WO2014205604A1 - 注射器 - Google Patents

注射器 Download PDF

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Publication number
WO2014205604A1
WO2014205604A1 PCT/CN2013/000782 CN2013000782W WO2014205604A1 WO 2014205604 A1 WO2014205604 A1 WO 2014205604A1 CN 2013000782 W CN2013000782 W CN 2013000782W WO 2014205604 A1 WO2014205604 A1 WO 2014205604A1
Authority
WO
WIPO (PCT)
Prior art keywords
sleeve
needle
push rod
sheath
injection
Prior art date
Application number
PCT/CN2013/000782
Other languages
English (en)
French (fr)
Inventor
叶进民
Original Assignee
群康生技股份有限公司
荣民制药股份有限公司
信东生技股份有限公司
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 群康生技股份有限公司, 荣民制药股份有限公司, 信东生技股份有限公司 filed Critical 群康生技股份有限公司
Priority to CN201380077429.4A priority Critical patent/CN105339027B/zh
Priority to PCT/CN2013/000782 priority patent/WO2014205604A1/zh
Publication of WO2014205604A1 publication Critical patent/WO2014205604A1/zh

Links

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
    • A61M5/3205—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
    • A61M5/3213—Caps placed axially onto the needle, e.g. equipped with finger protection guards
    • 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
    • A61M5/19—Syringes having more than one chamber, e.g. including a manifold coupling two parallelly aligned syringes through separate channels to a common discharge assembly
    • 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
    • A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
    • A61M2005/206—With 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
    • A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
    • A61M2005/2073—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically preventing premature release, e.g. by making use of a safety lock
    • 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
    • A61M5/24—Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic
    • A61M5/2455—Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic with sealing means to be broken or opened
    • A61M5/2466—Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic with sealing means to be broken or opened by piercing without internal pressure increase
    • A61M2005/247—Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic with sealing means to be broken or opened by piercing without internal pressure increase with fixed or steady piercing means, e.g. piercing under movement of ampoule
    • 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
    • A61M5/3278—Apparatus for destroying used needles or syringes
    • A61M2005/3284—Deformaton of needle by deflection or bending

Definitions

  • the present invention relates to a syringe, and more particularly to a syringe that ensures the safety of the needle and the vial. Background technique
  • the composition of the existing syringe mainly comprises a syringe body for loading a medicament bottle, the syringe body is provided with a needle at one end thereof, and the other end of the syringe body is provided with an injection advancement assembly, and a sleeve is provided at one end of the syringe body having a needle
  • the cover can be removed and the needle cover can be placed inside.
  • the medicine bottle should be prefilled into the syringe body, and the needle should be inserted into the medicine bottle.
  • the cover is removed, the needle is inserted into the body to be injected, and the injection advancement assembly is successively pressed, and the medicine bottle is pressed.
  • the liquid medicament inside is injected into the body of the injecting person.
  • the needle cover is coupled to one end of the syringe body, because the cap and the syringe body have a simple snap-fit structure, because the needle is not in a completely sealed aseptic environment, and is susceptible to external force. The action is detached, causing the needle to be contaminated, resulting in the syringe having the defect of insufficient safety.
  • the syringe is filled with the medicament, bubbles are likely to remain, and the bubble is further squeezed out, and when the bubble is squeezed, the medicament is easily connected. Extrusion, and the amount of drug loading must be increased, so the use of the syringe is difficult and technically high, which is not conducive to the use of emergency injection.
  • the injection propulsion assembly is only installed in the injection body, and there is no other safety protection mechanism, so the injection propulsion assembly is susceptible to external force and the liquid medicament in the medicament bottle is ejected through the needle, resulting in The inconvenience of using the syringe.
  • the technical problem to be solved by the present invention is to provide a syringe for solving the failure of the prior art syringe to provide a sterile safety protection function for the needle and the medicament bottle.
  • the technical solution proposed by the present invention is: Providing a syringe comprising:
  • a needle assembly comprising a hollow needle sheath, at least one needle and a film, wherein the needle sheath forms a needle positioning space, and the needle sheath is provided with a soft plug at one end of the needle positioning space to form a closed end, The needle sheath forms a fitting opening at the other end of the needle positioning space, the needle is placed in the needle positioning space, and the sealing film is fixed in the assembly opening of the needle sheath, so that the needle is sealed Inside the needle sheath with a sealed membrane;
  • a medicine kit comprising a hollow vial sleeve and a set of sleeve end caps disposed at a side end of the vial casing for accommodating at least one medicament bottle, and the medicament bottle corresponds to the needle;
  • An injection advancement assembly comprising an outer sheath set and at least one injection pusher set, the outer sheath set is sleeved outside the medicament set and provided with an injection pusher assembly, and the outer sheath set is assembled at one end of the needle guard
  • the end portion of the sheath group away from the needle sheath has a safety card structure
  • the injection pusher group includes an injection push rod and a compression spring, and one end of the injection push rod passes through the medicine set
  • the sleeve end cover extends into the medicament bottle to abut the piston, and the other end of the injection push rod is sleeved with a compression spring and has a safety buckle at the end, and the two ends of the compression spring respectively abut the injection push rod and the outer sheath group to make the compression
  • the spring can provide the injection push rod with an elastic force toward the medicine bottle, and the safety buckle structure of the outer sheath group can buckle the safety buckle of the injection push rod;
  • a safety sheath comprising a set of bodies and a safety pin formed in the sleeve and correspondingly injecting the number of push rods, the safety sheath being detachably assembled over the end of the outer sheath set so that the safety latch can be inserted
  • the injection push rod is buckled and fixed.
