WO2023189225A1 - カテーテル組立体及び血管穿刺システム - Google Patents

カテーテル組立体及び血管穿刺システム Download PDF

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Publication number
WO2023189225A1
WO2023189225A1 PCT/JP2023/008210 JP2023008210W WO2023189225A1 WO 2023189225 A1 WO2023189225 A1 WO 2023189225A1 JP 2023008210 W JP2023008210 W JP 2023008210W WO 2023189225 A1 WO2023189225 A1 WO 2023189225A1
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WO
WIPO (PCT)
Prior art keywords
catheter assembly
light
needle
light emitting
needle body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2023/008210
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English (en)
French (fr)
Japanese (ja)
Inventor
水野慎一
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Terumo Corp
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Terumo Corp
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Filing date
Publication date
Application filed by Terumo Corp filed Critical Terumo Corp
Priority to JP2024511572A priority Critical patent/JPWO2023189225A1/ja
Publication of WO2023189225A1 publication Critical patent/WO2023189225A1/ja
Priority to US18/890,209 priority patent/US20250010040A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • 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
    • 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
    • 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
    • A61M25/09—Guide wires
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/02—General characteristics of the apparatus characterised by a particular materials
    • A61M2205/0227—Materials having sensing or indicating function, e.g. indicating a pressure increase
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3306—Optical measuring means
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/50—General characteristics of the apparatus with microprocessors or computers
    • A61M2205/502—User interfaces, e.g. screens or keyboards
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/58—Means for facilitating use, e.g. by people with impaired vision
    • A61M2205/583—Means for facilitating use, e.g. by people with impaired vision by visual feedback

Definitions

  • the present invention relates to a catheter assembly and a vascular puncture system.
  • Japanese Patent Laid-Open No. 10-99443 discloses a catheter assembly including a hollow catheter shaft, a hollow needle inserted into the inner lumen of the catheter shaft, and a guide wire inserted into the inner lumen of the needle.
  • a solid is disclosed.
  • a tip opening that communicates with the inner cavity of the needle is formed in the blade surface of the tip of the needle.
  • the present invention aims to solve the above-mentioned problems.
  • One aspect of the present invention includes a catheter member having a hollow catheter shaft, a needle member having a hollow needle inserted into the inner lumen of the catheter shaft, and a guide wire inserted into the inner lumen of the needle.
  • a catheter assembly comprising: a tip opening communicating with the lumen of the needle body formed in the blade surface of the tip portion of the needle body;
  • the catheter is provided with a light emitting part that emits external light, and in an initial state, the light emitting part is located so as to overlap the tip opening in a plan view when the blade surface is viewed from a direction perpendicular to the axis of the needle body. It is an assembly.
  • a blood vessel comprising: a light receiving section that receives reflected light reflected by the catheter assembly and the near-infrared light emitted by the light emitting section to create a received light image; and an image display section that displays the received light image. It is a puncture system.
  • the light emitting portion in the initial state of the catheter assembly, is located at a position overlapping the tip opening when the blade surface is viewed from a direction perpendicular to the axis of the needle body.
  • the near-infrared light emitted by the light-emitting part is guided to the outside of the needle body through the tip opening, so it can be visualized by a received light image created based on the near-infrared light.
  • near-infrared light is absorbed by hemoglobin in blood flowing through blood vessels. Therefore, the appearance of the light emitting part in the received light image changes before and after the blade surface enters the blood vessel. Therefore, the user can immediately know that the blade surface has entered the blood vessel.
  • FIG. 1 is a schematic configuration diagram of a blood vessel puncture system according to an embodiment of the present invention.
  • FIG. 2 is an exploded perspective view of the catheter assembly of FIG. 1.
  • 3A is a longitudinal cross-sectional view of the distal end of the catheter assembly of FIG. 1.
  • FIG. 3B is a plan view of the blade surface of the catheter assembly of FIG. 1 viewed from a direction perpendicular to the axis of the needle body.
  • FIG. 4 is a first illustration of a vascular puncture procedure using the catheter assembly of FIG. 1.
