WO2009142120A1 - カテーテル用ハンドル - Google Patents
カテーテル用ハンドル Download PDFInfo
- Publication number
- WO2009142120A1 WO2009142120A1 PCT/JP2009/058749 JP2009058749W WO2009142120A1 WO 2009142120 A1 WO2009142120 A1 WO 2009142120A1 JP 2009058749 W JP2009058749 W JP 2009058749W WO 2009142120 A1 WO2009142120 A1 WO 2009142120A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- handle body
- distal end
- handle
- catheter
- elastic member
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
- A61M25/0133—Tip steering devices
- A61M25/0136—Handles therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
Definitions
- the present invention relates to a catheter handle excellent in operability.
- a catheter handle is usually provided on the proximal end side of the catheter.
- Various catheter handles have been proposed depending on the type of catheter.
- the distal end portion of the catheter is desired to be bent or stretched by operating the operation portion of the catheter handle.
- Patent Document 1 As a catheter handle used in such a case, as shown in Patent Document 1 below, for example, a handle having a piston structure in which a drive member is incorporated in a long cylinder has been proposed.
- the outer diameter of the piston and the inner diameter of the cylinder are constant along the axial direction.
- a structure has been proposed in which a ring-shaped elastic member such as an O-ring is mounted between the outer periphery of the piston and the inner periphery of the cylinder so that the operating portion of the catheter handle can be braked at any position in the axial direction.
- the present invention has been made in view of such a situation, and an object of the present invention is to provide a catheter handle that is excellent in operability and can hold the shape while the distal end of the catheter is bent.
- the first catheter handle of the present invention comprises: The handle body, An operation unit mounted on the handle body so as to be movable in the axial direction; A handle for a catheter having a ring-shaped elastic member mounted between the handle body and the operation unit, The proximal end of the catheter tube is fixed to the operation part, The elastic member is attached to the handle body, An operation cylinder constituting the operation unit enters the inner periphery of the handle body, A tapered surface having a smaller outer diameter in the distal end direction is formed on the outer peripheral surface of the operation cylinder that has entered the inner periphery of the handle body.
- the inner peripheral surface of the elastic member is in contact with the outer peripheral surface of the tapered surface, and is configured to be movable in the axial direction.
- an operation wire is inserted, The distal end of the manipulation wire is secured to a portion of the distal end of the catheter tube; A proximal end of the operating wire is fixed to a part of the handle body; When the operation portion is moved from the proximal end toward the distal end with respect to the handle body, the distal end portion of the catheter tube is bent, and the elastic member is tapered with respect to the tapered surface. It is characterized by relative movement in the axial direction to the side having a larger outer diameter on the surface.
- the proximal end of the catheter tube is fixed to the operation portion, and the distal end of the operation wire is one of the distal ends of the catheter tube.
- the operation unit is moved from the proximal end to the distal end relative to the handle body by fixing the proximal end of the operation wire to a part of the handle body.
- the distal end of the catheter tube bends.
- a tapered surface having an outer diameter that decreases in the distal end direction is formed on the outer peripheral surface of the operation cylinder, so that the operation unit is moved from the proximal end to the distal end with respect to the handle body.
- the elastic member moves in the direction, the elastic member moves relative to the tapered surface in the axial direction to the side having the larger outer diameter on the tapered surface, and the elastic member is fastened to the operation cylinder.
- the force is increased and the bent state at the distal end of the catheter tube is maintained.
- the shape can be maintained while the distal end of the catheter is bent.
- the distal end portion of the catheter tube changes from a straight state to a bent state, and It is preferable that the elastic member move relative to the tapered surface in the axial direction toward the side having a larger outer diameter on the tapered surface.
- the second catheter handle of the present invention comprises: The handle body, An operation unit that is mounted so as to be movable in the axial direction with respect to the handle body; A pressing ring that is mounted between the operation portion and a part of the handle body and moves in the axial direction with respect to the handle body together with the operation portion; A catheter handle having a ring-shaped elastic member mounted between the handle body and the pressing ring, The proximal end of the catheter tube is fixed to the handle body, The operation portion and the pressing ring are mounted on a part of the outer periphery of the handle body so as to be movable in the axial direction.
- a taper surface whose diameter increases in the distal end direction is formed on a part of the inner periphery of the pressing ring,
- the outer periphery of the elastic member is in contact with the tapered surface,
- the inner periphery of the elastic member is configured to be movable in the axial direction in contact with a part of the outer periphery of the handle body.
- an operation wire is inserted, The distal end of the manipulation wire is secured to a portion of the distal end of the catheter tube; A proximal end of the operation wire is fixed to a part of the operation unit; The axial position of the handle body that contacts the elastic member changes according to the axial movement of the operation portion and the pressing ring with respect to the handle body, The distal end of the catheter tube is bent by moving the operation portion and the pressing ring from the distal end toward the proximal end with respect to the handle body, and the elastic member is tapered. It is characterized by being pressed against the side having the larger diameter on the surface.
- the second catheter handle having such a configuration, when the operation unit and the pressing ring are moved from the distal end toward the proximal end, the distal end portion of the catheter tube is bent, Since the elastic member is pressed to the side having a large diameter (distal end side) on the tapered surface, the tightening force to the handle body by the elastic member is small, and can be moved (bent) with a light force. .
- the elastic member is pressed to the side having a small diameter on the tapered surface (proximal end side).
- the tightening force of the main body increases, and a large force is required to move (stretch) the main body. That is, the resistance when the distal end portion in the bent state is extended is large.
- the shape can be maintained while the distal end of the catheter is bent.
- the distal end portion of the catheter tube is moved from the straight state by moving the operation portion and the pressing ring from the distal end toward the proximal end with respect to the handle body. While being in a bent state, it is preferable that the elastic member is pressed to the side having a larger diameter in the tapered surface.
- the third catheter handle of the present invention comprises: The handle body, An operation unit that is mounted so as to be movable in the axial direction with respect to the handle body; A ring-shaped elastic member mounted between the handle body and the operation unit; A backup ring that is mounted on both sides of the elastic member from both axial sides of the handle body; The proximal end of the catheter tube is fixed to the operation part, The elastic member and the backup ring are attached to the handle body, A cylinder for operation that is a middle shaft portion constituting the operation unit enters the inner periphery of the handle body, A tapered surface having a smaller outer diameter in the distal end direction is formed on the outer peripheral surface of the operation cylinder that has entered the inner periphery of the handle body.
- the inner peripheral surface of the elastic member and the inner peripheral surface of the backup ring are in contact with the outer peripheral surface of the tapered surface, and are configured to be movable in the axial direction.
