JP2014100347A - Male connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent occurrence of inconveniences caused by a deposit on a lock part in a male connector which has a lock part and is connected to a downstream side of a female connector.SOLUTION: A male connector 1 includes a male side connection tube 6 and a lock part 7. The male side connection tube 6 includes a conical outer face 9 which is fit to a conical inner face 8 of a female connector 4 to establish the connection to the female connector 4. The lock part 7 has a cylindrical inner wall 11 with an opened front end side. A female screw 13 which is screwed with a male screw 12 of the female connector 4 for locking the connection to the female connector 4 is provided on the cylindrical inner wall 11. A through-hole 14 and a slit groove 22 for discharging a deposit on the inner wall 11 are provided on the lock part 7.

Description

  The present invention is a male connector with a lock portion attached to a downstream infusion tube, and is connected to a female connector attached to an upstream infusion tube to connect the upstream and downstream infusion tubes. For things.

  Conventionally, as a connector for connecting an infusion tube such as an enteral nutrition administration set and an infusion tube such as an enteral feeding catheter on the downstream side (patient side), a male connector attached to the upstream infusion tube, A device provided with a female connector attached to an infusion tube on the downstream side is widely used in general (for example, see Patent Document 1).

JP 2002-200145 A

  By the way, the international standard regarding the connector of an enteral feeding catheter is expected to be newly set. According to this new standard, it is expected that a male connector having a lock portion provided with a female screw for locking will be adopted as a connector attached to an enteral feeding catheter on the downstream side (patient side).

  That is, conventionally, as described above, the female connector is used on the downstream side and the male connector is used on the upstream side, whereas the use of the male connector and the female connector is reversed according to the new standard. Further, unlike the conventional case, a lock portion having a female screw for locking is also provided on the downstream side.

  For this reason, according to the male connector of the new standard, when connecting to the female connector or releasing the connection, the nutrients flow down from the upstream female connector and easily enter the lock portion of the male connector. . Further, the invading nutrients or the like adhere to the female screw portion of the lock portion, making it difficult to discharge. If such deposits accumulate on the female screw portion, there is a risk of hindering the connection between the male connector and the female connector.

  An object of the present invention is to prevent the occurrence of inconvenience due to deposits on a lock part in a male connector with a lock part connected to the downstream side of the female connector, in view of the problems of the prior art.

  The male connector of the present invention is a male connector that is provided in a downstream infusion pipe and is connected to a female connector of an upstream infusion pipe to connect the downstream infusion pipe and the upstream infusion pipe. A male connection pipe connected to the female connector and a lock portion provided on an outer periphery of the male connection pipe, and the male connection pipe is fitted to a corresponding conical inner surface of the female connector. A conical outer surface for establishing a connection with the female connector on the front end side, and the locking portion has a cylindrical inner wall whose rear end side is fixed to the male side connecting pipe and whose front end side is open, and the outer periphery of the conical outer surface. The cylindrical inner wall is provided with a female screw that is screwed with a corresponding male screw of the female connector to fix the connection with the female connector, and the lock portion has the cylindrical shape. Adhesion to discharge the deposit on the inner wall Characterized in that the discharge means are provided.

  In the present invention, when the downstream infusion pipe and the upstream infusion pipe are connected, the male outer thread of the male connector and the male thread of the female connector are fitted while the outer conical surface of the male connector and the inner conical surface of the female connector are fitted together. Is concluded. By this fitting, the male connector and the female connector are connected. Further, this connection is fixed (locked) by fastening the female screw and the male screw. This connection and fixation establishes a connection between the downstream infusion tube and the upstream infusion tube.

  When such a male connector and a female connector are connected or when the connection is released, a drug or the like flows down from the upstream female connector and easily enters the lock portion of the male connector. There is a possibility that the invading medicine or the like adheres to the female screw of the lock portion. If such deposits accumulate on the female screw portion, it may hinder the fastening between the female screw of the male connector and the male screw of the female connector, and it may be difficult to fasten or be easily unfastened.

  In this regard, in the present invention, the lock portion includes the deposit discharge means for discharging the deposit on the inner wall, and therefore the deposit on the inner wall of the lock portion can be easily removed to the outside through the deposit discharge means. Can be discharged. Thereby, it can prevent that a connection produces with a male connector and a female connector with a deposit | attachment.

  In addition, the male connector of this invention is implemented as a disposable product discarded after one use. Therefore, the discharge of the deposits on the lock portion is performed when the male connector is used once, and is not performed for repeatedly reusing the male connector.

  In this invention, the said deposit | attachment discharge | emission means may be provided with the through-hole penetrated from the cylindrical inner wall of the said lock | rock part to the outer wall. According to this, the deposits on the inner wall of the lock portion can be easily discharged from the through hole to the outside using a water flow or an appropriate tool.

