CN111921069B - Inflatable visual stomach tube traction device - Google Patents

Abstract

An inflatable visualized gastric tube traction device belongs to the field of medical devices. Usually, for non-surgical patients, the gastrointestinal tube can only reach the stomach body when placed by hand, and it is difficult to pass through the pylorus to enter the small intestine. The gastrointestinal tube is easy to get stuck in the greater curvature of the stomach when it touches the bottom. An inflatable visualized gastric tube traction device, an airbag band (3) is sleeved on the outside of a combined guide airbag (2), the combined guide airbag (2) is fixedly connected to a sealing plug (4), the other end of the sealing plug (4) is sleeved with a sleeve (5), and the outer wall of the sleeve (5) is sleeved with a gastrointestinal tube (6); an endoscope (1) passes through the gastrointestinal tube (6), the sleeve (5), the sealing plug (4), and the combined guide airbag (2) in sequence, and a camera is installed at the front end of the endoscope (1); a group of inflatable tubes (7) are evenly arranged on the periphery of the endoscope (1). The gastric tube traction device designed by the present invention can bend and rotate, and has a more flexible degree of freedom. By controlling the amount of gas in different channels, operations such as bending, twisting, and rotation can be achieved.

Description

An inflatable visualized gastric tube traction device

Technical Field

The invention relates to an inflatable visualized stomach tube traction device.

Background Art

Nasogastric (intestinal) tube intubation is a medical procedure that involves inserting a plastic tube through a nasogastric tube or nasogastric tube, passing through the throat and down into the stomach (intestines). Nasogastric (intestinal) tubes are used for feeding and medication and other oral medications. Nasogastric (intestinal) tubes pass through the nasal cavity and esophagus through the cardia to enter the gastric body (intestines). Usually, for non-surgical patients, manual placement of gastrointestinal tubes can only reach the gastric body, and it is difficult to enter the small intestine through the pylorus. The reason is that the gastrointestinal tube is easy to get stuck in the greater curvature of the stomach when it touches the bottom. Continuous placement will cause the tube to accumulate and make it difficult to move forward. The pyloric area in the back half of the gastric body is a blind spot. Without the help of gastroscopy visualization, it is difficult to accurately find the pyloric opening. Alternatively, the gastric tube can be inserted by traction with a hard guide wire, but it will damage the gastric body and cause the risk of bleeding. The gastrointestinal tube cannot be placed in the small intestine.

Summary of the invention

The purpose of the present invention is to solve the problem that the existing gastric tube used for gastrointestinal feeding and drug administration can only reach the stomach body but is difficult to continue to be inserted into the small intestine, and an inflatable visualized gastric tube traction device is proposed.

An inflatable visualized gastric tube traction device, an inflatable visualized gastric tube traction device, the inflatable visualized gastric tube traction device comprises an endoscope, a combined guiding airbag, an airbag band, a sealing plug, a sleeve, a gastrointestinal tube and a group of inflatable tubes, the endoscope, the combined guiding airbag, the sealing plug, the sleeve and the gastrointestinal tube are coaxially arranged;

The airbag belt is arranged in the extension direction of the traction device and is sleeved on the outer wall of the combined guide airbag. The combined guide airbag has a cylindrical shape. The rear end of the combined guide airbag is fixedly connected to one end of the sealing plug. The other end of the sealing plug is sleeved on the front end of the sleeve. The outer wall of the sleeve is sleeved on the gastrointestinal tube; the endoscope passes through the gastrointestinal tube, the sleeve, the sealing plug, and the combined guide airbag in sequence, and a camera is installed at the front end of the endoscope; a group of inflation tubes are arranged in the space between the endoscope and the sleeve, and the front end of the inflation tube passes through the sleeve and the sealing plug and is connected to the combined guide airbag. A group of inflation tubes are evenly distributed in the circumferential direction around the endoscope; the airbag belt, sleeve, gastrointestinal tube, and inflation tube are all made of flexible materials.

The beneficial effects of the present invention are:

The present invention controls the bending and rotation of the endoscope head with multiple degrees of freedom through a multi-channel inflation structure, realizes the function of a miniature gastroscope, and visualizes multi-degree-of-freedom movements, so that the angle can be adjusted even when passing through the greater curvature of the stomach body, ensuring that the traction device leads to the pylorus. Different from the mechanical structure of a gastroscope, taking three channels as an example, the three-channel inflation structure is simpler, the processing and manufacturing cost is extremely low, and the bending and rotation freedom is more flexible, and the bending, twisting, rotation and other movements can be realized by controlling the amount of gas in different channels.