  • FIG. 5 is a received light image in the state shown in FIG.
  • FIG. 6 is a second illustration of a vascular puncture procedure using the catheter assembly of FIG. 1.
  • FIG. 7 is a received light image in the state shown in FIG.
  • FIG. 8 is a third illustration of a blood vessel puncture procedure using the catheter assembly of FIG. 1.
  • FIG. 9 is a schematic configuration diagram of a catheter assembly according to a modified example.
  • a vascular puncture system 10 includes a catheter assembly 12 and a visualization device 14.
  • the catheter assembly 12 is configured, for example, as an indwelling needle for administering an infusion (medicine) into a blood vessel 202 of a living body part 200.
  • the catheter assembly 12 is not limited to an indwelling needle for administering infusion fluid.
  • the catheter assembly 12 includes a catheter member 16, a needle member 18, a guide wire 20, and a wire operating section 22.
  • Catheter member 16 has a hollow catheter shaft 24 and a catheter hub 26 .
  • the catheter shaft 24 has flexibility.
  • the catheter shaft 24 is a tubular member that can be continuously inserted into the blood vessel 202 (vein or artery) of the biological site 200 (see FIG. 6).
  • Catheter shaft 24 has a lumen 28 extending axially along its entire length. The lumen 28 of the catheter shaft 24 communicates with an opening 30 at the distal end of the catheter shaft 24 .
  • the constituent material of the catheter shaft 24 is not particularly limited, but transparent or translucent resin materials, particularly soft resin materials, are suitable, such as polytetrafluoroethylene (PTFE), ethylene tetrafluoroethylene, etc.
  • Fluororesins such as fluoroethylene copolymer (ETFE) and perfluoroalkoxyfluororesin (PFA), olefin resins such as polyethylene and polypropylene, or mixtures thereof, polyurethane, polyester, polyamide, polyether nylon resin, and olefin resins. Examples include mixtures with ethylene-vinyl acetate copolymers.
  • the catheter hub 26 is provided at the proximal end of the catheter shaft 24.
  • Catheter hub 26 is formed into a cylindrical shape.
  • Catheter hub 26 is preferably constructed of a harder material than catheter shaft 24.
  • the material constituting the catheter hub 26 is not particularly limited, but includes thermoplastic materials such as polypropylene, polycarbonate, polyamide, polysulfone, polyarylate, methacrylate-butylene-styrene copolymer, polyurethane, acrylic resin, and ABS resin. Resin can be suitably used.
  • the needle member 18 includes a hollow needle body 32 and a needle hub 34.
  • the needle body 32 is a tubular member having a rigidity that allows it to puncture the living body part 200 (see FIG. 6).
  • the needle body 32 has a lumen 36 that extends along its entire length in the axial direction. The needle body 32 is inserted into the lumen 28 of the catheter shaft 24 and the lumen 27 of the catheter hub 26 in the initial state (assembled state) of the catheter assembly 12 (see FIGS. 1 and 3A).
  • the constituent material of the needle body 32 examples include metal materials such as stainless steel, aluminum, aluminum alloy, titanium, and titanium alloy.
  • the needle body 32 does not transmit the light L1 from the visualization device 14 and reflects it (see FIG. 1).
  • the needle body 32 is formed sufficiently longer than the catheter shaft 24.
  • the needle body 32 protrudes from the opening 30 of the catheter shaft 24 in the initial state of the catheter assembly 12.
  • the tip of the needle body 32 has a blade surface 40 that is inclined with respect to the axis of the needle body 32.
  • a tip opening 42 communicating with the inner cavity 36 of the needle body 32 is formed in the blade surface 40 .
  • the distal opening 42 includes an opening center portion 44 and an opening base end portion 46.
  • the opening center portion 44 is located at the center of the tip opening 42 in the axial direction of the needle body 32 .
  • the opening base end portion 46 is located at the base end portion of the tip opening 42 in the axial direction of the needle body 32 . In other words, the opening base end portion 46 is adjacent to the jaw portion 48 of the blade surface 40 in the distal direction.
