Port and liquid medicine bag

Abstract

The present invention provides a port and a liquid medicine bag that can more reliably prevent a sealing plug from falling off from a port body. The port of the present invention has: a sealing plug that can be pierced by a hollow needle; a hollow port body in which the sealing plug is disposed inside; an anti-drop component mounted on the port body. The port body has: a cylindrical sealed portion in which the sealing plug is enclosed; a fitting portion formed on the sealed portion. The anti-drop component has: a main body portion having a first surface, and in the sealed portion, the first surface faces the first end side of the sealed portion; a restricting portion formed on the first surface of the main body portion to restrict the movement of the sealing plug toward the second end side of the sealed portion; a fitting portion that is fitted onto the fitting portion of the port body.

Description

[0001] This application is a divisional application of the patent application with the filing date of December 17, 2015, application number 201580069200.5, and invention title "Port and Liquid Medicine Bag", the entire content of which is incorporated herein by reference.

[0002] Cross-reference to related applications

[0003] This application claims the priority of Japanese Patent Application No. 2014-256410 and is incorporated herein by reference in its entirety. Technical field

[0004] The present invention relates to a port installed on a bag body for containing a liquid medicine, and a liquid medicine bag having the port. Background art

[0005] Conventionally, a liquid medicine bag for containing a liquid medicine (for example, a liquid containing a medicine or a liquid containing a nutrient, etc.) has been provided. As Figure 17 shown, the liquid medicine bag 4 has: a bag body 40 filled with a liquid medicine inside, and a port 41 installed on the bag body 40 (for example, refer to Patent Document 1).

[0006] The bag body 40 has a pair of sheet members 400 facing each other. The outer peripheral edges of the pair of sheet members 400 are fused to each other.

[0007] As Figure 18 shown, the port 41 has: a sealing plug 410 that can be pierced by a hollow needle; a hollow port body 411 in which the sealing plug 410 is disposed inside.

[0008] The port body 411 has: a cylindrical sealed portion 411a in which the sealing plug 410 is enclosed; a cylindrical connecting portion 411b disposed between the pair of sheet members 400, and the connecting portion 411b is continuous with the sealed portion 411a and communicates its inside with the inside of the sealed portion 411a. The outer periphery of the connecting portion 411b is fused to the pair of sheet members 400.

[0009] In a state where the hollow needle pierces the sealing plug 410, the liquid medicine bag 4 is arranged such that the sealed portion 411a of the port 41 faces downward (below the bag body 40). In this state, the liquid medicine in the bag body 40 can be administered to a patient via the hollow needle.

[0010] In addition, in the liquid medicine bag 4 having the above structure, for example, if the sealed portion 411a faces downward, a hydraulic pressure generated by the weight of the liquid medicine acts on the sealing plug 410. That is, the weight of the liquid medicine in the bag body 40 acts as a force to cause the sealing plug 410 to fall off from the port body 411.

[0011] Therefore, in such a liquid medicine bag 4, it is necessary to prevent the sealing plug 410 from falling off the port body 411. Along with this, the port 41 has, for example, an anti - detachment portion 411c which is continuously formed with the sealed portion 411a and abuts against the sealing plug 410.

[0012] The anti - detachment portion 411c has a base end connected to the sealed portion 411a and a front end on the opposite side of the base end. The front - end side of the anti - detachment portion 411c is folded back toward the sealing plug 410 side, and the front end abuts against the sealing plug 410 over the entire circumference in the circumferential direction. Thereby, it is possible to prevent the sealing plug 410 from falling off the port body 411.

[0013] In the port 41 with the above - described structure, the anti - detachment portion 411c is formed by pre - heating a portion (hereinafter referred to as "the folding margin portion") 411d that extends straight from the sealed portion 411a and then performing a bending process.

[0014] Therefore, the manufacture of the port 41 requires dedicated equipment for forming the anti - detachment portion 411c. In addition, when manufacturing the port 41, since processing needs to be carried out under heating conditions, the manufacturing efficiency is not high. Moreover, for the manufacturing method of the port 41, shape deviations may occur at different positions in the circumferential direction of the anti - detachment portion 411c. Therefore, in the port 41 manufactured by the above - described manufacturing method, it is possible that the sealing plug 410 cannot be uniformly pressed by the entire circumference of the front end of the anti - detachment portion 411c.

[0015] Therefore, in the port 41, due to the external force acting on the sealing plug 410, the sealing plug 410 may fall off the port body 411.

[0016] Prior - art documents

[0017] Patent documents

[0018] Patent Document 1: Japanese Patent Application Laid - Open No. 2014 - 36001 Summary of the Invention

[0019] Problems to be Solved by the Invention

[0020] Therefore, the present invention provides a port that can more reliably prevent a sealing plug from falling off a port body, and a liquid medicine bag having the port.

[0021] Means for Solving the Problems

[0022] The port of the present invention has: a sealing plug that can be pierced by a hollow needle; a hollow port body in which the sealing plug is disposed; an anti-disengagement member mounted on the port body. The port body has: a cylindrical sealed portion having a first end and a second end opposite to the first end, and enclosing the sealing plug; a cylindrical connecting portion connected to the first end of the sealed portion and peripherally connected to a bag body filled with a liquid medicine; a fitting portion formed on one of the inner peripheral surface, the outer peripheral surface, or the second end of the sealed portion. The anti-disengagement member has: a main body portion having a first surface that faces the first end side of the sealed portion within the sealed portion; a restricting portion formed on the first surface of the main body portion to restrict the movement of the sealing plug toward the second end side of the sealed portion; and a fitting portion that fits onto the fitting portion of the port body.

