Synthetic resin stent and stent delivery system

A technology of synthetic resin and constituent parts, applied in stents, medical science, prostheses, etc., can solve problems such as inability to exert performance and poor followability

Pending Publication Date: 2021-11-05
JMS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since synthetic resin stents are inferior to metal stents in terms of self-expandability, restoration, adhesion to digestive tracts such as the intestinal tract, and followability to peristaltic movements of digestive tracts, synthetic resin stents are produced in the same shape as metal stents. In the case of a resin bracket, the required performance may not be exhibited

Method used

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  • Synthetic resin stent and stent delivery system
  • Synthetic resin stent and stent delivery system
  • Synthetic resin stent and stent delivery system

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Experimental program
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Effect test

no. 1 approach

[0048] Hereinafter, a preferred first embodiment of the synthetic resin stent of the present invention will be described with reference to the drawings. figure 1 It is a perspective view showing the biodegradable stent 1 according to the first embodiment of the present invention. figure 2 It is a perspective view showing the inner bracket 2 of the first embodiment. image 3 It is a perspective view showing the outer bracket 5 of the first embodiment. In addition, in the description of this embodiment, the direction in which the biodegradable stent 1 extends as a whole is referred to as the longitudinal direction X, and the direction perpendicular to the longitudinal direction X and figure 1 The up-and-down direction in is called the first direction D1, and the direction perpendicular to the longitudinal direction X and the first direction D1 is called the second direction D2.

[0049] The synthetic resin stent of this embodiment is a biodegradable stent 1 made of biodegrada...

no. 2 approach

[0098] Next, a second embodiment of the present invention will be described. Figure 4 It is a perspective view showing the biodegradable stent 10 of the second embodiment. The biodegradable stent 10 of the second embodiment mainly differs in the structures of the inner stent 6 and the outer stent 11 .

[0099] The synthetic resin scaffold of the second embodiment is a biodegradable scaffold 10 made of biodegradable fibers, such as Figure 4 As shown, an inner frame 6 (first frame) and an outer frame 11 (second frame) disposed outside the inner frame 6 are provided. A central portion of the inner bracket 6 in the longitudinal direction X (axial direction) is disposed inside the outer bracket 11 . In the second embodiment, descriptions of the configurations described in the first embodiment are omitted.

[0100] Like the biodegradable stent 1 of the first embodiment, the biodegradable stent 10 of the second embodiment includes an inner stent 6 and an outer stent 11. The inne...

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PUM

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Abstract

Provided is a synthetic resin stent able to demonstrate self-extensibility, restorability, adhesion to the digestive tract, and ability to follow peristaltic movement. A synthetic resin stent (1) is provided with: a first stent (2) that has a first stent body (3) formed as a cylindrical mesh from fibers made of synthetic resin, and that can be deformed from a reduced-diameter state to an expanded-diameter state; and a second stent (5) that is formed as a cylindrical mesh which is finer than that of the first stent body (3), is arranged so as to cover the outer periphery of the first stent body (3), and can be deformed from a reduced-diameter state to an expanded-diameter state.

Description

technical field [0001] The present invention relates to a synthetic resin stent such as a biodegradable stent and a stent delivery system. Background technique [0002] Conventionally, for stenotic diseases (tumor, inflammation, etc.) of living ducts such as blood vessels and digestive tracts, a stent is placed in the stenosis to dilate the stenosis. As the holder, for example, metal and synthetic resin holders are known. Among them, a metal stent requires a surgical operation when it is pulled out from the body, and thus imposes a great burden on the patient. Therefore, the use of metal stents is limited to cases such as malignant tumors where semi-permanent placement or surgery is planned. From such a background, biodegradable stents, which are synthetic resin stents, have been proposed as stents for cases where metal stents cannot be used. [0003] Since synthetic resin stents are inferior to metal stents in terms of self-expandability, restoration, adhesion to digesti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/848A61F2/852A61F2/89A61F2/90A61F2/966
CPCA61F2/848A61F2/90A61F2002/8486A61F2250/0039A61F2210/0076A61F2/966A61F2/915A61F2002/91575A61F2/852A61F2002/0081A61F2250/001A61F2250/0026
Inventor 井手纯一福泷修司西原爱美
Owner JMS CO LTD
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