CN114272141A

CN114272141A - Double-cavity visible gastrointestinal tube and double-cavity injection device with same

Info

Publication number: CN114272141A
Application number: CN202210036818.3A
Authority: CN
Inventors: 周海君
Original assignee: Peking University Shenzhen Hospital
Current assignee: Peking University Shenzhen Hospital
Priority date: 2022-01-13
Filing date: 2022-01-13
Publication date: 2022-04-05
Anticipated expiration: 2042-01-13
Also published as: CN114272141B

Abstract

The invention discloses a double-cavity visible gastrointestinal tube and a double-cavity injection device with the same. The intestinal canal is formed into an elastic spiral structure and is provided with a connecting end and a liquid outlet end, the connecting end is connected with the interface part, and the liquid outlet end is provided with a second liquid outlet for liquid to flow out; one end of the guide wire penetrates through the nose intestine channel and the intestine tube in sequence and then penetrates out of the second liquid outlet, and the other end of the guide wire is positioned outside the far end; the camera is arranged at one end of the guide wire, and the other end of the guide wire is provided with a data connector in signal connection with the camera. The double-cavity visible gastrointestinal tube provided by the invention can be used for drug administration through a nasogastric channel and a nasointestinal channel respectively, and one tube meets different requirements during treatment. In addition, the problem of blockage of the intestinal lumen is effectively prevented.

Description

Double-cavity visible gastrointestinal tube and double-cavity injection device with same

Technical Field

The invention relates to a medical gastrointestinal tube, in particular to a double-cavity visible gastrointestinal tube and a double-cavity injection device with the same.

Background

Gastrointestinal tubing is a medical tubing suitable for transgastric nutrient supply and gastrointestinal decompression. The gastrointestinal tube in the related art is mostly a flexible tube, and holes are formed in the corresponding area of the stomach and the corresponding area of the intestinal tract, so that the gastrointestinal tube with the structure is inconvenient for separate administration of the stomach and the intestinal tract. In addition, the gastrointestinal tube is a straight tube, when the gastrointestinal tube extends into a field cavity, the lower end of the gastrointestinal tube is easy to be embedded into tissues, so that the gastrointestinal tube is blocked, great troubles are caused to subsequent treatment by the blocking tube, and the gastrointestinal tube even needs to be replaced. In addition, in the intuitive process, the state in the intestinal tract is difficult to intuitively acquire, and the tube is not convenient to place.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the invention aims to provide a double-cavity visible gastrointestinal tube and a double-cavity injection device with the same.

To achieve the above objects, in one aspect, a dual lumen gastrointestinal visible tube according to an embodiment of the present invention includes:

the main tube is provided with a near end, a far end, a nasogastric channel and a nasointestinal channel, wherein the nasogastric channel and the nasointestinal channel penetrate from the far end to the near end;

the intestinal tube is of an elastic spiral structure and is provided with a connecting end and a liquid outlet end, the connecting end is connected with the interface part so as to enable the intestinal tube to be communicated with the nasal-intestinal channel, and the liquid outlet end is provided with a second liquid outlet for liquid to flow out;

one end of the guide wire penetrates through the nose intestine channel and the intestine tube in sequence and then penetrates out of the second liquid outlet, and the other end of the guide wire is positioned outside the far end;

the camera is arranged at one end of the guide wire, and the other end of the guide wire is provided with a data connector in signal connection with the camera.

According to the double-cavity visible gastrointestinal tube provided by the embodiment of the invention, on one hand, the main tube is provided with the nasogastric channel and the nasointestinal channel, so that drug can be respectively administered through the nasogastric channel and the nasointestinal channel, and one tube meets different requirements during treatment. On the other hand, connect one section intestines tube at the near-end of being responsible for, this intestines tube and nose intestines passageway to construct and have elastic heliciform structure, so, after placing the intestines tube in the intestinal, the intestines tube keeps the spiral state to support in the intestines chamber under the elastic action, and then can make the play liquid end of intestines tube unsettled in the intestines chamber, does not contact with the tissue in intestines chamber, has effectively prevented the problem of putting stifled pipe in the intestines chamber, ensures that the treatment is more smooth reliable. On the other hand, through the camera that sets up on the seal wire, can utilize the camera to gather internal image data, conveniently put the pipe, also can carry out the real time monitoring in the intestinal to the treatment process, be favorable to accurate operation and accurate control among the treatment process.

According to one embodiment of the invention, the camera head is provided with at least one LED cold light source for providing intestinal environment illumination.

