WO2009127077A1 - 一种预填式自动回缩的安全回缩的安全针具 - Google Patents

一种预填式自动回缩的安全回缩的安全针具 Download PDF

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Publication number
WO2009127077A1
WO2009127077A1 PCT/CN2008/000754 CN2008000754W WO2009127077A1 WO 2009127077 A1 WO2009127077 A1 WO 2009127077A1 CN 2008000754 W CN2008000754 W CN 2008000754W WO 2009127077 A1 WO2009127077 A1 WO 2009127077A1
Authority
WO
WIPO (PCT)
Prior art keywords
needle
prefilled
rod
retracting safety
safety needle
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2008/000754
Other languages
English (en)
French (fr)
Inventor
林李李
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bencha International Group Inc Virgin Islands
Original Assignee
Bencha International Group Inc Virgin Islands
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 Bencha International Group Inc Virgin Islands filed Critical Bencha International Group Inc Virgin Islands
Priority to US12/081,261 priority Critical patent/US20090259195A1/en
Priority to PCT/CN2008/000754 priority patent/WO2009127077A1/zh
Publication of WO2009127077A1 publication Critical patent/WO2009127077A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • A61M5/24—Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic
    • 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
    • A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
    • A61M5/3234—Fully automatic needle retraction, i.e. in which triggering of the needle does not require a deliberate action by the user
    • 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
    • A61M5/50—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 having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
    • 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
    • A61M2005/2403—Ampoule inserted into the ampoule holder
    • A61M2005/2407—Ampoule inserted into the ampoule holder from the rear
    • 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
    • A61M2005/31518—Piston or piston-rod constructions, e.g. connection of piston with piston-rod designed to reduce the overall size of an injection device, e.g. using flexible or pivotally connected chain-like rod members
    • 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
    • A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
    • A61M5/3234—Fully automatic needle retraction, i.e. in which triggering of the needle does not require a deliberate action by the user
    • A61M2005/3235—Fully automatic needle retraction, i.e. in which triggering of the needle does not require a deliberate action by the user triggered by radial deflection of the anchoring parts between needle mount and syringe barrel or needle housing, e.g. spreading of needle mount retaining hooks having slanted surfaces by engagement with correspondingly shaped surfaces on the piston at the end of an injection stroke
    • 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
    • A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
    • A61M5/3234—Fully automatic needle retraction, i.e. in which triggering of the needle does not require a deliberate action by the user
    • A61M2005/3235—Fully automatic needle retraction, i.e. in which triggering of the needle does not require a deliberate action by the user triggered by radial deflection of the anchoring parts between needle mount and syringe barrel or needle housing, e.g. spreading of needle mount retaining hooks having slanted surfaces by engagement with correspondingly shaped surfaces on the piston at the end of an injection stroke
    • A61M2005/3236—Trigger provided at the distal end, i.e. syringe end for mounting a needle
    • 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
    • A61M5/50—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 having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
    • A61M5/5066—Means for preventing re-use by disconnection of piston and piston-rod
    • A61M2005/5073—Means for preventing re-use by disconnection of piston and piston-rod by breaking or rupturing the connection parts
    • 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
    • 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
    • A61M5/28—Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle
    • 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
    • A61M5/3129—Syringe barrels
    • A61M5/3134—Syringe barrels characterised by constructional features of the distal end, i.e. end closest to the tip of the needle cannula
    • 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
    • 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
    • A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
    • A61M5/348—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub snap lock, i.e. upon axial displacement of needle 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
    • A61M5/50—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 having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
    • A61M5/5013—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe
    • A61M5/502—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking the piston

Definitions

  • the invention relates to a pre-filled automatic retracting safety needle, in particular to a bottle body with a pre-filled liquid medicine, which is pressed by a collapsible push rod to force the bottle body after the execution of the action.
  • the thimble seat is forward, and the retraction of the retractable push rod and the extension of the spring retract the needle seat and the bottle body into the syringe to reduce the needle stick injury and pollution, and protect the user's safety safety needle. .
  • the human body can be injected or blood drawn, and the bacteria in the body can be controlled or cleared, and various diseases and symptoms can be screened and treated for the convenience of treatment and management efficiency.
  • Pre-filled injection has become a very important development trend in the pharmaceutical industry due to the correctness of medication, the accuracy of dose, the anti-gambling nature of counterfeit drugs, and the differences in products.
