WO2007105531A1 - ガイドワイヤ - Google Patents
ガイドワイヤ Download PDFInfo
- Publication number
- WO2007105531A1 WO2007105531A1 PCT/JP2007/054266 JP2007054266W WO2007105531A1 WO 2007105531 A1 WO2007105531 A1 WO 2007105531A1 JP 2007054266 W JP2007054266 W JP 2007054266W WO 2007105531 A1 WO2007105531 A1 WO 2007105531A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- guide wire
- curved
- curved portion
- bending
- bending portion
- Prior art date
Links
- 238000005452 bending Methods 0.000 claims description 90
- 230000007704 transition Effects 0.000 claims description 11
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 210000004204 blood vessel Anatomy 0.000 description 39
- 238000011156 evaluation Methods 0.000 description 26
- 230000000052 comparative effect Effects 0.000 description 15
- 239000000463 material Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 239000000470 constituent Substances 0.000 description 5
- 239000000956 alloy Substances 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 229910001000 nickel titanium Inorganic materials 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 210000000707 wrist Anatomy 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 210000002321 radial artery Anatomy 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229920001477 hydrophilic polymer Polymers 0.000 description 1
- KHYBPSFKEHXSLX-UHFFFAOYSA-N iminotitanium Chemical compound [Ti]=N KHYBPSFKEHXSLX-UHFFFAOYSA-N 0.000 description 1
- 210000005240 left ventricle Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/09—Guide wires
-
- 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
- A61M25/09—Guide wires
- A61M2025/09133—Guide wires having specific material compositions or coatings; Materials with specific mechanical behaviours, e.g. stiffness, strength to transmit torque
-
- 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
- A61M25/09—Guide wires
- A61M2025/0915—Guide wires having features for changing the stiffness
-
- 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
- A61M25/09—Guide wires
- A61M2025/09175—Guide wires having specific characteristics at the distal 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
- A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
- A61M25/0041—Catheters; Hollow probes characterised by the form of the tubing pre-formed, e.g. specially adapted to fit with the anatomy of body channels
Definitions
- the present invention relates to a guide mechanism used for introducing a medical device such as a catheter or an introducer kit used for treatment or examination to a desired site in a blood vessel.
- a guide wire is used when a medical device such as a catheter or an introduce circuit is introduced and placed in a blood vessel when a blood vessel is diagnosed and treated percutaneously.
- morals thighs
- brachial upper arm
- radial radial
- a guide wire having a saddle-like shape at the tip which can be safely used in the blood vessels of the arm, which are often transitioning to the (wrist part) and often have branches and meanders, and has excellent operability.
- the angle formed between the direction extension line of the straight end portion of the guide wire and the wire base line with respect to the tip shape of the guide wire should be 40 to 70 °, so that the guide needle, catheter, sheath, etc.
- a device that does not require an auxiliary device for inserting a wire is disclosed (for example, see Patent Document 1).
- the guide wire of Patent Document 2 has an inner diameter of a treatment tube to be used in advance, when a guide wire having a shape corresponding to the inner diameter is used, the guide wire from the side hole of the treatment tube is used. It was hard to get out.
- blood vessels have different diameters depending on the individual or site, if the guide wire of Patent Document 2 is used for a blood vessel, use a different shape for each patient or site so that it does not enter the side branch of the blood vessel. I had to divide it.
- the guide wire of Patent Document 3 is also difficult to get into the side branch in a blood vessel with a thin side branch, but in a blood vessel with a thick side branch, it may get into the side branch and reach the target site. Ivy
- the guide wai of Patent Document 4 has a force that has a shape that allows selection of both a large diameter and a small branch of the vessel. If it is introduced from the wrist as described above, it will take time to operate.
- the guide wire of Patent Document 5 is a force in which the tip shape is made into an S shape for introduction into a blood vessel branch. Because of this, the inserter had to be used every time it was difficult to insert into the introducer needle or catheter.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2004-181184
- Patent Document 2 Japanese Patent Laid-Open No. 11-76415
- Patent Document 3 Japanese Translation of Special Publication 2003-530132
- Patent Document 4 Japanese Translation of Special Publication 2003-508168
- Patent Document 5 Japanese Utility Model Publication No. 61-7736
- An object of the present invention is to provide a guide wire with good operability.
