WO2018174243A1 - ダイレータ - Google Patents
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- Publication number
- WO2018174243A1 WO2018174243A1 PCT/JP2018/011674 JP2018011674W WO2018174243A1 WO 2018174243 A1 WO2018174243 A1 WO 2018174243A1 JP 2018011674 W JP2018011674 W JP 2018011674W WO 2018174243 A1 WO2018174243 A1 WO 2018174243A1
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- WO
- WIPO (PCT)
- Prior art keywords
- coil body
- shaft
- dilator
- end side
- coil
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
-
- 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
- A61M29/00—Dilators with or without means for introducing media, e.g. remedies
-
- 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
- A61B90/02—Devices for expanding tissue, e.g. skin tissue
-
- 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
- A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
- A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
-
- 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
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M25/005—Catheters; Hollow probes characterised by structural features with embedded materials for reinforcement, e.g. wires, coils, braids
- A61M25/0052—Localized reinforcement, e.g. where only a specific part of the catheter is reinforced, for rapid exchange guidewire port
-
- 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
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M25/005—Catheters; Hollow probes characterised by structural features with embedded materials for reinforcement, e.g. wires, coils, braids
- A61M25/0053—Catheters; Hollow probes characterised by structural features with embedded materials for reinforcement, e.g. wires, coils, braids having a variable stiffness along the longitudinal axis, e.g. by varying the pitch of the coil or braid
-
- 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
- A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
- A61M25/008—Strength or flexibility characteristics of the catheter tip
-
- 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
- A61M25/06—Body-piercing guide needles or the like
- A61M25/0662—Guide tubes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00831—Material properties
- A61B2017/00902—Material properties transparent or translucent
- A61B2017/00915—Material properties transparent or translucent for radioactive radiation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B2017/3454—Details of tips
- A61B2017/3456—Details of tips blunt
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B2017/3454—Details of tips
- A61B2017/3458—Details of tips threaded
-
- 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
- A61B2090/3966—Radiopaque markers visible in an X-ray image
-
- 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
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M2025/006—Catheters; Hollow probes characterised by structural features having a special surface topography or special surface properties, e.g. roughened or knurled surface
-
- 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
- A61M25/06—Body-piercing guide needles or the like
- A61M25/0662—Guide tubes
- A61M2025/0687—Guide tubes having means for atraumatic insertion in the body or protection of the tip of the sheath during insertion, e.g. special designs of dilators, needles or sheaths
-
- 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
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M25/005—Catheters; Hollow probes characterised by structural features with embedded materials for reinforcement, e.g. wires, coils, braids
Definitions
- the present invention relates to a dilator.
- a sheath introducer when a catheter is inserted into a body lumen such as a blood vessel of a patient for treatment or diagnosis, an auxiliary device called a sheath introducer has been used.
- the sheath introducer includes a sheath for connecting a patient's body lumen and the outside of the patient, and a dilator inserted into the sheath and expanding a hole formed in the body surface.
- Patent Literature 1 describes a sheath introducer 200 including a sheath 80 and a dilator 70 (see FIG. 1 and the like).
- a introducer needle is used to puncture the patient's skin at a predetermined position, and a guide wire is inserted into a body lumen such as a blood vessel through the hole, and the dilator 70 is sheathed.
- the proximal end of the guide wire is inserted into the distal end of the sheath introducer 200 in the state of being inserted into 80, and the sheath introducer 200 is inserted into the body lumen along the guide wire.
- the tip of the dilator 70 increases the diameter of the hole formed in the skin.
- a catheter is inserted into the sheath introducer 200 and inserted into a body lumen such as a blood vessel.
- Such a sheath introducer is generally inserted from the skin of a patient, and as described in Patent Document 1, a short and linear shape is generally used.
- the introduction needle protrudes from the tip of the endoscope inserted from the patient's mouth or nose, not from the patient's skin, and is drilled at a predetermined position on the wall of the digestive tract, such as the stomach of the patient.
- a procedure to insert a wire insert the tip of the dilator into the proximal end of the guide wire, insert the dilator into the digestive tract wall along the guide wire, and expand the hole formed in the digestive tract wall has been done.
- Dilators used in such procedures are relatively long because they are inserted from the patient's mouth or nose, and because they pass through the digestive tract, they are generally used in a curved state. It was necessary to consider.
- An object of the present invention is to provide a dilator capable of easily expanding the diameter of a hole formed in a wall.
- a dilator in order to achieve such an object, includes a hollow shaft having a distal end outer diameter smaller than a proximal end outer diameter, and a grip portion connected to the proximal end of the shaft. And a spiral convex portion projecting to the outside is provided on an outer peripheral surface of the shaft, and the spiral convex portion has a gap in a portion adjacent to the shaft axis.
- spiral convex portion may be provided in a portion where the outer diameter increases from the distal end side to the proximal end side of the shaft.
- portion where the outer diameter increases may have a tapered shape in which the outer diameter on the distal end side of the shaft is smaller than the outer diameter on the proximal end side.
- the gap between the spiral convex portions may be gradually reduced from the distal end side to the proximal end side of the shaft.
- the shaft may be composed of a first coil obtained by winding one or more strands into a hollow shape.
- the spiral convex portion may be composed of a second coil in which one or more strands are wound around the outer peripheral surface of the shaft.
- the second coil may be formed by winding a single wire around the outer peripheral surface of the shaft.
- the strand of the second coil is wound in close contact with the axis on the base end side of the shaft, and along the axis on the tip side including the tapered portion of the shaft. It may be wound apart.
- the shaft is composed of a first coil in which one or a plurality of strands are wound in a hollow shape, and the spiral protrusion has one or a plurality of strands on the outer peripheral surface of the shaft. It consists of the wound 2nd coil, and each strand of the said 1st coil and the said 2nd coil may be wound by the mutually opposite direction.
- the shaft is composed of a first layer body in which a plurality of first strands are wound in a tapered hollow shape that narrows toward the tip, and the spiral protrusion is a surface of the first layer body.
- the multilayer body composed of a second layer body in which one second strand is wound in the opposite direction to the first layer body, The two strands are wound in close contact on the proximal end side, and may be wound apart on the distal end side including the tapered hollow portion.
- the distance between the second strands may gradually decrease in the cylindrical portion on the proximal end side of the tapered hollow shape portion.
- the shaft has a third layer body in which a plurality of third strands are wound in a hollow shape, and a plurality of shafts are spaced apart from the distal end of the third layer body to the base end side, and are arranged on the outer periphery of the third layer body.
- a fourth layer body wound with the fourth element wire, and the spiral protrusion is formed on the tip side of the tip of the fourth layer body, and on the outer periphery of the third layer body. You may consist of the 5th layer body which separated and wound five strands.
- a seventh layer body in which one seventh strand is separated from the outer periphery of the fourth layer body and wound in the same direction as the fifth layer body may be provided on the distal end side of the fourth layer body.
- the fifth layer body may be formed integrally with the fourth layer body.
- the seventh layer body may be formed integrally with the sixth layer body.
- the sixth layer body may be formed integrally with the seventh layer body.
- the distance between the sixth layer body and the seventh layer body may gradually decrease toward the base end side.
- the outer surface of the tip may be formed flat.
- the distal end flexibility is ensured, the pushability and the torque transmission are maintained, and the shaft is formed on the wall of the digestive tract or the like. Further, it is possible to provide a dilator capable of easily expanding the diameter of the formed hole.
- FIG. 1 is an overall view of a dilator according to a first embodiment of the present invention. It is the front-end
- FIG. 3 is a sectional view taken along line III-III in FIG. It is a front-end
- FIG. 7 is a sectional view taken along line VII-VII in FIG. 5. It is a front-end
- FIG. 1 is an overall view of a dilator according to a first embodiment of the present invention
- FIG. 2 is a front end view showing a lumen of the dilator (multilayer body) according to the first embodiment
- FIG. 3 is a sectional view taken along line III-III in FIG.
- the left side in the figure is the distal side (distal side) to be inserted into the body, and the right side is the proximal side (hand side, proximal side) operated by an operator such as a doctor.
- a dilator 1 includes a hollow coil body 3 formed in a hollow shape by winding a plurality of metal strands 3a, 3b, 3c, 3d, 3e, 3f, 3g, 3h, 3j and 3k, and a hollow
- the coil body 3 is composed of a coil body 5 composed of a single metal wire 5a wound on the surface of the coil body 3 in a direction opposite to the hollow coil body 3 (left-handed toward the tip) (right-handed toward the tip).
- a hollow connector 9 connected to the base end of the multilayer body 7.
- the multilayer body 7 has a cylindrical hollow shape at the proximal end portion P3, a tapered hollow shape at the intermediate portion P2, and a cylindrical hollow shape at the distal end portion P1.
- the metal strands 3a, 3b, 3c, 3d, 3e, 3f, 3g, 3h, 3j, and 3k correspond to “first strands”, and the hollow coil body 3 is referred to as “first layer body”. It corresponds to a “shaft” and a “first coil”.
- the metal strand 5a corresponds to a “second strand”, and the coil body 5 corresponds to a “second layer body”, a “spiral projection”, and a “second coil”.
- the intermediate portion P2 of the hollow coil body 3 corresponds to a “tapered hollow portion” and a “portion where the outer diameter increases (tapered shape)”.
- the connector 9 corresponds to a “gripping part”.
- the hollow coil body 3 is formed by winding metal strands 3a, 3b, 3c, 3d, 3e, 3f, 3g, 3h, 3j and 3k made of stainless steel into a hollow shape. It is.
- the hollow coil body 3 has a cylindrical hollow shape at the proximal end portion P3, a tapered hollow shape at the intermediate portion P2, a cylindrical hollow shape at the distal end portion P1, and an outer diameter that decreases toward the distal end. . That is, the hollow coil body 3 has a hollow shape in which the outer diameter at the distal end is smaller than the outer diameter at the proximal end.
- the common inscribed line of the hollow coil body 3 is indicated by a dotted line.
- a lumen 8 is formed inside the common inscribed line of the hollow coil body 3 (see FIG. 3).
- the wire constituting the hollow coil body 3 is a metal wire made of stainless steel, but is not limited to stainless steel, and is a metal wire made of a superelastic alloy such as nickel-titanium. It is not limited to metal strands, and may be resin strands.
- the saddle coil body 5 is formed by winding a single metal wire 5a made of stainless steel in a direction opposite to the hollow coil body 3 (left-handed toward the tip) (rightward toward the tip).
- the metal strand 5a is closely wound on the proximal end side, and is wound apart at the intermediate portion P2 and the distal end portion P1.
- a spiral convex portion that protrudes to the outside (the outermost surface and the outermost surface of the dilator 1) is provided on the outer peripheral surface 3 ⁇ / b> L of the hollow coil body 3.
- the spiral convex portion has a gap in an adjacent portion (adjacent metal strand) along the axis A of the hollow coil body 3.