According to one embodiment of the invention, the guidewire forces the intestinal tube from a helical shape to a substantially linear shape when it is threaded into the intestinal tube.

According to one embodiment of the invention, the main tube is circular in cross-section and a septum is formed within the main tube to separate the nasogastric and nasointestinal channels.

According to one embodiment of the invention, the intestine is formed as a conical helical structure tapering in a direction from the connection end to the exit end.

According to an embodiment of the present invention, the liquid outlet end is close to a center line of the main pipe, and a plane of the second liquid outlet is parallel to the center line.

According to one embodiment of the invention, the intestinal canal comprises an inner layer, an outer layer and a middle layer, wherein the inner layer and the outer layer are made of medical plastic materials, and the middle layer wraps an elastic metal wire mesh on the outer surface of the inner layer.

According to one embodiment of the invention, a balance weight sleeve is sleeved on the outer peripheral wall of the liquid outlet end to increase the weight of the liquid outlet end.

According to one embodiment of the invention, the device further comprises a Y-shaped joint, one end of the Y-shaped joint is connected to the distal end of the main pipe, the other end of the Y-shaped structure is provided with a first joint and a second joint, the first joint is communicated with the nasogastric channel, and the second joint is communicated with the nasointestinal channel.

In another aspect, a dual chamber injection device is provided according to an embodiment of the present invention, comprising:

a dual lumen visible gastrointestinal tube as described above;

an injector adapted to connect with the distal end of the main tube to inject or withdraw fluid into the nasogastric or nasointestinal channels.

According to the double-cavity injection device provided by the embodiment of the invention, the double-cavity visible gastrointestinal tube is arranged, so that the medicine can be respectively administered through a nasogastric channel and a nasointestinal channel, and one tube meets different requirements during treatment. In addition, after placing the intestinal canal in the intestinal tract, the intestinal canal keeps the spiral state to support in the intestinal cavity under the elastic action, and then can make the play liquid end of the intestinal canal unsettled in the intestinal cavity, not contact with the tissue in the intestinal cavity, effectively prevented the problem of putting stifled pipe in the intestinal cavity, ensure that the treatment is more smooth and reliable. Furthermore, the device is convenient to place the tube, can also monitor the intestinal tract in real time in the treatment process, and is favorable for accurate operation and accurate control in the treatment process.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a dual-lumen visible gastrointestinal tube according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a front view of a dual lumen visible gastrointestinal tube according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken at the position A-A in FIG. 3

FIG. 5 is another schematic diagram of a dual lumen gastrointestinal visual tube according to an embodiment of the present invention.

Reference numerals:

10. a main pipe;

d101, a near end;

d102, a far end;

h101, nasointestinal tract;

h102, nasogastric passages;

h1021, a first liquid outlet;

101. an interface section;

20. an intestinal canal;

201. a connecting end;

202. a liquid outlet end;

h202, a second liquid outlet;

30. a Y-shaped joint;

301. a first joint;

302. a second joint;

303. a first sealing cover;

304. a second sealing cover;

40. a guide wire;

41. a camera;

411. an LED cold light source;

50. and a counterweight sleeve.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the present invention and should not be construed as limiting the present invention, and all other embodiments that can be obtained by one skilled in the art based on the embodiments of the present invention without inventive efforts shall fall within the scope of protection of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "circumferential," "radial," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The dual-lumen visible gastrointestinal tube 20 and the dual-lumen injection device having the same according to the embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Referring to fig. 1 to 4, a dual-lumen visible gastrointestinal tube 20 provided according to an embodiment of the present invention includes a main tube 10, an intestinal tube 20, a guide wire 40, and a camera 41.

Specifically, the main tube 10 may be made of a medical soft plastic material, such as a polyurethane material (PU) or a thermoplastic polyurethane elastomer (TPU), and the outer diameter of the main tube 10 may be designed according to clinical adaptability, for example, the outer diameter of the main tube 10 may be 6.6 mm. The main tube 10 has a proximal end D101, a distal end D102, and a nasogastric passage H102 and a nasointestinal passage H101 penetrating from the distal end D102 to the proximal end D101, and the proximal end D101 has a first liquid outlet H1021 communicating with the nasogastric passage H102 and a connecting port 101 communicating with the nasointestinal passage H101. The proximal end D101 is the end inserted into the human body when used, and the distal end D102 is the end left outside the human body when used.