[0023] The above port can also be configured such that the fitting portion is one of a concave portion or a convex portion, and the engaging portion is the other of a concave portion or a convex portion.

[0024] The above port can also be configured such that the fitting portion of the anti-disengagement member contacts a part of the fitting portion of the port body at all circumferential positions or a plurality of positions in the circumferential direction of the fitting portion.

[0025] In addition, the above port can also be configured such that the sealing plug has a groove portion formed on the surface facing the anti-disengagement member, and the restricting portion of the anti-disengagement member protrudes from the first surface of the main body portion into the groove portion.

[0026] The liquid medicine bag of the present invention has a bag body filled with a liquid medicine inside and any one of the above ports, and the connecting portion of the port is connected to the bag body. Description of the Drawings

[0027] Figure 1 is a front view of a liquid medicine bag according to an embodiment of the present invention.

[0028] Figure 2 is a longitudinal sectional view of the port of this embodiment.

[0029] Figure 3 is a longitudinal sectional view of the sealing plug of this embodiment.

[0030] Figure 4 is a longitudinal sectional view of the port body of this embodiment.

[0031] Figure 5 is a longitudinal sectional view of the anti-disengagement member of this embodiment.

[0032] Figure 6 is an enlarged view of the port of this embodiment, which is Figure 2An enlarged view of Region VI.

[0033] Figure 7 is a longitudinal sectional view of the port of this embodiment, showing a state in which a hollow needle pierces through a sealing plug.

[0034] Figure 8 is a longitudinal sectional view of the port of this embodiment, showing a state in which the hollow needle piercing through the sealing plug is withdrawn.

[0035] Figure 9 is a longitudinal sectional view of the port of another embodiment of the present invention.

[0036] Figure 10 is a longitudinal sectional view of the port of another embodiment of the present invention.

[0037] Figure 11 is a partial longitudinal sectional view of the port of still another embodiment of the present invention.

[0038] Figure 12 is a partial longitudinal sectional view of the port of still another embodiment of the present invention.

[0039] Figure 13 is a partial longitudinal sectional view of the port of still another embodiment of the present invention.

[0040] Figure 14 is a partial longitudinal sectional view of the port of still another embodiment of the present invention.

[0041] Figure 15 is a partial longitudinal sectional view of the port of still another embodiment of the present invention.

[0042] Figure 16 is a partial enlarged longitudinal sectional view of the port of still another embodiment of the present invention.

[0043] Figure 17 is a front view of an existing liquid medicine bag.

[0044] Figure 18 is a longitudinal sectional view of an existing port. Detailed Embodiment

[0045] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

[0046] As Figure 1 shown, the liquid medicine bag 1 has: a bag body 2 filled with a liquid medicine (for example, a liquid containing a medicine for infusion or a liquid containing a nutrient); and a port 3 attached to the bag body 2.

[0047] The bag body 2 includes a pair of overlapping sheet members 20. The bag body 2 has a sealing portion 21 that fuses the outer peripheral edges of both of the pair of sheet members 20 to each other. The bag body 2 has a storage chamber 22 defined by the pair of sheet members 20 and the sealing portion 21.

[0048] In the present embodiment, the bag body 2 has a weak sealing portion 23 that joins the pair of sheet members 20 in a peelable manner.

[0049] The weak sealing portion 23 is formed to divide the storage chamber 22 into a plurality of spaces. In the present embodiment, the weak sealing portion 23 divides the storage chamber 22 into two spaces. That is, the storage chamber 22 has two spaces 22a and 22b that can communicate with each other. Further, in the present embodiment, one space 22a of the storage chamber 22 is defined as a first storage chamber 22a, and the other space 22b of the storage chamber 22 is defined as a second storage chamber 22b, and the following description will be given.

[0050] In the first storage chamber 22a and the second storage chamber 22b, different types of liquid medicines are stored respectively. In the bag body 2, if the weak sealing portion 23 is peeled off, the first storage chamber 22a and the second storage chamber 22b communicate with each other. As a result, the liquid medicine in the first storage chamber 22a and the liquid medicine in the second storage chamber 22b are mixed together.

[0051] As Figure 2 shown, the port 3 has: a sealing plug 30 that can be pierced by a hollow needle; a hollow port body 31 in which the sealing plug 30 is disposed inside; and an anti-disengagement member 32 mounted on the port body 31.

[0052] The sealing plug 30 has a first surface on the side of the anti-disengagement member 32 and a second surface on the opposite side of the first surface.

[0053] As Figure 3 shown, the sealing plug 30 has an annular groove portion 300 formed on the surface facing the anti-disengagement member 32 (in the present embodiment, on the first surface).

[0054] The height of the central portion (the portion located inside compared to the groove portion 300 on the first surface) of the first surface of the sealing plug 30 is set to be higher than the height of the outer peripheral edge portion (the portion located outside compared to the groove portion 300 on the first surface) of the first surface of the sealing plug 30. That is, the central portion of the first surface of the sealing plug 30 is located on the side of the anti-disengagement member 32 compared to the outer peripheral edge portion of the first surface of the sealing plug 30 in the center line direction of the port body 31.

[0055] As a result, operations (such as alcohol disinfection, etc.) on the central portion of the first surface of the sealing plug 30 become easy.

[0056] The seal plug 30 has an annular recess 301 that opens to the side opposite to the anti - detachment member 32 side. The annular recess 301 is formed on the second surface.

[0057] The seal plug 30 has: an extension portion 302 that extends from the central portion of the second surface to the side opposite to the anti - detachment member 32 side; and an annular protruding portion 303 that surrounds the outer peripheral surface of the extension portion 302.

[0058] The outer peripheral surface of the extension portion 302 bulges toward the annular protruding portion 303 side over the entire circumference in the circumferential direction.