  • the needle hub 34 has a needle fixing part 50, a cylinder part 52, a movement restricting part 54, and a port part 56.
  • Needle fixing portion 50 forms the tip of needle hub 34 .
  • a proximal end portion of the needle body 32 is fixed to the needle fixing portion 50 .
  • the cylindrical portion 52 extends along the direction in which the needle body 32 extends.
  • the distal end of the cylindrical portion 52 is connected to the needle fixing portion 50.
  • the cylindrical portion 52 has a lumen 58 that communicates with the lumen 36 of the needle body 32 and opens at the proximal end of the needle hub 34 .
  • a later-described piston 70 of the wire operating section 22 is inserted into the inner cavity 58 of the cylindrical section 52.
  • the space in the lumen 58 of the cylindrical portion 52 in the distal direction from the piston 70 is a flashback chamber 60 in which blood flows backward when the blade surface 40 of the needle body 32 enters the blood vessel 202 (see FIG. 6).
  • the cylindrical portion 52 functions as an operating portion of the catheter assembly 12.
  • the movement restriction portion 54 restricts movement of the piston 70 in the proximal direction.
  • the movement restricting portion 54 is two protrusions 62 that protrude radially inward from the inner circumferential surface of the cylindrical portion 52 .
  • the two protrusions 62 are positioned to face each other.
  • the projection 62 has a semicircular longitudinal cross section along the axial direction of the cylindrical portion 52 .
  • the position, size, and shape of the protrusion 62 can be set as appropriate.
  • the movement restricting portion 54 may be one or more protrusions 62 .
  • the movement restricting portion 54 may be a single protrusion 62 extending in an annular shape on the inner circumferential surface of the cylindrical portion 52 .
  • the movement regulating section 54 may adopt any suitable configuration as long as it is capable of regulating the movement of the piston 70 in the proximal direction.
  • the port portion 56 is provided at the tip of the cylindrical portion 52.
  • a filter section 64 is provided in the port section 56 .
  • the filter section 64 allows the air present in the chamber 60 to flow to the outside of the cylindrical section 52, while preventing air from flowing into the chamber 60 from the outside of the cylindrical section 52. Furthermore, the filter section 64 prevents blood circulation.
  • the guide wire 20 extends from the distal end of the piston 70 in the distal direction.
  • the guide wire 20 is a member for guiding the catheter shaft 24 into the blood vessel 202.
  • the core material of the guide wire 20 is made of, for example, a superelastic alloy.
  • the surface of the guide wire 20 is coated with a hydrophilic polymer.
  • the distal end of the guide wire 20 has a flexible structure (eg, a coil, etc.) to increase safety to the blood vessel 202.
  • the tip of the guide wire 20 is formed into a round shape (for example, a hemispherical shape).
  • a light emitting section 66 that emits near-infrared light L2 is provided at the distal end of the guide wire 20.
  • the near-infrared light L2 emitted by the light emitting unit 66 is received by the visualization device 14 and displayed on the received light image 82 (see FIG. 1).
  • the length of the light emitting part 66 along the extending direction of the guide wire 20 is set to, for example, 0.3 mm or more and 0.5 mm or less. When the length of the light emitting section 66 is 0.3 mm or more, the light emitting section 66 becomes easily visible in the received light image 82. However, the length of the light emitting section 66 can be set as appropriate.
  • the light emitting part 66 is located at the tip opening 42 of the needle body 32 in a plan view when the blade surface 40 is viewed from a direction perpendicular to the axis of the needle body 32 (in a plan view in FIG. 3B). They are in overlapping positions. Specifically, the light emitting portion 66 is located in the proximal direction with respect to the opening center portion 44 of the distal opening 42 in the initial state of the catheter assembly 12 . In other words, the light emitting portion 66 is located at a position overlapping the opening base end portion 46 of the distal opening 42 in the plan view of FIG. 3B. In this case, whether the entire blade surface 40 has been inserted into the blood vessel 202 can be easily determined from the received light image 82.
