WO2015079472A1 - Seringue autoprotectrice jetable - Google Patents

Seringue autoprotectrice jetable Download PDF

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Publication number
WO2015079472A1
WO2015079472A1 PCT/JP2013/006950 JP2013006950W WO2015079472A1 WO 2015079472 A1 WO2015079472 A1 WO 2015079472A1 JP 2013006950 W JP2013006950 W JP 2013006950W WO 2015079472 A1 WO2015079472 A1 WO 2015079472A1
Authority
WO
WIPO (PCT)
Prior art keywords
syringe
main body
cylinder
cylindrical main
latch member
Prior art date
Application number
PCT/JP2013/006950
Other languages
English (en)
Japanese (ja)
Inventor
勝也 田口
一博 小澤
Original Assignee
前田産業株式会社
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 前田産業株式会社 filed Critical 前田産業株式会社
Priority to JP2013554732A priority Critical patent/JP5522814B1/ja
Priority to PCT/JP2013/006950 priority patent/WO2015079472A1/fr
Publication of WO2015079472A1 publication Critical patent/WO2015079472A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—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
    • A61M5/326—Fully automatic sleeve extension, i.e. in which triggering of the sleeve 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
    • A61M5/178—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
    • A61M5/326—Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user
    • A61M2005/3261—Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user triggered by radial deflection of the anchoring parts between sleeve and syringe barrel, e.g. spreading of sleeve retaining hooks having slanted surfaces by engagement with conically shaped collet of the piston rod during the last portion of the injection stroke of the plunger
    • A61M2005/3263—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
    • A61M5/178—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
    • A61M5/326—Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user
    • A61M2005/3261—Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user triggered by radial deflection of the anchoring parts between sleeve and syringe barrel, e.g. spreading of sleeve retaining hooks having slanted surfaces by engagement with conically shaped collet of the piston rod during the last portion of the injection stroke of the plunger
    • A61M2005/3264—Trigger provided at the proximal end, i.e. syringe end opposite to needle mounting end

