TWI599376B - Nasogastric tube and inflatable structure and manufacturing method thereof - Google Patents

Description

Nasal tube and its expandable unit and manufacturing method

The present invention relates to a nasogastric tube, and more particularly to a nasogastric tube having an expandable unit, an expandable unit thereof, and a method of manufacturing the same.

When the patient has difficulty swallowing due to various reasons such as coma, neck and neck disease, severe burns, cancer, or surgery, and cannot be fed by the mouth or the food is not well matched, a nasogastric tube should be placed from the nasal cavity. The stomach of the patient is assisted by the patient to eat or take the medicine by feeding.

Please refer to FIG. 1A and FIG. 1B. FIG. 1A is a schematic view of a conventional nasogastric tube; FIG. 1B is a schematic view of the nasogastric tube of FIG. 1A after being inserted into a patient. The nasogastric tube 4 includes a hollow tubular body 43 and a feeder joint 42 that is disposed at the proximal end 41 of the hollow tubular body 43. When the nasogastric tube 4 is set, the distal end 44 of the hollow tubular body 43 is inserted by the nostril of the patient P, and when the distal end 44 of the hollow tubular body 43 reaches the throat, the patient P needs to cooperate with the swallowing action or A few mouthfuls of water are sucked by the straw, so that the hollow tube body 43 can smoothly enter the stomach through the esophagus through the throat. However, since the hollow tube body 43 is of a soft material and the opening of the esophagus A4 is narrower than the opening of the trachea A5, even if the patient P cooperates to make a swallowing action, when the distal end 44 of the hollow tube body 43 reaches the epiglottis above the esophagus A4 ( When epiglottis), it is difficult for the medical staff to accurately control the hollow tube body 43 to smoothly insert the distal end 44 into the esophagus A4. It is possible to accidentally insert the nasogastric tube 4 into the oral cavity O or even the trachea A5, causing the patient to cough and cause inhalation. Pneumonia. That is, when the distal end 44 of the hollow tubular body 43 is far from the posterior pharyngeal wall A3 (as indicated by the broken line in Fig. 1B, the distance between the distal end 44 and the posterior pharyngeal wall A3 is D), the nasogastric tube 4 is easily Misplaced into the patient's oral cavity O or trachea A5); when the distal end 44 of the hollow tubular body 43 is closer to the posterior pharyngeal wall A3 (as shown by the solid line in Fig. 1B, the distance between the distal end 44 and the posterior pharyngeal wall A3) For D'), the distal end 44 of the nasogastric tube 4 can be smoothly inserted into the esophagus A4 of the patient. Therefore, it is necessary to set the distal end 44 of the nasogastric tube 4 as close as possible to the posterior pharyngeal wall A3 in order to avoid mis-insertion. Even for a medical professional with considerable experience, sometimes it is necessary to try several times to successfully set the nasogastric tube 4. If it is difficult to set up, even need to use additional auxiliary equipment (such as tongue depressor or Magill intubating forceps) to set the nasogastric tube 4 to the stomach of the patient P. All of the above processes will cause discomfort to the patient and waste a lot of medical time costs.

Therefore, if a nasogastric tube is provided which is convenient for the medical staff to set up smoothly, the medical staff can accurately insert the nasogastric tube into the esophagus and smoothly pass through the throat. In this way, in addition to reducing the patient's discomfort during the setting of the nasogastric tube, valuable medical time costs can be saved.

In view of the above problems, an object of the present invention is to provide a nasogastric tube whose operation is fixed to a position on the tubular body adjacent to the distal end by an expandable unit, when the filling fluid (including gas, liquid or semi-liquid, etc.) enters. When the unit is expanded, the pressure on the tubular body is caused, so that the distal end of the tubular body approaches or adheres to the posterior pharyngeal wall to avoid entering the mouth or trachea of the cannulated object.

To achieve the above object, the present invention provides a nasogastric tube for placement in the nasogastric portion of a patient. The patient's nose and stomach have a posterior pharyngeal wall, a turbinate, a nasopharyngeal posterior wall and a soft palate. The nasogastric tube includes a tubular body and an expandable unit. The tubular body has a major axis direction and includes a proximal end and a distal end, wherein the distal end is at a distance from the pharyngeal wall following the nasogastric portion. The expandable unit is fixed to the tubular body in a long axis direction and adjacent to the distal end. The expandable unit has a cavity in which one of the fluids in the cavity expands the expandable unit toward one side of the tubular body and presses down the tubular body, causing the distal end to rise upwardly and shortening the distance between the distal end and the posterior pharyngeal wall.

