CN115708781A - Visual naso-gastrointestinal tube and visual assembly - Google Patents

Abstract

The present invention provides a visualized nasogastric tube and a visualization component, wherein the visualized nasogastric tube includes a guiding sheath, a multifunctional mirror and a nasogastric tube, the guiding sheath has a guiding channel, The multifunctional mirror is movably mounted on the guide channel, wherein the multifunctional mirror includes a head section and an imaging device installed on the top of the head section, and the bending of the head section can drive the The introducer sheath is bent so that the introducer sheath can be inserted through the nasal cavity to a predetermined position of the gastrointestinal tract of a human body under visualization. After the multifunctional mirror is drawn out, the nasogastric tube moves to a predetermined position along the guide channel under the guidance of the guide sheath, and then the guide sheath is further drawn out, and the nasal The gastrointestinal tube can be accurately inserted into the duodenum or jejunum to perform suction or perfusion of nutrient solution, which solves the problems of difficult and inaccurate intubation.

Description

Visualization Nasogastric Tube and Visualization Components

technical field

The invention relates to the field of medical equipment and supplies, in particular to a visualized nasogastric tube and a visualized component.

Background technique

The nasogastric tube is inserted into the patient's stomach through the nasal cavity, and even reaches the position of the duodenum or jejunum, and is a pathway for gastrointestinal decompression or enteral nutrition perfusion. In clinical practice, it is mainly used for some patients who cannot eat or patients who need gastrointestinal decompression. For example: major gastrectomy, oral surgery, esophageal cancer, laryngeal cancer, upper gastrointestinal bleeding, coma, etc., which affect swallowing function due to various reasons, or intestinal obstruction, acute gastrointestinal perforation peritonitis, acute poisoning gastric lavage, etc. For patients who need gastrointestinal decompression, in order to ensure that the patient takes in enough energy, protein and other nutrients to meet their needs for nutrition and treatment and prevent malnutrition. Clinically, it is necessary to use a nasogastric tube to meet the patient's need for food calories to promote recovery.

With the increase in the scope of application of nasogastric tubes and the increase in clinical needs, the current nasogastric tubes have gradually revealed some problems, because the nasogastric tubes are all in the order of nasal cavity-esophagus-stomach-duodenum In this process, on the one hand, due to physiological reasons, the path of the nasogastric and intestinal tube is in a curved state, and there are several physiological stenosis, which makes the intubation not so smooth; on the other hand, it is due to Medical staff often rely on experience to intubate, and it is difficult to accurately control the insertion depth, which often results in inappropriate insertion depth, so that the nasogastric tube cannot be placed in the predetermined position accurately, and even mis-insertion occurs Condition. Therefore, many problems occurred during the intubation process, such as: difficulty in intubation, insertion of the trachea, inability to insert the position of the duodenum or jejunum, or damage to the human mucous membrane or other parts during the intubation process, which brought great harm to the patient. It is more painful and cannot meet the clinical needs well. Therefore, it is urgent to solve the problems of difficulty and accuracy of nasogastric tube intubation.

Contents of the invention

An advantage of the present invention is to provide a visualized nasogastric tube and a visualization component. With the cooperation of the visualization component, the intubation operation of the nasogastric tube can be performed under visualization conditions, and the nasogastric tube can be accurately inserted into the predetermined position. The location solves the problem of low intubation accuracy and can better meet clinical needs.

Another advantage of the present invention is to provide a visualized nasogastric tube and a visualized component, wherein the visualized nasogastric tube can not only be inserted into the patient's stomach, but also can accurately reach the jejunum or duodenum, satisfying the needs of different patients. needs, a wide range of applications.

Another advantage of the present invention is to provide a visualized nasogastric tube and a visualized component. The nasogastric tube can be adjusted to actively bend, match the physiological structure of the human body, and pass through the narrow place smoothly, which is beneficial to prevent accidental injury to the mucous membrane or other tissues. The intubation can be successful at one time, which reduces the pain of the patient and solves the problem of difficult intubation.

Another advantage of the present invention is to provide a visualized nasogastric tube and visualization components. The multifunctional mirror not only meets the visualization requirements, but also has independent perfusion channels and suction channels, and can perform perfusion flushing and suction operations at the same time, satisfying certain treatment needs.

Another advantage of the present invention is to provide a visualized nasogastric tube and visualized component, wherein both the guide sheath and the multifunctional mirror have a certain degree of flexibility, and the two cooperate with each other, and the guide sheath can follow the multiple The bending of the functional mirror is bent to accurately reach the predetermined position under the condition of visualization. After the multifunctional mirror is removed, the nasogastric tube is placed through the guide sheath, and then the guide sheath is pulled out, and the The nasogastric tube was left in place to meet suction and nutritional needs.

Another advantage of the present invention is to provide a visualized nasogastric tube and visualized components, wherein the head section of the multifunctional mirror is designed as a rounded structure, which facilitates access to the passage of the human body and does not puncture tissues such as mucous membranes.

Another advantage of the present invention is to provide a visualized nasogastric tube and a visualized component. When the nasogastric tube or the multifunctional mirror is blocked, it is suitable for timely dredging through a dredging fitting that cooperates with each other without pulling out the tube. The dredging operation can be completed by taking out or replacing, which is simple and convenient.

Another advantage of the present invention is to provide a visualization nasogastric tube and visualization assembly, wherein the nasogastric tube cooperates with the introducer sheath, so that the entry of the nasogastric tube becomes easier, from the device It makes the operation more convenient.

Another advantage of the present invention is to provide a visualized nasogastric tube and visualized components, wherein the outer wall and inner wall of the introducer sheath are relatively smooth, which is convenient for insertion into the human body channel and easy for extraction, and the smooth inner wall is also convenient for multi-function Endoscopic and nasogastric tube access.

According to one aspect of the present invention, the present invention provides a visualized nasogastric tube, comprising:

an introducing sheath having a guiding channel;

A multifunctional mirror, the multifunctional mirror is movably mounted on the guide channel, wherein the multifunctional mirror includes a head section, a tube connected to the end of the head section and installed on the head An imaging device at the top of the section, the head section is flexibly connected to the front end of the introducer sheath, the movement of the head section is controlled to drive the movement of the introducer sheath, so as to visualize the guide sheath the sheath is inserted nasally into the intended location of the human gastrointestinal tract; and

A nasogastric tube, after the multifunctional scope is pulled out, the nasogastric tube is placed in the guiding channel, and under the guidance of the guiding sheath, the nasogastric tube is adapted to follow The guide channel is moved to a predetermined position, and the guide sheath is further withdrawn, so that the nasogastric tube can be precisely positioned at the predetermined position to perform corresponding operations.

