[go: up one dir, main page]

WO2025205999A1 - Dispositif médical et dispositif d'opération de déviation pour équipement médical - Google Patents

Dispositif médical et dispositif d'opération de déviation pour équipement médical

Info

Publication number
WO2025205999A1
WO2025205999A1 PCT/JP2025/012117 JP2025012117W WO2025205999A1 WO 2025205999 A1 WO2025205999 A1 WO 2025205999A1 JP 2025012117 W JP2025012117 W JP 2025012117W WO 2025205999 A1 WO2025205999 A1 WO 2025205999A1
Authority
WO
WIPO (PCT)
Prior art keywords
inner tube
outer tube
medical device
tube
deflection
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.)
Pending
Application number
PCT/JP2025/012117
Other languages
English (en)
Japanese (ja)
Inventor
辰也 嶋
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.)
Zeon Corp
Original Assignee
Zeon Corp
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 Zeon Corp filed Critical Zeon Corp
Publication of WO2025205999A1 publication Critical patent/WO2025205999A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/005—Flexible endoscopes
    • 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
    • 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
    • A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
    • A61M25/0133—Tip steering devices

Definitions

  • the present invention relates to a medical device that has an elongated member that is inserted into the body and is capable of deflecting a movable part attached to the distal end of the elongated member, and in particular to medical devices such as endoscopes and catheters that have an elongated member that is inserted into the body.
  • the present invention also relates to a deflection device for medical equipment that deflects the movable part of the medical device.
  • medical devices such as endoscopes and catheters equipped with long members suitable for insertion into the body and passing through body lumens are used.
  • the long members are generally made of thin, flexible members, and are configured to enable various treatments, examinations, etc. to be performed by inserting the long member into a body lumen from outside the body and reaching the distal end of the long member to the desired location inside the body.
  • Patent Document 1 listed below describes a technique in which the distal end of a movable catheter is configured with a nodal ring structure, multiple control wires are connected to the most distal nodal ring, and the control section pulls each of the multiple control wires to deflect the nodal ring structure in the desired direction.
  • a wire lumen must be formed in the elongated member and the movable section at its distal end to pass the control wire through. Because the wire lumen is formed, for example, in the thick part of the elongated member so as to surround the lumen (main lumen), increasing the inner diameter of the elongated member necessitates increasing the outer diameter, while maintaining the outer diameter of the elongated member necessitates decreasing the inner diameter. In other words, there is the problem that it is difficult to reduce the diameter of the elongated member or increase the inner diameter by the amount necessary to ensure a passage for the control wire. Furthermore, providing a control wire increases the number of parts and complicates the structure. Furthermore, there is the problem that if the thin-diameter control wire breaks, deflection becomes impossible.
  • the present invention was made in consideration of the above problems, and aims to provide a medical device and a deflection control device for medical equipment that can ensure a large lumen for the elongated member and achieve stable deflection control of the movable part with a simple configuration.
  • the medical device is a medical device in which a distal end portion provided with a movable portion is inserted into a body, an outer tube made of a flexible, long tubular member; an inner tube made of a flexible, long tubular member inserted into the outer tube so as to be axially slidable and rotatable relative to the outer tube, a sliding restriction portion is provided at a distal end portion of the outer tube to abut against the distal end of the inserted inner tube and restrict sliding of the inner tube toward the distal side;
  • One or more grooves recessed in a circumferential direction are formed on one side surface of the inner tube located at the movable portion,
  • the inner tube is characterized in that a connecting portion that is smoothly connected in the axial direction is provided on the other side surface of the inner tube that faces the one side surface of the inner tube.
  • the inner tube is configured to be rotatable relative to the outer tube, so the deflection direction can be appropriately controlled by rotating the inner tube relative to the outer tube and setting one side of the inner tube to face the desired direction.
  • the multiple grooves may include partial grooves that are recessed only in a portion of the circumference of the inner tube, and full-circumferential grooves that are recessed along the entire circumference of the inner tube.
  • the circumferential groove portion which is easily deformed by stress, responds quickly, allowing the movable portion to deflect smoothly.
  • the circumferential groove portions may be periodically arranged, sandwiching a predetermined number of the partial groove portions.
  • the partial groove portions and the full-circumferential groove portions can be arranged in a balanced manner, improving the deflection properties of the entire movable portion.
  • the multiple recessed grooves may be arranged at approximately equal intervals along the axial direction.
  • an axial groove portion extending in the axial direction so as to connect the multiple groove portions may be formed on the outer peripheral surface of the inner tube.
  • the axial grooves improve the flexibility of the movable part and also improve the responsiveness to the deflection of each of the multiple grooves.
  • the recessed groove portions are each formed by a through slit penetrating a tube wall of the inner tube,
  • a tubular cylindrical member may be inserted and fixed at a position corresponding to the movable portion of the inner tube, and the inner opening of the through slit may be blocked by the outer surface of the cylindrical member.
  • a recessed groove portion can be formed in the inner tube using the simple process of forming a through slit, and the tubular member prevents the lumen of the inner tube from communicating with the outside.
  • the recessed groove portion may be formed by a bottomed groove in which the tube wall of the inner tube is thinned.
  • the present invention provides a deflection operation device for medical equipment, which deflects and operates a movable part of the above medical device, and a controller housing to which a proximal end of the outer tube is connected and fixed; an operating member to which the proximal end of the inner tube is connected and fixed, The operating member is configured to be axially slidable and rotatable relative to the controller housing.
  • the inner tube can be slid distally relative to the outer tube, deflecting the movable part toward one side. Furthermore, by rotating the operating member relative to the controller housing, the one side of the inner tube can be operated to face the desired direction, thereby appropriately controlling the deflection direction of the movable part.
  • FIG. 1 is a side view showing the overall configuration of a medical device according to an embodiment of the present invention.
  • FIG. 2 is a perspective view of an outer tube and a tip member that constitute an elongated member of a medical device according to an embodiment of the present invention.
  • 3 is a cross-sectional view of an outer tube and a tip member that constitute an elongated member of a medical device according to an embodiment of the present invention.
  • FIG. FIG. 2 is a perspective view of an inner tube and a tubular member that constitute an elongated member of a medical device according to an embodiment of the present invention, as viewed from the connection portion side.
  • FIG. 2 is a perspective view of an inner tube and a tubular member that constitute an elongated member of a medical device according to an embodiment of the present invention, as viewed from the partial groove portion side.
  • FIG. 2 is a side view of the inner tube and tubular member that constitute the elongated member of the medical device according to the embodiment of the present invention, as viewed from the partial groove portion side.
  • FIG. 2 is a side view of an inner tube and a tubular member that constitute an elongated member of a medical device according to an embodiment of the present invention, as viewed from the connection portion side.
  • FIG. 10 is a side view of the inner tube and tubular member that constitute the elongated member of the medical device in an embodiment of the present invention, with the partial groove portion on the upper side and the connection portion on the lower side.
  • FIG. 10 is a cross-sectional view of an inner tube and a tubular member that constitute the elongated member of a medical device according to an embodiment of the present invention, with the partial groove portion on the upper side and the connection portion on the lower side.
  • FIG. 10 is a side view showing the vicinity of the movable portion of the elongated member of the medical device according to the embodiment of the present invention, as viewed from the side of the partial recessed groove portion of the inner tube.
  • FIG. 10 is a side view showing the vicinity of the movable portion of the elongated member of the medical device according to the embodiment of the present invention, with the partial groove portion on the upper side and the connection portion on the lower side.
  • FIG. 2 is a side view showing the vicinity of a movable portion of an elongated member of a medical device according to an embodiment of the present invention, as viewed from the connection portion side. This is a cross-sectional view of FIG. 7B taken along line AA.
  • FIG. 10 is a diagram for explaining the deflection operation of the movable portion in the embodiment of the present invention, and is a side view of the vicinity of the movable portion when the partial groove portion is on the upper side and the connection portion is on the lower side.
  • FIG. 10 is a diagram for explaining the rotational operation of the movable part in the embodiment of the present invention, and is a side view of the vicinity of the movable part when the partial groove part is on the lower side and the connection part is on the upper side.
