WO2016111401A1

WO2016111401A1 - Three-way valve for infusion and infusion set comprising same

Info

Publication number: WO2016111401A1
Application number: PCT/KR2015/000264
Authority: WO
Inventors: 강대원
Original assignee: (주)엠에스디바이스
Priority date: 2015-01-09
Filing date: 2015-01-09
Publication date: 2016-07-14
Also published as: KR101553227B1

Abstract

The present invention relates to a three-way valve provided in an infusion circuit for supplying the human body with an infusion, and an infusion set comprising the same, the three-way valve comprising: a valve body having a first manifold and a second manifold arranged as straight flow paths, and a third manifold arranged perpendicular to the first and second manifolds; an operation knob which is provided in the valve body and of which the rotational operation switches the flow of the manifolds, wherein guide protrusions for assembling are provided, on the upper part and the lower port relative to the flow paths, on a rotational surface where the valve body and the operation knob come into contact with each other and rotate.

Description

Three-way valve for infusion and infusion set including same

The present invention relates to a three-way valve provided in the fluid circuit for supplying fluid to the human body and a fluid set comprising the same.

In general, the sap is parenterally supplied with artificial solution such as a mixture of water and electrolyte, carbohydrate, amino acid solution, glucose solution, plasma net, textlan, erythrocyte suspension, intravenously, or injected into a certain tissue, or a therapeutic solution thereof. Say.

In general, the sap set includes a container (a sap bottle or a sap bag) containing a sap, a sap withdrawal part for discharging sap from a sap container, and a sap injecting part which is connected with a sap withdrawal part and a sap tube to inject sap into the human body And the like.

The infusion outlet is composed of a drip chamber assembled with the outlet provided in the container, and the infusion inlet is composed of a needle hub to which the needle is fixed, and a connection tube connected to the needle hub to connect the needle to the patient's vein. The needle hub, which is inserted into the needle and fixedly coupled with the injection needle, is fixed to the connecting tube, and the fluid in the container is injected into the patient.

On the other hand, when performing transfusion or transfusion therapy, three-way valves are used to mix and inject other chemicals or to collect fluid flowing along the flow path.

For example, Korean Patent Publication No. 10-2004-0064708 (published date: 2004.07.19) discloses a three-way valve used for a transfusion circuit or a transfusion circuit.

The present invention is to provide a set of the fluid to deliver the fluid in the container to the human body, and in particular to provide a three-way valve and improved incorporation of the operation knob for switching the flow path, and a fluid set including the same.

The three-way valve according to the present invention includes: a valve body having a first branch pipe and a second branch pipe arranged in a straight flow path, and a third branch pipe disposed perpendicularly to the first branch pipe and the second branch pipe; And a manipulation knob provided in the valve body and configured to switch flow paths of the branch pipes by a rotation operation. The guide protrusions are respectively provided on the upper and lower portions of the rotating body where the valve body and the manipulation knob come into contact with each other to rotate. It is characterized in that the assembly is made.

Preferably, in the present invention, at least one branch pipe is formed with a screw thread for assembling the coupler, and is characterized in that a positioning member for fitting engagement with the coupler is provided.

Preferably, in the present invention, the branch pipe is characterized in that the screw thread is formed on the outer diameter and the outer tooth determining member is formed on the inner diameter.

Next, the sap set according to the present invention includes a drip chamber provided with an introduction needle fixed to the withdrawal portion provided in the sap container; A fluid injecting part connected to the drip chamber and a fluid tube to inject fluid into the human body; And a three-way valve provided in the fluid tube, wherein the three-way valve includes: a first branch pipe and a second branch pipe disposed in a straight flow path, and a third valve disposed vertically with the first branch pipe and the second branch pipe. A valve body having a branch pipe; And a manipulation knob provided in the valve body and configured to switch flow paths of the branch pipes by a rotation operation. The guide protrusions are respectively provided on the upper and lower portions of the rotating body where the valve body and the manipulation knob come into contact with each other to rotate. It is characterized in that the assembly is made.

Preferably in the present invention, at least one branch pipe, the end of the infusion tube assembly is made of a screw assembly is made; It further comprises a fluid tube joint assembly including a fixing ring for fixing the socket and the fluid tube while surrounding the outer circumferential surface of the fluid tube.

More preferably, in the present invention, the branch pipe is characterized in that the positioning member which is fitted with the socket is provided.

Preferably in the present invention, the drip chamber, the chamber body; A sealing cap having the introduction needle fixed thereto and fitted with an opening end of the chamber body; And a fixing ring for fixing the chamber body and the sealing cap while surrounding a portion of the outer circumferential surface of the chamber body.

