WO2023272716A1 - 自动注射器及其致动组件 - Google Patents

自动注射器及其致动组件 Download PDF

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Publication number
WO2023272716A1
WO2023272716A1 PCT/CN2021/104229 CN2021104229W WO2023272716A1 WO 2023272716 A1 WO2023272716 A1 WO 2023272716A1 CN 2021104229 W CN2021104229 W CN 2021104229W WO 2023272716 A1 WO2023272716 A1 WO 2023272716A1
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WO
WIPO (PCT)
Prior art keywords
sleeve
actuating
assembly
actuating sleeve
push rod
Prior art date
Application number
PCT/CN2021/104229
Other languages
English (en)
French (fr)
Inventor
谢英强
Original Assignee
嘉兴森迈医疗科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 嘉兴森迈医疗科技有限公司 filed Critical 嘉兴森迈医疗科技有限公司
Priority to EP21870478.1A priority Critical patent/EP4134111A1/en
Priority to US17/767,158 priority patent/US20230347067A1/en
Priority to PCT/CN2021/104229 priority patent/WO2023272716A1/zh
Publication of WO2023272716A1 publication Critical patent/WO2023272716A1/zh

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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
    • A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
    • A61M5/2033—Spring-loaded one-shot injectors with or without automatic needle insertion
    • 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
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
    • A61M5/31515—Connection of piston with piston rod
    • 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
    • A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
    • A61M2005/2006—Having specific accessories
    • A61M2005/2013—Having specific accessories triggering of discharging means by contact of injector with patient 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
    • 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
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
    • A61M5/31576—Constructional features or modes of drive mechanisms for piston rods
    • A61M5/31583—Constructional features or modes of drive mechanisms for piston rods based on rotational translation, i.e. movement of piston rod is caused by relative rotation between the user activated actuator and the piston rod
    • A61M5/31585—Constructional features or modes of drive mechanisms for piston rods based on rotational translation, i.e. movement of piston rod is caused by relative rotation between the user activated actuator and the piston rod performed by axially moving actuator, e.g. an injection button

Definitions

  • the present invention relates to an actuating assembly of an automatic injector, in particular to an actuating assembly of an automatic injector capable of actuating a loaded vial for injection.
  • the invention also relates to an autoinjector using the actuation assembly described above.
  • the present invention is made in view of the above problems, and its purpose is to provide an automatic injector and its actuating assembly, which can simplify the structural design, improve the convenience of assembly, and meet the medical regulations and standards of the assembly and injection process.
  • the actuating assembly of the automatic injector of the present invention includes an actuating sleeve, an actuating sleeve, a first elastic member, a rear cover, a push rod and a second elastic member.
  • the actuation sleeve includes a channel; the execution sleeve is movably inserted in the channel along an axis, the execution sleeve includes two symmetrical cantilever arms, and each cantilever arm includes a clamping portion; the two ends of the first elastic member are respectively abutted against The actuation sleeve and the execution sleeve; the back cover is combined with one end of the execution sleeve; the push rod is movably installed in the execution sleeve along the axis, and the push rod includes two grooves; and the two ends of the second elastic member The ends abut against the rear cover and the push rod respectively.
  • the clamping portion of the cantilever is snapped into the groove of the push rod to limit the movement of the push rod;
  • the actuating sleeve is moved along the
  • the first elastic member is gradually compressed so that the fastening portion of the cantilever of the actuator sleeve disengages from the groove of the push rod, and the push rod is actuated by the compressed second elastic member to move toward the medicine bottle.
  • the actuating sleeve includes a flange portion, the flange portion is disposed on the outer surface of the actuating sleeve, and the actuating sleeve further includes a plurality of engaging portions; the two ends of the first elastic member The flange portion of the actuating sleeve and the plurality of abutting portions of the actuating sleeve are respectively abutted against.
  • the actuating sleeve further includes a plurality of grooves, and the plurality of engaging parts of the actuating sleeve pass through the plurality of grooves to protrude from the outer surface of the actuating sleeve.
  • the locking parts move along the grooves.
  • the actuator sleeve further includes a plurality of fastening parts
  • the rear cover further includes a plurality of fastening parts correspondingly fastened to the multiple fastening parts.
  • the rear cover further includes a plurality of guides
  • the execution sleeve further includes a plurality of corresponding guides; when the rear cover moves relative to the execution sleeve, the plurality of guides cooperate A plurality of corresponding guides move the back cover along the axis relative to the actuating sleeve.
  • the actuating sleeve further includes at least one stop structure, and the at least one stop structure is protruded from the surface of the channel.
  • each cantilever further includes a flared portion correspondingly snapped into at least one stop structure.
  • the actuating sleeve further includes at least one auxiliary installation hole, at least one auxiliary installation hole penetrates from the outer surface of the actuation sleeve to the channel, and at least one auxiliary installation hole is located adjacent to the actuation sleeve Between one end of the rear cover and at least one stop structure.
  • the automatic injector of the present invention includes the actuating assembly and the accommodating assembly as described above.
  • the accommodating component is combined with one end of the actuating component, and the accommodating component includes an outer shell, a medicine bottle sleeve and a needle cover.
  • the medicine bottle sleeve is combined with the outer casing for installing the medicine bottle; the needle cover is pierced and partly exposed on the outer casing, and the needle cover can move relative to the outer casing and the medicine bottle sleeve.
  • the needle cover when the needle cover is moved toward the outer casing by external force, the needle cover pushes against the actuation sleeve of the actuation assembly, so that the two clamping parts of the two cantilever arms of the actuator sleeve break away from the groove of the push rod, and then pass through the compressed
  • the second elastic member actuates the push rod, urging the push rod to move toward the medicine bottle to complete the injection.
  • the autoinjector further includes a grommet disposed at an end of the vial sleeve adjacent to the actuating assembly.
  • the automatic injector and its actuating assembly of the present invention by implementing the structural design of the symmetrical two cantilever arms of the sleeve and the corresponding parts, the structural design of each part can be effectively simplified, the convenience of assembly can be improved, and during the assembly and injection process It can make a sound to indicate that the assembly and injection are in place and the automatic injection is completed, which meets the medical regulations and standards of the assembly and injection process.
  • Figure 1 is an exploded view of the actuation assembly of the autoinjector of the present invention.
  • Figure 2 is a schematic illustration of the actuation assembly of the autoinjector of the present invention.
  • Fig. 3 is a cross-sectional view of the actuating sleeve of the actuating assembly of the automatic injector of the present invention piercing through the actuating sleeve.
  • Figure 4 is an exploded view of the autoinjector of the present invention.
  • Figure 5 is a schematic diagram of an autoinjector of the present invention.
  • Fig. 6 is an exploded view of the containing assembly of the automatic injector of the present invention.
  • the terms “comprises”, “including”, “has”, “containing” or any other similar terms are intended to cover a non-exclusive inclusion.
  • an element, structure, article, or device that contains multiple elements is not limited to those elements listed herein, but may include elements that are not specifically listed but are generally inherent in the element, structure, article, or device. other elements.
  • the word “or” means an inclusive “or” and not an exclusive “or”.
  • FIG. 1 is an exploded view of the actuating assembly of the auto-injector of the present invention
  • FIG. 2 is a schematic diagram of the actuating assembly of the auto-injector of the present invention. As shown in FIGS.
