KR101750661B1 - Stent structure for duct to intestine connection - Google Patents

Abstract

The present invention relates to a stent structure for connecting a tube and a stomach, comprising: a stent body of an elastic material; A conical head extending from an outer side of one end of the stent-shaped body; And a ring-shaped stopper inserted into the stent-shaped body.
It is an object of the present invention to provide a stent structure for connecting a tube and a stomach which can connect anastomosis site easily and quickly for connecting a tube and a stomach, Anastomosis surgical aids are provided.

Description

[0001] STENT STRUCTURE FOR DUCT TO INTESTINE CONNECTION [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stent structure, and more particularly, to a stent structure in which an anastomotic site can be connected easily and quickly for connection between a tube and a stomach.

The only treatment that can be expected to cure pancreatic cancer is surgery, but only 20% of patients with this type of surgery have this disease. The pancreas is partially or totally ablated, and the surrounding tissues are removed as needed. The operation is different depending on the location of the cancer. If the tumor is spread all over the pancreas, pancreatectomy is performed. If the pancreas is in the head, a whip (pylorus preserving pancreaticoduodenectomy) to be.

Particularly, whipple operation (whipple operation) is one of the surgical procedures when cancer occurs on the head of the pancreas. It is used to treat the pancreatic head and duodenum, small intestine, lower stomach, And to connect the small intestine to the upper part of the stomach.

However, current techniques to connect the pancreas to the small intestine or anastomosis or suture is done by a physician directly through the needle and thread. Anastomosis and suture due to vertical connections connecting the small intestine to the organs, such as the pancreas, are time consuming when the surgeon directly sutures through the needle and the suture, and use positional and structural instruments such as linear staplers or circular staplers There is a problem that it is difficult.

In the relationship between bowel and stomach, linear surgery staplers or circular staplers for anastomosis and combination are very useful and popular because they shorten the operation time compared to the past. A linear surgical stapler typically includes an anvil surface against which staples fired from a cartridge positioned opposite are struck. The tissue is captured in a gap between the jawlike anvil and the cartridge.

A plurality of staples arranged in parallel rows in a staggered manner are fired into the tissue and the blades operate to sever tissue between the two sets of staple rows. Generally, the stapler is a single fire device and it must be reloaded with staple-cartridges during use. Most surgical procedures require the use of multiple cartridges. The stapler is designed to operate only with a new staple cartridge in place and has a safety device that prevents the operation of the blade if there is no new staple cartridge. Individual staple-cartridges have the disadvantage that they are very expensive.

Korean Patent Laid-Open Publication No. 10-2015-0037987 (public date: April 08, 2015) Korean Patent Publication No. 10-2006-0048860 (Published on May 18, 2006)

The stent structure for connecting the tube and the stent according to the present invention has the following problems.

First, the present invention is to provide a stent structure capable of connecting an anastomosis site of a canal with a simple and quick connection.

Second, the present invention is to provide an anastomosis surgery assistant device which can easily and safely connect a tube and a stomach joint so as to create an environment in which a medical staff can be more conveniently and quickly engaged.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide an apparatus and method for controlling the same.

According to an aspect of the present invention, there is provided a stent structure for connection between a tube and a stent, comprising: a stent body of an elastic material; A conical head extending from an outer side of one end of the stent-shaped body; And a ring-shaped stopper inserted into the stent-shaped body.

Preferably, the stent-type body has a plurality of through-holes penetrating the inside and the outside of the side surface. Preferably, the stent-type body and the head are made of silicon. The stent- It is preferable to form the step portions spaced apart from each other and surrounding the side surface portion.

The stent-type body may have a smaller cross-sectional diameter from the step to the distal end, the step has a vertical cross-section in the head direction, and the thickness gradually decreases toward the opposite end of the head Shape.

In addition, it is preferable that the ring-shaped stopper is made of a bio-degradable material. It is preferable that the ring-shaped stopper has a constant diameter of the hollow portion and a narrowed end face of the ring-shaped stopper. It is preferable that a plurality of projections are formed.

