WO2009157289A1 - Aiguille interne et procédé pour sa fabrication - Google Patents

Aiguille interne et procédé pour sa fabrication Download PDF

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Publication number
WO2009157289A1
WO2009157289A1 PCT/JP2009/060335 JP2009060335W WO2009157289A1 WO 2009157289 A1 WO2009157289 A1 WO 2009157289A1 JP 2009060335 W JP2009060335 W JP 2009060335W WO 2009157289 A1 WO2009157289 A1 WO 2009157289A1
Authority
WO
WIPO (PCT)
Prior art keywords
needle
indwelling needle
indwelling
outer needle
catheter
Prior art date
Application number
PCT/JP2009/060335
Other languages
English (en)
Japanese (ja)
Inventor
西澤裕史
Original Assignee
テルモ株式会社
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 テルモ株式会社 filed Critical テルモ株式会社
Priority to CN2009901002079U priority Critical patent/CN201987967U/zh
Priority to JP2010517843A priority patent/JP5552050B2/ja
Publication of WO2009157289A1 publication Critical patent/WO2009157289A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/08—Detecting organic movements or changes, e.g. tumours, cysts, swellings
    • A61B8/0833—Detecting organic movements or changes, e.g. tumours, cysts, swellings involving detecting or locating foreign bodies or organic structures
    • A61B8/0841—Detecting organic movements or changes, e.g. tumours, cysts, swellings involving detecting or locating foreign bodies or organic structures for locating instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/42—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for desensitising skin, for protruding skin to facilitate piercing, or for locating point where body is to be pierced
    • A61M5/427—Locating point where body is to be pierced, e.g. vein location means using ultrasonic waves, injection site templates
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3403—Needle locating or guiding means
    • A61B2017/3413—Needle locating or guiding means guided by ultrasound
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
    • A61B2090/3925—Markers, e.g. radio-opaque or breast lesions markers ultrasonic
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
    • A61M2005/1588—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body having means for monitoring, controlling or visual inspection, e.g. for patency check, avoiding extravasation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/329—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles characterised by features of the needle shaft

