WO2014033902A1 - Aiguille à ailettes - Google Patents

Aiguille à ailettes Download PDF

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Publication number
WO2014033902A1
WO2014033902A1 PCT/JP2012/072125 JP2012072125W WO2014033902A1 WO 2014033902 A1 WO2014033902 A1 WO 2014033902A1 JP 2012072125 W JP2012072125 W JP 2012072125W WO 2014033902 A1 WO2014033902 A1 WO 2014033902A1
Authority
WO
WIPO (PCT)
Prior art keywords
needle
protector
wings
wing
winged needle
Prior art date
Application number
PCT/JP2012/072125
Other languages
English (en)
Japanese (ja)
Inventor
五十嵐政嗣
Original Assignee
テルモ株式会社
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 テルモ株式会社 filed Critical テルモ株式会社
Priority to PCT/JP2012/072125 priority Critical patent/WO2014033902A1/fr
Priority to JP2014532673A priority patent/JPWO2014033902A1/ja
Publication of WO2014033902A1 publication Critical patent/WO2014033902A1/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
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/162—Needle sets, i.e. connections by puncture between reservoir and tube ; Connections between reservoir and tube
    • A61M5/1626—Needle protectors therefor
    • 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
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
    • 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
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
    • A61M2005/1586—Holding accessories for holding infusion needles on the body
    • 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

