Color-changeable stomach tube

Abstract

The utility model discloses a color-changeable stomach tube, which belongs to the field of medical instruments and comprises a tube body, a color-changeable tube cover and a color-changeable tube cover. The tube body comprises a collection end part, the collection end part is provided with an opening, and the opening is communicated with the tube cavity; the gastric acid detection strip is arranged in the side wall of the tube body in a penetrating mode along the central axis of the tube body, and the length of the gastric acid detection strip is not smaller than the length of the tube body in the central axis direction; the expansion structure is arranged in the tube cavity and comprises a balloon and a catheter, and the opening is blocked when the balloon expands. By means of the arrangement, whether the collecting end of the stomach tube makes contact with gastric juice or not can be judged by observing the color change of the gastric acid detection strip, and on the basis, the opportunity for communicating the stomach tube with the stomach space of a patient is controlled.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical apparatus and instruments, and particularly relates to a color-changeable stomach tube. BACKGROUND

[0002] For patients in coma or patients suffering from certain diseases and unable to eat by mouth, patients undergoing intestinal surgery and patients undergoing gastric lavage after mistakenly taking pesticides, drugs or food can be injected into the patient's body through the way of stomach tube, so as to achieve the purpose of treatment. There are many methods to judge whether the stomach tube is in the stomach after the stomach tube is inserted, which can be connecting a syringe and sucking gastric juice with the syringe, or injecting air into the tube and using a stethoscope to listen to whether air flows into the water in the patient's abdomen, and judging whether the stomach tube enters the gastric juice through the sound, but the judgment operation in the above method is complex.

[0003] Therefore, a stomach tube capable of simply and quickly judging whether the distal end has entered the gastric juice of the patient is designed, and the stomach tube is specifically a color-changeable stomach tube. UTILITY MODEL CONTENT

[0004] In order to overcome the problems in the background art, the utility model adopts the following technical scheme:

[0005] A color-changeable stomach tube comprises a tube body provided with a lumen inside, the tube body comprises a collection end portion, the collection end portion has an opening, the opening is communicated with the lumen, a gastric acid detection strip is arranged in the side wall of the tube body along the central axis of the tube body, the length of the gastric acid detection strip is not less than the length of the tube body along the central axis, an expansion structure is arranged in the lumen and comprises a balloon and a catheter, and the balloon is blocked when inflated.

[0006] Further, the tube body is provided with a through hole penetrating along the central axis of the tube body in the tube wall, the axial length of the through hole is not less than the axial length of the tube body, and the gastric acid detection strip is sleeved on the through hole.

[0007] Further, one end of the gastric acid detection strip is arranged to penetrate out of the collection end portion, the other end of the gastric acid detection strip is arranged to penetrate out of a limiting end portion, the gastric acid detection strip is in a capillary structure, and when a fluid contacts the end of the gastric acid detection strip penetrating out of the collection end portion, the fluid moves to the limiting end portion under the capillary action.

[0008] Further, the tube body further comprises a limiting end portion, the limiting end portion is connected with one end of the tube body, the limiting end portion is provided with a through hole penetrating through the limiting end portion, the catheter is sleeved on the through hole, and the central axis of the through hole coincides with the central axis of the tube body.

[0009] Further, an injection tube is connected to the side wall of the tube body, the injection tube is communicated with the lumen, the central axis of the injection tube intersects with the central axis of the tube body and has an included angle, and the included angle is not greater than 60°.

[0010] Further, the injection tube is connected with a plunger.

[0011] Further, the outer diameter of the balloon when inflated is greater than the inner diameter of the lumen, and the outer diameter of the balloon when not inflated is not greater than the outer diameter of the catheter.

[0012] Further, the collection end is provided with a limiting cavity, the inner diameter of the limiting cavity is greater than the inner diameter of the lumen, and when the fluid enters the balloon through the catheter, the balloon is inflated and limited in the limiting cavity, thereby preventing the gastric acid from pushing the balloon to move in the lumen.

[0013] Further, the length of the catheter is greater than the length of the tube.

[0014] Alternatively, unlike the arrangement of the gastric acid detection strip in the above scheme, the gastric acid detection strip can also be connected to the tube along the central axis of the tube, and the length of the gastric acid detection strip is not less than the length of the tube along the central axis.

[0015] Further, the tube is provided with a placing opening on the side wall along the central axis, and the gastric acid detection strip is connected to the tube along the contour of the placing opening, and the gastric acid contacts the gastric acid detection strip when entering the lumen through the opening; the gastric acid can also contact the gastric acid detection strip when contacting the tube.