Definitions

  • the present invention relates to disposable self-shielding syringes, and in particular to disposable self-shielding syringes in which the injection needle is shielded by a tubular cover after use of the syringe.
  • Syringes are used in normal medical activities, but if the injection needle installed in the syringe used for treatment is accidentally bitten by a medical worker or waste disposal contractor, pathogens, viruses, etc. may become infected. is there.
  • the needle installed in the syringe used for treatment is inadvertently reused, the patient may be infected with a pathogen, a virus or the like attached to the needle.
  • Patent Document 1 a syringe provided with a protective cover has been proposed.
  • the syringe with the protective cover can slide the protective cover in the longitudinal direction of the syringe.
  • the protective cover of the syringe with the protective cover can be fixed at a position where the injection needle is exposed with respect to the syringe body, and after injecting the patient, the protective cover is attached.
  • the protective cover of the syringe can be fixed at a position where the injection needle shields relative to the syringe body.
  • the syringe with the protective cover can be used safely because the injection needle can be shielded after the injection.
  • a syringe having a protective cover has a cylindrical main body for storing the syringe main body inside, and a cylindrical protective cover which can slide in the longitudinal direction of the syringe main body.
  • a syringe has been proposed in which an external expansion latch member is installed (U.S. Pat. No. 5,958,015).
  • a plunger rod is inserted into the proximal end of the syringe body.
  • An injection needle may be placed at the distal end of the syringe body.
  • the external expansion latch member has a claw on the side of the syringe body, and also has an expansion arm projecting outward of the syringe body in the longitudinal direction of the syringe body. Further, the claw portion of the external expansion latch member is hooked on the proximal end of the cylindrical main body, and the cylindrical protective cover is fixed so as not to move with respect to the cylindrical main body.
  • the external expansion latch member is curved outward with respect to the syringe main body while the doctor or the like injects the patient. .
  • a doctor or the like needs to hold the syringe so as not to prevent this bending, and there are cases where the operation is not easy.
  • JP 2003-225308 A Japanese Patent Publication No. 2003-532500
  • a syringe comprising at least a syringe body, a plunger rod and a needle; A tubular body into which the syringe body is inserted; A shielding cylinder into which the cylindrical main body is inserted and which can be moved in the central axis direction of the cylindrical main body; An annular latch member disposed outside the cylindrical main body and insertable into the inside of the shielding cylinder; A spring material installed on the outside of the cylindrical main body, Equipped with The annular latch member is disposed at an end portion of the annular main body, a latch portion projecting from the annular main body in a direction horizontal to the central axis direction of the cylindrical main body, and an end of the latch portion, and protrudes inside the annular main body And has a claw portion,
  • the shield cylinder has a rear expanded cylinder portion capable of accommodating the latch portion of the annular latch member,
  • the shielding cylinder has a latch release portion which protrudes in the horizontal direction
  • a syringe comprising at least a syringe body, a plunger rod and a syringe needle, A tubular body into which the syringe body is inserted; A shielding cylinder into which the cylindrical main body is inserted and which can be moved in the central axis direction of the cylindrical main body; An annular latch member disposed outside the cylindrical main body and insertable into the inside of the shielding cylinder; A spring material installed on the outside of the cylindrical main body, Equipped with The annular latch member is provided at an annular main body, a latch portion projecting from the annular main body in a direction horizontal to the central axis direction of the annular main body, an end of the latch portion, and a claw projecting to the inside of the annular main body Have a department, The annular latch member is fixed to the tubular body; The shield cylinder has a rear expanded cylinder portion capable of accommodating the latch portion of the annular latch member, The shielding cylinder has a latch release portion which
  • one of the present invention is [2]
  • the shield cylinder does not move relative to the annular latch member
  • one of the present invention is [3]
  • the cylindrical main body has a claw portion protruding to the outside of the cylindrical main body
  • the shield cylinder has a first opening
  • the plunger rod of the syringe can move relative to the syringe body
  • the claw of the tubular body hooks on one end of the first opening of the shield cylinder, whereby the shield cylinder is the cylindrical body
  • the other end of the first opening of the shield cylinder pushes down the claw portion of the cylinder body, whereby the shield cylinder is
