WO2013180234A1 - Dispositif d'aiguille à demeure - Google Patents

Dispositif d'aiguille à demeure Download PDF

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Publication number
WO2013180234A1
WO2013180234A1 PCT/JP2013/065082 JP2013065082W WO2013180234A1 WO 2013180234 A1 WO2013180234 A1 WO 2013180234A1 JP 2013065082 W JP2013065082 W JP 2013065082W WO 2013180234 A1 WO2013180234 A1 WO 2013180234A1
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WO
WIPO (PCT)
Prior art keywords
shield
needle
unit
hub
inner hub
Prior art date
Application number
PCT/JP2013/065082
Other languages
English (en)
Japanese (ja)
Inventor
藤井亮至
植松雷太
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
Publication of WO2013180234A1 publication Critical patent/WO2013180234A1/fr

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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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06—Body-piercing guide needles or the like
    • A61M25/0612—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
    • A61M25/0631—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders having means for fully covering the needle after its withdrawal, e.g. needle being withdrawn inside the handle or a cover being advanced over the needle
    • 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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06—Body-piercing guide needles or the like
    • A61M25/0606—"Over-the-needle" catheter assemblies, e.g. I.V. catheters

Definitions

  • the present invention includes a soft outer needle and a hard inner needle, and can puncture a patient with the tip of the inner needle protruding from the tip of the outer needle, and then the inner needle can be retracted from the outer needle. It is related with the indwelling needle apparatus comprised as follows.
  • Indwelling needle devices are widely used for treatments such as infusion, blood transfusion, and extracorporeal blood circulation.
  • a metal needle is left in the blood vessel, the blood vessel may be damaged. Therefore, an indwelling needle device having a soft outer needle and a hard inner needle is known. With the tip of the inner needle protruding from the tip of the outer needle, the outer needle and the inner needle are punctured into the patient's blood vessel, and then the inner needle is retracted from the outer needle and only the outer needle is left in the patient. The indwelling soft outer needle is unlikely to damage the patient's blood vessels.
  • FIG. 7 is a perspective view of an example of such a conventional indwelling needle device 900 (see, for example, Patent Document 1) as viewed from above.
  • FIG. 8 is a conventional view along a vertical plane including line 8-8 in FIG. It is arrow sectional drawing of the indwelling needle apparatus 900.
  • FIG. 7 For convenience of explanation, the side where the patient is punctured (the left side of the paper surface of FIGS. 7 and 8) is called the “front side”, and the opposite side is called the “rear side”.
  • the indwelling needle device 900 includes a shield 920 including a shield cylinder 921 having a substantially cylindrical shape and an outer hub 925 fixed to one end (front end) thereof.
  • a soft outer needle 930 is fixed to the front end of the outer hub 925.
  • a pair of blades 929a and 929b are provided on the outer peripheral surface of the shield tube 921 near the outer hub 925 side end.
  • the wings 929a and 929b have flexibility and can swing up and down.
  • An inner hub 940 is inserted into the lumen of the shield 920.
  • a metal hard inner needle 950 is fixed to the front end of the inner hub 940, and one end of a flexible tube 960 is connected to the rear end of the inner hub 940.
  • the inner needle 950 and the tube 960 communicate with each other via a longitudinal passage 943 that penetrates the inner hub 940 in the front-rear direction.
  • the shield tube 921, the outer hub 925, the outer needle 930, and the wings 929a and 929b constitute an outer unit 901 of the indwelling needle device 900.
  • the inner hub 940, the inner needle 950, and the tube 960 constitute an inner unit 902 of the indwelling needle device 900.
  • the inner unit 902 is inserted into the outer unit 901 so as to be movable in the longitudinal direction of the shield 920 (that is, the front-rear direction).
  • the inner hub 940 is located on the front end side of the lumen of the shield 920, the inner needle 950 held by the inner hub 940 passes through the outer needle 930, and the tip of the inner needle 950 is the outer needle 930. It protrudes from the tip of the outside.
