KR20210107477A - Medical stent - Google Patents

Abstract

The present invention relates to a medical stent, comprising: a balloon unit for delaying gastric emptying of food; a stent unit disposed in the duodenum of a wearer; and a connection unit connecting the balloon unit and the stent unit. According to the present invention, it is possible to provide the medical stent that can help delay gastric emptying of food, can be placed in the duodenum, and can treat obesity and diabetes without side effects.

Description

Medical stent {MEDICAL STENT}

The present invention relates to a medical stent, and more particularly, to a medical stent that can help delay gastric emptying of food, can be placed in the duodenum, and can treat obesity and diabetes without side effects.

There are more than 600 million obese patients worldwide, including in Korea, and 36.5% of the US population is overweight or obese.

Diabetes patients were reported in about 380 million people in 2014, of which 90% were reported as type 2 diabetes patients.

Many obese patients are accompanied by diabetes, and in this case, effective obesity treatment is difficult only with obesity drug treatment and exercise therapy, and there are many drug-related side effects and drug abuse.

Accordingly, interest in medical stents is increasing. However, in the conventional medical stent having a balloon configuration, side effects such as ulceration may occur due to frequent movement of the balloon part inside the stomach, and the balloon part may block the pylorus part and food may not go down.

In addition, the medical stent in the form of a stent is simply disposed in the digestive tract and in most cases is in close contact with the mucous membrane, so there is a problem in that the stent is migrated. In addition, there are side effects such as ulceration, and there is a problem that the digestive inhibitory effect is lowered.

Domestic Patent Publication No. 10-2014-0015332

The problem to be solved by the present invention is to provide a medical stent that can help delay gastric emptying of food, can be placed in the duodenum, and can treat obesity and diabetes without side effects.

An object of the present invention is a balloon portion for delaying gastric emptying of food; a stent portion disposed in the wearer's duodenum; And it may be achieved by a medical stent comprising a; and a connection portion for connecting the balloon portion and the stent portion.

An object of the present invention is a balloon portion disposed on the inside of the wearer's stomach; a stent portion disposed in the wearer's duodenum; And it may be achieved by a medical stent comprising a; and a connection portion for connecting the balloon portion and the stent portion.

According to the present invention, it is possible to provide a medical stent that can help delay gastric emptying of food and can be placed in the duodenum, and can treat obesity and diabetes without side effects.

1 is a cross-sectional view schematically showing that a medical stent according to an embodiment of the present invention is disposed inside the human body;
2 is a schematic cross-sectional view of a medical stent according to an embodiment of the present invention;
Figure 3 (a) is a photograph exemplarily showing the stent portion included in the medical stent according to an embodiment of the present invention,
Figure 3 (b) is a photograph exemplarily showing the stent portion included in the medical stent according to an embodiment of the present invention,
Figure 3 (c) is a photograph exemplarily showing the stent portion included in the medical stent according to an embodiment of the present invention.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and those of ordinary skill in the art to which the present invention pertains. It is provided to fully understand the scope of the present invention to those skilled in the art, and the present invention is only defined by the scope of the claims.

The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. As used herein, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, “comprises” and/or “comprising” does not exclude the presence or addition of one or more other components in addition to the stated components. Like reference numerals refer to like elements throughout, and "and/or" includes each and every combination of one or more of the recited elements. Although "first", "second", etc. are used to describe various elements, these elements are not limited by these terms, of course. These terms are only used to distinguish one component from another. Accordingly, it goes without saying that the first component mentioned below may be the second component within the spirit of the present invention.

Unless otherwise defined, all terms (including technical and scientific terms) used herein will have the meaning commonly understood by those of ordinary skill in the art to which this invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless specifically defined explicitly.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view schematically showing that a medical stent according to an embodiment of the present invention is disposed inside the human body.

2 is a schematic cross-sectional view of a medical stent according to an embodiment of the present invention.

3 (a) to 3 (c) is a photograph showing an exemplary stent portion included in the medical stent according to an embodiment of the present invention.

Referring to FIGS. 1, 2, and 3 (a) to 3 (c), the medical stent 10 according to an embodiment of the present invention is a balloon part 100, a stent part 200, and a connection part. (300).

The balloon unit 100 is disposed on the wearer's stomach. The balloon unit 100 may be disposed on the inside of the wearer's stomach.

The balloon 100 may have elasticity. The balloon 100 may include, for example, silicon.

The balloon unit 100 may be inflated by injecting air or saline therein. Balloon unit 100, for example, 150 to 250 cc of air or saline may be injected therein.

The balloon unit 100 expands in the stomach to provide a feeling of satiety to the wearer, thereby delaying gastric emptying.

The balloon 100 may have a shape similar to that of a hot air balloon, for example. The top of the balloon unit 100 is blocked, so it can inflate when air or saline is injected.

The balloon unit 100 may have a hole into which air or saline is injected at any location. For example, the balloon unit 100 may have a hole in which air or saline is injected in the upper portion (opposite side connected to the connection unit 300) of the balloon unit 100.

The balloon unit 100 is disposed on the inside of the wearer's stomach to provide a feeling of satiety to the wearer. The balloon 100 may delay gastric emptying.

