WO2024143200A1 - Medical instrument cap - Google Patents

Medical instrument cap Download PDF

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Publication number
WO2024143200A1
WO2024143200A1 PCT/JP2023/046153 JP2023046153W WO2024143200A1 WO 2024143200 A1 WO2024143200 A1 WO 2024143200A1 JP 2023046153 W JP2023046153 W JP 2023046153W WO 2024143200 A1 WO2024143200 A1 WO 2024143200A1
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Prior art keywords
medical instrument
sheet
flow path
members
instrument cap
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PCT/JP2023/046153
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French (fr)
Japanese (ja)
Inventor
勇 甲田
照幸 小林
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株式会社 塚田メディカル・リサーチ
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Publication of WO2024143200A1 publication Critical patent/WO2024143200A1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • 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
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/20—Closure caps or plugs for connectors or open ends of tubes
    • 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
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22—Valves or arrangement of valves
    • A61M39/24—Check- or non-return valves

Definitions

  • the present invention relates to a cap for a medical device that functions as an external opening and closing valve for a medical device that is placed in the human body, such as a urethral catheter.
  • the object of the present invention is to provide a cap for medical instruments that can solve the problems of the conventional technology described above and prevent the backflow of fluids such as urine.
  • the check valve may be formed of an elastic body.
  • the check valve may be formed of a pair of opposing sheet-like members.
  • Each of the pair of sheet-like members may have one end fixed to the inner circumferential surface of the flow path and the other end located closer to the tip portion than the one end, and the pair of sheet-like members may abut against each other at the other end.
  • Each of the pair of sheet-like members may have the other end located approximately at the center of the cross section of the flow path.
  • the sheet-like members may be curved such that the inclination with respect to the direction in which the flow path extends becomes smaller the closer to the other end.
  • the present invention provides a cap for medical instruments that can prevent fluids such as urine from flowing back.
  • FIG. 2 is a front view of the medical instrument cap according to the first embodiment with the lid portion in a closed state.
  • FIG. 2 is a cross-sectional side view of the medical instrument cap with the lid portion closed.
  • FIG. 2 is a top view showing a schematic diagram of the inside of the urine drainage flow path.
  • FIG. 4 shows a cross-sectional view of a medical instrument cap according to a second embodiment.
  • FIG. 1 shows a front view of the medical instrument cap with the lid portion closed
  • FIG. 2 shows a cross-sectional side view of the medical instrument cap with the lid portion closed
  • FIG. 3 shows a top view diagrammatically illustrating the inside of the urine drainage flow path.
  • the medical instrument cap 100 is designed to be connected to a urinary catheter, a urine bag, or the like via a urination tube (not shown).
  • the medical instrument cap 100 is made of elastic resin, and as shown in FIG. 1, has a connection plug main body 10 and a lid 30 that are molded as one piece.

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  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Pulmonology (AREA)
  • Vascular Medicine (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

The purpose of the present invention is to provide a medical instrument cap that makes it possible to prevent backflow of a fluid such as urine.　Provided is a medical instrument cap 100, said medical instrument cap 100 comprising a body part 10 which is formed to be connectable to an external member, wherein: formed in the body part 10 is a flow path 14 passing through to a tip end part 13 on the opposite side from a base end part 12 for fluid connection with the external member; and the flow path 14 is provided with a check valve 17 for preventing a fluid from flowing toward the base end part 12 from the tip end part 13.

Description

医療器具用キャップMedical Instrument Caps
　本発明は、尿道カテーテル等の人体留置医療用器具の外部開閉弁として機能する医療器具用キャップに関する。 The present invention relates to a cap for a medical device that functions as an external opening and closing valve for a medical device that is placed in the human body, such as a urethral catheter.