Preferably, in the present invention, the chamber body is formed with a fixing protrusion protruding in the radial direction at the opening end, the sealing cap is characterized in that the engaging border is formed to form a groove in which the fixing protrusion of the chamber body is pressed do.

More preferably, in the present invention, the sealing cap further includes a skirt extending inside the engagement border and longer than the engagement border.

More preferably, in the present invention, the skirt is inserted into the chamber body and is in surface contact with the inner circumferential surface, wherein the skirt is characterized in that it is longer than the length of the fixing ring.

Preferably, in the present invention, the main body is formed with a pair of guide slots in the longitudinal direction on the inside; A roller having a hinge shaft inserted into the guide slot and a tooth formed on an outer circumferential surface to press the fluid tube according to a linear movement; It further includes a flow regulator is fixed to one side of the disk rotatably assembled to the hinge shaft and comprising a stopper that is teeth and teeth.

The three-way valve of the present invention can enhance the fastening force by improving the assembly structure of the operating knob that is provided to rotate the valve body for switching of the flow path, and improves the assembly by the joint assembly of the fluid tube assembled with the three-way valve It can work.

In addition, the infusion set including the three-way valve can be mechanically assembled through the fixing ring has the effect of providing an environmentally friendly medical device by eliminating the use of adhesives.

1 is a view showing a set of sap according to the present invention,

2 is a cross-sectional configuration diagram of a drip chamber in an infusion set according to the present invention;

3 is a cross-sectional configuration of the fluid tube joint assembly in the infusion set according to the present invention,

Figure 4 in the infusion set according to the present invention, a perspective view of a portion of the flow regulator cut;

Figure 5 (a) (b) is a plan view and a cross-sectional view of the three-way valve, respectively, in the infusion set according to the present invention.

Specific structural or functional descriptions presented in the embodiments of the present invention are only illustrated for the purpose of describing the embodiments according to the inventive concept, and the embodiments according to the inventive concept may be implemented in various forms. In addition, it should not be construed as limited to the embodiments described herein, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Meanwhile, terms such as first and / or second in the present invention may be used to describe various components, but the components are not limited to the terms. The above terms are for the purpose of distinguishing one component from other components only, for example, within the scope not departing from the scope of the right according to the concept of the present invention, the first component may be called a second component, Similarly, the second component may also be referred to as the first component.

When a component is referred to as being "connected" or "connected" to another component, it is to be understood that the component may be directly connected or connected to the other component, but other components may exist in between. something to do. On the other hand, when any component is said to be "directly connected" or "directly contacted" to another component, it should be understood that no other component exists in the middle. Other expressions for describing relationships between components, such as "between" and "immediately between" or "adjacent to" and "directly adjacent to", should likewise be interpreted.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. The terms "comprises" or "having" herein are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof that is implemented, and that one or more other features or numbers, It is to be understood that it does not exclude in advance the possibility of the presence or addition of steps, actions, components, parts or combinations thereof.

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

As illustrated in FIG. 1, the infusion set has a drip chamber 110 connected to a lead portion 11 provided in the infusion bag 10, and the drip chamber 110 is infused with an infusion tube 101. Connected with 120.

Reference numeral 12 is an infusion infusion portion to inject the sap into the sap bag.

The infusion unit 120 is composed of a needle hub 121 to which the injection needle is fixed, and a connection tube 122 connected to the needle hub 121 to insert the needle into the vein of the patient to the needle hub 121. After fixing, the needle hub 121 is fixed to the connection pipe 122.

The three-way valve 170 is connected to the fluid bag 10 and the fluid infusion part 120 to be provided in the middle of the fluid tube 101 through which the fluid flows.

Figure 5 (a) (b) is a plan view and a cross-sectional view of the three-way valve according to the present invention, respectively.

As illustrated in FIG. 5A, the three-way valve 170 includes the first branch pipe 171 and the second branch pipe 172, the first branch pipe 171, and the second branch pipe disposed in a straight flow path. And a third branch pipe 173 disposed perpendicular to the branch pipe 172, and an operation knob 174 corresponding to each branch pipe to communicate with the flow path so as to switch the flow path.

The first branch pipe 171, the second branch pipe 172, and the third branch pipe 173 are constituted by one valve body, and the operation knob 174 is rotatably coupled to the valve body to switch the flow path. This is done.

Typically, the first branch pipe 171 and the second branch pipe 172 are used as the main flow path, and the third branch pipe 173 disposed vertically is mixed with the drug or the fluid is collected. It is used to do

The first branch pipe 171 and the second branch pipe 172 are coupled to the infusion tube via a separate coupler 175, wherein the coupler 175 and the infusion tube are fixed by using a fixing ring as described above. Assembly can be made.

The third branch pipe 173 removes the cap 176 only when the cap 176 is combined and uses a coupler.