  • the distal end of the light emitting part 66 is located in the proximal direction from the opening center 44 of the distal opening 42 in the initial state of the catheter assembly 12.
  • the entire light emitting part 66 is located in the inner cavity 36 of the needle body 32. That is, the light emitting part 66 does not protrude from the tip opening 42 to the outside of the needle body 32. Thereby, it is possible to suppress an increase in puncturing resistance caused by the light emitting section 66.
  • the size, shape, and position of the light emitting section 66 can be set as appropriate.
  • the light emitting part 66 may extend in the axial direction of the needle body 32 so as to overlap the range from the opening center 44 of the distal opening 42 to the opening base end 46 in the plan view of FIG. 3B.
  • the light emitting portion 66 may be located in the distal direction from the opening center portion 44 of the distal opening 42 in an initial state. It is preferable that the light emitting part 66 is positioned so as to overlap at least the base end part 46 of the distal end opening 42 in the plan view of FIG. 3B. However, the light emitting portion 66 may be located so as not to overlap the opening base end portion 46 of the distal opening 42 in the plan view of FIG. 3B.
  • the peak wavelength of the near-infrared light L2 emitted by the light emitting section 66 is within a wavelength range that is easily absorbed by hemoglobin in blood and easily transmitted through the skin 204.
  • the skin 204 easily transmits wavelengths of 700 nm or more and 1000 nm or less.
  • reduced hemoglobin in blood flowing through veins easily absorbs light with a wavelength around 660 nm.
  • oxygenated hemoglobin in blood flowing through arteries tends to absorb light with a wavelength around 940 nm.
  • the peak wavelength of the near-infrared light L2 emitted by the light emitting section 66 is preferably in the range of 700 nm or more and 1000 nm or less. Furthermore, in the case of the catheter assembly 12 (catheter for intravenous insertion) used to puncture a vein, the peak wavelength of the near-infrared light L2 emitted by the light emitting part 66 is preferably in the range of 700 nm or more and 800 nm or less. , more preferably in the range of 700 nm or more and 750 nm or less.
  • the peak wavelength of the near-infrared light L2 emitted by the light emitting section 66 is preferably in the range of 800 nm or more and 1000 nm or less. , more preferably in the range of 850 nm or more and 950 nm or less, and even more preferably around 940 nm.
  • the light emitting part 66 is formed by applying a light emitting material to the tip of the guide wire 20. Such a light emitting part 66 can be easily obtained, for example, by dipping the tip of the guide wire 20 in a liquid light emitting material.
  • the luminescent material used is a fluorescent material (near-infrared fluorescent dye) that emits near-infrared light L2 when irradiated with light L1 in the near-infrared region emitted by the visualization device 14.
  • the thickness of the fluorescent material is set to, for example, about 3 ⁇ m. Examples of such fluorescent materials include those described in JP-A No. 2014-136115.
  • the luminescent material As the luminescent material, a phosphorescent material that emits near-infrared light L2 may be used.
  • the light emitting part 66 is made ready to emit light by irradiating the light emitting part 66 with light in advance (before performing a blood vessel puncture procedure using the blood vessel puncture system 10). be able to.
  • the wire operating section 22 is a member for operating the guide wire 20 along the axial direction.
  • the wire operating section 22 has a piston 70 and a pusher 72.
  • the piston 70 is disposed in the inner cavity 58 of the cylindrical portion 52.
  • the piston 70 slides in the inner cavity 58 of the cylindrical portion 52 along the axial direction of the cylindrical portion 52 .
  • the tip of the pusher 72 is attached to the base end surface of the piston 70.
  • a base end portion of the pusher 72 protrudes from the base end of the cylindrical portion 52.
  • the visualization device 14 includes an irradiation section 74, a light receiving section 76, and an image display section 78.
  • the irradiating section 74 and the light receiving section 76 are located above the living body part 200 (in the direction in which the tip opening 42 of the needle body 32 is facing) (see FIG. 4).
  • the irradiation unit 74 irradiates the living body part 200 (object to be visualized) into which the catheter assembly 12 is punctured with light L1.
