JP7204311B1 - Backflow prevention tool - Google Patents

Abstract

An object of the present invention is to reliably prevent backflow of stomach contents from the stomach to the esophagus. Kind Code: A1 A blocking member 11 configured to prevent backflow of gastric contents from the stomach to the esophagus and capable of substantially blocking the cardia of the stomach is provided, and the blocking member 11 has a helical shape along a conical surface Cs. and a second shape formed by extending the first shape in the central axis direction of the conical surface Cs to form an elongated spiral shape that can be inserted into the stomach. The blocking member 11 inserted into the stomach in the second shape is deformed into the first shape to substantially block the cardia. [Selection drawing] Fig. 1

Description

TECHNICAL FIELD The present invention relates to an anti-reflux device for preventing the reflux of stomach contents from the stomach into the esophagus.

A pillow disclosed in Patent Document 1 below has been proposed as a means for preventing backflow of stomach contents from the stomach to the esophagus during sleep. This pillow is configured to prevent backflow of stomach contents (gastric acid) by tilting it so as to lift the upper body of a person lying down while sleeping.

JP 2019-58695 A

However, the conventional backflow prevention means (pillow) disclosed in Patent Document 1 has problems to be solved. Specifically, the backflow prevention means is an indirect prevention means for preventing backflow by inclining the upper half of the person's body. It is difficult to prevent

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and its main object is to provide a backflow prevention tool that can reliably prevent the backflow of stomach contents from the stomach to the esophagus.

In order to solve the above problems, a backflow prevention device according to claim 1 is a backflow prevention device for preventing the backflow of stomach contents from the stomach to the esophagus, and is capable of substantially obstructing the cardia of the stomach. A closure member is provided, and the closure member has a first shape that forms a spiral along the conical surface and substantially closes the cardia, and an elongated spiral that extends the first shape in the central axis direction of the conical surface. is formed in the shape of a cord that is mutually deformable with a second shape that can be inserted into the stomach, and after maintaining the second shape for a predetermined time without being restricted from the outside, an external force is applied. The cardia is configured to be deformed from the second shape to the first shape without the cardia, and the obstruction member inserted into the stomach in the state of the second shape is deformed to the first shape. can be substantially closed.

The backflow prevention device according to claim 2 is the backflow prevention device according to claim 1, wherein the blocking member is made of a weakly elastic material and deforms from the second shape to the first shape.

The backflow prevention device according to claim 3 is the backflow prevention device according to claim 1, wherein the closing member is made of a shape memory material, and changes from the second shape to the first shape as the temperature rises. transform.

According to the backflow prevention tool of the present invention, the first spiral shape along the conical surface and the second elongated spiral shape obtained by extending the first shape in the central axis direction of the conical surface are formed. By providing the obturating member formed to be mutually deformable, the inserted obturating member deforms to the first shape by a simple operation of inserting the obturating member in the state of the second shape into the stomach. It can reliably occlude the cardia of the stomach.

Further, according to the backflow prevention device according to the present invention, since the blocking member is formed of a weakly elastic body, the blocking member of the second shape can be moved to the first position by its own elastic force without applying an external force to the blocking member. Since the cardia of the stomach is occluded by deforming the shape, no means for deforming the obturating member is required, and as a result, the configuration of the anti-backflow device can be simplified.

In addition, according to the backflow prevention device of the present invention, the blocking member is made of a shape memory material, so that the blocking member of the second shape can be moved to the first position by its own restoring force without applying an external force to the blocking member. Since the cardia of the stomach is occluded by deforming the shape, no means for deforming the obturating member is required, and as a result, the configuration of the anti-backflow device can be simplified.

Fig. 2 is a perspective view of the backflow prevention device 100 in the first shape; Fig. 10 is a perspective view of the backflow prevention device 100 in a second shape; FIG. 4 is a first explanatory diagram for explaining how to use the backflow prevention device 100; FIG. 10 is a second explanatory diagram for explaining how to use the backflow prevention tool 100;

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of the backflow prevention tool which concerns on this invention is described with reference to an accompanying drawing.

First, the configuration of the backflow prevention device 1 shown in FIG. 1 will be described. A backflow prevention device 1 is an example of a backflow prevention device according to the present invention, and as shown in FIG. In this embodiment, the anti-backflow device 1 comprises a blocking member 11, an insertion member 12 and a holding string 13, as shown in FIG.

