Oxygen supply and drug delivery device for acute and critical diseases

Abstract

The invention discloses an oxygen supply and drug delivery device for acute and critical diseases, and belongs to the technical field of medical instruments. The device comprises a breathing mask, a dosing cavity is formed in the middle of the surface of the front end of the breathing mask, a linkage shaft is coaxially installed in the dosing cavity, the front end and the rear end of the linkage shaft are matched with the dosing cavity through sealing bearings to form an independent cavity, a centrifugal fan and a turbine fan are coaxially installed on the linkage shaft, and the cavity where the turbine fan is located is communicated with the interior of the breathing mask. An air inlet is formed in the front end face of the dosing cavity, an expiration opening is formed in the breathing mask and communicated with a cavity, where the centrifugal fan is located, in the dosing cavity, and the front end of the linkage shaft penetrates through the sealing bearing and the dosing cavity and is detachably provided with a driving motor. Gas exhaled by a patient is used for driving the centrifugal fan to drive the turbine fan to rotate, synchronous oxygen supply and drug administration without power dependence are achieved, and meanwhile drugs and oxygen are mixed; when the patient breathes weakly, the driving motor is utilized to actively drive the linkage shaft to rotate to assist in air supply and exhaust gas discharge.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to an oxygen supply and delivery device for acute and critical illnesses. Background Technology

[0002] In the treatment of acute and critical illnesses, the simultaneous delivery of oxygen and nebulized medication is crucial for maintaining vital signs. Current technologies mainly rely on electric nebulizers or independent oxygen supply devices. Existing equipment has several shortcomings: it lacks a combined supply system for both; traditional devices require continuous electric power to drive the fan, making them unreliable in field emergency situations or during power outages; and it has poor respiratory adaptability, failing to provide a supply effect that complements the patient's spontaneous breathing. Summary of the Invention

[0003] To address the problems mentioned above, this invention proposes an oxygen supply and drug delivery device for acute and critical illnesses, which can achieve an oxygen supply and drug delivery driving mechanism without power dependence, while mixing oxygen with drugs, and can be adapted to active auxiliary gas supply for patients with weak spontaneous breathing.

[0004] To achieve the above-mentioned technical objectives, the present invention is implemented through the following technical solution: an oxygen supply and drug delivery device for acute and critical illness, comprising a breathing mask, wherein a one-way inhalation port and an exhalation tube are provided on the breathing mask corresponding to the patient's mouth and nose, and the inhalation port and the exhalation tube are connected through a drug delivery chamber; an oxygen tube and a drug tube are respectively connected to the drug delivery chamber through an air inlet; a linkage shaft is installed in the drug delivery chamber, and a centrifugal fan and a turbine fan are respectively installed on the linkage shaft, the centrifugal fan is set in the drug delivery chamber through a sealed bearing and corresponds to the exhalation tube, and the turbine fan is positioned horizontally inside the inhalation port; the exhaled gas can drive the centrifugal fan to rotate, thereby driving the turbine fan to rotate, and after the turbine fan rotates, it sends gas into the breathing mask in its chamber to form a negative pressure, thereby drawing in and mixing the oxygen and nebulized drugs in the oxygen tube and the drug tube, and further delivering them into the breathing mask for the patient;

[0005] A motor is also installed outside the drug delivery chamber, and the motor output shaft is connected to the linkage shaft through a coupling.

[0006] Furthermore, a filter screen is installed at the inhalation port, and tiny pores are formed on the surface of the filter screen to filter the inhaled atomized medicine.

[0007] A magnetic suction slot is provided on the outer side of the linkage shaft at the front end of the drug delivery chamber. The rear end of the drive motor is provided with an output shaft corresponding to the linkage shaft, and a magnetic connector corresponding to the magnetic suction slot is provided around the output shaft to facilitate the disassembly and assembly of the drive motor.

[0008] Furthermore, the left and right sides and the top of the breathing mask are respectively connected to fixing straps, and the free ends of the fixing straps are covered with Velcro, so that the breathing mask can be fixedly worn over the patient's mouth and nose.

[0009] The breathing mask has a hollow silicone ring installed on the edge that contacts the patient. This ring can adapt to the patient's facial contours and make a close contact after wearing, which can improve the sealing of the breathing mask after wearing and prevent drug leakage.

