Handle and catheter including the same

Abstract

To provide a handle for operating a tube provided on a distal side, that enables adjustment of a motion and operability of a distal portion of the tube.SOLUTION: A handle 1 is for operating a tube provided on a distal side. The handle 1 includes: a handle body 2; a rotary board 3 provided rotatably with respect to the handle body 2; and a wire 6 having a distal portion arranged in an inner cavity of the tube and a proximal portion arranged in the handle 1. The rotary board 3 includes: a lock part 4 to which the proximal portion of the wire 6 is fixed; and a guide member 9 with which the wire 6 comes into contact when the rotary board 3 is rotated. The rotary board 3 is provided with a plurality of installation parts 7 in which the guide member 9 is installed, and an installation part group 8 including the plurality of installation parts 7 is formed. The guide member 9 is installed in at least one installation part 7 in the installation part group 8.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a handle that can be used for a catheter or the like, and to a catheter equipped with the handle. [Background technology]

[0002] A medical catheter is usually composed of a tube for insertion into a body cavity such as a blood vessel, digestive tract, or ureter, and a handle provided on the proximal side of the tube. There are known catheters configured so that the distal part of the tube can be bent by operating the handle at hand, and in such a catheter, a wire is arranged in the lumen of the tube, the distal part of the wire is fixed to the distal part of the tube, and the proximal part of the wire is arranged inside the handle, so that the distal part of the tube can be bent by operating the handle. In a catheter with two wires, the distal part of the tube can be bent in one direction by pulling one of the two wires, and the distal part of the tube can be bent in the other direction by pulling the other wire.

[0003] For example, Patent Document 1 discloses a catheter having an operating hub attached to the proximal end side of a tube member and a rotating knob rotatably attached to the operating hub and connected to the proximal end of a wire, and this catheter is configured so that the orientation of the distal end of the tube member can be changed by rotating the rotating knob in a first direction or a second direction. Patent Document 2 discloses a catheter handle including a handle main body attached to the base end side of a catheter tube and a rotating plate rotatably attached to the handle main body and to which the base end of the wire is fixed, and this rotating plate has multiple arc-shaped or annular guide rails for defining the path of the wire within the rotating plate formed on the circumference of a concentric circle centered on the rotation axis. Patent document 3 discloses a catheter handle having a handle body, a rotating plate that is rotatably mounted relative to the handle body, and a wire guide member that is formed so as to be displaceable in the planar direction of the rotating plate. By displacing the wire guide member in the planar direction of the rotating plate, the handle is capable of freely adjusting the pulling length of the wire arranged along the wire guide member when the rotating plate is rotated. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2005-230471 A [Patent Document 2] JP 2013-017693 A [Patent Document 3] JP 2017-158655 A Summary of the Invention [Problem to be solved by the invention]

[0005] As described above, various handles for manipulating a tube provided on the distal side are conventionally known, but it is desirable to have a handle with a wide range of applications, such as one that allows the degree of bending and operability of the distal part of the tube to be adjusted as desired according to the preferences and needs of the user. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a handle for manipulating a tube provided on the distal side, which is capable of adjusting the movement and operability of the distal part of the tube. [Means for solving the problem]

[0006] The handle of the present invention, which is able to solve the above problems, and the catheter equipped with said handle are as follows. [1] A handle for operating a tube provided on the distal side, The handle body and A rotating disk rotatably provided with respect to the handle body; a wire having a distal portion disposed within the lumen of the tube and a proximal portion disposed within the handle; The rotating disk has a locking portion to which a proximal portion of the wire is fixed, and a guide member with which the wire comes into contact when the rotating disk is rotated, The turntable is provided with a plurality of mounting sections for the guide member, forming a mounting section group consisting of the plurality of mounting sections, and the guide member is mounted on at least one of the mounting sections in the mounting section group. [2] A first wire and a second wire are provided as the wires, As the locking portion, a first locking portion to which a proximal portion of the first wire is fixed and a second locking portion to which a proximal portion of the second wire is fixed are provided, As the guide members, a first guide member with which the first wire comes into contact when the rotary disk is rotated in one direction, and a second guide member with which the second wire comes into contact when the rotary disk is rotated in the other direction are provided, As the installation section, a first installation section for installing the first guide member and a second installation section for installing the second guide member are provided, As the installation section group, a first installation section group consisting of a plurality of the first installation sections and a second installation section group consisting of a plurality of the second installation sections are formed, A handle as described in [1], wherein the first guide member is installed in at least one of the first mounting portions of the first mounting portion group, and the second guide member is installed in at least one of the second mounting portions of the second mounting portion group. [3] A handle as described in [1] or [2], wherein the mounting portion is a recess. [4] The handle according to any one of [1] to [3], wherein the guide member is installed at some of the installation sections among the group of installation sections. [5] The handle described in any one of [1] to [4], wherein the guide member is removably installed on the installation portion. [6] A handle described in any of [1] to [5], wherein the maximum pulling length of the wire when the turntable is rotated can be changed by changing the selection of the installation part at which the guide member is installed from the group of installation parts. [7] A handle described in any one of [1] to [6], which is a handle for a catheter. [8] A catheter having a handle as described in [7] and a tube whose proximal portion is connected to the handle. Effect of the Invention

