JPH10277161A - Injecting adapter for injection and withdrawal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a valve having a large bore and having a simple mechanism which has not been present in conventional injection and withdrawal, which has a simple structure, which can be surely and easily manipulated so as to be surely opened and closed even though no differential pressure between the inside and outside. SOLUTION: An adapter for injection and withdrawal is composed of a body 10 formed therein with a cavity 10B, having an opening 10A in its one surface and a connector connecting pipe 11 in its upper surface thereof, a plug 20 having a cover part 22 for closing the opening 10A of the body 10, an elastic tube 40 having a slit 41, and inserted and compressed in the cavity 10B, the connector connecting pipe 10 of the body 10 being inserted therein with a connector for injection and withdrawal liquid to be transferred or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adapter for injection and collection, and more particularly to an adapter for injection and collection for performing injection and collection of a fluid.

[0002]

2. Description of the Related Art Conventionally, as a mechanism or method for injecting another fluid into a certain fluid or extracting a part of a certain fluid, for example, (1) FIGS.
As shown in (a), (b) and (c), the main road 10 has holes 103a, 103b and 103c penetrating in three directions.
Cock 10 attached to intersection 102 between side 0 and bypass 101
3 is rotated by 90 °, 180 ° or 360 ° by the operation lever 104, and is rotated between the main roads 100 (FIG. 11B).
Alternatively, between the main road 100 and the side road 101 (FIG. 11A,
(C)) to open and inject or collect a fluid (for example, a three-way stopcock), (2) FIGS. 12 (a) and 12 (b)
As shown in (3), a mechanism for holding and deforming the side surface of the valve 110 and opening or closing the inner lid 111 closed by the pressure P to inject or collect fluid (for example, a valve for a floating ring or a beach ball), (3) 13) As shown in FIGS. 13A and 13B, the flange portion 124 of the plunger 122 is engaged with the inner wall 126 of the box 120 by the urging force of the spring 121 to form a valve 128. By pushing the tip 123 (forming the flow path) of the jar 122 with the end 125 of the fluid feeder 127, the spring 121 is compressed and the valve 128 is opened to inject or collect the fluid (for example, Rubber ring valves for bicycles, etc.), (4)
As shown in FIG. 14 (a), a relatively thick rubber portion 130 mounted between the main routes 131 and 132 is penetrated through a puncturing nozzle 133 to inject or collect a fluid as a valve to perform puncturing. After the nozzle 133 is pulled out, a method of closing the puncture hole by the elasticity of the rubber portion 130 (for example, an adapter for mixing and injecting for medical use) or as shown in FIG. Only two projections 135
A rubber lump 136 is inserted between A and 135B, and the rubber lump 136 is sealed and enclosed by a lid 137, and penetrates through the puncture nozzle 133 from the opening 134 of the lid 137 to the opening 139 of the main path 138. After the fluid is injected or collected and the puncture nozzle 133 is pulled out, the puncture hole is closed by the elasticity of the rubber mass 136 (for example, a soft rubber ball or the like), (5) FIGS. 15 (a) and 15 (b). As shown, the puncturing nozzle 14 with the silicone rubber 140 attached in the bypass
A mechanism for injecting or collecting fluid by pressing and opening the rubber 140 by the connection end 142 (the puncturing nozzle 141 has a side hole 146, is sealed by the silicone rubber 140, and has a female connector 143).
And the connection end 142 is connected to the syringe 14
4 and the piston 145 to form an infusion set).

[0003]

However, according to the conventional injection / collection mechanism or method, there are the following problems. (1) In the method shown in FIG. 10 and FIGS. 11A, 11B, and 11C, there is a possibility that the cock may be forgotten to be opened or closed at the time of operation. (2) In the mechanism shown in FIGS. 12A and 12B, an internal and external pressure difference is required to close the valve. (3) In the mechanism shown in FIGS. 13A and 13B, the internal flow path is complicated. (4) In the method shown in FIGS. 14 (a) and 14 (b), a relatively narrow nozzle is used, the flow path is narrow, the deterioration due to repetition is fast, and the compression of the rubber mass is performed to avoid leakage. Increasing the stab resistance increases. (5) In the mechanism shown in FIGS. 15A and 15B, the flow path inside the valve is complicated.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a relatively large flow path, a simple structure, a reliable and easy operation, and an injection / collection that can be opened and closed even when there is no pressure difference between inside and outside. To provide an adapter for