Wherein the multifunctional mirror includes an adjustment unit, the adjustment unit includes at least one tractor and at least one traction line, the tractor is arranged at the end of the tube body, and the traction line is connected to the tractor and Between the head sections, the stretching length of the pulling wire is adjusted by manipulating the retractor to control the bending of the head section, and the front end of the guide sheath bends along with the bending of the head section.

The guide sheath includes a sheath wall and a first connecting piece arranged on the inner surface of the front end of the sheath wall, the guide channel is located inside the sheath wall, and the multifunctional mirror includes a A third connecting piece matched with the connecting piece, the third connecting piece is arranged on the outside of the head section, the first connecting piece and the third connecting piece are detachably connected, so that the multiple The functional mirror is detachably connected with the front end of the guiding sheath.

Wherein the first connecting part and the third connecting part are set as mutually matching threads, and the introducing sheath and the multifunctional mirror are connected or separated by rotating the sheath wall or the tubular body .

The introducing sheath includes a second connecting piece arranged at the end of the sheath wall, and the multifunctional mirror includes a fourth connecting piece matched with the second connecting piece, and the fourth connecting piece A piece is arranged at the middle and back section of the tube body, and is detachably connected with the fourth connecting piece through the second connecting piece, so that the multifunctional mirror is detachable from the rear end of the introducing sheath ground connection.

According to an embodiment of the present invention, wherein the second connecting part and the fourth connecting part are set as mutually matched threads, the introducing sheath and the introducing sheath are connected by rotating the sheath wall or the tubular body. The multifunction mirrors are connected or separated.

According to another embodiment of the present invention, wherein the second connecting piece and the fourth connecting piece are configured as a button body and a button groove, by manually operating the button body and the button groove to be fastened or separated, The guide sheath and the rear end of the multifunctional mirror are buckled detachably.

According to another embodiment of the present invention, the introducer sheath further includes an auxiliary connecting piece, the auxiliary connecting piece is movably sleeved on the outside of the tubular body, and the auxiliary connecting piece can be fastened or fixed by rotating the auxiliary connecting piece. Detach the introducer sheath and the posterior end of the multifunction scope.

The head section includes a long side and a short side, the imaging device is installed on the short side, the pulling wire is connected to the top of the long side, and the tractor is operated to control the pulling wire to the The head section generates tension, so that the head section bends toward the short side.

The multifunctional mirror has a perfusion channel and a suction channel, and the perfusion channel and the suction channel are independently arranged on the tube body and the head section, so as to perform infusion by connecting a perfusion pump and a suction device respectively. liquid and drainage.

The nasogastric tube includes a gastrointestinal tube main body and a flow channel, the flow channel is arranged inside the gastrointestinal tube main body, and the nutrient solution is sucked or perfused through the flow channel.

According to another aspect of the present invention, the present invention also provides a visualization component, comprising:

an introducing sheath having an introducing channel; and

A multifunctional mirror, the multifunctional mirror is movably mounted on the guide channel, wherein the multifunctional mirror includes a head section, a tube connected to the end of the head section and installed on the head An imaging device at the top of the section, the head section is detachably connected to the front end of the introducer sheath, the movement of the head section is controlled to drive the movement of the introducer sheath, so as to visualize the guide sheath The sheath is inserted into a predetermined position.

Wherein the multifunctional mirror includes an adjustment unit, the adjustment unit includes at least one tractor and at least one traction line, the tractor is arranged at the end of the tube body, and the traction line is connected to the tractor and Between the head sections, the stretching length of the pulling wire is adjusted by manipulating the retractor to control the bending of the head section, and the front end of the guide sheath bends along with the bending of the head section.

The guide sheath includes a sheath wall and a first connecting piece arranged on the inner surface of the front end of the sheath wall, the guide channel is located inside the sheath wall, and the multifunctional mirror includes a A third connecting piece matched with the connecting piece, the third connecting piece is arranged on the outside of the head section, the first connecting piece and the third connecting piece are detachably connected, so that the multiple The functional mirror is detachably connected with the front end of the guiding sheath.

Wherein the first connecting part and the third connecting part are set as mutually matching threads, and the introducing sheath and the multifunctional mirror are connected or separated by rotating the sheath wall or the tubular body .

The introducing sheath includes a second connecting piece arranged at the end of the sheath wall, and the multifunctional mirror includes a fourth connecting piece matched with the second connecting piece, and the fourth connecting piece A piece is arranged at the middle and back section of the tube body, and is detachably connected with the fourth connecting piece through the second connecting piece, so that the multifunctional mirror is detachable from the rear end of the introducing sheath ground connection.

According to an embodiment of the present invention, wherein the second connecting part and the fourth connecting part are set as mutually matched threads, the introducing sheath and the introducing sheath are connected by rotating the sheath wall or the tubular body. The multifunction mirrors are connected or separated.

According to another embodiment of the present invention, wherein the second connecting piece and the fourth connecting piece are configured as a button body and a button groove, by manually operating the button body and the button groove to be fastened or separated, The guide sheath and the rear end of the multifunctional mirror are buckled detachably.

According to another embodiment of the present invention, the introducer sheath further includes an auxiliary connecting piece, the auxiliary connecting piece is movably sleeved on the outside of the tubular body, and the auxiliary connecting piece can be fastened or fixed by rotating the auxiliary connecting piece. Detach the introducer sheath and the posterior end of the multifunction scope.

The head section includes a long side and a short side, the imaging device is installed on the short side, the third connecting member is arranged on the outside of the long side, and the pulling wire is connected to the long side At the top of the side, operate the retractor to control the traction wire to generate tension on the head section, so that the head section bends toward the short side.

The multifunctional mirror has a perfusion channel and a suction channel, and the perfusion channel and the suction channel are independently arranged on the tube body and the head section, so as to perform infusion by connecting a perfusion pump and a suction device respectively. liquid and drainage.

Wherein the visualization component sequentially passes through the nasal cavity, esophagus and stomach to the duodenum or jejunum, so as to guide and position the naso-gastrointestinal tube to the duodenum or jejunum.

Description of drawings

Fig. 1 is a schematic perspective view of a visualization component included in a visualization nasogastric tract tube according to a preferred embodiment of the present invention.

Fig. 2 is a partial cross-sectional schematic diagram of the visualization component included in the visualization nasogastric tract tube according to the above-mentioned preferred embodiment of the present invention.

Fig. 3 is a three-dimensional structural schematic diagram of a visualized nasogastric and intestinal tube including the guide sheath and the nasogastric and intestinal tube sleeved according to the above-mentioned preferred embodiment of the present invention.

Fig. 4 is a schematic diagram of the upright and bent state changes of the visualization component according to the above-mentioned preferred embodiment of the present invention.

Fig. 5 is a partial structural schematic diagram of the visualization nose kit according to the above-mentioned preferred embodiment of the present invention.