Preferably, the body of the head is formed of a plurality of continuous wings having a reduced thickness in the outward direction.

The stent structure for connection of a tube and a field according to the present invention has the following effects.

First, the present invention provides a stent structure capable of easily and rapidly connecting and connecting an anastomotic site for connection of a tube and a stomach by proposing a structure capable of stably and firmly fixing a stent structure and an organs.

Second, the present invention provides an anastomosis surgery assistant device which can stably and firmly fasten and connect the tube and the stomach with each other, thereby enabling an environment in which a medical staff can conveniently and quickly interact with each other.

Third, the present invention uses a biodegradable material to provide a safe, environmentally friendly, harmless, and safe operation assistant device that can be decomposed naturally and excreted like excretion.

The effects of the present invention are not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

1 is a partial perspective view of a stent structure for connection of a tube and a chamber according to an embodiment of the present invention.
2 is an assembled perspective view of a stent structure for connection of a tube and a chamber according to an embodiment of the present invention.
FIG. 3 is a fragmentary and cross-sectional view of a stent structure for connection of a tube and a chamber according to an embodiment of the present invention. FIG.
FIG. 4 is a long-term connection diagram using a stent structure for connection between a tube and a chamber according to an embodiment of the present invention.

Further objects, features and advantages of the present invention will become more apparent from the following detailed description and the accompanying drawings.

Before describing the present invention in detail, it is to be understood that the present invention is capable of various modifications and various embodiments, and the examples described below and illustrated in the drawings are intended to limit the invention to specific embodiments It is to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Further, terms such as " part, "" unit," " module, "and the like described in the specification may mean a unit for processing at least one function or operation.

In the following description of the present invention with reference to the accompanying drawings, the same components are denoted by the same reference numerals regardless of the reference numerals, and redundant explanations thereof will be omitted. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

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

FIG. 1 is a partial perspective view of a stent structure for connection of a tube and a chamber according to an embodiment of the present invention, and FIG. 2 is a perspective view of a stent structure for connection of a tube and a chamber according to an embodiment of the present invention.

As shown in FIGS. 1 and 2, a stent structure for connection between a tube and a stomach according to an embodiment of the present invention includes: a stent-type body 100 made of an elastic material; A conical head (200) extending from an outer side of one end of the stent-type body (100); And a ring stopper 300 (stopper) inserted into the stent-type body 100. INTESTINE refers to organs such as the pancreas, small intestine, large intestine, and duodenum, and a duct refers to a duct or tube connected to such a intestine.

As described above, according to the present invention, the stent structure having the conical head 200 is inserted into a specific organ, and then inserted into the stent-type body 100 by the ring-shaped stopper 300 to fix the joint between the organ and the stent structure securely and firmly The stent structure for the connection of the tube and the stent can be provided which enables a general anastomosis by a medical staff or an anastomosis using a stapler to be impossible and a much simpler and quicker operation.

1, the stent-type body 100 is a stent-type tubular body 100, which is inserted into a perforation site of an organ, such as a small intestine, and the conical head 200 is a stent- Shaped or conical-shaped structure extending from one end of the stent structure. When the stent structure is inserted into the puncture site of the organ and then pulled, a head or a conical head 200 acts as a latching jaw, Thereby preventing the stent structure from escaping to the outside.

The ring-shaped stopper 300 has a ring shape and is inserted into the stent-type body 100. In this structure, after the head 200 of the stent-type body 100 is inserted and pulled inward of the organ, the ring-shaped stopper 300 is inserted from the distal end of the stent-type body 100, The inner side surface of the head 200 and the ring-shaped stopper 300 are pressed against each other and connected to each other, so that the inner side surface of the head 200 and the ring-shaped stopper 300 are more stable and firmly fixed. After that, the medical staff will perform the role of anastomosis surgical aids which can make the environment more convenient and quick.

