US20060014418A1 - Wire-stranded hollow coil body, a medical equipment made from the same - Google Patents

Wire-stranded hollow coil body, a medical equipment made from the same Download PDF

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US20060014418A1
US20060014418A1 US11/202,036 US20203605A US2006014418A1 US 20060014418 A1 US20060014418 A1 US 20060014418A1 US 20203605 A US20203605 A US 20203605A US 2006014418 A1 US2006014418 A1 US 2006014418A1
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wire
stranded
coil body
hollow coil
stranded hollow
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Abandoned
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US11/202,036
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Tomihisa Kato
Kenji Miyata
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Tomihisa Kato
Kenji Miyata
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Priority to JP2002358851A priority Critical patent/JP4098613B2/en
Priority to JP2002-358851 priority
Priority to US10/611,664 priority patent/US7117703B2/en
Application filed by Tomihisa Kato, Kenji Miyata filed Critical Tomihisa Kato
Priority to US11/202,036 priority patent/US20060014418A1/en
Publication of US20060014418A1 publication Critical patent/US20060014418A1/en
Application status is Abandoned legal-status Critical

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00064Constructional details of the endoscope body
    • A61B1/00071Insertion part of the endoscope body
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/005Flexible endoscopes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/41Detecting, measuring or recording for evaluating the immune or lymphatic systems
    • A61B5/414Evaluating particular organs or parts of the immune or lymphatic systems
    • A61B5/417Evaluating particular organs or parts of the immune or lymphatic systems the bone marrow
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/68Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6846Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
    • A61B5/6847Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive mounted on an invasive device
    • A61B5/6851Guide wires
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M25/00Catheters; Hollow probes
    • A61M25/01Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/09Guide wires
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B1/00Constructional features of ropes or cables
    • D07B1/12Ropes or cables with a hollow core
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B3/00General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B5/00Making ropes or cables from special materials or of particular form
    • D07B5/005Making ropes or cables from special materials or of particular form characterised by their outer shape or surface properties
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M25/00Catheters; Hollow probes
    • A61M25/01Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/09Guide wires
    • A61M2025/09108Methods for making a guide wire
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M25/00Catheters; Hollow probes
    • A61M25/01Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/09Guide wires
    • A61M2025/09191Guide wires made of twisted wires
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B2201/00Ropes or cables
    • D07B2201/20Rope or cable components
    • D07B2201/2015Strands
    • D07B2201/2021Strands characterised by their longitudinal shape
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B2207/00Rope or cable making machines
    • D07B2207/40Machine components
    • D07B2207/404Heat treating devices; Corresponding methods
    • D07B2207/4063Heat treating devices; Corresponding methods for stress relief
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B2207/00Rope or cable making machines
    • D07B2207/40Machine components
    • D07B2207/4072Means for mechanically reducing serpentining or mechanically killing of rope

