Expiratory flow velocity accelerator with adjustable inhalation flow velocity

Abstract

An opening is formed in the side wall of the front section of a reducing part of a Venturi tube, an air suction tube externally connected with an oxygen source is introduced into the opening, an air suction tube body is located in the Venturi tube, and an air suction tube outlet extends to the position of a patient interface; a valve block matched with the pipe diameter is arranged in the air suction pipe, the valve block is fixedly connected with a shaft rod of the adjusting rotating wheel, the valve block can be driven to rotate in the air suction pipe by rotating the adjusting rotating wheel, and therefore the opening degree of an air inlet channel of the air suction pipe is adjusted. According to the utility model, constant bias flow towards the interior of the lung is added in the whole breathing process, and meanwhile, the bias flow can be used for adjusting the flow, so that the oxygen saturation of a patient in the exercising process is in a stable state; in addition, the phenomena of alveolar collapse or pulmonary atelectasis aggravation caused by overlarge shearing force at the end of expiration of the patient can be reduced as much as possible.

Description

Technical Field

[0001] The utility model relates to an exhalation flow rate accelerometer, belonging to the technical field of exhalation flow rate accelerometers. Background Art

[0002] An expiratory flow accelerometer is a medical device that generally utilizes the Venturi effect to allow the exhaled air flow to pass through a narrow channel, thereby increasing the shear force and increasing the exhaled flow rate, thereby facilitating the discharge of airway secretions (sputum).

[0003] During use, the degree of effort is determined mainly by the patient's own efforts and physical condition, which requires a certain amount of physical strength. However, the patient needs to inhale before exhaling, and the expiratory flow accelerometer needs to be moved away from the mouth when inhaling, and inhaling also requires a certain amount of physical strength. In addition, some patients may have excessive efforts, which may cause excessive increase in shear force, resulting in alveolar collapse or aggravation of atelectasis at the end of exhalation. Summary of the invention

[0004] The utility model aims to provide an expiratory flow accelerometer with adjustable inhalation flow rate. An inhalation airflow is arranged at the patient interface of the expiratory flow accelerometer, so that the patient can inhale by slightly moving the patient interface of the expiratory flow accelerometer away. Moreover, due to the existence of the inhalation pure oxygen airflow, it can make inhalation easier. At the same time, due to the existence of the reverse airflow, it can also prevent the patient from increasing the shear force too much due to excessive effort to a certain extent, causing the collapse of the alveoli or aggravating the problem of atelectasis at the end of exhalation.

[0005] The utility model specifically adopts the following technical solutions:

[0006] An expiratory flow rate accelerometer with adjustable inhalation flow rate comprises a venturi tube 6 as the main body of the expiratory flow rate accelerometer, the venturi tube 6 having a reduced diameter portion, comprising an inhalation pipe, an adjusting wheel 5 and a valve plate 7; an opening is provided on the side wall of the front section of the reduced diameter portion of the venturi tube 6 and an external oxygen source is introduced into the inhalation pipe, the inhalation pipe body is located inside the venturi tube 6, and the inhalation pipe outlet 2 extends to the patient interface 1; a valve plate 7 matching the pipe diameter is provided inside the inhalation pipe, the valve plate 7 is fixedly connected to the shaft of the adjusting wheel 5, and rotating the adjusting wheel 5 can drive the valve plate to rotate inside the inhalation pipe, thereby adjusting the opening of the inhalation pipe air inlet passage.

[0007] Preferably, the air intake pipe has a main body and a bent portion, the main body is attached and fixed along the wall of the Venturi tube 6, and the bent portion extends from the wall of the Venturi tube 6 to form an air intake interface 4 that can be connected to oxygen.

[0008] Furthermore, the valve plate 7 is arranged in the bending portion.

[0009] Preferably, it further comprises a gripping handle 3 , which is fixed at the lower part of the front section of the venturi tube 6 .

[0010] Furthermore, a positioning hole for the shaft of the adjusting wheel 5 is also provided on the holding handle 3 , so that the adjusting wheel 5 is fixed on the holding handle 3 through the positioning hole.

[0011] Furthermore, the handle 3 is vertically connected to the venturi tube 6 .

