WO2019097621A1 - Aiguille d'injection - Google Patents

Aiguille d'injection Download PDF

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Publication number
WO2019097621A1
WO2019097621A1 PCT/JP2017/041226 JP2017041226W WO2019097621A1 WO 2019097621 A1 WO2019097621 A1 WO 2019097621A1 JP 2017041226 W JP2017041226 W JP 2017041226W WO 2019097621 A1 WO2019097621 A1 WO 2019097621A1
Authority
WO
WIPO (PCT)
Prior art keywords
injection needle
tip
cylindrical portion
distal end
axial direction
Prior art date
Application number
PCT/JP2017/041226
Other languages
English (en)
Japanese (ja)
Inventor
典雄 宮城
Original Assignee
典雄 宮城
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 典雄 宮城 filed Critical 典雄 宮城
Priority to PCT/JP2017/041226 priority Critical patent/WO2019097621A1/fr
Publication of WO2019097621A1 publication Critical patent/WO2019097621A1/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

Definitions

  • the present invention relates to an injection needle attached to the tip of a syringe.
  • the injection needle described in U.S. Pat. No. 5,478,328 comprises a shaft 1, a tapered region 2, a solid tip 3, a tubular passage 4 and a concave opening 5, In particular, FIG. 3 m, FIG. As described in 3o, when a plurality of openings 5 are present, it is described that a tubular passage 13 communicating with the openings 5 is provided independently.
  • Patent Document 2 Japanese Patent Application Publication No. 2012-532709 is a microneedle comprising a sharp tip, an elongated body, and a head including at least two parallel independent lumens, each of the lumens being a head Leading to a side opening at the distal end of the part, said opening essentially being in a direction perpendicular to its main direction of its lumen, the upper end of said lumen being the head of the microneedle Disclosed is an internal multi-channel microneedle.
  • thermoplastic resin having sufficient hardness to penetrate the skin when the microneedle abuts on the skin such as polycarbonate, polyester, polymethyl acrylate, or other material
  • the microneedles may be formed of a thermosetting material such as epoxy, polyurethane, or silicon, and the microneedles may be formed of a thermoplastic resin or an oxide film.
  • other non-conductive materials such as inorganic polymers or inorganic materials, and may be formed of a metal material coated on the outside and the inside with a non-conductive material such as maltose (malt sugar). It is disclosed that it may be formed from a conductive solid material.
  • Another object of the present invention is to provide an injection needle in which the insertability from the skin of the injection needle to the inside of the skin is improved.
  • the present invention is an injection needle attached to the tip of a syringe, comprising: a cylindrical portion positioned on the side of attachment to the syringe; and a tip portion extending from the cylindrical portion and having a diameter gradually decreasing toward the tip.
  • a resin injection needle having a through hole penetrating the inside from the cylindrical portion to the tip portion and an opening communicating with the through hole and opening on the side surface of the tip portion, the inner circumferential surface of the cylindrical portion A plurality of reinforcing ridges extending in the axial direction, and a plurality of circumferentially distributed injection needles along the axial direction of the outer peripheral surface of the injection needle from the cylindrical portion to the tip end portion
  • the V groove is to be formed.
  • the elastic human tissue slightly enters the V-groove, so the V-grooves
  • the guide serves as a guide to ensure that the insertion of the injection needle from the skin into the skin can be performed reliably and easily.
  • the V groove is preferably formed at a position not overlapping corresponding to the position of the reinforcing rib, but may be formed at the same position corresponding to the position of the reinforcing rib. .
  • the reinforcing ridge is formed inside the injection needle and the V groove is formed outside the injection needle, the effect of reinforcement of the injection needle and the effect of reinforcing the injection needle and the skin inside the skin of the injection needle It is possible to improve the guiding effect at the time of insertion.
  • the injection needle 1 is attached to the tip of a syringe used for injection of a drug solution or suction of blood etc.
  • a cylindrical portion 2 located at the end of the cylindrical portion 2, a distal end portion 3 extending from the cylindrical portion 2 and gradually reducing in diameter toward the distal end, a through hole 4 penetrating the inside from the cylindrical portion And an opening 5 communicating with the hole 4 and opening on the side surface of the tip.
  • the inner peripheral surface 30 of the cylindrical portion 3 protrudes from the inner peripheral surface 30 toward the central direction of the cylindrical portion 3 and extends along the axial direction of the cylindrical portion 3.
  • Reinforcing ridges 5 are formed to improve the strength of the injection needle 1 in the axial direction.
  • four reinforcing ridges 7 are formed in this embodiment, two may be provided at opposing positions, three at every 120 degrees, and six at every 60 degrees.
  • the opening 4 is in the form of a bowl formed on the side surface of the tip 3 in this embodiment, it may be circular or elliptical, and the type of medicine to be injected into the body, It is set according to the characteristics (viscosity etc.), and further, according to the drug injection position, or according to the characteristics of the collected blood or body fluid.
  • the injection needle 1 of the present invention has a plurality of V-grooves 7 along the axial direction of the injection needle 1 on the outer peripheral side 31 of the injection needle 1, the so-called cylindrical portion 2 and the outer peripheral side 31 of the tip 3. is there.
  • V groove 7 is formed in correspondence with the radial position of the reinforcing rib 6 formed inside the cylindrical portion 2, the position not overlapping with the reinforcing rib 6, that is, between the so-called reinforcing ribs 6.
  • V groove 7 is formed.
  • four V-grooves 7 are formed corresponding to the reinforcing ridges 7, but two in the opposite position and three each at 120 degrees corresponding to the number of the reinforcing ridges 7. , Six may be provided every 60 degrees.
  • the injection needle 1 having the above-described structure is formed of a resin, in particular, a silicon resin, by a mold formed by an ultra-fine processing technique and an advanced injection molding technique. Furthermore, the injection needle 1 can also be color-coded by size.
  • the injection needle 1 according to the second embodiment of the present invention is the same as the injection needle 1 according to the first embodiment in the basic structure, but the V groove 7 corresponds to the reinforcing ridge 7 in the radial direction. It is characterized in that it is formed at the same position. Also in the second embodiment, although four V-grooves 7 are formed corresponding to the positions of the reinforcing ridges 7 in the radial direction, two V-grooves 7 are provided at opposite positions corresponding to the number of the reinforcing ridges 7, Furthermore, three per 120 degrees and six per 60 degrees may be provided.
  • Example 1 when the injection needle 1 is inserted into the human body, the elastic human tissue slightly enters the V groove 7 so that the V groove 7 serves as a guide and the injection needle 1 The insertion operation from the skin to the inside of the skin can be performed reliably and easily.

