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A technology of supporting part and main body, applied in the field of stents, can solve problems such as dislocation, and achieve the effect of suppressing dislocation and easy diameter reduction

Inactive Publication Date: 2020-08-11
PIOLAX MEDICAL DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, the positioning of the stent remains in the affected part of the body tissue, and sometimes it will be misplaced

Method used

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Embodiment Construction

[0028] Below, refer to Figure 1 to Figure 8 A first embodiment of the stent according to the present invention will be described.

[0029] like figure 1 and figure 2 As shown, the stent 10 of this embodiment has a stent main body 11 formed in a substantially cylindrical shape. The stent main body 11 is provided with a plurality of mesh-shaped openings 13 and is open at both ends in the axial direction.

[0030] The stent main body 11 has: a plurality of supporting parts 20, 22, 24 formed of wires extending in the circumferential direction in a predetermined pattern and arranged at predetermined intervals in the axial direction; and a plurality of connecting parts 30, 32 composed of It is comprised of the wire material which connects the adjacent support part mutually in the axial direction.

[0031] Each support part 20, 22, 24 in this embodiment bends the metal wire rod in a zigzag shape so as to have a bending part 25 composed of a protruding part and a recessed part, a...

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PUM

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Abstract

Provided is a stent that is less susceptible to position displacement when placed in a body and easily recovered from inside a body. This stent 10 comprises a stent body 11 having a plurality of strut parts 20, 22, 24 consisting of predetermined patterns and a plurality of coupling parts 30, 32 that couple adjacent strut parts to each other, and a cover member 15 that covers the stent body 11, wherein the stent body 11 has a small diameter part 40 and large diameter parts 60, 60 disposed via a sloped part 50 at at least one end side of the small diameter part 40 in the axial direction, and only the coupling part 32, which couples the strut part 22 positioned closest to the sloped part among the strut parts disposed in the small diameter part 40 and the strut part 24 disposed in the large diameter part 60 and positioned closest to the sloped part, is present in the sloped part 50.

Description

technical field [0001] The present invention relates to a stent placed in tubular organs such as bile duct, urinary duct, trachea, and blood vessel, body cavity, and other tissues in the body. Background technique [0002] Currently, treatment using a stent is performed by indwelling a stent in a narrowed portion or blocked portion formed in a tubular organ such as a bile duct, a urinary tract, a trachea, a blood vessel, and an esophagus, or a body cavity, and dilating the narrowed portion or blocked portion. To make bile, blood, etc. flow easily, or to indwell a stent at the site of an aneurysm to prevent its rupture, etc. As such a stent, for example, a so-called laser-cut structure is known in which a plurality of supports extending circumferentially in a zigzag pattern are connected by bridges in the axial direction. [0003] In addition, the positioning of the stent is placed on the affected part of the tissue in the body, and sometimes it will be misplaced. Therefore...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/915A61F2/04A61F2/07
CPCA61F2/04A61F2/07A61F2/915
Inventor 丰川秀英
Owner PIOLAX MEDICAL DEVICES