[0005]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a part of a transportation path in which an outer periphery is held by a shape holder (10) and a fluid for medical or other uses is transported. An elastic tube 40 having a vertical slit (41), and branching means (60, 70, 80) inserted into the slit (41) of the elastic tube (40) to branch the transport path. And compression applying means (20) for compressing the elastic tube (40) in the axial direction to prevent the fluid from leaking from the transport path to the outside through the slit (41). An adapter for injection and collection characterized by the following.

In the above configuration, the shape holder (1)
0) has a first connection port (11) having an inner diameter equal to the outer diameter of the elastic tubular body (40), into which the branching means (60, 70, 80) is inserted at a predetermined position; It is desirable to have a configuration having a second connection port (10A) connected to the compression applying means (20) by connection means such as welding, adhesion, screwing, fitting, and the like, and the first connection port (11) is provided with a packing insert. Having a cylindrical configuration having a step portion (11A) for
The branching means (70) includes a ring-shaped packing (7).
5) a tip (72) fitted on the outer periphery, a stopper (73) for stopping the insertion operation into the first connection port,
A concave groove (74) formed between the distal end (72) and the stopper (73), wherein when the distal end (72) is inserted into the first connection port (11), Step (1
1A) and the ring-shaped packing (75) is desirably compressed and fixed between the groove (74) and the first connection port (11) is provided with a step (11) for packing insertion.
A) has a cylindrical configuration having an upper portion, and the branching means (80) has a rear end (81) provided with a flared packing (83) on the outer periphery, and the branching means (80). 80)
It is preferable that when inserted into the first connection port (11), the tip (84) of the flared packing (83) is locked and compressed and fixed to the step (11A).

[0007]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 shows an injection and injection device according to an embodiment of the present invention.
An example in which the collection adapter is applied to a medical infusion route is shown. As shown in FIGS. 1 (a), (b) and (c),
The adapter for injection and collection has a main body 10 having a cavity (not shown) inside and an opening 10A on one surface, and a lid 22 having one end closing the opening 10A of the main body 10 and the other end. It comprises a tubular plug 20 having a screw portion 21 connected to an infusion tube (not shown), and a dustproof cap 30 for preventing dust or the like from entering the main body 10.

The main body 10 is provided with a connector connecting tube 11 for connecting a connector (described later) for injecting or collecting an infusion or the like, and an infusion tube connecting tube 12 for connecting to an infusion tube 50. Also, the main body 10
An elastic tube 40 having a slit 41 is compressed and sealed in the cavity inside the.

The dustproof cap 30 also serves as an auxiliary plug for preventing leakage, and is fitted into the connector connection tube 11. In addition, the outer periphery of the dustproof cap 30 is covered with a cap collar 3 over a half circumference.
2 are provided so that the dustproof cap 30 can be easily removed from the connector connection tube 11.

FIG. 2 shows a partial cross section of the injection / collection adapter. As shown in FIG.
The base 12A of 2 has an expanded tube diameter inside the main body 10,
One end of the elastic tube 40 is fitted into the groove 12a of the base 12A. In addition, the plug 20 has a smaller pipe diameter toward the lid 22 and is expanded at the distal end 20A.
A portion of the other end of the elastic tube 40 is engaged with the wall 22a of the lid portion 22 of the distal end portion 20A, and another portion of the other end of the elastic tube 40 is engaged with the lid portion 22 of the plug 20. And
When attaching the plug body 20 to the main body 10,
2b compresses in the axial direction. At the same time, plug 2
The cover portion 22 of the “0” is engaged with the opening 10A of the main body 10, and the engaged portion is joined by ultrasonic fusion. On the other hand, a step portion 11A
Is provided. When various connectors described later are inserted into the step portion 11A, packing of the connector and the like are locked.