  • the traditional pre-filled needles have been 30.
  • Another example is when a diabetic patient or a user who needs to apply the drug on his own time, such as in a field, such as an office, a restaurant, a hotel, etc., usually puts the needle in a general trash can after the application, even Discarded, the contaminated needle tip is exposed to the outside, and it is easy to cause needle stick damage to garbage cleaners or children who are picked up, causing extremely serious social health problems.
  • the medicine bottle is combined with the needle having the automatic retracting structure, and after the injection is completed, the needle holder and the medicine bottle can be automatically retracted into the syringe to prevent the infected needle tip from being exposed to the medical treatment after use. Person, cleaning staff, or any other third person causing a needle Damage.
  • the technical problem to be solved by the present invention is to provide a pre-filled automatic retracting safety needle for the deficiencies of the prior art, so that the needle holder and the medicine bottle can be automatically retracted after the needle device is injected and finished.
  • the needle holder and the medicine bottle can be automatically retracted after the needle device is injected and finished.
  • the syringe to prevent needle stick damage to medical personnel, cleaning personnel, or any other third person due to exposure of the infected needle tip after use.
  • a pre-filled automatic retracting safety needle comprising at least a syringe and a needle seat, and further comprising a bottle body
  • the bottle body can be pre-filled a liquid or powdered drug having a rubber stopper, a cover body and a movable plug body, wherein the plug body has a fixed member for fitting with the collapsible push rod;
  • the syringe barrel has a plurality of hooks for holding the needle seat And guiding the needle holder and the bottle body to retract into the syringe after the injection is completed;
  • a double-headed through-needle tube is formed at the center of the needle seat for piercing and injecting with the bottle body;
  • a spring is disposed between the needle holders
  • the needle holder has a rebounding force;
  • a collapsible push rod includes a rod body which is fitted to each other, one of which has a larger diameter than the other, and forms a cylinder at one
  • the utility model relates to a pre-filled automatic retracting safety needle, which comprises at least a syringe and a needle seat, the syringe has a plurality of buckles for holding the needle seat, and guiding the needle holder to retract after the injection is completed Inside the needle barrel; a double-headed through-needle tube is formed at the center of the needle seat, and a stopper formed at one end is sleeved with a rubber ring; a spring is disposed between the needle holders, and the needle seat has a rebounding power;
  • the collapsible push rod comprises a rod body which is fitted to each other, one of which has a larger diameter than the other, and one end of the tube body forms a rubber head which can be condensed into the same tube body during operation.
  • the end portion of the needle holder of the present invention forms a plurality of U-shaped slides for sliding movement of a plurality of hooks at the ends of the needle barrel;
  • the spring is disposed at the circumference of the needle seat by a spring, and is retractably pushed
  • the rod forces the bottle body and the needle seat to push forward against the thimble seat, so that the spring acts to drive the buckle hook to move in each slide of the needle seat to complete the automatic retracting action.
  • the invention provides a bottle body prefilled with a liquid medicine which can be accommodated in a safety syringe with automatic retraction, the front rod of the retractable push rod is retracted into the rear rod, and the rear rod has a convex portion It is embedded in the syringe to complete the integral recovery.
  • FIG. 1 is a perspective exploded view of a pre-filled automatic retracting safety needle according to the present invention.
  • Fig. 2 is a schematic view showing the needle assembly of a pre-filled automatic retracting safety needle according to the present invention.
  • Fig. 3 is a cross-sectional view showing the retracting push rod of a pre-filled automatic retracting safety needle according to the present invention.
  • Figure 4-1 is a cross-sectional view showing the combination of a bottle body and a needle holder of a pre-filled automatic retracting safety needle according to the present invention.
  • Fig. 4-2 is a schematic view showing the use of a pre-filled automatic retracting safety needle according to the present invention.
  • Fig. 4-3 is a schematic view showing the needle seat and the hook action of a pre-filled automatic retracting safety needle according to the present invention.
  • Figure 5 is a schematic illustration of a collapsible push rod assembly of a pre-filled self-retracting safety needle of the present invention.
  • Fig. 6 is a schematic view showing another embodiment of a retractable push rod of a prefilled automatic retracting safety needle according to the present invention.
  • Fig. 7 is a schematic view showing the retractable push rod retracting action of a pre-filled automatic retracting safety needle according to the present invention.
