OUTER CAP OF LIQUID MEDICINE-INJECTING DEVICE

20200330698 ยท 2020-10-22

    Inventors

    Cpc classification

    International classification

    Abstract

    The present invention relates to an outer cap of a liquid medicine-injecting device, and more particularly, to an apparatus in which an outer cap configured to temporarily form a suction flow passage only upon suction of a liquid medicine and to be removed for opening an injection flow passage upon injection of the liquid medicine is improved in a liquid medicine-injecting device including a filter for filtering foreign substances contained in a liquid medicine, so that firm sealing is established between an inner peripheral surface of the outer cap and a peripheral surface of the liquid medicine-injecting device so as to reliably generate a negative pressure in the injection flow passage and particularly to prevent the liquid medicine from penetrating an injection needle upon suction of the liquid medicine.

    Claims

    1. An outer cap of a liquid medicine-injecting device, the outer cap comprising a suction needle for sucking a liquid medicine and a cap hub hermetically coupled to the liquid medicine-injecting device, the outer cap having an internal space extending from the suction needle to the cap hub, wherein the internal space is formed with an injection needle-receiving portion for receiving an injection needle when the liquid medicine-injecting device is assembled; and wherein a sealing means configured to be in contact with a peripheral surface of the liquid medicine-injecting device so as to maintain airtightness between the inner space and the injection needle-receiving portion when the liquid medicine-injecting device is assembled is provided at an inlet of the injection needle-receiving portion.

    2. The outer cap of the liquid medicine-injecting device of claim 1, wherein the sealing means is an hermetic contact end integrally extending from an inner wall of the outer cap and having a section to be brought into contact with the peripheral surface of the liquid medicine-injecting device.

    3. The outer cap of the liquid medicine-injecting device of claim 2, wherein the hermetic contact end is formed with a thin flesh portion opposite to the inner wall of the outer cap and having a thickness smaller than that of the hermetic contact end so that the hermetic contact end may be brought into contact with the peripheral surface of the liquid medicine-injecting device by means of resilient flexibility.

    4. The outer cap of the liquid medicine-injecting device of claim 3, wherein an elastic hermetic member is provided on the hermetic contact end such that the elastic hermetic member is disposed between the hermetic contact end and the peripheral surface of the liquid medicine-injecting device.

    5. The outer cap of the liquid medicine-injecting device of claim 4, wherein a plurality of unidirectional inclined wings are formed on an inner peripheral surface of the elastic hermetic member such that they are arranged to be inclined in an assembly direction of the liquid medicine-injecting device, thereby forming a plurality of hermetic structures composed of the unidirectional inclined wings between the elastic hermetic member and the peripheral surface of the liquid medicine-injecting device.

    6. The outer cap of the liquid medicine-injecting device of claim 1, wherein the sealing means is a ring-shaped elastic hermetic body provided on the inner wall of the outer cap and having a section to be brought into resilient contact with the peripheral surface of the liquid medicine-injecting device.

    7. The outer cap of the liquid medicine-injecting device of claim 6, wherein a plurality of unidirectional inclined wings are formed on an inner peripheral surface of the ring-shaped elastic hermetic body such that they are arranged to be inclined in an assembly direction of the liquid medicine-injecting device, thereby forming a plurality of hermetic structures composed of the unidirectional inclined wings between the ring-shaped elastic hermetic body and the peripheral surface of the liquid medicine-injecting device.

    8. The outer cap of the liquid medicine-injecting device of claim 5, wherein a control protrusion for controlling opening and closing of the one-way valve means provided in the liquid medicine-injecting device is integrally and protrudingly formed on the inner wall of the outer cap.

    9. The outer cap of the liquid medicine-injecting device of claim 7, wherein a control protrusion for controlling opening and closing of the one-way valve means provided in the liquid medicine-injecting device is integrally and protrudingly formed on the inner wall of the outer cap.

    Description

    DESCRIPTION OF DRAWINGS

    [0031] FIG. 1 is an exploded perspective view illustrating a conventional syringe.

    [0032] FIG. 2 is an exploded perspective view illustrating a conventional filter-cap syringe.

    [0033] FIG. 3 is a sectional view illustrating a main portion of the conventional filter-cap syringe.

    [0034] FIG. 4 is a view illustrating an outer cap of a liquid medicine-injecting device according to the present invention.

    [0035] FIG. 5 is an exploded view illustrating the outer cap of the liquid medicine-injecting device according to the present invention.