  • the disposable self-shielding syringe according to the above [1] or [2], which is movable with respect to the tubular body.
  • one of the present invention is [4]
  • the shield cylinder has a second opening,
  • the claw portion of the cylindrical main body after the other end of the first opening of the shield cylinder pushes down the claw portion of the cylindrical main body, after the shield cylinder becomes movable with respect to the cylindrical main body.
  • the disposable self-shielding syringe as described in the above [3].
  • one of the present invention is [5] The disposable self-shielding syringe according to any one of the above [1] to [4], wherein the shielding cylinder comprises a finger grip.
  • the disposable self-shielding syringe of the present invention is very easy to handle because it can be easily handled with one hand. Moreover, according to the disposable self-shielding syringe of the present invention, it is possible to prevent an accident in which the injection needle installed in the syringe used for the treatment is accidentally stuck on a medical worker, a waste disposal company or the like.
  • FIG. 1 is a schematic cross-sectional view for explaining a syringe used in Example 1.
  • FIG. 2 is a schematic front view for explaining the cylindrical main body 20.
  • FIG. 3 is a schematic side view showing the rear side surface of the cylindrical main body 20.
  • FIG. 4 is a schematic side view showing the front side surface of the cylindrical main body 20.
  • FIG. 5 is a schematic plan sectional view showing the section of the cylindrical main body 20.
  • FIG. It is a model front view for demonstrating the annular latch member installed in the outer side of the said cylindrical main body.
  • FIG. 7 is a schematic side view showing the rear side of the annular latch member.
  • FIG. 8 is a schematic side view showing the front side of the annular latch member.
  • FIG. 1 is a schematic cross-sectional view for explaining a syringe used in Example 1.
  • FIG. 2 is a schematic front view for explaining the cylindrical main body 20.
  • FIG. 3 is a schematic side view showing the rear side surface of the cylindrical main
  • FIG. 9 is a schematic plan view for explaining an annular latch member.
  • FIG. 10 is a schematic front view for explaining the shielding cylinder 40.
  • FIG. 11 is a schematic side view showing the rear side surface of the shield cylinder 40.
  • FIG. 12 is a schematic side view showing the front side of the shield cylinder 40.
  • FIG. 13 is a schematic plan view for explaining the shielding cylinder 40.
  • FIG. 14 is a schematic front sectional view showing the shielding cylinder 40.
  • FIG. FIG. 15 is a schematic plan sectional view showing the shielding cylinder 40.
  • FIG. 16 is an exploded schematic view of the disposable self-shielding syringe 100 according to the first embodiment.
  • FIG. 16 is an exploded schematic view of the disposable self-shielding syringe 100 according to the first embodiment.
  • FIG. 17 is a schematic view of the disposable self-shielding syringe 100 according to the first embodiment.
  • FIG. 18 is a schematic cross-sectional view for explaining a state in which the plunger rod is pushed.
  • FIG. 19 is a schematic cross-sectional view for explaining a state immediately before the latch member is released.
  • FIG. 20 is a schematic cross-sectional view for explaining a state in which the latch member of the shield cylinder is released and the shield cylinder is moved in the front direction of the syringe body.
  • FIG. 1 is a schematic cross-sectional view for explaining a syringe used in Example 1.
  • the syringe 1 used in the first embodiment has a discharge hole 4 in the front 3 and a opening 6 in the rear 5 of the syringe body 2. Further, a collar 7 is provided in the opening 6.
  • the side with the discharge hole 4 is the front, and the side with the opening is the rear. Further, the central axis of the syringe 1 is illustrated by a dashed dotted line aa.
  • the shape of the syringe body 2 may be a circle, a polygon, an ellipse, or the like with reference to a cross section perpendicular to the central axis of the syringe 1.
  • the shape of the syringe body 2 is preferably circular from the viewpoint of preventing stress concentration on a part of the inside of the syringe body 2.
  • the syringe body 2 used in Example 1 is a cylinder, and its cross section is circular.
  • an injection needle, a protective cap and the like can be attached to the discharge hole 4 provided at the tip 3 of the syringe body 2.
  • a circular opening 6 is provided in the rear portion 5 of the syringe body 2, and a drug, a liquid agent, a flexible sealing member or the like can be inserted into the inside of the syringe body 2 from the opening 6.
  • medicines such as liquid medicine can be sucked into the inside of the syringe body 2 from the discharge hole 4 of the syringe body 2.
  • the syringe 1 is preferably a material capable of stably storing a drug such as a liquid drug therein.
  • materials include, for example, inorganic materials such as glass, polyesters such as polycarbonate and polyethylene terephthalate, polyolefins such as polyethylene and polypropylene, and medical polymers such as cyclic polyolefins such as cycloolefin copolymer and cycloolefin polymer And organic materials such as