- an operation wire is inserted, The distal end of the manipulation wire is secured to a portion of the distal end of the catheter tube; A proximal end of the operating wire is fixed to a part of the handle body; The distal end portion of the catheter tube is bent by moving the operating portion from the proximal end toward the distal end relative to the handle body, and the elastic member has an outer diameter at the tapered surface. It is characterized by relative movement in the axial direction to the larger side.
- the proximal end of the catheter tube is fixed to the operation portion, and the distal end of the operation wire is one of the distal ends of the catheter tube.
- the operation unit is moved from the proximal end to the distal end relative to the handle body by fixing the proximal end of the operation wire to a part of the handle body.
- the distal end of the catheter tube is bent.
- a tapered surface having an outer diameter that decreases in the distal end direction is formed on the outer peripheral surface of the operation cylinder, so that the operation unit is moved from the proximal end to the distal end with respect to the handle body.
- the elastic member By moving in the direction, the elastic member relatively moves in the axial direction to the side having the larger outer diameter on the tapered surface, and the tightening force of the operation cylinder by the elastic member is increased, and the catheter The bent state at the distal end of the tube is maintained.
- the shape can be maintained while the distal end of the catheter is bent.
- the third catheter handle has the backup ring on which the elastic member is mounted to be sandwiched from both sides in the axial direction of the handle body. Even if the operation portion is moved in a direction in which the gap with the tapered surface formed on the outer peripheral surface of the cylindrical body is increased, the O-ring is prevented from being bitten into the gap, and the movement operation failure is effectively prevented. Can be prevented.
- the distal end portion of the catheter tube is changed from a straight state to a bent state by moving the operation portion from the proximal end toward the distal end with respect to the handle body.
- the elastic member relatively moves in the axial direction to the side having the larger outer diameter on the tapered surface.
- the backup ring is composed of a member having a smaller frictional resistance than the elastic member.
- the backup ring is composed of a member having a higher hardness than the elastic member.
- the bag up ring is preferably made of a fluororesin or a metal.
- FIG. 1 is an overall perspective view of a catheter according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view of the main part of the catheter handle shown in FIG.
- FIG. 3 is a cross-sectional view showing a further essential part of FIG.
- FIG. 4 is a cross-sectional view showing a state in which the operation unit is moved from the state of FIG.
- FIG. 5 is a half sectional perspective view of a catheter handle according to another embodiment of the present invention.
- 6 is a cross-sectional view showing a main part of FIG.
- FIG. 7 is an overall perspective view of a catheter according to still another embodiment of the present invention.
- FIG. 8 is a cross-sectional view of the main part of the catheter handle shown in FIG. FIG.
- FIG. 9 is a cross-sectional view showing a further essential part of FIG.
- FIG. 10 is a cross-sectional view showing a state where the operation unit is moved from the state of FIG.
- FIG. 11 is a cross-sectional view showing a further essential part of FIG.
- a tip deflection operable catheter 2 As shown in FIG. 1, a tip deflection operable catheter 2 according to an embodiment of the present invention is used, for example, for diagnosis or treatment of arrhythmia in the heart, and a distal end portion of a catheter tube (tube member) 4.
- a tip 10 and a plurality of intermediate rings 12 are mounted.
- the tip 10 and the intermediate ring 12 function as electrodes, and are connected and fixed to the catheter tube 4 by bonding with an adhesive, for example.
- a handle 20 is attached to the proximal end of the catheter tube 4.
- Conductor wires are respectively passed through the catheter tube 4 and the handle 20, and the tips thereof are electrically connected to the tip 10 and the intermediate ring 12 constituting the electrodes. Further, the base ends of these conductive wires are connected to a connector 21 fixed to the rear end portion of the handle 20 shown in FIG.
- the handle 20 is provided with an operation knob 22 for performing a deflection movement operation (swing operation) of the distal end portion of the catheter tube 4.
- the catheter tube 4 is composed of a hollow tube member, and may be composed of a tube having the same characteristics along the axial direction.
- a proximal end portion that is integrally formed axially with the distal end portion and is relatively stiffer than the distal end portion.
- the length of the catheter tube 4 is illustrated as being short, but in actuality, it is several times to several tens of times longer than the axial length of the handle 20.
- the catheter tube 4 is made of a synthetic resin such as polyolefin, polyamide, polyether polyamide, or polyurethane.
- the outer diameter of the catheter tube 4 is generally about 0.6 to 3 mm, and the inner diameter is about 0.5 to 2.5 mm.
- Conductive wires connected to the distal tip 10 and the intermediate ring 12 constituting the electrode shown in FIG. 1 are insulated and passed through the axial lumen of the catheter tube 4.
- the tip 10 and the intermediate ring 12 shown in FIG. 1 are made of a metal having good electrical conductivity, such as aluminum, copper, stainless steel, gold, or platinum. It should be noted that the tip 10 and the intermediate ring 12 are preferably made of platinum or the like in order to provide a good contrast for X-rays.
- the outer diameters of the distal tip 10 and the intermediate ring 12 are not particularly limited, but are preferably about the same as the outer diameter of the catheter tube 4 and are usually about 0.5 to 3 mm.
- the swinging member is not particularly limited, and is constituted by, for example, a leaf spring.
- the distal end of the operation wire 30 shown in FIGS. 2 to 4 is connected and fixed to the leaf spring as the swinging member.
- the outer diameter of the operation wire 30 is not particularly limited, but is preferably 0.01 to 0.3 mm, and more preferably 0.03 to 0.08 mm.
- the operation wire 30 is made of, for example, a Ni—Ti superelastic alloy, but is not necessarily made of metal.
- the operation wire 30 may be composed of, for example, a high-strength non-conductive wire.
- the proximal end of the operation wire 30 is fixed to a wire tension adjusting tool 32 as shown in FIG. 2 after adjusting the tension of the operation wire 30.
- the wire tension adjuster 32 is mounted in the handle body 24 of the handle 20 so as to be movable in the axial direction. By fixing the wire tension adjustment tool 32 at a predetermined axial position inside the handle body 24, the tension of the operation wire 30 can be adjusted.
- the proximal end of the catheter tube 4 is fixed to the operation knob 22 and the operation cylinder 28 via the sheath tube 26.
- the operation knob 22 and the operation cylinder 28 correspond to the operation unit.
- the operation cylinder 28 is inserted into the shaft hole 25 formed in the handle main body 24 and is movable in the axial direction with respect to the handle main body 24.