- the present invention provides:
- a guide wire having a force between the distal end portion and the main body portion, having a first bending portion and a second bending portion that is bent on the distal end side of the first bending portion and curves in a direction opposite to the first bending portion.
- Part and the second A third curved portion that is curved in a direction opposite to the second curved portion and is in contact with both the first curved portion and the third curved portion. Is an obtuse angle with respect to the axis of the main body.
- the operability is excellent when the guide wire is operated.
- a radial artery introduction guide wire introduced from the radial artery of the wrist it can be inserted smoothly to the target site, making it difficult to get into the side branch for various blood vessel diameters ranging from individual differences to the left ventricle. .
- the leading edge of the guide wire is parallel to the line that is in contact with both the first curved portion and the third curved portion, and the second curved portion. It is preferable to be positioned between the line that touches the curved part! /.
- the direction of the portion that transitions from the first curved portion to the second curved portion has a larger angle with respect to the axis than the direction in which the leading edge faces. Is preferred.
- a guide wire when a guide wire is inserted into a tubular medical device such as an introduction needle, a catheter, or a sheath, the insertion operation can be easily and reliably performed.
- a portion of the guide wire that transitions from the second curved portion to the third curved portion is substantially parallel to the axis.
- a guide wire when a guide wire is inserted into a tubular medical device such as an introduction needle, a catheter, or a sheath, the insertion operation can be easily and reliably performed.
- a portion of the guide wire that transitions from the second curved portion to the third curved portion is a direction that spreads with respect to the axis.
- a portion of the guide wire that transitions from the second curved portion to the third curved portion is in a direction narrowing with respect to the axis.
- the present invention provides:
- a guide wire having a force between a distal end portion and a body portion, wherein the distal end portion has a curved portion.
- the operability is excellent when the guide wire is operated.
- the first bending portion is more flexible than the main body portion, and the second bending portion is more flexible than the first bending portion. I like it.
- the present invention provides:
- a guide wire having a front end portion and a body portion force having a first bending portion provided at the front end portion, and a front end side of the first bending portion, and bending in a direction opposite to the first bending portion.
- a second bending portion, a third bending portion that is provided on a distal end side of the second bending portion and is bent in a direction opposite to the second bending portion, and the first bending portion is The second bending portion, which is more flexible than the main body portion, is a guide wire characterized by being more flexible than the first bending portion.
- the operability is excellent when the guide wire is operated. Even if the leading edge of the guide wire enters the branch, it reverses and advances through the main blood vessels, and does not get lost in the branch.
- the third curved portion has higher flexibility than the second curved portion, or the same flexibility.
- the guide wire includes a core wire having a distal end portion and a covering portion that covers at least the distal end portion of the core wire and is made of grease. preferable.
- the tip end portion of the core wire has a flat portion. [0035] Thereby, higher flexibility is exhibited in the flat portion.
- the core wire where the third bending portion is located is a flat portion, and the third bending portion is more flexible than the second bending portion. High is preferred.
- FIG. 1 is a partially enlarged view showing an embodiment of a guide wire according to the present invention.
- FIG. 2 is a partially enlarged view showing another embodiment of the guide wire of the present invention.
- FIG. 3 is a perspective view showing the internal structure of the guide wire of the present invention.
- FIG. 4 is a perspective view showing a part of the internal structure of the guide wire of the present invention.
- FIG. 5 is a partially enlarged view showing another embodiment of the guide wire of the present invention.
- FIG. 6 is an end view showing another embodiment of the guide wire of the present invention.
- FIG. 7 is an end view showing another embodiment of the guide wire of the present invention.
- FIG. 8 is an end view showing another embodiment of the guide wire of the present invention.
- FIG. 9 is an end view showing another embodiment of the guide wire of the present invention.
- FIG. 10 is a cross-sectional view showing another embodiment of the guide wire of the present invention.
- FIG. 11 is a diagram (plan view) showing a specific configuration of the guide wire shown in FIG. 1.