Abstract

A wire-stranded hollow coil body (1) has a multitude of coil line elements (2) stranded along a predetermined circular line to form a flexible wire tube having a central axial hollow portion (3), the flexible wire tube is stranded under a strand-turn resistant load and heat treated to remove a residual stress upon formation so as to provide a high rotation-following capability and a high straightness.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The invention relates to a wire-stranded hollow coil body used as a main wire component of a medical equipment in the form of flexible line wire such as a catheter, catheter guide wire, endscope treating tool or the like, and more particularly concerns to a medical equipment produced from the wire-stranded hollow coil body.
  • 2. Description of Related Art
  • In a catheter and a catheter guide wire which introduce a leading distal end into a diseased area through a twisted and turned vascular system, a leading distal end of the catheter or the catheter guide wire is inserted into the blood vessel or the somatic cavity by a “push-pull and turn” manipulation at a hand access portion located ouside a subject patient upon treating the diseased area. In an endscope treating tool which is inserted through a somatic cavity to reach the diseased area, a leading end of the endscope treating tool is manipulated in the same manner as mentioned above.
  • In order to achieve a smooth manipulation when inserting the leading distal end into the somatic cavity and the blood vessel, it is required for these medical devices to have multi-mechanical properties. The multi-mechanical properties includes a high flexibility, a good straightness in free state and a good restitutivity against bending deformation. The medical devices of this type are required at its leading distal end portion to have a high flexibility, while at the same time, being required at its rear portion to have an appropriate rigidity as a functionally gradient property. It is also indispensable for the leading distal end to have a high maneuverability in which the leading distal end properly responds to the hand operation which is to be done outside the subject patient.
  • The following related art flexible linear wires used as a main component of the medical devices have been produced to achieve the above indispensable multi-mechanical properties.
  • In the references of Laid-open Japanese Patent Application Nos. 2002-275774 and 4-309371 (referred in turn to as “first and second reference” hereinafter), a wire-stranded hollow coil body is disclosed which have a multitude of coil line elements stranded along a predetermined circular line to form a rope-like flexible linear tube having a central axial hollow portion. In the domestic publication of Japanese Patent Application No. 2000-512691 (referred to as “third reference” hereinafter), a solid thin wire made from an elastic shape-memory alloy is stranded under a tensile load. The solid thin wire thus stranded is subjected to a stress-removing heat-treatment procedure under the condition of approx. 280° C.×30 min.−300° C.×30 min. so as to provide a flexible solid wire body used for medical devices.
  • The reference of Laid-open Japanese Patent Application No. 10-165361 (referred to as “fourth reference” hereinafter) discloses a helical hollow pipe to produce a sheath from an elongated hollow thin wire used for an endscope treating tool. An outer surface of the helical hollow pipe is partly ground to form a diameter-reduced portion, or partly replaced by a thin wire to provide a good bending capability with the sheath.
  • The reference of Laid-open Japanese Patent Application No. 11-104071 (referred to as “fifth reference” hereinafter) discloses a flexible wire sheath made from a multi-wound helical coil body used for an endscope treating tool. Into the flexible wire sheath, a manipulation wire is inserted so as to be rotatable with a biopsy end portion in unison.
  • The reference of Laid-open Japanese Patent Application No. 11-33004 (referred to as “sixth reference” hereinafter) discloses a pressure-sensor type guide wire in which a guide wire sensor portion is made from a stainless steel cloak tube having a platinum helical wire tube and a stainless steel helical wire tube concentrically placed to enclose a piezoelectric elongation plate. The reference of Laid-open Japanese Patent Application No. 7-213481 (referred to as “seventh reference” hereinafter) discloses a flexible endscope in which a manipulation wire is placed within a cloak tube having four flexible helical wires juxtaposed, each of which is wound to have a different helical pitch. The reference of Laid-open Japanese Patent Application No. 10-290803 (referred to as “eighth reference” hereinafter) discloses an endscope treating tool in which a flexible wire coil sheath constitutes a main structure.
  • In the catheter, the catheter guide wire and the endscope tube made from the wire-stranded hollow coil body disclosed by the first and second references, the wire-stranded hollow structure makes it possible to present a good flexibility based on the wire-stranded body construction per se. The wire-stranded hollow structure advantageously reduces a torsion-resistant moment upon manipulation, while at the same time, reducing a weight dimension per unit length. However, in contrast to the above advantages, the preceding references has the following drawbacks.
  • Namely, both the references lack a lengthwise linearity and a rotation-following capability responsive to the manipulation of the leading distal end, and have no gradient flexibility in which the wire-stranded body gradually shifts its property in the lengthwise direction while substantially maintaining uniform torsion-resistant and flexible properties among the multi-mechanical properties. The flexible solid wire body disclosed by the third reference is made from the solid thin wire deviod of the central hollow portion, this increases a torsional resistance, and adding the weight dimension per unit length too much to put the flexible solid wire body into practical use for the medical devices.
  • The wire-stranded hollow coil structure disclosed by the fourth to sixth references is unsatisfactory from the point of the indispensable requirement to function as a main linear body for the medical devices because both the references lack the lengthwise linearity and the rotation-following capability while maintaining the uniform torsion-resistant property and flexible property, as is the case with the first and second references.
  • Therefore, it is an object of the invention to overcome the above drawbacks so as to provide a wire-stranded hollow body, a medical equipment formed therefrom and a method of making the same in which the medical equipment having the flexible line wire as a main wire component is remarkably improved at its performance.
  • SUMMARY OF THE INVENTION
  • According to the present invention, there is provided a wire-stranded hollow coil body including a multitude of coil line elements stranded along a predetermined circular line to form a flexible linear tube having a central axial hollow portion, whereby the flexible linear tube is stranded under a strand-turn resistant load and heat treated to remove a residual stress upon formation so as to provide a high rotation-following capability and a high straightness. Medical equipments such as a medical endscope, an endscope treating tool and a pressure sensor type medical guide wire are constructed with the wire-stranded hollow coil body a main wire component.
  • In order to further improve the performance depending on its application and usage, the wire-stranded hollow coil body constructed as follows:
  • The lengthwisely divided sections of the primary forming flexible linear tube are constructed to have different degree of stranding turns and the residual stresses removed in different degrees, the outer surface of the group of the stranded coil line elements is ground in a manner to be diametrically reduced in concentrical relationship with the wire-stranded hollow coil body. Alternatively, the coil line elements are specified by an austenitic stainless steel, the outer surface of the flexible linear tube is electrolytically polished; the flexible linear tube is in some turns unwound reversely after stranded.
  • The wire-stranded hollow coil body is such that it is stranded under the torsion-resistant load (tensile load in the lengthwise direction), and heat treated to remove the residual stress so as to provide the high rotation-following capability and high straightness. A good manipulation response is obtained at the flexible hollow line wire of the medical equipment upon push-pull manipulating the hand access portion to insert the leading distal end portion into the vascular system or the somatic cavity for an appropriate treatment. The structure enables a manipulator to a good straightness felt before and after inserting into the vascular system or the somatic cavity, and representing a lightweight structure due to the wire-stranded hollow configuration while ensuring a high twisting capability due to a reduced bending rigidity to produce a high quality line wire tube.
