KR20160050819A - Endoscope Guide Stent - Google Patents

Endoscope Guide Stent Download PDF

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Publication number
KR20160050819A
KR20160050819A KR1020140149876A KR20140149876A KR20160050819A KR 20160050819 A KR20160050819 A KR 20160050819A KR 1020140149876 A KR1020140149876 A KR 1020140149876A KR 20140149876 A KR20140149876 A KR 20140149876A KR 20160050819 A KR20160050819 A KR 20160050819A
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KR
South Korea
Prior art keywords
endoscope
diameter
body part
body unit
unit
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KR1020140149876A
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Korean (ko)
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KR101651148B1 (en
Inventor
아츠시 미나미
김은진
박헌국
장봉석
호 윤
김선종
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주식회사 엠아이텍
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Priority to KR1020140149876A priority Critical patent/KR101651148B1/en
Publication of KR20160050819A publication Critical patent/KR20160050819A/en
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Publication of KR101651148B1 publication Critical patent/KR101651148B1/en

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Abstract

The purpose of the present invention is to provide a technology to guide the movement of an endoscope to a position desired by an operator in an inner cavity formed as a diameter in which the endoscope is hard to move in inner cavities having different diameters in the body. The present invention relates to an endoscope guide stent. The endoscope guide comprises: a first body unit having a hollow cylindrical shape and a second body unit having a hollow cylindrical shape having a different diameter from the diameter of the first body unit at one end of the first body unit. Further, the first body unit further comprises a moving prevention unit to prevent the slip of the first body unit by being formed with an expanded diameter than the diameter of the first body unit at the other end of the first body unit. Herein, the moving prevention unit is formed to have an increased diameter when the moving prevention unit moves from the other end of the first body unit in the direction of an end unit. Accordingly, the endoscope guide stent can guide a moving path of surgical instruments such as the endoscope and the like by locating the first body unit and the second body unit, which have a different diameter, on inner cavities having different diameters in the body.

Description

[0001] The present invention relates to an endoscope guide stent,

The present invention relates to an endoscopic inner stent.

Recently, in the intraperitoneal surgery, the incision is made in the abdomen rather than the abdomen and the endoscope is inserted into the abdomen or the endoscope is inserted through the opening in the body, have.

Accordingly, when inserting an endoscope for surgery, a device for guiding the path of the endoscope to move the endoscope to a target surgical position to the operation site is required. Prior art documents for such an apparatus include Korean Patent Laid- 2014-0037670 "(hereinafter referred to as " prior art ").

In this conventional technique, the distance between the endoscope and the tissue is guided by measuring the distance between the endoscope and the tissue based on the optical interferometer. The distance between the accurately calculated endoscope and the tissue reduces the tissue damage and the operation time .

However, the prior art is a device for guiding only the endoscopic movement in the lumen where the diameter is formed within a certain range in which the endoscope can move, and it is premised on the distance measurement in the space where the endoscope can move.

In addition, the practitioner directly confirms the distance between the endoscope and the tissue measured based on the optical interferometer. There has been a problem that the tissue is damaged due to unintentional contact that may be caused by hand shake of the operator or unexpected contraction and relaxation of the internal organs.

It is an object of the present invention to provide a method and apparatus for endoscopically moving an endoscope through a lumen formed by diameters different from each other in a body, To the user.

According to an aspect of the present invention, there is provided an endoscopic internal stent comprising: a first body portion having a hollow cylindrical shape; And a second body part having a hollow cylindrical shape with a diameter different from the diameter of the first body part at one end of the first body part.

Here, the first body portion may have different sizes of spaces formed by the crossing of the metal wires constituting the first body portion, and the first body portion may have flexural deformability.

The first body part may have a diameter larger than a diameter of the first body part at the other end of the first body part to prevent slipping of the first body part.

Here, the movement preventing portion is formed to have a larger diameter toward the direction of the end portion from the other end of the first body portion.

According to the present invention, the endoscopic inner stent is expanded and installed not only in the lumen of a diameter that facilitates the movement of the endoscope but also in the lumen of the diameter in which the endoscope can not be easily moved, the first body part and the second body part, , It is possible to secure a moving passage in the lumen which is difficult to enter the endoscope and to reduce the tissue damage due to the contact which may occur during the endoscope moving process.

1 is a perspective view showing an installation state of an endoscope inner stent according to a first embodiment of the present invention.
2 is a perspective view showing an installed state of the endoscope inner stent according to the first embodiment of the present invention and a moving state of the endoscope.
3 is a cross-sectional view showing an installation state of the endoscope inner stent according to the first embodiment of the present invention and a movement state of the endoscope.
4 is a perspective view showing an installation state of an endoscope inner stent according to a second embodiment of the present invention.
5 is a perspective view showing an installation state of the endoscope inner stent according to the second embodiment of the present invention and a moving state of the endoscope.
FIG. 6 is a cross-sectional view showing an installation state of the endoscope inner stent according to the second embodiment of the present invention and a movement state of the endoscope.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention will be described more specifically with reference to the accompanying drawings, in which the technical parts already known will be omitted or compressed for the sake of explanation.

1. Description of the components of the stent in the endoscope

1, 2 and 3, the endoscopic intravascular stent 100 of the present invention includes a first body part 110 and a second body part 120; .

The first body portion 110 has a hollow cylindrical shape.

The second body part 110 has a hollow cylindrical shape with a diameter different from the diameter of the first body part 110 at one end of the first body part 120.

Here, the first body part 110 and the second body part 120 are located in the lumens of the internal organs having different diameters, respectively.

The first body portion 110 includes a movement preventing portion 130 formed at the other end with a diameter larger than the diameter of the first body portion 110 to prevent slipping of the first body portion 110 .

