JP5125051B2 - Medical connector - Google Patents

Description

  The present invention relates to a medical connector used when connecting a container containing a liquid material for administration to a living body and an administration tube for administering the liquid material to the living body.

  Conventionally, as disclosed in Patent Document 1, for example, a tube feeding method has been performed in which a liquid nutrient is directly injected into a stomach and administered to a patient who has a disorder in swallowing food. May be. This tube feeding method has the advantage that the recovery period of the patient can be shortened compared to the intravenous feeding method in which a nutrient is injected into the vein because the digestive organs can work. Widely used.

In the above-mentioned tube feeding method, the upstream end of the administration tube inserted into the stomach from the mouth or nose of the patient or the hole constructed from the abdominal wall to the stomach wall is used as the outlet portion of the container. And the nutrient contained in the container is guided to the stomach by the administration tube.
Japanese Utility Model Publication No. 7-31059

  By the way, as disclosed in Patent Document 1, there are a bag-like container in which a resin film is welded, a container in which polypropylene or the like is formed into a cylindrical shape, and the like. Furthermore, there are prefilled type containers pre-filled with nutrients, containers that can transfer nutrients formulated at the medical site according to the patient, and the like. As described above, since there are various types of containers and there are a plurality of manufacturers, the shape of the outlet portion of the container is different from each other except that the shape protrudes from the main body portion of the container. For this reason, in the medical field, it is necessary to prepare a connecting tool having a dedicated connection structure for each container, which is inconvenient when considering these controls.

  On the other hand, there exists a request | requirement of having versatility so that the connection structure of a container and an administration tube can respond | correspond to the exit part of multiple types of containers. However, in the case of general versatility, it is difficult to suppress the leakage of nutrients by securely connecting the administration tube to the outlets of various shapes, and compared to those with a dedicated connection structure. Therefore, the connection workability may be deteriorated.

  The present invention has been made in view of such a point, and the object of the present invention is to improve the connection workability between each outlet portion of a plurality of kinds of containers containing liquids to be administered to a living body and the administration tube. However, the object is to suppress leakage of the liquid from the connecting portion.

  In order to achieve the above object, in the present invention, the container connecting portion to which the outlet portion of the container is connected is made flexible, and the container connecting portion is harder than the container connecting portion on the administration tube connecting portion side. A gripping part was provided.

Specifically, in the invention of claim 1, the outlet portion provided so as to protrude from a container that stores the liquid material and an administration tube that guides the liquid material to a living body, the outlet portion and In the medical connector for connecting the administration tube, the administration tube connecting portion to which the upstream end portion of the administration tube is connected and the tube connected to the outlet portion of the container are inserted and inserted. A container connecting portion having flexibility to deform so as to expand the diameter corresponding to the shape of the outer peripheral surface of the outlet portion in a closed state, and provided on the administration tube connecting portion side of the container connecting portion, from the container connecting portion A bone portion that is harder than the container connection portion and extends in the center line direction is embedded in the peripheral wall of the container connection portion , and the grip portion includes the outlet portion. It extends so as to cover the container connecting portion from the outside toward the insertion side. There is an extension part, and a gap is provided between the extension part and the container connection part, and the tip part of the extension part is more than the end part of the container connection part on the side where the outlet part is inserted. Is configured to be positioned on the administration tube connecting portion side .

  According to this configuration, when inserting the outlet portion of the container into the container connecting portion, the operator can hold the gripping portion, so that the container connecting portion is prevented from being crushed in the radial direction, and the hard gripping portion is further connected to the container connecting portion. Therefore, when a force in the insertion direction is applied to the container connecting portion, deformation of the container connecting portion on the administration tube connecting portion side is also suppressed by the grip portion. Thereby, it becomes possible to easily insert and connect the outlet portion to the flexible container connecting portion. And in the state which inserted the exit part in the container connection part, a container connection part deform | transforms so that it may respond | correspond to the outer peripheral surface shape of an exit part. As a result, the container connecting portion can be brought into close contact with the outlet portions of various shapes, thereby suppressing the leakage of the liquid material.

  In addition, since a standardized product is often used for the administration tube, it is difficult for the liquid material to leak from between the administration tube and the administration tube connecting portion.

  Further, when the outlet portion of the container is inserted and connected to the container connecting portion, the container connecting portion is not easily crushed in the center line direction. Also, when pulling out the outlet part from the container connection part, the part where the bone part is embedded in the peripheral wall of the container connection part is harder than the other parts by twisting the container connection part. It is possible to separate the portion in which the bone portion is embedded from the outer peripheral surface of the outlet portion of the container. Thereby, it becomes possible to put air between the outer peripheral surface of the outlet portion of the container and the inner peripheral surface of the container connecting portion to unseal the contact state between them.

Moreover, when connecting a container connection part to the exit part of a container, the extension part of a holding part will be located in the place near a container. Therefore, by holding the extension part by hand, it is possible to perform the connection work while holding a place close to the container in the medical connector. Further, when inserting the outlet portion of the container into the container connection portion, there is a gap between the extension portion and the container connection portion, so that the extension portion inhibits the container connection portion from being deformed in the diameter increasing direction. There is no.

  According to a second aspect of the present invention, in the first aspect of the invention, the apparatus further comprises an infusion tube disposed between the upstream end of the administration tube and the administration tube connection portion, and the administration tube connection portion includes the infusion tube. The infusion tube is connected to the upstream end of the administration tube, and the drip tube is fixed to the gripping portion.