  • Upon stranding the group of the coil line elements, the flexible linear tube generally generates rolls or swells transmitting in the lengthwise direction due to a contractile stress produced between the neighboring coil line elements tightly arranged and due to a tensile and shearing stress appeared between the coil line elements. In contrast to the above situation, the hollow wire coil configuration according to the invention is stranded under the torsion-resistant load, and heat treated to remove the residual stress. This obviates a chance to occur the detrimental roll or swell phenomenon produced due to the complicated stresses combined, thus providing the wire-stranded hollow configuration with a good straightness. This also achieves a good rotation-following capability in which the leading distal end staunchly follows the rotational manipulation of the hand access portion. The related art wire-stranded hollow coil body disclosed by the first and second references intermittently generates “strand stuck portions”, a part of which is rapidly released with an excessive times of turning operation so as to roll in the stick slip manner. This produces a zigzag curve represented by broken lines in Table 1 which indicates that the rotational manipulation of the hand access portion at an angle (θ2) results in twisting the leading distal end by an angle (θ1). On the contrary, the wire-stranded hollow coil body according to the invnetion is stranded under the torsion-resistant load to eliminate the unfavorable “strand stuck portions” so as to present the high rotation-following capability and high straightness as shown by a linear relationship represented by the solid line in Table 1.
    Figure US20060014418A1-20060119-P00001
  • The wire-stranded hollow coil body according to the invention serves as a main wire component of a high quality medical device in which the wire-stranded hollow coil body is equipped with a high rotation-following capability and a high straightness.
  • With the former method of making the wire-stranded hollow coil body, it is possible to mass produce the wire-stranded hollow coil body efficiently with a relatively low cost. With the latter method of making the wire-stranded hollow coil body, it is possible to produce the lengthwisely divided sections of the primary forming flexible linear tube to have different strand turns and residual stresses removed in different degrees. This leads to efficiently mass producing the fuctionally gradient type wire-stranded hollow coil body which has a high flexibility at the leading distal end portion, a moderate flexibility at the halfway middle portion and a high rigidity at the rear end portion.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • A preferred form of the present invention is illustrated in the accompanying drawings in which:
  • FIG. 1 is an exploded plan view of a wire-stranded hollow coil body according to a first embodiment of the invention;
  • FIG. 2 is a latitudinal cross sectional view taken along the line II-II of FIG. 1;
  • FIG. 3 is a plan view of a medical guide wire into which the wire-stranded hollow coil body is incorporated but partly sectioned;
  • FIG. 4 is an explanatory view showing how the wire-stranded hollow coil body is manufactured;
  • FIG. 5 is a latitudinal cross sectional view taken along the line V-V of FIG. 4;
  • FIG. 6 is a plan view of a wire-stranded hollow coil body according to a second embodiment of the invention;
  • FIG. 7 is an explanatory view showing how the wire-stranded hollow coil body is manufactured;
  • FIG. 8 is a perspective view of a clamp portion;
  • FIG. 9 is a characteristic curve of the wire-stranded hollow coil body;
  • FIG. 10 is a wire-stranded hollow coil body according to a third embodiment of the invention;
  • FIG. 11 is an explanatory view showing how the wire-stranded hollow coil body is manufactured;
  • FIG. 12 is a characteristic curve of the wire-stranded hollow coil body;
  • FIG. 13 is a latitudinal cross sectional view taken along the line XIII-XIII of FIG. 16 according to a fourth embodiment of the invention;
  • FIG. 14 is a latitudinal cross sectional view taken along the line XIV-XIV of FIG. 16;
  • FIG. 15 is a latitudinal cross sectional view taken along the line XV-XV of FIG. 16;
  • FIG. 16 is a plan view of a wire-stranded hollow coil body;
  • FIG. 17 is a plan view of a modified wire-stranded hollow coil body;
  • FIG. 18 is a plan view of a flexible endscope;
  • FIG. 19 is a latitudinal cross sectional view taken along the line XIX-XIX of FIG. 18;
  • FIG. 20 is an explanatory view of a related art flexible endscope shown for comparison;
  • FIG. 21 is an explanatory view of the flexible endscope;
  • FIG. 22 is another explanatory view of the flexible endscope shown how a cloak tube stretches when subjected to a bending deformation;
  • FIG. 23 is a graphical representation showing a relationship between a total bending angle (θ) and an extension length (L);
  • FIG. 24 is a plan view of a related art cloak tube but partly sectioned;
  • FIG. 25 is a plan view of a cloak tube but partly sectioned;
  • FIG. 26 is a plan view of a endscope treating tool but partly sectioned;
  • FIG. 27 is a plan view of another endscope treating tool but partly sectioned;
  • FIG. 28 is a plan view of a related art multi-wound coil sheath;
  • FIG. 29 is a plan view of a pressure sensor type guide wire; and
  • FIG. 30 is an explanatory view of the pressure sensor type guide wire.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • Referring to FIGS. 1 through 5, with the use of a first method of making a wire-stranded hollow coil body 1, the wire-stranded hollow coil body 1 according to a first embodiment of the invention is described. In order to use an elongated thin flexible wire to a medical guide wire, a multitude of austenitic stainless steel coil line elements 2 are stranded along a predetermined circular line to form a flexible linear tube, a space of which serves as a central axial hollow portion 3. An entire length (Lt) of the flexible linear tube measures approx. 1.000-1.500 mm.
  • The group of the coil line elements 2 is stranded under a strand-turn resistant load (torsion-resistant load) and heat treated to remove a residual stress appeared during the stranding and drawing operation. The wire-stranded hollow coil body 1 thus formed is provided with a high straightness having a straight configuration in free state devoid of the unfavorable roll or swell phenomenon. The wire-stranded hollow coil body 1 is further provided with a high rotation-following capability in which the rotation of the thin flexible wire at one end is soomthly and efficiently transmitted to the other end of the thin flexible wire when one end of the thin flexible wire is rotated around the axial hollow portion 3.
  • The wire-stranded hollow coil body 1 is formed in accordance with the following first method (see FIG. 4). Namely, with the use of an ordinary wire rope stranding machine, a primary forming flexible linear tube R (referred simply to as “primary approximation R”) is formed as a normal wire rope structure having a predetermined length. One end of the primary approximation R is set at a rotationally active chuck 11 of a stranding machine 10. The other end of the primary approximation R is arranged to be slidable along its lengthwise direction, and clamped by a slide type fixture chuck 12 loaded with a static weight W. The torsion-resistant load under the tensile stress W is added to the primary approximation R set between the rotationally active chuck 11 and the slide type fixture chuck 12. Then, a conductor line 15 extended from an electric power generator 14 is connected between the rotationally active chuck 11 and the slide type fixture chuck 12, so as to apply an electric current to the primary approximation R to prepare for heat treatment of the primary approximation R.
  • The primary approximation R set under the torsion-resistant load and the heat treatment is turned 300 times in the stranding direction and unwound 100 times in the reverse direction (stranded 200 (300-100) times resultantly) as shown at (A) in Table 2. At the time of stranding the primary approximation R or after stranded the primary approximation R, the primary approximation R is heat treated due to its own electric resistor energized. After heat treating the primary approximation R, an elongated core 4 is withdrawn from the primary approximation R to provide the axial hollow portion 3 so as to produce the wire-stranded hollow coil body 1.
  • A stainless steel or nickel-titanium alloy core 5 are placed in the axial hollow portion 3 as a flexible wire component needed to form the guide wire. To a front distal end of the wire-stranded hollow coil body 1, a single wound helical coil 9 is connected which is made from a radiopaque material to implement the fluorography while ensuring a high flexibility at the leading distal end of the wire-stranded hollow coil body 1 so as to provide a guide wire body of excellent quality. To the front distal end of the guide wire body, the core 5 is thermally bonded by a solder mass to substantially shape a semi-spherical bulge portion 6. To a rear distal end of the guide wire body, the core 5 is thermally bonded by a plasma welding to substantially shape the same semi-spherical bulge portion 6. An outer surface of the guide wire body is ground by an electrolytic polishing (well-known means including whetstone grinding), the electrolytically polished surface is coated with a hydrophilic polymer film C applied thereon to provide a medical guide wire. By way of illustration, a dimensional design of the wire-stranded hollow coil body 1 are shown in Table 2.
    TABLE 2
    A B
    dimension 18 coil line elements 8 coil line elements
    stranded stranded
    (line diameter: 0.55 mm) (line diameter: 0.22 mm)
    entire length: 4.500 mm entire length: 4.500 mm
    outer diameter of coil: outer diameter of coil:
    0.415 mm 0.865 mm
    inner diameter of coil: inner diameter of coil:
    0.305 mm 0.425 mm
    stranded stranded 300 times but stranded 350 times but
    times unwound 100 times unwound 120 times
    resistance 2.8 Amp × 60 sec 6.0 Amp × 60 sec
    heating heating temp.: approx. heating temp.: approx.
    400-500° C. 400-500° C.
    static load 3.6 kg 13.6 kg
    weight
