WO2019109814A1 - Seringue - Google Patents

Seringue Download PDF

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Publication number
WO2019109814A1
WO2019109814A1 PCT/CN2018/117005 CN2018117005W WO2019109814A1 WO 2019109814 A1 WO2019109814 A1 WO 2019109814A1 CN 2018117005 W CN2018117005 W CN 2018117005W WO 2019109814 A1 WO2019109814 A1 WO 2019109814A1
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WO
WIPO (PCT)
Prior art keywords
liquid
ring
slider
locking seat
cavity
Prior art date
Application number
PCT/CN2018/117005
Other languages
English (en)
Chinese (zh)
Inventor
杨德怡
Original Assignee
杨德怡
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 杨德怡 filed Critical 杨德怡
Publication of WO2019109814A1 publication Critical patent/WO2019109814A1/fr

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    • 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
    • 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
    • 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
    • A61M5/3221—Constructional features thereof, e.g. to improve manipulation or functioning
    • 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
    • A61M5/3221—Constructional features thereof, e.g. to improve manipulation or functioning
    • A61M2005/3228—Constructional features thereof, e.g. to improve manipulation or functioning the needle being retracted by a member protruding laterally through a slot in the barrel, e.g. double-ended needles

Definitions

  • the present invention relates to the field of medical devices, and in particular to a syringe.
  • Syringe is one of the most basic medical devices. In order to reduce the spread of blood-borne diseases in patients, countries around the world, including China, have enacted legislation to force the use of disposable safety syringes.
  • common disposable syringes generally have the defects of being reusable and without safety devices, and the needles are exposed after injection. On the one hand, they are easily used by criminals or drug addicts, on the other hand, syringes that can only be used once. Repeated use can easily cause virus transmission and cross infection.
  • the needles In order to prevent the use of disposable syringes, the needles stab the medical staff during the collection and treatment process, resulting in the spread of hepatitis B, hepatitis C, AIDS and other diseases leading to the infection of medical personnel. Nurses and waste collection personnel from all countries were exposed by syringe needles. Injury, more than 10 million people worldwide.
  • a primary object of the present invention is to provide a syringe for solving the problem that the needle exposure of the prior art syringe is easy to stab the medical staff.
  • the present invention provides a syringe comprising a jacket and a push cylinder, the push cylinder being movably disposed in the jacket, the push cylinder having a push cylinder chamber, the syringe further comprising: a slider, the slider extending along the push barrel The direction is slidably disposed in the push cylinder cavity; the locking seat is detachably sleeved on the slider, and the needle of the syringe is detachably mounted on the locking seat; the liquid retaining ring and the liquid retaining ring position are Adjustingly sleeved on the locking seat to clamp or release the locking seat; wherein the top of the pushing cylinder is provided with a pushing portion, and the pushing portion cooperates with the liquid-proof ring to push the liquid-proof ring to move when the pushing portion moves To release the locking seat, after the locking seat and the slider are locked, the locking seat is driven by the slider to retract the needle into the pushing cylinder cavity.
  • the locking seat is provided with a first limiting step
  • the top of the outer sleeve is provided with a guiding ring
  • the guiding ring cooperates with the first limiting step to limit at least part of the locking seat to the cavity of the outer casing in vivo.
  • a guide resistor accommodating cavity is enclosed between the guide ring and the inner wall of the outer sleeve, and the liquid-repellent ring has a clamping position for clamping the locking seat and a release position for releasing the liquid-proof ring; when the liquid-proof ring is located When the position is clamped, the liquid-repellent ring is clamped between the locking seat and the inner wall of the outer casing; when the liquid-repellent ring is in the release position, the liquid-repellent ring moves into the conductive-receiving receiving cavity.