  According to this configuration, by integrating the grip portion with the infusion tube, the operator can hold the infusion tube together with the grip portion when inserting the outlet portion of the container into the container connection portion. It becomes possible to stabilize in the hand.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, a flat surface portion is provided on the outer peripheral surface of the gripping portion.

  According to this configuration, when the operator puts his / her finger on the flat surface portion and grips it, the grip portion becomes difficult to slip in the hand when the outlet portion of the container is inserted into the container connection portion.

  According to a fourth aspect of the present invention, in any one of the first to third aspects of the present invention, the outer peripheral surface of the gripping portion is provided with a protruding portion.

  According to this configuration, when the outlet portion of the container is inserted into the container connection portion or pulled out from the container connection portion, the protruding portion is prevented from slipping, and the gripping portion is difficult to slip in the hand.

  According to a fifth aspect of the present invention, in any one of the first to fourth aspects of the present invention, the grip portion and the administration tube connecting portion are integrated.

  According to this configuration, it is possible to reduce the cost of the medical connector.

  According to a sixth aspect of the present invention, in any one of the first to fourth aspects, the container connecting portion and the administration tube connecting portion are integrated.

  According to this configuration, it is possible to reduce the cost of the medical connector and to prevent leakage of the liquid material between the container connecting portion and the administration tube connecting portion.

  In the invention of claim 7, in any one of claims 1 to 6, the gripping portion is formed in a cylindrical shape, and the container connecting portion has a cylindrical covering portion covering the inner peripheral surface of the gripping portion. The structure is integrally formed.

  According to this configuration, when the liquid material flowing from the container flows through the inside of the gripping portion, the inner peripheral surface of the gripping portion is covered with the covering portion. It will be pressed against the peripheral surface. At this time, the covering portion is integrally formed with the container connecting portion and has flexibility, while the gripping portion is harder than the covering portion, so that the covering portion is in close contact with the inner peripheral surface of the gripping portion and has a sealing effect. Is obtained. Thereby, leakage of the liquid material is suppressed.

  In the invention of claim 8, in the invention of claim 7, the inner peripheral surface of the covering portion of the container connecting portion is constituted by a smooth surface.

  According to this configuration, when the liquid material flows through the inside of the covering portion, the inner peripheral surface of the covering portion is smooth, so that the liquid material does not easily stay.

  In the invention of claim 9, in the invention of claim 7, a step portion corresponding to the thickness of the covering portion is formed on the inner peripheral surface of the gripping portion, and the covering portion is located in the step portion. .

  According to this configuration, the flow path of the liquid material can be made smooth.

  In the invention of claim 10, in any one of claims 1 to 9, the container connection portion is provided with a fixing portion fixed to the outer peripheral surface of the gripping portion.

According to this structure, it becomes difficult to isolate | separate a container connection part and a holding part .

Configuration In the present invention of claim 1 1, in the invention according to the first cross-sectional area in a direction orthogonal to the longitudinal direction of the bone portion, which is set to be smaller as closer to the side where the outlet of the container is inserted And

  According to this configuration, the rigidity of the bone portion decreases as it approaches the side where the outlet portion of the container is inserted. Therefore, in a state where the outlet portion of the container is inserted into the container connecting portion, the shape of the portion having low rigidity in the bone portion follows the shape of the outer peripheral surface of the outlet portion, and the container connecting portion is surely connected to the outlet portion. It comes in close contact with.

In the invention of claim 1 2, in any one invention of claim 1 1 1, the grip portion and the container connection part consists of a separate member, the container connection portion, to engage the grip portion It is set as the structure by which the anchor part is provided.

  According to this configuration, when the gripping portion and the container connection portion are made of materials suitable for each, the two are firmly integrated.

  According to the invention of claim 1, the container connecting portion is configured flexibly, and the gripping portion harder than the container connecting portion is provided on the administration tube connecting portion side of the container connecting portion. While improving the connection workability of the outlet portion, each outlet portion of the plurality of types of containers and the administration tube can be reliably connected to suppress leakage of the liquid material.

  Also, by embedding a bone portion extending in the center line direction in the peripheral wall of the container connection portion, when the outlet portion of the container is inserted and connected to the container connection portion, the container connection portion is not easily crushed in the center line direction, and the connection work The property can be further improved. In addition, when pulling out the outlet of the container from the container connecting part, air is introduced between the outer peripheral surface of the outlet part of the container and the inner peripheral surface of the container connecting part by twisting the container connecting part. Thus, the close contact state of the two can be released, and the outlet portion of the container can be easily pulled out with a small force.

  According to the invention of claim 2, since the drip tube arranged between the upstream end portion of the administration tube and the administration tube connecting portion is integrated with the gripping portion, the gripping portion is stabilized in the hand during the connection work. Therefore, the connection workability can be further improved.

  According to the third and fourth aspects of the invention, the gripping portion is less likely to slip in the hand when the outlet portion of the container is inserted into the container connecting portion or when being pulled out of the container connecting portion, so that the connection workability is further improved. Can be.

  According to invention of Claim 5, since the holding | grip part and the administration pipe | tube connection part were united, the cost reduction of a medical connection tool can be aimed at.

  According to the sixth aspect of the present invention, since the container connecting portion and the administration tube connecting portion are integrated, the cost of the medical connecting device can be reduced, and the leakage of the liquid substance can be prevented.