[0059] As Figure 4 shown, the port body 31 has: a tubular sealed portion 310 that has a first end and a second end located on the side opposite to the first end in the center line direction and encloses the seal plug 30; a tubular connecting portion 311 that is connected to the first end of the sealed portion 310 and whose outer periphery is welded to the bag body 2; and a fitting portion 312 formed on one of the inner peripheral surface of the sealed portion 310, the outer peripheral surface of the sealed portion 310, or the second end of the sealed portion 310.

[0060] The sealed portion 310 of the present embodiment has: an outer wall portion 310a formed in a tubular shape; and a continuous portion 310b that connects the outer wall portion 310a and the connecting portion 311.

[0061] The outer wall portion 310a has a first end and a second end located on the side opposite to the first end in the center line direction. The first end of the outer wall portion 310a is connected to the connecting portion 311 via the continuous portion 310b.

[0062] The outer wall portion 310a has an inner peripheral surface that contacts the outer peripheral surface of the seal plug 30 over the entire circumference in the circumferential direction. A recess (groove) serving as the fitting portion 312 is continuously formed in the circumferential direction on the inner peripheral surface on the second - end side of the outer wall portion 310a. In addition, a peeling seal P (see Figure 2 ) is adhesively attached to the second end of the sealed portion 310 (outer wall portion 310a) of the present embodiment so as to be peelable.

[0063] The thickness of the second end of the outer wall portion 310a is set to be thicker than the thickness of the first end of the outer wall portion 310a. Thus, the rigidity of the second end of the outer wall portion 310a is higher than the rigidity of the first - end side of the outer wall portion 310a.

[0064] The continuous portion 310b extends radially inward from the entire circumference in the circumferential direction of the first end of the outer wall portion 310a. The inner peripheral edge of the continuous portion 310b is connected to the connecting portion 311.

[0065] The sealed part 310 further has an annular support part 310c extending from the continuous part 310b to the second end side of the outer wall part 310a. In the sealed part 310, the outer peripheral surface of the support part 310c and the inner peripheral surface of the outer wall part 310a face each other with a gap therebetween. That is, in the sealed part 310, a gap is formed between the outer peripheral surface of the support part 310c and the inner peripheral surface of the outer wall part 310a.

[0066] As Figure 2 shown, in the port 3 of the present embodiment, the extending part 302 of the sealing plug 30 is enclosed or disposed inside the support part 310c. Accordingly, the support part 310c is enclosed or disposed in the annular recess 301 of the sealing plug 30.

[0067] As described above, the outer peripheral surface of the extending part 302 bulges toward the circumferentially entire circumferential protruding part 303. Thereby, the sealing performance between the extending part 302 of the sealing plug 30 and the support part 310c is improved.

[0068] As Figure 4 shown, the connecting part 311 extends from the first end of the sealed part 310. Specifically, the connecting part 311 has, in the center line direction: a first open end, and a second open end located on the opposite side of the first open end. In the present embodiment, the first open end of the connecting part 311 is continuous with the sealed part 310. A pair of sheet members 20 are respectively welded to the outer peripheral surface on the second end side of the connecting part 311 (see Figure 1 ).

[0069] The part to be fitted 312 is a recess formed in the inner peripheral surface of the sealed part 310. The part to be fitted (recess) 312 of the present embodiment is continuous in the entire circumferential direction of the inner peripheral surface of the sealed part 310. That is, the part to be fitted (recess) 312 is formed in an endless ring shape. Further, in the present embodiment, the part to be fitted (recess) 312 is formed in the inner peripheral surface on the second end side of the outer wall part 310a.

[0070] As Figure 5 shown, the anti - detachment member 32 is formed in a circular ring shape. As Figure 2 shown, the anti - detachment member 32 coincides with the first surface of the sealing plug 30 facing outward in the sealed part 310. The anti - detachment member 32 has: an annular main body part 320 having a first surface facing the first end side of the sealed part 310 (in the present embodiment, the sealing plug 30 side); an annular restricting part 321 formed on the first surface of the main body part 320 for restricting the movement of the sealing plug 30 toward the second end side of the sealed part 310; and a fitting part 322 fitted into the part to be fitted 312 of the port main body 31.

[0071] The first surface of the main body portion 320 includes an opposing area that opposes the outward-facing surface (the first surface of the sealing plug 30) of the sealing plug 30 disposed within the portion 310 to be sealed. The anti-disengagement member 32 is formed in an annular shape, and accordingly, the opposing area is an annular area defined by the outer periphery of the main body portion 320. The main body portion 320 has a second surface on the opposite side of the first surface. The second surface of the main body portion 320 constitutes the outer surface facing outward within the portion 310 to be sealed, and is in the same plane or substantially in the same plane as the first surface of the sealing plug 30 (in this embodiment, the central portion of the first surface of the sealing plug 30). More specifically, the second surface (outer surface) of the main body portion 320 is formed in a planar shape. The second surface (outer surface) of the main body portion 320 is located at a position corresponding to or substantially corresponding to the first surface of the sealing plug 30 (in this embodiment, the central portion of the first surface of the sealing plug 30) in the center line direction of the port main body 31.

[0072] The restricting portion 321 protrudes from the first surface of the main body portion 320. In this embodiment, the restricting portion 321 protrudes from the first surface of the main body portion 320 toward the sealing plug 30. The restricting portion 321 protrudes from the area of the first surface of the main body portion 320 that avoids the opposing area opposing the sealing plug 30 toward the sealing plug 30. In this embodiment, the restricting portion 321 protrudes from the annular area on the inner peripheral side of the opposing area of the first surface of the main body portion 320 toward the sealing plug 30. The restricting portion 321 is disposed within the groove portion 300 of the sealing plug 30. In the anti-disengagement member 32 of this embodiment, the restricting portion 321 abuts against the sealing plug 30.

