WO2010029853A1 - Élément de connexion, ensemble d'alimentation entérale et tube de rallonge pour alimentation entérale - Google Patents

Élément de connexion, ensemble d'alimentation entérale et tube de rallonge pour alimentation entérale Download PDF

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Publication number
WO2010029853A1
WO2010029853A1 PCT/JP2009/064922 JP2009064922W WO2010029853A1 WO 2010029853 A1 WO2010029853 A1 WO 2010029853A1 JP 2009064922 W JP2009064922 W JP 2009064922W WO 2010029853 A1 WO2010029853 A1 WO 2010029853A1
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WO
WIPO (PCT)
Prior art keywords
male connector
central axis
lock part
connection member
contact portion
Prior art date
Application number
PCT/JP2009/064922
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English (en)
Japanese (ja)
Inventor
井藤尚継
上原康賢
Original Assignee
株式会社ジェイ・エム・エス
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 株式会社ジェイ・エム・エス filed Critical 株式会社ジェイ・エム・エス
Priority to JP2010528702A priority Critical patent/JP5218560B2/ja
Publication of WO2010029853A1 publication Critical patent/WO2010029853A1/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
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/10—Tube connectors; Tube couplings
    • A61M39/1011—Locking means for securing connection; Additional tamper safeties
    • 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
    • A61J15/00—Feeding-tubes for therapeutic purposes
    • A61J15/0026—Parts, details or accessories for feeding-tubes
    • 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
    • A61J15/00—Feeding-tubes for therapeutic purposes
    • A61J15/0015—Gastrostomy feeding-tubes

Definitions

  • the present invention relates to a connecting member for connecting a tube used for medical use, for example. Moreover, this invention relates to the enteral-nutrition administration set and enteral-nutrition extension tube provided with this connection member.
  • Enteral nutrition therapy is known as a method for administering a "liquid”.
  • a flexible tube (generally referred to as “enteral nutrition catheter”) is used to deliver a liquid to the patient's body.
  • enteral nutrition catheter As a tube used for enteral nutrition therapy, the tube is inserted into the stomach or duodenum through the patient's nasal cavity, depending on the tube insertion route, and into the stomach through the gastric fistula formed on the patient's abdomen.
  • a PEG (Percutaneous Endoscopic Gastrostomy) tube to be inserted, a PTEG (Percutaneus Trans Esophageal Gastro-tubing) tube to be inserted into the stomach through a hole formed in the base of the patient's neck, and the like are known.
  • the viscosity of the liquid used for enteral nutrition therapy is low, the liquid in the stomach may flow back into the esophagus and cause pneumonia, or the liquid may not be absorbed by the body and diarrhea may occur.
  • a liquid material whose viscosity has been increased by semi-solidifying or adding a thrombotic agent or a thickener is often used.
  • pressure may be applied to the liquid using a syringe or a device for compressing a container filled with the liquid.
  • a syringe or a device for compressing a container filled with the liquid there is a problem that the female connector of the tube inserted into the patient's body and the male connector inserted therein are disconnected due to the pressure applied to the liquid.
  • the problem of separation between the female connector and the male connector is not limited to the case where the liquid material described above is pumped, for example, when an external force is applied unintentionally to the connection portion between the female connector and the male connector. Also occurred.
  • Patent Document 1 describes a fastener for firmly connecting a female connector and a male connector of a flexible tube.
  • the fastener includes a substantially cylindrical outer member and an inner member, both of which have a substantially C-shaped cross section.
  • the inner member is inserted into the outer member.
  • the outer peripheral surface of the inner member is eccentric so that the radial thickness gradually increases in the circumferential direction, and the inner peripheral surface of the outer member is along this eccentric outer peripheral surface of the inner member.
  • An inner member and an outer member are sheathed on the outer peripheral surface of the female connector into which the male connector is inserted.
  • the outer member is tightened so as to reduce the diameter of the inner member.
  • the female connector is compressed in the radial direction by the male connector and the inner member, the female connector and the male connector can be firmly connected.
  • An object of the present invention is to provide a connecting member, an enteral nutrition administration set, and an enteral nutrition extension tube that can realize a strong connection between a tube (female connector) and a male connector with a small number of parts.
  • the connecting member of the present invention includes an insertion portion that is inserted into a tube at one end, a substantially cylindrical male connector having the other end as a base end portion, and a lock part that is penetrated by the male connector.
  • the male connector includes at least one first abutting portion whose distance from the central axis is relatively increased in a cross section perpendicular to the central axis on a part of the outer peripheral surface of the insertion portion.
  • the lock part includes at least one second abutting portion whose distance from the central axis is relatively reduced in a cross section perpendicular to the central axis on an inner peripheral surface facing the male connector.
  • Both the enteral nutrition administration set and enteral nutrition extension tube of the present invention are provided with the connecting member of the present invention at one end thereof.
  • the first contact portion of the male connector and the second contact portion of the lock part are pressed against the inner peripheral surface and the outer peripheral surface of the tube, respectively, so as to sandwich the tube.
  • a strong connection with the tube can be realized.
  • FIG. 1 is a perspective view of a male connector constituting a connection member according to Embodiment 1 of the present invention.
  • 2A is a front view of the male connector constituting the connection member according to Embodiment 1 of the present invention
  • FIG. 2B is a side view thereof viewed from the direction of arrow 2B in FIG. 2A
  • FIG. 2C is a view taken along line 2C-2C in FIG. It is arrow sectional drawing.
  • FIG. 3 is a perspective view of the lock parts constituting the connection member according to the first embodiment of the present invention.
  • 4A is a front view of the lock part constituting the connection member according to the first embodiment of the present invention
  • FIG. 4B is a side view thereof viewed from the direction of arrow 4B in FIG.
  • FIG. 4A is a front view showing a state immediately before connecting the connection member according to Embodiment 1 of the present invention and the upstream end of the PEG tube.
  • 6A is a cross-sectional view of the connection member according to Embodiment 1 of the present invention in which the lock part is in a lockable position with respect to the male connector
  • FIG. 6B is a view of the present invention in which the lock part is in the retracted position with respect to the male connector.
  • 3 is a cross-sectional view of a connection member according to Embodiment 1.
  • FIG. 7A is a front view showing a state before the male connector of the connection member according to Embodiment 1 of the present invention is inserted into the upstream end of the PEG tube and before locking, and FIG. 7B is from the direction of arrow 7B in FIG. 7A.
  • FIG. 8A is a cross-sectional view taken along line 8A-8A in FIG. 7B
  • FIG. 8B is a cross-sectional view taken along line 8B-8B in FIG. 7A
  • FIG. 8C is an arrow taken along line 8C-8C in FIG.
  • FIG. 9A is a front view showing a state in which the insertion portion of the male connector of the connection member according to Embodiment 1 of the present invention is inserted into the upstream end of the PEG tube and locked
  • FIG. 9B is a view from the direction of the arrow 9B in FIG. 9A.
  • FIG. 10A is a cross-sectional view taken along line 10A-10A in FIG. 9B
  • FIG. 10B is a cross-sectional view taken along line 10B-10B in FIG. 9A
  • FIG. 10C is an arrow taken along line 10C-10C in FIG.
  • FIG. 10A is a front view showing a state in which the insertion portion of the male connector of the connection member according to Embodiment 1 of the present invention is inserted into the upstream end of the PEG tube and locked
  • FIG. 9B is a view from the direction of the arrow 9B in FIG. 9A.
  • FIG. 10A is a cross-sectional view taken along line 10A-10A in FIG.
