CN118902869A - Visual jejunum tube with gastric peristalsis stimulation function and tube placing method thereof - Google Patents

Abstract

The present invention relates to a visualized jejunal tube with gastric peristalsis stimulation function and a method for placing the tube, comprising a silicone catheter for extending into the stomach to deliver nutrient solution and a guide device detachably inserted and arranged in the silicone catheter along the length direction of the silicone catheter; further comprising two electrode sheets fixed on the outer wall of the silicone catheter and located at different heights and both cooperating with the position of the gastric cardia; further comprising an eccentric air bag fixed on the outer wall of the silicone catheter and located at the diagonal sides of the two electrode sheets; further comprising an annular air bag sleeved and fixed on the outer wall of the lower end of the silicone catheter and higher than any infusion hole; the present invention can deliver nutrient solution to the patient's intestine while performing contact electrical stimulation on the gastric pacemaker at the cardia, and has a much better effect on the recovery of gastrointestinal function than remote electrical stimulation in vitro, while avoiding the general anesthesia surgical trauma caused by the use of an implantable electrical stimulator.

Description

A visualized jejunal tube with gastric peristalsis stimulation function and a method for placing the tube

Technical Field

The present invention relates to the technical field of medical devices, and in particular to a visualized jejunal tube with a gastric peristalsis stimulation function and a tube placement method thereof.

Background Art

The jejunum is a part of the small intestine, located in the abdominal cavity, connected to the duodenum above and the ileum below; the jejunum is tortuous and coiled in the abdominal cavity. As an important part of the small intestine, the jejunum is vital to human health. It can excrete food residues, absorb nutrients in food, promote normal digestion and absorption of food, accelerate intestinal peristalsis, and reduce the accumulation of waste and toxins in the intestines.

When a patient becomes unconscious due to brain trauma, stroke, brain tumor, or degenerative brain disease, or has difficulty swallowing due to brainstem dysfunction, or needs enteral nutrition after thoracic or abdominal surgery, the most common and effective method is to use a jejunal tube to deliver the nutrient solution directly into the patient's jejunum; however, existing jejunal tubes have a single function and only have the function of delivering nutrient solution.

In addition to drug intervention, clinically developed therapeutic devices to improve gastric emptying function have been used to treat common digestive system diseases such as anorexia, indigestion, bloating and belching, gastroparesis, gastroptosis, weak gastric pacemaker (insufficient gastric motility), and gastric rhythm disorder syndrome. These devices are all in vitro treatments, generally by attaching electrodes to the patient's skin to provide electrical stimulation to the stomach, so that the disordered gastrointestinal tract follows the resonance effect to produce activity to restore the normal gastrointestinal bioelectric rhythm, thereby achieving the purpose of restoring normal gastrointestinal function. Although this technology is non-invasive and has no side effects, it is far away from the gastrointestinal pacemaker and does not directly stimulate the parasympathetic nerves, so the recovery effect is greatly reduced.

In response to this situation, an implantable gastric electrical stimulator has appeared on the market. However, the process of inserting it into the patient's body must be performed through laparoscopic surgery to implant the two contacts of the electrode into the seromuscular layer of the stomach wall and fix it. The electrode is connected to the stimulator through a wire, and the stimulator must be implanted subcutaneously in the abdomen. When working, the stimulator sends an electrical pulse signal to the seromuscular layer of the stomach for electrical stimulation to improve the motor function of the stomach. However, this technology must be performed under general anesthesia, and the surgical trauma is also large. When removing the electrodes and stimulator, surgery is also required. Therefore, it is difficult for patients or their families to accept it, so it cannot be widely promoted;

In addition, the current method of inserting jejunal tubes is blind insertion, which is difficult to operate, extremely time-consuming and labor-intensive, and it is impossible to determine whether the insertion position is correct, so it has been criticized by clinicians. In response to this situation, jejunal tubes with visualization functions have appeared on the market, which can observe the insertion position of the jejunal tube in real time during insertion to solve the above problems. However, this solution is to fix the microscope camera and lighting equipment directly on the jejunal tube, which cannot be used repeatedly and can only be discarded directly after use, resulting in a huge waste of resources.