FIG. 3 is an assembly view of the adapter for injection and collection. As shown in the figure, first, the elastic tube 40 is inserted into the cavity 10B in the main body 10 through the opening 10A of the main body 10.
Insert Although not shown, one end of the inserted elastic tube 40 is connected to the base 12A of the infusion tube connecting tube 12 described above.
Into the groove 12a. When one end of the elastic tube 40 is fitted into the groove 12a of the base 12A of the infusion tube connecting tube 12, the elastic tube 40 is arranged such that the position of the slit 41 is substantially at the center of the connector connecting tube 11. After confirming this arrangement from the connector connection tube 11, the plug 20 is attached to the main body 10. When the plug 20 is attached to the main body 10, the wall 22a and the tip 22b of the lid 22 of the plug 20 are formed.
The lid 22 of the plug 20 is engaged with the opening 10A of the main body 10 at the same time. The engaged portions are joined by ultrasonic fusion as described above. Thus, the assembly of the injection / collection adapter is completed.

FIG. 4 shows the appearance of the elastic tube 40 inserted into the cavity 10B of the main body 10. As shown in FIG. This elastic tube 4
As described above, the slit 41 is provided at 0 in a direction perpendicular to the axial direction. The slit 41 is for securing a flow path for infusion or the like to the connector connection pipe 11 and has a predetermined length L. If the length L of the slit 41 is too small, the flow path of the infusion and the like may be narrow, and if the length is too large, the infusion and the like may leak. It needs to be large. On the other hand, if the slit 41 is provided, there is naturally a problem that an infusion solution or the like leaks. Therefore, before the slit 41 is inserted into the cavity 10B, the length L of the slit 41 is increased, and the slit 41 is inserted into the main body 10 and compressed by the lid 22 of the plug 20. As described above, when the elastic tube 40 is compressed, the slit 41 comes into close contact, and when the connector is not connected, the pressure resistance of the elastic tube 40 is improved so that infusion or the like does not leak. The flow path of the infusion and the like can be sufficiently secured without leaking the infusion and the like in close contact with the outer periphery.

FIGS. 5A, 5B and 5C show the main body 10.
An example of a connector connected to the connector connection pipe 11 of FIG. In each figure, the left side shows the appearance of the connector, and the right side shows its cross section. In the connector 60 shown in FIG. 5A, the tube diameter of the front end portion 61 is formed in a tapered shape, and the tube diameter of the rear end portion 62 is formed constant. Further, the connector 70 shown in FIG. 5B is a connector having a fixed tube diameter, and has a large-diameter tube portion 71 and a small-diameter tube portion 72. An annular flange 73 is provided at the boundary between the large-diameter tube portion 71 and the small-diameter tube portion 72, and a concave groove 74 is provided on the small-diameter tube portion 72 side of the flange 73.
Is provided. A packing 75 is attached to the small-diameter tube portion 72. Connector 8 shown in FIG.
0 is the same as the connector 60 shown in FIG.
The pipe diameter of the front end portion 81 is formed in a tapered shape, the pipe diameter of the rear end portion 82 is formed to be constant, and a flared packing 83 is provided on the outer periphery of the rear end portion 82.

FIGS. 6 to 8 show the connectors 60 and 70.
And 80 are connected to the injection and collection adapter of the present invention. 6 (a) and 6 (b) show a state in which the connector 60 shown in FIG. 5 (a) is connected to the injection / collection adapter of the present invention, (a) shows a state at the time of connection, and (b)
Indicates the state after the connection is terminated. As shown in FIG. 6A, when the connector 60 is inserted into the connector connection tube 11, the distal end portion 61 of the connector 60 comes into contact with the elastic tube 40. When the connector 60 in contact with the elastic tube 40 is further pushed in the vertical direction, the distal end portion 61 of the connector 60 deforms the slit 41 of the elastic tube 40 and pushes it open as shown in FIG. At the same time, the rear end portion 62 of the connector 60 having no tapered portion is fitted with the connector connection tube 11 with a predetermined coefficient of static friction. Thereby, the connector 6
0 connection is completed.