  • the injection pusher includes a first rod portion, a second rod portion and an abutting portion between the first rod portion and the second rod portion, and the second rod end portion is formed
  • the safety spring buckle is disposed on the outer side of the second rod portion of the injection push rod, and the first rod portion of the injection push rod passes through the sleeve end cover of the medicine sleeve, and can be used for reaching into the medicine bottle to abut a piston in the bottle bottle, the two ends of the compression spring abut against the abutting portion of the injection push rod and the inner side wall of the outer sheath group, and the end of the second rod portion of the injection push rod forms a tapered taper toward the outer dimension
  • the latching protrusion has a slot through the tapered latching protrusion and a spring piece located outside the slot, and the latch has a latching hole communicating with the slot to form the safety latch;
  • the outer sheath set includes an outer sleeve, an inner sleeve, a push rod sleeve and a compression sleeve, wherein:
  • One end of the outer sleeve is assembled at the assembly opening of the needle sheath, and the inner sleeve is provided with the medicine sleeve assembly and is installed together inside the outer sleeve;
  • the inner sleeve forms a perforation corresponding to the soft plug of the medicament bottle, and the inner sleeve has a perforated end contact sealing film;
  • the push rod sleeve is connected to the inner sleeve away from the end of the needle sheath, the injection push rod is disposed in the inner sleeve and the push rod sleeve, and the end of the push rod sleeve has a buckle end wall formed on the buckle end wall Providing a through hole for the safety clip of the injection push rod, the buckle end wall providing a portion where the end of the compression spring abuts;
  • the pressing sleeve is sleeved on the outside of the push rod sleeve and extends into the outer sleeve, and the pressing sleeve can be applied to the outer sleeve
  • the push rod sleeve moves axially at a limited distance, and the end of the pressing sleeve away from the needle sheath extends out of the outer sleeve and has a pressing end wall, and the pressing end wall is formed with a through hole corresponding to the push rod sleeve
  • the through hole, the buckle end wall of the push rod sleeve and the pressing end wall of the pressing sleeve constitute the safety buckle structure, so that the safety buckle of the injection push rod can pass through the through hole of the push rod sleeve, and wear Provided in the through hole of the pressing sleeve, the elastic piece of the safety buckle protrudes out of the through hole of the pressing end wall of the pressing sleeve, and the safety sheath can
  • the through hole is a tapered hole which is tapered from the inner to outer dimension
  • the inner wall of the pressing sleeve forms a limiting groove
  • the limiting protrusion is formed on the outer wall of the push rod sleeve, and the limiting protrusion is formed.
  • the limiting slot limits the distance the pressing sleeve can move axially relative to the push rod sleeve.
  • the needle tip has a first tip portion and a second tip portion respectively formed between the first tip portion and the second tip portion, and the first tip portion of the needle head extends to the soft portion.
  • a sealing body the second tip of the needle is oriented toward the sealing film;
  • the needle sheath comprises a set of shells, a needle positioning seat and a set of rings, wherein the needle positioning space is formed in the sleeve, and the sleeve is at one end Having the soft plug to form a closed end, the assembly opening is formed at the other end of the sleeve, the needle positioning seat is mounted in the needle positioning space of the sleeve and can be axially displaced along the sleeve, the needle positioning seat has An end plate portion and a ring plate portion formed on the outer peripheral edge of the end plate portion extending toward one end, a space is formed in the needle positioning seat, and the ring plate portion faces the assembly opening of the casing, and the sealing film is disposed
  • the needle assembly has two or more needles which are mounted in parallel in the needle guard.
  • the medicine kit comprises a medicine bottle casing and a set of shell end caps, wherein the medicine bottle casing provides the medicine bottle, wherein the medicine bottle casing has one end corresponding to the The medicine bottle is perforated, and the other end of the medicine bottle sleeve is an open end.
  • the sleeve end cover is fixed to the open end of the medicine bottle casing, and the medicine bottle is sealed and fixed in the medicine set.
  • the medicine kit comprises a medicine bottle casing and a set of shell end caps, wherein the medicine bottle casing provides the medicine bottle, wherein the medicine bottle casing has one end corresponding to the The perforation of the vial, the other end of the vial case is an open end, and the cover end cap is fixed to the open end of the vial case, The drug bottle is sealed and fixed in the medicine set.
  • the medicine kit comprises a medicine bottle casing and a set of shell end caps, wherein the medicine bottle casing provides the medicine bottle, wherein the medicine bottle casing has one end corresponding to the medicine bottle
  • the perforation, the other end of the vial sleeve is an open end, and the sleeve end cap is fixed to the open end of the vial casing, and the medicament bottle is sealed and fixed in the medicament set.
  • the invention is created by the front-opening syringe, which mainly comprises the needle being sealed in the needle sheath provided with the sealing film, so that the needle is isolated from the outside, so that the needle can be manufactured and packaged in a sterile environment, and the needle can be prevented from being exposed.
  • the medicine bottle is packaged in a medicine kit to provide good protection for the medicine bottle.
  • the user When the syringe of the present invention is injected, the user only needs to remove the safety sheath first, so that the safety pin in the safety sheath is separated from the safety buckle of the injection pusher, so that the syringe is in an injectable state, so that the utility model has good use and convenience. Sex and safety; when the user releases the buckle between the injection advancement assembly and the injection pusher, the injection spring can be pushed by the elastic force of the compression spring to cause the needle to pass through the needle sheath and penetrate the medicament bottle. In the middle, the bubble-free filling agent is automatically completed, and the medicine in the elastic pushing bottle is continuously injected into the body of the injected person, so that the syringe has a quick and simple function when used for injection.
  • the syringe of the present invention can also directly contain two or more medicine bottles and a corresponding number of needles, and can apply a plurality of medicines to the person to be injected at the same time, and can be applied to applications such as emergency injection.
  • a second object of the present invention is to use a safety sheath to be placed over the needle assembly to bend the needle with a safety pin in the safety sheath to provide a safe and simple function for bending the needle.
  • Figure 1 is a cross-sectional view showing a preferred embodiment of a syringe of the present invention for mounting a single vial
  • Figure 2 is a cross-sectional view of a preferred embodiment of the syringe of the present invention for mounting a two vial
  • Figure 3 is a schematic view of Figure 2; A schematic view showing the appearance of a preferred embodiment of the syringe;
  • FIG. 4 is a perspective exploded view of the preferred embodiment of the syringe of Figure 2 and the two drug bottles;
  • Figure 5 is a perspective exploded view of the needle sheath of the preferred embodiment of the syringe of Figures 2 to 4;
  • FIG. 4 is a perspective view of the two injection push rod in the preferred embodiment of the syringe;
  • FIG. 7 is a preferred embodiment of the syringe provided with the two drug bottles shown in FIG. 2, the safety sheath is removed and the pressure sleeve is pressed.
  • Figure 8 is a preferred embodiment of the syringe with the two drug bottles shown in Figure 2, after releasing the safety buckle state, the compression spring provides elastic force to pierce the needle tip of the first tip of the needle, the second tip of the needle a state diagram of use in the vial;
  • Fig. 9 is a view showing the use state of the preferred embodiment of the syringe provided with the two drug bottles shown in Fig. 2 after the injection is completed, using a safety sheath sleeved on the outer side of the needle sheath and the bending needle.
  • the syringe is mainly composed of a needle assembly 1, a medicament set 2, an injection advancement assembly 3, and A safety sheath 4 for providing one or more medicament bottles 5 for use therein for injection purposes.
  • the needle assembly 1 includes a hollow needle sheath 10, one or more needles 11 and a film 12, and a needle positioning space 131 is formed in the needle sheath 10.
  • the needle sheath 10 is provided with a soft sealing 133 at the end of the needle positioning space 131 to form a closed end, and the needle sheath 10 forms a fitting opening 132 at the other end of the needle positioning space 131, and the needle 11 is provided through the fitting opening 132.
