CN116585201A

CN116585201A - Novel feeding tube fixing device and feeding tube

Info

Publication number: CN116585201A
Application number: CN202310818397.4A
Authority: CN
Inventors: 付易红; 肖三; 周春燕
Original assignee: Second People's Hospital Of Guiyang
Current assignee: Second People's Hospital Of Guiyang
Priority date: 2023-07-05
Filing date: 2023-07-05
Publication date: 2023-08-15

Abstract

The application is applicable to the technical field of medical appliances, and provides a novel feeding tube fixing device and a feeding tube, wherein the novel feeding tube fixing device comprises a nipple-shaped fixing piece; the nipple-shaped fixing piece comprises a milk shield part, a connecting part and a nipple head part; the connecting part is communicated with the nipple head; a plurality of first piston cavities are uniformly formed in the connecting part; ventilation channels are formed between the first piston cavities and the mounting cavities; the end part of the first piston cavity is provided with an elastic diaphragm, and a piston plate is arranged in the first piston cavity in a sliding manner; an elastic air bag is adhered to the inside of the mounting cavity; the elastic air bag is communicated with each air vent channel; the surface of the milk shield part is symmetrically and slidably provided with an extrusion part for extruding the elastic air bag. The nipple head is placed in the mouth of a patient, the feeding tube slides downwards along the connecting tube, the feeding depth of the feeding tube is adjusted, the elastic air bag is extruded through the extrusion piece, the extrusion ball head is driven to extend outwards into the corresponding positioning hole, the feeding tube is fixed, and the using comfort level of the patient is improved.

Description

Novel feeding tube fixing device and feeding tube

Technical Field

The application relates to the technical field of medical equipment, in particular to a novel fixing device of a feeding tube and the feeding tube.

Background

The oral feeding tube is characterized in that feeding is put into the esophagus through the oral cavity, firstly, food is gelatinized by using a grinding machine, a large injector is connected with a large feeding port below a feeding tube joint, after the connection is firm, a push rod piston is manually pressurized to pump water and food into the stomach of a patient, so that the patient incapable of swallowing autonomously is helped to provide water and food, and in-vivo metabolism, weight and nutrition are maintained.

However, the existing feeding tube is not provided with an external fixing device, so that a patient is required to bite the feeding tube by teeth for external fixing, the feeding flow rate is influenced by excessive force applied by the patient, the feeding tube is difficult to externally fix by the patient when the force applied by the patient is too small, the comfort level of the patient is reduced, and the operation difficulty is increased; meanwhile, the operation object is not only medical staff, but also patients or families without medical background, and whether the oral feeding tube is in the trachea or the esophagus cannot be accurately and timely judged; in the feeding process, the feeding tube is required to be pinched by fingers to control the feeding flow rate, and the fingers are required to keep a pinching state for a long time to maintain the specified feeding flow rate, so that the feeding operation difficulty is further increased.

Disclosure of Invention

Aiming at the defects in the prior art, the application aims to provide a feeding tube which is arranged in the mouth of a patient and slides downwards along a connecting tube to realize the adjustment of the feeding depth of the feeding tube; when the feeding catheter is placed at the specified position, the screw rod is rotated to separate the feeding catheter from the screw hole, the pressing plate is driven to extrude the elastic air bag under the elastic acting force of the extrusion spring, gas in the elastic air bag enters the first piston cavity through each ventilation pore canal, the extrusion ball head is driven to extend outwards into the corresponding positioning hole, the fixing of the feeding tube is realized, the comfort level of the patient is improved, and the fixing device and the feeding tube of the novel feeding tube for feeding are reduced in operation difficulty.