  • the syringe 1 used in Example 1 comprises a flexible sealing member 8 and a plunger rod 10.
  • the flexible sealing member 8 is connected to the tip of the plunger rod 10 and is inserted into the inside of the syringe body 2.
  • medicines such as a liquid agent in the inside of the syringe body 2 can be discharged from the injection needle installed in the front portion 3 of the syringe body 2.
  • the shape of the front flexible sealing member 8 is a cylinder, and has a protrusion 8 a and a groove 8 b on the side surface.
  • the front flexible sealing member 8 is formed of an organic material such as a medical flexible polymer such as silicone rubber.
  • the cross section of the projecting portion 8 a of the front flexible sealing member 8 is a circle larger than the cross section of the syringe body 2 with reference to a plane perpendicular to the central axis of the syringe body 2.
  • the protrusion 8 a of the front flexible sealing member 8 is contracted in the central axis direction of the syringe body 2.
  • the outer peripheral shape of the front flexible sealing member 8 can be matched with the inner peripheral shape of the syringe main body 2 on the basis of the vertical surface to the central axis of the injection main body 2.
  • the groove portion 8 a in the front flexible sealing member 8 By providing the groove portion 8 a in the front flexible sealing member 8, the contact friction between the outer surface of the front flexible sealing member 8 and the inner surface of the syringe body 2 can be reduced. As a result, the front flexible sealing member 8 can be freely moved in the central axis direction of the injection body 2 inside the syringe body 2.
  • FIG. 2 is a schematic front view for explaining the cylindrical main body 20
  • FIG. 3 is a schematic side view showing the rear side surface of the cylindrical main body 20
  • FIG. 4 is a front view of the cylindrical main body 20.
  • FIG. 5 is a schematic side view showing a side surface
  • FIG. 5 is a schematic plan cross-sectional view showing a cross section of a cylindrical main body 20.
  • the cylindrical main body 20 has an opening 21 at the front of the front cylindrical main body 20 and an opening 22 at the rear.
  • the central axis of the cylindrical main body 20 is illustrated by a dashed dotted line b-b.
  • claws 23 are formed on the cylindrical main body 20. Openings 24 and 24 are provided around the claws 23 and 23 so that the claws 23 and 23 can bend with respect to the cylindrical main body 20. Further, protrusions 25, 25 are provided at the tips of the claws 23, 23.
  • the expanded portions 26, 26 and the expanded portion 27 are installed on the side surface of the cylindrical main body 20, the expanded portions 26, 26 and the expanded portion 27 are installed.
  • the extended portions 26 are disposed on a part of the side surface of the cylindrical main body 20, while the extended portions 27 are disposed on the entire periphery of the side surface of the cylindrical main body 20.
  • the contact area of the inside of the shielding cylinder 40 installed in contact with the outside of the expanded portions 26, 26 of the cylindrical main body 20 and the expanded portion 27 by adjusting the area of the expanded portions 26, 26 and the expanded portion 27 Can be adjusted. If the contact area is increased, the shielding cylinder 40 is less likely to move relative to the cylindrical main body 20, and if the contact area is reduced, the shielding cylinder 40 is more easily moved than the cylindrical main body 20. Become. By adjusting this contact area, it is possible to prevent the shield cylinder 40 from moving relative to the annular latch member 30 while pushing the plunger rod 10 of the syringe 1.
  • an opening 24 a is provided on the side surface of the cylindrical main body 20.
  • a collar portion 28 is installed at the rear of the cylindrical main body 20.
  • fixing projections 29, 29 for fixing the collar 7 of the syringe body 2 are installed in the collar 28.
  • a protrusion 28 a is provided on the outer periphery of the collar 28.
  • the material of the cylindrical main body 20 used in the present invention is, for example, medical materials such as polyesters such as polycarbonate and polyethylene terephthalate, polyolefins such as polyethylene and polypropylene, cyclic polyolefins such as cycloolefin copolymer and cycloolefin polymer Organic materials such as polymers can be mentioned.
  • medical materials such as polyesters such as polycarbonate and polyethylene terephthalate, polyolefins such as polyethylene and polypropylene, cyclic polyolefins such as cycloolefin copolymer and cycloolefin polymer
  • Organic materials such as polymers can be mentioned.
  • FIG. 6 is a schematic front view for explaining an annular latch member installed outside the cylindrical main body
  • FIG. 7 is a schematic side view showing a rear side surface of the annular latch member
  • FIG. It is a model side view showing the front side of an annular latch member.
  • FIG. 9 is a schematic plan sectional view for explaining an annular latch member.
  • the annular latch member 30 includes an annular body 31, a latch 32, claws 33 and an annular projection 34.