  • Inserted into the needle positioning space 131 when the needles 11 are two or more, the needles 11 are mounted in a parallel arrangement in the needle guard 10, and the needles 11 include a first tip portion 111 and a second portion.
  • the tips 112 are respectively located at the two ends of the needle 11, the first tip portion 111 of the needle 11 extends to the soft plug 133, the second tip portion 112 of the needle 11 extends toward the fitting opening 132, and the sealing film 12 is fixed to the needle
  • the needle positioning space 131 is closed in the fitting opening 132 of the sheath 10, and the needle 11 is sealed in the needle sheath 10 provided with the sealing film 12 to prevent the needle 11 from being exposed and contaminated. As shown in FIG. 4 and FIG.
  • the needle guard 10 includes a set of shells 13, a needle positioning seat 14 and a set of rings 15, and the sleeve 13 forms the The needle positioning space 131, the sleeve 13 end has the soft sealing 133 to form a closed end, the assembly opening 132 is formed at the other end of the casing 13, and the needle positioning seat 14 is mounted on the casing 13.
  • the needle positioning space 131 is axially displaceable along the casing 13.
  • the needle positioning seat 14 has an end plate portion 141 and a ring plate portion 142 formed on the outer periphery of the end plate portion 141 toward one end, so that the needle positioning seat 14 is provided.
  • a space is formed in which the ring plate portion 142 faces the fitting opening 132 of the casing 13, the sealing film 12 is disposed in the fitting opening 132 of the casing 13, and the needle 11 has a blocking piece 113 adjacent to the second tip portion 112.
  • the first tip portion 111 of the needle penetrates into the soft plug 133 of the casing 13, the second tip 112 of the needle passes through the needle positioning seat 14, and the blocking piece 113 abuts against the end plate portion 141 of the needle positioning seat 14.
  • the sleeve ring 15 is mounted on the inner peripheral wall of the fitting opening 132 of the casing 13 for assembling the injection propulsion assembly 3.
  • the medicine kit 2 includes a medicine bottle casing 20 and a set of shell end caps 21 for accommodating one or two medicine bottles 5, the medicine bottle 5
  • a bottle body 50 is included.
  • One end of the bottle body 50 is a bottle end having a soft plug 51.
  • the soft plug 51 of the bottle end is provided with a fixing collar 53 for fixing, so that the bottle end is a soft plug 51.
  • the other end of the medicine bottle 5 is an open end, and a piston 52 is disposed in the bottle body 50 to form a closed liquid medicine filling space inside the bottle body 50, and the medicine bottle casing 20 is provided with the medicine bottle 5
  • the vial casing 20 has a perforation formed at one end of the soft closure 51 corresponding to the medicament bottle 5, and the other end of the vial casing 20 is an open end, and the sleeve end cap 21 is fixed to the medicine.
  • the open end of the bottle casing 20 is sealed and fixed in the medicine set 2 .
  • the injection propulsion assembly 3 includes an outer sheath set 30 and one or more sets of injection pusher sets 31, and the outer sheath set 30 is sleeved on the medicine sleeve.
  • the outer side of the group 2, and the injection pusher set 31 are provided, wherein the outer sheath set 30-end is assembled at the assembly opening 132 of the needle guard 10, and the outer sheath set 30 is away from the distal end of the needle guard 10.
  • the injection pusher set 31 includes an injection push rod 311 and a compression spring 310.
  • the injection push rod 311 includes a first rod portion 312, a second rod portion 313, and a
  • the abutting portion 314 between the first rod portion 312 and the second rod portion 313 has a safety latch 315 at the end of the second rod portion 313, and the compression spring 310 is sleeved outside the second rod portion 313 of the injection push rod 311.
  • the first rod portion 312 of the injection push rod 311 passes through the sleeve end cover 21 of the medicine sleeve 2 and protrudes into the bottle body 50 of the medicine bottle 5, and abuts against the piston 52, and the two ends of the compression spring 310 respectively abut the injection push
  • the abutting portion 314 of the rod 311 and the inner side wall of the distal end portion of the outer sheath group 30, the compression spring 310 can provide the injection push rod 311 toward the medicament bottle 5
  • the safety snap structure of the outer sheath set 30 can snap the safety latch 315 of the injection pusher 311.
  • the injection pusher 31 1 may be of the same length or unequal length, and the length of the injection pusher is determined by the medicament.
  • the capacity of the liquid medicine in the bottle is set accordingly.
  • the safety sheath 4 is detachably assembled to the end of the outer sheath set 30.
  • the safety sheath 4 includes a set of bodies 40 and is formed in the sleeve 40 corresponding to The safety pin 41 of the injection rod 31 1 is injected, and the safety bolt 41 can be inserted into the safety buckle structure of the outer sheath group 30 and the safety buckle 3 15 of the injection push rod 31 1 , and the injection push rod 31 1 is given The buckle is fixed.
  • the end of the second rod portion 313 of the injection push rod 3 1 1 forms a tapered buckle protrusion 316 which is tapered toward the outer dimension. And having a slot 3 17 passing through the tapered latching portion 316 and a resilient piece 3 18 located outside the slot 317, the latching hole 319 having a connecting slot 317 in the elastic piece 3 18, and forming the safety latch 315.
  • the outer sheath set 30 includes an outer sleeve 32, an inner sleeve 33, a push rod sleeve 34 and a compression sleeve 35, wherein:
  • the outer sleeve 32 is disposed outside the needle sheath 10; the inner sleeve 33 is provided with the medicine kit 2, and is installed together in the outer sleeve 32, and the inner sleeve 33 is assembled at the end
  • the casing 13 fits into the socket ring 15 at the opening 132.
  • the inner sleeve 33 forms a perforation corresponding to the soft plug 133 of the medicament bottle 5, and the inner sleeve 33 has a perforated end contact sealing film 12, and the needles 1 1 correspond to the softness of a medicament bottle 5, respectively.
  • Block 133 Block 133.
  • the push rod sleeve 34 is disposed at an end of the inner sleeve 33 away from the needle guard 10, and the injection push rod 31 is disposed in the inner sleeve 33 and the push rod sleeve 34,
  • the end of the push rod sleeve 34 has a snap end wall 341 formed on the buckle end wall to provide a through hole 342 for providing the safety poppet 315 of the injection push rod 31 1 and a compression spring 310 end provided by the snap end wall 341 The part where the part is abutted.
  • the pressing sleeve 35 is sleeved on the outside of the push rod sleeve 34 and extends into the outer sleeve 32.
  • the pressing sleeve 35 can axially move with a limited distance between the outer sleeve 32 and the push rod sleeve 34.
  • the end of the pressing sleeve 35 extends away from the outer side of the outer sleeve 32 and has a pressing end wall 351.