  • FIG. 11A is a front view showing a state in which the insertion part of the male connector of the connecting member according to Embodiment 1 of the present invention in which the lock part is moved to the retracted position is inserted into the upstream end of the PEG tube
  • FIG. 11B is FIG. It is the side view seen from the arrow 11B direction.
  • 12A is a cross-sectional view taken along line 12A-12A in FIG. 11B
  • FIG. 12B is a cross-sectional view taken along line 12B-12B in FIG. 11A.
  • FIG. 13A is a cross-sectional view of another connecting member according to Embodiment 1 of the present invention along a plane passing through the first contact portion and the second contact portion, similarly to FIG. 8C.
  • FIG. 8C is a cross-sectional view of another connecting member according to Embodiment 1 of the present invention along a plane passing through the first contact portion and the second contact portion, similarly to FIG. 8C.
  • FIG. 13B is a cross-sectional view of still another connection member according to Embodiment 1 of the present invention along a plane passing through the first contact portion and the second contact portion, similarly to FIG. 8C.
  • FIG. 13C is a cross-sectional view of still another connection member according to Embodiment 1 of the present invention along a plane passing through the first contact portion and the second contact portion, similarly to FIG. 8C.
  • FIG. 13D is a cross-sectional view of still another connection member according to Embodiment 1 of the present invention along a plane passing through the first contact portion and the second contact portion, similarly to FIG. 8C.
  • FIG. 13B is a cross-sectional view of still another connection member according to Embodiment 1 of the present invention along a plane passing through the first contact portion and the second contact portion, similarly to FIG. 8C.
  • FIG. 13C is a cross-sectional view of still another connection member according to Embodiment 1 of the present invention along a plane passing through the first contact portion and the second contact
  • FIG. 13E is a cross-sectional view of still another connection member according to Embodiment 1 of the present invention along a plane passing through the first contact portion and the second contact portion, similarly to FIG. 8C.
  • FIG. 14 is a perspective view of a male connector constituting a connection member according to Embodiment 2 of the present invention.
  • 15A is a front view of the male connector constituting the connection member according to Embodiment 2 of the present invention
  • FIG. 15B is a side view thereof as seen from the direction of the arrow 15B in FIG. 15A
  • FIG. 15C is a line 15C-15C in FIG.
  • FIG. 15D is a sectional view taken along the line 15D-15D in FIG. 15A.
  • FIG. 16 is a perspective view of the lock parts constituting the connection member according to the second embodiment of the present invention.
  • 17A is a front view of a lock part that constitutes a connecting member according to Embodiment 2 of the present invention
  • FIG. 17B is a side view thereof viewed from the direction of arrow 17B in FIG. 17A
  • FIG. 17C is viewed from the direction of arrow 17C in FIG.
  • the top view and FIG. 17D are the bottom views seen from the arrow 17D direction of FIG. 17A.
  • 18A is a cross-sectional view taken along line 18A-18A in FIG. 17A
  • FIG. 18B is a cross-sectional view taken along line 18B-18B in FIG. 17A.
  • FIG. 19 is a perspective view showing a state before the male connector of the connecting member according to the second embodiment of the present invention is inserted into the upstream end of the PEG tube and before locking.
  • 20A is a front view showing a state before the male connector of the connecting member according to the second embodiment of the present invention is inserted into the upstream end of the PEG tube and before locking
  • FIG. 20B is from the direction of the arrow 20B in FIG. 20A.
  • FIG. 21A is a cross-sectional view taken along line 21A-21A in FIG. 20B
  • FIG. 21B is a cross-sectional view taken along line 21B-21B in FIG. 20A.
  • 22A is a cross-sectional view taken along the line 22A-22A in FIG. 20A, and FIG.
  • FIG. 22B is a cross-sectional view taken along the line 22B-22B in FIG. 20A.
  • FIG. 23 is a perspective view showing a state where the insertion portion of the male connector of the connection member according to Embodiment 2 of the present invention is inserted into the upstream end of the PEG tube and locked.
  • 24A is a front view showing a state in which the insertion portion of the male connector of the connection member according to Embodiment 2 of the present invention is inserted into the upstream end of the PEG tube and locked
  • FIG. 24B is a view from the direction of the arrow 24B in FIG. 24A.
  • FIG. 25A is a cross-sectional view taken along line 25A-25A in FIG. 24B, and FIG.
  • 25B is a cross-sectional view taken along line 25B-25B in FIG. 24A.
  • 26A is a cross-sectional view taken along line 26A-26A in FIG. 24A, and
  • FIG. 26B is a cross-sectional view taken along line 26B-26B in FIG. 24A.
  • connection member of the present invention it is preferable that a cross-sectional shape of the outer peripheral surface of the male connector along a plane that passes through the first contact portion and is perpendicular to the central axis is substantially elliptical. Thereby, the design of the male connector can be simplified.
  • the cross-sectional shape of the inner peripheral surface of the lock part along the plane passing through the second contact portion and perpendicular to the central axis is also substantially elliptical.
  • At least one of the first contact portion and the second contact portion may be a protrusion.
  • the clamping pressure by the 1st contact part and 2nd contact part with respect to a tube can be raised, higher connection strength can be obtained.
  • whether or not the first contact portion (or the second contact portion) is a “projection” is determined based on whether the first contact portion (or the second contact portion) is a cross section perpendicular to the central axis. However, it is judged whether or not it is raised (projected) specifically with respect to its surroundings.
  • one of the first contact part and the second contact part is a projection, and the male connector in which the other is formed passing through the other and along a plane perpendicular to the central axis.
  • the cross-sectional shape of the outer peripheral surface or the inner peripheral surface of the lock part may be substantially elliptical.
  • a plurality of the first contact portions are arranged at equiangular intervals with respect to the central axis. Thereby, more stable connection strength can be obtained.
  • the same number of the second contact portions as the first contact portions are provided, and a plurality of the second contact portions are arranged at equiangular intervals with respect to the central axis.
  • the first contact portion may be provided at two or more positions different in the central axis direction.
  • the second contact portion may be provided in the central axis direction. You may be provided in two or more places from which a position differs. Thereby, connection strength can further be improved.
  • the positions around the central axis of the first contact portions provided at two or more different positions in the central axis direction are preferably different from each other.
  • the positions around the central axis of the second abutting portions provided at two or more different positions in the central axis direction are different from each other.
  • the lock part preferably has an annular shape surrounding the male connector. Therefore, since the strength of the lock parts is improved, a stable and higher connection strength can be obtained.
  • a movement restriction mechanism is provided between the lockable position and the retracted position to restrict the lock part from moving in the central axis direction with respect to the male connector. Accordingly, when the lock part is rotated with respect to the male connector at the lockable position, the lock part can be prevented from being displaced to the retracted position, so that the connection work is facilitated. Also, when connecting a thick tube that cannot be clamped between the first contact portion and the second contact portion, the lock parts can be locked if the lock parts are moved to the retracted position in advance. Therefore, the insertion portion of the male connector can be surely inserted deeply into the tube.
  • the tube into which the insertion portion of the male connector is inserted is sandwiched between the first contact portion and the second contact portion at the lockable position.
  • the connecting member of the present invention includes a substantially cylindrical male connector and a lock part penetrated by the male connector.
  • FIG. 1 is a perspective view of a male connector 100 constituting a connecting member according to Embodiment 1 of the present invention
  • FIG. 2A is a front view thereof
  • FIG. 2B is a side view thereof viewed from the direction of arrow 2B in FIG. 2A
  • FIG. FIG. 2B is a cross-sectional view taken along line 2C-2C of 2A.