As shown in FIGS. 1 and 3, the obstructing member 11 has a first shape (initial shape) in which it forms a spiral shape along the conical surface Cs and substantially obstructs the cardia 101 of the stomach 100, and a shape shown in FIG. , the first shape is elongated in the central axis direction of the conical surface to form an elongated helical shape and is formed in a cord shape (string shape) that can be mutually deformed between the second shape and the second shape that can be inserted into the stomach 100. there is In this case, the closing member 11 is made of a weakly elastic material (soft polyvinyl chloride, for example), and configured to deform from the second shape to the first shape by its own elastic force without applying an external force. ing.

As shown in FIG. 1, the insertion member 12 is formed in a cylindrical shape from a flexible material (eg, soft polyvinyl chloride). The insertion member 12 has a distal end portion 12a detachably connected to the proximal end portion 11b of the closing member 11 .

As shown in FIG. 1, the holding string 13 passes through the insertion member 12 and has a distal end portion 13a connected to a proximal end portion 11b of the closing member 11, and a proximal end portion 13b pulled out from the proximal end portion 12b of the insertion member 12. ing. The holding string 13 has a function of holding the closing member 11 (preventing it from falling) by locking the base end portion 13b between the teeth of the wearer.

Next, how to use the backflow prevention tool 1 will be described. The backflow prevention device 1 is preferably used by a doctor or under the guidance of a doctor or the like.

First, the front end portion 11a of the closing member 11 in the first shape (initial state) shown in FIG. . Next, while holding the base end 12b of the insertion member 12, the blocking member 11 is inserted from the wearer's mouth 300 through the esophagus 200 into the stomach 100. As shown in FIG.

Next, the state in which the second shape blocking member 11 is inserted into the stomach 100 is maintained for a predetermined time. Subsequently, the closing member 11 deforms from the second shape to the first shape (returns to the initial state) due to its own elastic force while a predetermined time elapses. The insertion member 12 is then pulled up until the first shape closure member 11 is positioned at the cardia 101 of the stomach 100 . Subsequently, the insertion member 12 is pulled out, and then the base end 13b of the holding string 13 is engaged between the wearer's teeth to hold the closing member 11. As shown in FIG. As a result, the cardia 101 of the stomach 100 is substantially occluded.

By attaching the anti-backflow device 1 as described above, the cardia 101 of the stomach 100 is substantially blocked by the blocking member 11, thereby preventing the backflow of the contents of the stomach from the stomach 100 to the esophagus 200. can.

It should be noted that the present invention is not limited to the above-described embodiments, and can be modified as appropriate. For example, in the above-described backflow prevention device 1, the blocking member 11 is made of a weakly elastic material so that the blocking member 11 is deformed from the second shape to the first shape by its own elastic force without applying an external force. However, the obturating member 11 is made of a shape-memory material so that when the obturating member 11 is inserted into the stomach 100 from outside the body, the temperature rises and the second shape changes to the first shape. The closure member 11 can also be constructed.

In the above example, the first shape is used so that the upper portion has a large diameter and the lower portion has a small diameter. Conversely, in the first shape, the upper portion has a small diameter and the lower portion has a large diameter. It can also be used like this:

1 backflow prevention device 11 obstruction member 100 stomach 200 esophagus 101 cardia Cs conical surface

Claims (3)

An anti-reflux device for preventing reflux of gastric contents from the stomach into the esophagus, comprising:
comprising an obstruction member capable of substantially obstructing the cardia of the stomach;
The obturating member has a first spiral shape along the conical surface to substantially occlude the cardia, and an elongated spiral shape extending the first shape in the central axis direction of the conical surface. is formed in a code-like shape mutually deformable between a second shape that can be inserted into the interior of the second shape without applying an external force after maintaining the second shape for a predetermined time without being restricted from the outside configured to transform from a shape to the first shape ;
A backflow preventive device configured to substantially block the cardia by deforming the blocking member inserted into the stomach in the second shape state to the first shape. 2. The backflow prevention device according to claim 1, wherein said closing member is made of a weakly elastic material and deforms from said second shape to said first shape. 2. The backflow prevention device according to claim 1, wherein said closing member is made of a shape memory material, and deforms from said second shape to said first shape as temperature rises.

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