WO2022210964A1 - 針アッセンブリ - Google Patents
針アッセンブリ Download PDFInfo
- Publication number
- WO2022210964A1 WO2022210964A1 PCT/JP2022/016267 JP2022016267W WO2022210964A1 WO 2022210964 A1 WO2022210964 A1 WO 2022210964A1 JP 2022016267 W JP2022016267 W JP 2022016267W WO 2022210964 A1 WO2022210964 A1 WO 2022210964A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- needle cover
- needle
- movable
- movable needle
- cover portion
- Prior art date
Links
- 239000003814 drug Substances 0.000 claims description 42
- 239000000243 solution Substances 0.000 claims description 33
- 238000002347 injection Methods 0.000 claims description 32
- 239000007924 injection Substances 0.000 claims description 32
- 229940079593 drug Drugs 0.000 claims description 30
- 239000007788 liquid Substances 0.000 claims description 14
- 239000003550 marker Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 description 11
- 238000007906 compression Methods 0.000 description 11
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- NOESYZHRGYRDHS-UHFFFAOYSA-N insulin Chemical compound N1C(=O)C(NC(=O)C(CCC(N)=O)NC(=O)C(CCC(O)=O)NC(=O)C(C(C)C)NC(=O)C(NC(=O)CN)C(C)CC)CSSCC(C(NC(CO)C(=O)NC(CC(C)C)C(=O)NC(CC=2C=CC(O)=CC=2)C(=O)NC(CCC(N)=O)C(=O)NC(CC(C)C)C(=O)NC(CCC(O)=O)C(=O)NC(CC(N)=O)C(=O)NC(CC=2C=CC(O)=CC=2)C(=O)NC(CSSCC(NC(=O)C(C(C)C)NC(=O)C(CC(C)C)NC(=O)C(CC=2C=CC(O)=CC=2)NC(=O)C(CC(C)C)NC(=O)C(C)NC(=O)C(CCC(O)=O)NC(=O)C(C(C)C)NC(=O)C(CC(C)C)NC(=O)C(CC=2NC=NC=2)NC(=O)C(CO)NC(=O)CNC2=O)C(=O)NCC(=O)NC(CCC(O)=O)C(=O)NC(CCCNC(N)=N)C(=O)NCC(=O)NC(CC=3C=CC=CC=3)C(=O)NC(CC=3C=CC=CC=3)C(=O)NC(CC=3C=CC(O)=CC=3)C(=O)NC(C(C)O)C(=O)N3C(CCC3)C(=O)NC(CCCCN)C(=O)NC(C)C(O)=O)C(=O)NC(CC(N)=O)C(O)=O)=O)NC(=O)C(C(C)CC)NC(=O)C(CO)NC(=O)C(C(C)O)NC(=O)C1CSSCC2NC(=O)C(CC(C)C)NC(=O)C(NC(=O)C(CCC(N)=O)NC(=O)C(CC(N)=O)NC(=O)C(NC(=O)C(N)CC=1C=CC=CC=1)C(C)C)CC1=CN=CN1 NOESYZHRGYRDHS-UHFFFAOYSA-N 0.000 description 10
- 229940090048 pen injector Drugs 0.000 description 9
- 102000004877 Insulin Human genes 0.000 description 5
- 108090001061 Insulin Proteins 0.000 description 5
- 229940125396 insulin Drugs 0.000 description 5
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 206010012601 diabetes mellitus Diseases 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 230000013632 homeostatic process Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3202—Devices for protection of the needle before use, e.g. caps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3216—Caps placed transversally onto the needle, e.g. pivotally attached to the needle base
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
- A61M5/3245—Constructional features thereof, e.g. to improve manipulation or functioning
- A61M2005/3247—Means to impede repositioning of protection sleeve from needle covering to needle uncovering position
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
- A61M5/326—Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user
- A61M2005/3267—Biased sleeves where the needle is uncovered by insertion of the needle into a patient's body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/58—Means for facilitating use, e.g. by people with impaired vision
- A61M2205/583—Means for facilitating use, e.g. by people with impaired vision by visual feedback
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
- A61M5/326—Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user
Definitions
- the present disclosure relates to needle assemblies. Specifically, the present disclosure relates to a needle assembly that includes a hollow needle through which a medical fluid can flow and that is replaceably attached to a pen-type injector containing a medical fluid.
- the number of diabetes patients in the world will continue to increase in the future. Specifically, the number of diabetes patients in the world is about 400 million or more at present, and is said to increase to about 700 million in about 30 years.
- In order to treat diabetes it is necessary to maintain homeostasis of blood glucose level, and insulin administration is indispensable for this purpose.
- a method of administering insulin for example, a method of using a combination of a pen-type injector containing an insulin solution and a needle assembly having a hollow needle through which the drug solution can flow is known. According to this method, insulin is administered after attaching a needle assembly to a pen-type injector and puncturing a patient or the like with a hollow needle.
- the pen-type injector and the needle assembly in combination, it is required to protect the safety of the hollow needle after puncturing the patient or the like and administering a drug solution such as insulin.
- a drug solution such as insulin.
- the need for safety protection of the above-mentioned hollow needles is higher from the viewpoint of preventing a medical worker from being accidentally stabbed by a used hollow needle with blood after a drug solution has been administered to a patient or the like.
- the hollow needle attached to the pen-type injector is generally a replaceable disposable type, it may be necessary to have a simple structure and a low cost.
- an object of the present disclosure is to provide a needle assembly capable of automatically capping the hollow needle, preventing re-projection of the hollow needle, and providing a simple structure.
- the movable needle cover portion after axial rotation is movable in the opposite direction by the force portion, and the movable needle cover portion after the axial rotation that has completed the movement in the opposite direction is moved to the above direction.
- a needle assembly is provided that is lockable with the casing.
- the needle assembly it is possible to automatically cap the hollow needle, prevent re-projection of the hollow needle, and provide a simple structure.
- FIG. 1A is a schematic perspective view of a needle assembly (with full cover) according to one embodiment of the present disclosure
- FIG. 1B is a schematic perspective view of a needle assembly (without the overall cover) according to one embodiment of the present disclosure
- FIG. Fig. 2 is a schematic cross-sectional view of a needle assembly according to one embodiment of the present disclosure
- FIG. 3 is a perspective view schematically showing a movable needle cover.
- FIG. 4A is a perspective view schematically showing a tubular portion
- FIG. 4B is a cross-sectional view schematically showing the tubular portion.
- FIG. 5A is a perspective view schematically showing a needle support (with a hollow needle).
- FIG. 5B is a plan view schematically showing the needle support.
- FIG. 6 is a cross-sectional view schematically showing an urging portion.
- FIG. 7A is a perspective view schematically showing a casing;
- FIG. 7B is a perspective view schematically showing a casing in which the internal structure is visually recognizable.
- FIG. 7C is a cross-sectional view schematically showing the casing.
- FIG. 8 is a perspective view schematically showing the overall cover.
- FIG. 9A is a perspective view schematically illustrating an operational flow (before use) of an assembly according to one embodiment of the present disclosure;
- FIG. 9B is a cross-sectional view that schematically illustrates an operational flow (before use) of an assembly according to an embodiment of the present disclosure;
- FIG. 9A is a perspective view schematically illustrating an operational flow (before use) of an assembly according to one embodiment of the present disclosure;
- FIG. 9B is a cross-sectional view that schematically illustrates an operational flow (before use) of an assembly according to an embodiment of the present disclosure;
- FIG. 10A shows the operation flow of the assembly according to one embodiment of the present disclosure (during one-way movement of the movable needle cover/lower end of the side surface of the movable needle cover to the first cylindrical projection of the cylindrical portion) is a perspective view schematically showing the state of contact).
- FIG. 10B shows the operation flow of the assembly according to the embodiment of the present disclosure (middle of one-way movement of the movable needle cover/lower end of the side surface of the movable needle cover to the first cylindrical protrusion of the cylinder) is a cross-sectional view schematically showing the state of contact).
- FIG. 10A shows the operation flow of the assembly according to one embodiment of the present disclosure (during one-way movement of the movable needle cover/lower end of the side surface of the movable needle cover to the first cylindrical projection of the cylindrical portion) is a perspective view schematically showing the state of contact).
- FIG. 10B shows the operation flow of the assembly according to the embodiment of the present disclosure (middle of one-way movement
- FIG. 11A schematically shows an operation flow of an assembly according to an embodiment of the present disclosure (during unidirectional movement of the movable needle cover/at the start of axial rotation of the first cylindrical projecting portion of the cylindrical portion). It is a perspective view.
- FIG. 11B schematically shows the operation flow of the assembly according to the embodiment of the present disclosure (during one-way movement of the movable needle cover/at the start of axial rotation of the first cylindrical projecting portion of the cylindrical portion). It is a sectional view.
- FIG. 12A schematically shows an operation flow of an assembly according to an embodiment of the present disclosure (during unidirectional movement of the movable needle cover/at the completion of axial rotation of the first cylindrical projecting portion of the cylindrical portion). It is a perspective view.
- FIG. 12B schematically shows the operation flow of the assembly according to the embodiment of the present disclosure (during unidirectional movement of the movable needle cover/at the completion of axial rotation of the first cylindrical projecting portion of the cylindrical portion). It is a sectional view.