  • the male connector 100 has a substantially hollow cylindrical shape as a whole in which a through hole 102 along the central axis 101 is formed.
  • One end of the male connector 100 is, for example, an insertion portion 103 to be inserted into the upstream end (female connector) of the PEG tube, and the other end constitutes an enteral nutrition administration set connected to a container filled with a liquid material.
  • a proximal end 104 connected to the downstream end of the tube. The liquid material flows in the through hole 102 from the base end portion 104 side toward the insertion portion 103 side.
  • a part of the outer peripheral surface of the insertion portion 103 is formed with a bamboo shoot shape portion 105 in which a plurality of tapered surfaces (conical surfaces) having a large outer diameter on the base end portion 104 side are repeatedly arranged in the direction of the central axis 101.
  • the bamboo shoot shape part 105 is an example, Comprising: A well-known shape may be formed as an insertion part of a male connector other than this.
  • the distance from the central axis 101 in the cross section perpendicular to the central axis 101 is another part of the outer peripheral surface of the insertion part 103, preferably at a position closer to the base end part 104 than the bamboo shoot shape part 105.
  • Two first abutting portions 130a and 130b are formed so as to increase as compared to FIG.
  • the cross-sectional shape of the outer peripheral surface of the male connector 100 that passes through the first contact portions 130a and 130b and is perpendicular to the central axis 101 is substantially elliptical (or oval). Shape or track-like track).
  • the two first contact portions 130a and 130b are disposed on the substantially elliptical long axis.
  • Two first abutment portions 130a, apex distance between 130b (major axis of the substantially elliptical shape) is D 13.
  • a first collar 141 and a second collar 142 projecting outward are provided on the proximal end 104 side of the first contact parts 130a and 130b.
  • the second collar 142 is located closer to the base end 104 than the first collar 141.
  • the outer peripheral edge of the first flange 141 is a circle having a diameter D 141 that is larger than the distance D 13 between the tops of the two first contact portions 130a, 130b.
  • the outer peripheral edge of the second flange 142 is a circle having a diameter D 142 that is larger than the outer diameter D 141 of the first flange 141.
  • a pair of locking projections 150 a and 150 b projecting outward is provided in a region between the first collar 141 and the second collar 142 and symmetrical with respect to the central axis 101.
  • a pair of plate-shaped gripping plates 121 a and 121 b are erected on the outer peripheral surface of the base end portion 104 along a plane including the central axis 101.
  • the gripping plates 121a and 121b are gripped when holding the male connector 100 or applying torque for rotating the male connector 100 around the central axis 101 to the male connector 100.
  • the outer peripheral surface of the base end portion 104 may be formed in various polygonal column surfaces, or an uneven pattern or the like may be provided on the outer peripheral surface.
  • First abutting portions 130a and 130b and locking protrusions 150a and 150b are provided on a virtual plane (not shown) including the grip plates 121a and 121b through the central axis 101. Accordingly, the user can insert the male connector 100 into the through hole 202 of the lock part 200 to be described later (see FIG. 5 to be described later) and the first contact portions 130a and 130b and the locking projections hidden by the lock part 200.
  • the positions of 150a and 150b around the central axis 101 can be recognized from the positions of the gripping plates 121a and 121b.
  • FIG. 3 is a perspective view of the lock part 200 constituting the connecting member according to Embodiment 1 of the present invention
  • FIG. 4A is a front view thereof
  • FIG. 4B is a side view thereof viewed from the direction of arrow 4B in FIG. 4A
  • FIG. 4A is a top view seen from the direction of arrow 4C of 4A
  • FIG. 4D is a bottom view seen from the direction of arrow 4D of FIG. 4A.
  • the lock part 200 includes a large diameter part 203 and a small diameter part 204 each having a substantially cylindrical shape.
  • the large diameter portion 203 has a larger inner diameter and outer diameter than the small diameter portion 204.
  • the large-diameter portion 203 and the small-diameter portion 204 are connected so that their central axes coincide with the central axis 201 of the lock part 200.
  • the lock part 200 is formed with a through hole 202 along the central axis 201.
  • the lock part of the present invention does not need to be divided into the large-diameter portion 203 and the small-diameter portion 204 as in the first embodiment, and has, for example, a substantially cylindrical shape having a single inner diameter and outer diameter. Also good.
  • Two second contact portions 230a and 230b are formed.
  • the second abutting portions 230a and 230b are arranged in the clockwise direction with respect to the top portions (portions closest to the central axis 201), and the inner peripheral surfaces of the large diameter portions 203 and the second abutting portions 230a and 230b.
  • the second contact portions 230 a and 230 b including the inclined surfaces 239 a and 239 b are symmetric with respect to the central axis 210.
  • the distance D 23 between the top portions of the two second contact portions 230 a and 230 b is larger than the distance D 13 between the top portions of the two first contact portions 130 a and 130 b of the male connector 100.
  • a pair of arc-shaped locking ribs 241 a and 241 b projecting toward the central axis 201 are provided on the inner peripheral surface which is a cylindrical surface of the small diameter portion 204 in the circumferential direction. It is extended along. In the circumferential direction, regions where the locking ribs 241a and 241b are not formed are referred to as moving paths 242a and 242b.
  • the locking ribs 241a and 241b and the movement paths 242a and 242b are symmetric with respect to the central axis 201.
  • the inner diameter D 24 of the small diameter portion 204 at 241b is substantially equal to the outer diameter D 141 of the first flange portion 141 of the male connector 100, the locking projection 150a, from the top distance D 15 of 150b Is smaller than the outer diameter D 142 of the second flange 142.
  • the inner diameter D 25 of the small diameter portion 204 in the movement paths 242a and 242b is larger than the distance D 15 between the top portions of the locking projections 150a and 150b.
  • a pair of plate-shaped gripping plates 221a and 221b are erected on the outer peripheral surface of the lock part 200 along a surface including the central axis 201.
  • the grip plates 221 a and 221 b are gripped when the lock part 200 is held or when torque for rotating the lock part 200 around the central axis 201 is applied to the lock part 200.
  • the outer peripheral surface of the lock part 200 may be formed in various polygonal column surfaces, or an uneven pattern may be provided on the outer peripheral surface.
  • the second contact portions 230a and 230b are provided on a virtual plane (not shown) including the grip plates 221a and 221b through the central axis 201.
  • a virtual plane (not shown) including the grip plates 221a and 221b through the central axis 201.
  • the user recognizes the positions around the central axis 201 of the second contact portions 230a and 230b that are difficult to see because they are formed on the inner peripheral surface of the large-diameter portion 203 from the positions of the grip plates 221a and 221b. can do.
  • the moving paths 242a and 242b are not provided on the virtual plane.
  • the male connector 100 and the lock part 200 can be manufactured by injection molding using a hard resin material such as polypropylene, polycarbonate, polyethylene, ABS resin, polyvinyl chloride, or the like.
  • a hard resin material such as polypropylene, polycarbonate, polyethylene, ABS resin, polyvinyl chloride, or the like.
  • the lock part 200 is inserted through the male connector 100 by inserting the insertion portion 103 of the male connector 100 from the opening on the small diameter portion 204 side of the through hole 202.
  • the male connector 100 is placed in the lock part 200 so that the locking ribs 241a and 241b of the lock part 200 are located closer to the base end part 104 than the first flange 141 of the male connector 100 (see FIG. 6A). Inserted.
  • the inner diameter D 24 of the locking ribs 241a and 241b is substantially the same as the outer diameter D 141 of the first flange 141, the locking ribs 241a and 241b can be inserted into the insertion portion by applying a slight force.
