Nasal feeding nutrition device

Abstract

The invention relates to the technical field of nasal feeding devices, in particular to a nasal feeding nutrition device which comprises a nasal feeding tube body with the inner wall diameters of the two ends being the first diameter, the nasal feeding tube body is in a transparent and bendable tube shape, one end of the nasal feeding tube body is provided with a connecting plug capable of being connected with a perfusion apparatus, and the other end of the nasal feeding tube body is provided with an outflow opening. The nasal feeding tube comprises a nasal feeding tube body, a tube body part with the inner wall diameter being a second diameter is arranged in the center of the nasal feeding tube body, the second diameter is smaller than the first diameter, an indicating piece is arranged at the position, close to the tube body part, of the nasal feeding tube body, and the indicating piece is an expandable indicating piece used for visually monitoring the flow speed in the nasal feeding tube body. The flow velocity in the nasal feeding process can be visually monitored, meanwhile, the nasal feeding tube body is provided with the narrow tube body part, and the foreign body sensation of a patient can be relieved.

Description

Technical Field

[0001] The invention relates to the technical field of nasogastric feeding devices, in particular to a nasogastric feeding nutrition device. Background Art

[0002] In clinical work, nasogastric tubes are used to ensure that critically ill pregnant women, comatose patients or patients with limited swallowing function obtain energy and nutrition, and to avoid aspiration of food from the mouth, which may lead to lung infection and suffocation. When in use, the tube is inserted from the patient's nasal cavity, through the pharynx and esophagus to the stomach. External fluid food is pushed into the patient's stomach through the infusion device and the connector at the end of the nasogastric tube outside the patient.

[0003] During nasogastric feeding of patients, it is necessary to avoid injecting fluid too quickly. Injecting too quickly may cause intestinal discomfort, nausea and vomiting in patients at the very least, and may even induce reflux and lead to aspiration, causing aspiration pneumonia, fever and other symptoms. Therefore, it is very necessary to monitor the flow rate of the nasogastric feeding tube. Although some existing nasogastric feeding tubes also have flow rate monitoring functions, most of them are complex instrument monitoring, which is expensive, and the service life of nasogastric feeding tubes is short. The rubber material is generally retained for seven days, and the silicone material is generally retained for thirty to forty-five days. Most patients using nasogastric feeding are elderly people with limited economic capabilities, and generally the elderly have poor ability to identify instruments.

[0004] Since existing nasogastric feeding tubes need to pass through the nasal cavity and pharynx, the muscle tissues in these two parts are relatively sensitive, which can cause patients to have a foreign body sensation and are particularly prone to vomiting.

[0005] Based on the above situation, it is necessary to design a nasogastric feeding nutrition device to solve the above problems. Summary of the invention

[0006] The present invention provides a nasogastric feeding nutrition device, which can visually monitor the flow rate of the nasogastric feeding process, and at the same time, the nasogastric feeding tube body has a narrower tube body portion, which can reduce the patient's foreign body sensation.

[0007] The technical problem solved by the present invention is achieved by adopting the following technical solutions:

[0008] A nasogastric feeding nutrition device comprises a nasogastric feeding tube body with inner wall diameters of a first diameter at both ends, the nasogastric feeding tube body being a transparent and bendable tube, one end of the nasogastric feeding tube body being provided with a plug connector connectable to a syringe, the other end of the nasogastric feeding tube body being provided with an outflow port, a tube body portion with an inner wall diameter of a second diameter being provided at the central position of the nasogastric feeding tube body, the second diameter being smaller than the first diameter, and an indicator portion being provided near the tube body portion of the nasogastric feeding tube body.

[0009] Preferably, the indicator is an inflatable indicator for visually monitoring the flow rate inside the nasogastric feeding tube.

[0010] Preferably, the expandable indicator is a cylindrical balloon located in the passage of the nasogastric tube, and when the internal pressure of the cylindrical balloon is high, the cylindrical balloon expands.

[0011] Preferably, the expandable indicator is a balloon installed on the side wall of the nasofeeding tube body, the interior of the balloon is connected to the interior of the nasofeeding tube body, and when the internal pressure of the nasofeeding tube body is high, the fluid inside the nasofeeding tube body enters the balloon, causing the balloon to expand.