  • the inner wall of the outer sleeve is provided with a clamping flange, and when the liquid-repellent ring is in the clamping position, the liquid-proof ring is clamped between the locking seat and the clamping flange.
  • the clamping flange has a transition slope, and the transition slope is disposed toward the liquid-repellent ring, so that the liquid-repellent ring slides along the transition slope when being subjected to the thrust of the pushing portion to slide into the conductive-resistance receiving cavity.
  • the pushing portion is an annular body, and the top end of the pushing portion is used for pushing the liquid-repellent ring, and the bottom of the pushing portion is connected with the barrel of the pushing cylinder, and the pushing chamber is the barrel of the barrel of the pushing barrel, and the cavity of the pushing portion
  • the body is in communication with the push cylinder chamber, and the slider passes through the cavity of the push cylinder portion; the cavity of the push portion is conical, and the diameter of the cavity of the push portion is gradually reduced in the direction of the push cylinder chamber to make the lock
  • the seat is clamped in the cavity of the pusher.
  • a second limiting step is formed between the bottom end of the pushing portion and the top end of the barrel of the pushing cylinder, and the slider is provided with a third limiting step for cooperating with the second limiting step to move the slider The limit is in the push cylinder cavity.
  • the slider is provided with a fourth limiting step
  • the syringe further comprises an elastic member, one end of the elastic member abuts the fourth limiting step, and the other end of the elastic member abuts the second limiting step to prevent After the liquid ring is disengaged from the locking seat and the locking seat is locked with the slider, the slider is slid toward the bottom of the pushing cylinder cavity by the elastic member.
  • the top of the slider is provided with a clamping head, and the locking seat is provided with a locking portion.
  • the clamping head passes out from the locking seat, the locking portion is clamped on the clamping head to make the locking
  • the tight seat is connected to the slider lock.
  • the clamping head is provided with a clamping groove, and the locking portion is clamped in the clamping groove.
  • the locking portion includes a plurality of locking pieces, and the plurality of locking pieces are spaced apart around the axis of the locking seat, the clamping groove is an annular groove, and the plurality of locking pieces are all clamped in the clamping groove.
  • the clamping head is provided with a liquid-passing groove through which the liquid flows, and the liquid-passing groove communicates with the cavity of the pushing cylinder and the needle, so that the liquid in the pushing cylinder flows into the needle through the liquid-passing groove.
  • the slider has a liquid accommodating cavity for communicating with the push cylinder chamber, and the liquid permeable groove communicates with the liquid accommodating cavity to allow the liquid permeable groove to communicate with the push cylinder chamber through the liquid accommodating cavity.
  • the top of the outer sleeve is provided with a mounting ring, and the safety cap for covering the needle is mounted on the mounting ring, the cavity of the mounting ring is a cylindrical cavity, and the cavity of the mounting ring is in communication with the cavity of the outer casing.
  • the liquid-repellent ring comprises a main ring body and a liquid-proof flange disposed on the inner side of the main ring body, and a pushing step is formed between the main ring body and the liquid-proof flange, and the pushing step cooperates with the pushing portion to make the top end of the pushing portion Insert it at the push step to push the liquid retaining ring.
  • the slider is provided with a supporting step
  • the locking seat is provided with a supporting portion matched with the supporting step, so that when the pushing portion pushes the liquid-proof ring to move, the supporting portion abuts against the supporting step to push the slider toward the pushing The bottom of the barrel pushes the bottom of the barrel.
  • the locking seat and the slider are added to the existing syringe, and the existing structure is changed to achieve the function of automatically retracting after the needle is used, thereby solving the needle of the prior art syringe.
