Catheter handle and catheter having the same

Abstract

To provide a catheter handle which can finely adjust a displacement range of a slider, and a catheter having the same.SOLUTION: There is provided a handle for operating a tube of a catheter, the handle has: a handle body 2; a slider 3 which is provided in a lumen of the handle body 2, and can be displaced in a longer direction; and a linear member whose distal portion is arranged in the lumen of the tube, and whose proximal portion is coupled to the slider 3. An inner face of the handle body 2 has: a first holding part 11A; and a second holding part 11B. At least one of the first holding part 11A and the second holding part 11B has a stopper 21 held thereon. The slider 3 has: a first contact part 4A; and a second contact part 4B. The first contact part 4A and the second contact part 4B are deviated in a longer direction. The slider 3 is regulated from being displaced to a proximal side by contacting of any one of the first and second contact parts 4A, 4B to the stopper 21 held by the first holding part 11A or the second holding part 11B.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to a handle for use in a catheter and a catheter equipped with the handle. [Background technology]

[0002] A catheter is usually composed of a tube for insertion into a body cavity such as a blood vessel, a digestive tract, or a urinary tract, and a handle provided on the proximal side of the tube. A catheter configured so that the distal end of the tube can be bent by operating the handle on the hand side is known. In such a catheter, a wire is arranged in the lumen of the tube, the distal end of the wire is fixed to the distal end of the tube, and the proximal end of the wire is arranged inside the handle, and the distal end of the tube can be bent by operating the handle. For example, a slider is arranged inside the handle, a wire is connected to the slider, and by operating the handle to displace the slider in the longitudinal direction of the handle, the wire arranged in the lumen of the tube can be pulled proximally or pushed distally, thereby bending the distal end of the tube.

[0003] As an example of such a catheter handle, Patent Document 1 discloses a catheter handle for controlling the deflection of an end of a catheter including a first wire and a second wire, the catheter handle having a slide base with a slide chamber, an adjustment knob rotatably connected to the slide base and having an internal right-handed thread and an internal left-handed thread formed in its inner cavity, a first slide disposed within the slide chamber and having a first wire coupled thereto and having an external right-handed thread formed therein, and a second slide disposed within the slide chamber and having a second wire coupled thereto and having an external left-handed thread formed therein, the internal thread of the adjustment knob engages with the external thread of the slide, and the first slide and the second slide are configured to be displaced in opposite directions to each other within the slide chamber by rotation of the adjustment knob.

[0004] Patent Document 2 discloses a catheter handle having two control wires whose tip ends are connected to a tip region of a catheter, the catheter handle comprising a housing, a sliding assembly disposed within the housing and configured to translate linearly within the housing, and a control knob rotatably provided relative to the housing, the proximal ends of the two control wires being disposed within the housing, the sliding assembly being configured to operate each of the two control wires separately by linearly translating the sliding assembly, and the catheter being configured such that by rotating the control knob in a first rotational direction, the sliding assembly is displaced toward the tip side to apply tension to one of the two control wires, thereby deflecting the catheter in a first deflection direction, and by rotating the control knob in a second rotational direction, the sliding assembly is displaced toward the base end side to apply tension to the other of the two control wires, thereby deflecting the catheter in a second deflection direction.

[0005] Patent Document 3 discloses a catheter handle for manipulating a flexible tip portion of a catheter tube, the catheter handle having a housing, a rotation operating unit rotatable around the axial direction of the housing, first and second sliders arranged inside the housing and movable in the axial direction, a first anchor arranged to be movable toward and away from the first slider, to which a base end of a first operating wire for deflecting the tip portion of the tube in a first direction is fixed and movable in the axial direction, a second anchor arranged to be movable toward and away from the second slider, to which a base end of a second operating wire for deflecting the tip portion of the tube in a second direction is fixed and movable in the axial direction, and a feed mechanism that converts the rotational motion of the rotation operating unit into linear motion that moves the first and second sliders an equal distance in opposite axial directions. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2006-187606 A [Patent Document 2] Special Publication No. 2015-523892 [Patent Document 3] JP 2018-99480 A Summary of the Invention [Problem to be solved by the invention]

[0007] It is desirable for the catheter to be able to appropriately control the movement of the distal end of the tube by operating the handle. For example, in the case of the catheters disclosed in Patent Documents 1 to 3, a wire is disposed in the lumen of the tube, the distal end of the wire is fixed to the distal end of the tube, and the proximal end of the wire is connected to a slider provided inside the handle, but it is desirable to be able to finely adjust the displacement range of the slider. This makes it possible to appropriately control the movement of the distal end of the tube by operating the handle. As a result, the catheter allows for more accurate treatment, and also makes it possible to prevent the body cavity from being accidentally damaged when the catheter is inserted into the body cavity for use.

[0008] The present invention has been made in consideration of the above circumstances, and its object is to provide a catheter handle equipped with a slider inside, which allows the displacement range of the slider to be finely adjusted, and a catheter equipped with the catheter handle. [Means for solving the problem]

[0009] The catheter handle of the present invention, which is able to solve the above-mentioned problems, and a catheter equipped with the catheter handle, are as follows. [1] A handle for operating a catheter tube, a handle body having an internal lumen extending longitudinally from a proximal side to a distal side; A slider disposed in an inner cavity of the handle body and displaceable in the longitudinal direction; a linear member having a distal portion disposed in the lumen of the tube and a proximal portion directly or indirectly connected to the slider; The inner surface of the handle body is provided with a first holding portion composed of concave and convex portions alternately arranged in the longitudinal direction, and a second holding portion composed of concave and convex portions alternately arranged in the longitudinal direction, The first retaining portion is provided at a different circumferential position on the inner surface of the handle body relative to the second retaining portion, A stopper is held in the recess of at least one of the first holding portion and the second holding portion, the slider has a first contact portion capable of contacting the stopper held by the first holding portion and a second contact portion capable of contacting the stopper held by the second holding portion, the first contact portion and the second contact portion are arranged to be shifted in the longitudinal direction by a length shorter than an arrangement pitch of the recesses in the first holding portion and the second holding portion in the longitudinal direction, A catheter handle in which the slider is limited in its proximal displacement by either the first abutment portion or the second abutment portion abutting against the stopper held by the first holding portion or the stopper held by the second holding portion. [2] A handle for operating a catheter tube, a handle body having an internal lumen extending longitudinally from a proximal side to a distal side; A slider disposed in an inner cavity of the handle body and displaceable in the longitudinal direction; a linear member having a distal portion disposed in the lumen of the tube and a proximal portion directly or indirectly connected to the slider; The inner surface of the handle body is provided with a third retaining portion composed of concave and convex portions alternately arranged in the longitudinal direction, and a fourth retaining portion composed of concave and convex portions alternately arranged in the longitudinal direction, The third retaining portion is provided at a different circumferential position on the inner surface of the handle body relative to the fourth retaining portion, a stopper is held in the recess of at least one of the third holding portion and the fourth holding portion; the slider has a third contact portion capable of contacting the stopper held by the third holding portion and a fourth contact portion capable of contacting the stopper held by the fourth holding portion, the third contact portion and the fourth contact portion are arranged to be shifted in the longitudinal direction by a length shorter than an arrangement pitch of the recesses in the third holding portion and the fourth holding portion in the longitudinal direction, A catheter handle in which the slider is limited in its distal displacement by either the third abutment portion or the fourth abutment portion abutting against the stopper held by the third retaining portion or the stopper held by the fourth retaining portion. [3] A handle for operating a catheter tube, a handle body having an internal lumen extending longitudinally from a proximal side to a distal side; A slider disposed in an inner cavity of the handle body and displaceable in the longitudinal direction; a linear member having a distal portion disposed in the lumen of the tube and a proximal portion directly or indirectly connected to the slider; The inner surface of the handle body is provided with a first retaining portion composed of concave portions and convex portions alternately arranged in the longitudinal direction, a second retaining portion composed of concave portions and convex portions alternately arranged in the longitudinal direction, a third retaining portion composed of concave portions and convex portions alternately arranged in the longitudinal direction, and a fourth retaining portion composed of concave portions and convex portions alternately arranged in the longitudinal direction, The first retaining portion is provided at a different circumferential position on the inner surface of the handle body relative to the second retaining portion, The third retaining portion is provided at a different circumferential position on the inner surface of the handle body relative to the fourth retaining portion, A stopper is held in the recess of at least one of the first holding portion and the second holding portion, a stopper is held in the recess of at least one of the third holding portion and the fourth holding portion; the slider has a first abutment portion capable of contacting the stopper held by the first holding portion, a second abutment portion capable of contacting the stopper held by the second holding portion, a third abutment portion capable of contacting the stopper held by the third holding portion, and a fourth abutment portion capable of contacting the stopper held by the fourth holding portion, the first contact portion and the second contact portion are arranged to be shifted in the longitudinal direction by a length shorter than an arrangement pitch of the recesses in the first holding portion and the second holding portion in the longitudinal direction, the third contact portion and the fourth contact portion are arranged to be shifted in the longitudinal direction by a length shorter than an arrangement pitch of the recesses in the third holding portion and the fourth holding portion in the longitudinal direction, A catheter handle in which the slider is restricted in its proximal displacement by either the first abutment portion or the second abutment portion abutting against the stopper held by the first holding portion or the stopper held by the second holding portion, and is restricted in its distal displacement by either the third abutment portion or the fourth abutment portion abutting against the stopper held by the third holding portion or the stopper held by the fourth holding portion. [4] A catheter handle as described in [1] or [3], wherein the longitudinal arrangement pitch of the recesses in the first retaining portion and the second retaining portion is 0.5 mm or more and 4.0 mm or less. [5] A catheter handle described in any one of [2] to [4], wherein the longitudinal arrangement pitch of the recesses in the third holding portion and the fourth holding portion is 0.5 mm or more and 4.0 mm or less. [6] The handle has a rotation axis extending in the longitudinal direction and a rotation knob rotatably provided with respect to the handle body, The rotation knob has an inner cavity extending in the longitudinal direction, and a portion of the slider is disposed in the inner cavity. A first engagement portion is provided on an outer surface of the slider, and a second engagement portion that engages with the first engagement portion is provided on an inner surface of the rotation knob, The catheter handle according to any one of [1] to [5], wherein at least one of the first engagement portion and the second engagement portion is arranged to extend in a spiral shape. [7] The handle has a rotation axis extending in the longitudinal direction and a rotation knob rotatably provided with respect to the handle body, The slider has an inner cavity extending in the longitudinal direction, and a portion of the rotation knob is disposed in the inner cavity; A first engagement portion is provided on an inner surface of the slider, and a second engagement portion that engages with the first engagement portion is provided on an outer surface of the rotary knob, The catheter handle according to any one of [1] to [5], wherein at least one of the first engagement portion and the second engagement portion is arranged to extend in a spiral shape. [8] The handle has a rotating member having a rotation axis extending perpendicular to the longitudinal direction, A first engagement portion is provided on the slider, and a second engagement portion that engages with the first engagement portion is provided on an outer surface of the rotating member, The catheter handle according to any one of [1] to [5], wherein the slider having the first engagement portion functions as a rack, and the rotating member having the second engagement portion functions as a pinion. [9] A catheter comprising a catheter handle according to any one of [1] to [8] and a tube provided distally of the catheter handle. Effect of the Invention