  • the locking ribs 241 a and 241 b of the lock part 200 are positioned on the insertion portion 103 side with respect to the locking protrusions 150 a and 150 b of the male connector 100. It can move in the direction of the central axis 101, 201 between the “lockable position” (FIG. 6A) and the “retracted position” (FIG. 6B) located on the base end 104 side. As described above, the inner diameter D 24 of the locking ribs 241 a and 241 b of the lock part 200 is smaller than the top distance D 15 of the locking protrusions 150 a and 150 b of the male connector 100.
  • the lock part 200 cannot move between the lockable position and the retracted position.
  • the locking ribs 241a and 241b of the lock part 200 are not continuous in the circumferential direction, but are divided by the moving paths 242a and 242b.
  • the lock part 200 is rotated around the central axes 101 and 201 with respect to the male connector 100, and the lock protrusions 150 a and 150 b of the male connector 100 and the movement paths 242 a and 242 b of the lock part 200 are rotated about the central axes 101 and 201.
  • the locking protrusions 150a and 150b pass through the movement paths 242a and 242b, so that the lock part 200 can be freely moved between the lockable position (FIG. 6A) and the retracted position (FIG. 6B). Can be moved to. That is, the locking protrusions 150a and 150b of the male connector 100 and the locking ribs 241a and 241b of the lock part 200 are a position where the lock part 200 can be locked with respect to the male connector 100 in the direction of the central axes 101 and 201 and a retracted position. It functions as a movement restriction mechanism that restricts movement between the two.
  • the locking ribs 241a and 241b of the lock part 200 are positioned between the first flange 141 of the male connector 100 and the locking protrusions 150a and 150b in the direction of the central axes 101 and 201. is doing. At this time, the positions of the first contact portions 130a and 130b of the male connector 100 in the direction of the central axes 101 and 201 overlap with the positions of the second contact portions 230a and 230b of the lock part 200 in the direction of the central axes 101 and 201.
  • the locking ribs 241a and 241b of the lock part 200 are positioned between the locking projections 150a and 150b of the male connector 100 and the second flange 142 in the direction of the central axes 101 and 201. ing. At this time, the second contact portions 230 a and 230 b of the lock part 200 are located closer to the proximal end portion 104 than the first flange portion 141 of the male connector 100 in the direction of the central axes 101 and 201.
  • a method for connecting the connecting member 1 of Embodiment 1 and the upstream end (female connector) of the flexible hollow PEG tube 90 will be described below.
  • the male connector 100 and the lock part 200 can take a posture such that their central axes 101 and 201 do not coincide with each other, but in the drawing, the central axis of the male connector 100 and the lock part 200 are simplified for the sake of simplicity.
  • Reference numeral 80 denotes a flexible hollow tube provided on the downstream side of an enteral nutrition administration set for conveying a liquid substance to be administered to a patient.
  • the downstream end of the tube 80 is inserted into the through hole 102 of the male connector 100 from the base end 104 side and integrated with the male connector 100 by a method such as fusion (see FIGS. 6A and 6B).
  • the upstream end (not shown) of the enteral nutrition administration set is connected to a container filled with, for example, an enteral nutrient.
  • the configuration of the enteral nutrition administration set is not particularly limited, and may be, for example, any enteral nutrition administration set defined in JIS T3213 or any other known enteral nutrition administration set.
  • the enteral nutrition administration set may be provided with a pressurizing mechanism for pumping the liquid material flowing therethrough.
  • the lock part 200 is in a lockable position with respect to the male connector 100 (FIG. 6A). From this state, the male connector 100 is inserted into the PEG tube 90.
  • FIG. 7A is a front view showing a state where the insertion portion 103 of the male connector 100 of the connecting member 1 is inserted into the upstream end of the PEG tube 90
  • FIG. 7B is a side view seen from the direction of arrow 7B in FIG. 7A
  • 8A is a cross-sectional view taken along line 8A-8A in FIG. 7B
  • FIG. 8B is a cross-sectional view taken along line 8B-8B in FIG. 7A
  • FIG. 8C is a first abutting portion 130a of male connector 100
  • FIG. 8B is a cross-sectional view taken along line 8C-8C of FIG. 8A passing through 130b.
  • the male connector 100 is inserted into the PEG tube 90 so that the first contact portions 130 a and 130 b provided in the insertion portion 103 of the male connector 100 are covered with the PEG tube 90. .
  • the second contact portions 230 a and 230 b of the lock part 200 face the outer peripheral surface of the PEG tube 90.
  • the second contact portions 230a and 230b of the lock part 200 do not face the first contact portions 130a and 130b of the male connector 100.
  • the rotation position around the central axes 101 and 201 with respect to the male connector 100 of the lock part 200 is maintained. Furthermore, it is preferable that the rotation position around the central axes 101 and 201 with respect to the male connector 100 of the lock part 200 is maintained so that the lock part 200 in the lockable position does not move to the retracted position.
  • the lock part 200 is rotated around the central axes 101 and 201 with respect to the male connector 100 in the direction of the arrow 208 in FIG.
  • FIG. 9A is a front view showing a state in which the lock part 200 is rotated in the direction of an arrow 208 with respect to the male connector 100
  • FIG. 9B is a side view thereof as seen from the direction of the arrow 9B in FIG. 9A.
  • 10A is a cross-sectional view taken along line 10A-10A in FIG. 9B
  • FIG. 10B is a cross-sectional view taken along line 10B-10B in FIG. 9A
  • FIG. 10C is a first contact portion 130a of male connector 100
  • FIG. 10B is a cross-sectional view taken along line 10C-10C of FIG. 10A passing through 130b.
  • FIG. 10B illustration of the tube 80 inserted in the base end part 104 is abbreviate
  • 10A and 10C the internal structure of the valve 95 communicating with a balloon (not shown) provided at the downstream end of the PEG tube 90 is not shown.
  • the second contact parts 230 a and 230 b of the lock part 200 and the first contact parts 130 a and 130 b of the male connector 100 are used.
  • the PEG tube 90 is compressed and sandwiched in the thickness direction by the second contact portions 230a and 230b and the first contact portions 130a and 130b.
  • the lock part 200 When the lock part 200 is rotated with respect to the male connector 100 in the direction of the arrow 208 in FIG. 8C, the locking protrusions 150a and 150b of the male connector 100 abut on the locking ribs 241a and 241b of the lock part 200, The lock part 200 is prevented from moving in the direction of the central axes 101 and 201 from the lockable position to the retracted position with respect to the male connector 100. Therefore, the lock part 200 is simply rotated with respect to the male connector 100 in the direction of the arrow 208 in FIG. 8C, that is, a force directed toward the PEG tube 90 along the central axes 101 and 201 is applied to the lock part 200.
  • the PEG tube 90 can be sandwiched between the second contact portions 230a and 230b and the first contact portions 130a and 130b. Therefore, regardless of the operator, the PEG tube 90 can always be stably held between the first contact portions 130a and 130b and the second contact portions 230a and 230b.
  • an operation reverse to the above may be performed. That is, the lock part 200 is rotated in the direction of the arrow 209 in FIG. 10C with respect to the male connector 100, and the PEG tube 90 is held between the first contact portions 130a and 130b and the second contact portions 230a and 230b (locked). Status). Next, the male connector 100 is pulled out from the PEG tube 90.