Definitions

  • the present invention relates to an indwelling needle that punctures a blood vessel for infusion and a method for manufacturing the indwelling needle.
  • a guide wire is inserted through the outer needle to a desired location. Then, after the guide wire reaches the desired blood vessel, the outer needle is removed, the indwelling catheter is inserted into the blood vessel along the guide wire, and the indwelling catheter is supplied with nutrients, chemicals, etc. Connect the infusion line and infuse.
  • an ultrasonic wave is transmitted from an ultrasonic imaging device, the position of a blood vessel to be punctured is confirmed, the ultrasonic wave is irradiated to the punctured indwelling needle, and its reflection is reflected. The treatment is performed while confirming the position of the indwelling needle based on the image obtained based on the wave.
  • the indwelling needle since the indwelling needle is punctured into the patient's body, the reflection of the ultrasonic wave is weak depending on the puncture depth, angle, etc., and the position of the indwelling needle should be confirmed based on the reflected wave of the ultrasonic wave. May be difficult.
  • a groove is provided on the outer peripheral surface of the inner needle to reliably reflect the ultrasonic wave from the ultrasonic imaging apparatus for position confirmation.
  • this indwelling needle includes a tubular outer needle and an inner needle that is slidably inserted therein, and has a concave shape on the outer peripheral surface of the inner needle.
  • the spiral groove is formed.
  • the puncture needle is punctured into the affected area of the patient, and the ultrasonic wave is irradiated from the ultrasonic imaging device to the puncture site, so that the ultrasonic wave is reflected to the air layer in the spiral groove and the reflected wave is The picked-up image of the puncture needle is obtained by receiving with an ultrasonic imaging device.
  • a general object of the present invention is to provide an indwelling needle capable of confirming a position in the body more accurately and with high accuracy by ultrasonic waves, and capable of performing a safe and reliable procedure, and a method for manufacturing the indwelling needle. Is on purpose.
  • the present invention relates to an indwelling needle having an outer needle and an inner needle inserted into the outer needle.
  • the outer needle is provided on an inner peripheral surface in the vicinity of the distal end portion, and includes a concave portion that is recessed in a convex shape in section toward the outer peripheral side.
  • an outer needle and an inner needle inserted into the outer needle are provided, and a recess recessed in a convex section is formed on the inner peripheral surface in the vicinity of the distal end portion of the outer needle.
  • the ultrasonic wave can be reliably and suitably reflected by the concave portion having a convex cross section and detected by the ultrasonic device.
  • the indwelling needle punctured by the patient can be reliably and accurately confirmed by the ultrasonic device, and a safe and reliable procedure can be performed while confirming the position of the indwelling needle.
  • the concave portion is formed in a convex shape in cross section toward the outer peripheral side of the outer needle, it is possible to reliably and suitably reflect the ultrasonic wave toward the ultrasonic device side on the wall surface of the concave portion. .
  • the present invention relates to an indwelling needle having an outer needle and an inner needle inserted into the outer needle.
  • the outer needle includes an outer layer and an inner layer provided on the inner periphery of the outer layer,
  • the outer layer is provided on the inner peripheral surface in the vicinity of the tip portion, and includes a concave portion that is recessed in a convex cross section toward the outer peripheral side.
  • an outer layer and an inner layer provided on the inner periphery of the outer layer are provided, and a recess recessed in a convex section is formed on the inner peripheral surface near the tip of the outer layer.
  • the ultrasonic wave can be reliably and suitably reflected by the concave portion having a convex cross section and detected by the ultrasonic device.
  • the indwelling needle punctured by the patient can be reliably and accurately confirmed by the ultrasonic device, and a safe and reliable procedure can be performed while confirming the position of the indwelling needle.
  • the concave portion is formed to have a convex cross section toward the outer peripheral side of the outer layer, it is possible to reliably and suitably reflect the ultrasonic wave toward the ultrasonic device side on the wall surface of the concave portion.