  • the actuating assembly 10 of the automatic injector of the present invention includes an actuating sleeve 11 , an actuating sleeve 12 , a first elastic member 13 , a rear cover 14 , a push rod 15 and a second elastic member 16 .
  • the actuating assembly 10 as a whole corresponds to an axis L, so that the movable part of the actuating assembly 10 moves along the direction of the axis L relative to other parts.
  • the actuating sleeve 11, the executing sleeve 12, the back cover 14 and the push rod 15 can be made of the same or different solid materials, such as plastic material, metal or alloy, etc., and the first elastic member 13 and the second elastic member 16 Can be made of metal or alloy.
  • the actuation sleeve 11 , the execution sleeve 12 and the push rod 15 are all similar to tubular parts in appearance, so that the hollow parts of the aforementioned parts can accommodate corresponding parts, but the present invention is not limited thereto.
  • the actuating sleeve 11 includes a channel 111 and a flange portion 112 .
  • the channel 111 runs through from one end of the actuating sleeve 11 to the other end for passing through the actuating sleeve 12 and other components.
  • the flange portion 112 is disposed on the outer surface of the actuating sleeve 11 , and the flange portion 112 protrudes from the outer surface to a sufficient height for abutting against the first elastic member 13 .
  • the actuating sleeve 11 further includes a plurality of grooves 113 and a plurality of joint portions 114 .
  • Each groove 113 is a semi-open groove, that is, each groove 113 extends from one end of the actuating sleeve 11 to the other end but does not reach the other end.
  • the plurality of grooves 113 are two symmetrically arranged grooves, but the number and positions of the plurality of grooves 113 are not limited thereto.
  • a plurality of coupling portions 114 are disposed on opposite ends of the actuating sleeve 11 forming a plurality of grooves 113 for linkage with the aforesaid accommodating components.
  • the plurality of combining portions 114 are two symmetrically disposed protrusions, but the number and positions of the plurality of combining portions 114 are not limited thereto.
  • the actuating sleeve 11 further includes at least one auxiliary installation hole 115 , and each auxiliary installation hole 115 penetrates from the outer surface of the actuating sleeve 11 to the channel 111 .
  • At least one auxiliary installation hole 115 provides a path for an external tool to assist in passing through the actuator sleeve 12 .
  • the at least one auxiliary mounting hole 115 is two openings arranged symmetrically, but the number and position of the at least one auxiliary mounting hole 115 are not limited thereto.
  • the actuating sleeve 12 is movably disposed in the channel 111 of the actuating sleeve 11 along the axis L.
  • the actuator sleeve 12 includes two symmetrical cantilever arms 121 , which control the movement of the push rod before and after the actuation sleeve 11 is actuated.
  • Each cantilever 121 basically extends along the direction of the axis L, and one end of each cantilever 121 is connected to the main body of the actuator sleeve 12 to form a fulcrum, and the other end is a suspended end, so that the distance between the cantilever 121 and the axis L can be changed based on the swing of the fulcrum. distance between.
  • Each cantilever 121 includes a clamping portion 1211 and an outward expansion portion 1212 disposed at the aforementioned free end, wherein the clamping portion 1211 extends toward a direction close to the axis L, and the outward expansion portion 1212 extends toward a direction away from the axis L and parallel to the axis L, so that
  • the actuating sleeve 12 has the minimum cross-sectional diameter length of the actuating sleeve 12 based on the direction of the vertical axis L and the surrounding area where the fastening part 1211 is located, and the actuating sleeve 12 has the minimum cross-sectional diameter length based on the direction of the vertical axis L and the surrounding area where the outer expansion part 1212 is located.
  • the maximum section diameter of the sleeve 12 is long.
  • the fastening portion 1211 is a protrusion
  • the expanding portion 1212 forms a structure with a pointed shape along the axis L direction.
  • the actuator sleeve 12 also includes a plurality of engaging portions 122 .
  • a plurality of locking portions 122 are disposed on the outer surface of the actuator sleeve 12 , and the plurality of locking portions 122 protrude from the outer surface to a sufficient height for abutting against the first elastic member 13 .
  • the plurality of locking portions 122 of the actuating sleeve 12 pass through the plurality of grooves 113 to protrude out of the The outer surface of the actuating sleeve 11 , and when the actuating sleeve 12 moves relative to the actuating sleeve 11 , the plurality of locking portions 122 move along the plurality of grooves 113 .
  • the actuating sleeve 12 further includes a plurality of fastening parts 123 .
  • a plurality of fastening portions 123 are disposed at one end of the combined rear cover 14 for buckling the rear cover 14 .
  • the plurality of fastening parts 123 are symmetrically arranged multiple stops, and each stopper forms a slope structure on the side facing the rear cover 14, but the number and positions of the multiple fastening parts 123 are not limited thereto.
  • a plurality of coupling portions 114 are disposed on the opposite ends of the actuating sleeve 11 forming the plurality of grooves 113 for coupling the aforesaid accommodating components.
  • the plurality of combining portions 114 are two symmetrically arranged stoppers, but the number and positions of the plurality of combining portions 114 are not limited thereto.
  • the actuator sleeve 12 also includes a plurality of guide structures 124 .
  • a plurality of guiding structures 124 are disposed at one end of the actuator sleeve 12 combined with the back cover 14 .
  • the plurality of guide structures 124 are two semi-open grooves arranged symmetrically, and each groove extends from the end of the actuator sleeve 12 along the direction parallel to the axis L, but the number of the plurality of guide structures 124 and The location is not limited to this.
  • first elastic member 13 Two ends of the first elastic member 13 abut against the actuation sleeve 11 and the execution sleeve 12 respectively. In one embodiment of the present invention, both ends of the first elastic member 13 abut against the flange portion 112 of the actuating sleeve 11 and the plurality of engaging portions 122 of the actuating sleeve 12 respectively, and the first elastic member 13
  • the cross-sectional diameter is greater than the minimum cross-sectional diameter of the outer surfaces of the sleeve 11 and the execution sleeve 12 , so that the first elastic member 13 is roughly assembled on the outer surfaces of the actuation sleeve 11 and the execution sleeve 12 .
  • the first elastic The member 13 When the actuating sleeve 11 moves along the direction of the axis L relative to the actuating sleeve 12 , the first elastic The member 13 is compressed, otherwise, the first elastic member 13 expands due to the elastic restoring force as the flange portion 112 of the actuating sleeve 11 moves away from the plurality of engaging portions 122 of the actuating sleeve 12 .
  • FIG. 3 is a cross-sectional view of the actuating sleeve of the actuating assembly of the automatic injector of the present invention passing through the actuating sleeve.
  • the actuating sleeve 11 of the actuating assembly 10 of the automatic injector of the present invention further includes at least one stop structure 116 . At least one stopper structure 116 protrudes from the surface of the channel 111 .
  • At least one stopper structure 116 is an annular protruding structure, and the surface of the annular protruding structure and the channel 111 of the actuating sleeve 11 will form a direction corresponding to the penetration direction of the actuating sleeve 12 and can be expanded outwards.
  • the cross-sectional diameter length of the channel 111 of the actuating sleeve 11 based on the direction of the vertical axis L is smaller than the maximum cross-sectional diameter length of the actuator sleeve 12 (for example, corresponding to the outward expansion part 1212 of the two cantilevers 121 of the actuator sleeve 12 section diameter length).