In particular, as illustrated in (b) of FIG. 5, the three-way valve 170 of the present invention has a valve body 170a and an operation knob 174 contacted to a rotating surface where rotation is performed, respectively, on the upper and lower sides of the flow path.

Guide protrusions

174 and 175 may be provided to assemble and rotate the manipulation knob 174.

The valve body 170a and the operation knob 174 are provided with two

guide protrusions

176 and 177 on the rotation surface, thereby improving the coupling force between the valve body 170a and the operation knob 174, and operating knob ( 174 is precisely rotated on the axis of rotation to enable a smooth rotation operation.

Next, the coupler 175 assembled to the branch pipe may be assembled with screws, and in particular, a positioning protrusion 178 may be provided to be assembled with the screw thread. In this embodiment, a screw thread 172a is formed at the outer diameter of the second branch pipe 172 to assemble the screw with the coupler 175, and a groove is formed at the inner diameter of the second branch pipe 172 to couple the coupler 175. It is shown that is assembled with the positioning projection 178 of.

This positioning projection 178 guides the correct assembly position when assembling the branch pipe and the coupler, and prevents the screw loosening.

Referring back to Figure 1, in the present invention, the drip chamber 110 is provided with an introduction needle is connected to the lead portion 11, specifically, the drip chamber is a chamber body of a transparent material, the sealing cap is fixed to the introduction needle It is configured to exclude the adhesive and the assembly is made through the fixing ring.

Referring to FIG. 2, the drip chamber 110 has a chamber body 111, a sealing cap 113 fixed with an introduction needle 112 at an upper end thereof, and fitted with an opening end of the chamber body 111, and a chamber. It includes a fixing ring 114 for fixing the chamber body 111 and the sealing cap 113 while wrapping the outer peripheral surface of the body (111).

Specifically, the sealing cap 113 is provided with an engagement border 113a to form a groove for receiving the upper opening end of the chamber body 111 is fitted with the chamber body 111 is made, preferably, the chamber body A fixing protrusion 111a protruding in the radial direction is formed at the upper opening end of the 111 so that the fixing protrusion 111a is press-fitted into the groove of the engagement edge 113a.

The fixing ring 114 is provided on the outer circumferential surface of the chamber body 111 in a ring shape, the inner diameter is set to be approximately the same or somewhat smaller than the outer diameter of the chamber body 111 to maintain a minimum clearance.

In addition, the sealing cap 113 is located inside the engagement border 113a and is provided with a skirt 113b extending longer than the engagement border 113a, and the skirt 113b is inserted into the chamber body 111 to have an inner circumferential surface and a surface. Contact. Preferably, the length L1 of the skirt 113b extends from the assembled position of the fixing ring 114 to at least the lower position of the fixing ring 114.

The chamber body 111 has an inverted conical shape having a wide cross section upwardly as a whole, and thus, presses the fixing protrusion 111a of the chamber body 111 into the engagement edge 1113a of the sealing cap 113 and thus the chamber body 111. ) And the sealing cap 113 is temporarily assembled, and then the fixing ring 114 is pushed upward to firmly fix the chamber body 111 and the sealing cap 113.

On the other hand, the introduction needle 112 may be provided with an auxiliary protrusion 112a having a step on the outer circumferential surface of the tip, the auxiliary protrusion 112a is the introduction needle 112 to the lead portion 11 of the sap bag 10 When connected, the introduction needle 112 is prevented from being pulled out of the lead portion 11.

In addition to the drip chamber, the fastening structure using the fixing ring may be equally applied to the assembly of the infusion tube.

Figure 3 is a cross-sectional configuration of the fluid tube joint assembly, one end of the fluid tube 101 is assembled, the socket 130 and the fluid tube 101, while surrounding the outer peripheral surface of the socket 130 and the fluid tube 101 It comprises a; fixing ring 132 to be fixed.

The socket 130 is provided with a hollow fixing tube 131 having an inner diameter larger than the inner diameter of the infusion tube 101 is formed, preferably, the length (L2) of the fixing tube 131 and the fixing ring 132 is About the same.

The fluid tube joint assembly configured as described above presses the fluid tube 101 into the fixed tube 131 to temporarily assemble the socket 130 and the fluid tube 101, and then pushes the fixing ring 132 to the assembly site to fix the tube 131. And the fluid tube 101 can be firmly fixed.

In the present embodiment, the socket may correspond to any configuration in which the fluid tube is assembled in the fluid set, for example,

branch tubes

160 and 190 connected to the fluid tube to inject a separate drug (see FIG. 1). ), A flow controller 150 or a filter 180, and the like.