  According to the invention of claim 7, since the gripping portion is formed in a cylindrical shape, and the covering portion covering the inner peripheral surface of the gripping portion is integrally formed on the container connecting portion, the gripping portion, the administration tube connecting portion, the container When the connecting portion is formed of a separate member, the liquid material can be prevented from leaking.

  According to the eighth aspect of the invention, since the inner peripheral surface of the covering portion is configured as a smooth surface, the liquid material can flow smoothly. Thereby, retention of a liquid substance can be suppressed.

  According to invention of Claim 9, since the coating | coated part was located in the step part formed in the internal peripheral surface of a holding part, the flow path of a liquid substance can be comprised smoothly and the retention of a liquid substance can be suppressed.

  According to the invention of claim 10, it is possible to make it difficult to separate the administration tube connecting portion and the container connecting portion, which are constituted by separate members, and it is possible to suppress damage to the medical connection tool.

According to the invention of claim 11, the rigidity of the bone portion can be lowered as it approaches the side where the outlet portion of the container is inserted, whereby the bone portion is inserted in the state where the outlet portion of the container is inserted into the container connecting portion. The portion with low rigidity in the shape is in conformity with the shape of the outer peripheral surface of the outlet portion, and the container connection portion can be securely adhered to the outlet portion to ensure liquid tightness.

According to the present invention 2, the container connecting portion, is provided with the anchor portion engaged with the grip portion, can be prevented and a gripping portion container connecting portion and firmly integrated to each other are separated, Damage to medical connectors can be prevented.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature, and is not intended to limit the present invention, its application, or its use.

  FIG. 1 shows a medical connector 1 according to Reference Example 1 of the present invention. As shown in FIG. 2, the medical connector 1 is for connecting a container A containing a nutrient used for tube feeding and an administration tube B for guiding the nutrient to the patient's stomach. Is. The container A has a bag-like shape formed by welding a resin film, and has a suspension hole A1 for suspending it on an irrigator platform (not shown) arranged around the patient's bed. Yes. The outlet portion A2 of the container A is formed by molding a hard resin material such as polypropylene into a cylindrical shape, and protrudes from the main body portion of the container A. In addition to the bag-shaped container, the container A includes a resin molded into a cylindrical shape, and a container with a lid that can transfer nutrients prepared at the medical site according to the patient. There is also. The shapes of the outlet portions A2 of the plurality of types of containers A are different from each other because there is no unified standard.

  The administration tube B is made of, for example, polyvinyl chloride. The downstream end portion of the administration tube B is inserted into the stomach from the patient's mouth and nose via the esophagus, and the upstream end portion is the outlet portion A2 of the container A via the medical connector 1. To be connected to. If the patient has a hole for administration of nutrients extending from the peritoneum to the stomach wall, the distal end of the administration tube B may be inserted into the hole. Further, the nutrient may be guided directly to the intestine through the administration tube B. In the middle of the administration tube B, a roll clamp C for adjusting the flow rate is provided.

  As shown in FIGS. 1 and 3 to 5, the medical connector 1 has a tubular shape as a whole, and includes a container connecting portion 11 made of a soft member 10, a gripping portion 13 made of a hard member 12, and An administration tube connection portion 14 and an infusion tube 15 are provided. In the state of use shown in FIG. 2, the medical connector 1 has the container connecting portion 11 located at the upper portion, and the drip tube 15 located below the container connecting portion 11. In the description of Reference Example 1, the upper side in the usage state is simply referred to as “upper”, and the lower side is simply referred to as “lower”.

  The hard member 12 is formed by forming a resin material such as polypropylene in a substantially cylindrical shape. Other examples of the material of the hard member 12 include, but are not limited to, acrylonitrile butadiene styrene resin (ABS resin), polycarbonate, hard polyvinyl chloride, and the like. As shown in FIG. 5, the grip 13 is formed in the upper half of the hard member 12, and the administration tube connection 14 is formed in the lower half. Flat surface portions 13 a are respectively formed at two positions 180 ° apart in the circumferential direction on the outer peripheral surface of the grip portion 13. The flat surface portions 13 a and 13 a have the same shape as each other, and are formed from the intermediate portion in the vertical direction of the grip portion 13 to the upper edge portion. The site | part in which the flat surface part 13a in the holding part 13 was formed is thin compared with another site | part. An inclined surface portion 13b that is inclined so as to be located on the radially outer side of the gripping portion 13 is continued to the lower edge portion of the flat surface portion 13a as it goes downward. The number of the flat surface portions 13a is not limited to two and can be arbitrarily set.

  As shown in FIGS. 1 and 3, between the flat surface portions 13 a and 13 a on the outer peripheral surface of the grip portion 13, there are two concave strip portions 13 c extending in the center line direction of the grip portion 13 in the circumferential direction. Are formed apart. These concave strip portions 13 c are formed from the lower edge portion of the grip portion 13 to the upper edge portion.

  As shown in FIG. 5, a step portion 13 d is formed near the lower portion of the inner peripheral surface of the grip portion 13. The depth of the stepped portion 13d is set to be the same as the thickness of a covering portion 11b of the container connecting portion 11 described later. Further, the cross-sectional shape of the gripping portion 13 is set to be substantially the same from the upper edge portion to the stepped portion 13d. Therefore, the inner peripheral surface of the gripping portion 13 is constituted by a smooth surface from the upper edge portion to the stepped portion 13d. ing. A lower side of the inner peripheral surface of the gripping portion 13 than the step portion 13d is configured by a tapered surface portion 13e having a smaller diameter as it goes downward.