Definitions

  • the present invention relates to a winged needle used for blood collection, blood transfusion, infusion, and the like.
  • a winged needle in which a wing is provided on a needle hub to make it easier to handle is known. When discarding the winged needle after use, it is necessary to cover the needle body in order to prevent the disposal operator from inadvertently touching the needle body. Therefore, conventionally, a winged needle having a protector capable of covering the used needle body has been proposed.
  • this type of protector there is one provided with a pair of slits that extend in the axial direction and into which a wing can be inserted (see, for example, JP-A-8-206195).
  • the protector is moved in the distal direction along the tube connected to the proximal end of the needle body, and a wing is inserted into the slit of the protector so that the needle body is completely covered by the protector.
  • Japanese Patent No. 4182756 proposes a needle cover having an opening on the tip side inclined with respect to the axis of the needle cover. While holding the needle cover, pull the proximal conduit connected to the proximal end of the winged needle toward the proximal side, and the proximal edge of the winged needle on the left and right sides of the distal end opening of the needle cover Are in contact with each other, and the wing portion is folded and accommodated in the needle cover.
  • the needle cover having an inclined distal end opening disclosed in Japanese Patent No. 4182756, the needle cover and the needle cover are arranged so that the proximal end side edge of the wing portion is in contact with both side surfaces of the inclined distal end opening. It is necessary to adjust the direction of the winged needle, that is, there is directivity, and the accommodation operation of the winged needle is troublesome.
  • the present invention has been made in view of such problems, and an object thereof is to provide a winged needle that can be accommodated in a protector with a simple operation.
  • a needle body having a needle tip at the tip, and a wing member attached to the needle body, and after use, is inserted into the protector from the tip opening of the protector, and the needle A winged needle that is covered with the body and is accommodated in the protector in a state where the wing member is folded, wherein the wing member includes a shaft portion fixed to the needle body, and an opposite direction from the shaft portion.
  • a pair of elastically deformable wings each of the pair of wings being inclined so that a proximal end side edge thereof approaches the shaft portion side toward the proximal end direction.
  • a protector having a circular tip opening perpendicular to the extending direction of the protector can be used as a protector that accommodates the winged needle, and the wing shape when the winged needle is accommodated in the protector. There is no directionality (directivity) around the axis of the needle.
  • the winged needle can be reliably and easily accommodated in the protector by the operation of drawing the winged needle into the protector. Further, in the present invention, when the winged needle is pulled into the protector, the stepped portion is not easily caught by the tip opening of the protector. Therefore, it can be accommodated more smoothly.
  • a portion of the stepped portion that is continuous with the base end side edge may be formed to draw an arc. According to this configuration, a portion of the stepped portion that is continuous with the proximal end edge is not easily caught by the tip opening of the protector. Therefore, it can be accommodated more smoothly.
  • a portion that continues from the outer edge of the wing to the proximal edge may be formed to draw an arc. According to this configuration, when the winged needle is pulled into the protector, the portion that continues from the outer edge of the wing to the proximal edge is less likely to be caught by the tip opening of the protector. Therefore, it can be accommodated more smoothly.
  • FIG. 3A is a partial plan view of the winged needle in the winged needle assembly shown in FIG. 1
  • FIG. 3B is a cross-sectional view taken along line IIIB-IIIB in FIG. 3A.
  • FIG. 7 is a plan view showing a winged needle provided with a wing member according to a modification.
  • FIG. 1 is a plan view of a winged needle assembly 10 including a winged needle 12 according to an embodiment of the present invention.
  • FIG. 2 is an exploded perspective view of the winged needle assembly 10.
  • the winged needle assembly 10 includes a winged needle 12 that is punctured by a patient, and a protector 14 that is attached to the winged needle 12 and accommodates the winged needle 12 after the use of the winged needle 12.
  • the winged needle assembly 10 is used by fixing the winged needle 12 in a state where the winged needle 12 is punctured into a patient's skin during blood collection, blood transfusion, infusion, or the like.
  • the winged needle 12 includes a needle body 16 and a wing member 18 attached to the needle body 16.
  • the needle body 16 includes a needle body 20 having a sharp needle tip 20a and a multistage cylindrical hub 22 fixed to the proximal end side of the needle body 20, and is configured as a needle assembly.
  • the needle body 20 is a portion that is punctured into the skin of a patient undergoing treatment such as blood collection, blood transfusion, and infusion, and is configured in a circular tube shape having a hollow portion that serves as a flow path for body fluid such as blood or infusion.
  • An opening 20 b that functions as a liquid inlet / outlet is formed at the tip of the needle body 20.
