Packaging container for medical devices and packaged medical devices

Abstract

This packaging container 1 for a medical instrument comprises a tray 2, a sheet-like lid part 3 having an annular flange section 23, and an annular heat seal part 4. The annular heat seal part has a first side seal section 5, a second side seal section, a third side seal section 7, and a fourth side seal section 8. The first side seal section 5 comprises a central seal portion 51, a first side seal portion 52, and a second side seal portion 53. The central seal portion comprises two central seal extension sections 54, 55, the first side seal portion comprises a first side seal extension section 56, and the second side seal portion comprises a second side seal extension section 57.

Description

Technical Field

[0001] The present invention relates to a packaging container for medical devices and a medical device packaged by the packaging container. Specifically, it relates to a blister-type packaging container for medical devices that is easy to open and the packaged medical device.

Background Art

[0002] Conventionally, packaging containers for storing many medical devices have been used, and many medical devices are provided in a packaged state. As the packaging container, there are bag-shaped ones and those of a type called a so-called blister.

[0003] In blister packaging, it consists of a tray (container body) and a sheet-like lid portion (sealing film) that is detachably adhered to the top surface opening of the tray. The tray has an annular flange formed on the peripheral edge of the opening, and the sheet-like lid portion is detachably fixed to this annular flange by an annular heat seal portion.

[0004] In such a blister packaging container, the tray is often formed in a rectangular shape according to the form of the medical device that is the stored item. For this reason, the flange of the tray also often has an outer edge formed in an annular shape with a rectangular shape. And the rectangular annular flange has four corner portions, and the corner portions are generally formed in a curved shape. And when the flange of the tray is a rectangular ring, the shape of the heat seal portion formed on the flange is also formed in a rectangular ring shape.

[0005] As such a heat seal shape in blister packaging, the applicant of the present application has proposed Patent 2786882 (Patent Document 1), JP-A-2001-104475 (Patent Document 2), and JP-A-59-199463 (Patent Document 3). Also, as a heat seal shape, there is JP-A-2007-297080 (Patent Document 4).

Prior Art Documents

Patent Documents

[0006] [Patent Document 1] Patent 2786882 (EP0398316A1) [Patent Document 2] Japanese Unexamined Patent Application Publication No. 2001-104475 [Patent Document 3] Japanese Unexamined Patent Application Publication No. 59-199463 [Patent Document 4] Japanese Unexamined Patent Application Publication No. 2007-297080 [Summary of the Invention] [Problems to be Solved by the Invention]

[0007] In the packaging container of Patent Document 1 (Patent 2786882), the packaging container 11 includes a tray portion 15 formed in a square 12 bowl shape having curved portions at four corners with a synthetic resin sheet and having a flange portion 14 with an outer edge 13 parallel to the shape at the opening periphery, and a synthetic resin sheet-like lid body 16.

[0008] The tray portion 15 and the lid body 16 are heat-sealed and sealed in a strip shape 17 with a certain width via an adhesive layer formed on the inner surface of the lid body. And the lid body 16 is formed so as to protrude outward from the outer edge 13 of the flange portion 14 of the tray portion 15 at all four corners thereof.

[0009] In FIG. 3 of Patent Document 1, the four corner portions of the square lid body 16 are curved with a radius of curvature smaller than the radius of curvature of the virtual outer edge line 13 of the flange portion 14 parallel to the opening periphery of the corresponding tray portion 15, preferably about 1 / 2 of the radius of curvature of the outer edge virtual line 13, whereby a protruding portion is formed. Also, considering the ease of peeling of the heat-sealed portion by a person, there is also a disclosure that it is more advantageous if the tip of the protruding portion is more pointed as the shape at the start of peeling.

[0010] In Patent Document 2 (Japanese Patent Laid-Open No. 2001-104475), FIG. 12 thereof shows a packaged prefilled syringe 1. The packaged prefilled syringe 1 is provided with a non-sealed portion 51 for gripping when peeling off the sealing film 22 during use, on the rear end side of the plunger 14 of the syringe 5. And the sealed portion includes a first sealed portion 52, a second sealed portion 53, and a third sealed portion 54 from the non-sealed portion 51 side. Although the first sealed portion 52 is narrower than the other sealed portions, it is fully sealed, so it has sufficient sealing strength and the resistance during peeling is not too large. Further, until use, the corner portion of the first sealed portion 52 is recessed inward so that partial peeling is less likely to occur even if an external force is applied from the corner of the non-sealed portion 51.

[0011] Patent Document 3 (Japanese Patent Laid-Open No. 59-199463) has the following disclosure. As shown in FIGS. 5 to 6 of Patent Document 3, at least one corner portion is used as a peeling start portion 14, and an adhesive portion 11 is formed to protrude outward with respect to the peeling force action line X-X” of the lid 15 at the corner portion. In the case of FIG. 6, since a plurality of (for example, three) protruding tip portions 18 are formed, it has a waveform, and each protruding tip portion 18 (convex portion) is at substantially the same distance (radius R3) from the center point Y, and it is desirable that the outer convex portion position R2 and the inner convex portion position R1 satisfy R1≦R2. FIG. 7 of Patent Document 3 shows another embodiment of the packaging container. Similarly, among the adhesive portions 11 formed to protrude outward with respect to the peeling force action line of the lid 15, the protruding tip portion 18 at the center portion protrudes most outward at the a-line position, then the protruding tip portions 18 at both ends protrude outward at the b-line position, then the inner concave portion at the center portion is at the c-line position, the inner concave portions at both ends are at the d-line position, and the inner convex portion is at the e-line position. With such an arrangement, peeling becomes extremely easy.

[0012] Patent Document 4 (Japanese Patent Laid-Open No. 2007-297080) has the following disclosure. (Problem) To provide a packaging container that is easy to open and can ensure sufficient adhesive strength. (Solution) A rectangular opening 4 of a base material 1 with a recess 3 for storing an article formed below is covered with a sheet-like member 2, a flange portion 10 extending horizontally outward from the periphery of the opening 4 is provided, the sheet-like member 2 is adhered to an adhesion region 111 on the upper surface of the flange portion 10 to seal the inside of the base material 1, at least one of the four corners of the opening 4 is an opening corner portion C, and a non-adhesion region 112c with the sheet-like member 2 is provided outside the adhesion region 111c in the opening corner portion C to form a grip portion 5 at the time of opening. In the packaging container 100, the adhesion region 111c in the opening corner portion C is formed to bulge upward.