In order to achieve the above purpose, the present application provides the following technical solutions:

a novel feeding tube fixing device, which comprises a nipple-shaped fixing piece; the nipple-shaped fixing piece comprises a milk shield part, a connecting part arranged on the surface of the milk shield part and a nipple head part arranged on the bottom surface of the milk shield part; the connecting part is communicated with the nipple head; the outer peripheral side surface of the connecting part is symmetrically provided with an installation cavity; a plurality of first piston cavities are uniformly formed in the connecting part from top to bottom; a ventilation duct is arranged between each first piston cavity and the mounting cavity; the end part of the first piston cavity is provided with an elastic diaphragm, and a piston plate is arranged in the first piston cavity in a sliding manner; the end part of the piston plate is provided with a positioning ball head which is attached to the elastic diaphragm; baffle plates are symmetrically arranged on the inner wall of the first piston cavity at the position close to the elastic diaphragm; an elastic air bag is adhered to the inside of the mounting cavity; the elastic air bag is communicated with each air vent channel; the surface of the milk shield part is symmetrically and slidably provided with an extrusion part for extruding the elastic air bag.

The application is further provided with: guide rails are symmetrically arranged on the inner wall of the connecting part; the surface of the milk shield part is symmetrically provided with sliding grooves; the extrusion piece comprises a sliding block which is arranged between the inner walls of the sliding grooves in a sliding way; an extrusion spring is arranged between the sliding block and the inner wall of the sliding groove; the surface of the sliding block is provided with a pressing plate.

The application is further provided with: slide rails are symmetrically arranged on two opposite sides of the sliding block; limiting grooves which are in sliding fit with the sliding rails are symmetrically formed in two sides of the inner wall of the sliding groove; the surface of the sliding block is provided with a jack; screw holes are formed in the inner bottom surface of the sliding groove; the jack is inserted with a screw rod which is in running fit with the screw hole threads.

The application is further provided with: a second piston cavity is formed in the milk shield part; a piston block is slidably arranged in the second piston cavity; the surface of the piston block is provided with a connecting rod; a third piston cavity communicated with the second piston cavity is symmetrically formed in the milk shield part; an arc-shaped air passage is formed in the milk shield part; the two third piston cavities are communicated through an arc-shaped air passage; a piston rod is slidably arranged in the third piston cavity; the end part of the piston rod is provided with an extrusion ball head; and a reset spring is arranged between the third piston cavity and the other end of the piston rod.

The application is further provided with: a threaded hole is formed in the milk shield part at a position close to the second piston cavity; a threaded rod is rotatably arranged in the threaded hole in a threaded manner; the end part of the threaded rod is provided with a rotating block; the connecting rod is located below the rotating block.

A feeding tube based on a novel feeding tube fixing device comprises a conveying tube, a positioning tube and a feeding catheter; the conveying pipe is fixedly connected with the feeding catheter through a positioning pipe; guide grooves which are in sliding fit with the guide rails are symmetrically formed in the peripheral side surfaces of the positioning pipes; the peripheral side surface of the positioning tube is provided with positioning holes matched with the positioning ball heads in a linear array distribution from top to bottom.

The application is further provided with: the end part of the conveying pipe is provided with a conical funnel; a conical sealing cover matched with the conical funnel is arranged in the conical funnel; a connecting rope is arranged between the conical funnel and the conical sealing cover; a plurality of feeding holes are uniformly formed in the end part of the feeding catheter; the peripheral side surface of the feeding catheter is provided with a gray silver wire X-ray developing coating.

The application is further provided with: the peripheral side surface of the conveying pipe is provided with an air duct upwards at a certain inclination angle; the inside of the air duct is provided with a polyether sulfone membrane and a filter screen from top to bottom in sequence; the end part of the air duct is in threaded connection with a transparent pipe; the transparent tube is internally stuck and provided with a plurality of wet litmus test papers.

The application has the advantages that:

1. according to the application, the nipple head is placed in the mouth of a patient, and the feeding tube is slid downwards along the connecting part, so that the feeding depth of the feeding tube is adjusted; when the feeding duct is placed at the specified position, the screw rod is rotated to separate the feeding duct from the screw hole, the pressing plate is driven to extrude the elastic air bag under the elastic acting force of the extrusion spring, gas in the elastic air bag enters the first piston cavity through each ventilation pore canal, the extrusion ball head is driven to extend outwards into the corresponding positioning hole, the fixing of the feeding pipe is realized, the feeding of the subsequent feeding pipe is facilitated, the patient can fix the feeding pipe only by containing the nipple head, the using comfort of the patient is improved, and the feeding operation difficulty is reduced.