  • the inner wall of the pressing sleeve 35 forms a limiting slot 353 for the push rod sleeve.
  • the outer wall of the tube 34 forms a limiting protrusion 343.
  • the limiting protrusion 343 is located in the limiting slot 353.
  • the limiting slot 353 limits the distance that the pressing sleeve 35 can move axially relative to the push rod sleeve 34.
  • the wall 351 is formed with a through hole 352 corresponding to the through hole 342 of the push rod sleeve 34, and the through hole 352 can be a tapered hole which is tapered from the inner to outer dimension by the push rod sleeve 34.
  • the buckle end wall 341 and the pressing end wall 351 of the pressing sleeve 35 constitute the safety snap structure, so that the safety buckle 315 of the injection push rod 31 1 can pass through the push rod sleeve 34.
  • the through hole is bored in the through hole 352 of the pressing sleeve 35, and the elastic piece 318 of the safety latch 315 protrudes out of the through hole 352 of the pressing end wall 351 of the pressing sleeve 35.
  • the safety sheath 4 can be sleeved on the outer side of the outer sleeve 32 and the pressing sleeve 35, and the safety bolts 41 in the safety sheath 4 are respectively inserted into the pin holes 318 of the elastic piece 318 of the safety buckle 315 of the injection push rod 31 1 . 19 and extending into the slot 317, and then pushing the tapered latching projection 316 to expand and snap to the side of the latching end wall 341 of the push rod sleeve 34 to be in a safely positioned state.
  • the syringe of the present invention can prevent the needle 11 from being exposed and contaminated because the needle 11 is sealed in the needle sheath 10 provided with the sealing film 12.
  • the pharmaceutical bottle 5 is packaged in the medicine set 20, which provides a good safety mode for the medicine bottle 5.
  • the user in use, the user must first remove the safety sheath 4, so that the safety latch 41 in the safety sheath 4 is disengaged from the safety latch 315 of the injection pusher 31 1 to make the syringe injectable. .
  • the user only needs to press the pressing sleeve 35, so that the pressing sleeve 35 pushes the safety buckle 315 to retract and can pass through the through hole 342 of the push rod sleeve 34, thereby solving the buckle state, as shown in FIG.
  • the injection push rod 31 1 , the medicine bottle 5 and the inner sleeve 33 are ejected first, and the second tip portion 12 of the needle 1 1 is inserted into the soft seal of the bottle end of the medicine bottle 5 .
  • Plug 51 into the bottle, and automatically complete the bubble-free filling agent the first tip 11 1 of the needle 11 pierces the soft plug 133 of the needle guard 10 and penetrates the body of the person to be injected, and is in the compression spring
  • the 310 continues to provide an elastic force, and the push injection plunger 31 1 injects the medicine in the medicine bottle 5 into the body of the injected person.