[0013] In blister packaging, the peeling of the sheet-like lid portion is performed by gripping a part of the sheet-like lid portion and pulling it in a certain direction. The direction in which the sheet-like lid portion is pulled for peeling varies depending on the operator and is not uniform. For example, when the start of peeling is performed by gripping the peeling start portion of the sheet-like lid portion and pulling it substantially parallel to the longitudinal direction of the tray, when the peeling start portion of the sheet-like lid portion is gripped and pulled obliquely in the longitudinal direction of the tray from the first corner portion of the tray close to the peeling start portion, and when the peeling start portion of the sheet-like lid portion is gripped and pulled obliquely in the longitudinal direction of the tray from the second corner portion facing the first corner portion of the tray and close to the peeling start portion are assumed.

[0014] However, in the above-mentioned Patent Documents 1 to 4, the peeling of the sheet-like lid portion in blister packaging is performed from the corner portion, and no corresponding measures are taken for gripping the peeling start portion of the sheet-like lid portion and pulling it substantially parallel to the longitudinal direction of the tray.

[0015] In addition, in order to facilitate peeling, there are some with protrusions provided at the heat-sealing portion. However, so-called protrusions, although they facilitate peeling, may also cause accidental peeling.

[0016] An object of the present invention is to be able to satisfactorily peel a sheet-like lid portion from a tray even if the peeling of the sheet-like lid portion is started from any of the above-described directions, and to provide a packaging container for a medical device that does not have a seal weak portion due to a heat seal shape, and a medical device packaged by the packaging container.

Means for Solving the Problems

[0017] What achieves the above object is as follows. A packaging container for a medical device having a tray having an upper end opening and a medical device storage portion, and a sheet-like lid portion that closes the upper end opening of the tray, The tray includes an annular flange portion provided on the entire circumference of the upper end opening, The For medical devices The packaging container detachably fixes the sheet-like lid portion on the annular flange portion and includes an annular heat seal portion having a rectangular outer edge, The annular heat seal portion has a first side seal portion and a second side seal portion facing each other, and a third side seal portion and a fourth side seal portion that are located between the first side seal portion and the second side seal portion and face each other, The sheet-like lid portion includes a flap portion that protrudes from the first side seal portion of the annular heat seal portion, One end of the third side seal portion and the fourth side seal portion is located on the second side seal portion side by a predetermined length from the first side seal portion, The first side seal portion includes a central seal portion, a first side portion seal portion that obliquely extends to connect one end of the central seal portion and the one end of the third side seal portion, and a second side portion seal portion that obliquely extends to connect the other end of the central seal portion and the one end of the fourth side seal portion, The first side seal portion includes two central seal extension portions that extend from the outer edge of the central seal portion and are spaced apart by a predetermined length, a first side portion seal extension portion that extends from the outer edge of the first side portion seal portion, and a second side portion seal extension portion that extends from the outer edge of the second side portion seal portion, The central seal extension part, the first side seal extension part, and the second side seal extension part are in a form with a rounded outer edge at the tip without corners. Furthermore, the distance between one end and the other end of the central seal part is 45 / 100 to 55 / 100 of the outer edge distance between one end of the third side seal part and one end of the fourth side seal part in the packaging container for medical instruments.

[0018] Also, what achieves the above object is as follows. It consists of the above-mentioned packaging container for medical instruments and a medical instrument stored in the medical instrument storage part of the tray. In a state where the medical instrument is stored in the tray, the upper end opening is detachably sealed by the sheet-like lid part in the packaged medical instrument.

Brief Description of the Drawings

[0019]

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Embodiments for Carrying Out the Invention

[0020] The packaging container for medical instruments of the present invention and the packaged medical instruments will be described using the embodiments shown in the drawings. As shown in FIGS. 1 to 3, the packaging container 1 for medical instruments of the present invention includes a tray 2 having an upper end opening 21 and a medical instrument storage portion 22, and a sheet-like lid portion 3 that closes the upper end opening 21 of the tray 2. The tray 2 includes an annular flange portion 23 provided on the entire circumference of the upper end opening 21.

[0021] The packaging container 1 includes an annular heat seal portion 4 with a rectangular outer edge, which detachably fixes the sheet-like lid portion 3 on the annular flange portion 23. The annular heat seal portion 4 has a first side seal portion 5 and a second side seal portion 6 facing each other, and a third side seal portion 7 and a fourth side seal portion 8 that are located between the first side seal portion 5 and the second side seal portion 6 and face each other.

[0022] The sheet-like lid portion 3 includes a flap portion 31 that protrudes from the first side seal portion 5 of the annular heat seal portion 4. One ends of the third side seal portion 7 and the fourth side seal portion 8 are located on the second side seal portion 6 side at a predetermined length from the first side seal portion 5. The first side seal portion 5 includes a central seal portion 51, a first side seal extension portion 52 that obliquely extends to connect one end 51a of the central seal portion 51 and one end 71 of the third side seal portion 7, and a second side seal extension portion 53 that obliquely extends to connect the other end 51b of the central seal portion 51 and one end 81 of the fourth side seal portion 8.

[0023] The first side seal portion 5 includes two central seal extension portions 54, 55 that extend from the outer edge of the central seal portion 51 and are spaced apart by a predetermined length, a first side seal extension portion 56 that extends from the outer edge of the first side seal extension portion 52, and a second side seal extension portion 57 that extends from the outer edge of the second side seal extension portion 53. The outer edges of the tips of the central seal extension portions 54, 55, the first side seal extension portion 56, and the second side seal extension portion 57 are in a rounded form without corners. Further, the distance between one end 51a and the other end 51b of the central seal portion 51 is 45 / 100 to 55 / 100 of the outer edge distance between one end 71 of the third side seal portion 7 and one end 81 of the fourth side seal portion 8.

[0024] In addition, the packaged medical device of the present invention comprises the above-described packaging container 1 for medical devices and the medical device 10 stored in the medical device storage portion 22 of the tray 2. With the medical device 10 stored therein, the upper end opening 21 of the tray 2 is detachably sealed by a sheet-like lid portion 3.

[0025] The packaging container 1 for medical devices has a tray 2 having an upper end opening 21 and a medical device storage portion 22, and a sheet-like lid portion 3 that closes the upper end opening 21 of the tray 2. In addition, the packaged medical device comprises the above-described packaging container 1 for medical devices and the medical device 10 stored therein.

[0026] As shown in FIGS. 4 and 5, the tray 2 includes an upper end opening 21, a medical device storage portion 22, and an annular flange portion 23 provided on the entire circumference of the upper end opening 21. The upper surface of the annular flange portion 23 is a flat surface and is endless. The medical device storage portion 22 is a recess, and the medical device 10 can be stored in a state where it does not protrude from the upper end opening 21.