  • This position of the inner unit 902 relative to the outer unit 901 is referred to as an “initial position”.
  • FIG. 9 is a perspective view of the stopper 970.
  • An approximately semi-cylindrical insertion portion 972 and a pair of fixing portions 973 extend from the substantially semi-cylindrical base portion 971.
  • the insertion portion 972 is disposed between the pair of fixing portions 973 and these are parallel to each other.
  • the insertion portion 972 of the stopper 970 is inserted from the rear end of the shield tube 921.
  • the distal end of the insertion portion 972 collide with the rear end of the inner hub 940 and pushing the inner hub 940 forward, the inner unit 902 can be disposed at the initial position.
  • the indwelling needle device 900 is used as follows.
  • the inner needle 950 and the outer needle 930 are punctured into the patient's blood vessel while the inner unit 902 is held at the initial position (puncturing operation). It is necessary to prevent the inner needle 950 from being stored in the outer needle 930 due to the reaction force that the inner needle 950 receives from the patient during puncturing. For this reason, the puncturing operation needs to be performed while holding the stopper 970. Accordingly, the stopper 970 and the inner unit 902 are not displaced with respect to the outer unit 901, and the inner unit 902 is maintained at the initial position.
  • the stopper 970 is removed from the shield 920, and then the tube 960 is withdrawn from the shield 920 (retraction operation).
  • the stopper 970 may be removed from the shield 920 at the same time as the tube 960 is pulled out.
  • the inner unit 902 moves backward with respect to the outer unit 901, and the inner needle 950 is housed in the shield 920 as shown in FIG.
  • the indwelling needle device 900 is fixed to the patient using an adhesive tape or the like.
  • the indwelling needle device 900 is indwelled with only the soft outer needle 930 punctured by the patient.
  • the stopper 970 is used only to maintain the inner unit 902 at the initial position in the puncturing operation for puncturing the patient with the inner needle 950 and the outer needle 930.
  • the stopper 970 is removed from the shield 920 prior to or together with the backward operation for moving the inner unit 902 toward the backward position.
  • the stopper 970 by providing the stopper 970, the number of parts constituting the indwelling needle device 900 increases, and the cost of the indwelling needle device 900 increases.
  • the stopper 970 inserted into the shield 920 may fall out of the shield 920 due to vibration or the like during the transfer of the indwelling needle device 900.
  • An object of the present invention is to solve the problems of the above-described conventional indwelling needle device, to reduce the possibility of erroneous operation, to reduce the number of parts, and to provide an indwelling needle device in which a stopper does not fall out during transfer.
  • An indwelling needle device includes a shield having a lumen, an outer unit including a soft outer needle fixed to the front end of the shield, and an inner portion partially disposed in the lumen of the shield.
  • the inner hub includes an operation portion on a side opposite to the inner needle. When the inner unit is arranged at the initial position, the operation unit is located outside the shield.
  • the indwelling needle device of the present invention does not include an independent member corresponding to the stopper of the conventional indwelling needle device. If the operation unit located outside the shield is moved rearward with respect to the shield, the inner unit can be moved from the initial position to the retracted position. Therefore, the possibility of erroneous operation of forgetting to move the inner unit to the retracted position is reduced.
  • the indwelling needle device of the present invention does not include an independent member corresponding to the stopper of the conventional indwelling needle device, the number of parts constituting the indwelling needle device is reduced. This is advantageous for reducing the cost of the indwelling needle device.
  • the indwelling needle device of the present invention does not include an independent member corresponding to the stopper of the conventional indwelling needle device, the stopper does not fall off from the shield due to vibration during transfer.
  • FIG. 1 is a perspective view seen from above of an indwelling needle device according to an embodiment of the present invention in which an inner unit is in an initial position.
  • FIG. 2 is a cross-sectional view of the indwelling needle device according to the embodiment of the present invention along the vertical plane including line 2-2 in FIG.
  • FIG. 3A is a perspective view of an inner hub used in the indwelling needle device according to the embodiment of the present invention.
