WO2019010689A1 - 安全针筒 - Google Patents

安全针筒 Download PDF

Info

Publication number
WO2019010689A1
WO2019010689A1 PCT/CN2017/092891 CN2017092891W WO2019010689A1 WO 2019010689 A1 WO2019010689 A1 WO 2019010689A1 CN 2017092891 W CN2017092891 W CN 2017092891W WO 2019010689 A1 WO2019010689 A1 WO 2019010689A1
Authority
WO
WIPO (PCT)
Prior art keywords
sleeve
outer sleeve
inner sleeve
end opening
positioning portion
Prior art date
Application number
PCT/CN2017/092891
Other languages
English (en)
French (fr)
Inventor
洪志华
Original Assignee
洪志华
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 洪志华 filed Critical 洪志华
Priority to US16/631,036 priority Critical patent/US20210330886A1/en
Priority to CN201780093193.1A priority patent/CN110997047A/zh
Priority to EP17917529.4A priority patent/EP3653245A4/en
Priority to PCT/CN2017/092891 priority patent/WO2019010689A1/zh
Publication of WO2019010689A1 publication Critical patent/WO2019010689A1/zh

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31501—Means for blocking or restricting the movement of the rod or piston
    • A61M5/31505—Integral with the syringe barrel, i.e. connected to the barrel so as to make up a single complete piece or unit
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3245—Constructional features thereof, e.g. to improve manipulation or functioning
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150015—Source of blood
    • A61B5/15003—Source of blood for venous or arterial blood
    • 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
    • A61M5/31—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
    • A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
    • A61M5/31576—Constructional features or modes of drive mechanisms for piston rods
    • A61M5/31578—Constructional features or modes of drive mechanisms for piston rods based on axial translation, i.e. components directly operatively associated and axially moved with plunger rod
    • A61M5/3158—Constructional features or modes of drive mechanisms for piston rods based on axial translation, i.e. components directly operatively associated and axially moved with plunger rod performed by axially moving actuator operated by user, e.g. an injection button
    • 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
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
    • A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
    • A61B5/150633—Protective sleeves which are axially extensible, e.g. sleeves connected to, or integrated in, the piercing or driving device; pivotable protective sleeves
    • A61B5/150641—Protective sleeves which are axially extensible, e.g. sleeves connected to, or integrated in, the piercing or driving device; pivotable protective sleeves comprising means to impede repositioning of protection sleeve from covering to uncovering position
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150885—Preventing re-use
    • A61B5/150916—Preventing re-use by blocking components, e.g. piston, driving device or fluid passageway
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/153—Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
    • 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
    • A61M2005/3131—Syringe barrels specially adapted for improving sealing or sliding
    • 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
    • A61M5/31501—Means for blocking or restricting the movement of the rod or piston
    • A61M5/31505—Integral with the syringe barrel, i.e. connected to the barrel so as to make up a single complete piece or unit
    • A61M2005/31506—Integral with the syringe barrel, i.e. connected to the barrel so as to make up a single complete piece or unit formed as a single piece, e.g. moulded
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3245—Constructional features thereof, e.g. to improve manipulation or functioning
    • A61M2005/3247—Means to impede repositioning of protection sleeve from needle covering to needle uncovering position
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3245—Constructional features thereof, e.g. to improve manipulation or functioning
    • A61M2005/3247—Means to impede repositioning of protection sleeve from needle covering to needle uncovering position
    • A61M2005/3249—Means to disalign the needle tip and the distal needle passage of a needle protection sleeve
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/02—General characteristics of the apparatus characterised by a particular materials
    • A61M2205/0216—Materials providing elastic properties, e.g. for facilitating deformation and avoid breaking
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/27—General characteristics of the apparatus preventing use
    • A61M2205/273—General characteristics of the apparatus preventing use preventing reuse, e.g. of disposables
    • 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
    • A61M5/281—Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle using emptying means to expel or eject media, e.g. pistons, deformation of the ampoule, or telescoping of the 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
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3275—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel being connected to the needle hub or syringe by radially deflectable members, e.g. longitudinal slats, cords or bands
    • 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
    • A61M5/5086—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 for indicating if defective, used, tampered with or unsterile