　従来、排尿障害により尿管理が難しい場合に尿道カテーテルの人体留置医療用器具の外部開閉弁として機能する医療器具用キャップが用いられている（例えば、特許文献１参照）。尿道カテーテルと接続された医療器具用キャップは、その先を尿バッグに接続することで膀胱からの尿を尿バッグに蓄尿させ、また、キャップを閉じることで膀胱の蓄尿機能を活かすことができる。脳血管障害者、脊髄損傷者等、手の巧緻性の問題をもつ使用者でも簡単に操作できる尿道カテーテル用キャップが提案されている。 　Conventionally, medical device caps that function as external opening and closing valves for indwelling medical devices such as urethral catheters have been used when urinary management is difficult due to urination disorders (see, for example, Patent Document 1). The medical device cap connected to the urethral catheter has its end connected to a urine bag, allowing urine from the bladder to be stored in the urine bag, and the bladder's urine storage function can be utilized by closing the cap. A urethral catheter cap has been proposed that can be easily operated by users with dexterity problems, such as those with cerebrovascular disorders or spinal cord injuries.
特開平９－２０６３７０号公報Japanese Patent Application Laid-Open No. 9-206370
　しかしながら、上記従来の技術による医療器具用キャップは、医療器具用キャップの蓋が開いた状態で尿道カテーテルを持ち上げたり、医療器具用キャップを介して尿道カテーテルに接続された尿バッグを持ち上げたりした場合や、力が加わって尿バッグが収縮した場合等に、尿道カテーテル内の尿が逆流して膀胱内に戻ってしまう恐れがあった。このため、外気に触れた尿が体内に戻ることで、使用者が細菌に感染してしまう恐れがあった。 However, with the medical instrument caps made using the above-mentioned conventional technology, there was a risk that urine in the urethral catheter would flow backward and return to the bladder if the urethral catheter was lifted with the lid of the medical instrument cap open, if the urine bag connected to the urethral catheter was lifted via the medical instrument cap, or if the urine bag contracted due to the application of force. This meant that there was a risk of the user becoming infected with bacteria if urine exposed to the outside air returned to the body.
　本発明の目的は、上述した従来の技術が有する課題を解消し、尿等の流体が逆流することを防止することのできる医療器具用キャップを提供することにある。 The object of the present invention is to provide a cap for medical instruments that can solve the problems of the conventional technology described above and prevent the backflow of fluids such as urine.
　本発明は、医療器具用キャップにおいて、外部部材に接続可能に形成された本体部を備え、前記本体部は、前記外部部材に流体的に接続されるための基端部から反対側の先端部まで貫通する流路が形成されており、前記流路は、流体が前記先端部から前記基端部へ向かって流れることを防止するための逆止弁が設けられたことを特徴とする。 The present invention is a medical device cap comprising a main body portion formed to be connectable to an external member, the main body portion being formed with a flow path penetrating from a base end portion for fluid connection to the external member to a tip end portion on the opposite side, the flow path being provided with a check valve for preventing fluid from flowing from the tip end toward the base end.
　この場合において、前記逆止弁は、弾性体で形成されていてもよい。前記逆止弁は、対向する一対のシート状部材で形成されていてもよい。一対の前記シート状部材の各々は、一端が前記流路の内周面に固定されるとともに、他端が前記一端に比べて前記先端部の近くに位置しており、一対の前記シート状部材は前記他端で互いに対して当接していてもよい。一対の前記シート状部材の各々は、前記他端が前記流路の断面の略中心に位置していてもよい。前記シート状部材は、前記他端に近い部分ほど、前記流路が延在する方向に対する傾きが小さくなるように湾曲していてもよい。 In this case, the check valve may be formed of an elastic body. The check valve may be formed of a pair of opposing sheet-like members. Each of the pair of sheet-like members may have one end fixed to the inner circumferential surface of the flow path and the other end located closer to the tip portion than the one end, and the pair of sheet-like members may abut against each other at the other end. Each of the pair of sheet-like members may have the other end located approximately at the center of the cross section of the flow path. The sheet-like members may be curved such that the inclination with respect to the direction in which the flow path extends becomes smaller the closer to the other end.
　本発明では、尿等の流体が逆流することを防止することのできる医療器具用キャップを提供することができる。 The present invention provides a cap for medical instruments that can prevent fluids such as urine from flowing back.