[0007] The handle of the present invention is configured so that the guide member can be selectively installed from a plurality of installation parts included in the installation part group of the turntable. As a result, when the handle is operated to rotate the turntable, the path of the wire on the turntable can be changed depending on the installation location of the guide member on the installation part. Therefore, by using the handle of the present invention, the movement and operability of the tube when the turntable is rotated can be adjusted. In addition, by appropriately selecting the installation part where the guide member is installed according to the specifications of the tube, the movement of the distal part of the tube can be appropriately controlled, and the handle can be used by connecting tubes of various specifications. [Brief description of the drawings]

[0008] [Figure 1] 1 shows an example of a catheter with a handle, illustrating a top view of the catheter. [Diagram 2] FIG. 2 is a plan view of the main part of a handle provided on the catheter shown in FIG. 1. [Diagram 3] FIG. 3 shows a plan view of the internal structure of the handle shown in FIG. 2. [Figure 4] FIG. 4 is a cross-sectional view of the handle shown in FIG. 2 taken along line IV-IV. [Diagram 5] FIG. 4 is a plan view of the handle shown in FIG. 3 in a state in which the rotating disk is rotated to pull the wire. [Figure 6A] FIG. 4 is a plan view of the internal structure of the handle shown in FIG. 3 in which the installation position of the guide member is changed. [Figure 6B] FIG. 4 is a plan view of the internal structure of the handle shown in FIG. 3 in which the installation position of the guide member is changed. [Figure 7A] 13 shows another example of the handle configuration, and is a plan view of the internal structure of the main part of the handle. [Figure 7B] FIG. 7B is a plan view of the internal structure of the handle shown in FIG. 7A in which the installation position of the guide member is changed. [Figure 7C] FIG. 7B is a plan view of the internal structure of the handle shown in FIG. 7A in which the installation position of the guide member is changed. [Figure 8A] 13 shows another example of the handle configuration, and is a plan view of the internal structure of the main part of the handle. [Figure 8B] FIG. 8B is a plan view of the internal structure of the handle in which the installation position of the guide member is changed in the handle shown in FIG. 8A. [Figure 9] 1 shows another example of a catheter with a handle, showing an overall plan view of the catheter. [Figure 10] FIG. 10 is a plan view of the main part of a handle provided on the catheter shown in FIG. [Figure 11] FIG. 11 shows a plan view of the internal structure of the handle shown in FIG. [Figure 12] FIG. 11 shows a cross-sectional view of the handle shown in FIG. 10 along line XII-XII. [Figure 13A] FIG. 12 is a plan view of the handle shown in FIG. 11 in a state where the rotating disk is rotated clockwise to pull the first wire. [Figure 13B] FIG. 12 is a plan view of the handle shown in FIG. 11 in a state where the rotating disk is rotated counterclockwise to pull the second wire. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The present invention relates to a handle for operating a tube provided on the distal side. The proximal part of the tube is connected to a handle, and the distal part of the tube can be bent by operating the handle on the hand side. An example of an article having such a tube and handle is a medical catheter. A catheter is composed of a tube for insertion into a body lumen such as a blood vessel, a digestive tract, or a ureter, and a handle provided on the proximal side of the tube. The distal part of the tube can be bent by fixing the distal part of a wire arranged in the lumen of the tube to the tube and the proximal part to the handle, and operating the handle to pull the wire toward the handle. The handle of the present invention is designed to adjust the pull amount of the wire when operating the handle, i.e., the maximum pulling length, and to adjust the operability of the handle when pulling the wire, thereby enabling the handle to be operated according to the user's preference. In addition, it can be used by connecting tubes of various specifications, thereby expanding the range of application of the handle.

[0010] The handle of the present invention will be specifically described below based on the following embodiment, taking a catheter as an example, but the present invention is not limited to the following embodiment, and can be modified as appropriate within the scope of the above and below, and all of these are included in the technical scope of the present invention. In addition, hatching and component symbols may be omitted in each drawing for convenience, but in such cases, the specification and other drawings should be referred to. Furthermore, the dimensions of various components in the drawings may differ from the actual dimensions, since priority is given to contributing to understanding the features of the present invention.