  • the inner layer and the outer layer are integrally joined, and a space portion that holds gas therein is provided between the inner layer and the outer layer, so that an ultrasonic wave irradiated from the ultrasonic device by the space portion is provided. Since the sound wave can be reliably and suitably reflected and detected, and the space portion can be sealed between the inner layer and the outer layer, when the indwelling needle including the outer needle is punctured into the patient, the body fluid And the like are prevented from entering the space.
  • the end portions of the inner layer and the outer layer are integrally joined to each other, and a space portion that holds gas therein is provided between the inner layer and the outer layer, so that ultrasonic waves are generated by the space portion.
  • the ultrasonic wave emitted from the apparatus can be reliably and suitably reflected and detected, and when an indwelling needle including the outer needle is punctured into a patient, body fluid or the like is prevented from entering the space.
  • the gas can be reliably held in the space.
  • the concave portion has a semicircular cross section and extends in a spiral shape along the axial direction of the outer needle to a predetermined length.
  • the inner wall surface of the recess may be provided so as to be able to reflect the ultrasonic wave irradiated from the ultrasonic echo device in the patient's body.
  • the present invention provides a manufacturing method for manufacturing an indwelling needle having an outer needle and an inner needle inserted into the outer needle. Inserting a processing jig into the tubular body, forming a recess in the inner peripheral surface of the tubular body, and producing an outer needle body; Removing the processing jig from the inside of the outer needle body; Inserting an inner tube into the outer needle body, joining the outer needle body and the inner tube, and forming a space between the outer needle body and the inner tube; It is characterized by having.
  • the processing jig is inserted into the tubular body, the concave body is formed on the inner peripheral surface of the tubular body to produce the outer needle body, and then the processing jig is taken out.
  • An indwelling needle is manufactured by inserting an inner tube into the outer needle body and joining the outer needle body and the inner tube together. Therefore, since the end portions of the outer needle main body and the inner tube are joined to each other after the concave portion is provided inside the outer needle main body constituting the outer needle, the gas is sealed in the concave portion.
  • the needle can be manufactured, and when the indwelling needle is punctured into the patient, the ultrasonic wave irradiated from the ultrasonic device by the concave portion and the gas in the concave portion is reliably and suitably reflected, and the position of the indwelling needle Can be confirmed.
  • the step of producing the outer needle main body includes forming the concave portion on the inner peripheral surface of the tubular body by heating and deforming the tubular body with the processing jig inserted in the tubular body. By doing so, a concave portion can be easily formed in the tubular body to form an outer needle body.
  • the step of forming the space portion includes the step of heating and joining the outer needle main body and the distal end portion of the inner tube to each other, and processing into a tapered shape that gradually decreases in diameter toward the distal end.
  • the tip of the indwelling needle including the outer needle body and the inner tube can be securely and easily joined to maintain the airtightness of the space, and the puncture resistance when puncturing the indwelling needle is reduced by processing into a tapered shape. Is possible.
  • the step of forming the space portion includes the step of heating and joining the proximal end portions of the outer needle main body and the inner tube, thereby securely securing the proximal end portion of the indwelling needle including the outer needle main body and the inner tube. And it can join simply and can maintain the airtightness of a space part.
  • FIG. 1 is an overall configuration diagram showing an indwelling needle according to the first embodiment.
  • FIG. 2 is an overall longitudinal sectional view of the indwelling needle shown in FIG.
  • FIG. 3 is an enlarged cross-sectional view showing the vicinity of the tip of the indwelling needle of FIG. 4 is an exploded perspective view of the vicinity of the tip of the indwelling needle shown in FIG. 5A to 5E are explanatory views showing a manufacturing process of the indwelling needle according to the first embodiment.
  • FIG. 6 is a schematic diagram showing a state where an indwelling needle is punctured into a patient and the indwelling needle is detected by an ultrasonic echo device.
  • FIG. 1 is an overall configuration diagram showing an indwelling needle according to the first embodiment.
  • FIG. 2 is an overall longitudinal sectional view of the indwelling needle shown in FIG.
  • FIG. 7 is an enlarged view showing a state in which the ultrasonic wave from the ultrasonic echo device is irradiated and reflected on the indwelling needle of FIG.
  • FIG. 8 is an enlarged cross-sectional view showing the vicinity of the distal end portion of the indwelling needle according to the modification.