  • 1 is a perspective view of a deflection operating device for a medical device according to an embodiment of the present invention.
  • 1 is a plan view of a deflection operating device for a medical device according to an embodiment of the present invention.
  • 1 is a side view of a deflection operating device for a medical device according to an embodiment of the present invention.
  • 1 is an exploded perspective view of a deflection operating device for a medical instrument according to an embodiment of the present invention.
  • FIG. 1 is a perspective view showing a state in which a cover body of a deflection operating device for a medical instrument according to an embodiment of the present invention is removed.
  • 1 is a perspective cross-sectional view showing a controller housing of a deflection operating device for a medical instrument according to an embodiment of the present invention.
  • FIG. 10 is a diagram showing a deflection operating device for a medical instrument when a movable part is straightened in an embodiment of the present invention, and is a plan view showing a state in which a cover body of the deflection operating device for a medical instrument is removed.
  • 1 is a side cross-sectional view of a deflection operating device for a medical instrument in an embodiment of the present invention when a movable part is straightened.
  • FIG. 1 is a diagram showing a deflection operation device for a medical instrument when a movable part is deflected in an embodiment of the present invention, and is a plan view showing a state in which a cover body of the deflection operation device for a medical instrument is removed.
  • 1 is a side cross-sectional view of a deflection operation device for a medical instrument when a movable part is deflected in an embodiment of the present invention.
  • FIG. FIG. 10 is a side view showing an inner tube constituting an elongated member of a medical device in a first modified example of the present invention, as viewed from the through slit side constituting a partial groove portion.
  • FIG. 10 is a side view showing an inner tube constituting an elongated member of a medical device according to a first modified example of the present invention, as viewed from the connection portion side.
  • FIG. 10 is a side view showing an inner tube constituting an elongated member of a medical device in a first modified example of the present invention, with the through slit on the upper side and the connection portion on the lower side.
  • FIG. 10 is a diagram for explaining the deflection operation of the movable portion in the first modified example of the present invention, and is a side view of the vicinity of the movable portion when the through slit is on the upper side and the connection portion is on the lower side.
  • FIG. 10 is a side view showing an inner tube constituting an elongated member of a medical device in a second modified example of the present invention, as viewed from the through slit side constituting the partial groove portion.
  • FIG. 10 is a side view showing an inner tube constituting an elongated member of a medical device according to a second modified example of the present invention, as viewed from the connection portion side.
  • FIG. 10 is a side view showing an inner tube constituting an elongated member of a medical device in a second modified example of the present invention, with the through slit on the upper side and the connection portion on the lower side.
  • a through slit 31 is formed on one side of the distal end of the inner tube 30, and a connection portion 50 is formed on the other side.
  • the position where the through slit 31 and connection portion 50 are formed functions as the movable portion 11.
  • the through slit 31 is a slit formed in the circumferential direction, and is provided so as to penetrate the tube wall of the inner tube 30 and make a cut in the tube wall. More specifically, as shown in Figure 6, the through slit 31 penetrates the tube wall of the inner tube 30 and has an outer peripheral opening 31c that opens at the outer peripheral surface 30c, and an inner peripheral opening 31d that opens at the inner peripheral surface 30d.
  • the through slit 31 is formed partially along the circumferential direction, leaving a portion of the tube wall at the distal end of the inner tube 30. More specifically, the through slit 31 is a slit that is continuous in the circumferential direction except for the connection portion 50, and the through slit 31 terminates at one and the other slit end portions 31e on either side of the connection portion 50, with no through slit 31 formed at the connection portion 50.
  • multiple through slits 31 are formed at the distal end of the inner tube 30.
  • multiple (10) through slits 31 are formed, but the number of through slits 31 is not particularly limited, and one or multiple through slits 31 may be formed.
  • the width of the through slits 31 (axial length L1 shown in Figure 5A) and the spacing between adjacent through slits 31 (axial length L2 shown in Figure 5A) are also not particularly limited, and can be set appropriately based on the axial length of the movable part 11, the number of through slits 31, etc.
  • the width of the through slits 31 is formed to be uniform along the circumferential direction. Furthermore, the width of each of the multiple through slits 31 is made approximately the same, and the intervals between adjacent through slits 31 are made equal. This makes it possible to curve the entire movable part 11 with a uniform and even curvature when the movable part 11 is deflected.
  • the through slit 31 is a circumferentially continuous slit excluding the connection portion 50, and has a pair of slit ends 31e near the connection portion 50.
  • the slit ends 31e are formed so as to close in a roughly U-shape.
  • the multiple through slits 31 are formed so that the slit ends 31e are aligned in the axial direction and all open facing the same direction. As described above, the through slits 31 are formed circumferentially, leaving a portion of the tube wall at the distal end of the inner tube 30, and the location where this portion of the tube wall remains forms the connection portion 50. In other words, the distal end of the inner tube 30 is circumferentially hollowed out by the multiple through slits 31, and ring-shaped portions of the tube wall of the inner tube 30 remain between adjacent through slits 31, and the connection portion 50 functions as a spine that connects and supports these ring-shaped tube walls in the axial direction.
  • the distal end of the inner tube 30 has a through slit 31 formed in the tube wall on one side and a connection portion 50 formed in the tube wall on the other side opposite the through slit 31, resulting in a shape that is asymmetrical with respect to the axis of the inner tube 30.
  • the other side opposite the through slit 31 refers to a position that is rotated approximately 180° circumferentially from approximately the center of the through slit 31 in the circumferential direction (a position that is approximately the same circumferential distance from one and the other slit ends 31e).
  • the tubular member 60 is positioned so as to cover all of the multiple through slits 31 from the inner circumferential side of the inner tube 30.
  • the outer circumferential surface 60c of the tubular member 60 is positioned so as to be in close contact with the inner circumferential surface 30d of the inner tube 30, and the inner circumferential openings 31d of the through slits 31 are blocked by the outer circumferential surface 60c of the tubular member 60, as shown in Figure 6.
  • a bottomed groove portion 40 is formed along the circumferential direction on the outer peripheral surface 30c of the inner tube 30.
  • the outer peripheral surface 60c of the tubular member 60 forms the bottom surface of the groove portion 40.
  • the through slit 31 is formed partially along the circumferential direction while leaving the connection portion 50
  • the groove portion 40 in this embodiment constitutes a partial groove portion 41 formed partially along the circumferential direction while leaving the connection portion 50.
  • the method for attaching the tubular member 60 to the distal end of the inner tube 30 is not particularly limited.
  • the tubular member 60 may be inserted into the distal end of the inner tube 30 and glued or fused, or the tubular member 60 and inner tube 30 may be fused together by insert molding, press working, or the like.
  • the inner tube 30 and the tubular member 60 have approximately the same inner diameter, and that the inner circumferential surface 30d of the inner tube 30 and the inner circumferential surface 60d of the tubular member 60 are smoothly connected in the axial direction.
  • the material of the outer tube 20 is not particularly limited, but it is preferable to select a material that can flex flexibly when the inner tube 30 is inserted, such as silicone rubber.
  • the material of the inner tube 30 is not particularly limited, but it is preferable to select a material that has excellent axial rigidity, allowing sliding operations performed on the proximal end of the inner tube 30 to be transmitted to the distal end of the inner tube 30, and excellent torque transmission properties, allowing rotation operations performed on the proximal end of the inner tube 30 to be transmitted to the distal end of the inner tube 30.
  • a material that has excellent axial rigidity allowing sliding operations performed on the proximal end of the inner tube 30 to be transmitted to the distal end of the inner tube 30, and excellent torque transmission properties, allowing rotation operations performed on the proximal end of the inner tube 30 to be transmitted to the distal end of the inner tube 30.
  • PEEK polyamide or polyether ether ketone
  • the material of the cylindrical member 60 is not particularly limited, but it is preferable to select a material that can flex flexibly inside the inner tube 30 so as not to impair the flexibility of the movable part 11. It is also preferable to select a material that has excellent adhesiveness and fusion properties with the material that constitutes the inner tube 30 so that it can be in close contact with the inner surface 30d of the inner tube 30.
  • materials that can be used for the cylindrical member 60 include thermosetting elastomers such as silicone rubber and thermoplastic elastomers.
  • Figures 7A to 7C are side views showing the vicinity of the movable portion 11 of the elongated member 10 of the medical device 1 in this embodiment.
