TWI566770B - Medical administration device and medical bag - Google Patents

Description

Medical drug delivery device and medical bag Field of invention

The present invention relates to a medical administration set, which connects a medical container with an infusion tube or the like, and more particularly relates to a technique for preventing impurities from being mixed in, and sealing and connecting the nutrient container and the infusion tube correctly and sealed. .

Background of the invention

As a method of infusion of a nutrient or a medicament to a patient, enteral nutrition therapy is known.

For enteral nutrition therapy, a specific medical administration device is used which includes a medical container and an infusion tube connected to the medical container. That is, a soft infusion tube (referred to as a transnasal infusion tube) is inserted from the nasal cavity of the patient to the intestine, and a liquid such as a nutrient, a medicament, or a liquid food stored in a medical container by a nasal infusion tube (hereinafter, Just called "nutrition".) Directly administered to the patient's intestines.

In addition, for enteral nutrition therapy, there is a method of administering nutrition to a patient by a PEG (percutaneous endoscopic gastrostomy) infusion tube.

The medical container is provided with a port (discharge port), and the front end of the port is usually sealed by a sealing cap before use. When the above infusion is performed, the operator first opens the sealing cap of the medical container to open the port, and releases the sealed state in the container. Further, a specific sealing cover for connection is connected to the port. On the other hand, a nozzle-specific connector is prepared, the connector is connected to the connection sealing cover, and the connector is connected to a nasal infusion tube or a PEG infusion tube (or an infusion tube connected to a PEG tube). One end. The connection sealing cover and the connector are connected to each other. At this time, there is also a case where the port and the connector are locked to each other and are not easily removed.

Prior technical literature Japanese patent literature

Japanese Patent Laid-Open Publication No. 2009-125162

Japanese Patent Publication No. 2: Japanese Patent Laid-Open Publication No. 2009-153588

Japanese Patent Publication No. 3: Japanese Patent Laid-Open Publication No. 2002-283520

Regarding the connection between the prior medical container and the infusion tube, there are the following problems.

Usually, the operator opens the port before connecting the connector to the sealing cover, so that the nutrient in the medical container contacts the outside air. At this time, impurities or bacteria from the outside air may be mixed in the nutrient, which may cause contamination.

Moreover, the inside of the port is opened to the outside air, and thus the leakage of the nutrient to the outside occurs, and there is still room for improvement in consideration of hygiene and safety.

On the other hand, in order to accurately implement the nutrition therapy, it is necessary to correctly connect the sealing cap and the infusion tube side of the connection, but it is also possible to mistakenly connect different infusion tubes or the like arranged for other purposes on the side of the nutrient container, and it is also necessary to Effectively prevent this problem from occurring.

The present invention has been developed in view of the above-described problems, and an object of the present invention is to provide a medical drug delivery device that reliably connects a medical container to an infusion tube while maintaining a liquid-tight state of the medical container, thereby preventing storage in the medical container. Contamination or leakage of liquids such as nutrients facilitates the implementation of good nutritional therapy or enteral nutrition therapy.

In order to accomplish the above object, the present invention provides a medical drug delivery device comprising a medical bag, an infusion tube, and a connector for connecting the two, the medical bag having a storage portion and a port for storing the liquid. The port is formed with a main body portion including a first fastening portion, a flow path of the liquid material, and a sealing portion for sealing the flow path, and the connector has a first engagement with the first fastening portion In the second fastening portion, the first fastening portion and the second fastening portion are engaged with each other by relatively moving the main body portion and the connector in a state in which the main body portion and the connector are in fluid-tight contact. And the sealing state of the said sealing part is canceled, and the said flow path is opened.

Here, the port is a boat-shaped port, and the storage portion is a bag-shaped resin film, and the boat-shaped port may be configured to communicate with the inside of the storage portion.

Further, the main body portion may be formed in a shaft shape, and the connector may have a tubular portion into which the shaft-shaped main body portion can be inserted, and the main body portion may be inserted into the tubular portion of the connector, and the liquid tightness of the both may be In a state of being in contact with each other, the main body portion and the connector are relatively rotated around the shaft, and the first engaging portion and the second engaging portion are engaged with each other, and the flow path is opened.

Further, the sealing portion may be connected to the main body portion by a connection portion thinner than the main body portion, and the main body portion, the sealing portion, and the connecting portion may be integrally formed using the same material, and when the rotation is performed, The sealing portion is relatively moved with respect to the main body portion, whereby the connecting portion is broken, the sealing state of the sealing portion is released, and the flow path is opened.

Further, the sealing portion may have one or more ridges, and the ridges may be coupled to the main body portion via the connecting portion, and the inside of the tubular portion of the connector may be formed in the connector and When the main body portion is in liquid-tight contact, the fitting groove may be fitted to the ridge, and when the rotation is performed, the ridge may be rotated together with the connector and then disconnected.

Further, the main body portion may have a protruding portion that can be inserted into the tubular portion of the connector, and the sealing portion and the upper surface of the protruding portion are coupled by the connecting portion.

Moreover, the present invention provides a medical bag for storing a liquid, which is connected to an infusion tube for infusion of the liquid, or may be configured as follows: a storage portion for storing a liquid and a port, The port is formed with a main body portion having a first engaging portion, a flow path of the liquid material, and a sealing portion for sealing the flow path, and the port is provided with the first fastening portion for use with the infusion tube The connector of the second fastening portion of the fastening portion is connected to the first fastening portion by relatively moving the main body portion and the connector in a state in which the main body portion and the connector are in liquid-tight contact. The second fastening portion is engaged with the second fastening portion, and the sealing portion is released, and the flow path is opened.