As described above, the whipple operation (whipple operation) is one of the surgical procedures when the cancer occurs in the head portion of the pancreas. The pancreatic head and duodenum, part of the small intestine, The anastomosis or suture of the pancreas is connected to the intestine through the upper portion of the pancreas. In the past, medical staff have sutured through the suture directly. However, because of the location characteristic of the surgical site, There is a problem in that it is not easy to use a medical binding mechanism such as a stapler described in the present.

Therefore, in the embodiment of the present invention, a stent-type structure is used as an auxiliary device for connecting a tube to a small intestine tube and a pancreas, and a tube and a stent are adhered through a stent-type structure So that the surgeon can directly contact the surgeon in the vicinity of the stent-type structure.

FIG. 3 is a fragmentary and cross-sectional view of a stent structure for connection of a tube and a chamber according to an embodiment of the present invention, and FIG. 4 is a schematic diagram of a long term connection using a stent structure for connection of a tube and a chamber according to an embodiment of the present invention.

3, the stent structure for connection between a tube and a stomach according to an embodiment of the present invention includes a hollow tube-shaped stent-type body 100, And a ring-shaped stopper 300 which is inserted and fixed in the direction of the head 200 from the end of the body 100.

Here, it is preferable that the stent-type body 100 is made of silicone. Since the stent-type body 100 is made of an elastic material and has flexibility, even if it is inserted or adhered to organs such as small intestine or pancreas, It is a biocompatible substance. In addition, the stent-type body 100 may be made of any material that is flexible, biocompatible, and non-toxic.

The stent-type body 100 preferably has a step portion 150 spaced apart from the head 200 by a predetermined distance to surround the side portion. This is because when the stent-type body 100 is pulled after the specific part of the head 200 is inserted, the inner part of the head 200 is brought into close contact with the organ and the ring-shaped stopper 300 is inserted in the direction of the head 200 Since the ring-shaped stopper 300 is not pushed backward and a step for stably fixing the ring-like stopper 300 is required.

It is preferable that the shape of the step portion 150 is such that a vertical cross section is formed in the direction of the head 200 and a thickness becomes smaller toward the opposite end of the head 200. This is because when the ring-shaped stopper 300 is inserted in the direction of the head 200 from the end of the stent-type body 100, the thickness of the step portion 150 is gradually increased, The reason for forming the vertical cross section is to fix the ring-shaped stopper 300 closely to the head 200 and securely fix the ring-shaped stopper 300 so as not to be pushed backward because the body 100 is easy to insert into the pipe.

3, the cross-sectional shape of the step portion 150 has a curved thickness structure in which an arc is drawn in the direction of the head 200, so that the ring-shaped stopper 300 of a flexible and elastic material is tightly fixed It becomes easy.

In addition, a plurality of through-holes 115 penetrating inside and outside the stent-type body 100 are preferably formed on the side surface of the stent-type body 100. When the stent-type body 100 is inserted into an intestine such as a pancreas, various secretions flowing from the inner side of the stent-type body 100, which is in contact with the side surface of the stent-type body 100, So as to flow smoothly to other organs connected to the head 200.

In addition, the stent-type body 100 may have a smaller cross-sectional diameter from the step 150 to a distal end, or a smaller cross-sectional diameter from a distal end to a distal end. Thus, the distal end portion of the stent-type body 100 is formed in a tapered shape in order to facilitate insertion of the ring-shaped stopper 300.

1 to 3, the head 200 forms a conical shape or a conical shape extending from the outer side of one end of the stent-type body 100. As shown in FIG. The conical head 200 is formed by inserting the head 200 into the perforation of one of the organs to which the head 200 is to be connected and moving the head 200 backward. So as to have a step function to prevent the slider from coming off any more.

A plurality of protrusions 250 may be formed on the inner surface of the head 200. Since the inner surface of the head 200 can slide due to the silicone material of the stent when the head 200 is inserted into the perforation of the organ and then retracted, It is preferable to form a plurality of protrusions 250 capable of increasing frictional force so as to firmly fix and adhere.