  • the exposure is easy to stab the problem of medical staff.
  • the device is easy to use, simple to operate, low in cost, and easy to promote on a large scale.
  • Figure 1 is a schematic view showing the overall structure of an embodiment of a syringe of the present invention
  • Figure 2 is a partial enlarged view of the syringe of the present invention.
  • Figure 3 is a schematic view showing the structure of the slider and the locking seat of the syringe of the present invention retracted to the bottom of the push cylinder;
  • Figure 4 is a schematic view showing the structure of the outer casing of the syringe of the present invention.
  • Figure 4a is a top plan view of the outer casing of the syringe of Figure 4.
  • Figure 5 is a schematic view showing the structure of the locking seat of the syringe of the present invention.
  • Figure 6 is a schematic structural view of a liquid-repellent ring of the syringe of the present invention.
  • Figure 7 is a schematic structural view of a push barrel of the syringe of the present invention.
  • Figure 7a is a plan view of the push barrel of the syringe of the present invention.
  • Figure 8 is a schematic view showing the structure of a slider of the syringe of the present invention.
  • Figure 8a is a top plan view of the slider of the syringe of Figure 8.
  • Figure 9 is a schematic view showing the structure of the back plug of the syringe of the present invention.
  • Figure 10 is a schematic view showing the structure of an elastic member of the syringe of the present invention.
  • Figure 11 is a schematic view showing the structure of a piston ring of a syringe of the present invention.
  • the syringe includes a jacket 1 and a push cylinder 2.
  • the push cylinder 2 is movably disposed in the outer casing 1.
  • the push cylinder 2 has a push cylinder chamber, and the syringe further includes: a slider 5, the slider 5 is slidably disposed in the pushing cylinder chamber along the extending direction of the pushing cylinder 2; the locking seat 3 is detachably sleeved on the slider 5, and the needle 33 of the syringe is detachable
  • the grounding ring is mounted on the locking seat 3; the liquid-repellent ring 4 and the liquid-repellent ring 4 are adjustably sleeved on the locking seat 3 to clamp or release the locking seat 3; wherein the top end of the pushing cylinder 2 is provided
  • the pushing portion 20, the pushing portion 20 cooperates with the liquid-repellent ring 4 to push the liquid-repellent ring 4 to move when the pushing portion 20 moves to release
  • the syringe designed by the invention has a slider, a locking seat and a liquid-proof ring on the existing jacket and the pushing cylinder; a locking seat is arranged between the slider and the needle, and the needle is connected to the locking seat and slides
  • the device is set to provide resilience when the needle is retracted, and the needle is retracted into the push cylinder cavity to realize the function of retracting the needle, which avoids the problem that the needle is exposed when the syringe is recovered, which may cause injury to the recycling personnel.
  • the design of the anti-liquid ring is equivalent to the switch for needle recovery. When the anti-liquid ring contacts the locking seat and is clamped, the locking seat cannot be retracted.
  • the locking seat will retract the needle into the push barrel cavity under the pulling force of the slider, so the advantage of the invention is that the needle can be controlled only by controlling whether the anti-liquid ring and the locking seat are in contact with each other.
  • the retraction, the operation is simple, and the utility is strong, thereby solving the problem that the needle exposure of the syringe in the prior art is easy to stab the medical staff.
  • the needle 33 is detachably mounted on the locking seat 3.
  • the locking seat 3 is provided with a first limiting step 31, and the top of the outer casing 1 is provided with a resistance preventing ring 9 which cooperates with the first limiting step 31 to lock the locking seat At least part of 3 is limited to the cavity of the outer casing 1.
  • a guiding ring is arranged on the top of the outer casing, and the locking seat is also provided with a first A limit step, the resistance ring is stuck to the first limit step, and the purpose is to prevent the lock seat and the needle from being pushed out of the outer sleeve, so that the syringe can smoothly complete the injection.