Here, the port is a boat-shaped port, and the storage portion is a bag-shaped resin film, and the boat-shaped port may be configured to communicate with the inside of the storage portion.

Further, the main body portion may be formed in a shaft shape, and the connector may have a tubular portion into which the shaft-shaped main body portion can be inserted, and the main body portion may be inserted into the tubular portion of the connector, and the liquid tightness of the both may be In a state of being in contact with each other, the main body portion and the connector are relatively rotated around the shaft, and the first engaging portion and the second engaging portion are engaged with each other, and the flow path is opened.

Further, the sealing portion may be connected to the main body portion by a connection portion thinner than the main body portion, and the main body portion, the sealing portion, and the connecting portion may be integrally formed using the same material, and when the rotation is performed, The sealing portion is relatively moved with respect to the main body portion, whereby the connecting portion is broken, the sealing state of the sealing portion is released, and the flow path is opened.

Further, the sealing portion may have one or more ridges, and the ridges may be coupled to the main body portion via the connecting portion, and the inside of the tubular portion of the connector may be formed in the connector and When the main body portion is in liquid-tight contact, the fitting groove may be fitted to the ridge, and when the rotation is performed, the ridge may be rotated together with the connector and then disconnected.

Further, the ridge may have a plurality of radially extending portions of the main body portion, and the connecting portion may be coupled to the main body portion.

Further, the main body portion may have a protruding portion that can be inserted into the tubular portion of the connector, and the sealing portion and the upper surface of the protruding portion are coupled by the connecting portion.

In the medical drug delivery device of the present invention, a sealing portion for sealing a liquid flow path is formed on the body portion of the port disposed on the medical bag. A first fastening portion is disposed on the main body portion, and a connector that can be engaged with the first fastening portion is disposed on the infusion port side.

When the medical drug delivery device is used, the operator first makes the body portion of the port and the connector fluid tight. Then, the liquid-tight contact state is maintained, and the port and the connector are relatively moved in a specific direction, whereby the engaging portions (the first and second engaging portions) are engaged with each other. By this engagement (locking) operation, the seal of the flow path of the seal portion is opened in a state of being blocked from the outside, and the liquid material in the medical bag can flow to the connector side (the infusion tube side) via the port.

Therefore, in the medical drug delivery device of the present invention, at least until the port and the connector are engaged, the liquid material of the medical bag does not come into contact with the outside air. Further, when the flow path for circulating the liquid material is opened to the infusion tube side, normally, the port and the connector are in a state of being engaged, and the flow path and the outside air are separated from each other and maintained in a liquid-tight state.

According to the present invention, the medical drug delivery device of the present invention can reduce the problem of contamination caused by the contact of the liquid with the external air, and can also control the problem of contamination of the external environment after the flow path is leaked. Ensure nutrient dosing under high hygiene management.

In particular, the present invention, as before, peels off the sealing seal disposed at the front end of the port immediately before use, without the need to open the port or the like, so that the possibility of contamination of the liquid material by the unsealing operation can be avoided.

Further, the medical bag of the present invention can directly fix the port to the connector without using a special sealing cover or the like, so that the number of parts can be reduced and the production cost can be reduced. Further, in the medical drug delivery device of the present invention, since the number of components required is small, the contact area of the liquid material with respect to the medical bag or the connector is small, and in this respect, contamination prevention can also be obtained. effect.

Further, the port and the connector are used as the first and second engaging portions in a dedicated combination with each other, and only the two can be engaged (locked). In this way, each connector will strictly select the connection object, thereby preventing the operator from accidentally connecting the boat port to the other infusion tube side. The medical drug delivery device of the present invention can also exert an efficient safety in this respect.

Further, as described above, the medical drug delivery device of the present invention can achieve the above-described high efficiency and safety by using a port and a connector in combination, but by providing a sealing portion on the boat port, even when the port is used alone, The liquid stored in the medical bag can be separated from the outside air, and is also effective in maintaining liquid tightness.

Simple illustration

Fig. 1 is a schematic view showing the configuration of a nutrient solution administration device 1 according to the first embodiment.

Fig. 2 is a view showing the respective configurations and connection methods of the ship-shaped port 15 (with the male connector) and the connector 20 (female connector).

The third (a) and third (b) drawings show an external view and a cross-sectional view of the configuration of the boat-shaped port 15.

4(a) and 4(b) are an external view and a cross-sectional view showing the configuration of the connector 20.

5(a) to 5(c) are diagrams for explaining the fastening process of the boat-shaped port 15 and the connector 20.

6(a) and 6(b) are partial cross-sectional views showing the positional relationship between the connector 20 before and after the lock and the boat-shaped port 15.

Figs. 7(a) and 7(b) are top views showing the positional relationship between the connector 20 before and after the lock and the boat port 15.

Fig. 8 is a view showing the configuration of the connector 20A and the boat-shaped port 15A of the second embodiment.

Form for implementing the invention

The embodiments of the present invention are described below, but the present invention is of course not limited to the embodiments. Modifications may be made as appropriate without departing from the spirit and scope of the invention.

<Embodiment> (Nutrition agent administration device 1)

Fig. 1 is a view showing the configuration of a medical administration device (nutrient administration device 1) according to the first embodiment. Fig. 2 is a view showing the respective configurations and connection methods of the boat-shaped port 15 and the connector 20 in the nutrient dosing device 1. In addition, the pharmaceutical nutrient mentioned here is not strictly limited to a nutrient, but is a concept including a solution such as a liquid food or physiological saline.

The nutrient administration device 1 shown in Fig. 1 has a medical bag 10, a connector 20, and an infusion tube 30 as an example of a medical container (nutrient container).