[0010] The catheter handle and catheter of the present invention are configured such that the first and second contact parts of the slider are shifted in the longitudinal direction, and the slider is configured such that the proximal displacement is limited by one of the first and second contact parts contacting a stopper held by the first holding part inside the handle or a stopper held by the second holding part. This allows the proximal displacement range of the slider to be finely adjusted. Alternatively, the catheter handle and catheter of the present invention are configured such that the third and fourth contact parts of the slider are shifted in the longitudinal direction, and the slider is configured such that the distal displacement is limited by one of the third and fourth contact parts contacting a stopper held by the third holding part inside the handle or a stopper held by the fourth holding part. This allows the distal displacement range of the slider to be finely adjusted. [Brief description of the drawings]

[0011] [Figure 1] 1 shows an example of the configuration of a catheter equipped with a catheter handle, and shows an overall view of the catheter. [Diagram 2] FIG. 2 is a plan view of the internal structure of a catheter handle provided in the catheter shown in FIG. 1. [Diagram 3] FIG. 3 is a plan view of the internal structure of the catheter handle shown in FIG. 2 excluding the slider, shaft, stopper, and linear member. [Figure 4] FIG. 3 is a partially enlarged view of the internal structure of the catheter handle shown in FIG. 2 excluding the stopper. [Diagram 5] FIG. 5 shows an enlarged view of a holding portion of the internal structure of the catheter handle shown in FIG. 4. [Figure 6] 1 shows an example of the configuration of a stopper, and is a perspective view of the stopper. [Figure 7] 13A and 13B show another example of the configuration of the stopper, and are perspective views of the stopper. [Figure 8] FIG. 7 is a plan view showing an example of the internal structure of the catheter handle shown in FIG. 4 with the stopper shown in FIG. 6 installed in the holding portion. [Figure 9]8 shows another example of a plan view of the internal structure of the catheter handle shown in FIG. 4, in which the stopper shown in FIG. 7 is installed in the holding portion. [Figure 10] 3 shows a cross-sectional view of the catheter handle shown in FIG. 2 along the line XX. [Figure 11] 3 shows a modified plan view of the internal structure of the catheter handle shown in FIG. 2. [Figure 12] FIG. 12 is a plan view showing the internal structure of the catheter handle shown in FIG. 11, with a slider partially cut away along the longitudinal direction. [Figure 13] 1 shows another example of a catheter configuration with a catheter handle, and shows an overall view of the catheter. [Figure 14] FIG. 14 shows a plan view of the internal structure of a catheter handle provided in the catheter shown in FIG. 13. [Figure 15] FIG. 13 shows another example of a catheter handle, and is a plan view of the internal structure of the catheter handle. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] The catheter handle of the present invention and a catheter equipped with said handle will be specifically described below based on the following embodiment, but the present invention is not limited to the following embodiment, and can be modified as long as it meets the purpose described 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. In addition, the dimensions of various components in the drawings may differ from the actual dimensions because priority is given to helping understand the features of the present invention.

[0013] The configuration of a catheter equipped with a catheter handle will be described with reference to Fig. 1. A catheter 31 according to an embodiment of the present invention has a catheter handle 1 (hereinafter sometimes referred to as "handle") and a tube 32 provided on the distal side of the handle 1. The catheter 31 is used for treatment or examination, for example, by inserting the tube 32 into a body cavity such as a patient's blood vessel or digestive tract.

[0014] In the present invention, the proximal side of the catheter 31 refers to the direction toward the user's hand relative to the extension direction of the catheter 31, and the distal side refers to the opposite direction to the proximal side, i.e., the direction toward the treatment target.

[0015] The tube 32 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 polyetherketone resins (e.g., PEEK), polyetherpolyamide resins, polyurethane resins, polyimide resins, and fluororesins (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 32 in the longitudinal direction (near-far 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 32 may be, for example, about 0.6 mm to 5 mm.

[0016] The tube 32 has an inner lumen, and may be either a single lumen structure having one lumen inside or a multi-lumen structure having multiple lumen. The tube 32 may have a coaxial structure having multiple coaxial lumens. A wire for operating the tube 32 is disposed in the inner lumen of the tube 32. The wire is provided, for example, to control the bending of the distal end of the tube 32. In this case, it is preferable that the distal end of the wire is fixed to the distal end of the tube 32, for example, the distal 1 / 3 part of the tube 32. A conducting wire, an optical fiber, an endoscope, etc. may be disposed in the inner lumen of the tube 32, and an inner lumen for inserting a guide wire or another treatment tool, or an inner lumen for passing a drug, a contrast agent, or any fluid may be provided.

[0017] The handle 1 is provided on the proximal side of the tube 32, and when assembled into a catheter, the proximal end of a wire disposed in the lumen of the tube 32 is connected to the handle 1.

[0018] The details of the handle 1 will be described with reference to Figs. 2 to 10. Figs. 2 to 10 show an example of the configuration of a catheter handle provided in the catheter shown in Fig. 1. Fig. 2 shows an example of a plan view of the internal structure of the catheter handle, Fig. 3 shows a plan view of the internal structure of the catheter handle shown in Fig. 2 excluding the slider, shaft, stopper, and linear member, Fig. 4 shows a partially enlarged view of the internal structure of the catheter handle shown in Fig. 2 excluding the stopper, Fig. 5 shows an enlarged view of the holding part of the internal structure of the catheter handle shown in Fig. 4, and Fig. 10 shows a XX cross-sectional view of the catheter handle shown in Fig. 2. Figs. 6 and 7 show an example of the configuration of the stopper, and Figs. 8 and 9 show plan views of the internal structure of the catheter handle shown in Fig. 4 with the stopper installed in the holding part. Note that Fig. 10 shows a cross-sectional view of the handle including the cut-out part of the handle body.

[0019] The handle 1 has a handle body 2 having an inner cavity extending in the longitudinal direction x, a slider 3 disposed in the inner cavity of the handle body 2 and provided displaceable in the longitudinal direction x, and a linear member 7 having a distal portion disposed in the inner cavity of a tube 32 and a proximal portion directly or indirectly connected to the slider 3. The handle 1 has a proximal side and a distal side defined based on the proximal side and distal side of a catheter 31, and the longitudinal direction x is defined as a direction extending from the proximal side to the distal side or from the distal side to the proximal side. In addition, a radial direction and a circumferential direction are defined as directions perpendicular to the longitudinal direction x.

[0020] The handle body 2 has an inner cavity extending in the longitudinal direction x. The inner cavity of the handle body 2 is preferably formed in a shape long in the longitudinal direction x, and preferably has a part formed in a cylindrical (columnar) or polygonal prism shape with the longitudinal direction x as its axis.

[0021] A slider 3 is disposed in the inner cavity of the handle body 2. The slider 3 is provided in the inner cavity of the handle body 2 so as to be displaceable in the longitudinal direction x. The handle 1 is configured so that the slider 3 is displaced in the longitudinal direction x by operating the handle 1 from the outside of the handle 1 when in use, and therefore the handle 1 preferably has an operating part for the slider 3. The operating part for the slider 3 is preferably provided such that a part of it is disposed in the inner cavity of the handle body 2 and the other part is disposed outside the handle body 2, i.e. exposed to the outside of the handle 1. This allows the slider 3 to be displaced in the longitudinal direction x by operating the handle 1 from the outside.

[0022] 2 and 3, a rotation knob 6 is provided as an operating part. The rotation knob 6 has a rotation axis extending in the longitudinal direction x, and is provided rotatably relative to the handle body 2. The rotation knob 6 is preferably disposed in at least a part of the inner cavity of the handle body 2, and it is preferable that only a part of the rotation knob 6 in the longitudinal direction x is disposed in the inner cavity of the handle body 2.

