WO2023095743A1 - 二層コイル構造体 - Google Patents

二層コイル構造体 Download PDF

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Publication number
WO2023095743A1
WO2023095743A1 PCT/JP2022/043006 JP2022043006W WO2023095743A1 WO 2023095743 A1 WO2023095743 A1 WO 2023095743A1 JP 2022043006 W JP2022043006 W JP 2022043006W WO 2023095743 A1 WO2023095743 A1 WO 2023095743A1
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WO
WIPO (PCT)
Prior art keywords
coil
diameter
inner coil
torque
outer coil
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/JP2022/043006
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English (en)
French (fr)
Japanese (ja)
Inventor
貴弥 橋本
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.)
Asahi Intecc Co Ltd
Original Assignee
Asahi Intecc Co Ltd
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 Asahi Intecc Co Ltd filed Critical Asahi Intecc Co Ltd
Priority to EP22898526.3A priority Critical patent/EP4437970A4/en
Priority to CN202280076910.0A priority patent/CN118302116A/zh
Publication of WO2023095743A1 publication Critical patent/WO2023095743A1/ja
Priority to US18/667,020 priority patent/US20240301621A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
    • D07B1/0673—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a rope configuration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C1/00—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing
    • F16C1/02—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing for conveying rotary movements
    • 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
    • A61M25/0102—Insertion or introduction using an inner stiffening member, e.g. stylet or push-rod
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C1/00—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing
    • F16C1/10—Means for transmitting linear movement in a flexible sheathing, e.g. "Bowden-mechanisms"
    • F16C1/20—Construction of flexible members moved to and fro in the sheathing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/32—Surgical cutting instruments
    • A61B17/320016—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes
    • A61B17/32002—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes with continuously rotating, oscillating or reciprocating cutting instruments
    • A61B2017/320032—Details of the rotating or oscillating shaft, e.g. using a flexible shaft
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/10—Rope or cable structures
    • D07B2201/1028—Rope or cable structures characterised by the number of strands
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/10—Rope or cable structures
    • D07B2201/104—Rope or cable structures twisted
    • D07B2201/1044—Rope or cable structures twisted characterised by a value or range of the pitch parameter given
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2001—Wires or filaments
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2015—Strands
    • D07B2201/2022—Strands coreless