The medical bag 10 is composed of a storage unit 100 and a boat-shaped port 15.

The storage unit 100 is formed by two rectangular resin films bonded together by thermocompression bonding, and is configured as a bag-shaped flexible container in which a liquid-form enteral nutrient is stored.

The boat-shaped port 15 is integrally molded of a resin material, and as shown in Fig. 3(b), a flow path 159 for circulating a liquid material is formed inside, and is usually sealed. In the medical bag 10, the boat-shaped port 15 is sandwiched by the adhesive portion of the resin film which is in contact with the storage portion 100, and the flow path 159 is communicated to the inside of the storage portion 100. The inside of the medical bag 10 before use is sealed and kept sterile by the enteral nutrient.

The infusion tube 30 is an infusion line composed of a resin material such as enamel resin or polyvinyl chloride having appropriate flexibility. As shown in Fig. 1, a connector 20 for connecting to the boat-shaped port 15 is disposed at the upstream side end portion. The downstream side end portion is for administering a nutrient to the patient side, and an insertion portion 33 in which a specific port is formed is disposed. In the middle of the infusion tube 30, a conventional drip tube 31 and a drip speed regulator 32 for regulating the flow rate are disposed.

When the nutrient solution administration device 1 is used, as shown in Fig. 1, the boat-shaped port 15 is directed downward, and the storage portion 100 is hung on a specific holder. Further, as shown in Fig. 2, a connector 20 is connected to the boat-shaped port 15 to which the boat-shaped port 15 is connected, and the connection state is locked. Then, the nutrient solution inside the reservoir portion 100 is infused to the patient side via the infusion tube 30.

Here, as a feature of the medical bag 10, the boat-shaped port 15 serves to connect the storage unit 100 side to the connector 20. For the nutrient administration device 1 shown in Fig. 2, one of the pair of connector ports is formed by interconnecting the boat-shaped port 15 and the connector 20. When the operator performs a specific locking operation as described later, the port 15 is combined with the connector 20, and the internal seal of the medical bag 10 is released with the above-described locking action, and the nutrient inside the storage portion 100 is in the shape of a boat. Port 15, can be infused to the side of the infusion tube 30.

Therefore, when the nutrient administration device 1 is connected to the boat-shaped port 15 and the connector 20 in use, the nutrient in the storage portion 100 does not come into contact with the outside air. In this way, the nutrient can be strictly ensured before the administration of the drug and during the administration, and the highly safe nutrient can be administered to the patient.

Hereinafter, each configuration of the boat-shaped port 15 and the connector 20 will be described in detail.

(boat port 15)

Fig. 3(a) is a view showing the appearance of the boat-shaped port (port with the male connector) 15 and the protective cover 16. Fig. 3(b) is a cross-sectional view showing the internal structure of the boat-shaped port 15. For the sake of convenience of explanation, the ship-shaped port 15 shown in Fig. 2 is shown upside down.

The boat-shaped port 15 is formed by integrally molding various conventional resin materials such as polycarbonate (PC), polyethylene terephthalate (PET), polyethylene (PE), and polypropylene (PP). .

The boat-shaped port 15 has a port structure 150 having an outer shape as a basic structure, and the port body portion 150 and the sealing portion 155 are coupled by the joint portions 1550a to 1550c.

The inside of the shaft-shaped port main body portion 150 has a hollow shape as shown in Fig. 3(b), and a flow path 159 is formed. The flow path 159 functions to infuse the nutrient solution of the storage unit 100 to the outside when the nutrient is administered, but the flow path 159 is sealed by the sealing portion 155 before the nutrient is administered (used).

The port body portion 150 has a boat-shaped port base 151 with a certain height. On the top surface 152 of the port base 151, a segment portion 162 and a protruding portion 160 are successively formed in this order.

Segment 162 is a cylinder having a smaller diameter than port base 151. A pair of fastening claws 153, 154 are protruded from the side surface near the upper edge of the segment portion 162.

Each of the fastening claws 153 and 154 is a plate-like body in which a main surface parallel to the top surface 152 is disposed, and on each of the main surfaces facing the top surface 152, convex portions 1531 and 1541 are protruded toward the top surface 152 ( 1541 is not shown).

The top surface of the segment portion 162 functions as an abutting surface 161 that abuts against the abutting surface 200 of the connector 20.

The protruding portion 160 is formed to protrude in a truncated cone shape at the center of the abutting surface 161. The shape of the peripheral surface of the protruding portion 160 coincides with the shape of the inner surface of the connector body portion 21, and is formed to be insertable. When the boat-shaped port 15 is inserted into the interior of the connector 20, the boat-shaped port 15 and the connector 20 are adjusted to be mutually fluid-tight. Sexual contact with the contact portion of the projection 160.

On the upper surface of the port body portion 150 (on the upper surface of the protruding portion 160), the sealing portion 155 has a configuration in which one or more (here, three) ribs 155a to 155c abut each end on the axis of the protruding portion 160. The radiation is formed in a radial shape (three arrows) so as to form an angle of 120° between the main surface and the main surface. Specifically, as shown in FIG. 3(b), the sealing portion 155 is formed in a root portion of each of the ridges 155a to 155c by a joint portion (thin portion) 1550a having a thickness thinner than a thickness of a member of the port body portion 150. 1550c is coupled to the upper surface of the protruding portion 160 on the port body portion 150 side.

Further, under the ridges 155a to 155c, notches 156a to 156c which communicate with the flow path 159 and have a short grid-like cross-sectional shape are provided (see Fig. 6(b)).

Further, an inside of the boat-shaped port 15 is provided with an opening 158 that communicates with the flow path 159.