- FIG. 12 is a diagram (plan view) showing a specific configuration of the guide wire of Comparative Example 1.
- FIG. 13 shows a specific configuration of the guide wire of Comparative Example 2.
- FIG. 14 is a diagram (plan view) showing a specific configuration of the guide wire of Comparative Example 3.
- FIG. 15 is a diagram of Comparative Example 4.
- FIG. 16 is a diagram (plan view) showing a specific configuration of a guide wire.
- FIG. 16 is a diagram (plan view) showing a specific configuration of a guide wire of Comparative Example 5.
- FIG. 17 is a view showing an evaluation tool used for evaluating each guide wire shown in FIG. 11 to FIG.
- FIG. 18 is a view showing an evaluation tool used for evaluating each guide wire shown in FIG. 11 to FIG.
- FIG. 1 is a partially enlarged view showing an embodiment of the guide wire of the present invention
- FIG. 2 is a partially enlarged view showing another embodiment of the guide wire of the present invention.
- a guide wire 1A according to an embodiment of the present invention is a guide wire including a tip portion 10 and a main body portion 20 as shown in FIG.
- the distal end portion 10 has a curved portion.
- the distal end portion 10 has a first curved portion 31 following the distal end side of the main body portion 20.
- the distal end portion 10 has a second curved portion 32 that is provided on the distal end side of the first curved portion 31 and is curved in a direction opposite to the first curved portion 31.
- a straight portion may be provided between the first curved portion 31 and the second curved portion 32.
- the distal end portion 10 has a third curved portion 33 that is provided on the distal end side of the second curved portion 32 and is curved in a direction opposite to the second curved portion 32.
- a straight line portion may be provided between the second curved portion 32 and the third curved portion 33.
- the distal end side of the third curved portion 33 terminates at the forefront 12.
- the first bending portion 31, the second bending portion 32, and the third bending portion 33 are configured on the same plane.
- the guide wire 1A has a line A in contact with both the first bending portion 31 and the third bending portion 32.
- the line A passes through the contact point 51 of the first curved part 31 and the contact point 53 of the third curved part 33.
- the line A is an obtuse angle in a natural state with respect to the axis Y of the main body 20.
- the “natural state” means a state in which no external force is applied to the guide wire 1A.
- the angle K between the line A and the axis Y is preferably 20 to 45 degrees, more preferably 25 to 42 degrees.
- the leading edge 12 of the guide wire 1A is a line A that contacts both the first curved portion 31 and the third curved portion 32, and is parallel to the line A and touches the second curved portion 32. Located between line B. Line B passes through the contact 52 of the second bend 32.
- the direction M of the portion 71 transitioning from the first curved portion 31 to the second curved portion 32 is larger with respect to the axis Y than the direction N in which the leading edge 12 faces.
- Second curved part 32 to third curved part The direction L of the portion 72 that transitions to the portion 33 is a direction that spreads in the tip direction with respect to the axis Y.
- the distance D between the line A and the line B is 2 to: L lmm is preferable, and 4 to 9 mm is more preferable. If the distance D is smaller than 2 mm, the leading edge 12 will contact the vessel wall when traveling through the blood vessel, increasing the chance of intrusion.If the distance D is larger than 11 mm, the leading edge will be used when traveling through a relatively thin blood vessel. 12 contacts the blood vessel wall.
- the distance E between the vertex 52 of the second curved portion 32 and the axis Y of the main body portion 20 is preferably 9 to 16 mm, and more preferably 10 to 15 mm.
- the second curved portion 32 When the distance E is smaller than 9 mm, the second curved portion 32 does not contact the blood vessel wall when moving through a thick blood vessel, and the leading edge 12 approaches or comes into contact with the blood vessel wall, causing the side branch to enter. If there are more opportunities and the diameter is larger than 16 mm, the second curved portion 32 will expand when going through a narrow blood vessel, the leading edge 12 will warp, and there will be many opportunities to contact the vessel wall, resulting in intrusion The possibility of is increased.
- the guide wire 1A has a core wire and a covering portion that covers at least the tip portion of the core wire and is made of grease.