  • Figure 8 is a schematic view showing the retracting action of a pre-filled automatic retracting safety needle according to the present invention.
  • Figure 9 is a schematic view showing the retraction of a pre-filled automatic retracting safety needle according to the present invention.
  • Figure 10 is a schematic view showing another embodiment of the retractable push rod retraction of a prefilled automatic retracting safety needle according to the present invention.
  • Fig. 11 is a schematic view showing an embodiment of a needle tube of a needle holder of a prefilled automatic retracting safety needle.
  • Figure 12 is a schematic view showing another embodiment of the needle tube of the needle holder of the prefilled automatic retracting safety needle of the present invention.
  • the safety needle of the pre-filled automatic retracting device of the present invention is a bottle body pre-filled with a liquid medicine, which can be accommodated in a safety syringe with automatic retraction, and includes at least: a needle seat connecting the needle tube 130 13 and a rubber ring 14, a cover 10, a syringe 11, a bottle body 15 prefilled with a liquid medicine, and a retractable push rod 16 accommodated in the syringe 11, the syringe 11 can hold the
  • the needle holder 13 guides the needle holder 13 after the application is completed and the bottle body 15 is retracted in the opposite direction of the injection by an annular spring 12.
  • the needle holder 13 accommodates the needle tube 130 which is formed at both ends and penetrates the center portion of the needle holder 13.
  • a plurality of positioning grooves 131, a ramp 132, a rotary slide 133 and a penetrating portion are provided at a suitable position of the needle holder 13 end.
  • the slide 134 is formed into a substantially ⁇ -shaped retracting action slide, and the positioning groove 131 is buckled with the hook 110 formed at one end of the syringe 11 to be positioned in the positioning groove 131.
  • the hook 110 of the syringe 11 forms an approximate U-shaped slide movement along the positioning groove 131, the ramp 132, the rotary slide 133 and the through slide 134, so that the needle holder 13 is directed toward the injection.
  • the blocking piece 135 Reversing in the opposite direction, and forming a disc-shaped blocking piece 135 at the other end of the needle holder 13, the blocking piece 135 having an annular concave apron groove 1350 for the apron 14 to be placed therein, which provides the spring 12 when retracting It is used for abutting against the surrounding wall surface of the inner cylinder 112 of the syringe 11.
  • the syringe 11 is formed in a hollow shape and has an ear strap 111 at one end, and a plurality of hooks 110 having a proper deformation margin and facing the center are provided at one end.
  • the hook 110 is stably buckled to the needle seat.
  • the user applies a force to the needle holder 13 to press the hook 110 to release the buckle between the needle holder 13 and the hook 110 to cause a retracting operation.
  • FIG. 2 Please refer to FIG. 2, FIG. 3, FIG. 4-1, FIG. 4-2 and FIG. 4-3 at the same time, which is a bottle body and a retractable type of a pre-filled automatic retracting safety needle according to the present invention.
  • the push rod is combined with the schematic diagram and the operation diagram.
  • the bottle body 15 which can be pre-filled with the liquid medicine is a hollow tube body, and a rubber plug 150 and a hollow jaw type cover body 151 are opened at one end opening, and the other end is inserted into one end.
  • the tubular body forms a cylinder 1600 at a central portion of one end for screwing with the fixed member 1520 of the plug body 152 of the bottle body 15, and the rear rod 161 is approximately hollow tube body, and is formed on the longitudinal wall surface of the tubular body
  • the annular boss portion 1610 and the plurality of stoppers 1611 are for snapping with the syringe 11.
  • the column 1600 of the front rod 160 at the end of the retractable push rod 16 is fixed in the fixed part 1520 of the plug body 152 in the bottle body 15, and the retractable push rod 16 of the fixed bottle body 15 is fixed.
  • the cartridge is inserted into the inner cylinder 112 of the syringe 11 to advance forwardly, and the rubber stopper 150 of the bottle body 15 is pierced into the lower tip portion 1301 of the needle tube 130, so that the collapsible push rod 16 can be advanced to advance in the bottle body 15.
  • the liquid medicine enters the human body through the needle tube 130; however, when the injection is completed, the retractable push rod 16 is urged in the direction of the needle holder 13 to make the hook 110 of the positioning groove 131 of the needle holder 13 buckle.
  • the 13-end of the needle seat forms a ramp 132, a rotating slide 133 and a through slide of an approximate U-shaped slide. Movement in 134 causes the spring 12 to stretch, causing the needle holder 13 and the bottle 15 to retract in a direction opposite to the direction of injection.