Definitions

  • the invention relates to a safety syringe, in particular to a safety syringe which is simple in structure and easy to assemble.
  • a syringe is an instrument used to inject a liquid such as a liquid, a blood, or a nutrient solution into a human body in conjunction with a needle.
  • a liquid such as a liquid, a blood, or a nutrient solution
  • the needle After the injection is completed, since the needle is already contaminated with blood from the human body, the used needle must be safely treated to prevent the medical staff or others from being stabbed by the needle.
  • the needle was inserted into a needle cover for storage. However, during the insertion process, the medical staff may accidentally penetrate the medical treatment because of carelessness or other external force pushing. The hand of the person, which in turn increases the risk of accidental infection of the medical staff, has led to the so-called safety syringe to reduce the chance of the medical staff directly touching the needle by hand.
  • the main object of the present invention is to provide a safety syringe which is simple in structure and easy to assemble to increase the convenience in use.
  • the present invention provides a safety syringe comprising an outer sleeve, an inner sleeve, and a piston rod.
  • the outer sleeve has a front end opening and a first rear end opening, and the inner wall of the rear end of the outer sleeve has a first annular flange, a second annular flange and a receiving groove, the first The second annular flange is spaced apart from each other, and the receiving groove is located between the first and second annular flanges;
  • the front end of the inner sleeve has a needle mounting portion and is adjacent to the needle mounting portion a positioning portion, the rear end of the inner sleeve has a second rear end opening, the inner sleeve is inserted through the first rear end opening of the outer sleeve to the outer sleeve and can be in a first position and a The second position is actuated relative to the outer sleeve when the inner slee
  • the positioning portion of the inner sleeve is located in the receiving groove of the outer sleeve, and the inner sleeve is The positioning portion is blocked by the first and second annular flanges of the outer sleeve such that the needle mounting portion of the inner sleeve is completely located within the outer sleeve; the piston rod passes the second rear of the inner sleeve The end opening is threaded through the inner sleeve and is displaceable relative to the inner sleeve.
  • the positioning portion of the inner sleeve when the inner sleeve is in a first position, the positioning portion of the inner sleeve is located between the front end opening of the outer sleeve and the second annular flange of the outer sleeve, so that the inner portion The sleeve is partially exposed to the outside of the outer sleeve via the front end opening of the outer sleeve by an external force, and a needle provided in the needle mounting portion of the inner sleeve is injected.
  • the positioning portion of the inner sleeve When the inner sleeve is moved from the first position to the second position, the positioning portion of the inner sleeve is located in the receiving groove of the outer sleeve, and the positioning portion of the inner sleeve is covered by the outer sleeve.
  • the first and second annular flanges are blocked such that the range of movement of the inner sleeve is limited to between the first and second annular flanges of the outer sleeve, at which time the needle of the inner sleeve
  • the mounting portion is retained within the outer sleeve along with the needle to increase safety after injection.
  • the inner diameter of the second annular flange of the outer sleeve gradually increases away from the receiving groove of the outer sleeve, so that the inner sleeve moves from the first position to the second position.
  • the positioning portion is allowed to pass through the second annular flange of the outer sleeve with less effort during the process.
  • the first rear end opening of the outer sleeve abuts the first annular flange of the outer sleeve, and the inner diameter of the first rear end opening of the outer sleeve faces away from the first outer sleeve
  • the direction of the annular flange is gradually increased such that the inner sleeve can pass the positioning portion through the first annular flange of the outer sleeve less effort during assembly into the outer sleeve.
  • the axial length of the receiving groove of the outer sleeve is greater than the axial length of the positioning portion of the inner sleeve.
  • the positioning portion of the inner sleeve may be formed by four protrusions arranged at equal angular intervals around the axial direction of the inner sleeve, or the positioning portion of the inner sleeve may also be a single ring. Formed by a bump.
  • FIG. 1 is a plan sectional view showing a safety syringe according to a first embodiment of the present invention.
  • Fig. 2 is a plan sectional view showing the inner and outer sleeves provided by the safety syringe of the first embodiment of the present invention, mainly showing the inner sleeve in the second position.
  • Figure 3 is similar to Figure 2 and mainly shows that the inner sleeve is in the first position.
  • Figure 4 is a plan view of the inner sleeve provided by the safety syringe of the first embodiment of the present invention.
  • Fig. 5 is a plan sectional view showing the safety needle barrel according to the first embodiment of the present invention, mainly showing the needle extending outside the outer sleeve.
  • Figure 6 is similar to Figure 5 and shows that the needle is located inside the outer sleeve.
  • Figure 7 is similar to Figure 6 and primarily shows that the outer sleeve is deflected a predetermined angle relative to the inner sleeve.
  • Fig. 8 is a partial plan view showing the inner sleeve of the safety syringe according to the second embodiment of the present invention, mainly showing different embodiments of the needle mounting portion.
  • Fig. 9 is a partial plan view showing the inner sleeve of the safety syringe according to the third embodiment of the present invention, mainly showing different embodiments of the positioning portion.
  • Figure 10 is a plan view of Figure 9.
  • a safety syringe 10 according to a first embodiment of the present invention includes an outer sleeve 20, an inner sleeve 30, and a piston rod 40.
  • the outer sleeve 20 is made of a plastic material.
  • the inner wall surface of the rear end of the outer sleeve 20 has a first annular flange 21, a receiving groove 22 adjacent to the first annular flange 21, and a second adjacent to the receiving groove 22, from the rear to the front.
  • the outer sleeve 20 has a front end opening 24 and a first rear end opening 25, wherein the first rear end opening 25 is adjacent to the first annular flange 21, and the inner diameter of the first rear end opening 25 faces The direction away from the first annular flange 21 gradually increases.
  • the inner sleeve 30 is made of a plastic material.
  • the front end of the inner sleeve 30 has a needle mounting portion 31 and a positioning portion 34 disposed adjacent to the needle mounting portion 31.
  • the needle mounting portion 31 is in the embodiment of a screw socket 32 and a screw socket 32.
