JP2001299906A - Connector assembly - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a medical male connector and female connector assembly capable of quickly performing the fixation and release of a connection part and reducing the uncomfortable feeling to a patient. SOLUTION: This connector assembly comprises a male connector 32 having a connecting member 39 circumferentially protruded extending from a fluid passage member base end part 34 to the vicinity of the central part and a female connector 31 having a connecting member 40 circumferentially protruded ahead from a fluid passage member tip part 39, and the protruded part has an opening. Both the connectors are mutually connectable by inserting the connecting member of the male connector to the connecting member opening part of the female connector. The connecting member of the female connector has an engagement part of the inner surface of its opening part with the outer surface of the male connector connecting member, and the engaging state of the female connector connecting member with the male connector connecting part can be released by pressing the part except the engagement part of the female connector.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock-type male connector and a female connector assembly used for a connection portion of a circuit for infusion, blood transfusion, tube feeding, dialysis, artificial lung, and the like.

[0002]

2. Description of the Related Art In medical treatments such as infusion, blood transfusion, tube feeding, dialysis, and artificial lung, various medical instruments such as a catheter, an infusion tube, a needle, a three-way cock, and a filter are connected when forming these circuits. To complete. A luer connector with a luer taper, which has a substantially common standard for connecting such various medical devices, is often used.

[0003] The types of luer connectors that have become widespread in the connection portion of medical instruments are roughly classified into a male connector and a female connector with a taper called a slip type, and are fixed only by frictional fitting of the taper. And a screw lock type, in which a screw cap attached to the male connector is screwed into the edge claw of the female connector after connection, and fixed by rotating operation.
There are types.

[0004] However, since the connection force is not strong in the slip type, if an unreasonable force is applied to a part of the circuit in which the connector is incorporated, the connection portion may be disconnected.

[0005] Further, if the slip type connector is fixed to the skin surface of the patient with tape or the like for a long time, the nails of the female connector may hit the skin surface to press the patient or cause abrasion. was there.

[0006] On the other hand, a screw-type lock type connector has a strong connection force, but requires a rotating operation such as screwing at the time of engagement, so that a medical worker is more troublesome than a slip type connector. . The same was true when the engagement was released.

[0007] Further, since the cross-sectional diameter of the connection portion at the time of connection becomes large, when the screw-type lock type connector is fixed to the patient with tape for a long time, the slip-type connector is fixed to the patient as compared with when the slip type connector is fixed to the patient. The increased compression has increased the chances of skin damage occurring due to the increased compression. In addition, the movement of the patient may increase the friction between the skin and the connector, causing abrasion and giving the patient discomfort. Furthermore, depending on the nutritional status of the patient, it may be thought that it may cause pressure ulcers and the like.

As measures for improving these, Japanese Patent Application Laid-Open No. Hei 8-1035
As shown in Fig. 04, the pressure on the skin surface is reduced by making the edge claw of the female connector a smooth taper, and the slip type and screw type lock type can be used together as in JP-A-7-148271. As described above, a type in which a screw type cap portion is detachable in a lock nut type is disclosed.

However, even if the edge claw portion has a smooth taper as disclosed in Japanese Patent Application Laid-Open No. 8-103504, it is effective at the time of connection of the slip type connector. Further, when connecting with the screw-type lock type, the diameter of the cross section of the connection portion is increased by the screw cap, so that pain and damage due to pressure on the patient eventually increase. Furthermore, the screw lock requires a rotation operation, which is troublesome.

[0010] Further, as in Japanese Patent Application Laid-Open No. Hei 7-148271, the operation of switching between the slip type and the screw type lock type is a lock nut type, so that the operation is troublesome. Also, since the cross-sectional diameter of the connection part is also large because the connection method is also fixed by the screw lock, it is possible to increase the pressure on the patient, and as described above, the connection and release operation by the screw type is performed by a medical It was troublesome for.

[0011]

SUMMARY OF THE INVENTION An object of the present invention is to provide an easy connection with a connecting portion fixing mechanism, and even if it is fixed to a patient's skin with a tape or the like, it is not possible for the patient. An object of the present invention is to provide a male connector for medical use and a female connector assembly that do not give a pleasant feeling.