  • FIG. 3B is a cross-sectional view of the inner hub used in the indwelling needle device according to the embodiment of the present invention along the plane including the line 3B-3B in FIG. 3A.
  • FIG. 4 is a perspective view seen from above the indwelling needle device according to the embodiment of the present invention in which the inner unit is in the retracted position.
  • FIG. 5 is a cross-sectional view of the indwelling needle device according to the embodiment of the present invention along the vertical plane including line 5-5 in FIG.
  • FIG. 6 is a perspective view seen from above of the indwelling needle device according to the embodiment of the present invention, in which the inner unit is in the retracted position, the inner hub is divided by a notch, and the rear side portion is removed. is there.
  • FIG. 7 is a perspective view seen from above of a conventional indwelling needle device in which the inner unit is in the initial position.
  • FIG. 8 is a cross-sectional view of the conventional indwelling needle device taken along the vertical plane including line 8-8 in FIG.
  • FIG. 9 is a perspective view of a stopper used in the conventional indwelling needle device shown in FIG. 10 is a cross-sectional view of the conventional indwelling needle device shown in FIG. 7 along the same plane as FIG. 8, with the inner unit in the retracted position.
  • An indwelling needle device includes a shield having a lumen, an outer unit including a soft outer needle fixed to the front end of the shield, and an inner portion partially disposed in the lumen of the shield.
  • the inner hub includes an operation portion on a side opposite to the inner needle. When the inner unit is arranged at the initial position, the operation unit is located outside the shield.
  • the indwelling needle device of the present invention when the inner unit moves to the retracted position, at least a part of a portion of the inner hub located outside the shield is removed, including the operation portion. It is preferable that Thereby, it is possible to prevent a trouble that an unintended external force acts on a portion of the inner hub located outside the shield and the outer needle comes out of the patient.
  • a notch for facilitating the removal is formed in the inner hub. This is advantageous for facilitating the division of the inner hub.
  • FIG. 1 is a perspective view seen from above of an indwelling needle device 100 according to an embodiment of the present invention in which an inner unit is in an initial position.
  • an orthogonal coordinate system is set in which the longitudinal direction of the indwelling needle device 100 is the Z axis, the horizontal axis orthogonal to the Z axis, and the vertical axis are the X axis and Y axis, respectively.
  • the Y-axis arrow side (that is, the upper side in FIG. 1) is called “upper side”, and the opposite side is called “lower side”.
  • the “horizontal direction” and the “vertical direction” do not mean the directions when the indwelling needle device 100 is actually used.
  • FIG. 2 is a cross-sectional view of the indwelling needle device 100 taken along the vertical plane (YZ plane) including the line 2-2 in FIG.
  • the indwelling needle device 100 includes a shield 20.
  • the shield 20 includes a shield cylinder 21 and an outer hub 25 fixed to one end (front end) of the shield cylinder 21.
  • the shield cylinder 21 has a substantially cylindrical shape with a constant inner diameter.
  • a locking protrusion 22 that is continuous in the circumferential direction is formed on the inner peripheral surface of the shield tube 21 in the vicinity of the end (rear end) opposite to the outer hub 25.
  • the outer hub 25 has a substantially funnel shape, and a soft outer needle 30 is fixed to an end (front end) opposite to the shield tube 21.
  • the outer needle 30 has a substantially cylindrical shape.
  • the material of the shield tube 21 and the outer hub 25 is not particularly limited, but is preferably a hard material.
  • the shield cylinder 21 and the outer hub 25 be transparent or translucent because the liquid (chemical liquid or blood) in the inner cavity 24 of the shield 20 or the inner hub 40 can be seen through.
  • the material of the outer needle 30 is not particularly limited, but a soft material is preferable.
  • a fluorine resin such as polypropylene, polyurethane elastomer, polytetrafluoroethylene, or the like can be used.
  • the outer needle 30 is transparent or translucent because the liquid (chemical liquid or blood) in the lumen and the inner needle 50 can be seen through.