To achieve the above object, the present invention provides an expandable unit suitable for a nasogastric tube. The nasogastric tube is used to set the nose and stomach of a patient. The nasogastric area has a posterior pharyngeal wall, a turbinate, a nasopharyngeal posterior wall and a soft palate. And the nasogastric tube comprises a tubular body. The tubular body has a long axis direction and includes a proximal end and a distal end, wherein the distal end is at a distance from the pharyngeal wall behind the nasogastric portion. Wherein, the expandable unit is fixed on the tubular body along the long axis direction and adjacent to the distal end, and the expandable unit has a cavity, and the fluid filled into the cavity expands the expandable unit toward one side of the tubular body and presses the tubular body The distal end is raised upwards and the distance between the distal end and the posterior pharyngeal wall is shortened.

To achieve the above object, the present invention provides a method of making a nasogastric tube comprising providing a tubular body and providing an expandable unit on the tubular body. The tubular body has a long axis direction and includes a proximal end and a distal end. The expandable unit is fixed to the tubular body in a long axis direction and adjacent to the distal end. The expandable unit has a cavity. When a fluid is filled into the cavity, the expandable unit expands toward one side of the tubular body and presses down the tubular body to raise the distal end upward.

In one embodiment, after the expandable unit is adjacent to the end of the inferior turbinate or through the inferior turbinate, the cavity is filled with fluid to expand the expansion unit.

In one embodiment, the expandable unit is in a non-expanded state prior to or adjacent to the end of the inferior turbinate.

In one embodiment, the flow system is a gas, a liquid or a half liquid.

In one embodiment, the flow system for filling the cavity compresses the tubular body with the tubular body between the choanae and the soft palate.

In one embodiment, the proximal end has a first opening and a second opening, and the distal end has a third opening, and the tubular body further includes a first tube body and a second tube body. The first tube body has a first lumen, and the first lumen communicates with the first opening and the third opening. The second pipe body is disposed corresponding to the first pipe body, the second pipe body has a second pipe cavity, the expandable unit is disposed on one side of the second pipe body, and the second pipe cavity communicates with the second opening and the cavity.

In one embodiment, the nasogastric tube further includes a Y-shaped connector disposed at the proximal end and having a first interface and a second interface, wherein the first interface is in communication with the first lumen via the first opening, And the second interface is in communication with the second lumen via the second opening.

In an embodiment, the expandable unit is disposed 5 cm to 9 cm from the distal end.

In an embodiment, the expandable unit has a length of 4 cm to 8 cm along the long axis direction.

In an embodiment, the second tube body is sleeved on the first tube body.

In an embodiment, the first tube system is adjacent to the second tube body.

According to the present invention, a nasogastric tube and an expandable unit therefor, and a method of manufacturing the same, wherein the nasogastric tube has an expandable unit fixed to the tubular body and adjacent to the distal end, and the expandable unit has a cavity One of the fluids entering the cavity expands the expandable unit toward one side of the tubular body and presses down the tubular body, causing the distal end to rise upwardly and shortening the distance between the distal end and the posterior pharyngeal wall, whereby the distal end of the tubular body will be guided The patient's esophagus is not easily inserted into the patient's mouth or trachea. In this way, the medical staff can simply put the nasogastric tube through the throat to insert it into the esophagus and set it on the stomach, reducing the probability of setting failure. In this way, in addition to increasing the sense of control and confidence of the medical practitioners when setting the nasogastric tube, reducing the patient's resentment or fear of setting the nasogastric tube can also save valuable medical time costs.

Hereinafter, a nasogastric tube, an expandable unit thereof, and a manufacturing method according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings, wherein the same elements will be described with the same reference numerals.

Please refer to FIG. 2A to FIG. 2G. FIG. 2A is a schematic view of a nasogastric tube according to a preferred embodiment of the present invention. 2B is a schematic view of the nasogastric tube of FIG. 2A taken along line A-A. 2C is a partial cross-sectional view of the nasogastric tube of FIG. 2A along the long axis direction of the expandable unit. 2D is a schematic view of the nasogastric tube of FIG. 2C taken along line B-B. 2E is a partial schematic view of the nasogastric tube expandable unit of FIG. 2A when inflated. 2F is a schematic view of the nasogastric tube of FIG. 2E taken along line C-C. 2G and 2H are schematic views of the expansion of the expandable unit of the nasogastric tube of FIG. 2A after insertion into a patient.

As shown in Fig. 2A and Fig. 2G, the nasogastric tube 2 of the preferred embodiment of the present invention is for use in a nasogastric portion of a patient. Nasal stomach refers to the area from the nasal cavity to the stomach. After the nasogastric tube enters the nasal cavity of a patient, it will follow the inferior turbinate channel, the pharynx (including the nasopharynx, oropharynx, and hypopharynx). Set for the esophagus and stomach. The nasal stomach contains a posterior pharyngeal wall A3, a lower turbinate A6, a nasopharyngeal posterior superior wall A2 and a soft palate Pt. The posterior superior wall of the nasopharynx refers to the area above the nasopharynx near the posterior end, as indicated by A2 in Fig. 2A. The nasogastric tube 2 of the preferred embodiment of the invention comprises a tubular body 1 and an expandable unit 122. The tubular body 1 has a longitudinal direction DL including a proximal end E1 and a distal end E2, and the expandable unit 122 is fixed to the tubular body 1 in the longitudinal direction DL and adjacent to the distal end E2. The tubular body 1 is at a distance D from the posterior pharyngeal wall A3.