  • It is to be noted that upon forming the wire-stranded hollow coil body 1, it is unwound in the direction opposite to that of stranding the primary approximation R, if necessary, as shown at the dimensional design in Table 2. This is to stabilize the entire configuration by absorbing the spring back accompanied with the stranding operation, and avoiding the detrimental roll or swell phenomenon caused by an uneven quality when excessively stranded.
  • The wire-stranded hollow coil body 1 is represented by the lightweight structure per a unit length and a smooth twisting manipulation based on the hollow wire tube configuration. In addition to the preceding main advantages, an advantage specific to the first method of making the wire-stranded hollow coil body 1 is obtained.
  • With the coil line elements 2 made from the austenitic stainless steel (having a high coefficient of thermal expansion) and its outer surface electrolytically polished, secondary advantages are ensured. Namely, it is possible to provide the primary approximation R with a good drawability and heat-releasable capability at the time of thermally bonding bulge portion 6, so as to alleviate the residual stress in the primary approximation R to help stabilize the main advantages. Due to the electrolytically polishedsurface, it is possible to ensure a smooth and erosion-resistant surface to stabilize an improved performance as a main wire component of the medical equipment.
  • Referring to FIGS. 6 through 17, a second embodiment of the invention is described in conjunction with a second and third method of making the wire-stranded hollow coil body 1. The primary approximation R, in which the coil line elements 2 are stranded along the predetermined circular line, is lengthwisely divided into three sections X, Y and Z, each of which has different number of strand turns as shown in FIGS. 6 and 7. When applied to the medical guide wire, the section X has maximum strand turns provided at a hand access portion 8, the section Z has a minimum strand turns provided at the leading distal end 7, and the section Y has a middle number of the strand turns provided at the halfway middle portion. The number of the strand turns progressively decreases from the section X through the section Y to the section Z, a helical pitch of which reversely increases respectively in the same order.
  • The wire-stranded hollow coil body 1 is placed between the rotationally active chuck 11 and the fixture chuck 12 of the stranding machine 10, and a slidable clamp portion 14 is placed at the boundary between the sections X, Y and Z to clamp each section by paired clamp plates 15, 15 as shown in FIG. 8. By clamping each of the sections, it is possible to produce the wire-stranded hollow coil body 1 of different strand turns depending on its sections X, Y and z by way of the second method of making the wire-stranded hollow coil body 1.
  • Each of the sections X, Y and Z has the different strand turns and represents a bending characteristics depending on the strand turns provided among multi-mechanical properties. The hand access portion 8 has a maximum rigidity which is manipulated outside the patient's body as the flexible linear tube of the medical equipment. The leading distal end portion has a highly pliable and flexible property which is introduced into the vascular system and the somatic cavity. As shown in FIG. 9, the primary approximation R has a bending rigidity (R1) successively reducing along the length dimension (L) to produce a high quality flexible linear tube as a functionally gradient substance which gradually shifts the property from a highly rigid section to a flexible section.
  • FIGS. 10 through 12 show a third embodiment of the invention in which the individually divided sections X, Y and z are placed respectively at three heating devices 16A, 16B and 16C each having different heating condition. The primary approximation R is heat treated by energizing the devices 16A, 16B and 16C concurrently at the time of stranding the primary approximation R or after the primary approximation R is stranded, so as to remove the residual stress upon formation by a third method of making the wire-stranded hollow coil body 1. Depending on the heating condition of the heating devices 16A, 16B and 16C, the sections X, Y and Z are heat treated differently to have the residual stresses removed in different degrees. This provides the wire-stranded hollow coil body 1 with the functionally gradient “tensile strength” and “bending rigidity (R2)” each gradually shifting in the lengthwise direction (L) so as to produce a high quality flexible linear tube as shown in FIG. 12.
  • FIGS. 13 through 17 show a fourth embodiment of the invention in which an outer surface of the group of the coil line elements 2 is ground in concentric relationship with the central axial hollow portion 3 to reduce an original outer diameter (DL) into a reduced outer diameter (DS). As shown at diametrical dimensions DS, D2 and D3 in FIG. 16, it is possible to diametrically reduce the wire-stranded hollow coil body 1 progressively in a stepwise fashion from the hand access portion 8 to the leading distal end 7 in accordance with the lengthwisely divided sections. As an alternative, the wire-stranded hollow coil body 1 may be progressively decreased at its diametrical dimension in a cone-shaped fashion from the hand access portion 8 to the leading distal end 7 as shown at diametrical dimensions DS and D3 in FIG. 17. From this stand of view, “the flexible wire tube being soft at the front end and rigid at the rear end portion” is attained as a requirement for the medical equipment. This realizes a functionally gradient structure which enables the manipulator to feel a smooth shift from the front soft property to the rear rigid property in proportion with a distance from the hand access portion 8.
  • Even without making the wire-stranded hollow coil body 1 into a cone-shaped or stepwise configuration, a bending rigidity and torque-transmitting capability can be improved to secure a smooth outer surface devoid of undulation between the neighboring coil line elements when compared to the structure in which the outer surface of the coil line elements 2 is not ground. This makes it possible to enhance the performance upon inserting the flexible wire tube into the vascular system and the somatic cavity.
  • FIG. 18 shows a medical equipment in which the wire-stranded hollow coil body 1 is used as the flexible wire tube. FIGS. 18, 19, 21, 22 and 25 show a flexible endscope 20 in which the wire-stranded hollow coil body 1 is used as a cloak tube 23. As shown in FIG. 19, the endscope 20 has four elongated flexible cloak tubes 23 arranged between a front angle manipulator 21 and a rear manipulator 22 in a manner distinguishable from the first reference. Each of the cloak tubes 23 has a manipulator wire 24 surrounded by a flexible outer tube 25.
  • The flexible endscope 20 is used to pass the human sigmoidal intenstine when inserted into the colon through the anus and the rectal. By applying the wire-stranded hollow coil body 1 to the endscope 20, the following advantage specific to the endscope 20 is obtained.
  • As opposed to a related art cloak tube 23A constructed from the single-wound coil structure (FIG. 20) so that a helical pitch gap P increases at its outer side of the cloak tube 23A to increase a tensile stress applied to the manipulator wire 24 when passing through the sigmoidal intenstine, it is possible to significantly reduce the tensile stress applied to the manipulator wire 24 because of its high flexibility of the cloak tubes 23 which readily adapt itself to the curved shape configuration in the present invention as shown in FIG. 21.
  • As opposed to the related art cloak tube which stretches when passing through the sigmoidal intenstine to significantly increase a length (L2) of the manipulator wire 24 extended from the cloak tube, it is possible to limit the length (L2) to a subject extension length (L1) as shown at broken lines in FIG. 22 since the cloak tubes 23 stretches in significantly small degree even when subjected to the bending deformation.
  • FIG. 23 shows a relationship between a total bending angle (θ) and an extension length (L) of the manipulator wire 24. It is found from a solid line in FIG. 23 that the flexible linear tube structure makes it possible to render the extension length (L) significantly small as compared to the related art extension length (Lp) (seventh reference) depicted by broken lines.
  • The cloak tube 23 has an increased strand pitch between the coil line elements 2 as compared to a coil pitch of the related art cloak tube 23A as understood by FIGS. 24 and 25. The structure makes it possible to significantly increase a relative friction angle (θA) against the manipulator wire 24 as compared to a relative friction angle (θB) of the related art cloak tube 23A against the manipulator wire 24. This reduces a frictional resistance between the cloak tube 23 and the manipulator wire 24 to greatly improve its push-pull maneuverability. By reversely stranding the cloak tube 23 against the manipulator wire 24 (stranding in an opposite direction), it is possible to determine the relative friction angle θA) to be around 90 degrees to improve the maneuverability.
  • The flexible endscope 20 thus constructed has advantages that enables the leading end to smoothly pass through the sigmoidal intenstine so as to significantly improve a responsiveness and manipulatability of the front angle manipulator 21 actuated by the rear manipulator 22 (FIG. 18).
  • FIG. 26 shows an endscope treating tool 30 in which a coil sheath 31 is arranged between a rear manipulator 33 and a front detain loop 34. The coil sheath 31 acts as the wire-stranded hollow coil body 1 which has a central hollow area, through which manipulator rope 32 is inserted. In addition to the main advantages, the endscope treating tool 30 provides the following advantages.