[0027] In addition, in the tray 2 of this embodiment, the outer edge shape in top view (the outer edge shape of the annular flange portion 23) is rectangular, specifically rectangular. The annular flange portion 23 has a first side flange portion 24, a second side flange portion 25 facing the first side flange portion 24, and a third side flange portion 26 and a fourth side flange portion 27 that are located between the first side flange portion 24 and the second side flange portion 25 and face each other. The first side flange portion 24 and the second side flange portion 25 are parallel, and the third side flange portion 26 and the fourth side flange portion 27 are parallel. The third side flange portion 26 and the fourth side flange portion 27 are orthogonal to the first side flange portion 24 and the second side flange portion 25. In the tray 2 of this embodiment, the first side flange portion 24 and the second side flange portion 25 are short side portions, and the third side flange portion 26 and the fourth side flange portion 27 are long side portions. Note that the lengths of the four flange portions of the tray 2 may be substantially equal.

[0028] One end of the first side flange portion 24 and one end of the third side flange portion 26 are connected to form the first corner flange portion 28. The other end of the first side flange portion 24 and one end of the fourth side flange portion 27 are connected to form the second corner flange portion 29. One end of the second side flange portion 25 and the other end of the third side flange portion 26 are connected to form the third corner flange portion 61. The other end of the second side flange portion 25 and the other end of the fourth side flange portion 27 are connected to form the fourth corner flange portion 62. The outer edges of the four corner flange portions 28, 29, 61, and 62 are curved portions and have no edges.

[0029] Also, in the tray 2 of this embodiment, the flange portions in the first corner flange portion 28 and the second corner flange portion 29 are triangular with the corner as the vertex and the bottom side facing the corner. The flange portions in the parts other than the first corner flange portion 28 and the second corner flange portion 29 are strip-shaped portions extending with substantially the same width. The outer edge of the annular flange portion 23 of this embodiment is linear except for the corner flange portions. Note that the outer edge of the annular flange portion 23 is not limited to being linear and may be arc-shaped, wavy, or the like.

[0030] In the tray 2 of this embodiment, the medical instrument storage portion 22 is provided with concave portions and convex portions corresponding to the outer shape of the medical instrument 10 to be stored, and the medical instrument 10 can be stored inside in a substantially immovable manner. Note that the shape of the medical instrument storage portion 22 is appropriately changed according to the medical instrument to be stored.

[0031] As the material of the tray 2, a material capable of forming a heat-sealing portion is used. Note that only the above-described annular flange portion 23 may be heat-sealable. As the material of the tray 2, it is preferable to have a certain degree of strength and hardness. For example, polyolefins such as polypropylene and polyethylene, vinyl chloride resin, polyester resin (specifically, polyethylene terephthalate), and thermoplastic resins such as polystyrene / polypropylene resin can be preferably used. Furthermore, those having a certain degree of transparency are more preferable.

[0032] In addition, when the medical device to be stored contains a drug that is easily affected by light, various pigments and ultraviolet absorbers may be contained in the forming material of the tray. Furthermore, it is preferable to provide a layer with a thickness of about 30 to 70 μm made of a resin having gas-barrier properties and water-vapor-barrier properties (for example, polyvinylidene chloride, ethylene-vinyl alcohol copolymer, polyethylene terephthalate) on the above resin. Specifically, those composed of three layers of polyethylene terephthalate / ethylene-vinyl alcohol copolymer / polypropylene (gas-barrier specification) and those made of polypropylene alone are preferable.

[0033] As the sheet-like lid portion 3, one that can be heat-sealed to the annular flange portion of the tray is used. As shown in FIGS. 2 and 10, the sheet-like lid portion 3 of this embodiment is rectangular, the first side and the second side facing it are short sides, and the third side and the fourth side located between the first side and the second side and facing each other are long sides. As shown in FIGS. 2, 6, and 7, the sheet-like lid portion 3 is provided with a flap portion 31 that protrudes a predetermined length from the first-side seal portion 5 of the annular heat-sealing portion 4 described later. This flap portion 31 is used as a gripping portion during the peeling operation. Note that the flap portion 31 also protrudes a predetermined length from the first-side flange portion 24 of the tray 2.

[0034] The distance T1 between one end of the portion of the flap portion 31 extending from the first-side seal portion 5 and the center seal portion 51 of the first-side seal portion 5, and the distance T2 (T1, T2) between one end of the portion of the flap portion 31 extending from the first-side seal portion 5 and the first-side flange portion 24 are preferably 35 to 50 mm, and particularly preferably 40 to 46 mm. Furthermore, the distances T1 and T2 are preferably 50 / 100 to 100 / 100 of the outer edge distance L between one end 71 of the third-side seal portion 7 and one end 81 of the fourth-side seal portion 8. In particular, the distances T1 and T2 are preferably 50 / 100 to 70 / 100 of the distance L. In particular, it is preferably 55 / 100 to 65 / 100. T1 is preferably about 3 to 10 mm longer than T2. In particular, it is preferably about 4 to 8 mm longer. Also, the outer edge distance L between one end 71 of the third-side seal portion 7 and one end 81 of the fourth-side seal portion 8 and the length of the short side of the tray are generally about 50 to 80 mm. When the distance L (the length of the short side of the tray) is in such a range, it is effective that the distances T1 and T2 are in the above-mentioned range.

[0035] Incidentally, as for the tray, the outer edge distance L (or the length of the short side of the tray) between one end 71 of the third side seal portion 7 and one end 81 of the fourth side seal portion 8 may be 40 mm or less. Since the lengths (distances T1, T2) of the flap portions 31 that protrude a predetermined length from the first side flange portion 24 of the tray 2 do not affect the opening strength of the seal, they can be arbitrarily set according to the product. For example, when a user with restricted finger movement, such as a rheumatoid patient, opens the package, setting T1 and T2 to be somewhat larger is effective for the opening property. In this case, it is desirable to make the width of the short side of the sheet-like lid portion 3 about the same. This is for the following reason. The user holds the medical device packaging container 1 with the palm from the bottom side of the tray 2. That is, since the width of the short side of the sheet-like lid portion 3 is held with the palm, this width is set to be graspable. Therefore, if T1 and T2 are also the same length as this width, it can be grasped well. Incidentally, even if it is longer than this, since it is difficult to expect an improvement in the grip, the maximum protrusion length is preferably the same as or about the same as the width of the short side of the sheet-like lid portion 3 (the distances T1 and T2 are 100 / 100 of the outer edge distance L between one end 71 of the third side seal portion 7 and one end 81 of the fourth side seal portion 8). Also, if the length of the flap portion 31 is too short, it becomes difficult to grasp and difficult to open. Therefore, if the protrusion length of the flap portion is about half the length that can be grasped by hand, the flap portion can be sufficiently grasped with the fingers. Therefore, the protrusion length of the flap portion is preferably set to be 1 / 2 of the width of the short side of the flap portion 31 or the width of the short side of the tray (the distances T1 and T2 are around 50 / 100 of the outer edge distance L between one end 71 of the third side seal portion 7 and one end 81 of the fourth side seal portion 8) as the lower limit.