The tubular body 1 can be selected to be soft and not susceptible to deterioration and to make the patient feel more comfortable, such as silicone. Moreover, after the nasogastric tube 2 enters the nasal cavity of a patient, it will be placed in the patient's body along the inferior turbinate channel, the pharynx (including the nasopharynx, oropharynx, hypopharynx), the esophagus and the stomach. In actual use, the proximal E1 is used as the injection end of the nasogastric tube 2 for the entrance of the food (feeding) and the outlet of the liquid in the stomach of the patient; and the distal E2 is made. The introduction end of the nasogastric tube 2 is introduced into the front end of the esophagus A4 after being inserted into the nasal cavity during the setting of the nasogastric tube 2.

Referring to FIG. 2B , the tubular body 1 of the preferred embodiment further includes a first tube body 11 and a second tube body 12 . The first tube body 11 has a first lumen 111 and a second tube. The body 12 is disposed corresponding to the first tube body 11, and the second tube body 12 has a second tube chamber 121. Moreover, the first tube body 11 and the second tube body 12 of the nasogastric tube 2 are arranged in a double chamber type along the longitudinal direction DL of the tubular body 1, and can also be said to be a nasogastric tube having a side-by-side tube. . Further, as shown in FIG. 2B, the first tubular body 11 and the second tubular body 12 may preferably be made of the same material and integrally formed.

As shown in FIG. 2A and FIG. 2B, the proximal end E1 of the tubular body 1 has two openings, which are a first opening O1 and a second opening O2, respectively. On the other hand, the distal end of the distal end E2 has a first end. Three openings O3. The first lumen 111 communicates with the first opening O1 and the third opening O3. That is to say, the first pipe body 11 belongs to an integral open pipeline, and the openings at the proximal end E1 and the distal end E2 are the first opening O1 and the third opening O3, respectively. The second lumen 121 communicates with the second opening O2 and is closed at the distal end E2. That is, the second tubular body 12 belongs to a single open closed conduit that is open at one end and closed at the other end. As shown in FIG. 2C, the first opening O1 at the proximal end E1 of the tubular body 1 is the first lumen 111, and the second opening O2 is the second lumen 121. In the present embodiment, as described above, both the first tubular body 11 and the second tubular body 12 may be integrally formed such that the tubular body 1 can still be a circular tubular body, but the first lumen 111 and the first lumen 111 The two lumens 121 are still unaffected by each other and can be used independently for different purposes.

2A, 2C, and 2D, the expandable unit 122 can be, for example, an inflatable balloon, a balloon, or a sponge, which is elastically expandable or contractible, and disposed between the proximal end E1 and the distal end E2, and Adjacent to the far end E2. The expandable unit 122 is disposed at a distance of 5 cm to 9 cm from the distal end E2. The expandable unit 122 has a length of 4 cm to 8 cm along the long axis direction DL. Moreover, the expandable unit 122 also has a cavity C that communicates with the second lumen 121 via a gap in the wall of the second tubular body 12. After the cavity C is filled with a fluid (which may be a gas, a liquid or a semi-liquid), the expandable unit 122 can be expanded toward one side of the tubular body 1 and the tubular body 1 can be pressed down, so that the distal end E2 is lifted up and far away. The distance between the end and the posterior pharyngeal wall A3 is shortened or attached to the posterior pharyngeal wall A3 (as shown in Figure 2H) to guide the distal end E2 into an esophagus A4. Wherein the liquid can be a physiological saline solution; a semi-liquid such as a colloid, an emulsion or a solid-liquid mixture. The process in which the expandable unit 122 expands toward one side of the tubular body 1 and presses down the tubular body 1 will be described later.

Further, in the present embodiment, the expandable unit 122 is disposed on the second tube body 12 of the tubular body 1 along the long axis direction DL and is disposed on one side of the second tube body 12. And the second lumen 121 is connected to the second opening O2 and the cavity C. That is, as shown in FIGS. 2A and 2D, the second tube body 12 is provided with an expandable unit 122 on a part of the tube wall on one side of the distal end E2. In short, the expandable unit 122 in this embodiment is disposed adjacent to the end position of the distal end E2 and disposed on one side of the second tubular body 12.