Fig. 6 is a partial structural schematic diagram of a variant implementation of the visualization component according to the above-mentioned preferred embodiment of the present invention.

Fig. 7 is a schematic diagram of the application of the visualization component included in the visualization naso-gastrointestinal tube according to the above-mentioned preferred embodiment of the present invention.

Fig. 8 is a schematic diagram of another application of the visualization component included in the visualization naso-gastrointestinal tube according to the above-mentioned preferred embodiment of the present invention.

Fig. 9 is a schematic diagram of another application of the visualized naso-gastrointestinal tube according to the above-mentioned preferred embodiment of the present invention.

Fig. 10 is a schematic diagram of another application of the visualized naso-gastrointestinal tube according to the above-mentioned preferred embodiment of the present invention.

Fig. 11 is a schematic perspective view of the three-dimensional structure of the visualized naso-gastrointestinal tube according to yet another preferred embodiment of the present invention.

Fig. 12 is a partial structural schematic diagram of the visualized naso-gastrointestinal tube according to yet another preferred embodiment of the present invention.

Detailed ways

The following description serves to disclose the present invention to enable those skilled in the art to carry out the present invention. The preferred embodiments described below are only examples, and those skilled in the art can devise other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present invention.

Those skilled in the art should understand that in the disclosure of the present invention, the terms "vertical", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present invention and simplified description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, so the above terms should not be construed as limiting the present invention.

It can be understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element The quantity can be multiple, and the term "a" cannot be understood as a limitation on the quantity.

Referring to accompanying drawings 1 to 10, a visualized nasogastric tube according to a preferred embodiment of the present invention is illustrated. The visualized naso-gastrointestinal tube set includes a visualization component 1 and a naso-gastrointestinal tube 30, with the assistance and cooperation of the visualization component 1, the naso-gastrointestinal tube 30 can be guided accurately under the visualization condition To the predetermined position, the damage to tissues and organs and the pain brought to the patient by the current blind insertion are avoided.

In the present invention, under the guidance of the visualization component 1, the nasogastric tube 30 passes through the nasal cavity-throat-esophagus-stomach in sequence, and then reaches the duodenum or jejunum under visualization conditions, feeding the intestinal tract. Infusion of nutrient solution or drugs in order to achieve better therapeutic purposes and meet the needs of different patients. At the same time, it solves the problem that the traditional long nasogastric tube cannot reach the intestinal tract and can not accurately reach the intestinal tract or enter the intestinal tract through blind insertion. potential risks.

Wherein the visualization assembly 1 includes a guide sheath 10 and a multifunctional mirror 20, the multifunctional mirror 20 is detachably mounted on the guide sheath 10, by adjusting the multifunctional mirror 20, the guide The introduction sheath 10 bends along with the bending of the multifunctional mirror 20, and the visualization component 1 passes through the nasal cavity-pharynx-esophagus-stomach-duodenum or jejunum in turn, and then withdraws from the multifunctional mirror 20 for indwelling The introducer sheath 10, and then insert the gastrointestinal tube 30 into the duodenum or jejunum along the guide sheath 10 under the guidance of the introducer sheath 10, and exit the introducer sheath 10. Indwelling the nasogastric tube 30 for work.

The multi-function mirror 20 actively bends, drives the guide sheath 10 to bend passively, and then can place the guide sheath 10 to a preset position under visualization conditions, wherein the preset position or predetermined position refers to gastric Portion, jejunum or duodenum, you can choose according to your needs. In addition, the multifunctional mirror 20 can perform perfusion and suction work at the initial stage of placement, so as to balance the pressure of the stomach and intestinal tract. When it is necessary to indwell for a period of time, the multifunctional mirror 20 is withdrawn, and the nasogastric tube 30 is inserted to a preset position according to a predetermined route. Under the guidance of the visualization component 1, it is not only beneficial to prevent blind insertion from causing damage to the tissue, but also helps to pass through physiological stenosis to prevent mis-insertion, and can reach the twelve fingers that are difficult to reach with a gastric tube under visual conditions. Intestine or jejunum, it is beneficial to the treatment and prognosis of intestinal diseases.

In addition, the visualization component also includes a hand-held part 40, which is connected to the end of the visualization component 1, wherein the hand-held part 40 is preferably arranged at the end of the multifunctional mirror 20, so as to pass through the The handle part 40 detachably connects the end or the middle and back section of the introducer sheath 10 with the end or the middle and back section of the multifunctional mirror 20, so that the visualization assembly 1 can be moved through the handle 40 into the human body.

Specifically, the introducer sheath 10 has a guide channel 100 and a sheath wall 11, the guide channel 100 runs through the inside of the sheath wall 11 longitudinally, that is, the sheath wall 11 surrounds the guide outside of channel 100 . The outer side of the sheath wall 11 is a smooth surface, which is suitable for passing through the nasal cavity, esophagus, and stomach to reach the duodenum or jejunum, so as to prevent the mucous membrane from being scratched.

The introducing sheath 10 also has a guiding outlet 101 and a guiding inlet 102, the guiding outlet 101 and the guiding inlet 102 are respectively located at the head end and the end of the guiding channel 100, and are connected with the guiding channel 100. The guide channel 100 is connected. The multifunctional mirror 20 and the nasogastric tube 30 are adapted to enter the guiding channel 100 through the guiding inlet 102, reach or pass through the guiding outlet 101, and when withdrawing from the guiding sheath At 10 o'clock, the introducer sheath 10 is withdrawn from the body along the nasogastric tube 30. During the withdrawal process, the guide inlet 102, the guide channel 100 and the guide outlet 101 are sequentially followed by the guide outlet 101. The outside of the nasogastric tube 30 is withdrawn out of the body along the nasogastric tube 30 .

The multifunctional mirror 20 includes a head section 21 and a tube body 22, the head section 21 is connected to the head of the tube body 22, the head section 21, the tube body 22 and the guide sheath 10 The sheath wall 11 is made of flexible material so as to be easy to bend. In the present invention, the direction of insertion into the human body is defined as the direction of the head end or the direction of the top end, and after being inserted into the human body, the direction left outside the nasal cavity is the direction of the end. Therefore, when the multifunctional mirror 20 is inserted into the human body passage, the head section 21 and a part of the tube body 22 enter the human body, and the end of the tube body 22 is left outside the nasal cavity of the human body.

In the present invention, the head section 21 and the pipe body 22 can be manufactured integrally, and the two are fixedly connected. The head section 21 and the tube body 22 can also be manufactured separately, and then the head section 21 can be detachably connected to the front end of the tube body 22, so that the two can be detachably connected for easy replacement. The head section 21 or the tube body 22 is also convenient for cleaning and disinfection.