[0016] Alternatively, unlike the arrangement of the gastric acid detection strip in the above scheme, the number of the gastric acid detection strip is one, which is connected to the outer wall or the inner wall of the tube.

[0017] Further, the number of the gastric acid detection strip is at least two, which are respectively connected to the inner wall and the outer wall of the tube.

[0018] The beneficial effects of the utility model are as follows:

[0019] 1. By setting the length of the gastric acid detection strip not less than the tube itself, one end of the gastric acid detection strip can enter the patient's body along with the tube, and the other end can extend out of the patient's body, and when the gastric acid contacts the gastric acid detection strip, the color change reaction will move along the gastric acid detection strip and be captured in the field of view of the medical staff, so that it is not necessary to determine whether the end of the gastric tube contacts the gastric acid by complex suction or water injection method, and the operation is simple and does not have the risk of causing harm to the patient.

[0020] 2. By setting the balloon connected to the catheter, the communication or isolation of the two ends of the opening can be realized by controlling the state of the balloon, so that the timing of connecting the patient's digestive tract and the lumen can be controlled, and the situation that the gastric tube is inserted into the upper digestive tract before entering the patient's gastric juice is effectively prevented, so that the smoothness of the connection can be guaranteed, and excellent practical effect is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor. Among them:

[0022] Figure 1 It is a schematic diagram of the overall structure of the balloon when it is not inflated in the embodiment 1 of the present application.

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of the balloon. Figure 1

[0024] Figure 3 It is an enlarged schematic diagram of the local structure at A in the embodiment 1 of the present application. Figure 2

[0025] Figure 4 It is a schematic diagram of the overall structure of the balloon when it is not inflated in the embodiment 2 of the present application.

[0026] Figure 5 It is a schematic diagram of the cross-sectional structure of the balloon. Figure 4

[0027] It is another schematic diagram of the cross-sectional structure of the balloon. Figure 6 Figure 4 It is an enlarged schematic diagram of the local structure at B in the embodiment 2 of the present application.

[0028] Figure 7 Figure 6 It is a schematic diagram of the overall structure of the balloon after inflation in the embodiment 2 of the present application.

[0029] Figure 8 It is a schematic diagram of the cross-sectional structure of the balloon.

[0030] Figure 9 It is another schematic diagram of the cross-sectional structure of the balloon. Figure 8

[0031] In the figure, 1, tube body; 11, lumen; 12, collection end; 121, opening; 122, limiting cavity; 13, limiting end; 131, through hole; 14, injection tube; 141, plunger; 15, placement port; 16, through hole; 2, gastric acid detection strip; 3, inflation structure; 31, balloon; 32, catheter. DETAILED DESCRIPTION

[0032] ​​​​​The following is a clear and complete description of the technical solutions in the embodiments of the present invention through specific embodiments. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Those skilled in the art can easily understand other advantages and functions of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation methods. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] Example 1

[0034] A color-changing gastric tube, such as Figures 1-3 As shown, it comprises: a tubular body 1, with a lumen 11 disposed therein; a collection end 12 having an opening 121, said opening 121 being in communication with the lumen 11; a gastric acid detection strip 2, disposed along the central axis of the tubular body 1 and extending through the sidewall of the tubular body 1, said gastric acid detection strip 2 being no less than the length of the tubular body 1 along the central axis; an expansion structure 3, disposed within the lumen 11, comprising a balloon 31 and a catheter 32, said balloon 31 sealing said opening 121 when inflated. A through hole 16 is disposed within the tubular body 1 along the central axis, said through hole 16 having an axial length no less than the axial length of the tubular body 1, and said gastric acid detection strip 2 is sleeved into said through hole 16. One end of the gastric acid testing strip 2 is provided with a collection end 12, and the other end of the gastric acid testing strip 2 is provided with a limiting end 13. The gastric acid testing strip 2 has a capillary structure. When the fluid contacts the end of the gastric acid testing strip 2 extending from the collection end 12, it moves toward the limiting end 13 under the capillary action.