第１実施形態に係る蓋部が閉じた状態の医療器具用キャップの正面図を示す。FIG. 2 is a front view of the medical instrument cap according to the first embodiment with the lid portion in a closed state. 蓋部が閉じた状態の医療器具用キャップを側方から見た断面図を示す。FIG. 2 is a cross-sectional side view of the medical instrument cap with the lid portion closed. 排尿流路内を模式的に示した上面図を示す。FIG. 2 is a top view showing a schematic diagram of the inside of the urine drainage flow path. 第２実施形態に係る医療器具用キャップの断面図を示す。FIG. 4 shows a cross-sectional view of a medical instrument cap according to a second embodiment.
　以下、図面を参照して、本発明の好適な実施形態について説明する。
（第１実施形態） Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
First Embodiment
　以下、本発明の一実施形態に係る医療器具用キャップについて、図面を用いて説明する。
　図１は、蓋部が閉じた状態の医療器具用キャップの正面図を示し、図２は、蓋部が閉じた状態の医療器具用キャップを側方から見た断面図を示し、図３は、排尿流路内を模式的に示した上面図を示す。 Hereinafter, a medical instrument cap according to one embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a front view of the medical instrument cap with the lid portion closed, FIG. 2 shows a cross-sectional side view of the medical instrument cap with the lid portion closed, and FIG. 3 shows a top view diagrammatically illustrating the inside of the urine drainage flow path.
　医療器具用キャップ１００は、尿道カテーテルや尿バッグ等に排尿チューブ（図示せず）などを介して接続されるように設けられている。医療器具用キャップ１００は、弾力性を有する樹脂で形成されており、図１に示すように、一体で成形された接続プラグ本体部１０と蓋部３０とを有している。 The medical instrument cap 100 is designed to be connected to a urinary catheter, a urine bag, or the like via a urination tube (not shown). The medical instrument cap 100 is made of elastic resin, and as shown in FIG. 1, has a connection plug main body 10 and a lid 30 that are molded as one piece.
　接続プラグ本体部１０は、尿道カテーテルや尿バッグ等の外部部材にチューブ等を介して接続可能な接続部１１が形成されている。接続プラグ本体部１０は、図２に示すように、外部部材に流体的に接続されるための基端部１２から反対側の先端部１３まで貫通する排尿流路１４が形成されている。接続プラグ本体部１０は、先端部１３側に、蓋部３０が載置される座部１５が形成されている。排尿流路１４は、接続部１１及び座部１５の中心を貫通するように円形形状に形成されており、先端部１３が座部１５上に位置している。座部１５には、蓋部３０に対向するように円筒形状の磁石２９が組み込まれている。 The connection plug body 10 is formed with a connection part 11 that can be connected to an external member such as a urethral catheter or a urine bag via a tube or the like. As shown in FIG. 2, the connection plug body 10 is formed with a urine discharge flow path 14 that penetrates from a base end 12 for fluid connection to an external member to a tip end 13 on the opposite side. The connection plug body 10 is formed with a seat 15 on the tip end 13 side on which the lid 30 is placed. The urine discharge flow path 14 is formed in a circular shape so as to penetrate the connection part 11 and the center of the seat 15, and the tip end 13 is located on the seat 15. A cylindrical magnet 29 is incorporated in the seat 15 so as to face the lid 30.