[0023] It is preferable that the rotation knob 6 has an inner cavity extending in the longitudinal direction x, and that a part of the slider 3 is disposed in this inner cavity. It is preferable that the inner cavity of the rotation knob 6, together with the inner cavity of the handle body 2, form the internal space of the handle 1. It is preferable that the inner cavity of the rotation knob 6 has a part formed in a cylindrical shape centered on the longitudinal direction x. It is preferable that the inner cavity of the rotation knob 6 communicates with the inner cavity of the handle body 2 in the longitudinal direction x, that the inner cavity of the rotation knob 6 and the inner cavity of the handle body 2 integrally form the internal space of the handle 1, and that the slider 3 is disposed in this internal space.

[0024] At least one of the distal side and the proximal side of the handle body 2 is preferably open, and the rotating knob 6 is inserted from the distal side or the proximal side of the open-formed handle body 2, and the rotating knob 6 is preferably disposed in the inner cavity of the handle body 2. On the other hand, the rotating knob 6 is preferably inserted into the handle body 2, and the proximal side or the distal side located in the inner cavity of the handle body 2 is preferably formed open. As a result, the inner cavity of the handle body 2 and the inner cavity of the rotating knob 6 form the inner space of the handle 1 integrally. In Figs. 2 and 3, the distal side of the handle body 2 is formed open, the proximal side of the rotating knob 6 is formed open, and the rotating knob 6 is inserted into the inner cavity of the handle body 2 from the distal side of the handle body 2. In the handle 1, the handle body 2 and the rotating knob 6 are exposed to the outside, and the handle 1A can be operated, for example, by holding the handle body 2 with one hand and holding the rotating knob 6 with the other hand and rotating it relative to the handle body 2.

[0025] The handle 1A is formed so that the slider 3 is displaced in the longitudinal direction x by rotating the rotary knob 6 about the longitudinal direction x. To this end, a first engagement portion 14 is provided on the outer surface of the slider 3, and a second engagement portion 15 that engages with the first engagement portion 14 is provided on the inner surface of the rotary knob 6, and at least one of the first engagement portion 14 and the second engagement portion 15 is arranged to extend in a spiral shape. In this manner, the first engagement portion 14 is formed on the outer surface of the slider 3, and the second engagement portion 15 is formed on the inner surface of the rotary knob 6, so that the rotational movement of the rotary knob 6 about the longitudinal direction x can be converted into a translational movement of the slider 3 in the longitudinal direction x.

[0026] The first engagement portion 14 and the second engagement portion 15 can be formed by a combination of a convex portion and a groove. That is, it is preferable that one of the first engagement portion 14 and the second engagement portion 15 is a convex portion and the other is a groove. When the first engagement portion 14 or the second engagement portion 15 is formed as a groove, it is preferable that the groove is formed so as to extend continuously in a spiral shape. The groove may be a bottomed groove or a through groove, but it is preferable that the groove is a bottomed groove in terms of ensuring the strength of the slider 3 or the rotating knob 6. On the other hand, when the first engagement portion 14 or the second engagement portion 15 is formed as a convex portion, it may be provided as a convex stripe that extends continuously in a spiral shape, or may be provided as a convex stripe that extends intermittently in a spiral shape, or may be provided as a simple protrusion. In the drawings, the first engagement portion 14 provided on the slider 3 is formed as a convex portion (a convex stripe that extends in a spiral shape), and the second engagement portion 15 provided on the rotating knob 6 is formed as a groove.

[0027] The first engagement portion 14 and / or the second engagement portion 15 may be formed so as to extend continuously or intermittently in a spiral shape for one or more revolutions, or may be formed so as to extend less than one revolution. At least one of the first engagement portion 14 and the second engagement portion 15 is preferably formed so as to extend continuously or intermittently in a spiral shape for one or more revolutions, more preferably formed so as to extend two or more revolutions, and even more preferably formed so as to extend three or more revolutions. On the other hand, the other of the first engagement portion 14 and the second engagement portion 15 may be formed so as to extend continuously or intermittently in a spiral shape for less than one revolution, for example, may be provided so as to extend only half a revolution in a spiral shape. In the handle 1 shown in the drawings, the first engagement portion 14 provided on the slider 3 is formed so as to extend in a spiral shape for one or more revolutions, and the second engagement portion 15 provided on the rotating knob 6 is formed so as to extend in a spiral shape for less than one revolution.

[0028] In the handle 1A, in order to prevent the slider 3 from rotating together with the rotary knob 6 when the rotary knob 6 is rotated about the longitudinal direction x, it is preferable that a third engagement portion 16 is provided on the outer surface of the slider 3, a fourth engagement portion 17 that engages with the third engagement portion 16 is provided on the inner surface of the handle body 2, and at least one of the third engagement portion 16 and the fourth engagement portion 17 is formed to extend in the longitudinal direction x (see Figs. 3 and 10). This allows the slider 3 to be displaced along the longitudinal direction x without rotating about the longitudinal direction x.

[0029] The third engagement portion 16 and the fourth engagement portion 17 can be formed by a combination of a convex portion and a groove. That is, it is preferable that one of the third engagement portion 16 and the fourth engagement portion 17 is a convex portion and the other is a groove. In the handle 1A shown in the drawings, the third engagement portion 16 provided on the outer surface of the slider 3 is formed as a convex portion, and the fourth engagement portion 17 provided on the inner surface of the handle body 2 is formed as a groove. The third engagement portion 16 or the fourth engagement portion 17 formed as a groove is preferably formed so as to extend in the longitudinal direction x, and more preferably formed so as to extend continuously in the longitudinal direction x. On the other hand, the third engagement portion 16 or the fourth engagement portion 17 formed as a convex portion may or may not be formed so as to extend in the longitudinal direction x.

[0030] A shaft 5 extending in the longitudinal direction x is preferably provided in the inner cavity of the handle body 2. The shaft 5 is preferably fixed to the handle body 2 so as not to rotate or move relative to the handle body 2, and may be formed integrally with the handle body 2. The shaft 5 may be provided so as to extend distally and / or proximally beyond the handle body 2.

[0031] It is preferable that the tube 32 is connected to the distal side of the shaft 5. The connection portion between the shaft 5 and the tube 32 may be in the internal space of the handle 1, may be distal to the internal space of the handle 1, or may be outside the handle 1. The shaft 5 and the tube 32 may also be formed integrally.

[0032] The shaft 5 may be formed in a solid shape or may be formed in a hollow shape. It is preferable that the shaft 5 is formed in a hollow shape, and the inner cavity of the shaft 5 communicates with the inner cavity of the tube 32. This allows a treatment tool to be delivered to a treatment target part from the proximal side of the catheter 31 through the inner cavity of the shaft 5 and the inner cavity of the tube 32, or a drug or a contrast agent to be injected. Examples of treatment tools include an electrode catheter, an ablation catheter, a mapping catheter, a balloon catheter, a microcatheter, forceps, a laser probe, a fiberscope, a high-frequency treatment tool, an electric hydraulic impact crushing probe, and the like. In order to enable the insertion of such a treatment tool, it is preferable that the shaft 5 has a proximal opening on the outside of the handle 1. The shaft 5 may have a branched portion, and a switching cock may be provided at the branched portion of the shaft 5. This allows, for example, an insertion port for a treatment tool and an injection port for a drug or the like to be provided separately.

[0033] A linear member 7 is connected to the slider 3. The distal portion of the linear member 7 is disposed in the lumen of the tube 32, and the proximal portion is disposed in the lumen of the handle body 2. The distal portion of the linear member 7 serves as a wire for controlling the tube 32. The distal end of the linear member 7, i.e., the portion in the vicinity thereof including the distal end, is preferably fixed to the distal end of the tube 32. The distal end of the linear member 7 can be defined as, for example, a portion within 100 mm proximally from the distal end of the linear member 7. The distal end of the tube 32 can be defined as, for example, a portion within 100 mm proximally from the distal end of the tube 32.

[0034] A proximal portion of the linear member 7 disposed in the lumen of the handle body 2 is directly or indirectly connected to the slider 3. The proximal portion of the linear member 7 may be directly connected to the slider 3, or may be indirectly connected to the slider 3 by attaching the proximal portion of the linear member 7 to a fixture provided on the slider 3. The proximal portion of the linear member 7 is displaced in the longitudinal direction x together with the slider 3.

[0035] It is preferable that the linear member 7 extends from the inner cavity of the shaft 5 or the tube 32 to the outside thereof in the internal space of the handle 1, and is connected to the slider 3. By manipulating the handle 1 to displace the slider 3 in the longitudinal direction x, the linear member 7 arranged in the inner cavity of the tube 32 can be pulled proximally or pushed distally, thereby controlling the bending of the distal end portion of the tube 32, for example.

[0036] As the linear member 7, metal wires such as stainless steel, carbon steel, and nickel-titanium alloy, and resin wires (i.e., fiber materials) formed from synthetic resins such as polyamide resins (e.g., nylon), polyolefin resins (e.g., polyethylene and polypropylene), polyester resins (e.g., PET), aromatic polyether ketone resins (e.g., PEEK), polyimide resins, aromatic polyamide resins (e.g., aramid), and fluorine-based resins (e.g., PTFE, PFA, FEP, and ETFE) can be used. These metal wires and resin wires may have a monofilament structure or a multifilament structure. The linear member 7 may be covered by a cylinder formed from a coil-shaped metal or synthetic resin.