  • the socket shaft 33 is configured, whereby when the needle 12 is used, the needle 12 is screwed to the screw seat 32 of the needle mounting portion 31 of the inner sleeve 30, and the needle is sleeved on the inner sleeve 30.
  • the sleeve shaft 33 of the mounting portion 31 further, as shown in FIG.
  • the positioning portion 34 is a bump which is arranged at equal angular intervals around the axial direction of the inner sleeve 30 in the present embodiment, and the shaft of the positioning portion 34
  • the length L2 is smaller than the axial length L1 of the accommodating groove 22 of the outer sleeve 20.
  • the rear end of the inner sleeve 30 has a second rear end opening 35 and a flap 36 extending outward from the periphery of the second rear end opening 35.
  • the inner sleeve 30 When the inner sleeve 30 is assembled to the outer pair cylinder 20, since the inner diameter of the first rear end opening 25 is gradually increased toward the direction away from the first annular flange 21, the inner sleeve 30 can be easily passed through the outer sleeve.
  • the first rear end opening 25 of the sleeve 20 is disposed in the outer sleeve 20, and the positioning portion 34 of the inner sleeve 30 is received by the outer sleeve 20 during the process of the inner sleeve 30 passing through the outer sleeve 20.
  • An annular flange 21 is deformed by pressing, because the protruding height of the positioning portion 34 of the inner sleeve 30 is limited, so that the positioning portion 34 of the inner sleeve 30 can be made without applying too much thrust to the inner sleeve 30.
  • the first annular flange 21 of the outer sleeve 20 reaches the receiving groove 22 of the outer sleeve 20, and the inner sleeve 30 is at a first position P2 (see FIG. 2). As shown, when the inner sleeve 30 is at the second position P2 as shown in FIG.
  • the positioning portion 34 of the inner sleeve 30 is located in the receiving groove 22 of the outer sleeve 20, and the positioning of the inner sleeve 30 is shown.
  • the portion 34 is blocked by the first and second annular flanges 21, 23 of the outer sleeve 20 such that the range of movement of the inner sleeve 30 at this time is limited to the first and second annular projections of the outer sleeve 20.
  • the inner sleeve 30 is continuously urged, and the positioning portion 34 of the inner sleeve 30 is passed through the second annular flange 23 of the outer sleeve 20, and the assembly of the two is completed.
  • a first position P1 shown in FIG.
  • the positioning portion 34 of the inner sleeve 30 is located at the front end opening 24 of the outer sleeve 20 and outside. Between the second annular flanges 23 of the sleeve 20, the inner sleeve 30 can be moved over a wide range relative to the outer sleeve 20 at this time.
  • the front end of the piston rod 40 has a push top 41, and the rear end of the piston rod 40 has an operating portion 42.
  • the piston rod 40 is disposed in the inner sleeve 30 via the second rear end opening 35 of the inner sleeve 30 such that the push top 41 of the piston rod 40 is located in the inner sleeve 30, and the operating portion 42 of the piston rod 40 is located in the inner sleeve.
  • the tube 30 is externally pressed by the medical staff.
  • the inner sleeve 30 is held at the first position P1 and pushed forward, so that the screw seat 32 of the needle mounting portion 31 of the inner sleeve 30 abuts against the periphery of the front end opening 24 of the outer sleeve 20.
  • the socket shaft 33 of the needle mounting portion 31 of the inner sleeve 30 is partially exposed to the outer sleeve 20 via the front end opening 24 of the outer sleeve 20, thereby allowing the needle 12 to be exposed, and then the needle 12 is exposed.
  • the operating portion 42 of the piston rod 40 can be pressed, and the piston rod 40 can be injected by pushing the liquid medicine 41 from the inner sleeve 30 through the needle 12 during the pressing process.
  • the flap 36 of the inner sleeve 30 is pulled to retract the inner sleeve 30 together with the needle 12 and the piston rod 40 in the direction of the second position P2 due to the second annular flange of the outer sleeve 20.
  • the inner diameter of the inner diameter of the outer sleeve 20 is gradually increased, and the protruding height of the positioning portion 34 of the inner sleeve 30 is limited, so that the inner sleeve 30 is not required to be pulled too much.
  • the positioning portion 34 of the inner sleeve 30 reaches the accommodating groove 22 of the outer sleeve 20 through the second annular flange 23 of the outer sleeve 20, so that the inner cylinder 30 is located at the second position P2 as shown in FIG.
  • the needle 12 at this time will remain in the outer sleeve 20 to avoid exposure to increase safety after the injection is completed.
  • the material characteristics of the outer sleeve 20, together with the receiving groove 22 of the outer sleeve 20, are greater than the axial length.
  • the relationship of the positioning portion 34 of the inner sleeve 30 can further bend the outer sleeve 20 at this time, causing the outer sleeve 20 to be slightly deformed and deflected relative to the inner sleeve 30, as shown in Fig.
  • the needle mounting portion 31 of the inner sleeve 30 can have different structural changes. As shown in FIG. 8, in the second embodiment of the present invention, the needle mounting portion 31 is a single set of shafts, and the needle 14 is assembled in a sleeve manner. Further, as shown in FIGS. 9 and 10, the positioning portion 34 of the inner sleeve 30 is not necessarily formed by four projections. In the third embodiment of the present invention, the positioning portion 34 of the inner sleeve 30 is a single one. The annular projections can also achieve a snap-fit effect with the first and second annular flanges 21, 23 of the outer sleeve 20.
  • the safety syringe 10 of the present invention utilizes the cooperation between the positioning portion 34 of the inner sleeve 30 and the receiving groove 22 of the outer sleeve 20, and the first and second rings of the outer sleeve 20 are added.
  • the limiting effect provided by the flanges 21, 23 enables the safety syringe 10 of the present invention to be simplified in structure compared to the prior art, and the assembly can be completed without much effort, thereby achieving the object of the present invention. .
  • the invention provides a safety syringe comprising an outer sleeve, an inner sleeve disposed on the outer sleeve and a piston rod disposed on the inner sleeve.
  • the outer sleeve has a first annular flange, a second annular flange and a receiving groove between the first and second annular flanges
  • the inner sleeve has a needle mounting for mounting the needle And a positioning portion adjacent to the needle mounting portion, when the inner sleeve is in a first position, the positioning portion of the inner sleeve is located outside the receiving groove of the outer sleeve, so that the needle can be pushed by the inner sleeve And extending the outer sleeve for injection, when the inner sleeve is pulled back from the first position to a second position, the positioning portion of the inner sleeve is located in the receiving groove of the outer sleeve and is first by the outer sleeve