  • the actuating sleeve 12 when the actuating sleeve 12 passes through the axis L direction relative to the actuating sleeve 11, the actuating sleeve 12 cannot directly pass through the channel 111 of the actuating sleeve 11, and must be pressed against the actuating sleeve 12 first.
  • the flared portion 1212 of the two cantilevers 121 swings toward the axis L, so that the maximum cross-sectional diameter of the actuating sleeve 12 is not greater than the cross-sectional diameter of the channel 111 of the actuating sleeve 11 based on the vertical axis L, and then the threading operation is performed.
  • the tip of the expanded portion 1212 of the cantilever 121 of the actuating sleeve 12 will snap into at least one stop structure 116 and the channel 111 of the actuating sleeve 11
  • the recessed space formed between the surfaces restricts the movement of the actuator sleeve 12.
  • the assembler must use an external tool to pass through the aforementioned at least one auxiliary mounting hole 115 and apply pressure to the cantilever 121 of the actuating sleeve 12, so that the cantilever 121 of the actuating sleeve 12 moves in a direction close to the axis L to reduce the size of the actuating sleeve.
  • the maximum cross-sectional diameter of 12 is long, so that the actuator sleeve 12 can pass through at least one stop structure 116 and continue to complete the threading operation.
  • the tip of the flared portion 1212 of the cantilever 121 will make a noise due to being pushed away from at least one stop structure 116 by an external force, for the assembler to confirm whether the tip of the flared portion 1212 of the cantilever 121 has escaped from the aforementioned recessed space.
  • the rear cover 14 is combined with one end of the actuator sleeve 12 .
  • the rear cover 14 includes a plurality of fastening pieces 141 , and the multiple fastening pieces 141 are correspondingly fastened to the multiple fastening portions 123 of the actuator sleeve 12 .
  • the plurality of fastening parts 141 are symmetrically arranged elastic arm structures, and each elastic arm structure extends toward the execution sleeve 12 along the direction of the parallel axis L, and is formed on the side close to the execution sleeve 12 along the vertical axis L
  • the number, position and structure of the multiple fastening parts 141 are matched with the multiple fastening parts 123 of the aforesaid actuator sleeve 12 .
  • the elastic pieces of the multiple fastening parts 141 will move along the slope structure of the multiple fastening parts 123 until the elastic pieces of the multiple fastening parts 141 move to the multiple fastening parts. 123 to the rear.
  • the elastic pieces of the plurality of fastening parts 141 will make a sound due to the elastic force generated by crossing over the multiple fastening parts 123 and hit the execution sleeve 12, so that the assembly personnel can confirm that the multiple fastening parts 141 of the back cover 14 are connected with the execution sleeve.
  • the fastening of the multiple fastening portions 123 of the barrel 12 is completed.
  • the elastic pieces of the multiple fastening parts 141 of the rear cover 14 are blocked by the multiple fastening parts 123 of the actuator sleeve 12 along the axis L direction, so that the rear cover 14 cannot be separated from the actuator sleeve along the axis L direction. Barrel 12.
  • the rear cover 14 also includes a plurality of corresponding guiding structures 142 .
  • the plurality of corresponding guide structures 142 are symmetrically arranged two convex lines, and each convex line extends toward the execution sleeve 12 along the direction of the parallel axis L.
  • a plurality of guide structures 124 of the sleeve 12 are implemented.
  • the rear cover 14 further includes a positioning member 143 through which the second elastic member 16 passes and is positioned.
  • the positioning member 143 is a single rod-shaped member, and the rod-shaped member extends toward the actuator sleeve 12 along the parallel axis L direction.
  • the push rod 15 is mainly used to push the plunger of the medicine bottle in the accommodating assembly.
  • the push rod 15 is movably installed in the actuator sleeve 12 along the axis L.
  • the push rod 15 includes two grooves 151 .
  • the positions and structures of the two grooves 151 match the fastening portions 1211 of the two cantilever arms 121 of the actuator sleeve 12 .
  • the inside of the push rod 15 is provided with passages running through both ends of the push rod 15 , and openings of different sizes are formed at both ends of the push rod 15 .
  • the end of the push rod 15 away from the rear cover 14 forms a small opening through which the second elastic member 16 cannot pass.
  • Two ends of the second elastic member 16 abut against the back cover 14 and the push rod 15 respectively.
  • one end of the second elastic member 16 passes through the positioning member 143 of the rear cover 14 to abut against the rear cover 14 , and the other end of the second elastic member 16 penetrates through one end of the push rod 15
  • the push rod 15 is inside and abutted against the other end of the push rod 15 away from the back cover 14 .
  • the cross-sectional diameter of the second elastic member 16 is larger than the cross-sectional diameter of the positioning member 143 of the back cover 14 , but smaller than the cross-sectional diameter of the passage in the push rod 15 .
  • the actuator sleeve 12 When the actuating assembly 10 of the automatic injector of the present invention is assembled, the actuator sleeve 12 will limit the movement of the push rod 15 so that the second elastic member 16 is in a compressed state. And when the actuating sleeve 12 is actuated by the actuating sleeve 11 to release the restriction on the movement of the push rod 15 , the push rod 15 will move against the push rod 15 by the elastic restoring force of the second elastic member 16 .
  • the actuating sleeve 11 moves relative to the actuating sleeve 12 along the axis L, so that the actuating sleeve 12 makes the second An elastic member 13 is compressed, otherwise the first elastic member 13 is expanded by elastic restoring force as the flange portion 112 of the actuating sleeve 11 moves away from the engaging portions 122 of the actuating sleeve 12 .
  • the actuating sleeve 12 is first passed through the channel 111 of the actuating sleeve 11, and at this time the first elastic member 13 is clamped on the actuating sleeve 12 and the actuating sleeve 11; then, the rear cover 14 is combined with one end of the actuating sleeve 12.
  • the actuating sleeve 11 is moved relative to the actuating sleeve 12 along the axis L direction to compress the first elastic member 13, so that the two cantilevers 121 of the actuating sleeve 12 pass through the channel 111 and are exposed to the actuating sleeve
  • the end of the cylinder 11 away from the back cover 14 is then passed through the push rod 15 and the second elastic member 16 in the actuator sleeve 12, and the second elastic member 16 is in a compressed state.
  • the actuating sleeve 11 is reversely moved relative to the actuating sleeve 12 along the direction of the axis L to the original position of the uncompressed first elastic member 13, at this time the two cantilevers 121 of the actuating sleeve 12 will be limited In the channel 111 of the sleeve 11 , the fastening portion 1211 of each cantilever 121 is correspondingly locked into the groove 151 of the push rod 15 , thereby restricting the movement of the push rod 15 . Accordingly, the assembly of the actuating assembly 10 of the autoinjector of the present invention is completed.
  • the autoinjector of the present invention is used to fill and inject vials. Please refer to FIG. 4 to FIG. 6 , wherein FIG. 4 is an exploded view of the auto-injector of the present invention, FIG. 5 is a schematic diagram of the auto-injector of the present invention, and FIG. 6 is an exploded view of the containing assembly of the auto-injector of the present invention.
  • the autoinjector 1 of the present invention includes the actuating component 10 and the accommodating component 20 as described above.
  • the accommodating assembly 20 is combined with one end of the actuating assembly 10 where the push rod 15 is exposed, and the accommodating assembly 20 includes an outer casing 21 , a vial sleeve 22 and a needle cover 23 .