[0073] In addition, in the anti-disengagement member 32 of this embodiment, as described above, the restricting portion 321 protruding from the first surface of the main body portion 320 is disposed within the groove portion 300 of the sealing plug 30. Accordingly, in addition to the restricting portion 321, the anti-disengagement member 32 also causes the opposing area of the first surface of the main body portion 320 to abut against the sealing plug 30.

[0074] The restricting portion 321 is formed on the inner peripheral edge portion side of the main body portion 320. Therefore, in the anti-disengagement member 32, the thickness of the inner peripheral edge portion side of the main body portion 320 is thicker than the thickness of the outer peripheral edge portion side of the main body portion 320. Thereby, the rigidity of the inner peripheral edge portion side of the anti-disengagement member 32 is improved.

[0075] As described above, the fitting portion 312 of the port main body 31 is a recess formed on the inner peripheral surface of the portion 310 to be sealed and is continuous in the entire circumferential direction of the inner peripheral surface of the portion 310 to be sealed. Accordingly, the fitting portion 322 extends radially outward from the outer peripheral surface of the main body portion 320 and is continuous in the entire circumferential direction of the outer peripheral surface of the main body portion 320.

[0076] The entire circumferential direction of the fitting portion 322 abuts against the fitting portion 312 of the port main body 31.

[0077] In this embodiment, the entire circumference in the circumferential direction of the fitting portion 322 of the anti - detachment member 32 is in line contact or partial surface contact with the fitted portion 312 of the port body 31. Further specific description is as follows. As Figure 6 shown, the fitted portion 312 of the port body 31 and the fitting portion 322 (outer peripheral surface) are formed in an arc shape. The curvature of the fitted portion 312 of the port body 31 is smaller than the curvature of the outer peripheral surface of the fitting portion 322 of the anti - detachment member 32. Along with this, the entire circumference in the circumferential direction of the fitting portion 322 is in line contact or partial surface contact with the fitted portion 312 of the port body 31.

[0078] Thereby, it is possible to effectively prevent the anti - detachment member 32 from falling off, and it becomes easy for the fitting portion 322 of the anti - detachment member 32 to be embedded in the fitted portion 312 of the port body 31.

[0079] The liquid medicine bag 1 of this embodiment is as described above. Next, the usage method of the liquid medicine bag 1 will be described with reference to the drawings.

[0080] When using the liquid medicine bag 1 (for example, when injecting the liquid medicine in the bag body 2 into a patient), first, squeeze the first storage chamber 22a or the second storage chamber 22b of the bag body 2. As a result, the weak seal portion 23 is peeled off, and the first storage chamber 22a and the second storage chamber 22b communicate with each other. Along with this, the liquid medicine in the first storage chamber 22a and the liquid medicine in the second storage chamber 22b are mixed.

[0081] Then, peel off the peeling seal P from the second end of the sealed portion 310. As Figure 7 shown, in a state where the port body 31 (sealed portion 310) faces downward, the liquid medicine bag 1 is suspended on an intravenous drip stand (not shown) or the like. Then, the hollow needle N is pierced through the seal plug 30. Thereby, the liquid medicine is taken out from the bag body 2 via the hollow needle N.

[0082] As described above, according to the port 3 of the liquid medicine bag 1 of this embodiment, the anti - detachment member 32 is fixed to the port body 31 by the fitting of the fitted portion 312 of the port body 31 and the fitting portion 322 of the anti - detachment member 32.

[0083] In this state, since the restricting portion 321 of the anti - detachment member 32 abuts against the seal plug 30 over the entire circumference in the circumferential direction, the anti - detachment member 32 uniformly presses the seal plug 30 over the entire circumference in the circumferential direction of the restricting portion 321. Therefore, it is possible to more reliably prevent the seal plug 30 from falling off from the port body 31.

[0084] In addition, in this embodiment, since the fitting portion 322 of the anti - detachment member 32 is fitted into the fitted portion 312 of the port body 31, compared with the ports that require pre - heating and bending processing in the past, assembly can be carried out efficiently.

[0085] Since the entire circumference in the circumferential direction of the fitting portion 322 of the anti - detachment member 32 is in line contact or partial surface contact with the fitted portion 312 of the port body 31, gaps are formed above and below the contact portion between the fitting portion 322 of the anti - detachment member 32 and the fitted portion 312 of the port body 31.

[0086] Thus, the contact position of the anti - detachment member 32 with respect to the fitted portion 312 of the fitting portion 322 can be changed, and the anti - detachment member 32 can be fixed to the port body 31 in a state corresponding to the inclination or misalignment of the sealing plug 30. Along with this, the anti - detachment member 32 can press the sealing plug 30 more appropriately.

[0087] In addition, in the existing port, after the sealing plug is sealed inside the port body, an anti - detachment portion is formed by bending the port body. Therefore, in the existing port, if the sealing plug is sealed inside the port body in an inclined posture, the shape of the port body is unstable and the sealing plug may fall off.

[0088] However, for the port 3 of the present embodiment, since the port body 31 and the anti - detachment member 32 are different components, the anti - detachment member 32 can be installed on the port body 31 while the sealing plug 30 is sealed inside the port body 31. Therefore, in the port 3 of the present embodiment, the deviation of the shape at different positions in the circumferential direction of the port body 31 can be appropriately suppressed, and the detachment of the sealing plug 30 can be more effectively prevented.