- FIG. 13A is a perspective view schematically showing the operational flow of the assembly according to one embodiment of the present disclosure (on completion of unidirectional movement of the movable needle cover portion);
- FIG. 13B is a cross-sectional view schematically showing the operational flow of the assembly according to one embodiment of the present disclosure (on completion of unidirectional movement of the movable needle cover portion);
- FIG. 13A is a perspective view schematically showing the operational flow of the assembly according to one embodiment of the present disclosure (on completion of unidirectional movement of the movable needle cover portion);
- FIG. 13B is a cross-sectional view schematically showing the operational flow of the assembly according to one embodiment of the present disclosure (on completion of unidirectional movement of the movable needle cover portion);
- FIG. 14A is a perspective view schematically showing the operational flow of the assembly according to one embodiment of the present disclosure (when the movable needle cover portion has completed moving in the opposite direction);
- FIG. 14B is a cross-sectional view schematically showing the operational flow of the assembly according to one embodiment of the present disclosure (when the movable needle cover portion has completed moving in the opposite direction);
- the inventors of the present application have diligently studied solutions to enable automatic capping of the hollow needle, prevention of re-projection of the hollow needle, and provision of a simple structure, and as a result, the needle according to an embodiment of the present disclosure We have come to provide the assembly.
- a needle assembly 100 according to an embodiment of the present disclosure may be replaceably attached to a pen-type injector 200 with a drug solution therein.
- a needle assembly 100 according to an embodiment of the present disclosure comprises, as components, a casing 50 having an opening 51 and at least partially within the casing 50 . It comprises a movable needle cover portion 10, a cylindrical portion 20, a needle support portion 30 supporting a hollow needle 60, and an urging portion 40, which are configured to be accommodated.
- Needle assembly 100 according to an embodiment of the present disclosure further comprises an overall cover 70 that can cover these components prior to use. In use, this overall cover 70 can be removed (see FIG. 1A).
- the needle assembly 100 is configured by integrally combining the above components (the movable needle cover portion 10, the tubular portion 20, the needle support portion 30 with the hollow needle 60, the biasing portion 40, and the casing 50). .
- the constituent elements of the needle assembly 100 can be mainly composed of resin members, except for the hollow needle 60 .
- the constituent material of the resin member is not particularly limited, but may be at least one selected from the group consisting of polyethylene, polypropylene, polystyrene, and ABS (acrylonitrile-butadiene-styrene resin).
- the hollow needle 60 can be constructed from a metal member such as stainless steel.
- the term "when using the needle assembly 100" in this specification refers to a state in which at least the entire cover (not shown) is removed.
- the term "one direction” as used herein refers to a direction in which the movable needle cover 10 is pushed down and the end 60a of the hollow needle 60 on the liquid medicine injection side can protrude outward.
- the term “opposite direction” as used herein means a direction opposite to the direction in which the drug solution injection side end 60a of the hollow needle 60 protrudes outward, that is, the movable needle cover portion 10 is pushed up and the drug solution injection side end is pushed up. It refers to the direction in which the portion 60a is accommodated inside the movable needle cover portion 10.
- the casing 50 is configured to accommodate at least a portion of each of the movable needle cover portion 10, the tubular portion 20, the hollow needle support portion 30 with the needle 60, and the biasing portion 40 (Fig. 1B). , FIGS. 2 and 7A-7C).
- Casing 50 comprises an opening 51 through which movable needle cover 10 can move.
- the opening 51 can be formed on the upper surface 56 side of the casing 50 .
- the casing 50 has, on its side surface 52, an engaged portion 53 which is formed at a predetermined interval and which can be engaged with a first needle cover projecting portion 12 of the movable needle cover portion 10, which will be described later. It consists Specifically, at least the distal end side 53a of the engaged portion 53 can be engaged with the first needle cover projection 12 after the movable needle cover 10 is pushed up in the opposite direction to be described later. It's becoming On the other hand, the engaged portion 53 is the projection of the first needle cover portion of the movable needle cover portion 10 before the push-down movement (corresponding to before the shaft rotation) and in the middle of the push-down movement (corresponding to the middle of the shaft rotation). It is designed not to lock with the portion 12 .
- the locked portion 53 of the casing 50 and the first needle cover portion projecting portion 12 of the movable needle cover portion 10 are aligned. Opposed, coaxial, and/or coaxial.
- the engaged portion 53 of the casing 50 and the first needle cover portion projecting portion 12 of the movable needle cover portion 10 are in contact with each other. Non-opposite, non-coaxial, and/or non-aligned.
- the casing 50 can have not only the opening 51 (hereinafter referred to as the first opening) through which the movable needle cover 10 can pass, but also a second opening 55 on the side surface 52 .
- the locked portion 53 may correspond to the lower edge of the contoured portion forming the second opening 55 formed in the side surface of the casing 50 .
- slits 54 are formed along the longitudinal direction of the side surfaces 52 from both ends of the locked portion 53 (corresponding to the lower edge of the contoured portion forming the second opening 55). preferably. Formation of the slit 54 can provide flexibility to the locked portion 53 (corresponding to the lower edge of the contoured portion forming the second opening 55). As a result, as compared with the case where the slit 54 is not formed, the part of the first needle cover projection 12 that protrudes outward through the second opening 55 can be smoothly locked to the locked portion 53 . can be done.
- the locked portion 53 of the casing 50 has the following form. Specifically, it is preferable that the inner side surface of the engaged portion 53 forming a part of the inner side surface 52 a of the casing 50 is a slope surface 57 .
- the slope surface 57 (that is, the inclined surface) is a surface that continues downward and inward from the tip side 53a of the locked portion 53. As shown in FIG. Specifically, the slope surface 57 is configured to gradually incline inward toward the distal end side 53a.
- the thickness of the engaged portion 53 can be increased toward the distal end side 53a. Therefore, since the strength of the locked portion 53 is improved as a whole, the locked state is continuously maintained even after the first needle cover projection 12 is locked to the distal end side 53 a of the locked portion 53 . can do.
- the thickness of the locked portion 53 can be reduced toward the side opposite to the distal end side 53a. Therefore, as a whole, the flexibility of the locked portion 53 is improved, so that the first needle cover protruding portion 12 can be easily locked to the distal end side 53 a of the locked portion 53 . .
- the number of slope surfaces 57 corresponds to the number of first needle cover projections 12 of the movable needle cover 10 .
- the number of slope surfaces 57 is also two correspondingly.
- two sloped surfaces 57 are correspondingly arranged opposite each other (see FIGS. 7B and 7C).
- the inner side surface of the engaged portion is a linear portion extending in the vertical direction, and the tip side of the engaged portion is in the form of a latch (claw) portion partially extending inward from the linear surface.
- a steep wall-like inner flank can be formed between the collinear portion and the latch (claw) portion. Therefore, there is a possibility that the first needle cover projection 12 may get caught on the inner side surface of the steep wall.
- the first needle cover portion protrusion may occur during the upward movement of the movable needle cover portion 10, which will be described later. It is possible to preferably prevent the shaped portion 12 from being caught on the inner side surface of the locked portion 53 until it is locked to the tip side 53 a of the locked portion 53 .
- the slope surface 57 with which the first needle cover projection 12 can contact the locked portion 53 can be formed only in the central region 53b of the locked portion 53 instead of the entire inner side surface.
- the contact area between the first needle cover projection 12 and the inner side surface of the locked portion 53 can be reduced while the movable needle cover 10 is being pushed up, which will be described later. Therefore, since the contact resistance between the two can be reduced, the upward movement of the movable needle cover portion 10 can be performed more smoothly.
- the lower region of the outer side surface 52b of the casing 50 may further have rib portions 58 arranged at predetermined intervals.
- the presence of such rib portion 58 allows it to function as a finger rest when removing pen injector 200 from needle assembly 100 after needle assembly 100 has been used. Specifically, by hooking a finger on the rib portion 58 (or the rib portion 31c provided on the outer surface of the base portion 31 of the needle support portion 30) and rotating the shaft, the needle assembly 100 can be moved from the needle support portion 30, that is, the needle assembly 100. The pen injector 200 can be removed from the .
- the movable needle cover part 10 covers the hollow needle 60 supported by the needle support part 30 when not in use and through which the liquid medicine can flow. 1A to 3).
- part of the movable needle cover part 10 covers the hollow needle 60 located outside the opening 51 of the casing 50 , and the remaining part is housed inside the casing 50 .
- the injection side end portion 60a of the hollow needle 60 can protrude outward. At this time, substantially all of the movable needle cover portion 10 can be housed inside the casing 50 .
- the movable needle cover part 10 has a substantially cylindrical shape, and the cylindrical part 20 is positioned in the inner region 17 thereof.
- Movable needle cover portion 10 comprises one or more first needle cover portion projections 12 formed on outer side surface 11 .
- two first needle cover projections 12 are provided that are arranged opposite each other.
- the shape of the first needle cover projecting portion 12 is such that it can be engaged with the engaged portion 53 of the casing 50 when the movable needle cover 10 moves in the downward direction (one direction).