- the coil body 5 is provided in the intermediate part P2 which is a part where the outer diameter of the hollow coil body 3 expands.
- the distance between the adjacent metal strands gradually decreases toward the base end side in the cylindrical hollow shape portion of the base end portion P3.
- the metal strand 5a is configured such that the distance between the adjacent metal strands gradually decreases toward the base end side in the hollow cylindrical portion of the base end portion P3.
- the length of the dilator 1 (multilayer body 7) is increased not only in this configuration but also in the case where the distance between the adjacent metal wires is constant from the distal end portion P1 toward the proximal end portion P3.
- the tip end flexibility of the dilator 1 (multilayer body 7) is ensured, and the pushability and torque transmission of the dilator 1 (multilayer body 7) are maintained. can do.
- the dilator 1 can be advanced not only by pushing operation but also by rotation operation by the screw effect of one metal strand 5a. Moreover, since the coil body 5 is provided in the portion where the outer diameter of the hollow coil body 3 is expanded, that is, the intermediate portion P2, the formed hole can be easily expanded in diameter.
- the distance between the adjacent metal strands is gradually decreased toward the base end side in the cylindrical hollow shape portion of the base end portion P3.
- the rigidity of the body 7) in the axial direction can be gradually changed, and the dilator 1 (multilayer body 7) can be easily made to enter the inside even when the approaching path is meandering. .
- the shaft is made of the hollow coil body 3 (first coil) in which a plurality of metal strands are wound in a hollow shape, the flexibility of the shaft and the transmission of torque by the shaft can be improved.
- the spiral convex portion is composed of the coil body 5 (second coil) in which one metal strand 5a is wound around the outer peripheral surface 3L of the hollow coil body 3, the spiral convex portion is easily formed.
- the flexibility of the tip of the dilator 1 can be secured by the elasticity of the second coil, and the torque transmission can be improved.
- the strands of the hollow coil body 3 and the coil body 5 are wound in opposite directions, even when the dilator 1 is rotated in the opening direction, the coil body 5 is in the closing direction. Since a force is applied, the hollow coil body 3 can be prevented from opening, and the force applied to the connector 9 of the dilator 1 can be transmitted to the distal end side.
- the metal wire 5a is stainless steel, but is not limited to stainless steel, may be a metal wire made of a superelastic alloy such as nickel-titanium, and is not limited to a metal wire. Resin strands may be used.
- the length of the dilator in this embodiment and other embodiments described hereinafter is, for example, 2000 mm, preferably 1600 mm-2500 mm, and the length of the tip portion P1 is, for example, 10 mm, preferably 0-100 mm.
- the length of the intermediate part P2 is, for example, 30 mm, preferably 5 to 100 mm.
- the inner diameter at the distal end of the hollow coil body 3 is, for example, 0.7 mm, preferably 0.4 to 1.0 mm, and the inner diameter at the proximal end of the hollow coil body 3 is, for example, 1.5 mm, preferably 1.0 to 3 mm. 0.0 mm.
- the outer diameter at the distal end of the coil body 5 is, for example, 1.84 mm, preferably 0.8 to 3.0 mm, and the outer diameter at the proximal end of the coil body 5 is, for example, 2.64 mm, preferably 1.4 mm to 5 mm. 0.0 mm.
- the diameters of the metal strands 3a-3h and 3j-3k are, for example, 0.21 mm, preferably 0.1 to 0.5 mm, and the diameter of the metal strand 5a is, for example, 0.36 mm, preferably 0.00. 1 to 0.5 mm.
- the distal end of the scissor connector 9 is connected to the proximal end of the hollow coil body 3 and the proximal end of the coil body 2.
- the connector 9 is made of resin and has a hollow shape having a lumen communicating with the lumen 8 of the hollow coil body 3.
- the guide wire is inserted into the lumen of the introduction needle, and then the introduction needle is removed, and the distal end of the dilator 1 of the present embodiment is inserted from the proximal end of the guide wire to the puncture portion. And the hole of a puncture part can be expanded by pushing forward while rotating the dilator 1.
- FIG. 4 is a front end view of a dilator (multilayer body) according to a second embodiment.
- the left side in the figure is the distal end side (distal side) to be inserted into the body, and the right side is the proximal end side (hand side, proximal side) operated by an operator such as a doctor.
- the dilator (multilayer body) of this embodiment is fundamentally the same structure as the dilator 1 (multilayer body 7) of 1st Embodiment, the same number is attached
- a dilator 10 includes a hollow coil body 3 that is formed into a hollow shape by winding a plurality of metal strands 3a, 3b, 3c, 3d, 3e, 3f, 3g, 3h, 3j, and 3k, and a hollow
- the coil body 3 is composed of a coil body 5 composed of a single metal wire 5a wound on the surface of the coil body 3 in a direction opposite to the hollow coil body 3 (left-handed toward the tip) (right-handed toward the tip).
- the multilayer body 17 and the hollow connector 9 connected to the base end of the multilayer body 17 are provided, but the multilayer body 17 of the dilator 10 has the most advanced portion 6 at the distal end of the hollow coil body 3.
- the two dilators are different in that the multilayer body 7 of the dilator 1 does not have the most advanced portion 6 at the tip of the hollow coil body 3.
- the hollow coil body 3 having the tip 6 provided at the tip corresponds to a “shaft”.
- the most advanced portion 6 is formed by pouring a brazing material (silver tin brazing material, gold tin brazing material, etc.) into the tip of the hollow coil body 3, and the shape thereof is a substantially cylindrical hollow shape. Further, the surface of the outermost line end portion 6 is not an uneven shape like the tip of the multilayer body 7 but is flat.
- a brazing material silver tin brazing material, gold tin brazing material, etc.
- the leading edge portion 6 having a flat surface is connected to the tip of the multilayer body 17, by first pushing the dilator against the puncture portion and then pushing it while rotating, Insertability into the puncture portion can be further improved.
- FIG. 5 is a front end view of the dilator (multilayer body) of the third embodiment
- FIG. 6 is a front end view showing a lumen of the dilator (multilayer body) of the third embodiment
- FIG. FIG. 7 is a sectional view taken along line VII-VII in FIG.
- the left side in the figure is the distal end side (distal side) inserted into the body, and the right side is the proximal side (hand side, proximal side) operated by an operator such as a doctor.
- the dilator 20 includes a hollow coil body 21 formed in a hollow shape by winding a plurality of metal strands 21a, 21b, 21c, 21d, 21e, 21f, 21g, 21h, 21j and 21k, and a hollow A plurality of metal strands 22 a, 22 b, 22 c, 22 d, 22 e, 22 f, 22 g, 22 h, 22 j, 22 k, 22 m, 22 n, spaced from the distal end of the coil body 21 to the base end side, A coil body 22 formed by winding 22p, 22q, 22r, and 22s in the same direction as the hollow coil body 21 (left-handed toward the tip), and a coil body 22 that is spaced from the tip of the coil body 22 toward the base end side.
- a plurality of metal strands 23a (in FIG. 5 and 6, only one metal strand 23a is provided with a reference number) on the outer periphery of the body 22 is a coil body 22 (left-handed toward the tip) and A coil body 23 formed by winding in the opposite direction (right-handed toward the tip) and one metal strand 25a on the outer periphery of the coil body 22 are separated from the tip side of the tip of the coil body 23.
- a hollow connector 9 connected to the base end of the multilayer body 27.
- the shape of the multilayer body 27 is a cylindrical hollow shape on the base end side of the base end portion P3, like the multilayer body 7 and the multilayer body 17, but in the vicinity of the distal end portion, the multilayer body 7 and the multilayer body 17 In contrast, it is not a tapered end shape but a hollow cylindrical shape with a step.
- the metal strands 21a, 21b, 21c, 21d, 21e, 21f, 21g, 21h, 21j and 21k correspond to “third strands”, and the hollow coil body 21 corresponds to “third layer”. To do.
- metal strands 22a, 22b, 22c, 22d, 22e, 22f, 22g, 22h, 22j, 22k, 22m, 22n, 22p, 22q, 22r and 22s correspond to “fourth strand” and are coil bodies.
- Reference numeral 22 corresponds to a “fourth layer body” and a “part where the outer diameter increases”.
- the metal strand 24a corresponds to a “fifth strand”, and the coil body 24 corresponds to a “fifth layer”.
- the metal strand 23a corresponds to a “sixth strand”, and the coil body 23 corresponds to a “sixth layer”.
- the hollow coil body 21 and the coil body 22 correspond to a “shaft” and a “first coil”.
- the metal strand 25a corresponds to a “seventh strand”
- the hollow coil body 25 corresponds to a “seventh layer”.
- the hollow coil body 24 and the hollow coil body 25 correspond to a “spiral convex portion” and a “second coil”.
- the hollow coil body 21 is formed by twisting metal strands 21a, 21b, 21c, 21d, 21e, 21f, 21g, 21h, 21j, and 21k made of stainless steel into a hollow shape. It is.
- the hollow coil body 21 has a cylindrical hollow shape from the tip to the connector 9.
- the common inscribed line of the hollow coil body 21 is indicated by a dotted line (the innermost side among the three dotted lines).
- a lumen 28 is formed inside the common inscribed line of the hollow coil body 21 (see FIG. 7).
- the coil body 22 is made of 16 stainless steel wires 22a, 22b, 22c, 22d, 22e, 22f, 22g, 22h, 22j, 22k, 22m, 22n, 22p, 22q as shown in FIG. 22r and 22s are formed by twisting the surface of the hollow coil body 21.
- the coil body 22 also has a hollow cylindrical shape from the tip to the connector 9.
- the common inscribed line of the coil body 22 is indicated by a dotted line (middle of the three dotted lines).
- the coil body 23 is formed by twisting 23 metal strands 23 a made of stainless steel on the surface of the coil body 22.
- the coil body 23 also has a cylindrical hollow shape from the tip to the connector 9.
- the common inscribed line of the coil body 23 is indicated by a dotted line (outermost of the three dotted lines).
- the coil body 22 is formed by twisting the surface of the hollow coil body 21. Therefore, the hollow coil body 21 and the coil body 22 corresponding to the shaft have a hollow shape in which the outer diameter of the distal end is smaller than the outer diameter of the proximal end.
- the coil body 24 is formed by forming a single metal wire 24a made of stainless steel on the surface of the coil body 21, and the coil body 25 is made of a single metal wire 25a made of stainless steel. 22 is formed on the surface.
- the hollow coil body 21, the coil body 22, and the coil body 23 are wound with their respective strands in close contact, and the coil body 24 and the coil body 25 are wound with their strands spaced apart.
- the coil body 24 is provided on the outer circumferential surface 21 ⁇ / b> L of the hollow coil body 21 with a spiral convex portion that protrudes to the outside (the outermost surface and the outermost surface of the dilator 20).