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Vascular Medicine (AREA)
  • Anesthesiology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

一种安全针筒(10)，包含有一外套筒(20)、一设于外套筒(20)的内套筒(30)及一设于内套筒(30)的活塞杆(40)。外套筒(20)具有一第一环状凸缘(21)、一第二环状凸缘(23)与一位于第一、第二环状凸缘(21,23)之间的容置槽(22)，内套筒(30)具有一用以安装针头(12)的针头安装部(31)与一邻设于针头安装部(31)的定位部(34)，当内套筒(30)位于一第一位置时，内套筒(30)的定位部(34)位于外套筒(20)的容置槽(22)外，使得针头(12)能借由内套筒(30)的推动而伸出外套筒(20)进行注射，当内套筒(30)自第一位置被回拉至一第二位置时，内套筒(30)的定位部(34)位于外套筒(20)的容置槽(22)内且被外套筒(20)的第一、第二环状凸缘(21,23)给阻挡住，此时的针头(12)保持于外套筒(20)内，以增加在注射完毕后的安全性。

Description

安全针筒 技术领域
本发明涉及安全针筒，尤指一种结构简单且容易组装的安全针筒。
背景技术
针筒是一种用来配合针头将药液、血液或营养液等液体注射于人体内的器具。在注射完毕后，由于针头在已经沾附有人体的血液，所以必须将使用过后的针头进行安全处理，以避免医护人员或其它人发生被针头刺伤的情况。早期的安全处理方式是将针头插设于一针头套内进行收纳，但是在插设过程中，医护人员可能因为本身的不小心或受到其它外力推挤的状况下，造成针头意外刺入医护人员的手部，进而提高医护人员遭到意外感染的风险，这样的问题也就衍生出了所谓的安全针筒来减少医护人员用手直接接触到针头的机会。
就传统的安全针筒来说，在医护人员将活塞杆塞入外筒内完成注射之后，活塞杆会通过特殊的结构设计跟针头座卡接在一起，使针头座能够借由活塞杆的拉动而连同针头一起退回到外筒内。然而在前述现有技术当中，医护人员需要对活塞杆施以较大的推力，才能让活塞杆与针头座之间形成卡接，如此不但会造成医护人员在组装上的困扰，而且如果施力过大，可能会导致结构方面的损坏。因此，传统安全针筒在结构方面有改良的必要。
发明公开
本发明的主要目的在于提供一种安全针筒，其结构简单且容易组装，以增加使用上的便利性。
为了达成上述目的，本发明提供一种安全针筒，包含有一外套筒、一内套筒，以及一活塞杆。该外套筒具有一前端开口与一第一后端开口，该外套筒的后端的内壁面具有一第一环状凸缘、一第二环状凸缘与一容置槽，该第一、第二环状凸缘之间呈间隔设置，该容置槽位于该第一、第二环状凸缘之间；该内套筒的前端具有针头安装部与一邻设于该针头安装部的定位部，该内套筒的后端具有一第二后端开口，该内套筒经由该外套筒的第一后端开口穿设于该外套筒且能于一第一位置与一第二位置之间相对该外套筒作动，当该内套筒位于 该第一位置时，该内套筒的定位部位于该外套筒的前端开口与该外套筒的第二环状凸缘之间，使得该内套筒的针头安装部能经由该外套筒的前端开口而局部露出于该外套筒外，当该内套筒位于该第二位置时，该内套筒的定位部位于该外套筒的容置槽内，且该内套筒的定位部被该外套筒的第一、第二环状凸缘给阻挡住，使得该内套筒的针头安装部完全位于该外套筒内；该活塞杆经由该内套筒的第二后端开口穿设于该内套筒且能相对该内套筒位移。
由上述结构可知，当该内套筒位于一第一位置时，该内套筒的定位部位于该外套筒的前端开口与该外套筒的第二环状凸缘之间，使得该内套筒在外力作用之下能让该针头安装部经由该外套筒的前端开口而局部露出于该外套筒外，让设置在该内套筒的针头安装部的一针头进行注射。当该内套筒自该第一位置移动至一第二位置时，该内套筒的定位部位于该外套筒的容置槽内，而且，该内套筒的定位部被该外套。的第一、第二环状凸缘给阻挡住，使得该内套筒的活动范围仅限于在该外套筒的第一、第二环状凸缘之间，此时该内套筒的针头安装部会连同该针头一起保持在该外套筒内，以增加在注射完毕后的安全性。
较佳地，该外套筒的第二环状凸缘的内径朝远离该外套筒的容置槽的方向逐渐增加，使得在该内套筒从该第一位置移动至该第二位置的过程中让该定位部能够较不费力地通过该外套筒的第二环状凸缘。