[0012]

Means for Solving the Problems In order to solve the above problems, the present invention has the following arrangement. (1) A male connector having a fluid passage member and having a connection member protruding in an outer peripheral direction from a base end portion of the fluid passage member to the vicinity of a central portion; and a fluid passage member having a fluid passage member. A female connector provided with a connecting member having an opening, the female connector having a connecting member having an opening, and the connecting member of the male connector being connected to the female connector; It can be connected by inserting it into the connection member opening of the connector,
The connection member has a specific shape, and includes at least one engagement portion that engages with an inner surface of an opening of the female connector connection member and a corresponding outer surface of the male connector connection member. By pressing a portion of the female connector other than the engagement portion, the engagement portion of the female connector is deformed, and the connection between the female connector connection portion and the male connector connection portion is deformed. A medical male connector and a female connector assembly, characterized in that the mated state can be released. (2) The medical male connector and the female connector assembly according to (1), wherein a cross-sectional shape of the connection member is a flat shape. (3) The medical male connector and the female connector assembly according to (1) and (2), wherein the cross-sectional shape of the connection member is polygonal. (4) The medical male connector and the female connector assembly according to (1) and (2), wherein the cross-sectional shape of the connection member is elliptical or semicircular. (5) One of the engaging portions that engages with the inner surface of the opening of the female connector connecting member and the corresponding outer surface of the male connector connecting member has a concave engaging portion, and the other has a convex engaging portion. The medical male connector and the female connector assembly according to any one of (1) to (4), wherein the connection state can be fixed by the fitting having the engagement portion. (6) The engaging portion that engages with the inner surface of the opening of the female connector connecting member and the corresponding outer surface of the male connector connecting member is a claw provided on at least one side, and includes a claw. The medical male connector and the female connector assembly according to any one of (1) to (5), wherein the connection state can be fixed by engaging the part with the other. (7) The medical male connector and the female connector assembly according to (6), wherein the claw portion has a tapered surface in a connection direction.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. It should be noted that the figures used below are merely examples, and do not limit the present invention.

FIG. 15 shows a male connector 32 of the present invention.
FIG. 2 is an overall view before connection between the connector and the female connector 31.

The male connector 32 includes a connecting member 39 that projects from the base end portion 36 of the fluid passage member 34 toward the distal end and toward the center of the fluid passage member 34 toward the outer periphery of the fluid passage member 34. .

The female connector 31 protrudes from the distal end portion 38 of the fluid passage member 33 in the outer peripheral direction, and the protruding portion extends to the distal end to form an opening. It has a connecting member 40 which serves as an opening for receiving 39.

Next, FIG. 16 is an overall view after the male connector 32 and the female connector 31 of the present invention are connected.

In FIG. 16, the connection member 39 of the male connector 32 is connected by being inserted into the opening of the connection member 40 of the female connector 31.

At this time, the engaging portion 41 on the inner surface of the opening of the connecting member 40 and the engaging portion 42 on the outer surface of the connecting member 39 are engaged to form a fixing mechanism, and the connecting member 40 and the connecting member 39 are fixed. Is done. As described above, the connection portion is fixed by simply inserting the connection member 39 into the opening of the connection member 40.

It is sufficient that at least one of the engaging portions 41 and 42 is provided, and there is no problem even if a plurality of engaging portions 41 and 42 are provided as long as the function is not impaired. Preferably, from two to six, the function is sufficiently achieved.

In order to release the engaged state, as shown in FIG. 16, by pressing a part other than the engaging parts 41 and 42, the engaging part 41 is deformed to be in the released state.

Hereinafter, the present invention will be described with reference to a male connector and a female connector assembly having a tubular body at the other end of the connection portion, which is one of the specific embodiments. It is not limited.

As shown in FIGS. 1, 2, 3 and 4,
At the base end of the female connector tubular body 1, there is a luer taper part for slip-type fitting having a Luer taper outer surface 2 and a Luer taper inner surface 3, and at the rear end, the cross section of the outer surface and the lumen surface 4 has a flat shape. There is a female luer connector provided with a connecting member 40.