[0036] Also, as shown in FIG. 2, the sheet-like lid portion 3 is provided with a protruding portion 35 that protrudes from the outer edge of the tray 2 and the annular heat seal portion 4 over the entire circumference. There is no flange portion 23 of the tray 2 on the lower surface of this protruding portion 35. As shown in FIG. 15, the sheet-like lid portion 3 of this embodiment includes a base material layer 33 and an adhesive resin layer 34 provided on the lower surface of the base material layer 33. The adhesive resin layer 34 may be provided over the entire lower surface of the base material layer 33, or may be provided only on the heat seal forming portion of the sheet-like lid portion 3.

[0037] As the material for forming the base material layer 33, a sheet formed of polyolefins such as polyester, polypropylene, and polyethylene, polyester such as nylon and PET, a thermoplastic nonwoven fabric sheet made of synthetic resin such as polyethylene and polypropylene, etc. are used. In addition, as the sheet-like lid portion 3, depending on the medical device to be stored or the necessity of sterilization, those having gas permeability or those having gas barrier properties are selected. When it is to have gas permeability, as the base material layer, those having gas permeability such as a synthetic resin nonwoven fabric sheet are used.

[0038] Also, when it is to have gas barrier properties, a gas barrier sheet is selected. The gas barrier sheet suppresses the permeation of moisture from the inside of the packaging container or the permeation of oxygen from the outside. As the gas barrier sheet, a metal foil such as aluminum, silver, and gold, or a metal vapor deposition sheet with aluminum, silver, gold, etc. vapor-deposited on the surface, an inorganic vapor deposition sheet with SiO X etc. vapor-deposited on the surface, a gas barrier resin sheet, for example, a sheet of polyvinylidene chloride, polyvinylidene chloride - polyvinyl chloride, polyvinylidene chloride - acrylate copolymer, high-density polyethylene, etc. can be preferably used.

[0039] The adhesive resin layer is for heat-sealing the base material layer to the tray 2 in a peelable manner. For example, as the adhesive resin layer, olefin resins such as ethylene - vinyl acetate resin, ethylene - acrylic acid resin, a blend of polypropylene and polyethylene, etc., a two-component curable urethane dry laminate adhesive, low-melting-point polyethylene, etc. can be used.

[0040] Also, as the sheet-like lid portion 3, it may have a surface protective layer on the surface of the base material layer 33. The surface protective layer is formed by coating a synthetic resin, for example, polyester, polypropylene, polyethylene, nylon, PET, epoxy resin, polyamide resin, or by laminating the above synthetic resin films, paper, etc.

[0041] As shown in Fig. 2, the packaging container 1 for medical instruments of the present invention includes an annular heat seal portion 4 that detachably fixes the sheet-like lid portion 3 onto the annular flange portion 23 of the tray 2. The annular heat seal portion 4 of this embodiment is formed in an endless belt shape and has a rectangular outer edge. As shown in Figs. 2, 6 to 8, the annular heat seal portion 4 has a first side seal portion 5 and a second side seal portion 6 facing each other, and a third side seal portion 7 and a fourth side seal portion 8 that are located between the first side seal portion 5 and the second side seal portion 6 and face each other. The third side seal portion 7 and the fourth side seal portion 8 are parallel to each other.

[0042] In the annular heat seal portion 4 of this embodiment, the first side seal portion 5 and the second side seal portion 6 are short side portions, and the third side seal portion 7 and the fourth side seal portion 8 are long side portions. One end of the third side seal portion 7 and the fourth side seal portion 8 is located on the second side of a predetermined length from the first side seal portion 5. Note that the first side seal portion 5, the second side seal portion 6, the third side seal portion 7, and the fourth side seal portion 8 may have substantially the same length.

[0043] The first side seal portion 5 is formed on the first side flange portion 24, the first corner flange portion 28, and the second corner flange portion 29 of the tray 2. The second side seal portion 6 is formed on the second side flange portion 25, the third side seal portion 7 is formed on the third side flange portion 26, and the fourth side seal portion 8 is formed on the fourth side flange portion 27.

[0044] The first side seal portion 5 includes a central seal portion 51, a first side portion seal portion 52 that obliquely extends to connect one end 51a of the central seal portion 51 and one end 71 of the third side seal portion 7, and a second side portion seal portion 53 that obliquely extends to connect the other end 51b of the central seal portion 51 and one end 81 of the fourth side seal portion 8. The central seal portion 51 is located on the first side flange portion 24, the first side portion seal portion 52 is located on the first corner flange portion 28, and the second side portion seal portion 53 is located on the second corner flange portion 29.

[0045] The central seal portion 51 is formed on the central portion of the first side flange portion 24, is shorter than the entire length of the first side flange portion 24, and has a length about half of the entire length of the first side flange portion 24. Also, as shown in FIG. 7, the length of the central seal portion 51 (the distance M between one end 51a and the other end 51b of the central seal portion 51) is 45 / 100 to 55 / 100 of the outer edge distance L between one end 71 of the third side seal portion 7 and one end 81 of the fourth side seal portion 8. Preferably, the distance M is 47 / 100 to 53 / 100 of the distance L.

[0046] Also, in the central seal portion 51 of this embodiment, as shown in FIGS. 2 and 6, including the extending portions 54 and 55 described later, its outer edge does not reach the outer edge of the flange portion 23, and a non-heat-sealed portion (non-heat-sealed part) is formed between the outer edge of the flange portion 23 and the outer edge of the central seal portion 51. Also, in the central seal portion 51 of this embodiment, its inner edge does not reach the inner edge of the flange portion 23, and a non-heat-sealed portion (non-heat-sealed part) is formed between the inner edge of the flange portion 23 and the inner edge of the central seal portion 51. And the central seal portion 51 is preferably linear as in this embodiment, but may be curved or wavy.