    [0036] FIG. 6 is a sectional view illustrating a first embodiment of the outer cap of the liquid medicine-injecting device according to the present invention.

    [0037] FIG. 7 is an exploded sectional view illustrating the first embodiment of the outer cap of the liquid medicine-injecting device according to the present invention.

    [0038] FIG. 8 is a sectional view illustrating a main portion of a modified example of the first embodiment of the outer cap of the liquid medicine-injecting device according to the present invention.

    [0039] FIG. 9 is a sectional view illustrating a main portion of another modified example of the first embodiment of the outer cap of the liquid medicine-injecting device according to the present invention.

    [0040] FIG. 10 is a sectional view illustrating a main portion of a second embodiment of the outer cap of the liquid medicine-injecting device according to the present invention.

    [0041] FIG. 11 is a sectional view illustrating a main portion of a modified example of the second embodiment of the outer cap of the liquid medicine-injecting device according to the present invention.

    BEST MODE

    [0042] FIG. 4 is a view illustrating an outer cap of a liquid medicine-injecting device according to the present invention, and FIG. 5 is an exploded view illustrating the outer cap of the liquid medicine-injecting device according to the present invention.

    [0043] Further, FIG. 6 is a sectional view illustrating a first embodiment of the outer cap of the liquid medicine-injecting device according to the present invention, and FIG. 7 is an exploded sectional view illustrating the first embodiment of the outer cap of the liquid medicine-injecting device according to the present invention.

    [0044] Moreover, FIG. 8 is a sectional view illustrating a main portion of a modified example of the first embodiment of the outer cap of the liquid medicine-injecting device according to the present invention, and FIG. 9 is a sectional view illustrating a main portion of another modified example of the first embodiment of the outer cap of the liquid medicine-injecting device according to the present invention.

    [0045] Finally, FIG. 10 is a sectional view illustrating a main portion of a second embodiment of the outer cap of the liquid medicine-injecting device according to the present invention, and FIG. 11 is a sectional view illustrating a main portion of a modified example of the second embodiment of the outer cap of the liquid medicine-injecting device according to the present invention.

    [0046] As illustrated in FIGS. 4 to 11, an outer cap of a liquid medicine-injecting device according to the present invention is configured that firm sealing is established between an inner peripheral surface of the outer cap 100 and a peripheral surface of the liquid medicine-injecting device 200 so as to stably generate a negative pressure in a suction flow passage upon suction of a liquid medicine so that the liquid medicine-injecting device 200 having a filter more firmly sucks the liquid medicine, and particularly to prevent the liquid medicine from penetrating an injection needle 210 upon suction of the liquid medicine so that the injection needle 210 is fundamentally prevented from being contaminated by a liquid medicine that has not yet undergone filtration, thereby maximizing marketability and user's safety of the liquid medicine-injecting device 200 having the filter.

    [0047] Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

    [0048] Hereinafter, for convenience of explanation, all flow passages extending from various types of liquid medicine containers including a vial to the liquid medicine-injecting device 200 coupled with the injection needle 210 will be collectively referred to as the suction flow passage, and all flow passages extending from the liquid medicine-injecting device 200 to the injection needle 210 inserted into a human body will be collectively referred to as an injection flow passage.

    [0049] Here, the liquid medicine-injecting device 200 includes all of various types of devices, which incorporate a syringe, a connector, a three-way valve and the like and may directly inject a liquid medicine or may be accessorily utilized to inject a liquid medicine.

    [0050] The outer cap 100 of the liquid medicine-injecting device 200 according to the present invention includes a suction needle 110 for sucking the liquid medicine and a cap hub 120 hermetically coupled to the liquid medicine-injecting device 200, and the outer cap 100 has an internal space extending from the suction needle 110 to the cap hub 120, wherein the internal space is formed with an injection needle-receiving portion 130 for receiving the injection needle 210 when the liquid medicine-injecting device 200 is assembled; and wherein a sealing means configured to be in contact with a peripheral surface of the liquid medicine-injecting device 200 so as to maintain airtightness between the inner space and the injection needle-receiving portion 130 when the liquid medicine-injecting device 200 is assembled is provided at an inlet of the injection needle-receiving portion 130.

    [0051] First of all, as illustrated in FIG. 4, the outer cap 100 of the liquid medicine-injecting device according to the present invention is basically to suck a liquid medicine from a liquid medicine container and includes the suction needle 110 and the cap hub 120, wherein the suction needle 110 is configured to have an inclined tip so as to pierce a vial, which is one of various packages for liquid medicines, or the like, and is made of a metal material or synthetic resin material to have high strength.