  • the housing assembly 20 as a whole also corresponds to the axis L, so that the movable part of the housing assembly 20 moves along said axis L relative to the other parts.
  • the outer casing 21 , the vial sleeve 22 and the needle cover 23 can be made of the same or different solid materials, such as plastic materials, metals or alloys.
  • the outer shell 21, the vial sleeve 22 and the needle cover 23 are all similar to tubular parts in appearance, so that the hollow parts of the aforementioned parts can accommodate corresponding parts, but the present invention is not limited thereto.
  • the outer casing 21 includes a plurality of fastening holes 211 and inspection holes 212 .
  • the plurality of fastening holes 211 can be fastened by the plurality of fastening members 141 of the rear cover 14 , so that the actuating assembly 10 and the outer shell 21 of the accommodating assembly 20 are fixed to each other through the rear cover 14 .
  • the above-mentioned fastening pieces 141 are provided with a protruding fastening structure on the outward side of the elastic piece, so that when the actuating component 10 is combined toward the accommodating component 20 along the axis L direction, the fastening structure of each fastening piece 141 Snap into the fastening hole 211 through the action of the elastic arm, and then make a sound due to the elastic force hitting the outer casing 21, for the assembler to confirm that the multiple fastening structures of the back cover 14 are engaged with the multiple fastening holes 211 of the outer casing 21 Finish.
  • the rear cover 14 of the actuating assembly 10 can be fixed to the outer casing 21 of the accommodating assembly 20 .
  • the inspection hole 212 allows the user to confirm the injection state of the medicine bottle 30 .
  • the vial sleeve 22 is combined with the outer casing 21 for accommodating the vial 30 .
  • the vial sleeve 22 includes an inspection portion 221, the inspection portion 221 is arranged on the outer surface of the vial sleeve 22, and the vial sleeve 22 protrudes from the outer surface to a sufficient height, so that the vial sleeve 22 is fixed on the vial sleeve 221.
  • the inspection hole 212 of the outer casing 21 can be made of transparent material at least for the viewing portion 221 , so that the user can view the vial 30 through the viewing portion 221 .
  • the needle cover 23 passes through the outer casing 21 , and a part of the needle cover 23 is exposed at one end of the outer casing 21 .
  • the needle cover 23 is movable relative to the outer housing 21 and vial sleeve 22 , and the actuation sleeve 11 is actuated by movement of the needle cover 23 .
  • the needle cover 23 includes a sliding slot 231 and a plurality of corresponding coupling portions 232 .
  • the inspection portion 221 of the vial sleeve 22 passes through the chute 231 and is fixed in the inspection hole 212 of the outer casing 21 , And when the needle cover 23 moves relative to the vial sleeve 22 , the inspection part 221 will move in the slide groove 231 .
  • a plurality of corresponding joints 232 are disposed at one end of the needle cover 23 adjacent to the actuating assembly 10, for the needle cover 23 to move toward the actuating assembly 10 to guide the plurality of joints 114 of the actuating sleeve 11 and the plurality of corresponding joints 232 Combined, the needle cover 23 and the actuating sleeve 11 are linked.
  • the plurality of corresponding coupling portions 232 are two open holes symmetrically arranged to match the plurality of coupling portions 114 .
  • the receiving assembly 20 further includes a backing ring 24 .
  • the backing ring 24 is arranged on one end of the medicine bottle sleeve 22 adjacent to the actuating assembly 10, so that when the medicine bottle 30 is installed in the medicine bottle sleeve 22 of the accommodating assembly 20, the backing ring 24 can be used as the installation of the medicine bottle 30. and injection buffers.
  • the accommodating assembly 20 further includes an extension part 25 and a cover 26 .
  • the extension part 25 is disposed on the opposite end of the accommodating assembly 20 combined with the actuating assembly 10 , and the extension part 25 is fixed on the vial sleeve 22 .
  • the cover 26 is used to close the outer casing 21 of the accommodating assembly 20 and the opposite end of the actuating assembly 10, so that the automatic injector 1 of the present invention can be prevented from being exposed to the outer casing through the cover 26 when it is not in use. 21 of the needle cover 23 .
  • the medicine bottle 30 is first installed in the medicine bottle sleeve 22 of the containing assembly 20, and at this time the cover body 26 of the containing assembly 20 closes the outer casing 21 and exposes the needle cover. 23; then, the actuating assembly 10 is combined with the other end of the accommodating assembly 20. Accordingly, the assembly of the automatic injector 1 of the present invention is completed.
  • the cover body 26 is first removed from the outer casing 21, so that the needle cover 23 is exposed; then, the autoinjector 1 of the present invention is One end of the exposed needle cover 23 is pressed against the body part to be injected, and the outer casing 21 is held by hand to exert force toward the skin, so that the needle cover 23 moves inwardly toward the outer casing 21 .
  • the end of the needle cover 23 adjacent to the actuating assembly 10 will push against the actuating sleeve 11, causing the actuating sleeve 11 to be actuated to move along the axis L direction relative to the actuating sleeve 12, and the first elastic member 13 is gradually compressed.
  • the moving actuating sleeve 11 will release the restriction on the cantilever 121 of the actuating sleeve 12, so that the cantilever 121 will pop up in a direction away from the axis L, causing the outward expansion part 1212 of the cantilever 121 to bounce the striker cover 23 and make a rattling sound , prompting the user that the injection program has started, which meets the standards of medical regulations.
  • the fastening portion 1211 of the cantilever 121 will disengage from the groove 151 of the push rod 15, so the push rod 15 is actuated to move towards the medicine bottle 30 by the compressed second elastic member 16 in an uninterrupted state, thereby pushing The plunger in the medicine bottle 30 is used to drive the medicine output towards the needle site.
  • the user will move the autoinjector 1 of the present invention away from his body, at this time, the actuating sleeve 11 returns to its original position through the elastic restoring force of the first elastic member 13, and drives the needle cover 23 to move again. It is exposed on the outer casing 21 to conceal the needle part of the medicine bottle 30 .