FIGS. 7A and 7B show a state in which the connector 70 shown in FIG. 5B is connected to the injection / collection adapter of the present invention, and FIG. 7A shows a state at the time of connection. (B) shows a state after the connection is terminated. Although the description overlapping with FIG. 6 is omitted, in the connection using the connector 70, when the connector 70 is inserted into the connector connection tube 11, the packing 75 engages with the step 11A of the connector connection tube 11 and 11 to block the outside air pressure,
0 is further pushed in the vertical direction, the annular flange 73 of the connector 70 comes into contact with the step 11A, and the packing 75 is provided on the outer periphery of the flange 73 on the small-diameter tube 72 side. 6 in that they are connected to fit
And different.

FIGS. 8A and 8B show a state in which the connector 80 shown in FIG. 5C is connected to the injection / collection adapter of the present invention, and FIG. (B) shows a state after the connection is terminated. Although the description overlapping with FIG. 6 is omitted, in the connection using the connector 80, when the connector 80 is inserted into the connector connection tube 11, the tip end 84 of the flared packing 83 is locked to the step 11A, and the connector 80 Is further pressed in the vertical direction, the packing 83 is deformed, and the rear end portion 81 of the connector 40 having no tapered portion while blocking the external pressure by closing the connector connection tube 11 has a predetermined static friction with the connector connection tube 11. It differs from FIG. 6 in that it is connected so as to fit with a coefficient.

Note that the resistance at the time of connecting the connector can be adjusted while changing the pressure resistance of the elastic tube 40 as needed by changing the length by which the elastic tube 40 is compressed.

FIGS. 9 (a), 9 (b) and 9 (c) are conceptual diagrams showing another method of compressing and mounting the elastic tube 40 in the main body 10. FIG. FIG. 9A shows a method of compressing and mounting the elastic tube 40 using an adhesive. That is, an elastic tube engaging portion 90 that engages with the elastic tube 40 is formed between the lid portion 22 and the distal end portion 20A of the plug 20, and the elastic tube engaging portion 90 compresses the elastic tube 40,
An adhesive 91 is applied to a portion where the lid 22 and the opening 10A are engaged.
Is applied, and the elastic tube 40 is compressed and mounted. According to this method, the elastic tube 40 can be compression mounted at low cost.

FIG. 9 (b) shows a method of compressing and mounting the elastic tube 40 by using a projection-groove engagement mechanism. That is, an elastic tube engaging portion 90 that engages with the elastic tube 40 is formed between the lid portion 22 of the plug 20 and the distal end portion 20A,
Two annular projections 92 are provided on the outer periphery of the elastic tube engaging portion 90. On the other hand, two annular grooves 93 that engage with the annular projections 92 are provided near the opening 10A. When the plug 20 is pushed into the main body 10, the annular projection 92 and the annular groove 93 engage to join the main body 10 and the plug 20, and the elastic tube engaging portion 90 compresses the elastic tube 40 and attaches it. I do. According to this method, the compression mounting can be performed with one touch, so that the operation can be performed relatively easily.

FIG. 9C shows a method of compressing and mounting the elastic tube 40 using a screw mechanism. That is, the plug 20
A female screw-shaped ring 94 is provided on the outer periphery of the tip portion 20A of the
A male screw ring guide 9 for guiding the ring 94
5, the one end of the ring 94 compresses the elastic tube 40,
The plug 20 is screwed to the main body 10 to compress and attach the elastic tube 40. According to this method, the compression length of the elastic tube 40 can be easily changed.

As described above, the injection method of the present invention
Because the collection adapter has the above configuration,
The present invention can be applied not only to the medical infusion route described in the embodiment but also to a mechanism for injection / collection in any field for the purpose of injection / collection of other fluids.

[0023]

As described above, according to the injection / collection adapter of the present invention, the outer periphery is held by the shape holder, and a part of the transport path through which the fluid for medical or other uses is transported. An elastic pipe body having a vertical slit, a branching means inserted into the slit of the elastic pipe body to branch the transport path, and the elastic pipe body is compressed from the axial direction so that the fluid is transported through the slit. Or a compression applying means for preventing leakage from the transport path and the bypass to the outside, a relatively large flow path can be secured, and the operation is reliable and easy with a simple structure. It can be opened and closed even when there is no pressure difference between inside and outside.

[Brief description of the drawings]

FIG. 1 shows an adapter for injection and collection according to an embodiment of the present invention, wherein (a) is a front view, (b) is a plan view, and (c).
Is a side view.