The nasogastric tube 2 can be further used in conjunction with a Y-joint 3, which is disposed at the proximal end E1 of the tubular body 1. The Y-type connector 3 further has a first interface 31 and a second interface 32, wherein the first interface 31 communicates with the first lumen 111 via the first opening O1, and the second interface 32 passes through the second opening O2. It is in communication with the second lumen 121.

In practical application, the medical staff can connect the filling device (not shown) to the first interface 31 of the Y-joint 3, and the fluid food or medicine through the first opening O1, the first lumen 111 and the third opening O3. Infused into the stomach of the patient. On the other hand, the second interface 32 is for use as a fluid for filling the expandable unit 122 or for venting or withdrawing the fluid to be filled. The usage is as described later.

In actual use, the medical staff can also use the second interface 32 of the Y-type connector 3 to fill the second lumen 121 with fluid, and the filled fluid is filled into the second lumen 121 via the second opening O2, and The fluid is further charged into the cavity C such that the expandable unit 122 expands toward one side of the second tubular body 12.

In addition, when the expandable unit 122 is adjacent to the patient's lower turbinate A6 end or before the lower turbinate A6, as shown in FIG. 2D, when the medical staff has not yet passed from the second interface 32 of the Y-joint 3 via the second opening O2 The cavity C in which the second lumen 121 communicates is filled with fluid, so that the expandable unit 122 has not expanded at this time. That is, the expandable unit 122 is in a non-expanded state before the expandable unit 122 is adjacent to the patient's lower turbinate A6 end or past the inferior turbinate A6.

Referring to FIG. 2E and FIG. 2F, the cavity C of the expandable unit 122 is shown as the second lumen 32 of the Y-joint 3 is filled with fluid, and the expandable unit 122 will be due to the cavity C. Filled with fluid and expanded outward. Referring again to the arrow shown in FIG. 2C, the arrow in FIG. 2C indicates the force generated when the expandable unit 122 is inflated, and the expandable unit 122 is only directed to one side of the second tube 12 (as shown in the figure) The upward direction of the expansion is shown, and the force exerted on the tubular body 1 by the expandable unit 122 due to expansion will be applied to the tubular body 1, that is, the fluid filled into the cavity C will cause pressure on the tubular body 1, and The tubular body 1 is pressed against the nasopharynx posterior wall A2 and the soft palate Pt (shown in Figure 2H); more specifically, the tubular body 1 is pressed against the nasopharynx posterior wall A2 Below the soft 颚Pt rear side. In addition, due to the surface tension factor, the curved and expanded surface of the expandable unit 122 and the edge to which the second tubular body 12 is connected will be subjected to an inward and upward component force, so that the distal end E2 is lifted upward and shortened with the posterior pharynx. The distance of the wall A3 is attached to the posterior pharyngeal wall A3. That is, as shown in FIG. 2G, when the cavity C is filled with the fluid, the expandable unit 122 can be inflated toward one side of the tubular body 1 due to the rigidity of the tubular body 1 itself and the surface tension of the expandable unit 122. Pressing the tubular body 1 and pressing it between the anterior wall A2 and the soft palate Pt (below the posterior superior wall A2 of the nasopharynx and the posterior side of the soft palate Pt), while making the distal end E2 as shown by the dashed line The position is raised up to the position shown by the solid line. Thereby, the distal end E2 will approach the posterior pharyngeal wall A3 of the patient P (shortening the distance between the distal end E2 and the posterior pharyngeal wall A3 or attaching the distal end E2 to the posterior pharyngeal wall A3) to guide the distal end E2 into One esophagus A4.

Please refer to FIG. 2G and FIG. 2H again to further illustrate the manner of use of the nasogastric tube 2. As shown in Fig. 2G, when the nasogastric tube 2 is placed in the patient P, the medical staff inserts the distal end E2 of the nasogastric tube 2 into the nostril of the patient P, and then the distal E2 sequentially passes through the lower nasal passage. N6 enters the nasopharyngeal (nasopharynx) A1. At this point, the healthcare professional can know from the position of the marker M provided on the tubular body 1 (eg, the marker M has been seen at the nostril of the patient P) that the expandable unit 122 has been adjacent to the end of the lower turbinate A6 or through the inferior turbinate A6. When the expandable unit 122 is adjacent to the end of the lower turbinate A6 or through the lower turbinate A6, and the distal end E2 is now located in the oropharynx above the esophagus A4, the medical staff can be the second from the Y-joint 3 The interface 32 is filled with fluid, and the charged fluid is charged into the second lumen 121 through the second opening O2 and into the cavity C, causing the expandable unit 122 to expand along one side of the radial direction of the tubular body 1.