Definitions

  • the present invention relates to a two-layer coil structure.
  • Patent Literature 1 discloses a drive shaft 10 that is rotatably built in a catheter sheath 2 of an ultrasound catheter 1 and that is composed of a multi-layered coherent coil made of a metal wire such as stainless steel.
  • US Pat. No. 5,900,001 discloses a hollow core coil having inner and outer coils 40 and 42 formed from wound Nitinol disposed within a catheter sheath 18 of an acoustic imaging (ultrasound imaging) catheter 10.
  • US Pat. A drive shaft 16 is disclosed.
  • Such a double-layered coil structure is rotationally driven by a drive source such as a motor connected to the proximal side, but during operation of the catheter, the double-layered coil structure stacks inside the catheter, causing the coil portion to move.
  • a drive source such as a motor connected to the proximal side
  • the double-layered coil structure stacks inside the catheter, causing the coil portion to move.
  • the rotation resistance of the coil increases, there is a problem that a kink is likely to occur in the coil portion.
  • a kinked double-layer coil structure may not be able to transmit rotation well, and the kinking may cause the lead wire running inside the double-layer coil structure to break, and the catheter itself may not function. It may disappear.
  • the present invention has been made in view of these points, and an object of the present invention is to provide a two-layer coil structure that has high torsional rigidity and suppresses the occurrence of kinks due to rotational resistance.
  • the present invention provides an inner coil formed by spirally winding a metal wire, and an inner coil disposed in close contact with the outer circumference of the inner coil, and a metal wire wound spirally. and an outer coil formed thereon, wherein the winding direction of the inner coil is opposite to the winding direction of the outer coil, and the double-layer coil structure is formed around its circumference.
  • the inner coil is twisted in the direction in which the diameter of the inner coil widens, the amount of change in the diameter of the inner coil is smaller than the amount of change in the diameter of the outer coil.
  • the amount of change d1 in the diameter of the inner coil when the inner coil is twisted 360° in the circumferential direction and in the direction in which the diameter of the inner coil expands with respect to the length of one unit; , the amount of change d 2 in the diameter of the outer coil when the outer coil is twisted 360° in the circumferential direction and in the direction in which the diameter of the outer coil shrinks, and ⁇ 4.5 ⁇ d 1 /d 2 ⁇ 1 Provide a two-layer coil structure that satisfies the relationship of .6 (Invention 1).
  • the two-layer coil structure is twisted in the circumferential direction and in the direction in which the diameter of the inner coil increases.
  • the diameter of the inner coil increases while the diameter of the outer coil decreases, and as a result, the outer coil and the inner coil are pressed against each other.
  • the amount of change in the diameter of the inner coil is smaller than the amount of change in the diameter of the outer coil, the outer coil will strongly tighten the inner coil, and the layers of the outer coil and the inner coil will be in close contact with each other.
  • each of the inner coil and the outer coil has a length of 1596 mm as one unit, and the inner side when the inner coil is twisted 360° in the circumferential direction and the direction in which the diameter of the inner coil expands with respect to the unit length
  • the amount of change d 1 in the diameter of the coil and the amount d 2 of change in the diameter of the outer coil when the outer coil is twisted 360° in the circumferential direction and in the direction in which the diameter of the outer coil shrinks are ⁇ 4.5 ⁇ d 1.
  • the inner coil is formed by spirally winding 2 or more and 18 or less metal wires (invention 2).
  • FIG. 4 is an explanatory diagram showing the structure of a torque coil according to one embodiment of the present invention. It is explanatory drawing which shows the structure of the shaft main body which concerns on the same embodiment.
  • 5 is a graph showing the relationship between the ratio of the amount of change in the radial direction of the inner coil and the outer coil in the torque coils of the example and the comparative example, and the maximum torque force and torsional rigidity of the torque coil.
  • FIG. 1 is an explanatory diagram showing the overall structure of a torque coil 10 according to this embodiment
  • FIG. 2 is an explanatory diagram showing the structure of a shaft body 1 in the torque coil 10.
  • the present invention is not limited only to the embodiments described below, and the embodiments are merely exemplifications described to explain the technical features of the present invention.
  • the shapes and dimensions shown in each drawing are shown only for the purpose of facilitating the understanding of the contents of the present invention, and do not reflect the actual shapes and dimensions correctly.
  • distal end side means the direction along the axial direction of the shaft body 1 that constitutes the torque coil 10, and the direction in which the torque coil 10 advances toward the treatment site.
  • Base end side means a direction along the axial direction of the shaft body 1 constituting the torque coil 10 and opposite to the tip end side.
  • distal end refers to the distal end of any member or site
  • base end refers to the proximal end of any member or site.
  • distal end refers to a region of any member or site that includes the distal end and extends from the distal end toward the proximal side to the middle of the member, etc.
  • proximal end refers to any part. In a member or region, it refers to a portion that includes the proximal end and extends from the proximal end toward the distal side to the middle of the member or the like.
  • the left side of the drawing is the "distal side” that is inserted into the body while being passed through an ultrasonic catheter or the like
  • the right side of the drawing is the “base side” that is connected to a driving source such as a motor. It is the end side.
  • the torque coil 10 includes a long shaft body 1, a housing 2 attached to the distal end of the shaft body 1, and a connector 3 attached to the proximal end of the shaft body 1.
  • the shaft body 1 in the present embodiment includes an inner coil 11 formed by spirally winding a metal wire 111, and a metal wire 111 disposed in close contact with the outer periphery of the inner coil 11.