- the shape of the first needle cover projecting portion 12 is such that when the movable needle cover 10 is moved in the push-up direction (opposite direction), it does not engage with the engaged portion 53 of the casing 50 and does not engage with the engaged portion. It is a shape that can get over 53.
- the first needle cover projection 12 has a wing shape.
- the first needle cover projection 12 has one end 12a attached to the outer side surface 11 of the movable needle cover 10, and the other end 12b directed downward toward the side lower end 16 side. It can be a wing-like member.
- the first needle cover protruding portion 12 is arranged in such a manner that the outer side surface 11 and the first needle cover portion projecting portion 12 extend toward the other end 12b. It is possible to include a configuration in which the distance from the needle cover protruding portion 12 (wing portion) gradually increases.
- the substantially cylindrical movable needle cover portion 10 can have an inclined surface 13 at its lateral lower end 16 . As will be described later, it is not essential for the movable needle cover portion 10 to have the inclined surface 13 at the lower side end portion 16 , and at least one of the lower side end portion 16 and the first tubular projection 22 of the tubular portion 20 is It suffices if it has an inclined surface.
- the substantially cylindrical movable needle cover portion 10 has a notch portion 15 continuous to a side lower end portion 16 capable of coming into contact with a first cylindrical projecting portion 22 to be described later.
- the notch portion 15 can be formed by forming a recessed portion 14 of the side lower end portion 16 in the upward direction of the movable needle cover portion 10 (corresponding to the opposite direction). That is, the side lower end portion 16 of the movable needle cover portion 10 has a portion that abuts against the first tubular projection 22 and a convex portion that is continuous with this abutting portion.
- the position of the cutout portion 15 is adjusted so that the cutout portion 15 and a first cylindrical projecting portion 22, which will be described later, are substantially coaxial after the movable needle cover portion 10 is axially rotated. ing. As a result, the movable needle cover portion 10 can be further pushed down in one direction (the push-down direction) without coming into contact with the first tubular projecting portion 22 again after the shaft rotation is completed.
- the movable needle cover part 10 further has a second needle cover part projecting part 19 on the inner side surface 18 .
- the second needle cover projection 19 can be formed, for example, inside the side lower end 16 of the movable needle cover 10 .
- the second needle cover projection 19 has the following features. Specifically, when the movable needle cover portion 10 is moved in the push-down direction, the second needle cover portion projection portion 19 moves the second cylinder portion projection portion 23 of the cylinder portion 20 to be described later. Although it is possible to get over it, once it gets over it, it cannot get over the second cylindrical projecting portion 23 again along the push-up direction of the movable needle cover portion 10 and engages with the second cylindrical projecting portion 23 . configured to stop.
- the movable needle cover portion 10 further has third needle cover portion projecting portions 11a partially formed on the outer side surface 11 at predetermined intervals.
- the third needle cover projection 11a is located between the first needle cover projection 12 and the side lower end 16 and outside the movable needle cover 10, which will be described later. It can be arranged inside the biasing portion 40 provided so as to surround the side surface 11 . With this arrangement, it is possible to provide a minute clearance between the biasing portion 40 and the outer side surface 11 of the movable needle cover portion 10 (the main portion where the third needle cover portion projecting portion 11a is not provided). .
- the movable needle cover portion 10 is movable in one direction (push-down direction) and in the opposite direction (push-up direction). Specifically, as the movable needle cover portion 10 is moved in one direction (depressing direction), the compression coil spring as the biasing portion 40 is once contracted, and the once contracted compression coil spring is applied with an expanding force. By acting, it becomes possible to move the movable needle cover portion 10 in the opposite direction (push-up direction). That is, along with the movement of the movable needle cover portion 10, the biasing portion 40 contracts or expands. In this regard, the contact area between the movable needle cover portion 10 and the biasing portion 40 can be reduced as much as possible by providing the minute clearance. As a result, both the axial movement of the movable needle cover portion 10 and the contraction and extension behavior of the urging portion 40 can be performed smoothly.
- the cylindrical portion 20 is arranged on the needle support portion 30, specifically, on the base portion 31 of the needle support portion 30, and is configured so that a portion thereof can contact the movable needle cover portion 10. As shown in FIG.
- the tubular portion 20 has a substantially cylindrical shape and can be positioned in the inner region 17 of the movable needle cover portion 10 .
- an extending portion 32 of the needle support portion 30 with a hollow needle 60 is movable along the longitudinal direction (FIGS. 1B and 2). , see FIGS. 4A and 4B).
- a first tubular projecting portion 22 is provided on the outer side surface 21 of the tubular portion 20 .
- the first tubular projecting portion 22 is formed on the outer side surface of the tubular portion 20 so as to extend in a direction substantially perpendicular to the longitudinal direction (or the extending direction or the axial direction) of the tubular portion 20 . 21.
- the position of the first cylindrical projection 22 is adjusted so that it can come into contact with the lower end 16 of the side surface of the movable needle cover 10 that moves in the push-down direction during use.
- the first cylindrical projecting portion 22 extending in a direction substantially perpendicular to the longitudinal direction of the cylindrical portion 20 has a substantially circular shape when viewed in cross section or side view.
- the first tubular projecting portion 22 does not necessarily have a substantially circular shape in cross-sectional view or side view, and may have an inclined surface.
- at least one of the side lower end portion 16 of the movable needle cover portion 10 and the first tubular projection 22 of the tubular portion 20 should have an inclined surface.
- the cylindrical portion 20, which is the counterpart to which the movable needle cover portion 10 is rotated does not rotate axially. It is preferably supported on the upper surface of the base portion 31 .
- the movable needle cover portion 10 that is pushed down can be preferably rotated about its axis.
- the outer side surface 21 of the cylindrical portion 20 has a first outer side surface 21a having a relatively large thickness and a second outer side surface 21b having a relatively thinner thickness than the first outer side surface 21a.
- a first outer side surface 21a having a relatively thick thickness and a second outer side surface 21b having a relatively thin thickness are alternately arranged.
- the tubular portion 20 can further have the second tubular portion projecting portion 23 and the stepped portion 24 on the outer side surface 21 thereof at a predetermined interval.
- the former is located on the push-down direction side (i.e., the lower side) across the second outer side surface 21b, and the latter is located on the second outer side. It is positioned on the push-up direction side (that is, on the upper side) across the side surface 21b.
- the second cylindrical protrusion 23 is configured so that the second needle cover protrusion 19 can get over it when the movable needle cover 10 is moved in the pressing direction.
- the second needle cover projection 19 cannot get over the movable needle cover 10 again along the push-up direction of the movable needle cover 10, and is locked to the second cylindrical projection 23.
- the cylindrical portion 20 can be moved integrally with the movable needle cover portion 10 after axial rotation, and the cylindrical portion 20 can move from the opening of the movable needle cover portion 10. part protruding movement becomes possible.
- the tubular portion 20 is a colored member, it is possible to visually determine from the outside whether the hollow needle 60 has been used.
- the stepped portion 24 is positioned inside the movable needle cover portion 10 even if a force in the upward direction is applied to the movable needle cover portion 10 before the movable needle cover portion 10 is moved in the downward direction. It can be locked with the projection 19 of the second needle cover part. Further, the first needle cover projection 12 can be engaged with the upper surface 56 or the side surface 52 forming the opening 51 of the casing 50 .
- the cylindrical portion 20 further has a third cylindrical projection 26 at the lower end of the inner region 25 of the substantially cylindrical cylindrical portion 20 .
- the third cylindrical projection 26 is configured to engage with a first needle support projection 32a formed on the outer surface of an extension portion 32 of the needle support 30, which will be described later.
- the third tube projection 26 is configured to be coaxial with the first needle support projection 32a and located below the first needle support projection 32a. More specifically, the third tube protrusion 26 is arranged at a position such that the tube 20, which has partially protruded from the opening of the movable needle cover 10, cannot move further to the outside. .
- the region where the cylindrical portion 20 partially protrudes from the opening of the movable needle cover portion 10 can be made constant.
- the cylindrical portion 20 further has a slit 27 on its lower end side.
- flexibility can be provided to the lower end side of the tubular portion 20 .
- biasing portion 40 The urging portion 40 is configured to urge the movable needle cover portion 10 in the opposite direction (push-up direction) as the movable needle cover portion 10 moves in one direction (push-down direction). .
- biasing portion 40 is provided so as to surround outer side surface 11 of movable needle cover portion 10 .
- the biasing portion 40 has one end in contact with the upper surface 31 ⁇ of the base portion 31 of the needle support portion 30 and the other end in contact with the first needle cover portion projecting portion 12 of the movable needle cover portion 10 . It is arranged between the upper surface 31 ⁇ of the base portion 31 of the needle support portion 30 and the first needle cover portion projecting portion 12 so as to be in contact with each other.
- a compression coil spring can be used as the biasing portion 40 .
- a compression coil spring When a compression coil spring is used, it is positioned between the base portion 31 of the needle support portion 30 and the first needle cover portion projecting portion 12 as the movable needle cover portion 10 moves in one direction (depressing direction). The compression coil spring is contracted once. A force that attempts to expand acts on the compression coil spring that has contracted once, making it possible to move the movable needle cover portion 10 in the opposite direction (push-up direction).
- the needle support portion 30 supports a hollow needle 60 through which a liquid medicine can flow (see FIGS. 1B, 2, 5A and 5B).