  • connection member 1 is configured so that the first contact portions 130 a and 130 b of the male connector 100 and the second contact portions 230 a and 230 b of the lock part 200 are connected to the inner peripheral surface and the outer periphery of the PEG tube 90. Since the PEG tube 90 is sandwiched by being pressed against the surfaces, the connection member 1 and the PEG tube 90 can be firmly connected. Therefore, even when a liquid material is pumped to the patient through the PEG tube 90, or when an external force is unintentionally applied to the connection portion between the connection member 1 and the PEG tube 90, the connection is made from the PEG tube 90. The member 1 does not come off.
  • the PEG tube 90 can be pinched / unpinned by the first contact portions 130a and 130b and the second contact portions 230a and 230b simply by rotating the lock part 200 with respect to the male connector 100. Therefore, the PEG tube 90 and the connection member 1 can be reconnected any number of times. Moreover, even if reconnection is repeated, the connection strength between the PEG tube 90 and the connection member 1 hardly changes.
  • the connecting member 1 of the first embodiment is composed of only two parts, the male connector 100 and the lock part 200, the number of parts is small, the assembly is easy, and the cost is low. Moreover, since the lock part 200 is penetrated by the male connector 100, the possibility of losing the part is low.
  • the top portions of the second contact portions 230a and 230b of the lock part 200 and the top portions of the first contact portions 130a and 130b of the male connector 100 are substantially opposed in the radial direction.
  • the lock part 200 was rotated relative to the male connector 100.
  • the first contact portion 130a, a top distance D 13 of the 130b and the second contact portion 230a when the thickness of the PEG tube 90 is thick in such relative difference between the top distance D 23 of the 230b, first The PEG tube 90 may be sandwiched between a location other than the top of the contact portions 130a and 130b and a location other than the top of the second contact portions 230a and 230b.
  • first contact portion and / or the second contact portion is formed with an inclined surface (in the first embodiment, corresponding to the inclined surfaces 239a and 239b) that extends gently in the circumferential direction from this top portion, Since at least a part of the inclined surface can be pressed against the PEG tube 90, the range of dimensions of the PEG tube 90 that can provide a desired connection strength can be expanded.
  • the PEG tube 90 collides with the second abutting portions 230a and 230b of the lock part 200 as can be easily understood from FIG. Until the first contact portions 130 a and 130 b are covered with the PEG tube 90, the insertion portion 103 of the male connector 100 cannot be inserted deeply into the PEG tube 90. In this case, of course, the PEG tube 90 cannot be sandwiched between the first contact portions 130a and 130b and the second contact portions 230a and 230b as described above. In addition, since only a part of the distal end side of the insertion portion 103 of the male connector 100 can be inserted into the PEG tube 90, the male connector 100 is easily detached from the PEG tube 90.
  • connection member 1 of the first embodiment the male connector 100 is inserted into the thick PEG tube 90 in a state where the lock part 200 is moved to the retracted position (FIG. 6B).
  • FIG. 11A is a front view showing a state in which the lock part 200 is moved to the retracted position and the insertion portion 103 of the male connector 100 is inserted into the upstream end of the PEG tube 90, and FIG. 11B is seen from the direction of the arrow 11B in FIG. 11A. It is the side view. 12A is a cross-sectional view taken along line 12A-12A in FIG. 11B, and FIG. 12B is a cross-sectional view taken along line 12B-12B in FIG. 11A.
  • illustration of the tube 80 inserted in the base end part 104 is abbreviate
  • the internal structure of the valve 95 communicating with a balloon (not shown) provided at the downstream end of the PEG tube 90 is not shown.
  • the second contact portions 230 a and 230 b of the lock part 200 are more than the first flange 141 of the male connector 100 in the direction of the central axes 101 and 201. It is located on the base end 104 side. Therefore, the insertion portion 103 of the male connector 100 can be inserted deeply into the PEG tube 90 so that the first contact portions 130 a and 130 b of the male connector 100 are covered with the PEG tube 90.
  • the PEG tube 90 cannot be sandwiched between the first contact portions 130a and 130b and the second contact portions 230a and 230b as described above.
  • the male connector 100 includes the two first contact portions 130a and 130b
  • the lock part 200 includes the two second contact portions 230a and 230b.
  • the number of first contact portions and the number of second contact portions included in the lock part 200 are not limited to two, and may be one or three or more.
  • the male connector 100 includes three first contact portions 131a, 131b, and 131c on its outer peripheral surface
  • the lock part 200 includes three second contact portions 231a, 231b, and 231c on its inner peripheral surface. An example is shown.
  • the male connector 100 includes four first contact portions 132a, 132b, 132c, and 132d on the outer peripheral surface thereof, and the lock part 200 includes four second contact portions 232a, 232b, and 232c on the inner peripheral surface thereof. , 232d is shown. 13C, the male connector 100 includes four first contact portions 133a, 133b, 133c, and 133d on its outer peripheral surface, and the lock part 200 has four second contact portions 233a, 233b, and 233c on its inner peripheral surface. , 233d.
  • the number of first contact portions and the number of second contact portions may be the same or different. However, it is preferable that one of the number of the first contact portions and the number of the second contact portions is a multiple of the other, and it is more preferable that both are the same number.
  • two or more first contact portions are arranged at equal angular intervals with respect to the central axis 101 in the male connector 100, and the same number of second contact portions as the first contact portions of the male connector 100 are provided in the lock part 200.
  • the first outer peripheral surface of the male connector 100 is provided.
  • the cross-sectional shape passing through the contact portions 130a and 130b was substantially elliptical (FIG. 8C)
  • the cross-sectional shape passing through the second contact portions 234a and 234b on the inner peripheral surface of the lock part 200 was substantially elliptical as shown in FIG. 13D.
  • 134 a and 134 b indicate two first contact portions formed on the outer peripheral surface of the male connector 100.
  • both the cross-sectional shape passing through the first contact portions 135a and 135b on the outer peripheral surface of the male connector 100 and the cross-sectional shape passing through the second contact portions 235a and 235b on the inner peripheral surface of the lock part 200 May be substantially oval (or oval or track-like track).
  • the first abutting portion provided on the outer peripheral surface of the insertion portion 103 of the male connector 100 is relatively longer in distance from the central axis 101 than in other portions in a cross section perpendicular to the central axis 101.
  • the cross-sectional shape of the first contact portion along the plane perpendicular to the central axis 101 is not particularly limited.
  • the second contact portion provided on the inner peripheral surface of the lock part 200 only needs to have a relatively smaller distance from the central axis 201 than the other portions in a cross section perpendicular to the central axis 201.
  • the cross-sectional shape of the second contact portion along the plane perpendicular to the central axis 201 is not particularly limited.
  • the first contact portion and / or the second contact portion may be a protrusion whose cross-sectional shape is a substantially arc shape, a substantially triangular shape, a substantially trapezoidal shape, or the like.
  • the male connector 100 shown in FIGS. 13B, 13C, and 13D includes a first contact portion that is a protrusion whose cross-sectional shape is raised in a substantially arc shape.
  • Each of the lock parts 200 in FIGS. 13A and 13B includes a second contact portion that is a protrusion whose cross-sectional shape is raised in a substantially arc shape.
  • the cross-sectional shape of the outer peripheral surface of the male connector 100 and / or the cross-sectional shape of the inner peripheral surface of the lock part 200 may be approximately elliptical, approximately oval, or approximately polygonal (approximately triangular, approximately square, etc.)
  • One contact portion or a second contact portion can also be formed.
  • the outer peripheral surface of the male connector 100 of FIG. 8C and FIG. 13E has a substantially elliptical cross-sectional shape, and includes two first contact portions on the major axis.