  • FIG. 5 and FIG. 6 is a schematic diagram of a combination of a retractable push rod of a pre-filled automatic retracting safety needle according to the present invention.
  • the front rod 160 of the retractable push rod 16 has a diameter smaller than that.
  • the diameter of the rear rod 161 forms an annular rib portion 1601 at one end of the front rod 160, and the rear rod 161 forms an annular concave rib portion 1611 at the inner edge of one end.
  • the reduction push rod 16 is a plastic material having a suitable deformation margin, so that the rib portion 1601 can be snapped into the concave rib portion 1611, and when the retractable push rod 16 is actuated, the front portion rod 160 can be slid into the rear.
  • the diameter of the front rod 160' of the retractable push rod 16' may be larger than the diameter of the rear rod 16', and the annular rib portion 160 is formed at one end of the front rod 160'.
  • the rear rod 161' forms an annular rib 1611' at the inner edge of one end.
  • FIG. 7 , FIG. 8 and FIG. 9 are schematic diagrams of the retractable push rod action of the pre-filled automatic retracting safety needle device according to the present invention, which is capable of being retractable when the injection is completed.
  • the push rod 16 is urged in the direction of the needle holder 13 so that the hook 110 that is fastened to the positioning groove 131 of the needle seat 13 is slightly pulled off from the positioning groove 131 on both sides, and the retractable push rod 16 is forced forward by the forward push.
  • the rib portion 1601 of the front rod 160 is disengaged from the concave rib portion 1611 of the rear rod 161 toward one end, and the needle holder 13, the bottle body 15 and the front rod 160 are retracted in the opposite direction of the injection due to the proper tension of the spring 12.
  • the protrusion 1610 formed at the circumference of the rear rod 161 is engaged with the concave rib 1120 at the end of the inner cylinder 112 of the barrel 11, and the stopper 1612 formed at the circumference of the rear rod 161.
  • FIG. 10 it is a schematic diagram of another embodiment of a pre-filled automatic retracting safety needle according to the present invention, wherein the front rod 160' of the retractable push rod 16 has a larger diameter than the rear rod 16 ⁇ .
  • Diameter, and the syringe 1 forms a hollow column-shaped blocking member 113' on one side of the ear stem 11 and a concave rib portion 114' at the inner end of the open end.
  • the concave rib portion 160 of the front section rod 160' The rib 1611' of the rear rod 16 is disengaged, and the needle holder 13, the bottle body 15, and the front rod 160' are retracted in the syringe in the opposite direction of the injection by the expansion of the spring 12;
  • the push plate 1613' is retracted in the needle holder 13, the bottle body 15, and the front rod 160', the push plate 1613' is engaged in the concave rib portion 114' at the inner circumference of the stopper 113' of the syringe 1 And form a hold.
  • FIG. 11 is a schematic view of a needle holder embodiment of a pre-filled automatic retracting safety needle.
  • the needle tube 130 of the needle holder 13 extends through the center of the needle holder 13 .
  • the needle tube 130 can be implemented by both, one of the needle tubes 130' is received in one end of the needle holder 13, and the other needle tube 130'' is received at the center of the other end of the needle holder 13' .