  • FIG. 9 is an enlarged cross-sectional view showing the vicinity of the distal end portion of the indwelling needle according to the second embodiment.
  • reference numeral 10 indicates an indwelling needle according to the first embodiment of the present invention.
  • the indwelling needle 10 includes a catheter (outer needle) 20, an outer needle hub 28 that holds the catheter 20, and a puncture needle (inner needle) 18 that is inserted into the catheter 20. And an inner needle hub 14 that holds the puncture needle 18, and the inner needle hub 14 is configured to fit inside the outer needle hub 28.
  • the syringe 16 can be connected (fitted) to the end of the inner needle hub 14.
  • This puncture needle 18 is a hollow tube body, and a shallow introduction groove 24 extending along the axial direction (arrows A and B directions) is provided on the outer peripheral surface thereof, and flows into the introduction groove 24. Flashback can be confirmed by blood.
  • the catheter 20 includes an outer needle main body (outer layer) 26 and an inner tube (inner layer) 22 provided on the inner peripheral side of the outer needle main body 26.
  • the outer needle body 26 is formed transparently from a thermoplastic resin material such as polyurethane or polyethylene, has an appropriate elasticity, and is provided so as to cover the outer peripheral side of the puncture needle 18.
  • the outer needle main body 26 reaches the vicinity of the distal end of the puncture needle 18, and when the distal end of the puncture needle 18 is inserted into the blood vessel, the outer needle main body 26 is also inserted into the same blood vessel.
  • the outer needle main body 26 has a spiral groove (recess) 30 that is recessed in a cross-sectional convex shape on the inner peripheral surface in the vicinity of the tip (in the direction of arrow A).
  • the groove 30 is formed and extends with a predetermined length along the axial direction (arrow A, B direction) of the outer needle main body 26.
  • the concave groove 30 is formed in a substantially semicircular cross section opened toward the inner peripheral side of the outer needle main body 26, and is formed at a substantially constant depth along the axial direction of the outer needle main body 26.
  • the inner tube 22 is formed of a resin material such as polyurethane or polyethylene and is formed in a cylindrical shape that is transparent and inserted into the outer needle main body 26, and the puncture needle 18 is inserted through the inner tube 22 so as to be freely inserted.
  • the inner tube 22 may be formed from the same resin material as that of the outer needle body 26 or may be formed from another resin material.
  • the outer diameter of the inner tube 22 is formed to be smaller than the inner diameter of the outer needle main body 26, and a gap 32 spaced apart by a predetermined distance in the radial direction is formed between the outer surface of the inner tube 22 and the inner surface of the catheter 20.
  • the inner peripheral diameter of the inner tube 22 is formed to be approximately equal to or slightly larger than the outer peripheral diameter of the puncture needle 18. Then, by inserting the inner tube 22 into the outer needle main body 26 constituting the catheter 20, the concave groove 30 and the gap 32 become a space portion S covered with the outer peripheral surface of the inner tube 22.
  • the syringe 16 includes a cylindrical syringe body 36 and a plunger 38 inserted into the syringe body 36.
  • a gasket 40 is attached to one end of the plunger 38, and the rear end of the plunger 38 is a syringe body. Projecting outward from the base end of 36.
  • connection port 42 protrudes from the distal end portion of the syringe body 36 and is connected to the proximal end portion of the inner needle hub 14 via the connection port 42. That is, the syringe 16 communicates with the inside of the inner needle hub 14 through the connection port 42.
  • the indwelling needle 10 according to the first embodiment of the present invention is basically configured as described above. Next, a method for manufacturing the indwelling needle 10 will be described with reference to FIGS. 5A to 5E. To do.
  • a processing jig 46 is inserted into a tubular body 44 formed of a thermoplastic resin with a substantially constant diameter, and a concave groove (concave portion) 30 is formed on the inner peripheral surface of the tubular body 44.
  • the processing jig 46 includes a shaft body 48 and a groove processing portion 50 formed at the tip of the shaft body 48, and the groove processing portion 50 has a coil 52 spirally formed on the outer peripheral surface of the shaft body 48. It is formed by winding.
  • the groove processing portion 50 has an outer peripheral diameter set larger than the outer peripheral diameter of the shaft body 48 and protrudes radially outward, and is set slightly larger than the inner peripheral diameter of the outer needle main body 26.
