A pressure measuring device integrating intranasal pressure and esophageal pressure measurement

Abstract

This invention relates to a pressure measuring device that integrates nasal and esophageal pressure measurements, belonging to the field of medical device technology. This invention solves the problem of the high operational difficulty and time-consuming nature of existing devices that use two different devices to monitor esophageal and airway pressures separately. An esophageal tube, a cuff tube, a ventilation tube, and a nasal tube are all inserted into a nasal plug. The cuff is installed on the esophageal tube, and a first pressure sensor is connected to the other end of the cuff tube. A feeding hole is opened on the side wall of one end of the esophageal tube, and an air hole is opened on the esophageal tube near the cuff end. One end of the ventilation tube communicates with the air hole through the interior of the esophageal tube. A second pressure sensor is connected to one end of the nasal tube. Esophageal pressure is obtained through the first pressure sensor connected to the cuff, and nasal pressure is obtained through the second pressure sensor. Thus, a single device can simultaneously obtain the actual data of both esophageal and nasal pressures, effectively simplifying operation and shortening the operation time.

Description

Technical Field

[0001] This utility model relates to a pressure measuring device that integrates nasal cavity pressure and esophageal pressure measurement, belonging to the field of medical device technology. Background Technology

[0002] Esophageal pressure (Pes) refers to the pressure at the junction of the middle and lower third of the esophagus during steady breathing. Due to the anatomical relationship between the esophagus and the thoracic cavity, esophageal pressure can serve as a valid surrogate indicator of thoracic pressure. Clinically, esophageal pressure monitoring is used to assess respiratory mechanics and evaluate the patient's effort during respiratory muscle activity. Esophageal pressure monitoring is a minimally invasive method that measures changes in esophageal pressure by placing a cuffed catheter in the esophagus, thereby indirectly reflecting changes in intrapleural pressure. This method is used in mechanically ventilated patients to guide the setting of respiratory support levels, such as adjusting positive end-expiratory pressure (PEEP).

[0003] Early physiological studies compared esophageal pressure fluctuations with nasal and oral pressure fluctuations, finding no phase difference between pressure waveforms as inspiratory effort increased. Research indicates that in patients with spontaneously breathing acute respiratory failure (ARF), nasal pressure fluctuations (ΔPnose) and esophageal pressure fluctuations (ΔPes) are highly correlated during Cheyne-Stokes respiration. This correlation suggests that nasal pressure fluctuations could serve as a potential indicator for assessing spontaneous breathing effort. Therefore, in some cases, nasal pressure measurement can supplement or replace esophageal pressure measurement, especially when esophageal pressure measurement is inconvenient. In studies of diseases such as respiratory failure, monitoring esophageal pressure allows healthcare professionals to understand the patient's inspiratory effort, even though esophageal tube placement is a complex procedure with some degree of minimal invasiveness.

[0004] Because there is a significant correlation between esophageal pressure fluctuations and nasal pressure fluctuations, nasal pressure monitoring is significantly easier than esophageal pressure monitoring. To reduce the difficulty for medical staff and shorten the operation time, research on esophageal pressure and nasal pressure is essential. However, in the research process, there is a lack of corresponding devices to assist researchers in monitoring esophageal pressure and nasal pressure. Often, two different devices are used to monitor esophageal pressure and airway pressure separately, which is complicated and time-consuming. Utility Model Content

[0005] The present invention aims to solve the problem that the existing method of using two different devices to monitor esophageal pressure and airway pressure separately is difficult to operate and takes a long time. Therefore, it provides a pressure measuring device that integrates the measurement of intranasal pressure and esophageal pressure.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0007] A pressure measuring device integrating nasal and esophageal pressure measurement includes an esophageal tube, a cuff, a cuff tube, a ventilation tube, a nasal tube, and a nasal plug. The esophageal tube, cuff tube, ventilation tube, and nasal tube are all mounted on the nasal plug. The cuff is installed on the esophageal tube. One end of the cuff tube is connected to the cuff, and the other end of the cuff tube is connected to a first pressure sensor. A feeding hole is opened on the side wall of one end of the esophageal tube, and an air hole is opened on the esophageal tube near the cuff end. One end of the ventilation tube is connected to the air hole through the inside of the esophageal tube, and the other end of the ventilation tube is located outside the esophageal tube. A second pressure sensor is connected to one end of the nasal tube. The other ends of the ventilation tube, the esophageal tube, the cuff tube, and the nasal tube are all located on the same side of the nasal plug.