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Abstract

一种自动注射器（1）的致动组件（10），用于结合装设有药瓶（30）的容置组件（20），自动注射器（1）的致动组件（10）包括：致动套筒（11）、执行套筒（12）、第一弹性件（13）、后盖（14）、推杆（15）以及第二弹性件（16）。致动组件（10）整体对应一个轴线，且致动套筒（11）通过执行套筒（12）的对称的二悬臂（121）及对应部件的结构设计，不仅用于致动套筒（11）被致动前后控制推杆（15）的移动与否，还用于在组装时发出响声以提醒组装是否到位和自动注射结束。据此，当致动套筒（11）被致动后能促使推杆（15）朝向药瓶（30）移动，以完成自动注射。

Description

自动注射器及其致动组件 【技术领域】
本发明是关于一种自动注射器的致动组件，特别是一种可致动所装设药瓶以执行注射的自动注射器的致动组件。本发明还涉及使用上述致动组件的自动注射器。
【背景技术】
以往患者有药物的注射需求时，总是需要医护人员协助执行注射程序。随着医疗技术的进步，可供患者自行操作施打的自动注射针具已经广泛的被应用。患者只需通过单手操作自动注射针具，即可完成药物的注射，降低了医疗人力及资源的消耗，且提高了注射的便利性及灵活度。
然而，为了达到便于操作且能执行自动注射的目的，现有的自动注射针具在结构设计上往往过于复杂，导致此类针具不利于组装，造成制造成本的增加。因此，如何能简化组装零件的结构及数量，降低自动注射针具的组装难度，且更利于使用者操作，实为一个值得研究的课题。
【发明内容】
本发明是鉴于上述问题而做出的，其目的在于，提供一种自动注射器及其致动组件，其能简化结构设计，提高组装的便利性，并符合组装及注射过程的医疗法规标准。
本发明的自动注射器的致动组件，包括致动套筒、执行套筒、第一弹性件、后盖、推杆以及第二弹性件。致动套筒包括通道；执行套筒沿着一个轴线可移动的穿设于通道内，执行套筒包括对称的二悬臂，且各悬臂包括卡固部；第一弹性件的两端分别抵接致动套筒及执行套筒；后盖结合于执行套筒的一端；推杆，沿着轴线可移动的穿设于执行套筒内，推杆包括二凹槽；以及第二弹性件 的两端分别抵接后盖及推杆。其中当执行套筒的悬臂被限制于致动套筒的通道内时，悬臂的卡固部卡入推杆的凹槽以限制推杆的移动；当致动套筒相对于执行套筒沿着轴线方向移动，第一弹性件逐渐被压缩而使得执行套筒的悬臂的卡固部脱离推杆的凹槽时，推杆通过已压缩的第二弹性件被致动而朝向药瓶移动。
在本发明的一个实施例中，致动套筒包括凸缘部，凸缘部设置于致动套筒的外表面，且执行套筒还包括多个卡抵部；第一弹性件的两端分别抵接致动套筒的凸缘部及执行套筒的多个卡抵部。
在本发明的一个实施例中，致动套筒还包括多个沟槽，执行套筒的多个卡抵部穿过多个沟槽以凸出于致动套筒的外表面，且当执行套筒相对于致动套筒移动时，多个卡抵部沿着多个沟槽移动。
在本发明的一个实施例中，执行套筒还包括多个扣接部，且后盖还包括对应扣接于多个扣接部的多个扣接件。
在本发明的一个实施例中，后盖还包括多个导引件，且执行套筒还包括多个对应导引件；当后盖相对于执行套筒移动时，通过多个导引件配合多个对应导引件使得后盖沿着轴线相对于执行套筒移动。
在本发明的一个实施例中，致动套筒还包括至少一止挡结构，至少一止挡结构凸设于通道的表面。
在本发明的一个实施例中，各悬臂还包括对应卡入至少一止挡结构的外扩部。
在本发明的一个实施例中，致动套筒还包括至少一辅助安装孔，至少一辅助安装孔自致动套筒的外表面贯通至通道，且至少一辅助安装孔位于致动套筒邻近后盖的一端及至少一止挡结构之间。
本发明的自动注射器，包括如前所述的致动组件以及容置组件。容置组件 结合于致动组件的一端，且容置组件包括外壳体、药瓶套筒以及针盖。药瓶套筒结合于外壳体以供装设药瓶；针盖穿设且部分外露于外壳体，且针盖可相对于外壳体及药瓶套筒移动。其中当针盖受外力朝外壳体移动时，通过针盖推抵致动组件的致动套筒，使得执行套筒的二悬臂的二卡固部脱离推杆的凹槽，进而通过已压缩的第二弹性件致动推杆，促使推杆朝向药瓶移动以完成注射。
在本发明的一个实施例中，自动注射器还包括垫环，垫环设置于药瓶套筒邻近致动组件的一端。
根据本发明的自动注射器及其致动组件，通过执行套筒的对称的二悬臂及对应部件的结构设计，能够有效简化各部件的结构设计，提高组装的便利性，且于组装及注射过程中能发出响声以提示组装及注射到位和自动注射结束，符合组装及注射过程的医疗法规标准。
本发明所采用的具体技术，将通过以下的实施例及附呈图式作进一步的说明。
【附图说明】
图1是本发明的自动注射器的致动组件的爆炸图。
图2是本发明的自动注射器的致动组件的示意图。
图3是本发明的自动注射器的致动组件的致动套筒穿设执行套筒的剖视图。
图4是本发明的自动注射器的爆炸图。
图5是本发明的自动注射器的示意图。
图6是本发明的自动注射器的容置组件的爆炸图。
主要组件符号说明：
1         自动注射器
10        致动组件
11        致动套筒
111       通道
112       凸缘部
113       沟槽
114       结合部
115       辅助安装孔
116       止挡结构
12        执行套筒
121       悬臂
1211      卡固部
1212      外扩部
122       卡抵部
123       扣接部
124       导引结构
13        第一弹性件
14        后盖
141       扣接件
142       对应导引结构
143       定位件
15        推杆
151       凹槽
16        第二弹性件
20        容置组件
21        外壳体
211       扣接孔
212       检视孔
22        药瓶套筒
221       检视部
23        针盖
231       滑槽
232       对应结合部
24        垫环
30        药瓶
L         轴线
【具体实施方式】
为充分了解本发明的目的、特征及功效，兹藉由下述具体的实施例，并配合所附的图式，对本发明做一详细说明，说明如后。
在本发明中，是使用「一」或「一个」来描述本文所述的单元、元件和组件。此举只是为了方便说明，并且对本发明的范畴提供一般性的意义。因此，除非很明显的另指他意，否则此种描述应理解为包括一个、至少一个，且单数也同时包括多个。
在本发明中，用语「包含」、「包括」、「具有」、「含有」或其他任何类似用语意欲涵盖非排他性的包括物。举例而言，含有多个要件的一元件、结 构、制品或装置不仅限于本文所列出的此等要件而已，而是可以包括未明确列出但却是该元件、结构、制品或装置通常固有的其他要件。除此之外，除非有相反的明确说明，用语「或」是指涵括性的「或」，而不是指排他性的「或」。
本发明的自动注射器的致动组件用于结合装设有药瓶的容置组件，通过致动组件致动药瓶以朝向使用者执行注射操作。请先参考图1及图2，其中图1是本发明的自动注射器的致动组件的爆炸图，图2是本发明的自动注射器的致动组件的示意图。如图1及图2所示，本发明的自动注射器的致动组件10包括致动套筒11、执行套筒12、第一弹性件13、后盖14、推杆15以及第二弹性件16。致动组件10整体对应一个轴线L，使得致动组件10的可移动部件沿着所述轴线L的方向相对于其他部件移动。致动套筒11、执行套筒12、后盖14及推杆15可采用相同或不同的坚固材质制成，例如塑性材料、金属或合金等，而第一弹性件13及第二弹性件16可采用金属或合金制成。在结构设计上，致动套筒11、执行套筒12及推杆15在外观上均类似管状件，使得前述部件的中空部位可供容置相应部件，但本发明不以此为限。