    [0052] In addition, the cap hub 120 is integrally formed with the suction needle 110 to support the suction needle, and as illustrated in FIG. 6, an inner peripheral surface of the cap hub 120 is engaged with an outer peripheral surface of the liquid medicine-injecting device 200, which is coupled with the injection needle 210, to maintain airtightness.

    [0053] It is preferable to mold the outer cap 100 as a unitary member. Alternatively, in consideration of moldability due to a complicated sectional structure formed in the outer cap, the outer cap may be manufactured by molding two or more components with a synthetic resin material as illustrated in FIG. 5 and then integrating the components by means of a known bonding or fusing method or the like as illustrated in FIG. 4.

    [0054] Accordingly, the internal space extending from the suction needle 110 to the cap hub 120 is defined within the outer cap 100, and the internal space of the outer cap 100 will be utilized as the suction flow passage for sucking the liquid medicine into the liquid medicine-injecting device 200.

    [0055] Particularly, according to the present invention, the injection needle-receiving portion 130 is defined in the internal space of the outer cap 100 as illustrated in FIG. 6.

    [0056] The injection needle-receiving portion 130 is in the shape of an elongated pipe such that the injection needle 210 may be received in the injection needle-receiving portion, and a distal end of the injection needle-receiving portion is closed, while the inlet of the injection needle-receiving portion is opened to enable the injection needle 210 to enter and exit the injection needle-receiving portion.

    [0057] That is, when the outer cap 100 is assembled to the liquid medicine-injecting device 200, the injection needle 210 that is located at a front end of the liquid medicine-injecting device 200 to form the injection flow passage is placed within the injection needle-receiving portion 130.

    [0058] This injection needle-receiving portion 130 is also integrally formed as a part of the outer cap 100, and a bridge 101 is formed to support the injection needle-receiving portion 130 so that the injection needle-receiving portion 130 may be supported without impeding a flow of the liquid medicine.

    [0059] Additionally, according to the present invention, the sealing means configured to be in contact with the peripheral surface of the liquid medicine-injecting device 200 in response to assembly of the liquid medicine-injecting device 200 so as to maintain airtightness between the inner space and the injection needle-receiving portion 130 is provided at the inlet of the injection needle-receiving portion 130.

    [0060] That is, since the airtightness between the inner space of the outer cap 100 and the injection needle-receiving portion 130 is maintained by means of the sealing means, the injection needle 210 is prevented from being contaminated by a liquid medicine that has not yet undergone filtration, while the injection flow passage remains in a closed state.

    [0061] However, when the outer cap 100 is removed, the injection needle 210 forming the injection flow passage is exposed as shown in FIG. 7 to switch the injection flow passage from the closed state to an open state.

    [0062] The sealing means performing such a function may be a structure formed inside the outer cap 100 or may be a separate component.

    [0063] Hereinafter, the present invention will be described by way of distinct embodiments: a first embodiment in which the structural sealing means integrally formed inside the outer cap 100 is employed, and a second embodiment in which the sealing means in the form of the separate component is employed inside the outer cap 100.

    First Embodiment

    [0064] In the first embodiment of the outer cap of the liquid medicine-injecting device according to the present invention, it is preferable that the sealing means is an hermetic contact end 140, which integrally extends from an inner wall of the outer cap 100 and has a section to be brought into contact with the peripheral surface of the liquid medicine-injecting device 200.

    [0065] That is, as illustrated in FIG. 6, the sealing means in the first embodiment may consist of the hermetic contact end 140 formed on the inner wall of the outer cap 100.

    [0066] The hermetic contact end 140 extends from the inner wall of the outer cap 100, more specifically, from a portion at which the injection needle-receiving portion 130 meets the bridge 101, by a certain length to be brought into contact with the peripheral surface of the liquid medicine-injecting device 200.

    [0067] It will be preferable that in order to enhance the airtightness, the hermetic contact end 140 is brought into surface contact with the liquid medicine-injecting device 200 rather than line contact therewith.

    [0068] As a result, when the outer cap 100 is assembled to the liquid medicine-injecting device 200, the injection needle 210 is placed in the injection needle-receiving portion 130, while the inlet of the injection needle-receiving portion 130 is maintained in a hermetic state by the hermetic contact end 140 which is in contact with the peripheral surface of the liquid medicine-injecting device 200.