  • the needle body 20 can be made of, for example, a metal material such as stainless steel, aluminum or an aluminum alloy, titanium or a titanium alloy, or a hard resin.
  • the hub 22 is a hollow cylindrical member connected to the proximal end of the needle body 20 and supports the needle body 20.
  • the hub 22 includes a large-diameter portion 22a that forms the distal end side, and a small-diameter portion 22b that extends from the large-diameter portion 22a in the proximal direction and has a smaller outer diameter than the large-diameter portion 22a.
  • the hub 22 can be made of a hard resin such as polyvinyl chloride, polyethylene, or polycarbonate.
  • the proximal end portion of the small diameter portion 22b protrudes from the proximal end of the wing member 18 and is connected to one end of a long tube 24 having flexibility.
  • the other end of the tube 24 is connected to a container such as a blood transfusion bag, a blood collection bag, or an infusion bag (not shown).
  • a cap 26 is attached to the winged needle 12 before the winged needle assembly 10 is used.
  • the cap 26 has a hollow cylindrical shape that can accommodate the needle body 20 therein, and covers the needle body 20 by fitting the distal end side (large diameter portion 22a) of the hub 22 on the proximal end side. Mounted in a state. When the winged needle assembly 10 is used, the cap 26 can be detached from the winged needle 12 by pulling the cap 26 in the distal direction, and the needle body 20 can be exposed.
  • the wing member 18 includes a hollow shaft portion 28 and a pair of elastically deformable plate-like wings 30a and 30b extending from the lower portion of the shaft portion 28 to the left and right.
  • the small diameter portion 22 b of the hub 22 described above is inserted into the shaft portion 28.
  • the shaft portion 28 is rotatable with respect to the hub 22, whereby the needle body 16 and the wing member 18 are relatively rotatable.
  • the wings 30a and 30b have flexibility and can be opened and closed (folded) when the vicinity of the root portion is bent or curved.
  • the wings 30a and 30b are configured between the outer wing part 31 constituting the outer side, the thin part 32 constituting the root side and being thinner than the outer wing part 31, and the outer wing part 31 and the thin part 32. And a stepped portion 34.
  • the wings 30a and 30b can be easily opened and closed.
  • the thin part 32 is formed when the upper surface of the base side of the wings 30a and 30b is dented.
  • each of the pair of wings 30a and 30b has a proximal end edge 36 at the proximal end so that the wings 30a and 30b are easily folded when the winged needle 12 is accommodated in the protector 14. It inclines so that it may approach the axial part 28 side as it goes to a direction.
  • the inclination angle ⁇ of the base end edge 36 with respect to the plane S1 perpendicular to the axis a is, for example, about 5 to 30 °, preferably 10 to 25 °, and more preferably 20 °.
  • the inclination angle ⁇ is too small, the wings 30 a and 30 b are not easily folded when being accommodated in the protector 14.
  • the inclination angle ⁇ is too large, the areas of the wings 30a and 30b become small, and it is difficult to grip the wings 30a and 30b.
  • the axis a is an axis common to the needle body 16 and the shaft portion 28.
  • the outer portions of the wings 30a and 30b are connected to the proximal end edge 36 from the outer edge 37 of the wings 30a and 30b so that the outer portions of the wings 30a and 30b are not caught by the tip opening 40 of the protector 14.
  • the portion 38 is formed so as to draw a gentle arc (curve) in plan view.
  • the radius of curvature of the portion 38 formed to draw an arc is, for example, about 1 to 10 mm, and preferably about 6 to 8 mm.
  • the stepped portion 34 gradually increases in thickness from the thin portion 32 side toward the outer wing portion 31 side. So as to be inclined.
  • the inclination angle ⁇ of the step portion 34 is, for example, about 30 to 60 ° with respect to the surface S2 on which the wings 30a and 30b extend, and preferably about 45 °.
  • the inclination of the stepped portion 34 only needs to be provided at least at the base end of the stepped portion 34, and portions other than the base end of the stepped portion 34 are perpendicular to the surface S2 on which the wings 30a and 30b extend. It may be a step that rises.
  • the portion (base end of the stepped portion 34) that is continuous with the base end side edge 36 in the stepped portion 34 is chamfered so as to draw an arc in plan view. Is formed.
  • the radius of curvature of the portion formed so as to draw an arc is, for example, about 0.5 to 3 mm, and preferably about 1 to 2 mm.
  • the stepped portion 34 approaches the outer end side of the wings 30a, 30b toward the distal end so that the wings 30a, 30b are easily folded when the winged needle 12 is pulled into the protector 14. It is inclined with respect to the axis a.
  • the inclination angle ⁇ is, for example, 1 to 20 °, and more preferably 15 °. If the inclination angle ⁇ is too large, the area of the thin portion 32 increases and the wings 30a and 30b become too soft, making it difficult to puncture the patient.
  • the wing member 18 may be made of a soft resin material so that the base sides (thin wall portions 32) of the wings 30a and 30b are bent and have appropriate flexibility that can be easily opened and closed.
  • the wing member 18 may be formed by separately manufacturing the shaft portion 28 made of a hard resin material and the wings 30a and 30b made of a soft resin material, and combining them.
  • the protector 14 is displaceable in the direction of the axis a with respect to the winged needle 12, and covers the needle tip 20 a and the wing member 18 of the needle body 20 when moving in the distal direction relative to the winged needle 12. is there.