2. According to the application, when the feeding catheter is inserted into the trachea by misoperation, carbon dioxide exhaled from the trachea enters the transparent tube on the trachea along the feeding tube, and reacts with the wet litmus test paper to turn red, so that the feeding catheter is warned to be wrongly inserted into the trachea, and the use safety performance of the device is improved.

3. When the feeding flow rate needs to be controlled, the rotating block is rotated to enable the threaded rod to rotate and descend along the threaded hole, so that the connecting rod is driven to descend, the piston block descends along the second piston cavity, gas in the piston block is pressed into the third piston cavity, the extrusion piston rod slides out of the third piston cavity, the extrusion ball head extrudes the feeding guide pipe to deform, the conveying inner diameter of the feeding guide pipe is reduced, further the feeding flow rate is controlled, the operation is simple, and the feeding operation difficulty is further reduced.

Drawings

Fig. 1 is a schematic structural view of a novel feeding tube fixing device and a feeding tube assembly body according to the present application.

Fig. 2 is a schematic view of another angle between the fixing device of the novel feeding tube and the feeding tube assembly.

Fig. 3 is an enlarged view of area a of fig. 2 in accordance with the present application.

Fig. 4 is a schematic structural view of the novel feeding tube fixing device of the present application.

Fig. 5 is an enlarged view of region B of fig. 4 in accordance with the present application.

Fig. 6 is a schematic structural view of the nipple mount of the present application.

Fig. 7 is an enlarged view of region C of fig. 6 in accordance with the present application.

Fig. 8 is a schematic view of another angle of the nipple mount of the present application.

Fig. 9 is a schematic view of the structure of the extrusion of the present application.

FIG. 10 is a schematic view of the structure of the feeding tube of the present application.

FIG. 11 is a schematic view of another angle of the feeding tube of the present application.

Fig. 12 is an enlarged view of region D of fig. 11 in accordance with the present application.

In the figure: 1. a nipple-shaped fixing member; 2. a milk shield part; 3. a connection part; 4. a nipple head; 5. a mounting cavity; 6. a first piston chamber; 7. a ventilation duct; 8. an elastic diaphragm; 9. a piston plate; 10. positioning a ball head; 11. a baffle; 12. an elastic air bag; 13. an extrusion; 14. a guide rail; 15. a chute; 16. a slide block; 17. extruding a spring; 18. a pressing plate; 19. a slide rail; 20. a limit groove; 21. a jack; 22. a screw hole; 23. a second piston chamber; 24. a piston block; 25. a connecting rod; 26. a third piston chamber; 27. an arc-shaped air passage; 28. a piston rod; 29. extruding the ball head; 30. a return spring; 31. a threaded hole; 32. a threaded rod; 33. a rotating block; 34. a material conveying pipe; 35. a positioning tube; 36. a feeding conduit; 37. a guide groove; 38. positioning holes; 39. a conical funnel; 40. a conical sealing cover; 41. a connecting rope; 42. a feeding well; 43. grey silver line X-ray developing coating; 44. an air duct; 45. a polyethersulfone membrane; 46. a transparent tube; 47. litmus test paper.

Detailed Description

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

It is noted that all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless otherwise indicated.

In the present application, unless otherwise indicated, the terms "upper" and "lower" are used generally with respect to the directions shown in the drawings, or with respect to the vertical, vertical or gravitational directions; also, for ease of understanding and description, "left, right" is generally directed to the left, right as shown in the drawings; "inner and outer" refer to inner and outer relative to the outline of the components themselves, but the above-described orientation terms are not intended to limit the present application.

Example 1

Referring to fig. 1-12, the present application provides the following technical solutions:

the utility model provides a novel fixing device of a feeding pipe, which comprises a nipple-shaped fixing piece 1; the nipple-shaped fixing piece 1 comprises a milk shield part 2, a connecting part 3 arranged on the surface of the milk shield part 2 and a nipple head part 4 arranged on the bottom surface of the milk shield part 2; the connecting part 3 is communicated with the nipple head 4; the outer peripheral side surface of the connecting part 3 is symmetrically provided with a mounting cavity 5; a plurality of first piston cavities 6 are uniformly formed in the connecting part 3 from top to bottom; a ventilation duct 7 is arranged between each first piston cavity 6 and the mounting cavity 5; the end part of the first piston cavity 6 is provided with an elastic diaphragm 8, and the inside of the first piston cavity is provided with a piston plate 9 in a sliding manner; the end part of the piston plate 9 is provided with a positioning ball head 10 which is attached to the elastic diaphragm 8; baffle plates 11 are symmetrically arranged on the inner wall of the first piston cavity 6 near the elastic diaphragm 8; an elastic air bag 12 is adhered to the inside of the installation cavity 5; the elastic air bag 12 is communicated with each ventilation duct 7; the surface of the milk shield part 2 is symmetrically and slidably provided with an extrusion part 13 for extruding the elastic air bag 12.

A feeding tube based on a novel feeding tube fixing device, comprising a conveying tube 34, a positioning tube 35 and a feeding guide tube 36; the feed delivery pipe 34 is fixedly connected with the feeding conduit 36 through a positioning pipe 35; guide grooves 37 which are in sliding fit with the guide rails 14 are symmetrically formed in the peripheral side surfaces of the positioning pipes 35; the side surface of the circumference of the positioning tube 35 is provided with positioning holes 38 which are matched with the positioning ball head 10 in a linear array from top to bottom.

The first working principle of this embodiment: the nipple head 4 is placed in the mouth of a patient, and the feeding tube is slid downwards along the connecting part 3, so that the feeding depth of the feeding tube is adjusted; the extrusion of the elastic air bag 12 is realized through the extrusion piece 13, gas in the elastic air bag 12 enters the first piston cavity 6 through each ventilation pore canal 7, the extrusion ball head 29 is driven to extend outwards into the corresponding positioning hole 38, the fixing of the feeding tube is realized, the patient only needs to contain the nipple head 4, the fixing of the feeding tube is realized, the comfort level of the patient is improved, and the feeding operation difficulty is reduced.

Example two

Referring to fig. 3-5, the second embodiment is modified from the first embodiment in that guide rails 14 are symmetrically disposed on the inner wall of the connecting portion 3; the surface of the milk shield part 2 is symmetrically provided with sliding grooves 15; the extrusion 13 comprises a slider 16 slidably arranged between the inner walls of the chute 15; an extrusion spring 17 is arranged between the sliding block 16 and the inner wall of the sliding groove 15; the surface of the sliding block 16 is provided with a pressing plate 18; slide rails 19 are symmetrically arranged on two opposite sides of the slide block 16; limit grooves 20 which are in sliding fit with the slide rails 19 are symmetrically formed on two sides of the inner wall of the slide groove 15; the surface of the sliding block 16 is provided with a jack 21; screw holes 22 are formed in the inner bottom surface of the chute 15; the jack 21 is inserted with a screw rod which is in threaded rotation fit with the screw hole 22.

The second working principle of this embodiment: when the feeding conduit 36 is placed at a designated position, the screw is rotated to separate the feeding conduit from the screw hole 22, the pressing plate 18 is driven to squeeze the elastic air bag 12 under the elastic acting force of the squeezing spring 17, the air in the elastic air bag 12 enters the first piston cavity 6 through each ventilation hole 7, the squeezing ball 29 is driven to extend outwards into the corresponding positioning hole 38, the fixing of the feeding tube is realized, and the feeding of the subsequent feeding tube is facilitated.

Example III

Referring to fig. 3-6, the third embodiment is modified based on the second embodiment, specifically, a second piston cavity 23 is formed in the milk shield 2; a piston block 24 is slidably arranged in the second piston cavity 23; the surface of the piston block 24 is provided with a connecting rod 25; a third piston cavity 26 communicated with the second piston cavity 23 is symmetrically arranged in the milk shield part 2; an arc-shaped air passage 27 is formed in the milk shield part 2; the two third piston cavities 26 are communicated through an arc-shaped air passage 27; a piston rod 28 is slidably arranged in the third piston cavity 26; the end of the piston rod 28 is provided with a squeeze bulb 29; a return spring 30 is arranged between the third piston chamber 26 and the other end of the piston rod 28; a threaded hole 31 is formed in the milk shield part 2 at a position close to the second piston cavity 23; the threaded hole 31 is internally provided with a threaded rod 32 in a threaded rotation manner; the end of the threaded rod 32 is provided with a rotating block 33; the connecting rod 25 is located below the rotating block 33.