The intestinal tube 20 is formed into an elastic spiral structure, the intestinal tube 20 has a connection end 201 and a liquid outlet end 202, the connection end 201 is connected with the interface part 101 so as to communicate the intestinal tube 20 with the nasal-intestinal tract H101, and the liquid outlet end 202 has a second liquid outlet H202 for liquid to flow out.

That is, the intestine tube 20 is connected to the proximal end D101 of the main tube 10 and communicates with the nasointestinal tract H101 of the main tube 10, and the intestine tube 20 has an elastic spiral structure, and when no external force is introduced, the intestine tube 20 maintains the spiral structure, and when the external force is removed after being straightened by the external force, the intestine tube 20 can restore the spiral structure.

One end of the guide wire 40 penetrates through the nose intestine channel and the intestine tube in sequence and then penetrates out of the second liquid outlet, and the other end of the guide wire 40 is positioned outside the far end. The camera 41 is arranged at the one end of the guide wire 40, and the other end of the guide wire 40 is provided with a data connector in signal connection with the camera 41, and the data connector can be connected to a monitoring device to display video images through the monitoring device.

That is, the guide wire 40 can pass through the main tube from the nasointestinal passage and then pass through the intestinal tube from the second outlet of the outlet end of the intestinal tube. In the transnasal tube placement process, the guide wire 40 can be retracted into the liquid outlet end of the intestinal tube, and then the transnasal tube placement is started, because the guide wire 40 has relatively high hardness, the gastrointestinal tube can be conveniently penetrated into the stomach by utilizing the guiding effect of the guide wire 40, and the intestinal tube is placed in the intestinal tract. In addition, set up camera 41 in the one end that guide wire 40 stretched into to the intestinal, camera 41 can enter into to internal along with the pipe placing process, utilizes camera 41 can acquire internal image data to in the pipe is placed to be more smooth and quick. In addition, the camera 41 can also be used to acquire image data in the intestinal tract, so as to monitor the state in the intestinal tract.

When the double-cavity visible gastrointestinal tube 20 is used for supplying nutrition, the distal end D102 of the main tube 10 is connected with an injection device, the liquid injection device can be selectively connected with a nasogastric passage H102 or a nasointestinal passage H101, so that nutrition can be supplied to the stomach or the intestinal tract by the liquid injection device, for example, for patients with less serious diseases, the nutrition can be supplied to the stomach by the first liquid outlet H1021, for patients with serious diseases such as coma, the nutrition can be supplied to the intestinal tract by the intestinal tract nutrition supply and the like, and the nutrition can be supplied to the intestinal tract by the second liquid outlet H202 of the intestinal tube 20. When the double-cavity visible gastrointestinal tube 20 is used for gastrointestinal decompression, the suction device is selectively connected with the nasogastric and gastrointestinal passage H102 or the nasointestinal passage H101, and then the stomach or the intestinal tract is sucked, so that the internal gas or liquid is pumped out, and the decompression operation of the stomach or the intestinal tract is realized.

It should be noted that, clinically, when the tube is placed in the intestinal tract, the liquid outlet end 202 of the tube is easy to contact with the wall of the intestinal lumen or other tissues under the action of gravity, and even is easy to be embedded into the tissues after the intestinal tract peristalsis, which causes tube blockage, once the tube blockage occurs, it causes great inconvenience to the subsequent treatment, such as difficult dredging, needing to replace the tube, and the like, which also causes great pain to the patient.

In the present application, the inventor finds, through research, that the intestinal tube 20 is configured to have an elastic helical structure, and this helical structure, after being placed in the intestinal tract, is supported on the wall of the intestinal lumen by expanding radially outwards under the elastic action, so that the liquid outlet tube of the intestinal tube 20 can be suspended in the intestinal lumen without contacting with other tissues, and thus, the problem that the liquid outlet end 202 is easily blocked can be prevented.

According to the double-cavity visible gastrointestinal tube 20 provided by the embodiment of the invention, the main tube 10 is provided with the nasogastric channel H102 and the nasointestinal channel H101, the administration can be carried out through the nasogastric channel H102 and the nasointestinal channel H101 respectively, and one tube meets different requirements during treatment. In addition, a section of intestinal tube 20 is connected to the proximal end D101 of the main tube 10, the intestinal tube 20 and the nasointestinal tract H101 are configured to have an elastic spiral structure, so that after the intestinal tube 20 is placed in the intestinal tract, the intestinal tube 20 is supported in the intestinal cavity in a spiral state under the elastic action, and then the liquid outlet end 202 of the intestinal tube 20 can be suspended in the intestinal cavity and is not in contact with the tissues of the intestinal cavity, thereby effectively preventing the problem of tube blockage in the intestinal cavity and ensuring smooth and reliable treatment.