[0008] Furthermore, the nasal plug has a first through hole and a second through hole inside, the nasal catheter is inserted into the first through hole, and the esophageal catheter, the ventilation catheter and the balloon catheter are inserted into the second through hole.

[0009] Furthermore, the nasal plug has a tapering structure along its length, and the small diameter end of the nasal plug is arc-shaped.

[0010] Furthermore, the large-diameter end of the nasal plug is machined with a raised edge along its circumference.

[0011] Furthermore, the airbag is made of thin-walled polyethylene, and the esophageal tube and nasal tube are both made of polyurethane or polyethylene.

[0012] Furthermore, the nasal plug is made of a flexible material.

[0013] Furthermore, the ventilation tube is placed inside the esophageal tube.

[0014] Furthermore, one end of the esophageal duct is closed.

[0015] Furthermore, the airbag is fitted onto the esophageal tube.

[0016] Furthermore, there are multiple feeding holes.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] Esophageal pressure is obtained through a first pressure sensor connected to the airbag, while the nasal plug blocks one nostril, keeping it relatively closed. At this time, the intranasal pressure can be obtained through a second pressure sensor. Thus, the actual data of esophageal pressure and intranasal pressure can be obtained simultaneously through a single device, which effectively simplifies the operation for researchers and shortens the operation time.

[0019] Food or nutrient solution can also be injected through an esophageal tube, flowing out through the feeding hole along the esophageal tube, to ensure feeding and nutrient solution infusion for patients who cannot eat on their own. This avoids the pain caused by frequent tube removal and replacement, and also reduces the workload of medical staff. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a front view schematic diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the main sectional view of nasal congestion.

[0023] In the picture:

[0024] 1. Esophageal tube; 11. Feeding hole; 12. Air hole; 2. Air sac; 3. Air sac tube; 4. Ventilation tube; 5. Nasal tube; 6. Nasal plug; 61. First through hole; 62. Second through hole; 63. Raised edge. Detailed Implementation

[0025] Specific implementation method one: Combining Figure 1 and Figure 2 The technical solution of this utility model is clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments.

[0026] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] A pressure measuring device integrating nasal and esophageal pressure measurement includes an esophageal tube 1, an air bag 2, an air bag catheter 3, a ventilation catheter 4, a nasal catheter 5, and a nasal plug 6. The esophageal tube 1, air bag catheter 3, ventilation catheter 4, and nasal catheter 5 are all mounted on the nasal plug 6. The air bag 2 is installed on the esophageal tube 1. One end of the air bag catheter 3 is connected to the air bag 2, and the other end of the air bag catheter 3 is connected to a first pressure sensor. A feeding hole 11 is opened on the side wall of one end of the esophageal tube 1. An air hole 12 is opened on the esophageal tube 1 near the end of the air bag 2. One end of the ventilation catheter 4 is connected to the air hole 12 through the inside of the esophageal tube 1, and the other end of the ventilation catheter 4 is located outside the esophageal tube 1. A second pressure sensor is connected to one end of the nasal catheter 5. The other ends of the ventilation catheter 4, the esophageal tube 1, the air bag catheter 3, and the nasal catheter 5 are all located on the same side of the nasal plug 6.

[0030] One end of the esophageal tube 1 is located outside the body, and the other end is inserted into the esophagus.

[0031] One end of the nasal cannula 5 is located outside the body, and the other end is inserted into the nasal cavity.