　接続プラグ本体部１０は、排尿流路１４内に逆止弁１７が設けられている。この逆止弁１７は、接続プラグ本体部１０の排尿流路１４内を基端部１２から先端部１３に向けて流れる流体は通す一方、先端部１３から基端部１２に向けて流れようとする流体は通さないようになっている。逆止弁１７は、樹脂製のシート状部材１７ａ，１７ｂで接続プラグ本体部１０と一体で形成されている。より具体的には、逆止弁１７は、対向する一対のシート状部材１７ａ，１７ｂで形成されており、シート状部材１７ａ，１７ｂの各々は、一端１８及び側部が排尿流路１４の内周面に固定されるとともに、他端１９が排尿流路１４の流路断面の略中心、かつ、一端１８に比べて先端部１３の近くに位置している。シート状部材１７ａ，１７ｂの他端１９は、図３に示すように、先端部１３側から見たときに排尿流路１４が延在する方向に対して垂直な方向に直線的に延在した形状を有している。一対のシート状部材１７ａ，１７ｂの各々は、他端１９で互いに対して当接しており、一方のシート状部材１７ａの他端１９と他方のシート状部材１７ｂの他端１９とは直線的に当接している。逆止弁１７は、一方のシート状部材１７ａの他端１９と他方のシート状部材１７ｂの他端１９との間で開閉する開口部１７ｃでのみ流体が流通可能になっている。 The connection plug body 10 is provided with a check valve 17 in the urine discharge flow path 14. This check valve 17 passes fluid flowing from the base end 12 to the tip end 13 in the urine discharge flow path 14 of the connection plug body 10, but does not pass fluid flowing from the tip end 13 to the base end 12. The check valve 17 is formed integrally with the connection plug body 10 from resin sheet-like members 17a, 17b. More specifically, the check valve 17 is formed from a pair of opposing sheet-like members 17a, 17b, and each of the sheet-like members 17a, 17b has one end 18 and a side fixed to the inner circumferential surface of the urine discharge flow path 14, and the other end 19 is located approximately in the center of the flow path cross section of the urine discharge flow path 14 and closer to the tip end 13 than the one end 18. As shown in FIG. 3, the other ends 19 of the sheet-like members 17a and 17b have a shape that extends linearly in a direction perpendicular to the extension direction of the urine discharge flow path 14 when viewed from the tip end 13 side. The other ends 19 of the pair of sheet-like members 17a and 17b abut against each other, and the other end 19 of one sheet-like member 17a and the other end 19 of the other sheet-like member 17b abut linearly. The check valve 17 allows fluid to flow only through an opening 17c that opens and closes between the other end 19 of one sheet-like member 17a and the other end 19 of the other sheet-like member 17b.
　シート状部材１７ａ，１７ｂは、図２に示すように、他端１９に近い部分ほど、排尿流路１４が延在する方向に対する傾きが小さくなるように湾曲している。これにより、排尿流路１４内を先端部１３から基端部１２に向けて流体が流れようとするほど、一対のシート状部材１７ａ，１７ｂの他端１９どうしがより密着して流体を逆流させ難くなっている。また、シート状部材１７ａ，１７ｂは、容易にたわんで逆止弁１７よりも先端部１３側における排尿流路１４内の容積を拡大させることができる。このため、蓋部３０を閉じて蓋部３０のシール部３２が排尿流路１４内に差し込まれたときに、シール部３２が排尿流路１４内に挿入されたことにより逆止弁１７に向けて押し込まれる流体を保持することができるようになっている。 As shown in FIG. 2, the sheet-like members 17a and 17b are curved so that the inclination with respect to the direction in which the urine discharge flow path 14 extends becomes smaller the closer to the other end 19. As a result, the more fluid flows from the tip 13 to the base end 12 inside the urine discharge flow path 14, the more the other ends 19 of the pair of sheet-like members 17a and 17b come into closer contact with each other, making it more difficult for the fluid to flow back. In addition, the sheet-like members 17a and 17b can easily bend to expand the volume of the urine discharge flow path 14 on the tip 13 side of the check valve 17. Therefore, when the lid 30 is closed and the seal portion 32 of the lid 30 is inserted into the urine discharge flow path 14, the seal portion 32 can be inserted into the urine discharge flow path 14 to hold the fluid that is pushed toward the check valve 17 by the seal portion 32 being inserted into the urine discharge flow path 14.