  • the irradiation unit 74 includes a light source 80 that emits light L1 in the near-infrared region.
  • the light L1 emitted by the light source 80 preferably has a wavelength in the range of 700 nm or more and 2500 nm or less, more preferably has a wavelength in the range of 700 nm or more and 1400 nm or less, and preferably has a wavelength in the range of 780 nm or more and 1050 nm or less. is even more preferable.
  • Such near-infrared light L2 is absorbed by hemoglobin of blood.
  • the light receiving unit 76 is a camera (imaging unit) that receives the reflected light reflected by the biological part 200, the needle body 32, etc., out of the light L1 emitted by the light source 80, and the near-infrared light L2 emitted by the light emitting unit 66. .
  • a CCD camera or the like is used as the light receiving section 76.
  • the light receiving unit 76 creates a received light image 82 based on the reflected light and the near-infrared light L2.
  • the image display section 78 displays the received light image 82.
  • the blade surface 40 projects distally from the opening 30 of the catheter shaft 24 in an upwardly facing position.
  • the user sets up the visualization device 14. Specifically, as shown in FIG. 4, the irradiating section 74 and the light receiving section 76 are arranged above the biological part 200 (for example, the forearm of a human body) that is the puncture target. Then, the irradiation unit 74 irradiates the living body part 200 with the light L1, and the living body part 200 is punctured with the distal end of the catheter assembly 12. Note that in FIG. 4, the blade surface 40 does not enter the blood vessel 202.
  • the light L1 emitted by the irradiation section 74 is reflected by the living body part 200 and the needle body 32, and is irradiated to the light emitting section 66.
  • the light L1 in the near-infrared region is absorbed by the hemoglobin of blood flowing within the blood vessel 202 of the living body part 200.
  • the light emitting unit 66 emits near-infrared light L2 when irradiated with the light L1.
  • the light receiving section 76 receives the light (reflected light) reflected by the living body part 200 and the needle body 32 out of the light L1 and the near-infrared light L2 emitted by the light emitting section 66 to create a received light image 82.
  • the light-receiving image 82 created by the light-receiving section 76 is displayed on the image display section 78.
  • the skin 204, blood vessels 202, needle body 32, and light emitting section 66 are displayed in the light reception image 82. Specifically, in the light reception image 82, the skin 204 and the light emitting part 66 are displayed brighter than the needle body 32.
  • the catheter assembly 12 when the catheter assembly 12 is pushed forward, the blade surface 40 of the needle body 32 is inserted into the blood vessel 202 and the light emitting part 66 is positioned within the blood vessel 202.
  • the light L1 is absorbed by the hemoglobin of the blood flowing in the blood vessel 202, so that the light emitting section 66 is no longer irradiated with the light L1.
  • the appearance of the light emitting section 66 changes in the light reception image 82 (the light emitting section 66 becomes darker).
  • the brightness of the light emitting section 66 is approximately the same as the brightness of the blood vessel 202. Therefore, the user can immediately know from the light reception image 82 that the blade surface 40 has entered the blood vessel 202. In other words, the user can know from the received light image 82 that the entire blade surface 40 has been inserted into the blood vessel 202.
  • the user causes the guide wire 20 to protrude from the distal opening 42 of the needle body 32 by moving the wire operating section 22 in the distal direction with respect to the needle hub 34.
  • the catheter shaft 24 is inserted into the blood vessel 202 while following the guide wire 20.
  • the catheter shaft 24 is placed in the blood vessel 202.
  • an infusion fluid is administered into the blood vessel 202 via the catheter member 16.
  • This embodiment has the following effects.
  • the light emitting portion 66 in the initial state of the catheter assembly 12, the light emitting portion 66 is located at a position overlapping the tip opening 42 when the blade surface 40 is viewed from a direction perpendicular to the axis of the needle body 32.
  • the near-infrared light L2 emitted by the light-emitting section 66 is guided to the outside of the needle body 32 through the tip opening 42, so it can be visualized by the received light image 82 created based on the near-infrared light L2.