[0010] The outer surface of the connection between the outer end of the exhalation port and the exhalation tube has several small holes that connect to the exhalation port, which work together with the exhalation tube to expel air outwards, preventing the exhalation frequency from being too fast and causing the exhalation tube to not expel air in time.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] 1. The centrifugal fan is driven to rotate by the exhaled airflow, and the centrifugal fan drives the turbine fan to rotate synchronously through the linkage shaft. The rotation of the turbine fan generates negative pressure in the chamber connected to the breathing mask, which draws oxygen and nebulized drugs from the air inlet into the chamber. At the same time, the turbine fan mixes and delivers the mixture into the breathing mask to the patient, thus realizing the use of the patient's own exhaled energy to drive oxygen supply and drug delivery.

[0013] 2. When the patient's spontaneous breathing is weak, the drive motor can quickly connect with the magnetic slot at the front end of the linkage shaft via the magnetic connector at the front end of its output shaft, actively driving the linkage shaft to rotate, thereby driving the centrifugal fan and turbine fan to rotate synchronously; the turbine fan rotates to continuously deliver gas into the breathing mask to form positive pressure assisted ventilation, while the centrifugal fan rotates to accelerate the discharge of waste gas in the expiratory tube, realizing the function of actively assisting in oxygen supply, drug administration and waste gas discharge when there is no effective spontaneous breathing or breathing is weak.

[0014] 3. When the patient is breathing rapidly, part of the exhaled air is directly and quickly expelled through the exhalation port, while the other part enters the chamber where the centrifugal fan is located through the exhalation tube to drive the centrifugal fan, forming a shunting effect. The shunting effect reduces the instantaneous exhaust pressure of the exhalation tube and avoids the retention or backflow of waste gas due to excessively fast exhalation frequency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments are briefly introduced below.

[0016] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0017] Figure 2 This is a right view of Embodiment 1 of the present invention;

[0018] Figure 3 This is a front view of Embodiment 1 of the present invention;

[0019] Figure 4 This is a rear view of Embodiment 1 of the present invention;

[0020] Figure 5This is a structural diagram of the external portion of the drug delivery cavity in Embodiment 1 of the present invention;

[0021] Figure 6 This is a structural diagram of the internal structure of the drug delivery chamber in Embodiment 1 of the present invention;

[0022] Figure 7 This is a cross-sectional view of Embodiment 1 of the present invention.

[0023] The structural names represented by each number in the attached diagram are as follows:

[0024] 1-Respiratory mask, 101-Fixing strap, 102-Hollow silicone ring, 103-Exhalation port, 104-Exhalation tube, 105-Inhalation port, 2-Drug delivery chamber, 201-Air inlet, 202-Magnetic slot, 3-Drive motor, 301-Magnetic connector, 302-Output shaft, 4-Linkage shaft, 401-Centrifugal fan, 402-Sealed bearing, 403-Turbine fan, 5-Oxygen tube, 6-Drug tube. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0026] Example 1

[0027] See Figures 1 to 7 As shown in the figure, this embodiment provides a specific implementation of an oxygen delivery device for critically ill patients. The device mainly includes a breathing mask 1, a delivery chamber 2, and its internal linkage inhalation structure.

[0028] The breathing mask 1 has fastening straps 101 attached to its left and right sides and top, with Velcro covering the free ends of the straps 101. Hollow silicone rings 102 are installed on the edges of the breathing mask 1 that come into contact with the patient's facial skin, allowing it to fit closely to the facial contours of different patients.

[0029] The breathing mask 1 has a one-way inhalation port 105 and an exhalation tube 104 located at the patient's mouth and nose. The inhalation port 105 and the exhalation tube 104 are connected through a drug delivery chamber 2. The drug delivery chamber 2 has a linkage shaft 4 arranged in the front-to-back direction. The front and rear ends of the linkage shaft 4 are respectively connected to the drug delivery chamber 2 through sealed bearings 402, dividing the inside of the drug delivery chamber 2 into two independent chambers. A centrifugal fan 401 and a turbine fan 403 are coaxially mounted on the linkage shaft 4. The turbine fan 403 is horizontally positioned inside the inhalation port 105. When the turbine fan 403 rotates, it can push gas into the breathing mask 1 through the inhalation port 105.

[0030] The front end face of the drug delivery chamber 2 is symmetrically provided with air inlets 201 on the left and right sides. The air inlets 201 are connected to the chamber where the turbine fan 403 is located, and are used to connect the oxygen tube 5 and the drug tube 6 respectively. The oxygen tube 5 and the drug tube 6 are connected to the external oxygen source and the nebulized drug source. Each air inlet 201 is equipped with a one-way valve to ensure that the gas can only enter in one direction.