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

[Problème] Le but de la présente invention est de fournir une aiguille d'injection permettant d'améliorer encore l'aptitude à l'insertion de la peau à une partie intradermique. [Solution] A cet effet, la présente invention porte sur une aiguille d'injection (1) qui est fixée à l'extrémité distale d'une seringue (1). L'aiguille d'injection (1) est constituée d'une résine et comporte : une partie cylindrique (2) située sur un côté de fixation de seringue (1); une partie d'extrémité distale (3) faisant saillie à partir de la partie cylindrique (2) et ayant un diamètre qui diminue vers l'extrémité distale; un trou traversant (4) s'étendant à travers l'intérieur depuis la partie cylindrique (2) vers la partie d'extrémité distale (3); et une ouverture (5) qui communique avec le trou traversant (4) et s'ouvre au niveau de la surface latérale de la partie d'extrémité distale. L'aiguille d'injection (1) a une pluralité de crêtes de saillie de renfort (6) s'étendant dans la direction axiale de la surface circonférentielle interne de la partie cylindrique (2), et a une pluralité de rainures en forme de V (7) formées à partir de la partie cylindrique (2) vers la partie d'extrémité distale (3) le long de la direction axiale de la surface circonférentielle externe (31) de l'aiguille d'injection (1), les rainures en forme de V (7) étant espacées de manière égale les unes des autres sur la circonférence de l'aiguille d'injection (1).
PCT/JP2017/041226 2017-11-16 2017-11-16 Aiguille d'injection WO2019097621A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/041226 WO2019097621A1 (fr) 2017-11-16 2017-11-16 Aiguille d'injection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/041226 WO2019097621A1 (fr) 2017-11-16 2017-11-16 Aiguille d'injection

Publications (1)

Publication Number Publication Date
WO2019097621A1 true WO2019097621A1 (fr) 2019-05-23

Family

ID=66538813

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/041226 WO2019097621A1 (fr) 2017-11-16 2017-11-16 Aiguille d'injection

Country Status (1)

Country Link
WO (1) WO2019097621A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008522767A (ja) * 2004-12-13 2008-07-03 スミス・メディカル・エイエスディ・インコーポレーテッド 体液腔への挿入の検出システム及びその方法
JP2016036476A (ja) * 2014-08-07 2016-03-22 典雄 宮城 注射針
WO2016153003A1 (fr) * 2015-03-26 2016-09-29 テルモ株式会社 Aiguille creuse en résine médicale, cylindre externe pourvu d'une partie de ponction, et seringue pré-remplie

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008522767A (ja) * 2004-12-13 2008-07-03 スミス・メディカル・エイエスディ・インコーポレーテッド 体液腔への挿入の検出システム及びその方法
JP2016036476A (ja) * 2014-08-07 2016-03-22 典雄 宮城 注射針
WO2016153003A1 (fr) * 2015-03-26 2016-09-29 テルモ株式会社 Aiguille creuse en résine médicale, cylindre externe pourvu d'une partie de ponction, et seringue pré-remplie

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