  • the protector 14 is a hollow cylindrical member and has a circular tip opening 40 perpendicular to the axial direction (extending direction) thereof.
  • the base end wall of the protector 14 is provided with an insertion hole 42 through which the tube 24 is inserted, and the protector 14 can be displaced along the tube 24.
  • the full length of the protector 14 is longer than the full length of the winged needle 12, and the winged needle 12 is accommodated at the deepest position in the protector 14 with the wings 30 a and 30 b folded, and the needle body 20 of the winged needle 12.
  • the needle tip 20 a is on the proximal end side with respect to the distal end opening 40 of the protector 14. That is, the needle tip 20a does not protrude from the tip opening 40.
  • the material of the protector 14 is not particularly limited as long as the wing-like needle 12 with the wings 30a and 30b folded is accommodated therein and has an appropriate rigidity enough to support the reaction force from the wings 30a and 30b.
  • a transparent or translucent material is preferable because the retracted position of the winged needle 12 and the folded state of the wings 30a and 30b can be confirmed. Examples of such a transparent or translucent material include polyethylene, polypropylene, polycarbonate, acrylic resin, and the like.
  • the protector 14 includes a tapered portion 44 whose inner diameter decreases from the distal end opening 40 toward the proximal end side, and a parallel portion 46 that is connected to the proximal end side of the tapered portion 44 and has a constant inner diameter. More specifically, the taper portion 44 includes a first taper portion 44a on the distal end opening 40 side and a second taper portion 44b whose inner diameter decreases toward the proximal end with a gentler inclination than the first taper portion 44a. And have. The length of the second taper portion 44b in the axial direction is longer than that of the first taper portion 44a.
  • the inner peripheral edge 40 a of the distal end opening 40 is chamfered so that the inner diameter decreases toward the proximal end so that the wings 30 a and 30 b can be easily pulled into the protector 14. ing.
  • the winged needle assembly 10 including the winged needle 12 according to the present embodiment is basically configured as described above, and the operation and effect thereof will be described below.
  • the cap 26 is removed from the winged needle 12 to expose the needle body 16.
  • the pair of wings 30a and 30b are picked with fingers and closed (folded). Specifically, the thin portions 32 of both wings 30a and 30b are bent and closed so that one wing 30a and the other wing 30b overlap each other.
  • the needle body 16 is punctured into the living body while holding the closed wings 30a and 30b with fingers.
  • the wings 30a and 30b are returned to the opened state, and the wings 30a and 30b are fixed to the skin with an adhesive tape or the like.
  • the protector 14 prevents the needle 16 from being inadvertently touched by a medical worker such as a person who discards the winged needle assembly 10.
  • the “accommodating operation” is performed to cover and accommodate the winged needle 12 including.
  • the winged needle 12 is retracted with respect to the protector 14 by pulling the tube 24 toward the proximal end while holding the protector 14 (the protector 14 is moved in the distal direction relative to the winged needle 12). ) Then, first, as shown in FIG. 4, the proximal end edges 36 of the wings 30 a and 30 b of the winged needle 12 abut on the distal end opening 40 of the protector 14. When the tube 24 is further pulled in the proximal direction from this state, as shown in FIG. 5, the wings 30a and 30b are drawn into the protector 14 while being folded so that the outer wing portion 31 faces the needle tip 20a side. start.
  • the base end side edge 36 of the wings 30a and 30b is inclined so as to approach the shaft portion 28 side toward the base end side (see FIGS. 1 and 3A). Since the deformation of the wings 30a and 30b is promoted, the wings 30a and 30b are easily pulled into the protector 14. 5 shows a state in which both wings 30a and 30b are deformed to the back side, conversely, both wings 30a and 30b may be deformed to the front side. In addition, one of the wings 30a and 30b may be deformed to the front side and the other may be deformed to the back side.
  • tip opening part 40 of the protector 14 is chamfered so that an internal diameter may reduce toward a base end side (refer FIG. 1), the base end of wings 30a and 30b In combination with the inclination of the side edge 36, the wings 30 a and 30 b are easily pulled into the protector 14.
  • the step portions 34 provided on the wings 30a and 30b are located outside. Therefore, after the wings 30a and 30b begin to be pulled into the protector 14, the stepped portion 34 (particularly the base end thereof) comes into contact with the distal end opening 40 of the protector 14 in due course.
  • the stepped portion 34 is provided with an inclination with respect to the surface S2 of the wings 30a and 30b (see FIG. 3B), so that the stepped portion 34 (particularly the base end thereof) is not easily caught by the distal end opening 40. Therefore, the wings 30a and 30b can be smoothly drawn into the protector 14.
  • the stepped portion 34 is inclined with respect to the axis a so as to approach the outer end side of the wings 30a and 30b as it goes in the distal direction (see FIG. 3A).
  • the area of the thin part 32 is ensured large. For this reason, the softness