  • Figure 7A is a side view seen from the partial groove portion 41 side of the inner tube 30
  • Figure 7B is a side view when the partial groove portion 41 is on the upper side and the connection portion 50 is on the lower side
  • Figure 7C is a side view seen from the connection portion 50 side.
  • Figure 8 is a cross-sectional view taken along line A-A of Figure 7B.
  • the outer tube 20 is shown in cross section, and the proximal sides of the outer tube 20 and inner tube 30 are not shown.
  • the elongated member 10 is constructed by inserting an inner tube 30 into an outer tube 20.
  • the inner tube 30 can be inserted into the lumen 20t of the outer tube 20.
  • the inner tube 30 and the outer tube 20 are not fixed to each other but are independent, and when the inner tube 30 is inserted into the outer tube 20, the inner tube 30 and the outer tube 20 can be displaced relative to each other in the axial direction and can rotate relative to each other in the circumferential direction.
  • the inner tube 30 is positioned at the most distal end of the outer tube 20. More specifically, a tip member 25 is attached to the distal end of the outer tube 20, and the inner tube 30 is positioned so that its distal end 30a abuts against the proximal end 26b of the sliding restriction portion 26 of the tip member 25, as shown in Figures 7A to 7C.
  • a plurality of grooves 40 are aligned in the axial direction on the outer peripheral surface 30c of the inner tube 30.
  • all of the grooves 40 are partial grooves 41 formed partially along the circumferential direction, with connection portions 50 remaining.
  • connection portions 50 extend axially on the other side of the inner tube 30.
  • the partial groove portion 41 is formed by blocking the inner peripheral opening 31d of the through slit 31 with the outer peripheral surface 60c of the tubular member 60.
  • the pair of slit ends 31e form both ends of the partial groove portion 41, and the tube wall of the inner tube 30 remaining between both ends of the partial groove portion 41 forms the connection portion 50.
  • the range of the connection portion 50 (the angle ⁇ in the circumferential direction about the axis C shown in Figure 8) is not particularly limited, but it is preferable that the angle ⁇ be less than 180°. In the example shown in Figure 8, the angle ⁇ is set to approximately 90°.
  • the movable portion 11 curves with one side of the inner tube 30 where the partial groove portion 41 is provided (the position facing the connection portion 50) as the inside and the other side of the inner tube 30 where the connection portion 50 is provided as the outside. The smaller the range of the connection portion 50 (angle ⁇ ) and the larger the range of the partial groove portion 41 (the angle 360° - ⁇ in the circumferential direction about the axis C), the more flexibly the movable portion 11 can bend.
  • Figure 9 is a diagram for explaining the deflection operation of the movable part 11 in this embodiment, and is a side view of the vicinity of the movable part 11 when the partial groove part 41 is on the upper side and the connection part 50 is on the lower side.
  • the outer tube 20 is shown in cross section, and the proximal sides of the outer tube 20 and inner tube 30 are not shown.
  • the inner tube 30 has an asymmetrical shape, with multiple partial grooves 41 arranged in the axial direction on one side and a connection portion 50 on the other side.
  • the axial compressive stress generated in the inner tube 30 is concentrated on the one side where the multiple partial grooves 41 are provided, and the multiple partial grooves 41 are compressed in the axial direction, deforming the through slit 31 so that it narrows in the axial direction.
  • the movable portion 11 is in a deflected state (hereinafter referred to as the deflected state) in which the one side where the multiple partial grooves 41 are provided is the inside and the other side where the connection portion 50 is provided is the outside, as shown by arrow D12 in Figure 9.
  • the movable part 11 deflects, and the greater the amount of distal displacement of the inner tube 30 relative to the outer tube 20, the greater the deflection angle of the movable part 11. Furthermore, when the movable part 11 is in a deflected state, when the inner tube 30 is slid proximally relative to the outer tube 20, the deflection angle of the movable part 11 decreases, and the smaller the amount of distal displacement of the inner tube 30 relative to the outer tube 20, the smaller the deflection angle of the movable part 11.
  • Figure 10 is a diagram for explaining the rotational movement of the movable part 11 in this embodiment, and is a side view of the vicinity of the movable part 11 when the partial groove portion 41 is on the lower side and the connection part 50 is on the upper side.
  • the outer tube 20 is shown in cross section, and the proximal sides of the outer tube 20 and inner tube 30 are not shown.
  • the outer tube 20 and inner tube 30 are not fixed to each other, and the inner tube 30 is able to rotate around the axis C inside the outer tube 20.
  • the orientation of the side of the inner tube 30 relative to the outer tube 20, i.e., the orientation (circumferential position) of the multiple partial grooves 41 and connecting portions 50 provided on the inner tube 30, can be changed. This makes it possible to change the deflection direction of the movable portion 11, which deflects so as to curve with one side surface provided with the multiple partial grooves 41 as the inside and the other side surface provided with the connecting portions 50 as the outside.
  • the inner tube 30 is designed to be able to rotate inside the outer tube 20 whether the movable part 11 is in a straight or deflected state. For example, when the movable part 11 is deflected in a specific direction, rotating the inner tube 30 relative to the outer tube 20 as shown by arrow D31 in Figure 10 changes the circumferential positions of the multiple partial grooves 41 and the connection part 50 provided on the inner tube 30 relative to the outer tube 20. As a result, the movable part 11 changes its deflection direction while maintaining the deflection angle, as shown by arrow D32 in Figure 10, with the elongated member 10 proximal to the movable part 11 as its axis.
  • the deflection angle of the movable part 11 can be changed by adjusting the amount of axial displacement of the inner tube 30 relative to the outer tube 20, while at the same time, the deflection direction of the movable part 11 can be changed by adjusting the amount of rotation of the inner tube 30 relative to the outer tube 20.
  • the deflection operation device 100 of this embodiment will be described.
  • the elongated member 10 is configured to include an outer tube 20 and an inner tube 30, and the movable portion 11 can be deflected by sliding and rotating the inner tube 30 relative to the outer tube 20.
  • the deflection operation device 100 of this embodiment is used to deflect the movable portion 11 located at the distal end of the elongated member 10, and is configured to allow the inner tube 30 to slide and rotate relative to the outer tube 20.
  • Figure 11 is a perspective view of the deflection operation device 100 in this embodiment.
  • Figure 12 is a plan view of the deflection operation device 100 in this embodiment.
  • Figure 13 is a side view of the deflection operation device 100 in this embodiment.
  • Figure 14 is an exploded perspective view of the deflection operation device 100 in this embodiment. The distal side of the outer tube 20 and the distal side of the inner tube 30 are not shown in Figures 11 to 14.
  • the longitudinal direction of the deflection manipulation device 100 refers to the direction connecting the distal end where the outer tube 20 and inner tube 30 are inserted into the deflection manipulation device 100 and the proximal end where the connecting member 900 is inserted, and coincides with the axial direction of the inner tube 30 inserted into the deflection manipulation device 100.
  • the controller housing 200 is curved in an arch shape toward the proximal side to make it easier for the user to grip, and the base 400 is formed with a curved portion 201 that the user can hook their fingers onto when gripping the controller housing 200.
  • the operating member 800 is configured to be slidable and rotatable longitudinally relative to the controller housing 200, and an operating handle portion 810 of the operating member 800 is located on the distal side of the controller housing 200.
  • the user can grip the controller housing 200 by placing their index finger on the curved portion 201, and use their thumb to move or rotate the operating handle portion 810 longitudinally relative to the controller housing 200.
  • the deflection operation device 100 is designed to deflect the movable part 11 provided at the distal end of the elongated member 10 when the user grasps the controller housing 200 and moves the operation handle part 810 distally in the longitudinal direction relative to the controller housing 200. Furthermore, the user can change the deflection direction of the movable part 11 by rotating the operation handle part 810.
  • the deflection operation device 100 is composed of a cover body 300, a base 400, an outer tube fixing member 500, an expansion member 600, an operation member 800, and a connection member 900.
  • the deflection operation device 100 can be assembled by combining each of these components.
  • Each component is not particularly limited, but can be made from a polymer material, for example.
  • a marker groove 315 is formed on the outer surface of the proximal side of the lid body 300. This marker groove 315 is used as a reference marker to grasp the amount of rotation when the operating member 800 is rotated.
  • a similar marker groove 815 is also formed in the operating handle portion 810 of the operating member 800, and the position of this marker groove 815 can be set in the deflection direction of the movable part 11.
  • the inner surface of the distal side of the base 400 is provided with a guide groove 410 that has a roughly semicircular cross section and extends in the longitudinal direction.
  • a similar guide groove is also provided on the inner surface of the distal side of the lid body 300, and when the lid body 300 and the base 400 are stacked on top of each other, a cylindrical space 210 (see Figure 16) is formed that can accommodate the proximal end of the operating member 800.
  • the operating member 800 is able to slide and rotate in the longitudinal direction within this cylindrical space 210.