  The administration tube connection part 14 has a double cylinder structure including an inner cylinder part 14a and an outer cylinder part 14b. The inner peripheral surface of the inner cylinder portion 14 a is continuous with the tapered surface portion 13 e of the grip portion 13. The inside of the inner cylinder portion 14 a communicates with the inside of the grip portion 13. The thickness of the outer cylinder part 14b is set thinner than the thickness of the inner cylinder part 14a, and the lower end part of the outer cylinder part 14b is located above the lower end part of the inner cylinder part 14a. A first annular wall 14c that protrudes outward and extends in the circumferential direction is provided on the outer peripheral surface of the outer cylindrical portion 14b. A second annular wall 14d extending downward is provided at the outer edge of the first annular wall 14c.

  The infusion tube 15 is fixed to the lower part of the administration tube connecting portion 14, and the administration tube connecting portion 14 and the infusion tube 15 are integrated. The drip tube 15 is an integrally molded product made of colorless and transparent polypropylene or the like, and is formed to have a smaller diameter as it goes downward. A flange 15 a that protrudes radially outward and extends in the circumferential direction is provided at the upper end of the drip tube 15. An annular welded portion 15b located between the outer cylindrical portion 14b and the second annular wall 14d is provided on the inner peripheral side of the upper surface of the flange 15a. The entire circumference of the welded portion 15b is welded to the outer tube portion 14b and the first and second annular walls 14c and 14d. The outer peripheral side of the upper surface of the flange 15a comes into contact with the lower end of the second annular wall 14d. The administration tube connecting portion 14 and the drip tube 15 may be adhered using an adhesive or the like, or may be integrally formed.

  As shown in FIG. 1, a fitting groove 15 c into which the upstream end of the administration tube B is fitted is formed on the lower end surface of the infusion tube 15. The administration tube B is connected to the administration tube connection portion 14 via the infusion tube 15 in a state where the administration tube B is inserted into the insertion groove 15 c and communicates with the inside of the gripping portion 13. Since the administration tube B is a standardized product, the shape of the insertion groove 15c is a predetermined shape that hardly leaks.

  The soft member 10 is formed by forming a thermoplastic elastomer in a cylindrical shape that is softer than the material constituting the hard member 12 and the drip tube 15 and has rubber elasticity. Other examples of the material of the soft member 10 include, but are not limited to, soft polyvinyl chloride. This soft member 10 constitutes the container connecting portion 11, and as shown in FIG. 5, a thick main body portion 11a having an insertion hole 11f into which the outlet portion A2 of the container A is inserted, and the main body portion 11a. It is comprised by the cylindrical coating | coated part 11b extended below so that the inner peripheral surface of the said holding | grip part 13 may be coat | covered from a lower end part. That is, the gripping portion 13 is located on the administration tube connecting portion 14 side of the container connecting portion 11. Further, the flexibility of the container connecting portion 11 is easily deformed when the outlet portion A2 is inserted when the outer diameter and the shape of the outlet portion A2 are different among a plurality of types of containers A, and completely. It is flexible enough to be deformed along the outer peripheral surface corresponding to the outer peripheral surface shape of the outlet portion A2 in the inserted state.

  The inner peripheral surface of the main body portion 11a is configured by a tapered surface that extends while slightly reducing the diameter downward. The inner diameter of the main body portion 11a is set to be smaller than the outer diameter of the outlet portion A2 of the container A so as to correspond to the container A having the smallest outer diameter of the outlet portion A2 among the plurality of types of containers A described above. Has been. Therefore, when the outlet portion A2 is inserted into the container connecting portion 11, the peripheral wall of the container connecting portion 11 extends and the diameter increases.

  The inner peripheral surface of the covering portion 11 b is a smooth surface extending along the inner peripheral surface of the grip portion 13. As shown in FIGS. 1, 3, and 4, a plurality of recessed portions 11 c are formed on the outer peripheral surface of the main body portion 11 a so as to be separated in the circumferential direction. In addition, a fixing portion 11d fixed to the upper portion of each flat surface portion 13a of the grip portion 13 is provided at the lower end portion of the main body portion 11a. As shown in FIG. 5, the upper portion of the gripping portion 13 is sandwiched between the fixing portion 11d and the covering portion 11b. On the other hand, on the upper edge portion of the main body portion 11a, a ridge portion 11e protruding outward in the radial direction and extending in the circumferential direction is formed.

  Next, a procedure for manufacturing the medical connector 1 will be described. First, the hard member 12 and the drip tube 15 are formed separately. Then, the welding portion 15 b of the drip tube 15 is welded to the administration tube connecting portion 14. Next, the gripping portion 13 is placed in a mold (not shown) for molding the container connection portion 11 and the material is injected into the cavity in the mold. As a result, the container connecting portion 11 integrated with the gripping portion 13 is obtained. The covering portion 11b of the container connecting portion 11 is welded to the inner peripheral surface of the gripping portion 13, and the fixing portion 11d is attached to the flat surface portion 13a. Welding.