致动套筒11包括通道111及凸缘部112。通道111自致动套筒11的一端贯通至另一端，以供穿设执行套筒12等部件。凸缘部112设置于致动套筒11的外表面，且凸缘部112自外表面凸出足够高度，以供抵接第一弹性件13。
致动套筒11还包括多个沟槽113及多个结合部114。各沟槽113为半开放式沟槽，也就是说，各沟槽113自致动套筒11的一端朝另一端延伸但未抵达另一端。此处多个沟槽113为对称设置的二沟槽，但多个沟槽113的设置数量及位置不以此为限。多个结合部114设置于致动套筒11形成多个沟槽113的相对端，供与前述容置组件连动。此处多个结合部114为对称设置的二凸块，但多个结合部114的设置数量及位置不以此为限。
在本发明的一个实施例中，致动套筒11还包括至少一辅助安装孔115，各辅助安装孔115自致动套筒11的外表面贯通至通道111。至少一辅助安装孔115提供以外部工具辅助穿设执行套筒12的路径。此处至少一辅助安装孔115为对称设置的二开孔，但至少一辅助安装孔115的设置数量及位置不以此为限。
执行套筒12沿着轴线L可移动的穿设于致动套筒11的通道111内。执行套筒12包括对称的二悬臂121，于致动套筒11被致动前后控制推杆的移动与否。各悬臂121基本上沿着轴线L的方向延伸，且各悬臂121的一端连接执行套筒12的主体而形成支点，另一端则为一个悬空端，使其能基于支点摆动而改变与轴线L之间的距离。各悬臂121包括设置于前述悬空端的卡固部1211及外扩部1212，其中卡固部1211朝接近轴线L的方向延伸，而外扩部1212朝远离轴线L及平行轴线L的方向延伸，使得执行套筒12基于垂直轴线L的方向于卡固部1211所在位置的围绕区域具有执行套筒12的最小截面径长，而基于垂直轴线L的方向于外扩部1212所在位置的围绕区域具有执行套筒12的最大截面径长。此处卡固部1211为一个凸块，而外扩部1212则形成一个沿轴线L方向具有尖端外型的结构。
执行套筒12还包括多个卡抵部122。多个卡抵部122设置于执行套筒12的外表面，且多个卡抵部122自外表面凸出足够高度，以供抵接第一弹性件13。在本发明的一个实施例中，当执行套筒12穿设于致动套筒11的通道111内时，执行套筒12的多个卡抵部122穿过多个沟槽113以凸出于致动套筒11的外表面，且当执行套筒12相对于致动套筒11移动时，多个卡抵部122沿着多个沟槽113移动。
在本发明的一个实施例中，执行套筒12还包括多个扣接部123。多个扣接部123设置于结合后盖14的一端，以供扣接后盖14。此处多个扣接部123为对称设置的多个挡块，且各挡块于面向后盖14的一侧形成斜面结构，但多个扣接部123的设置数量及位置不以此为限。多个结合部114设置于致动套筒11形成多个沟槽 113的相对端，供结合前述容置组件。此处多个结合部114为对称设置的二挡块，但多个结合部114的设置数量及位置不以此为限。
执行套筒12还包括多个导引结构124。多个导引结构124置于执行套筒12结合后盖14的一端。此处多个导引结构124为对称设置的二半开放式沟槽，且各沟槽自执行套筒12的端部沿平行轴线L的方向延伸，但多个导引结构124的设置数量及位置不以此为限。
第一弹性件13的两端分别抵接致动套筒11及执行套筒12。在本发明的一个实施例中，第一弹性件13的两端分别抵接致动套筒11的凸缘部112及执行套筒12的多个卡抵部122，且第一弹性件13的截面径长大于套筒11及执行套筒12的外表面的最小截面径长，使得第一弹性件13大致组装于致动套筒11及执行套筒12的外表面。当致动套筒11相对于执行套筒12沿着轴线L的方向移动时，随着致动套筒11的凸缘部112接近执行套筒12的多个卡抵部122而使得第一弹性件13被压缩，反之随着致动套筒11的凸缘部112远离执行套筒12的多个卡抵部122而使得第一弹性件13通过弹性回复力而扩张。
请参考图3是本发明的自动注射器的致动组件的致动套筒穿设执行套筒的剖视图。如图3所示，在本发明的一个实施例中，本发明的自动注射器的致动组件10的致动套筒11还包括至少一止挡结构116。至少一止挡结构116凸设于通道111的表面。此处至少一止挡结构116为一个环状凸起结构，且环状凸起结构与致动套筒11的通道111表面之间会形成对应执行套筒12的穿设方向且可供外扩部1212的尖端卡入的凹陷空间。在结构设计上，致动套筒11的通道111基于垂直轴线L的方向的截面径长小于执行套筒12的最大截面径长(例如执行套筒12的二悬臂121的外扩部1212处所对应的截面径长)。据此，当执行套筒12相对于致动套筒11沿着轴线L方向穿设时，执行套筒12并无法直接通过致动套筒11的通道111，必须先压抵执行套筒12的二悬臂121的外扩部1212以朝轴线L摆动，使得执 行套筒12的最大截面径长不大于致动套筒11的通道111基于垂直轴线L方向的截面径长，再执行穿设操作。接着，当执行套筒12的悬臂121的外扩部1212抵达至少一止挡结构116的位置时，外扩部1212的尖端会卡入至少一止挡结构116与致动套筒11的通道111表面之间形成的凹陷空间，而限制执行套筒12的移动。此时，组装人员必须通过外部工具穿过前述至少一辅助安装孔115并施压于执行套筒12的悬臂121，使得执行套筒12的悬臂121朝接近轴线L的方向移动而缩减执行套筒12的最大截面径长，以利于执行套筒12可穿过至少一止挡结构116而继续完成穿设操作。在前述过程中，悬臂121的外扩部1212的尖端会因为受外力弹离至少一止挡结构116而发出响声，供组装人员确认悬臂121的外扩部1212的尖端是否已脱离前述凹陷空间。
又如图1及图2所示，后盖14结合于执行套筒12的一端。在本发明的一个实施例中，后盖14包括多个扣接件141，且多个扣接件141对应扣接于执行套筒12的多个扣接部123。此处多个扣接件141为对称设置的多个弹臂结构，且各弹臂结构沿平行轴线L方向朝执行套筒12延伸，并于接近执行套筒12的一侧形成沿垂直轴线L方向延伸的弹片，多个扣接件141的设置数量、位置及结构均配合前述执行套筒12的多个扣接部123。当后盖14结合执行套筒12的过程中，多个扣接件141的弹片会沿着多个扣接部123的斜面结构移动，直到多个扣接件141的弹片移动至多个扣接部123的后方。在前述过程中，多个扣接件141的弹片会因为越过多个扣接部123产生弹力撞击执行套筒12而发出响声，供组装人员确认后盖14的多个扣接件141与执行套筒12的多个扣接部123扣接完成。此时，后盖14的多个扣接件141的弹片沿着轴线L方向会受到执行套筒12的多个扣接部123的阻挡而使得后盖14无法沿着轴线L的方向脱离执行套筒12。
后盖14还包括多个对应导引结构142。此处多个对应导引结构142为对称设置的二凸条，且各凸条沿平行轴线L方向朝执行套筒12延伸，多个对应导引结构 142的设置数量、位置及结构均配合前述执行套筒12的多个导引结构124。当后盖14结合执行套筒12的过程中，通过后盖14的多个对应导引结构142配合套筒12的多个导引结构124，使得后盖14与执行套筒12能保持沿平行轴线L的方向结合。
此外，在本发明的一个实施例中，后盖14还包括供第二弹性件16穿设且定位的定位件143。此处定位件143为单一的杆状件，且杆状件沿平行轴线L方向朝执行套筒12延伸。