The introducer sheath 10 also includes a first connecting piece 12 and a second connecting piece 13, the first connecting piece is arranged on the top end of the sheath wall 11 or the inner wall of the upper middle section, that is, the first connecting piece 12 can be produced integrally with the sheath wall 11 . The second connecting member 13 is disposed at the rear end of the introducing sheath 10 to connect with the multifunctional mirror 20 .

The multifunctional mirror 20 further includes a third connecting part 23 and a fourth connecting part 24, the third connecting part 23 is arranged on the outside of the head section 21, and the fourth connecting part 24 is arranged on The end or the second half of the tubular body 22 is connected through the matching connection between the first connecting piece 12 and the third connecting piece 23, so that the head section 21 is detachably connected to the sheath wall 11 , and further through the matching connection between the second connecting piece 13 and the fourth connecting piece 24, the tube body 22 is detachably connected to the end of the visualization assembly 1 with the sheath wall 11, that is The two are detachably connected with the outside of the human body.

The multifunctional mirror 20 further includes an imaging device 25, wherein the imaging device 25 includes a camera device 251 and an image return device 252 connected to the camera device 251, and the camera device 251 can be implemented as an electronic mirror , is installed on the top of the head section 21, the image return device 252 can be implemented as an optical fiber, and the image of the camera device 251 is transmitted back to a display connected outside the body, so as to travel on the multifunctional mirror 20 Real-time and dynamic imaging during the process, so that the multifunctional mirror 20 can accurately reflect the front field of view to be entered, so that the medical staff can observe the surrounding environment in the body, and then operate under visualization conditions to improve the accuracy of the operation.

Therefore, the detachable connection between the multifunctional mirror 20 and the guide sheath 10 makes the guide sheath 10 and the multifunctional mirror 20 be put into the human body together. Under the action of the bending drive, the introducer sheath 10 can be positioned to a predetermined position under the condition of visualization, so that the next step along the guide sheath 10 can accurately and smoothly insert the nasogastric tube 30 into the tenth place. Duodenum or jejunum location.

It is worth mentioning that, in the present invention, the first connection part 12 is detachably connected to the third connection part 23, and the connection between the second connection part 13 and the fourth connection part 24 is detachable. It is also detachably connected, so that the multifunctional mirror 20 is detachably and rotatably sleeved inside the guide sheath 10, that is, it can be implemented so that the two can be separated by rotation, for example, by rotating the The multifunctional mirror 20 can be separated from the guide sheath 10 , or the two can be separated by rotating the guide sheath 10 . In this embodiment, the multifunctional mirror 20 is preferably rotated to separate it from the guide sheath 10. Since the multifunctional mirror 20 is located inside the guide sheath 10, the rotation of the multifunctional mirror 20 will not If it touches the mucous membrane of the human body or any tissue, it will not cause harm to the human body.

As shown in FIG. 1 and FIG. 2 , an embodiment of the connection between the introducing sheath 10 and the multifunctional mirror 20 of the present invention is shown. In this embodiment, the connection between the first connecting part 12 and the third connecting part 23 , and between the second connecting part 13 and the fourth connecting part 24 are implemented as screw connections. The first connecting piece 12 is matched with the third connecting piece 23, and the second connecting piece 13 is matched with the fourth connecting piece 24. When the multifunctional mirror 20 is rotated in one direction, the When the tube body 22 is used, the first connector 12 and the third connector 23, the second connector 13 and the fourth connector 24 can be separated at the same time, that is, the introducer sheath 10 is separated from the multifunctional mirror 20.

Threads are respectively arranged on the outside of the head section 21, the outside of the end of the tubular body 22 or the outside of the middle and back section, the inside of the front end of the sheath wall 11 and the inside of the middle and back section, so as to be respectively arranged in the multifunctional The threads of the mirror 20 match.

In addition, when the threaded connection is implemented, the thread can also be implemented at any part where the tubular body 22 and the sheath wall 11 are sleeved, and is not limited by the rear end and front end in the above embodiment, and can also be in the middle Set the thread, and you can also set multiple turns and multiple threads.

In addition to the thread, it is also possible to use a buckle or a slot to connect, the setting position is the same as that of the thread, and the buckle and the slot are connected or opened by axial rotation. Those skilled in the art can understand that, under the concept of the present invention, the guiding sheath 10 and the multifunctional mirror 20 can also have a similar connection method, as long as it is easy to connect and separate.

Further, other connection manners may also be implemented between the second connecting member 13 and the fourth connecting member 24 . As shown in FIG. 5 , another embodiment of the connection between the guide sheath 10 and the multifunctional mirror 20 is shown. In this embodiment, the first connecting member 12 and the third connecting member 23 are still threaded, and the connection method between the guiding sheath 10 and the end of the multifunctional mirror 20 is changed. That is to say, the second connecting piece 13A and the fourth connecting piece 24A are implemented as a fastening mode, and the connection between the second connecting piece 13A and the fourth connecting piece 24A is manually connected or opened. connection between.

The second connector 13A is arranged at the end of the introducer sheath 10 , and the fourth connector 24A is arranged at the end or the middle and rear section of the introducer sheath 10 . For example, at least one button body 131A is set at the end of the sheath wall 11, and at least one button groove 241A is set at the end or the middle and rear section of the tube body 22 of the multifunctional mirror 20, so that the button body 131A and The button groove 241A matches, and the button body 131A is detachably connected to the button groove 241A through manual operation.

When the buckle groove 241A is arranged at the end of the tubular body 22, the head section 21 should be flush with the head end of the introducer sheath 10, or slightly protrude from the end of the introducer sheath 10. head end, so as to ensure that the multifunctional mirror 20 can insert the introducer sheath 10 to a predetermined position under visualization.

The buckle groove 241A can also be provided in multiples, located at different positions of the tube body 22, so as to adjust the multifunctional mirror 20 to move along the introducer sheath 10 and change the sleeve length.

As shown in FIG. 6 , it is another embodiment of the connection between the guide sheath 10 and the multifunctional mirror 20 . In this embodiment, the connection between the first connecting part 12 and the third connecting part 23 is still implemented as threaded connection, and the connection method between the guiding sheath 10 and the end of the multifunctional mirror 20 is modified.

An auxiliary connecting piece 14B is movably socketed on the tubular body 22, and further socketed on the end portion of the sheath wall 11 of the introducer sheath 10, and the auxiliary connecting piece 14B is rotated so that the The introducing sheath 10 is detachably connected with the multifunctional mirror 20 . Wherein the second connector 13B is arranged at the end of the introducer sheath 10, and the second connector 13B is divided into multiple by a plurality of interval grooves 130B, and the plurality of second connectors 13B can Moving toward the direction of the interval groove 130B, that is, reducing the size of the interval groove 130B by pressing the second connecting member 13B.