  • the outer hub 25 and the outer needle 30 may be integrally formed using the soft material described above.
  • Reference numerals 29a and 29b are wings extending substantially parallel to the X axis.
  • the wings 29 a and 29 b are provided on a substantially cylindrical fixing member 28.
  • the material of the blades 29a and 29b is not particularly limited, but a soft material is preferable.
  • polypropylene, vinyl chloride, polyethylene, olefin-based or polystyrene-based thermoplastic elastomers, and the like can be used.
  • the wings 29a and 29b may be formed integrally with the shield 20.
  • An inner hub 40 is inserted into the inner cavity 24 of the shield 20 so as to be movable in the longitudinal direction of the shield 20 (that is, the Z-axis direction).
  • FIG. 3A is a perspective view of the inner hub 40
  • FIG. 3B is a cross-sectional view of the inner hub 40 along the vertical plane (YZ plane) including the line 3B-3B in FIG. 3A.
  • the inner hub 40 of the present embodiment has a shape that approximates that the inner hub 940 (see FIG. 8) and the stopper 970 (see FIG. 9) of the conventional indwelling needle device 900 are integrated.
  • a portion of the inner hub 40 corresponding to the conventional inner hub 940 is referred to as an inner hub body 140.
  • the inner hub main body 140 has a front portion 41 having a conical outer surface at one end (front end) and a rear portion 42 having a cylindrical outer surface at the other end.
  • a longitudinal passage 43 passes through the inner hub main body 140 from the front portion 41 to the rear portion 42 along the central axis 140 a of the inner hub main body 140.
  • An annular groove 44 continuous in the circumferential direction is formed on the outer peripheral surface of the inner hub main body 140 between the front portion 41 and the rear portion 42.
  • a large diameter portion 45 and a small diameter portion 46 are formed in this order between the annular groove 44 and the front portion 41 from the annular groove 44 side.
  • the small diameter portion 46 is adjacent to the front portion 41, and the outer diameter of the small diameter portion 46 is substantially the same as the maximum diameter of the front portion 41 and is smaller than the outer diameter of the large diameter portion 45.
  • the front portion 41, the small diameter portion 46, and the large diameter portion 45 are formed with a transverse passage 47 that passes through them in the diameter direction (a direction orthogonal to the central axis 140 a of the inner hub main body 140).
  • the transverse passage 47 intersects and communicates with the longitudinal passage 43.
  • the elastic piece 48 is arranged at equiangular intervals with respect to the central axis 140a.
  • the elastic piece 48 extends substantially parallel to the central axis 140a.
  • a fitting groove 48 a and a tapered surface 48 b are formed on the surface opposite to the rear portion 42 of the elastic piece 48.
  • the fitting groove 48 a is a recess (groove) along the circumferential direction of the inner hub main body 140.
  • the tapered surface 48b is adjacent to the fitting groove 48a on the free end side of the elastic piece 48, and forms a part of a conical surface having a large outer diameter on the fitting groove 48a side.
  • connection part 72 is a strip-shaped thin plate.
  • a notch 75 that is locally thinned is formed at the boundary between the elastic piece 48 and the connecting portion 72.
  • a pair of fixing portions 73 extend from the operation portion 71 toward the inner hub main body 140 so as to sandwich the connecting portion 72.
  • the fixing portion 73 is a strip-shaped thin plate, and can be easily elastically deformed in a direction in which the fixing portion 73 comes in contact with or separates from the connecting portion 72.
  • a hard material is preferable,
  • a polycarbonate, a polypropylene, polyethylene etc. can be used.
  • the inner needle 50 is inserted into the longitudinal passage 43 from the front portion 41 side of the inner hub main body 140 and is held by the inner hub 40.
  • the rear portion 42 is inserted into the flexible tube 60 and the inner hub 40 and the tube 60 are connected.
  • the inner needle 50 and the tube 60 are communicated through the longitudinal passage 43 of the inner hub body 140.