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Description

一种预填式自动回缩的安全针具 技术领域
本发明涉及一种预填式自动回縮的安全针具，尤指一种附有经预先填 装药液的瓶体于施打动作完成后，经可缩式推杆推压迫使瓶体抵顶针座向 前，再藉由可縮式推杆的回缩及弹簧的伸张，使针座、瓶体回缩至针筒中， 以降低针扎伤害及污染， 并保护使用者安全的安全针具。
背景技术
按针具的使用，可对人体施以注射或血液抽取， 并可将体内中的病菌 控制或清除及各种病症与症状作筛检与治疗， 为了治疗上使用的方便性、 管理的效率性、 用药的正确性、 剂量的准确性、 伪药的防赌性、 产品的差 异性等考虑， 预填式针剂已成为医药产业非常重要的发展趋势，传统型的 预填式针具已有 30多年历史，虽然皆采用一次使用完毕后即抛弃的针筒， 但使用后已污染的针尖仍暴露在外，经由已污染的针具感染的血液病原性 疾病如 AIDS、 B型、 C型肝炎等高达 20余种， 且在针扎事件发生后的后 续追踪处理上也都必需付出相当大的经济及社会成本。又如当糖尿病患者 或需定时自行施打药物的使用者， 如在外地， 如办公室、 餐厅、 旅馆等场 地施打时，于施打完毕后通常均将针具弃置于一般垃圾桶，甚至任意丢弃， 其使用后污染的针尖均暴露于外，极易对垃圾清洁人员或拾获的儿童产生 针扎伤害， 造成极严重的社会健康问题。
缘此， 发明人积极深研安全针具的设计， 除使用的方便性外， 更以顾 及使用者、清洁人员甚至任何可能意外触及者的健康安全作为设计考虑的 主要方向，使预先装填药液的药瓶结合于具有自动回缩结构的针具中， 而 于施打注射完成后， 可将针座及药瓶自动回縮于针筒中， 以防止使用后已 感染的针尖因外露而对医疗人员、清洁人员， 或任何其它第三者造成针扎 伤害。
发明内容
本发明所要解决的技术问题是，针对现有技术的不足，提供一种预填 式自动回縮的安全针具， 使该针具施打注射完成后， 可将针座及药瓶自动 回缩于针筒中， 以防止使用后已感染的针尖因外露而对医疗人员、清洁人 员， 或任何其它第三者造成针扎伤害。
为解决上述技术问题， 本发明所采用的技术方案是： 一种预填式自动 回缩的安全针具， 至少包括一针筒及一针座， 还包括一瓶体， 该瓶体可预 先装填液状或粉状药物， 并具有胶塞、 盖体及可动式塞体， 其中塞体具有 一被固定件供与可缩式推杆嵌合； 该针筒具有若干扣钩供扣持该针座， 并 于注射完成后引导该针座与瓶体回缩至针筒内；该针座中心处设置双头形 成尖端的贯穿针管， 供与瓶体的穿剌及注射； 一弹簧设于针座间， 供针座 具有回弹的动力； 一可缩式推杆包含有两者相互嵌合的杆体，其一者管径 较大于另一者， 且于一端形成一柱体， 于动作时能缩合为同一管体。
一种预填式自动回缩的安全针具， 至少包括一针筒及一针座， 该针筒 具有若干扣钩供扣持该针座， 并于注射完成后引导该针座回缩至该针筒 内； 该针座中心处设置双头形成尖端的贯穿针管， 且一端所形成的挡片套 设一胶圈； 一弹簧设于针座间， 供针座具有回弹的动力； 以及一可缩式推 杆， 其包含有两者相互嵌合的杆体， 其一者管径较大于另一者， 且一者管 体的一端形成一橡胶头， 于动作时能缩合为同一管体。
与现有技术相比， 本发明的有益效果为：
本发明的针座端部形成若干 U型滑道，以供针筒端部的若干扣钩于其 中作滑移动作； 其藉由一弹簧设于针座的环围处， 经可缩式推杆迫使瓶体 及针座抵顶针座向前推动， 使弹簧动作以带动扣钩于针座各滑道中动作， 以完成自动回缩的动作。 本发明提供一种预先装填药液的瓶体可容置于具自动回缩的安全针 筒中，该可缩式推杆的前段杆回缩至后段杆中，而后段杆具有凸起部使其 嵌卡于针筒内， 以完成一体回收。
有关本发明的详细说明及技术内容现配合图式说明如下：
附图说明
图 1 : 系本发明一种预填式自动回缩的安全针具的立体零件分解示意 图。
图 2 : 系本发明一种预填式自动回缩的安全针具的针具结合平面示意 图。
图 3 : 系本发明一种预填式自动回缩的安全针具的内縮推杆旋合于瓶 体剖面示意图。
图 4-1 : 系本发明一种预填式自动回縮的安全针具的瓶体与针座结合 剖面示意图。