On the other hand, as shown in FIG. 5, FIG. 6, FIG. 7, and FIG. 8, the male connector tubular body 11 has a base end portion which can be connected to the flat fixing portion of the female connector. A flat connection member 39 is provided, and a male luer connector having a luer taper portion for slip-type fitting having a luer taper outer surface 8 is provided at the distal end thereof.

The female luer connector and the male luer connector can be joined by slip fitting at the luer taper portion, and the connection state can be maintained by the flat connection members 39 and 40. By pressing the left and right opening portions 6 of the female connector, the lumen surface 4 of the female connector connecting member 40 is deformed up and down, so that the connection state can be easily released.

Here, the fixing mechanism only needs to be able to fix and maintain the connection state of the male connector and the female connector assembly, and the release mechanism only needs to be able to release the fixed state. However, it is more preferable that the mechanism can be easily fixed and maintained and can be easily released as shown in FIGS. 9, 10, 11, and 12. 9, 10, 11, and 12 are examples in which the engaging portions 7 and 10 are provided.
The installation method and the like are not particularly limited as long as the connection state is fixed and can be released.

In the present invention, the flat connection member 3
The cross-sectional shape of 9, 40 may be a flat shape, and may be a polygon such as a triangle, a square, a pentagon, or a hexagon, an ellipse, a semicircle, or a crescent. It is more preferable that the shape is such that stress is not concentrated and pressure is not applied when fixing to a surface.

Further, each part will be described together with the operation method of the present invention.

First, the procedure for connecting the male connector and the female connector is as follows. As shown in FIG. 9, the luer taper of the male connector of the present invention is inserted into the luer taper of the female connector of the present invention. Slip fit. Next, as shown in FIG. 10, when the fixing concave portion 10 on the outer surface of the male connector connecting member reaches the fixing convex portion 7 on the opening end of the inner surface of the female connector connecting member, the upper and lower pressing surface portions of the female connector. By pressing 5, the fixing convex portion 7 and the fixing concave portion 10 are fitted to each other, whereby the connection state is fixed, and the connection between the female connector and the male connector is completed.

Subsequently, the procedure for disconnecting the male connector and the female connector circuit is as follows. As shown in FIG. 11, pressing the left and right pressing surfaces 6 of the female connector deforms the lumen surface 4 of the female connector up and down. Since the concave and convex fitting is released and the connection fixed state is released, the circuit connection can be released by pulling the male connector and the female connector as shown in FIG.

In the attached drawings, a convex portion is provided on the inner surface of the female connector connecting member, and a concave engaging portion is provided on the outer surface of the male connector connecting member. You are not bound by this. For example, a configuration may be employed in which a concave portion is provided on the inner surface of the female connector connecting member and a convex engaging portion is provided on the outer surface of the male connector connecting member.

Although not shown, the engagement portion may be engaged by a claw portion instead of the concave / convex engagement of the engagement portion. In this case, a method may be used in which claws are provided at corresponding positions on the inner surface of the female connector connecting member and the outer surface of the male connector connecting member, and the claws are fitted with the claws. A configuration in which a claw portion is provided on one of the cavity surface and the outer surface of the male connector connection member, and a groove or the like that can receive the claw is provided on the other side, and fitting with the claw and the groove may be employed.

As shown in FIG. 17, when the claw portion 20 has a tapered portion 21 whose surface in the connection direction is tapered, resistance at the time of connection is reduced, and connection becomes easier.

The material of the fixing means and the releasing means may be elastic or non-elastic. For example, as an example of an elastic body
Olefin-based elastomers and styrene-based elastomers such as 1,2-polybutadiene, and urethane resins, polyethylene, polypropylene, nylon resins, silicone resins, polyvinyl chloride resins, natural rubbers, and the like, as well as mixtures and derivatives thereof, Without being limited to these, examples of the inelastic body include engineering plastics such as polysulfone, polyether sulfone, polycarbonate, and polyimide, but are not limited thereto.

In FIG. 9, as a female connector, the tubular body 1 is made of, for example, urethane resin and is formed by extrusion.
A flexible tube body having an outer diameter of 5 mm to 0.3 mm and a wall thickness of 2 mm to 0.08 mm, the base end of which is connected to the luer-shaped portion 2 of the female connector.