The auxiliary connecting piece 14B is used as a fastener and is sleeved on the outside of the second connecting piece 13B. By rotating the auxiliary connecting piece 14B, the second connecting piece 13B is squeezed to narrow the interval groove 130B. At this time, since the tube body 22 is socketed inside the introducer sheath 10 , that is, the second connecting member 13B is socketed outside the tube body 22 . Under the action of the auxiliary connecting piece 14B, the shrinkage of the spacer groove 130B makes the second connecting piece 13B clamp the tube body 22, thereby making the multifunctional mirror 20 and the guide sheath 10 phase connections. When the auxiliary connecting piece 14B is rotated, the spacing groove 130B can be restored to its original size, and the tight state of the second connecting piece 13B on the tube body 22 can be changed.

In this embodiment, the fourth connecting piece may not be provided, and the second connecting piece 13B only needs to hug the tube body 22 on the outside of the tube body 22 , or it may be placed on the outside of the tube body 22 A fourth connecting piece is provided outside to cooperate with the second connecting piece 13B and the auxiliary connecting piece 14B to connect the introducing sheath 10 and the multifunctional mirror 20 .

Those skilled in the art can understand that, in the case of setting the auxiliary connecting piece 14B, the second connecting piece and the fourth connecting piece can be set as engaging parts, by rotating the auxiliary connecting piece so that The second connecting piece is engaged with the fourth connecting piece, so that the introducing sheath 10 is connected with the multifunctional mirror 20 .

Wherein the second connecting piece 13B is still arranged at the end of the introducer sheath 10, the fourth connecting piece 24B is arranged at the tube body 22 of the multifunctional mirror 20, and then rotated in the opposite direction. The auxiliary connecting piece 24B separates the second connecting piece 13B from the fourth connecting piece 24B, thereby separating the introducer sheath 10 from the multifunctional mirror 20 .

In addition, the auxiliary connector 14B can also be sleeved on the end of the introducer sheath 10, and can be rotatably arranged at the end of the sheath wall 11, and the introducer sheath 10 and the end of the introducer sheath 10 can be fastened by rotation. the multifunctional mirror 20, and separate the introducer sheath 10 and the multifunctional mirror 20 by rotating.

With reference to accompanying drawing 1 to accompanying drawing 6, described multifunctional mirror 20 also comprises an adjustment unit 26 and a tube wall 27, and described tube wall 27 forms the tube wall of described head section 21 and described tube body 22, and described The adjustment unit 26 is embedded in the tube wall 27 and connected to the head section 21 to control the bending of the head section 21 .

Wherein the adjustment unit 26 includes a tractor 261 and a traction line 262, wherein the tractor 261 is installed on the end of the tube body 22 of the multifunctional mirror 20, and the traction line 262 is connected to the Between the head section 11 and the retractor 261 , by operating the retractor 261 , the stretching state of the pull wire 262 is controlled, so as to control the bending or straightening of the head section 11 . The bending of the head section 21 drives the head of the introducer sheath 10 to bend so as to position the introducer sheath 10 .

Wherein the pulling wire 262 can be implemented as a steel wire, and the pulling device 261 is implemented in the form of a roller or a dial or a button, and the length of the pulling wire 262 can be changed by controlling the pulling device 261 . In this embodiment, the pull wire 262 is wound around the puller 261, and the state of the pull wire 262 being wound around the puller 261 is changed by moving the puller 261, thereby changing the pulling wire 262 to generate a corresponding pulling force on the head section 21 to control the bending angle of the head section 21 .

In order to better control the bending degree and bending direction of the head section 21, this embodiment is implemented as two pulling wires 262 and two pulling devices 261, and the two pulling wires 262 are respectively connected to the On both sides of the head section 21, the two tractors 261 are respectively controlled. That is to say, the two retractors 261 independently control the two pull wires 262 to respectively control the bending states of different positions of the head section 21 to meet actual clinical needs.

As shown in Figure 4, the different states of the head section 21, the head section 21 can be in a naturally straightened state, and when inserted into the natural passage of the human body, the head section 11 in the upright state will touch the mucous membrane of the human body passage or surrounding tissue. For example, when the visualization assembly 1 passes through the physiological stenosis of the esophagus, the visualization assembly 1 in an upright state is not easy to pass through, and there is a risk of being inserted into the trachea. At this time, it is necessary to adjust the retractor 261 to The length of the pulling wire 262 is changed, and under the condition of visualization, the head section 11 is bent, and since the head section 11 is connected to the sheath wall 11 of the introducer sheath 10, the guide sheath 10 is driven. The guiding sheath 10 is curved. Therefore, the introducer sheath 10 can smoothly pass through the physiological stricture of the esophagus under the drive of the multifunctional mirror 20, and enter the esophagus accurately.

In addition, when the guide sheath 10 and the multifunctional mirror 20 pass through the bifurcation of the esophagus and the trachea, with the assistance of the imaging device 25, medical personnel can find the guide sheath 10 and the multifunctional mirror 20 in time. Therefore, the length of the pulling wire 262 can be adjusted in time by operating the pulling device 261 to control the bending of the head section 21 and drive the head of the guide sheath 10 Bending means that the entire head of the visualization component 1 is properly bent to accurately enter the esophagus and prevent it from entering the trachea. If it enters the trachea by mistake, it will cause the patient to cough and have difficulty breathing. If the patient is in a coma, if it is not detected in time, it may be life-threatening. Therefore, compared with the traditional blind insertion, it can be inserted accurately and effectively reduces the risk.

On the other hand, when the visualization component 1 enters the fundus of the stomach, the medical staff can observe the position of the head end of the visualization component 1 with the assistance of the imaging device 25 and adjust it in time so that it Smooth access to the duodenum or jejunum under visualization and controlled access length. At the same time, the bending of the head section 21 is controlled by the traction unit 26 to control the bending of the head of the whole visualization assembly 1 , so as to precisely position the introducer sheath 10 in a proper position. After the introducer sheath 10 is inserted into a predetermined position, the multifunctional mirror 20 is drawn out to replace the nasogastric tube 30 so that the nasogastric tube 30 is accurately positioned along the guide sheath 10. inserted into the preset position. That is to say, the nasogastric tube 30 is inserted to a predetermined position under the guidance of the introducer sheath 10, and the introducer sheath 10 is put into the predetermined position under the condition of visualization, which avoids It solves the traditional problems of difficult intubation, difficult intubation, difficulty in one-time insertion, repeated intubation, and difficulty in reaching the predetermined position of intubation, which reduces the pain of patients and improves the success rate.