- the operator can hold the handle main body 24 with one hand, operate the operation knob 22 with the finger of one hand, and move the operation cylinder 28 in the axial direction with respect to the handle main body 24. Since the operating cylinder 28 is connected and fixed to the proximal end of the catheter tube 4, when the operating cylinder 28 is moved in the axial direction with respect to the handle body 24, the catheter 30 is moved relative to the operating wire 30. The proximal end of the tube 4 moves relative to the axial direction. The distal end of the operation wire 30 is fixed to a swinging member provided in the vicinity of the distal end of the catheter tube 4, and the proximal end of the operation wire 30 is fixed to the handle 20. It is fixed to.
- the operation cylinder 28 When the operation cylinder 28 is moved to the distal end side, the proximal end of the catheter tube 4 is relatively moved to the distal end side while the proximal end of the operation wire 30 is fixed to the wire tension adjusting tool 32. .
- the operation wire 30 is tensioned by the operation of the operation cylinder 28, and the catheter tube 4 is subjected to a compressing force in the axial direction. Since the operation wire 30 and the catheter tube 4 hardly change in axial length, the catheter tube 4 and the operation wire 30 are bent. As a result, as shown in FIG. 1, the distal end portion of the catheter tube 4 performs a swing deflection operation as indicated by an arrow A.
- the distal end of the catheter 2 can be bent and moved in the direction A by operating the operation knob 22 of the handle 20 shown in FIG. If the handle 20 is rotated around the axis, the direction in the A direction relative to the catheter 2 can be freely set while being inserted into the body cavity.
- a tapered surface 40 is formed on the outer peripheral surface of the operation cylinder 28.
- the tapered surface 40 is a tapered surface having an outer diameter that decreases toward the distal end side of the handle body 24.
- the axial length of the tapered surface 40 is preferably equal to or greater than the range length in which the operation knob 22 can move relative to the handle body 24 in the axial direction.
- the length of the tapered surface 40 in the axial direction is preferably 5 to 20 mm.
- the taper inclination angle of the taper surface 40 is preferably an angle of 0.1 to 2.0 degrees with respect to the axis.
- the maximum outer diameter of the tapered surface 40 is equal to or smaller than the inner diameter of the shaft hole 25 shown in FIG. 2 so that the operation cylinder 28 can move in the axial direction X in the shaft hole 25. It is determined.
- the axial length of the operation cylinder 28 is preferably 40 to 80 mm longer than the axial length of the tapered surface 40.
- the inner peripheral surface of an O-ring 42 that is a ring-shaped elastic member slides and contacts the tapered surface 40.
- the O-ring 42 is mounted in an O-ring groove 46 formed between the handle body 24 and a cap 44 that is detachably attached to the distal end of the handle body 24.
- the outer peripheral surface of the O-ring 42 is always in contact with the inner peripheral surface of the O-ring groove 46, and the inner peripheral surface of the O-ring 42 is always in contact with the tapered surface 40.
- the O-ring groove 46 preferably has a gap 47 in the axial direction.
- the O-ring 42 is made of rubber such as silicone rubber, nitrile rubber, or fluorine rubber, or synthetic resin, for example.
- the operator holds the handle body 24 with one hand, operates the operation knob 22 with the finger of one hand, and moves the operation cylinder 28 relative to the handle body 24 from the state shown in FIG. 3, for example, from FIG.
- the operation cylinder 28 since the operation cylinder 28 is connected and fixed to the proximal end of the catheter tube 4, the catheter tube 4 moves relative to the operation wire 30 in the axial direction.
- the distal end portion of the catheter tube 4 is bent from a straight state as indicated by an arrow A.
- the operation cylinder 28 moves toward the distal end relative to the handle body 24, so that the O-ring 42 is outside the tapered surface 40 with respect to the operation cylinder 28.
- the inner diameter of the O-ring groove 46 is not changed, the distance between the operation cylinder 28 and the O-ring groove 46 becomes narrow according to the movement, and the O-ring 42 is connected to the operation cylinder 28 and the cap 44. As a result, the frictional force between the O-ring 42 and the operating cylinder 28 increases.
- the O-ring 42 has an outer diameter on the tapered surface 40 relatively to the operation cylinder 28. It is located at the smallest position. Therefore, in this case, since the interval between the operation cylinder 28 and the O-ring groove 46 is the largest, the force with which the O-ring 42 presses the operation cylinder 28 and the cap 44 is the smallest, The frictional force with the operating cylinder 28 is reduced. Accordingly, at the initial stage of movement in which the operation knob 22 is moved in the direction away from the handle body 24 in the axial direction, the operation knob 22 moves in the axial direction with a light force.
- the manipulation knob 22 is moved in the axial direction against the frictional force between the tapered surface 40 and the O-ring 42.
- the frictional force between the tapered surface 40 and the O-ring 42 gradually decreases.
- the catheter handle 20a of the tip deflection operable catheter 2a according to the embodiment shown in FIGS. 5 and 6 is the same as the catheter handle 20 of the tip deflection operable catheter 2 according to the first embodiment described above, except as described below. , Which have the same configuration and operational effects, redundant description is omitted.
- the catheter tube 4a is connected and fixed to the distal end of the handle body 24a of the handle 20a via the sheath 26a.
- An operation wire 30 is arranged so as to be movable in the axial direction X inside the catheter tube 4a, and the proximal end of the wire 30 is connected and fixed to the slide piece 50 so that the tension of the wire 30 can be adjusted.
- the plate-like slide piece 50 is connected and fixed to the ring-shaped operation knob 22a through the slide hole 60 formed in the handle main body 24a.
- the slide piece 50 is movable in the axial direction X along the slide hole 60 with respect to the handle main body 24a together with the operation knob 22a.
- the slide holes 60 are formed at two positions 180.degree. Symmetrical in the circumferential direction of the handle main body 24a, and the axial lengths thereof define the axial movable range of the operation knob 22a and the slide piece 50.
- a ring-shaped cap 54 is detachably connected and fixed in the axial direction to the operation knob 22a, and an elastic member accommodating groove 46a is formed between them.
- the elastic member accommodating groove 46a accommodates a ring-shaped elastic member 42a and a backup ring (pressing ring) 52 in which a tapered surface 40a is formed in pressure contact with the outer periphery thereof.
- the inner peripheral surface of the backup ring 52 has a predetermined gap with respect to the outer periphery of the handle body 24a.
- the inner peripheral surface of the ring-shaped elastic member 42a is in contact with the outer periphery of the handle main body 24a. As the slide piece 50 moves, the ring-shaped elastic member 42a moves in the axial direction. It slides against the outer periphery of the main body 24a.
- the operator holds the handle body 24a with one hand, operates the operation knob 22a with the finger of one hand, and pulls the slide piece 50 along the slide hole 60 toward the proximal end side with respect to the handle body 24a. It is assumed that the operation is performed in the state shown in FIG. In this case, the operation wire 30 is pulled toward the proximal end side, and the operation wire 30 is pulled with respect to the catheter tube 4a. As a result, as shown in FIG. 1, the distal end portion of the catheter tube 4 is bent from a straight state as indicated by an arrow A.