推杆15主要用以推动容置组件内的药瓶的柱塞。推杆15沿着轴线L可移动的穿设于执行套筒12内。在本发明的一个实施例中，推杆15包括二凹槽151，二凹槽151的设置位置及结构配合前述执行套筒12的二悬臂121的卡固部1211。推杆15内部设有通道贯穿推杆15的两端，且于推杆15两端形成不同大小的开口。推杆15于远离后盖14的一端形成第二弹性件16无法通过的较小开口。
第二弹性件16的两端分别抵接后盖14及推杆15。在本发明的一个实施例中，第二弹性件16的一端穿设于后盖14的定位件143以抵接后盖14，第二弹性件16的另一端则自推杆15的一端穿入推杆15内并抵接到推杆15远离后盖14的另一端。第二弹性件16的截面径长大于后盖14的定位件143的截面径长，但小于推杆15内通道的截面径长。当本发明的自动注射器的致动组件10经组装完成后，执行套筒12会限制住推杆15的移动，使得第二弹性件16呈被压缩状态。而当执行套筒12被致动套筒11致动而解除针对推杆15的移动限制后，推杆15即会通过第二弹性件16的弹性回复力推抵推杆15移动。
致动套筒11相对于执行套筒12沿着轴线L方向移动，使得执行套筒12随着致动套筒11的凸缘部112接近执行套筒12的多个卡抵部122而使得第一弹性件13被压缩，反之随着致动套筒11的凸缘部112远离执行套筒12的多个卡抵部122而使得第一弹性件13通过弹性回复力而扩张。
本发明的自动注射器的致动组件10于组装过程中，是先将执行套筒12穿设于致动套筒11的通道111内，且此时将第一弹性件13夹设于执行套筒12及致动套筒11之间；接着，将后盖14结合于执行套筒12的一端。处理完前述程序后，将致动套筒11相对于执行套筒12沿着轴线L方向移动而压缩第一弹性件13，使得执行套筒12的二悬臂121通过通道111并外露于致动套筒11远离后盖14的一端，接着将推杆15及第二弹性件16穿设于执行套筒12内，并使第二弹性件16呈被压缩状态。最后，将致动套筒11相对于执行套筒12沿着轴线L方向反向移动至未压缩第一弹性件13的原位置，此时执行套筒12的二悬臂121会被限制于致动套筒11的通道111内，且各悬臂121的卡固部1211会对应卡入推杆15的凹槽151，进而限制推杆15的移动。据此，完成本发明的自动注射器的致动组件10的组装。
当本发明的自动注射器的致动组件10的致动套筒11被致动而相对于执行套筒12沿着轴线L方向移动，导致第一弹性件13逐渐被压缩时，致动套筒11会解除对执行套筒12的悬臂121的限制，使得悬臂121朝远离轴线L的方向弹移，此时悬臂121的卡固部1211会脱离推杆15的凹槽151，因此推杆15通过已压缩的第二弹性件16被致动而朝向远离后盖14的方向移动。
本发明的自动注射器用于装设并注射药瓶。请参考图4至图6，其中图4是本发明的自动注射器的爆炸图，图5是本发明的自动注射器的示意图，图6是本发明的自动注射器的容置组件的爆炸图。如图4至图6所示，本发明的自动注射器1包括如前所述的致动组件10及容置组件20。容置组件20结合于致动组件10外露推杆15的一端，且容置组件20包括外壳体21、药瓶套筒22以及针盖23。容置组件20整体同样对应轴线L，使得容置组件20的可移动部件沿着所述轴线L相对于其他部件移动。外壳体21、药瓶套筒22及针盖23可采用相同或不同的坚固材质制成，例如塑性材料、金属或合金等。在结构设计上，外壳体21、药瓶套筒22 及针盖23在外观上均类似管状件，使得前述部件的中空部位可供容置相应部件，但本发明不以此为限。
外壳体21包括多个扣接孔211及检视孔212。多个扣接孔211可供后盖14的多个扣接件141扣接，使得致动组件10通过后盖14与容置组件20的外壳体21彼此固定。前述各扣接件141于弹片朝外的一侧设有凸起的扣接结构，使得致动组件10沿轴线L方向朝容置组件20结合的过程中，各扣接件141的扣接结构通过弹臂的作用卡入扣接孔211内，进而因为弹力撞击外壳体21而发出响声，供组装人员确认后盖14的多个扣接结构与外壳体21的多个扣接孔211卡合完成。此时，致动组件10的后盖14即可固定于容置组件20的外壳体21。检视孔212可供使用者确认药瓶30的注射状态。
药瓶套筒22结合于外壳体21以供装设药瓶30。药瓶套筒22包括检视部221，检视部221设置于药瓶套筒22的外表面，且药瓶套筒22自外表面凸出足够高度，使得药瓶套筒22通过检视部221固定于外壳体21的检视孔212。在本发明的一个实施例中，药瓶套筒22至少针对检视部221可采用透明材质制成，以利于使用者通过检视部221检视药瓶30。
针盖23穿设于外壳体21，且针盖23的一部分外露于外壳体21的一端。针盖23可相对于外壳体21及药瓶套筒22移动，且通过针盖23的移动可致动致动套筒11。针盖23包括滑槽231及多个对应结合部232。在本发明的一个实施例中，当药瓶套筒22穿设于针盖23内时，药瓶套筒22的检视部221穿过滑槽231而卡固于外壳体21的检视孔212，且当针盖23相对于药瓶套筒22移动时，检视部221会于滑槽231内移动。多个对应结合部232设置于针盖23邻近致动组件10的一端，供针盖23朝致动组件10移动后能引导致动套筒11的多个结合部114与多个对应结合部232相结合，使得针盖23与致动套筒11产生连动。此处多个对应结合部232为配合多个结合部114对称设置的二开放孔。
在本发明的一个实施例中，容置组件20还包括垫环24。垫环24设置于药瓶套筒22邻近致动组件10的一端，使得药瓶30装设于容置组件20的药瓶套筒22内时，通过垫环24可作为药瓶30的装设及注射缓冲件。
此外，在本发明的一个实施例中，容置组件20还包括延长部件25及盖体26。延长部件25设置于容置组件20结合致动组件10的相对端，且延长部件25固定于药瓶套筒22。盖体26则用以封闭容置组件20的外壳体21结合致动组件10的相对端，使得本发明的自动注射器1在尚未使用的状态下，通过盖体26可避免误触外露于外壳体21的针盖23。
本发明的自动注射器1于组装过程中，是先将药瓶30装设于容置组件20的药瓶套筒22内，且此时容置组件20的盖体26封闭外壳体21外露针盖23的一端；接着，将致动组件10结合于容置组件20的另一端。据此，完成本发明的自动注射器1的组装。
以下可配合图1至图6所示，当使用者欲使用本发明的自动注射器1时，首先自外壳体21取下盖体26，使得针盖23外露；接着，将本发明的自动注射器1以外露针盖23的一端抵住欲注射的身体部位，并手握外壳体21朝皮肤施力，使得针盖23朝外壳体21向内移动。此时，针盖23于邻近致动组件10的一端会推抵致动套筒11，致使致动套筒11被致动而相对于执行套筒12沿着轴线L方向移动，第一弹性件13逐渐被压缩。移动后的致动套筒11会解除对执行套筒12的悬臂121的限制，使得悬臂121朝远离轴线L的方向弹出，致使悬臂121的外扩部1212弹击针盖23而发出喀拉响声，提示用户注射程序已启动，符合医疗法规的标准。接着，悬臂121的卡固部1211会脱离推杆15的凹槽151，因此推杆15在无干扰的状态下通过已压缩的第二弹性件16被致动而朝向药瓶30移动，进而推动药瓶30内的柱塞以驱使药剂朝针头部位输出。当注射完成后，使用者将本发明的自动注射器1 自身体部位移开，此时致动套筒11通过第一弹性件13的弹性回复力回到原位，并带动针盖23移动而再次外露于外壳体21以隐蔽药瓶30的针头部位。
虽然本发明的实施例揭露如上所述，然并非用以限定本发明，任何熟习相关技艺者，在不脱离本发明的精神和范围内，举凡依本发明权利要求所述的形状、构造、特征、方法及数量当可做些许的变更，因此本发明的专利保护范围须视本说明书所附的权利要求范围所界定者为准。