  • the guide ring 9 and the inner wall of the outer casing 1 enclose a resistance-receiving cavity 28 having a clamping position for clamping the locking seat 3 and for releasing the liquid-proof ring 4 Release position; when the liquid-repellent ring 4 is in the clamped position, the liquid-repellent ring 4 is clamped between the locking seat 3 and the inner wall of the outer casing 1; when the liquid-repellent ring 4 is in the release position, the liquid-proof ring 4 is moved to The resistance is accommodated in the cavity 28.
  • the guide ring disposed on the top of the outer sleeve has another function of enclosing the conductive inner casing with the inner wall of the outer casing, and the conductive outer casing provides a space for the liquid-proof ring to move.
  • the utility model is separated from the locking seat, and the locking seat is retracted; the guiding resistance receiving cavity provides space for separating the anti-liquid ring and the locking seat, and assists in completing the retraction of the needle, and the design is ingenious.
  • the inner wall of the outer casing 1 is provided with a clamping flange 14, and when the liquid-repellent ring 4 is in the clamping position, the liquid-repellent ring 4 is clamped to the locking seat 3. Between the clamping flange 14.
  • the liquid-repellent ring and the outer casing and the locking seat are more closely contacted here, so that the liquid-proof ring is firmly locked to the main locking seat, and the liquid-proof ring is prevented from sliding to the left and right, thereby preventing the liquid ring from being locked.
  • the locking seat causes an accident in which the needle is retracted during the injection, so the setting of the clamping flange avoids such problems and makes the syringe safer to use.
  • the clamping flange 14 has a transitional slope, and the transitional slope is disposed toward the liquid-repellent ring 4, so that the liquid-repellent ring 4 slides along the transitional slope to be slid to the resistance-receiving cavity 28 when subjected to the thrust of the pushing portion 20.
  • the transitional slope is disposed toward the liquid-repellent ring 4, so that the liquid-repellent ring 4 slides along the transitional slope to be slid to the resistance-receiving cavity 28 when subjected to the thrust of the pushing portion 20.
  • the surface is set as an inclined surface, and the inclination angle of the inclined surface can be obtained according to a limited experiment, and the purpose is to prevent the liquid-proof ring when the pushing portion does not contact and push the liquid-proof ring. Under the thrust of the liquid, it slides into the conductive resistance accommodating cavity 28.
  • the inclined surface is designed to provide a certain resistance to the sliding of the anti-liquid ring, and is completely fixed to lock the liquid-proof ring.
  • the design principle of the inclined surface is: when pushing When the liquid is injected into the cylinder, the thrust of the liquid cannot push the liquid-repellent ring away from the clamping flange, and the liquid-proof ring can be released from the clamping flange into the resistance-receiving receiving chamber 28 only under the pushing of the pushing portion.
  • the pushing portion 20 is an annular body, and the top end of the pushing portion 20 is used to push the liquid-repellent ring 4, the bottom of the pushing portion 20 is connected with the cylinder of the pushing cylinder 2, and the pushing cylinder chamber is the cylinder of the pushing cylinder 2.
  • the cavity of the body, the cavity of the pushing portion 20 communicates with the pushing cylinder cavity, the slider 5 passes through the cavity of the pushing portion 20; the cavity 19 of the pushing portion 20 is conical, and is pushed in a direction close to the pushing cylinder cavity
  • the diameter of the cavity of the portion 20 is gradually reduced to cause the slider 5 to be caught in the cavity of the pushing portion 20.
  • the cavity 19 of the pushing portion 20 is designed to have a conical shape. As shown in FIG. 2, when the syringe is placed in the vertical direction, the diameter of the pushing portion cavity is gradually decreased from the top to the bottom. This design not only facilitates the clamping slider. At the same time, the support portion of the locking seat is facilitated to enter the pushing portion cavity, thereby achieving the effect of pushing the slider and the pushing portion cavity apart.