　蓋部３０は、図１に示すように、ヒンジ部３１で揺動可能に接続プラグ本体部１０に設けられるとともに、ヒンジ部３１を支点に閉じたときに中間部２０と嵌合可能に形成されている。蓋部３０は、図２に示すように、蓋部３０を接続プラグ本体部１０に対して閉じたときに接続プラグ本体部１０の磁石２９と対向する位置に鉄板３６が組み込まれている。 As shown in FIG. 1, the lid portion 30 is provided on the connection plug body portion 10 so as to be able to swing about the hinge portion 31, and is formed so as to be able to fit into the intermediate portion 20 when closed with the hinge portion 31 as a fulcrum. As shown in FIG. 2, the lid portion 30 has an iron plate 36 built in at a position that faces the magnet 29 of the connection plug body portion 10 when the lid portion 30 is closed on the connection plug body portion 10.
　蓋部３０は、内面の中心部から立ち上がった軸部３０ａが形成されており、この軸部３０ａには、円筒形状の例えばシリコーンゴムからなるシール部３２が組み付けられている。具体的には、軸部３０ａは、シール部３２を貫通するとともに軸部３０ａの端部に形成されたフランジ部３０ｂでシール部３２を保持するようになっている。このとき、シール部３２は、軸部３０ａに沿って圧縮されて縮むことができるように軸部３０ａとの接触面が軸部３０ａの外周面に対して軸部３０ａが延在する方向に摺動可能に設けられている。すなわち、蓋部３０を閉じたときにシール部３２は、排尿流路１４の内周面に密着するとともに、フランジ部３０ｂから離れるように軸部３０ａ上で収縮可能になっている。 The lid 30 has a shaft 30a that rises from the center of the inner surface, and a cylindrical seal 32 made of, for example, silicone rubber is attached to the shaft 30a. Specifically, the shaft 30a penetrates the seal 32 and holds the seal 32 with a flange 30b formed at the end of the shaft 30a. At this time, the seal 32 is arranged so that the contact surface with the shaft 30a can slide against the outer circumferential surface of the shaft 30a in the direction in which the shaft 30a extends, so that the seal 32 can be compressed and shrunk along the shaft 30a. In other words, when the lid 30 is closed, the seal 32 is in close contact with the inner circumferential surface of the urine discharge flow path 14, and can be shrunk on the shaft 30a so as to move away from the flange 30b.
　本実施形態に係る医療器具用キャップ１００は、外部部材に接続可能に形成された接続プラグ本体部１０を備え、接続プラグ本体部１０は、外部部材に流体的に接続されるための基端部１２から反対側の先端部１３まで貫通する排尿流路１４が形成されており、排尿流路１４は、流体が先端部１３から基端部１２へ向かって流れることを防止するための逆止弁１７が設けられている。これにより、蓋部３０を開いた状態でも、排尿流路１４内を先端部１３から基端部１２へ流れないため、尿等の流体が逆流することを防止することができる。すなわち、蓋部３０が開いた状態で尿道カテーテルを持ち上げたり、医療器具用キャップ１００を介して尿道カテーテルに接続された尿バッグを持ち上げたりした場合や、力が加わって尿バッグが収縮した場合等に、尿道カテーテル内の尿が逆流して膀胱内に戻ることがない。このため、外気に触れた尿が体内に戻ることで、使用者が細菌に感染してしまうことを防止することができる。 The medical instrument cap 100 according to this embodiment includes a connection plug body 10 formed to be connectable to an external member, and the connection plug body 10 is formed with a urination flow path 14 that penetrates from the base end 12 for fluidly connecting to an external member to the tip end 13 on the opposite side, and the urination flow path 14 is provided with a check valve 17 for preventing fluid from flowing from the tip end 13 to the base end 12. As a result, even when the lid 30 is open, the urination flow path 14 does not flow from the tip end 13 to the base end 12, so that it is possible to prevent fluids such as urine from flowing back. In other words, when the urinary catheter is lifted with the lid 30 open, when the urine bag connected to the urinary catheter is lifted via the medical instrument cap 100, or when the urine bag is contracted by the application of force, the urine in the urinary catheter does not flow back and return to the bladder. This makes it possible to prevent the user from becoming infected with bacteria due to urine that has been exposed to the outside air returning to the body.