  • the tubular body 44 is heated by a heater or the like (not shown) and thermally contracted in the radial inward direction (arrow C direction).
  • the inner peripheral surface of the tubular body 44 is deformed so as to be in close contact with the groove processing portion 50 of the processing jig 46, and the concave groove 30 that is recessed in the cross-sectional shape of the coil 52 is spirally formed on the inner peripheral surface. It is formed. That is, the outer needle body 26 having the concave groove 30 on the inner peripheral surface is formed.
  • the processing jig 46 is rotated with respect to the tubular body 44 (outer needle main body 26) in which the concave groove 30 is formed, and is displaced in a direction away from the outer needle main body 26 (arrow B direction) for processing.
  • the jig 46 is removed from the outer needle body 26 (see FIG. 5C).
  • the inner tube 22 is inserted into the outer needle main body 26, and a gap 32 with a predetermined interval is formed between the inner peripheral surface of the outer needle main body 26 and the outer peripheral surface of the inner tube 22. Hold in the provided state.
  • the distal end portions of the outer needle body 26 and the inner tube 22 are heated (for example, by high-frequency machining), joined to each other, and formed (processed) into a tapered shape that gradually decreases in diameter toward the distal end (see FIG. 5E). ).
  • the outer needle main body 26 and the proximal end portion of the inner tube 22 are heated and joined to each other, and then the outer needle hub 28 is attached.
  • the inner tube 22 is integrally joined by thermal processing at the distal end portion and the proximal end portion of the outer needle main body 26, and the space S defined between the outer needle main body 26 and the inner tube 22 is sealed. Airtightness is maintained.
  • the concave groove 30 is not limited to the case where the concave groove 30 is formed in a spiral shape.
  • the concave groove 30 may be a plurality of annular grooves spaced at equal intervals along the axial direction of the catheter 20.
  • the processing tool 46 having the groove processing portion 50 is inserted into the tubular body 44 to be the outer needle main body 26, and the tubular body 44 is heated and thermally contracted, whereby the spiral concave groove 30.
  • the outer needle body 26 catheter 20
  • the concave groove 30 and the gap 32 are hermetically sealed. It is possible to hold air (gas).
  • a medical staff such as a doctor grasps and punctures the indwelling needle 10 toward a blood vessel (vein) of a patient 56, and a probe of an ultrasonic echo device (ultrasonic irradiation device) 58.
  • 60 is pressed against the vicinity of the puncture site of the patient 56 and an echo beam (ultrasound) E is irradiated.
  • the probe 60 is configured to receive the echo beam E reflected by generating the echo beam E.
  • This echo beam E is irradiated inward from the skin surface 56a of the patient 56, and as shown in FIG. 7, the inside of the concave groove 30 formed between the catheter 20 of the indwelling needle 10 and the inner tube 22 is formed.
  • the light is reflected by the wall surface 30 a and is similarly reflected by the air sealed in the concave groove 30.
  • the echo beam E is reflected by the inner wall surface 30a of the concave groove 30, it is not attenuated by the air in the concave groove 30, and is reflected with an intensity substantially equal to the intensity of irradiation.
  • the echo beam E reflected by the concave groove 30 of the catheter 20 is received by the probe 60, and the received data is output from the probe 60 to the control unit (not shown) of the ultrasonic echo device 58 through the lead wire 64 and processed.
  • the image is displayed on the display 62 as an image.
  • the image of the indwelling needle 10 displayed on the display 62 is displayed in a linear shape corresponding to the length along the axial direction of the concave groove 30 detected by the ultrasonic echo device 58, and the distal end portion of the image is displayed on the patient. It can be confirmed from the display 62 whether or not 56 blood vessels (veins) have been reached.
  • the vicinity of the distal end portion of the catheter 20 provided with the concave groove 30 is clearly displayed as an image on the display 62 of the ultrasonic echo device 58, and the position of the indwelling needle 10 including the catheter 20 can be confirmed with high accuracy. Can do. In other words, the visibility of the indwelling needle 10 can be further improved.
  • the doctor or the like moves the indwelling needle 10 and the probe 60 while confirming the display 62, and guides the puncture needle 18 to the blood vessel of the patient 56.
  • the indwelling needle 10 is advanced while appropriately pulling the plunger 38 of the syringe 16.
  • the catheter 20 was left, the puncture needle 18 and the syringe 16 were removed, and a guide wire (not shown) was inserted through the catheter 20 into the blood vessel. Later, the catheter 20 is removed. Next, an indwelling catheter (central venous catheter) (not shown) is placed in the blood vessel along the guide wire. Next, an infusion line (not shown) is connected to the indwelling catheter to supply nutrients, chemicals, and the like into the blood vessel.