较佳地，该外套筒的第一后端开口邻接于该外套筒的第一环状凸缘，且该外套筒的第一后端开口的内径朝远离该外套筒的第一环状凸缘的方向逐渐增加，使得该内套筒在组装于该外套筒的过程中能够较不费力地让该定位部通过该外套筒的第一环状凸缘。
较佳地，该外套筒的容置槽的轴向长度大于该内套筒的定位部的轴向长度。借此，当该内套筒位于该第二位置时，该外套筒能在外力作用之下相对该内套筒偏斜一预定角度，使该外套筒的前端开口与该内套筒的针头安装部之间相互错开而不在同一直线上，在此情况之下，即使该活塞杆或该内套筒受到意外的碰撞，该针头也不会经由该外套筒的前端开口伸出该外套筒，借以进一步确保在该针头在注射完毕后的安全性。
较佳地，该内套筒的定位部可以由四个以该内套筒的轴向为中心呈等角度间隔排列的凸块所形成，或者该内套筒的定位部也可以由单一个环状凸块所形成。
以下结合附图和具体实施例对本发明进行详细描述，但不作为对本发明的限定。
附图简要说明
图1为本发明第1实施例的安全针筒的平面分解剖视图。
图2为本发明第1实施例的安全针筒所提供的内、外套筒的平面组合剖视图，主要显示内套筒位于第二位置。
图3类同于图2，主要显示内套筒位于第一位置。
图4为本发明第1实施例的安全针筒所提供的内套筒的俯视图。
图5为本发明第1实施例的安全针筒的平面组合剖视图，主要显示针头伸出外套筒外。
图6类同于图5，主要显示针头位于外套筒内。
图7类同于图6，主要显示外套筒相对于内套筒偏斜一预定角度。
图8为本发明第2实施例的安全针筒所提供的内套筒的局部外观平面图，主要显示针头安装部的不同实施态样。
图9为本发明第3实施例的安全针筒所提供的内套筒的局部外观平面图，主要显示定位部的不同实施态样。
图10为图9的俯视图。
其中，附图标记：
10安全针筒      12、14针头
20外套筒        21第一环状凸缘
22容置槽        L1轴向长度
23第二环状凸缘  24前端开口
25第一后端开口  30内套筒
31针头安装部    32螺接座
33套接轴        34定位部
L2轴向长度      35第二后端开口
36翼板          P1第一位置
P2第二位置      40活塞杆
41推顶部        42操作部
实现本发明的最佳方式
以下借由所列举的若干较佳实施例配合图式，详细说明本发明的技术内容及特征，本说明书内容所提及的“前”、“后”、“内”、“外”等方向性形容用语，只是以正常使用方向为基准的例示描述用语，并非作为限制主张范围的用意。
请先参阅图1，本发明第1实施例的安全针筒10包含有一外套筒20、一内套筒30，以及一活塞杆40。
外套筒20由塑料材质所制成。外套筒20的后端的内壁面由后往前依序具有一第一环状凸缘21、一邻接第一环状凸缘21的容置槽22，以及一邻接容置槽22的第二环状凸缘23，其中的第二环状凸缘23在内径方面朝远离容置槽22的方向逐渐增加。此外，外套筒20具度一前端开口24与一第一后端开口25，其中的第一后端开口25邻接于第一环状凸缘21，而且，第一后端开口25的内径朝远离第一环状凸缘21的方向逐渐增加。
内套筒30由塑料材质所制成。内套筒30的前端具有一针头安装部31与一邻设于针头安装部31的定位部34，针头安装部31在本实施例中由一螺接座32与一位于螺接座32内的套接轴33所构成，借此，在配合针头12使用时，针头12以螺接方式固定于内套筒30的针头安装部31的螺接座32，同时套设于内套筒30的针头安装部31的套接轴33；再如图4所示，定位部34在本实施例中为四个以内套筒30的轴向为中心呈等角度间隔排列的凸块，定位部34的轴向长度L2小于外套筒20的容置槽22的轴向长度L1。此外，内套筒30的后端具有一第二后端开口35与一自第二后端开口35的周缘往外延伸的翼板36。