  • the guide groove 410 is formed with an engagement recess 450 that is recessed radially outward from the inner surface of the guide groove 410.
  • the engagement recess 450 is shaped so that the engagement protrusion 550 of the outer tube fixing member 500 can be inserted into it, and by inserting the engagement protrusion 550 into the engagement recess 450, the outer tube fixing member 500 can be fixed to the base 400 (controller housing 200).
  • an insertion hole 220 is formed through which the connecting member 900 can be inserted, and the pair of blade members 910 of the connecting member 900 can be inserted into the blade member insertion groove 430 of the base 400 and the blade member insertion groove of the lid 300, thereby fixing the connecting member 900 to the controller housing 200.
  • the outer tube fixing member 500 is composed of a tubular member extending in the longitudinal direction.
  • the outer tube fixing member 500 has a through hole 500h along the axial direction inside it, which is open at the distal end 500a and the proximal end 500b.
  • the inner and outer diameters of the outer tube fixing member 500 are approximately the same as those of the outer tube 20, allowing the inner tube 30 to be inserted through the through hole 500h of the outer tube fixing member 500.
  • the proximal end 20b of the outer tube 20 is fixed to the distal end 500a of the outer tube fixing member 500.
  • the method for attaching the proximal end 20b of the outer tube 20 to the distal end 500a of the outer tube fixing member 500 may be fitted externally or internally to the proximal end 20b of the outer tube 20 and glued or fused thereto, or the outer tube fixing member 500 and the outer tube 20 may be fused together by insert molding, press working, or the like.
  • the outer tube 20 and the outer tube fixing member 500 have approximately the same inner and outer diameters so that they are smoothly connected in the axial direction.
  • An engaging protrusion 550 is integrally formed on the proximal end of the outer tube fixing member 500.
  • the engaging protrusion 550 can be formed, for example, from a flat plate member extending longitudinally and erected approximately perpendicularly from the outer peripheral surface of the outer tube fixing member 500.
  • the engaging protrusion 550 is shaped so that it can be inserted into the engaging recess 450 of the base 400. As described above, by inserting the engaging protrusion 550 into the engaging recess 450, the outer tube fixing member 500 can be fixed to the base 400 (controller housing 200).
  • the expansion member 600 is a member that is attached to the proximal end 30b of the inner tube 30.
  • the expansion member 600 serves to easily secure the inner tube 30 to the operating member 800.
  • the expansion member 600 is composed of a tubular member that can be fitted onto the proximal end of the inner tube 30, with rounded rectangular flat plate members attached to both longitudinal ends.
  • the operating member 800 is composed of an operating handle portion 810, a cylindrical portion 820, a connecting portion 830, a half member 841, and a half member 842.
  • the operating handle portion 810, the cylindrical portion 820, the connecting portion 830, and the half member 841 are integrally formed.
  • the operating handle portion 810 and the cylindrical portion 820 are cylindrical, with a through-hole 800h formed inside along the axial direction. While the cylindrical portion 820 is cylindrical, the operating handle portion 810, which is provided on the distal side of the cylindrical portion 820, is tapered, with its outer diameter increasing as it moves distally. In addition, a marker groove 815 is formed on the proximal side of the operating handle portion 810, and the position of this marker groove 815 can be set in the deflection direction of the movable portion 11.
  • the operating handle portion 810 On the distal side of the operating handle portion 810, multiple fine slits 810A are formed in the axial direction across its entire outer surface.
  • the operating handle portion 810 is the component that the user directly touches when deflecting the movable portion 11, and by providing the slits 810A on the outer surface of the operating handle portion 810, slippage of the operating handle portion 810 during operation can be reduced.
  • the inner diameter of the through-hole 800h formed inside the operating handle portion 810 and the tubular portion 820 is set larger than the outer diameter of the outer tube fixing member 500. This allows the outer tube fixing member 500 to be inserted through the through-hole 800h of the operating handle portion 810 and the tubular portion 820.
  • a connecting portion 830 is provided on the proximal side of the tubular portion 820, extending from the proximal end 820b of the tubular portion 820 toward the proximal side.
  • the connecting portion 830 is composed of a long, thin rod-shaped member extending in the longitudinal direction.
  • the longitudinal length of the connecting portion 830 (the longitudinal distance between the proximal end 820b of the tubular portion 820 and the distal end 840a of the inner tube fixing portion 840) is not particularly limited, but as will be described below, the longitudinal length of the connecting portion 830 is the maximum distance the inner tube 30 slides axially relative to the outer tube 20, and therefore it is preferable that the longitudinal length be set to a length that allows the movable portion 11 to be sufficiently deflected.
  • the width of the connecting portion 830 is not particularly limited, but as will be described later, the rotation of the operating member 800 is restricted when the side surfaces 830a and 830b of the connecting portion 830 abut against the engaging protrusions 550 of the outer tube fixing member 500, respectively. Therefore, it is preferable to narrow the connecting portion 830 and increase the rotation range of the operating member 800, taking into consideration the balance with the strength of the connecting portion 830.
  • the half-split members 841 and 842 When the half-split members 841 and 842 are stacked on top of each other, they form a cylindrical shape, constituting the inner tube fixing portion 840.
  • the half-split members 841 and 842 have a shape that fits the expansion member 600 attached to the proximal end 30b of the inner tube 30, and are fixed together with the expansion member 600 by adhesive or the like while sandwiching the expansion member 600.
  • the connecting member 900 is composed of a long, thin tubular member.
  • the connecting member 900 has a gently curved shape to match the bow-shaped curve of the controller housing 200.
  • the outer diameter of the connecting member 900 is set smaller than the inner diameter of the inner tube 30, allowing the distal end 900a of the connecting member 900 to be inserted into the lumen 30t of the inner tube 30 from the proximal end 30b of the inner tube 30.
  • the connecting member 900 serves to extend the lumen 30t of the inner tube 30 and guide it to the outside of the controller housing 200.
  • the proximal end of the connecting member 900 is provided with a pair of wing members 910 and an engagement portion 920.
  • the pair of wing members 910 are located distally of the engagement portion 920.
  • the pair of blade members 910 can be configured, for example, as flat plate members extending longitudinally and erected approximately perpendicularly from the outer circumferential surface of the connecting member 900.
  • the pair of blade members 910 are shaped so that they can be inserted into the blade member insertion grooves 430 formed in each of the cover body 300 and the base 400, and as described above, by inserting the pair of blade members 910 into the blade member insertion grooves 430, the connecting member 900 can be fixed to the controller housing 200.
  • the engagement portion 920 is composed of a protruding member that protrudes laterally to expand the proximal end face of the connection member 900.
  • the engagement portion 920 is disposed on the outside of the controller housing 200 when the deflection operation device 100 is assembled, and functions as an engagement portion with a connector or the like that is connected to the proximal side of the connection member 900.
  • Figure 15 is a perspective view showing the deflection operation device 100 of this embodiment with the cover 300 removed.
  • Figure 16 is a perspective cross-sectional view showing the controller housing 200 of the deflection operation device 100 of this embodiment. The distal side of the outer tube 20 and the distal side of the inner tube 30 are not shown in Figures 15 and 16.
  • the proximal end 30b of the inner tube 30 is inserted into the through-hole 800h formed in the operating handle portion 810 and tubular portion 820 of the operating member 800 from the operating handle portion 810 side. Because the inner diameter of the through-hole 800h of the operating member 800 is larger than the outer diameter of the outer tube 20, the operating member 800 can be advanced distally to a position where it is fitted onto the outer tube 20.
  • the proximal end 30b of the inner tube 30 is inserted into the distal end 500a of the outer tube fixing member 500, and the outer tube fixing member 500 is advanced distally.
  • the distal end 500a of the outer tube fixing member 500 is then fixed to the proximal end 20b of the outer tube 20. This secures the outer tube 20 and outer tube fixing member 500.
  • the outer tube 20 and outer tube fixing member 500 are connected, and the inner tube 30 and operating member 800 are connected.
  • the inner tube 30 and operating member 800 are slidable and rotatable relative to the outer tube 20 and outer tube fixing member 500.
  • the lid body 300 is placed on the base 400, and the lid body 300 and base 400 are secured together with screws or the like, completing the assembly of the deflection operation device 100.
  • the above-described method of assembling the deflection manipulation device 100 is merely an example and is not limited to this.
  • the deflection manipulation device 100 is assembled after the movable part 11 is in a state where it can be deflected, as shown in Figures 7A to 7C.
  • the deflection manipulation device 100 may be assembled first, and then the configuration of the distal end of the outer tube 20 and the distal end of the inner tube 30 may be adjusted as appropriate.
  • the controller housing 200 is formed. Inside the controller housing 200, a cylindrical space 210 is formed, as shown in Figure 16.