The balloon unit 100 does not move much inside the stomach, and may be disposed in the lower portion of the stomach close to the duodenum.

The balloon unit 100 is disposed in the connection portion of the stomach and duodenum, it is advantageous to control the speed at which food passes from the stomach to the duodenum.

The balloon part 100 may be connected to the stent part 200 to prevent the stent part 200 from being separated from the digestive tract.

The shape and material of the balloon part 100 is not particularly limited as long as it does not harm the wearer.

The stent unit 200 is disposed in the wearer's digestive tract. The stent unit 200 may be disposed in the upper portion of the duodenum of the wearer.

The stent unit 200 is not pushed into the duodenum in the position where it is initially placed by friction.

The stent unit 200 may be disposed in close contact with the mucous membrane of the upper duodenum of the wearer.

In one embodiment, the length of the stent 200 may be 8 to 10 centimeters (cm). The stent unit 200 may cover, for example, only a portion of the upper portion of the duodenum (eg, the primary portion). "Upper portion" may mean a portion closer to the upper than the large intestine. The substances discharged from the duodenum are different for each region, and the stent unit 200 can prevent food and substances discharged from the primary region of the duodenum from coming into contact with each other.

More specifically, the stent unit 200 can prevent the bile secreted from the papilla of the duodenum, pancreatic juice, food passing to the primary duodenum, and cholecystokinin (CCK) secreted from the primary duodenum from meeting. have.

Accordingly, the stent unit 200 may increase the secretion of cholecystokinin, thereby increasing the amount of glucagon-like peptide 1 (GLP-1), which is an obesity-related appetite suppressant, by a feedback phenomenon.

In addition, the stent unit 200 may prevent the microbiome associated with obesity and diabetes existing in the primary region of the duodenum from being mixed with bile and food. Accordingly, the microbiome that does not function normally can be minimized, thereby helping to treat obesity and diabetes.

The stent unit 200 has a cylindrical tube shape that can be contracted and expanded. The stent unit 200 may have a mesh shape. The wall surface of the stent unit 200, for example, a plurality of spiral filaments cross each other and weave to form a mesh shape.

The stent unit 200 may include, for example, a shape memory alloy that self-expands by heat. The stent 200 may be coated with, for example, silicon.

The stent unit 200 may be self-expandable. The stent unit 200 may contract, for example, in a process of being inserted into a living tissue of the human body, thereby reducing its outer diameter. The stent unit 200 may, for example, expand by temperature at the surgical position to increase the outer diameter.

The stent unit 200 inserted into the living tissue may serve to prevent stenosis of the living tissue.

The length L1 of the long side of the stent part 200 may be 8 to 10 cm. When the length L1 of the long side of the stent 200 is out of the above range, it may be unsuitable for insertion into the human body.

The stent portion 200 includes an upper flare 201 , a lower flare 202 , and a stent connector 203 .

The upper flare 201 is connected to the connection part 300 . The upper flare 201 may include, for example, silicon.

The upper flare 201 may overlap the stent connector 203 . For example, the upper flare 201 may surround the stent connector 203 .

The upper flare 201 may have a trapezoidal shape in cross-section. In this case, for example, the length of the base may be 55 to 65 mm, the length of the upper side may be 20 to 30 mm, and the height L2 may be 6 to 12 mm.

The area on the cross-section of the upper flare 201 is wider than the area on the cross-section of the lower flare 202 . The upper flare 201 is fixed to the stomach (stomach), so there is a space to spare, but the lower flare 202 may have a smaller cross-sectional area than the upper flare 202 in consideration of the diameter of the duodenum.

The lower flare 202 is spaced apart from the connection part 300 . The lower flare 202 may include, for example, silicon.

The lower flare 202 may overlap the stent connector 203 . For example, the lower flare 202 may surround the stent connector 203 .

The lower flare 202 may be trapezoidal in cross-section. In this case, for example, the length L3 of the base may be 20 to 30 mm, the length of the upper side may be 40 to 45 mm, and the height may be 6 to 12 mm.

The stent connector 203 connects the upper flare 201 and the lower flare 202 . The width of the stent connection portion 203 may be constant, and as shown in FIG. 2 , a portion may be inflated.

The stent connector 203 may include, for example, silicon.

The medical stent 10 according to an embodiment of the present invention may further include an outer skin 210 . The outer skin 210 may have a cylindrical shape.

The outer skin 210 surrounds a portion of the stent portion 200 . The outer skin 210 surrounds, for example, the middle of the stent portion 200 . One end and the other end of the stent unit 200 are exposed to the outside of the outer skin (210).

The outer skin 210 may include, for example, at least one of polytetrafluoroethylene (PTFE), silicone, polyurethane, polyester, polypropylene, polyethylene, polyolefin, high density polyethylene (HDPE), and expanded polytetrafluoroethylene (ePTFE). have.

The outer skin 210 may prevent the stent 200 from being separated from the digestive tract by increasing the frictional force.

The outer skin 210 blocks direct contact between the secretions in the duodenum and food to suppress digestion/absorption, thereby suppressing digestion and absorption of food.