It is worth mentioning that corresponding scales are provided on the outer side of the sheath wall 11 of the introducer sheath 10 to facilitate observation by medical personnel. Since the first physiological stenosis of the esophagus is about 15 cm away from the incisors, the second physiological stenosis is about 25 cm away from the incisors, and the third physiological stenosis is about 40 cm away from the incisors, therefore, the guide sheath 10 with scales can help medical staff to do a good job of responding. Records to assist treatment, can also help medical staff to adjust according to different patients, so as to facilitate research and better targeted treatment.

The multifunctional mirror 20 has a perfusion channel 201 and a suction channel 202, wherein the perfusion channel 201 and the suction channel 202 are independently arranged in the tube wall 27, and from the end of the tube body 22 It extends longitudinally to the top of the head section 11, so as to communicate with the internal environment for liquid injection and suction, and maintain the pressure of the gastrointestinal tract in a relatively balanced state.

In this embodiment, a perfusion pump can be connected to the infusion channel 201 for liquid injection, and a suction device can be connected to the suction channel 202 to realize the suction and discharge operation, wherein the size of the suction channel 202 is larger than the The size of the liquid injection channel 201 can realize better liquid injection and liquid discharge under the condition of ensuring the strength requirement of the multifunctional mirror 20 . Because the multifunctional mirror 20 can perform certain operations, it can perform nutrient solution perfusion, cleaning solution perfusion and suction of stomach contents. Since there will be solid substances such as food residues, viscous substances, or liquid-solid mixtures in the stomach, the suction channel 202 with a larger size can smoothly suck out these substances to prevent blockage. Even if there is a slight blockage, the larger size of the suction channel 202 can facilitate unblocking by a guide wire.

In addition, in this embodiment, the perfusion channel 201 can not only inject liquid to clean the gastrointestinal tract, but also clean the imaging device 25 . Therefore, in this embodiment, the perfusion channel 201 is set near the imaging device 25, so as to wash the imaging device 25, keep a clear field of view all the time, and observe the internal environment in real time, so that medical staff can Always carry out a series of operations under visual conditions, increasing safety.

The head section 21 is preferably implemented as a streamlined structure, including a long side 211 and a short side 212, and the two pulling wires 262 are respectively connected to both sides of the top of the long side 211, so that when adjusting the puller 261 , the long side 211 connected to the sheath wall 11 bends toward the short side 212 , thereby driving the bending of the introducer sheath 10 .

It can also be set as one pulling wire 262, which is connected to the middle or other position of the long side 211 of the head section 21, and can control the bending of the head section 21. Therefore, the pulling wire 262 The number and connection positions are not limited by the above specific embodiments.

According to another embodiment of the present invention, as shown in FIG. 12 , the perfusion channel 201D is set to the side of the tube wall 27, that is, the perfusion channel 201D is located on the side of the long side 211 tube wall, wherein the top of the perfusion channel 201D does not reach the top of the head section 21 . When the liquid is injected through the perfusion channel 201D, the liquid will form a circulation around the long side 211, that is, after the liquid is injected, the liquid will pass through the perfusion channel 202D under the suction of the negative pressure of the suction channel 202D. After the channel 201D is injected, it bypasses the long side 211, and then enters the suction channel 202D, and then carries the contents of the gastrointestinal tract and is discharged from the body, which can clean up the contents of the gastrointestinal tract, such as food residues, etc. It can maintain the balance of the pressure in the cavity of the gastrointestinal tract and meet the various needs of various patients.

In this embodiment, the perfusion channel 201D can be arranged on the side of the tube body 22 or on the side of the head section 21, and the perfusion channel 201D and the suction channel 202D are both The multifunctional mirrors 20 are arranged vertically and independently of each other.

It is worth mentioning that the design of the different lengths of the head section 21 is not only conducive to bending, but also conducive to water injection and drainage to form a circulation. For example, in the above-mentioned embodiment, the perfusion channel 201 is arranged on the short side 212, the suction channel 202 is arranged on the long side 211, and extends to the short side, and injects from the perfusion channel 201. After washing the lens, suck it out from the suction channel 202. For example, in another embodiment described above, the perfusion channel 201D is provided on the tube body 22 where the long side 211 is located, and the suction channel 202D can be provided on the long side 211 and the short side 212 at the same time. , can also be arranged only on the long side 211, so that a circular flow is formed between the perfusion channel 201D and the suction channel 202D, so as to achieve a better suction effect.

It is worth mentioning that, in the present invention, the size of the suction channel 202/202D is larger than that of the perfusion channel 201/201D, and the cross-section of the two can be circular or elliptical.

In addition, the imaging device 25 is disposed on the short side 212 for easy washing, and the long side 211 is located within the field of view of the imaging device, enabling more accurate visual insertion.

In addition, the third connecting member 23 can be arranged only on the outside of the long side 211, or can be arranged on the outside of the long side 211 and the short side 212 at the same time, or can be arranged on the outside of the head section 21. The lower side, that is to say, the limitation of the specific embodiment of the specific position of the third connecting member 23, can connect the guide sheath 10 with the multifunctional mirror 20, and the bending of the head section 21 can It only needs to drive the head end of the introducer sheath 10 to bend, and it is convenient to separate the two.

The nasogastric tube 30 includes a gastrointestinal tube main body 31, the size of the gastrointestinal tube main body 31 is matched with the guide channel 100 of the introducer sheath 10, so as to be placed into the guide channel 100, and enter the predetermined position along the guide channel 100. Depending on the guidance and positioning of the introducer sheath 10, the nasogastric tube 30 can smoothly enter the human body passage and reach the duodenum or jejunum.

The nasogastric tube 30 has a flow channel 300, which is longitudinally arranged inside the gastrointestinal tube body 31, so as to facilitate suction and nutrient solution perfusion through the flow channel 300 to meet clinical treatment needs .

It is worth mentioning that the visualization component 1 provided by the present invention is also suitable for cooperation with traditional nasogastric tubes for visualization guidance. The multifunctional mirror 20 included in the visualization component 1 can undertake a part of the work of injecting and absorbing liquid at the initial stage of insertion, but expensive mirrors are not suitable for long-term placement in the human stomach or in the duodenum or jejunum. It can be replaced by the traditional nasogastric tube or the nasogastric tube of the present invention, which can not only solve the problems of traditional tube placement, blind insertion, damaged tissue, and difficulty reaching the duodenum or jejunum, but also can Reduce costs and meet a variety of clinical needs.

In addition, the multifunctional mirror 20 may not have any channels, and does not play the role of liquid injection and liquid drainage, but serves as a bendable mirror to guide the introducer sheath 10 to a predetermined position of the human gastrointestinal tract, and then pull out the The multifunctional mirror 20, indwelling the guide sheath 10, and further placing the nasogastric tube 30 into the guiding channel 100, so that the nasogastrointestinal tube 30 moves along the guiding channel 100 When the introducing sheath 10 is positioned, the introducing sheath 10 is withdrawn, and the nasogastric tube 30 is inserted to a predetermined position. That is to say, the nasogastric tube 30 is inserted into a predetermined position under the guidance of the multifunctional scope 20 and the guide sheath 10 to perform corresponding operations.