    [0069] Additionally, in the present invention, it is preferable that the hermetic contact end 140 is formed with a thin flesh portion 150 opposite to the inner wall of the outer cap 100 and having a thickness smaller than that of the hermetic contact end 140 as illustrated in FIG. 8 so that the hermetic contact end 140 may be brought into contact with the peripheral surface of the liquid medicine-injecting device 200 by means of resilient flexibility.

    [0070] That is, the thin flesh portion 150 is formed on a root side of the hermetic contact end 140, so that the thin flesh portion 150 may be resiliently bent and elastically support the hermetic contact end 140.

    [0071] Accordingly, the hermetic contact end 140 can be resiliently brought into contact with the peripheral surface of the liquid medicine-injecting device 200, thereby more firmly maintaining the airtightness.

    [0072] In addition, in the present invention, it is preferable that an elastic hermetic member 160 is provided on the hermetic contact end 140 as illustrated in FIG. 8 such that the elastic hermetic member 160 is disposed between the hermetic contact end 140 and the peripheral surface of the liquid medicine-injecting device 200.

    [0073] That is, the thin flesh portion 150 is formed to enhance the airtightness as described above, and at the same time, the elastic hermetic member 160 made of rubber or preferably silicone is provided on the hermetic contact end 140, so that firmer airtightness may be maintained between the hermetic contact end 140 and the peripheral surface of the liquid medicine-injecting device 200.

    [0074] The elastic hermetic member 160 may be separately formed in a ring shape and then installed to be supported by the hermetic contact end 140, or the elastic hermetic member 160 may be separately formed in a cover shape and then installed to cover the hermetic contact end 140 such that the elastic hermetic member is supported by the hermetic contact end. There is no limitation on the shape or assembly structure of the elastic hermetic member.

    [0075] In particular, in the present invention, it will be most preferable that as illustrated in FIG. 9, a plurality of unidirectional inclined wings 161 are formed on an inner peripheral surface of the elastic hermetic member 160 such that they are arranged to be inclined in an assembly direction of the liquid medicine-injecting device 200, thereby forming a plurality of hermetic structures, which are composed of the unidirectional inclined wings 161, between the elastic hermetic member 160 and the peripheral surface of the liquid medicine-injecting device 200.

    [0076] Accordingly, by forming the plurality of unidirectional inclined wings 161 on the inner peripheral surface of the elastic hermetic member 160 such that they are inclined in an upward direction on the figure, which is the assembly direction of the liquid medicine-injecting device 200, when the outer cap 100 is assembled to the liquid medicine-injecting device 200, tips of the plurality of unidirectional inclined wings 161 come into contact with the peripheral surface of the liquid medicine-injecting device 200, thereby forming the plurality of the hermetic structures.

    [0077] Since the unidirectional inclined wings 161 configured as described above are deformed to be in closer contact with the peripheral surface of the liquid medicine-injecting device 200 when a negative pressure acts on the suction flow passage, the hermetic structures having high waterproofness can be firmly formed between the hermetic contact end 140 and the peripheral surface of the liquid medicine-injecting device 200.

    Second Embodiment

    [0078] In a second embodiment of the outer cap of the liquid medicine-injecting device according to the present invention, it is preferable that as illustrated in FIG. 10, the sealing means is a ring-shaped elastic hermetic body 170 provided on the inner wall of the outer cap 100 and having a section that is to be brought into resilient contact with the peripheral surface of the liquid medicine-injecting device 200.

    [0079] That is, the second embodiment of the present invention is different from the aforementioned first embodiment in that the hermetic contact end 140 integrally extending from the inner wall of the outer cap 100 is formed in the first embodiment, whereas the ring-shaped elastic hermetic body 170 is configured as a separate component in the second embodiment.

    [0080] Of course, a configuration for fixing the ring-shaped elastic hermetic body 170 to the outer cap 100 would be required.

    [0081] For example, a separate support protrusion 190 may be formed to extend from the outer cap 100 to a desired position, and the ring-shaped elastic hermetic body 170 may be then fixed to the support protrusion 190.

    [0082] It will be apparent that there may be various variations of the outer cap 100 for fixing the ring-shaped elastic hermetic body 170.