  • the latch portion 32 protrudes from the annular main body 31 in the direction parallel to the central axis direction (one-dotted broken line cc) of the annular main body 31.
  • the claw portion 33 is disposed at an end portion of the latch portion 32 and protrudes to the inside of the annular main body 31.
  • the latch portion 32 can be bent in the direction perpendicular to the central axis of the annular main body 31.
  • a groove 34a is provided, to which the projection 28a installed on the outer periphery of the collar 28 of the cylindrical main body 20 can be fitted.
  • the collar portion 28 of the cylindrical main body 20 can be fitted into the inside of the annular projection 34 without a gap.
  • the annular latch member 30 can be fixed to the cylindrical main body 20 by fitting the collar portion 28 of the cylindrical main body 20 to the inside of the annular projection 34 without a gap. Further, even if the spring member 60 is compressed between the annular latch member 30 and the flange portion 28 of the cylindrical main body 20, the annular latch member 30 is fixed to the cylindrical main body 20.
  • the spring member 60 can be maintained in a compressed state as long as the claws 33 of the member 30 do not come off the tip of the spring member 60.
  • FIG. 10 is a schematic front view for explaining the shielding cylinder 40
  • FIG. 11 is a schematic side view showing the rear side surface of the shielding cylinder 40
  • FIG. 12 shows the front side surface of the shielding cylinder 40
  • 13 is a schematic plan view for explaining the shielding cylinder 40
  • FIG. 14 is a schematic front sectional view showing the shielding cylinder 40
  • FIG. It is a schematic plan cross section shown.
  • the shield cylinder 40 has a shield cylinder main body 41, finger grips 42, first openings 43, 43, and second openings 44, 44. Further, the shield cylinder main body 41 is provided with a rear expanded cylinder portion 45 having an inner diameter larger than the inner diameter of the shield cylinder main body at the rear of the finger grip 42. Further, a connecting portion 46 is installed in the rear expanded cylindrical portion 45, and latch release portions 47, 47, 47, 47 project from the connecting portion 46 in the horizontal direction of the central axis of the cylindrical main body 20. Further, the annular latch member 30 can be inserted into the rear expanded cylindrical portion 45 of the shielding cylinder 40.
  • the front shield cylinder 40 also has an opening 48 at the front and an opening 49 at the rear.
  • FIG. 16 is an exploded schematic view of the disposable self-shielding syringe 100 according to the first embodiment
  • FIG. 17 is a schematic view of the disposable self-shielding syringe 100 according to the first embodiment.
  • the syringe 1 is inserted into the tubular body 20.
  • the outer surface of the syringe body 2 of the syringe 1 substantially coincides with the inner surface of the rear opening 22 of the tubular body 20. Therefore, the syringe main body 2 can be inserted into the inside of the cylindrical main body 20.
  • the inner width of the rear end protrusions 27, 27 of the cylindrical main body 20 substantially matches the width of the collar 7 of the syringe main body 2. For this reason, the syringe body 2 is fixed to the cylindrical main body 20 by rotating and fitting the collar portion 7 of the syringe main body 2 between the rear end protrusions 28, 28 of the cylindrical main body 20. Can.
  • the spring member 60 is inserted to the outside of the cylindrical main body 20. Since the spring member 60 is in contact with the collar 28 of the cylindrical main body 20, the spring member 60 is positioned before the position of the collar 28 of the cylindrical main body 20 even when the spring material 60 is compressed. Will be installed.
  • the cylindrical main body 20 is inserted into the annular latch member 30.
  • a claw 33 protrudes inside the annular latch member 30, and the claw 33 is hooked on the tip of the spring member 60.
  • the inner diameter of the shielding cylinder main body 41 of the shielding cylinder 40 is smaller than the outer diameter of the spring member 60. Therefore, the spring member 60 can be compressed between the shield cylinder main body 41 and the collar portion 26 of the cylindrical main body 20.
  • the spring member 60 When the annular latch member 30 is pushed toward the flange portion 28 of the cylindrical main body 20, the spring member 60 is maintained while the claw portion 33 of the annular latch member 30 is held on the tip of the spring member 60. It is compressed. Further, when the annular latch member 30 is pushed to the flange 28 side of the cylindrical main body 20, the ridge 34 of the cylindrical main body 20 is formed in the groove 34 a installed inside the annular projection 34 of the annular latch member 30. The projections 28a provided on the outer periphery of the are fitted together.
  • the shapes of the inner side of the annular projection 34 of the annular latch member 30 and the outer shape of the flange 28 of the cylindrical main body substantially coincide with each other, and the annular main body 31 of the annular latch member 30 and the cylindrical main body
  • the flange portion 28 can be installed without any gap.