- a spiral convex portion that protrudes to the outside is provided.
- the spiral convex portion has a gap in an adjacent portion (adjacent metal strand) along the axis A of the hollow coil body 21.
- the coil body 25 is provided in the coil body 22 which is a part where the outer diameter of the shaft is enlarged.
- the strand which comprises the hollow coil body 21, the coil body 22, the coil body 23, the coil body 24, and the coil body 25 was made into the metal strand consisting of stainless steel, it is not restricted to stainless steel, It may be a metal strand made of a superelastic alloy such as nickel-titanium, and is not limited to a metal strand but may be a resin strand.
- the dilator 20 (multilayer body 27) of the present embodiment when the length of the dilator 20 (multilayer body 27) is increased and the dilator 20 (multilayer body 27) is curved, the dilator 20 (multilayer body 27). 27) can be ensured, and the pushability and torque transmission of the dilator 20 (multilayer body 27) can be maintained. Moreover, the dilator 20 can be advanced not only by pushing operation but by rotation operation by the screw effect of one metal strand 24a and the metal strand 25a. Moreover, since the coil body 25 is provided in the coil body 22 which is a part where the outer diameter of the shaft is expanded, the formed hole can be easily expanded in diameter.
- the dilator 20 (multilayer body 27) can be configured by gradually reducing the distance between adjacent metal strands of the metal strand 25a and the metal strand 24a toward the base end side. ) In the axial direction can be gradually changed, and the dilator 20 (multilayer body 27) can easily enter the inside even if the approaching path is meandering.
- the shaft is composed of the hollow coil body 21 and the coil body 22 (first coil) in which a plurality of metal strands are wound in a hollow shape, the flexibility of the shaft and the transmission of torque by the shaft are improved. Can be made.
- the coil body in which the spiral convex portion is wound around the outer peripheral surface 22T of the coil body 24 (second coil) and the coil body 22 in which one metal strand is wound around the outer peripheral surface 21L of the hollow coil body 21. 25 (second coil) the spiral convex portion can be easily formed, and the elasticity of the second coil can ensure the flexibility of the tip of the dilator 20 and improve the torque transmission. it can.
- the dilator 20 is moved in the direction in which the hollow coil body 21 and the coil body 22 are opened. Even if it is rotated, force is applied to the coil body 24 and the coil body 25 in the closing direction, so that the hollow coil body 21 and the coil body 22 can be prevented from opening, and the force applied to the connector 9 of the dilator 20 Can be transmitted to the tip side.
- FIG. 8 is a front end view of a dilator (multilayer body) according to a fourth embodiment.
- the left side in the figure is the distal end side (distal side) inserted into the body, and the right side is the proximal end side (hand side, proximal side) operated by an operator such as a doctor.
- the dilator 30 includes a hollow coil body 31 formed into a hollow shape by winding a plurality of metal strands 31a, 31b, 31c, 31d, 31e, 31f, 31g, 31h, 31j and 31k, and a hollow A coil body 32 formed by winding one metal element wire 32a on the outer periphery of the hollow coil body 31 from the front end of the coil body 31 in the opposite direction to the hollow coil body 31 (clockwise toward the front end); A plurality of metal strands 33a (only one metal strand 33a is given a reference number in FIG. 8) on the outer periphery of the coil body 32, spaced from the distal end of the coil body 32 to the base end side.
- the coil body 33 formed by winding in the opposite direction (left-handed toward the tip) from the coil body 32 (clockwise toward the tip), and the coil body 32 on the tip side of the tip of the coil body 33
- One metal strand 35a on the outer periphery A multilayer body 37 composed of a coil body 35 that is spaced apart and wound in the same direction as the coil body 32 (right-handed toward the distal end) (right-handed toward the distal end), and a base end of the multilayer body 37 And a hollow connector 9 connected thereto.
- the multilayer body 37 has a stepped cylindrical hollow shape similar to the multilayer body 27 of the third embodiment, but the coil body 22 and the coil body 24 of the multilayer body 27 of the third embodiment are configured as separate members.
- the multilayer body 37 of the present embodiment is different in that the coil body 32 is integrally and continuously configured. That is, as shown in FIG. 8, the coil body 32 is wound with the metal wire 32 a closely attached on the proximal end side and spaced apart on the distal end side.
- the portions of the hollow coil body 31 and the coil body 32 that are wound in close contact correspond to a “shaft” and a “first coil”.
- the portion of the coil body 32 that is wound apart and the coil body 35 correspond to a “spiral convex portion” and a “second coil”. Further, the portion of the coil body 32 that is wound in close contact corresponds to a “portion in which the outer diameter increases”.
- the hollow coil body 31 is formed into a hollow shape by twisting ten metal wires 31a, 31b, 31c, 31d, 31e, 31f, 31g, 31h, 31j and 31k made of stainless steel. It is a thing.
- the hollow coil body 31 has a cylindrical hollow shape from the tip to the connector 9.
- the coil body 32 is formed by winding a single metal wire 32 a made of stainless steel around the surface of the coil body 31.
- the coil body 32 also has a hollow cylindrical shape from the tip to the connector 9.
- the coil body 33 is formed by twisting a metal wire 33 a made of 23 stainless steel on the surface of the coil body 32.
- the hollow coil body 33 also has a cylindrical hollow shape from the tip to the connector 9.
- a portion of the coil body 32 that is closely wound is formed by twisting the surface of the hollow coil body 31. Therefore, the portion in which the hollow coil body 31 and the coil body 32 corresponding to the shaft are wound in close contact with each other has a hollow shape in which the outer diameter of the distal end is smaller than the outer diameter of the proximal end.
- the coil body 35 is formed by forming a single metal wire 35 a made of stainless steel on the surface of the coil body 32.
- the hollow coil body 31 and the coil body 33 are wound with their respective wires in close contact with each other (see FIG. 8).
- the coil body 32 is provided with a spirally protruding portion that protrudes to the outside (the outermost surface and the outermost surface of the dilator 30) on the outer peripheral surface 31 ⁇ / b> L of the hollow coil body 31 by a portion that is wound apart.
- a spiral convex portion that protrudes to the outside is provided on the outer peripheral surface 32 ⁇ / b> B of the portion of the coil body 32 that is closely wound.
- the spiral convex portion has a gap in an adjacent portion (adjacent metal strand) along the axis A of the hollow coil body 31.
- the coil body 35 is provided in the part by which the coil body 32 which is a part where the outer diameter of a shaft expands is closely_contact
- the strands constituting the hollow coil body 31, the coil body 32, the coil body 33, and the coil body 35 are metal strands made of stainless steel, but not limited to stainless steel, nickel-titanium, etc.
- a metal strand made of a superelastic alloy may be used, and not only a metal strand but also a resin strand.
- the dilator 30 (multilayer body 37) of the present embodiment when the length of the dilator 30 (multilayer body 37) is increased and the dilator 30 (multilayer body 37) is curved, the dilator 30 (multilayer body 37). 37) can be secured, and the pushability and torque transmission of the dilator 30 (multilayer body 37) can be maintained. Further, when the multilayer body 37 is rotated, the screw effect by the single metal wire 32a and the metal wire 35a continuous from the base end to the tip end of the coil body 32 is further improved, and only the pushing operation is performed. The dilator 30 can be easily moved forward by a rotation operation. Moreover, since the coil body 35 is provided in the part by which the coil body 32 which is the part which the outer diameter of a shaft expands is closely_contact
- the dilator 30 (multilayer body 37) can be configured by gradually reducing the distance between adjacent metal strands of the metal strand 32a and the metal strand 35a toward the base end side. ) In the axial direction can be gradually changed, and the dilator 30 (multilayer body 37) can easily enter the inside even if the approaching path is meandering.
- the shaft is composed of a hollow coil body 31 and a coil body 32 (first coil) in which a plurality of metal strands are wound in a hollow shape, the flexibility of the shaft and the transmission of torque by the shaft are improved. Can be made.
- the strands of the hollow coil body 31, the coil body 32, and the coil body 35 are wound in opposite directions, even if the dilator 30 is rotated in the direction in which the hollow coil body 31 is opened, the coil body 32 is rotated. Since a force is applied to the coil body 35 in the closing direction, the hollow coil body 31 can be prevented from opening, and the force applied to the connector 9 of the dilator 30 can be transmitted to the distal end side.
- FIG. 9 is a front view of a dilator (multilayer body) according to a fifth embodiment.
- the left side in the figure is the distal end side (distal side) to be inserted into the body
- the right side is the proximal end side (hand side, proximal side) operated by an operator such as a doctor.
- a dilator 40 includes a hollow coil body 41 formed in a hollow shape by winding a plurality of metal strands 41a, 41b, 41c, 41d, 41e, 41f, 41g, 41h, 41j and 41k, and a hollow A plurality of metal wires 42 a, 42 b, 42 c, 42 d, 42 e, 42 f, 42 g, 42 h, 42 j, 42 k, 42 m, 42 n, spaced from the distal end of the coil body 41 to the base end side, A coil body 42 formed by winding 42p, 42q, 42r, and 42s in the same direction (left-handed toward the tip) as the hollow coil body 21 (left-handed toward the tip), and from the tip of the hollow coil body 42 A coil body 43 formed by winding one metal wire 43a on the outer periphery of the hollow coil body 42 in the opposite direction to the hollow coil body 42 (right-handed toward the tip); On the distal end side of the distal end of
- the multilayer body 47 has a stepped cylindrical hollow shape similar to the multilayer body 27 of the third embodiment, but the coil body 25 and the coil body 23 of the multilayer body 27 of the third embodiment are configured as separate members.
- the multilayer body 47 of the present embodiment is different in that the coil body 43 is integrally formed continuously. That is, as shown in FIG. 9, the coil body 43 is wound with the metal wire 43 a closely attached on the proximal end side and spaced apart on the distal end side.
- the hollow coil body 41 and the coil body 42 correspond to a “shaft” and a “first coil”.
- the portion of the coil body 43 that is wound apart and the coil body 44 correspond to a “spiral convex portion” and a “second coil”. Further, the coil body 42 corresponds to a “portion where the outer diameter increases”.
- the hollow coil body 41 is formed into a hollow shape by twisting ten metal wires 41a, 41b, 41c, 41d, 41e, 41f, 41g, 41h, 41j and 41k made of stainless steel. It is a thing.
- the hollow coil body 41 has a cylindrical hollow shape from the tip to the connector 9.
- the coil body 42 includes metal strands 42a, 42b, 42c, 42d, 42e, 42f, 42g, 42h, 42j, 42k, 42m, 42n, 42p, 42q, 42r and 42s made of 16 stainless steel, It is wound on the surface of the coil body 41 by winding in the same direction as the hollow coil body 41 (left-handed toward the tip).
- the coil body 42 also has a hollow cylindrical shape from the tip to the connector 9.