[0011] The overall configuration of a catheter with a handle will be described with reference to Figure 1. A catheter 11 according to an embodiment of the present invention has a handle 1 and a tube 12 whose proximal portion is connected to the handle 1. The tube 12 is provided on the distal side of the handle 1. The catheter 11 is used for treatment or examination, for example, by inserting the tube 12 into a body cavity such as a patient's blood vessel or digestive tract.

[0012] The catheter 11 is defined as having a proximal side and a distal side relative to the extending direction of the tube 12, and the direction extending from the proximal side to the distal side is referred to as the longitudinal direction. In the catheter 11, the proximal side refers to the direction toward the user's hand, and the distal side refers to the opposite direction to the proximal side, i.e., the direction toward the treatment target. The longitudinal direction, distal side, and proximal side are also defined in the tube 12 and the handle 1 in the same manner.

[0013] The tube 12 has a flexible tubular structure, and can be made of synthetic resins such as polyolefin resins (e.g., polyethylene and polypropylene), polyamide resins (e.g., nylon), polyester resins (e.g., PET), aromatic polyether ketone resins (e.g., PEEK), polyether polyamide resins, polyurethane resins, polyimide resins, and fluorine-based resins (e.g., PTFE, PFA, and ETFE), or metals such as stainless steel, carbon steel, and nickel-titanium alloys. Metal materials can also be used as metal wires embedded in the synthetic resin tube. The length of the tube 12 in the longitudinal direction is several times to several tens of times longer than the length of the handle 1 in the same direction, and is, for example, about 500 mm to 1200 mm. The outer diameter of the tube 12 may be, for example, about 0.6 mm to 5 mm.

[0014] The tube 12 has an internal lumen, and may be either a single lumen structure having one internal lumen or a multi-lumen structure having multiple internal lumens. The tube 12 may also have a coaxial structure in which multiple coaxial lumens are provided.

[0015] A wire 6 for manipulating the tube 12 is disposed in the inner cavity of the tube 12. The wire 6 is provided, for example, to control the bending of the distal portion of the tube 12. In this case, it is preferable that the distal portion of the wire 6 is fixed to the distal portion of the tube 12, for example, the distal 1 / 3 portion of the tube 12. A conducting wire, an optical fiber, an endoscope, etc. may be disposed in the inner cavity of the tube 12, and an inner cavity for inserting a guide wire or another treatment tool, or an inner cavity for passing a drug, a contrast agent, or any fluid may be provided.

[0016] The handle 1 is provided on the proximal side of the tube 12, and when assembled into the catheter 11, the proximal portion of the wire 6 disposed in the lumen of the tube 12 is connected to the handle 1. The distal portion of the wire 6 is disposed in the lumen of the tube 12, and the proximal portion of the wire 6 is disposed in the handle 1.

[0017] One embodiment of the structure of the handle 1 will be described with reference to Figures 2 to 5. Figure 2 shows a plan view of the main part of the handle provided in the catheter shown in Figure 1, Figure 3 shows a plan view of the internal structure of the handle shown in Figure 2, Figure 4 shows a cross-sectional view taken along line IV-IV of the handle shown in Figure 2, and Figure 5 shows a plan view of the handle shown in Figure 3 in a state in which the rotating disk is rotated to pull the wire.

[0018] The handle 1 has a handle body 2 and a rotating plate 3 that is rotatably provided relative to the handle body 2. The rotating plate 3 has a rotation axis 5 that is perpendicular to the longitudinal and lateral directions of the handle 1, and is formed so as to be rotatable about the rotation axis 5 on a plane formed by the longitudinal and lateral directions.

[0019] In the handle 1, the longitudinal direction is determined based on the extension direction of the catheter 11, and a proximal side and a distal side are determined with respect to the longitudinal direction. The width direction means the direction perpendicular to the longitudinal direction. The extension direction of a plane formed by the longitudinal direction and the width direction is called the planar direction. The extension direction of the rotation axis 5 is called the rotation axis direction. The handle 1 has an upper side and a lower side with respect to the rotation axis direction, and the rotation axis direction corresponds to the thickness direction of the handle 1. Figure 2 shows an external view of the handle 1 as seen from above.

[0020] The handle body 2 supports the turntable 3, and a user can operate the handle 1 by holding the handle body 2. The handle 1 is preferably configured such that the handle body 2 includes a support portion for the turntable 3, a grip portion, and a connection portion with the tube 12. In the handle body 2, the support portion for the turntable 3 means a portion where the handle body 2 overlaps with the turntable 3 in a plan view of the handle 1 (a state in which a plane formed by the longitudinal and width directions is viewed from above), and the portion proximal to this is the grip portion. In the handle body 2, the connection portion with the tube 12 is preferably provided distal to the support portion of the turntable 3.