  • the end opposite to the inner hub body 140 of the tube 60 is connected to, for example, an infusion circuit for performing infusion.
  • the inner needle 50 is made of a metal hard material.
  • the inner needle 50 has a substantially cylindrical shape, and the tip is processed sharply.
  • the material of the tube 60 is not particularly limited, but is preferably a soft material.
  • a resin material such as vinyl chloride can be used.
  • the O-ring 49 is attached to the annular groove (see FIGS. 3A and 3B) of the inner hub main body 140.
  • the O-ring 49 is in close contact with the inner peripheral surface of the shield cylinder 21, and in the inner cavity 24 of the shield 20, the drug solution or blood on the outer needle 30 side of the O-ring 49 leaks to the tube 60 side of the O-ring 49. prevent.
  • the material of the O-ring 49 is not particularly limited, but is preferably a flexible material that can be elastically deformed. For example, polyisoprene rubber, silicone rubber, thermoplastic elastomer, or the like can be used.
  • the shield 20, the outer needle 30 fixed to the shield 20, the wings 29 a and 29 b, and the fixing member 28 constitute an outer unit 101 of the indwelling needle device 100.
  • the inner hub 40, the inner needle 50, and the tube 60 constitute an inner unit 102 of the indwelling needle device 100.
  • the inner unit 102 is inserted into the outer unit 101 so as to be movable in the longitudinal direction of the shield 20 (that is, the front-rear direction).
  • the inner hub main body 140 is located on the front end side of the inner cavity 24 of the shield 20, the inner needle 50 held by the inner hub 40 penetrates the outer needle 30, and the tip thereof is the outer needle 30. Projects outward from the tip.
  • the operation unit 71 is located behind the rear end of the shield 20 and is exposed to the outside.
  • fixed part 73 is arrange
  • FIG. 4 is a perspective view seen from above the indwelling needle device 100 in which the inner unit 102 is in the retracted position.
  • FIG. 5 is a cross-sectional view of the indwelling needle device 100 along the vertical plane (YZ plane) including the line 5-5 in FIG.
  • the flow path from the outer needle 30 to the tube 60 includes a first flow path that sequentially passes through the lumen of the inner needle 50 and the longitudinal passage 43 of the inner hub body 140, the inner surface of the shield 20, and the inner needle. 50 and the outer surface of the inner hub main body 140, the transverse passage 47 of the inner hub main body 140, and the second flow path passing through the longitudinal passage 43 of the inner hub main body 140 in this order. Or blood can be shed.
  • the inner unit 102 moves from the initial position shown in FIGS. 1 and 2 to the retracted position shown in FIGS. Can move.
  • the indwelling needle device 100 of the present embodiment is delivered to a medical institution such as a hospital in a state where the inner unit 102 is disposed at the initial position (FIGS. 1 and 2).
  • a medical institution such as a hospital
  • the inner unit 102 is positioned at the initial position.
  • the operator moves the inner needle 50 and the outer needle 30 with the inner unit 102 in the initial position and the inner needle 50 protruding from the tip of the outer needle 30.
  • the patient's blood vessel is punctured (puncture operation).
  • the inner needle 50 receives a reaction force opposite to the puncturing direction. This reaction force acts to move the inner unit 102 toward the retracted position with respect to the outer unit 101.
  • An indwelling needle is held while holding a portion of the inner hub 40 located outside the shield 20, that is, the operation portion 71 or the pair of fixing portions 73 so that the inner unit 102 does not move toward the retracted position with respect to the outer unit 101.
  • the device 100 is punctured.
  • the inner unit 102 is retracted (retracting operation). For example, while holding the outer unit 101 with one hand (for example, a hand different from the one holding the indwelling needle device 100 by a puncturing operation) so that the outer unit 101 is not displaced with respect to the patient, The operation unit 71 of the inner hub 40 may be held and the inner unit 102 may be pulled out from the outer unit 101. The inner unit 102 moves rearward together with the operation unit 71.