[0089] Moreover, the rigidity of the second end of the outer wall portion 310a of the sealed portion 310 is higher than that of the first - end side of the outer wall portion 310a of the sealed portion 310. That is, in the port 3, the rigidity of the portion of the port body 31 where the anti - detachment member 32 is fitted is increased. Thereby, the anti - detachment member 32 can be more reliably prevented from detaching from the port body 31.

[0090] Moreover, in the port 3, since the restricting portion 321 of the anti - detachment member 32 is disposed in the groove portion 300 of the sealing plug 30, when an external force acting in the direction of pulling out from the opening on the second - end side of the sealed portion 310 acts on the sealing plug 30, the sealing plug 30 is pressed toward the anti - detachment member 32. Along with this, a reaction force from the anti - detachment member 32 acts on the sealing plug 30. That is, the portion of the sealing plug 30 that defines the groove portion 300 is supported by the restricting portion 321 of the anti - detachment member 32. Therefore, through the liquid medicine bag (port 3) of the present embodiment, the sealing plug 30 can be prevented from detaching from the port body 31.

[0091] To further specifically illustrate. In the liquid medicine bag 1 of the present embodiment, as described above, in order to peel the weak seal portion 23, the first accommodation chamber 22a of the bag body 2 is squeezed. In this case, the hydraulic pressure of the liquid medicine in the accommodation chamber 22 (the first accommodation chamber 22a) is applied to the sealing plug 30.

[0092] However, in the port 3, the sealing plug 30 is pressed in by the anti - detachment member 32 fixed to the port body 31, so that the sealing plug 30 can be prevented from falling off from the port body 31.

[0093] In addition, in the liquid medicine bag 1 of the present embodiment, when the sealed portion 310 faces downward, the hydraulic pressure of the liquid medicine in the accommodation chamber 22 also acts on the sealing plug 30. However, in the port 3, since the sealing plug 30 is pressed in by the anti - detachment member 32 fixed to the port body 31, the sealing plug 30 can be prevented from falling off from the port body 31.

[0094] Moreover, in the liquid medicine bag 1 of the present embodiment, as described above, the hollow needle N is inserted into the sealing plug 30. At this time, an external force acting toward the inner side of the bag body 2 is applied to the sealing plug 30.

[0095] As a result, since the annular protrusion 303 of the sealing plug 30 is pulled toward the central portion side of the port body 31, the support portion 310c of the sealed portion 310 is pushed by the annular protrusion 303. Moreover, the annular protrusion 303 of the sealing plug 30 receives a reaction force from the support portion 310c of the sealed portion 310.

[0096] Therefore, since the annular protrusion 303 of the sealing plug 30 is supported by the support portion 310c of the sealed portion 310, the sealing plug 30 located inside the port body 31 can be prevented from falling off (entering) into the bag body 2.

[0097] In the liquid medicine bag 1 of the present embodiment, as Figure 8 shown, the hollow needle N pierced through the sealing plug 30 is pulled out. In this case, an external force acting in the opposite direction to the bag body 2 is applied to the sealing plug 30.

[0098] As a result, since the outer peripheral edge portion (the outer peripheral edge portion on the first surface side) of the sealing plug 30 is pulled toward the central portion side of the port body 31, the restricting portion 321 of the anti - detachment member 32 is pushed by the outer peripheral edge portion of the sealing plug 30. Moreover, the outer peripheral edge portion of the sealing plug 30 receives a reaction force from the restricting portion 321 of the anti - detachment member 32.

[0099] Therefore, the outer peripheral edge portion of the sealing plug 30 is supported by the restricting portion 321 of the anti - detachment member 32, and the sealing plug 30 can be prevented from falling off from the port body 31.

[0100] As described above, since the rigidity of the second end of the outer wall portion 310a is higher than that of the first end side of the outer wall portion 310a, it is possible to easily and appropriately attach the peeling seal P to the port body 31 (the second end of the sealed portion 310).

[0101] In addition, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.

[0102] In the above-described embodiment, the port body 31 has one sealed portion 310, but is not limited thereto. For example, the port body 31 may also have two or more sealed portions 310. In this case, the sealing plugs 30 are sealed in each sealed portion 320, and of course, the anti-disengagement members 32 are installed.

[0103] In the above-described embodiment, the bag body 2 is formed by fusing the outer peripheral edge portions of a pair of overlapping sheet members 20 to each other, but is not limited thereto. For example, the bag body 2 may also be formed by closing (e.g., fusing) the both end opening portions of a sheet (or film) formed in a tubular shape.

[0104] In the above-described embodiment, the bag body 2 and the port 3 are connected by fusion, but are not limited thereto. For example, the bag body 2 and the port 3 may also be connected by an adhesive or the like.

[0105] In the above-described embodiment, two spaces (the first accommodation chamber 22a and the second accommodation chamber 22b) are formed inside the bag body 2, but are not limited thereto. For example, only one space may be formed inside the bag body 2, or three or more spaces may be formed.

[0106] In the above-described embodiment, one port 3 is installed on the bag body 2 in the liquid medicine bag 1, but is not limited thereto. For example, in the liquid medicine bag 1, two or more ports 3 may also be installed on the bag body 2.

[0107] In the above-described embodiment, the central portion of the first surface of the sealing plug 30 and the second surface of the main body portion 320 are in the same plane or substantially in the same plane, but are not limited thereto. For example, the central portion of the first surface of the sealing plug 30 may further protrude from the second surface of the main body portion 320. Even so, it is possible to easily perform operations (e.g., alcohol disinfection, etc.) on the central portion of the first surface of the sealing plug 30.

[0108] In the above-described embodiment, the groove portion 300 of the sealing plug 30 is formed in a ring shape, but is not limited thereto. The groove portion 300 may also be formed corresponding to the shape of the restricting portion 321 protruding from the first surface of the main body portion 320.