- the ring-shaped elastic member 42a when the slide piece 50 moves in the axial direction toward the proximal end side with respect to the handle body 24a, the ring-shaped elastic member 42a has a larger outer diameter on the tapered surface 40a of the elastic member receiving groove 46a. Will be pressed against. In this case, the ring-shaped elastic member 42a can be deformed to the larger outer diameter side of the elastic member housing groove 46a. As a result, the force with which the ring-shaped elastic member 42a tightens the handle body 24a is weakened. The frictional force between the elastic member 42a and the handle main body 24a is reduced. Therefore, at the initial stage of movement in which the operation knob 22a is moved toward the proximal end with respect to the handle body 24a, the operation knob 22a moves in the axial direction with a light force.
- the elastic member receiving groove 46a is pressed to the side having the smaller outer diameter on the tapered surface 40a. That is, the ring-shaped elastic member 42a is deformed so as to be pushed into the smaller outer diameter side of the elastic member receiving groove 46a. As a result, the force with which the ring-shaped elastic member 42a tightens the handle body 24a is increased, and the ring-shaped elastic member The frictional force between 42a and the handle body 24a increases.
- the operation knob 22a does not move in the axial direction, and the distal end portion of the catheter tube 4 shown in FIG. 1 can maintain a bent state. .
- the manipulation knob 22a is pivoted against the frictional force between the inner peripheral surface of the elastic member 42a and the outer peripheral surface of the handle body 24a. What is necessary is just to move to the direction distal end side.
- a tip deflectable manipulatable catheter 102 according to the embodiment shown in FIG. 7 is used, for example, for diagnosis or treatment of arrhythmia in the heart, and at the distal end of a catheter tube (tube member) 104, a tip tip 110, A plurality of intermediate rings 112 are attached.
- the distal tip 110 and the intermediate ring 112 function as electrodes, and are connected and fixed to the catheter tube 104 by bonding with an adhesive, for example.
- a handle 120 is attached to the proximal end of the catheter tube 104.
- Conductive wires are passed through the catheter tube 104 and the handle 120, respectively, and the tips thereof are electrically connected to the tip 110 and the intermediate ring 112 constituting the electrodes. Further, the base ends of these conductive wires are connected to a connector 121 fixed to the rear end portion of the handle 120 shown in FIG.
- the handle 120 is equipped with an operation knob 122 for performing a deflection movement operation (swing operation) of the distal end portion of the catheter tube 104.
- the catheter tube 104 is formed of a hollow tube member, and may be formed of a tube having the same characteristics along the axial direction. However, it is preferable that a distal end portion having a relatively high flexibility and a distal end portion are provided. A proximal end portion that is integrally formed axially with the distal end portion and is relatively stiffer than the distal end portion. In FIG. 7, the length of the catheter tube 104 is illustrated as being short, but in actuality, it is several times to several tens of times longer than the axial length of the handle 120.
- the catheter tube 104 is made of a synthetic resin such as polyolefin, polyamide, polyether polyamide, or polyurethane.
- the outer diameter of the catheter tube 104 is generally about 0.6 to 3 mm, and the inner diameter is about 0.5 to 2.5 mm.
- Conductor wires connected to the distal tip 110 and the intermediate ring 112 constituting the electrode shown in FIG. 7 are insulated and passed through the axial lumen of the catheter tube 104.
- the tip 110 and the intermediate ring 112 are preferably made of platinum or the like in order to have good contrast with respect to X-rays.
- the outer diameters of the distal tip 110 and the intermediate ring 112 are not particularly limited, but are preferably about the same as the outer diameter of the catheter tube 104, and are usually about 0.5 to 3 mm.
- a swinging member In the vicinity of the distal end of the catheter tube 104, a swinging member is accommodated.
- the swinging member is not particularly limited, and is constituted by, for example, a leaf spring.
- the distal end of the operation wire 130 shown in FIGS. 8 to 10 is connected and fixed to the leaf spring as the swinging member.
- the outer diameter of the operation wire 130 is not particularly limited, but is preferably 0.01 to 0.3 mm, and more preferably 0.03 to 0.08 mm.
- the operation wire 130 is made of, for example, a Ni—Ti superelastic alloy, but is not necessarily made of metal.
- the operation wire 130 may be composed of, for example, a high-strength non-conductive wire.
- the proximal end of the operation wire 130 is fixed to the wire tension adjuster 132 as shown in FIG. 8 after adjusting the tension of the operation wire 130.
- the wire tension adjuster 132 is mounted in the handle main body 124 of the handle 120 so as to be movable in the axial direction. By fixing the wire tension adjusting tool 132 at a predetermined axial position inside the handle main body 124, the tension of the operation wire 130 can be adjusted.
- the proximal end of the catheter tube 104 is fixed to the operation knob 122 and the middle shaft portion 128 via the sheath tube 126.
- the operation knob 122 and the middle shaft portion 128 correspond to the operation unit.
- a middle shaft portion 128 made of an operation cylinder is inserted into a shaft hole 125 formed in the handle main body 124 and is movable in the axial direction with respect to the handle main body 124.
- the operator can hold the handle main body 124 with one hand, operate the operation knob 122 with the finger of the one hand, and move the middle shaft portion 128 with respect to the handle main body 124 in the axial direction. Since the middle shaft portion 128 is fixedly connected to the proximal end of the catheter tube 104, when the middle shaft portion 128 is moved in the axial direction with respect to the handle body 124, the catheter tube 104 is moved closer to the operation wire 130. The top end moves relative to the axial direction. The distal end of the operation wire 130 is fixed to a swinging member provided near the distal end of the catheter tube 104, and the proximal end of the operation wire 130 is fixed to the handle 120. It is fixed to.
- the proximal end of the catheter tube 104 When the middle shaft portion 128 is moved to the distal end side, the proximal end of the catheter tube 104 is relatively moved to the distal end side while the proximal end of the operation wire 130 is fixed to the wire tension adjuster 132. In this case, the operation of the middle shaft portion 128 applies tension to the operation wire 130 and applies a force compressing the catheter tube 104 in the axial direction. In addition, since the operation wire 130 and the catheter tube 104 hardly change in axial length, the catheter tube 104 and the operation wire 130 are bent. As a result, as shown in FIG. 7, the distal end portion of the catheter tube 104 performs a swing deflection operation as indicated by an arrow A.
- the distal end of the catheter 102 can be bent and moved in the direction A by operating the operation knob 122 of the handle 120 shown in FIG. 7 in the axial direction X. If the handle 120 is rotated about the axis, the direction of the A direction with respect to the catheter 102 can be freely set while being inserted into the body cavity.
