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WO2021149819A1 - Transfer needle - Google Patents

Transfer needle Download PDF

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Publication number
WO2021149819A1
WO2021149819A1 PCT/JP2021/002321 JP2021002321W WO2021149819A1 WO 2021149819 A1 WO2021149819 A1 WO 2021149819A1 JP 2021002321 W JP2021002321 W JP 2021002321W WO 2021149819 A1 WO2021149819 A1 WO 2021149819A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid
drug
hollow needle
peripheral surface
connecting portion
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2021/002321
Other languages
French (fr)
Japanese (ja)
Inventor
剛史 矢野
久保　朋彦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nipro Corp
Original Assignee
Nipro Corp
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
Priority claimed from JP2020141299A external-priority patent/JP7528631B2/en
Application filed by Nipro Corp filed Critical Nipro Corp
Publication of WO2021149819A1 publication Critical patent/WO2021149819A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
    • A61J1/14—Details; Accessories therefor
    • A61J1/20—Arrangements for transferring or mixing fluids, e.g. from vial to syringe

Definitions

  • the present invention relates to a transfer needle.
  • a transfer needle used when preparing a drug solution and a drug is known.
  • Japanese Patent Application Laid-Open No. 2005-34457 discloses a transfer needle including a liquid member and a drug member.
  • the liquid member can be attached to a liquid storage vial containing a liquid such as a chemical solution.
  • the liquid member surrounds the hollow needle for liquid that can be punctured in the rubber stopper of the liquid storage vial, the joint having a flow path communicating with the hollow needle for liquid, and the joint and fits into the chemical member. It has a mating portion and a mating portion.
  • the hollow needle for liquid is arranged in the vertical direction.
  • the joint is formed in a cylindrical shape. The outer peripheral surface of the joint is tapered downward. A female screw portion is formed in the fitting portion.
  • the drug member can be attached to the drug containing vial containing the drug.
  • the drug member is configured to be removable from the liquid member.
  • the drug member has a base and a hollow needle for a drug solution that is connected to the base and can be punctured into the rubber stopper of the drug storage vial.
  • On the outer peripheral surface of the base a male screw portion that is screwed with the female screw portion of the liquid member is formed.
  • a female lure that opens in the vertical direction is formed in the center of the base.
  • the female lure is a tapered hole formed in a downward taper shape.
  • An object of the present invention is to provide a transfer needle capable of reducing the torque required for separating the liquid member and the drug member from each other.
  • the transfer needle according to one aspect of the present invention can be connected to a liquid member that can be attached to a liquid storage container that stores a liquid and a drug storage container that stores a drug, and can be attached to and detached from the liquid member.
  • the liquid member includes a possible drug member, and the liquid member includes a liquid hollow needle capable of piercing the liquid storage container, a liquid side support portion for supporting the liquid hollow needle, and the liquid side. It is connected to a portion of the support portion opposite to the side to which the hollow needle for liquid is connected, and is formed around the liquid side connection portion connected to the drug member and the liquid side connection portion.
  • the drug member has a liquid-side threaded portion that is screwed into the drug member, and the drug member includes a drug hollow needle that can be pierced into the drug storage container and the drug hollow needle.
  • a drug-side support portion that supports the drug and a drug-side screw portion that is provided on the side opposite to the side where the drug hollow needle is located with reference to the drug-side support portion and is screwed into the liquid-side screw portion.
  • a drug-side connection portion provided inside the drug-side screw portion and connected to the liquid-side connection portion in a screwed state in which the liquid-side screw portion and the drug-side screw portion are screwed together.
  • the liquid side connection portion has a liquid side flow path communicating with the flow path in the liquid hollow needle, and the drug side connection portion has the liquid side flow path and the liquid side flow path in the screwed state. It has a drug-side flow path that communicates with the flow path in the drug-use hollow needle, and one connection of the liquid-side connection and the drug-side connection is the liquid-side connection and the liquid-side connection in the screwed state.
  • the outer peripheral surface of the one connecting portion which is inserted into the other connecting portion of the drug-side connecting portion, has a contact region that contacts the inner peripheral surface of the other connecting portion in the screwed state and the above-mentioned in the screwed state.
  • the other connecting portion has a non-contact region separated from the inner peripheral surface.
  • FIG. 2 is a cross-sectional view taken along the line II-II shown in FIG. It is an enlarged view of the liquid member shown in FIG. It is an enlarged view of the pharmaceutical member shown in FIG. It is an enlarged view of the range shown by the solid line V in FIG. It is sectional drawing which shows typically the modification of the drug side connection part. It is a perspective view which shows the modification of the drug side connection part schematicly.
  • FIG. 5 is a cross-sectional view schematically showing a drug-side connection portion shown in FIG. 7.
  • FIG. 1 is a perspective view of a transfer needle according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view taken along the line II-II shown in FIG.
  • the transfer needle 1 includes a liquid member 100, a drug member 200, and a filter 300.
  • the liquid member 100 can be attached to a liquid storage container (not shown) that stores the liquid. Vials can be mentioned as liquid storage containers.
  • the liquid member 100 is made of, for example, a resin.
  • the liquid member 100 includes a liquid hollow needle 110, a liquid side support portion 120, a liquid side connection portion 130, a surrounding cylinder 140, a liquid side screw portion 150, a liquid side fitting portion 160, and a peripheral wall 170. ,have.
  • the liquid hollow needle 110 can be punctured into a liquid storage container (rubber stopper of a vial).
  • the liquid side support portion 120 is a portion that supports the liquid hollow needle 110.
  • the liquid side support portion 120 is formed in a disk shape.
  • the liquid side support portion 120 supports the liquid hollow needle 110 in a posture in which the liquid hollow needle 110 is perpendicular to the liquid side support portion 120.
  • the liquid side connection portion 130 is connected to a portion of the liquid side support portion 120 on the side opposite to the side to which the liquid hollow needle 110 is connected (lower side in FIG. 2). As shown in FIGS. 2 and 3, the liquid side connecting portion 130 has a liquid side flow path 135 communicating with the flow path 115 in the liquid hollow needle 110.
  • the liquid side connection portion 130 is formed in a cylindrical shape.
  • the liquid side connection portion 130 is connected to the liquid side support portion 120 in a posture in which the axial direction of the liquid side connection portion 130 is perpendicular to the liquid side support portion 120.
  • the outer diameter D1 of the liquid side connecting portion 130 is constant in the axial direction (vertical direction in FIGS. 2 and 3) of the liquid side connecting portion 130.
  • the surrounding cylinder 140 is provided around the liquid side connecting portion 130, and is formed in a tubular shape surrounding the liquid side connecting portion 130. Specifically, the siege cylinder 140 is formed in a cylindrical shape. The siege cylinder 140 is connected to the liquid side support portion 120.
  • the liquid side screw portion 150 is formed on the inner peripheral surface 140S (see FIG. 3) of the surrounding cylinder 140.
  • the liquid side screw portion 150 can be screwed with the chemical member 200.
  • the liquid side threaded portion 150 is a female threaded portion.
  • the liquid side fitting portion 160 is a portion that fits into the mouth portion of the liquid storage container.
  • the liquid side fitting portion 160 is the axial direction of the liquid hollow needle 110 from the edge of the surface of the liquid side support portion 120 to which the liquid hollow needle 110 is connected (upper side in FIGS. 2 and 3). It has a shape that protrudes in the parallel direction.
  • the liquid side fitting portion 160 is formed in a cylindrical shape. When the liquid side fitting portion 160 is fitted to the mouth portion of the liquid storage container, the liquid hollow needle 110 is punctured into the liquid storage container (rubber stopper portion of the vial).
  • the peripheral wall 170 is in a direction parallel to the axial direction of the liquid side connecting portion 130 from the edge of the surface of the liquid side supporting portion 120 to which the liquid side connecting portion 130 is connected (lower side in FIGS. 2 and 3). It has a protruding shape.
  • the peripheral wall 170 is formed in a cylindrical shape. The outer peripheral surface of the peripheral wall 170 is continuously connected to the outer peripheral surface of the liquid side fitting portion 160.
  • the drug member 200 can be connected to a drug storage container (not shown) that stores the drug. Vials can be mentioned as drug storage containers.
  • the drug member 200 is removable from the liquid member 100.
  • the pharmaceutical member 200 is made of, for example, a resin.
  • the drug member 200 has a drug hollow needle 210, a drug side support portion 220, a drug side connection portion 230, a drug side screw portion 250, and a drug side fitting portion 260.
  • the drug hollow needle 210 can be punctured into the drug storage container (rubber stopper of the vial).
  • the drug side support portion 220 is a portion that supports the drug hollow needle 210.