The three-channel airbag is a hollow structure with three equally divided intervals built in. Each cavity has an equally spaced raised structure, which produces different degrees of deformation during the inflation process to achieve bending movement. Each airbag module of the combined guide airbag has a belt groove on the outer surface for wrapping the airbag belt (the airbag belt can be made of cotton thread). The airbag module will not bulge locally during bending. There is an independent columnar channel in the middle of the combined guide airbag for placing a micro endoscope. The overall structure of the airbag module is formed by one-time injection molding of the mold, which ensures airtightness to the greatest extent.

The sealing plug is a hard plastic, which is assembled on the combined guide balloon structure and evenly distributed with a group of small channels of equal diameter, namely the sealing lock holes, for installing the inflation tube. The inflation tube is fixed and the silicone balloon module is sealed by a special adhesive. The end of the sealing plug is adapted to the silicone sleeve, which accommodates the inflation tube and facilitates movement in the gastric tube.

The inflation tube is a flexible plastic tube with a small diameter of 1mm, which is used to inflate the airbag module.

The sleeve is a highly transparent medical silicone tube, which is used to store the inflation tube and fix the sealing plug and the airbag module at the same time, making it convenient to remove them from the gastric tube after traction is completed.

The gastrointestinal tube is an ordinary medical silicone gastrointestinal tube with a porous structure at the front end to prevent blockage by accumulated fluid and food residues. After the balloon and sleeve structure are placed into the small intestine through the pylorus, it can be smoothly placed along the channel to complete the intestinal placement operation.

An inflation system is set up, which includes three parts: a micro inflation pump, an inflation controller, and a visual display. The micro inflation pump is used for gas delivery, and the operator controls the bending movement of the airbag according to the actual situation inside the stomach. The inflation controller issues an inflation command to achieve different inflation amounts in different cavities to realize movement control.

The micro endoscope is a professional endoscope with a diameter of 2 mm, which can achieve visualization function through the channel between the cannula and the airbag.

Principle of multi-degree-of-freedom motion:

The interior of the multi-channel airbag is composed of uniform sealed air chambers. Due to the air pressure, the air chambers are deformed and expanded unevenly, causing the overall structure to move in the opposite direction, thus bending. Due to the regular air supply of the air pump, complex movements such as rotation and twisting can be achieved according to the program design. In this way, multi-degree-of-freedom movements that can be controlled by humans can be achieved.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic structural diagram of the present invention;

Fig. 2 is a partial cross-sectional view of the present invention;

FIG3 is a cross-sectional exploded view of the present invention;

FIG4 is a schematic diagram of the structure of the sealing plug of the present invention;

FIG5 is a schematic structural diagram of an exploded view of an assembled guide airbag according to the present invention;

FIG6 is a schematic structural diagram of an airbag module of the present invention;

FIG7 is a schematic structural diagram of an airbag module of the present invention that is a constant volume airbag module;

FIG8 is a schematic diagram of the structure of the inflated bending state when the airbag module of the present invention is a constant volume airbag module;

FIG9 is a schematic structural diagram of an airbag module of the present invention that is a tapering airbag module;

FIG10 is a schematic structural diagram of an inflated bending state of an airbag module of the present invention when the airbag module is a tapered airbag module;

FIG11 is a schematic structural diagram of an airbag module of the present invention that is an incremental airbag module;

FIG12 is a schematic structural diagram of an inflated bending state of an airbag module of the present invention when the airbag module is an incremental airbag module;

FIG13 is a schematic structural diagram of an airbag module of the present invention that is a downward-bending airbag module;

FIG14 is a schematic structural diagram of an inflated curved state of an airbag module of the present invention when the airbag module is a downward curved airbag module;

FIG15 is a schematic structural diagram of an upward-curved airbag module of the present invention;

FIG16 is a schematic structural diagram of an inflated curved state of an airbag module of the present invention when the airbag module is an upward curved airbag module;

FIG17 is a schematic structural diagram of an airbag module of the present invention that is a biased airbag module;

FIG18 is a schematic structural diagram of the inflated bending state of the airbag module of the present invention when the airbag module is a biased airbag module;

FIG. 19 is a schematic diagram of the working principle structure of the present invention.