  Next, the point which connects the container A and the administration pipe | tube B using the medical connector 1 comprised as mentioned above is demonstrated. First, the operator holds the grip portion 13 by hand, and inserts the outlet portion A2 of the container A into the insertion hole 11f of the container connection portion 11 as indicated by an arrow in FIG. At this time, when the operator puts his / her finger on the flat surface portions 13a and 13a so as to grip the grip portion 13, the grip portion 13 becomes difficult to slip in the hand. Further, since the drip tube 15 is directly fixed to the hard member 12 and the gripping unit 13 and the drip tube 15 are integrated, the operator can hold the drip tube 15 together with the gripping unit 13, thereby holding the gripping unit 13. Can be stabilized in the hand.

  Since the worker has the grip portion 13 that is harder than the container connection portion 11, the container connection portion 11 is prevented from being crushed, and the outlet portion A <b> 2 is located deep in the container connection portion 11 as indicated by a virtual line in FIG. 5. Can be inserted. When the outlet part A2 is inserted, the outer diameter of the outlet part A2 is set larger than the inner diameter of the container connection part 11, so that the container connection part 11 pressed in the insertion direction has a centerline direction. A compressive force acts strongly. At this time, since the grip portion 13 is hard, the grip portion 13 suppresses deformation of the container connection portion 11 on the administration tube connection portion 14 side. Thereby, it becomes possible to easily insert and connect the outlet portion A2 to the container connecting portion 11. In a state where the outlet portion A2 is completely inserted into the container connecting portion 11, the container connecting portion 11 has rubber elasticity, so that it is deformed and expanded so as to correspond to the outer peripheral surface shape of the outlet portion A2. The inner peripheral surface of the container connecting portion 11 and the outer peripheral surface of the outlet portion A2 are in close contact with each other over the entire periphery. In this manner, it is possible to prevent leakage of nutrients by bringing the container connection portion 11 into close contact with the outlet portion A2 having various shapes. Further, the upstream end portion of the administration tube B is fitted into the fitting groove 15 c of the infusion tube 15. As a result, the administration tube connecting portion 14 is connected to the upstream end portion of the administration tube B via the drip tube 15. The timing of connecting the administration tube B may be after connecting the outlet part A2 of the container A or before connecting the outlet part A2.

  When the outlet part A2 and the administration tube B are connected via the connector 1, the nutrient in the container A flows from the outlet part A2 into the gripping part 13 and the inner cylinder part 14a and drops into the infusion tube 15 Then, it is introduced from the infusion tube 15 into the stomach via the administration tube B.

  Further, the inner peripheral surface of the covering portion 11b is a smooth surface, and further, a step 13d corresponding to the thickness of the covering portion 11b is formed on the inner peripheral surface of the gripping portion 13, and the covering portion 11b is positioned in the step 13d. Therefore, the nutrient that has flowed in from the outlet portion A <b> 2 flows smoothly into the drip tube 15.

  As described above, according to the medical connector 1 according to the first reference example, the container connecting portion 11 is configured flexibly, and the container connecting portion 11 is closer to the administration tube connecting portion 14 than the container connecting portion 11. Since the rigid gripping portion 13 is provided, the outlet portion A2 of the plurality of types of containers A is securely connected to the administration tube B while the gripping portion 13 is provided to improve the connection workability of the outlet portion A2 of the container A. The leakage of nutrients can be suppressed.

  In addition, since the drip tube 15 is fixed to the hard member 12 constituting the gripping portion 13 and the gripping portion 13 and the drip tube 15 are integrated, the gripping portion 13 is stabilized in the hand during the connection work. be able to. Furthermore, by providing the grip portion 13 with the flat surface portion 13a, the grip portion 13 becomes difficult to slip in the hand. By these things, connection workability | operativity can be made still better.

  Moreover, since the holding part 13 and the administration pipe connection part 14 are integrally formed, the number of parts can be reduced. In this case, the holding part 13 and the administration tube connecting part 14 and the container connecting part 11 can be made of materials suitable for each, and both the flexibility of the container connecting part 11 and the sufficient hardness of the holding part 13 can be achieved. Can do.

  Further, since the gripping portion 13 is formed in a cylindrical shape and the flexible covering portion 11b that covers the inner peripheral surface of the gripping portion 13 is provided in the container pipe connection portion 11, leakage of nutrients can be prevented.

  Further, since the inner peripheral surface of the covering portion 11b is smoothed and the covering portion 11b is positioned in the stepped portion 13d of the gripping portion 13, the nutrient can be flowed smoothly. Thereby, it can suppress that a nutrient is retained in the medical connector 1.

  Further, by fixing the fixing portion 11d to the outer peripheral surface of the gripping portion 13, it is possible to make it difficult to separate the container connecting portion 11 and the administration tube connecting portion 14.

  Moreover, you may provide the protrusion part 20 in the outer peripheral surface of the holding part 13 like the reference example 2 shown in FIG. The projecting portion 20 has a plate shape extending in the center line direction of the grip portion 13, and two protruding portions 20 are provided apart in the circumferential direction. By providing the protruding portion 20 in the gripping portion 13 in this way, the protruding portion 20 becomes non-slip by having the gripping portion 13 when the outlet portion A2 of the container A is inserted into the container connecting portion 11, and the gripping portion 13 It becomes difficult to slip in the hands. Thereby, the connection workability | operativity of exit part A2 of the container A can be made still better. In the first modification, the grip portion 13 may be provided with a flat surface portion together with the protruding portion 20. Moreover, the shape and number of the protrusions 20 can be arbitrarily set.