  • the indwelling needle 10 includes the catheter 20 and the puncture needle 18 inserted into the catheter 20, and the catheter 20 includes the outer needle body 26, the outer needle. And an inner tube 22 provided on the inner peripheral side of the main body 26.
  • the outer needle main body 26 is provided on the inner peripheral surface in the vicinity of the distal end portion, and is a concave groove 30 that is recessed in a convex section toward the outer peripheral side. Is provided.
  • the indwelling needle 10 punctured with respect to the patient 56 can be reliably and accurately confirmed by the ultrasonic echo device 58, and a doctor or the like can perform a safe and reliable procedure while confirming the position of the indwelling needle 10. Can be done.
  • the groove 30 is formed in a semicircular cross section, the inner wall surface of the groove 30 can be obtained even when the puncture angle ⁇ (see FIG. 6) of the indwelling needle 10 with respect to the skin surface 56a of the patient 56 is changed.
  • the echo beam E of the ultrasonic echo device 58 can be reflected toward the probe 60 side, which is the irradiation direction of the echo beam E, by 30a.
  • the position of the indwelling needle 10 can be confirmed by reflecting the echo beam E toward the probe 60 regardless of the puncture angle of the indwelling needle 10.
  • the position of the catheter 20 can be confirmed reliably and with high accuracy by the concave groove 30 provided in the catheter 20, for example, indwelling Even if the catheter 20 moved by mistake, the position can be confirmed by the ultrasonic echo device 58 and returned to the desired position.
  • the tip portion of the indwelling needle 10 is formed in a tapered shape so that the diameter of the tip portion gradually decreases.
  • the tip position of the indwelling needle 10 can be detected by reflecting toward the side. That is, since the echo beam E of the ultrasonic echo device 58 can be reflected at the distal end portion of the catheter 20 in addition to the concave groove 30 provided in the catheter 20, the vicinity of the distal end portion of the catheter 20 can be viewed over a wide range. It becomes.
  • the concave groove 30 is provided on the inner peripheral surface of the catheter 20 and is covered by the inner tube 22, it is not exposed to the outside of the indwelling needle 10 and does not protrude to the outside. . Therefore, for example, compared to the case where an uneven groove portion is provided outside the indwelling needle 10, when the indwelling needle 10 is punctured into the patient 56, there is no resistance and the load on the patient 56 is reduced. Can do.
  • the indwelling needle 10 according to the first embodiment described above, the case where the gap 32 of a predetermined interval is provided between the inner peripheral surface of the outer needle main body 26 and the outer peripheral surface of the inner tube 22 has been described.
  • the inner peripheral surface of the catheter (outer needle) 102 and the outer peripheral surface of the inner tube 104 may be brought into close contact with each other without providing the gap 32.
  • the outer diameter of the catheter 102 can be set small, and the indwelling needle 100 including the catheter 102 can be reduced in diameter.
  • an indwelling needle 120 according to the second embodiment is shown in FIG.
  • the same referential mark is attached
  • an inner tube is not provided between the catheter (outer needle) 122 and the puncture needle (inner needle) 18, and is provided on the inner peripheral surface of the catheter 122.
  • the concave groove 30 is provided so as to face the outer peripheral surface of the puncture needle 18.
  • the puncture needle 18 is inserted into the outer needle main body 26 constituting the catheter 122, and the inner peripheral diameter of the outer needle main body 26 is set substantially equal to the outer peripheral diameter of the puncture needle 18. Then, the concave groove 30 formed on the inner peripheral surface of the catheter 122 is closed by the outer peripheral surface of the puncture needle 18. A space S is formed in the concave groove 30 by the outer peripheral surface of the puncture needle 18.
  • the indwelling needle 120 includes the catheter 122 and the puncture needle 18 inserted into the catheter 122, and the catheter 122 is configured by the outer needle body 26. Therefore, compared with the case where the inner tube is provided on the inner periphery of the outer needle main body 26, the number of parts and the manufacturing cost can be reduced, and the number of assembling steps can be reduced.
  • indwelling needle and the manufacturing method thereof according to the present invention are not limited to the above-described embodiments, and it goes without saying that various configurations can be adopted without departing from the gist of the present invention.