The connection part 300 connects the stent part 200 and the balloon part 100 . The connection unit 300 may prevent the balloon unit 100 from falling more than a specific distance from the stent unit 200 .

The connection part 300 may be flexible. “Flexible” means a property that can be bent, and more specifically, it may mean that it is flexible, bends, or bends.

The connection part 300 is flexible, and the balloon part 100 pushes the stent part 200, so that the stent part 200 may not be separated from the digestive tract to provide a buffering effect.

The connection unit 300 may prevent a situation in which the stent unit 200 is pushed into the duodenum as the balloon unit 100 is pressed from occurring.

The connection part 300 may include, for example, at least one of a micro coil or silicon.

The connection part 300 may have a length of, for example, 20 to 25 mm. If the length of the connection part 300 is out of the above range, it may be unsuitable to be inserted into the human body, and the above-described buffering effect may be deteriorated.

The connection unit 300 may include a plurality of connection lines. The connection unit 300 may include, for example, three connection lines. The connection unit 300 may include, for example, four connection lines.

Each of the connecting lines connects the stent unit 200 and the balloon unit 100 . As mentioned above, the balloon unit 100 may be in the form of a hot air balloon. That is, the connecting lines may fix the distance between the balloon unit 100 and the stent unit 200 . The connecting lines may allow the balloon 100 to go down without blocking the pylorus.

When the balloon unit 100 is connected in the form of a hot air balloon, the balloon unit 100 does not move much inside the stomach, and may be disposed in the lower portion of the stomach close to the duodenum. In addition, the balloon unit 100 is disposed in the connection portion of the stomach and duodenum, it is advantageous to control the speed at which food passes from the stomach to the duodenum.

As a plurality of connecting lines connect the stent unit 200 and the balloon unit 100, the connecting lines closer to the duodenum than the stomach move only in the form of ascending or descending, thereby controlling the speed at which food passes from the stomach to the duodenum. can be advantageous

The connecting lines more strongly fix the balloon unit 100 than connecting the balloon unit 100 with the stent unit 200 with one connecting line, thereby minimizing the movement of the balloon unit 100 . Accordingly, side effects such as vomiting can be prevented. In addition, it is possible to minimize the influence on the stent unit 200, such as the stent unit 200 is spaced apart as the balloon unit 100 moves.

Medical stent 10 according to an embodiment of the present invention, including both the balloon part 100 and the stent part 200, helps to delay gastric emptying of food, and can be placed in the duodenum, without side effects, obesity and Diabetes can be cured.

As mentioned above, although embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art to which the present invention pertains can realize that the present invention can be embodied in other specific forms without changing its technical spirit or essential features. you will be able to understand Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

10: medical stent
100: balloon part
200: stent unit
201: upper flare
202: lower flare
203: stent connection
210: outer skin
300: connection

Claims (16)

a balloon unit for delaying gastric emptying of food;
a stent portion disposed in the wearer's duodenum; and
A medical stent comprising a; a connecting portion for connecting the balloon portion and the stent portion.
The method of claim 1,
The balloon part
A medical stent disposed in the lower part of the stomach close to the duodenum of the wearer to control the speed at which the food passes from the stomach to the duodenum.
The method of claim 1,
The balloon part
A medical stent that is inflated by injecting air or saline inside.
The method of claim 1,
The stent part
A medical stent disposed in the upper portion of the duodenum of the wearer.
The method of claim 1,
The stent part
By friction with the duodenum, the medical stent is fixed without being rolled into the inside of the duodenum.
The method of claim 1,
The stent part
A medical stent having a mesh shape.
The method of claim 1,
The stent part
A self-expandable medical stent.
According to claim 1,
The stent part
an upper flare connected to the connection part;
a lower flare spaced apart from the upper flare; and
Medical stent comprising a; stent connection for connecting the upper flare and the lower flare
9. The method of claim 8,
Each of the upper flare and the lower flare has a trapezoidal shape in cross section for a medical stent.
9. The method of claim 8,
The area on the cross-section of the upper flare is
A medical stent that is wider than the width on the cross-section of the lower flare.
The method of claim 1,
Medical stent further comprising an outer skin surrounding a portion of the stent portion.
12. The method of claim 11,
The outer skin surrounds the middle of the stent portion,
One end and the other end of the stent portion is a medical stent exposed to the outside of the outer skin.
The method of claim 1,
the connection part
Medical stents for preventing the balloon portion from being spaced apart more than a certain distance from the stent portion.
The method of claim 1,
the connection part
It includes a plurality of connecting lines connecting the stent and the balloon,
The balloon portion is connected to the connecting lines in the form of a hot air balloon, and ascends or descends in the direction of the stomach in the duodenum, thereby controlling the speed at which the food moves from the stomach to the duodenum.
The method of claim 1,
The connection part is flexible,
A medical stent for preventing the stent from being pushed into the duodenum as the balloon is pressed.
a balloon portion disposed on the inside of the wearer's stomach;
a stent portion disposed in the wearer's duodenum; and
A medical stent comprising a; a connecting portion for connecting the balloon portion and the stent portion.

Images