在内套筒30组装于外对筒20时，由于第一后端开口25的内径是朝远离第一环状凸缘21的方向逐渐增加，所以让内套筒30可以很容易地经由外套筒20的第一后端开口25穿设于外套筒20内，在内套筒30穿设于外套筒20的过程中，内套筒30的定位部34会被外套筒20的第一环状凸缘21给挤压而产生变形，因为内套筒30的定位部34的突出高度有限，所以不用对内套筒30施以太大的推力就能让内套筒30的定位部34通过外套筒20的第一环状凸缘21而到达外套筒20的容置槽22，此时的内套筒30位于一第位置P2(如图2 所示)，当内套筒30位于如图2所示的第二位置P2时，内套筒30的定位部34位于外套筒20的容置槽22内，而且，内套筒30的定位部34被外套筒20的第一、第二环状凸缘21、23给阻挡住，使得内套筒30在此时的移动范围仅限于在外套筒20的第一、第二环状凸缘21、23之间。接着再持续对内套筒30施以推力，让内套筒30的定位部34通过外套筒20的第二环状凸缘23之后即完成两者的组装，此时的内套筒30位于一第一位置P1(如图3所示)，当内套筒30位于如图3所示的第一位置P1时，内套筒30的定位部34位于外套筒20的前端开口24与外套筒20的第二环状凸缘23之间，使得内套筒30在此时能相对外套筒20作较大范围的移动。
活塞杆40的前端具有一推顶部41，活塞杆40的后端具有一操作部42。活塞杆40经由内套筒30的第二后端开口35穿设于内套筒30，使活塞杆40的推顶部41位于内套筒30内，此时活塞杆40的操作部42位于内套筒30外供医护人员按压。
由上述可知，首先将内套筒30保持在第一位置P1并往前推顶，使内套筒30的针头安装部31的螺接座32抵靠于外套筒20的前端开口24的周缘，如图5所示，此时内套筒30的针头安装部31的套接轴33会经由外套筒20的前端开口24而局部露出于外套筒20，进而让针头12显露在外，接着即可按压活塞杆40的操作部42，让活塞杆40在受压过程中借由推顶部41将药液从内套筒30经由针头12往外推送来进行注射。待注射完毕之后，拉动内套筒30的翼板36，使内套筒30连同针头12与活塞杆40一起朝第二位置P2的方向往后退，由于外套筒20的第二环状凸缘23的内径朝远离外套筒20的容置槽22的方向逐渐增加，再加上内套筒30的定位部34的突出高度有限，所以不用对内套筒30施以太大的拉力就能让内套筒30的定位部34通过外套筒20的第二环状凸缘23而到达外套筒20的容置槽22，使内接筒30位于如图6所示的第二位置P2，此时的针头12会保持在外套筒20内避免外露，以增加在注射完毕后的安全性。
另一方面，当内套筒30位于如图6所示的第二位置P2时，借由外套筒20的材质特性，再加上外套筒20的容置槽22在轴向长度方面大于内套筒30的定位部34的关系，此时可以进一步对外套筒20加以弯折，使外套筒20产生些微的变形而相对内套筒30偏斜，如图7所示，主要是要让外套筒20偏斜 到让外套筒20的前端开口24与内套筒30的针头安装部31之间相互错开而不在同一直线上，在此一情况之下，即使内套筒30或活塞杆40受到意外碰撞，针头12也不会经由外套筒20的前端开口24伸出外套筒20，借以进一步确保针头12在注射完毕后具有足够的安全性。
在此需要补充说明的是，为了配合不同形式的针头14，内套筒30的针头安装部31可以有不同的结构变化，如图8所示，在本发明第2实施例中，针头安装部31为单一套接轴，让针头14以套设方式进行组装。此外，再如图9及图10所示，内套筒30的定位部34不一定由四个凸块所形成，在本发明第3实施例中，内套筒30的定位部34为单一个环状凸块，如此同样也能够跟外套筒20的第一、第二环状凸缘21、23之间达到卡接效果。
综上所陈，本发明的安全针筒10利用内套筒30的定位部34与外套筒20的容置槽22之间的配合，加上外套筒20的第一、第二环状凸缘21、23所提供的限位效果，使本发明的安全针筒10相较于现有技术能够有效简化结构，而且不需耗费太大力气即能完成整体组装，进而达到本发明的目的。
当然，本发明还可有其它多种实施例，在不背离本发明精神及其实质的情况下，熟悉本领域的技术人员当可根据本发明作出各种相应的改变和变形，但这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。
工业应用性
本发明提供的一种安全针筒，包含有一外套筒、一设于外套筒的内套筒及一设于内套筒的活塞杆。外套筒具有一第一环状凸缘、一第二环状凸缘与一位于第一、第二环状凸缘之间的容置槽，内套筒具有一用以安装针头的针头安装部与一邻设于针头安装部的定位部，当内套筒位于一第一位置时，内套筒的定位部位于外套筒的容置槽外，使得针头能借由内套筒的推动而伸出外套筒进行注射，当内套筒自第一位置被回拉至一第二位置时，内套筒的定位部位于外套筒的容置槽内且被外套筒的第一、第二环状凸缘给阻挡住，此时的针头保持于外套筒内，以增加在注射完毕后的安全性。本发明结构简单且容易组装，可以增加使用上的便利性。