On the other hand, a snake bone may also be provided inside the multifunctional mirror 20, and its bending is controlled by the snake bone. The multifunctional mirror 20 can also not be bent, that is, the bendable head section 21 and the adjusting unit 26 or snake bone for adjusting its curvature are not provided, so that the multifunctional mirror 20 can only play a visualization role. Under certain conditions, slowly adjust the position of the head segment to avoid mis-insertion at the bifurcation and tissues at the physiological stenosis. Compared with the active bending of the multifunctional mirror 20, the insertion is slightly more difficult and requires higher requirements for the operator.

What is more worth mentioning is that, under the conception of the present invention, the visualization component 1 can also be used for positioning and guiding other catheters that need to be placed. That is to say, under the positioning and guidance of the visualization component 1 in the human body channel, the difficult problem of tube placement in other cavity positions can be solved.

As shown in Figures 7 to 10, the introducer sheath 10, the multifunctional mirror 20 and the nasogastric tube 30 included in the visualized nasogastric tube can play a role in guiding, injecting and draining. The action of fluid is taken as an example to illustrate the application process of the visualization component 1 and the visualization nasogastric tube.

In the above embodiments of the present invention, the visualization component 1 can reach different locations to perform corresponding operations under visualization conditions. As shown in Fig. 7 and Fig. 8, when intragastric decompression is required, the visualization component 1 can be inserted into the stomach, and a negative pressure environment is formed through the suction channel 202 to suck the contents of the stomach. The gastric content is sucked out through the suction channel 202 . At this time, the multifunctional mirror 20 may not be adjusted so that the head section 21 is flush with the front end of the guide sheath 10 for suction, or the multifunctional mirror 20 and the guide sheath 10 may be sucked together. 10 are separated, and then the ends of the two are fixed, so that the head section 21 of the multifunctional mirror 20 is stretched out to the front of the guide sheath 10 for suction, wherein the head section 21 of the inclined structure is conducive to the formation of circulation, The stomach contents are sucked out more smoothly.

At this time, after the visualization component 1 is placed in the stomach, according to clinical needs, for example, the nasogastric tube 30 can be placed in an appropriate position in the stomach according to clinical needs. After the introducer sheath 10 is positioned at an appropriate position in the stomach, the multifunctional mirror 20 is drawn out, and then the nasogastric tube 30 is inserted along the guide channel 100 of the introducer sheath 10. When the nasal After the gastrointestinal tube 30 is inserted into an appropriate position, the nasogastrointestinal tube 30 is fixed, the introducer sheath 10 is withdrawn, and the nasogastrointestinal tube 30 is left in place.

In addition, it is worth mentioning that when the indwelling nasogastric tube 30 is blocked during application, it can be unblocked or replaced. When replacing, insert the introducer sheath 10 along the nasogastric tube 30 to the position where the nasogastric tube 20 is located, fix the introducer sheath 10, and extract the blocked nasogastric tube tube 30, and then put it into a dredged or new nasogastric tube, and then pull out the introducer sheath 10. According to the method of the invention, the blind insertion of replacement is avoided, which is safer.

As shown in FIGS. 9 and 10 , when the visualization component 1 is inserted into a predetermined position under visualization conditions, such as reaching the duodenum or jejunum, the tube body 22 is axially rotated so that the introducer sheath 10 is separated from the multifunctional mirror 20. After separation, slowly draw out the multifunctional mirror 20, so that the multifunctional mirror 20 gradually leaves the guide channel 100 of the guide sheath 10, and indwells the guide sheath 10 for the following The insertion of the nasogastric tube 30 provides access and plays a positioning role.

Further, the nasogastric tube 30 is inserted into the guiding channel 100 , and inserted along the guiding sheath 10 to the top of the guiding sheath 10 . That is to say, the 10 positions of the introducer sheath and the nasogastric tube 30 provide a positioning channel, which effectively prevents the nasogastric tube 30 from touching other tissues in the human body passage, and avoids the inconvenience caused by blind insertion to the patient. Multiple risks make the insertion of the nasogastric tube 30 smoother.

After the nasogastric tube 30 is inserted into the intestinal tract, the positioning of the introducer sheath 10 has been completed, and the nasogastric tube 30 is fixed. At this time, the guide sheath 10 can be slowly withdrawn. , indwelling the nasogastrointestinal tube 30 to perform subsequent operations.

In the present invention, with the assistance of the multifunctional mirror 20, the guide sheath 10 can be inserted to a predetermined position under visualization conditions, and after the multifunctional mirror 20 is pulled out, the positioned guide sheath 10 The sheath 10 provides an access channel for the nasogastric tube 30 and plays a positioning role, enabling the nasogastric tube 30 to reach the duodenum or The location of the jejunum expands the scope of application and better meets clinical needs.

In addition, due to the smooth surface of the sheath wall 11 , the insertion and extraction of the introducer sheath 10 are smooth, without causing damage to the human body and improving safety.

It is worth mentioning that the present invention provides another embodiment for the connection between the introducing sheath 10 and the multifunctional mirror 20 , as shown in FIG. 11 . In this embodiment, the inner wall of the sheath wall 11C and the outer side of the tube wall 27C are deformed, the multifunctional mirror 20C and the guide sheath 10C are not provided with corresponding connectors, and the guide The sheath 10C matches the size of the multifunctional mirror 20C, so that the multifunctional mirror 20C can be detachably socketed in the guide channel 100C inside the guide sheath 10C, and the outside of the tube wall 27C It fits with the inside of the sheath wall 11C, for example, the two can fit together through friction, and then rotate the tube body 22C so that the multifunctional mirror 20C enters or moves out of the sheath wall while rotating. The guide channel 100C of the introducer sheath 10C.

In this embodiment, similar to the above-mentioned embodiment, the head section 21C still changes the bending direction and degree through the pulling wire 262C, and the imaging device 251C included in the imaging device 25C and the image feedback The transmission device 252C observes the internal environment in real time, cleans the imaging device 251C through the perfusion channel 201C, and performs suction through the negative pressure environment formed by the suction channel 202C.

It should be understood by those skilled in the art that the embodiments of the present invention shown in the foregoing description and drawings are only examples and do not limit the present invention. The objects of the present invention have been fully and effectively accomplished. The functions and structural principles of the present invention have been shown and described in the embodiments, and the embodiments of the present invention may have any deformation or modification without departing from the principles.