Claims (10)

  1. 一种自动注射器的致动组件，用于结合装设有一药瓶的一容置组件，其特征在于，所述自动注射器的致动组件包含：
    一致动套筒，包括一通道；
    一执行套筒，沿着一轴线可移动的穿设于所述通道内，所述执行套筒包括对称的二悬臂，且各所述悬臂包括一卡固部；
    一第一弹性件，所述第一弹性件的两端分别抵接所述致动套筒及所述执行套筒；
    一后盖，结合于所述执行套筒的一端；
    一推杆，沿着所述轴线可移动的穿设于所述执行套筒内，所述推杆包括二凹槽；以及一第二弹性件，所述第二弹性件的两端分别抵接所述后盖及所述推杆；
    其中当所述执行套筒的所述悬臂被限制于所述致动套筒的所述通道内时，所述悬臂的所述卡固部卡入所述推杆的所述凹槽以限制所述推杆的移动；当致动套筒相对于所述执行套筒沿着所述轴线方向移动，所述第一弹性件逐渐被压缩而使得所述执行套筒的所述悬臂的所述卡固部脱离所述推杆的所述凹槽时，所述推杆通过已压缩的所述第二弹性件被致动而朝向所述药瓶移动。
  2. 根据权利要求1所述的自动注射器的致动组件，其特征在于，其中所述致动套筒包括一凸缘部，所述凸缘部设置于所述致动套筒的外表面，且所述执行套筒还包括多个卡抵部；所述第一弹性件的两端分别抵接所述致动套筒的所述凸缘部及所述执行套筒的所述多个卡抵部。
  3. 根据权利要求2所述的自动注射器的致动组件，其特征在于，其中所述致动套筒还包括多个沟槽，所述执行套筒的所述多个卡抵部穿过所述多个沟槽以凸出于所述致动套筒的外表面，且当所述执行套筒相对于所述致动套筒移动时，所述多个卡抵部沿着所述多个沟槽移动。
  4. 根据权利要求1所述的自动注射器的致动组件，其特征在于，其中所述执行套筒还包括多个扣接部，且所述后盖还包括对应扣接于所述多个扣接部的多个扣接件。
  5. 根据权利要求1所述的自动注射器的致动组件，其特征在于，其中所述后盖包括多个导引件，且所述执行套筒还包括多个对应导引件；当所述后盖相对于所述执行套筒移动时，通过所述多个导引件配合所述多个对应导引件使得所述后盖沿着所述轴线相对于所述执行套筒移动。
  6. 根据权利要求1所述的自动注射器的致动组件，其特征在于，其中所述致动套筒还包括至少一止挡结构，且所述至少一止挡结构凸设于所述通道的表面。
  7. 根据权利要求6所述的自动注射器的致动组件，其特征在于，其中各所述悬臂还包括对应卡入所述至少一止挡结构的一外扩部。
  8. 根据权利要求6所述的自动注射器的致动组件，其特征在于，其中所述致动套筒还包括至少一辅助安装孔，所述至少一辅助安装孔自所述致动套筒的外表面贯通至所述通道，且所述至少一辅助安装孔位于所述致动套筒邻近所述后盖的一端及所述至少一止挡结构之间。
  9. 一种自动注射器，用以装设并注射一药瓶，其特征在于，所述自动注射器包含：
    一根据权利要求1至8中任一项所述的致动组件；以及
    一容置组件，结合于所述致动组件的一端，所述容置组件包括：
    一外壳体；
    一药瓶套筒，结合于所述外壳体以供装设所述药瓶；以及
    一针盖，穿设且部分外露于所述外壳体，且所述针盖可相对于所述外壳体及所述药瓶套筒移动；
    其中当所述针盖受外力朝所述外壳体移动时，通过所述针盖推抵所述致动组件的所述致动套筒，使得所述执行套筒的所述悬臂的所述卡固部脱离所述推杆的所述凹槽，进而通过已压缩的所述第二弹性件致动所述推杆，促使所述推杆朝向所述药瓶移动以完成注射。
  10. 根据权利要求9所述的自动注射器，其特征在于，其中所述容置组件还包括一垫环，所述垫环设置于所述药瓶套筒邻近所述致动组件的一端。
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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102497899A (zh) * 2009-07-07 2012-06-13 Shl集团有限责任公司 注射装置
CN105246528A (zh) * 2013-03-22 2016-01-13 特克法马许可公司 带有发信机构的自动注射装置
CN106061529A (zh) * 2014-02-14 2016-10-26 卡贝欧洲有限公司 自动注射装置
US20170337845A1 (en) * 2014-11-20 2017-11-23 Carebay Europe Ltd Automatic injection training device
US20190167903A1 (en) * 2016-07-26 2019-06-06 Tecpharma Licensing Ag Device for administering a dose of a fluid product
US10357619B1 (en) * 2018-02-08 2019-07-23 Chalbourne Brasington Auto-injection device
CN112165963A (zh) * 2018-05-24 2021-01-01 诺华股份有限公司 药物自动输送装置
CN112933346A (zh) * 2021-02-03 2021-06-11 宁波易舒医疗科技有限公司 一种轴向推进机构、自动注射装置及该装置的工作方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2010234284B2 (en) * 2009-04-03 2013-06-06 Shl Group Ab Medicament delivery device
WO2012173553A1 (en) * 2011-06-17 2012-12-20 Shl Group Ab Injection device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102497899A (zh) * 2009-07-07 2012-06-13 Shl集团有限责任公司 注射装置
CN105246528A (zh) * 2013-03-22 2016-01-13 特克法马许可公司 带有发信机构的自动注射装置
CN106061529A (zh) * 2014-02-14 2016-10-26 卡贝欧洲有限公司 自动注射装置
US20170337845A1 (en) * 2014-11-20 2017-11-23 Carebay Europe Ltd Automatic injection training device
US20190167903A1 (en) * 2016-07-26 2019-06-06 Tecpharma Licensing Ag Device for administering a dose of a fluid product
US10357619B1 (en) * 2018-02-08 2019-07-23 Chalbourne Brasington Auto-injection device
CN112165963A (zh) * 2018-05-24 2021-01-01 诺华股份有限公司 药物自动输送装置
CN112933346A (zh) * 2021-02-03 2021-06-11 宁波易舒医疗科技有限公司 一种轴向推进机构、自动注射装置及该装置的工作方法

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