Here, the movement preventing part 130 is formed to have a larger diameter in the direction from the other end of the first body part 110 to the end part thereof.

In addition, each of the units 110, 120, and 130 may be formed into a mesh shape by crossing metal wires.

Also, the first body part 110 is different in the size of the space formed by the intersection of the metal wires constituting the first body part 110, thereby adding a difference in denseness, and thus has a flexural deformability .

Here, since the first body part 110 having bending deformability may be bent by an external force, the first body part 110 and the second body part 120 may have different orientations so that they may be positioned in different lumens do.

In addition, the endoscopic inner stent 100 may include an inner or outer surface of each of the units 110, 120, and 130, and may have a hollow cylindrical shape.

Here, the coating can be selected from but not limited to PTFE (Polytetrafluoroethylene), silicone, polyurethane, polyester, polypropylene, polyethylene, polyolefin, HDPE (high density polyethylene), and expanded Polytetrafluoroethylene (ePTFE).

In addition, each of the portions 110, 120, and 130 includes at least one radiopaque indicator 140 for securing the visibility of the endoscopic inner stent 100 installed in the body.

Herein, the radiopaque indicator 140 secures visibility when inserting the endoscopic inner stent 100 through examination using X-ray or other radiation, thereby accurately positioning the endoscopic inner stent 100 at the stenotic site .

In addition, the endoscope inner stent 100, which is not the end of the second body part 120, that is, the end extending from the first body part 110, is inserted into the inner cavity, have.

Here, the pulling member may be provided in such a form that the pulling member is coupled through the circumference of the circumference of the wire forming the other end of the second body portion 120, and then the both ends of the pulling member are tied to form a knot.

Such a pulling member is a means for facilitating the removal of the stent 100 in the endoscope, minimizes tissue damage in the stenotic region that may occur during the removal process, and allows the removal process to be performed simply without surgical operation .

4, 5 and 6, the second body 320 of the endoscopic inner stent 300 is inserted from one end of the first body 310 to the other end The diameter may be gradually extended to a certain extent, and then, when the diameter is expanded beyond a certain range, the diameter may be stopped to be expanded and the expanded size may be maintained.

As shown in FIG. 6, the second body part 320 has a region beyond the predetermined range of which diameter expansion is stopped and a region having a constant diameter is located on the inner wall of the duodenum 10, and the contact area between the lumen and the stent is Thereby reducing tissue damage due to the contact between the stent and the lumen.

2. Description of the operation of the stent in the endoscope

3 and 6, the endoscopic inner stent 100 of the present invention has a first body 110 having a diameter narrower than that of the second body 120 when installed in a body cavity, The second body portion is located in the lumen having a relatively large diameter.

For example, as shown in FIG. 3, the endoscopic inner stent 100 positions the first body part 110 in the bile duct 20 and the second body part 120 in the duodenum 10, It is possible to easily move the surgical tool to the position desired by the operator by guiding the movement path of the surgical instruments moving through the lumen of the body such as the endoscope 200 without a separate confirmation procedure and a guide device.

The first body part 110 is installed in a body lumen having a diameter difficult to move due to the entry of surgical instruments such as the endoscope 200 as in the case of the bile duct 20 so that the diameter of the lumen can be adjusted by a surgical tool such as the endoscope 200 To the extent that it can enter.

Therefore, the endoscopic stents 100 and 300 are not limited in the place where the moving path of the endoscope 200 moving from the duodenum 10 to the bile duct 20 is secured, And can be variously used for securing a movement passage by being installed in a lumen formed with a diameter which is not easy to move the tool.

In addition, since the movement preventing portion 130 of the endoscopic inner stent 100 has a diameter passing through the biliary hole and gradually expanding toward the end portion in the bile duct 20, Thereby preventing the entire body 110 or the first body 110 from being detached from the mounting position.

The embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the technical idea of the present invention. The scope of protection is to be construed in accordance with the following claims, and all technical ideas within the scope of equivalents thereof should be construed as being included in the scope of the present invention.

10: duodenum
20: Biliary tract
100, 300: Endoscopic intravenous stent
110, 310: a first body part
110, 320: a second body part
130, 330:
140, 340: radiopacity indicator
200: Endoscope

Claims (4)

A first body portion having a hollow cylindrical shape; And
And a second body part having a hollow cylindrical shape with a diameter different from the diameter of the first body part at one end of the first body part
Endoscopic stents.
The method according to claim 1,
Wherein the first body part is different in the size of the space formed by the intersection of the metal wires constituting the first body part, and thus the first body part has a flexural deformability.
Endoscopic stents.
3. The method of claim 2,
The first body part may have a diameter that is greater than a diameter of the first body part at the other end of the first body part to prevent slipping of the first body part,
Endoscopic stents.
The method of claim 3,
And the movement preventing portion is formed to have a larger diameter in a direction from the other end of the first body portion toward the end portion thereof
Endoscopic stents.
KR1020140149876A 2014-10-31 2014-10-31 Endoscope Guide Stent KR101651148B1 (en)

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KR101651148B1 KR101651148B1 (en) 2016-09-05

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010024879A1 (en) * 2008-08-26 2010-03-04 William A. Cook Australia Pty. Ltd. Thoracic aorta stent graft with access region
KR20100042478A (en) * 2008-10-16 2010-04-26 (주) 태웅메디칼 A making method for the stent and the stent thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010024879A1 (en) * 2008-08-26 2010-03-04 William A. Cook Australia Pty. Ltd. Thoracic aorta stent graft with access region
KR20100042478A (en) * 2008-10-16 2010-04-26 (주) 태웅메디칼 A making method for the stent and the stent thereof

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