    [0083] Particularly, in the present invention, it is most preferable that as illustrated in FIG. 11, a plurality of unidirectional inclined wings 171 are formed on an inner peripheral surface of the ring-shaped elastic hermetic body 170 such that they are arranged to be inclined in the assembly direction of the liquid medicine-injecting device 200, thereby forming a plurality of hermetic structures, which are composed of the unidirectional inclined wings 171, between the ring-shaped elastic hermetic body 170 and the peripheral surface of the liquid medicine-injecting device 200.

    [0084] Accordingly, by forming the plurality of unidirectional inclined wings 171 on the inner peripheral surface of the ring-shaped elastic hermetic body 170 such that they are inclined in an upward direction on the figure, which is the assembly direction of the liquid medicine-injecting device 200, when the outer cap 100 is assembled to the liquid medicine-injecting device 200, tips of the plurality of unidirectional inclined wings 171 come into contact with the peripheral surface of the liquid medicine-injecting device 200, thereby forming the plurality of the hermetic structures.

    [0085] Since the unidirectional inclined wings 171 configured as described above are deformed to be in closer contact with the peripheral surface of the liquid medicine-injecting device 200 when a negative pressure acts on the suction flow passage, the hermetic structures having high waterproofness can be firmly formed between the ring-shaped elastic hermetic body 170 and the peripheral surface of the liquid medicine-injecting device 200.

    [0086] Although description has been made with regard to the configuration and operation in which the hermetic contact end 140 or the ring-shaped elastic hermetic body 170 as the sealing means is provided in the aforementioned outer cap 100 according to the present invention so that the injection needle 210 is isolated from the suction flow passage and the injection needle 210 is maintained in a closed state, the entire operation of the liquid medicine-injecting device 200 together with the outer cap 100 will be described below.

    [0087] Here, as described above, the liquid medicine-injecting device 200 includes all of various types of devices, which incorporate a syringe, a connector, a three-way valve and the like and may directly inject a liquid medicine or may be accessorily utilized to inject a liquid medicine.

    [0088] Hereinafter, for convenience of explanation, the liquid medicine-injecting device 200 including the injection needle 210 composed of a needle body 211 and a hub 212, a one-way valve means 220 for enabling the liquid medicine to flow only in one direction, a fixing ring 230 for preventing detachment of the one-way valve means 220, and a filter 240 for filtering foreign substances from the liquid medicine in the injection flow passage will be described by way of example.

    [0089] That is, in the present invention, upon suction of the liquid medicine, the one-way valve means 220 in the suction flow passage is deformed and opened as shown in FIG. 6 and the liquid medicine from which foreign substances are not filtered is then sucked into the liquid medicine-injecting device 200. During the suction of the liquid medicine, the hermetic contact end 140 or the ring-shaped elastic hermetic body 170, which is the sealing means of the present invention, closes the injection needle 210 located in the injection flow passage.

    [0090] On the contrary, upon injection of the liquid medicine, the outer cap 100 is removed to open the injection needle 210 located in the injection flow passage as illustrated in FIG. 7, whereas the suction flow passage is closed by the one-way valve means 220.

    [0091] According to embodiments, the opening and closing of the one-way valve means 220 may be controlled by itself depending on an acting direction of pressure generated in the liquid medicine-injecting device 200 or may be controlled simply depending on whether the outer cap 100 is detached.

    [0092] In this regard, since Korean Patent No. 10-1563723 commonly assigned to the applicant of this application discloses a configuration in which opening and closing of such a valve means are controlled depending on whether a cap is detached, a detailed description thereof will be omitted.

    [0093] Particularly, in the present invention, it is preferable that a control protrusion 180 for controlling the opening and closing of the one-way valve means 220 provided in the liquid medicine-injecting device 200 is integrally and protrudingly formed on the inner wall of the outer cap 100 so that the opening and closing of the one-way valve means can be adjusted by itself depending on the acting direction of the pressure generated in the liquid medicine-injecting device 200 and simultaneously can be adjusted depending on whether the outer cap 100 is detached.

    [0094] For example, if the control protrusion 180 is not formed, the one-way valve means 220 is opened and closed only depending on the acting direction of the pressure from the liquid medicine-injecting device 200. The opening and closing are not adjusted depending on whether the outer cap 100 is detached.

    [0095] However, if the control protrusion 180 is formed, the control protrusion 180 causes the deformation of the one-way valve means 220 when the outer cap 100 is assembled, so that the one-way valve means 220 always remains in an open state in the state where the outer cap 100 is assembled.