  • the region on the front end side of the thin portion 32 is expanded closer to the outer end side of the wings 30a and 30b as compared with the case where there is no inclination. For this reason, as shown in FIG. 5, the wings 30a and 30b are easily bent toward the needle tip 20a, and the pull-in resistance during the housing operation can be suitably reduced.
  • the outer wings 31 of the wings 30a and 30b come into contact with the tip opening 40 of the protector 14 this time.
  • the part 38 which continues from the outer edge 37 of the wings 30a and 30b to the base end edge 36 is formed so that an arc may be drawn, of the wings 30a and 30b
  • the outer wing 31 is not easily caught by the tip opening 40 of the protector 14. Therefore, the wings 30a and 30b can be smoothly drawn into the protector 14.
  • the wings 30 a and 30 b are positioned in the parallel part 46 of the protector 14, and the needle tip 20 a of the winged needle 12 is the tip opening of the protector 14. It will be in the state located in the base end side rather than 40. That is, the needle tip 20a does not protrude from the tip opening 40 of the protector 14, and the user cannot touch the needle tip 20a. In this case, since the wings 30a and 30b are stretched outward in the parallel portion 46 by their own elastic force, the winged needle 12 moves in the distal direction with respect to the protector 14, and the needle tip 20a is moved from the protector 14 again. Protruding is preferably suppressed.
  • the base end side edge 36 of the wings 30a and 30b is inclined, so that the winged needle 12 is pulled into the protector 14 at an initial stage.
  • the deformation (folding) of the wings 30a and 30b is promoted by the action of the inclination. Accordingly, the wings 30a and 30b are drawn into the protector 14 while being deformed, and thereby the wings 30a and 30b are accommodated in the protector 14 in a folded state.
  • the tip opening 40 of the protector 14 has a circular shape perpendicular to the axis a, there is no directionality (directivity) about the axis a of the wing needle 12 when the wing needle 12 is accommodated in the protector 14. .
  • the winged needle 12 can be reliably and easily accommodated in the protector 14 by the operation of drawing the winged needle 12 into the protector 14.
  • the portion of the wings 30a, 30b that extends from the outer edge 37 to the proximal edge 36 is formed to draw an arc. Therefore, when the winged needle 12 is pulled into the protector 14, The corner is not easily caught by the tip opening 40 of the protector 14. Therefore, it can be accommodated more smoothly.
  • At least the base end of the step part 34 between the outer wing part 31 and the thin part 32 is inclined so as to gradually become thicker from the thin part 32 side toward the outer wing part 31 side. Therefore, when the winged needle 12 is pulled into the protector 14, the stepped portion 34 is not easily caught by the tip opening 40 of the protector 14. Therefore, it can be accommodated more smoothly.
  • the portion of the step portion 34 that is connected to the base end side edge 36 is formed so as to draw an arc, so that the portion is not easily caught by the distal end opening 40 of the protector 14. Therefore, it can be accommodated more smoothly.
  • the stepped portion 34 between the outer wing portion 31 and the thin portion 32 is inclined with respect to the axis a so as to approach the outer end side of the wings 30a and 30b toward the tip direction.
  • the wings 30a and 30b are easily folded. Therefore, it can be accommodated more smoothly.
  • the wings 30a and 30b can be drawn into the protector 14 more smoothly.
  • the protector 14 includes a tapered portion 44 whose inner diameter decreases from the distal end opening 40 toward the proximal end side, and a parallel portion 46 that is connected to the proximal end side of the tapered portion 44 and has a constant inner diameter.
  • the wings 30a and 30b can be smoothly folded by the taper portion 44, and the wing 30a and the wing 30a that are about to spread by the elastic force are formed in the parallel portion 46.
  • the winged needle 12 can be prevented from moving in the distal direction with respect to the protector 14.
  • a winged needle 12a provided with a wing member 18a according to a modification shown in FIG.
  • the wing member 18a is the same as the wing member 18 in the following points.
  • the base end side edge 36 of the wings 30a and 30b is inclined so as to approach the shaft portion 28 side toward the base end direction.
  • a portion 38 extending from the outer edge 37 to the proximal edge 36 of the wings 30a and 30b is formed to draw an arc.
  • the step 34 a between the outer wing 31 and the thin portion 32 is inclined so as to gradually increase in thickness from the thin portion 32 side toward the outer wing portion 31 side.
  • a portion connected to the base end side edge 36 in the stepped portion 34a is formed to draw an arc.
  • the wing member 18 a differs from the wing member 18 in that the stepped portion 34 a extends in parallel with the shaft portion 28.
  • the base end side edge 36 of the wings 30a and 30b is inclined so as to approach the shaft portion 28 side toward the base end direction.
  • the deformation of the wings 30a and 30b in the initial stage of drawing into the protector 14 can be promoted, and the wings 30a and 30b can be smoothly introduced into the protector 14. Therefore, the operation of accommodating the winged needle 12a in the protector 14 can be easily performed.
  • the winged needle 12 a is pulled into the protector 14, the portion 38 that continues from the outer end edge 37 of the wings 30 a and 30 b to the base end side edge 36 is not easily caught by the distal end opening 40 of the protector 14. Since the stepped portion 34a is inclined with respect to the surfaces of the wings 30a and 30b, the stepped portion 34a is not easily caught by the tip opening 40 of the protector 14.

