Unlock instant, AI-driven research and patent intelligence for your innovation.

Guide wire and catheter assembly

A catheter body and guide wire technology, which is applied in catheters, guide wires, medical science, etc., can solve the problems of difficult to identify lesions and inability to photograph blood vessel walls.

Active Publication Date: 2015-02-11
TERUMO KK
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, in the catheter described in Patent Document 1, the guide wire inserted into the guide wire insertion portion is a conventionally existing guide wire having a metal core wire. Figure 10 As shown, in the case of optical image acquisition as described above, the light is blocked by the guide wire, resulting in a shadow caused by the guide wire in the image, the so-called "back shadow".
Therefore, the part of the image where the back shadow is generated becomes a blind spot, and the blood vessel wall cannot be photographed.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Guide wire and catheter assembly
  • Guide wire and catheter assembly
  • Guide wire and catheter assembly

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0039] figure 1 is a side view showing the catheter assembly of the present invention, figure 2 and image 3 are shown in sequence figure 1 A partial longitudinal sectional view of the shown catheter assembly in use, Figure 4 It is a side view showing the first embodiment of the guide wire of the present invention, Figure 5 ~ Figure 7 are shown in sequence Figure 4 A longitudinal sectional view of the manufacturing method of the guidewire shown, Figure 9 is to use figure 1 Schematic representation of the vessel wall captured by the catheter assembly shown. In addition, in the following, for the convenience of explanation, the Figure 1 to Figure 7 middle( Figure 8 Also, the right side of ) is called "basal end", and the left side is called "front end". In addition, in Figure 4 ~ Figure 7 ( Figure 8 In the same way), the longitudinal direction of the guide wire is shortened and the thickness direction of the guide wire is exaggerated for ease of observatio...

no. 2 approach

[0093] Figure 8 It is a longitudinal sectional view showing a second embodiment of the guide wire of the present invention.

[0094] Hereinafter, a second embodiment of the guide wire and catheter assembly 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.

[0095] This embodiment is the same as the above-mentioned first embodiment except that the shapes of the connecting parts of the first wire and the second wire are different from the above-mentioned first embodiment.

[0096] Such as Figure 8 As shown, on the connection portion 711 of the first wire 7, an enlarged diameter portion 712 with an enlarged outer diameter is formed in the middle of the length direction thereof. In addition, similarly to this, an enlarged diameter portion 812 whose outer diameter is enlarged is also formed on the connecting port...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A guide wire includes an elongated main body possessing flexibility. The main boy is comprised of a first wire having a core member constituted by a metal material, a second wire having a core member arranged on the proximal side of the first wire and constituted by a metal material, and an optically transmissive member arranged between the first wire and the second wire, and connecting the first and second wires to each other and constituted by a substantially transparent tube shaped body. The optically transmissive member exhibits light permeability such that when light is illuminated from one direction of a lateral side thereof, the light is transmissible to the opposite side through the center axis of the main body.

Description

technical field [0001] The invention relates to a guide wire and a catheter assembly with the guide wire. Background technique [0002] There is known a catheter for inserting into a lumen of a living body such as a blood vessel to diagnose the lumen by ultrasonic waves (for example, refer to Patent Document 1). [0003] The catheter described in Patent Document 1 includes: a catheter body having a lumen; a tubular guidewire insertion portion provided at the front end of the catheter body for insertion of the guidewire; a shaft inserted into the lumen of the catheter body, and An ultrasonic vibrating part that emits ultrasonic waves is provided at the front end. In this catheter, the shaft inserted into the lumen of the catheter main body is rotated about its axis while the guide wire is inserted into the guide wire insertion portion, and moved in the proximal direction, thereby obtaining an ultrasonic image of the blood vessel wall. [0004] In addition, in the catheter d...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): A61B1/00A61M25/01
CPCA61B1/00087A61B1/00071A61B1/01A61M2025/09133A61M25/09A61B1/00163
Inventor 丸山智司
Owner TERUMO KK