Next, as shown in FIG. 2H, the medical staff continues to fill the fluid to the cavity C to continue to expand the expandable unit 122; the expandable unit 122 is in the expanded state, which faces the radial direction of the tubular body 1 (eg, The width of the top portion shown in Figure 2F is more pronounced than the other directions. At the same time, the medical staff continues to insert the tubular body 1 so that the expandable unit 122 expands and advances toward the throat of the patient, thereby causing the expandable unit 122 to abut the choanae A2 of the nasopharynx of the patient P. At this time, the expandable unit 122 cannot continue to expand toward the posterior wall A2 of the nasopharynx. However, since the continuously filled fluid causes the pressure inside the expandable unit 122 to continuously increase, the expandable unit 122 causes the tubular body 1 to be pressed against the pressure of the tubular body 1 in the direction below the posterior superior wall A2 of the nasopharynx. And the tubular body 1 is abutted between the posterior wall A2 of the nasopharynx and the soft palate Pt (below the posterior superior wall A2 of the nasopharynx and the posterior side of the soft palate Pt), and since the tubular body 1 itself is rigid The factor and the reaction force provided by the tubular body 1 of the region behind the nasopharynx posterior superior wall A2 and the soft palate Pt are matched with the curved expansion surface of the expandable unit 122 and the edge connected to the second tubular body 12 The inward and upward component forces will collectively cause the distal end E2 to approach or even attach to the posterior pharyngeal wall A3. Thereby, the distal end E2 will enter the esophagus A4 along the posterior pharyngeal wall A3 of the patient P. Therefore, in this way, the distance between the distal end E2 of the tubular body 1 and the posterior pharyngeal wall A3 can be shortened or attached to the posterior pharyngeal wall A3, and the probability of the distal end of the nasogastric tube E2 entering the esophagus A4 is increased, and the distal end E2 is lowered. The probability of entering the trachea A5 or oral O of the patient P.

In addition, when the distal end E2 is close to the posterior pharyngeal wall A3 of the patient P and smoothly passes through the oropharynx or into the esophagus A4, the medical staff can pass the second lumen 32 of the Y-joint 3 to the second lumen. The fluid filled in 121 is vented or withdrawn, and the expanded expandable unit 122 is contracted, and the tubular body 1 can continue down to the esophagus A4.

After the distal end E2 is set in the stomach of the patient P, the medical staff can inject the liquid food or medicine into the patient P through the first opening O1 and the first lumen 111 through the first interface 31 of the Y-joint 3 The stomach, or the drainage action from it.

The present invention also provides another preferred embodiment, which is also a nasogastric tube. Please refer to FIG. 3A to FIG. 3E. FIG. 3A is a schematic view of a nasogastric tube according to another preferred embodiment of the present invention. Figure 3B is a schematic illustration of the nasogastric tube of Figure 3A taken along line D-D. Figure 3C is a schematic illustration of the nasogastric tube of Figure 3A taken along the E-E section line. Figure 3D is a partial schematic view of the nasogastric tube expandable unit of Figure 3A as it expands. 3E is a schematic view of the nasogastric tube of FIG. 3D along the G-G section line.

In Fig. 3A, the nasogastric tube 2a has substantially the same element and element connection relationship as the nasogastric tube 2 of the previous embodiment. However, in the present embodiment, the tubular body 1a of the nasogastric tube 2a has a partially different structure from the tubular body 1 of the nasogastric tube 2. The difference is that the second tube body 12 of the tubular body 1a is sleeved outside the first tube body 11. Therefore, the first tube body 11 is covered by the second tube body 12 to form a coaxial tube (co -axial) or the dual cavity pattern of the tube in the tube. The first tube body 11 has a first lumen 111, the second tube body 12 is disposed corresponding to the first tube body 11, the second tube body 12 has a second tube chamber 121, and the expandable unit 122 is disposed at the first portion Two tube body 12. In addition, the expandable unit 122 in this embodiment is also disposed on one side of the second tubular body 12. In addition, the front and rear ends of the expandable unit 122 are respectively tied or fixed to the second tube 12 by a connecting member F, without loosening or flying off during the use of the nasogastric tube 2.

Referring to FIG. 3B at the same time, the expandable unit 122 is disposed on a portion of the pipe wall of the second pipe body 12. In this embodiment, since the first tube body 11 and the second tube body 12 are a double-cavity structure of a coaxial tube or a tube-in-tube tube, the radial cross-section of the tubular body 1a also presents a second lumen 121 surrounding the first tube. The cavity 111 is concentrically shaped, and a certain side of the tube wall of the second tube 12 is partially provided with an expandable unit 122, as shown in Fig. 3C.