[0012] Preferably, the expandable indicator is a spiral convolution body installed on the side wall of the tube body, the interior of the spiral convolution body is connected to the interior of the nasogastric tube body, and when the pressure inside the nasogastric tube body is high, the fluid inside the nasogastric tube body enters the interior of the spiral convolution body, causing the spiral convolution body to deform toward a straight line state.

[0013] Preferably, a side hole is provided on the side wall of one end of the nasogastric feeding tube body close to the outflow port.

[0014] Preferably, the tube body portion is connected to the nasogastric feeding tube body portion equipped with a plug connector in a detachable manner.

[0015] Preferably, a branch tube is integrally formed on the side wall of the nasogastric feeding tube body, and the balloon is detachably connected to the branch tube via a connecting tube.

[0016] Preferably, the inner wall of the connection between the nasofeeding tube body and the tube body has a stepped portion, and the outer wall of the connection between the nasofeeding tube body and the tube body has a smooth transition portion.

[0017] The beneficial effect of the present invention is that a tube body is provided on the nasogastric feeding tube body, and the outer wall diameter of the tube body is smaller than the outer wall diameter of the nasogastric feeding tube body, while the patient's pharynx and nasal cavity contact the tube body, and the patient's foreign body sensation can be reduced due to the smaller outer wall diameter of the tube body.

[0018] By providing an expandable indicator and making the inner wall diameter of the tube body smaller than that of the nasogastric tube, the fluid flowing from the inside of the nasogastric tube into the tube body can be intercepted, resulting in an increase in pressure near the tube body of the nasogastric tube. When the injection speed of the external syringe is faster, the pressure near the tube body of the nasogastric tube increases more obviously, causing the expandable indicator to expand, thereby facilitating observation by the caregiver.

[0019] When the fluid flows from the tube body into the inside of the nasogastric feeding tube, the sudden increase in diameter has a decelerating effect, thereby reducing the impact of the fluid on the patient's stomach. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention in use:

[0022] Figure 2 It is a structural schematic diagram of the first embodiment of the present invention;

[0023] Figure 3 is a cross-sectional schematic diagram of a first embodiment of the present invention;

[0024] Figure 4 is a schematic structural diagram of a second embodiment of the present invention;

[0025] Figure 5 is a schematic structural diagram of a third embodiment of the present invention;

[0026] Figure 6 is a cross-sectional schematic diagram of a second embodiment of the present invention;

[0027] Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure at A in the middle;

[0028] Figure 8 It is a schematic diagram of the first connection mode between the tube body of the present invention and the nasogastric feeding tube body;

[0029] Fig. 9 It is a schematic diagram of the second connection mode between the tube body of the present invention and the nasogastric feeding tube body;

[0030] Fig.10 A schematic diagram of a third connection mode between the tube body of the present invention and the nasogastric feeding tube body;

[0031] Fig.11 It is a schematic diagram of the structure of the tube body and the nasogastric feeding tube body of the present invention being disassembled;

[0032] Fig.12 It is a schematic diagram of the principle structure of the present invention.

[0033] In the figure, 1, nasogastric feeding tube body; 2, tube body; 3, cylindrical sac; 4, plug connector; 5, infusion device; 6, balloon; 7, vortex convolution body; 8, side hole; 9, first connector; 10, second connector; 11, branch tube; 12, connecting tube; 13, smooth transition part; 14, stepped part; 15, expansion bag; 16, outflow port; 17, first flared part; 18, throat part; 19, second flared part. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific diagrams.

[0035] refer to Figure 1 A nasogastric feeding nutrition device comprises a nasogastric feeding tube body 1. One end of the nasogastric feeding tube body 1 is provided with a plug connector 4 which can be connected to a syringe 5, and the other end is provided with an outflow port 16. When the patient is given nasogastric feeding, the syringe 5 extracts the fluid for supplementing the patient's nutrition and then connects the injection port of the syringe 5 to the plug connector 4 of the nasogastric feeding tube body 1. By pushing the syringe 5, the fluid inside the syringe 5 can flow along the nasogastric feeding tube body 1 into the patient's stomach for digestion by the patient. There are two types of existing nasogastric feeding tube bodies 1, one is made of rubber and can be retained in the body for seven days, and the other is made of silicone and can be retained in the body for thirty to forty-five days. Both materials should adopt a transparent and bendable structure to facilitate insertion into the human body and observation of the state of the fluid. The above is an introduction to the existing nasogastric feeding nutrition device.