[0047] The central seal portion 51 of the first side seal portion 5 and the second side seal portion 6 are parallel to each other. The third side seal portion 7 and the fourth side seal portion 8 are parallel to each other. The third side seal portion 7 and the fourth side seal portion 8 are orthogonal to the central seal portion 51 of the first side seal portion 5 and the second side seal portion 6. And, as shown in FIGS. 2, 6 and 7, the first side seal portion 5 includes two central seal extending portions 54 and 55 that extend from the outer edge of the central seal portion 51 and extend in the direction of the outer edge of the first side flange portion 24. The central seal extending portions 54 and 55 are spaced apart by a predetermined length.

[0048] The first side seal part 52 of the first side seal part 5 extends obliquely so as to connect one end 51a of the central seal part 51 and one end 71 of the third side seal part 7. As shown in FIG. 7, the inclination angle R1 of the virtual line connecting one end 51a of the central seal part 51 and one end 71 of the third side seal part 7 with respect to the third side seal part 7 is preferably from 30 degrees to 60 degrees. In particular, the inclination angle R1 is preferably from 40 degrees to 50 degrees.

[0049] Similarly, the second side seal part 53 of the first side seal part 5 extends obliquely so as to connect the other end 51b of the central seal part 51 and one end 81 of the fourth side seal part 8. As shown in FIG. 7, the inclination angle R2 of the virtual line connecting the other end 51b of the central seal part 51 and one end 81 of the fourth side seal part 8 with respect to the fourth side seal part 7 is preferably from 30 degrees to 60 degrees. In particular, the inclination angle R2 is preferably from 40 degrees to 50 degrees.

[0050] Also, as shown in FIG. 7, the inclination angle R3 of the virtual line connecting one end 51a of the central seal part 51 and one end 71 of the third side seal part 7 with respect to the central seal part 51 is preferably from 30 degrees to 60 degrees. In particular, the inclination angle R3 is preferably from 40 degrees to 50 degrees. Similarly, the inclination angle R4 of the virtual line connecting the other end 51b of the central seal part 51 and one end 81 of the fourth side seal part 8 with respect to the central seal part 51 is preferably from 30 degrees to 60 degrees. In particular, the inclination angle R4 is preferably from 40 degrees to 50 degrees.

[0051] The length N of the first side seal part 52 (the distance between one end 51a of the central seal part 51 and one end 71 of the third side seal part 7) is preferably substantially equal to the distance M (the length of the central seal part 51) between one end 51a and the other end 51b of the central seal part 51. Specifically, the length N of the first side seal part 52 is preferably from 90 / 100 to 110 / 100 of the length M of the central seal part 51, and in particular, preferably from 95 / 100 to 105 / 100.

[0052] The length P of the second side seal portion 53 (the distance between the other end 51b of the central seal portion 51 and one end 81 of the fourth side seal portion 8) is preferably substantially equal to the distance M (the length of the central seal portion 51) between one end 51a and the other end 51b of the central seal portion 51. Specifically, the length P of the second side seal portion 53 is preferably 90 / 100 to 110 / 100 of the length M of the central seal portion 51, and particularly preferably 95 / 100 to 105 / 100.

[0053] Also, the length P of the second side seal portion 53 is preferably substantially equal to the length N of the first side seal portion 52. Specifically, the length P of the second side seal portion 53 is preferably 90 / 100 to 110 / 100 of the length N of the first side seal portion 52, and particularly preferably 95 / 100 to 105 / 100. The distance between one end 51a and the other end 51b of the central seal portion 51 is preferably substantially the same as the distance between one end 51a of the central seal portion 51 and one end 71 of the third side seal portion 7.

[0054] The first side seal portion 52 and the second side seal portion 53 are preferably linear as in this embodiment, but may be curved or wavy. And, as shown in FIGS. 2, 6, and 7, the first side seal portion 5 includes two central seal extension portions 54 and 55 that extend from the outer edge of the central seal portion 51 and extend in the direction of the outer edge of the first side flange portion 24. The central seal extension portions 54 and 55 are spaced apart by a predetermined length.

[0055] The central seal extension portion 54 of this embodiment is formed at the connection portion (corner portion) between one end 51a of the central seal portion 51 and the first side seal portion 52, and the central seal extension portion 55 is formed at the connection portion (corner portion) between the other end 51b of the central seal portion 51 and the second side seal portion 53. Therefore, the central seal extension portions 54 and 55 partially extend from the central seal portion 51 and partially extend from the first side seal portion 52 or the second side seal portion 53. The separation distance between the central seal extension portions 54 and 55 is preferably 27 to 39 mm, and particularly preferably 30 to 35 mm.

[0056] Also, like the packaging container 1a for medical instruments in the embodiment shown in FIG. 11, the central seal extension portions 54a and 55a may be provided not at the connection portions (corners) of one end 51a of the central seal portion 51 and the first side seal portion 52 and the connection portion (corner) of the other end 51b of the central seal portion 51 and the second side seal portion 53, but on the central seal portion 51 itself. In this case, it is preferable to provide the central seal extension portions 54a and 55a at positions slightly closer to the center than both ends of the central seal portion 51.

[0057] Furthermore, the number of the central seal extension portions is not limited to two as in the above-described embodiment, and may be provided with a third central seal extension portion 58 like the packaging container 1b for medical instruments in the embodiment shown in FIG. 12. In this case, it is preferable that the third central seal portion 58 is located between the central seal extension portions 54 and 55. Also, the number of the central seal extension portions is preferably 2 to 5, and particularly preferably 2 or 3.

[0058] And the outer edges of the tips of the central seal extension portions 54 and 55 have a rounded shape without corners. Also, the outer edges of the entire extension portions of the central seal extension portions 54 and 55 in this embodiment have a rounded shape without corners. Furthermore, in the central seal extension portions 54 and 55 of this embodiment, all the outer edges are formed by curves and do not have straight portions. Such is preferable, but the central seal extension portions 54 and 55 may have straight portions 54b and 54c like the extension portion 54a shown in FIG. 10. Also, the central seal extension portions 54 and 55 are not limited to those in a partial circular shape (sector shape, crescent shape) as in this embodiment, and may be triangular, rectangular, or polygonal as long as the outer edges of the tips have a rounded shape without corners.

[0059] Then, as shown in FIGS. 2, 6 to 8, the first side seal portion 5 includes a first side seal extension portion 56 extending from the outer edge of the first side seal portion 52 and a second side seal extension portion 57 extending from the outer edge of the second side seal portion 53. As shown in FIGS. 2, 6 to 8, the first side seal extension portion 56 is formed at the central portion of the first side seal portion 52, and the second side seal extension portion 57 is formed at the central portion of the second side seal portion 53.