Summary of the invention

In view of the current status of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a visual jejunal tube with gastric motility stimulation function and a method for its placement, which can directly perform contact electrical stimulation on the gastric pacemaker in the cardia area while delivering nutrient solution to the patient's intestines, thereby significantly improving the recovery effect of gastrointestinal function, and can avoid the general anesthesia surgical trauma caused by the use of an implantable electrical stimulator, so as to be suitable for large-scale promotion. Moreover, the tube is simple and convenient to use, and the guide device can be reused to avoid waste of resources.

The technical solution adopted by the present invention to solve the above technical problems is: a visualized jejunal tube with gastric peristalsis stimulation function, characterized in that it includes a silicone tube for extending into the stomach to deliver nutrient solution and a guide device detachably inserted in the silicone tube along the length direction of the silicone tube;

The guiding device comprises a wire guide device, a microscopic camera disposed on the movable end of the wire guide device, a plurality of LED lamp beads disposed at the end of the microscopic camera, and a snake-bone structure disposed between the movable end of the wire guide device and the microscopic camera so that the microscopic camera has a steering function;

A transparent plug is also sealed and fixed at the lower opening of the silicone tube;

The outer wall of the lower end of the silicone tube is also provided with a plurality of infusion holes which are interconnected with the inside of the silicone tube;

It also includes two electrode sheets fixed on the outer wall of the silicone catheter and located at different heights and both cooperate with the position of the gastric cardia;

It also includes an eccentric airbag fixed on the outer wall of the silicone tube and located at the diagonal sides of the two electrode sheets, and the eccentric airbag is used to force the two electrode sheets to be closely attached to the cardiac sphincter with the help of the silicone tube after being inflated;

It also includes an annular air bag which is fixed on the outer wall of the lower end of the silicone catheter and is higher than any infusion hole. The annular air bag is used to limit the lower end of the silicone catheter in the jejunum after inflation.

Preferably, it further comprises two strip-shaped conductive coatings fixed on the outer wall of the silicone catheter along the circumference of the silicone catheter and covering the two electrode sheets respectively, and the two strip-shaped conductive coatings are electrically connected to the two electrode sheets respectively to increase the contact area between the electrode sheets and the cardiac sphincter.

Preferably, a first blind hole and a second blind hole distributed along the central axis of the silicone tube are further provided on the upper end surface of the silicone tube, the bottoms of the first blind hole and the second blind hole respectively extend to the inner sides of the two electrode sheets, a first threading hole is provided between the inner wall of the first blind hole or the second blind hole and the outer wall of the area covered by one of the electrode sheets on the silicone tube, and a second threading hole is provided between the inner wall of the second blind hole or the first blind hole and the outer wall of the area covered by the other electrode sheet on the silicone tube.

Preferably, a first threading hole is provided between the inner wall of the first blind hole or the second blind hole and the outer wall of the area covered by one of the electrode sheets on the silicone tube body, and a second threading hole is provided between the inner wall of the second blind hole or the first blind hole and the outer wall of the area covered by the other electrode sheet on the silicone tube body.

Preferably, a third blind hole distributed along the central axis of the silicone tube is also provided on the upper end surface of the silicone tube, the bottom of the third blind hole extends to the inner side of the eccentric airbag, and a first ventilation hole is provided between the inner wall of the third blind hole and the outer wall of the silicone tube located in the inner area of the eccentric airbag.

Preferably, a fourth blind hole distributed along the central axis of the silicone tube is also provided on the upper end surface of the silicone tube, the bottom of the fourth blind hole extends to the inner side of the annular airbag, and a second ventilation hole is provided between the inner wall of the fourth blind hole and the outer wall of the silicone tube located in the internal area of the annular airbag.

Preferably, the circumferential length of the airbag occupies half of the circumference of the outer wall of the silicone tube body, and the circumferential length of each strip-shaped conductive coating occupies half of the circumference of the outer wall of the silicone tube body.

Preferably, the vertical distance a between adjacent side edges of two electrode sheets is 6-10 mm.

Preferably, the guiding device also includes a processing module connected to the microscope camera signal, a monitor connected to the processing module signal, and a power module electrically connected to the processing module, and the power module is electrically connected to the monitor, the microscope camera and the microscope camera to provide electrical energy.