  • the syringe of the present invention contains two or more drug bottles and a corresponding number of needles, it is possible to apply a plurality of drugs to the person to be injected at the same time, and can be applied to the use of emergency injection.
  • the syringe is removed from the injecting body, and the safety sheath 4 is sleeved outside the needle sheath 10, and the needle 11 is bent by the safety pin 41, and The bent needle 1 1 is placed inside the safety sheath 4 to prevent the user and the people around him from being stabbed by the needle.

Abstract

一种注射器，其包括针头组件（1），药剂套组（2）以及注射推进组件（3），所述针头组件是令针头（11）被密封于设有封膜（12）的针头护套（10）内，使针头（11）与外界隔离，而能于无菌环境下制造与包装，避免针头（11）外露而受到污染，另以药剂套组（2）包装药剂瓶（5），对药剂瓶（5）提供良好的防护，又以针头组件（1）、内装有药剂瓶（5）的药剂套组（2）、注射推进组件（3）与安全护套（4）组合成注射器后，凭借安全护套（4）与注射推进组件（3）间的安全防护机制，使注射器免被误触的注射，确保注射器的安全性，于注射器使用时，具有自动完全无气泡药剂装填的简便性。

Description

注 射 器 技术领域
本发明涉及一种注射器， 尤指一种可确保针头与药剂瓶安全防护功能的注 射器。 背景技术
现有注射器的组成构造， 其主要包含有一用于装填药剂瓶的注射器本体， 注射器本体的一端设有针头， 注射器本体的另一端设有注射推进组件， 并于注 射器本体具有针头的一端套设有一可拆组套盖， 将针头罩盖于内。 在注射前， 须预先将药剂瓶装填于注射器本体， 并使针头伸入药剂瓶内， 注射时， 将套盖 取下， 以针头刺入待注射者体内， 接续按压注射推进组件， 将药剂瓶内的液态 药剂注入被注射者体内。
然而， 现有注射器的组成构造中， 其针头套盖结合于注射器本体一端， 因 套盖与注射器本体间是单纯的卡接构造， 因针头非处于完全密封的无菌环境下， 且易受外力作用而脱离， 造成针头受到污染， 导致注射器存在有使用安全性不 足的缺陷， 此外， 该注射器装填药剂时， 易有气泡存留， 而须进一步将气泡挤 出， 且挤出气泡时， 易连接药剂挤出， 而须增加药剂装填量， 故该注射器的使 用， 其困难度与技术性偏高， 而不利于紧急注射的用途。
再者， 现有注射器的组成构造中， 注射推进组件仅装设于注射本体中， 并 无其他安全防护机制， 故注射推进组件易受外力作用而将药剂瓶内的液态药剂 通过针头射出， 造成注射器使用上的不便。 发明内容
本发明所要解决的技术问题是： 提供一种注射器， 解决现有注射器使用前， 对于针头与药剂瓶未能提供无菌的安全防护功能。
本发明所提出的技术解决方案是： 提供一种注射器， 其包含：
一针头组件， 其包含一中空的针头护套、 至少一个针头与一封膜， 针头护 套中形成一针头定位空间， 针头护套于针头定位空间的一端设有软质封塞形成 封闭端， 针头护套于针头定位空间的另一端形成一装配开口， 所述针头置入该 针头定位空间中， 所述封膜固定于针头护套的装配开口中， 使针头被密封于设 有封膜的针头护套内；
一药剂套组， 其包含一中空的药瓶套壳与一组设于药瓶套壳侧端的套壳端 盖， 用于容置至少一个药剂瓶， 且所述药剂瓶对应于针头；
一注射推进组件， 其包含一外护套组以及至少一注射推杆组， 外护套组套 设于药剂套组外侧且提供注射推杆组装设其中， 外护套组一端组接于针头护套 的装配开口处， 护套组远离针头护套的末端部具有一安全卡制构造， 注射推杆 组包含一注射推杆与一压缩弹簧， 所述注射推杆的一端穿过药剂套组的套壳端 盖而伸入药剂瓶中抵接活塞， 注射推杆的另一端套设压缩弹簧且末端具有一安 全弹扣， 压缩弹簧两端分别抵接注射推杆与外护套组， 使压缩弹簧能对注射推 杆提供朝向药剂瓶方向的弹力， 外护套组的安全卡扣构造能卡扣注射推杆的安 全弹扣； 以及
一安全护套， 其包含一套体以及形成于套体内且相应注射推杆数量的安全 插销， 所述安全护套是可拆组地套设于外护套组的末端， 使安全插销能插入于 外护套组的安全卡扣构造与注射推杆的安全弹扣中， 将注射推杆予以卡扣固定。
如上所述的注射器中， 所述注射推杆包含有一第一杆部、 一第二杆部与一 位于第一杆部与第二杆部之间的抵接部， 第二杆部末端形成所述安全弹扣， 压 缩弹簧套设于注射推杆的第二杆部外侧， 注射推杆的第一杆部穿过药剂套组的 套壳端盖， 并能用于伸入药剂瓶中抵接瓶剂瓶中的活塞， 压缩弹簧两端分别抵 接注射推杆的抵接部与外护套组的内侧壁上， 所述注射推杆第二杆部末端形成 一朝外尺寸渐缩的锥形卡扣凸部， 并具有一通过锥形卡扣凸部的切槽与位于切 槽外侧的弹片， 弹片中具有一连通切槽的插销孔， 构成所述安全弹扣；
所述外护套组包含一外套管、 一内套管、 一推杆套管以及一按压套管， 其 中：
该外套管一端组接于针头护套的装配开口处， 该内套管是提供药剂套组装 设其中， 并一同装设于外套管内部；
该内套管相应于药剂瓶的软质封塞处形成穿孔， 内套管具有穿孔的端部接 触封膜；
该推杆套管接设于内套管远离针头护套一端， 注射推杆置设于内套管与推 杆套管内， 推杆套管末端具有一卡扣端壁， 卡扣端壁上形成提供注射推杆的安 全弹扣穿设的通孔， 卡扣端壁提供压缩弹簧端部抵接的部位；
该按压套管套设于推杆套管外侧且伸入外套管内， 按压套管能于外套管与 推杆套管之间有限距离地轴向移动， 按压套管远离针头护套的一端伸出外套管 外侧且具有一按压端壁， 按压端壁形成有贯孔， 贯孔相应于推杆套管的通孔， 推杆套管的卡扣端壁与按压套管的按压端壁构成所述安全卡扣构造， 使注射推 杆的安全弹扣能穿过推杆套管的通孔， 且穿设于按压套管的贯孔中， 安全弹扣 的弹片凸出于按压套管的按压端壁的贯孔外， 安全护套能套设于外套管与按压 套管外侧， 安全护套中的安全插销分别插入注射推杆的安全弹扣的弹片的插销 孔及伸入切槽中， 进而推挤锥形卡扣凸部扩张而卡扣于推杆套管的卡扣端壁側 面。
如上所述的注射器中， 所述贯孔为由内朝外尺寸渐缩的锥孔， 所述按压套 管内壁形成限位槽， 于推杆套管外壁形成限位凸块， 限位凸块位于限位槽中， 限位槽限制按压套管相对于推杆套管可轴向移动的距离。