Then, the protective cover 16 is used to protect the boat-shaped port 15 on the medical bag 10 before use, and has a protruding portion 160 and a segment portion 162, a protective cover body portion 165 for covering the sealing portion 155, and the engaging claw 153. 154 snap-fit flanges 166, 167. Similarly to the boat-shaped port 15, the protective cover 16 is integrally formed by injection molding a resin material. As shown in Fig. 3(a), the protective cover 16 is rotated around the segment portion 162 in the direction of the arrow (the opposite direction to the second direction of Fig. 2), whereby the boat-shaped port 15 can be detached.

(connector 20)

Returning to Fig. 2, the connector 20 is formed integrally with the same material (here, referred to as a resin material) after injection molding, similarly to the boat-shaped port 15. There is a connector body portion 21 having an outer shape that is tapered toward the front end and a hollow cylindrical portion inside. The outer peripheral surface is provided with a pair of plate-shaped operation portions 205 and 206, which are convenient for the operator to grasp with fingers. The inside of the connector body portion 21 is formed to conform to the shape of the port body portion 150 of the connector 20 that is liquid-tightly inserted therein. The front end portion 2033 (lower end portion in Fig. 2) extends from the connector body portion 21 to the infusion tube 30. On the other hand, in the upper end portion of the connector main body portion 21 on the upstream side in the infusion direction, the main faces of the plate-shaped connector base portion 22 are disposed to be orthogonal to the axis of the connector 20. One of the main faces of the connector base 22 (the upper main face in FIG. 2) functions as an abutting surface 200 that abuts against the abutment surface 161 of the boat-shaped port 15.

Fig. 4(a) is a view showing the configuration of the connector 20 as seen from the side of the abutting surface 200. Fig. 4(b) is a cross-sectional view showing the internal structure of the connector 20 (a cross-sectional view in which the angle around the axis of the connector main body 21 is set to 180° via the fitting groove 2030b). 5(a), 5(b), and 5(c) are diagrams showing the fastening process of the fastening claw 153 and the fastening flange 202 as viewed from the axial side of the boat-shaped port 15 (for convenience) Note that the connecting portion of the fastening claw 153 and the segment portion 160 is indicated by a cross section).

As shown in Fig. 4(a), the connector base 22 has a disk body having an opening portion 2031 communicating with the connector body portion 21 at the center as a basic structure, and has a core of the connector body portion 21. It is constituted as a symmetry axis and the circumferential portion protrudes to the outside. A pair of fastening flanges 201, 202 are formed on the circumferential portion of the projection, respectively, which are engageable with one of the hook-shaped claws 153, 154 of the boat-shaped port 15.

As shown in FIGS. 4 and 5, the engaging flanges 201 and 202 are composed of flange main bodies 2012 and 2022, side sill portions 2013 and 2023, and engaging claw abutting portions 2011 and 2021. The flange bodies 2012, 2022 are ridges that are formed along the edges of the abutment faces 200.

The side sills 2013, 2023 are along the sides of the flange bodies 2012, 2022, and are provided with a plate of a desired height relative to the abutment surface 200, which should be facilitated between the flange bodies 2012, 2022 and the abutment surface 200. The fastening claws 153, 154 are inserted.

The engaging claw abutting portions 2011 and 2021 are connected to the side sill portions 2013 and 2023 and are angularly projecting from the flange bodies 2012 and 2022 to the axial center of the connector 20.

Therefore, in the splicing portions of the engaging claw abutting portions 2011 and 2021 and the side sill portions 2013 and 2023, the gusset portions 2013 and 2023 are notched in the thickness direction, and the concave portions 2014 and 2024 are formed (2014) Relationship is not shown). The concave portions 2014 and 2024 are for introducing the convex portions 1531 and 1541 of the engaging claws 153 and 154 to be fitted.

Further, since the metal mold used in the resin molding of the connector 20 is formed, the openings 2010 and 2020 are formed in the portion of the contact surface 200 directly below the side portions 2013 and 2023.

Moreover, on the display surface 204 that contacts the inner surface of the abutting surface 200, in order to facilitate the operator to correctly recognize the direction in which the connector 20 is locked on the boat-shaped port 15, a "stop" text and an arrow indicating the direction of rotation are displayed. Mark and so on. Further, of course, the content displayed on the display surface 204 is not limited to the description, and the display may be omitted.

On the other hand, the inside of the connector body portion 21 is formed into a shape into which the port body portion 150 can be inserted. Further, as shown in FIGS. 4(a) and 4(b), the inner wall is slit in the thickness direction in the vicinity of the opening portion 2031, whereby three fitting grooves 2030a to 2030c are formed at equal intervals. (An angle of 120° is formed between each other and the angle around the axis of the connector body portion 21, respectively). The fitting grooves 2030a to 2030c are respectively fitted to the respective ribs 155a to 155c provided on the boat-shaped port 15.

The opening portion 2031 of the connector main body portion 21 and the distal end portion 2033 are cut into a stepped shape toward the distal end portion 2033 side, and a locking segment portion 2032 is provided. The fastening portion 2032 prevents the end portion of the infusion tube 30 from falling off, whereby the connector 20 and the infusion tube 30 are integrally coupled.

(about the effect when administering a nutrient)

The procedure for administering a nutrient to a patient using the nutrient administration device 1 configured as above will be described.

First, an operator such as a doctor or a nurse hangs one end of the medical bag 10 on the stand in accordance with the method shown in Fig. 1, and the boat port 15 faces downward. On the other hand, one end of the infusion tube 30 is led to the connector 20, and the end portion of the infusion tube 30 is fastened to the end portion of the connector body portion 20, and the infusion tube 30 is extended from the distal end portion 2033. Alternatively, the connector 20 and the infusion tube 30 may be pre-connected at the manufacturing stage or before shipment.