[0036] The main problems to be solved by the present invention are: first, after the existing nasogastric feeding tube is inserted into the human body, the foreign body sensation in the nasal cavity and pharynx is relatively strong, which can easily cause the patient to sneeze and vomit; second, the existing nasogastric feeding tube lacks an economical and simple flow rate monitoring device. In order to solve the above problems, the present invention is implemented in the following way.

[0037] On the basis of the above-mentioned prior art, a tube body 2 is provided at the central position of the nasofeeding tube body 1 (after the nasofeeding tube body 1 is inserted into the human body, the tube body 2 is located in the nasal cavity and the pharynx), and the outer wall diameter of the tube body 2 is smaller than the outer wall diameter of the nasofeeding tube body 1. Since the outer wall diameter of the tube body 2 is smaller, when the nasofeeding tube body 1 enters the interior of the human body, the foreign body sensation in the nasal cavity and the pharynx will be reduced, thereby improving the patient's comfort, thereby solving the first problem mentioned above.

[0038] In order to realize the visual monitoring of the nasogastric tube body 1, the present invention also sets the inner wall diameter of the tube body 2 to be smaller than the inner wall diameter of the nasogastric tube body 1, and an expandable indicator is provided on the nasogastric tube body 1 near the tube body 2, wherein the expandable indicator expands when subjected to pressure and recovers when the pressure decreases, and the greater the pressure, the greater the expansion. The flow rate of the nasogastric tube body 1 can be monitored by the expansion degree of the expandable indicator. The principle is referred to Fig.12, which is a pipe body having a first flared portion 17, a second flared portion 19 and a throat portion 18, wherein the throat portion 18 is located at the center of the first flared portion 17 and the second flared portion 19, and an expansion bag 15 is provided on the first flared portion 17. When the fluid flows from the first flared portion 17 to the second flared portion 19 at a certain flow rate V1, it needs to pass through the throat portion 18. Since the diameter of the throat portion 18 is smaller than the diameter of the first flared portion 17, according to the Bernoulli principle, the faster the flow rate inside the same pipe, the smaller the pressure, and the slower the flow rate, the greater the pressure. Therefore, when the fluid at the first flared portion 17 is about to pass through the throat portion 18, due to the sudden decrease in the pipe diameter, part of the fluid will be obstructed. Even rebound, resulting in a decrease in flow rate, at this time, the pressure P1 at the connection between the first flared portion 17 and the throat portion 18 will increase, the fluid entering the throat portion 18 will accelerate, and the speed will increase from V1 to V2, and the fluid pressure of the throat portion 18 will also decrease from P1 to P2. When the fluid inside the throat flows to the second flared portion 19, due to the increase in diameter, the flow rate will drop to V3, and the pressure will gradually increase from P2 to P3. Based on this phenomenon, if an expansion bag 15 is provided at the connection between the first flared portion 17 and the throat portion 18, when the flow rate is too fast, the increase in P1 will cause the expansion bag 15 to expand. The principle of the present invention will be further explained below in combination with the Bernoulli principle equation;

[0039] First, the Bernoulli equation is P+1 / 2ρv2+ρgh=C, where P is the pressure potential energy at a point in the fluid, V is the flow velocity of the fluid at that point, ρ is the fluid density, g is the acceleration of gravity, h is the height of the fluid at that point, and C is the total energy, where 1 / 2ρv2 is the kinetic energy of the fluid, and ρgh is the potential energy of the fluid. In the process of the fluid flowing from the first expansion part 17 to the throat part 18, since there is no height difference, the potential energy remains unchanged, and Fig.12 In the process of energy analysis of point B, part of the water flow is hindered by the cross section during the movement of the first expansion portion 17 to the throat portion 18, and the velocity direction collides with the subsequent forward velocity fluid in the opposite direction, causing the velocity to drop to zero, that is, the kinetic energy of the fluid is zero. At this time, for the energy C at point B, under the condition of energy conservation, its P value (pressure potential energy increases), and the more the kinetic energy decreases, the more the pressure potential energy increases. Since the greater the speed, the greater the kinetic energy, when the kinetic energy becomes zero, the more the pressure potential energy increases, and thus the expansion bag 15 installed in this part will expand to different degrees according to the flow velocity.