[0035] A more preferred embodiment is as follows Figures 1-3 As shown, the lumen 11 also includes a stopper end 13, which is connected to one end of the lumen 11. A through hole 131 is provided through the stopper end 13, and the catheter 32 is sleeved into the through hole 131. The central axis of the through hole 131 coincides with the central axis of the lumen 11. The stopper end 13 is specifically plugged into the end of the lumen 11 that is away from the collection end 12. The gastric tube is elastic, and the stopper end 13 and the lumen 11 are plugged into an interference fit. This frictional force generated by the two reduces the risk of the stopper end 13 being dislodged from the lumen 11 and prevents the balloon 31 from being dislodged from the through hole 131.

[0036] A more preferred embodiment is as follows Figures 1-3As shown, the side wall of the lumen 11 is connected with an injection tube 14, the injection tube 14 is in communication with the lumen 11, the central axis of the injection tube 14 intersects with the central axis of the lumen 11 and has an included angle, the included angle is not greater than 60°. The injection tube 14 is connected with a plunger 141, the plunger 141 is used to block the injection tube 14, after the collection end 12 of the stomach tube reaches the stomach of the patient and contacts the gastric juice, the treatment drug or the nutrient substance can be injected into the stomach of the patient through the injection tube 14 as needed.

[0037] More preferably, the outer diameter of the balloon 31 when not inflated is not greater than the outer diameter of the catheter 32, so that the balloon 31 can pass through the through hole 131 and enter the lumen 11. The outer diameter of the balloon 31 when inflated is greater than the inner diameter of the lumen 11, so as to prevent the inflated balloon 31 from passing through the through hole 131 and leaving the lumen 11.

[0038] More preferably, the collection end 12 is provided with a limiting cavity 122, the inner diameter of the limiting cavity 122 is greater than the inner diameter of the lumen 11, when the fluid enters the balloon 31 through the catheter 32, the balloon 31 is inflated and limited in the limiting cavity 122, at this time the balloon 31 is clamped in the limiting cavity 122 under the action of air pressure or water pressure. When the stomach tube is placed, the food residues or other substances in the upper gastrointestinal tract cannot pass through the balloon 31 and enter the lumen 11, and the gastric acid cannot push the balloon 31 into the lumen 11 and enter the lumen 11, which can effectively ensure that the inside of the lumen 11 always remains unobstructed before the balloon 31 is contracted, and then the operation end and the substance injected by the injection tube 14 can be more smoothly input into the stomach of the patient without obstruction.

[0039] More preferably, the length of the catheter 32 is greater than the length of the lumen 11, one end of the catheter 32 in the lumen 11 is in communication with the balloon 31, and the other end of the catheter 32 passes through the through hole 131 of the limiting end 13 and remains outside, so that medical staff can inject fluid or extract fluid into or from the catheter 32, the fluid can be gas or liquid. The balloon 31 and the catheter 32 are made of corrosion-resistant rubber or EVA or PP material, which has elasticity and corrosion resistance and can prevent melting by gastric acid in a short time of contact with gastric acid.

[0040] In use, when the gastric acid contacts the collection end 12, it will move to the limiting end 13 in the capillary structure gastric acid detection strip 2, the user can see the gastric acid detection strip 2 through the transparent tube body 1 and judge whether the collection end 12 in the patient's body is in contact with the gastric acid based on whether the gastric acid detection strip 2 is discolored.

[0041] Example 2

[0042] A color-changing stomach tube, unlike example 1, such as Figures 4-9As shown, the variable color stomach tube comprises: a tube body 1, which is internally provided with a tube cavity 11; the tube cavity 11 comprises a collection end 12, which has an opening 121 communicating with the tube cavity 11; a gastric acid detection strip 2, which has a methyl red, bromocresol green and thymol blue indicator coating and an absorbent layer, is connected to the tube cavity 11 along a central axis of the tube cavity 11, and the length of the gastric acid detection strip 2 is not less than the length of the tube cavity 11 along the central axis; and an expansion structure 3, which is arranged in the tube cavity 11 and comprises a balloon 31 and a catheter 32, wherein the balloon 31 blocks the opening 121 when inflated.

[0043] More preferably, the variable color stomach tube comprises: Figures 4-9 As shown, the tube cavity 11 is provided with a placing opening 15 on the side wall along the central axis, the gastric acid detection strip 2 is connected to the tube cavity 11 along the contour of the placing opening 15, and the gastric acid comes into contact with the gastric acid detection strip 2 when entering the tube cavity 11 through the opening 121; the gastric acid can also come into contact with the gastric acid detection strip 2 when contacting the tube cavity 11.

