intervals, respectively, the inner diameter surface of the body member 10 the angle A locking jaw 13 corresponding to the adjustment groove 23 may be installed. Thus, when the rotating member 20 is rotated, the locking jaw 13 rides through the angle adjusting groove 23 one by one so that any one of the flow control passages 21 is correctly connected to the inlet pipe 11. Set the angle of rotation.

The sap flowing into the flow regulating passage 21 flows into the discharge passage 31 through the angle adjusting groove 23. Therefore, the locking step 13 is preferably installed on the opposite side of the inlet pipe 11 as shown in Figure 4 so as not to disturb the flow of the sap passing through the flow control passage (21).

In addition, as shown in FIG. 2, a first stopper 14 protrudes from an upper edge of the body member 10, and an outer diameter surface of the rotating member 20 corresponds to the first stopper 14. It is preferable that the 2nd stopper 24 is provided. The first stopper 14 and the second stopper 24 function to limit the rotation angle of the rotating member 20 to within 360 degrees.

In addition, as shown in Figure 4, the lower and upper inner diameter surface of the body member 10 is formed with an upper annular groove 15 and a lower annular groove 16 in the circumferential direction, respectively, the lower half of the rotating member 20 The outer ring surface and the outer ring surface of the upper half of the fixing member 30 are provided with engaging

ring projections

25 and 32 coupled to the upper ring groove 15 and the lower ring groove 16, respectively.

The upper annular groove 15 and the lower annular groove 16 and the locking

annular projections

25 and 32 corresponding thereto may be forcibly inserting the rotating member 20 and the fixing member 30 into the trunk member 10. And, once inserted, it is preferable to have a tooth structure corresponding to each other so that the rotating member 20 and the fixing member 30 is not separated from the body member 10. In this case, an O-ring (not shown) may be installed between the trunk member 10, the rotation member 20, and the fixing member 30 to block leakage in place.

In addition, as shown in Figure 2, the lower edge of the body member 10 is formed with a fixing groove 17, the fixing projection inserted into the fixing groove 17 on the outer diameter surface of the fixing member 30. 33 is provided. The fixing groove 17 and the fixing protrusion 33 serve to fix the fixing member 30 so as not to rotate in the body member 10.

Finally, as shown in Figure 5, the outer diameter surface of the rotating member 20 may be a flow path blocking wall 26 to block the inlet of the inlet pipe 11 to block the flow of the sap. The flow path blocking wall 26 is a region in which the flow rate control passage 21 is not formed among the outer diameter surfaces of the rotating member 20, and the flow rate control passage 21 having the smallest cross-sectional area and the maximum cross-sectional area thereof. It is arranged between the 21.

In addition, a free pass passage 27 may be installed next to the flow path blocking wall 26 to allow the sap introduced into the inlet pipe 11 to be passed without adjustment of the flow rate. The cross-sectional area of the free pass passage 27 is the same as that of the inlet pipe 11 and the discharge passage 31.

Although the present invention has been described in detail using the preferred embodiments, the scope of the present invention is not limited by these embodiments.

Claims

A cylindrical member that is open in a vertical direction and has an inflow pipe 11 protruding to one side and a discharge member 12 protruding in an opposite direction from a position lower than the inflow pipe 11;

The lower half is rotatably coupled to the upper end of the body member 10, and a plurality of flow control passages 21 formed in the vertical direction are arranged side by side at an interval on the outer diameter surface of the lower half contacting the body member 10. A rotating member 20 having a rotating lever 22 installed thereon;

The upper half is fixedly coupled to the lower end of the body member 10, the upper surface in contact with the bottom surface of the rotating member 20 includes a fixing member 30, the discharge passage 31 is recessed in the radial direction;

The flow regulating passage 21 is disposed so that each cross-sectional area is sequentially increased along the circumferential direction of the rotating member 20, any one of the flow regulating passage 21 as the rotating member 20 rotates. Is connected to the inlet pipe 11, the discharge passage 31 is connected between the discharge pipe 12 at the lower end of the flow control passage 21 connected to the inlet pipe 11, the flow control passage And a maximum cross-sectional area of (21) does not exceed the cross-sectional area of the discharge passage (31).
According to claim 1, At least one of the rotating member 20 and the fixing member 30 is passed through the central hole (H) in the vertical direction along the central axis, the injection hole in the central hole (H) Flow rate control device for a set of fluid, characterized in that the unit 40 is installed.
According to claim 2, The injection port unit 40, Insertion tube 41 is inserted into the central hole (H), Cylindrical port housing 42 provided at one end of the insertion tube 41 and In order to prevent the detachment of the rubber field 43 and the rubber field 43 having the slit portion S installed at one side and embedded in the port housing 42, the finish for exposing the slit portion S is completed. Flow control device for a set of fluids comprising a cap (44).
According to claim 1 or 2, wherein the lower end of the flow control passage 21 is provided with an angle adjusting groove 23 at regular intervals, respectively, the inner diameter surface of the body member 10, the angle adjusting groove ( 23 is provided with a locking jaw 13 corresponding to the rotation member 20 when the rotating member 20 rotates, the locking jaw 13 rides through the angle adjusting groove 23 one by one, and the flow regulating passage 21 A flow rate control device for a fluid set, characterized in that to obtain a rotation angle so that any one of the) accurately connected to the inlet pipe (11).
The body member 10 is separated into an upper body member 10a on which the inlet pipe 11 is installed, and a lower body member 10b on which the discharge pipe 12 is installed. , The latching jaw (13) is a flow rate adjusting device for a set of fluid, characterized in that installed on the opposite side of the inlet pipe (11).
According to claim 1 or 2, wherein the first stopper 14 protrudes from the upper edge of the body member 10, the outer diameter surface of the rotating member 20 corresponds to the first stopper 14 The second stopper 24 is provided so that the rotation angle of the rotating member 20 is limited to within 360 degrees by the first and second stoppers 14 and 24. Device.
According to claim 1 or 2, wherein the lower and upper inner diameter surface of the body member 10 is formed with an upper annular groove 15 and a lower annular groove 16 in the circumferential direction, respectively, of the rotating member 20 The lower half outer diameter surface and the upper half outer diameter surface of the fixing member 30 are provided with engaging ring projections 25 and 32 coupled to the upper annular groove 15 and the lower annular groove 16, respectively, and the lower edge of the housing 11. In the fixing groove 17 is recessed, the outer surface of the fixing member 30 is provided with a fixing protrusion 33 is inserted into the fixing groove 17 to limit the rotation of the fixing member 30 is provided. A flow control device for an infusion set.
According to claim 1 or 2, wherein the outer diameter surface of the rotating member 20 of the inlet pipe 11 between the flow rate control passage 21 having a minimum cross-sectional area and the flow rate control passage 21 having a maximum cross-sectional area. Flow passage blocking wall 26 for blocking the flow of the sap to block the inlet and the free passage passage 27 for passing the sap introduced into the inlet pipe 11 without adjusting the flow rate for sap set Flow regulator.