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Stent delivery system

A delivery system and tube stent technology, applied in the field of stent delivery systems, can solve the problems of not being able to pull back the stent, and having to pull out the stent once and re-operate if it is wrong, so as to achieve the effect of simple structure.

Inactive Publication Date: 2012-11-28
GADELIUS MEDICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing tube stents can only be pushed by the push catheter and cannot be pulled back. If the positioning of the stent is wrong, the stent has to be pulled out once and operated again

Method used

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  • Stent delivery system
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Examples

Experimental program
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Embodiment Construction

[0043] Below, refer to Figure 1-6 The embodiment of the present invention will be described. However, the present invention is not limited to this embodiment. In addition, in some drawings, the convex body is exaggerated for the convenience of explanation. In fact, the convex body and the hanging hole form a clearance fit, and as long as it is a size that can maintain the clearance fit state with the inner tube, it is inserted When there is an inner catheter, the convex body does not enter the stent or push the size inside the catheter.

[0044] figure 1 The stent group 10 has a propelling catheter 12, a stent delivery system (hereinafter referred to as a “delivery system”) 20 according to the first embodiment of the present invention, a stent 30, and an inner catheter 40. The advancing catheter 12 has a hole 16 for installing a filament 24 at the end, and the stent 30 has a flap 32 and a hanging hole 34. The hook hole 34 is formed larger than the convex body 22 so as to be a...

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PUM

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Abstract

An object of the present invention is to provide a stent delivery system with a simple structure, in which a stent and a catheter are not inadvertently uncoupled and can be easily uncoupled as intended. A stent delivery system has a pusher catheter having an opening to which a filament is tied to the distal end thereof, and a stent having a catching hole. Because a knot is loosely fit in the catching hole from inside, with an inner catheter supporting the loose-fitting, inadvertent uncoupling of the stent and the pusher catheter can be prevented until the inner catheter is pulled out, and the two can be easily uncoupled by pulling out the inner catheter.

Description

Technical field [0001] The present invention relates to a stent delivery system using a catheter, in particular to a stent delivery system using polyethylene or plastic tube stents (hereinafter referred to as "stents"). Background technique [0002] Stents used in stent implantation are roughly classified into tube stents made of polyethylene or plastic, and metal stents made of metal. Tube stents include various types of stents with or without side holes, flaps or without flaps, straight tube, curved, and curly tail stents. [0003] The tube stent is pushed by the propelling catheter along the guide wire or inner catheter inserted in the human body to advance in the human body. The existing tube stent can only be pushed by the pushing catheter and cannot be pulled back. If the positioning of the stent is wrong, the stent has to be pulled out once and operated again. Therefore, a delivery system capable of retracting the stent has been developed, as an example of which is shown b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/84A61F2/95A61M29/00
CPCA61F2002/041A61F2002/9511A61F2/95
Inventor 大熊畅昭
Owner GADELIUS MEDICAL
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