[0109] In the above-described embodiment, in the port body 31, the connecting portion 311 and the portion to be sealed 310 are integrally formed, but it is not limited thereto. For example, in the port body 31, the connecting portion 311 and the portion to be sealed 310 may also be separately formed.

[0110] In the above-described embodiment, the fitting portion 312 is formed on the inner peripheral surface of the second end side of the portion to be sealed 310, but it is not limited thereto. For example, as Figure 9 shown, the fitting portion 312 may also be formed on the outer peripheral surface of the portion to be sealed 310.

[0111] In this case, the anti-disengagement member 32 is formed so as to cover the second end side of the portion to be sealed 310, and the fitting portion 322 may be disposed at a position (a position where they can be fitted) corresponding to the fitting portion 312 formed on the outer peripheral surface of the portion to be sealed 310.

[0112] In addition, as Figure 10 shown, the fitting portion 312 may also be formed at the second end of the portion to be sealed 310. In this case, the main body portion 320 is formed so as to straddle the second end of the portion to be sealed 310 (locally covering the second end), and the fitting portion 322 may be disposed at a position (a position where they can be fitted) corresponding to the fitting portion 312 formed at the second end of the portion to be sealed 310.

[0113] In the above-described embodiment, the fitting portion 312 is constituted by a recess (groove) that is continuous in the circumferential direction over the entire circumference of the inner peripheral surface of the portion to be sealed 310 (the outer wall portion 310a), but it is not limited thereto. For example, the fitting portion 312 may also be constituted by a plurality of recesses formed intermittently in the circumferential direction on the inner peripheral surface of the portion to be sealed 310 (the outer wall portion 310a). In this case, the fitting portion 322 of the anti-disengagement member 32 may be constituted by a plurality of protrusions formed at positions corresponding to the respective recesses of the fitting portion 312.

[0114] In the above-described embodiment, the restricting portion 321 of the anti-disengagement member 32 protrudes from the first surface of the main body portion 320 toward the sealing plug 30, but it is not limited thereto. The restricting portion 321 may be on the first surface of the main body portion 320. For example, if it can abut against the sealing plug 30, it may also be constituted by at least a part of the first surface of the main body portion 320. In this case, the restricting portion 321 is constituted by a region that is juxtaposed with the opposing region that opposes the sealing plug 30 in the first surface, or is just constituted by the opposing region. In addition, the restricting portion 321 is not limited to a structure that is continuous in the circumferential direction (a structure formed in a ring shape). For example, the restricting portion 321 may also be provided at a plurality of positions on the first surface of the main body portion 320.

[0115] In the above-described embodiment, the restricting portion 321 of the anti-disengagement member 32 abuts against the sealing plug 30, but is not limited thereto. For example, the restricting portion 321 may also be configured to have a gap formed therebetween and the sealing plug 30. However, in this case, when the sealing plug 30 moves toward the second end side of the sealed portion 310 within the sealed portion 310, the restricting portion 321 will of course interfere (abut) with the sealing plug 30, and the anti-disengagement member 32 (restricting portion 321) will of course maintain the sealing plug 30 within the sealed portion 310.

[0116] In the above-described embodiment, although not specifically mentioned, the anti-disengagement member 32 and the sealing plug 30 may also be separated from each other or connected to each other (e.g., bonded) to be integrated. In the case where the anti-disengagement member 32 and the sealing plug 30 are separated from each other, the anti-disengagement member 32 is installed after the sealing plug 30 is enclosed in the sealed portion 310. In the case where the anti-disengagement member 32 and the sealing plug 30 are connected to each other (e.g., bonded), the anti-disengagement member 32 is installed while the sealing plug 30 is enclosed in the sealed portion 310.

[0117] In the above-described embodiment, the main body portion 320 of the anti-disengagement member 32 coincides with the first surface of the sealing plug 30, and accordingly, the restricting portion 321 also coincides with the first surface side of the sealing plug 30, but is not limited thereto. It may also be that the restricting portion 321 is buried between the first surface and the second surface of the sealing plug 30, and the anti-disengagement member 32 and the sealing plug 30 are integrally formed. If so, the restricting portion 321 of the anti-disengagement member 32 and the sealing plug 30 are in a state of interference (abutment), and the restricting portion 321 restricts the movement of the sealing plug 30 toward the second end side of the sealed portion 310. In addition, in this case, the fitting portion 322 of the anti-disengagement member 32 can be formed in a flange shape extending outward from the outer periphery of the sealing plug 30.

[0118] In the above-described embodiment, the entire region on the second surface side of the main body portion 320 is formed in a planar shape, but is not limited thereto. For example, as Figure 11 shown, the anti-disengagement member 32 may also have a protruding portion 323 protruding from the second surface of the main body portion 320.

[0119] In this case, the protruding portion 323 is preferably formed in a configuration and shape symmetrical to the restricting portion 321 with reference to an imaginary line (imaginary plane) that is orthogonal to the hole center of the main body portion 320 and passes through the main body portion 320.

[0120] If so, the anti-disengagement member 32 has no front or back. When the anti-disengagement member 32 is disposed within the sealed portion 310 with the protruding portion 323 facing the sealing plug 30 side, the protruding portion 323 functions as the restricting portion 321. Therefore, when assembling the port 3, it is not necessary to confirm the front and back of the anti-disengagement member 32, and thus, the production efficiency is improved.