  • the protrusion 28 a and the groove 34 a are fitted to each other, the annular latch member 30 and the cylindrical main body 20 are fixed to each other, and the compressed state of the spring member 60 can be maintained.
  • the shielding cylinder 40 is inserted to the outside of the cylindrical main body 20.
  • the inside of the shielding cylinder main body 41 of the shielding cylinder 40 and the outside of the expanded portions 26, 26 and the expanded portion 27 of the side surface of the cylindrical main body 20 can contact each other, and the central axis direction of the cylindrical main body 20 In addition, the shield cylinder 40 can be moved. Further, since the inner diameter of the rear expanded cylindrical portion 45 of the shielding cylinder 40 is larger than the outer diameter of the spring member 60 and the annular latch member 30, the spring member 60 and the annular latch member 30 are expanded to the rear of the shielding cylinder 40 It can be inserted inside the cylindrical portion 45.
  • the shielding cylinder 40 When the shielding cylinder 40 is inserted to the outside of the cylindrical main body 20, the claws 25 of the cylindrical main body 20 are hooked on the first openings 43, 43 of the shielding cylinder 40, respectively, and the shielding cylinder 40 is And the cylindrical main body 20 are fixed. In the cylindrical main body 20 and the shielding cylinder 40, since the claws 25 of the cylindrical main body 20 hang on the first openings 43 of the shielding cylinder 40, respectively, the shielding cylinder 40 can maintain the state of not moving in the central axis direction of the cylindrical main body 20.
  • the injection needle 70 installed at the front portion 3 of the syringe main body 2 of the syringe 1 is a front opening of the shield cylinder 40.
  • the portion 47 is exposed to the outside of the shielding cylinder 40.
  • FIG. 18 is a schematic cross-sectional view for explaining a state in which the plunger rod is pushed
  • FIG. 19 is a schematic cross-sectional view for explaining a state just before the latch member is released
  • FIG. 20 is a schematic cross-sectional view for explaining a state in which the latch member of the shield cylinder is released and the shield cylinder is moved in the front direction of the syringe body.
  • the tip of the plunger rod 10 abuts on the tip of the syringe body 2 through the flexible sealing member 8. After the tip of the plunger rod 10 abuts on the tip of the syringe body 2, the plunger rod 10 can not be moved relative to the syringe body 2. While the plunger rod 10 can be moved with respect to the syringe body 2, the shield cylinder 40 maintains a fixed state with respect to the cylindrical body 20.
  • the shield cylinder 40 can be pulled towards the rear of the syringe body 10.
  • the shield cylinder 40 can be pulled toward the rear of the syringe body 10 by pushing the flange 11 of the plunger rod 10 with a thumb and pulling the finger grip 42 with a forefinger and a middle finger.
  • the shield cylinder 40 When the shield cylinder 40 is pulled toward the rear of the syringe body 10, the other end of the first opening 43 of the shield cylinder 40 which is not in contact with the claws 23 of the cylindrical main body 20.
  • the claw portion 23 of the cylindrical main body 20 When the claw portion 23 of the cylindrical main body 20 is pushed down, the claw portion 23 of the cylindrical main body 20 is disengaged from the first opening 43 of the shielding cylinder 40, and the shielding cylinder 40 becomes the cylindrical main body. It can move relative to it. Further, the latch release portion 47 on the inner side of the shield cylinder 40 spreads the claw portion 33 of the annular latch member 30.
  • the shield cylinder 40 when the shield cylinder 40 is pushed forward by the repulsive force of the spring member 60, the shield cylinder 40 is positioned forward with respect to the central axis direction of the cylindrical main body 20. Move in the direction. The claws 23, 23 of the cylindrical main body 20 hang on the second openings 44, 44 of the shielding cylinder 40 so that the shielding cylinder 40 stops its movement, and the shielding cylinder 40 has the cylindrical shape. It is fixed to the main body 20. In a state in which the shielding cylinder 40 is fixed to the cylindrical main body 20, the shielding cylinder 40 shields the injection needle 70 installed at the front of the syringe 1.
  • the disposable self-shielding syringe 100 automatically uses the liquid drug 80 inside the syringe 1 and then automatically pulls the injection needle 70 when the shield cylinder 40 is pulled toward the rear of the syringe body 10. Can be shielded.
  • the disposable self-shielding syringe 100 can be easily operated with one hand, and the injection needle 70 is shielded by the shielding cylinder 40 after use, so that the injection needle 70 is a medical worker, a waste disposal company, etc. It is possible to reduce the sting accident.
  • the single-use syringe of the present invention can be easily handled with one hand, and therefore, it can be widely applied to medical research activities in medical institutions, research institutes such as universities, etc., treatment for non-human animals such as pets, medical research activities. can do.

