Improved nasopharynx ventilation device

Abstract

The utility model discloses an improved nasopharynx ventilation device which comprises a clamping head, an oxygen inhalation tube, an expiration tube and a pressing inflation pump, an annular air bag is arranged at the tail end of the oxygen inhalation tube, an inflation tube is embedded in the side wall of the oxygen inhalation tube, one end of the inflation tube is communicated with the annular air bag, and the other end of the inflation tube extends out of one side of the front end of the oxygen inhalation tube and is detachably connected with the pressing inflation pump. Annular bosses are arranged on the two sides of the clamping head, elastic pieces are arranged at one ends of the annular bosses, sleeves are further connected to the annular bosses in a threaded mode, one end of the oxygen inhalation tube and one end of the expiration tube slidably penetrate through the annular bosses, and the elastic pieces can extrude the oxygen inhalation tube or the expiration tube by rotating the sleeves. By rotating the adjusting sleeve, the clamping head can slide on the oxygen inhalation tube or the expiration tube, then the distance between the annular air bag and the clamping head or the insertion depth of the expiration tube is adjusted, and when an indwelling stomach tube is placed in a patient, the expiration tube can be detached to avoid interference conflict with an original indwelling stomach tube of the patient. And the applicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an improved nasopharyngeal ventilation device. Background Art

[0002] Gastroscopy is a medical examination method that can directly observe the actual condition of the examined area. It can also perform pathological biopsy and cytological examination on suspicious lesions to further clarify the diagnosis. It is the preferred examination method for upper gastrointestinal tract lesions.

[0003] It is inserted into the stomach with the help of a thin, soft tube, so that doctors can directly observe the lesions of the esophagus, stomach and duodenum, especially the tiny lesions. Gastroscopy usually uses a hose to drive the lens into the stomach. The process of inserting the hose into the stomach can easily cause nausea and vomiting in patients, affecting the progress of the examination. Therefore, painless gastroscopy has evolved, which uses anesthetics to make patients lose consciousness and then perform gastroscopy, which reduces the pain of patients, but also increases the risk.

[0004] Anesthetized or comatose patients may experience tongue posterior fall, which may cause pharyngeal stenosis or obstruction, resulting in poor ventilation or even inability to breathe. If not treated in time, it may be life-threatening. The nasopharyngeal airway is a simple and convenient supraglottic ventilation device commonly used in clinical practice. It is inserted into the pharyngeal cavity through the nasal cavity to support the soft tissue of the posterior pharyngeal wall, thereby relieving the patient's upper respiratory tract ventilation or obstruction and achieving the purpose of upper respiratory tract ventilation.

[0005] In the prior art, for example, the patent document with the authorization announcement number CN 218685616 U discloses a nasopharyngeal oxygen tube that can prevent the tongue from falling back and facilitates painless gastroscopy. The air bag ring on the outer wall of the end of the oxygen tube is inflated and then squeezed to squeeze the tongue, so that the tongue moves toward the oral cavity. The gastroscope tube can pass through the inflated air bag ring, thereby preventing the tongue from falling back and not hindering the insertion of the gastroscope tube.

[0006] However, the oxygen tube, expiratory tube and clamp in the above device are connected as one piece. Therefore, when the oxygen tube is inserted into the patient's nasopharyngeal cavity, the distance between the air bag ring and the clamp cannot be adjusted, which is inconvenient to adapt to different patients; and when the patient has an indwelling gastric tube, the expiratory tube connected as one piece with the clamp cannot be inserted into the patient's nasopharyngeal cavity, which is inconvenient to use. Utility Model Content

[0007] The utility model provides an improved nasopharyngeal ventilation device, and the technical problem to be solved is that the oxygen inhalation tube, the exhalation tube and the clamp are detachably connected, and the connection position can be easily adjusted, thereby changing the distance between the annular airbag and the clamp, thereby increasing the applicability of the device.

[0008] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0009] An improved nasopharyngeal ventilation device comprises a clamp, an oxygen inhalation tube, an expiratory tube and a press-inflatable air pump, wherein an annular air bag is arranged on the outer side wall of the rear end of the oxygen inhalation tube, an inflation tube is embedded in the side wall of the oxygen inhalation tube, one end of the inflation tube is connected with the annular air bag, and the other end extends out from one side of the front end of the oxygen inhalation tube and is detachably connected to the press-inflatable air pump, annular bosses are arranged on both sides of the clamp, an elastic sheet is arranged on the suspended end of the annular boss, and a sleeve is also threadedly connected to the annular boss, one end of the oxygen inhalation tube and the expiratory tube can slidably pass through the annular boss, and the elastic sheet is squeezed by the sleeve threadedly connected to the annular boss, so that the elastic sheet can be clamped and fixed on the oxygen inhalation tube or the expiratory tube.