  • An outer coil 12 formed by spirally winding 121 has a hollow two-layer coil structure.
  • a housing 2 is attached to the tip of the shaft body 1 of the torque coil 10 .
  • the housing 2 contains a transducer (not shown) for ultrasound imaging, which is secured by known bonding techniques such as epoxy resins and adhesives.
  • a housing 2 is attached to the tip of the shaft body 1 .
  • a coil member made of a material different from that of the shaft body 1 may be joined, or a connecting member such as a medical clip may be joined to connect to an object to be manipulated.
  • the tip portion of the shaft body 1 may be brazed with a brazing material and cut into a desired shape.
  • a connector 3 for connecting to a drive source 4 such as a motor for rotationally driving the torque coil 10 is attached to the proximal end of the shaft body 1 of the torque coil 10 by a known fixing technique such as epoxy resin or adhesive. It is
  • the present invention also provides a medical device shaft in which a torque coil and a drive source are connected by a connector, and a medical device including the shaft.
  • the shaft is particularly suitable for medical equipment equipped with a motor, for example, a shaft equipped with an ultrasound transducer at its tip for use in intravascular ultrasound (IVUS), or a shaft for extracting substances from a patient's body lumen. It can be suitably used as a shaft for an internal recovery mechanism used for removal.
  • the torque coil of the present invention is particularly effective in shafts used in intravascular ultrasound (IVUS) that rotate at 1000 rpm or more, more preferably 1500 rpm or more.
  • the outer diameter of the inner coil 11 is set in the range of 0.24-0.79 mm, preferably in the range of 0.3-0.5 mm.
  • the inner diameter of the inner coil 11 is set in the range of 0.17 to 0.57 mm, preferably in the range of 0.2 to 0.4 mm.
  • the axial length of the inner coil 11 is set within a range of 1.0 to 3.0 m.
  • the material of the metal wire 111 forming the inner coil 11 is not particularly limited, for example, austenitic stainless steel such as SUS304 and SUS316 is used.
  • the inner coil 11 is formed by spirally winding a plurality of metal wires 111, and is formed so that there is no gap between adjacent metal wires 111 in the axial direction of the inner coil 11. .
  • the inner coil 11 is formed by spirally winding 2 or more and 18 or less metal wires, and the diameter of each metal wire 111 is in the range of 0.03 to 0.11 mm. is set.
  • the diameter of each metal wire 111 is preferably in the range of 0.04 to 0.08 mm. If the inner coil 11 is a single-filament coil, there is a risk that the rotational performance of the torque coil 10 will be degraded.
  • the outer diameter of the outer coil 12 is set in the range of 0.3-1.0 mm, preferably in the range of 0.4-0.6 mm.
  • the inner diameter of the outer coil 12 is set in the range of 0.24-0.79 mm, preferably in the range of 0.3-0.5 mm. Since the outer coil 12 is arranged in close contact with the outer circumference of the inner coil 11 , the inner diameter of the outer coil 12 is set substantially equal to the outer diameter of the inner coil 11 .
  • the axial length of the outer coil 12 is the same as that of the inner coil 11, and is set within a range of 1.0 to 3.0 m, for example.
  • metal wire 121 forming the outer coil 12 is not particularly limited, for example, austenitic stainless steel such as SUS304 and SUS316 is used.
  • Metal wire 111 forming inner coil 11 and metal wire 121 forming outer coil 12 are preferably made of the same material.
  • the outer coil 12 is formed by spirally winding a plurality of metal wires 121, and is formed so that there is no gap between adjacent metal wires 121 in the axial direction of the outer coil 12. .
  • the outer coil 12 is formed by spirally winding 2 or more and 18 or less metal wires, and the diameter of each metal wire 121 is in the range of 0.03 to 0.50 mm. is set.
  • the diameter of each metal wire 121 is preferably in the range of 0.03 to 0.08 mm.
  • both the metal wire 111 forming the inner coil 11 and the metal wire 121 forming the outer coil 12 are round wires having a substantially circular cross section, but they are not particularly limited to this. Instead, it may be a round wire with an elliptical cross section, or a flat wire with a substantially rectangular cross section.
  • the outer coil 12 is arranged on the outer circumference of the inner coil 11 so that the winding direction of the inner coil 11 and the winding direction of the outer coil 12 are opposite to each other.
  • the shaft body 1 is twisted in its circumferential direction and in the direction in which the diameter of the inner coil 11 increases, the diameter of the inner coil 11 increases and the diameter of the outer coil 12 decreases.
  • the amount of change in the diameter of the outer coil 12 is larger than the amount of change in the diameter of the inner coil 11. configured to grow.
  • the winding angle ⁇ of the inner coil 11 in the longitudinal cross-sectional direction and the winding angle ⁇ of the outer coil 12 in the longitudinal cross-sectional direction are different from each other.
  • the winding angle ⁇ in the longitudinal cross-sectional direction is set to be larger than the winding angle ⁇ in the longitudinal cross-sectional direction of the outer coil 12 .
  • the winding angle ⁇ of the inner coil 11 is larger than the winding angle ⁇ of the outer coil 12 (that is, the twist angle of the inner coil 11 is higher than the twist angle of the outer coil 12).
  • the amount of change in the diameter of the outer coil 12 becomes larger than the amount of change in the diameter of the inner coil 11. .
  • the relationship between the winding angle ⁇ of the inner coil 11 in the longitudinal cross-sectional direction and the winding angle ⁇ of the outer coil 12 in the longitudinal cross-sectional direction is determined by the metal wires 111 and 121 forming the inner coil 11 and the outer coil 12, respectively. It is determined by a combination of wire diameter and thread number settings. For example, if the diameter of the wire forming the coil is fixed, the more the number of coil threads, the smaller the winding angle in the longitudinal cross-sectional direction of the coil. The winding angle in the longitudinal cross-sectional direction increases.