Claims (6)

  1. 一种安全针筒，其特征在于，包含有：
    一外套筒，具有一前端开口与一第一后端开口，该外套筒的后端的内壁面具有一第一环状凸缘、一第二环状凸缘与一容置槽，该第一、第二环状凸缘之间呈间隔设置，该容置槽位于该第一、第二环状凸缘之间；
    一内套筒，该内套筒的前端具有一针头安装部与一邻设于该针头安装部的定位部，该内套筒的后端具有一第二后端开口，该内套筒经由该外套筒的该第一后端开口穿设于该外套筒且能于一第一位置与一第二位置之间相对该外套筒作动，当该内套筒位于该第一位置时，该内套筒的定位部位于该外套筒的前端开口与该外套筒的第二环状凸缘之间，使得该内套筒的针头安装部能经由该外套筒的前端开口而局部露出于该外套筒外，当该内套筒位于该第二位置时，该内套筒的定位部位于该外套筒的容置槽内，且该内套筒的定位部被该外套筒的第一、第二环状凸缘给阻挡住，使得该内套筒的针头安装部完全位于该外套筒内；以及
    一活塞杆，经由该内套筒的该第二后端开口穿设于该内套筒且能相对该内套筒位移。
  2. 根据权利要求1所述的安全针筒，其特征在于，该外套筒的该第一后端开口邻接于该外套筒的该第一环状凸缘，且该外套筒的该第一后端开口的内径朝远离该外套筒的该第一环状凸缘的方向逐渐增加。
  3. 根据权利要求1所述的安全针筒，其特征在于，该外套筒的该第二环状凸缘的内径朝远离该外套筒的该容置槽的方向逐渐增加。
  4. 根据权利要求1所述的安全针筒，其特征在于，该内套筒的定位部为四个凸块，该四个凸块以该内套筒的轴向为中心呈等角度间隔排列。
  5. 根据权利要求1所述的安全针筒，其特征在于，该内套筒的定位部为一环状凸块。
  6. 根据权利要求1所述的安全针筒，其特征在于，该外套筒的容置槽的轴向长度大于该内套筒的定位部的轴向长度，当该内套筒位于该第二位置时，该外套筒能相对该内套筒偏斜一预定角度，使得该外套筒的前端开口与该内套筒的针头安装部之间相互错开而不在同一直线上。
PCT/CN2017/092891 2017-07-14 2017-07-14 安全针筒 WO2019010689A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US16/631,036 US20210330886A1 (en) 2017-07-14 2017-07-14 Safety syringe
CN201780093193.1A CN110997047A (zh) 2017-07-14 2017-07-14 安全针筒
EP17917529.4A EP3653245A4 (en) 2017-07-14 2017-07-14 SAFETY SYRINGE
PCT/CN2017/092891 WO2019010689A1 (zh) 2017-07-14 2017-07-14 安全针筒