　また、尿バッグよりも尿道カテーテルに近い位置に接続される医療器具用キャップ１００に逆止弁１７が設けられているため、尿バッグに逆止弁を設ける場合に比べて、尿道カテーテルと逆止弁１７との間に貯留される尿の量を少なくすることができ、より望ましい。 In addition, because the check valve 17 is provided on the medical instrument cap 100, which is connected to a position closer to the urethral catheter than the urine bag, the amount of urine stored between the urethral catheter and the check valve 17 can be reduced compared to when a check valve is provided on the urine bag, which is more desirable.
（第２実施形態）
　図４は、第２実施形態に係る医療器具用キャップの断面図を示す。
　以下、第１実施形態と実質的に同じ部材に同じ符号を用いて説明する。 Second Embodiment
FIG. 4 shows a cross-sectional view of a medical instrument cap according to the second embodiment.
In the following description, the same reference numerals are used to designate the same members as those in the first embodiment.
　本実施形態に係る医療器具用キャップ２００は、図４に示すように、接続プラグ本体部１０と蓋部３０との間に中間部２０が設けられたこと、及び逆止弁２２の形状が第１実施形態に係る医療器具用キャップ１００とは異なっている。なお、図４においては、中間部２０及び蓋部３０が少し開いた状態を示している。 As shown in FIG. 4, the medical instrument cap 200 according to this embodiment differs from the medical instrument cap 100 according to the first embodiment in that an intermediate portion 20 is provided between the connection plug body 10 and the lid portion 30, and the shape of the check valve 22 is different. Note that FIG. 4 shows the intermediate portion 20 and the lid portion 30 in a slightly open state.
　第２実施形態に係る逆止弁２２は、シート状部材２２ａ，２２ｂが湾曲しておらず、平面上に形成されており、他端２３近傍で屈曲している。一対のシート状部材２２ａ，２２ｂは他端２３で互いに対して当接しており、一方のシート状部材２２ａの他端２３と他方のシート状部材２２ｂの他端２３とは排尿流路１４が延びる方向に延在する平坦な矩形の面で接触するようになっている。 In the check valve 22 according to the second embodiment, the sheet-like members 22a and 22b are not curved, but are formed on a flat surface and are bent near the other end 23. The pair of sheet-like members 22a and 22b abut against each other at the other end 23, and the other end 23 of one sheet-like member 22a and the other end 23 of the other sheet-like member 22b are in contact with each other at a flat rectangular surface extending in the direction in which the urine discharge flow path 14 extends.
　中間部２０は、第１のヒンジ部２１で接続プラグ本体部１０に揺動可能に設けられており、蓋部３０は、第２のヒンジ部３１で中間部２０に揺動可能に設けられている。中間部２０は、排気流路２４が形成されており、排気流路２４内に、気体は通す一方、液体は通さない疎水フィルタ２８が設けられている。排気流路２４は、疎水フィルタ２８が設けられていることにより、外部部材から接続プラグ本体部１０を通って本体側端部２６から流入した尿等の液体は蓋側端部２７まで通さないが、空気等の気体は蓋側端部２７まで通すようになっている。すなわち、排気流路２４は、蓋部３０が開いて中間部２０と嵌合していないときに空気等の気体のみを蓋側端部２７から排出できるようになっている。 The intermediate section 20 is pivotally attached to the connection plug body 10 by a first hinge section 21, and the lid section 30 is pivotally attached to the intermediate section 20 by a second hinge section 31. The intermediate section 20 has an exhaust flow path 24 formed therein, and a hydrophobic filter 28 is provided in the exhaust flow path 24, which allows gas to pass but does not allow liquid to pass through. The exhaust flow path 24 is provided with a hydrophobic filter 28, which allows liquids such as urine that flow from an external member through the connection plug body 10 to the body side end 26 to pass through to the lid side end 27, but allows gases such as air to pass through to the lid side end 27. In other words, the exhaust flow path 24 allows only gases such as air to be discharged from the lid side end 27 when the lid section 30 is open and not engaged with the intermediate section 20.