A method for placing a visualized jejunal tube with a gastric peristalsis stimulation function, characterized in that it comprises the following steps:

S1: plug the first airway tube at the opening of the fourth blind hole and connect the end opening of the first airway tube to the air source through the inflation valve; plug the second airway tube at the opening of the third blind hole and connect the end opening of the second airway tube to the air source through the inflation valve; connect the upper ends of the two wires to the positive and negative electrodes of the electric pulse generator, respectively, and to the two data acquisition ports of the gastric motility detector, respectively;

S2: Insert the movable end of the guide wire device in the guide device into the silicone catheter until the end of the camera contacts the transparent plug from the inside of the silicone catheter; insert the end of the silicone catheter where the transparent plug is located from the patient's nasal cavity and into the stomach through the oral cavity and esophagus; continue to insert the silicone catheter and use the steerable snake-bone structure on the guide device to allow the silicone catheter to pass through the bend smoothly until the lower end of the silicone catheter is located in the jejunum; during the process, the camera on the guide device will transmit the real-time position of the lower end of the silicone catheter to the monitor that establishes a communication connection with the processing module, and a number of LED lamp beads arranged at the end of the camera will provide lighting, so that medical staff can accurately grasp the real-time position of the lower end of the silicone catheter in a visualized state with the help of the image on the monitor;

S3: opening the inflation valve connected to the first airway tube to inflate the annular airbag with the help of the first airway tube and through the fourth blind hole and the second vent hole. After the annular airbag expands, its outer wall adheres to the inner wall of the jejunum to increase the friction between the silicone catheter and the intestinal wall. Then, the guiding device is pulled outward to prevent the guiding device from bringing out the silicone catheter, thereby limiting each infusion hole in the jejunum.

S4: When pulling out the guide device, the position of the eccentric balloon is observed with the help of a camera, and then the position of the silicone catheter is slowly pulled out under visualization with the help of the image on the monitor until the eccentric balloon reaches the cardiac sphincter of the stomach;

S5: opening the inflation valve connected to the second airway tube to inflate the eccentric airbag with the help of the second airway tube and through the third blind hole and the first vent hole, so that the silicone catheter is slightly pressed against the inner wall of the cardiac sphincter with the help of the inflated eccentric airbag, and then the silicone catheter is continuously pulled outwards, and when resistance is encountered, it is further verified that the eccentric airbag has reached the cardiac opening;

S6: Continue to inflate the eccentric balloon to adjust to an appropriate pressure, thereby gradually deforming the silicone catheter while still allowing the nutrient solution to pass through, so that the outer walls of the two strip-shaped conductive coatings are in direct contact and tightly attached to the cardiac sphincter;

S7: passing the nutrient solution into the silicone catheter to enter the patient's jejunum through each infusion hole, thereby directly delivering the nutrients to the patient's intestine via each infusion hole;

S8: After the nutrient solution is introduced into the patient's stomach, the gastric motility detector is turned on so that the two data acquisition ports on the gastric motility detector respectively establish signal connections with the two electrode sheets by means of two wires, and then the gastric motility detector will automatically obtain the patient's gastric motility data; then the electric pulse generator is turned on and the stimulation parameters of the electric pulse generator are set according to the gastric motility data obtained by the gastric motility detector, including stimulation intensity, frequency and pulse width, etc.; then, the electric pulse generator sends electric pulse signals to the two electrode sheets alternately at a certain frequency, and the electric pulse signals will intermittently electrically stimulate the cardiac sphincter located between the two electrode sheets; since the cardia is the starting section of the greater curvature of the stomach, the inside of the cardia is the pacemaker of the stomach, and intermittent electrical stimulation of the cardiac sphincter can effectively promote the formation of gastric peristalsis, thereby promoting the recovery of gastric emptying ability;

S9: After the nutrient solution is delivered and the intermittent electrical stimulation of the cardiac sphincter is completed, first turn off the gastric motility detector and the electric pulse generator, then empty the gas in the eccentric airbag and the annular airbag, and finally pull out the silicone catheter. The guide device can be recycled after cleaning and disinfection to avoid waste of resources.