[0121] In the above-described embodiment, the fitting portion 312 is constituted by a concave portion formed on the inner circumferential surface of the outer wall portion 310a, but it is not limited thereto. For example, as Figure 12 shown, the fitting portion 312 may also be a convex portion formed on the inner circumferential surface of the portion to be sealed 310 (outer wall portion 310a). In addition, the fitting portion 312 constituted by the convex portion may be continuous in the entire circumferential direction of the inner circumferential surface of the outer wall portion 310a. In this case, the engaging portion 322 only needs to be a concave portion into which the convex portion constituting the fitting portion 312 can be inserted.

[0122] In the above-described embodiment, although not particularly mentioned, when the fitting portion 312 is constituted by either a concave portion or a convex portion formed on the inner circumferential surface of the portion to be sealed 310 (outer wall portion 310a), and the engaging portion 322 is constituted by the other of the concave portion or the convex portion, it is preferable that the protruding amount of the convex portion constituting either the fitting portion 312 or the engaging portion 322 is larger than the recessed amount of the concave portion. If so, since the convex portion presses against the other, the pressing force between the fitting portion 312 and the engaging portion 322 can be increased. As a result, the anti-disengagement member 32 is more difficult to disengage from the portion to be sealed 310.

[0123] In addition, in order to make the fitting amount (coincidence amount) of the convex portion constituting either the fitting portion 312 or the engaging portion 322 and the concave portion constituting the other of the fitting portion 312 or the engaging portion 322 as large as possible, the protruding amount of the convex portion and the depth of the concave portion can also be set. If so, the engaging portion 322 and the fitting portion 312 can be reliably fitted, and the anti-disengagement member 32 is more difficult to disengage from the portion to be sealed 310.

[0124] Moreover, in order to prevent pranks by third parties, a structure for preventing the anti-disengagement member 32 from being forcibly removed from the portion to be sealed 310 may be added to the port 3.

[0125] For example, as Figure 13 shown, the port 3 may also have a connecting portion 324, which is a structure that integrates at least a part of the portion to be sealed 310 of the port body 31 and at least a part of the anti-disengagement member 32 disposed within the portion to be sealed 310.

[0126] In this case, at least the portion to be sealed 310 of the anti-disengagement member 32 and the port body 31 are made of resins having compatibility with each other and capable of being mixed with each other in a molten state. The anti-disengagement member 32 has a connected portion 325, and the connected portion 325 has a surface that is at the same level as a certain surface ( Figure 13 in this case, the end surface of the portion to be sealed 310) of the inner circumferential surface, outer circumferential surface, or end surface of the portion to be sealed 310 when the anti-disengagement member 32 is disposed within the portion to be sealed 310. The connecting portion 324 is formed by making one of the inner circumferential surface, outer circumferential surface, or end surface of the portion to be sealed 310 ( Figure 13It is formed by at least a part of the end face of the portion to be sealed 310 (in the figure, it is the end face of the portion to be sealed 310) and at least a part of the face of the connected portion 325 that is at the same level as this part being melted and solidified.

[0127] If so, since the portion to be sealed 310 and the anti - detachment member 32 embedded in the portion to be sealed 310 become integrated, it is possible to prevent the anti - detachment member 32 from being removed.

[0128] In addition, as Figure 14 shown, the anti - detachment member 32 may further have a predetermined fracture portion 326 for fracturing the main body portion 320 at the boundary between the opposed region and the region where the restricting portion 321 is formed in the first face of the main body portion 320.

[0129] In this case, the predetermined fracture portion 326 is formed to be weaker than other regions in the main body portion 320 of the anti - detachment member 32. For example, the predetermined fracture portion 326 is formed to have a thinner wall than other regions in the main body portion 320 of the anti - detachment member 32.

[0130] If so, even if a malicious third party attempts to remove the anti - detachment member 32, for example, by pulling the protruding portion 323 outward using a tool (such as pliers), or by pressing a tool or the like into the inner peripheral side of the main body portion 320 of the anti - detachment member 32 and thereby applying a force to the inner peripheral side of the main body portion 320 of the anti - detachment member 32, the anti - detachment member 32 will fracture at the fragile predetermined fracture portion 326.

[0131] In this way, since the anti - detachment member 32 fractures locally, there will be traces of the third party's prank remaining, so it is possible to exclude the liquid medicine bag 1 suspected of being pranked in advance.

[0132] In addition, as Figure 15 shown, the anti - detachment member 32 may further have an extension portion 327 arranged along the portion to be sealed 310 (outer wall portion 310a). The extension portion 327 has a base end connected to the outer peripheral end portion of the main body portion 320 of the anti - detachment member 32 in the center line direction of the portion to be sealed 310 and a front end located on the opposite side of the base end, and a fitting portion 322 is connected to the front end of the extension portion 327.

[0133] If so, the extension portion 327 and the fitting portion 322 connected to the front end of the extension portion 327 are in a state of being clamped by the sealing plug 30 and the portion to be sealed 310 (outer wall portion 310a). Thereby, the movement of the fitting portion 322 in the direction of detachment (the direction orthogonal to the center line of the portion to be sealed 310) from the fitted portion 312 is restricted.

[0134] Therefore, even if a malicious third party attempts to remove the anti - detachment member 32, it is possible to prevent the fitting portion 322 from being removed from the fitted portion 312.

[0135] That is, when a malicious third party attempts to remove the anti - detachment component 32, for example, by using a tool to pull the inner peripheral side of the main body portion 320 of the anti - detachment component 32 outward, or by pressing a tool or the like into the inner peripheral side of the main body portion 320 of the anti - detachment component 32 and thereby applying a force to the inner peripheral side of the main body portion 320 of the anti - detachment component 32, the vicinity of the outer peripheral end of the main body portion 320 of the anti - detachment component 32 will become the point of action, and the fitting portion 322 connected to the front end of the extension portion 327 will move in the direction of detaching from the fitted portion 312 (the direction orthogonal to the center line of the sealed portion 310).