- a tapered surface 140 is formed on the outer peripheral surface of the central shaft portion 128.
- the tapered surface 140 is a tapered surface having an outer diameter that decreases toward the distal end side of the handle body 124.
- the axial length of the tapered surface 140 is preferably equal to or greater than the range length in which the operation knob 122 can move relative to the handle body 124 in the axial direction.
- the axial length of the tapered surface 140 is preferably 5 to 20 mm.
- the taper inclination angle of the taper surface 140 is preferably an angle of 0.1 to 2.0 degrees with respect to the axis.
- the maximum outer diameter of the tapered surface 140 is equal to or smaller than the inner diameter of the shaft hole 125 shown in FIG. 8 and is determined so that the middle shaft portion 128 can move in the axial direction X within the shaft hole 125.
- the axial length of the middle shaft portion 128 is preferably 40 to 80 mm longer than the axial length of the tapered surface 140.
- a male thread 151 is formed on the outer periphery of the distal end 124 a of the handle body 124, and a female thread 152 is formed on the inner periphery of the tip cap 144.
- the male screw portion 151 and the female screw portion 152 are screwed together.
- the inner diameter of the distal end 144a of the tip cap 144 is smaller than the inner diameter of the inner periphery of the tip cap 144 where the female screw portion 152 is formed.
- a ring groove 146 is formed between the distal end 124 a of the handle body 124 and the distal end 144 a of the tip cap 144, and between the inner periphery of the female screw portion 152 and the outer periphery of the central shaft portion 128. .
- an O-ring 142 which is a ring-shaped elastic member, and backup rings 141 and 143 are mounted on both sides in the axial direction.
- the axial length of the ring groove 146 is adjusted, and the O-ring 142 sandwiched between the backup rings 141 and 143 is moved in the axial direction. Deformation changes the tightening force of the O-ring 142 against the tapered surface 140 of the middle shaft portion 128.
- the axial width t0 of the O-ring 142 is preferably 0.5 to 4 mm.
- the axial widths t1 and t2 of the backup rings 141 and 143 may be the same or different. By making the width t1 and the width t2 the same, the cost for manufacturing the backup ring can be reduced.
- the axial width t0 of the O-ring 142 is preferably equal to or greater than the axial widths t1 and t2 of the backup rings 141 and 143.
- the gap of the axial gap width t4 formed between the proximal end 144b of the cap 144 and the handle body 124 is It can be adjusted by the widths t1 and t2 of the backup rings 141 and 143. It is preferable to adjust the widths t1 and t2 of the backup rings 141 and 143 so that the gap width t4 is as small as possible.
- the O-ring 142 and the backup rings 141 and 143 have the same inner diameter D2 with no external force acting on these rings.
- the inner diameter D2 is preferably substantially equal to the maximum outer diameter D1 of the tapered surface 140 of the central shaft portion 128, but the inner diameter D2 is 0.05 than the maximum outer diameter D1. It may be configured to be about 0.1 mm larger.
- the outer diameter D4 of the O-ring 142 and the backup ring 143 is equal to the inner diameter of the distal end 124a of the handle body 124.
- the outer diameter D3 of the backup ring 141 that contacts the distal end 144a of the tip cap 144 is smaller than the inner diameter of the cap 144 in the ring groove 146 and larger than the inner diameter D5 of the distal end 144a of the cap 144.
- the outer diameter D3 of the backup ring 141 is drawn larger than the outer diameter of the backup ring 143, but actually, the outer diameter D3 of the backup ring 141 is equal to the outer diameter D4 of the backup ring 143. It is preferable. By setting it as such a structure, the cost at the time of manufacturing the backup rings 141 and 143 can further be reduced.
- the O-ring 142 is made of, for example, rubber such as silicone rubber, nitrile rubber, or fluorine rubber, or synthetic resin.
- the backup rings 141 and 143 are preferably made of, for example, a fluororesin or a metal.
- the backup rings 141 and 143 preferably have lower frictional resistance (or slippery) and higher hardness (or higher Young's modulus) than the O-ring 142.
- JIS-A hardness of the O-ring 142 is preferably A30 to A70, and the hardness of the backup rings 141 and 143 is preferably higher than D40 of JIS-D hardness.
- the JIS-A hardness referred to in the present invention refers to a physical property value measured in accordance with JIS standard K-6301.
- the operator holds the handle main body 124 with one hand, operates the operation knob 122 with the finger of one hand, and moves the middle shaft portion 128 relative to the handle main body 124 from the state shown in FIG. 9 to the state shown in FIG. Assume that you have operated.
- the catheter tube 104 moves relative to the operation wire 130 in the axial direction.
- the distal end portion of the catheter tube 104 is bent from a straight state as indicated by an arrow A.
- the O-ring 142 and the backup rings 141 and 143 are tapered with respect to the middle shaft portion 128 by moving the middle shaft portion 128 toward the distal end relative to the handle body 124.
- the O-ring 142 is positioned relative to the middle shaft portion 128 so that the outer diameter of the tapered surface 140 is the smallest. positioned. Therefore, in this case, since the distance between the middle shaft portion 128 and the ring groove 146 is the largest, the force with which the O-ring 142 presses the middle shaft portion 128 and the cap 144 is the smallest. Frictional force is reduced. Accordingly, at the initial stage of movement in which the operation knob 122 is moved in the direction away from the handle body 124 in the axial direction, the operation knob 122 moves in the axial direction with a light force.
- the backup rings 141 and 143 are made of a member having a smaller frictional resistance than the O-ring 142, the O-ring 142 does not hinder the tightening or axial movement of the O-ring 142 with respect to the tapered surface 140. Further, since the backup rings 141 and 143 are composed of members having higher hardness than the O-ring 142, unlike the O-ring 142, tightening to the tapered surface 140 due to elastic deformation is small, and the taper of the O-ring 142 is small. Tightening and axial movement with respect to the surface 140 are not hindered.
- the backup rings 141 and 143 prevent the O-ring 142 from being bitten into the gap between the handle main body 124 and the tapered surface 140, and in particular, the gap between the distal end 144 a of the tip cap 144 and the tapered surface 140. It is possible to prevent the O-ring 142 from being bitten and to effectively prevent a moving operation failure.
- the O-ring 142 is in contact with the tapered surface 140 having a large outer diameter. Does not move in the axial direction. Therefore, even if the finger is removed from the operation knob 122, the distal end portion of the catheter tube 104 shown in FIG. 7 can maintain a bent state.