[0060] The first side seal extension portion 56 and the second side seal extension portion 57 are in a form in which the outer edge of the tip portion has a rounded shape without corners. In the first side seal extension portion 56 and the second side seal extension portion 57 of this embodiment, the entire outer edge of the extension portion has a rounded shape without corners. Further, in the first side seal extension portion 56 and the second side seal extension portion 57 of this embodiment, the outer edge is formed entirely by a curve and has no straight portion. Such is preferable, but the first side seal extension portion 56 and the second side seal extension portion 57 may have straight portions 56b, 56c, 56d as in the extension portion 56a shown in FIG. 9.

[0061] Also, the first side seal extension portion 56 and the second side seal extension portion 57 are not limited to being rectangular as in this embodiment, and may be in a partial circular shape (for example, fan-shaped, semi-circular, crescent-shaped), triangular shape, or polygonal shape as long as the outer edge of the tip portion has a rounded shape without corners.

[0062] Also, as shown in FIG. 8, the extension length H of the first side seal extension portion 56 and the second side seal extension portion 57 is preferably 2 to 5 mm, and particularly preferably 3 to 4 mm. Further, the width W at the central portion of the first side seal extension portion 56 and the second side seal extension portion 57 is preferably 2 to 5 mm, and particularly preferably 3 to 4 mm.

[0063] Then, as shown in Fig. 2, the outer edge of the second side seal portion 6 and the outer edge of the second side flange portion 25 of the tray 2 are substantially coincident. A non-heat-sealed portion (non-heat-sealed part) is formed between the inner edge of the second side seal portion 6 and the inner edge of the second side flange portion 25 of the tray 2. The outer edge of the third side seal portion 7 and the outer edge of the third side flange portion 26 of the tray 2 are substantially coincident. A non-heat-sealed portion (non-heat-sealed part) is formed between the inner edge of the third side seal portion 7 and the inner edge of the third side flange portion 26 of the tray 2. Similarly, the outer edge of the fourth side seal portion 8 and the outer edge of the fourth side flange portion 27 of the tray 2 are substantially coincident. A non-heat-sealed portion (non-heat-sealed part) is formed between the inner edge of the fourth side seal portion 8 and the inner edge of the fourth side flange portion 27 of the tray 2.

[0064] The seal width of the annular heat seal portion 4 is preferably the same width except for the central seal extension portions 54, 55, the first side seal extension portion 56, and the second side seal extension portion 57, and is preferably 2 to 5 mm. In particular, 3 to 5 mm is preferable. Note that the seal widths only need to be substantially the same, and there may be a variation of 2 mm or less. The variation in the seal width is preferably 1 mm or less. Specifically, the widths of the central seal portion 51, the first side seal portion 52, the second side seal portion 53, the second side seal portion 6, the third side seal portion 7, and the fourth side seal portion 8 are preferably 2 to 5 mm. Also, the widths of the central seal portion 51, the first side seal portion 52, the second side seal portion 53, the second side seal portion 6, the third side seal portion 7, and the fourth side seal portion 8 are preferably substantially the same. As the formation conditions of the annular heat seal portion 4, the heat seal temperature varies depending on the tray and the forming material of the sheet-like lid portion used, but is preferably 110 to 130 °C, 1 to 3 seconds, 4 to 6 kgf / cm 2 is preferable.

[0065] Also, like the packaging container 1c for medical instruments of the embodiment shown in FIG. 13, the first side seal portion 52 may include a first first side seal extension portion 56 and a second first side seal extension portion 59a, and the two extension portions are provided at a predetermined distance apart. Similarly, the second side seal portion 53 may also include a first second side seal extension portion 57 and a second second side seal extension portion 59b, and the two extension portions are provided at a predetermined distance apart.

[0066] The packaged medical instrument of the present invention comprises the above-described packaging container 1 for medical instruments and a medical instrument 10 housed in the medical instrument storage portion 22 of the tray 2. The tray 2 has its upper end opening 21 detachably sealed by a sheet-like lid portion 3 in a state where the medical instrument 10 is housed.

[0067] As the medical instrument 10, as shown in FIGS. 1, 2, and 17, any medical instrument that can be housed in the tray 2 and sealed by the sheet-like lid portion 3 may be used. In this embodiment, a prefilled syringe as shown in FIG. 16 is used as the medical instrument 10. In particular, the prefilled syringe of this embodiment uses a self-administered prefilled syringe. Many self-administered prefilled syringes are equipped with an administration assistance function. The self-administered prefilled syringe 10 includes a main body portion 12 having an administration assistance function and a prefilled syringe 11 housed in the main body portion 12.

[0068] The prefilled syringe 11 includes an outer cylinder 14, a gasket 15 slidably housed in the outer cylinder 14, a plunger 17 attached to the gasket, an injection needle 16 fixed to the tip of the outer cylinder 14, and a drug housed in a space formed by the outer cylinder 14 and the gasket 15.

[0069] Examples of drugs include anti-rheumatic drugs, protein preparations, antibody preparations, hyaluronic acid, antibacterial drugs, antiviral drugs, vaccines, anti-tumor drugs, immunosuppressive drugs, steroid drugs, anti-inflammatory drugs, arthritis treatment drugs, antihistamine drugs, anti-allergy drugs, diabetes treatment drugs, hormone agents such as growth hormone, bone calcium metabolism drugs, vitamins, blood preparations, hematopoietic drugs, antithrombotic drugs, antihyperlipidemic drugs, antiarrhythmic drugs, vasodilators, prostaglandins, calcium antagonists, ACE inhibitors, β-blockers, antihypertensive drugs, diuretics, xanthine derivatives, β-agonists, anti-asthma drugs, antitussive drugs, expectorants, anticholinergic drugs, antidiarrheal drugs, stomachic and digestive drugs, anti-ulcer drugs, laxatives, sleeping pills, sedatives, antipyretics, cold remedies, antiepileptic drugs, antipsychotic drugs, antidepressants, anxiolytics, central nervous stimulants, parasympathomimetics, sympathomimetics, antiemetics, central stimulants, anti-Parkinson's drugs, muscle relaxants, antispasmodics, anesthetics, antipruritics, anti-headache drugs, oligonucleotides, gene drugs, and the like.

[0070] As shown in Fig. 16, the self-administered prefilled syringe 10 has an injection needle cap 18 in front of the main body 12, two finger hooks 13a, 13b at the rear of the main body, and a pressing part 19 at the rear end of the plunger 17. And as shown in Figs. 4, 5 and 17, the tray 2 of this embodiment has a main body storage part in the center, a cap storage part 63 in front of it (on the flange 25 side), two ridges 67a, 67b for restricting the movement of the two finger hooks at the rear of the main body storage part (on the flange 24 side), two finger hook storage parts 66a, 66b, a plunger storage part 65, and a pressing part storage part 64 for storing the self-administered prefilled syringe 10.