- the needle support 30 comprises a base portion 31 and an extension portion 32 integrally formed with the base portion 31 .
- the base portion 31 of the needle support portion 30 has a space inside, and can accommodate the non-injection side end portion 60b of the needle 60 opposite to the drug solution injection side end portion 60a.
- Base portion 31 may also have a rib portion 31c on its outer surface that serves as a finger rest for removing pen injector 200 from needle assembly 100 after needle assembly 100 has been used.
- the inner surface of the base portion 31 of the needle support portion 30 can be mutually connected and held with the outer surface of the pen-type injector 200 .
- a screw connection method using a combination of male and female threads can be used.
- the base portion 31 can have any shape as long as the inner surface of the base portion 31 and the outer surface of the pen injector 200 can be held connected to each other.
- FIG. 1B and the like show a mode in which the base portion 31 has a flange portion on its lower end side. A part of the inner space into which the pen injector 200 is inserted may have substantially the same diameter as a whole.
- the flange portion of the base portion 31 is formed with the rib portion 31c.
- the rib portion may be formed at a predetermined location on the outer surface of the base portion corresponding to the location where the outer surface of the base portion is connected and held.
- the extending portion 32 of the needle support portion 30 is positioned so as to protrude from the upper surface of the base portion 31 .
- the extension portion 32 is slidable in the inner region 25 of the substantially cylindrical tubular portion 20 along the longitudinal direction.
- the width dimension of the extension portion 32 is preferably substantially the same as the width dimension of the inner region 25 of the substantially cylindrical tube portion 20 .
- the extension portion 32 has a first needle support projection 32a on its outer surface.
- the first needle support projection 32a is arranged coaxially with the projection 26 of the cylinder 20 and further than the third projection 26 so as to be engageable with the third projection 26 of the cylinder 20 . It is configured to be positioned above. With such a configuration, it is possible to prevent the cylinder portion 20 from being detached and to make the area of the cylinder portion 20 that partially protrudes from the opening of the movable needle cover portion 10 constant.
- the extension portion 32 has projections 32b arranged at predetermined intervals along its circumference in a plan view at the end on the base portion side (see FIG. 5B).
- the recesses 33 can be formed at predetermined intervals.
- the concave portion 33 and the third cylindrical protrusion 26 of the cylindrical portion 20 can be fitted to each other.
- the slit 27 is formed in the lower end side of the tubular portion 20 as described above, the lower end side of the tubular portion 20 can be provided with flexibility. This makes it easier for the first needle support projection 32a of the needle support 30 to pass through the slit 27 having flexibility. As a result, it is possible to smoothly install the tube portion 20 on the extension portion 32 of the needle support portion 30 .
- the extension part 32 can further have a second needle support projection 32c at the base part side end of the area where the recess 33 is formed.
- the second needle support protrusion 32c is located above the third tube protrusion 26 located at the lower end of the inner region 25 of the tube 20, and is located above the third tube protrusion 26. 3 is arranged so as to be able to come into contact with the cylindrical protruding portion 26 of No. 3 to some extent. Such a configuration can prevent the tubular portion 20 from easily coming off before the needle assembly 100 is started to be used.
- the base portion 31 can further comprise a bank portion 31a extending coaxially with the extension portion 32 from the contoured portion of its upper surface 31 ⁇ .
- one end of the biasing portion 40 is arranged to contact the upper surface 31 ⁇ of the base portion 31 of the needle support portion 30 .
- the biasing portion 40 it is preferable to dispose the biasing portion 40 inside the bank portion 31a.
- the bank portion 31a can function as a stopper for displacement of the biasing portion 40 in a direction substantially perpendicular to the contraction/extension direction (ie, lateral direction). Therefore, it is possible to suitably suppress the displacement of the urging portion 40 .
- One embodiment of the present disclosure is a state in which at least the movable needle cover portion 10, the barrel portion 20, the needle support portion 30, the biasing portion 40, and the casing 50 are integrally combined, and the following technical features are provided. (see FIGS. 1B and 2).
- movement of the movable needle cover portion 10 in one direction causes at least the movable needle cover portion 10 to abut against the tubular portion 20, thereby moving the movable needle cover portion 10 from a predetermined position before the movement to another position. so that the biasing member 40 can move the "rotated" movable needle cover 10 in the opposite direction.
- the movable needle cover portion 10 can be locked with the casing 50 “after the axial rotation in which the movement in the opposite direction is completed”.
- "at least" the movable needle cover 10 is axially rotated means that at least the movable needle cover is included as the axially rotated object, that is, the axially rotated object is one or more.
- the movable needle cover portion 10 when the needle assembly 100 is used, the movable needle cover portion 10 can be biased by the biasing portion 40 as the movable needle cover portion 10 moves in one direction (the push-down direction). . Therefore, the movable needle cover portion 10 that has moved in the one direction can move in the direction opposite to the one direction (push-up direction). As a result, it becomes possible to "automatically" house the drug solution injection side end 60a of the needle 60 once protruding outside from the movable needle cover part 10 inside the needle cover part 10 .
- the movable needle cover portion 10 and the casing 50 can be engaged with each other “after the shaft has been rotated to complete the movement in the opposite direction (push-up direction)”.
- Such locking makes it possible to prevent the movable needle cover portion 10 from moving again in one direction (the push-down direction) after completing the movement in the opposite direction.
- the used hollow needle 60 from protruding again from the movable needle cover part 10 .
- needle 60 can be displaced by simply utilizing biasing member 40 , axial rotation of movable needle cover portion 10 , and engagement of movable needle cover portion 10 with casing 50 .
- Automatic accommodation of the drug solution injection side end portion 60a and avoidance of re-projection of the used needle 60 are achieved. That is, by using the needle assembly 100 having a simple structure as a whole, it is possible to automatically accommodate the liquid medicine injection side end portion 60a of the needle 60 and prevent the used needle 60 from protruding again.
- An embodiment of the present disclosure has technical features in this respect as well.
- the needle assembly 100 preferably adopts the following aspects.
- the cylindrical portion 20 can move integrally with the movable needle cover portion 10 after being axially rotated.
- the movable needle cover section 10 can be moved in the opposite direction (push-up direction) after axial rotation.
- the cylindrical portion 20 can move integrally with the movable needle cover portion 10 after the axial rotation
- the cylindrical portion 20 as well as the movable needle cover portion 10 after the axial rotation move in the opposite direction (push-up direction). and can be moved.
- the movable needle cover portion 10 after the axial rotation in which the movement in the opposite direction (push-up direction) is completed is the movable needle cover portion 10 in which the movement in the opposite direction is completed.
- Re-movement in one direction (depressing direction) of the needle cover portion 10 is suppressed, so that the cylindrical portion 20, which moves integrally with the movable needle cover portion 10, is also prevented from re-moving in one direction (depressing direction). It can be suppressed.
- the cylindrical portion 20, which has been integrally moved in the opposite direction (push-up direction) together with the movable needle cover portion 10, is prevented from moving again in one direction (push-down direction). If the cylindrical portion 20 is configured to be able to protrude from the opening 51 of the casing 50 when the movement of the movable needle cover portion 10 in the push-up direction is completed, the protruding state can be fixed and maintained.
- the injection of the drug solution into the body using the hollow needle 60 has already been completed. That is, when the movement of the movable needle cover portion 10 in the opposite direction (push-up direction) is completed, the hollow needle 60 is in a used state.
- the cylindrical portion 20 fixed and maintained in a protruding state from the opening 51 of the casing 50 as a determination element for determining whether the hollow needle 60 has been used. can.
- the movable needle cover part 10 is transparent or semi-transparent and the tube part 20 is a colored marker part
- the colored tube part 20 projected and maintained from the opening 51 of the casing 50 can be attached to the movable needle cover. It can be visually recognized from the outside through the portion 10 . Therefore, it can be easily determined that the hollow needle 60 has been used.
- a medical worker or the like can visually recognize the cylindrical portion 20 functioning as a marker portion from the outside.
- the needle assembly can be determined as a used needle assembly and removed from the sample group of needle assemblies before the completion of drug solution administration.
- the cylindrical portion 20 not only functions to rotate the movable needle cover portion 10, but also functions to determine whether the hollow needle 60 has been used. can also function as a colored marker part of the That is, according to this aspect, when determining whether the hollow needle 60 has been used, it is not necessary to separately prepare, for example, a ring-shaped colored marker portion. An increase more than necessary can be suitably avoided.
- the axial rotation target can be the movable needle cover portion 10 alone.
- the case where the movable needle cover portion 10 alone is the object of axial rotation will be described as an example.
- such an aspect is merely an example, and an aspect in which not only the movable needle cover portion 10 but also the cylindrical portion 20 can be axially rotated can be adopted.
- FIG. 9A is a perspective view schematically showing the operation flow (before use) of the assembly according to one embodiment of the present disclosure.
- FIG. 9B is a cross-sectional view that schematically illustrates an operational flow (before use) of an assembly according to an embodiment of the present disclosure;
- the inner surface of the base portion 31 of the needle support portion 30 and the outer surface of the pen-type injector 200 are connected and held together, and the hollow portion is supported and fixed to the extension portion 32 of the needle support portion 30 . Insert the non-injection end 60b of the needle 60 into the pen injector 200 (see also FIG. 1B). This allows the needle assembly 100 according to an embodiment of the present disclosure to be attached to a pen-type injector with a liquid medicine inside.