  • the proximal end of the operating member 800 (cylindrical portion 820, connecting portion 830, and inner tube fixing portion 840) is housed in the cylindrical space 210. Because the operating member 800 is not fixed to the controller housing 200, it is able to slide longitudinally relative to the controller housing 200 within the cylindrical space 210 and is also able to rotate relative to the controller housing 200.
  • the operating member 800 and inner tube 30 are fixed at the inner tube fixing portion 840, and the inner tube 30 moves integrally with the operating member 800.
  • the inner tube 30 also slides longitudinally (axially) relative to the controller housing 200 in conjunction with the operating member 800.
  • the inner tube 30 also rotates relative to the controller housing 200 in conjunction with the operating member 800.
  • the outer tube fixing member 500 is inserted into the cylindrical portion 820 of the operating member 800, and the inner tube 30 is inserted into the outer tube fixing member 500.
  • the outer tube fixing member 500 is disposed in the gap formed between the inner circumferential surface of the cylindrical portion 820 of the operating member 800 and the outer circumferential surface 30c of the inner tube 30.
  • the engaging protrusion 550 of the outer tube fixing member 500 fits into the engaging recess 450 of the base 400, and the engaging recess 450 and the engaging protrusion 550 engage with each other. This secures the outer tube fixing member 500 to the controller housing 200.
  • the proximal end 20b of the outer tube 20 is fixed to the distal end 500a of the outer tube fixing member 500.
  • the outer tube fixing member 500 is fixed to the controller housing 200. With this configuration, the outer tube 20 is connected and fixed to the controller housing 200 via the outer tube fixing member 500.
  • the connecting member 900 is also fixed to the controller housing 200 by being sandwiched between the lid body 300 and the base 400.
  • the distal end 840a of the inner tube fixing portion 840 abuts against the engaging protrusion 550 of the outer tube fixing member 500, restricting further sliding of the operating member 800 toward the distal side.
  • the proximal end 820b of the tubular portion 820 abuts against the engaging protrusion 550 of the outer tube fixing member 500, restricting further sliding of the operating member 800 toward the proximal side.
  • the operating handle portion 810 is prevented from entering the cylindrical space 210, restricting further sliding of the operating member 800 toward the proximal side.
  • the range of longitudinal sliding of the operating member 800 can be defined.
  • the range of longitudinal sliding of the operating member 800 can be set appropriately by adjusting the axial length of the connecting portion 830 of the operating member 800 and the axial length of the connecting portion 830 of the operating member 800.
  • the side surfaces 830a, 830b of the connecting portion 830 abut against the engaging protrusion 550 of the outer tube fixing member 500, thereby restricting the rotation of the operating member 800.
  • the width of the connecting portion 830 as narrow as possible while also taking into consideration the strength of the connecting portion 830, the rotation range of the operating member 800 can be increased, and it is even possible to achieve a rotation range approaching the entire circumference (360°).
  • Figure 17 is a diagram showing the deflection operation device 100 of this embodiment when the movable part 11 is straightened (when the movable part 11 is in a straight state), and is a plan view showing the state with the cover 300 of the deflection operation device 100 removed.
  • Figure 18 is a side cross-sectional view of the deflection operation device 100 of this embodiment when the movable part 11 is straightened (when the movable part 11 is in a straight state).
  • Figure 19 is a diagram showing the deflection operation device 100 of this embodiment when the movable part 11 is deflected, and is a plan view showing the state with the cover 300 of the deflection operation device 100 removed.
  • Figure 20 is a side cross-sectional view of the deflection operation device 100 of this embodiment when the movable part 11 is deflected.
  • the deflection operation device 100 shown in Figures 17 and 18 is in a state in which the operation member 800 has been slid to the most proximal side.
  • the distal end 30a of the inner tube 30 is positioned so as to abut against the proximal end 26b of the sliding restriction portion 26 of the tip member 25, as shown in Figures 7A to 7C, and the movable portion 11 is in a straight state in which it extends straight without deflection.
  • the operating member 800 can be slid from its proximal most position to the distal side relative to the controller housing 200, as shown by arrow D41 in Figures 17 and 18.
  • the inner tube 30 fixed to the operating member 800 slides distally in the longitudinal direction (axial direction) relative to the outer tube 20 fixed to the controller housing 200.
  • the movable part 11 can be deflected so that its curved side is curved with one side on which the multiple partial grooves 41 are provided facing inward and the other side on which the connection part 50 is provided facing outward.
  • the inner tube 30 is fixed to the operating member 800 so that the orientation of the side on which the partial grooves 41 are provided matches the orientation of the marker groove 815 on the operating member 800.
  • the user can determine the deflection direction of the movable part 11 from the position of the marker groove 815.
  • the deflection operation device 100 shown in Figures 19 and 20 is in a state in which the operation member 800 has been slid to the most distal side, and the movable part 11 is in a deflected state as shown in Figure 9.
  • the operation member 800 can be slid proximally relative to the controller housing 200, as shown by arrow D51 in Figures 19 and 20.
  • the inner tube 30 fixed to the operating member 800 slides proximally along the longitudinal direction (axial direction) relative to the outer tube 20 fixed to the controller housing 200.
  • the deflection angle of the movable part 11 decreases, as shown by arrow D22 in FIG. 9, and the movable part 11 returns to a straight, undeflected state, as shown by arrow D22 in FIG. 9.
  • the inner tube 30 can be slid distally relative to the outer tube 20, thereby deflecting the movable part 11.
  • the inner tube 30 can be slid proximally relative to the outer tube 20, thereby reducing the deflection angle of the movable part 11.
  • the movable part 11 can be deflected by sliding the operating member 800 relative to the controller housing 200 and sliding the inner tube 30 axially relative to the outer tube 20, and the movable part 11 can be deflected to a desired angle by adjusting the amount of axial displacement of the operating member 800 relative to the controller housing 200.
  • the operating member 800 can be rotated relative to the controller housing 200, as shown by arrow D61 in Figures 17 to 20, regardless of whether the movable portion 11 is in a straight or deflected state.
  • the inner tube 30 fixed to the operating member 800 rotates inside the outer tube 20 fixed to the controller housing 200.
  • the deflection angle of the movable part 11 can be changed by adjusting the amount of longitudinal (axial) displacement of the operating member 800 relative to the controller housing 200, while at the same time, the deflection direction of the movable part 11 can be changed by adjusting the amount of rotation of the operating member 800 relative to the controller housing 200.
  • Figures 21A to 21C are side views showing the inner tube 30 constituting the elongated member 10 of the medical device 1 in the first modified example of the present invention.
  • Figure 21A is a side view seen from the side of the through slit 31 constituting the partial groove portion 41
  • Figure 21B is a side view seen from the side of the connection portion 50
  • Figure 21C is a side view when the through slit 31 is on the upper side and the connection portion 50 is on the lower side.
  • Figure 22 is a diagram for explaining the deflection operation of the movable portion 11 in the first modified example of the present invention, and is a side view of the vicinity of the movable portion 11 when the through slit 31 is on the upper side and the connection portion 50 is on the lower side.
  • the proximal side of the inner tube 30 is omitted from Figures 21A to 21C.
  • the outer tube 20 is shown in cross section, and the proximal sides of the outer tube 20 and inner tube 30 are omitted from the illustration.
  • the through slit 31 of the inner tube 30 may be formed so that the slit end 31e is closed in a generally V-shape, as shown in Figures 21B and 21C, and further, the through slit 31 may be formed so that its width is greatest at approximately the circumferential center (the position facing the connection portion 50).
  • the inner tube 30 bends with one side where the partial groove portion 41 is provided facing inward and the other side where the connection portion 50 is provided facing outward.
  • the inner tube 30 has a shape that makes it easy to bend inward, allowing the movable portion 11 to be deflected more flexibly.
  • all of the multiple through slits 31 may be through slits 31 whose width is greatest at approximately the circumferential center, or only some of the multiple through slits 31 may be through slits 31 whose width is greatest at approximately the circumferential center.
  • Figures 23A to 23C are side views showing the inner tube 30 constituting the elongated member 10 of the medical device 1 in the second modified example of the present invention.
  • Figure 23A is a side view seen from the side of the through slit 31 constituting the partial groove portion 41
  • Figure 23B is a side view seen from the side of the connection portion 50
  • Figure 23C is a side view when the through slit 31 is on the upper side and the connection portion 50 is on the lower side.
  • the proximal side of the inner tube 30 is not shown in Figures 23A to 23C.
  • the full-circumference through slits 32 do not generate resistance from the connection portion 50, as opposed to the through slits 31 (hereinafter referred to as partial through slits 31), which leave a portion of the tube wall of the inner tube 30 to form the connection portion 50, and quickly respond to the compressive stress and deform.
  • partial through slits 31 the full-circumference through slits 32 deform first, triggering deformation of the inner tube 30, followed by deformation of the partial through slits 31, allowing the inner tube 30 to bend reliably.