[0032] The other ends of the ventilation tube 4, the esophageal tube 1, the cuff tube 3, and one end of the nasal tube 5 are all located on the same side of the nasal plug 6. The other ends of the ventilation tube 4, the esophageal tube 1, the cuff tube 3, and one end of the nasal tube 5 can all be connected to connectors, which can be used to connect pressure sensors or external ventilation devices.

[0033] One end of the ventilation tube 4 can be inserted from one end of the esophageal tube 1 and arranged along the length of the esophageal tube 1, eventually communicating with the air hole 12; or one end of the ventilation tube 4 can be directly inserted into the esophageal tube 1 from a position near the air sac 2 and communicate with the air hole 12.

[0034] One end of nasal cannula 5

[0035] During the procedure, the nasal catheter 5 and the esophageal catheter 1 are first passed through the nasal plug 6, and then the esophageal catheter 1 is inserted through the nose. The actual length of the nasal catheter 5 and the esophageal catheter 1 after passing through the nasal plug 6 is determined by medical staff to ensure normal monitoring of esophageal pressure and intranasal pressure.

[0036] Place the nasal plug 6 into one nostril, then inflate the airbag 2 through the airbag tube 3. After inflation, connect the other end of the airbag tube 3 to the first pressure sensor.

[0037] Then, air is inflated through the ventilation tube 4 and the air vent 12, allowing gas to enter the space where the esophageal tube 1 is located through the air vent 12. The location of the airbag 2 is determined by the pressure value detected by the first pressure sensor. If the airbag 2 is located in a relatively large space (such as the stomach), injecting a small amount of air through the air vent 12 will not significantly increase the surrounding pressure. If the airbag 2 is located in a narrow space (such as the esophagus), injecting the same amount of air will significantly increase the pressure around the airbag 2. This method can determine the location of the airbag 2 and whether it should be placed in the esophagus. The esophageal pressure is obtained through the first pressure sensor connected to the airbag 2.

[0038] One end of the nasal cannula 5 is connected to the second pressure sensor, while the nasal plug 6 blocks one nostril, so that the nostril is in a relatively closed state. At this time, the pressure inside the nasal cavity can be known through the second pressure sensor.

[0039] Furthermore, by using a single device, the actual data of esophageal pressure and intranasal pressure can be obtained simultaneously, effectively simplifying the operation for researchers and shortening the operation time.

[0040] Food or nutrient solution can also be injected through the esophageal tube 1 and flow out through the feeding hole 11 along the esophageal tube 1, so as to ensure feeding and nutrient solution infusion for patients who do not participate in independent eating. This can avoid the pain caused by frequent tube removal and replacement, and also reduce the workload of medical staff.

[0041] The specific model and specifications of each pressure sensor need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail here. Its power supply and its principle are clear to those skilled in the art, so they will not be described in detail here. Its connection and installation and signal transmission principles are well known in this field.

[0042] The nasal plug 6 has a first through hole 61 and a second through hole 62 inside. The nasal catheter 5 is inserted into the first through hole 61, and the esophageal catheter 1, the ventilation catheter 4, and the cuff catheter 3 are inserted into the second through hole 62. In this design, the esophageal catheter 1, the ventilation catheter 4, and the cuff catheter 3 form a catheter group, and the first through hole 61 and the second through hole 62 are respectively used for the passage of the nasal catheter 5 and the catheter group.

[0043] The nasal plug 6 has a tapered structure along its length, and the small-diameter end of the nasal plug 6 is arc-shaped. With this design, the large-diameter end of the nasal plug 6 is preferably a planar structure.

[0044] The large-diameter end of the nasal plug 6 is machined with a raised edge 63 along its circumference. This design results in a rounded transition at the connection between the raised edge 63 and the large-diameter end of the nasal plug 6. The raised edge 63 further improves the sealing performance of the nostrils. It engages outside the nostrils, providing a secondary seal, achieving both internal and external sealing, thus enhancing the secondary sealing effect and further ensuring the accuracy of monitoring values.