  • the near-infrared light L2 is absorbed by hemoglobin of blood flowing in the blood vessel 202. Therefore, the appearance of the light emitting part 66 in the received light image 82 changes before and after the blade surface 40 enters the blood vessel 202. Therefore, the user can immediately know that the blade surface 40 has entered the blood vessel 202.
  • the needle member 18 has a needle hub 34 provided at the proximal end of the needle body 32.
  • Needle hub 34 includes a movement restriction portion 54 that restricts movement of guide wire 20 in the proximal direction relative to needle body 32 when catheter assembly 12 is in an initial state.
  • the distal end of the light emitting portion 66 can be prevented from being displaced in the proximal direction from the proximal end of the distal end opening 42.
  • the tip opening 42 includes an opening center portion 44 located at the center of the needle body 32 in the axial direction.
  • the light emitting portion 66 is located more proximally than the opening center portion 44.
  • the tip opening 42 includes an opening base end 46 located at the base end of the needle body 32 in the axial direction.
  • the light emitting portion 66 is positioned so as to overlap the open proximal end portion 46 in plan view.
  • the light emitting section 66 includes a fluorescent material that emits near-infrared light L2 when irradiated with light L1.
  • the configuration of the light emitting section 66 can be simplified.
  • the blood vessel puncture system 10 includes a catheter assembly 12, an irradiation section 74, a light receiving section 76, and an image display section 78.
  • the irradiation unit 74 irradiates the distal end of the catheter assembly 12 punctured into the living body part 200 with light L1 in the near-infrared region.
  • the light receiving section 76 receives the reflected light reflected by the catheter assembly 12 out of the light L1 and the near-infrared light L2 emitted by the light emitting section 66 to create a received light image 82.
  • the image display section 78 displays the received light image 82.
  • the blood vessel puncture procedure can be performed efficiently while viewing the light-receiving image 82.
  • the catheter assembly 12a includes a catheter member 16, a needle member 18a, a guide wire 20, and a wire operating section 22a.
  • the needle member 18a has a needle body 32 and a needle hub 34a.
  • the needle hub 34a includes a needle fixing part 50, a cylinder part 52, a wire introduction part 90, and a movement regulating part 54a.
  • the cylindrical portion 52 is not provided with the port portion 56 described above.
  • the lumen 58 of the cylindrical portion 52 is a flashback chamber 60 in which blood flows backward when the blade surface 40 of the needle body 32 enters the blood vessel 202.
  • a filter portion 91 is provided at the base end portion of the cylindrical portion 52 .
  • the filter section 91 is configured similarly to the filter section 64 described above.
  • the wire introducing section 90 includes a connecting section 92 and a supporting section 94.
  • the connecting portion 92 is provided in the cylindrical portion 52.
  • the connecting portion 92 has a lumen 96 that communicates with the lumen 58 of the cylindrical portion 52 .
  • the connecting portion 92 is provided with a slit valve 98 through which the guide wire 20 is inserted.
  • the slit valve 98 prevents blood that has flowed back into the chamber 60 from leaking out from the lumen 96 of the wire introduction section 90.
  • the support portion 94 extends from the connecting portion 92 toward the proximal end so as to be inclined radially outward.
  • the movement restriction section 54a includes a restriction wall 100 provided at the extending end of the support section 94.
  • the regulating wall 100 regulates the movement of the wire operating section 22a in the direction away from the slit valve 98.
  • the wire operation section 22a includes a base section 102 and a handle section 104.
  • the base portion 102 is attached to the proximal end of the guide wire 20.
  • the base portion 102 is in contact with the regulating wall 100 in the initial state of the catheter assembly 12a.
  • the handle portion 104 protrudes from the base portion 102.
  • the handle portion 104 has a size and shape that allows the user to easily grip it with their fingers.
  • the same structure as the catheter assembly 12 described above produces the same effects. Further, according to this modification, since the base portion 102 is in contact with the regulating wall 100 in the initial state of the catheter assembly 12a, the guide wire 20 does not retreat with respect to the needle member 18a. Therefore, in the initial state of the catheter assembly 12a, the distal end of the light emitting part 66 can be prevented from being displaced in the proximal direction from the proximal end of the distal end opening 42. Further, the user can cause the guide wire 20 to protrude from the tip opening 42 of the needle body 32 by pinching the handle portion 104 and moving it toward the slit valve 98.