[0021] In FIG. 4, the handle body 2 is arranged to sandwich the rotating platen 3 from both the upper and lower sides in the rotation axis direction, but the handle body 2 may be provided on only one side of the rotating platen 3. In the former case, the handle body 2 is composed of, for example, a first handle member 2A arranged on the lower side of the rotating platen 3 and a second handle member 2B arranged on the upper side of the rotating platen 3, and the rotating platen 3 is arranged between the first handle member 2A and the second handle member 2B. In the latter case, the rotating platen 3 is exposed and arranged on the surface of the handle body 2. FIG. 3 shows a plan view of the handle 1 shown in FIG. 2 with the second handle member 2B of the handle body 2 and the top cover of the rotating platen 3 removed. The handle body 2 can be composed of, for example, a synthetic resin.

[0022] It is preferable that the turntable 3 is formed as a housing, and the proximal portion of the wire 6 is disposed in the internal space of the housing. In this case, an insertion port 10 for the wire 6 is provided in the turntable 3, and the proximal portion of the wire 6 is introduced into the inside of the turntable 3 through the insertion port 10. It is preferable that the housing constituting the turntable 3 is formed by combining two or more members.

[0023] The rotating disk 3 is rotatably provided relative to the handle body 2, and a proximal portion of the wire 6 is fixed to the rotating disk 3. The rotating disk 3 is provided with a locking portion 4 for fixing the proximal portion of the wire 6, and the proximal portion of the wire 6 is fixed to the locking portion 4. It is preferable that the proximal end portion of the wire 6 (for example, a portion within 20 mm distal from the proximal end of the wire 6) is fixed to the locking portion 4. The wire 6 can be fixed to the locking portion 4 by any known joining means such as adhesion, welding, crimping, fitting, screwing, tying, etc. The rotating disk 3 can be formed, for example, from a synthetic resin.

[0024] In a plan view of the turntable 3, the wire 6 may be arranged on only one side of the rotation axis 5 of the turntable 3, or on both sides. The handle 1 may be used, for example, for a single-direction type catheter in which the distal portion of the tube 12 is bent in one direction, or for a bidirectional type catheter in which the distal portion of the tube 12 is bent in one direction and the other direction. The handle 1 shown in Figures 2 and 3 has one locking portion 4 on the turntable 3 and is used for a single-direction type catheter.

[0025] The turntable 3 preferably includes an operating unit that can be rotated from the outside of the handle 1. The operating unit is provided exposed on the outside of the handle 1, and is formed so that a user can touch the operating unit to rotate the turntable 3. The operating unit is formed, for example, so as to constitute a part of the outer edge of the turntable 3. The operating unit may be formed to include a protruding part that protrudes outward from the rotation shaft 5, and at least a part of the protruding part may be configured to be exposed from the handle body 2.

[0026] The turntable 3 has a guide member 9. The guide member 9 defines the path of the wire 6 on the turntable 3, and the wire 6 comes into contact with the guide member 9 when the turntable 3 is rotated. The wire 6 is preferably disposed so as to come into contact with the outer circumferential side of the guide member 9 relative to the rotation shaft 5. As will be described later, the guide member 9 is mounted on a mounting portion 7 provided on the turntable 3.

[0027] The planar shape of the guide member 9 (the shape of the guide member 9 in a plan view when the guide member 9 is installed on the turntable 3) is not particularly limited, and examples of such shapes include a circle, an ellipse, an oval, a semicircle, a polygon, a crescent, and an irregular shape. It is preferable that at least a part of the outer edge of the guide member 9 is curved, which prevents the wire 6 from getting caught on the guide member 9 and allows smooth operation of the turntable 3. The guide member 9 can be made of, for example, a synthetic resin.

[0028] By providing the guide member 9, when the turntable 3 is rotated, the length of the path of the wire 6 on the turntable 3 changes, and the wire 6 arranged in the lumen of the tube 12 can be pulled proximally. As shown in FIG. 5, by rotating the turntable 3 clockwise, the length of the path of the wire 6 on the turntable 3 increases, and the wire 6 can be pulled proximally. By pulling the wire 6 in this manner, the distal portion of the tube 12 can be bent. In the single-direction type handle 1, the rotatable angle range of the turntable 3 is preferably 30° or more, more preferably 45° or more, and is preferably 90° or less, and more preferably 75° or less.

[0029] The turntable 3 is provided with a plurality of mounting portions 7 for mounting the guide members 9. The mounting portions 7 are provided at a plurality of locations in the planar direction of the turntable 3. The mounting portions 7 are provided on the main surface of the turntable 3, i.e., the surface of the turntable 3 extending in the planar direction, and when the turntable 3 is formed as a housing, it is preferable that the mounting portions 7 are provided on the inner main surface (main surface facing the internal space) of the turntable 3 which is the housing. In the drawings, the mounting portions 7 are formed as recesses.