[0071] The movement of the self-administered prefilled syringe 10 in the cap direction is restricted by the two ridges 67a, 67b, and the movement in the pressing part direction is restricted by the rear parts (the surfaces facing the ridges) of the two finger hook storage parts 66a, 66b. As a result, the self-administered prefilled syringe 10 is stored in the tray 2 in a substantially immovable state. Also, the self-administered prefilled syringe 10 is taken out from the tray 2 by gripping the main body of the self-administered prefilled syringe 10 in the main body storage.

[0072] Next, with reference to FIGS. 2 and 4, the operation of the packaging container for medical instruments and the packaged medical instruments of the present invention will be described. In the packaging container 1 for medical instruments and the packaged medical instruments of the present invention, as described above, the central seal extension portions 54 and 55, the first side seal extension portion 56, and the second side seal extension portion 57 have a rounded shape with no corners at the outer edges of the tip portions, and have no corners (edges) where stress is likely to concentrate. Therefore, during transportation, dropping, etc., peeling of the unanticipated heat seal portion is less likely to occur, and thus a medical instrument packaged in a good sealed state is provided.

[0073] Then, during use, the operator grips the flap portion 31 of the sheet-like lid portion 3 and performs peeling. When the operator grips the central portion on the short side of the flap portion 31 of the sheet-like lid portion 3 and pulls it substantially parallel to the longitudinal direction of the tray, peeling starts from the central seal extension portions 54 and 55. With respect to the central seal portion 51, the tips of the central seal extension portions 54 and 55 are easily peelable and function as a good peeling start portion. Following the peeling of the central seal extension portions 54 and 55, the central seal portion 51, the first side seal portion 52, and the second side seal portion 53 are peeled, and then the third side seal portion 7 and the fourth side seal portion 8 are peeled. As a result, the medical instrument 10 stored in the tray 2 can be taken out. When it is desired to completely peel the sheet-like lid portion 3 from the tray 2, the second side seal portion 6 is peeled.

[0074] Further, when an operator grips near one corner of the flap portion 31 of the sheet-like lid portion and pulls obliquely in the longitudinal direction of the tray 2, specifically, when pulling from the first corner flange portion 28 of the tray 2 toward the fourth corner flange portion 62, peeling starts from the first side seal extension portion 56. With respect to the first side seal portion 52, the tip of the first side seal extension portion 56 can be easily peeled off and functions as a good peeling start portion. Following the peeling of the first side seal extension portion 56, the first side seal portion 52, the center seal portion 51, the third side seal portion 7, the second side seal portion 53, and the fourth side seal portion 8 are peeled off. Thereby, the medical instrument 10 stored in the tray 2 can be taken out. When it is desired to completely peel the sheet-like lid portion 3 from the tray 2, the entire annular heat seal 4 is peeled off.

[0075] Further, when an operator grips near the other corner of the flap portion 31 of the sheet-like lid portion and pulls obliquely in the longitudinal direction of the tray 2, specifically, when pulling from the second corner flange portion 29 of the tray 2 toward the third corner flange portion 61, peeling starts from the second side seal extension portion 57. With respect to the second side seal portion 53, the tip of the second side seal extension portion 57 can be easily peeled off and functions as a good peeling start portion. Following the peeling of the second side seal extension portion 57, the second side seal portion 53, the center seal portion 51, the fourth side seal portion 8, the first side seal portion 52, and the third side seal portion 7 are peeled off. Thereby, the medical instrument 10 stored in the tray 2 can be taken out. When it is desired to completely peel the sheet-like lid portion 3 from the tray 2, the entire annular heat seal 4 is peeled off.

Industrial Applicability

[0076] The packaging container for medical instruments of the present invention is as follows. (1) A packaging container for medical instruments having a tray with an upper end opening and a medical instrument storage portion, and a sheet-like lid portion for closing the upper end opening of the tray, wherein the tray includes an annular flange portion provided on the entire circumference of the upper end opening, The packaging container detachably fixes the sheet-like lid portion on the annular flange portion and includes an annular heat-sealing portion having a rectangular outer edge. The annular heat-sealing portion has a first-side sealing portion and a second-side sealing portion facing each other, and a third-side sealing portion and a fourth-side sealing portion that are located between the first-side sealing portion and the second-side sealing portion and face each other. The sheet-like lid portion includes a flap portion that protrudes from the first-side sealing portion of the annular heat-sealing portion. One end of the third-side sealing portion and the fourth-side sealing portion is located on the second-side sealing portion side by a predetermined length from the first-side sealing portion. The first-side sealing portion includes a central sealing portion, a first side portion sealing portion that obliquely extends to connect one end of the central sealing portion and one end of the third-side sealing portion, and a second side portion sealing portion that obliquely extends to connect the other end of the central sealing portion and one end of the fourth-side sealing portion. The first-side sealing portion includes two central seal extension portions that extend from the outer edge of the central sealing portion and are spaced apart by a predetermined length, a first side portion seal extension portion that extends from the outer edge of the first side portion sealing portion, and a second side portion seal extension portion that extends from the outer edge of the second side portion sealing portion. The outer edges of the tips of the central seal extension portion, the first side portion seal extension portion, and the second side portion seal extension portion have a rounded shape without corners. Furthermore, the distance between one end and the other end of the central sealing portion is 45 / 100 to 55 / 100 of the distance between the outer edges of one end of the third-side sealing portion and one end of the fourth-side sealing portion, which is a packaging container for medical instruments.

[0077] In this packaging container for medical instruments, the first-side sealing portion includes two central seal extension portions that extend from the outer edge of the central sealing portion and are spaced apart by a predetermined length, a first side portion seal extension portion that extends from the outer edge of the first side portion sealing portion, and a second side portion seal extension portion that extends from the outer edge of the second side portion sealing portion. Furthermore, the distance between one end and the other end of the central sealing portion is 45 / 100 to 55 / 100 of the distance between the outer edges of one end of the third-side sealing portion and one end of the fourth-side sealing portion. Therefore, by gripping the flap portion of the sheet-like lid portion and pulling it substantially parallel to the longitudinal direction of the tray, pulling it obliquely in the longitudinal direction of the tray from the first corner portion of the tray close to the peeling start portion, or pulling it obliquely in the longitudinal direction of the tray from the second corner portion facing the first corner portion of the tray and close to the peeling start portion, the sheet-like lid portion can be satisfactorily peeled from the tray. In addition, since the central seal extension portion, the first side seal extension portion, and the second side seal extension portion have a rounded shape with no corners at the outer edges of their tip portions, the first side seal portion has no so-called seal-weakening portion, so accidental peeling of the heat-sealed portion is less likely to occur.