Landscapes

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

Abstract

L'invention concerne une aiguille à ailettes (12), qui comprend un corps d'aiguille (16) et un élément d'ailette (18). L'élément d'ailette (18) a une tige (28) fixée au corps d'aiguille (16) et une paire d'ailettes élastiquement déformables (30a, 30b) s'étendant dans des directions mutuellement opposées de la tige (28). L'extrémité côté base (36) de chacune de la paire d'ailettes (30a, 30b) est inclinée de façon à se rapprocher de la tige (28) vers la direction de base. Les ailettes (30a, 30b) ont une partie d'ailette externe (31), une partie mince (32) et une partie de marche (34, 34a) entre elles. Au moins l'extrémité de base de la partie de marche (34, 34a) est inclinée de façon à être progressivement plus épaisse du côté de la partie mince (32) au côté de la partie d'ailette externe (31).
PCT/JP2012/072125 2012-08-31 2012-08-31 Aiguille à ailettes WO2014033902A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2012/072125 WO2014033902A1 (fr) 2012-08-31 2012-08-31 Aiguille à ailettes
JP2014532673A JPWO2014033902A1 (ja) 2012-08-31 2012-08-31 翼状針

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2012/072125 WO2014033902A1 (fr) 2012-08-31 2012-08-31 Aiguille à ailettes

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WO2014033902A1 true WO2014033902A1 (fr) 2014-03-06

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PCT/JP2012/072125 WO2014033902A1 (fr) 2012-08-31 2012-08-31 Aiguille à ailettes

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JP (1) JPWO2014033902A1 (fr)
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0385043U (fr) * 1989-12-20 1991-08-28
JP2008073238A (ja) * 2006-09-21 2008-04-03 Nipro Corp 留置針
JP4182756B2 (ja) * 2000-10-06 2008-11-19 株式会社ジェイ・エム・エス 翼引込み式誤穿刺防止具、および該誤穿刺防止具を備えた翼付き針

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0385043U (fr) * 1989-12-20 1991-08-28
JP4182756B2 (ja) * 2000-10-06 2008-11-19 株式会社ジェイ・エム・エス 翼引込み式誤穿刺防止具、および該誤穿刺防止具を備えた翼付き針
JP2008073238A (ja) * 2006-09-21 2008-04-03 Nipro Corp 留置針

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JPWO2014033902A1 (ja) 2016-08-08

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