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Marker and stent

A marker and turn-back technology, applied in stents, medical science, prostheses, etc., can solve the problems of complicated workability, difficulty in gold plating or pasting gold foil, and rising costs.

Active Publication Date: 2012-02-01
MATSUTANI SEISAKUSHO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is not easy to apply gold plating or paste gold leaf to a part of the main line of the stent or a part of the pillar.
[0008] That is, although the diameter of the main wire of the stent and the diameter of the struts are different from each other, they are usually about 0.6 mm. The operation of plating or attaching gold leaf to such a thin wire is an extremely delicate operation, which is complicated and has a problem of low workability.
[0009] In addition, in order to improve the workability, it is not preferable to apply gold plating or paste gold foil to the entire bracket or the entire support, which will increase the cost and increase the possibility of peeling.

Method used

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  • Marker and stent
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  • Marker and stent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Next, the structure of the marker and the stent provided with the marker according to the first embodiment will be described using the drawings. figure 1 It is a figure explaining the structure of the marker concerning 1st Example. figure 2 It is a figure explaining the structure of a bracket.

[0062] First, use figure 2 The overall structure of the bracket C will be described. The stent C is constructed by connecting a plurality (five in this embodiment) of ring stents D formed by forming the stent main wire 1 in a zigzag shape and welding the ends via struts 2 .

[0063] For the stent main wire 1 constituting the ring stent D, a wire material of SUS316L, which is generally provided as austenitic stainless steel, especially stainless steel for transplantation, is used. In addition, the wire rod is cold-drawn to elongate the structure into a fibrous shape, whereby the wire rod is work-hardened and mechanical properties are improved. By constituting the ring stent...

Embodiment 2

[0081] Next, the structure of the marker according to the second embodiment will be described using the drawings. image 3 It is a figure explaining the structure of the marker B concerning 2nd Example.

[0082] The marker B involved in this embodiment is constituted by fastening the tube 11 embedded in two stent main wires that are close to each other at the foldback portion E of the straddling stent D. In addition, the tube 11 used in this Example is comprised using SUS316L as a material similarly to the said Example.

[0083] image 3The shown pipe 11 is fitted to the two stent main wires 1 that are close to the ring stent D at the foldback portion E from the outside of the ring stent D across the two stent main wires 1 . In addition, the tube 11 is fastened at a position corresponding to the parallel portion 1b of the two stent main wires 1 at the folded portion E, thereby constituting the marker B.

[0084] The marker B as described above is configured by fastening the...

Embodiment 3

[0094] Next, the structure of the marker B according to the third embodiment will be described using the drawings. Figure 4 It is a figure explaining the marker provided in the attachment part of the stabilizer hook arrange|positioned at the front-end|tip part of a bracket. In addition, in this Example, the hook 4 for stabilizers is used instead of the support|pillar 2, The structure is the same as the said 2nd Example other than that. Therefore, the same reference numerals are assigned to the same parts as those in the second embodiment, and description thereof will be omitted.

[0095] The stabilizer hook 4 is arranged at the front end of the stent C, and is used to engage with the periphery of the target affected area when the stent C is placed on the target affected area. The stabilizer hook 4 does not act on the force of the strut 2 described above, so its diameter (about 0.45 mm) is the same as or smaller than the diameter of the stent main wire 1 .

[0096] In additi...

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PUM

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Abstract

A marker formed on a stent which is to be mounted within a human body, the marker being formed without applying gold plating or gold foil onto the stent and allowing the position of the stent in the human body to be confirmed by a recognition means. A marker (A, B) used to confirm the position in a human body of a stent (C) consisting of wires is formed by fitting pipes (10-12), which consist of a raw material which can be recognized by a recognition means, on a portion at which at least two wires constituting the stent (C) are located close to each other. The stent (C) comprises a stent main wire (1) formed in a zigzag pattern, and the pipes (10-12) are fitted to zigzag-shaped turn-back sections (E) of the stent main wire (1).

Description

technical field [0001] The present invention relates to a marker useful for confirming the position of the stent in the body by using an identification mechanism including, for example, an X-ray imaging device during indwelling a stent in a human body, and a stent provided with the marker. Background technique [0002] For example, when treating an aneurysm, a stent graft in which a cylindrical device called a stent is covered with a graft is often used. The stent-graft is housed in a sheath in a reduced-diameter state and delivered to the affected area, and is detached from the sheath at the affected area to be treated and left there with an enlarged diameter. Therefore, blood flows inside the stent graft left inside the aneurysm, and it is possible to prevent the pressure of the blood from acting on the aneurysm. [0003] When placing the stent graft on the affected part, it is necessary to accurately set the position. Therefore, during the operation, the sheath is broug...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/82A61F2/07A61F2/89
CPCA61F2250/0098A61F2/89A61F2/86A61F2220/0008
Inventor 横井良彦桥本泰志斋藤辉
Owner MATSUTANI SEISAKUSHO CO LTD
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