[0037] It is desirable that the catheter 31 can appropriately control the movement of the distal end of the tube 32 by operating the handle 1. For example, if the bending of the distal end of the tube 32 is controlled by the handle 1, it is desirable that the bending range of the distal end of the tube 32 can be appropriately controlled. This allows for more accurate treatment and prevents the body cavity from being accidentally damaged when the catheter 31 is inserted into the body cavity for use. For this purpose, the handle 1 is configured so that a stopper 21 that limits the displacement range of the slider 3 in the longitudinal direction x can be installed inside the handle body 2. Specifically, as shown in Figs. 2 to 5, the handle 1 is configured so that a holding section 11 consisting of recesses 12 and protrusions 13 arranged alternately in the longitudinal direction x is provided on the inner surface of the handle body 2, and the stopper 21 is held by the holding section 11. The stopper 21 is provided so that a part of the slider 3 abuts against the stopper 21 when the slider 3 is displaced in the longitudinal direction x, and the slider 3 abuts against the stopper 21, thereby limiting the displacement range of the slider 3 in the longitudinal direction x. The slider 3 has an abutment portion 4 on its outer surface that abuts against the stopper 21 when displaced in the longitudinal direction x. In the handle 1 shown in the drawings, the abutment portion 4 is provided protruding from the outer surface of the slider 3, but the proximal end or distal end of the slider 3 may serve as the abutment portion 4.

[0038] As shown in Fig. 5, the holding portion 11 is configured by alternately arranging recesses 12 and protrusions 13 in the longitudinal direction x on the inner surface of the handle body 2. When viewed from inside the handle 1, the recesses 12 are formed to be recessed relative to the protrusions 13, i.e., the bottoms of the recesses 12 are formed to be positioned radially outward from the tops of the protrusions 13. When viewed from inside the handle 1, the protrusions 13 are formed to protrude relative to the recesses 12, i.e., the tops of the protrusions 13 are formed to be positioned radially inward from the bottoms of the recesses 12.

[0039] In one holding portion 11, it is preferable that a plurality of recesses 12 and a plurality of protrusions 13 are arranged, and for example, it is preferable that a plurality of protrusions 13 are arranged in a row in the longitudinal direction x, and a recess 12 is arranged between each of the plurality of arranged protrusions 13. It is preferable that a plurality of recesses 12 are arranged at approximately equal intervals in the longitudinal direction x, and it is preferable that a plurality of protrusions 13 are arranged at approximately equal intervals in the longitudinal direction x. The length in the longitudinal direction x of each recess 12 is preferably 0.8 times or more, more preferably 0.9 times or more, and preferably 1.2 times or less, and more preferably 1.1 times or less, of the length in the longitudinal direction x of each protrusion 13.

[0040] The number of recesses 12 included in one holding part 11 is preferably 2 or more, more preferably 3 or more, and even more preferably 4 or more. This makes it possible to finely control the displacement range of the slider 3 in the longitudinal direction x. The upper limit of the number of recesses 12 included in one holding part 11 is not particularly limited, but may be 15 or less, 12 or less, 10 or less, or 8 or less. The stopper 21 is held by the holding part 11 by being fitted into any of the recesses 12 of one holding part 11. Therefore, it is preferable that the number of recesses 12 included in one holding part 11 is greater than the number of protrusions 22 of the stopper 21, and this makes it possible to change the displacement range of the slider 3 in the longitudinal direction x by changing the position where the stopper 21 is installed in one holding part 11.

[0041] At least one of the proximal holding portion 11 (i.e., the holding portion 11 for holding the stopper 21 that limits the displacement of the slider 3 to the proximal side) and the distal holding portion 11 (i.e., the holding portion 11 for holding the stopper 21 that limits the displacement of the slider 3 to the distal side) may be provided on the inner surface of the handle body 2. Preferably, both the proximal holding portion 11 and the distal holding portion 11 are provided on the inner surface of the handle body 2. The proximal holding portion 11 is located proximally relative to the contact portion 4 of the slider 3 (specifically, the first contact portion 4A and the second contact portion 4B described later) when the slider 3 is displaced to the most distal side, and the distal holding portion 11 is located distally relative to the contact portion 4 of the slider 3 (specifically, the third contact portion 4C and the fourth contact portion 4D described later) when the slider 3 is displaced to the most proximal side.

[0042] The handle body 2 is provided with at least two retaining parts, a first retaining part 11A and a second retaining part 11B, as the retaining part 11 on the proximal side, i.e., the retaining part 11 for retaining a stopper 21 that limits the displacement of the slider 3 towards the proximal side. The first retaining part 11A is provided at a different circumferential position on the inner surface of the handle body 2 relative to the second retaining part 11B. When the handle 1 is in use, the retaining part 11 on the proximal side retains the stopper 21 in the recess 12 of at least one of the first retaining part 11A and the second retaining part 11B.

[0043] The first retaining portion 11A and the second retaining portion 11B are preferably provided at positions overlapping each other in the longitudinal direction x. The recess 12 of the first retaining portion 11A and the recess 12 of the second retaining portion 11B are preferably provided at approximately the same position in the longitudinal direction x. By forming the first retaining portion 11A and the second retaining portion 11B in this manner, it becomes easy to accurately set the displacement range of the slider 3 toward the proximal side. As a specific example of providing the recess 12 of the first retaining portion 11A and the recess 12 of the second retaining portion 11B at approximately the same position in the longitudinal direction x, the deviation in the longitudinal direction x between the distal end of the recess 12 of the first retaining portion 11A and the distal end of the recess 12 of the second retaining portion 11B is preferably 1 / 6 or less of the arrangement pitch in the longitudinal direction x of the recesses 12 in the first retaining portion 11A and the second retaining portion 11B, more preferably 1 / 8 or less, and even more preferably 1 / 10 or less.

[0044] The handle body 2 is provided with at least two holding parts, a third holding part 11C and a fourth holding part 11D, as the holding part 11 on the distal side, i.e., the holding part 11 for holding a stopper 21 that limits the distal displacement of the slider 3. The third holding part 11C is provided at a different circumferential position on the inner surface of the handle body 2 relative to the fourth holding part 11D. When the handle 1 is in use, the distal holding part 11 holds the stopper 21 in the recess 12 of at least one of the third holding part 11C and the fourth holding part 11D.

[0045] The third retaining portion 11C and the fourth retaining portion 11D are preferably provided at positions overlapping each other in the longitudinal direction x. The recess 12 of the third retaining portion 11C and the recess 12 of the fourth retaining portion 11D are preferably provided at approximately the same position in the longitudinal direction x. By forming the third retaining portion 11C and the fourth retaining portion 11D in this manner, it becomes easy to accurately set the displacement range of the slider 3 toward the distal side. As a specific example of providing the recess 12 of the third retaining portion 11C and the recess 12 of the fourth retaining portion 11D at approximately the same position in the longitudinal direction x, the deviation in the longitudinal direction x between the proximal end of the recess 12 of the third retaining portion 11C and the proximal end of the recess 12 of the fourth retaining portion 11D is preferably 1 / 6 or less of the arrangement pitch in the longitudinal direction x of the recesses 12 in the third retaining portion 11C and the fourth retaining portion 11D, more preferably 1 / 8 or less, and even more preferably 1 / 10 or less.

[0046] The stopper 21 is formed so as to be able to be fitted into the recess 12 of the holding portion 11, and is formed so as to be able to come into contact with the slider 3 when the slider 3 is displaced in the longitudinal direction x while being held by the holding portion 11, so that the shape of the stopper 21 is not particularly limited. A configuration example of the stopper 21 will be described with reference to Figs. 6 to 9. Figs. 6 and 7 show perspective views of the stopper 21 as a configuration example of the stopper 21. Fig. 8 shows an example in which the stopper 21 shown in Fig. 6 is held by the holding portion 11, and Fig. 9 shows an example in which the stopper 21 shown in Fig. 7 is held by the holding portion 11. In the internal structure of the handle 1 shown in Fig. 2, the stopper 21 shown in Fig. 6 is held by the holding portion 11.

[0047] 6 and 7, the stopper 21 has a protrusion 22 that fits into the recess 12 of the holding part 11, and a restricting part 23 that restricts the displacement of the slider 3 in the longitudinal direction x by contacting the slider 3. When the slider 3 is displaced in the longitudinal direction x, the abutting part 4 of the slider 3 abuts against the restricting part 23 of the stopper 21, thereby restricting the displacement range of the slider 3 in the longitudinal direction x.

[0048] The stopper 21 may have only one protrusion 22 or may have two or more protrusions 22. The stopper 21 shown in FIG. 6 has one protrusion 22, and the stopper 21 shown in FIG. 7 has two protrusions 22. The protrusions 22 preferably extend substantially parallel to the insertion direction of the holding part 11 into the recess 12, and may extend continuously or intermittently in that direction. In FIG. 7, two protrusions 22 are provided side by side in the longitudinal direction x when the stopper 21 is held by the holding part 11.