[0010] Compared with the prior art, the utility model achieves at least the following beneficial effects: an improved nasopharyngeal ventilation device in the utility model, by rotating the sleeve threadedly connected to the annular boss, allows the clamp to slide on the oxygen tube or the expiratory tube, thereby adjusting the distance between the annular airbag and the clamp or the insertion depth of the expiratory tube; and when the patient has an indwelling gastric tube, the expiratory tube can be removed to avoid interference with the patient's original indwelling gastric tube, thereby increasing the applicability of the device so that it can be used on different patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 This is a structural diagram of an embodiment of the utility model;

[0013] Figure 2 An exploded view of an embodiment of the utility model;

[0014] Figure 3 This is a schematic diagram of an annular airbag after inflation in one embodiment of the utility model;

[0015] Figure 4 A cross-sectional view of a self-sealing joint in one embodiment of the utility model

[0016] Figure 5 It is a cross-sectional view of a sleeve in one embodiment of the utility model.

[0017] The numbers in the figure are: 1. clamp; 2. oxygen inhalation tube; 3. exhalation tube; 4. press-inflator pump; 11. annular boss; 12. elastic sheet; 13. sleeve; 14. arc groove; 21. annular airbag; 22. inflation tube; 23. self-sealing joint; 24. reinforcement wire; 25. scale line; 26. ventilator connector; 231. shell; 232. spring; 233. T-rod; 234. sealing plug; 261. connecting part. DETAILED DESCRIPTION

[0018] The present application will be described in detail below with reference to the exemplary embodiments in the accompanying drawings. However, it should be understood that the present application can be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. These embodiments are provided here to make the disclosure of the present application more complete and to fully convey the concept of the present application to those skilled in the art.

[0019] In the description of the present application, it should be understood that the terms "center", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present application.

[0020] like Figure 1-5 As shown, an improved nasopharyngeal ventilation device in the present application includes a clamp 1, an oxygen inhalation tube 2, an exhalation tube 3 and a compression inflation pump 4.

[0021] refer to Figure 1 and Figure 2 The clamp head 1 is used to install the oxygen inhalation tube 2 and the exhalation tube 3, and is clamped at the nostrils to facilitate the removal of the entire device. Furthermore, an annular boss 11 is provided on both sides of the clamp head 1, and an external thread is provided on the side wall of the annular boss 11. The free end of the annular boss 11 is provided with a plurality of elastic sheets 12 at intervals along the axial direction. After the oxygen inhalation tube 2 and the exhalation tube 3 pass through the annular boss 11, the elastic sheet 12 can be sleeved on the oxygen inhalation tube 2 or the exhalation tube 3.

[0022] A sleeve 13 is also threadedly connected to the annular boss 11. A through hole is provided in the annular boss 11 for the oxygen tube 2 and the exhalation tube 3 to pass through. The diameter of the through hole is slightly larger than the outer diameter of the oxygen tube 2 and the exhalation tube 3, so as to facilitate the installation of the oxygen tube 2 and the exhalation tube 3 on the clamp 1.

[0023] Optionally, an arc groove 14 is provided in the middle of the clamp head 1, and the shape of the arc groove matches the shape of the philtrum of the human body. When the clamp head 1 is clamped at the patient's nostrils, the arc groove 14 provided in the middle of the clamp head 1 can be clamped at the patient's philtrum and nostrils, thereby reducing the movement of the device to the sides or shaking.

[0024] refer to Figure 1 and Figure 5 The oxygen tube 2 is detachably connected to the clamp 1. Annular bosses 11 are provided on both sides of the clamp 1, and an elastic sheet 12 is provided on the suspended end of the annular boss 11. A sleeve 13 is also threadedly connected to the annular boss 11, and the inner cavity of the sleeve 13 is conical. One end of the oxygen tube 2 can slide through the annular boss 11 on one side, and by tightening the sleeve 13 threadedly connected to the annular boss 11, the inner cavity squeezes the elastic sheet 12 after it moves, so that the elastic sheet 12 can be clamped and fixed on the oxygen tube 2, thereby fixing the oxygen tube 2.

[0025] An annular airbag 21 is arranged on the outer side wall of the rear end of the oxygen inhalation tube 2, and an inflation tube 22 is embedded in the side wall of the oxygen inhalation tube 2. One end of the inflation tube 22 is connected with the annular airbag 21, and the other end extends from one side of the front end of the oxygen inhalation tube 2 and is detachably connected to a pressing inflation pump 4. The annular airbag 21 can be inflated by pressing the inflation pump 4, so that it can squeeze the tongue after inflation, so that the tongue moves toward the oral cavity to avoid tongue posterior fall.