- the coil body 43 is formed by winding a single metal wire 43 a made of stainless steel around the surface of the coil body 42.
- the hollow coil body 43 also has a cylindrical hollow shape from the tip to the connector 9.
- the coil body 44 is obtained by winding a single metal wire 44a made of stainless steel in the same direction (right winding toward the tip) as the coil body 43 (right winding toward the tip). Formed on the surface.
- the hollow coil body 41 and the coil body 42 are wound with their respective wires in close contact with each other (see FIG. 9).
- the coil body 42 is formed by twisting the surface of the hollow coil body 41. Therefore, the hollow coil body 41 and the coil body 42 corresponding to the shaft have a hollow shape in which the outer diameter at the distal end is smaller than the outer diameter at the proximal end.
- the coil body 44 is provided with a spiral convex portion projecting to the outside (the outermost surface and the outermost surface of the dilator 40) on the outer peripheral surface 41L of the hollow coil body 41, and the outer peripheral surface 42T of the coil body 42 from the coil body 43.
- a spiral convex portion protruding outward is provided.
- the spiral convex portion has a gap in an adjacent portion (adjacent metal strand) along the axis A of the hollow coil body 41.
- the coil body 43 is provided in the coil body 42 which is a part where the outer diameter of the shaft is enlarged.
- the strands constituting the hollow coil body 41, the coil body 42, the coil body 43, and the coil body 44 are metal strands made of stainless steel, but are not limited to stainless steel, but may be nickel-titanium, etc.
- a metal strand made of a superelastic alloy may be used, and not only a metal strand but also a resin strand.
- the dilator 40 (multilayer body 47) of the present embodiment when the length of the dilator 40 (multilayer body 47) is increased and the dilator 40 (multilayer body 47) is curved, the dilator 40 (multilayer body 47). 47) can be secured, and the pushability and torque transmission of the dilator 40 (multilayer body 47) can be maintained. Further, when the multilayer body 47 is rotated, the screw effect by the single metal wire 43a and the metal wire 44a continuous from the base end to the tip end of the coil body 43 is further improved, and only the pushing operation is performed. The dilator 40 can be easily moved forward by a rotating operation. Moreover, since the coil body 43 is provided in the coil body 42 which is a part where the outer diameter of the shaft is enlarged, the diameter of the formed hole can be further increased.
- the dilator 40 (multilayer body 47) can be configured by gradually reducing the distance between adjacent metal strands of the metal strand 44a and the metal strand 43a toward the base end side. ) In the axial direction can be gradually changed, and the dilator 40 (multilayer body 47) can easily enter the inside even if the approaching path is meandering.
- the shaft is composed of the hollow coil body 41 and the coil body 4 (first coil) in which a plurality of metal strands are wound in a hollow shape, the flexibility of the shaft and the transmission of torque by the shaft are improved. Can be made.
- the coil body in which the spiral convex portion is wound around the outer peripheral surface 42B of the coil body 44 (second coil) and the coil body 42 in which one metal strand is wound around the outer peripheral surface 41L of the hollow coil body 41. 43 (second coil) the spiral convex portion can be easily formed, and the flexibility of the tip of the dilator 40 can be secured by the elasticity of the second coil, and torque transmission can be improved. it can.
- the dilator 40 is rotated in the direction in which the hollow coil body 41 and the coil body 42 are opened. Even if it does, since force is applied to the coil body 43 and the coil body 44 in the closing direction, the hollow coil body 41 and the coil body 42 can be prevented from opening, and the force applied to the connector 9 of the dilator 40 can be reduced. Can communicate to the tip side.
- FIG. 10 is a front end view of a dilator (multilayer body) according to a sixth embodiment.
- the left side in the figure is the distal end side (distal side) inserted into the body, and the right side is the proximal end side (hand side, proximal side) operated by an operator such as a doctor.
- a dilator 50 includes a hollow coil body 51 formed by hollowing a plurality of metal strands 51a, 51b, 51c, 51d, 51e, 51f, 51g, 51h, 51j and 51k, and a hollow A plurality of metal strands 52 a, 52 b, 52 c, 52 d, 52 e, 52 f, 52 g, 52 h, 52 j, 52 k, 52 m, 52 n, spaced from the distal end of the coil body 51 to the base end side, A coil body 52 formed by winding 52p, 52q, 52r, and 52s in the same direction (left-handed toward the tip) as the hollow coil body 51 (left-handed toward the tip), and from the tip of the hollow coil body 51, A coil formed by winding one metal strand 53a around the outer periphery of the hollow coil body 51 and the coil body 52 in the opposite direction to the hollow coil body 52 (clockwise toward the tip). Comprising a multilayer body 57 made up
- the multilayer body 57 has a stepped cylindrical hollow shape similar to the multilayer body 27 of the third embodiment, but the coil body 24, the coil body 25, and the coil body 23 of the multilayer body 27 of the third embodiment are different.
- the multilayer body 57 of the present embodiment is different from that of the member in that the coil body 53 is integrally formed continuously. That is, as shown in FIG. 10, the coil body 53 has a single metal strand 53 a wound tightly on the proximal end side, and on the distal end side of the coil body 52 and the distal end side of the coil body 51, It is wound apart.
- the hollow coil body 51 and the coil body 52 correspond to a “shaft” and a “first coil”.
- the portions of the coil body 53 that are wound apart are equivalent to a “spiral convex portion” and a “second coil”.
- the coil body 52 corresponds to a “portion where the outer diameter increases”.
- the hollow coil body 51 has a hollow shape formed by twisting ten metal strands 51a, 51b, 51c, 51d, 51e, 51f, 51g, 51h, 51j and 51k made of stainless steel. It is a thing.
- the hollow coil body 51 has a cylindrical hollow shape from the tip to the connector 9.
- the coil body 52 is made of 16 stainless steel wires 52a, 52b, 52c, 52d, 52e, 52f, 52g, 52h, 52j, 52k, 52m, 52n, 52p, 52q, 52r and 52s.
- the coil body 51 is wound in the same direction as the hollow coil body 51 (left-handed toward the tip) and formed on the surface of the coil body 51.
- the coil body 52 also has a hollow cylindrical shape from the tip to the connector 9.
- the coil body 53 is formed by winding a single metal wire 53 a made of stainless steel around the surfaces of the coil body 51 and the coil body 52.
- the hollow coil body 53 also has a cylindrical hollow shape from the tip to the connector 9.
- the hollow coil body 51 and the coil body 52 are wound with their respective wires in close contact with each other (see FIG. 10).
- the coil body 52 is formed by twisting the surface of the hollow coil body 51. Therefore, the hollow coil body 51, the coil body 52, and the coil body 53 corresponding to the shaft, which are closely wound, have a hollow shape in which the outer diameter of the distal end is smaller than the outer diameter of the proximal end. .
- the coil body 53 is provided with spiral convex portions that project outward (outermost surface, outermost surface of the dilator 50) on the outer peripheral surface 51L of the hollow coil body 51 and the outer peripheral surface 52T of the coil body 52.
- the spiral convex portion has a gap in an adjacent portion (adjacent metal strand) along the axis A of the hollow coil body 51.
- the coil body 53 is provided in the coil body 52 which is a part where the outer diameter of a shaft expands.
- the strands constituting the hollow coil body 51, the coil body 52, and the coil body 53 are metal strands made of stainless steel, but are not limited to stainless steel, and a superelastic alloy such as nickel-titanium.
- the metal strand which consists of may be sufficient, and it may be not only a metal strand but a resin strand.
- the dilator 50 (multilayer body 57) of the present embodiment when the length of the dilator 50 (multilayer body 57) is increased and the dilator 50 (multilayer body 57) is curved, the dilator 50 (multilayer body 57). 57) can be secured, and the pushability and torque transmission of the dilator 50 (multilayer body 57) can be maintained. Further, when the multilayer body 57 is rotated, the screw effect by one metal strand 53a continuous from the proximal end to the distal end of the coil body 53 is further improved, and not only by pushing operation but also by rotating operation. The dilator 50 can be easily advanced. Moreover, since the coil body 53 is provided in the coil body 52 which is a part where the outer diameter of the shaft is enlarged, the diameter of the formed hole can be further increased.
- the dilator 50 (multilayer body 57) in the axial direction is configured.
- the rigidity can be gradually changed, and even if the approaching path is meandering, the effect of allowing the dilator 50 (multilayer body 57) to easily enter the inside is produced.
- the shaft is composed of the hollow coil body 51 and the coil body 52 (first coil) in which a plurality of metal strands are wound in a hollow shape
- the flexibility of the shaft and the transmission of torque by the shaft are improved.
- the spiral convex portion is composed of a coil body 53 (second coil) in which one metal strand is wound around the outer peripheral surface 51L of the hollow coil body 51 and the outer peripheral surface 52T of the coil body 52
- the spiral shape can be easily formed, and the flexibility of the tip of the dilator 50 can be secured by the elasticity of the second coil, and the torque transmission can be improved.
- the hollow coil body 51 and the strands of the coil body 52 and the coil 53 are wound in opposite directions, even if the dilator 50 is rotated in the direction in which the hollow coil body 51 and the coil body 52 are opened, Since a force is applied to the coil body 53 in the closing direction, the hollow coil body 51 and the coil body 52 can be prevented from opening, and the force applied to the connector 9 of the dilator 50 can be transmitted to the distal end side.
- FIG. 11 is a front-end
- the left side in the figure is the distal end side (distal side) to be inserted into the body, and the right side is the proximal end side (hand side, proximal side) operated by an operator such as a doctor.
- a dilator 60 includes a hollow coil body 61 that is formed into a hollow shape by winding a plurality of metal strands 61a, 61b, 61c, 61d, 61e, 61f, 61g, 61h, 61j, and 61k, and a hollow A plurality of metal strands 62 a, 62 b, 62 c, 62 d, 62 e, 62 f, 62 g, 62 h, 62 j, 62 k, 62 m, 62 n, spaced from the distal end of the coil body 61 toward the base end side, From the tip of the hollow coil body 61, the coil body 62 formed by winding 62p, 62q, 62r, and 62s in the same direction (left-handed toward the tip) as the hollow coil body 61 (left-hand toward the tip) A coil formed by winding one metal wire 63a on the outer periphery of the
- the multilayer body 67 of the dilator 60 is at the distal end 66 of the hollow coil body 61.
- the two dilators are different in that the multilayer body 57 of the dilator 50 does not have the most advanced portion 66 at the tip of the hollow coil body 51.
- the most advanced portion 66 is formed by pouring a brazing material (silver tin brazing material, gold tin brazing material, etc.) into the tip of the hollow coil body 61, and the shape thereof is a substantially cylindrical hollow shape. Further, the surface of the outermost line end portion 66 is not an uneven shape like the tip of the multilayer body 57 but is flat.
- a brazing material silver tin brazing material, gold tin brazing material, etc.