  • Namely, in the single wound coil sheath disclosed by the eighth reference, the manipulator rope is forcibly stretched so as to deteriorate the manipulatability upon inserting the coil sheath into the somatic cavity, thus loosening a grip of the front detain loop 34 against a polyp 35 so as to disable the front detain loop 34 due to a failure of clutching the polyp 35.
  • On the contrary, the subject endscope treating tool 30 has the front detain loop 34 (secured to the coil sheath 31) which stabilizes a grip against the polyp 35 with a good manipulatability so as to overcome the related art drawbacks to significantly improve a curability against the polyp 35.
  • As shown in FIG. 27, the subject endscope treating tool 30 has a sheath 42 arranged between a front biopsy cup 41 and a rear manipulator 40 in a manner distinguishable from the fifth reference. The sheath 42 serves as the wire-stranded hollow coil body 1 into which a manipulation rope 43 is inserted so as to rotationally move the front biopsy cup 41. The endscope treating tool 30 into which the wire-stranded hollow coil body 1 is incoporated as the sheath 42, provides the following advantages in addition the main advantages.
  • Namely, therein lies a situation in which an open-and-close actuation of the front biopsy cup 41 is quintessential to precisely clutch the diseased tissue to attain an improved manipulatability and actuation. However, the related art multi-wound coil sheath 42A (FIG. 28) as identified by the fifth reference tends to produce a wider gap S between the neighboring coil line elements when abruptly bended upon inserting into the somatic body. This forcible stretches the manipulation rope 43 to inadvertently twist the front biopsy cup 41 to block its open-and-close action so as to render the open-and-close action unstable.
  • With the sheath 42 formed by the wire-stranded hollow coil body 1 to effect a high rotation-following capability and high straightness due to the wire-stranded hollow coil configuration, it is possible to prevent the wider gap S from appearing between the neighboring coil line elements when abruptly bended upon inserting into the somatic body. This makes it possible to stabilize the open-close and turn manipulation of the front biopsy cup 41, whereby enabling the manipulator to positively clutch the lesion tissue efficiently with ease.
  • It is to be noted that since the endscope treating tool 30 requires a stronger torsional torque when clutching the lesion tissue, the manipulation is further improved by using the structure (FIGS. 13-17) in which the outer surface of the group of the coil line elements 2 is ground. For the same purpose, the structure (FIG. 25) may be used in which the cloak tube 23 and the manipulator wire 24 are reversely stranded each other.
  • FIGS. 29 and 30 show a pressure sensor type guide wire 45 in which a pressure sensor 48 is provided at a front distal end of a flexible hollow tube wire 46 to measure a blood pressure or to monitor a blood pressure wave through a lead line 47 in a manner distinguishable from the sixth reference. With the flexible hollow tube wire 46 into which the wire-stranded hollow coil body 1 is incoporated, the pressure sensor type guide wire 45 provides the following advantages in addition the main advantages.
  • Namely, with the flexible hollow tube wire prepared by the ordinary hollow coil body, the flexible hollow tube wire is subjected to the bending deformation so that the lead line 47 can be accidentally severed by a tensile force upon inserting it into the tortuous vascular system to confirm a post-operational condition after curing the coronary arterial stenosis (Ac) by way of example. In the case of the single wound flexible hollow tube wire, an excessive wider gap appears between the neighboring coil line elements to produce turbulences in the blood streams near the gap area so as to fluctuate the blood pressure wave measured by the pressure sensor 48 to nullify the measurements.
  • However, with the flexible hollow tube wire 46 formed by the wire-stranded hollow coil body 1 to effect a high rotation-following capability and high straightness due to the wire-stranded coil configuration, it is possible to prevent the wider gap S from appearing between the neighboring coil line elements when abruptly bended upon inserting into the somatic body. This prevents the turbulences from appearing near the gap S to enable the manipulator to stable measurements by the pressure sensor 48 with a high precision and improved performance.
  • By applying the structure of FIGS. 13-17 to the flexible hollow tube wire 46 to represent the ground outer surface of the coil line elements, it is possible to define a smooth outer surface of the flexible hollow tube wire 46 to reduce the fluid friction resistance against the blood stream so as to suppress a laminar stream resistance at a boundary layer as shown at a parabolic velocity distribution 49 in FIG. 30. This makes it possible to achieve a necessary amount of the precisely measurable blood stream with a least amount of thrombi deposited on the outer surface of the coil line elements.
  • With the austenitic stainless steel applied to the wire-stranded hollow coil body 1 and the medical equipment, the description continues with respect to the structure represented by an “austenitic stainless steel” and the electrolytically polished outer surface of the coil line elements”. By way of illustration, the martensitic stainless steel tends to harden with the heat treatment so as to likely stiffen the stranded coil section near the bulge portion 6 under the thermal influence produced at the time of soldering the bulge portion 6, thereby resultantly depriving the stranded coil section of the favorable flexibility. On the other hand, the ferritic stainless steel has the property referred to as “475° C. fragility” and having the property called as “sigma fragility” occurred when heated to approx. 600-800° C. for an extended period of time. Especially, the ferritic stainless steel grows the crystallized particles to reveal “fragility in high temperature” when heated to 950° C. or more, thereby unfavorably deteriorating the quality as a catheter or catheter guide wire due to the thermal influence brought by thermally bonding the bulge portion 6.
  • However, since the austenitic stainless steel is less subjected to the texture transformation when heated, it is less affected by the heat generated when thermally bonding the bulge portion 6. In addition, the austenitic stainless steel has a relatively small thermal conductivity and a greater coefficient of thermal expansion which is approx. 1.5-1.6 times as great as that of the general stainless steel. This means that the thermal expansion and the thermal stress produced on the wire-stranded hollow coil body 1 by thermally bonding the bulge portion 6 are absorbed by a restricted portion of the wire-stranded hollow coil body 1 near the bulge portion 6. This alleviates the residual stress produced by thermally bonding the bulge portion 6, and thereby providing a good linearity and favorable flexibility with the restricted portion of the wire-stranded hollow coil body 1 near the bulge portion 6.
  • While the martensitic stainless steel has a quench hardening property by which a tensile strength is augmented, the austenitic stainless steel increases its strength when drawn (work hardening) to be well-suited to the coil line elements of the wire-stranded hollow coil body 1. Since an electric resistance of the austenitic stainless steel is approx. five times as great as that of the carbon steel, and is approx. 1.6 times as great as that of the martensitic stainless steel. This decreases an intensity of the electric current necessary to thermally bond the bulge portion 6, whereby limiting the thermally bonding heat to a necessary minimum so as to lessen a twisting and torsional deformation under the influence of the heat generated by thermally bonding the bulge portion 6.
  • With the coil line elements 2 specified by the austenitic stainless steel, the coil line elements 2 are magnetized when drawn by a dice tool with an outer surface of the coil line elements 2 mirror-finished. This attracts iron particles on the outer surface of the coil line elements 2 and collects foreign matters between the neighboring coil line elements 2 with the help of the Van del Waals' force based on the intermolecular affinity. When the foreign matters are collected, in addition to a passively-caught rust from an opposed component part, a crevice corrosion occurs between the outer surface of the coil line elements 2 and the foreign matters so as to reduce a corrosion-resistant property. However, with the outer surface of the coil line elements 2 electrolytically polished, oxidized scales are removed to recover an original concentration of chromium component of the coil line elements 2 so as to resultantly improve the corrosion-resistant property.
  • The wire-stranded hollow coil body 1 is applied not only to the medical equipment but also to a cloak tube into which a flexible wire is inserted. In this instance, any material such as, for example, a general steel wire, a reinforced thin rope or the like can be applied to the coil line elements 2.
  • As apparent from the foregoing description, the wire-stranded hollow coil body has a flexible hollow wire tube with a high rotation-following capability and a high straightness which provides such good properties as to be appropriately applicable to main constituents of various medical tools to undergo the treatment by inserting it into the vascular system and the somatic cavity. This effectively enhances the quality and the performance of the medical tools so as to contribute to manipulative skill improvements in the medical field. Further, the method of making the wire-stranded hollow coil body enables manufacturers to mass produce high quality medical devices efficiently with a relatively low cost.