  • a second limiting step 15 is formed between the bottom end of the pushing portion 20 and the top end of the barrel of the push cylinder 2, and the slider 5 is provided with a third portion for cooperating with the second limiting step 15
  • the step 30 is limited to limit the slider 5 within the push barrel cavity.
  • the second limit step cooperates with the third limit step on the slider so that the slider does not disengage from the pusher cavity from the pusher end of the pusher cylinder, and the slider is fixed at this position, thereby ensuring the safe use of the syringe .
  • the slider 5 is provided with a fourth limiting step 16
  • the syringe further comprises an elastic member 6
  • one end of the elastic member 6 abuts the fourth limiting step 16 .
  • the other end of the elastic member 6 abuts against the second limiting step 15 to make the slider 5 in the elastic member 6 after the liquid retaining ring 4 is disengaged from the locking seat 3 and the locking seat 3 and the slider 5 are locked. Under the action, it slides toward the bottom of the push cylinder chamber.
  • the tail portion of the slider of the present application is provided with a fourth limit step, and an elastic member is disposed between the fourth limit step and the second limit step.
  • the elastic member 6 is a spring.
  • the top of the slider 5 is provided with a clamping head 21, and the locking seat 3 is provided with a locking portion 22, and when the clamping head 21 passes out from the locking seat 3, the locking portion 22 is stuck. It is fastened to the clamping head 21 to lock the locking seat 3 to the slider 5.
  • the slider is coupled with the locking seat to form an integral body, thereby achieving the function of common movement.
  • the clamping head 21 is provided with a clamping groove, and the locking portion 22 is clamped in the clamping groove.
  • the locking portion is locked in the groove of the clamping head, and is more firm, so as to prevent the locking seat from being disengaged from the slider when retracting, and the tight fit of the locking seat and the slider is achieved.
  • the locking portion 22 includes a plurality of locking pieces, and the plurality of locking pieces are spaced around the axis of the locking seat 3, the clamping groove is an annular groove, and the plurality of locking pieces are locked. The sheets are all clamped in the clamping grooves.
  • the locking piece is arranged to be engaged with the locking portion, and the plurality of locking pieces are clamped in the clamping groove, so that the slider pushes the locking seat by the locking piece when retracting, and drives the locking seat Retract together.
  • the locking piece acts as a force transmission.
  • the clamping head 21 is provided with a liquid-passing groove 25 through which the liquid flows, and the liquid-passing groove 25 communicates with the cavity of the pushing cylinder chamber and the needle 33, so that the liquid in the pushing cylinder chamber passes through.
  • the liquid groove 25 flows into the needle 33.
  • the position of the chucking head should also allow the syringe to circulate the injection liquid at the time of injection, so that there is provided a liquid-passing groove 25 through which the liquid flows, and the liquid-passing groove 25 communicates with the cavity of the pushing cylinder chamber and the needle 33 to The liquid in the push cylinder chamber flows into the needle 33 through the liquid passage groove 25, and does not affect the normal injection function.
  • the slider 5 has a liquid accommodating chamber for communicating with the push cylinder chamber, and the liquid passage groove 25 communicates with the liquid accommodating chamber to allow the liquid passage groove 25 to communicate with the push cylinder chamber through the liquid accommodating chamber.
  • the liquid-passing groove 25 communicates with the liquid accommodating chamber, so that the liquid-passing groove 25 communicates with the push-tube chamber through the liquid passage chamber, thereby realizing smooth flow of the syringe during the entire injection process.
  • the top of the outer casing 1 is provided with a mounting ring 26, and the safety cap 32 for covering the needle 33 is mounted on the mounting ring 26, the cavity of the mounting ring 26 is a cylindrical cavity, and the cavity of the mounting ring 26 It is in communication with the cavity of the outer casing 1.
  • the mounting ring is provided with a connector for the installation of the needle safety cap, which effectively prevents the needle from sticking out to the nurse.