DETAILED DESCRIPTION

Specific implementation method one:

An inflatable visualized gastric tube traction device of this embodiment, as shown in Fig. 1-3, comprises an endoscope 1, a combined guiding airbag 2, an airbag band 3, a sealing plug 4, a sleeve 5, a gastrointestinal tube 6 and a group of inflatable tubes 7, wherein the endoscope 1, the combined guiding airbag 2, the sealing plug 4, the sleeve 5 and the gastrointestinal tube 6 are coaxially arranged;

The airbag belt 3 is arranged in the extension direction of the traction device and is sleeved on the outer wall of the combined guiding airbag 2. The outer shape of the combined guiding airbag 2 is cylindrical. The rear end of the combined guiding airbag 2 is fixedly connected to one end of the sealing plug 4. The other end of the sealing plug 4 is sleeved on the front end of the sleeve 5, and the outer wall of the sleeve 5 is sleeved on the gastrointestinal tube 6; the endoscope 1 passes through the gastrointestinal tube 6, the sleeve 5, the sealing plug 4, and the combined guiding airbag 2 in sequence. A camera is installed at the front end of the endoscope 1, and the camera is located outside the front end of the combined guiding airbag 2; a group of inflation tubes 7 are arranged in the space between the endoscope 1 and the sleeve 5, and the front end of the inflation tube 7 passes through the sleeve 5 and the sealing plug 4 and is connected to the combined guiding airbag 2. A group of inflation tubes 7 are evenly distributed around the endoscope 1 in the circumferential direction; the airbag belt 3, the sleeve 5, the gastrointestinal tube 6, and the inflation tube 7 are all made of flexible materials.

Specific implementation method 2:

Different from the first specific embodiment, the inflatable visualized gastric tube traction device of this embodiment, as shown in Figure 4, has a sealing plug hole 4a in the middle portion thereof, so that the endoscope 1 can pass through and be installed through the sealing plug hole 4a; a group of sealing lock holes 4b are evenly distributed on the outer circle of the sealing plug hole 4a, so that the inflation tube 7 can pass through and be installed through it.

The number of the sealing lock circumferential holes 4b is 3-6.

Specific implementation method three:

Different from the first or second specific embodiments, the inflatable visualized gastric tube traction device of the present embodiment, as shown in FIGS. 5 and 6 , the combined guide airbag 2 comprises a group of airbag modules 2a, a group of airbag modules 2a are arranged in a circle with the central axis of the endoscope 1 as the central axis, the central axis of the airbag module 2a is parallel to the central axis of the endoscope 1, each airbag module 2a is a long hollow structure, an inflation hole 2a2 is provided at the end of the airbag module 2a, a group of strap grooves 2a1 are arranged at equal intervals along the length direction on the outer side wall of the airbag module 2a, an inner groove 2a3 is provided on the inner side wall of the airbag module 2a, and the extension direction of the inner groove 2a3 is consistent with the length direction of the airbag module 2a;

The belt groove 2a1 is used to install and fix the airbag belt 3, and the combined guide airbag 2 is fixed by means of the airbag belt 3. The inflation hole 2a2 is used to insert the inflation tube 7. The grooves 2a3 on the guide airbag 2 are arranged to form a channel for installing the endoscope 1, providing space for the insertion, penetration and installation of the endoscope 1.

The airbag module 2a is made of flexible silicone material.

Specific implementation method four:

Different from the third specific embodiment, in the inflatable visualized gastric tube traction device of this embodiment, the cross section of the airbag module 2a is fan-shaped.

Specific implementation method five:

Different from the first, second or fourth embodiments, the inflatable visualized gastric tube traction device of this embodiment, as shown in FIG. 7 , has a group of airbag cavities 2a4 inside the airbag module 2a, and the airbag cavities 2a4 are arranged along the length direction of the airbag module 2a;

The volume and shape of the group of airbag cavities 2a4 are exactly the same, forming an isovolumetric airbag module.

As shown in FIG. 8 , in the isovolumetric airbag module, starting from the inflation hole 2a2, the volume of each airbag cavity 2a4 is the same, and after inflation, the isovolumetric airbag module will bend linearly and gradually.

Specific implementation method six:

Different from the fifth specific embodiment, in this embodiment, an inflatable visualized gastric tube traction device is shown in FIG. 9 , in which the volume of a group of airbag cavities 2a4 gradually decreases from one end of the inflation hole 2a2 to the other end, forming a decreasing airbag module.