- the multilayer body 67 has a stepped cylindrical hollow shape similar to the multilayer body 27 of the third embodiment, but the coil body 24, the coil body 25, and the coil body 23 of the multilayer body 27 of the third embodiment are configured as separate members.
- the multilayer body 67 of the present embodiment is different in that the coil body 63 is integrally formed continuously. That is, as shown in FIG. 11, the coil body 63 is wound with the metal wire 63 a closely attached on the proximal end side, and is separated on the distal end side of the coil body 62 and the distal end side of the coil body 61. It is wound.
- the hollow coil body 61 and the coil body 62 correspond to a “shaft” and a “first coil”.
- the portions of the coil body 63 that are wound apart are equivalent to a “spiral convex portion” and a “second coil”.
- the coil body 62 corresponds to “a portion where the outer diameter increases”.
- the hollow coil body 61 is formed into a hollow shape by twisting ten metal wires 61a, 61b, 61c, 61d, 61e, 61f, 61g, 61h, 61j and 61k made of stainless steel. It is a thing.
- the hollow coil body 61 has a cylindrical hollow shape from the tip to the connector 9.
- the coil body 62 is made of 16 stainless steel wires 62a, 62b, 62c, 62d, 62e, 62f, 62g, 62h, 62j, 62k, 62m, 62n, 62p, 62q, 62r and 62s. It is formed on the surface of the coil body 61 by winding in the same direction as the hollow coil body 61 (left-handed toward the tip).
- the hollow coil body 62 also has a cylindrical hollow shape from the tip to the connector 9.
- the coil body 63 is formed by winding a single metal wire 63 a made of stainless steel around the surfaces of the coil body 61 and the coil body 62.
- the hollow coil body 63 also has a cylindrical hollow shape from the tip to the connector 9.
- the hollow coil body 61 and the coil body 62 are wound with their respective wires in close contact (see FIG. 11).
- the coil body 62 is formed by twisting the surface of the hollow coil body 61. Therefore, the hollow coil body 61 and the coil body 62 corresponding to the shaft have a hollow shape in which the outer diameter of the distal end is smaller than the outer diameter of the proximal end.
- spiral convex portions that project to the outside are provided on the outer peripheral surface 61 ⁇ / b> L of the hollow coil body 61 and the outer peripheral surface 62 ⁇ / b> T of the coil body 62.
- the spiral convex portion has a gap in an adjacent portion (adjacent metal strand) along the axis A of the hollow coil body 61.
- the coil body 63 is provided in the coil body 62 which is a part where the outer diameter of the shaft is enlarged.
- the strands constituting the hollow coil body 61, the coil body 62, and the coil body 63 are metal strands made of stainless steel.
- the present invention is not limited to stainless steel, and is a superelastic alloy such as nickel-titanium.
- the metal strand which consists of may be sufficient, and it may be not only a metal strand but a resin strand.
- the dilator 60 (multilayer body 67) of the present embodiment since the most advanced portion 66 having a flat surface is connected to the tip of the multilayer body 67, the dilator is first pushed against the puncture portion and then rotated. In the case where the insertion property to the puncture portion can be further improved by pushing in, the length of the dilator 60 (multilayer body 67) is increased, and the dilator 60 (multilayer body 67) is curved. The tip end flexibility of the dilator 60 (multilayer body 67) can be ensured, and the pushability and torque transmission of the dilator 60 (multilayer body 67) can be maintained.
- the screw effect by the single metal wire 63a continuous from the proximal end to the distal end of the coil body 63 is further improved, and not only by the pushing operation but also by the rotating operation.
- the dilator 60 can be easily advanced.
- the coil body 63 is provided in the coil body 62 which is a part where the outer diameter of the shaft is enlarged, the diameter of the formed hole can be further increased.
- the dilator 60 in the axial direction is configured.
- the rigidity can be gradually changed, and even if the approaching path is meandering, there is an effect that the dilator 60 (multilayer body 67) can easily enter the inside.
- the shaft is composed of a hollow coil body 61 and a coil body 62 (first coil) in which a plurality of metal wires are wound in a hollow shape, the flexibility of the shaft and the transmission of torque by the shaft are improved. Can be made.
- the spiral convex portion is composed of a coil body 63 (second coil) in which one metal wire is wound around the outer peripheral surface 61L of the hollow coil body 61 and the outer peripheral surface 62T of the coil body 62, the spiral shape is formed. Can be easily formed, and due to the elasticity of the second coil, the flexibility of the tip of the dilator 60 can be secured and the torque transmission can be improved.
- the strands of the hollow coil body 61 and the coil body 62 and the coil 63 are wound in opposite directions, even if the dilator 60 is rotated in the direction in which the hollow coil body 61 and the coil body 62 are opened, Since a force is applied to the coil body 63 in the closing direction, the hollow coil body 61 and the coil body 62 can be prevented from opening, and the force applied to the connector 9 of the dilator 60 can be transmitted to the distal end side.
- FIG. 12 is a front view of a dilator (multilayer body) according to an eighth embodiment.
- the left side in the figure is the distal end side (distal side) to be inserted into the body
- the right side is the proximal end side (hand side, proximal side) operated by an operator such as a doctor.
- the dilator 70 includes a hollow coil body 21 formed in a hollow shape by winding a plurality of metal strands 21a, 21b, 21c, 21d, 21e, 21f, 21g, 21h, 21j and 21k, and the hollow A plurality of metal strands 22 a, 22 b, 22 c, 22 d, 22 e, 22 f, 22 g, 22 h, 22 j, 22 k, 22 m, 22 n, spaced from the distal end of the coil body 21 to the base end side, A coil body 22 formed by winding 22p, 22q, 22r, and 22s in a direction opposite to the hollow coil body 21 (right-handed toward the tip), and a coil body 21 on the tip side of the tip of the coil body 22 A multilayer body 77 composed of a coil body 24 in which one metal wire 24 a is wound apart on the outer periphery of the wire, and a hollow connector connected to the base end of the multilayer body 77 Provided with
- the shape of the multilayer body 77 is a stepped cylindrical hollow shape similar to the multilayer body 27 of the third embodiment, and the multilayer body 77 is a two-layer structure obtained by removing the coil body 25 and the coil body 23 from the multilayer body 27. Make a structure.
- the dilator 70 (multilayer body 77) of the present embodiment when the length of the dilator 70 (multilayer body 77) is increased and the dilator 70 (multilayer body 77) is curved, the dilator 70 (multilayer body). 77) to secure the tip flexibility, maintain the pushability and torque transmission of the dilator 70 (multilayer body 77), and when the multilayer body 77 is rotated, it is formed by the screw effect by the metal strand 24a. The hole can be easily expanded.
- the multilayer body 27 of the third embodiment has a three-layer structure
- the multilayer body 77 of the present embodiment has a two-layer structure. It is slightly inferior to 27.
- the dilator 70 (multilayer body 77) in the axial direction is configured.
- the rigidity difference can be changed, and even if the approaching path is meandering, there is an effect that the dilator 70 (multilayer body 77) can easily enter the inside.
- FIG. 13 is an overall view of a dilator according to a ninth embodiment of the present invention.
- the left side in the figure is the distal end side (distal side) to be inserted into the body
- the right side is the proximal end side (hand side, proximal side) operated by an operator such as a doctor.
- the dilator 80 includes a shaft 81, a spiral convex portion 82, and a connector 9 connected to the proximal end of the shaft 81.
- the shaft 81 has a hollow shape in which a lumen 81a penetrating from the proximal end to the distal end is formed.
- the shaft 81 has a main body portion 83, a tapered portion 84, and a tip portion 85.
- the material constituting the shaft 81 and the spiral convex portion 82 is not particularly limited as long as it ensures the flexibility of the tapered portion 84 and the tip portion 85 and has biocompatibility.
- stainless steel, nickel -It is made of a super elastic alloy material such as a titanium alloy or a synthetic resin such as a polyvinyl chloride resin, a urethane resin, a polyolefin resin, a polyamide resin, and a fluorine resin.
- the main body 83 is located on the base end side of the dilator 80, and the connector 9 is connected to the base end.
- the main body 83 has a substantially constant outer diameter from the proximal end to the distal end.
- the tapered portion 84 is connected to the distal end of the main body portion 83, extends from the distal end to the distal end side, and tapers toward the distal end side. That is, the tapered portion 84 is configured so that the outer shape on the distal end side is smaller than the outer shape on the proximal end side, and the outer diameter increases from the distal end side to the proximal end side of the shaft 81.
- the distal end portion 85 is connected to the distal end of the tapered portion 84 and extends from the distal end to the distal end side.
- the distal end portion 85 has a substantially constant outer diameter from the proximal end to the distal end.
- the shaft 81 has a hollow shape in which the outer diameter at the distal end is smaller than the outer diameter at the proximal end.
- the spiral convex portion 82 is provided on the outer peripheral surface 81B of the shaft 81 so as to protrude to the outside (the outermost surface and the outermost surface of the dilator 80).
- the spiral convex portion 82 is provided at the distal end side portion of the main body portion 83, the tapered portion 84, and the distal end portion 85, and has a gap in the adjacent portion along the axis A of the shaft 81. That is, the adjacent portions of the spiral convex portion 82 are separated from each other.
- the gap is configured to gradually decrease from the distal end side of the shaft 81 toward the proximal end side.
- the spiral convex portion 82 is integrally formed with the shaft 81 by casting or the like.
- a spiral convex portion 82 that protrudes to the outside is provided on the outer peripheral surface 81 ⁇ / b> B of the shaft 81, and the spiral convex portion 82 is adjacent to the portion along the axis A of the shaft 81.
- Has a gap With such a configuration, the dilator can be advanced not only by a pushing operation as in the prior art but also by a rotating operation by the spiral convex portion 82.
- the spiral convex portion 82 is provided in the portion where the outer diameter increases from the distal end side to the proximal end side of the shaft, that is, the tapered portion 84, the formed hole can be easily expanded in diameter. .
- the gap between the spiral convex portions 82 is configured to gradually decrease from the distal end side to the proximal end side of the shaft 81, the rigidity of the shaft 81 in the axial direction can be changed. . Thereby, even when the length of the shaft 81 is increased and the shaft 81 is curved, the flexibility of the tip of the shaft 81 can be ensured and the pushability and torque transmission performance of the shaft 81 can be maintained. .
- FIG. 14 is a partial cross-sectional view of the tip side portion of the dilator of the tenth embodiment of the present invention. Further, in FIG. 14, the left side in the figure is the distal end side (distal side) to be inserted into the body, and the right side is the proximal end side (hand side, proximal side) operated by an operator such as a doctor.
- the dilator 90 includes a shaft 91, a spiral convex portion 92, and a connector 9 (see FIG. 13) connected to the base end of the shaft 91.