[0045] The airbag 2 is made of thin-walled polyethylene, and the esophageal tube 1 and nasal tube 5 are both made of polyurethane or polyethylene.

[0046] The nasal plug 6 is made of an elastic material. This design allows the nasal plug 6 to be made of any one of latex, silicone, or rubber. Because the nasal plug 6 is made of an elastic material, it can adapt to different patients' nostril diameters, and when compressed, it helps to maintain a relatively sealed state in the nostril, thus ensuring the accuracy of airway pressure monitoring values.

[0047] The ventilation tube 4 is placed inside the esophageal tube 1. This design places the ventilation tube 4, except for its other end, inside the esophageal tube 1, making the overall external structure of the pressure measuring device simpler and easier to insert.

[0048] One end of the esophageal duct 1 is closed.

[0049] The airbag 2 is attached to the esophageal tube 1.

[0050] There are multiple feeding holes 11.

[0051] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A pressure measuring device integrating nasal cavity pressure and esophageal pressure measurement, characterized in that: The device includes an esophageal tube (1), an air bag (2), an air bag catheter (3), a ventilation catheter (4), a nasal catheter (5), and a nasal plug (6). The esophageal tube (1), air bag catheter (3), ventilation catheter (4), and nasal catheter (5) are all mounted on the nasal plug (6). The air bag (2) is mounted on the esophageal tube (1). One end of the air bag catheter (3) is connected to the air bag (2), and the other end of the air bag catheter (3) is connected to a first pressure sensor. A feeding hole is provided on the side wall of one end of the esophageal tube (1). (11) An air hole (12) is provided on the esophageal tube (1) near one end of the airbag (2). One end of the ventilation tube (4) is connected to the air hole (12) through the inside of the esophageal tube (1). The other end of the ventilation tube (4) is located outside the esophageal tube (1). One end of the nasal tube (5) is connected to a second pressure sensor. The other end of the ventilation tube (4), the other end of the esophageal tube (1), the other end of the airbag tube (3) and the one end of the nasal tube (5) are all located on the same side of the nasal plug (6).

2. The pressure measuring device integrating nasal cavity pressure and esophageal pressure measurement according to claim 1, characterized in that: The nasal plug (6) has a first through hole (61) and a second through hole (62) inside. The nasal tube (5) is inserted into the first through hole (61), and the esophageal tube (1), the ventilation tube (4) and the balloon tube (3) are inserted into the second through hole (62).

3. A pressure measuring device integrating nasal intracavitary pressure and esophageal pressure measurement according to claim 1 or 2, characterized in that: The nasal plug (6) has a tapered structure along its length, and the small diameter end of the nasal plug (6) is arc-shaped.

4. The pressure measuring device integrating nasal cavity pressure and esophageal pressure measurement according to claim 3, characterized in that: The large-diameter end of the nasal plug (6) is machined with a raised edge (63) along its circumference.

5. The pressure measuring device integrating nasal intracavitary pressure and esophageal pressure measurement according to claim 1, characterized in that: The airbag (2) is made of thin-walled polyethylene, and the esophageal tube (1) and nasal tube (5) are made of polyurethane or polyethylene.

6. The pressure measuring device integrating nasal cavity pressure and esophageal pressure measurement according to claim 1, characterized in that: The nasal plug (6) is made of elastic material.

7. The pressure measuring device integrating nasal cavity pressure and esophageal pressure measurement according to claim 1, characterized in that: The ventilation tube (4) is placed inside the esophageal tube (1).

8. The pressure measuring device integrating nasal cavity pressure and esophageal pressure measurement according to claim 1, characterized in that: One end of the esophageal duct (1) is closed.

9. A pressure measuring device integrating nasal cavity pressure and esophageal pressure measurement according to claim 1, characterized in that: The airbag (2) is fitted onto the esophageal tube (1).

10. A pressure measuring device integrating nasal cavity pressure and esophageal pressure measurement according to claim 1, characterized in that: There are multiple feeding holes (11).

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