On the other hand, the insertion portion 33 provided on the other end side of the infusion tube 30 is connected to the specific infusion tube end to which the patient side is disposed.

Then, the operator holds the abutting surface 200 of the connector 20 upward according to the arrangement relationship shown in Fig. 2 . Moreover, in order to prevent the engaging flanges 201, 202 from interfering with the engaging claws 153, 154, attention should be paid to the angle around the core of the connector 20, and the abutting surface 200 of the connector 20 abuts the boat-shaped port 15. The surface 161 abuts (in the second figure, the first direction indicated by the arrow mark in the vertical direction). In this manner, the operator brings the connector 20 into contact with the boat-shaped port 15 for relative movement. At this time, the inside of the connector body portion 21 is inserted with the protruding portion 160 of the boat-shaped port 15 and the sealing portion 155 (the ribs 155a to 155c).

Once the above operation is performed, the outer peripheral surface of the protruding portion 160 is in liquid-tight contact with the inner surface of the connector body portion 21, and the inside of the connector body portion 21 and the protruding portion 160 of the boat-shaped port 15 and the sealing portion 155 are separated from the outside air. The partition is formed in a state in which the connector 20 is connected to the boat port 15.

Then, the operator holds (locks) the connection state of the connector 20 to the boat port 15. Specifically, the operation portions 205 and 206 are sandwiched by the fingers, and the connector 20 is relatively rotated to an angle of 60° with respect to the boat-shaped port 15 around the axis of the connector 20 (in FIG. 2, reference is made to the curved shape). The second direction indicated by the arrow mark). At this time, the outer peripheral surface of the protruding portion 160 and the inner peripheral surface of the connector main body portion 21 are maintained in a liquid-tight state and slid with each other, and relatively rotated around the axis of the connector 20. Further, before the above-described rotating operation, the engaging claws 153 and 154 (see FIG. 5(a)) on the upstream side in the rotational direction are further inserted into the abutting surface 200 and the above-described rotating operation than the edge portions 2013 and 2023 (see FIG. 5(a)). Between the side sills 2013 and 2023, the side sills 2013 and 2023 are pushed forward in the direction away from the abutting surface 200 (refer to the respective arrow marks in Fig. 5(b)). Further, the engaging claws 153, 154 finally come into contact with the engaging claw abutting portions 2011, 2021, and their traveling is prevented. At this time, the convex portions 1531 and 1541 of the engaging claws 153 and 154 are fitted to the concave portions 2014 and 2024 provided on the side portions 2013 and 2023 (Fig. 5(c)). By this fitting, the engagement (locking) action of the connector 20 with the boat port 15 is completed.

After the locking operation is completed, the connector 20 and the boat-shaped port 15 are firmly coupled to each other in a state of being connected to each other, so that it is difficult to detach.

Here, before the locking of the 6th (a) figure, the locking state of the 6th (b) is used to respectively explain the arrangement relationship of the connector 20 and the boat-shaped port 15, and by the ribs 155a to 155c (the sealing portion) 155) Diagram of the infusion opening mechanism. In the figure, the connector 20 is shown in a cross-sectional structure that cuts through the fitting grooves 3020b and 3020c and penetrates the line around the axis of the connector body 21 by an angle of 120°. Further, the seventh (a) and seventh (b) drawings respectively show the arrangement relationship between the connector 20 and the boat-shaped port 15 in the locked state and the locked state, and the front end portion 2033 of the connector is along the axis of the connector 20. Look down at the front view. In the seventh (a) and seventh (b) drawings, the outlines of the fastening flanges 201 and 202 are shown by broken lines.

As shown in FIG. 2 described above, after the connector 20 is immediately connected to the boat-shaped port 15, the ribs 155a to 155c are in a state of being fitted only to the fitting grooves 2030a to 2030c only inside the connector body portion 21 (refer to Figure 6(a), Figure 7(a)). In this state, the operator operates the operation units 205 and 206 to perform the lock operation as described above. That is, with respect to the boat-shaped port 15, the connector 20 has the axis of the connector main body portion 21 as a rotation axis, and is rotated by an angle of 60 degrees around the axis. Thereby, each of the ridges 155a to 155c rotates together with the connector 20 in a state of being fitted to the fitting grooves 2030a to 2030c, and rotates around the rotating shaft from the original position to a position shifted by 60 degrees. Along with this rotation, the joints 1550a to 1550c at the roots of the ridges 155a to 155c are crushed and broken. Moreover, the notches 156a to 156c appear at positions facing the inside of the connector body portion 21 (Fig. 6(b), Fig. 7(b)). Here, in the sixth figure (b), the core of the connector body portion 21 serves as a rotation axis, and the respective ribs 155a to 155c are rotated from the original position to an angle of 60°, and the joint portions 1550a to 1550c are broken. Notches 156a to 156c, which show the boat-shaped port 15 in the state of the notches 156a to 156c.

As described above, with the locking operation, the ridges 155a to 155c are rotated, and the joint portions 1550a to 1550c are broken, whereby the flow path 159 releases the sealed state of the seal portion 155, and the notches 156a to 156c are communicated only to the connector 20 side. . In the meantime, the outer peripheral surface of the protruding portion 160 and the inner peripheral surface of the connector main body portion 21 are maintained in a liquid-tight state. As shown in Fig. 1, the boat-shaped port 15 of the medical bag 10 is suspended downward during use, so that the nutrient in the storage unit 100 flows to the inside of the boat-shaped port 15 and the connector body portion 21 due to its own weight, and the infusion tube is interposed. 30 doses to the patient side. As described above, in the nutrient dosing apparatus 1, the nutrient is started when the locking operation of the connector 20 and the boat port 15 is completed, and when the flow path 159 of the boat port 15 is opened, the nutrient is also normally blocked from the outside air.