  • the drug-side support portion 220 is formed in a disk shape.
  • the drug side support portion 220 supports the drug hollow needle 210 in a posture in which the drug hollow needle 210 is perpendicular to the drug side support portion 220.
  • the flat plate portion 222 is connected to the surface of the drug side support portion 220 to which the hollow needle 210 for drug is connected (lower side in FIGS. 2 and 4).
  • a communication portion 225 is connected to the drug side support portion 220 and the flat plate portion 222.
  • the communication portion 225 has a communication passage 224 that communicates with the air passage 214 formed in the hollow needle 210 for chemicals.
  • the filter 300 is arranged in the communication portion 225.
  • the drug side connection portion 230 is a portion connected to the liquid side connection portion 130.
  • the drug-side connecting portion 230 is connected to a portion of the drug-side supporting portion 220 on the side opposite to the side to which the drug hollow needle 210 is connected (upper side in FIG. 2).
  • the drug-side connection portion 230 has a drug-side flow path 235 that communicates with the flow path 215 in the drug hollow needle 210.
  • the filter 300 is arranged in the drug side flow path 235.
  • the drug-side connecting portion 230 is connected to the drug-side supporting portion 220 in a posture in which the axial direction of the drug-side connecting portion 230 is perpendicular to the drug-side supporting portion 220.
  • the drug side connection portion 230 is formed in a cylindrical shape. As shown in FIG. 5, the inner peripheral surface 230S of the drug-side connecting portion 230 is formed in a tapered shape in which the diameter gradually increases as the distance from the drug-side supporting portion 220 increases.
  • the diameter D2 of the base end portion of the inner peripheral surface 230S is smaller than the outer diameter D1 (see FIG. 3) of the liquid side connecting portion 130.
  • the diameter D3 of the open end portion of the inner peripheral surface 230S is larger than the outer diameter D1 of the liquid side connecting portion 130.
  • the taper ratio of the inner peripheral surface 230S (the ratio of the difference between the diameter D3 of the opening end portion of the inner peripheral surface 230S and the diameter D2 of the base end portion to the height of the inner peripheral surface 230S) is 6 /. It is set to 100. However, the taper ratio of the inner peripheral surface 230S is not limited to this.
  • the drug side screw portion 250 is screwed into the liquid side screw portion 150.
  • the drug-side screw portion 250 is formed on the outer peripheral surface of the drug-side connection portion 230.
  • the drug-side threaded portion 250 is a male threaded portion.
  • the liquid-side connection portion 130 is connected to the drug-side connection portion 230.
  • the drug-side screw portion 250 is configured to be screwable to the injection needle connection portion of the syringe.
  • the diameter D2 of the base end portion of the inner peripheral surface 230S of the drug side connecting portion 230 is smaller than the outer diameter D1 of the liquid side connecting portion 130, and the diameter D3 of the opening end portion of the inner peripheral surface 230S is Since it is larger than the outer diameter D1 of the liquid side connection portion 130, the tip end portion of the liquid side connection portion 130 is press-fitted into the drug side connection portion 230 in the screwed state.
  • the outer peripheral surface 130S of the tip of the liquid side connecting portion 130 constitutes a contact region 130S1 in contact with the inner peripheral surface 230S of the drug side connecting portion 230.
  • the outer peripheral surface of the liquid side connecting portion 130 other than the tip portion constitutes a non-contact region 130S2 separated from the inner peripheral surface 230S of the drug side connecting portion 230.
  • the drug-side fitting portion 260 is a portion that fits into the mouth of the drug storage container.
  • the drug-side fitting portion 260 is the axial direction of the drug-side hollow needle 210 from the edge of the surface of the drug-side support portion 220 to which the drug-use hollow needle 210 is connected (lower side in FIGS. 2 and 3). It has a shape that protrudes in the direction parallel to.
  • the drug-side fitting portion 260 is formed in a cylindrical shape. When the drug-side fitting portion 260 is fitted to the mouth portion of the drug storage container, the drug hollow needle 210 is punctured into the drug storage container (rubber stopper portion of the vial).
  • the liquid member 100 is removed from the drug member 200. Specifically, by rotating the liquid member 100 with respect to the drug member 200, the screwing between the liquid side connection portion 130 and the drug side connection portion 230 is released.
  • the transfer needle 1 of the present embodiment since the outer peripheral surface 130S of the liquid side connecting portion 130 has a non-contact region 130S2 separated from the inner peripheral surface 230S of the drug side connecting portion 230 in the screwed state, it is used for liquids.
  • the torque required to separate the member 100 from the drug member 200 is reduced as compared with the case where the entire outer peripheral surface 130S of the liquid side connection portion 130 is in contact with the inner peripheral surface 230S of the drug side connection portion 230. NS. Therefore, the work of separating the liquid member 100 from the drug member 200 becomes easy.
  • the injection needle connection portion of the syringe is screwed into the drug side screw portion 250.
  • the liquid side connecting portion 130 may have a cylindrical portion 131 formed in a cylindrical shape and an annular rib 132 connected to the outer peripheral surface of the cylindrical portion 131. ..
  • the annular rib 132 has a shape connected in an annular shape along the radial direction of the cylindrical portion 131.
  • the annular ribs 132 may be provided at intervals along the axial direction of the cylindrical portion 131.
  • the outer end of the annular rib 132 in the radial direction of the cylindrical portion 131 constitutes the contact region 130S1, and the outer peripheral surface of the cylindrical portion 131 constitutes the non-contact region 130S2.
  • the torque required to separate the liquid member 100 from the drug member 200 is reduced.
  • the liquid side connecting portion 130 may have a cylindrical portion 131 and a vertical rib 133 connected to the outer peripheral surface of the cylindrical portion 131.
  • the vertical rib 133 has a shape extending along the axial direction of the cylindrical portion 131 or a direction intersecting the axial direction thereof.
  • the vertical ribs 133 may be provided at intervals along the circumferential direction of the cylindrical portion 131.
  • the outer end of the vertical rib 133 in the radial direction of the cylindrical portion 131 constitutes the contact region 130S1
  • the outer peripheral surface of the cylindrical portion 131 constitutes the non-contact region 130S2. Also in this aspect, the torque required to separate the liquid member 100 from the drug member 200 is reduced.
  • the transfer needle according to one aspect of the present invention can be connected to a liquid member that can be attached to a liquid storage container that stores a liquid and a drug storage container that stores a drug, and can be attached to and detached from the liquid member.
  • the liquid member includes a possible drug member, and the liquid member includes a liquid hollow needle capable of piercing the liquid storage container, a liquid side support portion for supporting the liquid hollow needle, and the liquid side. It is connected to a portion of the support portion opposite to the side to which the hollow needle for liquid is connected, and is formed around the liquid side connection portion connected to the drug member and the liquid side connection portion.
  • the drug member has a liquid-side threaded portion that is screwed into the drug member, and the drug member includes a drug hollow needle that can be pierced into the drug storage container and the drug hollow needle.
  • a drug-side support portion that supports the drug and a drug-side screw portion that is provided on the side opposite to the side where the drug hollow needle is located with reference to the drug-side support portion and is screwed into the liquid-side screw portion.
  • a drug-side connection portion provided inside the drug-side screw portion and connected to the liquid-side connection portion in a screwed state in which the liquid-side screw portion and the drug-side screw portion are screwed together.
  • the liquid side connection portion has a liquid side flow path communicating with the flow path in the liquid hollow needle, and the drug side connection portion has the liquid side flow path and the liquid side flow path in the screwed state. It has a drug-side flow path that communicates with the flow path in the drug-use hollow needle, and one connection of the liquid-side connection and the drug-side connection is the liquid-side connection and the liquid-side connection in the screwed state.
  • the outer peripheral surface of the one connecting portion which is inserted into the other connecting portion of the drug-side connecting portion, has a contact region that contacts the inner peripheral surface of the other connecting portion in the screwed state and the above-mentioned in the screwed state.
  • the other connecting portion has a non-contact region separated from the inner peripheral surface.
  • the diameter of the outer peripheral surface of the one connecting portion is constant in the axial direction of the one connecting portion, and the inner peripheral surface of the other connecting portion is separated from the drug side supporting portion. It is preferably formed in a tapered shape that gradually expands in diameter, the tip end portion of the one connecting portion constitutes the contact region, and the base end portion of the one connecting portion constitutes the non-contact region. ..
  • connection portion is the liquid side connection portion
  • other connection portion is the drug side connection portion
  • drug side screw portion can be screwed into the injection needle connection portion of the syringe. It is preferably configured.