  • the partial through slit 31 forms a partial recessed groove portion 41 that is recessed only in a portion of the circumference of the inner tube 30, and the full-circumference through slit 32 forms a full-circumference recessed groove portion that is recessed along the entire circumference of the inner tube 30.
  • the number and formation positions of the full-circumferential through slits 32 are not particularly limited, but the full-circumferential through slits 32 may be periodically and balanced with respect to the partial through slits 31, for example, by arranging two partial through slits 31 between adjacent full-circumferential through slits 32 as shown in Figures 23A to 23C. This allows the full-circumferential through slits to be periodically arranged with a predetermined number of partial through slits 41 in between, improving the deflection properties of the entire movable portion 11.
  • Figures 24A to 24C are side views showing the inner tube 30 constituting the elongated member 10 of the medical device 1 in the third modified example of the present invention.
  • Figure 24A is a side view seen from the side of the through slit 31 constituting the partial groove portion 41
  • Figure 24B is a side view seen from the side of the connection portion 50
  • Figure 24C is a side view when the through slit 31 is on the upper side and the connection portion 50 is on the lower side.
  • the proximal side of the inner tube 30 is not shown in Figures 24A to 24C.
  • multiple through slits 31 may be formed in the inner tube 30, and an axial through slit 33 may be formed in the approximate circumferential center of the multiple through slits 31 (at a position facing the connection portion 50) along the axial direction so as to cross the multiple through slits 31.
  • an axial through slit 33 By forming the axial through slit 33, one side of the inner tube 30 (the side facing the connection portion 50) can deform more flexibly.
  • the partial through slits 31 form partial groove portions 41 that are recessed in only a portion of the circumferential direction of the inner tube 30, and the axial through slits 33 form axial groove portions that extend in the axial direction to connect multiple partial groove portions 41. Forming the axial groove portions allows the movable part 11 to deflect more flexibly.
  • multiple through slits 31 are formed in the inner tube 30.
  • a single through slit 31 may be formed in the inner tube 30 as shown in Figures 25A to 25C.
  • the axial width (length) of the single through slit 31 is not particularly limited, but for example, as shown in Figures 25A to 25C, a single through slit 31 may be formed to extend across the entire movable section 11. This makes it easier for the inner tube 30 to bend inward, allowing the movable section 11 to deflect more flexibly.
  • Figures 27A and 27B are views showing the inner tube 30 constituting the elongated member 10 of the medical device 1 in the fifth modified example of the present invention.
  • Figure 27A is a side view in which the bottomed groove 35 is on the upper side and the connecting portion 50 is on the lower side
  • Figure 27B is a cross-sectional view in which the bottomed groove 35 is on the upper side and the connecting portion 50 is on the lower side.
  • the proximal side of the inner tube 30 is not shown in Figures 27A and 27B.
  • Figure 27B also shows an enlarged view of the vicinity of the distal end of the inner tube 30.
  • the bottomed groove 35 has an outer peripheral opening 35c that opens to the outer peripheral surface 30c of the inner tube 30, and a groove bottom 35d formed by the thick portion of the tube wall of the inner tube 30.
  • the bottomed groove 35 also has a bottomed groove end 35e, and a connection portion 50 is formed on the tube wall on the other side of the inner tube 30 facing the bottomed groove 35.
  • Figure 28 is a perspective view showing a deflection operation device 100 according to the sixth modified example of the present invention.
  • the distal side of the outer tube 20 and the distal side of the inner tube 30 are not shown.
  • the deflection operation device 100 may be configured so that the inner tube 30 can slide and rotate relative to the outer tube 20.
  • the outer tube 20 is fixed to the controller housing 200 inside the controller housing 200 by the engaging protrusion 550 of the outer tube fixing member 500, which is connected and fixed to the outer tube 20, engaging and fixing with the engaging recess 450 of the base 400, as shown in FIG. 16, for example.
  • the outer tube 20 may be fixed to the controller housing 200 outside the controller housing 200 using an outer tube support member 250, as in the sixth modified example.
  • the outer tube support member 250 is composed of a flange portion 251, a support portion 252, and a fixing portion 253.
  • the support portion 252 is fixed to the flange portion 251 and is positioned so as to protrude toward the distal side.
  • the support portion 252 can be composed of, for example, multiple rod-shaped members extending toward the distal side in a direction approximately perpendicular to the disc member of the flange portion 251.
  • the fixing portion 253 is fixed to the support portion 252 and is disposed on the distal side of the controller housing 200.
  • the fixing portion 253 is also connected and fixed to the outer peripheral surface 20c of the outer tube 20.
  • the fixing portion 253 can be configured, for example, as a circular plate member with a through hole formed in its approximate center, the through hole having a diameter approximately the same as the outer diameter of the outer tube 20, and the inner peripheral surface of the through hole of the fixing portion 253 is fixed by adhesive or the like to the outer peripheral surface 20c of the outer tube 20 inserted through the through hole. In this case, there is no need to engage and fix the engaging protrusion 550 of the outer tube fixing member 500 with the engaging recess 450 of the base 400.
  • the first to sixth modified examples described above can be combined as appropriate.
  • some or all of the through slits 31 (partial through slits 31), the full-circumferential through slits 32, and the axial through slits 33 in the first to fourth modified examples may be formed with the bottomed grooves 35 in the fifth modified example.
  • the above configuration is a simple one that does not require an operating wire, and allows the inner tube 30 to slide distally relative to the outer tube 20, stably deflecting the distal end of the medical device 1. It also ensures a large lumen 30t for the inner tube 30, which is made of a long tubular member, allowing the diameter of the medical device 1 to be reduced.
  • the inner tube 30 is configured to be rotatable relative to the outer tube 20, so the deflection direction can be appropriately controlled by rotating the inner tube 30 relative to the outer tube 20 and setting one side of the inner tube 30 to face the desired direction.
  • the medical device 1 may have a plurality of circumferentially recessed grooves 40 arranged along the axial direction on one side of the inner tube 30.
  • the multiple grooves 40 are arranged biased toward one side of the inner tube 30, and the connection portion 50, which is smoothly connected in the axial direction, is provided on the other side. Therefore, when the inner tube 30 is slid distally relative to the outer tube 20, the sliding restriction portion 26 generates axial compressive stress in the inner tube 30, concentrating the stress on the multiple grooves 40 arranged on one side. As a result, the movable portion 11, which is provided with the multiple grooves 40, can be deflected more flexibly toward one side.
  • the multiple groove portions 40 may include partial groove portions 41 in which only a portion of the circumferential direction of the inner tube 30 is recessed.
  • all of the multiple groove portions 40 may be partial groove portions 41.
  • the entire movable part 11 which has multiple grooves 40 formed therein, can be deflected uniformly.
  • the multiple grooves 40 may include partial grooves 41 that are recessed only partially around the circumference of the inner tube 30, and full-circumferential grooves that are recessed around the entire circumference of the inner tube 30.
  • the full-circumferential grooves can be formed by full-circumferential through slits 32 formed in the inner tube 30.
  • the circumferential groove portions may be periodically arranged with a predetermined number of partial groove portions 41 in between.
  • the partial groove portion 41 and the full-circumferential groove portion can be arranged in a balanced manner, improving the deflection properties of the entire movable portion 11.
  • the medical device 1 may have an axial groove formed on the outer surface 30c of the inner tube 30, which extends in the axial direction to connect multiple grooves 40.
  • the axial groove can be formed by an axial through slit 33 formed in the inner tube 30.
  • the axial grooves improve the flexibility of the movable part 11 and also improve the responsiveness of each of the multiple grooves 40 to deflection.
  • the recessed groove portion 40 can be formed in the inner tube 30 through the simple process of forming the through slit 31, and the tubular member 60 prevents the lumen 30t of the inner tube 30 from communicating with the outside.
  • the recessed groove portion 40 may be formed by a bottomed groove 35 in which the tube wall of the inner tube 30 is thinned.
  • the deflection operation device 100 in the above-described embodiment deflects the movable part 11 of the medical device 1, and includes a controller housing 200 to which the proximal end 30b of the outer tube 20 is connected and fixed, and an operation member 800 to which the proximal end 30b of the inner tube 30 is connected and fixed, and the operation member 800 is configured to be axially slidable and rotatable relative to the controller housing 200.
  • the inner tube 30 can be slid distally relative to the outer tube 20, deflecting the movable part 11 toward one side. Furthermore, by rotating the operating member 800 relative to the controller housing 200, the one side of the inner tube 30 can be operated to face the desired direction, thereby appropriately controlling the deflection direction of the movable part 11.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Biophysics (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Public Health (AREA)
  • Animal Behavior & Ethology (AREA)
  • Anesthesiology (AREA)
  • Hematology (AREA)
  • Pulmonology (AREA)
  • Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