Claims (15)

1. A visualization naso-gastrointestinal tube, comprising:

an introducer sheath having an introducer channel;

a multifunctional mirror movably installed at the guide passage, wherein the multifunctional mirror comprises a head section, a tube body connected at the tail end of the head section and an imaging device installed at the top end of the head section, the head section is flexibly connected at the front end of the guide sheath, and the guide sheath is driven to move by controlling the movement of the head section so as to insert the guide sheath into a preset position of the gastrointestinal passage of the human body through the nasal cavity under the condition of visualization; and

and the nasogastric tube is placed in the guide channel after the multifunctional endoscope is extracted, the nasogastric tube is suitable for moving to a preset position along the guide channel under the guidance of the guide sheath, and the guide sheath is further extracted, so that the nasogastric tube can be accurately inserted to the preset position to perform corresponding operation.

2. The visualization nasogastric tube of claim 1, wherein said multifunctional scope comprises an adjustment unit, said adjustment unit comprises at least one retractor and at least one pull wire, said retractor is disposed at the end of said tube body, said pull wire is connected between said retractor and said head section, the telescopic length of said pull wire is adjusted by manipulating said retractor to control the bending of said head section, the front end of said guiding sheath is bent as said head section is bent.

3. The visualization nasogastric tube of claim 2, wherein the guiding sheath comprises a sheath wall and a first connector disposed on the inner side of the front end of the sheath wall, the guiding channel is located inside the sheath wall, the multifunctional scope comprises a third connector matching with the first connector, the third connector is disposed on the outer side of the front end of the multifunctional scope, and the multifunctional scope is detachably connected with the front end of the guiding sheath through the first connector and the third connector.

4. The visualization nasogastric-intestinal tube of claim 3, wherein the guiding sheath comprises a second connector provided at the end of the sheath wall, the multifunctional mirror comprises a fourth connector matching with the second connector, the fourth connector is provided at the middle rear section of the tube body, and the multifunctional mirror is detachably connected with the fourth connector through the second connector, so that the multifunctional mirror is detachably connected with the rear end of the guiding sheath.

5. The visualization nasogastric tube of claim 4, wherein the first connector and the third connector are provided as mutually matching threads, the introducer sheath and the multifunctional scope being connected or disconnected by rotating the sheath wall or the tube body.

6. The visualization nasogastric tube of claim 5, wherein the second connector and the fourth connector are configured as matching screw threads to connect or disconnect the introducer sheath with or from the multifunctional scope by rotating the sheath wall or the tube body, wherein the second connector and the fourth connector are configured as a buckle body and a buckle groove to detachably fasten the introducer sheath with the rear end of the multifunctional scope by manually fastening or disconnecting the buckle body with or from the buckle groove, wherein the introducer sheath further comprises an auxiliary connector movably sleeved outside the tube body to fasten or disconnect the introducer sheath with the rear end of the multifunctional scope by rotating the auxiliary connector.

7. The visualization nasogastric tube of any one of claims 2 to 6, wherein said head section comprises a long side and a short side, said pull wire and said retractor are two in number, said imaging device is mounted on said short side, said two pull wires are respectively connected to both sides of the top end of said long side, said retractor is operated to control said pull wire to pull said head section so that said head section is bent toward said short side.

8. The visualization nasogastric tube of any one of claims 1 to 6, wherein said multifunctional scope has a perfusion channel and a suction channel, which are longitudinally disposed to said tube body and said head section independently of each other for filling and draining respectively by connecting a perfusion pump and a suction device.

9. The visualization nasogastric tube of claim 8, wherein the multifunctional mirror has a perfusion channel and a suction channel, which are longitudinally disposed at the tube body and the head section independently of each other for injecting and discharging liquid by connecting a perfusion pump and a suction device, respectively, wherein the perfusion channel is disposed at the long side, and the liquid is injected through the perfusion channel to form a circular flow to be sucked by the suction channel.

10. The visualization naso-gastrointestinal tube of claim 9, wherein said naso-gastrointestinal tube comprises a gastrointestinal tube body and has a flow conduit longitudinally disposed inside said gastrointestinal tube body through which suction or perfusion of nutrient solution is performed.

11. A visualization assembly, comprising:

an introducer sheath having an introducer channel; and

and the multifunctional mirror is movably arranged on the guide channel and comprises a head section, a tube body connected to the tail end of the head section and an imaging device arranged at the top end of the head section, the head section is detachably connected to the front end of the guide sheath, and the movement of the head section is controlled to drive the guide sheath to move so as to enable the visualization component to sequentially pass through the nasal cavity, the esophagus and the stomach to reach the duodenum or the jejunum under the visualization condition.

12. The visualization assembly of claim 11, wherein the multi-functional scope includes an adjustment unit, the adjustment unit includes at least one retractor and at least one pull wire, the retractor is disposed at an end of the tube, the pull wire is connected between the retractor and the head segment, a telescopic length of the pull wire is adjusted by manipulating the retractor to control bending of the head segment, and the front end of the guide sheath bends as the head segment bends.

13. The visualization assembly of claim 11, wherein the guiding sheath comprises a sheath wall and a first connector disposed on an inner side of a front end of the sheath wall, the guiding channel is located inside the sheath wall, the multi-functional scope comprises a third connector matching with the first connector, the third connector is disposed outside the head section, and the multi-functional scope is detachably connected to the front end of the guiding sheath by the first connector and the third connector.

14. The visualization assembly of claim 13, wherein the introducer sheath includes a second connector disposed at a distal end of the sheath wall, the multi-function scope includes a fourth connector mating with the second connector, the fourth connector is disposed at a middle rear section of the tube and detachably connected to the fourth connector by the second connector such that the multi-function scope is detachably connected to a rear end of the introducer sheath, wherein the first connector and the third connector are provided as mating threads to connect or disconnect the introducer sheath and the multi-function scope by rotating the sheath wall or the tube, wherein the second connector and the fourth connector are provided as a buckle and a buckle groove to detachably connect or disconnect the introducer sheath and the rear end of the multi-function scope by manually operating the buckle and the buckle groove, wherein the introducer sheath further includes a buckle auxiliary connector movably fastened to the outer connector to assist in the external fastening of the introducer sheath and the multi-function scope.

15. The visualization assembly according to any one of claims 11 to 14, wherein the head segment is in an inclined structure and includes a long side surface and a short side surface, the imaging device is mounted on the short side surface, the third connector is disposed on the outer side of the long side surface, the pull line is connected to the top end of the long side surface, the retractor is operated to control the pull line to pull the head segment, so that the head segment bends toward the short side surface, wherein the multifunctional mirror has a perfusion channel and a suction channel, the perfusion channel and the suction channel are independently disposed on the tube body and the head segment for respectively injecting and discharging liquid by connecting a perfusion pump and a suction device, the perfusion channel is disposed on the long side surface, and liquid is injected through the perfusion channel to form a circular flow and is sucked by the suction channel.

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