- the material which comprises the shaft 91 and the helical convex part 92 is the same as the material which comprises the shaft 81 and the helical convex part 82 of the dilator 80 of 9th Embodiment.
- the shaft 91 has a hollow shape in which a lumen 91a penetrating from the proximal end to the distal end is formed.
- the shaft 91 has a main body portion 93 and a tapered portion 94.
- the dilator 90 of the present embodiment is different from the dilator 80 of the ninth embodiment in that it does not have a tip portion.
- the configurations of the main body portion 93 and the taper portion 94 are the same as the main body portion 83 and the taper portion 84 of the ninth embodiment.
- the spiral convex portion 92 is provided on the outer peripheral surface 91B of the shaft 91 so as to protrude outward (outermost surface, outermost surface of the dilator 90).
- the spiral convex portion 92 is provided in the tip end side portion of the main body portion 93 and the tapered portion 94, and has a gap in a portion adjacent along the axis A of the shaft 91. That is, the adjacent portions of the spiral convex portion 92 are separated from each other.
- the gap is configured to gradually decrease from the distal end side of the shaft 91 toward the proximal end side.
- the spiral convex portion 92 is integrally formed with the shaft 91 by casting or the like.
- the spiral convex portion 92 that protrudes to the outside is provided on the outer peripheral surface 91 ⁇ / b> B of the shaft 91, and the spiral convex portion 92 is along the axis A of the shaft 91.
- the spiral convex portion 92 is provided in a portion where the outer diameter increases from the distal end side to the proximal end side of the shaft, that is, the tapered portion 94.
- the gap between the spiral convex portions 92 is configured to gradually decrease from the distal end side of the shaft 91 toward the proximal end side. Therefore, the dilator 90 of this embodiment has the same effect as the dilator 80 of the ninth embodiment.
- FIG. 15 is a partial cross-sectional view of the tip side portion of the dilator according to the eleventh embodiment of the present invention.
- the left side in the figure is the distal end side (distal side) to be inserted into the body
- the right side is the proximal end side (hand side, proximal side) operated by an operator such as a doctor.
- the dilator 100 includes a shaft 101, a spiral convex portion 102, and a connector 9 (see FIG. 13) connected to the base end of the shaft 101.
- the material which comprises the shaft 101 and the helical convex part 102 is the same as the material which comprises the shaft 81 and the helical convex part 82 of the dilator 80 of 9th Embodiment.
- the shaft 101 has a hollow shape in which a lumen 101a penetrating from the proximal end to the distal end is formed. Further, the shaft 101 has a tapered portion 104.
- the dilator 100 of the present embodiment is different in configuration from the dilator 80 of the ninth embodiment in that it does not have a tip portion and a main body portion. That is, the shaft 101 of this embodiment has a tapered shape in which the outer diameter gradually decreases from the base end to the entire length from the tip end. Therefore, the shaft 101 has a hollow shape in which the outer diameter at the distal end is smaller than the outer diameter at the proximal end.
- the spiral convex portion 102 is provided on the outer peripheral surface 101B of the shaft 101 so as to protrude to the outside (the outermost surface and the outermost surface of the dilator 100).
- the spiral convex portion 102 is provided at the tip side portion of the taper portion 104 and has a gap in a portion adjacent to the axis A of the shaft 101. That is, the adjacent portions of the spiral convex portion 102 are separated from each other.
- the gap is configured to gradually decrease from the distal end side of the shaft 101 toward the proximal end side.
- the spiral convex portion 102 is integrally formed with the shaft 101 by casting or the like.
- the spiral convex portion 102 that protrudes to the outside is provided on the outer peripheral surface 101 ⁇ / b> B of the shaft 101, and the spiral convex portion 102 extends along the axis A of the shaft 101. There are gaps in adjacent parts.
- the spiral convex portion 102 is provided in a tapered portion 104 that is a portion whose outer diameter increases from the distal end side to the proximal end side of the shaft.
- the gap between the spiral convex portions 102 is configured to gradually decrease from the distal end side to the proximal end side of the shaft 101. Therefore, the dilator 100 of this embodiment has the same effect as the dilator 80 of the ninth embodiment.
- FIG. 16 is a partial cross-sectional view of the tip side portion of the dilator according to the eleventh embodiment of the present invention.
- the left side in the figure is the distal end side (distal side) inserted into the body, and the right side is the proximal end side (hand side, proximal side) operated by an operator such as a doctor.
- the dilator 110 includes a shaft 111, a spiral convex portion 112, and a connector 9 (see FIG. 13) connected to the proximal end of the shaft 111.
- the material which comprises the shaft 111 and the helical convex part 112 is the same as the material which comprises the shaft 81 and the helical convex part 82 of the dilator 80 of 9th Embodiment.
- the shaft 111 has a hollow shape in which a lumen 111a penetrating from the proximal end to the distal end is formed.
- the shaft 111 has a main body portion 113 and a tip portion 115.
- the main body 113 is located on the base end side of the dilator 110, and the connector 9 is connected to the base end.
- the main body 113 has a substantially constant outer diameter from the proximal end to the distal end.
- the distal end portion 115 is connected to the distal end of the main body portion 113 and extends from the distal end to the distal end side.
- the distal end portion 115 has a substantially constant outer diameter from the proximal end to the distal end.
- the outer diameter of the front end portion 115 is smaller than the outer diameter of the main body portion 113, and the front end portion 115 and the main body portion 113 are configured coaxially. Therefore, the shaft 111 has a hollow shape in which the outer diameter of the distal end is smaller than the outer diameter of the proximal end.
- the main body 113 corresponds to a portion whose outer diameter increases from the distal end side to the proximal end side of the shaft 111.
- the spiral convex portion 112 is provided on the outer peripheral surface 111B of the shaft 111 so as to protrude to the outside (the outermost surface and the outermost surface of the dilator 110).
- the spiral convex portion 112 is provided at the distal end side portion and the distal end portion 115 of the main body portion 113, and has a gap in an adjacent portion along the axis A of the shaft 111. That is, the adjacent portions of the spiral convex portion 112 are separated from each other.
- the gap is configured to gradually decrease from the distal end side to the proximal end side of the shaft 111.
- the spiral convex portion 112 is integrally formed with the shaft 111 by casting or the like.
- a spiral convex portion 112 that protrudes to the outside is provided on the outer peripheral surface 111B of the shaft 111, and the spiral convex portion 112 is formed at a portion adjacent to the axis A of the shaft 111. Has a gap.
- the helical convex part 112 is provided in the part which an outer diameter expands from the front end side of a shaft to the base end side, ie, the main-body part 113, it can expand the diameter of the formed hole easily.
- the gap between the spiral convex portions 112 is configured to gradually decrease from the distal end side to the proximal end side of the shaft 111, the rigidity of the shaft 111 on the axis A can be changed. . Thereby, even when the length of the shaft 111 is increased and the shaft 111 is curved, the flexibility of the tip end of the shaft 111 can be ensured, and the pushability and torque transmission performance of the shaft 111 can be maintained. .
- the hollow coil body 3, the hollow coil body 21, the hollow coil body 31, the hollow coil body 41, the hollow coil body 51, and the hollow coil body 61 are configured by ten strands.
- the number of strands is not limited to ten, and may be one or more.
- the coil body 22, the coil body 42, the coil body 52, and the coil body 62 are described as coil bodies composed of 16 strands.
- the number of strands is limited to 16. It may be one or more than one.
- the coil body 23 and the coil body 33 were demonstrated as a coil body comprised from 23 strands in the above-mentioned embodiment, the number of strands is not restricted to 23 pieces, or 1 or There may be multiple.
- the foremost portion 6 is formed by pouring a brazing material into the tip of the multilayer body 17, but the coil body 5 and / or the hollow coil body 3 in the vicinity of the tip of the multilayer body 17.
- the tip portion 6 having a flat surface may be formed by polishing the outer periphery of the thin film, and the same applies to the thin tip portion 66.
- the most advanced part 6 of 2nd Embodiment shall adhere to the front-end
- the tip of the multilayer body 47 of the fifth embodiment, the tip of the multilayer body 77 of the eighth embodiment, the tip of the shaft 81 of the ninth embodiment, the tip of the shaft 91 of the tenth embodiment, the tip of the tenth embodiment Even if it adheres to the tip of the shaft 101 and the tip of the shaft 111 of the eleventh embodiment, the same effects as the multilayer body 17 of the second embodiment or the multilayer body 67 of the seventh embodiment can be obtained.
- the outer periphery of 82, 92, 102, 112 may be coated with resin.
- the outer periphery of the shaft 81 and the spiral convex portion 82 of the dilator 80 of the ninth embodiment may be coated with a resin 86.
- the resin 86 can improve slipperiness and suppress biting of living tissue.
- the resin 86 When the outer periphery of the shaft 81 is coated with the resin 86, the main body portion 83, the taper portion 84, and the tip portion 85 are coated with the resin 86. This portion corresponds to the spiral convex portion 82.
- the resin 86 include biocompatible resin materials such as polyamide resin and fluororesin, and hydrophilic coating materials. The thickness is, for example, 0.1 to 300 ⁇ m.
- the spiral convex portions 82, 92, 102, and 112 gradually become smaller in the adjacent portions along the axis A as they go from the distal end side to the proximal end side of the shaft 81.
- the interval may be constant.
- the shafts 81, 91, 101, 111 and the spiral convex portions 82, 92, 102, 112 are integrally configured, they may be configured separately.
- the shaft may have various coatings on the surface (including a portion between the shaft and the spiral convex portion).
- the coating include a protective film (representative example, plating film) on the surface of the shaft, and a base film for improving the adhesion between the shaft and the spiral convex portion.
- the spiral convex portion does not constitute a blade.
- the dilator of this embodiment expands a hole formed in advance in an object (eg, a digestive tract wall such as a stomach of a patient). Therefore, if the spiral convex portion constitutes the blade, the living tissue on the inner surface of the hole is damaged.