Compared with the prior art, the advantages of the present invention are as follows: the present invention fixes two electrode sheets on the outer wall of the silicone catheter of the jejunal tube, and then can be inserted into the patient's stomach at any time with the help of the silicone catheter when needed and can be taken out from the stomach after use, which is simple and convenient to use; an eccentric airbag and an annular airbag that can be inflated and deflated are also arranged on the outer wall of the silicone catheter. When the annular airbag is inflated, the lower end of the silicone catheter can be positioned so that each infusion hole is confined in the jejunum; when the eccentric airbag is inflated, the eccentric airbag will force the silicone tube body to deform, thereby connecting two strip-shaped conductive electrodes that are electrically connected to the two electrode sheets respectively. The outer wall of the coating is tightly attached to the cardiac sphincter, so that while delivering nutrient solution to the patient's intestine, the gastric pacemaker in the cardiac area can be electrically stimulated at the same time, thereby achieving two goals at one stone. The effect on the recovery of gastrointestinal function is much better than remote electrical stimulation in vitro, and it is a non-invasive method. In addition, it avoids the trauma of general anesthesia surgery caused by the use of implanted electrical stimulators, so it is more easily accepted by patients and their families and suitable for large-scale promotion. When use is completed, the eccentric airbag and the annular airbag are deflated, and the silicone catheter together with the two electrode sheets and the two strip-shaped conductive coatings can be taken out of the body.

BRIEF DESCRIPTION OF THE DRAWINGS

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

FIG2 is a side structural diagram of the present invention;

FIG3 is a top view of an exploded structural diagram of the present invention;

FIG4 is a cross-sectional structural diagram of the eccentric airbag of the present invention in use;

FIG5 is a cross-sectional structural diagram of the annular airbag of the present invention;

FIG6 is a cross-sectional structural diagram of the annular airbag of the present invention in use;

FIG. 7 is a structural diagram of the guiding device of the present invention.

DETAILED DESCRIPTION

Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

In order to keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and well-known components are omitted.

As shown in FIGS. 1 to 7 , a visualized jejunal tube with gastric peristalsis stimulation function includes a silicone tube 1 for inserting into the stomach to deliver nutrient solution and a guide device 10 detachably inserted into the silicone tube 1 along the length direction of the silicone tube 1;

The guiding device 10 includes a wire guide device 1004, a microscopic camera 1001 disposed on the movable end of the wire guide device 1004, a plurality of LED lamp beads 1002 disposed at the end of the microscopic camera 1001, and a snake-bone structure 1003 disposed between the movable end of the wire guide device 1004 and the microscopic camera 1001 to enable the microscopic camera 1001 to have a steering function;

A transparent plug 2 is also sealed and fixed at the lower opening of the silicone tube 1;

The outer wall of the lower end of the silicone tube 1 is also provided with a plurality of infusion holes 17 which are interconnected with the inside of the silicone tube 1;

It also includes two electrode sheets 3 fixed on the outer wall of the silicone catheter 1 and located at different heights and both matched with the position of the gastric cardia;

It also includes an eccentric airbag 4 fixed on the outer wall of the silicone tube 1 and located at the diagonal sides of the two electrode sheets 3. The eccentric airbag 4 is used to force the two electrode sheets 3 to be closely attached to the cardiac sphincter 11 with the help of the silicone tube 1 after being inflated;

It also includes an annular airbag 9 which is sleeved and fixed on the outer wall of the lower end of the silicone catheter 1 and is higher than any infusion hole 17. The annular airbag 9 is used to limit the lower end of the silicone catheter 1 in the jejunum 12 after inflation.

It also includes two strip-shaped conductive coatings 5 fixed on the outer wall of the silicone catheter 1 along the circumference of the silicone catheter 1 and covering the two electrode sheets 3 respectively. The two strip-shaped conductive coatings 5 are electrically connected to the two electrode sheets 3 respectively to increase the contact area between the electrode sheets 3 and the cardiac sphincter 11.