- the core wire is preferably a NiTi alloy wire. Polyurethane is preferred for the resin of the coating. It is preferable that the surface of the coating is coated with a hydrophilic polymer. Since the core wire is tapered at the distal end portion 10, the distal end portion 10 is more flexible than the main body portion 20.
- the guide wire 1A can be easily inserted into an introduction needle, a catheter, or a sheath! / ⁇ . Specifically, a guide wire 1A is easily inserted into the hub from its distal end side into a catheter having a flexible tubular catheter body and a knob installed at the proximal end of the catheter body. be able to.
- the guide wire 1A can reach the target site quickly without difficulty in entering the side branch through the assumed blood vessel. Specifically, when the guide wire 1A is inserted into a blood vessel, if the blood vessel is straight, the leading edge 12 of the guide wire 1A is prevented from being suppressed or suppressed. In addition, when the blood vessel into which the guide wire 1A is inserted has a side branch (blood vessel) whose branching force is also branched, the distal end portion 10 of the guide wire 1A is prevented from entering the side branch unintentionally. As a result, the guide wire 1A can quickly reach the target site in the blood vessel.
- FIG. 2 shows a guide wire 1B as another embodiment in addition to the above-described guide wire 1A. 1C, ID is shown.
- the direction L of the portion that transitions from the second bending portion to the third bending portion is substantially parallel to the axis Y.
- the direction L of the portion that transitions from the second curved portion to the third curved portion is a direction that narrows by urging toward the tip with respect to the axis Y.
- the guide wire 1D is a direction in which the direction L extends with respect to the axis Y toward the tip.
- FIG. 3 is a perspective view showing the internal structure of the guide wire of the present invention. In order to show the internal structure, the curved portion of the tip 10 is omitted.
- a guide wire 1E shown in FIG. 3 is composed of a core wire 40 having a core wire tip portion 41 and a covering portion 60 that covers at least the core wire tip portion 41 and is made of grease.
- the core wire 40 includes a core wire main body portion 42, a taper portion 44, and a core wire tip portion 41. Examples of the material of the core wire 40 include NiTi alloy and stainless steel.
- the core wire 40 is preferably made of a superelastic alloy.
- the core wire main body 42 has a circular cross section.
- a tapered portion 44 is provided on the distal end side of the core wire main body portion 42.
- the taper portion 44 gradually decreases in outer diameter as it is directed toward the tip.
- the taper portion 44 of FIG. 3 may change the taper angle at a part of the force taper portion whose outer diameter decreases at a constant rate toward the tip.
- the taper angle on the proximal end side may be larger than the taper angle on the distal end side.
- the taper angle on the proximal end side may be smaller than the taper angle on the distal end side.
- a core wire tip portion 41 is provided on the tip end side of the taper portion 44.
- the core wire tip portion 41 has a flat portion 46.
- the flat portion 46 has a width and a thickness, and the width is larger than the thickness. The flat portion 46 is easily bent in the thickness direction.
- the core wire distal end portion 41 may have a uniform outer diameter portion on the distal end side of the tapered portion 44. In this case, it continues to the flat part 46 through the transition part on the tip side of the uniform outer diameter part.
- the cross-sectional area of the core wire main body portion 42 is larger than the cross-sectional area of the core wire tip portion 41.
- the flat portion 46 is preferably superelastic. In the load-strain curve, the elastic modulus in the elastic region of the flat portion 46 is preferably smaller than the elastic modulus in the elastic region of the core wire main body 42. With such a configuration, flexibility can be ensured even if the thickness of the flat portion 46 is not extremely reduced.
- the covering 60 that covers the core wire tip 41 is made of a resin such as polyurethane.
- the covering portion 60 covers the core wire tip portion 41, the core wire main body portion 42, and the taper portion 44, but may cover only the core wire tip portion 41. Further, the covering portion 60 may cover only the core wire tip portion 41 and the taper portion 44.
- the flat portion 46 of the core wire distal end portion 41 may be provided with a flexible portion.
- a flexible portion 48 in which the thickness of the flat portion 46 is made thinner is provided in the middle of the flat end portion 46.