    [0096] Accordingly, there is an advantage that convenient use can be achieved even in a case where the liquid medicine has been sucked when the outer cap 100 has been assembled and is then discharged as it is, such as a case where the liquid medicine has been sucked and is not injected directly into a human body, for example, even in a case where a saline solution has been sucked and is then injected into a liquid medicine container accommodating a powder medicine to dissolve the powder medicine in the saline solution and subsequently a mixture of the powder medicine and the saline solution is sucked again.

    [0097] Meanwhile, since a conventional one-way valve means 220 was made of an elastic material, there was a case where the one-way valve means 220 did not withstand pressure acting on a filter 240 upon injection of a liquid medicine and consequently was detached.

    [0098] In order to prevent such detachment of the one-way valve means, it is possible to firmly secure the one-way valve means 220 to the liquid medicine-injecting device 200 by using the fixing ring 230.

    [0099] Moreover, the injection needle 210 is coupled to the front end of the liquid medicine-injecting device 200, and the filter 240 capable of filtering various kinds of foreign substances including minute glass particles contained in the liquid medicine is provided inside the injection needle 210.

    [0100] Accordingly, upon injection of the liquid medicine, the liquid medicine that has passed through the one-way valve means 220 is subjected to filtration of the foreign substances by the filter 240 and then injected into a human body through the injection needle 210.

    [0101] Of course, it is also possible to add a additional filter in the suction flow passage, if necessary.

    [0102] As a result, not only foreign substances contained in the liquid medicine but also foreign substances remaining inside the liquid medicine-injecting device 200 in a manufacturing process can be filtered, and the filtered liquid medicine can be then safely injected.

    [0103] With this configuration, the suction flow passage of the liquid medicine starts from the liquid medicine container and reaches the liquid medicine-injecting device 200 through the suction needle 110 of the outer cap 100 and the one-way valve means 220.

    [0104] On the contrary, the injection flow passage starts from the liquid medicine-injecting device 200 and reaches the injection needle 210 through the filter 240.

    [0105] As for the outer cap of the liquid medicine-injecting device according to the present invention described above, the opening and closing of the one-way valve means 220 depends on whether the outer cap 100 is assembled, wherein when a negative pressure acts on the liquid medicine-injecting device 200, the one-way valve means 220 is opened as illustrated in FIG. 6 to perform suction of the liquid medicine.

    [0106] On the contrary, when a positive pressure acts on the liquid medicine-injecting device 200 in a state where the outer cap 100 is simply detached upon injection of the liquid medicine, the one-way valve means 220 is closed as shown in FIG. 7, so that the liquid medicine passes through the filter 240 to filter foreign substances and is then injected through the injection needle 210.

    [0107] Accordingly, the outer cap 100 of the liquid medicine-injecting device according to the present invention has advantages in that firm sealing is established between the inner peripheral surface of the outer cap 100 and the peripheral surface of the liquid medicine-injecting device 200 so as to stably generate a negative pressure in the suction flow passage upon suction of the liquid medicine so that the liquid medicine-injecting device 200 having the filter 240 more firmly sucks the liquid medicine, and particularly to prevent the liquid medicine from penetrating the injection needle 210 upon suction of the liquid medicine so that the injection needle 210 is fundamentally prevented from being contaminated by a liquid medicine that has not yet undergone filtration, thereby maximizing marketability and user's safety of the liquid medicine-injecting device having the filter 240.

    [0108] Particularly, since the liquid medicine can be injected only by sucking the liquid medicine in the state where the outer cap 100 is assembled and then detaching the outer cap 100, there is also an advantage in that user's convenience can be greatly improved.

    [0109] Moreover, if the control protrusion 180 is further formed, there is another advantage in that the liquid medicine can be rapidly discharged without passing through the filter 240 even in a state where the outer cap 100 is not detached.

    [0110] The aforementioned embodiments are merely examples for specifically explaining the spirit of the present invention, and the scope of the present invention is not limited to the figures and embodiments.

    EXPLANATION OF REFERENCE NUMERALS

    [0111]

    TABLE-US-00001 100: Outer cap 101: Bridge 110: Suction needle 120: Cap hub 130: Injection needle-receiving 140: Hermetic contact end portion 150: Thin flesh portion 160: Elastic hermetic member 161: Unidirectional inclined 170: Ring-shaped elastic wing hermetic body 171: Unidirectional inclined 180: Control protrusion wing 190: Support protrusion 200: Liquid medicine-injecting device 210: Injection needle 211: Needle body 212: Hub 220: One-way valve means 230: Fixing ring 240: Filter