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Catheter

A catheter and outer tube technology, which is applied in the direction of catheters, balloon catheters, hollow probes, etc., can solve the problems of catheter discounts and insufficient rigidity of catheters, and achieve the effect of reducing midway discounts and improving joint strength

Active Publication Date: 2015-08-26
ASAHI INTECC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the diameter of the reinforcing body is reduced, the rigidity of the catheter in the longitudinal direction is insufficient, and when the operator presses in toward the tip, there is a problem that the catheter is folded halfway.

Method used

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Examples

Experimental program
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Embodiment Construction

[0043] see Figure 1 to Figure 2(D) , using the catheter 10 of this embodiment as an example for description. exist figure 1 In the diagram, the left side of the illustration is the distal end (distal side) inserted into the body, and the right side is the rear end side (proximal side, proximal side) operated by an operator such as a doctor.

[0044] Catheter 10 is used to treat, for example, narrowed portions formed in blood vessels or digestive tracts. Such as figure 1 As shown, the catheter 10 is mainly composed of an outer tube 30 , a first inner tube 50 , a second inner tube 60 , a reinforcing body 70 , a metal tube 80 , and a connector 90 .

[0045] The first inner tube 50 is inserted into the outer tube 30 through the entire length of the catheter 10 . Other medical devices such as guide wires or microcatheters may be inserted into the first inner tube 50 . In order to facilitate the insertion of other devices, a connector 90 is connected to the rear end of the out...

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PUM

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Abstract

[Problem to be Solved] To provide a catheter that can efficiently transmit a pressing force, which is applied by an operator, to the front end of the catheter without being broken at a midpoint of the catheter. [Solution] In a catheter 10, an upper second wall 84 of a metal tube 80 is not provided, a lower first wall 82 is bent to the second wall 84, and the rear end 70 of the reinforcing member is joined to the outer peripheral surface of the curved first wall 82. Thus, the reinforcing member 70 increased in diameter at least by a thickness X2 of the second wall 84 can be disposed in the catheter 10 without increasing the diameter of an outer tube 30.

Description

technical field [0001] The invention relates to a catheter. When an operator presses the catheter toward the tip of the catheter, the catheter will not be folded halfway, and the pushing force of the operator can be effectively transmitted to the tip. Background technique [0002] Conventionally, when treating narrow sites such as blood vessels and digestive tracts, a treatment method using a catheter has been widely practiced. In order for the catheter to reach the stenosis, it is necessary to efficiently transmit the operator's pushing force toward the distal end to the distal end of the catheter. [0003] As a method thereof, it is known to provide a reinforcing body (core wire) in the longitudinal direction between the outer tube and the inner tube of the catheter (for example, refer to Patent Document 1). However, the catheter in Patent Document 1 has only a reinforcing body inserted in the longitudinal direction, so the rigidity is insufficient, and there is a problem...

Claims

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Application Information

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IPC IPC(8): A61M25/10
CPCA61M25/0026A61M25/10A61M2025/0059A61M25/0102A61M25/0029A61M25/0052
Inventor 西岸诚
Owner ASAHI INTECC CO LTD