- the width of the flexible part 48 is wider than the width of the flat part 46. From the viewpoint that the strength of the flexible portion 48 can be maintained, it is preferable that the cross-sectional area of the flat portion 46 and the cross-sectional area of the flexible portion 48 are substantially equal.
- the thickness of the flexible portion 48 may be made thinner than the thickness of the flat portion 46, and the width of the flexible portion 48 may be the same as the width of the flat portion 46.
- the flexible portion may be formed by changing the material by heat treatment or the like.
- the shape of the guide wires 1A, 1B, 1C and ID described above can be applied to the force bending portion in which the bending portion of the distal end portion 10 is omitted to show the internal structure.
- FIG. 5 is a partially enlarged view showing another embodiment of the guide wire of the present invention.
- a guide wire 1E having the structure shown in FIG. 3 on the guide wire 1A having the shape described above is composed of a tip portion 10 and a main body portion 20.
- the distal end portion 10 includes a first bending portion 31, a second bending portion 32, and a third bending portion 33.
- the second bending portion 32 is provided on the distal end side of the first bending portion 31.
- the second bending portion 32 is bent in the opposite direction to the first bending portion 31.
- the third bending portion 33 is provided on the distal end side of the second bending portion 32.
- the third bending portion 33 is bent in the opposite direction to the second bending portion 32.
- the first curved portion 31 is more flexible than the main body portion 20.
- the second bending portion 32 is more flexible than the first bending portion 31.
- the third bending portion 33 may have the same flexibility as the second bending portion 32.
- the third bending portion 33 may be more flexible than the second bending portion 32.
- FIG. 6 shows another embodiment of the guide wire of the present invention, and is an end view of each part at the position shown in FIG. In FIG. 5, the end face from AA to FF is shown perpendicular to the axis of the guide wire 1E.
- A—A end view is an end face of the main body portion 20 of the guide wire 1E.
- the guide wire 1E is composed of a core wire main body portion 42 of the core wire 40 and a covering portion 60 that concentrically covers the periphery thereof.
- the BB end view is an end view of a portion that is on the base end side with respect to the first bending portion 31 and is on the axis of the main body portion 20.
- the position of the B—B end view is the taper portion 44 in the core wire 40.
- the cross-sectional area of the taper part 44 is smaller than the cross-sectional area of the core wire main body part 42 in the A—A end view.
- the C—C end view is an end view at the apex of the first bending portion 31.
- the position of the C—C end view is the taper portion 44 in the core wire 40.
- the taper portion 44 in the C—C end view is on the tip side of the taper portion 44 in the BB end view.
- the sectional area of the tapered portion 44 in the C—C end view is smaller than the sectional area of the tapered portion 44 in the BB end view.
- the apex of the first curved portion 31 is located between the start portion and the end portion of the taper portion 44 of the core wire 40.
- the end portion of the taper portion 44 is located on the tip side of the apex of the first bending portion 31.
- the first curved portion 31 is located at the tapered portion 44 of the core wire 40. Since the core wire 40 in the first curved portion 31 is the tapered portion 44, the first curved portion 31 is more flexible than the main body portion 20.
- the D—D end view is an end view at the apex of the second bending portion 32.
- the position of the D—D end view is the flat portion 46 in the core wire 40. Since the core wire 40 in the second curved portion 32 is the flat portion 46, the second curved portion 32 is more flexible than the first curved portion 31.
- the cross-sectional area of the flat portion 46 in the second curved portion 32 is smaller than the cross-sectional area of the tapered portion 44 in the first curved portion 31.
- the thickness of the flat portion 46 is smaller than the outer diameter of the tapered portion 44 in the first curved portion 31. Accordingly, the second bending portion 32 is more flexible than the first bending portion 31.
- the flexible second curved portion 32 is bent to a second layer. It goes through the main blood vessel with the curved portion 32 at the top and does not get into the side branch.
- the EE end view is an end view at the apex of the third bending portion 33.
- the position of the E—E end view is the flat portion 46 in the core wire 40. Since the core wire 40 in the third curved portion 33 is the same flat portion 46 as the second curved portion 32, the third curved portion 33 has the same flexibility as the second curved portion 32.