- the integrally combined components (movable needle cover portion 10, cylinder portion 20, needle support portion 30 with hollow needle 60, biasing portion 40, and casing 50 ) is removed. After removal of the whole cover part 70 and before the one-way movement of the movable needle cover part 10 , there is a gap between the base part 31 of the needle support part 30 and the first needle cover part projection 12 of the movable needle cover part 10 .
- the movable needle cover portion 10 is urged in the opposite direction (push-up direction) by the arranged urging portion 40 .
- the biasing portion 40 prevents the movable needle cover portion 10 from protruding the drug solution injection side end portion 60a of the hollow needle 60 to the outside. is biased to be positioned at As a result, after the whole cover part 70 is removed and before the movable needle cover part 10 is moved in one direction, the end part 60a of the hollow needle 60 on the liquid medicine injection side can be maintained in a non-projecting state to the outside.
- the stepped portion 24 of the cylindrical portion 20 and the second needle cover portion projecting portion 19 positioned on the inner side surface 18 of the movable needle cover portion 10 are separated from each other. Locking is possible. Further, the first needle cover protrusion 12 of the movable needle cover 10 can be engaged with the upper surface 56 or the side surface 52 forming the opening 51 of the casing 50 . Accordingly, it is possible to preferably prevent the movable needle cover portion 10 from being removed from the casing 50 when the needle assembly 100 is not in use (corresponding to before the movable needle cover portion 10 moves in one direction).
- the movable needle cover part 10 which is prevented from being detached from the casing 50, is urged to be positioned at a position where the hollow needle 60 is not protruded to the outside.
- the movable needle cover portion 10 moves in one direction (equivalent to before the start of puncture)
- the movable needle cover portion 10 is detached and/or moved in the push-down direction so that the hollow needle can be opened. It is possible to suitably prevent the 60 from being exposed to the outside and accidentally stabbing a medical worker or the like.
- one-way (corresponding to depressing direction) movement of the movable needle cover part 10 is started by the medical staff or the patient.
- the movable needle cover portion 10, the tube portion 20, and the biasing portion 40 perform the following operations (see FIGS. 10A and 10B).
- the movable needle cover 10 in a state in which the movable needle cover 10 is pressed against the skin of the patient or the like so that the drug solution injection side end 60a of the hollow needle 60 can protrude from the movable needle cover 10 to the outside.
- One-way movement of the movable needle cover part 10 is initiated.
- the casing 50 is pushed toward the patient's skin while the movable needle cover 10 is pressed against the patient's skin. Start unidirectional movement.
- the locked portion 53 of the casing 50 does not lock with the first needle cover projection 12 of the movable needle cover 10 before the downward movement (corresponding to the one-way movement). positioned in place. That is, before the movable needle cover portion 10 is pushed down, the locked portion 53 of the casing 50 and the first needle cover portion projecting portion 12 of the movable needle cover portion 10 are not opposed to each other, and are coaxial. It has a positional relationship that is not above and/or a positional relationship that is not in the same row. Because of this positional relationship, the first needle cover projection 12 of the movable needle cover 10 is positioned in the casing 50 before the movable needle cover 10 is pushed down (equivalent to one-way movement). , the movable needle cover 10 can be smoothly moved in one direction.
- the urging portion 40 has one end in contact with the upper surface of the base portion 31 of the needle support portion 30 and the other end connected to the first needle cover portion projecting portion 12 of the movable needle cover portion 10 . is arranged between the base portion 31 of the needle support portion 30 and the first needle cover portion projecting portion 12 so as to be in contact with the needle support portion 30 .
- a compression coil spring is used as the urging portion 40, the base portion 31 of the needle support portion 30 and the first needle cover portion projecting portion are pushed together as the movable needle cover portion 10 starts to move in one direction (depressing direction). 12 will start to contract.
- the movable needle cover part 10 After the start of the unidirectional movement of the movable needle cover part 10, during the movement, the movable needle cover part 10, the cylinder part 20, and the biasing part 40 perform the following operations. (see FIGS. 10A-12B).
- the side lower end portion 16 of the movable needle cover portion 10 is aligned with the first cylindrical portion of the cylindrical portion 20 . It abuts on the projecting portion 22 . Since at least one of the side lower end 16 of the movable needle cover 10 and the first tube projecting portion 22 of the tube 20 has an inclined surface, While the movable needle cover part 10 moves in one direction (the push-down direction), an axial rotation force can be applied to the cover part 10 .
- the movable needle cover portion 10 that is pushed down can start rotating about the cylinder portion 20 .
- the movable needle cover portion 10 is the only object to be axially rotated, in order to appropriately apply the axial rotation force to the movable needle cover portion 10, the other member to be abutted when the movable needle cover portion 10 is axially rotated is
- One barrel 20 is preferably held on the upper surface of the base portion 31 of the needle support 30 without pivoting.
- the biasing part is located between the base part 31 of the needle support part 30 and the first needle cover part projecting part 12 compared to the one-way movement start stage.
- a compression coil spring as 40 is further contracted.
- the movable needle cover portion 10 has a configuration in which the notch portion 15 is continuous with the lower end portion 16 of the side surface that can abut against the first tubular portion projecting portion 22 .
- the movable needle cover portion 10 that has started to rotate about the axis can be " From the state in which the inclined surface 13 and the first cylindrical protrusion 22 directly face each other when they are in contact with each other, to the state in which the notch 15 and the first cylindrical protrusion 22 are positioned substantially coaxially. It will move.
- FIGS. 12A and 12B When the transition to such a state is completed, that is, when "the notch 15 and the first cylindrical protruding portion 22 are positioned substantially coaxially", the main body of the present invention is shown in FIGS. 12A and 12B. In one disclosed embodiment, axial rotation of the movable needle cover portion 10 is completed.
- the timing at which the axial rotation of the movable needle cover portion 10 is completed is earlier than the timing at which the hollow needle 60 emerges from the opening of the movable needle cover portion 10. preferably.
- the urging section 40 is already prepared to move the movable needle cover section 10 in the upward direction. Therefore, it is possible to prevent the liquid injection side end 60 a of the hollow needle 60 from protruding outside the movable needle cover portion 10 .
- the notch portion 15 and the first cylindrical projecting portion 22 are positioned substantially coaxially after the shaft rotation (which can be referred to as after the shaft rotation is completed). Therefore, the movable needle cover portion 10 can be further pushed down in one direction without coming into contact with the first tubular projection 22 again.
- the side lower end part 16 of the movable needle cover part 10 can finally come into contact with the upper surface of the base part 31 of the needle support part 30 .
- the drug solution injection side end 60a of the hollow needle 60 attached to the needle support 30 can be preferably protruded outside the movable needle cover 10. It's becoming
- the needle assembly 100 is used with the movable needle cover portion 10 pressed against the patient's skin.
- the hollow needle 60 including the drug solution injection side end 60a can be punctured into the patient's body through the skin.
- the drug solution is administered into the body of the patient or the like through the hollow needle 60 from a pen-type injector containing the drug solution.
- Opposite direction movement start of the movable needle cover part 10 (after completion of drug solution administration)
- the puncture state of the hollow needle 60 to the patient's skin is released, and the movable needle cover part 10 is separated from the skin.
- the movable needle cover portion 10 is urged in the opposite direction (push-up direction) by the force acting on the urging portion 40 to expand, thereby pushing the movable needle cover portion 10 in the opposite direction (push-up direction). upward direction).
- the liquid injection side end 60a of the needle 60 once protruding outside from the movable needle cover portion 10 is "automatically" housed inside the movable needle cover portion 10. It becomes possible to
- the shape of the first needle cover projection 12 is such that it does not engage with the engaged portion 53 of the casing 50 when the movable needle cover 10 moves in the push-up direction (opposite direction). It has a shape that allows it to get over the locking portion 53 . Therefore, the movable needle cover portion 10 can be smoothly moved in the push-up direction while the engagement between the first needle cover projection 12 and the engaged portion 53 of the casing 50 is avoided.
- the movable needle cover portion 10 When the movable needle cover portion 10 moves further in the push-up direction, the first needle cover portion projecting portion 12 climbs over the locked portion 53 of the casing 50 .
- the movable needle cover portion 10 is configured so that the first needle cover portion projecting portion 12 can be engaged with the engaged portion 53 of the casing 50 when it moves in the pressing direction (one direction). .
- the locking of the first needle cover projecting portion 12 and the locked portion 53 can suitably suppress the re-movement of the movable needle cover 10 in the push-down direction (one direction).
- the locked portion 53 may correspond to the lower edge of the contoured portion forming the second opening 55 formed in the side surface of the casing 50 .
- a portion of the first needle cover protrusion 12 protrudes outward through the second opening 55, and then a portion of the first needle cover protrusion 12 protruding is the locked portion 53. (corresponding to the lower edge of the contoured portion forming the second opening 55).
- a slit 54 is formed along the longitudinal direction of the side surface 52 from both ends of the locked portion 53 (corresponding to the lower edge of the contoured portion forming the second opening 55), the locked portion 53 flexibility.