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  • Health & Medical Sciences (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)

Abstract

A transfer needle (1) comprises: a for-liquid member (100) and a for-medication member (200). The for-liquid member (100) comprises: a for-liquid hollow needle (110); a liquid-side support unit (120); a liquid-side connecting unit (130); and a liquid-side screw (150). The for-medication member (200) comprises: a for-medication hollow needle (210); a medication-side support unit (220); a medication-side screw (250); and a medication-side connecting unit (230). Either one of the liquid-side connecting unit (130) and the medication-side connecting unit (230) is inserted into the connecting unit of the other one of the liquid-side connecting unit (130) and the medication-side connecting unit (230) in a state of being screwed together. The outer peripheral surface of one of the connecting units has: a contact region that is in contact with the inner peripheral surface of the other connecting unit in a state of being screwed together; and a non-contact region that is separated from the inner peripheral surface of the other connecting unit in a state of being screwed together.

Description

トランスファーニードルTransfer needle

　この発明は、トランスファーニードルに関する。 The present invention relates to a transfer needle.

　従来、薬液と薬剤とを調製する際に用いられるトランスファーニードルが知られている。例えば、特開２００５－３４４５７号公報には、液体用部材と、薬剤用部材と、を備えるトランスファーニードルが開示されている。 Conventionally, a transfer needle used when preparing a drug solution and a drug is known. For example, Japanese Patent Application Laid-Open No. 2005-34457 discloses a transfer needle including a liquid member and a drug member.

　液体用部材は、薬液等の液体が収容された液体収容バイアルに装着可能である。液体用部材は、液体収容バイアルのゴム栓部に穿刺可能な液体用中空針と、液体用中空針内と連通する流路を有する接合部と、接合部を包囲しており薬剤用部材に嵌合する嵌合部と、を有している。液体用中空針は、上下方向に配設されている。接合部は、円筒状に形成されている。接合部の外周面は、下方に向かってテーパー状とされている。嵌合部には、雌螺子部が形成されている。 The liquid member can be attached to a liquid storage vial containing a liquid such as a chemical solution. The liquid member surrounds the hollow needle for liquid that can be punctured in the rubber stopper of the liquid storage vial, the joint having a flow path communicating with the hollow needle for liquid, and the joint and fits into the chemical member. It has a mating portion and a mating portion. The hollow needle for liquid is arranged in the vertical direction. The joint is formed in a cylindrical shape. The outer peripheral surface of the joint is tapered downward. A female screw portion is formed in the fitting portion.

　薬剤用部材は、薬剤が収容された薬剤収容バイアルに装着可能である。薬剤用部材は、液体用部材に対して着脱可能に構成されている。薬剤用部材は、基台と、基台に接続されており薬剤収容バイアルのゴム栓部に穿刺可能な薬液用中空針と、を有している。基台の外周面には、液体用部材の雌螺子部と螺合する雄螺子部が形成されている。基台の中心部には、上下方向に開口する雌ルアーが形成されている。雌ルアーは、下方に向かってテーパー状に形成されたテーパー孔とされている。雄螺子部が雌螺子部に螺合することにより、接合部が雌ルアー内に挿入される。このとき、接合部と雌ルアーは液密状態でテーパー結合されている。薬液用中空針は、基台の中心部の下端部から下向きに配設されている。薬液用中空針内は、雌ルアー内と連通している。 The drug member can be attached to the drug containing vial containing the drug. The drug member is configured to be removable from the liquid member. The drug member has a base and a hollow needle for a drug solution that is connected to the base and can be punctured into the rubber stopper of the drug storage vial. On the outer peripheral surface of the base, a male screw portion that is screwed with the female screw portion of the liquid member is formed. A female lure that opens in the vertical direction is formed in the center of the base. The female lure is a tapered hole formed in a downward taper shape. By screwing the male screw portion into the female screw portion, the joint portion is inserted into the female lure. At this time, the joint and the female lure are tapered in a liquidtight state. The hollow needle for chemicals is arranged downward from the lower end of the central portion of the base. The inside of the hollow needle for chemicals communicates with the inside of the female lure.

特開２００５－３４４５７号公報Japanese Unexamined Patent Publication No. 2005-34457

　特開２００５－３４４５７号公報に記載されるトランスファーニードルでは、接合部の外周面と雌ルアーの内周面とが全域にわたって面接触しているため、液体用部材を薬剤用部材から分離させるときに必要なトルクが大きくなる。 In the transfer needle described in JP-A-2005-34457, the outer peripheral surface of the joint and the inner peripheral surface of the female lure are in surface contact over the entire area, so that when the liquid member is separated from the drug member, The required torque increases.

　本発明の目的は、液体用部材と薬剤用部材とを互いに分離させる際に必要なトルクを低減することが可能なトランスファーニードルを提供することである。 An object of the present invention is to provide a transfer needle capable of reducing the torque required for separating the liquid member and the drug member from each other.