The material of the tubular member is preferably a flexible one. For example, polyvinyl chloride resin, polyurethane elastomer, polyamide elastomer, silicone resin, latex rubber, natural rubber, polyethylene,
Polypropylene and their derivatives and the like,
It is not limited to these.

The female connector is formed by injection molding of, for example, polypropylene or the like, and the size of the luer-shaped portion 2 of the female connector has a lumen surface of a Luer taper size conforming to ISO594-1.

At the end of the lure-shaped portion 2, there is a flat fixing / releasing mechanism, and at the upper and lower surfaces at the open end, connection fixing protrusions 7 are provided. There is a compression unit 5 and left and right release compression units 6 are provided on the left and right outer surfaces.

Here, the total length from the base end to the open end of the luer-shaped portion of the female connector is, for example, 7 mm to 40 mm.
mm, and more preferably 8 mm to 30 mm in total length. The length from the base end side to the opening end side of the fixing / releasing mechanism is 3 mm to 30 mm, and more preferably 5 mm to 20 mm.

The width of the fixing / releasing mechanism in the horizontal direction is, for example, 5 mm to 30 mm, and more preferably 7 mm to 20 m.
m is more preferable. Vertical width is 5mm ~ 25
mm, and more preferably 7 mm to 15 mm.

On the other hand, the tubular body 11 for a male connector is made of, for example, polyvinyl chloride resin and is formed by extrusion.
For example, outer diameter 8 mm to 0.8 mm, wall thickness 2 mm to 0.08
mm flexible tube body, the base end of which is provided with a male connector fixing / releasing mechanism, and the connection fixing concave body 10 is provided on the upper and lower outer surfaces near the base end. Left and right chamfers 9 are provided on the left and right outer surfaces. Further, a luer-shaped outer surface 8 is provided on the base end side of the fixing / releasing mechanism, and the size of the lure-shaped portion is IS
It has an outer surface of luer taper size based on O594-1.

The size of the male connector differs according to the size of the female connector. The total length of the luer-shaped portion is, for example, 3 mm to 35 mm, and furthermore, the total length is 5 mm to 30 mm.
mm is more preferable. Further, the length from the base end side to the opening end side of the fixing / releasing mechanism is 3 mm to 30 mm,
More preferably, it is 5 mm to 20 mm. The horizontal width of the fixing / releasing mechanism of the male connector is, for example, 4 mm to 28 mm, and more preferably 6 mm to 1 mm.
8 mm is more preferable. The vertical width is 4mm ~
23 mm, more preferably 6 mm to 13 mm.

The material of the female connector and the male connector may be elastic or non-elastic. For example, examples of the elastic body include olefin-based elastomers such as 1,2-polybutadiene and styrene-based elastomers, urethane resins, polyethylene, polypropylene, nylon resins, silicone resins, polyvinyl chloride resins, natural rubbers, and mixtures thereof. And derivatives may be used, but are not limited thereto, and examples of inelastic materials include polysulfone, polyether sulfone, polycarbonate,
Examples include, but are not limited to, engineering plastics such as polyimide.

As described above, the present invention does not have the fixing claw edge 16 as compared with the conventional slip type luer connector shown in FIG. Without any discomfort,
It enables the connection part to be firmly fixed.

Further, unlike the conventional screw-type lock type luer connector which requires the rotation operation at the time of connection shown in FIG. 14, since the rotation operation at the time of connecting the male connector and the female connector is unnecessary, quick connection is possible. Is possible. Furthermore, since the engaging portion of the present invention does not exist on the outer surface of the female connector, the appearance at the time of connection does not change, and since the flat portion has a cross-sectional shape of the connecting portion, stress is not concentrated, so that the tape is applied to the patient. The patient does not feel uncomfortable even when fixed.

The present invention can be used for connecting parts of all medical instruments.

[0047]

According to the present invention, the connection portion can be quickly fixed and released, and further, the discomfort to the patient can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view of a female connector of the present invention.

FIG. 2 is a rear view of the female connector of the present invention.

FIG. 3 is a top view of the female connector of the present invention.