　また、中間部２０には磁石２９が設けられており、接続プラグ本体部１０に設けられた鉄板１６及び蓋部３０に設けられた鉄板３６を引き寄せるようになっている。これにより、中間部２０は、磁石２９の磁力により、第１のヒンジ部２１を支点に接続プラグ本体部１０に対して半自動的に閉じ、排尿流路１４と排気流路２４とを真っ直ぐに嵌合させて流体的に接続することができる。また、蓋部３０は、磁石２９の磁力により、第２のヒンジ部３１を支点に中間部２０に対して半自動的に閉じ、排気流路２４を閉塞させることができる。 Furthermore, a magnet 29 is provided in the intermediate portion 20, which attracts the iron plate 16 provided in the connection plug main body portion 10 and the iron plate 36 provided in the lid portion 30. As a result, the intermediate portion 20 can be semi-automatically closed to the connection plug main body portion 10 by the magnetic force of the magnet 29, with the first hinge portion 21 as the fulcrum, and the urine flow path 14 and the exhaust flow path 24 can be fitted together straight to fluidly connect them. Furthermore, the lid portion 30 can be semi-automatically closed to the intermediate portion 20 by the magnetic force of the magnet 29, with the second hinge portion 31 as the fulcrum, to block the exhaust flow path 24.
　以上、実施形態に基づいて本発明を説明してきたが、本発明はこれに限定しない。例えば、第１実施形態及び第２実施形態では、接続プラグ本体部１０と一体で形成された樹脂製のシート状部材１７ａ，１７ｂ，２０ａ，２０ｂを用いているが、これに限定されない。シート状部材１７ａ，１７ｂ，２０ａ，２０ｂが弾性体で形成されていれば、接続プラグ本体部１０と別体で形成されて排尿流路１４内に組み込まれていてもよい。 The present invention has been described above based on the embodiments, but the present invention is not limited to this. For example, in the first and second embodiments, resin sheet-like members 17a, 17b, 20a, and 20b formed integrally with the connection plug body 10 are used, but the present invention is not limited to this. If the sheet-like members 17a, 17b, 20a, and 20b are formed of an elastic material, they may be formed separately from the connection plug body 10 and incorporated into the urine discharge flow path 14.
　また、第１実施形態と第２実施形態とでは、異なる形状の逆止弁１７，２２を用いているが、逆止弁１７，２２の形状はこれに限定されない。シート状部材を用いた逆止弁であれば他の異なる形状を有していてもよい。 In addition, in the first and second embodiments, check valves 17, 22 of different shapes are used, but the shapes of check valves 17, 22 are not limited to this. Check valves using sheet-like members may have other different shapes.
　　１０…接続プラグ本体部
　　１１…接続部
　　１２…基端部
　　１３…先端部
　　１４…排尿流路
　　１５…座部
　　１６…鉄板
　　１７…逆止弁
　　１７ａ…シート状部材
　　１７ｂ…シート状部材
　　１７ｃ…開口部
　　１８…一端
　　１９…他端
　　２０…中間部
　　２１…ヒンジ部
　　２２…逆止弁
　　２２ａ…シート状部材
　　２２ｂ…シート状部材
　　２３…他端
　　２４…排気流路
　　２６…本体側端部
　　２７…蓋側端部
　　２８…疎水フィルタ
　　２９…磁石
　　３０…蓋部
　　３０ａ…軸部
　　３０ｂ…フランジ部
　　３１…ヒンジ部
　　３２…シール部
　　３６…鉄板
　　１００…医療器具用キャップ
　　２００…医療器具用キャップ
  LIST OF SYMBOLS 10: Connection plug main body 11: Connection portion 12: Base end portion 13: Tip portion 14: Urine discharge flow path 15: Seat portion 16: Iron plate 17: Check valve 17a: Sheet-like member 17b: Sheet-like member 17c: Opening 18: One end 19: Other end 20: Middle portion 21: Hinge portion 22: Check valve 22a: Sheet-like member 22b: Sheet-like member 23: Other end 24: Exhaust flow path 26: Main body side end portion 27: Lid side end portion 28: Hydrophobic filter 29: Magnet 30: Lid portion 30a: Shaft portion 30b: Flange portion 31: Hinge portion 32: Seal portion 36: Iron plate 100: Medical instrument cap 200: Medical instrument cap

Claims (6)

  1. 　医療器具用キャップにおいて、
    　外部部材に接続可能に形成された本体部を備え、
    　前記本体部は、前記外部部材に流体的に接続されるための基端部から反対側の先端部まで貫通する流路が形成されており、
    　前記流路は、流体が前記先端部から前記基端部へ向かって流れることを防止するための逆止弁が設けられたことを特徴とする、医療器具用キャップ。     In a cap for a medical instrument,
    A main body portion formed to be connectable to an external member,
    The main body has a flow path formed therethrough from a base end to a tip end on the opposite side for fluidly connecting to the external member,
    A cap for a medical instrument, wherein the flow path is provided with a check valve for preventing fluid from flowing from the distal end portion toward the proximal end portion.