　この発明の一局面に従ったトランスファーニードルは、液体を収容する液体収容容器に装着可能な液体用部材と、薬剤を収容する薬剤収容容器に接続可能で、かつ、前記液体用部材に対して着脱可能な薬剤用部材と、を備え、前記液体用部材は、前記液体収容容器に穿刺することが可能な液体用中空針と、前記液体用中空針を支持する液体側支持部と、前記液体側支持部のうち前記液体用中空針が接続されている側とは反対側の部位に接続されており、前記薬剤用部材に接続される液体側接続部と、前記液体側接続部の周囲に形成されており、前記薬剤用部材に螺合する液体側ネジ部と、を有し、前記薬剤用部材は、前記薬剤収容容器に穿刺することが可能な薬剤用中空針と、前記薬剤用中空針を支持する薬剤側支持部と、前記薬剤側支持部を基準として前記薬剤用中空針が位置する側とは反対側に設けられており、前記液体側ネジ部に螺合する薬剤側ネジ部と、前記薬剤側ネジ部の内側に設けられており、前記液体側ネジ部と前記薬剤側ネジ部とが互いに螺合した螺合状態において前記液体側接続部に接続される薬剤側接続部と、を有し、前記液体側接続部は、前記液体用中空針内の流路と連通する液体側流路を有し、前記薬剤側接続部は、前記螺合状態において前記液体側流路と前記薬剤用中空針内の流路とを連通させる薬剤側流路を有し、前記液体側接続部及び前記薬剤側接続部の一方の接続部は、前記螺合状態において前記液体側接続部及び前記薬剤側接続部の他方の接続部内に挿入され、前記一方の接続部の外周面は、前記螺合状態において前記他方の接続部の内周面に接触する接触領域と、前記螺合状態において前記他方の接続部の前記内周面から離間した非接触領域と、を有する。 The transfer needle according to one aspect of the present invention can be connected to a liquid member that can be attached to a liquid storage container that stores a liquid and a drug storage container that stores a drug, and can be attached to and detached from the liquid member. The liquid member includes a possible drug member, and the liquid member includes a liquid hollow needle capable of piercing the liquid storage container, a liquid side support portion for supporting the liquid hollow needle, and the liquid side. It is connected to a portion of the support portion opposite to the side to which the hollow needle for liquid is connected, and is formed around the liquid side connection portion connected to the drug member and the liquid side connection portion. The drug member has a liquid-side threaded portion that is screwed into the drug member, and the drug member includes a drug hollow needle that can be pierced into the drug storage container and the drug hollow needle. A drug-side support portion that supports the drug and a drug-side screw portion that is provided on the side opposite to the side where the drug hollow needle is located with reference to the drug-side support portion and is screwed into the liquid-side screw portion. , A drug-side connection portion provided inside the drug-side screw portion and connected to the liquid-side connection portion in a screwed state in which the liquid-side screw portion and the drug-side screw portion are screwed together. The liquid side connection portion has a liquid side flow path communicating with the flow path in the liquid hollow needle, and the drug side connection portion has the liquid side flow path and the liquid side flow path in the screwed state. It has a drug-side flow path that communicates with the flow path in the drug-use hollow needle, and one connection of the liquid-side connection and the drug-side connection is the liquid-side connection and the liquid-side connection in the screwed state. The outer peripheral surface of the one connecting portion, which is inserted into the other connecting portion of the drug-side connecting portion, has a contact region that contacts the inner peripheral surface of the other connecting portion in the screwed state and the above-mentioned in the screwed state. The other connecting portion has a non-contact region separated from the inner peripheral surface.

　以上に説明したように、この発明によれば、液体用部材と薬剤用部材とを互いに分離させる際に必要なトルクを低減することが可能なトランスファーニードルを提供することができる。 As described above, according to the present invention, it is possible to provide a transfer needle capable of reducing the torque required when separating the liquid member and the drug member from each other.

本発明の一実施形態のトランスファーニードルの斜視図である。It is a perspective view of the transfer needle of one Embodiment of this invention. 図１に示されるＩＩ－ＩＩ線での断面図である。FIG. 2 is a cross-sectional view taken along the line II-II shown in FIG. 図２に示される液体用部材の拡大図である。It is an enlarged view of the liquid member shown in FIG. 図２に示される薬剤用部材の拡大図である。It is an enlarged view of the pharmaceutical member shown in FIG. 図４において実線Ｖで示される範囲の拡大図である。It is an enlarged view of the range shown by the solid line V in FIG. 薬剤側接続部の変形例を概略的に示す断面図である。It is sectional drawing which shows typically the modification of the drug side connection part. 薬剤側接続部の変形例を概略的に示す斜視図である。It is a perspective view which shows the modification of the drug side connection part schematicly. 図７に示される薬剤側接続部を概略的に示す断面図である。FIG. 5 is a cross-sectional view schematically showing a drug-side connection portion shown in FIG. 7.

　この発明の実施の形態について、図面を参照して説明する。なお、以下で参照する図面では、同一またはそれに相当する部材には、同じ番号が付されている。 An embodiment of the present invention will be described with reference to the drawings. In the drawings referred to below, the same or corresponding members are given the same number.

　図１は、本発明の一実施形態のトランスファーニードルの斜視図である。図２は、図１に示されるＩＩ－ＩＩ線での断面図である。 FIG. 1 is a perspective view of a transfer needle according to an embodiment of the present invention. FIG. 2 is a cross-sectional view taken along the line II-II shown in FIG.

　図１及び図２に示されるように、トランスファーニードル１は、液体用部材１００と、薬剤用部材２００と、フィルター３００と、を備えている。 As shown in FIGS. 1 and 2, the transfer needle 1 includes a liquid member 100, a drug member 200, and a filter 300.

　液体用部材１００は、液体を収容する液体収容容器（図示略）に装着可能である。液体収容容器として、バイアルが挙げられる。液体用部材１００は、例えば樹脂で形成されている。液体用部材１００は、液体用中空針１１０と、液体側支持部１２０と、液体側接続部１３０と、包囲筒１４０と、液体側ネジ部１５０と、液体側嵌合部１６０と、周壁１７０と、を有している。 The liquid member 100 can be attached to a liquid storage container (not shown) that stores the liquid. Vials can be mentioned as liquid storage containers. The liquid member 100 is made of, for example, a resin. The liquid member 100 includes a liquid hollow needle 110, a liquid side support portion 120, a liquid side connection portion 130, a surrounding cylinder 140, a liquid side screw portion 150, a liquid side fitting portion 160, and a peripheral wall 170. ,have.

　液体用中空針１１０は、液体収容容器（バイアルのゴム栓部）に穿刺することが可能である。 The liquid hollow needle 110 can be punctured into a liquid storage container (rubber stopper of a vial).

　液体側支持部１２０は、液体用中空針１１０を支持する部位である。液体側支持部１２０は、円板状に形成されている。液体側支持部１２０は、当該液体側支持部１２０に対して液体用中空針１１０が垂直となる姿勢で液体用中空針１１０を支持している。 The liquid side support portion 120 is a portion that supports the liquid hollow needle 110. The liquid side support portion 120 is formed in a disk shape. The liquid side support portion 120 supports the liquid hollow needle 110 in a posture in which the liquid hollow needle 110 is perpendicular to the liquid side support portion 120.

　液体側接続部１３０は、液体側支持部１２０のうち液体用中空針１１０が接続されている側とは反対側（図２における下側）の部位に接続されている。図２及び図３に示されるように、液体側接続部１３０は、液体用中空針１１０内の流路１１５と連通する液体側流路１３５を有している。液体側接続部１３０は、円筒状に形成されている。液体側接続部１３０は、当該液体側接続部１３０の軸方向が液体側支持部１２０と垂直となる姿勢で液体側支持部１２０に接続されている。図３に示されるように、液体側接続部１３０の外径Ｄ１は、当該液体側接続部１３０の軸方向（図２及び図３における上下方向）に一定である。 The liquid side connection portion 130 is connected to a portion of the liquid side support portion 120 on the side opposite to the side to which the liquid hollow needle 110 is connected (lower side in FIG. 2). As shown in FIGS. 2 and 3, the liquid side connecting portion 130 has a liquid side flow path 135 communicating with the flow path 115 in the liquid hollow needle 110. The liquid side connection portion 130 is formed in a cylindrical shape. The liquid side connection portion 130 is connected to the liquid side support portion 120 in a posture in which the axial direction of the liquid side connection portion 130 is perpendicular to the liquid side support portion 120. As shown in FIG. 3, the outer diameter D1 of the liquid side connecting portion 130 is constant in the axial direction (vertical direction in FIGS. 2 and 3) of the liquid side connecting portion 130.