[0049] The distance in the longitudinal direction x between the protrusion 22 and the restricting portion 23 in a state where the stopper 21 is held by the holding portion 11 is not particularly limited, and the restricting portion 23 may be located away from the protrusion 22 in the longitudinal direction x as shown in FIG. 6, or the distance in the longitudinal direction x between the protrusion 22 and the restricting portion 23 may be 0 as shown in FIG. 7. The distance in the longitudinal direction x between the protrusion 22 and the restricting portion 23 in a state where the stopper 21 is held by the holding portion 11 means the distance in the longitudinal direction x from the distal end of the protrusion 22 (the distal end of the protrusion 22 on the most distal side when there are multiple protrusions 22) to the restricting portion 23 when the stopper 21 restricts the displacement of the slider 3 to the proximal side, that is, when the stopper 21 is installed in the first holding portion 11A or the second holding portion 11B, which is the proximal holding portion 11. When the stopper 21 limits the distal displacement of the slider 3, i.e., when the stopper 21 is installed in the third holding portion 11C or the fourth holding portion 11D, which is the distal holding portion 11, the distance in the longitudinal direction x between the protrusion 22 and the restricting portion 23 when the stopper 21 is held by the holding portion 11 means the distance in the longitudinal direction x from the proximal end of the protrusion 22 (or the proximal end of the protrusion 22 located most proximal in the case of multiple protrusions 22) to the restricting portion 23.

[0050] It is preferable that the distal end of the restricting portion 23 of the stopper 21 held by the first holding portion 11A and the distal end of the restricting portion 23 of the stopper 21 held by the second holding portion 11B can be placed at approximately the same position in the longitudinal direction x. As a specific example of the distal end of the restricting portion 23 of the stopper 21 held by the first holding portion 11A and the distal end of the restricting portion 23 of the stopper 21 held by the second holding portion 11B being at approximately the same position in the longitudinal direction x, the deviation in the longitudinal direction x between the distal end of the restricting portion 23 of the stopper 21 held by the first holding portion 11A and the distal end of the restricting portion 23 of the stopper 21 held by the second holding portion 11B is preferably 1 / 6 or less of the arrangement pitch in the longitudinal direction x of the recesses 12 in the first holding portion 11A and the second holding portion 11B, more preferably 1 / 8 or less, and even more preferably 1 / 10 or less.

[0051] It is preferable that the proximal end of the restricting portion 23 of the stopper 21 held by the third holding portion 11C and the proximal end of the restricting portion 23 of the stopper 21 held by the fourth holding portion 11D can be placed at approximately the same position in the longitudinal direction x. As a specific example of the proximal end of the restricting portion 23 of the stopper 21 held by the third holding portion 11C and the proximal end of the restricting portion 23 of the stopper 21 held by the fourth holding portion 11D being at approximately the same position in the longitudinal direction x, the deviation in the longitudinal direction x between the proximal end of the restricting portion 23 of the stopper 21 held by the third holding portion 11C and the proximal end of the restricting portion 23 of the stopper 21 held by the fourth holding portion 11D is preferably 1 / 6 or less, more preferably 1 / 8 or less, and even more preferably 1 / 10 or less of the arrangement pitch in the longitudinal direction x of the recesses 12 in the third holding portion 11C and the fourth holding portion 11D.

[0052] The stopper 21 is preferably formed so as to be insertable into the recess 12 of the holding part 11 from both one side and the other side in the extending direction of the protrusion 22. The stopper 21 shown in FIG. 6 and FIG. 7 is formed so as to be insertable into the recess 12 from the left front side of the drawing and from the right rear side of the drawing. The stopper 21 is preferably held in the holding part 11 in the same shape whether it is inserted into the recess 12 from one side or the other side in the extending direction of the protrusion 22. In order to form the stopper 21 in this way, it is preferable that the stopper 21 is formed in a shape that is rotationally symmetric, and specifically, it is preferable that the stopper 21 is formed in a two-fold symmetry that results in the same shape when rotated 180°. The stopper 21 is also preferably formed in a shape having mutually orthogonal symmetric planes, and one of the symmetric planes preferably extends in the longitudinal direction x. By forming the stopper 21 in this manner, it is possible to use one type of stopper 21 to install the stopper 21 in both the first retaining portion 11A and the second retaining portion 11B, or to install the stopper 21 in both the third retaining portion 11C and the fourth retaining portion 11D.

[0053] The contact portion 4 of the slider 3 will be described in detail with reference to Figs. 4, 8 and 9. The slider 3 has, as the contact portion 4 that contacts the stopper 21 when displaced proximally, a first contact portion 4A that can contact the stopper 21 held by the first holding portion 11A and a second contact portion 4B that can contact the stopper 21 held by the second holding portion 11B. The first contact portion 4A may be formed so as to contact the stopper 21 held by the first holding portion 11A when the slider 3 is displaced proximally, and the second contact portion 4B may be formed so as to contact the stopper 21 held by the second holding portion 11B when the slider 3 is displaced proximally. The first contact portion 4A and the second contact portion 4B are arranged offset in the longitudinal direction x by a length shorter than the arrangement pitch of the recesses 12 in the first holding portion 11A and the second holding portion 11B in the longitudinal direction x, and the slider 3 is restricted in displacement to the proximal side by either the first contact portion 4A or the second contact portion 4B abutting against the stopper 21 held by the first holding portion 11A or the stopper 21 held by the second holding portion 11B. By forming the slider 3 in this manner, the range of displacement of the slider 3 to the proximal side can be finely adjusted.

[0054] For comparison, consider the case where the first contact portion 4A and the second contact portion 4B are provided at the same position in the longitudinal direction x in the slider 3. The proximal displacement range of the slider 3 is determined by the installation position of the stopper 21 on the first holding portion 11A or the second holding portion 11B. When the first contact portion 4A and the second contact portion 4B of the slider 3 are at the same position in the longitudinal direction x, the proximal displacement range of the slider 3 can be adjusted with the arrangement pitch of the recesses 12 of the first holding portion 11A or the second holding portion 11B, that is, the arrangement pitch of the recesses 12 arranged in a row in the longitudinal direction x, as the minimum unit. In other words, the proximal displacement range of the slider 3 cannot be adjusted with a length shorter than the arrangement pitch of the recesses 12 of the first holding portion 11A or the second holding portion 11B.

[0055] In contrast, in the handle 1, the first contact portion 4A and the second contact portion 4B of the slider 3 are arranged offset in the longitudinal direction x by a length shorter than the arrangement pitch of the recesses 12 of the first holding portion 11A and the second holding portion 11B, and the slider 3 is configured such that the displacement to the proximal side is limited by either the first contact portion 4A or the second contact portion 4B abutting against the stopper 21 held by the first holding portion 11A or the stopper 21 held by the second holding portion 11B. Therefore, the displacement range of the slider 3 to the proximal side can be adjusted by a length shorter than the arrangement pitch of the recesses 12 of the first holding portion 11A and the second holding portion 11B, and the displacement range of the slider 3 to the proximal side can be finely adjusted.

[0056] In Fig. 8 and Fig. 9, when the slider 3 is displaced proximally, the first abutment portion 4A of the slider 3 abuts against the stopper 21 held by the first holding portion 11A, and the displacement of the slider 3 to the proximal side is restricted. In Fig. 8 and Fig. 9, the stopper 21 does not have to be held by the second holding portion 11B in a state where the stopper 21 is held by the first holding portion 11A. On the other hand, in Fig. 8 and Fig. 9, when the stopper 21 held by the first holding portion 11A is removed and the slider 3 is displaced proximally, the second abutment portion 4B of the slider 3 abuts against the stopper 21 held by the second holding portion 11B, and the displacement of the slider 3 to the proximal side is restricted. The first abutment portion 4A and the second abutment portion 4B of the slider 3 are arranged with a length shorter than the arrangement pitch of the recesses 12 of the first retaining portion 11A and the second retaining portion 11B and are arranged offset in the longitudinal direction x. Therefore, by changing the installation positions of the stoppers 21 on the first retaining portion 11A and the second retaining portion 11B, it is possible to finely adjust the displacement range of the slider 3 toward the proximal side. As a specific example of the first abutment portion 4A and the second abutment portion 4B of the slider 3 being arranged with a shift in the longitudinal direction x and with a length shorter than the arrangement pitch of the recesses 12 of the first retaining portion 11A and the second retaining portion 11B, the shift in the longitudinal direction x of the first abutment portion 4A and the second abutment portion 4B of the slider 3 is preferably 1 / 3 to 2 / 3 of the arrangement pitch of the recesses 12 of the first retaining portion 11A and the second retaining portion 11B, more preferably 3 / 8 to 5 / 8, even more preferably 2 / 5 to 3 / 5, and particularly preferably 1 / 2.

[0057] The slider 3 may have, as the abutment portion 4 that abuts against the stopper 21 when displaced distally, a third abutment portion 4C that can abut against the stopper 21 held by the third holding portion 11C, and a fourth abutment portion 4D that can abut against the stopper 21 held by the fourth holding portion 11D. The third abutment portion 4C may be formed so as to abut against the stopper 21 held by the third holding portion 11C when the slider 3 is displaced distally, and the fourth abutment portion 4D may be formed so as to abut against the stopper 21 held by the fourth holding portion 11D when the slider 3 is displaced distally. The third contact portion 4C and the fourth contact portion 4D are arranged offset in the longitudinal direction x by a length shorter than the arrangement pitch of the recesses 12 in the third holding portion 11C and the fourth holding portion 11D in the longitudinal direction x, and the distal displacement of the slider 3 is restricted by either the third contact portion 4C or the fourth contact portion 4D abutting against the stopper 21 held by the third holding portion 11C or the stopper 21 held by the fourth holding portion 11D. By forming the slider 3 in this manner, the distal displacement range of the slider 3 can be finely adjusted.