[0136] However, as described above, since the movement of the fitting portion 322 in the direction of detaching from the fitted portion 312 (the direction orthogonal to the center line of the sealed portion 310) is restricted, it is possible to prevent the fitting portion 322 from detaching from the fitted portion 312.

[0137] In addition, the fitting portion 322 connected to the front end of the extension portion 327 is disposed between the first end and the second end of the sealed portion 310 (outer wall portion 310a), that is, at a position on the first - end side of the sealed portion 310 compared to the main body portion 320 of the anti - detachment component 32. That is, the fitting portion 322 is disposed at a deep position within the sealed portion 310. Thereby, it is difficult to directly access the fitting portion 322, and it is possible to reliably prevent a prank by a third party from removing the anti - detachment component 32 from the sealed portion 310.

[0138] In the above - described embodiment, the main body portion 320 of the anti - detachment component 32 is formed in an annular shape in which the center of the outer peripheral shape coincides with the center of the inner peripheral shape, but it is not limited thereto. For example, it may also be formed in an annular shape in which the center of the outer peripheral shape does not coincide with the center of the inner peripheral shape, or in an annular shape in which the outer peripheral shape and the inner peripheral shape are different shapes. In addition, the main body portion 320 of the anti - detachment component 32 is not limited to an annular structure that defines a through - hole. For example, the main body portion 320 of the anti - detachment component 32 may have a cut - out portion instead of the through - hole. That is, the main body portion 320 of the anti - detachment component 32 may also have a needle insertion portion that enables the sealing plug 30 to be exposed to the outside and allows the hollow needle N to approach the sealing plug 30.

[0139] In the above - described embodiment, the curvature of the fitted portion 312 of the port body 31 is set to be smaller than the curvature of the outer peripheral surface of the fitting portion 322, but it is not limited thereto. For example, as Figure 16 shown, the curvature of the fitted portion 312 of the port body 31 may also be set to be the same as or substantially the same as the curvature of the outer peripheral surface of the fitting portion 322.

[0140] In the above-described embodiment, the entire circumference in the circumferential direction of the fitting portion 322 of the anti-disengagement member 32 is in line contact or partial surface contact with the fitted portion 312 of the port body 31, but it is not limited thereto. For example, multiple positions in the circumferential direction of the fitting portion 322 of the anti-disengagement member 32 may be in partial contact with the fitted portion 312 of the port body 31. That is, the fitted portion 312 of the port body 31 and the fitting portion 322 of the anti-disengagement member 32 may also be formed such that they are in contact with each other at multiple positions (portions) spaced apart in the circumferential direction in the fitted state.

[0141] In addition, the fitted portion 312 and the fitting portion 322 are not limited to concave or convex portions. It is sufficient that the fitted portion 312 and the fitting portion 322 are formed such that they can transmit the force in the center line direction of the sealed portion 310 in the fitted state. That is, on the condition that the fitted portion 312 and the fitting portion 322 can be fitted to each other, the fitted portion 312 has an engaging surface (plane or curved surface) facing the first end side of the sealed portion 310, and the fitting portion 322 has an engaging surface (plane or curved surface) facing the second end side of the sealed portion 310 and opposed to the engaging surface (plane or curved surface) in the fitted portion 312.

[0142] Furthermore, each of the above-described components can be formed of various known materials such as polyethylene or polypropylene. In addition, each of the above-described components can be formed by a known method such as an injection molding method.

[0143] Description of Reference Numerals

[0144] 1... liquid medicine bag 2... bag body

[0145] 3... port 20... sheet member

[0146] 21... sealing portion 22... accommodating chamber

[0147] 22a... first accommodating chamber (space) 22b... second accommodating chamber (space)

[0148] 23... weak sealing portion 30... sealing plug

[0149] 31... port body 32... anti-disengagement member

[0150] 300... groove portion 301... annular recess

[0151] 302... extension portion 303... annular protrusion

[0152] 310... sealed portion 310a... outer wall portion

[0153] 310b... continuous portion 310c... support portion

[0154] 311... connecting portion 312... fitted portion

[0155] 320…Main body part 321…Restricting part

[0156] 322…Fitting part 323…Protruding part

[0157] 324…Connecting part 325…Part to be connected

[0158] 326…Predetermined fracture part 327…Extension part

[0159] N…Hollow needle P…Peeling seal

Claims

1. A port having: A sealing plug that can be pierced by a hollow needle; A hollow port body in which the sealing plug is disposed inside; An anti - detachment member mounted on the port body; And A peeling seal adhered to the port body, The port body has: A cylindrical sealed portion having a first end and a second end on the opposite side of the first end in the center - line direction, and enclosing the sealing plug; A cylindrical connecting portion connected to the first end of the sealed portion, and the outer periphery thereof is connected to a bag body filled with a liquid medicine; A fitting portion formed on the inner peripheral surface of the sealed portion, And the sealed portion, the connecting portion and the fitting portion are integrally formed, The anti - detachment member has: A main body portion having a first surface that faces the first - end side of the sealed portion inside the sealed portion; A restricting portion formed on the first surface of the main body portion to restrict the movement of the sealing plug toward the second - end side of the sealed portion; A fitting portion fitted onto the fitting portion of the port body, The sealed portion has an outer wall portion formed in a cylindrical shape, In the center - line direction, the thickness of the second end of the outer wall portion is set to be thicker than the thickness of the first end of the outer wall portion, At the second end of the outer wall portion with a thick thickness, while the peeling seal is adhered in a peelable manner, the fitting portion is provided on the inner peripheral surface.

Images