  • the liquid-repellent ring 4 includes a main ring body 13 and a liquid-proof flange 12 disposed inside the main ring body 13, and a push step is formed between the main ring body 13 and the liquid-proof flange 12 to push the step and push The portion 20 is fitted such that the top end of the pushing portion 20 is inserted at the pushing step to push the liquid-repellent ring 4.
  • the liquid retaining ring is designed with a main ring body and a liquid-proof flange so that a step is formed between the two.
  • the pusher pushes here to control the positional movement of the liquid-repellent ring. This structural design makes it easier to cooperate with the pusher.
  • the slider 5 is provided with a supporting step 34.
  • the locking seat 3 is provided with a supporting portion 35 that cooperates with the supporting step 34 to support the supporting portion 35 when the pushing portion 20 pushes the liquid-repellent ring 4 to move. Abutting the support step 34 to urge the slider 5 to slide toward the bottom of the push cylinder of the push cylinder.
  • the length setting of the locking seat is required to be adapted to the distance from the clamping head on the slider to the supporting step, so that the clamping head is caught in the locking portion of the locking seat, and the supporting portion of the locking seat is left.
  • the distance of the slider from the fixed portion of the push cylinder is reversed; the connection between the slider and the locking seat is realized, and the function of retracting the slider away from the fixing portion under the driving of the elastic member is retracted.
  • the needle-type safety syringe As shown in FIG. 1 , FIG. 2 , FIG. 3 , FIG. 4 , FIG. 5 , FIG. 6 , FIG. 8 and FIG. 10 , after the needle-type safety syringe is used, the needle is automatically retracted in the push tube 2 as shown in FIG. 3 . The end is locked on the bump 27 of the back plug 7, so that the needle is not exposed, the safety of the nurse is protected, and the exposure of the needle sharpener is prevented, thereby endangering personal safety.
  • the front end of the outer casing 1 is provided with a mounting ring 26, and the mounting ring 26 is disposed around the locking seat 3 and located above the shaped liquid-proof ring 4, and the liquid-proof flange 12 of the shaped liquid-proof ring 4 is The outer diameter protruding portion 11 of the locking seat 3 is tightly fitted.
  • the protruding portion 11 has a flange shape, and the outer diameter of the deformed liquid retaining ring 4 is tightly fitted with the clamping flange 14 at the front end of the outer casing 1.
  • the pusher 2 When in use, the pusher 2 is pushed forward, and the pushing portion 20 pushes the liquid-proof flange 12 of the profiled liquid-repellent ring 4 toward the front end of the conductive-resistance receiving chamber 28, so that the locking seat 3 is disengaged from the profiled liquid-proof ring 4, so that the locking is completed.
  • the seat 3 is not constrained by any objects, and the static elastic member 6 functions at this time, and the slider 5 is fastened to the rear plug 7 together with the locking seat 3 with a standard needle.
  • the top of the push cylinder 2 is over-tightened with the fixing portion 18 of the slider 5, and the slider 5 and the elastic member 6 are pressed and positioned.
  • the top of the slider 5 is as shown in FIG.
  • the locking portion 21 of the clamping head 21 that is over-engaged to the top of the locking seat 3 is clamped and pushed forward.
  • the interference locking seat 3 of the slider 5 starts the repulsive force, so that the fixing portion 18 of the slider 5 is safely disengaged from the pushing cylinder 2 Front end.
  • the slider 5 and the elastic member 6 are mounted on the center of the front end cavity of the push cylinder 2 and the pusher cavity of the push cylinder 2 are mutually tightly fitted, and are pushed forward when the nurse uses it.
  • the chucking head 21 of the slider 5 attached to the front end of the pusher cylinder 2 is in contact with the top end locking portion 22 of the lock seat 3 mounted in the mounting ring 26 of the outer casing 1.
  • a reaction force is applied, and at the same time, as shown in FIG. 3, the chucking head 21 of the slider 5 is forced to be loosely fastened with the top end locking portion 22 of the lock seat 3, and the fixing portion 18 of the slider 5 is disengaged.