[0078] Also, the above-described embodiments may be as follows. (2) The medical instrument packaging container according to (1) above, wherein the first side seal portion and the second side seal portion are short side portions, and the third side seal portion and the fourth side seal portion are long side portions. (3) The medical instrument packaging container according to (1) or (2) above, wherein the third side seal portion and the fourth side seal portion are parallel to each other. (4) The medical instrument packaging container according to any one of (1) to (3) above, wherein the third side seal portion and the fourth side seal portion are orthogonal to the central seal portion and the second side seal portion of the first side seal portion. (5) The medical instrument packaging container according to any one of (1) to (4) above, wherein the inclination angle of the virtual line connecting the one end of the central seal portion and the one end of the third side seal portion with respect to the third side seal portion is 30 degrees to 60 degrees. (6) The medical instrument packaging container according to any one of (1) to (5) above, wherein the inclination angle of the virtual line connecting the other end of the central seal portion and the one end of the fourth side seal portion with respect to the fourth side seal portion is 30 degrees to 60 degrees. (7) The medical instrument packaging container according to any one of (1) to (6) above, wherein the distance between the one end and the other end of the central seal portion is substantially the same as the distance between the one end of the central seal portion and the one end of the third side seal portion. (8) The distance between the one end and the other end of the central seal part is substantially the same as the distance between the other end of the central seal part and the one end of the fourth side seal part. The packaging container for medical instruments according to any one of (1) to (7) above. (9) The seal length of the central seal part is substantially the same as the seal length of the first side seal part and the seal length of the second side seal part. The packaging container for medical instruments according to any one of (1) to (8) above. (10) The seal width of the annular heat seal part is the same except for the central seal extension part, the first side seal extension part, and the second side seal extension part. The packaging container for medical instruments according to any one of (1) to (9) above. (11) The seal width of the annular heat seal part is the same width except for the central seal extension part, the first side seal extension part, and the second side seal extension part, and is 2 to 5 mm. The packaging container for medical instruments according to any one of (1) to (10) above.

[0079] Moreover, the medical instrument of the present invention is as follows. (12) It consists of the packaging container for medical instruments according to any one of (1) to (11) above and the medical instrument stored in the medical instrument storage part of the tray. In the state where the medical instrument is stored in the tray, the upper end opening part is detachably sealed by the sheet-like lid part. The packaged medical instrument.

[0080] Also, the above embodiment may be as follows. (13) The packaged medical instrument according to (12) above, wherein the medical instrument is a self-administered prefilled syringe.

Claims

1. A packaging container for medical instruments, comprising a tray having an upper opening and a medical instrument storage portion, and a sheet-like lid portion for closing the upper opening of the tray, The tray is provided with an annular flange portion provided on the entire circumference of the upper opening, The packaging container for medical instruments detachably fixes the sheet-like lid portion on the annular flange portion and includes an annular heat seal portion having a rectangular outer edge, The annular heat seal portion has a first side seal portion and a second side seal portion facing each other, and a third side seal portion and a fourth side seal portion located between the first side seal portion and the second side seal portion and facing each other, The sheet-like lid portion is provided with a flap portion protruding from the first side seal portion of the annular heat seal portion, One end of the third side seal portion and the fourth side seal portion is located on the second side seal portion side by a predetermined length from the first side seal portion, The first side seal portion includes a central seal portion, a first side portion seal portion extending obliquely connecting one end of the central seal portion and the one end of the third side seal portion, and a second side portion seal portion extending obliquely connecting the other end of the central seal portion and the one end of the fourth side seal portion, The first side seal portion includes two central seal extension portions extending from the outer edge of the central seal portion and separated by a predetermined length, a first side portion seal extension portion extending from the outer edge of the first side portion seal portion, and a second side portion seal extension portion extending from the outer edge of the second side portion seal portion, The outer edges of the tips of the central seal extension portion, the first side portion seal extension portion, and the second side portion seal extension portion have a rounded shape without corners, Further, a distance between one end and the other end of the central seal portion is 45 / 100 to 55 / 100 of a distance between the outer edges of one end of the third side seal portion and one end of the fourth side seal portion. A packaging container for medical instruments, characterized in that.

2. The medical device packaging container according to claim 1, wherein the first side seal portion and the second side seal portion are short side portions, and the third side seal portion and the fourth side seal portion are long side portions.

3. The medical device packaging container according to claim 1 or 2, wherein the third side seal portion and the fourth side seal portion are parallel to each other.

4. The medical device packaging container according to any one of claims 1 to 3, wherein the third side seal portion and the fourth side seal portion are orthogonal to the central seal portion and the second side seal portion of the first side seal portion.

5. The medical device packaging container according to any one of claims 1 to 4, wherein the inclination angle of the virtual line connecting the one end of the central seal portion and the one end of the third side seal portion with respect to the third side seal portion is 30 degrees to 60 degrees.

6. The medical device packaging container according to any one of claims 1 to 5, wherein the inclination angle of the virtual line connecting the other end of the central seal portion and the one end of the fourth side seal portion with respect to the fourth side seal portion is 30 degrees to 60 degrees.

7. The medical device packaging container according to any one of claims 1 to 6, wherein the distance between the one end and the other end of the central seal portion is substantially the same as the distance between the one end of the central seal portion and the one end of the third side seal portion.

8. The medical device packaging container according to any one of claims 1 to 7, wherein the distance between the one end and the other end of the central seal portion is substantially the same as the distance between the other end of the central seal portion and the one end of the fourth side seal portion.

9. The medical device packaging container according to any one of claims 1 to 8, wherein the length of the seal of the central seal portion is substantially the same as the length of the seal of the first side seal portion and the length of the seal of the second side seal portion.

10. The sealing width of the annular heat-sealing portion is the same except for the central seal extension portion, the first side portion seal extension portion, and the second side portion seal extension portion, and the packaging container for medical instruments according to any one of claims 1 to 9.

11. The sealing width of the annular heat-sealing portion is the same width except for the central seal extension portion, the first side portion seal extension portion, and the second side portion seal extension portion, and is 2 to 5 mm, and the packaging container for medical instruments according to any one of claims 1 to 10.

12. A packaged medical instrument comprising the packaging container for medical instruments according to any one of claims 1 to 11 and a medical instrument stored in the medical instrument storage portion of the tray, wherein the upper end opening portion is detachably sealed by the sheet-like lid portion in a state where the medical instrument is stored in the tray.

13. The packaged medical instrument according to claim 12, wherein the medical instrument is a self-administered prefilled syringe.

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