A first blind hole 101 and a second blind hole 102 are also provided on the upper end surface of the silicone tube 1 and are distributed along the central axis direction of the silicone tube 1. The bottoms of the first blind hole 101 and the second blind hole 102 extend to the inner sides of the two electrode sheets 3 respectively. A first threading hole 103 is provided between the inner wall of the first blind hole 101 or the second blind hole 102 and the outer wall of the area covered by one of the electrode sheets 3 on the silicone tube 1. A second threading hole 104 is provided between the inner wall of the second blind hole 102 or the first blind hole 101 and the outer wall of the area covered by the other electrode sheet 3 on the silicone tube 1.

A third blind hole 105 distributed along the central axis of the silicone tube 1 is also provided on the upper end surface of the silicone tube 1, and the bottom of the third blind hole 105 extends to the inner side of the eccentric airbag 4. A first ventilation hole 106 is provided between the inner wall of the third blind hole 105 and the outer wall of the silicone tube 1 located in the inner area of the eccentric airbag 4.

A fourth blind hole 107 distributed along the central axis of the silicone catheter 1 is also provided on the upper end surface of the silicone catheter 1, and the bottom of the fourth blind hole 107 extends to the inner side of the annular airbag 9. A second ventilation hole 108 is provided between the inner wall of the fourth blind hole 107 and the outer wall of the silicone catheter 1 located in the inner area of the annular airbag 9.

A conductive wire 6 is also provided in each of the first blind hole 101 and the second blind hole 102 . The lower ends of the two conductive wires 6 pass through the first blind hole 101 and the second blind hole 102 respectively and are electrically connected to the two electrode sheets 3 respectively.

The circumferential length of the eccentric airbag 4 accounts for half of the circumference of the outer wall of the silicone catheter 1 .

The vertical distance a between the adjacent side edges of the two electrode sheets 3 is 8 mm.

The circumferential length of each strip-shaped conductive coating 5 accounts for half of the circumference of the outer wall of the silicone tube 1 .

The total length of the silicone catheter 1 is 67 cm, the outer diameter is 4 mm, and the inner diameter is 2.5 mm.

The strip-shaped conductive coating 5 is made of conductive silicone material.

The guiding device 10 also includes a processing module connected to the signal of the microscope camera 1001, a monitor connected to the signal of the processing module, and a power module electrically connected to the processing module. The power module is electrically connected to the monitor, the microscope camera 1001 and the microscope camera 1001 to provide electrical energy.

A method for placing a visualized jejunal tube with a gastric peristalsis stimulation function comprises the following steps:

S1: plug the first airway tube 8 at the opening of the fourth blind hole 107 and connect the end opening of the first airway tube 8 to the air source through the inflation valve; plug the second airway tube 7 at the opening of the third blind hole 105 and connect the end opening of the second airway tube 7 to the air source through the inflation valve; connect the upper ends of the two wires 6 to the positive and negative electrodes of the electric pulse generator, and to the two data acquisition ports of the gastric motility detector;

S2: Insert the movable end of the guide wire device 1004 in the guide device 10 into the silicone catheter 1 until the end of the camera 1001 contacts the transparent plug 2 from the inside of the silicone catheter 1; insert the end of the silicone catheter 1 where the transparent plug 2 is located from the patient's nasal cavity and into the stomach through the oral cavity and esophagus; continue to insert the silicone catheter 1 and use the steerable snake bone structure 1003 on the guide device 10 to allow the silicone catheter 1 to pass through the bend smoothly until the lower end of the silicone catheter is located in the jejunum 12; during the process, the camera 1001 on the guide device 10 will transmit the real-time position of the lower end of the silicone catheter 1 to the monitor that establishes a communication connection with it through the processing module, and a number of LED lamp beads 1002 arranged at the end of the camera 1001 will provide lighting, so that medical staff can accurately grasp the real-time position of the lower end of the silicone catheter 1 in a visualized state with the help of the image in the monitor; the guide wire device 1004 has been widely used in clinical practice and belongs to the prior art;

S3: Open the inflation valve connected to the first airway tube 8 to inflate the annular airbag 9 with the help of the first airway tube 8 and through the fourth blind hole 107 and the second vent hole 108. After the annular airbag 9 is inflated, its outer wall is attached to the inner wall of the jejunum 12 to increase the friction between the silicone catheter 1 and the intestinal wall of the jejunum 12. Then, the guiding device 10 is pulled outward to prevent the guiding device 10 from taking the silicone catheter 1 out, thereby limiting each infusion hole 17 in the jejunum 12.