[0030] A plurality of installation sections 7 are provided on the turntable 3, forming an installation section group 8 consisting of the plurality of installation sections 7. The guide member 9 is installed in at least one installation section 7 of the installation section group 8. The guide member 9 is configured to be selectively installed in one or more installation sections 7 included in the installation section group 8. By changing the selection of the installation section 7 in which the guide member 9 is installed from the installation section group 8, when the turntable 3 is rotated, the path of the wire 6 on the turntable 3 (the route through which the wire 6 passes) can be changed according to the installation location of the guide member 9 on the installation section 7. As a result, the maximum pulling length of the wire 6 when the turntable 3 is rotated can be changed, and the relationship between the rotation angle of the turntable 3 and the pulling length of the wire 6 can be changed. This makes it possible to arbitrarily adjust the degree of bending and operability of the distal part of the tube 12 when the turntable 3 is rotated according to the user's preferences and needs. In addition, the length and diameter of the tube 12 of the catheter 11 may differ depending on the treatment application, but by using the handle 1, the movement of the distal part of the tube 12 can be appropriately controlled by appropriately selecting the installation part 7 for installing the guide member 9 according to the specifications of the tube 12, and the handle 1 can be used to connect tubes 12 of various specifications. This can expand the range of application of the handle 1. The maximum pulling length of the wire 6 means the pulling length of the wire 6 when the turntable 3 is rotated to the maximum within the rotatable angle range.

[0031] In the handle 1 shown in Figs. 2 to 5, three installation sections 7 are provided on the rotating platen 3, and the installation section group 8 is formed from the three installation sections 7. Three installation sections 7 are provided in a line in the radial direction (or width direction) of the rotating platen 3, and a guide member 9 is installed in the central installation section 7. The radial direction means the direction away from the rotation shaft 5 on the rotating platen 3. In contrast, Figs. 6A and 6B show an example in which the installation location of the guide member 9 on the installation section 7 is changed on the same rotating platen 3. In Fig. 6A, the guide member 9 is installed on the installation section 7 on the most radially inner side of the installation section group 8, and in Fig. 6B, the guide member 9 is installed on the installation section 7 on the most radially outer side of the installation section group 8. As can be seen from Figs. 3, 6A, and 6B, the path of the wire 6 on the rotating platen 3 changes depending on the installation location of the guide member 9 on the installation section 7. By installing the guide member 9 on the installation section 7 on the radially outer side, the path of the wire 6 on the rotating platen 3 is increased. This makes it possible to change the maximum pulling length of the wire 6 when the turntable 3 is rotated. In the turntable 3 shown in Figures 3, 6A, and 6B, the guide member 9 is installed at the installation portion 7 on the outer side in the radial direction, so that the maximum pulling length of the wire 6 when the turntable 3 is rotated can be increased. This makes it possible to adjust the operability of the handle 1 as desired.

[0032] One installation section group 8 is provided for one wire 6. The installation section 7 constituting one installation section group 8 is capable of contacting the one wire 6 when the guide member 9 is installed, and in this state, the wire 6 can be pulled by rotating the turntable 3. It is preferable that one installation section group 8 is provided on one side in the width direction of the turntable 3 when the turntable 3 is in a neutral state, i.e., when the wire 6 is not being pulled.

[0033] It is preferable that one guide member 9 can be installed in each of the multiple installation sections 7 constituting the installation section group 8. In other words, it is preferable that the guide member 9 installed in the multiple installation sections 7 constituting the installation section group 8 is a common one. This allows one guide member 9 to be installed in any installation section 7 included in the installation section group 8, making it easy to install the guide member 9 in any installation section 7.

[0034] 3, 6A and 6B, the installation section group 8 is preferably composed of a plurality of installation sections 7 at different distances from the rotation axis 5 of the turntable 3. If the installation section group 8 is configured in this manner, the maximum pulling length of the wire 6 when the turntable 3 is rotated can be changed by changing the selection of the installation section 7 at which the guide member 9 is installed from the installation section group 8.

[0035] As shown in FIG. 7A to FIG. 7C, the installation section group 8 may be composed of a plurality of installation sections 7 provided at different positions in the longitudinal direction of the handle 1 on the turntable 3. FIG. 7A to FIG. 7C show another configuration example of the handle 1, in which two installation sections 7 are provided on the turntable 3, and the installation section group 8 is formed from the two installation sections 7. On the turntable 3, two installation sections 7 are provided side by side in the longitudinal direction of the handle 1. If the installation section group 8 is configured in this manner, the relationship between the rotation angle when the turntable 3 is rotated and the pulling length of the wire 6 can be changed by changing the selection of the installation section 7 that installs the guide member 9 from the installation section group 8. The positions of the plurality of installation sections 7 described here are defined when the turntable 3 is in a neutral state.