[0058] For comparison, consider the case where the third contact portion 4C and the fourth contact portion 4D are provided at the same position in the longitudinal direction x in the slider 3. The distal displacement range of the slider 3 is determined by the installation position of the stopper 21 on the third holding portion 11C or the fourth holding portion 11D, but when the third contact portion 4C and the fourth contact portion 4D of the slider 3 are at the same position in the longitudinal direction x, the distal displacement range of the slider 3 can be adjusted with the arrangement pitch of the recesses 12 of the third holding portion 11C or the fourth holding portion 11D, that is, the arrangement pitch of the recesses 12 arranged in a row in the longitudinal direction x, as the minimum unit. In other words, the distal displacement range of the slider 3 cannot be adjusted with a length shorter than the arrangement pitch of the recesses 12 of the third holding portion 11C or the fourth holding portion 11D.

[0059] In contrast, in the handle 1, the third abutment portion 4C and the fourth abutment portion 4D of the slider 3 are arranged offset in the longitudinal direction x by a length shorter than the arrangement pitch of the recesses 12 of the third holding portion 11C and the fourth holding portion 11D, and the slider 3 is configured such that the distal displacement is limited by one of the third abutment portion 4C and the fourth abutment portion 4D abutting against the stopper 21 held by the third holding portion 11C or the stopper 21 held by the fourth holding portion 11D. Therefore, the distal displacement range of the slider 3 can be adjusted by a length shorter than the arrangement pitch of the recesses 12 of the third holding portion 11C and the fourth holding portion 11D, and the distal displacement range of the slider 3 can be finely adjusted.

[0060] In Fig. 8 and Fig. 9, when the slider 3 is displaced distally, the fourth abutment portion 4D of the slider 3 abuts against the stopper 21 held by the fourth holding portion 11D, and the displacement of the slider 3 distally is restricted. In Fig. 8 and Fig. 9, the stopper 21 does not have to be held by the third holding portion 11C in a state where the stopper 21 is held by the fourth holding portion 11D. On the other hand, in Fig. 8 and Fig. 9, when the stopper 21 held by the fourth holding portion 11D is removed and the slider 3 is displaced distally, the third abutment portion 4C of the slider 3 abuts against the stopper 21 held by the third holding portion 11C, and the displacement of the slider 3 distally is restricted. The third abutment portion 4C and the fourth abutment portion 4D of the slider 3 are arranged with a length shorter than the arrangement pitch of the recesses 12 of the third holding portion 11C and the fourth holding portion 11D and are arranged offset in the longitudinal direction x. Therefore, by changing the installation positions of the stoppers 21 on the third holding portion 11C and the fourth holding portion 11D, it is possible to finely adjust the displacement range of the slider 3 toward the distal side. As a specific example of the third abutment portion 4C and the fourth abutment portion 4D of the slider 3 being arranged with a shift in the longitudinal direction x and with a length shorter than the arrangement pitch of the recesses 12 of the third retaining portion 11C and the fourth retaining portion 11D, the shift in the longitudinal direction x of the third abutment portion 4C and the fourth abutment portion 4D of the slider 3 is preferably 1 / 3 to 2 / 3 of the arrangement pitch of the recesses 12 of the third retaining portion 11C and the fourth retaining portion 11D, more preferably 3 / 8 to 5 / 8, even more preferably 2 / 5 to 3 / 5, and particularly preferably 1 / 2.

[0061] In the drawings, the first contact portion 4A is located closer to the proximal side than the second contact portion 4B, but the second contact portion 4B may be located closer to the proximal side than the first contact portion 4A. The fourth contact portion 4D is located closer to the distal side than the third contact portion 4C, but the third contact portion 4C may be located closer to the distal side than the fourth contact portion 4D. The arrangement pitch of the recesses 12 means the separation distance in the longitudinal direction x between the distal ends (or proximal ends) of the recesses 12 adjacent in the longitudinal direction x (the length of the arrow P in FIG. 5), and the value of the arrangement pitch of the recesses 12 described above means the average pitch.

[0062] The arrangement pitch of the recesses 12 in the holding part 11 in the longitudinal direction x is preferably 0.5 mm or more and 4.0 mm or less. By forming the recesses 12 in one holding part 11 in this manner, it becomes easy to accurately and finely adjust the displacement range of the slider 3 in the longitudinal direction x. The arrangement pitch of the recesses 12 in the holding part 11 in the longitudinal direction x is more preferably 0.8 mm or more, more preferably 1.0 mm or more, more preferably 3.0 mm or less, and even more preferably 2.5 mm or less. In addition, the arrangement pitch of the recesses 12 in the longitudinal direction x in the first holding part 11A is preferably the same as the arrangement pitch of the recesses 12 in the longitudinal direction x in the second holding part 11B. The arrangement pitch of the recesses 12 in the longitudinal direction x in the third holding part 11C is preferably the same as the arrangement pitch of the recesses 12 in the longitudinal direction x in the fourth holding part 11D.

[0063] As shown in Fig. 2, in the handle 1A described above, one linear member 7 is disposed in the lumen of the tube 32, and this linear member 7 is connected to the slider 3, but two or more linear members 7 may be disposed in the lumen of the tube 32, and these linear members 7 may be connected to the slider 3. Examples of the configuration of a catheter handle configured in this way are shown in Figs. 11 and 12.

[0064] Figures 11 and 12 show another example of the configuration of a catheter handle provided in the catheter shown in Figure 1. Figure 11 shows a modified plan view of the internal structure of the catheter handle shown in Figure 2, and Figure 12 shows a plan view of the internal structure of the catheter handle shown in Figure 11, with the slider 3 partially cut away along the longitudinal direction x. In the explanation of the handle shown in Figures 11 and 12, explanations of parts that overlap with the above explanation will be omitted.

[0065] In the handle 1 (1B) shown in FIG. 11 and FIG. 12, the linear member 7 is bent on the proximal side and disposed so that both ends extend to the distal side. The linear member 7 has a first end as one end and a second end as the other end, and the portion including the first end is defined as the first portion 7A, the portion including the second end is defined as the second portion 7B, and the portion between the first portion 7A and the second portion 7B is defined as the middle portion 7C. The first end and the second end are defined as the one end and the other end when the linear member 7 is extended straight. Then, the linear member 7 is bent at the middle portion 7C, and at least a part of the middle portion 7C including the bent portion is disposed in the lumen of the handle body 2, and at least a part of the first portion 7A and the second portion 7B is disposed in the lumen of the tube 32.

[0066] The first portion 7A and the second portion 7B of the linear member 7 serve as wires for controlling the tube 32. It is preferable that the distal end portion of the first portion 7A, i.e., the portion adjacent thereto including the first end, and the distal end portion of the second portion 7B, i.e., the portion adjacent thereto including the second end, are fixed to the distal end portion of the tube 32. In this case, by operating the handle 1B and pulling the first portion 7A proximally, the distal end portion of the tube 32 can be bent to one side, and by pulling the second portion 7B proximally, the distal end portion of the tube 32 can be bent to the other side.

[0067] It is preferable that the intermediate portion 7C of the linear member 7 extends from the inner cavity of the rotation knob 6 to the inner cavity of the handle body 2. It is preferable that the linear member 7 is disposed in the inner cavity of the slider 3, i.e., in a through hole extending in the longitudinal direction x, at a portion overlapping with the slider 3 in the longitudinal direction x. Therefore, it is preferable that a gap extending in the longitudinal direction x (a gap penetrating the slider 3 in the longitudinal direction x) is formed between the inner surface of the through hole of the slider 3 and the shaft 5, and the linear member 7 is disposed in this gap.

[0068] In the handle 1B, an inversion guide 9 for guiding bending of the intermediate portion 7C of the linear member 7 is provided in the inner cavity of the handle body 2, and a part of the intermediate portion 7C of the linear member 7 abuts against the inversion guide 9. The inversion guide 9 is fixed to the handle body 2 and is provided so as not to rotate or move relative to the handle body 2 when the handle 1B is operated. The inversion guide 9 is provided on the proximal side of the slider 3 in the longitudinal direction x, and more specifically, is provided on the proximal side of the proximal end of the slider 3 when the slider 3 is displaced most proximally.

[0069] The linear member 7 is capable of displacing in the longitudinal direction x in the internal space of the handle 1, with a portion on the first end side (first portion 7A side) of the reversing guide 9 and a portion on the second end side (second portion 7B side) of the reversing guide 9 working together. Since the portion of the linear member 7 on the first end side of the reversing guide 9 is connected to the portion on the second end side of the reversing guide 9 via the portion where the portion is in contact with the reversing guide 9, the portion on the first end side of the reversing guide 9 can be displaced proximally, and the portion on the second end side of the reversing guide 9 can be displaced distally, and the portion on the first end side of the reversing guide 9 can be displaced proximally,

[0070] The linear member 7 is fixed to the slider 3 at a portion on the first end side of the abutting portion of the linear member 7 with the reversing guide 9. In FIG. 12, the linear member 7 is fixed to the slider 3 by a fixture 10 provided on the slider 3. As a result, when the rotating knob 6 is rotated about the longitudinal direction x, the slider 3 is displaced in the longitudinal direction x, and accordingly, the portion of the linear member 7 on the first end side of the reversing guide 9 can be displaced in the longitudinal direction x, and the portion of the linear member 7 on the second end side of the reversing guide 9 can be displaced in the opposite longitudinal direction x. As a result, the first portion 7A and the second portion 7B of the linear member 7 arranged in the lumen of the tube 32 can be pulled proximally or pushed distally, and, for example, the bending of the distal end of the tube 32 can be controlled. For example, by rotating the rotating knob 6 clockwise when viewed from the proximal side, the distal end of the tube 32 can be bent to one side, and by rotating the rotating knob 6 counterclockwise when viewed from the proximal side, the distal end of the tube 32 can be bent to the other side.