Please refer to FIG. 2G, FIG. 3D and FIG. 3E at the same time. When the expandable unit 122 of the tubular body 1a is adjacent to the end of the lower turbinate A6 or passes through the lower turbinate A6, the medical staff can also use the second interface (not shown) of the Y-joint to fill the second lumen 121 with fluid. The filled fluid is filled into the cavity C of the second lumen 121 via the second opening O2, causing the expandable unit 122 to expand toward one side of the second tubular body 12. At this time, the expandable unit 122 also swells against the end of the posterior nasopharynx A2 and/or the lower turbinate A6, and the distal end of the distal end E2 is lifted upward toward the posterior pharyngeal wall A3, and the front is far The distance between the end E2 and the posterior pharyngeal wall A3 is shortened or attached to the posterior pharyngeal wall A3. Further, the entire tubular body 1a can also smoothly extend into the esophagus A4 along the posterior pharyngeal wall A3 of the patient P until it is placed in the stomach of the patient P.

In addition, other technical features of the nasogastric tube 2a can be referred to the nasogastric tube 2 of the above preferred embodiment of the present invention, and details are not described herein again.

In addition, the present invention also provides an expandable unit suitable for a nasogastric tube. The nasogastric tube is used to set the nose and stomach of a patient. The nasogastric area has a posterior pharyngeal wall, a turbinate, a nasopharyngeal posterior wall and a soft palate. The nasogastric tube contains a tubular body. The tubular body has a long axis direction and includes a proximal end and a distal end, wherein the distal end is at a distance from the pharyngeal wall behind the nasogastric portion. Wherein, the expandable unit is fixed on the tubular body along the long axis direction and adjacent to the distal end. The expandable unit has a cavity, and a fluid filled in the cavity expands the expandable unit toward one side of the tubular body and presses the tubular body downward, so that the distal end is lifted upward and the distance between the distal end and the posterior pharyngeal wall is shortened to guide The distal end enters the esophagus. In addition, the connection relationship between the components of the various components of the expandable unit, the changing manners, and the other components are the same as those described in the previous embodiments, and details are not described herein again.

Further, the present invention provides a method of manufacturing a nasogastric tube. The method of making a nasogastric tube of the present invention comprises providing a tubular body and providing an expandable unit on the tubular body. The tubular body has a long axis direction and includes a proximal end and a distal end. The expandable unit is fixed to the tubular body in a long axis direction and adjacent to the distal end. The expandable unit has a cavity. When a fluid is filled into the cavity, the expandable unit expands toward one side of the tubular body and presses down the tubular body to raise the distal end upward. The composition of the various parts of the nasogastric tube manufactured by the method of the present invention, and the connection relationship between the different aspects and the other components are the same as those described in the previous embodiments, and will not be described herein.

Finally, the present invention also provides a method for setting a nasogastric tube. Please refer to FIG. 4, which is a flow chart of steps of a method for setting a nasogastric tube according to still another preferred embodiment of the present invention. Figure 4 illustrates how the nasogastric tube of the present invention can be placed in the stomach of a patient, and the nasogastric tube comprises a tubular body and an expandable unit. The tubular body has a long axis direction and includes a proximal end and a distal end. The expandable unit is fixed to the tubular body along the long axis direction and adjacent to the distal end. The expandable unit has a cavity. For the other structures of the nasogastric tube and the connection relationship of the components used in the present embodiment, reference may be made to the above preferred embodiments, and details are not described herein again.

The setting method steps are as follows. First, the distal end of the nasogastric tube must be inserted into the nasopharynx of the patient (step S01), and then, when the expandable unit is adjacent to one of the patient's inferior turbinate or after the patient's turbinate Filling a fluid into the cavity, thereby expanding the expandable unit toward one side of the tubular body and pressing the tubular body downward so that the distal end is lifted upward and the distance between the distal end and the patient's pharyngeal wall is shortened (step S02) Finally, the distal end of the nasogastric tube is guided into one of the esophagus of the patient (step S03). Through the above three steps or setting methods, the nasogastric tube can be smoothly placed on the stomach of the patient.

In addition, in step S03, before the step of guiding the distal end of the nasogastric tube into the esophagus of the patient, the method further comprises the step of causing the fluid to contract through the second lumen and expelling from the second interface to expand the expandable expandable unit.

In addition, other technical features of the method for setting the nasogastric tube can be referred to the related description of the previous embodiments of the present invention, and details are not described herein again.

In summary, according to the present invention, a nasogastric tube and an expandable unit thereof and a manufacturing method thereof, since the nasogastric tube has an expandable unit fixed to the tubular body and adjacent to the distal end, and the expandable unit has a cavity, the charge One of the fluids entering the cavity expands the expandable unit toward one side of the tubular body and presses down the tubular body, causing the distal end to rise upwardly and shortening the distance between the distal end and the posterior pharyngeal wall, whereby the distal end of the tubular body will be guided And enter the patient's esophagus. In this way, the medical staff can simply put the nasogastric tube through the throat to insert it into the esophagus and set it on the stomach, reducing the probability of setting failure. In this way, in addition to increasing the sense of control and confidence of the medical practitioners to set the nasogastric tube, reducing the patient's resentment or fear of setting the nasogastric tube can also save valuable medical time costs.