  Further, the shape of the drip tube 15 may be formed as in Reference Example 3 shown in FIG. The drip tube 15 is made of, for example, polyvinyl chloride.

  FIG. 8 shows a medical connector 1 according to Reference Example 4 of the present invention. The medical connector 1 of this reference example 4 is different from that of the reference example 1 in that the drip tube 15 is separated from the hard member 12 and that the protruding portion 22 is provided on the grip portion 13. Hereinafter, the same parts as those in Reference Example 1 are denoted by the same reference numerals, and different parts will be described in detail.

  The protruding portion 22 has a plate shape protruding from the outer peripheral surface of the gripping portion 13 and extending in the vertical direction, and two protruding portions 22 are provided in the circumferential direction. The upper end opening of the drip tube 15 is closed with a resin cap member 21. A through hole (not shown) is formed at a substantially central portion of the cap member 21, and the cylindrical portion 21 a protrudes upward from the peripheral portion of the through hole.

  The administration tube connecting portion 14 is below the grip portion 13 in the hard member 12. Between the hard member 12 and the drip tube 15, an upper tube 16 that is a constituent member of the connector 1 is disposed. The upper tube 16 has the same flexibility as that of the administration tube B, and the upstream end portion of the upper tube 16 is externally fitted and connected to a cylindrical portion provided in the administration tube connection portion 14. The downstream end portion of the upper pipe 16 is externally fitted and connected to the cylindrical portion 21 a of the cap member 21. The upstream end of the administration tube B is connected to the downstream end of the infusion tube 15. That is, the administration tube B is connected to the administration tube connection portion 14 via the infusion tube 15 and the upper tube 16.

  Similarly to the reference example 1, the medical connector 1 according to the reference example 4 improves the connection workability of the outlet part A2 of the container A, and the outlet parts A2 of the plural kinds of containers A to the administration tube B. It can be connected securely to prevent leakage of nutrients. In addition, since the upper tube 16 is provided between the hard member 12 and the drip tube 15, the upper tube 16 can be bent to change the relative position between the hard member 12 and the drip tube 15, which is convenient for use. Improves.

  Further, it is possible to provide a flat surface portion similar to that of the reference example 1 to the grip portion 13 of the reference example 4. Moreover, the protrusion part 22 can also be abbreviate | omitted.

Embodiment 1 of the Invention
9 and 10 show the medical connector 1 according to Embodiment 1 of the present invention. The medical connector 1 of Embodiment 1 is different in the shape of the soft member 10 and the hard member 12 from that of Reference Example 1, and hereinafter, the same reference numerals are given to the same parts as those of Reference Example 1, Different parts will be described in detail.

  As shown in FIGS. 10 and 11, the hard member 12 has two bone portions 30, 30 projecting upward from the vicinity of the substantially central portion in the center line direction on the inner peripheral surface of the hard member 12. Are formed at a distance of about 180 °. The bone parts 30, 30 are separated from the inner peripheral surface of the hard member 12 by a predetermined dimension inward, and the whole is embedded in the peripheral wall of the container connecting part 11 of the soft member 10 and integrated. The bone portions 30 are for preventing the container connecting portion 11 from being crushed in the center line direction. Each bone portion 30 has an elongated shape extending to the upper end portion of the container connection portion 11, and its upper end surface is exposed from the upper end surface of the container connection portion 11 as shown in FIG. 9. The cross-sectional shape in the direction orthogonal to the longitudinal direction of the bone portion 30 is a shape that draws an arc along the circumferential direction of the container connecting portion 11. Moreover, the thickness of the bone part 30 is made thin, so that it goes upwards. That is, the cross-sectional area in the direction orthogonal to the longitudinal direction of the bone part 30 is set to be smaller as it goes upward, that is, as it approaches the insertion side of the outlet part A2. For this reason, the rigidity of the bone part 30 decreases as it goes upward. Therefore, the upper part of the bone part 30 is deformed so as to follow the outer peripheral surface shape of the outlet part A2 with the outlet part A2 inserted. To do. Thereby, the container connection part 11 can be closely_contact | adhered to the outer peripheral surface of exit part A2, and the leakage of a nutrient can be prevented.

  As shown in FIG. 12, the holding portion 13 of the hard member 12 is formed with an extension portion 31 extending toward the container connection portion 11 outside the container connection portion 11. The upper end portion of the extension portion 31 is located below the upper end portion of the container connection portion 11, and the extension portion 31 has a cylindrical shape surrounding the substantially lower half portion of the container connection portion 11 as a whole. As shown in FIGS. 9 and 10, a gap 32 is formed over the entire circumference between the inner peripheral surface of the extension portion 31 and the outer peripheral surface of the container connection portion 11. The gap 32 is for allowing deformation of the container connecting portion 11 in the diameter increasing direction when the outlet portion A2 of the container A is inserted into the container connecting portion 11.

  As shown in FIG. 10, a protruding portion 12 a that protrudes inward is formed on the inner peripheral surface of the hard member 12. A through hole 33 penetrating in the center line direction of the hard member 12 is formed in the protruding portion 12a. A soft resin material constituting the container connecting portion 11 flows into the through hole 33. The resin material that has flowed into the through-hole 33 is solidified in a shape that spreads below the through-hole 33, and this resin material constitutes an anchor portion 34 that engages with the grip portion 13 in the present invention. Yes.