  In this invention, the said deposit | attachment discharge | release means may be equipped with the slit groove | channel extended from the rear-end part to the front end in the cylindrical inner wall of the said lock | rock part. According to this, by tilting the male connector so that the front end side of the slit groove is positioned below, the deposits on the inner wall of the lock portion can be easily discharged to the outside through the slit groove.

  In the present invention, the through hole may be a slit hole extending from the rear end side to the front end side of the cylindrical inner wall of the lock portion. According to this, the deposits on the inner wall of the lock portion can be easily discharged to the outside from the slit hole using a water flow or an appropriate tool.

It is a figure which shows a mode that the male connector and female connector which concern on 1st Embodiment of this invention are connected. It is sectional drawing of the male connector of FIG. It is a front view of the male connector which concerns on 2nd Embodiment of this invention. It is a front view of the male connector which concerns on 3rd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a state in which a male connector and a female connector according to the first embodiment of the present invention are connected. As shown in FIG. 1, the male connector 1 according to the first embodiment of the present invention is provided in an infusion pipe 2 on the downstream side. The male connector 1 is used to connect the infusion tubes 2 and 3 by connecting with the female connector 4 attached to the infusion tube 3 on the upstream side.

  Infusion tubes 2 and 3 are used for administration of drugs and nutrients to patients, for example. As the infusion tube 2 and the infusion tube 3, for example, an enteral feeding catheter used for enteral nutrition therapy or a tube of an enteral feeding set corresponds to this. The male connector 1 can be used as a male connector on the enteral feeding catheter side in accordance with the international standard regarding the enteral feeding catheter connector that is expected to be newly set.

  In the following description, regarding the male connector 1, “front end” and “rear end” mean the connection direction to the female connector 4 and the opposite direction end, respectively, and regarding the female connector 4, “front end” and “ The “rear end” means the end of the connection direction to the male connector 1 and the opposite direction.

  FIG. 2 is a cross-sectional view of the male connector of FIG. As shown in FIG. 2, the male connector 1 includes a male connection tube 6 that can be connected to the female connection tube 5 of the female connector 4, and a lock portion 7 provided on the outer periphery of the male connection tube 6.

  The male side connecting pipe 6 is provided with a conical outer surface 9 on the front end side for fitting with a corresponding conical inner surface 8 (see FIG. 1) of the female connector 4 to establish the connection when the male connector pipe 6 is connected to the female connector 4. The diameter of the conical outer surface 9 gradually decreases toward the front end of the male connection pipe 6.

  The end portion of the downstream infusion tube 2 (see FIG. 1) is inserted into and fixed to the inner wall 10 on the rear end side of the male connection tube 6. On the outer periphery of the rear end side of the male side connecting pipe 6, ribs 6 a as ridges along the axial direction of the male side connecting pipe 6 are provided for the convenience of connecting the male connector 1 and the female connector 4. It is done.

  The lock portion 7 includes a cylindrical inner wall 11 that is fixed to the middle portion of the male connection pipe 6 on the rear end side and is open on the front end side on the outer periphery of the outer cone surface 9. A female screw 13 for fixing (locking) the connection between the male connector 1 and the female connector 4 by screwing into the corresponding male screw 12 (see FIG. 1) of the female connector 4 is formed on the cylindrical inner wall 11. Provided. Further, the lock portion 7 is provided with a through hole 14 penetrating from the cylindrical inner wall 11 to the outer wall. The through hole 14 functions as a deposit discharge means in the present invention, and is used to discharge deposits on the inner wall 11.

  The position of the through hole 14 is preferably a position in the vicinity of the rear end of the inner wall 11 so that the deposits can be easily discharged while securing the function as the lock portion 7. As the shape of the through hole 14, for example, a rectangular shape whose longitudinal direction is along the circumferential direction of the inner wall 11 can be adopted so that the attached matter can be easily discharged.

  The size of the through-hole 14 is preferably larger from the viewpoint of easy discharge of deposits, but in order to ensure the necessary functions and strength as the lock portion 7, an appropriate size that does not become excessive is adopted. It is preferable to do this.

  In this configuration, when the downstream infusion tube 2 and the upstream infusion tube 3 are connected, the conical outer surface 9 of the male connector 1 provided in the infusion tube 2 and the female connector provided in the infusion tube 3 Four conical inner surfaces 8 are fitted. In parallel with this, the female screw 13 of the male connector 1 and the male screw 12 of the female connector 4 are fastened.

  At this time, the male connector 1 and the female connector 4 are connected by the fitting of the conical outer surface 9 and the conical inner surface 8. In addition, this connection is fixed (locked) by fastening the female screw 13 and the male screw 12. Thereby, the connection between the downstream infusion tube 2 and the upstream infusion tube 3 is established.