[0071] The linear member 7 is preferably fixed to the inner surface of the slider 3. In Fig. 12, a fixture 10 for the linear member 7 is provided on the inner surface of the slider 3, and the linear member 7 is fixed to this fixture 10, but the linear member 7 may be directly fixed to the inner surface of the slider 3 with an adhesive or the like. When the linear member 7 is directly fixed to the inner surface of the slider 3, the fixture 10 may not be necessary. Methods for fixing the linear member 7 to the fixture 10 or the inner surface of the slider 3 include adhesion with an adhesive, welding, fitting, caulking, tying, screwing, and the like.

[0072] When the slider 3 is displaced most proximally, a portion of the linear member 7 on the first end side from the contact portion with the reversing guide 9 is fixed to the slider 3. By fixing the linear member 7 to the slider 3 in this manner, the linear member 7 is fixed to the slider 3 at a portion on the first end side from the contact portion with the reversing guide 9, regardless of the displacement of the slider 3 in the longitudinal direction x. On the other hand, it is preferable that the linear member 7 is not fixed to the slider 3 at a portion on the second end side from the contact portion with the reversing guide 9, and in detail, it is preferable that the linear member 7 is not fixed to the slider 3 at a portion on the second end side from the contact portion with the reversing guide 9, when the slider 3 is displaced most proximally.

[0073] The first portion 7A, the second portion 7B, and the middle portion 7C of the linear member 7 may be made of the same material or different materials. It is preferable that the middle portion 7C is made of a different material from the first portion 7A and the second portion 7B. In Fig. 11 and Fig. 12, the linear member 7 has the middle portion 7C connected to the first portion 7A or the second portion 7B at the connection portion 8.

[0074] The intermediate portion 7C is preferably made of a flexible material so that it can be bent with a relatively small bending radius by the inversion guide 9. On the other hand, the first portion 7A and the second portion 7B are preferably made of a material with a relatively high rigidity because they are disposed in the inner cavity of the tube 32 and are required to transmit the movement of the linear member 7 in the handle 1 in the longitudinal direction x to the distal end of the tube 32 via the first portion 7A and the second portion 7B in an appropriate manner, and are not required to be more flexible than the intermediate portion 7C. Therefore, the intermediate portion 7C preferably has a bending rigidity smaller than that of the first portion 7A and the second portion 7B.

[0075] The intermediate portion 7C of the linear member 7 is preferably made of a fiber rope. This makes it easier to bend the intermediate portion 7C smoothly by the reversal guide 9 while ensuring the strength of the intermediate portion 7C. On the other hand, the first portion 7A and the second portion 7B of the linear member 7 are preferably made of a metal wire. This makes it easier to control the bending of the distal end portion of the tube 32 with good responsiveness by pulling the first portion 7A and the second portion 7B arranged in the lumen of the tube 32 proximally or pushing them distally. The first portion 7A and the second portion 7B may be a wire rope made of a metal material.

[0076] 11 and 12, the first contact portion 4A and the second contact portion 4B of the slider 3 are also arranged offset in the longitudinal direction x by a length shorter than the arrangement pitch of the recesses 12 of the first holding portion 11A and the second holding portion 11B, and the slider 3 is configured such that the displacement to the proximal side is limited by either the first contact portion 4A or the second contact portion 4B abutting against the stopper 21 held by the first holding portion 11A or the stopper 21 held by the second holding portion 11B. This makes it possible to finely adjust the displacement range of the slider 3 to the proximal side. In addition, the third contact portion 4C and the fourth contact portion 4D of the slider 3 are arranged with a shift in the longitudinal direction x by a length shorter than the arrangement pitch of the recesses 12 of the third holding portion 11C and the fourth holding portion 11D, and the slider 3 is configured such that the distal displacement is limited by one of the third contact portion 4C and the fourth contact portion 4D abutting against the stopper 21 held by the third holding portion 11C or the stopper 21 held by the fourth holding portion 11D. This makes it possible to finely adjust the distal displacement range of the slider 3. In the handle 1B, the stopper 21 provided on the first holding portion 11A or the second holding portion 11B can limit the range in which the first portion 7A of the linear member 7 is pulled proximally, and the stopper 21 provided on the third holding portion 11C or the fourth holding portion 11D can limit the range in which the second portion 7B of the linear member 7 is pulled proximally.

[0077] 1 to 12, the handles 1A and 1B are configured such that the rotating knob 6 has an inner cavity extending in the longitudinal direction x, a part of the slider 3 is disposed in the inner cavity of the rotating knob 6, and the slider 3 can be displaced in the longitudinal direction x by rotating the rotating knob 6 about the longitudinal direction x, but the mechanism for displacing the slider 3 in the longitudinal direction x is not limited to this configuration. Below, configuration examples of catheter handles of various forms will be described.

[0078] 13 and 14 show an example of the configuration of a catheter handle that can displace the slider 3 in the longitudinal direction x by a mechanism different from the handles 1A and 1B described above. FIG. 13 shows an overall view of a catheter equipped with a catheter handle, and FIG. 14 shows a plan view of the internal structure of the catheter handle provided in the catheter shown in FIG. 13. FIG. 14 shows a plan view in which the slider and the rotating knob are partially cut away along the longitudinal direction x. Note that in the description of the handles shown in FIG. 13 and FIG. 14, descriptions of parts that overlap with the above description will be omitted.

[0079] The handle 1 (1C) shown in FIG. 13 and FIG. 14 includes a slider 3 disposed in the inner cavity of the handle body 2 and displaceable in the longitudinal direction x, and a rotary knob 6 having a rotation axis extending in the longitudinal direction x and rotatable with respect to the handle body 2. The slider 3 has an inner cavity extending in the longitudinal direction x, and a part of the rotary knob 6 is disposed in the inner cavity. A first engagement portion 14 is provided on the inner surface of the slider 3, and a second engagement portion 15 that engages with the first engagement portion 14 is provided on the outer surface of the rotary knob 6, and at least one of the first engagement portion 14 and the second engagement portion 15 is disposed so as to extend in a spiral shape. In the handle 1C, unlike the handles 1A and 1B, the first engagement portion 14 is provided on the inner surface of the slider 3 rather than on the outer surface, and the second engagement portion 15 is provided on the outer surface of the rotary knob 6 rather than on the inner surface. In the handle 1C as well, the slider 3 can be displaced in the longitudinal direction x by rotating the rotary knob 6 around the longitudinal direction x.

[0080] In the handle 1C as well, the first contact portion 4A and the second contact portion 4B of the slider 3 are arranged offset in the longitudinal direction x by a length shorter than the arrangement pitch of the recesses 12 of the first holding portion 11A and the second holding portion 11B, and the slider 3 is configured such that the displacement to the proximal side is limited by either the first contact portion 4A or the second contact portion 4B abutting against the stopper 21 held by the first holding portion 11A or the stopper 21 held by the second holding portion 11B. This makes it possible to finely adjust the displacement range of the slider 3 to the proximal side. In addition, the third contact portion 4C and the fourth contact portion 4D of the slider 3 are arranged offset in the longitudinal direction x by a length shorter than the arrangement pitch of the recesses 12 of the third holding portion 11C and the fourth holding portion 11D, and the slider 3 is configured such that the distal displacement is limited by either the third contact portion 4C or the fourth contact portion 4D abutting against the stopper 21 held by the third holding portion 11C or the stopper 21 held by the fourth holding portion 11D. This makes it possible to finely adjust the distal displacement range of the slider 3.

[0081] Fig. 15 shows an example of the configuration of a catheter handle that can displace the slider 3 in the longitudinal direction x by a mechanism different from the handles 1A to 1C described above. Fig. 15 shows a plan view of the internal structure of the catheter handle. Note that in the description of the handle shown in Fig. 15, descriptions of parts that overlap with the above description will be omitted.

[0082] The handle 1 (1D) shown in FIG. 15 has a slider 3 disposed in the inner cavity of the handle body 2 and displaceable in the longitudinal direction x, and a rotating member 18 having a rotation axis extending perpendicular to the longitudinal direction x. The slider 3 is provided with a first engagement portion 14, and the outer surface of the rotating member 18 is provided with a second engagement portion 15 that engages with the first engagement portion 14, so that the slider 3 having the first engagement portion 14 functions as a rack, and the rotating member 18 having the second engagement portion 15 functions as a pinion. In the handle 1D shown in FIG. 15, a rotation operation portion 19 having a rotation axis coaxial with the rotating member 18 is provided, and a part of the rotation operation portion 19 is exposed to the outside of the handle 1D. The rotation operation portion 19 functions as an operation portion of the slider 3, and the rotating member 18 can be rotated by rotating the rotation operation portion 19. In the handle 1D, the slider 3 can be displaced in the longitudinal direction x by operating the rotation operation portion 19 from the outside of the handle 1D.