- the spiral convex portion has an acute angle at the end portion on the radially outer side of the shaft of the cross-sectional shape (for example, the cross-sectional shape orthogonal to the spiral direction of the spiral convex portion 82 shown in FIG. 13). It is preferable not to have a part. That is, it is preferable that the said edge part has the site
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Abstract
Description
<第1実施形態>
本発明の第1実施形態について、図面を参照しつつ説明する。
図1は、本発明の第1実施形態のダイレータの全体図であり、図2は、本第1実施形態のダイレータ(多層体)の内腔を示した先端部図面であり、図3は、図1のIII-III断面図である。
また、金属素線5aは、「第2素線」に相当し、コイル体5は、「第2層体」と、「螺旋状の凸部」と、「第2コイル」とに相当する。
さらに、中空コイル体3の中間部P2は、「テーパ中空形状部」と、「外径が拡大する部分(テーパ形状)」とに相当する。また、コネクタ9は、「把持部」に相当する。
図4は、第2実施形態のダイレータ(多層体)の先端部図面である。また、図4において、図示左側が体内に挿入される先端側(遠位側)、右側が医師等の手技者によって操作される基端側(手元側、近位側)である。
図5は、第3実施形態のダイレータ(多層体)の先端部図面であり、図6は、第3実施形態のダイレータ(多層体)の内腔を示した先端部図面であり、図7は、図5のVII-VII断面図である。
図8は、第4実施形態のダイレータ(多層体)の先端部図面である。また、図8において、図示左側が体内に挿入される先端側(遠位側)、右側が医師等の手技者によって操作される基端側(手元側、近位側)である。
図9は、第5実施形態のダイレータ(多層体)の先端部図面である。
また、図9において、図示左側が体内に挿入される先端側(遠位側)、右側が医師等の手技者によって操作される基端側(手元側、近位側)である。
図10は、第6実施形態のダイレータ(多層体)の先端部図面である。
また、図10において、図示左側が体内に挿入される先端側(遠位側)、右側が医師等の手技者によって操作される基端側(手元側、近位側)である。
図11は、第7実施形態のダイレータ(多層体)の先端部図面である。
また、図11において、図示左側が体内に挿入される先端側(遠位側)、右側が医師等の手技者によって操作される基端側(手元側、近位側)である。
図12は、第8実施形態のダイレータ(多層体)の先端部図面である。
また、図12において、図示左側が体内に挿入される先端側(遠位側)、右側が医師等の手技者によって操作される基端側(手元側、近位側)である。
図13は、本発明の第9実施形態のダイレータの全体図である。
また、図13において、図示左側が体内に挿入される先端側(遠位側)、右側が医師等の手技者によって操作される基端側(手元側、近位側)である。
図14は、本発明の第10実施形態のダイレータの先端側部分の一部断面図である。
また、図14において、図示左側が体内に挿入される先端側(遠位側)、右側が医師等の手技者によって操作される基端側(手元側、近位側)である。
図15は、本発明の第11実施形態のダイレータの先端側部分の一部断面図である。
また、図15において、図示左側が体内に挿入される先端側(遠位側)、右側が医師等の手技者によって操作される基端側(手元側、近位側)である。
図16は、本発明の第11実施形態のダイレータの先端側部分の一部断面図である。
また、図16において、図示左側が体内に挿入される先端側(遠位側)、右側が医師等の手技者によって操作される基端側(手元側、近位側)である。
3、21、31、41、51、61 中空コイル体
5、22、23、24、25、32、33、35、42、43、44、52、53、62、63 コイル体
6、66 最先端部
7、17、27、37、47、57、67、77 多層体
8、28 内腔
9 コネクタ
81、91、101、111 シャフト
5、24、25、32、35、43、44、53、63、82、92、102、112 螺旋状の凸部
P1 先端部
P2 中間部
P3 基端部
Claims (18)
- 先端の外径が基端の外径よりも小さい中空形状のシャフトと、前記シャフトの基端に接続された把持部とを有するダイレータであって、
前記シャフトの外周面に、外部に突出する螺旋状の凸部が設けられ、
前記螺旋状の凸部は、前記シャフトの軸に沿って隣り合う部分に隙間を有するダイレータ。 - 前記螺旋状の凸部は、前記シャフトの先端側から基端側にかけて外径が拡大する部分に設けられている請求項1に記載のダイレータ。
- 前記外径が拡大する部分は、前記シャフトの先端側の外径が基端側の外径よりも小さいテーパ形状である請求項2に記載のダイレータ。
- 前記螺旋状の凸部の隙間が、前記シャフトの先端側から基端側にいくにつれて徐々に小さくなる請求項1から請求項3のいずれか一項に記載のダイレータ。
- 前記シャフトが、1本又は複数本の素線を中空形状に巻き回した第1コイルからなる請求項1から請求項4のいずれか一項に記載のダイレータ。
- 前記螺旋状の凸部が、1本又は複数本の素線を前記シャフトの外周面に巻き回した第2コイルからなる請求項1から請求項5のいずれか一項に記載のダイレータ。
- 第2コイルは、1本の素線を前記シャフトの外周面に巻き回して形成している請求項6に記載のダイレータ。
- 第2コイルの素線は、前記シャフトの前記基端側において前記軸に沿ってで密着して巻回されており、前記シャフトの前記テーパ形状の部分を含む先端側において前記軸に沿って離間して巻回されている請求項6また請求項7に記載のダイレータ。
- 前記シャフトが、1本又は複数本の素線を中空形状に巻き回した第1コイルからなり、前記螺旋状の突部が、1本又は複数本の素線を前記シャフトの外周面に巻き回した第2コイルからなり、
前記第1コイル及び前記第2コイルの各素線が互いに反対向きに巻き回されている請求項1から請求項5のいずれか一項に記載のダイレータ。 - 前記シャフトが、複数の第1素線を、先端に向って細くなるテーパ中空形状に巻回した第1層体から構成され、
前記螺旋状の突部が、前記第1層体の表面に、1本の第2素線が前記第1層体とは反対向きに巻回された第2層体から構成され、
前記第1積層体と第2積層体からなる多層体において、
前記第2素線は、基端側において密着して巻回されており、テーパ中空形状部を含む先端側において離間して巻回されている請求項1に記載のダイレータ。 - 前記第2素線の離間量は、前記テーパ中空形状部基端側の円筒部において徐々に減少している請求項10に記載のダイレータ。
- 前記シャフトが、複数の第3素線を中空形状に巻回した第3層体と、その第3層体の先端から基端側に離間して、前記第3層体の外周に複数の第4素線を巻回した第4層体とから構成され、
前記螺旋状の突部が、前記第4層体の先端の先端側に、前記第3層体の外周に1本の第5素線を離間させて巻回した第5層体からなる請求項1に記載のダイレータ。 - 前記第4層体の先端から基端側に離間して、前記第4層体の外周に複数の第6素線を巻回した第6層体を備え、
前記第6層体の先端の先端側には、前記第4層体の外周に1本の第7素線を離間させて前記第5層体と同一方向に巻回した第7層体と
を備えた請求項12に記載のダイレータ。 - 前記第5層体は、前記第4層体と一体的に形成されている請求項12または請求項13に記載のダイレータ。
- 前記第7層体は、前記第6層体と一体的に形成されている請求項13または請求項14に記載のダイレータ。
- 前記第6層体は、前記第7層体と一体的に形成されている請求項13または請求項15に記載のダイレータ。
- 前記第6層体及び前記第7層体の離間量は、基端側に向って徐々に減少している請求項16に記載のダイレータ。
- 先端の外表面は、平坦状に形成されていることを特徴とする請求項1から請求項17のいずれか一項に記載のダイレータ。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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JP2018530811A JP6445745B1 (ja) | 2017-03-24 | 2018-03-23 | ダイレータ |
EP18772596.5A EP3603551A4 (en) | 2017-03-24 | 2018-03-23 | DILATOR |
CN201880005761.2A CN110139616B (zh) | 2017-03-24 | 2018-03-23 | 扩张器 |
KR1020197021623A KR102299776B1 (ko) | 2017-03-24 | 2018-03-23 | 다일레이터 |
US16/579,946 US11389631B2 (en) | 2017-03-24 | 2019-09-24 | Dilator |
US17/830,621 US11819647B2 (en) | 2017-03-24 | 2022-06-02 | Dilator |
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JP2017012024 | 2017-03-24 |
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US16/579,946 Continuation US11389631B2 (en) | 2017-03-24 | 2019-09-24 | Dilator |
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PCT/JP2018/011671 WO2018174240A1 (ja) | 2017-03-24 | 2018-03-23 | ダイレータ |
PCT/JP2018/011674 WO2018174243A1 (ja) | 2017-03-24 | 2018-03-23 | ダイレータ |
PCT/JP2018/035088 WO2019181011A1 (ja) | 2017-03-24 | 2018-09-21 | ダイレータ |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20210393923A1 (en) * | 2020-06-22 | 2021-12-23 | Medtronic, Inc. | Balloon catheter |
WO2022049688A1 (ja) * | 2020-09-03 | 2022-03-10 | 朝日インテック株式会社 | ダイレータ |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018174242A1 (ja) | 2017-03-24 | 2018-09-27 | 朝日インテック株式会社 | ダイレータ |
WO2019215827A1 (ja) * | 2018-05-09 | 2019-11-14 | 朝日インテック株式会社 | 医療用チューブ |
JP7457579B2 (ja) | 2020-06-01 | 2024-03-28 | 朝日インテック株式会社 | ダイレータ |
WO2021255906A1 (ja) * | 2020-06-18 | 2021-12-23 | 朝日インテック株式会社 | サポートデバイス |
CN111743619A (zh) * | 2020-08-06 | 2020-10-09 | 北京大学第三医院(北京大学第三临床医学院) | 一种扩张切开装置 |
WO2023112192A1 (ja) * | 2021-12-15 | 2023-06-22 | 朝日インテック株式会社 | ダイレータ |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002177289A (ja) * | 2000-11-03 | 2002-06-25 | Willy Ruesch Gmbh | 気管切開用拡張器 |
JP2007098120A (ja) * | 2005-09-06 | 2007-04-19 | Fmd:Kk | 医療用処置具及びその回転操作装置並びに医療用処置装置 |
JP2008011867A (ja) | 2006-05-25 | 2008-01-24 | Nippon Zeon Co Ltd | ダイレーター、ダイレーターの製造方法、およびシースイントロデューサー |
US20140046357A1 (en) * | 2012-08-09 | 2014-02-13 | Cook Medical Technologies Llc | Dilation device |
JP2016013285A (ja) * | 2014-07-02 | 2016-01-28 | 朝日インテック株式会社 | 医療用チューブ体 |
Family Cites Families (69)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US207932A (en) * | 1878-09-10 | Improvement in surgical dilators | ||
JPS60234671A (ja) | 1984-05-09 | 1985-11-21 | テルモ株式会社 | カテ−テル導入具 |
DE3532653C2 (de) * | 1985-09-13 | 1993-10-21 | Martin Kaltenbach | Dilatationskatheter |
DK163713C (da) | 1987-09-02 | 1992-09-07 | Ole Gyring Nieben | Anordning til anbringelse af et partielt kateter i et legemshulrum |
WO1991007202A1 (en) * | 1989-11-16 | 1991-05-30 | Kensey Nash Corporation | A percutaneous transtracheal airway device and procedure |
US5211636A (en) * | 1990-10-31 | 1993-05-18 | Lake Region Manufacturing Co., Inc. | Steerable infusion guide wire |
DE69124395T2 (de) | 1990-11-09 | 1997-08-28 | Boston Scientific Corp., Watertown, Mass. | Führungsdraht zum durchqueren von okklusionen in blutgefässen |
JP2502565Y2 (ja) * | 1990-12-18 | 1996-06-26 | 株式会社パイオラックス | 医療用ガイドワイヤ |
US5409470A (en) * | 1993-05-07 | 1995-04-25 | C. R. Bard, Inc. | Dilatation catheter and guidewire with threaded tip connection |
US5630813A (en) * | 1994-12-08 | 1997-05-20 | Kieturakis; Maciej J. | Electro-cauterizing dissector and method for facilitating breast implant procedure |