S4: When pulling out the guide device 10, the position of the eccentric balloon 4 is observed with the help of the camera 1001, and then the position of the silicone catheter 1 is slowly pulled out in a visualized state with the help of the image in the monitor, until the eccentric balloon 4 reaches the cardiac sphincter 11 of the stomach;

S5: opening the inflation valve connected to the second airway tube 7 to inflate the eccentric airbag 4 with the help of the second airway tube 7 and through the third blind hole 105 and the first vent hole 106, so that the silicone catheter 1 is slightly pressed against the inner wall of the cardiac sphincter 11 with the help of the inflated eccentric airbag 4, and then the silicone catheter 1 is continuously pulled outwards, and when resistance is encountered, it is further verified that the eccentric airbag 4 has reached the cardiac opening;

S6: Continue to inflate the eccentric airbag 4 to adjust to an appropriate pressure, thereby gradually deforming the silicone catheter 1 while still allowing the nutrient solution to pass through, so that the outer walls of the two strip-shaped conductive coatings 5 are directly in contact with and closely attached to the cardiac sphincter;

S7: The nutrient solution is introduced into the silicone catheter 1 so as to enter the patient's jejunum 12 through each infusion hole 17, and the nutrient substance can be directly delivered to the intestinal tract of the patient who is unconscious after brain trauma, stroke, brain tumor and brain degenerative disease, or has difficulty swallowing due to brain stem dysfunction, or needs enteral nutrition after thoracic and abdominal surgery through each infusion hole 17; because the above patients cannot eat by themselves, the stomach has problems such as insufficient gastric motility, gastric emptying relaxation, gastroparesis, gastric peristalsis rhythm disorder, and the nutrient solution delivered to the patient's stomach cannot be quickly digested, which can easily cause reflux of gastric contents and cause lung infection after airway aspiration;

S8: After the nutrient solution is introduced into the patient's stomach, the gastric motility detector is turned on so that the two data acquisition ports on the gastric motility detector respectively establish signal connections with the two electrode sheets 3 by means of two wires 6, and then the gastric motility detector will automatically obtain the patient's gastric motility data (existing technology); then the electric pulse generator is turned on and the stimulation parameters of the electric pulse generator are set according to the gastric motility data obtained by the gastric motility detector, including stimulation intensity, frequency and pulse width, etc.; then, the electric pulse generator alternately sends electric pulse signals to the two electrode sheets 3 at a certain frequency, and the electric pulse signals will intermittently electrically stimulate the cardiac sphincter 11 located between the two electrode sheets 3; because the cardia is the starting section of the greater curvature of the stomach, the inside of the cardia is the pacemaker of the stomach, and intermittent electrical stimulation of the cardiac sphincter 11 can effectively promote the formation of gastric peristalsis, thereby promoting the recovery of gastric emptying ability;

S9: After the nutrient solution is delivered and the intermittent electrical stimulation of the cardiac sphincter 11 is completed, first turn off the gastric motility detector and the electric pulse generator, then empty the gas in the eccentric airbag 4 and the annular airbag 9, and finally pull out the silicone catheter 1. The guide device 10 can be recycled after cleaning and disinfection to avoid waste of resources.

The present invention adopts a non-invasive technology method to directly perform contact electrical stimulation on the gastric pacemaker point in the cardia area, and the effect is far better than in vitro acupoint stimulation; and after use, the gas in the eccentric airbag 4 is extracted to allow the two electrode sheets 3 and the two strip-shaped conductive coatings 5 to follow the silicone catheter 1 and leave the patient's stomach, thus avoiding the general anesthesia surgery trauma of the implantable electrical stimulator, and being more easily accepted by patients and their families.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. The visual empty intestine with the function of stimulating the peristalsis of the stomach is characterized by comprising a silica gel catheter which is used for extending into the stomach to convey nutrient solution and a guiding device which is detachably inserted in the silica gel catheter along the length direction of the silica gel catheter;

the guiding device comprises a guide wire device, a micro camera arranged on the movable end of the guide wire device, a plurality of LED lamp beads arranged at the end part of the micro camera, and a snake bone structure arranged between the movable end of the guide wire device and the micro camera so that the micro camera has a steering function;

a transparent plug is also fixed at the opening of the lower end of the silica gel conduit in a sealing way;

the outer wall of the lower end of the silica gel catheter is also provided with a plurality of infusion holes which are communicated with the inside of the silica gel catheter;