Afin de permettre d'assurer une grande lumière d'un élément allongé et de réaliser une opération de déviation stable d'une partie mobile avec une configuration simple, ce dispositif médical (1) comprend : un tube externe (20) constitué d'un élément tubulaire allongé flexible ; et un tube interne (30) constitué d'un élément tubulaire allongé flexible inséré dans le tube externe (20) de façon à pouvoir coulisser dans la direction axiale par rapport au tube externe (20) et pouvant tourner. L'extrémité distale du tube externe (20) est pourvue d'une partie de restriction coulissante (26) (élément de pointe (25)) en contact avec une extrémité distale (30a) du tube interne (30) inséré pour limiter le coulissement du tube interne (30) par rapport au côté distal. Une partie de rainure évidée (40), évidée dans la direction circonférentielle, est formée dans un côté de surface latérale du tube interne (30) positionné sur une partie mobile (11), et une partie de liaison (50) reliée sans à-coups dans la direction axiale est disposée sur l'autre côté de surface latérale du tube interne (30) faisant face au côté de surface latérale du tube interne (30).
PCT/JP2025/012117 2024-03-28 2025-03-26 Dispositif médical et dispositif d'opération de déviation pour équipement médical Pending WO2025205999A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2024-054457 2024-03-28
JP2024054457 2024-03-28