Abstract

L'invention concerne une aiguille interne et un procédé pour la fabrication de l'aiguille interne. Une aiguille interne (10) est dotée d'une aiguille de perforation (18) constituée d'un corps tubulaire creux (44), d'un cathéter (20) monté sur le côté de la périphérie extérieure de l'aiguille de perforation (18) et constitué d'un matériau de résine, et d'un tube intérieur (22) monté entre l'aiguille de perforation (18) et le cathéter (20). Une rainure hélicoïdale (30) s'étend le long de l'axe du cathéter (20) dans la surface périphérique intérieure du cathéter (20). Un interstice (32) qui présente une largeur prédéterminée est prévu entre la surface périphérique intérieure du cathéter (20) et la surface périphérique extérieure du tube intérieur (22). La rainure (30) a une section transversale de forme semi-circulaire en creux en direction de la périphérie extérieure du cathéter (20) et est maintenue de manière étanche à l'air contre le tube intérieur (22).
PCT/JP2009/060335 2008-06-27 2009-06-05 Aiguille interne et procédé pour sa fabrication WO2009157289A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2009901002079U CN201987967U (zh) 2008-06-27 2009-06-05 留置针
JP2010517843A JP5552050B2 (ja) 2008-06-27 2009-06-05 留置針

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008-168753 2008-06-27
JP2008168753 2008-06-27

Publications (1)

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WO2009157289A1 true WO2009157289A1 (fr) 2009-12-30

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PCT/JP2009/060335 WO2009157289A1 (fr) 2008-06-27 2009-06-05 Aiguille interne et procédé pour sa fabrication

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JP (1) JP5552050B2 (fr)
CN (1) CN201987967U (fr)
MY (1) MY154724A (fr)
WO (1) WO2009157289A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011250999A (ja) * 2010-06-02 2011-12-15 Asahi Kasei Kuraray Medical Co Ltd 穿刺針及び血管表面切痕形成器具
JP2013505043A (ja) * 2009-09-17 2013-02-14 マウナ ケア テクノロジーズ 固形臓器を検査するための方法、光プローブおよび共焦点顕微鏡システム
CN103357103A (zh) * 2013-07-09 2013-10-23 夏敏 一种深静脉穿刺针
JP2016508843A (ja) * 2013-03-05 2016-03-24 カフィルディ, ロニーKAFILUDDI, Ronny 複合針
KR20190050026A (ko) * 2017-11-02 2019-05-10 재단법인 아산사회복지재단 깊이 측정이 가능한 기관내삽관 튜브
WO2022051725A1 (fr) * 2020-09-04 2022-03-10 The Regents Of The University Of California Dispositif et procédé de visualisation ultrasonore

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Publication number Priority date Publication date Assignee Title
JP2013505043A (ja) * 2009-09-17 2013-02-14 マウナ ケア テクノロジーズ 固形臓器を検査するための方法、光プローブおよび共焦点顕微鏡システム
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JP2011250999A (ja) * 2010-06-02 2011-12-15 Asahi Kasei Kuraray Medical Co Ltd 穿刺針及び血管表面切痕形成器具
JP2016508843A (ja) * 2013-03-05 2016-03-24 カフィルディ, ロニーKAFILUDDI, Ronny 複合針
CN103357103A (zh) * 2013-07-09 2013-10-23 夏敏 一种深静脉穿刺针
KR20190050026A (ko) * 2017-11-02 2019-05-10 재단법인 아산사회복지재단 깊이 측정이 가능한 기관내삽관 튜브
KR102035711B1 (ko) * 2017-11-02 2019-10-23 재단법인 아산사회복지재단 깊이 측정이 가능한 기관내삽관 튜브
WO2022051725A1 (fr) * 2020-09-04 2022-03-10 The Regents Of The University Of California Dispositif et procédé de visualisation ultrasonore

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