The electrode plates are fixed on the outer wall of the silica gel catheter, are positioned at different heights and are matched with the gastric cardia positions of the stomach;

The eccentric air bag is fixed on the outer wall of the silica gel catheter and positioned on the opposite sides of the two electrode plates, and the eccentric air bag is used for forcing the two electrode plates to be clung to the cardiac sphincter after being inflated by the silica gel catheter;

The inflatable infusion device is characterized by further comprising an annular air bag which is sleeved and fixed on the outer wall of the lower end of the silica gel catheter and is higher than any infusion hole, and the annular air bag is used for limiting the lower end of the silica gel catheter in jejunum after inflation.

2. The visualized hollow intestinal canal with the function of stimulating the peristalsis of the stomach according to claim 1, further comprising two strip-shaped conductive coatings which are circumferentially fixed on the outer wall of the silica gel catheter along the silica gel catheter and respectively cover the two electrode plates, wherein the two strip-shaped conductive coatings are respectively electrically connected with the two electrode plates so as to increase the contact area between the electrode plates and the cardiac sphincter.

3. The visual empty intestine with the function of stimulating the peristalsis of the stomach according to claim 1, wherein a first blind hole and a second blind hole which are distributed along the central axis direction of the silica gel catheter are further formed on the end face of the upper end of the silica gel catheter, the bottoms of the first blind hole and the second blind hole respectively extend to the inner sides of the two electrode plates, a first threading hole is formed between the inner wall of the first blind hole or the second blind hole and the outer wall of the silica gel catheter, which is covered by one of the electrode plates, and a second threading hole is formed between the inner wall of the second blind hole or the inner wall of the first blind hole and the outer wall of the silica gel catheter, which is covered by the other electrode plate.

4. The visual empty intestine with the function of stimulating the peristalsis of the stomach according to claim 3, wherein a first threading hole is formed between the inner wall of the first blind hole or the second blind hole and the outer wall of the region covered by one electrode plate on the silica gel tube body, and a second threading hole is formed between the inner wall of the second blind hole or the first blind hole and the outer wall of the region covered by the other electrode plate on the silica gel tube body.

5. The visual empty intestine with the function of stimulating the peristalsis of the stomach according to claim 1, wherein a third blind hole distributed along the central axis direction of the silica gel catheter is further formed in the upper end face of the silica gel catheter, the bottom of the third blind hole extends to the inner side of the eccentric air bag, and a first vent hole is formed between the inner wall of the third blind hole and the outer wall of the silica gel catheter, which is located in the inner area of the eccentric air bag.

6. The visual empty intestine with the function of stimulating the peristalsis of the stomach according to claim 1, wherein a fourth blind hole distributed along the central axis direction of the silica gel catheter is further formed on the end face of the upper end of the silica gel catheter, the bottom of the fourth blind hole extends to the inner side of the annular air bag, and a second ventilation hole is formed between the inner wall of the fourth blind hole and the outer wall of the silica gel catheter, which is positioned in the inner area of the annular air bag.

7. The visual jejunum tube with gastric peristalsis stimulation function according to claim 1, wherein the circumferential length of the balloon is half of the circumference of the outer wall of the silicone tube body, and the circumferential length of each ribbon-shaped conductive coating is half of the circumference of the outer wall of the silicone tube body.

8. A visual empty gut tube with peristaltic stimulation according to claim 1, characterized in that the vertical distance a between the proximal edges of the two electrode pads is 6-10 mm.

9. The visual empty intestine with gastric peristalsis stimulation function according to claim 1, wherein the guiding device further comprises a processing module in signal connection with the micro camera, a monitor in signal connection with the processing module, and a power module in electric connection with the processing module, wherein the power module is in electric connection with the monitor, the micro camera and the micro camera to provide electric energy.