Referring to fig. 1, in an example of the present invention, the camera 41 is provided with at least one LED cold light source 411 for providing illumination to the environment of the intestinal tract, so that during the tube insertion process, the light provided by the LED cold light source 411 on the camera 41 can illuminate the environment in the body, thereby ensuring that the camera 41 can acquire clearer image data, facilitating visual tube insertion and visual monitoring in the intestinal tract.

In one embodiment of the invention, the guidewire 40 forces the bowel tube from a helical shape to a generally linear shape as the guidewire 40 is threaded into the bowel tube. That is, the guide wire 40 has relatively high hardness, and after the guide wire 40 is inserted into the intestinal canal, the intestinal canal can be changed into a substantially straight shape in a spiral shape and inserted over the guide wire 40, so that the straight shape is more convenient for guiding the intestinal canal. In addition, after the intestinal canal 20 is placed in the intestinal tract and the guide wire 40 is pulled out, the intestinal canal 20 can restore the spiral state under the elastic action and is supported in the intestinal cavity.

In one example of the present invention, the main tube 10 is circular in cross section, and a membrane is formed in the main tube 10 to separate the nasogastric and nasointestinal channels H102 and H101, and preferably, the membrane is integrally formed with the main tube 10, so that the main tube 10 is easily formed and the nasogastric and nasointestinal channels H102 and H101 are independent of each other.

In one embodiment of the present invention, the intestine 20 is formed as a conical helical structure tapering from the connection end 201 to the outlet end 202.

In this embodiment, the intestinal canal 20 forms a conical spiral structure gradually decreasing from the connecting end 201 to the liquid outlet end 202, that is, a structure with a large top and a small bottom, so that when the intestinal canal 20 is in the intestinal tract, the larger part above the intestinal canal 20 is supported by the intestinal tract, and the larger space below the intestinal canal 20 can be formed, and when the smaller part above the intestinal canal 20 is located in the space, the intestinal canal can be far away from the surrounding tissues, so as to ensure that the liquid outlet end 202 of the intestinal canal 20 is less likely to contact with the surrounding tissues, thereby further improving the anti-blocking effect.

More advantageously, the liquid outlet end 202 is close to the central line of the main pipe 10, and the plane of the second liquid outlet H202 is parallel to the central line, that is, the liquid outlet end 202 extends towards the central line, so that the second liquid outlet H202 is close to the central line, and thus, the second liquid outlet H202 can be as far away from the surrounding tissues as possible, the structure of the surrounding tissues can be avoided, and the better pipe blockage prevention effect can be improved.

Illustratively, the ratio of the cross-sectional areas of nasogastric channel H102 and nasointestinal channel H101 is between 1:1 and 5:4, and the main tube 10 using this ratio can meet the needs of administration in the clinic.

In one embodiment of the present invention, the intestinal tube 20 comprises an inner layer, an outer layer and a middle layer, wherein the inner layer and the outer layer are made of medical plastic materials, such as PU materials, TPU materials and the like, and the middle layer wraps an elastic metal wire mesh, such as a stainless steel wire mesh.

In this embodiment, the elastic steel wire mesh is adopted in the middle layer of the intestinal tube 20, so that the intestinal tube 20 has good elasticity, and after being placed in the intestinal tract, the intestinal tube can be supported in the intestinal tract cavity by the elasticity of the elastic steel wire mesh and keep a spiral structure, so as to ensure that the liquid outlet end 202 is reliably suspended in the intestinal tract cavity, and the structure is designed to ensure the effectiveness and reliability of the support of the intestinal tube 20 in the intestinal tract.

Referring to fig. 5, in one embodiment of the present invention, a weight sleeve 50 is sleeved on the outer peripheral wall of the liquid outlet end to increase the weight of the liquid outlet end. Preferably, the weight sleeve 50 may be made of metal, such as stainless steel, titanium alloy, etc.

The liquid outlet end can keep the liquid outlet end not to sink due to the spiral shape, and the second liquid outlet is higher in height, so that the liquid outlet of the second liquid outlet is not smooth. Through set up counter weight cover 50 at the play liquid end, utilize counter weight cover 50's action of gravity, can be so that the play liquid end sinks relatively, form the decurrent state of slope, so, second liquid outlet height is lower, and then makes the second liquid outlet discharge nutrient solution more smooth.