图 4-2 : 系本发明一种预填式自动回缩的安全针具的使用动作示意 图。
图 4-3 : 系本发明一种预填式自动回缩的安全针具的针座与扣钩动作 示意图。
图 5 : 系本发明一种预填式自动回缩的安全针具的可縮式推杆结合示 意图。
图 6 : 系本发明一种预填式自动回缩的安全针具的可缩式推杆另一实 施例示意图。
图 7 : 系本发明一种预填式自动回缩的安全针具的可缩式推杆回缩动 作示意图。
图 8 : 系本发明一种预填式自动回缩的安全针具的回缩动作示意图。 图 9 : 系本发明一种预填式自动回縮的安全针具的回縮完成示意图。 图 10: 系本发明一种预填式自动回缩的安全针具的可缩式推杆内缩 完成另一实施例示意图。
图 11 ·· 系本发明一种预填式自动回缩的安全针具的针座的针管实施 例示意图。
图 12: 系本发明一种预填式自动回缩的安全针具的针座的针管另一 实施例示意图。
标号说明：
护盖 10
针筒 11、 11'
扣钩 110
耳把 111、 111'
内筒 112
阻挡件 113'
弹簧 12
针座 13、 13'
针管 130、 130，、 130，，
上尖部 1300、 1300，
下尖部 1301、 1300'，
定位槽 130
坡道 132、 132'
旋转滑道 133、 133'
贯穿滑道 134、 134'
挡片 135、 135'
胶圈槽 1350、 1350' 胶塞 150
盖体 151
塞体 152
被固定件 1520
可缩式推杆 16、 16'
前段杆 160、 160'
凸肋部 1601、 1611，
柱体 1600、 1600'
后段杆 161、 161'
凹肋部 1611、 1601，、 114，、 1120
凸起部 1610
挡块 1612
推板 1613，
具体实施方式
首先， 请参阅图 1所示： 系本发明各部位零件立体图及组合示意图。 其中本发明一种预填式自动回缩的安全针具为一种预先装填药液的瓶体 可容置于具自动回缩的安全针筒中，其至少包括有： 一连接针管 130的针 座 13及其胶圈 14、 一护盖 10、 一针筒 11、 一预先装填药液的瓶体 15以 及一容置于针筒 11中的可缩式推杆 16， 针筒 11可扣持该针座 13， 并藉 由一环形弹簧 12引导施打完毕后的针座 13与瓶体 15朝注射反方向回缩。
然， 该针座 13容纳两端型成尖部并贯穿针座 13中心部的针管 130， 于针座 13—端的适当位置上设有若干定位槽 131、 坡道 132、 回转滑道 133及贯穿滑道 134， 其形成近似 ϋ型回缩动作滑道， 而定位槽 131系用 与针筒 11一端部所形成的扣钩 110形成卡扣，使其定位于定位槽 131内，
5 当弹簧 12进一步被压縮时，针筒 11的扣钩 110沿着定位槽 131、坡道 132、 回转滑道 133及贯穿滑道 134形成近似 U型滑道移动， 而使针座 13朝注 射反方向回缩， 而于针座 13另一端则形成一圆盘状的挡片 135， 该挡片 135具有环形凹状的胶圈槽 1350供胶圈 14套设其中， 其提供弹簧 12回 缩时与针筒 11的内筒 112环围壁面抵接之用。
又， 该针筒 11形成中空状且一端具有耳把 111， 又于一端设有若干 个具适当变形裕度且面向圆心的扣钩 110， 在未使用时， 扣钩 110稳定卡 扣于针座 13的定位槽 131内， 待施打完毕后，使用者再向针座 13方向施 力， 压迫扣钩 110使针座 13与扣钩 110间的卡扣解除而产生回缩动作。
再请同时参阅图 2、 图 3、 图 4-1、 图 4- 2及图 4- 3所示， 系为本发 明一种预填式自动回缩的安全针具的瓶体与可缩式推杆结合示意图与使 用动作示意图， 其中可预先填装药液的瓶体 15为中空管体， 于一端开口 盖设一胶塞 150及一中空 Π型盖体 151 , 另一端则穿塞一端具有被固定件 1520的塞体 152，供可缩式推杆 16旋合于其中，而可缩式推杆 16具有前 段杆 160与后段杆 161， 该前段杆 160系一侧开口的中空管体， 于一端中 心部形成柱体 1600， 以供与瓶体 15的塞体 152的被固定件 1520旋合对 应， 该后段杆 161 系近似中空管体， 于管体环围纵壁面形成环状凸起部 1610及若干挡块 1611， 以供与针筒 11卡扣。