- the part of the first needle cover projection 12 that protrudes outward through the second opening 55 can be smoothly locked to the locked portion 53 . can be done.
- the first needle cover projection 12 pushes the locked portion 53 of the casing 50 when the movable needle cover 10 moves further in the push-up direction. It is also advantageous in that it becomes easier to overcome.
- the second needle cover projection 19 positioned inside the movable needle cover 10 can engage with the stepped portion 24 formed on the outer side surface 21 of the tubular portion 20 .
- the first needle cover protrusion 12 of the movable needle cover 10 can be engaged with the upper surface 56 or the side surface 52 forming the opening 51 of the casing 50 .
- the cylindrical portion 20 can also move in the opposite direction (push-up direction).
- the second needle cover projection 19 is engaged with the second cylinder projection 23 of the cylinder 20 when the movable needle cover 10 moves in the push-up direction. It can be realized by being Furthermore, as described above, since the movable needle cover portion 10, which has been moved in the opposite direction, is prevented from moving again in one direction (depressing direction), it moves together with the movable needle cover portion 10. The cylindrical portion 20 can also be restrained from re-moving in one direction (depressing direction).
- the movable needle cover part 10 is transparent or semi-transparent and the tube part 20 is a colored marker part
- the colored tube part 20 projected and maintained from the opening 51 of the casing 50 can be attached to the movable needle cover. It can be visually recognized from the outside through the portion 10 . Therefore, it can be easily determined that the hollow needle 60 has been used.
- a needle support supporting a hollow needle through which a liquid medicine can flow each constructed so that at least a part of it can be housed in a casing having an opening; a movable needle cover that is movable within the opening so that the end of the needle on the injection side of the drug solution protrudes outward during use; a cylindrical portion disposed on the needle support portion and partially contactable with the movable needle cover portion; an urging portion configured to urge the movable needle cover portion in a direction opposite to the one direction as the movable needle cover portion moves in the one direction; The movement of the movable needle cover portion in the one direction causes at least the movable needle cover portion to come into contact with the barrel portion, thereby pivoting from a predetermined position before movement to another position, thereby causing the attachment.
- the movable needle cover portion after axial rotation is movable in the opposite direction by the force portion, and the movable needle cover portion after the axial rotation that has completed the movement in the opposite direction is moved to the above direction.
- Second aspect The needle assembly according to the first aspect, wherein the tubular portion is integrally movable with the movable needle cover portion after the axial rotation.
- Third aspect In the second aspect, when the movement of the movable needle cover section in the opposite direction is completed, a part of the cylindrical section movable integrally with the movable needle cover section can protrude from at least the opening of the casing. and the needle assembly.
- the movable needle cover portion is transparent or translucent, and the cylindrical portion is a colored marker portion for determining whether the needle has been used. , needle assembly.
- the movable needle cover portion has a substantially cylindrical shape, and a first tubular projecting portion is provided in an inner region of the cylindrical movable needle cover portion. on the outer side surface is positioned, At least one of the lower end of the side surface of the movable needle cover portion and the first cylindrical projection portion has an inclined surface capable of coming into contact with each other.
- a needle assembly wherein said side lower end of said movable needle cover portion abuts against said first tubular projection, thereby allowing axial rotation of said movable needle cover portion.
- Sixth aspect In the needle assembly according to the fifth aspect, only the lower end portion of the side surface of the movable needle cover portion has the inclined surface, and the first tubular projecting portion has a substantially circular shape in cross-sectional or side view.
- the movable needle cover portion has a notch portion continuous with the lower end portion of the side surface that abuts on the first tubular portion projecting portion, The needle assembly, wherein the cutout portion and the first cylindrical portion projecting portion can be positioned substantially coaxially after the movable needle cover portion rotates about the axis.
- the notch allows the movable needle cover portion after the shaft rotation to be further pushed down in the one direction without abutting against the first tubular projecting portion. and the needle assembly.
- the movable needle cover portion has a first needle cover projection portion locally formed on the outer side surface, and the needle support portion and the A needle assembly, wherein the biasing portion is positioned between a first needle cover projection.
- the movable needle cover section after the axial rotation which has been pushed down in the one direction by the biasing section via the first needle cover section projecting portion, A needle assembly movable in said opposite direction.
- the first needle cover projection of the movable needle cover after the axial rotation can be locked to a locked portion formed on the side surface of the casing. and the needle assembly.
- Twelfth aspect The needle assembly according to any one of the ninth to eleventh aspects, wherein the first needle cover projection has a wing shape.