In one embodiment of the present invention, the present invention further comprises a Y-shaped joint 30, one end of the Y-shaped joint 30 is connected to the distal end D102 of the main tube 10, the other end of the Y-shaped structure has a first joint 301 and a second joint 302, the first joint 301 is communicated with the nasogastric channel H102, and the second joint 302 is communicated with the nasointestinal channel H101.

Thus, in use, the first connector 301 can be used to connect with an injection device or a suction device, and the second connector 302 can also be used to connect with an injection device or a suction device, so that the injection device or the suction device can be conveniently connected with the injection device or the suction device in use.

In an embodiment of the present invention, a first sealing cover 303 adapted to seal the first joint 301 is connected to the first joint 301, a second sealing cover 304 adapted to seal the second joint 302 is connected to the second joint 302, the first sealing cover 303 and the second sealing cover both adopt soft rubber materials, and cross-shaped notches are formed in the first sealing cover 303 and the second sealing cover 304 for inserting and pulling a syringe.

In this embodiment, the first joint 301 can be sealed by the first sealing cap 303, and the second joint 302 can be sealed by the second sealing cap 304, so that when nutrition supply or gastrointestinal decompression operation is not required, the first joint 301 and the second joint 302 can be sealed by the first sealing cap 303 and the second sealing cap 304, thereby preventing harmful substances such as external viruses from entering into the body to cause infection and other problems. When the injector is used, the injector can be directly inserted into the cross-shaped notch, so that the injector is convenient to plug and pull and is convenient to use.

According to the embodiment of the invention, the double-cavity injection device comprises a syringe and the double-cavity visible gastrointestinal tube 20 as described in the embodiment. The syringe is adapted to be connected to the distal end D102 of the main tube 10 for injecting or withdrawing fluid into the nasogastric channel H102 or the nasointestinal channel H101.

According to the double-cavity injection device provided by the embodiment of the invention, the double-cavity visible gastrointestinal tube 20 is arranged, so that the medicine can be respectively administered through the nasogastric passage H102 and the nasointestinal passage H101, and one tube meets different requirements during treatment. In addition, after placing the intestinal canal 20 in the intestinal tract, the intestinal canal 20 keeps a spiral state and is supported in the intestinal cavity under the action of elasticity, so that the liquid outlet end 202 of the intestinal canal 20 is suspended in the intestinal cavity and does not contact with the tissues of the intestinal cavity, the problem of tube blockage in the intestinal cavity is effectively prevented, and the smooth and reliable treatment is ensured.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A dual lumen visible gastrointestinal tube, comprising:

2. The dual-lumen visible gastrointestinal tube of claim 1, wherein the camera has at least one LED cold light source thereon to provide intestinal ambient illumination.

3. The dual lumen gastrointestinal visible tube of claim 1, wherein the guidewire forces the intestinal tube from a helical shape to a substantially linear shape when the guidewire is threaded into the intestinal tube.

4. The dual lumen gastrointestinal visible tube of claim 1 wherein the main tube is circular in cross-section and a septum is formed within the main tube to separate the nasogastric and nasointestinal passageways.

5. The dual lumen visible gastrointestinal tube of claim 1, wherein the intestinal tube is formed as a conical helical structure that tapers in a direction from the connection end to the outlet end.

6. The dual-cavity visible gastrointestinal tube of claim 1, wherein the liquid outlet end is close to a centerline of the main tube, and a plane in which the second liquid outlet is located is parallel to the centerline.

7. The dual-cavity visible gastrointestinal tube of claim 1, wherein the intestinal tube comprises an inner layer, an outer layer and a middle layer, the inner layer and the outer layer are made of medical plastic materials, and the middle layer wraps the elastic wire mesh on the outer surface of the inner layer.

8. The dual-cavity visible gastrointestinal tube according to claim 1, wherein a weight sleeve is sleeved on the outer peripheral wall of the liquid outlet end to increase the weight of the liquid outlet end.

9. The dual lumen gastrointestinal visualization tube of claim 1 further comprising a Y-connector, one end of the Y-connector connected to the distal end of the main tube, the other end of the Y-connector having a first connector in communication with the nasogastric passageway and a second connector in communication with the nasointestinal passageway.

10. A dual chamber injection device comprising:

the dual lumen visible gastrointestinal tube of any one of claims 1 to 9;