　包囲筒１４０は、液体側接続部１３０の周囲に設けられており、液体側接続部１３０を包囲する筒状に形成されている。具体的に、包囲筒１４０は、円筒状に形成されている。包囲筒１４０は、液体側支持部１２０に接続されている。 The surrounding cylinder 140 is provided around the liquid side connecting portion 130, and is formed in a tubular shape surrounding the liquid side connecting portion 130. Specifically, the siege cylinder 140 is formed in a cylindrical shape. The siege cylinder 140 is connected to the liquid side support portion 120.

　液体側ネジ部１５０は、包囲筒１４０の内周面１４０Ｓ（図３を参照）に形成されている。液体側ネジ部１５０は、薬剤用部材２００と螺合可能である。液体側ネジ部１５０は、雌ネジ部である。 The liquid side screw portion 150 is formed on the inner peripheral surface 140S (see FIG. 3) of the surrounding cylinder 140. The liquid side screw portion 150 can be screwed with the chemical member 200. The liquid side threaded portion 150 is a female threaded portion.

　液体側嵌合部１６０は、液体収容容器の口部に嵌合する部位である。液体側嵌合部１６０は、液体側支持部１２０のうち液体用中空針１１０が接続されている側（図２及び図３における上側）の面の縁部から液体用中空針１１０の軸方向と平行な方向に突出する形状を有している。液体側嵌合部１６０は、円筒状に形成されている。この液体側嵌合部１６０が液体収容容器の口部に嵌合することにより、液体用中空針１１０は、液体収容容器（バイアルのゴム栓部）に穿刺される。 The liquid side fitting portion 160 is a portion that fits into the mouth portion of the liquid storage container. The liquid side fitting portion 160 is the axial direction of the liquid hollow needle 110 from the edge of the surface of the liquid side support portion 120 to which the liquid hollow needle 110 is connected (upper side in FIGS. 2 and 3). It has a shape that protrudes in the parallel direction. The liquid side fitting portion 160 is formed in a cylindrical shape. When the liquid side fitting portion 160 is fitted to the mouth portion of the liquid storage container, the liquid hollow needle 110 is punctured into the liquid storage container (rubber stopper portion of the vial).

　周壁１７０は、液体側支持部１２０のうち液体側接続部１３０が接続されている側（図２及び図３における下側）の面の縁部から液体側接続部１３０の軸方向と平行な方向に突出する形状を有している。周壁１７０は、円筒状に形成されている。周壁１７０の外周面は、液体側嵌合部１６０の外周面と連続的につながっている。 The peripheral wall 170 is in a direction parallel to the axial direction of the liquid side connecting portion 130 from the edge of the surface of the liquid side supporting portion 120 to which the liquid side connecting portion 130 is connected (lower side in FIGS. 2 and 3). It has a protruding shape. The peripheral wall 170 is formed in a cylindrical shape. The outer peripheral surface of the peripheral wall 170 is continuously connected to the outer peripheral surface of the liquid side fitting portion 160.

　薬剤用部材２００は、薬剤を収容する薬剤収容容器（図示略）に接続可能である。薬剤収容容器として、バイアルが挙げられる。薬剤用部材２００は、液体用部材１００に対して着脱可能である。薬剤用部材２００は、例えば樹脂で形成されている。薬剤用部材２００は、薬剤用中空針２１０と、薬剤側支持部２２０と、薬剤側接続部２３０と、薬剤側ネジ部２５０と、薬剤側嵌合部２６０と、を有している。 The drug member 200 can be connected to a drug storage container (not shown) that stores the drug. Vials can be mentioned as drug storage containers. The drug member 200 is removable from the liquid member 100. The pharmaceutical member 200 is made of, for example, a resin. The drug member 200 has a drug hollow needle 210, a drug side support portion 220, a drug side connection portion 230, a drug side screw portion 250, and a drug side fitting portion 260.

　薬剤用中空針２１０は、薬剤収容容器（バイアルのゴム栓部）に穿刺することが可能である。 The drug hollow needle 210 can be punctured into the drug storage container (rubber stopper of the vial).

　薬剤側支持部２２０は、薬剤用中空針２１０を支持する部位である。薬剤側支持部２２０は、円板状に形成されている。薬剤側支持部２２０は、当該薬剤側支持部２２０に対して薬剤用中空針２１０が垂直となる姿勢で薬剤用中空針２１０を支持している。なお、薬剤側支持部２２０のうち薬剤用中空針２１０が接続された側（図２及び図４における下側）の面には、平板部２２２が接続されている。 The drug side support portion 220 is a portion that supports the drug hollow needle 210. The drug-side support portion 220 is formed in a disk shape. The drug side support portion 220 supports the drug hollow needle 210 in a posture in which the drug hollow needle 210 is perpendicular to the drug side support portion 220. The flat plate portion 222 is connected to the surface of the drug side support portion 220 to which the hollow needle 210 for drug is connected (lower side in FIGS. 2 and 4).

　図２及び図４に示されるように、薬剤側支持部２２０及び平板部２２２には、連通部２２５が接続されている。連通部２２５は、薬剤用中空針２１０に形成された空気路２１４と連通する連通路２２４を有している。図２に示されるように、連通部２２５内に、フィルター３００が配置されている。 As shown in FIGS. 2 and 4, a communication portion 225 is connected to the drug side support portion 220 and the flat plate portion 222. The communication portion 225 has a communication passage 224 that communicates with the air passage 214 formed in the hollow needle 210 for chemicals. As shown in FIG. 2, the filter 300 is arranged in the communication portion 225.

　薬剤側接続部２３０は、液体側接続部１３０に接続される部位である。薬剤側接続部２３０は、薬剤側支持部２２０のうち薬剤用中空針２１０が接続されている側とは反対側（図２における上側）の部位に接続されている。図２、図４及び図５に示されるように、薬剤側接続部２３０は、薬剤用中空針２１０内の流路２１５と連通する薬剤側流路２３５を有している。図２に示されるように、薬剤側流路２３５内に、フィルター３００が配置されている。薬剤側接続部２３０は、当該薬剤側接続部２３０の軸方向が薬剤側支持部２２０と垂直となる姿勢で薬剤側支持部２２０に接続されている。 The drug side connection portion 230 is a portion connected to the liquid side connection portion 130. The drug-side connecting portion 230 is connected to a portion of the drug-side supporting portion 220 on the side opposite to the side to which the drug hollow needle 210 is connected (upper side in FIG. 2). As shown in FIGS. 2, 4 and 5, the drug-side connection portion 230 has a drug-side flow path 235 that communicates with the flow path 215 in the drug hollow needle 210. As shown in FIG. 2, the filter 300 is arranged in the drug side flow path 235. The drug-side connecting portion 230 is connected to the drug-side supporting portion 220 in a posture in which the axial direction of the drug-side connecting portion 230 is perpendicular to the drug-side supporting portion 220.