Thereby, when the nutrient is administered to the patient, the notches 156a to 156c are surely prevented from contaminating the nutrients from the outside air, so that it is very effective in hygiene management. The nutrient dosing device 1 is different from the previous configuration in which the connector 20 is connected to the medical bag before the connector 20 is required to be peeled off, after the connector 20 and the port 15 are connected, and the connector 20 and the boat are completed. The locking operation of the port 15 releases the sealing of the boat-shaped port 15 and provides excellent safety in terms of hygiene management.

Further, with the nutrient administration device 1, the boat-shaped port 15 can be directly connected and fixed to the connector 20 side by the above-described specific operation, without using a special sealing cover or the like. Therefore, the number of parts can be reduced and the production cost can be reduced. Further, since the number of components is small, the contact area between the medical bag 10 and the connector 20 which are in contact with the liquid material can be reduced, so that contamination can be prevented in this respect, and high reliability can be exhibited.

Moreover, the connector 20 and the boat-shaped port 15 use the respective engaging portions which are specifically combined with each other and are closely formed (here, the engaging claws 153, 154 and the fastening flanges 201, 202, the sealing portion 155, and the fitting groove 2030a). To 2030c), in order to connect and lock properly. Because of such a strict connection selectivity, even if the operator mistakenly connects the boat-shaped port 15 to other infusion lines disposed on the patient side, it is possible to surely prevent the misconnection. As described above, the nutrient dosing device 1 can also exhibit high safety in preventing human medical accidents.

Further, with respect to the boat-shaped port 15, the connecting portions 1550a to 1550c are completely broken by the rotation of the connector 20, and sometimes the sealing portion 155 is also separated, but the ribs 155a to 155c are kept fitted to the fitting grooves 2030a to 2030c. In this state, the seal portion 155 separated from the boat-shaped port 15 does not flow to the side of the infusion tube 30.

Further, the engagement operation between the connector 20 and the boat-shaped port 15 and the subsequent opening operation of the flow path 159 may be performed as long as they move relative to each other. Therefore, these operations may be performed when the boat-shaped port 15 is moved with respect to the connector 20 or when the connector 20 is moved with respect to the boat-shaped port 15.

<Embodiment 2>

Next, in the second embodiment, each of the connector 20A side is a male connector, and the boat port 15A side is a female connector. For convenience of explanation in Fig. 8, the connector 20A is shown above and the boat-shaped port 15A is shown below. However, as shown in Fig. 1 and Fig. 2, the arrangement of the upper and lower sides needs to be reversed.

As a difference from the first embodiment, in the boat-shaped port 15A, the tubular portion 163 is formed on the boat-shaped port base portion 151A so as to surround the abutting surface 152A of the upper surface thereof. The inner diameter of the tubular portion 163 is adjusted to match the outer diameter of the body portion 21A of the connector 20A, and the body portion 21A of the connector 20A is inserted (or pressed) into the cylindrical portion 163 during use.

Around the opening 164 of the tubular portion 163, one of the pair of engaging claws 153A and 154A having the same configuration as 153 and 154 as described above is formed. At the center of the abutting surface 161A, a sealing portion 155A identical to that of 155 is formed through the same connecting portion as 1550a to 1550c, and a flow path communicating with the boat-shaped port 15A is formed directly under each of the ribs 155a to 155c. Notch. The flow path and the notch have the same configuration as 159 and 156a to 156c, respectively.

On the other hand, the connector 20A has a body portion 21A and a pair of fastening flanges 201A, 202A.

The main body portion 21A is a cylindrical body, and an abutting surface 200A that abuts against the abutting surface 161A of the boat-shaped port 15A is disposed on the lower surface thereof, and a display surface 204A is disposed on the upper surface thereof.

On the surface of the display surface 204A, the same text as that of 204 and an arrow mark are attached, and an infusion tube 30 is connected at the center thereof.

The fastening flanges 201A and 202A are the same as the 201 and 202, and are configured to be engageable with the fastening claws 153 and 154, and are formed at equal intervals on the side surface of the main body portion 21A. In the configuration shown in Fig. 8, the components of the engaging flanges 201A and 202A are covered on the box-shaped casing, and are not visible from the outside.

Further, in the configuration shown in Fig. 8, a circumferential ridge (a tubular portion) surrounding the display surface 204A is provided, but it is not essential.

At the center of the abutting surface 200A, a radial (three-arrow-shaped) fitting groove 2030A having a shape that can be fitted to each of the ribs 155a to 155c of the sealing portion 155 is formed.

Further, in the main body portion 21A, a total of three connector holes L1, L2, and L3 are formed so as to penetrate the abutting surface 200A and the display surface 204A along the axial direction of the cylinder. In the connector holes L1, L2, and L3, the opening portions on the abutting surface 200A side are connected to the notch formed directly under the sealing portion 155 after the connector 20A is locked with the boat-shaped port 15A, and the display surface 204A side Each of the openings is formed to be connectable to the inside of the infusion tube 30.

The connector holes L1, L2, and L3 have a circular cross-sectional shape here, but may be a rectangular cross-sectional shape or an adjustment operation for increasing the number of connector holes or the like.

When the boat-shaped port 15A having the above configuration and the connector 20A are used, it also has almost the same effects as the nutrient dosing device 1.