- the operation knob 122 is moved in the axial direction against the frictional force between the tapered surface 140 and the O-ring 142, and FIG. To the state shown in FIG. At that time, the O-ring 142 moves from the large outer diameter portion of the tapered surface 140 to the smaller outer diameter portion, so that the frictional force between the tapered surface 140 and the O-ring 142 gradually decreases.
- the operability of the catheter handle can be adjusted by adjusting the force with which the backup rings 141 and 143 tighten the O-ring 142.
- the tightening force increases, the frictional force between the tapered surface 140 and the O-ring 142 increases.
- the tightening force decreases, the frictional force between the tapered surface 140 and the O-ring 142 decreases.
- the tightening force is adjusted by screwing the male threaded portion 151 of the handle main body 124 into the female threaded portion 152 of the tip cap 144, and the axial length of the ring groove 146 is adjusted, so that it is sandwiched between the backup rings 141 and 143.
- the O-ring 142 is deformed in the axial direction, and the tightening force of the O-ring 142 against the tapered surface 140 of the middle shaft portion 128 changes.
- a click ring 150 may be interposed between the proximal end 144 b of the tip cap 144 and the handle body 124.
- the click ring 150 is a member provided with a mechanism for providing a click feeling when the tip cap 144 is rotated in the circumferential direction. The adjustment of the tightening force can be performed after the assembly of the catheter handle and before being passed to an operator such as a doctor, or can be adjusted by the operator himself.
- the catheter handle according to the present invention can be applied not only to the tip deflection operable catheter of the illustrated embodiment but also to other catheters.
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Abstract
Description
ハンドル本体と、
前記ハンドル本体に対して軸方向に移動自在に装着される操作部と、
前記ハンドル本体と前記操作部との間に装着されるリング状の弾性部材とを有するカテーテル用ハンドルであって、
前記操作部にカテーテルチューブの近位端が固定してあり、
前記ハンドル本体に前記弾性部材が装着してあり、
前記ハンドル本体の内周に前記操作部を構成する操作用筒体が入り込み、
前記ハンドル本体の内周に入り込んでいる前記操作用筒体の外周面には、遠位端方向に外径が小さくなるテーパ面が形成してあり、
前記テーパ面の外周面に、前記弾性部材の内周面が接触して軸方向に移動可能に構成され、
前記カテーテルチューブ内には、操作用ワイヤが挿通してあり、
前記操作用ワイヤの遠位端が前記カテーテルチューブの遠位端の一部に固定してあり、
前記操作用ワイヤの近位端が前記ハンドル本体の一部に固定してあり、
前記ハンドル本体に対して前記操作部を近位端から遠位端方向に移動したときには、前記カテーテルチューブの遠位端部が曲折するとともに、前記弾性部材が、前記テーパ面に対して、前記テーパ面における外径が大きい側に軸方向に相対移動することを特徴とする。
また、前記操作用筒体の外周面には、遠位端方向に外径が小さくなるテーパ面が形成してあることにより、前記ハンドル本体に対して前記操作部を近位端から遠位端方向に移動したときには、前記弾性部材が、前記テーパ面に対して、前記テーパ面における外径が大きい側に軸方向に相対移動することになり、前記弾性部材による前記操作用筒体への締付け力が強くなり、前記カテーテルチューブの遠位端部における曲折状態が保持される。
この結果、第1のカテーテル用ハンドルによれば、カテーテルの遠位端を曲げたままで形状を保持することができる。
ハンドル本体と、
前記ハンドル本体に対して軸方向に移動自在に装着される操作部と、
前記操作部と前記ハンドル本体の一部との間に装着され、前記操作部と共に前記ハンドル本体に対して軸方向に移動する押圧リングと、
前記ハンドル本体と前記押圧リングとの間に装着されるリング状の弾性部材とを有するカテーテル用ハンドルであって、
前記ハンドル本体にカテーテルチューブの近位端が固定してあり、
前記ハンドル本体の一部外周に、前記操作部および前記押圧リングが軸方向に移動自在に装着してあり、
前記押圧リングの一部内周には、遠位端方向に径が大きくなるテーパ面が形成してあり、
前記テーパ面に前記弾性部材の外周が接触しており、
前記弾性部材の内周は、前記ハンドル本体の一部外周に接触して軸方向に移動可能に構成してあり、
前記カテーテルチューブ内には、操作用ワイヤが挿通してあり、
前記操作用ワイヤの遠位端が前記カテーテルチューブの遠位端の一部に固定してあり、
前記操作用ワイヤの近位端が前記操作部の一部に固定してあり、
前記ハンドル本体に対する前記操作部および前記押圧リングの軸方向の移動に応じて、前記弾性部材に接触する前記ハンドル本体の軸方向位置が変化し、
前記ハンドル本体に対して、前記操作部および前記押圧リングを、遠位端から近位端方向に移動させることで、前記カテーテルチューブの遠位端部が曲折するとともに、前記弾性部材が、前記テーパ面における径が大きい側に押し付けられることを特徴とする。
これに対して、前記操作部および前記押圧リングを遠位端側に移動させるときには、前記弾性部材が、テーパ面における径が小さい側(近位端側)に押し付けられるので、前記弾性部材によるハンドル本体の締め付け力は大きくなり、移動させる(伸ばす)ためには大きな力が必要となる。すなわち、曲折状態にある遠位端部を伸ばすときの抵抗は大きいものとなる。
この結果、第2のカテーテル用ハンドルによれば、カテーテルの遠位端を曲げたままで形状を保持することができる。
ハンドル本体と、
前記ハンドル本体に対して軸方向に移動自在に装着される操作部と、
前記ハンドル本体と前記操作部との間に装着されるリング状の弾性部材と、
前記弾性部材を前記ハンドル本体の軸方向両側からはさんで装着されるバックアップリングとを有し、
前記操作部にカテーテルチューブの近位端が固定してあり、