- the FF end view is an end view at the forefront 12.
- the position of the F—F end view is the flat portion 46 in the core wire 40. Since the core wire 40 in the most advanced 12 is the same flat portion 46 as the second curved portion 32 and the third curved portion 33, the third curved portion 33 is the second curved portion 32 and the third curved portion 46. It has the same flexibility as the curved portion 33.
- FIG. 7 is an end view showing another embodiment at the position shown in FIG. A-A end view, B-B end view, D-D end view, E-E end view and F-F end view of the embodiment shown in FIG. 7 are the same as those in FIG.
- the core wire 40 in the end view is a flat portion 46.
- the cross-sectional area of the flat portion 46 shown in the C—C end view is smaller than the cross-sectional area of the tapered portion 44 in the BB end view. Since the core wire 40 in the first curved portion 31 is the flat portion 46, the first curved portion 31 is more flexible than the main body portion 20.
- FIG. 8 is an end view showing another embodiment at the position shown in FIG. A-A end view, B-B end view, C- C end view, D-D end view, and FF end view of the embodiment shown in FIG. 8 are the same as those in FIG.
- the E end view is the flexible part 48 of the core wire 40.
- the flat part 46 is made thinner.
- the width of the flexible part 48 is wider than the width of the flat part 46. Therefore, the third bending portion 33 is more flexible than the second bending portion 32.
- FIG. 9 is an end view showing another embodiment at the position shown in FIG.
- the AA end view and BB end view of the embodiment shown in FIG. 9 are the same as FIG.
- the cross-sectional area of the taper portion 44 shown in the C—C end view is larger than the cross-sectional area of the taper portion 44 shown in the CC end view in FIG.
- the cross-sectional area of the tapered portion 44 shown in the DD end view is smaller than the cross-sectional area of the tapered portion 44 shown in the CC end view in the same drawing.
- the second bending portion 32 is more flexible than the first bending portion 31.
- the core wire 40 in the F—F end view and the E—E end view is a flat portion 46.
- the thickness of the flat portion 46 in the F-F end view and the E-E end view is the same as the thickness of the flat portion 46 in the E-E end view (F-F end view) in Fig. 6. Is also getting smaller.
- the third bending portion 33 is more flexible than the first bending portion 31 and the second bending portion 32. As a result, even if the leading edge 12 of the guide wire enters the branch, it is reversed at the third curved portion 33 and advances through the main blood vessel, thereby preventing the branch wire from entering the branch.
- FIG. 10 is a cross-sectional view showing another embodiment of the guide wire of the present invention.
- FIG. 10 shows a mode in which the bending portion is made flexible.
- a groove 80 is provided on the surface of the covering portion 60 at least inside the curved portion in a direction substantially perpendicular to the axis. Groove 80 It is provided in the shape of a bowl.
- the groove 80 is provided on the surface of the curved portion.
- the groove 80 is provided around the entire surface of the covering portion 60 of the second bending portion 32 and the third bending portion 33 of FIG. 1, FIG. 2 or FIG.
- the groove 80 is provided only on the surface of the covering portion 60 of the curved portion. As shown in FIG.
- the longitudinal cross-sectional shape of the outer surface (outer peripheral surface) of the covering portion 60 is wavy.
- the wavy groove 80 can be obtained, for example, by winding the wire 70 around the covering portion 60 while leaving a gap corresponding to the outer diameter of the wire 70 and heating the wire 70.
- the groove 80 may have an annular shape in addition to the spiral shape.
- a slit shape may be used instead of the groove 80.
- the groove 80 may be provided only on the surface of the curved portion, for example, the covering portion 60 inside the second curved portion 32 and the third curved portion 33 in FIG. 1, FIG. 2 or FIG.
- the groove 80 or the slit substantially orthogonal to the axial direction is provided on the surface of the covering portion 60 at least inside the bending portion, the flexibility of the bending portion is increased. Bends easily.
- the guide wire of the present invention can be used to introduce a medical device such as a sheath or the like from radial, brachial or femoral to a target site such as a chest or abdomen.
- a medical device such as a sheath or the like from radial, brachial or femoral to a target site such as a chest or abdomen.