  • a locking projection 22 is formed on the inner peripheral surface near the rear end of the shield tube 21.
  • the inner hub main body 140 moves to the locking protrusion 22, and a tapered surface 48 b (see FIGS. 3A and 3B) formed on the outer surface of the elastic piece 48 of the inner hub main body 140 slides on the locking protrusion 22.
  • the elastic piece 48 is elastically deformed toward the rear portion 42 side.
  • the taper surface 48b gets over the locking protrusion 22, the elastic piece 48 is elastically recovered, and the locking protrusion 22 is fitted into the fitting groove 48a.
  • the inner unit 102 moves to the retracted position shown in FIGS.
  • FIG. 5 is a perspective view of the indwelling needle device 100 in which the inner hub 40 is divided by a notch 75 and a portion behind the notch 75 of the inner hub 40 is removed.
  • an adhesive tape is applied to the patient's skin from above the outer unit 101, and the indwelling needle device 100 is fixed to the patient. Only the outer needle 30 is indwelled while being punctured by the patient.
  • the inner unit 102 is in the retracted position, the hard inner needle 50 does not exist in the flexible outer needle 30, so that even if the posture of the indwelling needle device 100 with respect to the patient changes temporarily due to movement of the patient, the outer needle 30 does not damage the patient's blood vessels or the like.
  • the adhesive tape for fixing the outer unit 101 is peeled off from the patient, and the outer needle 30 is pulled out from the patient. Even if the tube 60 is pushed and pulled with respect to the outer unit 101, the fitting state between the fitting groove 48a of the inner hub main body 140 and the locking projection 22 of the shield tube 21 is not released. That is, the inner needle 50 cannot protrude again from the tip of the outer needle 30, and the inner unit 102 cannot be pulled out from the outer unit 101. Accordingly, it is possible to prevent the hard inner needle 50 from being punctured by mistake and the used indwelling needle device 100 from being reused by mistake. The used indwelling needle device 100 is discarded.
  • the indwelling needle device 100 is punctured while holding the portion of the inner hub 40 located outside the shield 20 (for example, the operation unit 71 and the pair of fixing units 73). Can do. Therefore, even if the inner needle 50 receives a reaction force in the puncturing operation, the inner unit 102 does not move toward the retracted position and remains at the initial position.
  • the configuration (see FIG. 1) of the portion of the inner hub 40 positioned outside the shield 20 (that is, the operation portion 71 and the pair of fixing portions 73) is a conventional indwelling needle device 900.
  • 8 is substantially the same as the configuration (see FIG. 7) of the portion of the stopper 970 located outside the shield 920 (that is, the base portion 971 and the pair of fixing portions 973). Therefore, the puncturing operation can be performed with an operational feeling almost the same as that of puncturing a patient with the conventional indwelling needle device 900.
  • the inner hub main body 140, the operation part 71, the connecting part 72, and the pair of fixing parts 73 are integrated. Therefore, in order to perform the backward operation after the puncturing operation, for example, the operation unit 71 may be grasped and pulled backward. When the operation unit 71 is pulled, the inner hub main body 140 moves rearward integrally with the operation unit 71.
  • the indwelling needle device 100 of the present embodiment does not include an independent member corresponding to the stopper 970 (see FIG. 9) of the conventional indwelling needle device 900.
  • Members corresponding to the conventional stopper 970 are integrated with the inner hub body 140.
  • the operation unit 71 If the operation unit 71 is gripped and moved backward, the inner hub main body 140 always moves backward. Therefore, the possibility of erroneous operation that may occur in the conventional indwelling needle device 900 such as forgetting to move the inner unit 902 to the retracted position is reduced in this embodiment.
  • the inner unit 102 is moved to the retracted position by grasping the tube 60 instead of the operation unit 71 of the inner hub 40 and pulling it out from the outer unit 101. It is possible to make it.