The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the invention are intended to be included in the scope of the appended claims.

2, 2a‧‧‧ Nasogastric tube
1, 1a‧‧ ‧ tubular body
11‧‧‧First tube
111‧‧‧First lumen
12‧‧‧Second body
121‧‧‧Second lumen
122‧‧‧Expandable unit
3‧‧‧Y type connector
31‧‧‧ first interface
32‧‧‧second interface
41. E1‧‧‧ proximal end
42‧‧‧ feeder connector
43‧‧‧ hollow body
44, E2‧‧‧ remote
AA, BB, CC, DD, EE, GG‧‧‧ hatching
A1‧‧‧ Nasopharyngeal
A2‧‧‧The posterior wall of the nasopharynx
A3‧‧‧After the pharyngeal wall
A4‧‧‧ Esophagus
A5‧‧‧ trachea
A6‧‧‧Lower Turbines
C‧‧‧cavity
D, D'‧‧‧The distance between the short and the posterior pharyngeal wall
D _L ‧‧‧Long-axis direction
F‧‧‧Connecting parts
N6‧‧‧ lower turbinate channel
O1‧‧‧ first opening
O2‧‧‧ second opening
O3‧‧‧ third opening
P‧‧‧ Patients
Pt‧‧‧Software
S01～S03‧‧‧Steps

Figure 1A is a schematic view of a conventional nasogastric tube. Figure 1B is a schematic illustration of the nasogastric tube of Figure 1A after insertion into a patient. 2A is a schematic view of a nasogastric tube in accordance with a preferred embodiment of the present invention. 2B is a schematic view of the nasogastric tube of FIG. 2A taken along line A-A. 2C is a partial cross-sectional view of the nasogastric tube of FIG. 2A along the long axis direction of the expandable unit. 2D is a schematic view of the nasogastric tube of FIG. 2C taken along line B-B. 2E is a partial schematic view of the nasogastric tube expandable unit of FIG. 2A when inflated. 2F is a schematic view of the nasogastric tube of FIG. 2E taken along line C-C. 2G and 2H are schematic views of the nasogastric tube of FIG. 2A when the expandable unit is inflated after insertion into a patient. 3A is a schematic view of a nasogastric tube according to another preferred embodiment of the present invention. Figure 3B is a schematic illustration of the nasogastric tube of Figure 3A taken along line D-D. Figure 3C is a schematic illustration of the nasogastric tube of Figure 3A taken along the E-E section line. Figure 3D is a partial schematic view of the nasogastric tube expandable unit of Figure 3A as it expands. 3E is a schematic view of the nasogastric tube of FIG. 3D along the G-G section line. Figure 4 is a flow chart showing the steps of setting the nasogastric tube of the present invention.

no

no

2‧‧‧ Nasogastric tube

1‧‧‧Tube body

122‧‧‧Expandable unit

3‧‧‧Y type connector

31‧‧‧ first interface

32‧‧‧second interface

E1‧‧‧ proximal end

E2‧‧‧Remote

A-A‧‧‧ hatching

D _L ‧‧‧Long-axis direction

O3‧‧‧ third opening

Claims (29)