[0026] Furthermore, the annular airbag 21 is in a ring shape after being fully inflated, and the inner diameter of the ring is larger than the outer diameter of the gastroscope tube. By having the annular airbag 21 in a ring shape after being inflated and the inner diameter of the ring being larger than the outer diameter of the gastroscope tube, it can avoid hindering the gastroscope tube from being inserted into the patient's body, while also ensuring that the gastroscope tube can easily pass through the annular airbag 21.

[0027] When in use, it is usually used in conjunction with a gastroscope or other endoscope, and the oxygen tube 2 is inserted into the nasal cavity from the nasal vestibule, and the tail end of the oxygen tube 2 is lowered to a position between the mandible and the epiglottis; however, the distance from the nasal vestibule to the mandible and epiglottis is different for different patients. Therefore, according to the actual situation of the patient, the sleeve 13 threadedly connected to the annular boss 11 can be rotated to allow the clamp 1 to slide on the oxygen tube 2, and then the distance between the annular airbag 21 and the clamp 1 can be adjusted, thereby increasing the applicability of the device so that it can be used on different patients.

[0028] refer to Figure 1 and Figure 4A self-sealing joint 23 is provided at the connecting end of the inflation tube 22 and the push-inflator 4. The inflation tube 22 can be connected to the push-inflator 4 when inflation is needed through the self-sealing joint 23, and can be disassembled from the push-inflator 4 after inflation is completed. In addition, the self-sealing joint 23 can prevent air leakage in the annular airbag 21, so that the annular airbag 21 can remain inflated, and there is no need to manually block the inflation tube 22.

[0029] Among them, the self-sealing joint 23 includes a shell 231, a spring 232, a T-shaped rod 233 and a sealing plug 234. The shell 231 is threadedly connected to the push-to-air pump 4. One end of the T-shaped rod 233 extends out of the shell 231 and is fixedly connected to the sealing plug 234. The spring 232 is located in the shell 231, and its two ends are respectively abutted against the T-shaped rod 233 and the shell 231. Under the action of the spring 232, the sealing plug 234 can close one end of the shell 231.

[0030] When the annular airbag 21 is inflated, the pressing air pump 4 is connected to the inflation tube 22 through the self-sealing joint 23. The pressing air pump 4 is provided with an ejector pin, which can push the T-shaped rod 233 open, and further compress the spring 232, so that the sealing plug 234 is separated from the housing 231, so that the housing 231 is sealed at one end. At this time, the annular airbag 21 can be inflated by pressing the air pump 4. After the inflation is completed, the pressing air pump 4 is disassembled, the T-shaped rod 233 loses the restriction of the ejector pin, and the sealing plug 234 can be closely attached to one end of the housing 231 under the action of the spring 232, and then the housing 231 is sealed to prevent the gas in the annular airbag 21 from leaking, without the need to artificially block the inflation tube 22, and the use is more convenient, and the gas leakage in the annular airbag 21 during artificial blocking is also reduced, resulting in the shrinkage of the annular airbag 21.

[0031] Furthermore, the oxygen inhalation tube 2 is made of a transparent material, and a scale line 25 is provided on the inner wall of the oxygen inhalation tube 2. The scale line 25 can facilitate medical staff to observe and record the insertion depth of the oxygen inhalation tube 2, and the scale line 25 is provided on the inner wall of the oxygen inhalation tube 2 to ensure the smoothness of the outer wall of the oxygen inhalation tube 2, and to prevent the raised or sunken scale line 25 from causing damage to the patient's tissue when the oxygen inhalation tube 2 is inserted into the patient's nasopharyngeal cavity.

[0032] refer to Figure 3 Furthermore, a reinforcing wire 24 is embedded in the side wall of the oxygen tube 2. The side wall of the oxygen tube 2 is reinforced by the reinforcing wire 24 to increase the anti-flattening property of the oxygen tube 2, so that the inner cavity channel of the oxygen tube 2 is not easily deformed during and after insertion, which can effectively ensure smooth breathing.

[0033] Furthermore, the tail end of the oxygen inhalation tube 2 is an inclined opening, and the inclined end faces are all passivated surfaces. The tail end of the oxygen inhalation tube 2 is an inclined opening, which can increase the size of the ventilation surface and reduce the situation where the opening is completely blocked by the tissue in the nasopharyngeal cavity, resulting in poor ventilation effect. Moreover, the end faces are all passivated, which can also prevent the oxygen inhalation tube 2 from causing damage to the patient's cavity tissue when it is inserted into the patient's nasopharyngeal cavity. Optionally, a side hole is opened on the side wall of the tail end of the oxygen inhalation tube 2, and the side hole can continue to play a ventilation role when the tail end opening is completely blocked by the tissue in the nasopharyngeal cavity, preventing the device from failing.