  • the torque coil 10 since the winding direction of the inner coil 11 and the winding direction of the outer coil 12 are opposite, the torque coil 10 is rotated in the circumferential direction and in the direction in which the diameter of the inner coil 11 widens.
  • the diameter of the inner coil 11 expands while the diameter of the outer coil 12 contracts, and as a result, the outer coil 12 and the inner coil 11 are pressed against each other.
  • the outer coil 12 will strongly tighten the inner coil 11 , resulting in an interlayer gap between the outer coil 12 and the inner coil 11 . are strongly in close contact with each other, the torsional rigidity of the torque coil 1 is increased, and the occurrence of kinks due to rotational resistance can be suppressed.
  • the present invention is not limited to the above embodiments, and various modifications are possible.
  • the shape, length, diameter, etc. of the inner coil 11 and the outer coil 12 constituting the torque coil 1 may be appropriately designed according to the purpose of use, the position of use, and the like.
  • a lead wire or the like may be inserted inside the shaft body 1, or a member other than the inner coil 11 and the outer coil 12, such as a reinforcing member or an X-ray opaque marker, may be provided in the shaft body 1. may have been
  • the inner coil which is a multi-strand coil formed by spirally winding a plurality of metal wires, and the outer circumference of the inner coil are in close contact with each other.
  • a plurality of test torque coils are produced, each comprising an outer coil that is a multi-strand coil formed by spirally winding a plurality of metal wires, and a maximum torque force and a maximum torque force are measured using a motor and a torque sensor. Torsional stiffness was measured.
  • test torque coils were produced by changing the wire diameter and number of threads of the inner and outer coils. All test torque coils were made to have an inner diameter of 0.32 mm and a length of 1606 mm. Table 1 shows the structures of the inner coil and the outer coil of the manufactured test torque coil.
  • Examples 1 to 3 and Comparative Examples 1 to 3 in Table 1 the wire diameters of the inner and outer coils are changed while the number of threads of the inner and outer coils is fixed at 8.
  • Examples 4 to 7 and Comparative Examples 4 to 7 in Table 1 the wire diameters of the inner and outer coils were fixed at 0.06 mm, and the numbers of threads of the inner and outer coils were changed.
  • the pitch in Table 1 means the length of one period in the axial direction of the coil around which the wire is wound.
  • the length of the actually manufactured test torque coil was 1606 mm
  • the theoretical change amount d1 in the inner coil diameter and the theoretical change amount d2 in the outer coil diameter were calculated for each coil.
  • the length of the test torque was 1596 mm. Both ends of the coil will be attached to the motor and torque sensor, but since 5 mm on each end is chucked to the connector for attaching to the motor and torque sensor, the maximum torque force and torsional rigidity of the test torque coil will be measured. This is because the length of is 1596 mm.
  • the ratio (d 1 /d 2 ) of the change amount d 2 of was calculated as follows. (1)
  • the PCD of each of the inner coil and the outer coil was determined.
  • PCD is a virtual circle centered at the center of the coil when the coil is viewed in cross section, and is the diameter of the virtual circle passing through the radial center of each wire forming the coil, It is a value calculated by "the inner diameter of the coil + the radial length of the wire".
  • the amount of change d2 in the diameter of the outer coil was obtained by subtracting the "PCD before twisting of the outer coil” from the "PCD after twisting in the radially contracting direction”. (7) Using them, the ratio ( d1 / d2 ) of the variation d1 in the diameter of the inner coil and the variation d2 in the diameter of the outer coil was determined.
  • the twist angle was set to 360°, but when the length of the inner coil and the outer coil is shorter than 1596 mm, the above d 1 /d 2 is the twist angle of “360 [°] ⁇ ⁇ ( It can be obtained as the length of the inner coil and the outer coil [mm])/1596 [mm] ⁇ .
  • test torque coils of each example and comparative example thus prepared were attached to a guide wire transfer characteristic measuring instrument PT-1950GHS (manufactured by Protech Co., Ltd.) equipped with a motor and a torque sensor, and rotated in the forward direction by the motor.
  • the maximum torque force and the torsional stiffness of the test torque coils of each example and comparative example were measured.
  • the measurement was performed multiple times for each example and comparative example, and the average value was calculated as the measurement result. Table 3 shows the measurement results.
  • FIG. 3 is a graph showing the relationship between .
  • FIG. 3(a) is a graph for Examples 1-3 and Comparative Examples 1-3
  • FIG. 3(b) is a graph for Examples 4-7 and Comparative Examples 4-7.
  • the torque coils of Examples 1-7 have superior torsional rigidity compared to the torque coils of Comparative Examples 1-7.
  • the amount of change d1 in the diameter of the inner coil when the inner coil with a length of 1596 mm is twisted 360° in the circumferential direction and the direction in which the diameter of the inner coil expands and the outer coil with a length of 1596 mm in the circumferential direction
  • the change amount d 2 of the diameter of the outer coil when the outer coil is twisted 360° in the direction in which the diameter of the outer coil shrinks satisfies the relationship ⁇ 4.5 ⁇ d 1 /d 2 ⁇ 1.6
  • the torque coils of Examples 4 to 7 the torque coils in which the wire diameters of the inner coil and the outer coil are the same and the number of threads of the outer coil is greater than that of the inner coil are extremely excellent. It is understood that the torsional rigidity is exhibited and the maximum torque force is also dramatically improved.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Biophysics (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Pulmonology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Flexible Shafts (AREA)
  • Surgical Instruments (AREA)
  • Windings For Motors And Generators (AREA)
PCT/JP2022/043006 2021-11-25 2022-11-21 二層コイル構造体 Ceased WO2023095743A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP22898526.3A EP4437970A4 (en) 2021-11-25 2022-11-21 TWO-LAYER COIL STRUCTURE
CN202280076910.0A CN118302116A (zh) 2021-11-25 2022-11-21 双层线圈结构体
US18/667,020 US20240301621A1 (en) 2021-11-25 2024-05-17 Two-layer coil structure