In addition, the body of the head 200 may be formed with a plurality of continuous wings whose thickness gradually decreases in the outward direction of the head 200. In the case of the conical structure in which the wings are getting thinner, the flexibility and the elasticity are higher, and the inner surface and the perforation surface of the organ are more closely adhered (not shown).

The ring-shaped stopper 300 is a ring structure that is inserted into the stent-type body 100. The ring-shaped stopper 300 may have a constant diameter of the hollow portion and a smaller thickness of the peripheral end face. That is, as shown in Fig. 3, the cross-section may be a triangular shape. It is also preferable that the rear end surface of the ring-shaped stopper 300 is flat so as to be closely attached to the vertical end of the step portion 150.

FIG. 4 is a schematic view showing a long term connection using a stent structure for connecting a tube to a tube according to an embodiment of the present invention. A conical head 200 is inserted into an empty inner space such as a small intestine, The pancreas 300 is closely fixed to the inside of the jaw 150 and then the pancreas of the small intestine and the pancreas are joined together.

In this way, it is possible to obtain the effect of naturally healing and joining the anastomotic site due to the long-term connection after a lapse of time after connecting the tube and the intestine. Particularly, in case of performing a small incision in the abdomen such as laparoscopic surgery, and placing a video camera and various instruments in the abdominal cavity through the hole, it is difficult to directly connect the tube and the anastomosis with the hands of the medical staff, However, as shown in FIG. 4, when a tube and a stent are connected using a stent structure having a simple structure according to an embodiment of the present invention, an anastomosis operation is facilitated, .

4, although the stent structure for connection between the tube and the stomach according to the embodiment of the present invention remains inserted in the pancreas, the secretion secreted inside the pancreas is stuck to the stent body 100, So that it can smoothly function as a passage for two long-term secretions.

Here, the ring-shaped stopper 300 is preferably made of a bio-degradable material. Biodegradable materials are biodegradable polymers or biodegradable plastic materials that can be degraded by enzymes of bacteria or living organisms.

When the inner surface of the head 200 and the ring-shaped stopper 300 closely contact and fix the perforation surface of the organs on both sides and are joined to other organs and then the adjacent portion is directly aided by the medical staff (hand suture) The anastomotic site heals naturally. Then, the ring-shaped stopper (300) in the stent structure provided at the two long-term connecting parts is biodegradable and is decomposed naturally to escape to the outside as the excrement. Therefore, it is possible to remove the harmful element do

The embodiments and the accompanying drawings described in the present specification are merely illustrative of some of the technical ideas included in the present invention. Accordingly, the embodiments disclosed herein are for the purpose of describing rather than limiting the technical spirit of the present invention, and it is apparent that the scope of the technical idea of the present invention is not limited by these embodiments. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100: stent-type body 115: through-hole
150: step jaw 200: conical head
250: protrusion 300: ring-shaped stopper

Claims (10)

A stent-shaped body of elastic material; A conical head extending from an outer side of one end of the stent-shaped body; And a ring-shaped stopper inserted into the stent-shaped body, the stent-shaped body being spaced apart from the head by a predetermined distance to form a step portion surrounding the side portion, the step portion forming a vertical section in the head direction, Wherein a thickness of the ring-shaped stopper is reduced toward the opposite end of the head, and the ring-shaped stopper has a constant diameter of the hollow portion, and a peripheral end face thereof becomes narrower toward the front side thereof. The method according to claim 1,
The stent-
Wherein a plurality of through holes are formed through the inner and outer sides of the stent. Claim 1
The stent-type body and the head may include:
A stent structure for the connection of a tube and a field, characterized by a silicone material. delete The method according to claim 1,
The stent-
And the cross-sectional diameter decreases from the step portion to the distal end portion of the stent structure. delete The method according to claim 1,
The ring-
Wherein the stent structure is a biodegradable material. delete The method according to claim 1,
Wherein a plurality of projections are formed on the inner surface of the head. The method according to claim 1,
Wherein the body of the head is formed of a plurality of continuous wings having a reduced thickness in the outward direction.

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