- the applicable range is not limited by the puncture site or the target site.
- a guide wire shown in FIG. 11 was produced.
- the guide wire had an outer diameter of 0.89 mm and an overall length of 1500 mm.
- the core wire constituting the guide wire is made of Ni-Ti, and the covering portion is made of polyurethane.
- the flat part was set to have a length of 4 mm, a width of 0.23 mm, and a thickness of 0.03 mm.
- the distance D is about 8.5 mm, and the distance E is about 13.5. mm.
- a guide wire shown in FIG. 12 was produced.
- the outer diameter, the total length, and the constituent materials of the guide wire were the same as in the previous example.
- a guide wire shown in FIG. 13 was produced.
- the outer diameter, the total length, and the constituent materials of the guide wire were the same as in the previous example.
- a guide wire shown in FIG. 14 was produced.
- the outer diameter, the total length, and the constituent materials of the guide wire were the same as in the previous example.
- a guide wire shown in FIG. 15 was manufactured.
- the outer diameter, the total length, and the constituent materials of the guide wire were the same as in the previous example.
- a guide wire shown in FIG. 16 was manufactured.
- the outer diameter, the total length, and the constituent materials of the guide wire were the same as in the previous example.
- the guidewires obtained in the examples and comparative examples were evaluated using the evaluation tools shown in FIG.
- This evaluation tool assumes a straight blood vessel and a side branch branched from the middle of the blood vessel.
- the “main tube” corresponds to the “straight blood vessel” and the “side tube” is “ Corresponds to "side branch”.
- the main and side pipes were made of polypropylene.
- the guide wire was inserted into the main pipe five times from the distal end side, and evaluation was made as to whether or not the distal end portion of the guide wire entered the side pipe even once.
- the evaluation criteria were as follows. Evaluation tools la to 5a having different main pipe inner diameter ⁇ dl and side pipe inner diameter ⁇ d2 were prepared and the above evaluation was performed. ⁇ : The tip of the guide wire did not penetrate the side tube at all
- Table 1 shows the evaluation results.
- This evaluation tool is a tool that assumes a curved blood vessel (Ulnar Loop) and a side branch that branches off when the central force of the curved portion of the blood vessel is also directed outward.
- a curved blood vessel Ulnar Loop
- side branch Corresponding to “blood vessel”, “side tube” corresponds to “side branch”.
- the main pipe and the side pipe were each made of polypropylene.
- evaluation tools lb to 5b having different inner diameter ⁇ dl of the main pipe and inner diameter ⁇ d2 of the side pipe were prepared, and the same evaluation as above was performed.
- the guidewires obtained in Examples and Comparative Examples were evaluated using catheters.
- the catheter has a flexible tubular catheter body and a gutter installed at the proximal end of the catheter body.
- the hub has a cylindrical shape and communicates with the catheter body.
- the inner diameter of the catheter body was ⁇ 05 mm, and the inner diameter of the hub inlet was ⁇ 4 mm.
- Table 3 shows the evaluation results.
- the tip end portion of the guide wire could be inserted into the knob all five times.
- the guide wire of the present invention is a guide wire that also has a distal end portion and a body portion force, and has a first curved portion and a distal end side of the first curved portion, and the first curved portion A second curved portion that curves in a direction opposite to the first curved portion, and a third curved portion that curves on the tip side of the second curved portion and curves in the direction opposite to the second curved portion.