[0040] Based on the above principle, the first embodiment of the present invention, referring to Figure 2 and Figure 3 The expandable indicator is a cylindrical sac 3 located in the passage of the nasogastric tube body 1. When the internal pressure of the cylindrical sac 3 is high, the cylindrical sac 3 expands.

[0041] The second embodiment of the present invention is, referring to Figure 4 The expandable indicator is a balloon 6 installed on the side wall of the nasofeeding tube body 1. The interior of the balloon 6 is connected to the interior of the nasofeeding tube body 1. When the internal pressure of the nasofeeding tube body 1 is high, the fluid inside the nasofeeding tube body 1 enters the balloon 6, causing the balloon 6 to expand.

[0042] For further reference, Figure 6 and Figure 7 On the basis of the second embodiment, a branch tube 11 is integrally formed on the side wall of the nasogastric tube body 1, and the balloon 6 is detachably connected to the branch tube 11 through a connecting tube 12. Specifically, the connecting tube 12 and the branch tube 11 are detachably connected by a thread, which can facilitate the cleaning of the balloon 6.

[0043] The third embodiment of the present invention is, referring to Figure 5 The expandable indicator is a spiral convolution body 7 installed on the side wall of the tube body. The interior of the spiral convolution body 7 is connected to the interior of the nasogastric tube body 1. When the pressure inside the nasogastric tube body 1 is relatively high, the fluid inside the nasogastric tube body 1 enters into the interior of the spiral convolution body 7, causing the spiral convolution body 7 to deform toward a straight line state.

[0044] In combination with the above three embodiments, the first embodiment adopts a cylindrical balloon 3 located on the passage of the nasofeeding tube body 1. Since it is too soft, the part of the cylindrical balloon 3 is most likely to bend and thus most likely to be damaged. In addition, since its size is limited by the size of the nasofeeding tube body 1, it is generally larger and expands circumferentially when expanded, so the observation effect is also poor. In the second embodiment, the balloon 6 is installed on the side wall of the nasofeeding tube body 1. Its overall observability is easier to observe than that of the first embodiment, and it will not affect the overall strength of the nasofeeding tube body 1, but its expansion is still circumferential expansion. In the third embodiment, a vortex convolution body 7 is adopted, and its expansion is vertical expansion, so its observability is higher and will not affect the overall strength of the nasofeeding tube body 1.

[0045] Furthermore, a side hole 8 is provided on the side wall of one end of the nasogastric feeding tube body 1 inserted into the stomach (on the side wall of the end close to the outflow port 16), which can prevent the outflow port from being blocked and causing the inability to maintain normal nasogastric feeding.

[0046] For further reference, Fig.11 Since food residues may remain inside the indicator after installation and it cannot be cleaned, the connection between the tube body 2 and the part of the nasogastric tube body 1 equipped with the plug connector 4 is detachable. The detachable connection can be a threaded connection, that is, a first connector 9 with a threaded outer wall is provided at one end of the nasogastric tube body 1, and a second connector 10 with a threaded inner wall is provided at one end of the tube body 2 to achieve a threaded connection between the two. Of course, other detachable connection methods can also be used.

[0047] It should be further explained that there are three transition modes between the nasogastric tube body 1 and the tube body 2. The first mode is as follows: Figure 8 This method adopts a smooth transition mode, that is, there is a smooth transition portion 13 between the nasogastric tube body 1 and the tube body 2, and the smooth transition portion 13 is a shape in which the diameter gradually decreases from the nasogastric tube body 1 to the tube body 2. The second method, reference Fig. 9 In this method, a step portion 14 is used for transition between the nasogastric tube body 1 and the tube body 2, and the plane where the step portion 14 is located is perpendicular to the horizontal plane. The first method will cause the fluid kinetic energy to lose little kinetic energy in the area of ​​the expandable indicator, and the pressure potential energy to increase little, so it is easy to cause the expansion effect of the expandable indicator to be unclear, and the second method will cause edges and corners between the nasogastric tube body 1 and the tube body 2, which is easy to cause damage to the human body during insertion or removal. Based on this, the present invention preferably uses the third method for transition, referring to Fig.10 The outer wall of the nasogastric tube body 1 and the tube body 2 adopts a smooth transition portion 13 for transition to avoid damage to the human body, and the inner wall of the nasogastric tube and the tube body 2 adopts a stepped portion 14 for transition so that the fluid kinetic energy can drop rapidly at this location.

