Guiding wire

A guide wire and core core technology, applied in the field of medical devices, can solve the problems of easy discount or breakage, easy damage to human tissue, cumbersome processing and production, etc., to achieve the effect of ensuring propulsion and good guide wire controllability

Inactive Publication Date: 2009-08-12
BEIJING TARGET TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are two connection methods that can realize the connection of two core cores: using tubular connecting parts at the joint and direct welding. Combined with the problem of low strength, the transmission of torque control is not good, and the required torque control cannot be guaranteed, and the tubular connecting parts are expensive, and the processing and production are cumbersome

Method used

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Examples

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Embodiment Construction

[0029] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0030] figure 1 and Figure 5 is the front view of two implementations of the guide wire of the present invention; Figure 4 , Figure 8 It is a partial enlarged view of two corresponding implementation modes respectively; figure 2 , image 3 is to press the guiding wire of the present invention figure 1 Cross-sectional view of line 2-2, 3-3; Figure 6 , Figure 7 is to press the guiding wire of the present invention Figure 5 The cross-sectional diagram of lines 6-6 and 7-7 in the middle. For the convenience of explanation, figure 1 , Figure 4 , Figure 5 and Figure 8 The right side is "distal end" and the left side is "near end".

[0031] Figures 1 to 3 The shown guide wire 10 has a guide wire core 11 and a helical spring coil 14, the guide wire core 11 is divided into a proximal end 12 and a distal end 13, and the ...

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PUM

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Abstract

The invention relates to a guiding wire comprising a guiding wire core (11) which consists of an inner core (18) and an outer layer (19), and an spring jacket; the inner core (18) is composed of alloy materials with great elasticity and the outer layer (19) coating the inner core (18) is composed of metal or alloy with high rigidity or a mixed material of the metal and alloy, and the inner core (18) is coaxial with the outer layer (19) thereof; the spring jacket is internally inserted with part of the guiding wire core (11). The interventional therapy guiding wire of the invention not only uses the high elasticity of the alloy material with great elasticity to entitle the guiding wire head end with softness and restoration properties, but also uses metal with high rigidity and alloy material with higher strength and rigidity to ensure the pushing property and relevant spiral-pressing property of the guiding wire, thus leading to good controllability of the guiding wire.

Description

technical field [0001] The invention relates to a medical guide wire for minimally invasive treatment, which is used for guiding and positioning various interventional medical catheters and implanted instruments into human organs, and belongs to the technical field of medical instruments. Background technique [0002] At present, the main method for treating coronary heart disease is percutaneous coronary intervention (PCI). The guide wire used in coronary intervention requires a certain degree of controllability, flexibility and recovery when entering tortuous blood vessels, propulsion of distal movement due to proximal operation, and corresponding twist control, etc. [0003] According to the core material selection, traditional coronary guidewires can be divided into one core core type and two core core type. One core type, for example, the entire core of the guide wire is made of 304 stainless steel. This type of guide wire has good torsion control, but when the operabi...

Claims

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Application Information

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IPC IPC(8): A61M25/09A61B17/00A61L31/02A61L31/12A61L31/14
CPCA61M2025/09175A61M2025/09083A61M2025/09133A61M25/09
Inventor 杨永森张田宏刘万兵
Owner BEIJING TARGET TECH
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