- a line in contact with both the first curved portion and the third curved portion is an obtuse angle with respect to the axis of the main body portion. Therefore, it is excellent in operability when operating the guide wire. Therefore, the guide wire of the present invention has industrial applicability.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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JP2008505066A JP5028406B2 (ja) | 2006-03-06 | 2007-03-06 | ガイドワイヤ |
EP07715234.6A EP1992383B1 (en) | 2006-03-06 | 2007-03-06 | Guide wire |
CN2007800056240A CN101384293B (zh) | 2006-03-06 | 2007-03-06 | 导丝 |
US12/188,910 US8353849B2 (en) | 2006-03-06 | 2008-08-08 | Guide wire |
US13/617,439 US8708932B2 (en) | 2006-03-06 | 2012-09-14 | Guide wire |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2006059902 | 2006-03-06 | ||
JP2006-059902 | 2006-03-06 | ||
JP2006125809 | 2006-04-28 | ||
JP2006-125809 | 2006-04-28 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/188,910 Continuation US8353849B2 (en) | 2006-03-06 | 2008-08-08 | Guide wire |
Publications (1)
Publication Number | Publication Date |
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WO2007105531A1 true WO2007105531A1 (ja) | 2007-09-20 |
Family
ID=38509366
Family Applications (1)
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PCT/JP2007/054266 WO2007105531A1 (ja) | 2006-03-06 | 2007-03-06 | ガイドワイヤ |
Country Status (5)
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US (2) | US8353849B2 (ja) |
EP (1) | EP1992383B1 (ja) |
JP (2) | JP5028406B2 (ja) |
CN (2) | CN101384293B (ja) |
WO (1) | WO2007105531A1 (ja) |
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WO2011081134A1 (ja) * | 2009-12-28 | 2011-07-07 | テルモ株式会社 | ガイドワイヤ |
WO2011118443A1 (ja) * | 2010-03-26 | 2011-09-29 | テルモ株式会社 | ガイドワイヤ |
JP2012200290A (ja) * | 2011-03-23 | 2012-10-22 | Asahi Intecc Co Ltd | ガイドワイヤ |
EP2647405A1 (en) * | 2007-10-19 | 2013-10-09 | Pressure Products Medical Supplies, Inc. | Transseptal guidewire |
JP2019511270A (ja) * | 2016-03-16 | 2019-04-25 | セント ジュード メディカル コーディネイション センター ベーファウベーアー | 優先的な曲げを提供する平坦部を有するコアワイヤ |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2647405A1 (en) * | 2007-10-19 | 2013-10-09 | Pressure Products Medical Supplies, Inc. | Transseptal guidewire |
EP2668972A3 (en) * | 2007-10-19 | 2014-03-26 | Pressure Products Medical Supplies, Inc. | Transseptal Guidewire |
WO2011081134A1 (ja) * | 2009-12-28 | 2011-07-07 | テルモ株式会社 | ガイドワイヤ |
JP5451779B2 (ja) * | 2009-12-28 | 2014-03-26 | テルモ株式会社 | ガイドワイヤ |
WO2011118443A1 (ja) * | 2010-03-26 | 2011-09-29 | テルモ株式会社 | ガイドワイヤ |
JP5555310B2 (ja) * | 2010-03-26 | 2014-07-23 | テルモ株式会社 | ガイドワイヤ |
US8827928B2 (en) | 2010-03-26 | 2014-09-09 | Terumo Kabushiki Kaisha | Guide wire |
JP2012200290A (ja) * | 2011-03-23 | 2012-10-22 | Asahi Intecc Co Ltd | ガイドワイヤ |
JP2019511270A (ja) * | 2016-03-16 | 2019-04-25 | セント ジュード メディカル コーディネイション センター ベーファウベーアー | 優先的な曲げを提供する平坦部を有するコアワイヤ |
US10792473B2 (en) | 2016-03-16 | 2020-10-06 | St. Jude Medical Coordination Center Bvba | Core wire having a flattened portion to provide preferential bending |
Also Published As
Publication number | Publication date |
---|---|
EP1992383B1 (en) | 2020-04-22 |
JP5512716B2 (ja) | 2014-06-04 |
JP2012091070A (ja) | 2012-05-17 |
JPWO2007105531A1 (ja) | 2009-07-30 |
CN102688551A (zh) | 2012-09-26 |
EP1992383A4 (en) | 2009-04-08 |
EP1992383A1 (en) | 2008-11-19 |
US8708932B2 (en) | 2014-04-29 |
CN101384293B (zh) | 2013-04-24 |
US8353849B2 (en) | 2013-01-15 |
US20080306468A1 (en) | 2008-12-11 |
CN101384293A (zh) | 2009-03-11 |
JP5028406B2 (ja) | 2012-09-19 |
US20130012834A1 (en) | 2013-01-10 |
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