[0012] Preferably, the valve plate 7 is circular and has a diameter smaller than the inner diameter of the air intake pipe.

[0013] The beneficial effects of the utility model are: the expiratory flow rate accelerometer is improved, an inhalation tube is added, and oxygen inhalation is provided to the patient interface, which is equivalent to adding a continuous bias flow toward the lungs during the entire breathing process. At the same time, the bias flow can adjust the flow rate. On the one hand, it can help increase the patient's inhalation volume, and on the other hand, it can connect external oxygen to ensure that the patient's oxygen saturation is in a stable state during exercise. In addition, it can also minimize the patient's alveolar collapse or aggravation of atelectasis caused by excessive shear force at the end of exhalation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a structural schematic diagram of an exhalation flow rate accelerometer with adjustable inhalation flow rate.

[0015] Figure 2 The schematic diagram is a diagram of adjusting the oxygen intake opening by rotating the regulating wheel to drive the valve plate to rotate. (a), (b) and (c) in the figure are schematic diagrams of three different regulating states.

[0016] In the figure, 1. patient interface, 2. inhalation tube outlet, 3. holding handle, 4. inhalation airflow interface, 5. adjustment wheel, 6. venturi tube, 7. valve plate. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] See also Figure 1-2, an exhalation flow rate accelerometer with adjustable inhalation flow rate, including a venturi tube 6 as the main body of the exhalation flow rate accelerometer, the venturi tube 6 having a reduced diameter portion, including an inhalation pipe, an adjusting wheel 5 and a valve plate 7; an opening is made on the side wall of the front section of the reduced diameter portion of the venturi tube 6 and an external oxygen source is introduced into the inhalation pipe, the inhalation pipe body is located inside the venturi tube 6, and the outlet 2 of the inhalation pipe extends to the patient interface 1; a valve plate 7 matching the pipe diameter is provided inside the inhalation pipe, the valve plate 7 is fixedly connected to the shaft of the adjusting wheel 5, and rotating the adjusting wheel 5 can drive the valve plate to rotate inside the inhalation pipe, thereby adjusting the opening of the air inlet passage of the inhalation pipe. The valve plate 7 is circular and has a diameter smaller than the inner diameter of the inhalation pipe.

[0019] The main change made in this solution is that an air intake pipe is added inside the existing Venturi tube 6 which serves as the main body of the exhalation flow rate accelerometer, and the flow rate of the air intake pipe can be adjusted by adjusting the valve plate 7 by the regulating wheel 5.

[0020] In this embodiment, as a preferred embodiment, see Figure 1 The inhalation pipe has a main body and a bent portion. The main body is attached and fixed along the wall of the Venturi tube 6, and the bent portion extends from the wall of the Venturi tube 6 to form an inhalation airflow interface 4 that can be connected to oxygen.

[0021] In this embodiment, the valve plate 7 is arranged in the bending portion, which is not specifically shown in the drawings.

[0022] In this embodiment, see Figure 1 , further comprising a gripping handle 3, wherein the gripping handle 3 is fixed to the lower portion of the front section of the venturi tube 6. The handle 3 is vertically connected to the venturi tube 6.

[0023] Furthermore, a positioning hole for the shaft of the adjusting wheel 5 is also provided on the holding handle 3 , so that the adjusting wheel 5 is fixed on the holding handle 3 through the positioning hole.

[0024] Attached Figure 1 Description of each component:

[0025] Patient interface 1: The patient inhales and exhales through this interface.

[0026] Inspiratory airflow outlet 2: leads to the patient end, provides inspiratory airflow to the patient, and the size of the airflow is adjusted by turning gear ⑤.

[0027] Grip handle 3: used for holding.

[0028] The inhalation airflow interface 4 can be connected to external oxygen.

[0029] Adjusting wheel 5: Rotate to adjust the size of the inhalation airflow.

[0030] Venturi tube 6: As the main body of the exhalation flow rate accelerometer, this component itself is the same as the prior art, and the basic principle of the Venturi tube will not be described in detail here.