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021-191463 2021-11-25
JP2021191463A JP2023077947A (ja) 2021-11-25 2021-11-25 二層コイル構造体

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US18/667,020 Continuation US20240301621A1 (en) 2021-11-25 2024-05-17 Two-layer coil structure

Publications (1)

Publication Number Publication Date
WO2023095743A1 true WO2023095743A1 (ja) 2023-06-01

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ID=86539443

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/043006 Ceased WO2023095743A1 (ja) 2021-11-25 2022-11-21 二層コイル構造体

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US (1) US20240301621A1 (enExample)
EP (1) EP4437970A4 (enExample)
JP (1) JP2023077947A (enExample)
CN (1) CN118302116A (enExample)
WO (1) WO2023095743A1 (enExample)

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US5211636A (en) * 1990-10-31 1993-05-18 Lake Region Manufacturing Co., Inc. Steerable infusion guide wire
JP3109415B2 (ja) * 1995-08-07 2000-11-13 トヨタ自動車株式会社 フレキシブルシャフト構造
JP2003231906A (ja) * 2002-02-12 2003-08-19 Jfe Steel Kk パイプ詰り除去装置
JP4098613B2 (ja) * 2002-12-11 2008-06-11 朝日インテック株式会社 中空撚線コイル体と、それを用いて成る医療用器具、ならびに、その製造方法
JP4553108B2 (ja) * 2004-03-31 2010-09-29 富士フイルム株式会社 内視鏡の制御ケーブル
EP2868289A1 (de) * 2013-11-01 2015-05-06 ECP Entwicklungsgesellschaft mbH Flexibler Katheter mit einer Antriebswelle
JP2017070803A (ja) * 2016-12-15 2017-04-13 朝日インテック株式会社 ガイドワイヤ
JP6665150B2 (ja) * 2017-12-20 2020-03-13 トクセン工業株式会社 中空撚線

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09504214A (ja) 1993-10-29 1997-04-28 ボストン・サイエンティフィック・コーポレーション 音響型像形成カテーテル用の駆動シャフト
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US20240301621A1 (en) 2024-09-12
EP4437970A4 (en) 2025-09-24
EP4437970A1 (en) 2024-10-02
CN118302116A (zh) 2024-07-05
JP2023077947A (ja) 2023-06-06

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