  • the inner hub 40 can be easily separated by the notch 75 after the inner unit 102 is moved to the retracted position (see FIGS. 4 and 5). As shown in FIGS. 4 and 5, if the inner hub 40 protrudes far behind the rear end of the shield 20, an external force acts unintentionally on the protruding inner hub 40 and the outer needle 30. May cause troubles such as losing from the patient. By reducing the protrusion of the inner hub 40 out of the shield 20 as shown in FIG. 6 when the inner unit 102 is in the retracted position, the safety of subsequent operations can be improved.
  • a stopper 970 was provided as a separate member from the inner hub 940.
  • the indwelling needle apparatus 100 of this embodiment is not provided with the independent member called a stopper. Therefore, the number of parts constituting the indwelling needle device 100 is reduced, and thereby the number of assembly steps for the indwelling needle device 100 can be reduced. As a result, the cost of the indwelling needle device 100 can be reduced.
  • the conventional indwelling needle device 900 has a problem that the stopper falls off due to vibration during transfer.
  • the indwelling needle apparatus 100 of this embodiment is not provided with the independent member called a stopper.
  • the O-ring 49 attached to the inner hub 40 is in close contact with the inner peripheral surface of the shield cylinder 21, a certain amount of external force is required to move the inner unit 102 relative to the outer unit 101. Accordingly, after the indwelling needle device 100 is shipped with the inner unit 102 as the initial position, the inner unit 102 is displaced from the initial position to the retracted position due to vibration during transfer, and further, the inner hub 40 is shielded. The possibility of falling off 20 is low.
  • the posture of the inner hub 940 in the direction of rotation within the shield 920 (the direction of rotation around the central axis of the inner needle 950) is set. It was difficult to align accurately.
  • the notch 75 is formed at the boundary position between the inner hub main body 140 and the connecting portion 72.
  • the inner hub 40 is divided by the notch 75 in a state where the inner unit 102 is moved to the retracted position. If it can be done, the position of the notch 75 is not limited to this.
  • the notch 75 may be formed on the connecting portion 72.
  • the notch 75 having a reduced thickness is formed in order to facilitate the division of the inner hub 40, but the shape of the notch is not limited to this as long as the division can be facilitated.
  • the notch may locally reduce the width of the inner hub 40.
  • the inner hub 40 is divided by the notch 75, but the notch 75 may be omitted if the inner hub 40 can be divided.
  • the inner hub main body 140, the operation unit 71, the coupling unit 72, and the fixing unit 73 are simultaneously and integrally formed as one component by a method such as injection molding. can do.
  • the inner hub 40 of the present invention may be formed by joining two or more separately prepared parts to one part by a method such as adhesion.
  • the inner hub main body 140 and other parts that is, the operation unit 71, the coupling unit 72, and the fixing unit 73
  • a third component may be used for the joint portion.
  • the location of the inner hub 40 that is divided after the inner unit 102 is moved to the retracted position may be a joint location of separately created parts, or a location other than this.
  • the configurations of the outer unit 101 and the inner unit 102 can be arbitrarily changed within the scope of the present invention.
  • a large-area flat surface portion may be provided on the outer surface of the operation portion 71 so that the operation portion 71 can be easily grasped, and an uneven shape for preventing slipping may be formed.
  • the pair of fixing portions 73 may be omitted.
  • the connecting portion 72 may have any shape as long as the inner hub main body 140 and the operation portion 71 can be connected.
  • a thin rod shape may be used.
  • the fitting structure between the hub 40 and the shield 20 in the retracted position may have a configuration other than the above.
  • the fitting structure may be omitted.
  • the outer unit 101 shown in the above embodiment includes the shield cylinder 21, the outer hub 25, and the outer needle 30 which are separate parts. However, the shield cylinder 21 and the outer hub 25 are integrated into one part. The outer hub 25 and the outer needle 30 may be integrated into one part, and the shield tube 21, the outer hub 25, and the outer needle 30 may be integrated into one part. Also good. The wings 29a and 29b and the fixing member 28 that are attached to the outer unit 101 may be omitted.