前記ハンドル本体に前記弾性部材およびバックアップリングが装着してあり、
前記ハンドル本体の内周に前記操作部を構成する中軸部分である操作用筒体が入り込み、
前記ハンドル本体の内周に入り込んでいる前記操作用筒体の外周面には、遠位端方向に外径が小さくなるテーパ面が形成してあり、
前記テーパ面の外周面に、前記弾性部材の内周面と前記バックアップリングの内周面とが接触して軸方向に移動可能に構成してあり、
前記カテーテルチューブ内には、操作用ワイヤが挿通してあり、
前記操作用ワイヤの遠位端が前記カテーテルチューブの遠位端の一部に固定してあり、
前記操作用ワイヤの近位端が前記ハンドル本体の一部に固定してあり、
前記ハンドル本体に対して前記操作部を近位端から遠位端方向に向けて移動することで、前記カテーテルチューブの遠位端部が曲折するとともに、前記弾性部材が、前記テーパ面における外径が大きい側に軸方向に相対移動することを特徴とする。
また、前記操作用筒体の外周面には、遠位端方向に外径が小さくなるテーパ面が形成してあることにより、前記ハンドル本体に対して前記操作部を近位端から遠位端方向に移動
することで、前記弾性部材が、前記テーパ面における外径が大きい側に軸方向に相対移動することになり、前記弾性部材による前記操作用筒体の締付け力が強くなり、前記カテーテルチューブの遠位端部における曲折状態が保持される。
この結果、第3のカテーテル用ハンドルによれば、カテーテルの遠位端を曲げたままで形状を保持することができる。
図1に示すように、本発明の一実施形態に係る先端偏向操作可能カテーテル2は、たとえば心臓における不整脈の診断または治療に用いられるものであり、カテーテルチューブ
(チューブ部材)4の遠位端部に、先端チップ10と、複数の中間リング12とが装着してある。先端チップ10および中間リング12は、電極として機能し、たとえば接着剤による接着などでカテーテルチューブ4に対して接続固定される。
調整具32に固定されたままカテーテルチューブ4の近位端が遠位端側へ相対移動する。この場合には、当該操作用筒体28の操作によって、操作用ワイヤ30にはテンションが掛かり、カテーテルチューブ4には軸方向に圧縮する力が掛かることになる。なお、操作用ワイヤ30及びカテーテルチューブ4は、ほとんど軸方向の長さが変わることがないため、カテーテルチューブ4及び操作用ワイヤ30が曲がることになる。その結果として、図1に示すように、カテーテルチューブ4の遠位端部が、矢印Aで示すように、首振り偏向動作を行う。
て移動することで、Oリング42が、当該操作用筒体28に対して、テーパ面40における外径が小さい側から大きい側に軸方向に相対移動する。すなわち、この場合には、当該移動に応じてOリング42を円周方向へ広げる方向への力が増すことになる。なお、Oリング溝46の内径は不変であるため、当該移動に応じて操作用筒体28とOリング溝46との間隔が狭くなっていき、Oリング42が操作用筒体28及びキャップ44を押し付ける力が強くなり、Oリング42と操作用筒体28との摩擦力が増すことになる。
には、Oリング42は、操作用筒体28に対して、相対的に、テーパ面40における外径がもっとも小さい位置に位置している。そのため、この場合には、操作用筒体28とOリング溝46との間隔が最も広くなるため、Oリング42が操作用筒体28及びキャップ44を押し付ける力が最も小さくなり、Oリング42と操作用筒体28との摩擦力が低減されている。したがって、操作用摘み22をハンドル本体24に対して軸方向に離れる方向に向けて移動させる移動初期時には、操作用摘み22は、軽い力で軸方向に移動する。
図5および図6に示す実施形態に係る先端偏向操作可能カテーテル2aのカテーテル用ハンドル20aは、上述した第1実施形態に係る先端偏向操作可能カテーテル2のカテーテル用ハンドル20と、以下に示す以外は、同様な構成および作用効果を有し、重複する説明は省略する。
持っている。リング状弾性部材42aの内周面は、ハンドル本体24aの外周に対して接触しており、スライド片50の移動と共に、リング状弾性部材42aは軸方向に移動し、その内周面は、ハンドル本体24aの外周に対して摺動する。
図7に示す実施形態に係る先端偏向操作可能カテーテル102は、たとえば心臓における不整脈の診断または治療に用いられるものであり、カテーテルチューブ(チューブ部材)104の遠位端部に、先端チップ110と、複数の中間リング112とが装着してある。先端チップ110および中間リング112は、電極として機能し、たとえば接着剤による接着などでカテーテルチューブ104に対して接続固定される。
バックアップリング141,143の幅t1,t2によって調整することができる。隙間幅t4が、できる限り小さくなるようにバックアップリング141,143の幅t1,t2を調整することが好ましい。
4,4a… カテーテルチューブ
20,20a… カテーテル用ハンドル
22,22a… 操作用摘み
24… ハンドル本体
30… 操作用ワイヤ
40a,40a… テーパ面
42… Oリング
42a… リング状弾性部材
102… 先端偏向操作可能カテーテル
104… カテーテルチューブ
120… カテーテル用ハンドル
122… 操作用摘み
124… ハンドル本体
130… 操作用ワイヤ
140… テーパ面
142… Oリング
141、143… バックアップリング
Claims (9)
- ハンドル本体と、
前記ハンドル本体に対して軸方向に移動自在に装着される操作部と、
前記ハンドル本体と前記操作部との間に装着されるリング状の弾性部材とを有するカテーテル用ハンドルであって、
前記操作部にカテーテルチューブの近位端が固定してあり、
前記ハンドル本体に前記弾性部材が装着してあり、
前記ハンドル本体の内周に前記操作部を構成する操作用筒体が入り込み、
前記ハンドル本体の内周に入り込んでいる前記操作用筒体の外周面には、遠位端方向に外径が小さくなるテーパ面が形成してあり、
前記テーパ面の外周面に、前記弾性部材の内周面が接触して軸方向に移動可能に構成され、
前記カテーテルチューブ内には、操作用ワイヤが挿通してあり、
前記操作用ワイヤの遠位端が前記カテーテルチューブの遠位端の一部に固定してあり、
前記操作用ワイヤの近位端が前記ハンドル本体の一部に固定してあり、
前記ハンドル本体に対して前記操作部を近位端から遠位端方向に移動したときには、前記カテーテルチューブの遠位端部が曲折するとともに、前記弾性部材が、前記テーパ面に対して、前記テーパ面における外径が大きい側に軸方向に相対移動することを特徴とするカテーテル用ハンドル。 - 前記ハンドル本体に対して前記操作部を近位端から遠位端方向に移動したときには、前記カテーテルチューブの遠位端部が直線状態から曲折状態になるとともに、前記弾性部材が、前記テーパ面に対して、前記テーパ面における外径が大きい側に軸方向に相対移動することを特徴とする請求項1に記載のカテーテル用ハンドル。
- ハンドル本体と、
前記ハンドル本体に対して軸方向に移動自在に装着される操作部と、
前記操作部と前記ハンドル本体の一部との間に装着され、前記操作部と共に前記ハンドル本体に対して軸方向に移動する押圧リングと、
前記ハンドル本体と前記押圧リングとの間に装着されるリング状の弾性部材とを有するカテーテル用ハンドルであって、
前記ハンドル本体にカテーテルチューブの近位端が固定してあり、
前記ハンドル本体の一部外周に、前記操作部および前記押圧リングが軸方向に移動自在に装着してあり、
前記押圧リングの一部内周には、遠位端方向に径が大きくなるテーパ面が形成してあり、
前記テーパ面に前記弾性部材の外周が接触しており、
前記弾性部材の内周は、前記ハンドル本体の一部外周に接触して軸方向に移動可能に構成してあり、
前記カテーテルチューブ内には、操作用ワイヤが挿通してあり、
前記操作用ワイヤの遠位端が前記カテーテルチューブの遠位端の一部に固定してあり、
前記操作用ワイヤの近位端が前記操作部の一部に固定してあり、
前記ハンドル本体に対する前記操作部および前記押圧リングの軸方向の移動に応じて、前記弾性部材に接触する前記ハンドル本体の軸方向位置が変化し、
前記ハンドル本体に対して、前記操作部および前記押圧リングを、遠位端から近位端方向に移動させることで、前記カテーテルチューブの遠位端部が曲折するとともに、前記弾性部材が、前記テーパ面における径が大きい側に押し付けられることを特徴とするカテーテル用ハンドル。 - 前記ハンドル本体に対して、前記操作部および前記押圧リングを、遠位端から近位端方向に移動させることで、前記カテーテルチューブの遠位端部が直線状態から曲折状態になるとともに、前記弾性部材が、前記テーパ面における径が大きい側に押し付けられることを特徴とする請求項3に記載のカテーテル用ハンドル。