  2. 　請求項１に記載の医療器具用キャップにおいて、前記逆止弁は、弾性体で形成されたことを特徴とする、医療器具用キャップ。 The medical instrument cap according to claim 1, characterized in that the check valve is made of an elastic material.
  3. 　請求項２に記載の医療器具用キャップにおいて、前記逆止弁は、対向する一対のシート状部材で形成されたことを特徴とする、医療器具用キャップ。 The medical instrument cap according to claim 2, characterized in that the check valve is formed from a pair of opposing sheet-like members.
  4. 　請求項３に記載の医療器具用キャップにおいて、一対の前記シート状部材の各々は、一端が前記流路の内周面に固定されるとともに、他端が前記一端に比べて前記先端部の近くに位置しており、一対の前記シート状部材は前記他端で互いに対して当接していることを特徴とする、医療器具用キャップ。 The medical instrument cap according to claim 3, wherein each of the pair of sheet-like members has one end fixed to the inner circumferential surface of the flow channel and the other end located closer to the tip than the one end, and the pair of sheet-like members abut against each other at the other end.
  5. 　請求項４に記載の医療器具用キャップにおいて、一対の前記シート状部材の各々は、前記他端が前記流路の断面の略中心に位置していることを特徴とする、医療器具用キャップ。 The medical instrument cap according to claim 4, wherein the other end of each of the pair of sheet-like members is located approximately at the center of the cross section of the flow path.
  6. 　請求項５に記載の医療器具用キャップにおいて、前記シート状部材は、前記他端に近い部分ほど、前記流路が延在する方向に対する傾きが小さくなるように湾曲していることを特徴とする、医療器具用キャップ。
          6. The medical instrument cap according to claim 5, wherein the sheet-like member is curved such that the inclination of the portion of the sheet-like member with respect to the direction in which the flow channel extends becomes smaller the closer the portion of the sheet-like member is to the other end.
PCT/JP2023/046153 2022-12-28 2023-12-22 Medical instrument cap WO2024143200A1 (en)

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JP2022-211547 2022-12-28
JP2022211547 2022-12-28

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61192991A (en) * 1985-01-08 1986-08-27 アストラ・テック・アクチエボラーグ Connector with valve
JPH09206370A (en) * 1995-12-01 1997-08-12 Tsukada Medical Res:Kk Cap for human body indwelling medical device
US20210378857A1 (en) * 2018-10-26 2021-12-09 Singsilver Health Pte. Ltd. Flow stopper preventing backflow of urine
US20220296141A1 (en) * 2019-12-06 2022-09-22 Patient Inventions, Llc Fluid collection systems and methods and collecting fluids

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61192991A (en) * 1985-01-08 1986-08-27 アストラ・テック・アクチエボラーグ Connector with valve
JPH09206370A (en) * 1995-12-01 1997-08-12 Tsukada Medical Res:Kk Cap for human body indwelling medical device
US20210378857A1 (en) * 2018-10-26 2021-12-09 Singsilver Health Pte. Ltd. Flow stopper preventing backflow of urine
US20220296141A1 (en) * 2019-12-06 2022-09-22 Patient Inventions, Llc Fluid collection systems and methods and collecting fluids

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