10. A visual empty intestine tube placing method with a gastric peristalsis stimulation function is characterized by comprising the following steps:

S1: inserting a first air duct at the opening of the fourth blind hole and communicating the opening of the end part of the first air duct with an air source through an inflation valve; inserting a second air duct at the opening of the third blind hole and communicating the opening of the end part of the second air duct with an air source through an inflation valve; the upper ends of the two leads are respectively connected to the positive electrode and the negative electrode of the electric pulse generator and to two data acquisition ports of the gastric motility detector;

S2: extending the movable end of the guide wire device in the guide device into the silica gel catheter until the end part of the camera abuts against the transparent plug from the inside of the silica gel catheter; inserting one end of the transparent plug on the silica gel catheter from the nasal cavity of a patient and inserting the transparent plug into the stomach through the oral cavity and the esophagus; then the silica gel catheter is continuously inserted into the guide device, and the steerable snake bone structure on the guide device is utilized to enable the silica gel catheter to smoothly pass through the curve until the lower end of the silica gel catheter is positioned in the jejunum; in the process, the camera on the guiding device can transmit the real-time position of the lower end of the silica gel catheter to a monitor which is in communication connection with the camera through the processing module, a plurality of LED lamp beads arranged at the end part of the camera can provide illumination, and medical staff can accurately master the real-time position of the lower end of the silica gel catheter under the visual state by means of images in the monitor;

S3: opening an inflation valve connected with the first air duct to inflate the annular air bag through the first air duct and the fourth blind hole and the second vent hole, attaching the outer wall of the annular air bag to the inner wall of the jejunum after the annular air bag is inflated to increase the friction force between the silica gel catheter and the jejunum wall, and then pulling the guiding device outwards to prevent the guiding device from bringing the silica gel catheter out, so that each infusion hole is limited in the jejunum;

S4: when the guiding device is pulled, the position of the eccentric balloon is observed by a camera, and then the position of the silica gel catheter is slowly pulled in a visual state by means of images in a monitor until the eccentric balloon reaches the cardiac sphincter of the stomach;

S5, opening an inflation valve connected with the second air duct to inflate the eccentric air bag through the third blind hole and the first vent hole by means of the second air duct, slightly pressing the silica gel catheter on the inner wall of the cardiac sphincter by means of the inflated eccentric air bag, and then continuing to pull the silica gel catheter outwards, and further verifying that the eccentric air bag reaches the cardiac orifice after encountering resistance;

s6: continuously inflating the eccentric air bag to adjust the pressure to a proper value, so that the silica gel catheter is gradually deformed but nutrient solution can still pass through, and the outer walls of the two strip-shaped conductive coatings are directly contacted and clung to the cardiac sphincter;

s7: introducing a nutrient solution into the silica gel catheter to enter the jejunum of the patient through each infusion hole, and further, directly conveying nutrient substances into the intestinal tract of the patient through each infusion hole;

S8: after nutrient solution is introduced into the stomach of a patient, the gastric motility detector is started to enable two data acquisition ports on the gastric motility detector to be respectively connected with two electrode plates by means of two leads, and then the gastric motility detector can automatically acquire gastric motility data of the patient; starting the electric pulse generator and setting the stimulation parameters of the electric pulse generator according to the gastric power data acquired by the gastric power detector, wherein the stimulation parameters comprise stimulation intensity, frequency, pulse width and the like; then, the electric pulse generator alternately sends electric pulse signals to the two electrode plates according to a certain frequency, and the electric pulse signals can perform intermittent electric stimulation on the cardiac sphincter between the two electrode plates; since the cardia is the initial stage of the stomach macrobend, the inside of the cardia is a pacing point of the stomach, and the intermittent electric stimulation to the sphincter of the cardia can effectively promote the formation of gastric peristalsis, thereby promoting the recovery of gastric emptying capacity;

S9: after the nutrient solution is conveyed, and intermittent electric stimulation is carried out on the cardiac sphincter, the gastric power detector and the electric pulse generator are closed firstly, then the gas in the eccentric air bag and the annular air bag is emptied, finally the silica gel catheter is pumped out, and the guiding device can be recycled after the cleaning and disinfection treatment to avoid resource waste.