  • the outer peripheral surface of the male connector 100 of FIG. 13A has a substantially equilateral triangular cross-sectional shape, and its three apexes function as first contact portions.
  • FIGS. 13C and 13E has a substantially square cross-sectional shape, and the central part of the four sides and the vicinity thereof function as the second contact part.
  • the inner peripheral surface of the lock part 200 in FIGS. 13D and 13E has a substantially elliptical cross-sectional shape, and two portions on the short axis and the vicinity thereof function as a second contact portion.
  • the first contact portion and the second contact portion of the present invention center the outer peripheral surface of the male connector 100 and the inner peripheral surface of the lock part 200 in a cross section perpendicular to the central axis. It can be formed by making it non-circular in which the distance from the axis is not constant in the circumferential direction.
  • the second contact portion can also be formed on a flat surface (see FIG. 13C) or a concave surface (FIGS. 13D and 13E). That is, with respect to the male connector, the male connector can be changed so that the gap between the outer peripheral surface of the male connector and the inner peripheral surface of the lock part is changed by rotating the lock part penetrating the male connector around the central axis.
  • the outer peripheral surface and the inner peripheral surface of the lock part opposite to the outer peripheral surface may be formed.
  • the first contact portion and the second contact portion are the portions on the outer peripheral surface of the male connector that are in contact with the inner peripheral surface and the outer peripheral surface of the PEG tube and sandwich the PEG tube therebetween, and the lock.
  • the part on the inner peripheral surface of the part For example, if the thickness of the PEG tube changes, the portion on the outer peripheral surface of the male connector that holds the PEG tube and the portion on the inner peripheral surface of the lock part may slightly change. Therefore, the first contact portion and the second contact portion of the present invention should be understood as not having a point but a region having a certain area.
  • the cross-sectional shape of the outer peripheral surface of the lock part 200 can be arbitrarily set regardless of the cross-sectional shape of the inner peripheral surface.
  • the cross-sectional shape of the outer peripheral surface of the lock part 200 may be substantially circular.
  • the lock part has an annular shape surrounding the male connector.
  • the present invention is not limited to this, and for example, approximately C in which slits connecting both ends in the central axis direction are formed. It may have a letter shape.
  • the PEG tube can be held with a large force when the ring shape is as in the first embodiment, a stable and high connection strength can be obtained.
  • the lock part 200 is movable in the direction of the central axes 101 and 201 between the lockable position and the retracted position.
  • the lock part 200 may be configured not to move to the retracted position.
  • the number of locking protrusions provided on the male connector 100 and the number of moving paths of the lock parts 200 through which the male connector 100 passes are not limited to two as in the first embodiment. Set the number of locking projections and the number of movement paths so that the number of first contact portions provided on the male connector 100 and / or the number of second contact portions provided on the lock part 200 are the same. Also good.
  • the first collar 141 and / or the second collar 142 provided on the male connector 100 may not be continuous in the circumferential direction.
  • the first flange 141 and / or the second flange 142 can be omitted.
  • connection member 2 which concerns on Embodiment 2 of this invention is demonstrated.
  • symbol is attached
  • the connection member 2 according to the second embodiment will be described with a focus on differences from the connection member 1 according to the first embodiment.
  • FIG. 14 is a perspective view of a male connector 300 constituting a connection member according to Embodiment 2 of the present invention
  • FIG. 15A is a front view thereof
  • FIG. 15B is a side view thereof viewed from the direction of arrow 15B in FIG. 15A
  • FIG. 15A is a cross-sectional view taken along line 15C-15C
  • FIG. 15D is a cross-sectional view taken along line 15D-15D in FIG. 15A.
  • the base end portion 104 side is referred to as “upper side” and the insertion portion 103 side is referred to as “lower side”.
  • the male connector 300 has two first upper contact portions as first contact portions on the outer peripheral surface of the insertion portion 103, preferably at a position closer to the base end portion 104 side than the bamboo shoot shape portion 105.
  • Portions 331a and 331b and two first lower contact portions 332a and 332b are formed.
  • the first upper contact portions 331a and 331b and the first lower contact portions 332a and 332b are central axes in a cross section perpendicular to the central axis 101, like the first contact portions 130a and 130b of the first embodiment. It swells so that the distance from 101 increases compared with other parts.
  • the first upper contact portions 331a and 331b are provided closer to the base end portion 104 (upper side) than the first lower contact portions 332a and 332b.
  • the cross-sectional shape of the outer peripheral surface of the male connector 100 that passes through the first upper contact portions 331a and 331b and is perpendicular to the central axis 101 is substantially elliptical (or long). Circular or track-like track).
  • the first upper contact portions 331a and 331b are arranged on the long axis of the substantially elliptical shape.
  • the distance between the tops of the two first upper contact portions 331a, 331b (the major axis of the substantially elliptical shape) is D331 .
  • the cross-sectional shape of the outer peripheral surface of the male connector 100 along the plane that passes through the first lower contact portions 332a and 332b and is perpendicular to the central axis 101 is substantially elliptical (or Oval or track-like track).
  • the first lower contact portions 332a and 332b are disposed on the substantially elliptical long axis.
  • the distance between the tops of the two first lower contact portions 332a, 332b (the major axis of the substantially elliptical shape) is D332 .
  • the substantially elliptical minor axis D 333 passing through the first lower contact portions 332a and 332b is substantially the same as the distance D 331 between the top portions of the first upper contact portions 331a and 331b.
  • the positions of the first upper abutting portions 331a and 331b and the first lower abutting portions 332a and 332b around the central axis 101 are different. Specifically, when viewed along the central axis 101, a straight line connecting the first upper contact portion 331a and the first upper contact portion 331b, the first lower contact portion 332a, and the first lower contact It is orthogonal to the straight line connecting the contact portion 332b.
  • a first flange 141 projecting outward is provided on the proximal end 104 side of the first upper contact portions 331a and 331b.
  • the diameter D 141 of the outer peripheral edge of the first flange 141 is larger than the distance D 331 between the tops of the first upper contact parts 331a and 331b and the distance D 332 between the tops of the first lower contact parts 332a and 332b. .
  • FIG. 16 is a perspective view of a lock part 400 constituting a connection member according to Embodiment 2 of the present invention
  • FIG. 17A is a front view thereof
  • FIG. 17B is a side view thereof viewed from the direction of arrow 17B in FIG. 17A
  • FIG. 17A is a top view thereof viewed from the direction of arrow 17C of 17A
  • FIG. 17D is a bottom view thereof viewed from the direction of arrow 17D of FIG. 17A.
  • the lock part 400 includes a small diameter portion 204, a medium diameter portion 401, and a large diameter portion 402 in this order along the central axis 201 thereof.
  • the small diameter portion 204 side is referred to as “upper side” and the large diameter portion 402 side is referred to as “lower side”.
  • FIG. 18A is a cross-sectional view taken along line 18A-18A in FIG. 17A passing through the medium diameter portion 401
  • FIG. 18B is a cross-sectional view taken along line 18B-18B in FIG. 17A passing through the large diameter portion 402.
  • the cross-sectional shape of the inner peripheral surface of the middle diameter portion 401 that passes through the middle diameter portion 401 and is perpendicular to the central axis 201 is substantially elliptical (or oval or Track and track).
  • Two second upper abutting portions 431a and 431b whose distance from the central axis 201 is reduced compared to other portions are formed on the substantially elliptical short axis.
  • the distance between the tops of the second upper contact parts 431a and 431b (the substantially elliptical minor axis) D 431 is larger than the distance D 331 between the top parts of the first upper contact parts 331a and 331b of the male connector 300.