  As shown in FIGS. 9 and 11, a plurality of recessed portions 35 that are slightly recessed are formed on the outer peripheral surface of the grip portion 13 so as to be separated from each other in the circumferential direction. The hollow portion 35 has an elongated shape in the vertical direction. In addition, the shape and number of this hollow part 35 can be set arbitrarily.

  Next, a case where the outlet portion A2 of the container A is inserted into the container connecting portion 11 of the medical connector 1 according to the first embodiment will be described. When the operator holds the grip portion 13 by hand, since the plurality of recess portions 13 are formed on the outer peripheral surface of the grip portion 13, these recess portions 13 serve as slip stoppers, and the medical connector 1 is hard to slip in the hand. Further, the extension part 31 of the gripping part 13 is located in a place near the outlet part A2 of the container A. Therefore, by holding the extension part 31 by hand, it is possible to have a place close to the outlet part A2 in the connector 1. At this time, since the extension part 31 is comprised with the hard resin material, it is hard to deform | transform.

  When the outlet portion A2 is inserted into the container connection portion 11, the container connection portion 11 is deformed in the diameter increasing direction. At this time, since there is a gap 32 between the container connection part 11 and the extension part 31, the extension part 31 does not hinder the deformation of the container connection part 11, and the outlet part A2 extends to the deep part of the container connection part 11. Can be inserted securely.

  On the other hand, when the outlet portion A2 inserted as described above is pulled out from the container connecting portion 11, the outer peripheral surface of the outlet portion A2 and the inner peripheral surface of the container connecting portion 11 are in close contact with each other. So it may be difficult to pull out. In such a case, holding the gripping part 13 and the infusion tube 15, as shown by the arrow Y in FIG. 13, the container connecting part 11 is squeezed in the direction in which one bone part 30 is separated from the outer peripheral surface of the outlet part A2. Like that. Thereby, since the site | part corresponding to the said bone part 30 is hardened by this bone part 30 among the surrounding walls of the container connection part 11, it leaves | separates easily from the outer peripheral surface of the container connection part 11, and the inside of the container connection part 11 An air introduction space S is formed between the peripheral surface and the outer peripheral surface of the outlet portion A2. When air enters from the space S, the contact state between the inner peripheral surface of the container connecting portion 11 and the outer peripheral surface of the outlet portion A2 is released, so that the outlet portion A2 can be easily pulled out with a small force.

  Similarly to the reference example 1, the medical connector 1 according to the first embodiment also improves the connection workability of the outlet part A2 of the container A, and the outlet parts A2 of the plural kinds of containers A to the administration tube B. It can be connected securely to prevent leakage of nutrients.

  Moreover, by providing the anchor part 34 in the container connecting part 11, the container connecting part 11 and the grip part 13 can be firmly integrated to prevent them from being separated, and the breakage of the connector 1 can be prevented. Can do.

<< Embodiment 2 of the Invention >>
FIG. 14 shows a medical connector 1 according to Embodiment 2 of the present invention. The medical connector 1 of Embodiment 2 is different in the shape of the rigid member 11 and the drip tube 15 from that of Reference Example 1, and hereinafter, the same parts as those of Reference Example 1 are denoted by the same reference numerals, Different parts will be described in detail.

  As shown in FIGS. 15 and 16, the rigid member 12 has six elongated bone portions 30 similar to those in the first embodiment. The intervals in the circumferential direction of these bone portions 30 are set equal. Further, the lower half portion of the gripping portion 13 is a small diameter portion 40 having a smaller diameter than the upper half portion. As shown in FIG. 17, a plurality of plate-like protrusions 41 extending in the vertical direction are formed on the outer peripheral surface of the grip portion 13 so as to be separated from each other in the circumferential direction. Further, as shown in FIG. 15, the hard member 12 has a through hole 33 similar to that of the first embodiment, and the resin material that has flowed into the through hole 33 is fixed to the outer peripheral surface of the gripping portion 13 to be anchor portions. 34 is constituted.

  In addition, the administration tube connection portion 14 is provided with a tube portion 14 e that protrudes toward the inside of the infusion tube 15. As shown in FIG. 14, both end portions of the drip tube 15 are formed to have a smaller diameter than the intermediate portion.

  Similarly to the reference example 1, the medical connector 1 according to the second embodiment also improves the connection workability of the outlet part A2 of the container A, and the outlet parts A2 of the plurality of types of containers A to the administration tube B. It can be connected securely to prevent leakage of nutrients.

  In the first and second embodiments, the container connecting portion 11 is made of an elastomer. However, the container connecting portion 11 is not limited to this, and for example, the outlet portion A2 is made of rubber or silicone. Any material may be used as long as it is flexible so as to correspond to the shape of the outer peripheral surface.

  In the first and second embodiments, the grasping portion 13 and the administration tube connecting portion 14 are integrally formed, but they may be formed of separate members. Moreover, the holding part 13 should just be a material harder than a container connection part 11, and it is hard to deform | transform, and may be comprised with metal materials other than resin.