As shown in Figure 10, in the decreasing airbag module, starting from one end of the inflation hole 2a2, the volume of each airbag cavity 2a4 gradually decreases; after inflation, the side of the decreasing airbag module close to the inflation hole 2a2 is more curved, and the degree of curvature gradually decreases as it moves away from the inflation hole 2a2.

Specific implementation method seven:

Different from the fifth specific embodiment, in this embodiment, an inflatable visualized gastric tube traction device is shown in FIG. 11 , in which the volume of a group of airbag cavities 2a4 gradually increases from one end of the inflation hole 2a2 to the other end, forming an increasing airbag module.

As shown in Figure 12, in the incremental airbag module, starting from the inflation hole 2a2, the volume of each airbag cavity 2a4 gradually increases; after inflation, the incremental airbag module has a smaller curvature on one side close to the inflation hole 2a2, and the degree of curvature gradually increases as it moves away from the inflation hole 2a2.

Specific implementation eight:

Different from the fifth embodiment, in the inflatable visualized gastric tube traction device of the present embodiment, as shown in FIG13 , among the group of airbag cavities 2a4, the airbag cavity 2a4 in the middle position has the largest volume, and the volume of the airbag cavity 2a4 extending to both sides gradually decreases, forming a downward curved airbag module;

As shown in FIG. 14 , after inflation, the downward-curved airbag module has the largest curvature in the middle, and the curvature gradually decreases as it extends toward both ends.

Specific implementation method nine:

Different from the fifth embodiment, in the inflatable visualized gastric tube traction device of the present embodiment, as shown in FIG. 15 , among the group of airbag cavities 2a4, the airbag cavity 2a4 in the middle position has the smallest volume, and the volume of the airbag cavity 2a4 extending to both sides gradually increases, forming an upward curved airbag module;

As shown in FIG. 16 , after inflation, the curvature of the upward-curved airbag module is the smallest in the middle, and the curvature gradually increases as it extends toward both ends.

Specific implementation method ten:

Different from the fifth embodiment, in the inflatable visualized gastric tube traction device of the present embodiment, as shown in FIG. 17 , among the group of airbag cavities 2a4, the airbag cavity 2a4 in the middle and far away from the inflation hole 2a2 has the largest volume, which is larger than the volume of other airbag cavities 2a4, forming a biased airbag module;

As shown in FIG. 18 , after inflation, the deflected airbag module is located in the middle and is most bent at the deflected position away from the inflation hole 2 a 2 .

Working principle:

Before use, the inflation visualization gastric tube traction device B must be connected to the inflation system, which includes a micro inflation pump A02, an inflation controller A03, and a visualization display A01, as shown in FIG19 .

The visual display A01 is connected to the endoscope 1, the micro air pump A02 is connected to the inflation tube 7, and the inflation controller A03 is used to control which inflation tube 7 the micro air pump A02 inflates, so that the corresponding airbag module 2a is inflated and bent.

The airbag module 2a can have various forms, as shown in Figures 7-18, namely, a constant volume airbag module, a decreasing airbag module, an increasing airbag module, a downward-curved airbag module, an upward-curved airbag module, a biased airbag module and their inflated shapes; during use, the above types of airbag modules 2a can be combined according to specific needs to form the required combined guide airbag 2.

In actual application, the inflatable visualized gastric tube traction device B is inserted from the patient's nasal cavity, and gradually penetrates into the patient's stomach under the guidance of the image fed back by the endoscope 1 to the visualized display A01; then the corresponding airbag module 2a in the combined guiding airbag 2 is inflated, so that the combined guiding airbag 2 produces a corresponding bend, so as to guide the gastrointestinal tube 6 located at the rear end through the pylorus of the patient's stomach and enter the patient's small intestine; after entering the patient's small intestine, combined with the image fed back by the endoscope 1, the corresponding airbag module 2a in the combined guiding airbag 2 can be continued to be inflated, so as to guide the gastrointestinal tube 6 to continue to penetrate into the patient's small intestine, so as to reach the feeding and drug administration site, and at the same time, the patient's gastrointestinal affected area can be inspected through the endoscope 1.

When the predetermined position is reached, the endoscope 1, the combined guide balloon 2, the balloon band 3, the sealing plug 4, the sleeve 5, and the inflation tube 7 can be withdrawn from the rear end of the gastrointestinal tube 6. At this time, feeding and medication can be introduced into the patient's body through the gastrointestinal tube 6. After the feeding and medication are completed, the gastrointestinal tube 6 can be pulled out from the patient's body.