- the cylindrical portion further has a second cylindrical portion projecting portion different from the first cylindrical portion projecting portion on the outer side surface, and the movable The needle cover part further has a second needle cover part projecting part on the inner side surface, and when the movable needle cover part after the axial rotation moves in the opposite direction, the second needle A needle assembly, wherein a cover projection is engageable with the second tubular projection.
- the needle support has a base portion, and the base portion is the non-injection side opposite to the injection side end of the drug solution of the needle.
- a needle assembly having an end that can be housed therein.
- the needle support further comprises an extension portion having therein the needle fixedly supported on the base portion, and the extension portion of the needle support is the movable mold. A needle assembly movable within the needle cover portion.
- a needle assembly according to an embodiment of the present disclosure can be used by being replaceably attached to a pen-type injector having a liquid medicine inside.
- Pen-type injector with chemical solution inside 100 needle assembly 70 whole cover part 60 hollow needle 60a injection end of needle 60b non-injection end of needle 50 casing 51 opening (first opening) 52 side surface 52a inner side surface of casing 52b outer side surface of casing 53 engaged portion 53a tip side of engaged portion 53b central region of engaged portion 54 slit 55 second opening 56 upper surface 57 slope surface 58 rib portion 40 biasing part 30 Needle support part 31 Base part 31 ⁇ Upper surface of base part 31a Bank part 31b Locking part that can be locked to the locked part (casing side opening) of casing 31c Rib part 32 Extension part 32a First needle support part projection Part 32b Protruding part 32c Second needle supporting part protruding part 33 Recessed part 20 cylindrical portion 21 outer side surface 21a first outer side surface 21b second outer side surface 22 first cylindrical protrusion 23 second cylindrical protrusion 24 step portion 25 inner region 26 third cylindrical protrusion Portion 27 Slit 10 Movable needle cover portion 11 Outer side surface 11a Third needle cover projection 12 First needle cover projection 12
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Abstract
Description
開口部を有して成るケーシング内に少なくとも一部が収容可能にそれぞれ構成された、
薬液が流動可能な中空状の針が支持された針支持部と、
使用時に前記針の前記薬液の注入側端部を外側に突出させるように前記開口部内を移動可能な可動型針カバー部と、
前記針支持部上に配置され、かつ前記可動型針カバー部と一部が当接可能な筒部と、
前記可動型針カバー部の一方向移動に伴い該可動型針カバー部が該一方向とは反対方向に付勢されるように構成された付勢部と
を有して成り、
前記可動型針カバー部の前記一方向への移動により、少なくとも該可動型針カバー部が前記筒部に当接することで移動前における所定位置から他の位置へと軸回転され、それによって前記付勢部により軸回転後の前記可動型針カバー部が前記反対方向へと移動可能となっており、および
前記反対方向への移動が完了した前記軸回転した後の前記可動型針カバー部が前記ケーシングと係止可能となっている、針アッセンブリが提供される。
ケーシング50は、可動型針カバー部10、筒部20、中空状の針60付き針支持部30、および付勢部40の各々の少なくとも一部を内部に収容可能に構成されている(図1B、図2、図7A~図7C参照)。ケーシング50は、可動型針カバー部10が内部を通過移動可能な開口部51を有して成る。ケーシング50は例えば略円筒形状を有する場合、当該開口部51はケーシング50の上面56側に形成することができる。
可動型針カバー部10は、未使用時に針支持部30に支持されかつ薬液が流動可能な中空状の針60をカバーし、使用時に中空状の針60の薬液の注入側端部60aを外側に突出させるようにケーシング50の開口部51を一方向に通過移動可能となっている(図1A~図3参照)。
筒部20は、針支持部30上に、具体的には針支持部30のベース部分31上に配置され、かつ可動型針カバー部10とその一部が当接可能に構成されている。筒部20は、略円筒状を有し、上記可動型針カバー部10の内側領域17に位置づけ可能となっている。又、略円筒状の筒部20の内側領域25には、中空状の針60付きの針支持部30の延在部分32が長手方向に沿って移動可能となっている(図1B、図2、図4Aおよび図4B参照)。
付勢部40は、可動型針カバー部10の一方向(押下げ方向)への移動に伴い可動型針カバー部10が反対方向(押上げ方向)に付勢されるように構成されている。具体的には、付勢部40は、可動型針カバー部10の外側側面11を囲むように設けられている。これに加えて、付勢部40は、その一端が針支持部30のベース部分31の上面31αと接する一方、その他端が可動型針カバー部10の第1の針カバー部突状部12と接するように、針支持部30のベース部分31の上面31αと第1の針カバー部突状部12との間に配置されている。
針支持部30は、薬液が流動可能な中空状の針60が支持されたものである(図1B、図2、図5Aおよび図5B参照)。針支持部30は、ベース部分31および当該ベース部分31と一体的に構成された延在部分32を有して成る。針支持部30のベース部分31は、内部に空間領域を有し、針60の薬液注入側端部60aとは反対側の非注入側端部60bを収容可能となっている。又、ベース部分31は、針アッセンブリ100の使用後に針アッセンブリ100からペン型注入器200を取り外す際の指がかり部分として機能する、リブ部分31cをその外側面に有し得る。
全体カバー部70については、ペン型注入器200への針アッセンブリ100の一体的に組み合わされた構成要素(可動型針カバー部10、筒部20、中空針60付き針支持部30、付勢部40、およびケーシング50)の取付け前にて、これら構成要素を収容できるものであればよい(図8参照)。なお、安全面および衛生面の観点から、針アッセンブリ100の使用前にて、全体カバー部70は、上記一体的に組み合わされた構成要素を内部に収容するための開口部がシールされていることが好ましい。
本開示の一実施形態は、少なくとも上記の可動型針カバー部10、筒部20、針支持部30、付勢部40、およびケーシング50が一体的に組み合わされた状態で、以下の技術的特徴を有する(図1Bおよび図2参照)。
まず、本開示の一実施形態に係る針アッセンブリ100を、薬液を内部に備えるペン型注入器に取り付ける(図9Aおよび図9B参照)。
次に、医療従事者又は患者により可動型針カバー部10の一方向(押下げ方向に相当)移動を開始する。その移動開始段階では可動型針カバー部10、筒部20、および付勢部40は以下の動作をする(図10Aおよび図10B参照)。
可動型針カバー部10の一方向移動開始後その移動途中段階では、可動型針カバー部10、筒部20、および付勢部40は以下の動作をする(図10A~図12B参照)。
上記軸回転後(軸回転完了後と称し得る)においては、切欠き部15と第1の筒部突状部22と略同軸上に位置する関係であるため、可動型針カバー部10は第1の筒部突状部22に再び当接することなく一方向へと更に押下げ移動が可能となる。
可動型針カバー部10の一方向移動が完了すると、体内への薬液投与を実施する(図13Aおよび図13B参照)。
所定量の薬液の投与が完了すると、患者等の皮膚への中空状の針60の穿刺状態を解放して、同皮膚から可動型針カバー部10を離す。
患者等の皮膚から可動型針カバー部10を離す前段階では、上述のように付勢部40としての圧縮コイルバネが収縮された状態となっている。付勢部40が収縮状態であることにより、可動型針カバー部10は付勢部40により付勢可能となっている。そして、患者等の皮膚から可動型針カバー部10を離すと、一旦収縮した付勢部40としての圧縮コイルバネに伸張しようとする力が作用する。又、針支持部30のベース部分31は保持された状態、すなわち移動しない状態となっている。
可動型針カバー部10が押上げ方向に更に移動すると、第1の針カバー部突状部12がケーシング50の被係止部分53を乗り越えることとなる。上述のように、可動型針カバー部10は、押下げ方向(一方向)移動時には第1の針カバー部突状部12がケーシング50の被係止部分53と係止可能に構成されている。
上述のように、可動型針カバー部10の内側に位置する第2の針カバー部突状部19は、筒部20の外側側面21に形成された段差部分24と係止可能となっている(図3、図4Aおよび図4B併せて参照)。更に、可動型針カバー部10の第1の針カバー部突状部12はケーシング50の開口部51を形作る上面56又は側面52と係止可能となっている。
上記にて既に述べているため内容の重複を避けるため簡略化して記載するが、上記筒部20が軸回転した後の可動型針カバー部10と一体移動可能な構成であれば、軸回転後の可動型針カバー部10に加え筒部20も反対方向(押上げ方向)へと移動可能となる。
第1態様:
開口部を有して成るケーシング内に少なくとも一部が収容可能にそれぞれ構成された、 薬液が流動可能な中空状の針が支持された針支持部と、
使用時に前記針の前記薬液の注入側端部を外側に突出させるように前記開口部内を移動可能な可動型針カバー部と、
前記針支持部上に配置され、かつ前記可動型針カバー部と一部が当接可能な筒部と、
前記可動型針カバー部の前記一方向移動に伴い該可動型針カバー部が該一方向とは反対方向に付勢されるように構成された付勢部と
を有して成り、
前記可動型針カバー部の前記一方向への移動により、少なくとも該可動型針カバー部が前記筒部に当接することで移動前における所定位置から他の位置へと軸回転され、それによって前記付勢部により軸回転後の前記可動型針カバー部が前記反対方向へと移動可能となっており、および
前記反対方向への移動が完了した前記軸回転した後の前記可動型針カバー部が前記ケーシングと係止可能となっている、針アッセンブリ。
第2態様:
上記第1態様において、前記筒部が、前記軸回転した後の前記可動型針カバー部と一体移動可能となっている、針アッセンブリ。
第3態様:
上記第2態様において、前記反対方向への前記可動型針カバー部の移動完了時に、該可動型針カバー部と一体移動可能な前記筒部の一部が少なくとも前記ケーシングの前記開口部から突出可能となっている、針アッセンブリ。
第4態様:
上記第1態様~第3態様のいずれかにおいて、前記可動型針カバー部が透明又は半透明である一方、前記筒部が前記針を使用済みであるかを判別するための色付きマーカー部である、針アッセンブリ。
第5態様:
上記第1態様~第4態様のいずれかにおいて、前記可動型針カバー部は略円筒状を有し、該円筒状の該可動型針カバー部の内側領域に、第1の筒部突状部を外側側面に有して成る前記筒部が位置づけられ、
前記可動型針カバー部の側面下端部および前記第1の筒部突状部の少なくとも一方が互いに当接可能な傾斜面を有しており、前記可動型針カバー部の前記一方向移動に伴い、該可動型針カバー部の前記側面下端部が前記第1の筒部突状部に当接し、それによって前記可動型針カバー部の軸回転が可能となっている、針アッセンブリ。
第6態様:
上記第5態様において、前記可動型針カバー部の側面下端部のみが前記傾斜面を有し、前記第1の筒部突状部は断面視又は側面視で略円形状を有する、針アッセンブリ。
第7態様:
上記第5態様又は第6態様において、 前記可動型針カバー部が、前記第1の筒部突状部に当接する前記側面下端部に連続する切欠き部を有して成り、
前記可動型針カバー部の前記軸回転した後において、前記切欠き部と前記第1の筒部突状部とが略同軸上に位置づけ可能となっている、針アッセンブリ。
第8態様:
上記第7態様において、前記切欠き部により、前記軸回転後の前記可動型針カバー部が前記第1の筒部突状部に当接することなく前記一方向へと更なる押下げ移動が可能となっている、針アッセンブリ。
第9態様:
上記第1態様~第8態様のいずれかにおいて、前記可動型針カバー部が外側側面に局所的に形成された第1の針カバー部突状部を有して成り、前記針支持部と前記第1の針カバー部突状部との間に前記付勢部が配置されている、針アッセンブリ。
第10態様:
上記第9態様において、前記付勢部により、前記第1の針カバー部突状部を介して、前記一方向への押下げ移動がなされた前記軸回転後の前記可動型針カバー部が、前記反対方向へと移動可能となっている、針アッセンブリ。
第11態様:
上記第9態様又は第第10態様において、前記軸回転後の前記可動型針カバー部の前記第1の針カバー部突状部が前記ケーシングの側面に形成された被係止部分に係止可能となっている、針アッセンブリ。
第12態様:
上記第9態様~第11態様のいずれかにおいて、前記第1の針カバー部突状部がウィング状となっている、針アッセンブリ。
第13態様:
上記第5態様~第12態様のいずれかにおいて、前記筒部が前記外側側面に前記第1の筒部突状部とは異なる第2の筒部突状部を更に有して成り、前記可動型針カバー部が内側側面に第2の針カバー部突状部を更に有して成り、前記軸回転後の前記可動型針カバー部が前記反対方向に移動する際に、前記第2の針カバー部突状部が前記第2の筒部突状部に係止可能となっている、針アッセンブリ。
第14態様:
上記第1態様~第13態様のいずれかにおいて、前記薬液を内部に備えるペン型注入器に取り換え可能に取り付けられる、針アッセンブリ。
第15態様:
上記第1態様~第14態様のいずれかにおいて、前記針支持部がベース部分を有して成り、前記ベース部分が、前記針の前記薬液の前記注入側端部とは反対側の非注入側端部を内部に収容可能となっている、針アッセンブリ。
第16態様:
上記第15態様において、前記針支持部は、前記ベース部分上に固定支持された前記針を内部に有する延在部分を更に有して成り、前記針支持部の前記延在部分が前記可動型針カバー部の内部を移動可能となっている、針アッセンブリ。
100 針アッセンブリ
70 全体カバー部
60 中空状の針
60a 針の注入側端部
60b 針の非注入側端部
50 ケーシング
51 開口部(第1の開口部)
52 側面
52a ケーシングの内側側面
52b ケーシングの外側側面
53 被係止部分
53a 被係止部分の先端側
53b 被係止部分の中央領域
54 スリット
55 第2の開口部
56 上面
57 スロープ面
58 リブ部分
40 付勢部
30 針支持部
31 ベース部分
31α ベース部分の上面
31a 土手部分
31b ケーシングの被係止部分(ケーシング側面開口部)と係止可能な係止部分
31c リブ部分
32 延在部分
32a 第1針支持部突起部
32b 凸部
32c 第2針支持部突起部
33 凹部
20 筒部
21 外側側面
21a 第1の外側側面
21b 第2の外側側面
22 第1の筒部突状部
23 第2の筒部突状部
24 段差部分
25 内側領域
26 第3の筒部突状部
27 スリット
10 可動型針カバー部
11 外側側面
11a 第3の針カバー部突状部
12 第1の針カバー部突状部
12a 針カバー部突状部の一端
12b 針カバー部突状部の他端
13 傾斜面
14 凹部形状の側面下端部の一部
15 切欠き部
16 側面下端部
17 内側領域
18 内側側面
19 第2の針カバー部突状部
Claims (16)
- 開口部を有して成るケーシング内に少なくとも一部が収容可能にそれぞれ構成された、
薬液が流動可能な中空状の針が支持された針支持部と、
使用時に前記針の前記薬液の注入側端部を外側に突出させるように前記開口部内を移動可能な可動型針カバー部と、
前記針支持部上に配置され、かつ前記可動型針カバー部と一部が当接可能な筒部と、
前記可動型針カバー部の一方向移動に伴い該可動型針カバー部が該一方向とは反対方向に付勢されるように構成された付勢部と
を有して成り、
前記可動型針カバー部の前記一方向への移動により、少なくとも該可動型針カバー部が前記筒部に当接することで移動前における所定位置から他の位置へと軸回転され、それによって前記付勢部により軸回転後の前記可動型針カバー部が前記反対方向へと移動可能となっており、および
前記反対方向への移動が完了した前記軸回転した後の前記可動型針カバー部が前記ケーシングと係止可能となっている、針アッセンブリ。 - 前記筒部が、前記軸回転した後の前記可動型針カバー部と一体移動可能となっている、請求項1に記載の針アッセンブリ。
- 前記反対方向への前記可動型針カバー部の移動完了時に、該可動型針カバー部と一体移動可能な前記筒部の一部が少なくとも前記ケーシングの前記開口部から突出可能となっている、請求項2に記載の針アッセンブリ。
- 前記可動型針カバー部が透明又は半透明である一方、前記筒部が前記針を使用済みであるかを判別するための色付きマーカー部である、請求項1~3のいずれかに記載の針アッセンブリ。
- 前記可動型針カバー部は略円筒状を有し、該円筒状の該可動型針カバー部の内側領域に、第1の筒部突状部を外側側面に有して成る前記筒部が位置づけられ、
前記可動型針カバー部の側面下端部および前記第1の筒部突状部の少なくとも一方が互いに当接可能な傾斜面を有しており、前記可動型針カバー部の前記一方向移動に伴い、該可動型針カバー部の前記側面下端部が前記第1の筒部突状部に当接し、それによって前記可動型針カバー部の軸回転が可能となっている、請求項1~4のいずれかに記載の針アッセンブリ。 - 前記可動型針カバー部の側面下端部のみが前記傾斜面を有し、前記第1の筒部突状部は断面視又は側面視で略円形状を有する、請求項5に記載の針アッセンブリ。
- 前記可動型針カバー部が、前記第1の筒部突状部に当接する前記側面下端部に連続する切欠き部を有して成り、
前記可動型針カバー部の前記軸回転した後において、前記切欠き部と前記第1の筒部突状部とが略同軸上に位置づけ可能となっている、請求項5又は6に記載の針アッセンブリ。 - 前記切欠き部により、前記軸回転後の前記可動型針カバー部が前記第1の筒部突状部に当接することなく前記一方向へと更なる押下げ移動が可能となっている、請求項7に記載の針アッセンブリ。
- 前記可動型針カバー部が外側側面に局所的に形成された第1の針カバー部突状部を有して成り、前記針支持部と前記第1の針カバー部突状部との間に前記付勢部が配置されている、請求項1~8のいずれかに記載の針アッセンブリ。
- 前記付勢部により、前記第1の針カバー部突状部を介して、前記一方向への押下げ移動がなされた前記軸回転後の前記可動型針カバー部が、前記反対方向へと移動可能となっている、請求項9に記載の針アッセンブリ。
- 前記軸回転後の前記可動型針カバー部の前記第1の針カバー部突状部が前記ケーシングの側面に形成された被係止部分に係止可能となっている、請求項9又は10に記載の針アッセンブリ。
- 前記第1の針カバー部突状部がウィング状となっている、請求項9~11のいずれかに記載の針アッセンブリ。
- 前記筒部が前記外側側面に前記第1の筒部突状部とは異なる第2の筒部突状部を更に有して成り、前記可動型針カバー部が内側側面に第2の針カバー部突状部を更に有して成り、前記軸回転後の前記可動型針カバー部が前記反対方向に移動する際に、前記第2の針カバー部突状部が前記第2の筒部突状部に係止可能となっている、請求項5~12のいずれかに記載の針アッセンブリ。
- 前記薬液を内部に備えるペン型注入器に取り換え可能に取り付けられる、請求項1~13のいずれかに記載の針アッセンブリ。
- 前記針支持部がベース部分を有して成り、前記ベース部分が、前記針の前記薬液の前記注入側端部とは反対側の非注入側端部を内部に収容可能となっている、請求項1~14のいずれかに記載の針アッセンブリ。
- 前記針支持部は、前記ベース部分上に固定支持された前記針を内部に有する延在部分を更に有して成り、前記針支持部の前記延在部分が前記可動型針カバー部の内部を移動可能となっている、請求項15に記載の針アッセンブリ。
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KR1020237037218A KR20240081443A (ko) | 2021-03-31 | 2022-03-30 | 니들 어셈블리 |
CN202280026433.7A CN117120127A (zh) | 2021-03-31 | 2022-03-30 | 针组件 |
JP2023511522A JPWO2022210964A1 (ja) | 2021-03-31 | 2022-03-30 | |
US18/553,219 US20240181172A1 (en) | 2021-03-31 | 2022-03-30 | Needle assembly |
EP22781174.2A EP4316553A1 (en) | 2021-03-31 | 2022-03-30 | Needle assembly |
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JP2021-061217 | 2021-03-31 | ||
JP2021061217 | 2021-03-31 |
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WO2022210964A1 true WO2022210964A1 (ja) | 2022-10-06 |
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PCT/JP2022/016267 WO2022210964A1 (ja) | 2021-03-31 | 2022-03-30 | 針アッセンブリ |
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US (1) | US20240181172A1 (ja) |
EP (1) | EP4316553A1 (ja) |
JP (1) | JPWO2022210964A1 (ja) |
KR (1) | KR20240081443A (ja) |
CN (1) | CN117120127A (ja) |
WO (1) | WO2022210964A1 (ja) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030120209A1 (en) * | 2001-11-30 | 2003-06-26 | Karsten Jensen | Safety needle assembly |
JP2003534105A (ja) * | 2000-05-31 | 2003-11-18 | ノボ ノルディスク アクティーゼルスカブ | 使い捨て可能で両端が尖った注射針並びにこの使い捨て可能で両端が尖った注射針を有するインシュリン注射システム |
JP4738422B2 (ja) | 2005-02-18 | 2011-08-03 | ベクトン・ディキンソン・アンド・カンパニー | 注射器用安全シールドシステム |
JP2021061217A (ja) | 2019-10-09 | 2021-04-15 | 富士通クライアントコンピューティング株式会社 | 電気接続装置 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4738422Y1 (ja) | 1968-10-09 | 1972-11-21 |
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2022
- 2022-03-30 US US18/553,219 patent/US20240181172A1/en active Pending
- 2022-03-30 EP EP22781174.2A patent/EP4316553A1/en active Pending
- 2022-03-30 CN CN202280026433.7A patent/CN117120127A/zh active Pending
- 2022-03-30 JP JP2023511522A patent/JPWO2022210964A1/ja active Pending
- 2022-03-30 KR KR1020237037218A patent/KR20240081443A/ko unknown
- 2022-03-30 WO PCT/JP2022/016267 patent/WO2022210964A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003534105A (ja) * | 2000-05-31 | 2003-11-18 | ノボ ノルディスク アクティーゼルスカブ | 使い捨て可能で両端が尖った注射針並びにこの使い捨て可能で両端が尖った注射針を有するインシュリン注射システム |
US20030120209A1 (en) * | 2001-11-30 | 2003-06-26 | Karsten Jensen | Safety needle assembly |
JP4738422B2 (ja) | 2005-02-18 | 2011-08-03 | ベクトン・ディキンソン・アンド・カンパニー | 注射器用安全シールドシステム |
JP2021061217A (ja) | 2019-10-09 | 2021-04-15 | 富士通クライアントコンピューティング株式会社 | 電気接続装置 |
Also Published As
Publication number | Publication date |
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KR20240081443A (ko) | 2024-06-07 |
US20240181172A1 (en) | 2024-06-06 |
EP4316553A1 (en) | 2024-02-07 |
JPWO2022210964A1 (ja) | 2022-10-06 |
CN117120127A (zh) | 2023-11-24 |
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