而于使用时，该可缩式推杆 16的前段杆 160—端的柱体 1600固定于 瓶体 15中塞体 152的被固定件 1520中， 并将固定瓶体 15的可缩式推杆 16容置于针筒 11的内筒 112中向前推进， 经瓶体 15的胶塞 150穿刺于 针管 130的下尖部 1301， 使可缩式推杆 16可向前推进将瓶体 15中的药 液经由针管 130 进入人体中； 然， 于施打注射完毕时， 再将可缩式推杆 16向针座 13方向施力推进， 使卡扣于针座 13定位槽 131的扣钩 110顺 着针座 13—端形成近似 U型滑道的坡道 132、 旋转滑道 133及贯穿滑道 134中移动， 导致弹簧 12伸张， 带动使针座 13及瓶体 15向与注射方向 相反的方向回縮。
请再参阅图 5及图 6所示，系为本发明一种预填式自动回缩的安全针 具的可縮式推杆结合实施示意图， 该可缩式推杆 16的前段杆 160直径小 于后段杆 161的直径， 于前段杆 160的一端环围处形成环状凸肋部 1601， 而后段杆 161于一端的内缘处形成环状凹肋部 1611， 其于组构时， 该可 缩式推杆 16系为具有适当变形裕度的塑料材料，使凸肋部 1601可卡扣于 凹肋部 1611中，而于可缩式推杆 16动作时， 该前段杆 160可滑入后段杆 161中；
又， 另一实施例， 该可缩式推杆 16'的前段杆 160'的直径可大于后段 杆 16Γ的直径， 其于前段杆 160'的一端环围处形成环状凹肋部 160 ， 而后段杆 161 '于一端的内缘处形成环状凸肋部 1611'， 其于组构时， 该使 前段杆 160'的凹肋部 160 可卡扣于后段杆 16 的凸肋部 161 Γ中，另于 可缩式推杆 16'动作时， 该前段杆 160'可滑落于后段杆 161 '外环围上。
请再参阅图 7、 图 8及图 9所示， 系为本发明一种预填式自动回缩的 安全针具的可缩式推杆动作示意图， 于施打注射完毕时， 将可缩式推杆 16向针座 13方向施力推进， 使卡扣于针座 13定位槽 131的扣钩 110向 两侧微张脱离定位槽 131， 同时可缩式推杆 16经向前迫使抵顶， 使前段 杆 160的凸肋部 1601向一端脱离后段杆 161的凹肋部 1611，并因弹簧 12 具有适当张力， 将针座 13、 瓶体 15与前段杆 160向注射的反方向缩回， 而于后段杆 161环围处形成的凸起部 1610卡合于针筒 11内筒 112—端开 口处的凹肋部 1120中，另于后段杆 161环围处形成的挡块 1612系抵顶于 耳把 111的一侧， 以阻挡后段杆 161再向前推进； - 而经后段杆 161卡合于针筒 11中， 该弹簧 12将针座 13、 瓶体 15与 前段杆 160回缩留置于针筒 11中， 完成一种匣式的安全针具。 再请参阅图 10所示， 系为本发明一种预填式自动回缩的安全针具的 另一实施例示意图， 其中该可缩式推杆 16的前段杆 160'直径大于后段杆 16Γ直径， 而针筒 1 于耳把 11 一侧形成中空柱状的阻挡件 113'且于 开口端内部环围处形成凹肋部 114'， 于注射完毕时， 该前段杆 160'的凹 肋部 160 脱离后段杆 16 的凸肋部 1611'， 经弹簧 12的扩张而将针座 13、瓶体 15及前段杆 160'朝注射反方向回縮于针筒中；另，该后段杆 16 一端的推板 1613'于针座 13、瓶体 15及前段杆 160'回缩时，该推板 1613' 卡合于针筒 1 Γ的阻挡件 113'内部环围处的凹肋部 114'中， 而形成固持。
再请同时参阅图 11、 图 12所示， 系为本发明一种预填式自动回缩的 安全针具的针座实施例示意图，该针座 13的针管 130贯穿针座 13中心部， 其中该针管 130可为二者所实施， 其一者针管 130'容置于针座 13的一端 部中， 另一者针管 130' '则容置于针座 13'另一端挡片 135'中心处。

Claims

权 利 要 求