[0048] In summary, the present invention provides a nasogastric feeding nutrition device, which, when injecting fluid nutrients through the syringe 5, first passes through the end of the nasogastric feeding tube body 1 close to the plug connector, and then passes through the tube body 2. When the fluid is about to enter the tube body 2, the pressure potential energy will increase due to the partial reduction in kinetic energy, thereby enabling the inflatable indicator to expand, thereby achieving visual observation of the flow rate, and finally flows out from the end of the nasogastric feeding tube body 1 close to the outflow port 16. Since the diameter of the tube body is small, the fluid will slow down when it flows into the end of the nasogastric feeding tube body 1 close to the outflow port 16. At the same time, a side hole 8 is provided, which is equivalent to increasing the area of ​​the outlet, further reducing the speed of the fluid outflow, and reducing the impact on the stomach.

[0049] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A nasogastric feeding nutrition device, comprising a nasogastric feeding tube body (1) with outer wall diameters of both ends being a first diameter, the nasogastric feeding tube body (1) being a transparent and bendable tube, one end of the nasogastric feeding tube body (1) being provided with a plug connector (4) connectable to a syringe (5), the other end of the nasogastric feeding tube body (1) being provided with an outflow port (16), characterized in that: The central position of the nasogastric feeding tube body (1) comprises a tube body portion (2) whose outer wall diameter is a second diameter, wherein the second diameter is smaller than the first diameter, and an indicator is arranged at a position of the nasogastric feeding tube body (1) close to the tube body portion (2).

2. A nasogastric feeding nutrition device according to claim 1, characterized in that: The indicator is an expandable indicator for visually monitoring the flow rate inside the nasogastric feeding tube body (1); the inner wall diameter of the tube body (2) is smaller than the inner wall diameter of the nasogastric feeding tube body (1).

3. A nasogastric feeding nutrition device according to claim 2, characterized in that: The expandable indicator is a cylindrical sac (3) located in the passage of the nasogastric tube (1). When the internal pressure of the cylindrical sac (3) is high, the cylindrical sac (3) expands.

4. A nasogastric feeding nutrition device according to claim 2, characterized in that: The expandable indicator is a balloon (6) installed on the side wall of the nasogastric tube body (1), the interior of the balloon (6) is connected to the interior of the nasogastric tube body (1), and when the internal pressure of the nasogastric tube body (1) is high, the fluid inside the nasogastric tube body (1) enters the balloon (6), causing the balloon (6) to expand.

5. A nasogastric feeding nutrition device according to claim 2, characterized in that: The expandable indicator is a spiral convolution body (7) installed on the side wall of the tube body, the interior of the spiral convolution body (7) is connected to the interior of the nasogastric tube body (1), and when the pressure inside the nasogastric tube body (1) is relatively high, the fluid inside the nasogastric tube body (1) enters the interior of the spiral convolution body (7), causing the spiral convolution body (7) to deform toward a straight state.

6. The method for monitoring invasive alien plants according to claim 1, characterized in that: A side hole (8) is provided on the side wall of one end of the nasogastric feeding tube body (1) close to the outflow port (16).

7. A nasogastric feeding nutrition device according to claim 1, characterized in that: The connection between the tube body (2) and the nasogastric feeding tube body (1) equipped with the plug connector (4) is detachable.

8. A nasogastric feeding nutrition device according to claim 2, characterized in that: A branch tube (11) is integrally formed on the side wall of the nasogastric feeding tube body (1), and the balloon (6) is detachably connected to the branch tube (11) via a connecting tube (12).

9. A nasogastric feeding nutrition device according to claim 1, characterized in that: The inner wall of the connection between the nasogastric feeding tube body (1) and the tube body (2) has a stepped portion (14), and the outer wall of the connection between the nasogastric feeding tube body (1) and the tube body (2) has a smooth transition portion (13).

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