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Guide wire

A guide wire and core material technology, applied in the field of guide wire, can solve the problems of cumbersome core material connection operation, unable to obtain sufficient torque transmission, unable to improve the joint strength of two core materials, etc., to achieve high joint strength and ensure flexibility. and operational effects

Active Publication Date: 2012-09-12
TERUMO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The above-mentioned guide wire can be provided with core materials having desired characteristics on the front end side and the proximal end side respectively. However, since the two core materials are connected through a tubular connecting member, the joint strength of the two core materials cannot be improved, and sufficient rotation cannot be obtained. The problem of moment transitivity
In addition, there are also manufacturing problems such as the connection operation of the core material is cumbersome.

Method used

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Embodiment Construction

[0048] Hereinafter, the guide wire of the present invention will be described in detail based on preferred embodiments shown in the drawings.

[0049] figure 1 To represent the longitudinal section of the embodiment of the guide wire of the present invention, figure 2 It is an enlarged longitudinal sectional view showing the vicinity of the junction of the core body in the guide wire of the present invention. It should be noted that for the convenience of explanation, the figure 1 and figure 2 The right side is called the "base end" and the left side is called the "front end". In addition, in figure 1 In , for ease of viewing, the length direction of the guide line is shortened, the width direction of the guide line is exaggerated, and the guide line is schematically shown, and the ratio of the length direction to the width direction is different from the actual size.

[0050] figure 1 The guide wire 1 shown is a guide wire for a catheter that can be inserted into a ca...

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Abstract

The present invention provides a guide wire which has a wire body. The wire body is composed of a first wire which is disposed at a distal end thereof and a second wire. The second wire is jointed to a proxial end of the first wire. The invention is characterized in that the outer diameter of the wire body at the joint is larger than the outer diameter of the parts at the proxial end and the distal end of the joint.

Description

[0001] This application is a divisional application of an application with a filing date of November 12, 2004, an application number of 200410090385.1, and an invention title of "guiding line". technical field [0002] The present invention relates to a guide wire, in particular to a guide wire used when a catheter is introduced into a body cavity such as a blood vessel. Background technique [0003] Guide wires are used to introduce treatments such as PTCA (Percutaneous Transluminal Coronary Angioplasty: Percutaneous Transluminal Coronary Angioplasty) in difficult-to-operate areas, or for treatments aimed at reducing invasiveness to the human body, or for examinations such as cardiovascular angiography Catheters used in . The guide wire used in PTCA is inserted into the vicinity of the narrowed part of the blood vessel as the target site together with the balloon catheter in a state where the tip of the guide wire protrudes from the tip of the balloon catheter, and the tip ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M25/09A61M25/01
Inventor 三岛克朗伊藤丰村山启佐藤英雄
Owner TERUMO KK