Claims (11)

1. A wire-stranded hollow coil body, comprising: a multitude of coil line elements stranded along a predetermined circular line to form a flexible linear tube having a central axial hollow portion, whereby said flexible linear tube is stranded under a strand-turn resistant load and heat treated to remove a residual stress upon formation so as to provide a high rotation-following capability and a high straightness.
2. A wire-stranded hollow coil body according to claim 1, wherein said flexible linear tube is lengthwisely divided into pluralistic sections, each of which has different a number of strand turns.
3. A wire-stranded hollow coil body according to claim 1, wherein said flexible linear tube is lengthwisely divided into pluralistic sections, each of which has residual stresses removed in different degrees.
4. A wire-stranded hollow coil body according to any one of claims 1 to 3, wherein an outer surface of said flexible linear tube is ground in concentric relationship with said predetermined circular line.
5. A wire-stranded hollow coil body according to claim 1, wherein an outer surface of said flexible linear tube is ground by an electrolytic polishing in concentric relationship with said predetermined circular line.
6. A wire-stranded hollow coil body according to claim 1, wherein said coil line elements are austenitic stainless steel.
7. A medical endscope having a cloak tube including said wire-stranded hollow coil body according to claim 1.
8. A medical endscope treating tool having a coil sheath portion including said wire-stranded hollow coil body according to claim 1.
9. A medical endscope treating tool having a manipulating sheath portion including said wire-stranded hollow coil body according to claim 1.
10. A medical guide wire having a main wire body including said wire-stranded hollow coil body according to claim 1.
11. A pressure sensor type medical guide wire having a main wire component including said wire-stranded hollow coil body according to claim 1.
US11/202,036 2002-12-11 2005-08-12 Wire-stranded hollow coil body, a medical equipment made from the same Abandoned US20060014418A1 (en)