  • the slider 5 and the locking seat 3 together with the standard needle and the needle tube are springed into the protrusion 27 of the push barrel 2 and locked to the back plug 7, as shown in FIG. 3, the needle is not exposed, and the nurse is not prevented.
  • the needles of the needles are exposed to stab wounds, which lead to the infection of AIDS, hepatitis B, hepatitis C and other diseases. It is a prominent point of the present invention that the protection of the nurses is safe and the use of the syringes is not harmful to the society.
  • the front end of the outer casing 1 is provided with a mounting ring 26, and the side of the mounting ring 26 and the mounting ring 26 are provided with a guide ring 9 to provide the guiding of the locking seat 3 of FIG.
  • the inner diameter of the guide ring 9 is further provided with a conductive accommodating cavity 28, and the rear end of the conductive accommodating cavity 28 is provided with a clamping flange 14, which provides positioning of the special-shaped liquid-proof ring 4, and the shaped liquid-proof ring 4 is accommodated as a guide during use.
  • the cavity 28 is spatially advanced, and the locking seat 3 and the special-shaped liquid-proof ring 4 are formed independently, and the structure is simple, and is suitable for automatic production.
  • the front end of the locking seat 3 is provided with a protruding portion 11, and the locking portion 3 is further provided with a locking portion 22, and the protruding portion 11 is over-tightened with the special-shaped liquid-proof ring 4.
  • the mounting ring 26 is mounted on the front end of the outer casing 1.
  • the guide ring 9 of the outer casing 1 is slidably engaged to perform positioning.
  • the first limiting step 31 of the protruding portion 11 of the locking seat 3 is received by the rear end surface 29 of the outer guiding ring 9 of the outer casing 1. It is limited to prevent over-heading, and the locking portion 22 is provided at the top end of the locking seat 3 to perform liquid-passing.
  • the liquid flows into the human body through the top locking portion 22 of the locking seat 3.
  • the push cylinder 2 is provided with a pusher cavity and a recess 24, concave
  • the groove 24 is mounted with the piston ring 8 to perform an interference sliding fit with the outer sleeve.
  • the pushing portion of the push cylinder 2 is engaged with the fixing portion 18 of the slider 5 to control the elastic member 6 to release the elastic force, so that the elastic member 6 is used before use.
  • the push cylinder 2 is further provided with a second limit step 15 to provide the cap positioning for the slider 5, the fixing portion 18 and the elastic member 6.
  • the liquid passing groove 25 is provided at the tip end of the slider 5, and the liquid groove of the liquid passing groove 25 is circulated by using the liquid during the injection, after the slider 5
  • the fourth limit step 16 , the sliding wall 17 , the fixing portion 18 and the top end of the clamping head 21 , and the fourth limit step 16 of the slider 5 are arranged to limit the elastic member 6 .
  • the sliding wall 17 is a stepped structure, and the sliding wall 17 is mounted with an elastic member 6 to guide it.
  • the fixing portion 18 and the pushing portion cavity of the pushing cylinder 2 control the elastic member 6 to exert elasticity, and the top clamping head 21 of the slider 5 and the top locking portion 22 of the locking seat 3 are excessively clamped, and when the pushing cylinder 2 is moved toward The front advancement forces the pusher cavity of the pusher 2 out of the fixed portion 18 of the slider 5, and the sliding wall 17 of the slider 5 mounts the elastic member 6 as a guide.
  • the elastic member 6 under static pressure exerts its elasticity immediately, and the slider 5 and the locking seat 3 are attached into the push cylinder 2 together with the standard needle, and the plug 7 is locked in real time.
  • the bump 27 prevents the needle from being exposed.
  • the center plug 27 of the rear plug 7 is installed at the rear end of the push cylinder 2, and the outer diameter of the rear plug 7 is set to the rear end of the push cylinder 2.
  • the fixing portion 18 of the slider 5 mounted on the upper end of the push cylinder 2 is pressed away from the pushing portion cavity of the push cylinder 2, and under the elastic force of the elastic member 6, the slider 5 Together with the locking seat 3 and the standard needle, the bump 27 of the locking rear plug 7 is bounced to prevent the human body from being forced to open, causing the needle to come off the dew and harming the personal safety.