Publications (1)

Publication Number Publication Date
WO2025205999A1 true WO2025205999A1 (fr) 2025-10-02

Family

ID=97218071

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2025/012117 Pending WO2025205999A1 (fr) 2024-03-28 2025-03-26 Dispositif médical et dispositif d'opération de déviation pour équipement médical

Country Status (1)

Country Link
WO (1) WO2025205999A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008523910A (ja) * 2004-12-17 2008-07-10 バイオカーディア・インコーポレイテッド 操作可能なガイドカテーテル及びその使用方法
JP2017508486A (ja) * 2013-12-19 2017-03-30 ベンディット テクノロジーズ リミテッド． ステアリング・ツール

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008523910A (ja) * 2004-12-17 2008-07-10 バイオカーディア・インコーポレイテッド 操作可能なガイドカテーテル及びその使用方法
JP2017508486A (ja) * 2013-12-19 2017-03-30 ベンディット テクノロジーズ リミテッド． ステアリング・ツール

Similar Documents

Publication Publication Date Title
CN113164011B (zh) 包括管元件的可操纵器械
US8911397B2 (en) Steerable sheath handle pulley mechanism
JP5255571B2 (ja) バルブアセンブリ
JP4675686B2 (ja) 二方向カテーテルのための改善された操縦機構
US6169916B1 (en) Electrophysiology catheter with multifunctional wire and method for making
US10493238B2 (en) Steering mechanism for bi-directional catheter
EP2288284B1 (fr) Système de control d'orientation à mécanisme de verrouillage
EP2015823B1 (fr) Ensemble poignée à gaine pouvant être déviée
CN112822971B (zh) 一种接头
US10493240B2 (en) Steerable catheter handle
EP3403602B1 (fr) Outil de rasage béquillable
JP2010514535A5 (fr)
WO2012106045A2 (fr) Dispositif médical endoscopique ayant des joints d'articulation
US20180256851A1 (en) Steerable guide catheter
WO2025205999A1 (fr) Dispositif médical et dispositif d'opération de déviation pour équipement médical
CN116490113A (zh) 可调整刚度的医疗装置
US20230016752A1 (en) Gasket with external sealing features for introducer sheath
US20250170366A1 (en) Pull wire retainer for steerable medical device
JP2025106704A (ja) 医療機器用偏向操作装置
JP2024136427A (ja) カテーテルハンドルおよびそれを備えたカテーテル
JP2024136429A (ja) カテーテルハンドルおよびそれを備えたカテーテル

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 25775936

Country of ref document: EP

Kind code of ref document: A1