[0083] In the handle 1D as well, the first contact portion 4A and the second contact portion 4B of the slider 3 are arranged offset in the longitudinal direction x by a length shorter than the arrangement pitch of the recesses 12 of the first holding portion 11A and the second holding portion 11B, and the slider 3 is configured such that the displacement to the proximal side is limited by either the first contact portion 4A or the second contact portion 4B abutting against the stopper 21 held by the first holding portion 11A or the stopper 21 held by the second holding portion 11B. This makes it possible to finely adjust the displacement range of the slider 3 to the proximal side. In addition, the third contact portion 4C and the fourth contact portion 4D of the slider 3 are arranged offset in the longitudinal direction x by a length shorter than the arrangement pitch of the recesses 12 of the third holding portion 11C and the fourth holding portion 11D, and the slider 3 is configured such that the distal displacement is limited by either the third contact portion 4C or the fourth contact portion 4D abutting against the stopper 21 held by the third holding portion 11C or the stopper 21 held by the fourth holding portion 11D. This makes it possible to finely adjust the distal displacement range of the slider 3.

[0084] The catheter handle of the present invention has been described above. However, the catheter handle of the present invention is not particularly limited to a mechanism for displacing the slider in the longitudinal direction, so long as the slider disposed in the lumen of the handle body is displaced in the longitudinal direction to displace the linear member in the lumen of the tube to the distal or proximal side. For example, the present invention may be applied to a catheter handle disclosed in a patent document of the prior art. In addition, the catheter handle of the present invention is not limited to a mechanism for controlling the bending of the distal end of the tube, so long as the catheter handle displaces the linear member in the lumen of the tube to the distal or proximal side. For example, the catheter handle may be one that can insert and remove the linear member from the distal end of the tube by operating the catheter handle. Alternatively, the catheter handle may be one that can attach a treatment tool such as a knife or snare to the distal end of the linear member, and can insert and remove the treatment tool attached to the distal end of the linear member from the distal end of the tube by operating the catheter handle.

[0085] According to the catheter handle and catheter of the present invention, the longitudinal displacement range of the slider can be finely adjusted, and the movement of the distal end of the tube can be appropriately controlled. In addition, the length and diameter of the catheter may differ depending on the treatment application, and in such a case, it was necessary to design a new catheter handle according to the specifications of the tube. However, by using the catheter handle of the present invention, the longitudinal displacement range of the slider can be finely adjusted, and the movement of the distal end of the tube can be appropriately controlled regardless of the length and diameter of the tube. Therefore, the catheter handle can be standardized regardless of the specifications of the tube, and the development of catheters can be made more efficient. [Explanation of symbols]

[0086] 1: Catheter handle 2: Handle body 3: Slider 4: Contact part, 4A: First contact part, 4B: Second contact part, 4C: Third contact part, 4D: Fourth contact part 5: Shaft 6: Rotary knob 7: Linear member, 7A: First part, 7B: Second part, 7C: Intermediate part 8: Connection 9: Inversion guide 10: Fixtures 11: Holding part, 11A: First holding part, 11B: Second holding part, 11C: Third holding part, 11D: Fourth holding part 12: Recess 13: Convex 14: First engagement portion 15: Second engagement portion 16: Third engagement part 17: Fourth engagement part 18: Rotating parts 19: Rotation control section 21: Stopper 22:Protrusion 23: Regulation Department 31: Catheter 32: Tube

Claims

1. A handle for manipulating a catheter tube, a handle body having an internal lumen extending longitudinally from a proximal side to a distal side; A slider disposed in an inner cavity of the handle body and displaceable in the longitudinal direction; a linear member having a distal portion disposed in the lumen of the tube and a proximal portion directly or indirectly connected to the slider; The inner surface of the handle body is provided with a first holding portion composed of concave and convex portions alternately arranged in the longitudinal direction, and a second holding portion composed of concave and convex portions alternately arranged in the longitudinal direction, The first retaining portion is provided at a different circumferential position on the inner surface of the handle body relative to the second retaining portion, a stopper is held in the recess of at least one of the first holding portion and the second holding portion; the slider has a first abutment portion capable of contacting the stopper held by the first holding portion and a second abutment portion capable of contacting the stopper held by the second holding portion, the first contact portion and the second contact portion are arranged to be shifted in the longitudinal direction by a length shorter than an arrangement pitch of the recesses in the first holding portion and the second holding portion in the longitudinal direction, A catheter handle in which the slider is limited in its proximal displacement by either the first abutment portion or the second abutment portion abutting against the stopper held by the first holding portion or the stopper held by the second holding portion.

2. A handle for manipulating a catheter tube, a handle body having an internal lumen extending longitudinally from a proximal side to a distal side; A slider disposed in an inner cavity of the handle body and displaceable in the longitudinal direction; a linear member having a distal portion disposed in the lumen of the tube and a proximal portion directly or indirectly connected to the slider; The inner surface of the handle body is provided with a third holding portion composed of concave portions and convex portions alternately arranged in the longitudinal direction, and a fourth holding portion composed of concave portions and convex portions alternately arranged in the longitudinal direction, The third retaining portion is provided at a different circumferential position on the inner surface of the handle body relative to the fourth retaining portion, a stopper is held in the recess of at least one of the third holding portion and the fourth holding portion; the slider has a third abutment portion capable of contacting the stopper held by the third holding portion and a fourth abutment portion capable of contacting the stopper held by the fourth holding portion, the third contact portion and the fourth contact portion are arranged to be shifted in the longitudinal direction by a length shorter than an arrangement pitch of the recesses in the third holding portion and the fourth holding portion in the longitudinal direction, A catheter handle in which the slider is limited in its distal displacement by either the third abutment portion or the fourth abutment portion abutting against the stopper held by the third retaining portion or the stopper held by the fourth retaining portion.

3. A handle for manipulating a catheter tube, a handle body having an internal lumen extending longitudinally from a proximal side to a distal side; A slider disposed in an inner cavity of the handle body and displaceable in the longitudinal direction; a linear member having a distal portion disposed in the lumen of the tube and a proximal portion directly or indirectly connected to the slider; The inner surface of the handle body is provided with a first retaining portion composed of concave portions and convex portions alternately arranged in the longitudinal direction, a second retaining portion composed of concave portions and convex portions alternately arranged in the longitudinal direction, a third retaining portion composed of concave portions and convex portions alternately arranged in the longitudinal direction, and a fourth retaining portion composed of concave portions and convex portions alternately arranged in the longitudinal direction, The first retaining portion is provided at a different circumferential position on the inner surface of the handle body relative to the second retaining portion, The third retaining portion is provided at a different circumferential position on the inner surface of the handle body relative to the fourth retaining portion, a stopper is held in the recess of at least one of the first holding portion and the second holding portion; a stopper is held in the recess of at least one of the third holding portion and the fourth holding portion; the slider has a first abutment portion capable of contacting the stopper held by the first holding portion, a second abutment portion capable of contacting the stopper held by the second holding portion, a third abutment portion capable of contacting the stopper held by the third holding portion, and a fourth abutment portion capable of contacting the stopper held by the fourth holding portion, the first contact portion and the second contact portion are arranged to be shifted in the longitudinal direction by a length shorter than an arrangement pitch of the recesses in the first holding portion and the second holding portion in the longitudinal direction, the third contact portion and the fourth contact portion are arranged to be shifted in the longitudinal direction by a length shorter than an arrangement pitch of the recesses in the third holding portion and the fourth holding portion in the longitudinal direction, A catheter handle in which the slider is restricted in its proximal displacement by either the first abutment portion or the second abutment portion abutting against the stopper held by the first holding portion or the stopper held by the second holding portion, and is restricted in its distal displacement by either the third abutment portion or the fourth abutment portion abutting against the stopper held by the third holding portion or the stopper held by the fourth holding portion.

4. 4. The catheter handle according to claim 1, wherein the arrangement pitch of the recesses in the first holding portion and the second holding portion in the longitudinal direction is 0.5 mm or more and 4.0 mm or less.

5. 4. The catheter handle according to claim 2, wherein the arrangement pitch of the recesses in the third holding portion and the fourth holding portion in the longitudinal direction is 0.5 mm or more and 4.0 mm or less.

6. The handle has a rotation axis extending in the longitudinal direction and a rotation knob rotatably provided with respect to the handle body, The rotation knob has an inner cavity extending in the longitudinal direction, and a portion of the slider is disposed in the inner cavity. A first engagement portion is provided on an outer surface of the slider, and a second engagement portion that engages with the first engagement portion is provided on an inner surface of the rotation knob, The catheter handle according to any one of claims 1 to 3, wherein at least one of the first engagement portion and the second engagement portion is arranged to extend in a spiral shape.

7. The handle has a rotation axis extending in the longitudinal direction and a rotation knob rotatably provided with respect to the handle body, The slider has an inner cavity extending in the longitudinal direction, and a portion of the rotation knob is disposed in the inner cavity; a first engagement portion is provided on an inner surface of the slider, and a second engagement portion is provided on an outer surface of the rotary knob to engage with the first engagement portion; The catheter handle according to any one of claims 1 to 3, wherein at least one of the first engagement portion and the second engagement portion is arranged to extend in a spiral shape.

8. The handle has a rotating member having a rotation axis extending perpendicular to the longitudinal direction, a first engaging portion is provided on the slider, and a second engaging portion is provided on an outer surface of the rotating member to engage with the first engaging portion; The catheter handle according to any one of claims 1 to 3, wherein the slider having the first engagement portion functions as a rack, and the rotating member having the second engagement portion functions as a pinion.

9. A catheter handle according to any one of claims 1 to 3; and a tube disposed distal to the catheter handle.

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