  However, when the male connector 1 and the female connector 4 are connected to each other or when the connection is released, a drug or the like flows down from the upstream female connector 4 and easily enters the lock portion 7 of the male connector 1. . The use of the male connector 1 and the female connector 4 is reversed from the conventional case where the female connector and the male connector are used on the downstream side and the upstream side, respectively, and the male connector 1 on the downstream side has a female screw 13. This is because the lock portion 7 is provided.

  The drug or the like that has entered the lock unit 7 may adhere to the female screw 13 portion of the lock unit 7. If such deposits accumulate on the female screw 13 portion, it hinders the fastening of the female screw 13 of the male connector 1 and the male screw 12 of the female connector 4, and it becomes difficult to connect the male connector 1 and the female connector 4. There is a risk that it may be easily removed. Moreover, since the deposit | attachment has adhered to the clearance gap between the inner wall 11 of the lock | rock part 7, and the cone outer surface 9, it is difficult to remove.

  Conventionally, the locking female screw is present in the upstream male connector, and the downstream female connector has only a corresponding male screw. It is difficult and the deposit can be easily removed, so that the deposit does not cause a problem.

  In view of this point, according to the present embodiment, the lock portion 7 includes the through hole 14 for discharging the deposits on the inside thereof, so that the attachment in the lock portion 7 can be achieved by using a water flow or an appropriate tool. A kimono can be easily discharged | emitted from the through-hole 14 outside as needed. By appropriately applying this measure as necessary, it is possible to prevent the attachment between the male connector 1 and the female connector 4 from being hindered by the deposits.

  FIG. 3 is a front view of the male connector according to the second embodiment of the present invention. As shown in FIG. 3, the male connector 21 has the same configuration as the male connector 1 described above except that a slit groove 22 is provided instead of the through hole 14 described above. The slit groove 22 is provided on the cylindrical inner wall of the lock portion 23 of the male connector 21 and is used for discharging deposits on the inner wall.

  The slit groove 22 extends from the rear end to the front end of the inner wall, and has an appropriate width suitable for discharging deposits. In this case, the adhering substance such as a medicine that has entered the lock portion 23 can be easily discharged to the outside through the slit groove 22 by tilting the male connector 21 so that the front end side of the slit groove 22 is positioned below. it can. Other operations and the like are the same as in the case of the male connector 1 of the first embodiment.

  FIG. 4 is a front view of a male connector according to the third embodiment of the present invention. As shown in FIG. 4, the male connector 31 has the same configuration as the male connector 1 described above except that the slit hole 32 is provided instead of the through hole 14 described above. The slit hole 32 is provided as a slit penetrating from the cylindrical inner wall to the outer wall of the lock portion 33 of the male connector 31 in the same manner as in the case of the through hole 14 and is used for discharging deposits on the inner wall.

  The slit hole 32 extends from the rear end of the inner wall to the vicinity of the front end, and has an appropriate width suitable for discharging deposits. Also in this case, the deposit in the lock portion 33 can be easily discharged to the outside through the slit hole 32 by a water flow or an appropriate tool. Other operations and the like are the same as in the case of the male connector 1 of the first embodiment.

  In addition, this invention is not limited to the above-mentioned embodiment. For example, both the through hole 14 and the slit groove 22 described above may be provided in the lock portion as the deposit discharge means of the lock portion.

1, 2, 31 ... male connector, 2 ... infusion tube, 3 ... infusion tube, 4 ... female connector, 6 ... male side connection tube, 7, 23, 33 ... lock part, 8 ... conical inner surface, 9 ... conical outer surface, DESCRIPTION OF SYMBOLS 11 ... Inner wall, 12 ... Male screw, 13 ... Female screw, 14 ... Through-hole, 22 ... Slit groove, 32 ... Slit hole

Claims (4)

A male connector for connecting the downstream infusion pipe and the upstream infusion pipe by connecting to the female connector of the upstream infusion pipe provided on the downstream infusion pipe,
A male coupling pipe coupled to the female connector;
A lock portion provided on the outer periphery of the male connection pipe,
The male side connecting pipe is provided with a conical outer surface on the front end side for establishing connection with the female connector by fitting with a corresponding conical inner surface of the female connector,
The lock portion includes a cylindrical inner wall whose rear end side is fixed to the male connection pipe and whose front end side is open on the outer periphery of the conical outer surface,
The cylindrical inner wall is provided with a female screw for fixing a connection with the female connector by screwing with a corresponding male screw of the female connector,
The male connector according to claim 1, wherein the lock portion is provided with a deposit discharge means for discharging deposits on the cylindrical inner wall to the outside.   The male connector according to claim 1, wherein the attached matter discharging means includes a through-hole penetrating from an inner wall of the lock portion to an outer wall.   3. The male connector according to claim 1, wherein the attached matter discharging means includes a slit groove extending from a rear end portion to a front end on an inner wall of the lock portion.   The male connector according to claim 2, wherein the through hole is a slit hole extending from a rear end side to a front end side of a cylindrical inner wall of the lock portion.

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