Abstract

[Problème] Produire une seringue autoprotectrice jetable qui peut être manipulée aisément d'une main. [Solution] La présente invention concerne une seringue autoprotectrice jetable comprenant : une seringue pourvue d'au moins un corps principal de seringue, une tige de piston, et une aiguille; un corps principal tubulaire; un tube de protection; un élément de verrouillage circulaire; et un matériau résilient. Une partie de crochet de l'élément de verrouillage circulaire s'associe sur une extrémité du matériau résilient, de manière à comprimer le matériau résilient entre une bride du corps principal tubulaire et la partie de crochet de l'élément de verrouillage circulaire, et exposer l'aiguille disposée dans une partie avant du corps principal de seringue depuis le tube de protection. Lorsque le type de protection est tiré vers une partie arrière du corps principal de seringue, une partie de libération de verrouillage du tube de protection repousse la partie de crochet de l'élément de verrouillage circulaire vers l'extérieur de l'élément de verrouillage circulaire, de manière à libérer la partie de crochet de l'élément de verrouillage circulaire du matériau résilient, et le tube de protection se déplace dans une direction pour protéger l'aiguille par la résilience du matériau résilient, de sorte que l'aiguille disposée dans la partie avant du corps principal de seringue soit protégée par le tube de protection.
PCT/JP2013/006950 2013-11-27 2013-11-27 Seringue autoprotectrice jetable WO2015079472A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2013554732A JP5522814B1 (ja) 2013-11-27 2013-11-27 使い捨て自己遮蔽注射器
PCT/JP2013/006950 WO2015079472A1 (fr) 2013-11-27 2013-11-27 Seringue autoprotectrice jetable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2013/006950 WO2015079472A1 (fr) 2013-11-27 2013-11-27 Seringue autoprotectrice jetable

Publications (1)

Publication Number Publication Date
WO2015079472A1 true WO2015079472A1 (fr) 2015-06-04

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PCT/JP2013/006950 WO2015079472A1 (fr) 2013-11-27 2013-11-27 Seringue autoprotectrice jetable

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JP (1) JP5522814B1 (fr)
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11319090A (ja) * 1998-04-17 1999-11-24 Becton Dickinson & Co 医療装置及びその遮蔽体装置
JP4354915B2 (ja) * 2002-11-06 2009-10-28 ベクトン・ディキンソン・アンド・カンパニー 注射器具用受動安全シールドシステム
WO2013065597A1 (fr) * 2011-10-31 2013-05-10 株式会社スズケン Seringue

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11319090A (ja) * 1998-04-17 1999-11-24 Becton Dickinson & Co 医療装置及びその遮蔽体装置
JP4354915B2 (ja) * 2002-11-06 2009-10-28 ベクトン・ディキンソン・アンド・カンパニー 注射器具用受動安全シールドシステム
WO2013065597A1 (fr) * 2011-10-31 2013-05-10 株式会社スズケン Seringue

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JPWO2015079472A1 (ja) 2017-03-16
JP5522814B1 (ja) 2014-06-18

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