[0036] In FIG. 7A and FIG. 7B, the guide member 9 is installed on one of the two installation parts 7, and in FIG. 7C, the guide member 9 is installed on both of the two installation parts 7. In FIG. 7A and FIG. 7B, regardless of which of the installation parts 7 arranged in the longitudinal direction the guide member 9 is installed on, the path of the wire 6 on the turntable 3 is almost the same, and the maximum pulling length of the wire 6 when the turntable 3 is rotated is also almost the same, but the relationship between the rotation angle when the turntable 3 is rotated and the pulling length of the wire 6 can be changed. This makes it possible to adjust, for example, the relationship between the bendability of the distal part of the tube 12 and the operability of the handle 1. On the other hand, in FIG. 7C, the guide member 9 is installed on all of the installation parts 7 arranged in the longitudinal direction, which increases the path of the wire 6 on the turntable 3. Therefore, the maximum pulling length of the wire 6 when the turntable 3 is rotated can be increased.

[0037] The installation section group 8 may be composed of a plurality of installation sections 7 provided at different positions in the radial direction (or width direction) and a plurality of installation sections 7 provided at different positions in the longitudinal direction on the turntable 3. FIGS. 8A and 8B show another example of the configuration of the handle 1, in which a plurality of installation sections 7 are provided side by side in the radial direction and side by side in the longitudinal direction on the turntable 3. In FIG. 8A, guide members 9 are provided on two installation sections 7 located on the inner side in the radial direction, and in FIG. 9B, guide members 9 are provided on two installation sections 7 located on the outer side in the radial direction. By providing the guide members 9 in this way, the difference in the length of the path of the wire 6 on the turntable 3 can be made larger, and the maximum pulling length of the wire 6 when the turntable 3 is rotated can be changed more significantly.

[0038] In the single direction type handle 1, the arrangement of the installation parts 7 in the installation part group 8 and the installation locations of the guide members 9 are not limited to the embodiment shown in the drawings, and various variations are possible.

[0039] The mounting portion 7 is not particularly limited as long as it can mount the guide member 9 on the turntable 3, but is preferably a recessed portion for convenience, as shown in the drawings. The recessed portion is formed by being recessed into the main surface of the turntable 3. If the mounting portion 7 is formed as a recessed portion, the mounting portion 7 is formed so as not to protrude from the main surface of the turntable 3. Therefore, when the guide member 9 is mounted on only some of the mounting portions 7 in the mounting portion group 8, the mounting portions 7 on which the guide member 9 is not mounted do not protrude from the main surface of the turntable 3, and the wire 6 is prevented from getting caught on the mounting portion 7.

[0040] In the above case, it is preferable that the guide member 9 has a protrusion that can be inserted into the recess. The protrusion of the guide member 9 may be fitted into or screwed into the recess. The guide member 9 may be formed in a rod shape, and in this case, the part of the rod-shaped guide member 9 that is inserted into the recess can be considered as the protrusion.

[0041] The planar shape of the installation portion 7 is not particularly limited, and examples of such shapes include a circle, an ellipse, and a polygon. When the installation portion 7 is formed from a recess, the ratio L / D of the maximum length L of the installation portion 7 in the planar direction to the depth D of the installation portion 7 is preferably 2.0 or less, more preferably 1.5 or less, even more preferably 1.0 or less, and even more preferably 0.8 or less. The lower limit of the ratio L / D is not particularly limited, and may be, for example, 0.1 or more, 0.2 or more, 0.3 or more, or 0.5 or more.

[0042] The installation portion 7 and the guide member 9 may be provided with magnets, and the guide member 9 may be installed on the installation portion 7 by magnetic force. In this case as well, the installation portion 7 may be formed so as not to protrude from the main surface of the turntable 3.

[0043] The size of the guide member 9 in a plan view, specifically, the size of the guide member 9 in a plan view when the guide member 9 is installed on the rotating disk 3, is preferably not too large. For example, the maximum length of the guide member 9 in the planar direction is preferably 15 mm or less, more preferably 10 mm or less, and even more preferably 8 mm or less. This makes it easy to significantly change the path of the wire 6 depending on the installation location of the guide member 9 in the installation section 7. In addition, when multiple guide members 9 are installed, it becomes easy to install the multiple guide members 9 without contacting each other. The lower limit of the maximum length of the guide member 9 in the planar direction is, for example, preferably 1 mm or more, more preferably 2 mm or more, and even more preferably 3 mm or more, which improves the handleability of the guide member 9.

[0044] It is preferable that the size of the installation portion 7 in a plan view is not too large, and for example, the maximum length of the installation portion 7 in the planar direction is preferably 8 mm or less, more preferably 5 mm or less, and even more preferably 3 mm or less. This allows more installation portions 7 to be provided on the turntable 3, and makes it possible to finely adjust the installation position of the guide member 9. The lower limit of the maximum length of the installation portion 7 in the planar direction is, for example, preferably 0.5 mm or more, and more preferably 1 mm or more.