FIG. 4 is a side view of the female connector of the present invention.

FIG. 5 is a front view of the male connector of the present invention.

FIG. 6 is a rear view of the male connector of the present invention.

FIG. 7 is a top view of the male connector of the present invention.

FIG. 8 is a side view of the male connector of the present invention.

FIG. 9 is a perspective view showing a connection mechanism between the female connector and the male connector of the present invention.

FIG. 10 is a perspective view showing a simple fixing mechanism of the female connector and the male connector of the present invention.

FIG. 11 is a perspective view showing a simple release mechanism of the female connector and the male connector of the present invention.

FIG. 12 is a perspective view showing a mechanism for removing the female connector and the male connector of the present invention.

FIG. 13 is a perspective view showing a connection mechanism of a conventional luer type connector.

FIG. 14 is a perspective view showing a connection and fixing mechanism using a screw-type fixing device for fixing a conventional luer type connector.

FIG. 15 is a perspective view showing the whole of the present invention before connection.

FIG. 16 is a perspective view showing the whole after connection according to the present invention.

FIG. 17 is an enlarged view showing an example of the engaging portion of the present invention.

[Explanation of symbols]

 1 Tubular body for female connector 2 Luer-like outer surface of female connector 3 Luer-like lumen of female connector 4 Lumen for fixing female connector 5 Compression part for fixing female connector up and down 6 Compression for releasing female connector left and right Part 7 Female connector vertical fixing convex part 8 Male connector luer-shaped outer surface part 9 Male connector left and right chamfered part 10 Male connector vertical fixing concave part 11 Male connector tubular body 12 Male connector upper and lower chamfered part 13 Female type Tubular body for luer connector 14 Female luer connector outer surface 15 Female luer connector inner cavity 16 Female luer connector fixing edge claw 17 Male luer connector outer surface 18 Male luer connector tubular body 19 Male luer connector Screw-type fixing tool 20 Claw 21 Taper 2 Female connector connection member lumen surface 23 Connection direction 31 Female connector body 32 Male connector body 33 Female connector fluid passage member 34 Male connector fluid passage member 36 Male connector fluid passage member base end 38 Female connector Fluid passage member tip 39 Male connector connecting member 40 Female connector connecting member 41 Female connector engaging portion 42 Male connector engaging portion

Claims (7)

[Claims] A male connector having a fluid passage member, a connecting member protruding from a base end of the fluid passage member to an outer peripheral direction around a center portion, and a fluid passage member;
A female connector provided with a connecting member having an opening, the female connector including a connecting member having an opening, and protruding outward in a direction extending further from the distal end portion of the fluid passage member to the distal end; Can be connected by inserting the female connector into the connection member opening of the female connector, the connection member has a specific shape, the inner surface of the opening of the female connector connection member, the corresponding corresponding The female connector has at least one engagement portion that engages with an outer surface of the connector connection member, and presses a portion other than the engagement portion of the female connector to deform the engagement portion of the female connector. Wherein the engagement state between the female connector connecting portion and the male connector connecting portion can be released. Restrictor assembly. 2. A medical male connector and a female connector assembly according to claim 1, wherein the connecting member has a flat cross section. 3. The medical male connector and female connector assembly according to claim 1, wherein the cross-sectional shape of the connection member is polygonal. 4. The medical male and female connector assembly according to claim 1, wherein the cross-sectional shape of the connection member is elliptical or semicircular. 5. An engaging portion for engaging the inner surface of the opening of the female connector connecting member and the corresponding outer surface of the male connector connecting member, one of which is a concave engaging portion and the other is a convex. The medical male connector and the female connector assembly according to any one of claims 1 to 4, wherein the connection state can be fixed by fitting with the engaging portions of the portions. 6. An engaging portion which engages with an inner surface of an opening of said female connector connecting member and an outer surface of said male connector connecting member corresponding thereto is a claw provided on at least one side. The medical male connector and the female connector assembly according to any one of claims 1 to 5, wherein the connection state can be fixed by engaging the claw portion with the other. 7. The medical male and female connector assembly according to claim 6, wherein said claw portion has a tapered surface in a connection direction.