A nasogastric tube for setting in a nasogastric portion, wherein the nasogastric portion has a posterior pharyngeal wall, a lower turbinate, a nasopharyngeal posterior superior wall and a soft palate, the nasogastric tube comprising: a tubular body, Having a major axis direction, including a proximal end and a distal end, wherein the distal end is at a distance from the pharyngeal wall behind the nasogastric portion; and an expandable unit is secured to the tubular body along the longitudinal axis and Adjacent to the distal end, the expandable unit has a cavity, wherein a fluid filled in the cavity expands the expandable unit toward one side of the tubular body and presses the tubular body, causing the distal end to rise upward and The distance between the distal end and the posterior pharyngeal wall is shortened. The nasogastric tube of claim 1, wherein the cavity is filled with the fluid to expand the expansion unit when the expandable unit is adjacent to or through the end of the nasal capillaries of the nasogastric portion. The nasogastric tube of claim 1, wherein the expandable unit is in a non-expanded state before or adjacent to the end of the inferior turbinate. The nasogastric tube of claim 1, wherein the flow system is a gas, a liquid or a half liquid. The nasogastric tube according to claim 1, wherein the flow system filled in the cavity presses the tubular body with the tubular body and the tubular body against the posterior wall of the nasopharynx and the soft palate . The nasogastric tube of claim 1, wherein the expandable unit is disposed at a distance of 5 cm to 9 cm from the distal end. The nasogastric tube according to claim 1, wherein the expandable unit has a length of 4 cm to 8 cm along the long axis direction. The nasogastric tube of claim 1, wherein the proximal end has a first opening and a second opening, the distal end has a third opening, and the tubular body further comprises: a first tube Having a first lumen, the first lumen communicating with the first opening and the third opening; and a second tubular body corresponding to the first tubular body, the second tubular body having a second tubular body a cavity, the expandable unit is disposed on one side of the second tube, and the second tube communicates with the second opening and the cavity. The nasogastric tube of claim 8, further comprising a Y-shaped connector disposed at the proximal end and having a first interface and a second interface, wherein the first interface is via the first An opening is in communication with the first lumen, and the second interface is in communication with the second lumen via the second opening. The nasogastric tube of claim 8, wherein the second tube is sleeved on the first tube. The nasogastric tube of claim 8, wherein the first tube system is adjacent to the second tube. An expandable unit for a nasogastric tube for placement in a nasal stomach, wherein the nasogastric portion has a posterior pharyngeal wall, a turbinate, a nasopharyngeal posterior wall and a soft palate The nasogastric tube includes a tubular body having a long axis direction, and the tubular body includes a proximal end and a distal end, wherein the distal end is at a distance from the pharyngeal wall behind the nasogastric portion, wherein The expandable unit is fixed to the tubular body along the long axis direction and adjacent to the distal end, the expandable unit has a cavity into which one of the fluids is filled to move the expandable unit toward one side of the tubular body The tubular body is inflated and depressed to raise the distal end upwardly and to shorten the distance between the distal end and the posterior pharyngeal wall. The expandable unit of claim 12, wherein the cavity is filled with the fluid to expand the expansion unit when the expandable unit is adjacent to or passes through the end of the inferior turbinate. The expandable unit of claim 12, wherein the expandable unit is in a non-expanded state before or adjacent to the end of the inferior turbinate. The expandable unit of claim 12, wherein the flow system is a gas, a liquid or a half liquid. The expandable unit according to claim 12, wherein the flow system filled in the cavity presses the tubular body with the tubular body and abuts between the upper wall of the nasopharynx and the soft palate . The expandable unit of claim 12, wherein the expandable unit is disposed at a distance of 5 cm to 9 cm from the distal end. The expandable unit of claim 12, wherein the expandable unit has a length of 4 cm to 8 cm along the long axis direction. The expandable unit of claim 12, wherein the proximal end has a first opening and a second opening, the distal end has a third opening, and the tubular body further comprises: a first tubular body Having a first lumen, the first lumen communicating with the first opening and the third opening; and a second tubular body corresponding to the first tubular body, the second tubular body having a second tubular body a cavity, the expandable unit is disposed on one side of the second tube, and the second tube communicates with the second opening and the cavity. The expandable unit of claim 19, wherein the nasogastric tube further comprises a Y-shaped joint disposed at the proximal end and having a first interface and a second interface, wherein the first interface An interface is in communication with the first lumen via the first opening, and the second interface is in communication with the second lumen via the second opening. The expandable unit of claim 19, wherein the second tubular body is sleeved on the first tubular body. The expandable unit of claim 19, wherein the first tube system is adjacent to the second tube. A method of making a nasogastric tube, comprising: providing a tubular body having a major axis direction including a proximal end and a distal end; and providing an expandable unit on the tubular body along a major axis direction, An expandable unit is fixed to the tubular body and adjacent to the distal end, the expandable unit has a cavity; wherein when a fluid is filled into the cavity, the expandable unit expands and descends to one side of the tubular body The tubular body is pressed to raise the distal end upward. The method of producing a nasogastric tube according to claim 23, wherein the expandable unit is disposed at a distance of 5 cm to 9 cm from the distal end. The method of producing a nasogastric tube according to claim 23, wherein the expandable unit has a length of 4 cm to 8 cm along the long axis direction. The method of manufacturing a nasogastric tube according to claim 23, wherein the proximal end has a first opening and a second opening, the distal end has a third opening, and the tubular body further comprises: a first a tube having a first lumen, the first lumen communicating with the first opening and the third opening; and a second tubular body corresponding to the first tubular body, the second tubular body having a a second lumen, the expandable unit is disposed on the second tubular body, and the second lumen communicates with the second opening and the cavity. The method of manufacturing a nasogastric tube according to claim 26, wherein the nasogastric tube further comprises a Y-shaped joint disposed at the proximal end and having a first interface and a second interface, The first interface is in communication with the first lumen via the first opening, and the second interface is in communication with the second lumen via the second opening. The method of manufacturing a nasogastric tube according to claim 26, wherein the second tube body is sleeved on the first tube body. The method of manufacturing a nasogastric tube according to claim 26, wherein the first tube system is adjacent to the second tube.