1. 一种预填式自动回缩的安全针具， 至少包括一针筒及一针座， 其 特征在于： 还包括一瓶体， 该瓶体可预先装填液状或粉状药物， 并具有胶 塞、 盖体及可动式塞体， 其中塞体具有一被固定件供与可缩式推杆嵌合； 该针筒具有若干扣钩供扣持该针座，并于注射完成后引导该针座与瓶体回 缩至针筒内; 该针座中心处设置双头形成尖端的贯穿针管， 供与瓶体的穿 剌及注射； 一弹簧设于针座间， 供针座具有回弹的动力； 一可缩式推杆包 含有两者相互嵌合的杆体，其一者管径较大于另一者，且于一端形成一柱 体， 于动作时能缩合为同一管体。
2. 根据权利要求 1所述的一种预填式自动回缩的安全针具， 其特征 在于， 该针座的针管可为二者分别设于针座的二端部所实施。
3. 根据权利要求 1所述的一种预填式自动回缩的安全针具， 其特征 在于， 该针座于端部形成若干 U型凹槽滑道。
4. 根据权利要求 1所述的一种预填式自动回缩的安全针具， 其特征 在于， 该塞体的被固定件为螺旋型或锥扣部。
5. 根据权利要求 1所述的一种预填式自动回缩的安全针具， 其特征 在于， 该可缩式推杆为前段杆外缘的直径小于后段杆内缘的直径所实施。
6. 根据权利要求 5所述的一种预填式自动回缩的安全针具， 其特征 在于， 该前段杆可于后段杆内缘滑移。
7. 根据权利要求 1所述的一种预填式自动回缩的安全针具， 其特征 在于， 该可缩式推杆为前段杆的内缘直径大于后段杆的外缘直径所实施。
8. 根据权利要求 7所述的一种预填式自动回缩的安全针具， 其特征 在于， 该前段杆可于后段杆外缘滑移。
9. 裉据权利要求 1所述的一种预填式自动回缩的安全针具， 其特征 在于， 该针筒于内缘形成凹肋部。
10.根据权利要求 1所述的一种预填式自动回缩的安全针具，其特征 在于， 该针筒于端部形成阻挡件。
11. 根据权利要求 10所述的一种预填式自动回缩的安全针具， 其特 征在于， 该阻挡件于幵口端内缘形成凹肋部。
12.根据权利要求 1所述的一种预填式自动回缩的安全针具，其特征 在于， 该可缩式推杆的柱体为螺旋型或锥扣部所实施。
13. 根据权利要求 1所述的一种预填式自动回缩的安全针具， 其特征 在于， 该瓶体为单腔式或双腔式所实施。
14. 一种预填式自动回缩的安全针具， 至少包括一针筒及一针座， 其 特征在于： 该针筒具有若干扣钩供扣持该针座， 并于注射完成后引导该针 座回缩至该针筒内； 该针座中心处设置双头形成尖端的贯穿针管，且一端 所形成的挡片套设一胶圈； 一弹簧设于针座间， 供针座具有回弹的动力； 以及一可缩式推杆， 其包含有两者相互嵌合的杆体， 其一者管径较大于另 一者， 且一者管体的一端形成一橡胶头， 于动作时能缩合为同一管体。
15. 根据权利要求 14所述的一种预填式自动回缩的安全针具， 其特 征在于， 该针座的针管可为二者分别设于针座的二端部所实施。
16. 根据权利要求 14所述的一种预填式自动回缩的安全针具， 其特 征在于， 该针座于端部形成若干 U型凹槽滑道。
17. 根据权利要求 14所述的一种预填式自动回缩的安全针具， 其特 征在于， 该可缩式推杆为前段杆外缘的直径小于后段杆内缘的直径所实 施。
18. 根据权利要求 17所述的一种预填式自动回縮的安全针具， 其特 征在于， 该前段杆可于后段杆内缘滑移。
19. 根据权利要求 14所述的一种预填式自动回缩的安全针具， 其特 征在于， 该可缩式推杆为前段杆的内缘直径大于后段杆的外缘直径所实 施。
20. 根据权利要求 19所述的一种预填式自动回缩的安全针具， 其特 征在于， 该前段杆可于后段杆外缘滑移。
21 . 根据权利要求 14所述的一种预填式自动回縮的安全针具， 其特 征在于， 该针筒于内缘形成凹肋部。
22. 根据权利要求 14所述的一种预填式自动回縮的安全针具， 其特 征在于， 该针筒于端部形成阻挡件。
23. 根据权利要求 22所述的一种预填式自动回缩的安全针具， 其特 征在于， 该阻挡件于开口端内缘形成凹肋部。
PCT/CN2008/000754 2008-04-14 2008-04-14 一种预填式自动回缩的安全回缩的安全针具 Ceased WO2009127077A1 (zh)

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