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2017/092891 WO2019010689A1 (zh) 2017-07-14 2017-07-14 安全针筒

Publications (1)

Publication Number Publication Date
WO2019010689A1 true WO2019010689A1 (zh) 2019-01-17

Family

ID=65000890

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/092891 WO2019010689A1 (zh) 2017-07-14 2017-07-14 安全针筒

Country Status (4)

Country Link
US (1) US20210330886A1 (zh)
EP (1) EP3653245A4 (zh)
CN (1) CN110997047A (zh)
WO (1) WO2019010689A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11786672B2 (en) 2020-03-27 2023-10-17 Jaroslaw Moleda Needle-based device with a safety mechanism implemented therein
US11890459B2 (en) 2020-03-27 2024-02-06 Medivena Sp. Z O.O. Needle-based device with external safety cap and a needle guide element thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4888002A (en) * 1988-08-30 1989-12-19 Braginetz Paul A Disposable shield medical syringe
CN1520891A (zh) * 2003-01-30 2004-08-18 杨仲玉 安全针筒
CN1689655A (zh) * 2004-04-19 2005-11-02 刘蓉娥 套控式安全型注射器
CN1977991A (zh) * 2005-12-01 2007-06-13 许明正 抛弃式注射器
CN104548277A (zh) * 2013-10-16 2015-04-29 吴国城 安全注射器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5338310A (en) * 1992-02-06 1994-08-16 Becton, Dickinson And Company Needle device having safety indication features
CN2555857Y (zh) * 2002-07-05 2003-06-18 无锡市宇寿医疗器械有限公司 自毁式一次性注射器
ES2533878T3 (es) * 2004-09-03 2015-04-15 L.O.M. Laboratories Inc. Jeringa retractable accionable por gas
CN2880124Y (zh) * 2006-02-17 2007-03-21 刘华林 安全自毁注射器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4888002A (en) * 1988-08-30 1989-12-19 Braginetz Paul A Disposable shield medical syringe
CN1520891A (zh) * 2003-01-30 2004-08-18 杨仲玉 安全针筒
CN1689655A (zh) * 2004-04-19 2005-11-02 刘蓉娥 套控式安全型注射器
CN1977991A (zh) * 2005-12-01 2007-06-13 许明正 抛弃式注射器
CN104548277A (zh) * 2013-10-16 2015-04-29 吴国城 安全注射器

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3653245A4 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11786672B2 (en) 2020-03-27 2023-10-17 Jaroslaw Moleda Needle-based device with a safety mechanism implemented therein
US11890459B2 (en) 2020-03-27 2024-02-06 Medivena Sp. Z O.O. Needle-based device with external safety cap and a needle guide element thereof
US12005244B2 (en) 2020-03-27 2024-06-11 Medivena Sp. Z O.O. Needle-based device based on direct wing-based coupling of a needle shield to a barrel thereof and safety mechanism implemented therein
US12343515B2 (en) 2020-03-27 2025-07-01 Medivena Sp. Z O.O. Needle-based device with a safety mechanism implemented therein

Also Published As

Publication number Publication date
EP3653245A1 (en) 2020-05-20
US20210330886A1 (en) 2021-10-28
EP3653245A4 (en) 2021-01-06
CN110997047A (zh) 2020-04-10

Similar Documents

Publication Publication Date Title
US11878154B2 (en) Needle shield puller for drug delivery system
US9078977B2 (en) Dual shielded syringe
US6458101B1 (en) Safety syringe with retractable needle holder
EP3042689B1 (en) Syringe and syringe set
JP2001037878A (ja) 安全注射器
CN105530980A (zh) 针罩移除装置
EP0649318B1 (en) Syringe for medicinal purposes
TW201600135A (zh) 藥物輸送裝置
US20160022907A1 (en) Medicament container carrier and adapter
US10603448B2 (en) Disposable syringe for prevention of reuse
US20160317755A1 (en) Safety syringe
TW201519926A (zh) 安全針筒
US20220280729A1 (en) Low deadspace syringe including a pivoting needle guard
US11097068B2 (en) Safety needle with deformable cannula for injector pen
WO2019010689A1 (zh) 安全针筒
US20140094758A1 (en) Needle Assembly Cover
JP2014528305A (ja) 針安全デバイス
TWM552355U (zh) 安全針筒
EP0882467A2 (en) Syringe for medicinal purposes
TWM624770U (zh) 可用於免針加藥之安全針筒
US11318259B2 (en) Needle shield remover
US20160074598A1 (en) Safety syringe
GB2538708A (en) Disposable anaesthetic syringe
WO2022041523A1 (zh) 针头结构及具有其的注射器
TWI823172B (zh) 可用於免針加藥之安全針筒

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17917529

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2017917529

Country of ref document: EP

Effective date: 20200214