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Guide wire

A technology of guide wires and linear parts, which is applied in the field of guide wires and can solve the problems of poor operability of guide wires

Active Publication Date: 2010-12-15
TERUMO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As described above, the guide wire described in Patent Document 1 is poor in operability.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0058] figure 1 It is a partial longitudinal sectional view showing the first embodiment of the guide wire of the present invention; figure 2 for figure 1 The longitudinal section of the area [A] surrounded by dotted lines in ; image 3 for figure 1 A perspective view of the markers in the guideline shown; Figure 4 for image 3 B-B line sectional view in ; Figure 5 to express figure 1 Diagram of the marker change process as the guideline shown rotates around its axis; Figure 6 to express figure 1 A plot of the marker change process as the guideline is shown moving along its axis. It should be noted that, for the convenience of explanation, the following figure 1 , figure 2 , Figure 5 and Figure 6 middle( Figure 7 , Figure 8 The same is true in ), the right side is called "basal end", and the left side is called "front end". Also, for ease of understanding, in figure 1 In , the length direction of the guide line is shortened, and the width directio...

no. 2 Embodiment approach

[0167] Figure 7 It is a side view showing a second embodiment of the guide wire of the present invention.

[0168] Hereinafter, the second embodiment of the guide wire of the present invention will be described with reference to this figure, but the description will focus on the differences from the above-mentioned embodiment, and the description of the same matters will be omitted.

[0169] This embodiment is the same as the above-mentioned first embodiment except that the formation state (formation condition) of the first linear portion and the second linear portion is different.

[0170] exist Figure 7 In the marker 12A of the guide wire 1A shown, the magnitude of the helical pitch of the first linear portion 121 and the helical pitch of the second linear portion 122 are different from each other. In the illustrated configuration, the helical pitch of the second linear portion 122 is set to be smaller than the helical pitch of the first linear portion 121 .

[0171] Th...

no. 3 Embodiment approach

[0175] Figure 8 It is a side view showing a third embodiment of the guide wire of the present invention.

[0176] Hereinafter, a third embodiment of the guide wire of the present invention will be described with reference to this figure, but the description will focus on the differences from the above-mentioned embodiment, and the description of the same items will be omitted.

[0177] This embodiment is the same as the above-mentioned first embodiment except that the formation state (formation condition) of the first linear portion and the second linear portion is different.

[0178] exist Figure 8 In the mark 12B of the guide wire 1B shown, the respective widths of the first linear portion 121 and the second linear portion 122 gradually decrease toward the distal end direction. The portion where the width decreases (decreasing width portion) is preferably formed in the tapered portion 34 of the core body 2 . By confirming the above-mentioned portion, it can be grasped t...

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PUM

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Abstract

Provided is a guide wire, which comprises a lengthy wire body, and a marker disposed in at least the tip side portion of the wire body all over the circumference and having a function to indicate the position of the wire body in a living body. The marker is formed into a lattice shape as a whole by causing a first filament portion and a second filament portion to intersect with each other at a plurality of portions. Moreover, the intersecting portions of the first filament portion and the second filament portion are formed in plurality in the marker. Noting a predetermined one of those intersecting portions, therefore, the predetermined intersecting portion looks, as if it moves radially of the guide wire, when the guide wire is turned on its axis. Thus, it is possible to confirm reliablythat the guide wire has been turned.

Description

technical field [0001] The invention relates to a guide wire. Background technique [0002] When a catheter is inserted into a lumen of a living body such as a digestive tract or a blood vessel, a guide wire may be used to guide the catheter to a target site in the lumen of a living body. This guide wire is inserted into the catheter for use. [0003] In addition, endoscopes are also used to observe and treat living body lumens, etc. In order to guide the endoscope and the catheter inserted into the endoscope lumen to target sites such as living body lumens, a guide can also be used. Wire. [0004] When inserting the guide wire, the guide wire is moved along its axis and rotated around the axis. Since such an operation is performed while visually confirming the guide wire under X-ray fluoroscopy or through an endoscope, if the guide wire is monochromatic, it is impossible to know whether the guide wire is reliably displaced according to each operation ( move). Therefore...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/01
CPCA61M2025/09083A61M2025/09166A61M2025/0008A61M25/09
Inventor 木下康香西正小林淳一
Owner TERUMO KK
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