  • the cross-sectional shape of the inner peripheral surface of the large-diameter portion 402 passing through the large-diameter portion 402 and along a plane perpendicular to the central axis 201 is substantially elliptical (or oval-shaped or Track and track).
  • Two second lower abutting portions 432a and 432b whose distance from the central axis 201 is reduced as compared with other portions are formed on the substantially elliptical short axis.
  • the distance D 432 is substantially the same as the major axis direction diameter D 433 of the inner peripheral surface of the medium diameter portion 401.
  • the lock part 400 includes the second upper abutting portions 431a and 431b and the second lower abutting portions 432a and 432b having different positions in the central axis 201 direction as the second abutting portions.
  • the lock part 400 is penetrated by the male connector 300 by inserting the insertion part 103 of the male connector 300 from the opening on the small diameter part 204 side of the through hole 202.
  • the lock part 400 can move in the direction of the central axes 101 and 201 between the “lockable position” and the “retracted position” with respect to the male connector 300.
  • the positions of the first upper contact portions 331a and 331b of the male connector 300 in the direction of the central axes 101 and 201 and the positions of the second upper contact portions 431a and 431b of the lock part 400 in the direction of the central axes 101 and 201 are determined. Overlapping and central shaft 101, 201 direction position of the first lower contact portion 332a, 332b of the male connector 300 and central shaft 101, 201 direction position of the second lower contact portion 432a, 432b of the lock part 400 And overlap.
  • connection member 2 of the second embodiment and the upstream end (female connector) of the flexible hollow PEG tube 90 will be described below.
  • the male connector 300 is inserted into the PEG tube 90 in a state where the lock part 400 is disposed at a position where it can be locked with respect to the male connector 300.
  • FIG. 19 is a perspective view showing a state in which the insertion portion 103 of the male connector 300 of the connecting member 2 is inserted into the upstream end of the PEG tube 90
  • FIG. 20A is a front view thereof
  • FIG. 20B is a view from the direction of the arrow 20B in FIG.
  • FIG. 21A is a cross-sectional view taken along line 21A-21A in FIG. 20B
  • FIG. 21B is a cross-sectional view taken along line 21B-21B in FIG. 20A
  • FIG. 21C is an arrow taken along line 8C-8C in FIG.
  • FIG. 22A is a cross-sectional view taken along the line 22A-22A in FIG. 20A
  • 22B is a cross-sectional view taken along the line 22B-22B in FIG. 20A.
  • the tube 80 (see FIGS. 5, 6A, and 6B) inserted into the base end portion 104 is omitted for the sake of simplicity.
  • 21A and 22A the internal structure of the valve 95 communicating with a balloon (not shown) provided at the downstream end of the PEG tube 90 is not shown.
  • the male connector 100 is inserted into the PEG tube 90 so that the first upper contact portions 331a and 331b provided in the insertion portion 103 of the male connector 300 are covered with the PEG tube 90.
  • the second upper contact portions 431 a and 431 b and the second lower contact portions 432 a and 432 b of the lock part 400 face the outer peripheral surface of the PEG tube 90.
  • the second upper contact portions 431a and 431b of the lock part 400 face the first upper contact portions 331a and 331b of the male connector 300 as shown in FIG. 22A.
  • the lock part 400 is rotated around the central axes 101 and 201 with respect to the male connector 300 in the direction of the arrow 208 in FIGS. 22A and 22B.
  • FIG. 23 is a perspective view showing a state in which the lock part 400 is rotated in the direction of the arrow 208 with respect to the male connector 300
  • FIG. 24A is a front view thereof
  • FIG. 24B is a side view thereof seen from the direction of the arrow 24B in FIG.
  • 25A is a cross-sectional view taken along line 25A-25A in FIG. 24B
  • FIG. 25B is a cross-sectional view taken along line 25B-25B in FIG. 24A
  • FIG. 26A is an arrow taken along line 26A-26A in FIG. 26B is a cross-sectional view taken along the line 26B-26B in FIG. 24A.
  • the tube 80 see FIGS.
  • FIG. 25A and FIG. 26A the internal structure of the valve 95 communicating with a balloon (not shown) provided at the downstream end of the PEG tube 90 is omitted.
  • the second upper contact parts 431a and 431b of the lock part 400 and the first upper contact part 331a of the male connector 300 are obtained.
  • 331b substantially oppose each other in the radial direction, and the PEG tube 90 is compressed and sandwiched in the thickness direction by the second upper contact portions 431a, 431b and the first upper contact portions 331a, 331b.
  • the second lower contact portions 432a, 432b of the lock part 400 and the first lower side of the male connector 300 are substantially opposed to each other in the radial direction, and the PEG tube 90 is compressed and sandwiched in the thickness direction by the second lower contact portions 432a and 432b and the first lower contact portions 332a and 332b.
  • Second upper abutment portions 431a, 431b and second lower abutment portions 431a, 431b and second lower abutment portions 432a, 432b are generated by a compressive force applied to the PEG tube 90.
  • the frictional force between 432 a and 432 b and the PEG tube 90 prevents the lock part 400 from rotating in the direction of the arrow 209 in FIGS. 26A and 26B with respect to the male connector 300. Therefore, the pinched state (locked state) of the PEG tube 90 by the male connector 300 and the lock part 400 shown in FIGS. 25A, 25B, 26A, and 26B cannot be released by a slight external force or vibration.
  • an operation reverse to the above may be performed. That is, the lock part 400 is rotated with respect to the male connector 300 in the direction of the arrow 209 in FIGS. 26A and 26B to release the pinched state (locked state) of the PEG tube 90 between the male connector 300 and the lock part 400. Next, the male connector 300 is pulled out from the PEG tube 90.
  • connection member 2 of the second embodiment holds the PEG tube 90 by pressing the male connector 300 and the lock part 400 to the inner peripheral surface and the outer peripheral surface of the PEG tube 90, respectively.
  • the connection member 2 of the second embodiment holds the PEG tube 90 by pressing the male connector 300 and the lock part 400 to the inner peripheral surface and the outer peripheral surface of the PEG tube 90, respectively.
  • the PEG tube 90 is clamped at the lower clamping position between the 332b and the second lower abutting portions 432a and 432b.
  • connection member 2 and the PEG tube 90 can be more firmly connected in the second embodiment than in the first embodiment in which the clamping position in the direction of the central axes 101 and 201 is one. Therefore, even when a liquid substance is pumped to the patient through the PEG tube 90, or when an external force is unintentionally applied to the connection portion between the connection member 2 and the PEG tube 90, the connection is made from the PEG tube 90. The member 2 does not come off.
  • the upper holding position where the first upper contact parts 331a and 331b and the second upper contact parts 431a and 431b shown in FIG. 26A hold the PEG tube 90.
  • the upper holding position where the first lower contact parts 332a and 332b and the second lower contact parts 432a and 432b shown in FIG. 26B hold the PEG tube 90 is around the central axes 101 and 201.
  • the position is about 90 degrees different. That is, when viewed along the central axes 101 and 201, the connecting member 1 of the first embodiment clamps the PEG tube 90 at two locations around the central axes 101 and 201, whereas the connecting member of the second embodiment.
  • the distance D 331 between the top portions of the first upper contact portions 331a and 331b is a substantially elliptical short diameter passing through the first lower contact portions 332a and 332b. If it is the same as D 333 (see FIG. 15D), as shown in FIG. 26B, the male connector 300 is located at the position in the direction of the central axes 101, 201 where the first lower contact portions 332a, 332b are formed. Since the PEG tube 90 and the PEG tube 90 are easily in close contact with each other, liquid leakage is further reduced.