FIG. 2 is a partial cross-sectional view of the injection / collection adapter according to the embodiment of the present invention.

FIG. 3 is an assembly view of an injection / collection adapter according to the embodiment of the present invention.

FIG. 4 is an external view of an elastic tube that is compressed and inserted into a main body.

FIGS. 5A, 5B, and 5C are diagrams showing examples of various connectors inserted into a connector connection pipe of a main body.

FIG. 6 is a view showing a state where the connector shown in FIG. 5A is connected to a main body.

FIG. 7 is a view showing a state where the connector shown in FIG. 5B is connected to a main body.

8 is a diagram showing a state in which the connector shown in FIG. 5C is connected to a main body.

FIG. 9 is a view showing another method of compressing and mounting an elastic tube, wherein (a) shows a method of compressing and mounting by elastic bonding;
(B) shows a method of compressing and mounting using an engagement mechanism of a projection and a groove, and (c) shows a method of compressing and mounting using a screw mechanism.

FIG. 10 is a diagram showing an example of a conventional injection / collection mechanism or method.

11 is a diagram showing a state in which the rotation of the cock in FIG. 10 opens between the main roads or between the main road and the side roads.

FIG. 12 is a diagram showing an example of a conventional injection / collection mechanism or method.

FIG. 13 is a diagram showing an example of a conventional injection / collection mechanism or method.

FIG. 14 is a diagram showing an example of a conventional injection / collection mechanism or method.

FIG. 15 is a diagram showing an example of a conventional injection / collection mechanism or method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Main body 10A Opening 10B cavity 11 Connector connection pipe 11A Step part 12 Infusion tube connection pipe 12A Base 12a Groove 20 Plug body 20A Plug tip 21 Screw 22 Cover 22a Wall 22b Tip 30 Dustproof cap 31 Bend arm 32 Dustproof cap 40 Elastic tube 41 Slit 50 Infusion tube 60 Connector 61 Connector tip 62 Connector rear end 70 Connector 71 Large-diameter pipe 72 Small-diameter pipe 73 Flange 74 Recessed groove 75 Ring packing 80 Connector 81 Connector tip Part 82 connector rear end part 83 flared packing 84 tip of flared packing 90 elastic tube engaging part 91 adhesive 92 annular projection 93 annular groove 94 ring 95 ring guide

Claims (4)

[Claims] An elastic tube having a vertical slit (41), the outer periphery of which is held by a shape holder (10) and constitutes a part of a transport path for transporting a fluid for medical or other uses. And a branching means (60, 70, 8) inserted into the slit (41) of the elastic tube (40) to branch the transport path.
0) and compression applying means (20) for compressing the elastic tube (40) in the axial direction to prevent the fluid from leaking from the transport path to the outside through the slit (41). An adapter for injection and collection, characterized in that: 2. The shape retainer (10) has an inner diameter equal to the outer diameter of the elastic tube (40), and the branch means (60, 70, 80) is inserted at a predetermined position. 2. The structure according to claim 1, further comprising a first connection port and a second connection port connected to the compression applying means by welding, bonding, screwing, fitting, or the like. 3. Adapter for injection and collection of 3. The first connection port (11) has a cylindrical structure having a step (11A) for packing insertion at an upper part thereof, and the branching means (70) is provided with a ring-shaped packing. (7
5) is a tip (72) fitted around the outer periphery, and a stopper (7) for stopping the insertion operation into the first connection port (11).
3) and a concave groove (74) formed between the tip (72) and the stopper (73), wherein the tip (72) is inserted into the first connection port (11). The injection / collecting adapter according to claim 1 or 2, wherein the ring-shaped packing (75) is compressed and fixed between the step (11A) and the concave groove (74) when the ring is closed. 4. The first connection port (11) has a cylindrical configuration having a step (11A) for packing insertion at an upper part thereof, and the branching means (80) has an elastic tip 84. A flared packing (83) having a rear end portion (81) provided on the outer periphery thereof; and the step portion when the branching means (80) is inserted into the first connection port (11). The injection / collection adapter according to claim 1 or 2, wherein the tip (84) of the flared packing (83) is locked and compressed and fixed to the (11A).