That is, when the operator connects the connector 20A on the boat-shaped port 15A, it should be noted that the fastening claws 153A, 154A and the fastening flanges 201A, 202A do not interfere with each other, and the body portion 21A of the connector 20A is pressed into the boat-shaped port 15A. In the cylindrical portion 163. Then, the sealing portion 155A is fitted into the fitting groove 2030A, and the connector body portion 21A is completely pressed into the tubular portion 163 until it abuts against the abutting faces 200A and 161A.

By this operation, the side surface of the connector main body portion 21A is in fluid-tight contact with the inner surface of the tubular portion 163, and the connection between the connector 20A and the boat-shaped port 15A is completed.

Then, while the connection state is maintained, the operator rotates the connector 20A by 60 degrees around the axis of the connector 20A, and the fastening claws 153A, 154A are respectively engaged to the fastening flanges 201A, 202A. Perform a locking action. With this locking operation, the sealing portion 155A fitted to the fitting portion 2030A is rotationally moved, the coupling portion is broken, and the notch is presented to face the connector holes L1 to L3. Thereby, the nutrient solution in the reservoir portion 100 can flow to the side of the infusion tube 30 via the connector holes L1 to L3.

According to the above operation, in the second embodiment, as in the first embodiment, when the nutrient in the storage unit 100 is not in contact with the outside air, the sealing of the boat-shaped port 15A can be released. Thereby, it is possible to prevent contamination of the nutrient by the intrusion of foreign matter, and to ensure that the nutrient is administered to the patient. Further, normally, the sealing of the boat-shaped port 15A is released in a state where the boat-shaped port 15A is connected to the connector 20A, so that the problem of leakage of the nutrient agent from the boat-shaped port 15A can be prevented.

Further, in the second embodiment, since the boat-shaped port 15A and the connector 20A have a strict connection selectivity with respect to each other in the configuration, it is possible to surely prevent the problem that the other infusion tubes are erroneously connected to the boat-shaped port 15A.

Further, in Fig. 8, a configuration in which the fitting groove 2030A and the connector holes L1 to L3 are formed in the connector 20A is exemplified. In addition, as shown in the connector 20 of the first embodiment, a cylindrical space (flow path) that communicates with the infusion tube 30 is formed inside the connector body portion 21A, and the cylindrical inner wall can also be The fitting grooves 2030a to 2030c which are engageable with the ribs 155a to 155c are formed.

<Other matters>

In the above embodiment, the sealing portion 155 in which the three ridges 155a to 155c are combined in a radial shape (three arrows) is exemplified, but the number of the ribs is not limited thereto, and may be one or two. Can be more than four.

Further, instead of providing the ridges, a column body (columnar body) may be formed in parallel with the axis of the connector in the longitudinal direction, and a joint portion including the thin portion may be formed around the root portion of the column body. Directly below, a hole corresponding to the above-mentioned notch is formed. At this time, the connector is formed as a recess into which the column can be inserted instead of the fitting groove, and each column is broken from the root portion with a locking operation, and a notch (a hole) is formed, thereby achieving sealing of the port. Alternatively, a combination of a sealing portion having a simple three-dimensional shape (square shape, polygonal column shape, and the like) and a fitting groove into which the fitting can be fitted may be used. However, regardless of the configuration, the liquid-tight state must be maintained after the connector is connected to the boat-shaped port. It should be noted that the inside of the connector body portion of the open flow path does not come into contact with the outside air.

Further, in order to improve the liquid-tightness between the boat-shaped port and the connector, a sealing member of a gasket or a crucible material may be disposed on, for example, the abutting surface of the boat-shaped port or the surface of the protruding portion. Further, in order to planarize the mutual contact surface between the boat-shaped port and the connector, it is also effective to perform surface treatment.

Further, in the boat-shaped port, the protruding portion is not provided on the abutting surface, but the sealing portion is directly provided on the abutting surface, and the flow path can be prevented from coming into contact with the outside air when the flow path is opened. However, it is preferable to provide the above-mentioned protruding portion in order to ensure good liquid-tightness between the boat-shaped port and the connector before locking, so that the liquid-tight contact area between the boat-shaped port and the connector is increased. Therefore, as shown in the second embodiment, it is preferable to ensure the liquid-tight contact between the tubular portion and the connector main portion as much as possible.

Further, the connector and the boat-shaped port are not limited to the configuration in which the engaging claw and the engaging flange are engaged, and a fastening mechanism other than the above may be used. For example, the connector and the boat port can also be snapped together.

The medical drug delivery device of the present invention, as shown by the illustrated boat-shaped port 15 and the connector 20, can also exhibit a remarkable effect when the male connector and the female connector which are produced as a mutual combination are used together. However, even when the storage portion 100 provided with the boat-shaped port 15 is used alone, the sealing portion 155 can be used until the connector 20 is locked, and the high sealing property inside the medical bag 100 can be exhibited, which is large in this respect. Advantage.

In the embodiment, a container including a soft resin film is exemplified as the storage unit 100. However, this is merely an example of a medical container, and the material is not limited. Other paper containers, glass bottles, metal containers, syringes, and the like can be used.

Further, of course, the liquid material stored in the container is not limited to the enteral nutrient, and may be a different liquid such as various nutrients to be administered to the patient, in addition to the substance administered by the intravenous administration.

Industrial availability

The medical drug delivery device of the present invention is widely used in a medical site where enteral nutrition therapy is performed, for example, when a liquid material stored in a medical container is administered to a patient via an infusion tube, and the usable range is extremely wide.