　薬剤側接続部２３０は、円筒状に形成されている。図５に示されるように、薬剤側接続部２３０の内周面２３０Ｓは、薬剤側支持部２２０から離間するにしたがって次第に拡径するテーパー状に形成されている。内周面２３０Ｓの基端部の径Ｄ２は、液体側接続部１３０の外径Ｄ１（図３を参照）よりも小さい。内周面２３０Ｓの開口端部の径Ｄ３は、液体側接続部１３０の外径Ｄ１よりも大きい。本実施形態では、内周面２３０Ｓのテーパー比（内周面２３０Ｓの高さに対する、内周面２３０Ｓの開口端部の径Ｄ３と基端部の径Ｄ２との差の割合）は、６／１００に設定されている。ただし、内周面２３０Ｓのテーパー比は、これに限られない。 The drug side connection portion 230 is formed in a cylindrical shape. As shown in FIG. 5, the inner peripheral surface 230S of the drug-side connecting portion 230 is formed in a tapered shape in which the diameter gradually increases as the distance from the drug-side supporting portion 220 increases. The diameter D2 of the base end portion of the inner peripheral surface 230S is smaller than the outer diameter D1 (see FIG. 3) of the liquid side connecting portion 130. The diameter D3 of the open end portion of the inner peripheral surface 230S is larger than the outer diameter D1 of the liquid side connecting portion 130. In the present embodiment, the taper ratio of the inner peripheral surface 230S (the ratio of the difference between the diameter D3 of the opening end portion of the inner peripheral surface 230S and the diameter D2 of the base end portion to the height of the inner peripheral surface 230S) is 6 /. It is set to 100. However, the taper ratio of the inner peripheral surface 230S is not limited to this.

　薬剤側ネジ部２５０は、液体側ネジ部１５０に螺合する。薬剤側ネジ部２５０は、薬剤側接続部２３０の外周面に形成されている。薬剤側ネジ部２５０は、雄ネジ部である。この薬剤側ネジ部２５０と液体側ネジ部１５０とが互いに螺合した螺合状態（図２に示される状態）において、液体側接続部１３０が薬剤側接続部２３０に接続される。薬剤側ネジ部２５０は、シリンジの注射針接続部に螺合可能に構成されている。 The drug side screw portion 250 is screwed into the liquid side screw portion 150. The drug-side screw portion 250 is formed on the outer peripheral surface of the drug-side connection portion 230. The drug-side threaded portion 250 is a male threaded portion. In a screwed state (state shown in FIG. 2) in which the drug-side screw portion 250 and the liquid-side screw portion 150 are screwed together, the liquid-side connection portion 130 is connected to the drug-side connection portion 230. The drug-side screw portion 250 is configured to be screwable to the injection needle connection portion of the syringe.

　本実施形態では、薬剤側接続部２３０の内周面２３０Ｓの基端部の径Ｄ２は、液体側接続部１３０の外径Ｄ１よりも小さく、内周面２３０Ｓの開口端部の径Ｄ３は、液体側接続部１３０の外径Ｄ１よりも大きいため、前記螺合状態において、液体側接続部１３０の先端部が薬剤側接続部２３０に圧入された状態となる。この液体側接続部１３０の先端部の外周面１３０Ｓは、薬剤側接続部２３０の内周面２３０Ｓに接触する接触領域１３０Ｓ１を構成する。液体側接続部１３０のうち前記先端部以外の部位の外周面は、薬剤側接続部２３０の内周面２３０Ｓから離間した非接触領域１３０Ｓ２を構成する。 In the present embodiment, the diameter D2 of the base end portion of the inner peripheral surface 230S of the drug side connecting portion 230 is smaller than the outer diameter D1 of the liquid side connecting portion 130, and the diameter D3 of the opening end portion of the inner peripheral surface 230S is Since it is larger than the outer diameter D1 of the liquid side connection portion 130, the tip end portion of the liquid side connection portion 130 is press-fitted into the drug side connection portion 230 in the screwed state. The outer peripheral surface 130S of the tip of the liquid side connecting portion 130 constitutes a contact region 130S1 in contact with the inner peripheral surface 230S of the drug side connecting portion 230. The outer peripheral surface of the liquid side connecting portion 130 other than the tip portion constitutes a non-contact region 130S2 separated from the inner peripheral surface 230S of the drug side connecting portion 230.

　薬剤側嵌合部２６０は、薬剤収容容器の口部に嵌合する部位である。薬剤側嵌合部２６０は、薬剤側支持部２２０のうち薬剤用中空針２１０が接続されている側（図２及び図３における下側）の面の縁部から薬剤用中空針２１０の軸方向と平行な方向に突出する形状を有している。薬剤側嵌合部２６０は、円筒状に形成されている。この薬剤側嵌合部２６０が薬剤収容容器の口部に嵌合することにより、薬剤用中空針２１０は、薬剤収容容器（バイアルのゴム栓部）に穿刺される。 The drug-side fitting portion 260 is a portion that fits into the mouth of the drug storage container. The drug-side fitting portion 260 is the axial direction of the drug-side hollow needle 210 from the edge of the surface of the drug-side support portion 220 to which the drug-use hollow needle 210 is connected (lower side in FIGS. 2 and 3). It has a shape that protrudes in the direction parallel to. The drug-side fitting portion 260 is formed in a cylindrical shape. When the drug-side fitting portion 260 is fitted to the mouth portion of the drug storage container, the drug hollow needle 210 is punctured into the drug storage container (rubber stopper portion of the vial).

　次に、以上に説明したトランスファーニードル１の使用方法について説明する。この使用方法は、従来と同じである。すなわち、液体用部材１００が液体収容容器に装着されるとともに、薬剤用部材２００が薬剤収容容器に装着される。 Next, the method of using the transfer needle 1 described above will be described. This usage is the same as before. That is, the liquid member 100 is mounted on the liquid storage container, and the drug member 200 is mounted on the drug storage container.

　そして、液体と薬剤との調製後、薬剤用部材２００から液体用部材１００が取り外される。具体的に、薬剤用部材２００に対して液体用部材１００を回転させることにより、液体側接続部１３０と薬剤側接続部２３０との螺合を解除させる。本実施形態のトランスファーニードル１では、液体側接続部１３０の外周面１３０Ｓは、螺合状態において薬剤側接続部２３０の内周面２３０Ｓから離間した非接触領域１３０Ｓ２を有しているため、液体用部材１００を薬剤用部材２００から分離するのに必要なトルクは、液体側接続部１３０の外周面１３０Ｓの全域が薬剤側接続部２３０の内周面２３０Ｓに接触している場合に比べて低減される。よって、液体用部材１００を薬剤用部材２００から分離させる作業が容易になる。 Then, after the liquid and the drug are prepared, the liquid member 100 is removed from the drug member 200. Specifically, by rotating the liquid member 100 with respect to the drug member 200, the screwing between the liquid side connection portion 130 and the drug side connection portion 230 is released. In the transfer needle 1 of the present embodiment, since the outer peripheral surface 130S of the liquid side connecting portion 130 has a non-contact region 130S2 separated from the inner peripheral surface 230S of the drug side connecting portion 230 in the screwed state, it is used for liquids. The torque required to separate the member 100 from the drug member 200 is reduced as compared with the case where the entire outer peripheral surface 130S of the liquid side connection portion 130 is in contact with the inner peripheral surface 230S of the drug side connection portion 230. NS. Therefore, the work of separating the liquid member 100 from the drug member 200 becomes easy.

　薬剤用部材２００から液体用部材１００が取り外された後、シリンジの注射針接続部が薬剤側ネジ部２５０に螺合される。 After the liquid member 100 is removed from the drug member 200, the injection needle connection portion of the syringe is screwed into the drug side screw portion 250.

　なお、今回開示された実施形態はすべての点で例示であって、制限的なものではないと考えられるべきである。本発明の範囲は、上記した実施形態の説明ではなく請求の範囲によって示され、さらに請求の範囲と均等の意味および範囲内でのすべての変更が含まれる。 It should be noted that the embodiments disclosed this time are examples in all respects and should not be considered to be restrictive. The scope of the present invention is shown by the scope of claims rather than the description of the above-described embodiment, and further includes all modifications within the meaning and scope equivalent to the scope of claims.