如上所述的注射器中， 所述针头两端分别形成第一尖部与第二尖部， 于第 一尖部与第二尖部之间具有一挡片， 针头的第一尖部伸至软质封塞， 针头第二 尖部朝封膜的方向； 所述针头护套包含一套壳、 一针头定位座与一套接环， 该 套壳中形成所述的针头定位空间， 套壳一端具有所述软质封塞而形成封闭端， 所述装配开口是形成于套壳另一端， 针头定位座装设于套壳的针头定位空间中 并可沿套壳轴向位移， 针头定位座具有一端板部以及一成形于端板部外周缘朝 一端延伸的环板部， 针头定位座中形成一空间， 环板部朝向套壳的装配开口， 所述封膜设于套壳的装配开口中， 针头于邻近第二尖部处具有一挡片， 针头第 一尖部刺入套壳的软质封塞中， 针头第二尖部穿过针头定位座， 挡片抵靠于针 头定位座的端板部， 所述套接环装设于套壳的装配开口内周壁上， 用于组接注 射推进组件。
如上所述的注射器中， 所述针头组件具有两个以上的针头， 这些针头平行 排列地装设于针头护套内。
如上所述的注射器中， 所述药剂套组包含一药瓶套壳与一套壳端盖， 所述 药瓶套壳提供所述药剂瓶装设其中， 药瓶套壳具有一端相对应于所述药剂瓶的 穿孔， 药瓶套壳的另一端为开口端， 套壳端盖固设于药瓶套壳的开口端， 将所 述药剂瓶封存固定于药剂套组内。
如上所述的注射器中， 所述药剂套组包含一药瓶套壳与一套壳端盖， 所述 药瓶套壳提供所述药剂瓶装设其中， 药瓶套壳具有一端相对应于所述药剂瓶的 穿孔， 药瓶套壳的另一端为开口端， 套壳端盖固设于药瓶套壳的开口端， 将所 述药剂瓶封存固定于药剂套组内。
如上所述的注射器中， 所述药剂套组包含一药瓶套壳与一套壳端盖， 药瓶 套壳提供所述药剂瓶装设其中， 药瓶套壳具有一端相对应于所述药剂瓶的穿孔， 药瓶套壳的另一端为开口端， 套壳端盖固设于药瓶套壳的开口端， 将所述药剂 瓶封存固定于药剂套组内。
本发明凭借前揭注射器创作， 其主要是令针头被密封于设有封膜的针头护 套内， 使针头与外界隔离， 故能于无菌环境下制造与包装， 而能达到避免针头 外露而受到污染的情形， 另以药剂套组包装药剂瓶， 对药剂瓶提供良好的防护。 并于针头组件、 内装有药剂瓶的药剂套组、 注射推进组件与安全护套组合成注 射器后， 凭借安全护套与注射推进组件间的安全防护机制， 使注射器免被误触 的注射， 确保注射器的安全性。
本发明注射器于注射时， 使用者仅须先拆下安全护套， 使安全护套中的安 全插销脱离注射推杆的安全弹扣， 使注射器处于可注射的状态， 使其具有良好 的使用简便性与安全性； 待使用者解除注射推进组件与注射推杆间的卡扣状态 时， 即能利用压缩弹簧的弹力推动注射推杆产生弹射， 进而使针头穿出针头护 套并刺入药剂瓶中， 自动完成无气泡充填药剂， 接续提供弹力推挤药剂瓶内的 药剂注入被注射者的体内， 使注射器于注射使用时兼具快速而简便的功能。
此外， 本发明的注射器亦能直接内装两个以上的药剂瓶与相应数量的针头， 可对被注射者同时施打多种药剂， 而能应用于紧急注射等用途。
本发明的次一目的， 是利用安全护套套设于针头组件上， 以安全护套中的 安全插销弯折针头， 使针头的弯折搡作上具有安全而简便的功用。 附图说明
图 1是本发明注射器适用于装设单一药剂瓶的较佳实施例的剖面示意图； 图 2是本发明注射器适用于装设二药剂瓶的较佳实施例的剖面示意图； 图 3是图 2所示注射器较佳实施例的外观示意图；
图 4是图 2所示注射器较佳实施例与二药剂瓶的立体分解示意图； 图 5是图 2至图 4所示注射器较佳实施例中的针头护套的立体分解示意图； 图 6是图 2及图 4所示注射器较佳实施例中的二注射推杆立体示意图； 图 7是图 2所示装设有二药剂瓶的注射器较佳实施例拆下安全护套与按下 按压套管， 解除安全弹扣状态的使用状态图； 图 8是图 2所示装设有二药剂瓶的注射器较佳实施例解除安全弹扣状态后， 压缩弹簧提供弹力使针头的第一尖部刺穿针头护套， 针头的第二尖部刺入药剂 瓶内的使用状态图；
图 9是图 2所示装设有二药剂瓶的注射器较佳实施例于注射完毕后， 使用 安全护套套设于针头护套外侧及折弯针头的使用状态图。
附图标号说明： 1针头组件； 10针头护套； 11针头； 111第一尖部； 112第 二尖部； 113挡片； 12封膜； 13套壳； 131针头定位空间； 132装配开口； 133 软质封塞； 14针头定位座； 141端板部； 142环板部； 15套接环； 2药剂套组； 20药瓶套壳； 21套壳端盖； 3注射推进组件； 30外护套组； 31注射推杆组； 310 压缩弹簧； 311注射推杆； 312第一杆部； 313第二杆部； 314抵接部； 315安全 弹扣； 316卡扣凸部； 317切槽； 318弹片； 319插销孔； 32外套管； 33内套管； 34推杆套管； 341卡扣端壁； 342通孔； 343限位凸块； 35按压套管； 351按压 端壁； 352贯孔； 353限位槽； 4安全护套； 40套体； 41安全插销； 5药剂瓶； 50瓶体； 51软质封塞； 52活塞； 53固定套环。 具体实施方式
以下配合图式及本发明的较佳实施例， 进一步阐述本发明为达成预定发明 目的所采取的技术手段。
如图 1、 图 2及图 3所示， 是揭示本发明注射器的数种较佳实施例， 该注射 器的组成构造主要是包含一针头组件 1、 一药剂套组 2、 一注射推进组件 3以及 一安全护套 4， 用于提供一个或两个以上的药剂瓶 5装设其中， 提供注射用途。
如图 4及图 5所示， 所述针头组件 1 包含一中空的针头护套 10、 一个或两 个以上的针头 11与一封膜 12， 所述针头护套 10中形成一针头定位空间 131, 针头护套 10于针头定位空间 131—端设有软质封塞 133形成封闭端， 针头护套 10于针头定位空间 131的另一端形成一装配开口 132, 提供所述针头 11经由装 配开口 132置入该针头定位空间 131 中， 当针头 11为两个以上时， 这些针头 11 是呈平行排列地装设于针头护套 10内， 所述针头 11 包含一第一尖部 111与一 第二尖部 112分别位于针头 11的两端， 针头 11的第一尖部 111伸至软质封塞 133, 针头 11第二尖部 112伸向装配开口 132方向， 所述封膜 12是固定于针头 护套 10的装配开口 132内而将针头定位空间 131予以封闭， 使所述针头 11被 密封于设有封膜 12的针头护套 10内， 以避免针头 11外露而受到污染。 如图 4及图 5所示， 于本较佳实施例中， 所述针头护套 10包含一套壳 13、 一针头定位座 14与一套接环 15, 该套壳 13中形成所述的针头定位空间 131， 套壳 13—端具有所述软质封塞 133而形成封闭端， 所述装配开口 132是形成于 套壳 13另一端， 所述针头定位座 14装设于套壳 13的针头定位空间 131中并可 沿套壳 13轴向位移， 所述针头定位座 14具有一端板部 141 以及一成形于端板 部 141外周缘朝一端延伸的环板部 142, 使针头定位座 14中形成一空间， 环板 部 142朝向套壳 13的装配开口 132中，所述封膜 12设于套壳 13的装配开口 132 中， 针头 11于邻近第二尖部 112处具有一挡片 113， 针头第一尖部 111刺入套 壳 13的软质封塞 133中， 针头第二尖部 112穿过针头定位座 14, 且挡片 113抵 靠于针头定位座 14的端板部 141上， 所述套接环 15是装设于套壳 13的装配开 口 132内周壁上， 用于组接注射推进组件 3。