1. . . Nutrient dosage device (medical drug delivery device)

10. . . Nutrient container (medical container)

15. . . Boat port (with male connector)

15A. . . Boat port (with female connector)

16. . . Protective cover

20. . . Connector (female connector)

20A. . . Connector (male connector)

21, 21A. . . Connector body

twenty two. . . Connector base

30. . . Infusion tube

31. . . Drip

32. . . Drip speed regulator

33. . . Insertion

100. . . Storage department

150. . . Boat port body

151, 151A. . . Boat port base

152. . . Top surface

152A. . . Abutment surface

153, 153A, 154, 154A. . . Buckle claw (first fastening part)

155, 155A. . . Sealing part

155a-155c. . . Rib

156a-156c. . . notch

157. . . Screw

158, 2031. . . Opening

159. . . Flow path

160. . . Protrusion

161, 161A, 200, 200A. . . Abutment surface

162. . . Segment

163. . . Cylindrical part

164. . . Opening

165. . . Protective cover body

166, 167. . . Fitting flange

201, 201A, 202, 202A. . . Fitting flange (second snap)

203. . . Connector body

204, 204A. . . Display surface

205, 206. . . Operation department

1550a-1550c. . . Connecting part (thin wall part)

1531, 1541. . . Convex

2010, 2020. . . hole

2011, 2021. . . Buckle claw abutment

2012, 2022. . . Flange body

2013, 2023. . . Side

2014, 2024. . . Concave

2030a-2030c, 2030A. . . Chimeric groove

2032. . . Buckle section

2033. . . Front end

3020b, 3020c. . . Chimeric groove

L1, L2, L3. . . Connector hole

Fig. 1 is a schematic view showing the configuration of a nutrient solution administration device 1 according to the first embodiment.

Fig. 2 is a view showing the respective configurations and connection methods of the ship-shaped port 15 (with the male connector) and the connector 20 (female connector).

3(a) and 3(b) are an external view and a cross-sectional view showing the configuration of the boat-shaped port 15.

4(a) and 4(b) are an external view and a cross-sectional view showing the configuration of the connector 20.

5(a) to 5(c) are diagrams for explaining the fastening process of the boat-shaped port 15 and the connector 20.

6(a) and 6(b) are partial cross-sectional views showing the positional relationship between the connector 20 before and after the lock and the boat-shaped port 15.

Figs. 7(a) and 7(b) are top views showing the positional relationship between the connector 20 before and after the lock and the boat port 15.

Fig. 8 is a view showing the configuration of the connector 20A and the boat-shaped port 15A of the second embodiment.

1. . . Nutrient dosage device (medical drug delivery device)

10. . . Nutrient container (medical container)

15. . . Boat port (with male connector)

20. . . Connector (female connector)

twenty one. . . Connector body

30. . . Infusion tube

31. . . Drip

32. . . Drip speed regulator

33. . . Insertion

100. . . Storage department

2033. . . Front end

Claims (6)

A medical drug delivery device comprising a medical bag, an infusion tube, and a connector for connecting the two, wherein the medical bag has a storage portion for storing a liquid and a port, and the port is formed with a first engaging portion having a shaft-shaped main body portion, a flow path of the liquid material, and a sealing portion for sealing the flow path, wherein the main body portion has a protruding portion into which the tubular portion of the connector is inserted, The sealing portion has one or more ridges that are connected to the upper surface of the protruding portion by a connecting portion that is thinner than the main body portion, and the main body portion, the sealing portion, and the connecting portion are made of the same material. Formed integrally, the connector has a second fastening portion that can be engaged with the first fastening portion, and a tubular portion that can be inserted into the main body portion, and is formed inside the tubular portion of the connector a fitting groove that can be fitted into the ridge when the connector is in fluid-tight contact with the main body portion, and the main body portion is inserted into the tubular portion of the connector to make the two liquid-tight In a state of contact, the main body portion and the connector are relatively rotated about the shaft, whereby the first fastening portion and the second fastening portion are engaged with each other, and the protruding strip is coupled with the connector Rotating together to disconnect the above connecting portion, opening the flow road. The medical drug delivery device according to claim 1, wherein the port is a boat-shaped port, and the resin film of the storage portion is a bag-shaped resin film, and the ship-shaped port is disposed to communicate with the inside thereof. The medical drug delivery device according to claim 1 or 2, wherein the ridge has a plurality of radially extending portions of the body portion, and the connecting portion is coupled to the body portion. A medical bag for storing a liquid and connected to an infusion tube for infusion of the liquid, characterized by having a storage portion for storing a liquid and a port, wherein the port is formed with a main body portion having a first engaging portion and having a shaft shape, a flow path of the liquid material, and a sealing portion for sealing the flow path, wherein the main body portion has a protrusion that can be inserted into the tubular portion of the connector The sealing portion has one or more ridges that are connected to the upper surface of the protruding portion by a connecting portion that is thinner than the main portion, and the main body portion, the sealing portion, and the connecting portion are used. The same material is integrally formed, and the port is connected to the infusion tube by using a connector having a second fastening portion that can be engaged with the first fastening portion and a tubular portion that can be inserted into the main body portion. The inside of the cylindrical portion of the connector is formed to make the connection a fitting groove that can be fitted into the ridge when the connector is in liquid-tight contact with the main body portion, and the main body portion is inserted into the tubular portion of the connector to bring the two into liquid-tight contact. The main body portion and the connector are relatively rotated about the shaft, whereby the first fastening portion and the second fastening portion are engaged with each other, and the protruding bar rotates together with the connector The connecting portion is disconnected, and the flow path is opened. The medical bag according to claim 4, wherein the port is a boat-shaped port, and the storage portion is a bag-shaped resin film, and the ship-shaped port is disposed in communication with the inside thereof. The medical bag according to claim 4, wherein the ridge has a plurality of radially extending portions of the body portion, and the connecting portion is coupled to the body portion.