  Moreover, in the said Embodiment 1, 2, although the bone part 30 comprised more rigidly than this container connection part 11 is embedded in the surrounding wall of the container connection part 11, the number of these bone parts 30 is two. The number is not limited to six, and may be one or three or more. Moreover, the dimension in the longitudinal direction of the bone part 30 may be shortened so as to reach the middle part in the vertical direction of the peripheral wall of the container connecting part 11. Moreover, when providing the bone part 30, you may make it visible from the outer side of the container connection part 11 by comprising the container connection part 11 with the material which has translucency. By doing so, the operator can confirm the position of the bone portion 30 when the outlet portion A2 is pulled out from the container connecting portion 11, so that the direction in which the container connecting portion 11 is twisted is easy to understand and the workability is further improved. it can. In order to obtain the same effect, a mark indicating the position of the bone part 30 may be provided on the outer peripheral surface of the container connecting part 11.

  As described above, the medical connector according to the present invention can be used, for example, when connecting a container containing a nutrient for the tube feeding method and an administration tube.

It is a perspective view of the medical connector which concerns on the reference example 1. FIG. It is a figure explaining the use condition of a medical connector. It is a side view of a medical connector. It is a front view of a medical connector. It is the VV sectional view taken on the line in FIG. It is a perspective view which shows the state which connected the administration tube to the medical connector which concerns on the reference example 2. FIG. FIG. 7 is a diagram corresponding to FIG. 6 according to Reference Example 3. FIG. 7 is a view corresponding to FIG. 6 according to Reference Example 4. 1 is a perspective view of a medical connection tool according to Embodiment 1. FIG. FIG. 10 is a sectional view taken along line XX in FIG. 9. 3 is a perspective view of a hard member according to Embodiment 1. FIG. It is a side view of the state where the soft member and hard member which concern on Embodiment 1 were integrated. FIG. 11 is a view corresponding to FIG. 10 for explaining a case where the outlet portion of the container is pulled out from the container connecting portion according to the first embodiment. FIG. 10 is a diagram corresponding to FIG. 9 according to the second embodiment. It is the XV-XV sectional view taken on the line in FIG. FIG. 12 is a view corresponding to FIG. 11 according to the second embodiment. FIG. 13 is a view corresponding to FIG. 12 according to the second embodiment.

DESCRIPTION OF SYMBOLS 1 Medical connector 11 Container connection part 11b Covering part 13 Grasping part 13a Flat surface part 14 Administration pipe connection part 15 Infusion tube 20, 22 Protrusion part 30 Bone part 31 Extension part 32 Crevice 34 Anchor part A Container A2 Outlet part B Administration pipe

Claims (12)

In a medical connector that is disposed between an outlet portion provided so as to protrude from a container that stores a liquid substance and an administration tube that guides the liquid substance to a living body, and connects the outlet portion and the administration tube.
An administration tube connection to which an upstream end of the administration tube is connected;
A container connecting portion that has a cylindrical shape that is connected in a state where the outlet portion of the container is inserted, and has a flexibility that deforms so as to expand the diameter corresponding to the outer peripheral surface shape of the outlet portion in the inserted state. When,
Provided on the administration tube connection part side of the container connection part, and comprises a gripping part configured to be harder than the container connection part,
The peripheral wall of the container connecting portion is embedded with a bone portion configured to be harder than the container connecting portion and extending in the center line direction ,
The gripping portion has an extension that extends to cover the container connection portion from the outside toward the side where the outlet portion is inserted,
A gap is provided between the extension part and the container connection part,
The medical connector according to claim 1, wherein a distal end portion of the extension portion is positioned closer to the administration tube connection portion side than an end portion of the container connection portion on the side where the outlet portion is inserted . The medical connector according to claim 1, wherein
A drip tube disposed between the upstream end of the administration tube and the administration tube connection,
The administration tube connection is connected to the upstream end of the administration tube via the infusion tube,
A medical connector characterized in that the drip tube is fixed to a gripping part. The medical connector according to claim 1 or 2,
A medical connector characterized in that a flat surface portion is provided on the outer peripheral surface of the grip portion. The medical connector according to any one of claims 1 to 3,
A medical connector characterized in that a protrusion is provided on the outer peripheral surface of the grip portion. The medical connector according to any one of claims 1 to 4,
A medical connector, wherein the gripping part and the administration tube connecting part are integrated. The medical connector according to any one of claims 1 to 5,
A medical connector, wherein the container connecting portion and the administration tube connecting portion are integrated. The medical connector according to any one of claims 1 to 6,
The gripping part is formed in a cylindrical shape,
A medical connector, wherein the container connecting portion is integrally formed with a cylindrical covering portion that covers the inner peripheral surface of the gripping portion. The medical connector according to claim 7, wherein
A medical connector characterized in that the inner peripheral surface of the covering portion of the container connecting portion is a smooth surface. The medical connector according to claim 7, wherein
A medical connector, wherein a step portion corresponding to the thickness of the covering portion is formed on the inner peripheral surface of the grip portion, and the covering portion is located in the step portion. The medical connector according to any one of claims 1 to 9,
The medical connector, wherein the container connecting portion is provided with a fixing portion fixed to the outer peripheral surface of the gripping portion. The medical connector according to claim 1, wherein
A medical connector, wherein a cross-sectional area in a direction orthogonal to a longitudinal direction of a bone part is set so as to become smaller toward a side where an outlet part of a container is inserted. The medical connector according to any one of claims 1 to 11,
A medical connector, wherein the gripping portion and the container connecting portion are formed of different members, and the container connecting portion is provided with an anchor portion that engages with the gripping portion.

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