如图 2及图 4所示，所述药剂套组 2是包含一药瓶套壳 20与一套壳端盖 21, 用于容置一个或两个以上的药剂瓶 5， 所述药剂瓶 5包含一瓶体 50， 瓶体 50的 一端为一具有软质封塞 51的瓶端， 瓶端的软质封塞 51周边并设有固定套环 53 予以固定， 使瓶端为软质封塞 51予以封闭， 药剂瓶 5的另端为开口端， 瓶体 50 中设有一活塞 52, 使瓶体 50内部形成一密闭的液态药剂装填空间， 所迷药瓶套 壳 20是提供所述药剂瓶 5装设其中， 药瓶套壳 20具有一端相对应于药剂瓶 5 的软质封塞 51处形成有穿孔， 药瓶套壳 20的另一端为开口端， 套壳端盖 21是 固设于药瓶套壳 20的开口端， 将所述药剂瓶 5封存固定于药剂套组 2内。
如图 2及图 4所示， 所述注射推进组件 3是包含一外护套组 30以及一组或 两组以上的注射推杆组 31, 所述外护套组 30是套设于药剂套组 2外侧， 以及提 供注射推杆组 31装设其中，外护套组 30—端组接于针头护套 10的装配开口 132 处， 所述外护套组 30远离针头护套 10的末端部具有一安全卡制构造， 所述注 射推杆组 31 包含一注射推杆 311与一压缩弹簧 310, 所述注射推杆 311 包含有 一第一杆部 312、 一第二杆部 313， 以及一位于第一杆部 312与第二杆部 313之 间的抵接部 314， 第二杆部 313末端具有一安全弹扣 315， 压缩弹簧 310套设于 注射推杆 311的第二杆部 313外侧， 注射推杆 311的第一杆部 312穿过药剂套 组 2的套壳端盖 21而伸入药剂瓶 5的瓶体 50中，并抵接活塞 52,压缩弹簧 310 两端分别抵接注射推杆 311的抵接部 314与外护套组 30末端部的内侧壁上， 压 缩弹簧 310能对注射推杆 311提供朝向药剂瓶 5方向的弹力， 外护套组 30的安 全卡扣构造能对注射推杆 311的安全弹扣 315予以卡扣。 如图 2及图 6所示， 所述当注推杆组 31为两组以上时， 所述注射推杆 31 1 可为等长或不等长的型态， 注射推杆的长度并依药剂瓶内的液态药剂的容量而 作相应的设定。
如图 2及图 4所示，所述安全护套 4是可拆组地套设于外护套组 30的末端， 该安全护套 4包含有一套体 40以及形成于套体 40内相应于注射推杆 31 1数量 的安全插销 41， 所述安全插销 41能插入于外护套组 30的安全卡扣构造与注射 推杆 31 1的安全弹扣 3 15中， 将注射推杆 31 1予以卡扣固定。
如图 2、 图 4及图 6所示， 于本较佳实施例中， 所述注射推杆 3 1 1第二杆部 313末端形成一朝外尺寸渐缩的锥形卡扣凸部 316， 并具有一通过锥形卡扣凸部 316的切槽 3 17与位于切槽 317外侧的弹片 3 18 ,弹片 3 18中具有一连通切槽 317 的插销孔 319 , 而构成所述的安全弹扣 315。
如图 2及图 4所示， 所述外护套组 30包含一外套管 32、 一内套管 33、 一 推杆套管 34以及一按压套管 35 , 其中：
所述外套管 32是设于针头护套 10外侧； 所述内套管 33是提供药剂套组 2 装设其中， 并一同装设于外套管 32内部， 且以内套管 33—端组接于套壳 13装 配开口 132处的套接环 15中。 所述内套管 33相应于药剂瓶 5的软质封塞 133 处形成穿孔， 内套管 33具有穿孔的端部接触封膜 12 , 所述针头 1 1分别对应于 一药剂瓶 5的软质封塞 133。
所述推杆套管 34是接设于内套管 33远离针头护套 10的一端， 所述注射推 杆 3 1 1置设于所述内套管 33与推杆套管 34内， 所述推杆套管 34末端具有一卡 扣端壁 341 ,卡扣端壁上形成提供注射推杆 31 1的安全弹扣 315穿设的通孔 342， 并以卡扣端壁 341提供压缩弹簧 310端部抵接的部位。
所述按压套管 35是套设于推杆套管 34外侧且伸入外套管 32内， 所述按压 套管 35可与外套管 32与推杆套管 34之间有限距离地轴向移动， 按压套管 35 远离针头护套 10的一端伸出外套管 32外侧且具有一按压端壁 351，于本较佳实 施例中， 所述按压套管 35内壁形成限位槽 353， 于推杆套管 34外壁形成限位凸 块 343 , 限位凸块 343位于限位槽 353中， 凭借限位槽 353限制按压套管 35相 对于推杆套管 34可轴向移动的距离， 所述按压端壁 351形成有贯孔 352 , 所述 贯孔 352分别相应于推杆套管 34的通孔 342， 所述贯孔 352可为由内朝外尺寸 渐缩的锥孔， 凭借推杆套管 34的卡扣端壁 341与按压套管 35的按压端壁 351 构成所述的安全卡扣构造， 使注射推杆 31 1的安全弹扣 315能穿过推杆套管 34 的通孔， 并穿设于按压套管 35的贯孔 352中， 安全弹扣 315的弹片 318凸出于 按压套管 35的按压端壁 351的贯孔 352外。
所述安全护套 4能套设于外套管 32与按压套管 35外侧， 并使安全护套 4 中的安全插销 41分别插入注射推杆 31 1的安全弹扣 315的弹片 318的插销孔 3 19 及伸入切槽 317中， 进而推挤锥形卡扣凸部 316扩张而卡扣于推杆套管 34的卡 扣端壁 341侧面， 而呈安全定位状态。
如图 2所示， 关于本发明注射器的使用情形， 本发明的注射器因是令针头 1 1被密封于设有封膜 12的针头护套 10内，可以避免针头 1 1外露而受到污染的 情形， 另以药剂套组 20包装药剂瓶 5， 对药剂瓶 5提供良好的安全方式， 当注 射器将针头组件 1、 内装有药剂瓶 5的药剂套组 2、 注射推进组件 3与安全护套 4组合后， 可凭借安全护套 4与注射推进组件 3间的安全防护机制， 确保注射器 的安全。
如图 7所示， 于使用时， 使用者必须先拆下安全护套 4， 使安全护套 4中的 安全插销 41脱离注射推杆 31 1的安全弹扣 315， 使注射器处于可注射的状态。 于注射时， 使用者仅须按下按压套管 35， 使按压套管 35推挤安全弹扣 315内缩 而能通过推杆套管 34的通孔 342， 解决卡扣状态， 如图 8所示， 接续利用压缩 弹簧 310的弹力， 先推顶注射推杆 31 1、 药剂瓶 5及内套管 33弹射， 使针头 1 1 的第二尖部 1 12刺入药剂瓶 5瓶端的软质封塞 51至瓶内， 而自动完成无气泡充 填药剂， 针头 1 1的第一尖部 1 1 1刺穿针头护套 10的软质封塞 133及刺入待注 射者的体内， 并在压缩弹簧 310持续提供弹力作用， 而推挤注射推杆 31 1将药 剂瓶 5内的药剂注入被注射者的身体内。