The third working principle of the embodiment: when the feeding flow rate needs to be controlled, the rotating block 33 is rotated to enable the threaded rod 32 to rotate and descend along the threaded hole 31, so that the connecting rod 25 is driven to descend, the piston block 24 descends along the second piston cavity 23, gas in the piston block is pressed into the third piston cavity 26, the extruding piston rod 28 slides out of the third piston cavity 26, the extruding ball head 29 extrudes the feeding guide pipe 36 to deform, the conveying inner diameter of the feeding guide pipe 36 is reduced, the feeding flow rate is controlled, the operation is simple, and the feeding operation difficulty is further reduced.

Example IV

Referring to fig. 10 and 11, the fourth embodiment is modified from the third embodiment in that a conical funnel 39 is provided at the end of the delivery pipe 34; the conical funnel 39 is provided with a conical sealing cover 40 matched with the conical funnel; a connecting rope 41 is arranged between the conical funnel 39 and the conical sealing cover 40; a plurality of feeding holes 42 are uniformly formed at the end part of the feeding conduit 36; the feeding catheter 36 is provided with a grey silver wire X-ray developing coating 43 on the peripheral side.

The fourth working principle of the embodiment is as follows: the conical sealing cover 40 is removed from the conical funnel 39, the conical funnel 39 is connected by a large injector, after the connection is firm, the push rod piston is manually pressurized to pump water and food into the stomach of a patient, so that a fluid object enters the esophagus of the patient through the feeding hole 42 on the feeding catheter 36, and the patient incapable of swallowing autonomously is helped to provide water and food, and the metabolism, the weight and the nutrition in the body are maintained; by setting the gray silver wire X-ray developing coating 43, the accurate position of the tube can be obtained by X-ray film shooting in a hospital when whether the tube is successfully placed is uncertain.

Example five

Referring to fig. 11 and 12, the fifth embodiment is modified on the basis of the fourth embodiment, specifically, an air duct 44 is disposed on the peripheral side surface of the feeding pipe 34 at an upward angle; the inside of the air duct 44 is provided with a polyether sulfone membrane 45 and a filter screen from top to bottom in sequence; the end of the air duct 44 is screwed with a transparent tube 46; a plurality of wet litmus paper 47 is adhered inside the transparent tube 46.

The fifth working principle of the embodiment: when the feeding catheter 36 is inserted into the trachea by misoperation, the carbon dioxide exhaled by the trachea enters the transparent tube 46 on the air duct 44 along the feeding tube, and reacts with the wet litmus test paper to turn red, so that the feeding catheter 36 is warned to be wrongly inserted into the trachea, and the use safety performance of the device is improved; the polyethersulfone membrane 45 only allows gas to pass, but not liquid; through the setting of filter screen, place large granule material and damage polyethersulfone membrane 45, improve polyethersulfone membrane 45's life.

It will be apparent that the embodiments described above are merely some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

The above description is only a preferred embodiment of the present application, and the protection scope of the present application is not limited to the above examples, and all technical solutions belonging to the concept of the present application belong to the protection scope of the present application. It should be noted that modifications and adaptations to the present application may occur to one skilled in the art without departing from the principles of the present application and are intended to be within the scope of the present application.

Claims

1. A novel feeding tube fixing device comprises a nipple-shaped fixing piece (1); the method is characterized in that:

the nipple-shaped fixing piece (1) comprises a milk shield part (2), a connecting part (3) arranged on the surface of the milk shield part (2) and a nipple head part (4) arranged on the bottom surface of the milk shield part (2); the connecting part (3) is communicated with the nipple head part (4);

the outer peripheral side surface of the connecting part (3) is symmetrically provided with a mounting cavity (5); a plurality of first piston cavities (6) are uniformly formed in the connecting part (3) from top to bottom; a ventilation duct (7) is arranged between each first piston cavity (6) and the mounting cavity (5);

an elastic diaphragm (8) is arranged at the end part of the first piston cavity (6), and a piston plate (9) is slidably arranged in the first piston cavity; a positioning ball head (10) attached to the elastic diaphragm (8) is arranged at the end part of the piston plate (9); baffle plates (11) are symmetrically arranged on the inner wall of the first piston cavity (6) close to the elastic diaphragm (8);

an elastic air bag (12) is adhered to the inside of the mounting cavity (5); the elastic air bag (12) is communicated with each ventilation duct (7); an extrusion piece (13) used for extruding the elastic air bag (12) is symmetrically arranged on the surface of the milk shield part (2) in a sliding mode.