Referring back to Figure 1, the fluid tube 101 may be provided with a

flow regulator

140, 150 for adjusting the flow rate of the sap. In this embodiment, two types of

flow regulators

140 and 150 are illustrated, the first flow regulator 140 is a roller clamp and the second flow regulator 150 is an IV flow regulator. One roller clamp of the conventional configuration will be described below, and in the following description, the flow regulator refers to the roller clamp.

In the present invention, the flow controller 140 is composed of a main body 141 and a roller 142 attached to the main body so as to be movable back and forth, and the outer peripheral surface of the roller 142 and the bottom surface of the main body 141 having an inclination. The fluid tube 101 is sandwiched therebetween, and the flow rate of the fluid is adjusted while the shape (channel cross-sectional area) of the constriction portion of the fluid tube 101 is changed by the movement of the roller 142.

In particular, the flow regulator of the present invention is characterized in that the locking means that can be fixed at the position where the roller 142 is set.

Specifically, as illustrated in FIG. 4, the flow regulator 140 includes a main body 141 having a pair of guide slots 141a formed in the longitudinal direction thereof, and a hinge shaft inserted into the guide slots 141a. 142a is provided and a roller 142 having a tooth 142b formed on an outer circumferential surface thereof, and a stopper 143b fixed to one side of a disk 143a that is rotatably coupled to the hinge shaft 142a, and is separated from the tooth 142b. ).

The stopper 143b has a constant elasticity and is decoupled from the teeth 142b of the roller 142. Therefore, the stopper 143b and the teeth 142b have to be operated only by operating the roller 142 with a predetermined size or more. As the bite is released, the roller 142 may be rotated.

The flow controller 140 configured as described above is moved by the elastic restoring force of the fluid tube, which is pressed and positioned between the main body 141 and the roller 142, so that the undesired flow rate change occurs. Can be prevented.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

Claims

A valve body having a first branch pipe and a second branch pipe arranged in a straight flow path, and a third branch pipe disposed perpendicular to the first branch pipe and the second branch pipe;

An operation knob provided in the valve body and configured to switch the flow path of each branch pipe by a rotation operation;

Three-way valve, characterized in that the guide body is provided on the upper and lower portions on the rotating surface in which the valve body and the operation knob is in contact with each other rotated relative to the flow path.
The three-way valve according to claim 1, wherein at least one branch pipe is formed with a thread for assembling the coupler and a positioning member for fitting the coupler with the coupler.
3. The three-way valve according to claim 2, wherein the branch pipe has the screw thread formed at an outer diameter and the outer tooth determining member formed at an inner diameter.
A drip chamber provided with an introduction needle fixed to a lead portion provided in the infusion container;

A fluid injecting part connected to the drip chamber and a fluid tube to inject fluid into the human body;

Includes; three-way valve provided in the fluid tube,

The three-way valve,

A valve body having a first branch pipe and a second branch pipe arranged in a straight flow path, and a third branch pipe disposed perpendicular to the first branch pipe and the second branch pipe;

An operation knob provided in the valve body and configured to switch the flow path of each branch pipe by a rotation operation;

An infusion set, characterized in that the valve body and the operation knob is in contact with each other is provided with a guide projection on the upper and lower portions based on the flow path to rotate the rotation is made.
The method according to claim 4, wherein the at least one branch pipe,

A socket in which one end of the infusion tube is fitted and the screw is assembled;

A fluid set further comprising a fluid tube joint assembly including a fixing ring for fixing the socket and the fluid tube while surrounding the outer circumferential surface of the fluid tube.
6. The infusion set according to claim 5, wherein the branch pipe is provided with a positioning member for fitting engagement with the socket.
The method of claim 4, wherein the drip chamber,

Chamber body;

A sealing cap having the introduction needle fixed thereto and fitted with an opening end of the chamber body;

And a retaining ring to fix the chamber body and the sealing cap while surrounding a portion of the outer circumferential surface of the chamber body.
According to claim 7, wherein the chamber body is formed with a fixed projection protruding in the radial direction at the open end, the sealing cap is provided with an engaging border for forming a groove in which the fixing projection of the chamber body is pressed set.
9. The infusion set of claim 8, wherein the sealing cap further comprises a skirt positioned inside the engaging border and extending longer than the engaging border.
10. The infusion set of claim 9, wherein the skirt is inserted into the chamber body and in surface contact with the inner circumferential surface.
11. The infusion set of claim 9 or 10, wherein the skirt is longer than the length of the retaining ring.
5. The apparatus of claim 4, further comprising: a main body having a pair of guide slots formed therein in the longitudinal direction;

A roller having a hinge shaft inserted into the guide slot and a tooth formed on an outer circumferential surface to press the fluid tube according to a linear movement;

The infusion set further comprises a flow controller including a stopper fixed to one side of the disk rotatably assembled to the hinge shaft and the teeth.