当本发明的注射器内装两个以上的药剂瓶以及相应数量的针头时， 可对被 注射者同时施打多种药剂， 而能应用于紧急注射的用途。
如图 9所示， 待注射完成后， 将注射器自被注射者身上取下， 另以安全护 套 4套设于针头护套 10外侧， 同时凭借安全插销 41将针头 1 1折弯， 并将折弯 的针头 1 1罩盖于安全护套 4内部， 让使用者及其周遭的人们避免被针头刺伤。
以上说明对本发明而言只是说明性的， 而非限制性的， 本领域普通技术人 员理解， 在不脱离权利要求所限定的精神和范围的情况下， 可作出许多修改、 变化或等效， 但都将落入本发明的保护范围之内。

Claims

权 利 要 求
1.一种注射器， 其特征在于， 其包含：
一针头组件， 其包含一中空的针头护套、 至少一个针头与一封膜， 针头护 套中形成一针头定位空间， 针头护套于针头定位空间的一端设有软质封塞形成 封闭端， 针头护套于针头定位空间的另一端形成一装配开口， 所述针头置入该 针头定位空间中， 所述封膜固定于针头护套的装配开口中， 使针头被密封于设 有封膜的针头护套内；
一药剂套组， 其包含一中空的药瓶套壳与一组设于药瓶套壳侧端的套壳端 盖， 用于容置至少一个药剂瓶， 且所述药剂瓶对应于针头；
一注射推进组件， 其包含一外护套组以及至少一注射推杆组， 外护套组套 设于药剂套组外侧且提供注射推杆组装设其中， 外护套组一端组接于针头护套 的装配开口处， 护套组远离针头护套的末端部具有一安全卡制构造， 注射推杆 组包含一注射推杆与一压缩弹簧， 所述注射推杆的一端穿过药剂套组的套壳端 盖而伸入药剂瓶中抵接活塞， 注射推杆的另一端套设压缩弹簧且末端具有一安 全弹扣， 压缩弹簧两端分别抵接注射推杆与外护套组， 使压缩弹簧能对注射推 杆提供朝向药剂瓶方向的弹力， 外护套组的安全卡扣构造能卡扣注射推杆的安 全弹扣；
一安全护套， 其包含一套体以及形成于套体内且相应注射推杆数量的安全 插销， 所述安全护套是可拆组地套设于外护套组的末端， 使安全插销能插入于 外护套组的安全卡扣构造与注射推杆的安全弹扣中， 将注射推杆予以卡扣固定。
2.根据权利要求 1所述的注射器， 其特征在于， 所述注射推杆包含有一第一 杆部、 一第二杆部与一位于第一杆部与第二杆部之间的抵接部， 第二杆部末端 形成所述安全弹扣， 压缩弹簧套设于注射推杆的第二杆部外侧， 注射推杆的第 一杆部穿过药剂套组的套壳端盖， 并能用于伸入药剂瓶中抵接瓶剂瓶中的活塞， 压缩弹簧两端分别抵接注射推杆的抵接部与外护套组的内侧壁上， 所述注射推 杆第二杆部末端形成一朝外尺寸渐缩的锥形卡扣凸部， 并具有一通过锥形卡扣 凸部的切槽与位于切槽外侧的弹片， 弹片中具有一连通切槽的插销孔， 构成所 述安全弹扣；
所述外护套组包含一外套管、 一内套管、 一推杆套管以及一按压套管， 其 中： 该外套管一端组接于针头护套的装配开口处， 该内套管是提供药剂套组装 设其中， 并一同装设于外套管内部；
该内套管相应于药剂瓶的软质封塞处形成穿孔， 内套管具有穿孔的端部接 触封膜；
该推杆套管接设于内套管远离针头护套一端， 注射推杆置设于内套管与推 杆套管内， 推杆套管末端具有一卡扣端壁， 卡扣端壁上形成提供注射推杆的安 全弹扣穿设的通孔， 卡扣端壁提供压缩弹簧端部抵接的部位；
该按压套管套设于推杆套管外侧且伸入外套管内， 按压套管能于外套管与 推杆套管之间有限距离地轴向移动， 按压套管远离针头护套的一端伸出外套管 外侧且具有一按压端壁， 按压端壁形成有贯孔， 贯孔相应于推杆套管的通孔， 推杆套管的卡扣端壁与按压套管的按压端壁构成所述安全卡扣构造， 使注射推 杆的安全弹扣能穿过推杆套管的通孔， 且穿设于按压套管的贯孔中， 安全弹扣 的弹片凸出于按压套管的按压端壁的贯孔外， 安全护套能套设于外套管与按压 套管外侧， 安全护套中的安全插销分别插入注射推杆的安全弹扣的弹片的插销 孔及伸入切槽中， 进而推挤锥形卡扣凸部扩张而卡扣于推杆套管的卡扣端壁侧 面。
3.根据权利要求 2所述的注射器， 其特征在于， 所述贯孔为由内朝外尺寸渐 缩的锥孔， 所述按压套管内壁形成限位槽， 在推杆套管外壁形成限位凸块， 限 位凸块位于限位槽中， 限位槽限制按压套管相对于推杆套管可轴向移动的距离。
4.根据权利要求 1至 3中任一项所述的注射器， 其特征在于， 所述针头两端 分别形成第一尖部与第二尖部， 于第一尖部与第二尖部之间具有一挡片， 针头 的第一尖部伸至软质封塞， 针头第二尖部朝封膜的方向；
所述针头护套包含一套壳、 一针头定位座与一套接环， 该套壳中形成所述 的针头定位空间， 套壳一端具有所述软质封塞而形成封闭端， 所述装配开口是 形成于套壳另一端， 针头定位座装设于套壳的针头定位空间中并可沿套壳轴向 位移， 针头定位座具有一端板部以及一成形于端板部外周缘朝一端延伸的环板 部， 针头定位座中形成一空间， 环板部朝向套壳的装配开口， 所述封膜设于套 壳的装配开口中， 针头于邻近第二尖部处具有一挡片， 针头第一尖部刺入套壳 的软质封塞中， 针头第二尖部穿过针头定位座， 挡片抵靠于针头定位座的端板 部， 所述套接环装设于套壳的装配开口内周壁上， 用于组接注射推进组件。
5.根据权利要求 4所述的注射器， 其特征在于， 所述针头组件具有两个以上 的针头， 这些针头平行排列地装设于针头护套内。
6.根据权利要求 1至 3中任一项所述的注射器， 其特征在于， 所述药剂套组 包含一药瓶套壳与一套壳端盖， 所述药瓶套壳提供所述药剂瓶装设其中， 药瓶 套壳具有一端相对应于所述药剂瓶的穿孔， 药瓶套壳的另一端为开口端， 套壳 端盖固设于药瓶套壳的开口端， 将所述药剂瓶封存固定于药剂套组内。
7.根据权利要求 4所述的注射器， 其特征在于， 所述药剂套组包含一药瓶套 壳与一套壳端盖， 所述药瓶套壳提供所述药剂瓶装设其中， 药瓶套壳具有一端 相对应于所述药剂瓶的穿孔， 药瓶套壳的另一端为开口端， 套壳端盖固设于药 瓶套壳的开口端， 将所述药剂瓶封存固定于药剂套组内。
8.根据权利要求 5所述的注射器， 其特征在于， 所述药剂套组包含一药瓶套 壳与一套壳端盖， 药瓶套壳提供所述药剂瓶装设其中， 药瓶套壳具有一端相对 应于所述药剂瓶的穿孔， 药瓶套壳的另一端为开口端， 套壳端盖固设于药瓶套 壳的开口端， 将所述药剂瓶封存固定于药剂套组内。
PCT/CN2013/000782 2013-06-28 2013-06-28 注射器 WO2014205604A1 (zh)

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