- ハンドル本体と、
前記ハンドル本体に対して軸方向に移動自在に装着される操作部と、
前記ハンドル本体と前記操作部との間に装着されるリング状の弾性部材と、
前記弾性部材を前記ハンドル本体の軸方向両側からはさんで装着されるバックアップリングとを有し、
前記操作部にカテーテルチューブの近位端が固定してあり、
前記ハンドル本体に前記弾性部材およびバックアップリングが装着してあり、
前記ハンドル本体の内周に前記操作部を構成する操作用筒体が入り込み、
前記ハンドル本体の内周に入り込んでいる前記操作用筒体の外周面には、遠位端方向に外径が小さくなるテーパ面が形成してあり、
前記テーパ面の外周面に、前記弾性部材の内周面と前記バックアップリングの内周面とが接触して軸方向に移動可能に構成してあり、
前記カテーテルチューブ内には、操作用ワイヤが挿通してあり、
前記操作用ワイヤの遠位端が前記カテーテルチューブの遠位端の一部に固定してあり、
前記操作用ワイヤの近位端が前記ハンドル本体の一部に固定してあり、
前記ハンドル本体に対して前記操作部を近位端から遠位端方向に向けて移動することで、前記カテーテルチューブの遠位端部が曲折するとともに、前記弾性部材が、前記テーパ面における外径が大きい側に軸方向に相対移動することを特徴とするカテーテル用ハンドル。 - 前記ハンドル本体に対して前記操作部を近位端から遠位端方向に向けて移動することで、前記カテーテルチューブの遠位端部が直線状態から曲折状態になるとともに、前記弾性部材が、前記テーパ面における外径が大きい側に軸方向に相対移動することを特徴とする請求項5に記載のカテーテル用ハンドル。
- 前記バックアップリングは、前記弾性部材よりも摩擦抵抗が小さい部材で構成してある請求項5または請求項6に記載のカテーテル用ハンドル。
- 前記バックアップリングは、前記弾性部材よりも硬度が高い部材で構成してある請求項5~7の何れかに記載のカテーテル用ハンドル。
- 前記バッグアップリングは、フッ素樹脂、または金属で構成してある請求項5~8の何れかに記載のカテーテル用ハンドル。
Priority Applications (1)
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AU2009250619A AU2009250619B2 (en) | 2008-05-20 | 2009-05-11 | Catheter handle |
Applications Claiming Priority (4)
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JP2008-132516 | 2008-05-20 | ||
JP2008-132514 | 2008-05-20 | ||
JP2008132514A JP4224122B1 (ja) | 2008-05-20 | 2008-05-20 | カテーテル用ハンドル |
JP2008132516A JP4224123B1 (ja) | 2008-05-20 | 2008-05-20 | カテーテル用ハンドル |
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WO2009142120A1 true WO2009142120A1 (ja) | 2009-11-26 |
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PCT/JP2009/058749 WO2009142120A1 (ja) | 2008-05-20 | 2009-05-11 | カテーテル用ハンドル |
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WO (1) | WO2009142120A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011140583A1 (en) * | 2010-05-11 | 2011-11-17 | Cathrx Ltd | A catheter handle |
JP2014508556A (ja) * | 2010-12-27 | 2014-04-10 | キャスアールエックス リミテッド | モジュール式カテーテル |
WO2015187547A1 (en) * | 2014-06-05 | 2015-12-10 | St. Jude Medical, Cardiology Division, Inc. | Mechanism for controlling unintentional movement of components |
US9314591B2 (en) | 2010-05-11 | 2016-04-19 | Cathrx Ltd | Catheter shape adjustment mechanism |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003319915A (ja) * | 2002-03-25 | 2003-11-11 | Biosense Webster Inc | 両方向性のマッピング・カテーテルおよび電気的活性度をマッピングする方法 |
JP2008086729A (ja) * | 2006-10-02 | 2008-04-17 | River Seiko:Kk | 心臓カテーテル |
-
2009
- 2009-05-11 AU AU2009250619A patent/AU2009250619B2/en not_active Ceased
- 2009-05-11 WO PCT/JP2009/058749 patent/WO2009142120A1/ja active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003319915A (ja) * | 2002-03-25 | 2003-11-11 | Biosense Webster Inc | 両方向性のマッピング・カテーテルおよび電気的活性度をマッピングする方法 |
JP2008086729A (ja) * | 2006-10-02 | 2008-04-17 | River Seiko:Kk | 心臓カテーテル |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011140583A1 (en) * | 2010-05-11 | 2011-11-17 | Cathrx Ltd | A catheter handle |
US9314591B2 (en) | 2010-05-11 | 2016-04-19 | Cathrx Ltd | Catheter shape adjustment mechanism |
US9539413B2 (en) | 2010-05-11 | 2017-01-10 | Cathrx Ltd | Catheter handle |
JP2014508556A (ja) * | 2010-12-27 | 2014-04-10 | キャスアールエックス リミテッド | モジュール式カテーテル |
WO2015187547A1 (en) * | 2014-06-05 | 2015-12-10 | St. Jude Medical, Cardiology Division, Inc. | Mechanism for controlling unintentional movement of components |
US10413704B2 (en) | 2014-06-05 | 2019-09-17 | St. Jude Medical, Cardiology Division, Inc. | Mechanism for controlling unintentional movement of components |
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AU2009250619A1 (en) | 2009-11-26 |
AU2009250619B2 (en) | 2012-05-17 |
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