[0031] Valve plate 7: When the regulating wheel rotates, the valve plate turns over, and the size of the inhalation airflow is adjusted by changing the size of the area covered by the inhalation pipe. Figure 2 Figure (a) shows that the valve disc rotates to a position that coincides with the suction pipe cross section, at which time the flow rate is minimum; Figure (b) shows that the valve disc rotates to a position that is perpendicular to the suction pipe cross section, at which time the flow rate is maximum; Figure (c) shows that the valve disc rotates to a position that is at an inclined angle with the suction pipe cross section, at which time the flow rate is moderate.

[0032] In order to prevent patients from experiencing unstable oxygen saturation and alveolar collapse or aggravated atelectasis due to excessive exertion when undergoing airway clearing exercises, the utility model adds a continuous airflow interface toward the lungs. This continuous airflow can also help increase lung volume and enhance the effect of exercising coughing ability.

[0033] The utility model adds a continuous and adjustable bias flow toward the lungs during the entire breathing process, which can help increase the patient's inspiratory volume on the one hand, and can connect external oxygen on the other hand to ensure that the patient's oxygen saturation is in a stable state during exercise. In addition, it can minimize the patient's alveolar collapse or aggravation of atelectasis caused by excessive shear force at the end of exhalation.

[0034] During use, the patient holds the handle to stabilize the main part of the instrument. Inhale and exhale through the interface, and turn the gear to adjust the size of the continuous airflow, which is determined by the patient's tolerance. When exhaling, the airflow passes through the narrow part of the cavity, which will cause a large shear force in the patient's lungs, thereby accelerating the discharge of secretions in the patient's lungs and airways, improving the patient's secretion management, and improving the airway clearance function.

[0035] The above are preferred embodiments of the present invention. Ordinary technicians in this field can also make various changes or improvements on this basis. Without departing from the overall concept of the present invention, these changes or improvements should fall within the scope of protection required by the present invention.

Claims

1. An exhalation flow rate accelerometer with adjustable inhalation flow rate, comprising a venturi tube (6) as the main body of the exhalation flow rate accelerometer, the venturi tube (6) having a reduced diameter portion, characterized in that: It comprises an air intake pipe, an adjusting wheel (5) and a valve plate (7); An opening is formed on the side wall of the front section of the reduced diameter portion of the venturi tube (6) and an inhalation tube connected to an external oxygen source is introduced therein, the inhalation tube body is located inside the venturi tube (6), and the inhalation tube outlet (2) extends to the position of the patient interface (1); A valve plate (7) matching the pipe diameter is provided inside the intake pipe, and the valve plate (7) is fixedly connected to the shaft of the adjusting wheel (5). Rotating the adjusting wheel (5) can drive the valve plate to rotate inside the intake pipe, thereby adjusting the opening of the intake passage of the intake pipe.

2. The expiratory flow rate accelerometer with adjustable inhalation flow rate as claimed in claim 1, characterized in that: The air intake pipe comprises a main body and a bent portion, wherein the main body is attached and fixed along the wall of the Venturi tube (6), and the bent portion extends from the wall of the Venturi tube (6) to form an air intake airflow interface (4) capable of externally connecting to oxygen.

3. The expiratory flow rate accelerometer with adjustable inhalation flow rate as claimed in claim 2, characterized in that: The valve plate (7) is arranged in the bent portion.

4. The expiratory flow rate accelerometer with adjustable inhalation flow rate as claimed in claim 1, characterized in that: It also comprises a gripping handle (3), wherein the gripping handle (3) is fixed to the lower part of the front section of the venturi tube (6).

5. The expiratory flow rate accelerometer with adjustable inhalation flow rate as claimed in claim 4, characterized in that: The gripping handle (3) is also provided with a positioning hole for the shaft of the adjusting wheel (5), so that the adjusting wheel (5) is fixed on the gripping handle (3) through the positioning hole.

6. The expiratory flow rate accelerometer with adjustable inhalation flow rate as claimed in claim 5, characterized in that: The handle (3) is vertically connected to the Venturi tube (6).

7. The expiratory flow rate accelerometer with adjustable inhalation flow rate as claimed in claim 1, characterized in that: The valve plate (7) is circular and has a diameter smaller than the inner diameter of the air intake pipe.

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