　例えば、図６に示されるように、液体側接続部１３０は、円筒状に形成された円筒部１３１と、円筒部１３１の外周面に接続された環状リブ１３２と、を有していてもよい。環状リブ１３２は、円筒部１３１の径方向に沿って環状につながる形状を有している。環状リブ１３２は、円筒部１３１の軸方向に沿って間隔を置いて設けられてもよい。この例では、円筒部１３１の径方向における環状リブ１３２の外端部が接触領域１３０Ｓ１を構成し、円筒部１３１の外周面が非接触領域１３０Ｓ２を構成する。この態様においても、液体用部材１００を薬剤用部材２００から分離するのに必要なトルクが低減される。 For example, as shown in FIG. 6, the liquid side connecting portion 130 may have a cylindrical portion 131 formed in a cylindrical shape and an annular rib 132 connected to the outer peripheral surface of the cylindrical portion 131. .. The annular rib 132 has a shape connected in an annular shape along the radial direction of the cylindrical portion 131. The annular ribs 132 may be provided at intervals along the axial direction of the cylindrical portion 131. In this example, the outer end of the annular rib 132 in the radial direction of the cylindrical portion 131 constitutes the contact region 130S1, and the outer peripheral surface of the cylindrical portion 131 constitutes the non-contact region 130S2. Also in this aspect, the torque required to separate the liquid member 100 from the drug member 200 is reduced.

　あるいは、図７及び図８に示されるように、液体側接続部１３０は、円筒部１３１と、円筒部１３１の外周面に接続された縦リブ１３３と、を有していてもよい。縦リブ１３３は、円筒部１３１の軸方向あるいはそれと交差する方向に沿って延びる形状を有している。縦リブ１３３は、円筒部１３１の周方向に沿って間隔を置いて設けられてもよい。この例では、円筒部１３１の径方向における縦リブ１３３の外端部が接触領域１３０Ｓ１を構成し、円筒部１３１の外周面が非接触領域１３０Ｓ２を構成する。この態様においても、液体用部材１００を薬剤用部材２００から分離するのに必要なトルクが低減される。 Alternatively, as shown in FIGS. 7 and 8, the liquid side connecting portion 130 may have a cylindrical portion 131 and a vertical rib 133 connected to the outer peripheral surface of the cylindrical portion 131. The vertical rib 133 has a shape extending along the axial direction of the cylindrical portion 131 or a direction intersecting the axial direction thereof. The vertical ribs 133 may be provided at intervals along the circumferential direction of the cylindrical portion 131. In this example, the outer end of the vertical rib 133 in the radial direction of the cylindrical portion 131 constitutes the contact region 130S1, and the outer peripheral surface of the cylindrical portion 131 constitutes the non-contact region 130S2. Also in this aspect, the torque required to separate the liquid member 100 from the drug member 200 is reduced.

　上述した例示的な実施形態は、以下の態様の具体例であることが当業者により理解される。 It will be understood by those skilled in the art that the above-mentioned exemplary embodiments are specific examples of the following aspects.

　この発明の一局面に従ったトランスファーニードルは、液体を収容する液体収容容器に装着可能な液体用部材と、薬剤を収容する薬剤収容容器に接続可能で、かつ、前記液体用部材に対して着脱可能な薬剤用部材と、を備え、前記液体用部材は、前記液体収容容器に穿刺することが可能な液体用中空針と、前記液体用中空針を支持する液体側支持部と、前記液体側支持部のうち前記液体用中空針が接続されている側とは反対側の部位に接続されており、前記薬剤用部材に接続される液体側接続部と、前記液体側接続部の周囲に形成されており、前記薬剤用部材に螺合する液体側ネジ部と、を有し、前記薬剤用部材は、前記薬剤収容容器に穿刺することが可能な薬剤用中空針と、前記薬剤用中空針を支持する薬剤側支持部と、前記薬剤側支持部を基準として前記薬剤用中空針が位置する側とは反対側に設けられており、前記液体側ネジ部に螺合する薬剤側ネジ部と、前記薬剤側ネジ部の内側に設けられており、前記液体側ネジ部と前記薬剤側ネジ部とが互いに螺合した螺合状態において前記液体側接続部に接続される薬剤側接続部と、を有し、前記液体側接続部は、前記液体用中空針内の流路と連通する液体側流路を有し、前記薬剤側接続部は、前記螺合状態において前記液体側流路と前記薬剤用中空針内の流路とを連通させる薬剤側流路を有し、前記液体側接続部及び前記薬剤側接続部の一方の接続部は、前記螺合状態において前記液体側接続部及び前記薬剤側接続部の他方の接続部内に挿入され、前記一方の接続部の外周面は、前記螺合状態において前記他方の接続部の内周面に接触する接触領域と、前記螺合状態において前記他方の接続部の前記内周面から離間した非接触領域と、を有する。 The transfer needle according to one aspect of the present invention can be connected to a liquid member that can be attached to a liquid storage container that stores a liquid and a drug storage container that stores a drug, and can be attached to and detached from the liquid member. The liquid member includes a possible drug member, and the liquid member includes a liquid hollow needle capable of piercing the liquid storage container, a liquid side support portion for supporting the liquid hollow needle, and the liquid side. It is connected to a portion of the support portion opposite to the side to which the hollow needle for liquid is connected, and is formed around the liquid side connection portion connected to the drug member and the liquid side connection portion. The drug member has a liquid-side threaded portion that is screwed into the drug member, and the drug member includes a drug hollow needle that can be pierced into the drug storage container and the drug hollow needle. A drug-side support portion that supports the drug and a drug-side screw portion that is provided on the side opposite to the side where the drug hollow needle is located with reference to the drug-side support portion and is screwed into the liquid-side screw portion. , A drug-side connection portion provided inside the drug-side screw portion and connected to the liquid-side connection portion in a screwed state in which the liquid-side screw portion and the drug-side screw portion are screwed together. The liquid side connection portion has a liquid side flow path communicating with the flow path in the liquid hollow needle, and the drug side connection portion has the liquid side flow path and the liquid side flow path in the screwed state. It has a drug-side flow path that communicates with the flow path in the drug-use hollow needle, and one connection of the liquid-side connection and the drug-side connection is the liquid-side connection and the liquid-side connection in the screwed state. The outer peripheral surface of the one connecting portion, which is inserted into the other connecting portion of the drug-side connecting portion, has a contact region that contacts the inner peripheral surface of the other connecting portion in the screwed state and the above-mentioned in the screwed state. The other connecting portion has a non-contact region separated from the inner peripheral surface.

　このトランスファーニードルでは、液体側接続部及び薬剤側接続部の一方の接続部の外周面は、螺合状態において他方の接続部の内周面から離間した非接触領域を有しているため、液体用部材を薬剤用部材から分離するのに必要なトルクは、一方の接続部の外周面の全域が他方の接続部の内周面に接触している場合に比べて低減される。 In this transfer needle, since the outer peripheral surface of one connection portion of the liquid side connection portion and the drug side connection portion has a non-contact region separated from the inner peripheral surface of the other connection portion in the screwed state, the liquid The torque required to separate the member from the drug member is reduced as compared to the case where the entire outer peripheral surface of one connection is in contact with the inner peripheral surface of the other connection.

　また、前記一方の接続部の前記外周面の径は、前記一方の接続部の軸方向に一定であり、前記他方の接続部の前記内周面は、前記薬剤側支持部から離間するにしたがって次第に拡径するテーパー状に形成されており、前記一方の接続部の先端部は、前記接触領域を構成し、前記一方の接続部の基端部は、前記非接触領域を構成することが好ましい。 Further, the diameter of the outer peripheral surface of the one connecting portion is constant in the axial direction of the one connecting portion, and the inner peripheral surface of the other connecting portion is separated from the drug side supporting portion. It is preferably formed in a tapered shape that gradually expands in diameter, the tip end portion of the one connecting portion constitutes the contact region, and the base end portion of the one connecting portion constitutes the non-contact region. ..