US20030069522A1 (en) * | 1995-12-07 | 2003-04-10 | Jacobsen Stephen J. | Slotted medical device |
DE19636318A1 (de) * | 1996-08-29 | 1998-03-05 | Knigge Ursel | Obturator |
JP4015298B2 (ja) | 1998-07-31 | 2007-11-28 | 三洲電線株式会社 | 多層中空圧縮撚線の製造方法 |
JP3858560B2 (ja) * | 2000-03-31 | 2006-12-13 | フジノン株式会社 | コイルシャフトの製造方法 |
US9192410B2 (en) | 2001-03-14 | 2015-11-24 | Covidien Lp | Trocar device |
WO2003043685A2 (en) * | 2001-11-19 | 2003-05-30 | Cardiovascular Systems, Inc | High torque, low profile intravascular guidewire system |
US20050165405A1 (en) * | 2001-11-30 | 2005-07-28 | Tsou Paul M. | Minimal access apparatus for endoscopic spinal surgery |
JP2004009844A (ja) | 2002-06-05 | 2004-01-15 | Shuji Tarumoto | ギヤードケーブル |
CN101919722A (zh) * | 2002-07-31 | 2010-12-22 | 微温森公司 | 三部件同轴的血管闭塞装置 |
US6887194B2 (en) * | 2003-01-17 | 2005-05-03 | Applied Medical Resources Corporation | Surgical access apparatus and method |
US7073374B2 (en) | 2003-07-30 | 2006-07-11 | Bbnt Solutions Llc | Soil compaction measurement on moving platform |
US7811303B2 (en) * | 2003-08-26 | 2010-10-12 | Medicine Lodge Inc | Bodily tissue dilation systems and methods |
JP2005118102A (ja) | 2003-10-14 | 2005-05-12 | Pentax Corp | 内視鏡用スネア |
JP4497454B2 (ja) * | 2004-04-06 | 2010-07-07 | 朝日インテック株式会社 | 医療用具 |
JP2006130073A (ja) * | 2004-11-05 | 2006-05-25 | Olympus Corp | 超音波トロッカー |
JP4804780B2 (ja) * | 2005-03-28 | 2011-11-02 | テルモ株式会社 | 生体器官拡張器具 |
US8414477B2 (en) * | 2005-05-04 | 2013-04-09 | Olympus Endo Technology America Inc. | Rotate-to-advance catheterization system |
US20070088230A1 (en) * | 2005-09-06 | 2007-04-19 | Fmd Co., Ltd | Medical instrument and medical equipment for treatment, and rotational handle device |
US8500628B2 (en) * | 2006-02-28 | 2013-08-06 | Olympus Endo Technology America, Inc. | Rotate-to-advance catheterization system |
US20090281500A1 (en) * | 2006-04-19 | 2009-11-12 | Acosta Pablo G | Devices, system and methods for minimally invasive abdominal surgical procedures |
US8419658B2 (en) * | 2006-09-06 | 2013-04-16 | Boston Scientific Scimed, Inc. | Medical device including structure for crossing an occlusion in a vessel |
US8043343B2 (en) * | 2007-06-28 | 2011-10-25 | Zimmer Spine, Inc. | Stabilization system and method |
US9597172B2 (en) | 2007-09-28 | 2017-03-21 | W. L. Gore & Associates, Inc. | Retrieval catheter |
US8795326B2 (en) * | 2007-10-05 | 2014-08-05 | Covidien Lp | Expanding seal anchor for single incision surgery |
US8900193B2 (en) * | 2008-12-31 | 2014-12-02 | St. Jude Medical, Atrial Fibrillation Division, Inc. | Fast-acting or rotating transseptal needle |
US8764727B2 (en) * | 2009-03-06 | 2014-07-01 | Cook Medical Technologies Llc | Reinforced rapid exchange catheter |
US8343035B2 (en) * | 2009-04-20 | 2013-01-01 | Spine View, Inc. | Dilator with direct visualization |
US20110082338A1 (en) * | 2009-10-01 | 2011-04-07 | Tyco Healthcare Group Lp | Port fixation with varying thread pitch |
US9339599B2 (en) * | 2009-12-21 | 2016-05-17 | Sorin Group Usa, Inc. | Self-dilating cannula |
WO2011115738A2 (en) * | 2010-03-17 | 2011-09-22 | Dean Lin | System and method for pedicle screw placement in vertebral alignment |
US20120116350A1 (en) * | 2010-07-07 | 2012-05-10 | Reverse Medical Corporation | Translation dilator and stand alone vascular guide catheter |
JP2012095812A (ja) * | 2010-11-01 | 2012-05-24 | Olympus Corp | 医療用デバイス |
JP5736735B2 (ja) * | 2010-11-09 | 2015-06-17 | 住友ベークライト株式会社 | カテーテル |
JP5448200B2 (ja) | 2011-03-01 | 2014-03-19 | 朝日インテック株式会社 | ガイドワイヤ |
JP5582612B2 (ja) | 2011-03-03 | 2014-09-03 | 朝日インテック株式会社 | 体内回収機構用ロープ |
JP5424499B2 (ja) * | 2011-04-18 | 2014-02-26 | 朝日インテック株式会社 | 医療用ガイドワイヤ |
JP5392792B2 (ja) * | 2011-06-06 | 2014-01-22 | 朝日インテック株式会社 | ガイドワイヤ |
EP2740510B1 (en) * | 2011-08-01 | 2017-11-01 | Terumo Kabushiki Kaisha | Dilator |
CN103717254B (zh) * | 2011-08-01 | 2016-03-23 | 泰尔茂株式会社 | 扩张器、插管器组装体及医疗器具 |
BR112014007495A2 (pt) * | 2011-09-30 | 2017-04-04 | Bioventrix Inc | hemostase pericardial remota para acesso ventricu-lar e reconstrução ou terapias de outros órgãos |
JP6101206B2 (ja) * | 2011-10-31 | 2017-03-22 | 鈴木 裕 | 医療用拡張器および医療用拡張器セット |
US9107693B2 (en) | 2012-04-16 | 2015-08-18 | Pacesetter, Inc. | Apparatus and method for pericardial access |
JP5652884B2 (ja) * | 2012-07-27 | 2015-01-14 | 朝日インテック株式会社 | ガイドワイヤ |
JP6066477B2 (ja) * | 2013-01-17 | 2017-01-25 | 日本ライフライン株式会社 | 医療用ガイドワイヤ |
EP2980466B1 (en) | 2013-03-27 | 2019-01-09 | FUJIFILM Corporation | Flexible tube for endoscopes and method for producing same |
JP5991951B2 (ja) | 2013-07-12 | 2016-09-14 | 富士フイルム株式会社 | 内視鏡用可撓管および内視鏡型医療機器 |
JP5816775B2 (ja) * | 2013-06-26 | 2015-11-18 | オリンパス株式会社 | スパイラルユニット、挿入装置、及びスパイラルユニットの製造方法 |
EP2842594A1 (en) * | 2013-09-03 | 2015-03-04 | Coloplast A/S | Access sheath |
US9408631B2 (en) | 2013-09-27 | 2016-08-09 | Depuy Mitek, Llc | Flexible cannula and obturator |
JP6474896B2 (ja) | 2014-08-01 | 2019-02-27 | ヴァドヴェイションズ,インコーポレイテッド | 組織壁に開口を画定するコアリング拡張器 |
JP5874885B1 (ja) * | 2015-02-24 | 2016-03-02 | 株式会社エフエムディ | 医療用ガイドワイヤ |
US20160287849A1 (en) | 2015-03-31 | 2016-10-06 | Boston Scientific Scimed, Inc. | Vibrating self-dilation bougie |
JP6540956B2 (ja) | 2015-09-08 | 2019-07-10 | 日本ゼオン株式会社 | 超音波内視鏡用ダイレータ |
CN205322443U (zh) * | 2015-12-04 | 2016-06-22 | 浙江申达斯奥医疗器械有限公司 | 一种微创胸腔手术的穿刺器 |
EP3184237B1 (en) | 2015-12-22 | 2020-05-27 | Sandvik Intellectual Property AB | Sensor module and tool holder for a cutting tool |
EP3445420A4 (en) | 2016-04-18 | 2019-12-18 | QXMedical, LLC | CATHETER FOR PROGRESSING THROUGH VASCULAR STENOSIS AND RELATED METHODS |
WO2018174242A1 (ja) * | 2017-03-24 | 2018-09-27 | 朝日インテック株式会社 | ダイレータ |
WO2018180209A1 (ja) | 2017-03-28 | 2018-10-04 | テルモ株式会社 | 医療用デバイス |
JP6868319B2 (ja) | 2017-10-25 | 2021-05-12 | 朝日インテック株式会社 | カテーテル |
-
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- 2018-03-23 WO PCT/JP2018/011673 patent/WO2018174242A1/ja unknown
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-
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- 2022-06-02 US US17/830,621 patent/US11819647B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002177289A (ja) * | 2000-11-03 | 2002-06-25 | Willy Ruesch Gmbh | 気管切開用拡張器 |
JP2007098120A (ja) * | 2005-09-06 | 2007-04-19 | Fmd:Kk | 医療用処置具及びその回転操作装置並びに医療用処置装置 |
JP2008011867A (ja) | 2006-05-25 | 2008-01-24 | Nippon Zeon Co Ltd | ダイレーター、ダイレーターの製造方法、およびシースイントロデューサー |
US20140046357A1 (en) * | 2012-08-09 | 2014-02-13 | Cook Medical Technologies Llc | Dilation device |
JP2016013285A (ja) * | 2014-07-02 | 2016-01-28 | 朝日インテック株式会社 | 医療用チューブ体 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20210393923A1 (en) * | 2020-06-22 | 2021-12-23 | Medtronic, Inc. | Balloon catheter |
US11471651B2 (en) * | 2020-06-22 | 2022-10-18 | Medtronic, Inc. | Balloon catheter including a guidewire tube with a friction-increasing outer coating |
WO2022049688A1 (ja) * | 2020-09-03 | 2022-03-10 | 朝日インテック株式会社 | ダイレータ |
JPWO2022049688A1 (ja) * | 2020-09-03 | 2022-03-10 | ||
JP7368632B2 (ja) | 2020-09-03 | 2023-10-24 | 朝日インテック株式会社 | ダイレータ |
EP4209187A4 (en) * | 2020-09-03 | 2024-05-29 | Asahi Intecc Co., Ltd. | DILATOR |
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