  • the movement restricting portion is configured to restrict movement of the guide wire in the proximal direction with respect to the needle body by bringing the guide wire and the needle into contact with each other in the initial state of the catheter assembly. may be configured.
  • This embodiment discloses the following contents.
  • the above embodiment includes a catheter member (16) having a hollow catheter shaft (24), and a needle member (18, 18a) having a hollow needle body (32) inserted into the lumen (28) of the catheter shaft. and a guide wire (20) inserted into the lumen (36) of the needle body, and a blade surface (40) at the distal end of the needle body has a tip that communicates with the lumen of the needle body.
  • a catheter assembly (12, 12a) in which an opening (42) is formed, a light emitting part (66) that emits near-infrared light (L2) is provided at the distal end of the guide wire, and the light emitting part (66) emits near-infrared light (L2). discloses a catheter assembly that is positioned in an initial state so as to overlap the tip opening in a plan view when the blade surface is viewed from a direction perpendicular to the axis of the needle body.
  • the needle member has a needle hub (34, 34a) provided at a proximal end of the needle body, and in the initial state, the catheter assembly A movement regulating portion (54, 54a) may be provided that regulates movement of the needle body in the proximal direction.
  • the tip opening includes an opening center portion (44) located at the center of the needle body in the axial direction, and the light emitting portion is lower than the opening center portion in the initial state. It may be located towards the end.
  • the tip opening includes an opening proximal end (46) located at the proximal end in the axial direction of the needle body, and the light emitting part, in the initial state, in the plan view: It may be located so as to overlap the opening base end.
  • the light emitting section may include a fluorescent material that emits the near-infrared light when irradiated with light.
  • the above-mentioned embodiment includes the above-mentioned catheter assembly, an irradiation unit (74) that irradiates the distal end of the catheter assembly punctured into a living body part (200) with light (L1) in the near-infrared region, and the light a light receiving section (76) that receives reflected light reflected by the biological site and the catheter assembly and the near-infrared light emitted by the light emitting section to create a light receiving image (82);
  • a blood vessel puncture system (10) is disclosed that includes an image display section (78) that displays an image.

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PCT/JP2023/008210 2022-03-30 2023-03-06 カテーテル組立体及び血管穿刺システム Ceased WO2023189225A1 (ja)

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WO2023199191A1 (en) * 2022-04-10 2023-10-19 Mor Research Applications Ltd. Ophthalmic tool for ab-interno removal of ophthalmic tissue and method therefor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010512803A (ja) * 2006-07-06 2010-04-30 バスキュラー・パスウェイズ・インコーポレイテッド 静脈カテーテル挿入装置及び使用方法
JP2014136114A (ja) * 2013-01-18 2014-07-28 Terumo Corp 動脈用シースイントロデューサ
JP2014136115A (ja) * 2013-01-18 2014-07-28 Terumo Corp 留置針
US20150314105A1 (en) * 2012-08-21 2015-11-05 Optomeditech Oy Intravascular Catheter Assembly
US20160256101A1 (en) * 2013-10-14 2016-09-08 Avraham Aharoni Device and System Device and System for Imaging Veins

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010512803A (ja) * 2006-07-06 2010-04-30 バスキュラー・パスウェイズ・インコーポレイテッド 静脈カテーテル挿入装置及び使用方法
US20150314105A1 (en) * 2012-08-21 2015-11-05 Optomeditech Oy Intravascular Catheter Assembly
JP2014136114A (ja) * 2013-01-18 2014-07-28 Terumo Corp 動脈用シースイントロデューサ
JP2014136115A (ja) * 2013-01-18 2014-07-28 Terumo Corp 留置針
US20160256101A1 (en) * 2013-10-14 2016-09-08 Avraham Aharoni Device and System Device and System for Imaging Veins

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