Claims (9)

1. An inflatable visualized gastric tube traction device, characterized in that: the inflatable visualized gastric tube traction device comprises an endoscope (1), a combined guiding airbag (2), an airbag band (3), a sealing plug (4), a sleeve (5), a gastrointestinal tube (6) and a group of inflatable tubes (7), the endoscope (1), the combined guiding airbag (2), the sealing plug (4), the sleeve (5) and the gastrointestinal tube (6) being coaxially arranged; The airbag belt (3) is arranged in the extension direction of the traction device and is sleeved on the outer wall of the combined guide airbag (2). The combined guide airbag (2) has a cylindrical shape. The rear end of the combined guide airbag (2) is fixedly connected to one end of the sealing plug (4). The other end of the sealing plug (4) is sleeved on the front end of the sleeve (5). The outer wall of the sleeve (5) is sleeved on the gastrointestinal tube (6). The endoscope (1) passes through the gastrointestinal tube (6), the sleeve (5), the sealing plug (4), and the combined guide airbag (2) in sequence. A camera is installed at the front end of the endoscope (1). A group of inflation tubes (7) is arranged in the space between the endoscope (1) and the sleeve (5). The front end of the inflation tube (7) passes through the sleeve (5) and the sealing plug (4) and is connected to the combined guide airbag (2). The group of inflation tubes (7) are evenly distributed around the endoscope (1) in a circumferential direction. The airbag belt (3), the sleeve (5), the gastrointestinal tube (6), and the inflation tube (7) are all made of flexible materials. The combined guide airbag (2) comprises a group of airbag modules (2a), the group of airbag modules (2a) being arranged in a circle with the central axis of the endoscope (1) as the central axis, the central axis of the airbag module (2a) being parallel to the central axis of the endoscope (1), each airbag module (2a) being a long hollow structure, an inflation hole (2a2) being provided at the end of the airbag module (2a), a group of strap grooves (2a1) being arranged at equal intervals along the length direction on the outer side wall of the airbag module (2a), an inner groove (2a3) being provided on the inner side wall of the airbag module (2a), the extension direction of the inner groove (2a3) being consistent with the length direction of the airbag module (2a); The strap groove (2a1) is used to install and fix the airbag strap (3), and the airbag strap (3) is used to fix the combined guide airbag (2). The inflation hole (2a2) is used to insert the inflation tube (7). The grooves (2a3) on the guide airbag (2) are arranged to form a channel for installing the endoscope (1), providing space for the insertion, penetration and installation of the endoscope (1); The airbag module (2a) is made of a flexible silicone material; The airbag module (2a) further comprises a group of airbag cavities (2a4) inside, and the airbag cavities (2a4) are arranged along the length direction of the airbag module (2a). 2. An inflatable visualized gastric tube traction device according to claim 1, characterized in that: a sealing plug center hole (4a) is provided in the middle portion of the sealing plug (4), through which the endoscope (1) passes; and a group of sealing lock holes (4b) are evenly distributed on the outer circle of the sealing plug center hole (4a), through which the inflation tube (7) passes. 3. An inflatable visualized gastric tube traction device according to claim 1, characterized in that the cross section of the airbag module (2a) is fan-shaped. 4. The inflatable visualized gastric tube traction device according to claim 1, characterized in that: The volume and shape of the group of airbag cavities (2a4) are completely the same. 5. The inflatable visualized gastric tube traction device according to claim 1, characterized in that the volume of the group of air bag cavities (2a4) gradually decreases from one end of the inflation hole (2a2) to the other end. 6. An inflatable visualized gastric tube traction device according to claim 1, characterized in that the volume of the group of air bag cavities (2a4) gradually increases from one end of the inflation hole (2a2) to the other end. 7. An inflatable visualized gastric tube traction device according to claim 1, characterized in that: among the group of airbag cavities (2a4), the volume of the airbag cavity (2a4) in the middle position is the largest, and the volume of the airbag cavity (2a4) extending to both sides gradually decreases. 8. An inflatable visualized gastric tube traction device according to claim 1, characterized in that: among the group of airbag cavities (2a4), the volume of the airbag cavity (2a4) in the middle position is the smallest, and the volume of the airbag cavity (2a4) extending to both sides gradually increases. 9. An inflatable visualized gastric tube traction device according to claim 1, characterized in that: among the group of airbag cavities (2a4), the volume of the airbag cavity (2a4) located in the middle and away from the inflation hole (2a2) is larger than the volume of the other airbag cavities (2a4).