[0034] Furthermore, a ventilator connector 26 is provided at the front end of the oxygen inhalation tube 2, and a connecting portion 261 is provided at one end of the ventilator connector 26. The oxygen inhalation tube 2 can be interference fit on the connecting portion 261, and the device can be easily connected to the ventilator through the ventilator connector 26.

[0035] refer to Figure 1 and Figure 2 , the expiratory tube 3 is detachably connected to the clamp 1. Among them, an annular boss 11 is provided on both sides of the clamp 1, and an elastic sheet 12 is provided on the suspended end of the annular boss 11, and a sleeve 13 is also threadedly connected to the annular boss 11, and the inner cavity of the sleeve 13 is conical. One end of the expiratory tube 3 can slide through the annular boss 11 on the other side, and by tightening the sleeve 13 threadedly connected to the annular boss 11, the inner cavity squeezes the elastic sheet 12 after it moves, so that the elastic sheet 12 can be clamped and fixed on the expiratory tube 3, thereby fixing the expiratory tube 3. Optionally, the length of the expiratory tube 3 is shorter than the length of the oxygen inhalation tube 2.

[0036] By rotating the sleeve 13 threadedly connected to the annular boss 11, the clamp 1 can slide on the expiratory tube 3, and then the insertion depth of the expiratory tube 3 can be adjusted according to the patient's comfort. When the patient has an indwelling gastric tube, the expiratory tube 3 can be removed to avoid interference with the patient's original indwelling gastric tube.

[0037] Furthermore, a filter net is provided in the inner cavity of the exhalation tube 3 , and the filter net provided in the exhalation tube 3 can filter out bacteria in the patient's exhaled gas, thereby reducing the possibility of infection caused by the exhaled bacteria.

[0038] It should be understood that all the above embodiments are illustrative rather than restrictive, and various modifications or variations made by those skilled in the art to the specific embodiments described above under the concept of the present utility model should be within the protection scope of the present utility model.

Claims

1. An improved nasopharyngeal ventilation device, comprising a clamp (1), an oxygen inhalation tube (2), an exhalation tube (3) and a push-inflator (4), wherein an annular air bag (21) is arranged on the outer wall of the tail end of the oxygen inhalation tube (2), and an inflation tube (22) is embedded in the side wall of the oxygen inhalation tube (2), one end of the inflation tube (22) is connected to the annular air bag (21), and the other end extends from one side of the front end of the oxygen inhalation tube (2) and is detachably connected to the push-inflator (4), characterized in that: An annular boss (11) is provided on both sides of the clamp head (1), an elastic sheet (12) is provided on the suspended end of the annular boss (11), and a sleeve (13) is also threadedly connected to the annular boss (11); one end of the oxygen inhalation tube (2) and the exhalation tube (3) can slidably pass through the annular boss (11), and the elastic sheet (12) is squeezed by the sleeve (13) threadedly connected to the annular boss (11), so that the elastic sheet (12) can be clamped and fixed on the oxygen inhalation tube (2) or the exhalation tube (3).

2. The improved nasopharyngeal ventilation device according to claim 1, characterized in that: A self-sealing joint (23) is provided at the connection end between the inflation tube (22) and the push inflation pump (4). The self-sealing joint (23) comprises a shell (231), a spring (232), a T-shaped rod (233) and a sealing plug (234). The shell (231) is threadedly connected to the push inflation pump (4). One end of the T-shaped rod (233) extends out of the shell (231) and is fixedly connected to the sealing plug (234). The spring (232) is located in the shell (231) and its two ends are respectively in contact with the T-shaped rod (233) and the shell (231). Under the action of the spring (232), the sealing plug (234) can seal one end of the shell (231).

3. The improved nasopharyngeal ventilation device according to claim 1, characterized in that: A reinforcing wire (24) is embedded in the side wall of the oxygen absorption tube (2).

4. The improved nasopharyngeal ventilation device according to claim 1, characterized in that: The oxygen absorption tube (2) is made of a transparent material, and a scale mark (25) is provided on the inner side wall of the oxygen absorption tube (2).

5. The improved nasopharyngeal ventilation device according to claim 1, characterized in that: The tail end of the oxygen absorption tube (2) is an inclined opening, and the inclined end faces are all passivated surfaces.

6. The improved nasopharyngeal ventilation device according to claim 1, characterized in that: The front end of the oxygen inhalation tube (2) is provided with a ventilator connector (26), one end of the ventilator connector (26) is provided with a connecting portion (261), and the oxygen inhalation tube (2) can be interference-fitted on the connecting portion (261).

7. The improved nasopharyngeal ventilation device according to claim 1, characterized in that: The annular airbag (21) is in a ring shape when fully inflated, and the inner diameter of the ring is greater than the outer diameter of the gastroscope tube.

8. The improved nasopharyngeal ventilation device according to claim 1, characterized in that: An arc-shaped groove (14) is provided in the middle of the clamp (1).

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