[0045] The guide member 9 is preferably removably installed on the installation section 7. This makes it easy to adjust the degree of bending of the distal part of the tube 12 and the operability when the turntable 3 is rotated according to the user's preference. In addition, when the installation location of the guide member 9 is determined when the handle 1 is manufactured, the guide member 9 may be installed in the installation section 7 so as not to be removable when the handle 1 is used. In this case, the guide member 9 is removable from the installation section 7 during manufacturing, so that the installation location of the guide member 9 can be determined arbitrarily during manufacturing, and after the installation location of the guide member 9 is determined, the guide member 9 may be fixed to the installation section 7 with an adhesive or the like.

[0046] It is preferable that the guide member 9 is installed in some of the installation sections 7 of the installation section group 8. Therefore, it is preferable that the guide member 9 is not installed in all of the installation sections 7 that constitute the installation section group 8. In other words, it is preferable that the guide member 9 is installed in some of the installation section group 8 and not installed in the other sections. This makes it possible to arrange the multiple installation sections 7 closely, and makes it easy to precisely change the path of the wire 6 depending on the installation location of the guide member 9 in the installation section 7 and to precisely control the relationship between the rotation angle when the turntable 3 is rotated and the pulling length of the wire 6.

[0047] Another embodiment of the handle will be described with reference to Figs. 9 to 13B. Fig. 9 shows another example of a catheter equipped with a handle, and is a plan view of the entire catheter, Fig. 10 shows a plan view of the main part of the handle provided in the catheter shown in Fig. 9, Fig. 11 shows a plan view of the internal structure of the handle shown in Fig. 10, Fig. 12 shows a cross-sectional view of the handle shown in Fig. 10 along line XII-XII, and Figs. 13A and 13B show plan views of the handle shown in Fig. 11 in a state in which the rotating disk is rotated clockwise or counterclockwise to pull the wire. In the following description, descriptions of parts that overlap with those described above will be omitted.

[0048] The handle 1 shown in Figures 8 to 13B is used in a bidirectional type catheter that bends the distal portion of the tube 12 in one direction and the other, and is provided with a first wire 6A and a second wire 6B as wires, and is provided with locking portions, installation portions, and guide members for the first wire 6A and the second wire 6B, respectively.

[0049] The first wire 6A and the second wire 6B each have a distal portion disposed in the lumen of the tube 12 and a proximal portion disposed in the handle 1, and the rotating disk 3 has a first locking portion 4A to which the proximal portion of the first wire 6A is fixed, a second locking portion 4B to which the proximal portion of the second wire 6B is fixed, a first guide member 9A against which the first wire 6A abuts when the rotating disk 3 is rotated, and a second guide member 9B against which the second wire 6B abuts when the rotating disk 3 is rotated. The first wire 6A abuts against the first guide member 9A when the rotating disk 3 is rotated to one side, and the second wire 6B abuts against the second guide member 9B when the rotating disk 3 is rotated to the other side.

[0050] The turntable 3 is provided with a plurality of first installation sections 7A of the first guide member 9A, and a plurality of second installation sections 7B of the second guide member 9B. A first installation section group 8A is formed from the plurality of first installation sections 7A, and the first guide member 9A is installed in at least one first installation section 7A of the first installation section group 8A. A second installation section group 8B is formed from the plurality of second installation sections 7B, and the second guide member 9B is installed in at least one second installation section 7B of the second installation section group 8B.

[0051] For details about the first wire 6A and the second wire 6B, please refer to the description of wire 6 above, for details about the first engagement portion 4A and the second engagement portion 4B, please refer to the description of engagement portion 4 above, for details about the first installation portion 7A and the second installation portion 7B, please refer to the description of installation portion 7 above, for details about the first installation portion group 8A and the second installation portion group 8B, please refer to the description of installation portion group 8 above, and for details about the first guide member 9A and the second guide member 9B, please refer to the description of guide member 9 above.

[0052] When the handle 1 shown in FIG. 10 is rotated clockwise around the turntable 3 as shown in FIG. 13A, the length of the path of the first wire 6A on the turntable 3 increases, and the first wire 6A can be pulled proximally. By pulling the first wire 6A in this way, the distal portion of the tube 12 can be bent in one direction. On the other hand, when the handle 1 shown in FIG. 10 is rotated counterclockwise around the turntable 3 as shown in FIG. 13B, the length of the path of the second wire 6B on the turntable 3 increases, and the second wire 6B can be pulled proximally. By pulling the second wire 6B in this way, the distal portion of the tube 12 can be bent in the other direction.