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US10/611,664 US7117703B2 (en) 2002-12-11 2003-07-02 Wire-stranded hollow coil body, a medical equipment made therefrom and a method of making the same
US11/202,036 US20060014418A1 (en) 2002-12-11 2005-08-12 Wire-stranded hollow coil body, a medical equipment made from the same

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060213570A1 (en) * 2005-03-08 2006-09-28 Mr. Emilian Moldovan Flexible Stiffner for PEX
US20100318066A1 (en) * 2009-06-16 2010-12-16 Asahi Intecc Co., Ltd. Medical guidewire
US20100318065A1 (en) * 2009-06-16 2010-12-16 Asahi Intecc Co., Ltd. Medical guidewire
US9918705B2 (en) 2016-07-07 2018-03-20 Brian Giles Medical devices with distal control

Families Citing this family (87)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1684628B1 (en) * 2003-11-21 2018-06-13 St. Jude Medical Coordination Center BVBA Sensor and guide wire assembly
NL1025274C2 (en) * 2004-01-16 2005-07-19 Univ Delft Tech Instrument for high-precision or surgical applications.
JP2006075232A (en) * 2004-09-07 2006-03-23 Terumo Corp Wire for removing endovascular foreign body, and medical appliance
US7815580B2 (en) * 2004-09-07 2010-10-19 Stereotaxis, Inc. Magnetic guidewire for lesion crossing
EP3175827B1 (en) 2004-12-15 2019-03-06 Cook Medical Technologies LLC Multifilar cable catheter
JP4693091B2 (en) * 2004-12-21 2011-06-01 朝日インテック株式会社 The catheter and method of manufacturing the same
JP4596530B2 (en) * 2005-03-10 2010-12-08 フィルメック株式会社 Medical treatment tool
WO2006113912A1 (en) 2005-04-20 2006-10-26 Cook Incorporated Melt-bonded joint for medical devices
AT516774T (en) * 2005-04-20 2011-08-15 Cook Inc Internal connector-cannulated for medical austragegabesysteme
KR20070122570A (en) * 2005-04-20 2007-12-31 쿡 인코포레이티드 Medical delivery apparatus having tapered components
EP1871311B1 (en) * 2005-04-20 2014-11-26 Cook Medical Technologies LLC Joint for medical device delivery system
JP4880251B2 (en) * 2005-06-21 2012-02-22 オリンパスメディカルシステムズ株式会社 High-frequency treatment instrument
US8221390B2 (en) * 2006-04-20 2012-07-17 Cook Medical Technologies Llc Medical device delivery system having a sheath with a flared strain relief member operatively coupled by a unidirectional handle
JP2007325748A (en) * 2006-06-08 2007-12-20 Pentax Corp Endoscope
JP4526544B2 (en) * 2007-02-08 2010-08-18 オリンパスメディカルシステムズ株式会社 Endoscopic treatment tool
EP1955657B1 (en) * 2007-02-08 2011-01-12 Olympus Medical Systems Corp. Treatment tool for endoscope
US7655004B2 (en) 2007-02-15 2010-02-02 Ethicon Endo-Surgery, Inc. Electroporation ablation apparatus, system, and method
US8657845B2 (en) 2007-05-15 2014-02-25 Cook Medical Technologies Llc Multifilar cable catheter
US8568410B2 (en) 2007-08-31 2013-10-29 Ethicon Endo-Surgery, Inc. Electrical ablation surgical instruments
US8372017B2 (en) * 2007-10-30 2013-02-12 General Electric Company Multi-stranded trackable guidewire
US8480657B2 (en) 2007-10-31 2013-07-09 Ethicon Endo-Surgery, Inc. Detachable distal overtube section and methods for forming a sealable opening in the wall of an organ
US20090112059A1 (en) 2007-10-31 2009-04-30 Nobis Rudolph H Apparatus and methods for closing a gastrotomy
US8579897B2 (en) 2007-11-21 2013-11-12 Ethicon Endo-Surgery, Inc. Bipolar forceps
US8262655B2 (en) 2007-11-21 2012-09-11 Ethicon Endo-Surgery, Inc. Bipolar forceps
US8262680B2 (en) 2008-03-10 2012-09-11 Ethicon Endo-Surgery, Inc. Anastomotic device
US20090270841A1 (en) * 2008-04-24 2009-10-29 Cook Incorporated Catheters
US8679003B2 (en) 2008-05-30 2014-03-25 Ethicon Endo-Surgery, Inc. Surgical device and endoscope including same
US8771260B2 (en) 2008-05-30 2014-07-08 Ethicon Endo-Surgery, Inc. Actuating and articulating surgical device
US8403926B2 (en) 2008-06-05 2013-03-26 Ethicon Endo-Surgery, Inc. Manually articulating devices
US8361112B2 (en) 2008-06-27 2013-01-29 Ethicon Endo-Surgery, Inc. Surgical suture arrangement
US8888792B2 (en) 2008-07-14 2014-11-18 Ethicon Endo-Surgery, Inc. Tissue apposition clip application devices and methods
US8262563B2 (en) 2008-07-14 2012-09-11 Ethicon Endo-Surgery, Inc. Endoscopic translumenal articulatable steerable overtube
US8211125B2 (en) 2008-08-15 2012-07-03 Ethicon Endo-Surgery, Inc. Sterile appliance delivery device for endoscopic procedures
US8529563B2 (en) 2008-08-25 2013-09-10 Ethicon Endo-Surgery, Inc. Electrical ablation devices
US8241204B2 (en) 2008-08-29 2012-08-14 Ethicon Endo-Surgery, Inc. Articulating end cap
US8480689B2 (en) 2008-09-02 2013-07-09 Ethicon Endo-Surgery, Inc. Suturing device
US8409200B2 (en) 2008-09-03 2013-04-02 Ethicon Endo-Surgery, Inc. Surgical grasping device
US8337394B2 (en) 2008-10-01 2012-12-25 Ethicon Endo-Surgery, Inc. Overtube with expandable tip
US8157834B2 (en) 2008-11-25 2012-04-17 Ethicon Endo-Surgery, Inc. Rotational coupling device for surgical instrument with flexible actuators
US8361066B2 (en) 2009-01-12 2013-01-29 Ethicon Endo-Surgery, Inc. Electrical ablation devices
US20100191050A1 (en) * 2009-01-23 2010-07-29 Ethicon Endo-Surgery, Inc. Variable length accessory for guiding a flexible endoscopic tool
US8252057B2 (en) 2009-01-30 2012-08-28 Ethicon Endo-Surgery, Inc. Surgical access device
US9226772B2 (en) * 2009-01-30 2016-01-05 Ethicon Endo-Surgery, Inc. Surgical device
CN101502693A (en) * 2009-03-27 2009-08-12 北京天地和协科技有限公司 Guiding wire
US8100881B2 (en) 2009-08-04 2012-01-24 Cook Medical Technologies Llc Flexible medical device for clot removal from small vessels
WO2011053415A1 (en) 2009-09-30 2011-05-05 Cook Incorporated Short wire cable catheter
JP5437772B2 (en) * 2009-10-27 2014-03-12 朝日インテック株式会社 Medical treatment tool
US8608652B2 (en) 2009-11-05 2013-12-17 Ethicon Endo-Surgery, Inc. Vaginal entry surgical devices, kit, system, and method
JP5437778B2 (en) * 2009-11-30 2014-03-12 朝日インテック株式会社 Medical treatment tool
US8607660B2 (en) * 2009-12-02 2013-12-17 Ford Global Technologies, Llc Vehicle braking assembly
US8353487B2 (en) 2009-12-17 2013-01-15 Ethicon Endo-Surgery, Inc. User interface support devices for endoscopic surgical instruments
US8496574B2 (en) 2009-12-17 2013-07-30 Ethicon Endo-Surgery, Inc. Selectively positionable camera for surgical guide tube assembly
US9028483B2 (en) 2009-12-18 2015-05-12 Ethicon Endo-Surgery, Inc. Surgical instrument comprising an electrode
US8506564B2 (en) 2009-12-18 2013-08-13 Ethicon Endo-Surgery, Inc. Surgical instrument comprising an electrode
JP5004256B2 (en) 2009-12-25 2012-08-22 朝日インテック株式会社 Medical guide wire
US9005198B2 (en) 2010-01-29 2015-04-14 Ethicon Endo-Surgery, Inc. Surgical instrument comprising an electrode
JP5436266B2 (en) * 2010-02-26 2014-03-05 朝日インテック株式会社 Medical coil structure, a method of manufacturing the same and a medical endoscope comprising forming a medical coil structure, and a medical treatment tool, and ultrasonic diagnostic medical catheters, light interference diagnostic medical catheters,
JP5246884B2 (en) * 2010-08-10 2013-07-24 朝日インテック株式会社 Guide wire
US10092291B2 (en) 2011-01-25 2018-10-09 Ethicon Endo-Surgery, Inc. Surgical instrument with selectively rigidizable features
US9233241B2 (en) 2011-02-28 2016-01-12 Ethicon Endo-Surgery, Inc. Electrical ablation devices and methods
US9254169B2 (en) 2011-02-28 2016-02-09 Ethicon Endo-Surgery, Inc. Electrical ablation devices and methods
US9314620B2 (en) 2011-02-28 2016-04-19 Ethicon Endo-Surgery, Inc. Electrical ablation devices and methods
WO2012125785A1 (en) 2011-03-17 2012-09-20 Ethicon Endo-Surgery, Inc. Hand held surgical device for manipulating an internal magnet assembly within a patient
JP5459723B2 (en) * 2011-12-26 2014-04-02 朝日インテック株式会社 Medical guide wire
US8986199B2 (en) 2012-02-17 2015-03-24 Ethicon Endo-Surgery, Inc. Apparatus and methods for cleaning the lens of an endoscope
US9427255B2 (en) 2012-05-14 2016-08-30 Ethicon Endo-Surgery, Inc. Apparatus for introducing a steerable camera assembly into a patient
US9078662B2 (en) 2012-07-03 2015-07-14 Ethicon Endo-Surgery, Inc. Endoscopic cap electrode and method for using the same
US9545290B2 (en) 2012-07-30 2017-01-17 Ethicon Endo-Surgery, Inc. Needle probe guide
US9572623B2 (en) 2012-08-02 2017-02-21 Ethicon Endo-Surgery, Inc. Reusable electrode and disposable sheath
US9119740B2 (en) * 2012-08-09 2015-09-01 Cook Medical Technologies Llc Introducer sheath
US9277957B2 (en) 2012-08-15 2016-03-08 Ethicon Endo-Surgery, Inc. Electrosurgical devices and methods
RU2015115888A (en) * 2012-09-28 2016-11-20 Конинклейке Филипс Н.В. The design of the cavity for the optimal integration of the optical fiber for shape recognition
WO2014105578A1 (en) * 2012-12-27 2014-07-03 Volcano Corporation Intravascular guidewire with hyper flexible distal end portion
US10098527B2 (en) 2013-02-27 2018-10-16 Ethidcon Endo-Surgery, Inc. System for performing a minimally invasive surgical procedure
US9192499B2 (en) * 2013-03-11 2015-11-24 Cook Medical Technologies Llc Inner catheter for a self-expanding medical device delivery system with a closed coil wire
US20140277005A1 (en) * 2013-03-14 2014-09-18 Covidien Lp Medical device including flexible elongate torque-transmitting member
JP5780532B2 (en) * 2013-12-06 2015-09-16 朝日インテック株式会社 Medical guide wire
JP2015137428A (en) * 2014-01-20 2015-07-30 朝日インテック株式会社 Twisted wire and guide wire using the same
US9955878B2 (en) * 2014-02-03 2018-05-01 Volcano Corporation Intravascular devices, systems, and methods having a core wire with embedded conductors
JP2016013269A (en) * 2014-07-02 2016-01-28 朝日インテック株式会社 Guide wire
US9636477B2 (en) 2014-10-09 2017-05-02 Vascular Solutions, Inc. Catheter
US9782561B2 (en) 2014-10-09 2017-10-10 Vacular Solutions, Inc. Catheter tip
US10258240B1 (en) 2014-11-24 2019-04-16 Vascular Imaging Corporation Optical fiber pressure sensor
JP1539256S (en) * 2015-04-30 2015-11-30
JP5870227B1 (en) * 2015-06-26 2016-02-24 トクセン工業株式会社 Operation rope
JP6423374B2 (en) * 2016-01-07 2018-11-14 トクセン工業株式会社 Hollow stranded wire for operation
US10238834B2 (en) 2017-08-25 2019-03-26 Teleflex Innovations S.À.R.L. Catheter