  • the inner unit 102 is brought into the initial position with respect to the outer unit 101 by causing the front edge of the large-diameter portion 45 of the inner hub body 140 to collide with the rear edge of the outer hub 25. Positioned.
  • the position in the front-rear direction of the inner unit 102 at the initial position may be regulated by bringing the inner unit 102 and the outer unit 101 into contact at a place other than the above.
  • the indwelling needle device of the present invention is used for hemodialysis.
  • the use of the indwelling needle device of the present invention is not limited to this, and is used for any application in which an indwelling needle device such as infusion or blood transfusion is used. can do.
  • the field of application of the present invention is not particularly limited, and can be widely used as an indwelling needle device for performing treatments such as infusion, blood transfusion, and extracorporeal blood circulation. Especially, it can utilize preferably as an indwelling needle apparatus for hemodialysis.

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

Abstract

Selon l'invention, une unité externe (101) est équipée d'un blindage (20) possédant une cavité interne (24), et d'une aiguille externe (30) souple fixée à l'extrémité avant du blindage. Une unité interne (102) est équipée : d'un raccord interne (40) dont une partie est disposée à l'intérieur de la cavité interne du blindage; d'une aiguille interne (50) rigide fixée à l'extrémité avant du raccord interne; et d'un tube (60) connecté à l'extrémité au raccord interne. L'unité interne bouge par rapport à l'unité externe depuis une position initiale où l'aiguille interne traverse l'aiguille externe et fait saillie depuis l'extrémité avant de l'aiguille externe, vers une position de retrait où l'aiguille interne est admise à l'intérieur de la cavité interne du blindage. Le raccord interne est équipé d'une partie manipulation (71) côté opposé à l'aiguille interne. Lorsque l'unité interne est disposée en position initiale, la partie manipulation est positionnée à l'extérieur du blindage.
PCT/JP2013/065082 2012-05-31 2013-05-30 Dispositif d'aiguille à demeure WO2013180234A1 (fr)

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JP2012-125047 2012-05-31
JP2012125047A JP2013248159A (ja) 2012-05-31 2012-05-31 留置針装置

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018191361A1 (fr) 2017-04-13 2018-10-18 Teleflex Medical Incorporated Dispositif d'insertion de cathéter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56125058A (en) * 1979-11-29 1981-10-01 Abbott Lab Improved vein needling device
JP2009254576A (ja) * 2008-04-16 2009-11-05 Jms Co Ltd 留置針装置
JP4506834B2 (ja) * 2006-01-20 2010-07-21 株式会社ジェイ・エム・エス 医療用針装置
JP2011251081A (ja) * 2010-06-04 2011-12-15 Jms Co Ltd 留置針装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0724071A (ja) * 1993-07-09 1995-01-27 Terumo Corp 血管内留置カテーテル組立体
JP4586974B2 (ja) * 2005-02-28 2010-11-24 株式会社ジェイ・エム・エス 留置針構造
JP4586975B2 (ja) * 2005-02-28 2010-11-24 株式会社ジェイ・エム・エス 留置針構造
JP5637350B2 (ja) * 2009-12-14 2014-12-10 株式会社ジェイ・エム・エス 針装置
JP2013022069A (ja) * 2011-07-15 2013-02-04 Jms Co Ltd 留置針装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56125058A (en) * 1979-11-29 1981-10-01 Abbott Lab Improved vein needling device
JP4506834B2 (ja) * 2006-01-20 2010-07-21 株式会社ジェイ・エム・エス 医療用針装置
JP2009254576A (ja) * 2008-04-16 2009-11-05 Jms Co Ltd 留置針装置
JP2011251081A (ja) * 2010-06-04 2011-12-15 Jms Co Ltd 留置針装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018191361A1 (fr) 2017-04-13 2018-10-18 Teleflex Medical Incorporated Dispositif d'insertion de cathéter
EP3609565A4 (fr) * 2017-04-13 2021-01-13 Teleflex Medical Incorporated Dispositif d'insertion de cathéter

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