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

Abstract

La présente invention concerne une seringue, comprenant : un manchon externe (1), une bague résistive guide (9) étant disposée sur la partie supérieure de celle-ci; un cylindre de poussée (2) agencé de façon mobile à l'intérieur du manchon externe (1), une cavité de cylindre de poussée étant disposée à l'intérieur du cylindre de poussée (2); un dispositif de coulissement (5) disposé de façon coulissante à l'intérieur de la cavité de cylindre de poussée; une base de verrouillage (3) disposée de façon détachable sur le dispositif de coulissement (5); une pointe d'aiguille (33) montée de façon détachable sur la base de verrouillage (3); et une bague étanche aux liquides (4) formée emmanchée sur la base de verrouillage (3) dans une position réglable, afin de serrer ou de libérer la base de verrouillage (3); une partie de poussée (20) disposée sur l'extrémité supérieure du cylindre de poussée (2) peut pousser la bague étanche aux liquides (4) pour se déplacer dans une cavité de réception résistive guide (28) formée par le manchon externe (1) et la bague de guidage-résistance (9) pour libérer la base de verrouillage (3); après la base de verrouillage (3) et le dispositif coulissant (5) sont verrouillées, la base de verrouillage (3) est entraînée par le dispositif coulissant (5) pour entraîner la pointe d'aiguille (33) pour se rétracter dans la cavité de cylindre de poussée.
PCT/CN2018/117005 2017-12-07 2018-11-22 Seringue WO2019109814A1 (fr)

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CN201711288169.1 2017-12-07
CN201711288169.1A CN108014397B (zh) 2017-12-07 2017-12-07 注射器

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Publication number Priority date Publication date Assignee Title
CN111840709A (zh) * 2020-08-27 2020-10-30 汕头华尔怡医疗器械有限公司 针管结构及具有其的注射器

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101203258A (zh) * 2005-05-12 2008-06-18 尤尼特拉克特注射器公司 改进控制的可回缩注射器及其柱塞
CN101239210A (zh) * 2008-03-21 2008-08-13 杨育和 一种自毁式安全注射器
CN201164634Y (zh) * 2008-03-13 2008-12-17 杨育和 一种自毁式安全注射器
WO2009135439A1 (fr) * 2008-05-08 2009-11-12 Yang Yuhe Seringue de sécurité à autodestruction à usage unique sans fluide résiduel
CN201505347U (zh) * 2009-09-30 2010-06-16 杨育和 一种改进的自毁式安全注射器
CN201684253U (zh) * 2009-04-13 2010-12-29 杨育和 自毁式安全注射器零配件
CN104027874A (zh) * 2014-06-19 2014-09-10 杨育和 一种可换针头式回缩型安全注射器
CN108211051A (zh) * 2018-01-08 2018-06-29 杨德怡 一种可换针头式回缩型安全注射器

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2764418Y (zh) * 2005-01-28 2006-03-15 吴建中 一次性使用安全自毁式注射器
US20080097303A1 (en) * 2006-06-02 2008-04-24 Chih-Hsiung Chen Syringe with retractable needle
CN101284154B (zh) * 2008-05-08 2011-08-31 杨育和 一种自毁式安全注射器
FR2971424B1 (fr) * 2011-02-14 2013-11-29 Marc Brunel Seringue de securite
TWI551319B (zh) * 2012-06-15 2016-10-01 Fan Xiao Yi A push rod with a card retracting structure
US11065394B2 (en) * 2015-07-15 2021-07-20 Guangdong Intmed Medical Appliance Co., Ltd. Syringe with retractable needle

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101203258A (zh) * 2005-05-12 2008-06-18 尤尼特拉克特注射器公司 改进控制的可回缩注射器及其柱塞
CN201164634Y (zh) * 2008-03-13 2008-12-17 杨育和 一种自毁式安全注射器
CN101239210A (zh) * 2008-03-21 2008-08-13 杨育和 一种自毁式安全注射器
WO2009135439A1 (fr) * 2008-05-08 2009-11-12 Yang Yuhe Seringue de sécurité à autodestruction à usage unique sans fluide résiduel
CN201684253U (zh) * 2009-04-13 2010-12-29 杨育和 自毁式安全注射器零配件
CN201505347U (zh) * 2009-09-30 2010-06-16 杨育和 一种改进的自毁式安全注射器
CN104027874A (zh) * 2014-06-19 2014-09-10 杨育和 一种可换针头式回缩型安全注射器
CN108211051A (zh) * 2018-01-08 2018-06-29 杨德怡 一种可换针头式回缩型安全注射器

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CN108014397A (zh) 2018-05-11
CN108014397B (zh) 2019-08-30

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