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4932419A (en) * 1988-03-21 1990-06-12 Boston Scientific Corporation Multi-filar, cross-wound coil for medical devices
US4953553A (en) * 1989-05-11 1990-09-04 Advanced Cardiovascular Systems, Inc. Pressure monitoring guidewire with a flexible distal portion
US5230348A (en) * 1990-10-12 1993-07-27 Nippon Seisen Co., Ltd. Guide wire for a catheter
US5373619A (en) * 1987-09-30 1994-12-20 Lake Region Manufacturing Co., Inc. Method of making a hollow lumen cable
US5376083A (en) * 1990-10-31 1994-12-27 Lake Region Manufacturing Company, Inc. Steerable infusion guide wire
US5741429A (en) * 1991-09-05 1998-04-21 Cardia Catheter Company Flexible tubular device for use in medical applications
US5840046A (en) * 1996-06-21 1998-11-24 Medtronic, Inc. Guidewire having hydrophilic coating
US5932035A (en) * 1993-10-29 1999-08-03 Boston Scientific Corporation Drive shaft for acoustic imaging catheters and flexible catheters
US5984877A (en) * 1991-02-05 1999-11-16 Fleischhacker, Jr.; Joseph F. Guide wire marker technique and coil spring marker technique
US6107004A (en) * 1991-09-05 2000-08-22 Intra Therapeutics, Inc. Method for making a tubular stent for use in medical applications
US6168571B1 (en) * 1997-04-15 2001-01-02 Symbiosis Corporation Linear elastic member
US6348041B1 (en) * 1999-03-29 2002-02-19 Cook Incorporated Guidewire
US6383146B1 (en) * 1999-03-29 2002-05-07 Cook Incorporated Guidewire
US6527706B2 (en) * 2000-02-03 2003-03-04 Fuji Photo Optical Co., Ltd. Insertion instrument of an endoscope
US20030069522A1 (en) * 1995-12-07 2003-04-10 Jacobsen Stephen J. Slotted medical device
US6589227B2 (en) * 2000-01-28 2003-07-08 William Cook Europe Aps Endovascular medical device with plurality of wires

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04309371A (en) 1991-04-08 1992-10-30 Kato Hatsujo Kaisha Ltd Medical tube and its production
JPH07213481A (en) 1994-02-01 1995-08-15 Fuji Photo Optical Co Ltd Soft endoscope
US6436056B1 (en) * 1996-02-28 2002-08-20 Boston Scientific Corporation Polymeric implements for torque transmission
JP3732911B2 (en) 1996-10-08 2006-01-11 ペンタックス株式会社 Endoscopic treatment tool
JPH10290803A (en) 1997-02-21 1998-11-04 Olympus Optical Co Ltd Treating implement for endoscope
JPH1125758A (en) 1997-07-07 1999-01-29 Sanshu Densen Kk Hollow compressed stranded wire
JPH1133004A (en) 1997-07-15 1999-02-09 Nippon B X I Kk Guide wire with pressure sensor
JPH11104071A (en) 1997-08-05 1999-04-20 Olympus Optical Co Ltd Treating instrument for endoscope
US6508803B1 (en) * 1998-11-06 2003-01-21 Furukawa Techno Material Co., Ltd. Niti-type medical guide wire and method of producing the same
JP2002275774A (en) 2001-03-21 2002-09-25 Asahi Intecc Co Ltd Tube body for medical treatment, balloon catheter, and guide wire for medical treatment
US6881194B2 (en) 2001-03-21 2005-04-19 Asahi Intec Co., Ltd. Wire-stranded medical hollow tube, and a medical guide wire

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5373619A (en) * 1987-09-30 1994-12-20 Lake Region Manufacturing Co., Inc. Method of making a hollow lumen cable
US4932419A (en) * 1988-03-21 1990-06-12 Boston Scientific Corporation Multi-filar, cross-wound coil for medical devices
US4953553A (en) * 1989-05-11 1990-09-04 Advanced Cardiovascular Systems, Inc. Pressure monitoring guidewire with a flexible distal portion
US5230348A (en) * 1990-10-12 1993-07-27 Nippon Seisen Co., Ltd. Guide wire for a catheter
US5376083A (en) * 1990-10-31 1994-12-27 Lake Region Manufacturing Company, Inc. Steerable infusion guide wire
US5984877A (en) * 1991-02-05 1999-11-16 Fleischhacker, Jr.; Joseph F. Guide wire marker technique and coil spring marker technique
US5741429A (en) * 1991-09-05 1998-04-21 Cardia Catheter Company Flexible tubular device for use in medical applications
US6107004A (en) * 1991-09-05 2000-08-22 Intra Therapeutics, Inc. Method for making a tubular stent for use in medical applications
US5932035A (en) * 1993-10-29 1999-08-03 Boston Scientific Corporation Drive shaft for acoustic imaging catheters and flexible catheters
US20030069522A1 (en) * 1995-12-07 2003-04-10 Jacobsen Stephen J. Slotted medical device
US5840046A (en) * 1996-06-21 1998-11-24 Medtronic, Inc. Guidewire having hydrophilic coating
US6168571B1 (en) * 1997-04-15 2001-01-02 Symbiosis Corporation Linear elastic member
US6348041B1 (en) * 1999-03-29 2002-02-19 Cook Incorporated Guidewire
US6383146B1 (en) * 1999-03-29 2002-05-07 Cook Incorporated Guidewire
US6589227B2 (en) * 2000-01-28 2003-07-08 William Cook Europe Aps Endovascular medical device with plurality of wires
US6527706B2 (en) * 2000-02-03 2003-03-04 Fuji Photo Optical Co., Ltd. Insertion instrument of an endoscope

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060213570A1 (en) * 2005-03-08 2006-09-28 Mr. Emilian Moldovan Flexible Stiffner for PEX
US20100318066A1 (en) * 2009-06-16 2010-12-16 Asahi Intecc Co., Ltd. Medical guidewire
US20100318065A1 (en) * 2009-06-16 2010-12-16 Asahi Intecc Co., Ltd. Medical guidewire
US8852126B2 (en) 2009-06-16 2014-10-07 Asahi Intecc Co., Ltd. Medical guidewire
US8956310B2 (en) 2009-06-16 2015-02-17 Asahi Intecc Co., Ltd. Medical guidewire
US8961434B2 (en) 2009-06-16 2015-02-24 Asahi Intecc Co., Ltd. Medical guidewire
US9017268B2 (en) 2009-06-16 2015-04-28 Asahi Intecc Co., Ltd. Medical guidewire
US9918705B2 (en) 2016-07-07 2018-03-20 Brian Giles Medical devices with distal control

Also Published As

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CN100399976C (en) 2008-07-09
EP1428547A3 (en) 2006-10-04
EP1428547A2 (en) 2004-06-16
US7117703B2 (en) 2006-10-10
JP2004190167A (en) 2004-07-08
CN1506022A (en) 2004-06-23
JP4098613B2 (en) 2008-06-11
US20040116833A1 (en) 2004-06-17
CN101238968A (en) 2008-08-13
EP1428547B1 (en) 2016-10-05

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