  • each of the first contact portion and the second contact portion is installed at two places where the positions in the central axes 101 and 201 directions are different, but three places where the positions in the central axes 101 and 201 directions are different. You may install in the above.
  • the second embodiment is the same as the first embodiment except for the above, and has the same effect as described in the first embodiment. Also in the second embodiment, as described in the first embodiment, the male connector 300 can be inserted into the thick PEG tube 90 with the lock part 300 moved to the retracted position. Furthermore, various changes described in the first embodiment can be applied to the second embodiment.
  • connection member of the present invention is provided at the downstream end of the tube constituting the enteral nutrition administration set, but the present invention is not limited to this.
  • a flexible hollow tube that constitutes an enteral feeding extension tube used in connection with an enteral feeding set and an enteral feeding catheter to extend the line It can also be provided.
  • an enteral-nutrition extension tube There is no restriction
  • regulated by JIST3264 and other well-known enteral-nutrition extension tubes may be sufficient.
  • connection member and the enteral nutrition extension tube are connected by connecting the downstream end of the tube constituting the enteral nutrition extension tube to the through hole 102 of the male connector 100 at the base end. It can be performed by inserting from the 104 side and integrating with the male connector 100 by a method such as fusion (see FIGS. 6A and 6B). Furthermore, the connection member of the present invention can be attached to one end of a hollow tube other than the enteral nutrition administration set or enteral nutrition extension tube.
  • connection member of the present invention is connected to the PEG tube.
  • the connection member of the present invention is an enteral nutrition such as a nasal tube or a PTEG tube other than the PEG tube. It can be applied to various tubes (enteral feeding catheters) used for therapy, medical tubes used other than enteral feeding therapy, and tubes used for purposes other than medical use.
  • the application field of the present invention is not particularly limited, and can be widely used in various fields such as medicine, food, and chemistry where a hollow tube needs to be connected.
  • Nutritional set tube 90 PEG tube 100, 300 Male connector 101 Male connector central axis 102 Through hole 103 Insertion portion 104 Base end portion 105 bamboo-pitch-shaped portion 121a, 121b Grip plate 130a, 130b First contact Part 331a, 331b first upper contact part (first contact part) 332a, 332b first lower contact portion (first contact portion) 141 First collar 142 Second collar 150a, 150b Locking protrusion 200, 400 Lock part 201 Center axis 203 of lock part Large diameter part 204 Small diameter part 202 Through hole 221a, 221b Grip plate 230a, 230b Second contact part 431a, 431b Second upper contact portion (second contact portion) 432a, 432b Second lower contact portion (second contact portion) 239a, 239b Inclined surfaces 241a, 241b Locking ribs 242a, 242b

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Abstract

L'invention concerne un connecteur mâle sensiblement tubulaire (100) présentant, à une extrémité, une partie d'insertion (103) à insérer dans un tube et, à l'autre extrémité, une partie d'extrémité proximale (104) qui pénètre dans une partie de blocage (200). Le connecteur mâle présente, sur une partie de la surface circonférentielle extérieure de la partie d'insertion (103), au moins une première partie de butée (130a, 130b) dont la distance avec l'axe centrale augmente relativement dans une section transversale perpendiculaire audit axe centrale. La partie de blocage présente, sur la surface circonférentielle intérieure opposée au connecteur mâle, au moins une seconde partie de butée (230a, 230b) dont la distance avec l'axe centrale diminue relativement dans une section transversale perpendiculaire à l'axe centrale. Ainsi, un connecteur femelle et un connecteur mâle peuvent être solidement connectés ensemble à l'aide d'un petit nombre d'éléments.
PCT/JP2009/064922 2008-09-09 2009-08-27 Élément de connexion, ensemble d'alimentation entérale et tube de rallonge pour alimentation entérale WO2010029853A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2010528702A JP5218560B2 (ja) 2008-09-09 2009-08-27 接続部材及び経腸栄養投与セット並びに経腸栄養延長チューブ

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008-231041 2008-09-09
JP2008231041 2008-09-09

Publications (1)

Publication Number Publication Date
WO2010029853A1 true WO2010029853A1 (fr) 2010-03-18

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PCT/JP2009/064922 WO2010029853A1 (fr) 2008-09-09 2009-08-27 Élément de connexion, ensemble d'alimentation entérale et tube de rallonge pour alimentation entérale

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US8449528B2 (en) 2010-07-30 2013-05-28 Kimberly-Clark Worldwide Inc. Enteral feeding extension set connector
US9364652B2 (en) 2012-11-30 2016-06-14 Avent, Inc. Medical connector with lift tabs
WO2016100617A1 (fr) * 2014-12-19 2016-06-23 Covidien Lp Système, appareil et procédé utilisés avec des systèmes entéraux
US9381338B2 (en) 2012-11-30 2016-07-05 Avent, Inc. Medical connector with a reversibly deformable lobe
US20160354594A1 (en) * 2013-12-11 2016-12-08 Jms Co., Ltd. Male connector
USD861161S1 (en) 2017-06-22 2019-09-24 Kpr U.S., Llc Connector
WO2023018710A1 (fr) * 2021-08-09 2023-02-16 Ilc Dover Lp Orifice comprenant un raccord cannelé et un corps elliptique
US11674614B2 (en) 2020-10-09 2023-06-13 Icu Medical, Inc. Fluid transfer device and method of use for same

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JPH03159655A (ja) * 1989-11-20 1991-07-09 Kawasumi Lab Inc 医療用具
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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8449528B2 (en) 2010-07-30 2013-05-28 Kimberly-Clark Worldwide Inc. Enteral feeding extension set connector
US10327997B2 (en) 2010-07-30 2019-06-25 Avent, Inc. Enteral feeding extension set connector
US9585814B2 (en) 2010-07-30 2017-03-07 Avent, Inc. Enteral feeding extension set connector
US9381338B2 (en) 2012-11-30 2016-07-05 Avent, Inc. Medical connector with a reversibly deformable lobe
US9364652B2 (en) 2012-11-30 2016-06-14 Avent, Inc. Medical connector with lift tabs
US20160354594A1 (en) * 2013-12-11 2016-12-08 Jms Co., Ltd. Male connector
US10646705B2 (en) * 2013-12-11 2020-05-12 Jms Co., Ltd. Male connector
WO2016100617A1 (fr) * 2014-12-19 2016-06-23 Covidien Lp Système, appareil et procédé utilisés avec des systèmes entéraux
US10532007B2 (en) 2014-12-19 2020-01-14 Kpr U.S., Llc System, apparatus and method employed with enteral systems
EP3858419A1 (fr) * 2014-12-19 2021-08-04 Covidien LP Système, appareil et procédé utilisés avec des systèmes entéraux
AU2020220171B2 (en) * 2014-12-19 2022-03-17 Covidien Lp System, apparatus and method employed with enteral systems
US11433001B2 (en) 2014-12-19 2022-09-06 Kpr U.S., Llc System, apparatus and method employed with enteral systems
USD861161S1 (en) 2017-06-22 2019-09-24 Kpr U.S., Llc Connector
US11674614B2 (en) 2020-10-09 2023-06-13 Icu Medical, Inc. Fluid transfer device and method of use for same
WO2023018710A1 (fr) * 2021-08-09 2023-02-16 Ilc Dover Lp Orifice comprenant un raccord cannelé et un corps elliptique

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