[0044] In use, the catheter 32 is inflated by an external inflation device to inflate the balloon 31, the collection end 12 of the tube cavity 11 is inserted into the digestive tract of a patient in the inflated state of the balloon 31, and when the gastric acid detection strip 2 at the collection end 12 contacts the gastric acid, the gastric acid spreads along the absorbent layer to the entire gastric acid detection strip 2, and at the same time, the gastric acid detection strip 2 changes color. The medical staff can timely find that the part of the gastric acid detection strip 2 exposed outside the patient's body along the stomach tube changes color, and realize that the collection end 12 has contacted the gastric acid. At this time, the stomach tube is slightly inserted by 10-30 mm to separate the limiting end 13, and then the device for inflating the catheter 32 is removed and the expansion structure 3 is taken out.

[0045] Embodiment 3

[0046] A variable color stomach tube comprises: a tube cavity 11, which is internally provided with a tube cavity 11; the tube cavity 11 comprises a collection end 12, which has an opening 121 communicating with the tube cavity 11; a gastric acid detection strip 2, which is connected to the tube cavity 11 along a central axis of the tube cavity 11, and the length of the gastric acid detection strip 2 is not less than the length of the tube cavity 11 along the central axis; and an expansion structure 3, which is arranged in the tube cavity 11 and comprises a balloon 31 and a catheter 32, wherein the balloon 31 blocks the opening 121 when inflated.

[0047] Different from Embodiment 1, in this embodiment, the number of the gastric acid detection strip 2 is one, which is connected to the inner wall or the outer wall of the tube cavity 11. Alternatively, the number of the gastric acid detection strip 2 is at least two, which are respectively connected to the inner wall and the outer wall of the tube cavity 11. The structure of this embodiment is easier to produce, and has a lower production cost compared with Embodiment 1.

Claims

1. A color-changing gastric tube, characterized in that: include: The tube body has a lumen disposed therein; the tube body includes a collecting end portion having an opening, the opening being in communication with the lumen; A gastric acid detection strip is provided in the side wall of the tube body along the central axis of the tube body, and the length of the gastric acid detection strip is not less than the length of the tube body along the central axis; The expansion structure is arranged in the lumen and comprises a balloon and a catheter. When the balloon is expanded, the opening is blocked.

2. A color-changing gastric tube according to claim 1, characterized in that: The tube body is provided with a through hole along the central axis of the tube body in the tube wall. The axial length of the through hole is not less than the axial length of the tube body. The gastric acid detection strip is sleeved in the through hole.

3. The color-changeable gastric tube according to claim 1, characterized in that: One end of the gastric acid testing strip is provided with a collection end, and the other end of the gastric acid testing strip is provided with a limit end. The gastric acid testing strip has a capillary structure. When the fluid contacts the end of the gastric acid testing strip extending from the collection end, the fluid moves toward the limit end under the capillary action.

4. The color-changeable gastric tube according to claim 1, characterized in that: The tube body further includes a limiting end portion, which is connected to one end of the tube body. A through hole is provided through the limiting end portion, and the catheter is sleeved in the through hole.

5. The color-changeable gastric tube according to claim 1, characterized in that: An injection tube is connected to the side wall of the tube body, and the injection tube is communicated with the tube cavity. The central axis of the injection tube intersects with the central axis of the tube body and has an angle, and the angle is no greater than 60°.

6. The color-changeable gastric tube according to claim 1, characterized in that: The tube body is provided with a placement opening on the side wall along the central axis direction. The gastric acid detection strip is connected to the tube body along the contour of the placement opening. When gastric acid enters the tube cavity through the opening, it contacts the gastric acid detection strip; when gastric acid contacts the tube body, it can also contact the gastric acid detection strip.

7. The color-changeable gastric tube according to claim 1, characterized in that: The number of the gastric acid detection strip is one, which is connected to the outer wall or the inner wall of the tube body.

8. The color-changeable gastric tube according to claim 1, characterized in that: There are at least two gastric acid detection strips, which are respectively connected to the inner wall and the outer wall of the tube body.

9. The color-changeable gastric tube according to claim 1, characterized in that: The outer diameter of the balloon when inflated is larger than the inner diameter of the lumen, and the outer diameter of the balloon when not inflated is not larger than the outer diameter of the catheter.

10. The color-changeable gastric tube according to claim 1, characterized in that: The collecting end is provided with a limiting cavity, the inner diameter of which is larger than the inner diameter of the lumen. When the fluid enters the balloon through the catheter, the balloon expands and is limited in the limiting cavity.

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