　また、前記一方の接続部は、前記液体側接続部であり、前記他方の接続部は、前記薬剤側接続部であり、前記薬剤側ネジ部は、シリンジの注射針接続部に螺合可能に構成されていることが好ましい。 Further, the one connection portion is the liquid side connection portion, the other connection portion is the drug side connection portion, and the drug side screw portion can be screwed into the injection needle connection portion of the syringe. It is preferably configured.

　１　トランスファーニードル、１００　液体用部材、１１０　液体用中空針、１２０　液体側支持部、１３０　液体側接続部、１３０Ｓ　外周面、１３０Ｓ１　接触領域、１３０Ｓ２　非接触領域、１４０　包囲筒、１４０Ｓ　内周面、１５０　液体側ネジ部、１６０　液体側嵌合部、１７０　周壁、２００　薬剤用部材、２１０　薬剤用中空針、２２０　薬剤側支持部、２３０　薬剤側接続部、２３０Ｓ　内周面、２５０　薬剤側ネジ部、２６０　薬剤側嵌合部、３００　フィルター。 1 Transfer needle, 100 Liquid member, 110 Liquid hollow needle, 120 Liquid side support part, 130 Liquid side connection part, 130S outer peripheral surface, 130S1 contact area, 130S2 non-contact area, 140 surrounding cylinder, 140S inner peripheral surface, 150 Liquid side screw part, 160 liquid side fitting part, 170 peripheral wall, 200 drug member, 210 drug hollow needle, 220 drug side support part, 230 drug side connection part, 230S inner peripheral surface, 250 drug side screw part, 260 Drug side fitting part, 300 filter.

Claims (3)

　液体を収容する液体収容容器に装着可能な液体用部材と、
　薬剤を収容する薬剤収容容器に接続可能で、かつ、前記液体用部材に対して着脱可能な薬剤用部材と、を備え、
　前記液体用部材は、
　前記液体収容容器に穿刺することが可能な液体用中空針と、
　前記液体用中空針を支持する液体側支持部と、
　前記液体側支持部のうち前記液体用中空針が接続されている側とは反対側の部位に接続されており、前記薬剤用部材に接続される液体側接続部と、
　前記液体側接続部の周囲に形成されており、前記薬剤用部材に螺合する液体側ネジ部と、を有し、
　前記薬剤用部材は、
　前記薬剤収容容器に穿刺することが可能な薬剤用中空針と、
　前記薬剤用中空針を支持する薬剤側支持部と、
　前記薬剤側支持部を基準として前記薬剤用中空針が位置する側とは反対側に設けられており、前記液体側ネジ部に螺合する薬剤側ネジ部と、
　前記薬剤側ネジ部の内側に設けられており、前記液体側ネジ部と前記薬剤側ネジ部とが互いに螺合した螺合状態において前記液体側接続部に接続される薬剤側接続部と、を有し、
　前記液体側接続部は、前記液体用中空針内の流路と連通する液体側流路を有し、
　前記薬剤側接続部は、前記螺合状態において前記液体側流路と前記薬剤用中空針内の流路とを連通させる薬剤側流路を有し、
　前記液体側接続部及び前記薬剤側接続部の一方の接続部は、前記螺合状態において前記液体側接続部及び前記薬剤側接続部の他方の接続部内に挿入され、
　前記一方の接続部の外周面は、
　前記螺合状態において前記他方の接続部の内周面に接触する接触領域と、
　前記螺合状態において前記他方の接続部の前記内周面から離間した非接触領域と、を有する、トランスファーニードル。 A liquid member that can be attached to a liquid storage container that holds liquid,
It is provided with a drug member that can be connected to a drug storage container that stores the drug and that can be attached to and detached from the liquid member.
The liquid member is
A hollow needle for liquid that can puncture the liquid storage container,
The liquid side support portion that supports the liquid hollow needle and
A liquid-side connecting portion that is connected to a portion of the liquid-side supporting portion that is opposite to the side to which the liquid hollow needle is connected and is connected to the pharmaceutical member.
It has a liquid side threaded portion that is formed around the liquid side connecting portion and is screwed into the drug member.
The drug member
A hollow needle for medicine that can be punctured into the drug storage container,
The drug side support portion that supports the drug hollow needle and
A drug-side screw portion that is provided on the side opposite to the side on which the drug-use hollow needle is located with reference to the drug-side support portion and is screwed into the liquid-side screw portion, and a drug-side screw portion.
A drug-side connection portion provided inside the drug-side screw portion and connected to the liquid-side connection portion in a screwed state in which the liquid-side screw portion and the drug-side screw portion are screwed together. Have and
The liquid side connection portion has a liquid side flow path communicating with the flow path in the liquid hollow needle.
The drug-side connection portion has a drug-side flow path that allows the liquid-side flow path and the flow path in the drug-use hollow needle to communicate with each other in the screwed state.
One of the liquid-side connection and the drug-side connection is inserted into the other connection of the liquid-side connection and the drug-side connection in the screwed state.
The outer peripheral surface of the one connection portion is
In the screwed state, the contact region that contacts the inner peripheral surface of the other connecting portion and
A transfer needle having a non-contact region of the other connecting portion separated from the inner peripheral surface in the screwed state. 　前記一方の接続部の前記外周面の径は、前記一方の接続部の軸方向に一定であり、
　前記他方の接続部の前記内周面は、前記薬剤側支持部から離間するにしたがって次第に拡径するテーパー状に形成されており、
　前記一方の接続部の先端部は、前記接触領域を構成し、前記一方の接続部の基端部は、前記非接触領域を構成する、請求項１に記載のトランスファーニードル。 The diameter of the outer peripheral surface of the one connecting portion is constant in the axial direction of the one connecting portion.
The inner peripheral surface of the other connecting portion is formed in a tapered shape in which the diameter gradually increases as the distance from the drug-side supporting portion increases.
The transfer needle according to claim 1, wherein the tip end portion of the one connecting portion constitutes the contact region, and the base end portion of the one connecting portion constitutes the non-contact region. 　前記一方の接続部は、前記液体側接続部であり、
　前記他方の接続部は、前記薬剤側接続部であり、
　前記薬剤側ネジ部は、シリンジの注射針接続部に螺合可能に構成されている、請求項１又は２に記載のトランスファーニードル。 The one connection portion is the liquid side connection portion, and is
The other connection portion is the drug side connection portion, and is
The transfer needle according to claim 1 or 2, wherein the drug-side screw portion is configured to be screwable to an injection needle connection portion of a syringe.
PCT/JP2021/002321 2020-01-24 2021-01-22 Transfer needle Ceased WO2021149819A1 (en)

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JP2020009791 2020-01-24
JP2020-009791 2020-01-24
JP2020141299A JP7528631B2 (en) 2020-01-24 2020-08-25 Transfer Needle
JP2020-141299 2020-08-25

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005034457A (en) * 2003-07-17 2005-02-10 Nipro Corp Transfer needle
JP2014000220A (en) * 2012-06-18 2014-01-09 Nipro Corp Medicament preparation appliance
JP2017109075A (en) * 2015-12-15 2017-06-22 株式会社ジェイ・エム・エス Female connector

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005034457A (en) * 2003-07-17 2005-02-10 Nipro Corp Transfer needle
JP2014000220A (en) * 2012-06-18 2014-01-09 Nipro Corp Medicament preparation appliance
JP2017109075A (en) * 2015-12-15 2017-06-22 株式会社ジェイ・エム・エス Female connector

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