[0053] In the bi-directional type handle 1, the rotatable angle range of the turntable 3 is preferably 45° or more, more preferably 60° or more, and is preferably 150° or less, and more preferably 120° or less. In addition, when the turntable 3 is in a neutral position as shown in Fig. 10, it is preferable that the first installation part group 8A is provided on one side in the width direction of the turntable 3, and the second installation part group 8B is provided on the other side in the width direction of the turntable 3.

[0054] The handle 1 shown in Fig. 8 to Fig. 13B can change the path of the first wire 6A and the path of the second wire 6B on the turntable 3 (the route through which the first wire 6A passes and the route through which the second wire 6B passes) according to the installation location of the first guide member 9A on the first installation section 7A and the installation location of the second guide member 9B on the second installation section 7B when the turntable 3 is rotated by changing the selection of the first installation section 7A in which the first guide member 9A is installed from the first installation section group 8A and changing the selection of the second installation section 7B in which the second guide member 9B is installed from the second installation section group 8B. As a result, it is possible to change the maximum pulling length of the first wire 6A and the maximum pulling length of the second wire 6B when the turntable 3 is rotated, and to change the relationship between the rotation angle of the turntable 3 and the pulling length of the first wire 6A, and the relationship between the rotation angle of the turntable 3 and the pulling length of the second wire 6B. This makes it possible to arbitrarily adjust the degree of bending of the distal portion of the tube 12 and the operability when the turntable 3 is rotated according to the user's preferences and needs.

[0055] In a bidirectional type handle 1, the arrangement of the first mounting portion 7A in the first mounting portion group 8A and the installation location of the first guide member 9A, and the arrangement of the second mounting portion 7B in the second mounting portion group 8B and the installation location of the second guide member 9B can be varied in various ways as shown in Figures 7A to 8B, and are not limited to the aspects shown in the drawings.

[0056] The handle of the present invention has been described above, but the handle of the present invention is not limited to one that controls the bending of the distal part of the tube, so long as it can displace the wire placed in the lumen of the tube provided on the distal side of the handle to the distal or proximal side in the lumen of the tube. For example, the handle may be one that can insert and remove the wire from the distal end of the tube by operating the handle. Alternatively, the handle may be used in a catheter configured such that a treatment tool such as a knife or snare is attached to the distal end of the wire and the treatment tool attached to the distal end of the wire can be inserted and removed from the distal end of the tube by operating the handle. [Explanation of symbols]

[0057] 1: Handle 2: Handle body, 2A: First handle member, 2B: Second handle member 3: Turntable 4: Locking part, 4A: First locking part, 4B: Second locking part 5: Rotation axis 6: Wire, 6A: First Wire, 6B: Second Wire 7: Installation part, 7A: 1st installation part, 7B: 2nd installation part 8: Installation part group, 8A: 1st installation part group, 8B: 2nd installation part group 9: guide member, 9A: first guide member, 9B: second guide member 10: Insertion port 11: Catheter 12: Tube

Claims

1. A handle for operating a tube provided on the distal side, The handle body and A rotating disk rotatably provided with respect to the handle body; a wire having a distal portion disposed within the lumen of the tube and a proximal portion disposed within the handle; The rotating disk has a locking portion to which a proximal portion of the wire is fixed, and a guide member with which the wire comes into contact when the rotating disk is rotated, A handle in which a plurality of mounting sections for the guide member are provided on the turntable, a mounting section group is formed consisting of the plurality of mounting sections, and the guide member is mounted on at least one of the mounting sections of the mounting section group.

2. A first wire and a second wire are provided as the wires, As the locking portion, a first locking portion to which a proximal portion of the first wire is fixed and a second locking portion to which a proximal portion of the second wire is fixed are provided, As the guide members, a first guide member with which the first wire comes into contact when the rotary disk is rotated in one direction, and a second guide member with which the second wire comes into contact when the rotary disk is rotated in the other direction are provided, As the installation section, a first installation section for installing the first guide member and a second installation section for installing the second guide member are provided, As the installation section group, a first installation section group consisting of a plurality of the first installation sections and a second installation section group consisting of a plurality of the second installation sections are formed, The handle of claim 1, wherein the first guide member is installed on at least one of the first mounting portions of the first mounting portion group, and the second guide member is installed on at least one of the second mounting portions of the second mounting portion group.

3. The handle of claim 1 , wherein the mounting portion is a recess.

4. The handle according to claim 1 , wherein the guide member is provided at some of the mounting portions of the mounting portion group.

5. The handle according to claim 1 , wherein the guide member is removably mounted on the mounting portion.

6. The handle according to claim 1 , wherein the maximum pulling length of the wire when the rotating disk is rotated can be changed by changing the selection of the installation portion at which the guide member is installed from the installation portion group.

7. The handle according to any one of claims 1 to 6, which is a handle for a catheter.

8. A handle according to claim 7; and a tube having a proximal portion connected to the handle.

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