2. The novel feeding tube fixing device according to claim 1, wherein: guide rails (14) are symmetrically arranged on the inner wall of the connecting part (3); the surface of the milk shield part (2) is symmetrically provided with sliding grooves (15); the extrusion piece (13) comprises a sliding block (16) which is arranged between the inner walls of the sliding groove (15) in a sliding way; an extrusion spring (17) is arranged between the sliding block (16) and the inner wall of the sliding groove (15); the surface of the sliding block (16) is provided with a pressing plate (18).

3. A novel feeding tube fixing device according to claim 2, wherein: slide rails (19) are symmetrically arranged on two opposite sides of the slide block (16); limiting grooves (20) which are in sliding fit with the sliding rails (19) are symmetrically formed in two sides of the inner wall of the sliding groove (15); the surface of the sliding block (16) is provided with a jack (21); screw holes (22) are formed in the inner bottom surface of the sliding groove (15); the jack (21) is inserted with a screw rod which is in threaded rotation fit with the screw hole (22).

4. A novel feeding tube fixing device according to claim 3, wherein: a second piston cavity (23) is formed in the milk shield part (2); a piston block (24) is slidably arranged in the second piston cavity (23); the surface of the piston block (24) is provided with a connecting rod (25); a third piston cavity (26) communicated with the second piston cavity (23) is symmetrically arranged in the milk shield part (2); an arc-shaped air passage (27) is formed in the milk shield part (2); the two third piston cavities (26) are communicated through an arc-shaped air passage (27); a piston rod (28) is slidably arranged in the third piston cavity (26); an extrusion ball head (29) is arranged at the end part of the piston rod (28); a return spring (30) is arranged between the third piston cavity (26) and the other end of the piston rod (28).

5. The novel feeding tube fixing device according to claim 4, wherein: a threaded hole (31) is formed in the milk shield part (2) at a position close to the second piston cavity (23); a threaded rod (32) is rotatably arranged in the threaded hole (31) in a threaded manner; a rotating block (33) is arranged at the end part of the threaded rod (32); the connecting rod (25) is positioned below the rotating block (33).

6. Feeding tube based on a novel feeding tube fixing device according to claims 1-5, characterized in that:

comprises a conveying pipe (34), a positioning pipe (35) and a feeding conduit (36); the conveying pipe (34) is fixedly connected with the feeding conduit (36) through a positioning pipe (35); guide grooves (37) which are in sliding fit with the guide rails (14) are symmetrically formed in the peripheral side surfaces of the positioning pipes (35);

the peripheral side surface of the positioning tube (35) is provided with positioning holes (38) which are matched with the positioning ball head (10) in a linear array from top to bottom.

7. The feeding tube based on the novel feeding tube fixing device according to claim 6, wherein: the end part of the conveying pipe (34) is provided with a conical funnel (39); a conical sealing cover (40) matched with the conical funnel (39) is arranged in the conical funnel; a connecting rope (41) is arranged between the conical funnel (39) and the conical sealing cover (40); a plurality of feeding holes (42) are uniformly formed at the end part of the feeding conduit (36); the peripheral side of the feeding catheter (36) is provided with a gray silver wire X-ray developing coating (43).

8. The feeding tube based on the novel feeding tube fixing device according to claim 6, wherein: an air duct (44) is arranged on the peripheral side surface of the conveying pipe (34) upwards at a certain inclination angle; a polyether sulfone membrane (45) and a filter screen are sequentially arranged in the air duct (44) from top to bottom; the end part of the air duct (44) is in threaded connection with a transparent pipe (46); a plurality of wet litmus test papers (47) are adhered to the inside of the transparent tube (46).