[0031] The exhalation tube 104 is also equipped with a one-way valve, allowing exhaled gas to exit only one direction from the breathing mask 1. The other end of the exhalation tube 104 is connected to the chamber of the centrifugal fan 401. The lower half of the exhalation tube 104 is vertically mounted on the drug delivery chamber 2 and perpendicular to the linkage shaft 4, enabling the exhaled gas to vertically impact the centrifugal fan 401, effectively converting the power of the exhaled gas into the power of the centrifugal fan 401's rotation. In addition, several small holes are formed on the outer peripheral surface of the exhalation port 103 at the connection point with the exhalation tube 104, directly connecting to the exhalation port 103, to assist in rapid exhaust.

[0032] The front end of the linkage shaft 4 extends outward through the front sealed bearing 402 and the front wall of the drug delivery chamber 2, and a magnetic suction slot 202 is provided on the outer side of the front end of the linkage shaft 4. The rear end of the drive motor 3 is provided with an output shaft 302, and a magnetic connector 301 that matches the magnetic suction slot 202 at the front end of the linkage shaft 4 is provided around the output shaft 302. Through the magnetic attraction between the magnetic suction slot 202 and the magnetic connector 301, the output shaft 302 of the drive motor 3 and the linkage shaft 4 can be quickly connected and disconnected.

[0033] The surface of the inhalation port 105 has tiny pores for the atomized drug molecules to pass through. Its main function is to filter the atomized drug inhaled by the patient and block any larger particles or impurities that may be present.

[0034] When the patient has effective spontaneous breathing: When the patient exhales, the exhaled air is discharged through the expiratory tube 104, and the airflow impacts and drives the centrifugal fan 401 to rotate, which in turn drives the turbine fan 403 to rotate synchronously. The rotation of the turbine fan 403 generates negative pressure in its chamber, and external oxygen and nebulized drugs are drawn into the turbine fan 403 chamber under the action of negative pressure. The rotation of the turbine fan 403 further mixes the inhaled gas (oxygen + nebulized drugs) and continuously pushes it into the breathing mask 1 through the inhalation port 105 for the patient to inhale.

[0035] When the patient's spontaneous breathing is weak or ineffective: the drive motor 3 is quickly connected and started via its magnetic connector 301 to the magnetic slot 202 at the front end of the linkage shaft 4. The drive motor 3 actively drives the linkage shaft 4 to rotate, thereby simultaneously driving the centrifugal fan 401 and the turbine fan 403 to rotate. The rotation of the turbine fan 403 actively delivers gas into the breathing mask 1 connected to it, forming positive pressure assisted ventilation and forcibly supplying oxygen and medication to the patient. At the same time, the rotation of the centrifugal fan 401 generates suction in the front chamber of the drug delivery chamber 2, accelerating the suction of waste gas from the breathing mask 1 through the exhalation tube 104 and promoting its expulsion. The use of the drive motor 3 actively assists in completing the key functions of oxygen supply, drug delivery, and waste gas expulsion when the patient cannot provide sufficient expiratory power.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. For those skilled in the art, various modifications and variations can be made to the above embodiments without departing from the principles of the present invention, and all such modifications and variations should fall within the scope of protection of the present invention.

Claims

1. An emergency and critical care oxygen delivery device, comprising a breathing mask (1), characterized in that: The breathing mask (1) is provided with a one-way inhalation port (105) and an exhalation tube (104) corresponding to the patient's mouth and nose. The inhalation port (105) and the exhalation tube (104) are connected through the drug delivery chamber (2). The drug delivery chamber (2) is connected to the oxygen tube (5) and the drug tube (6) through the air inlet (201). The drug delivery chamber (2) is equipped with a centrifugal fan (401) and a turbine fan (403) through a linkage shaft (4). The centrifugal fan (401) is set in the drug delivery chamber (2) through a sealed bearing (402) and corresponds to the exhalation tube (104). The turbine fan (403) is placed horizontally in the inhalation port (105). The exhaled airflow passes through the centrifugal fan (401) and causes the turbine fan (403) to rotate and generate negative pressure. The inhaled nebulized drug and oxygen are mixed and sent into the breathing mask (1) through the inhalation port (105). A motor is also provided outside the drug delivery chamber (2), and the motor output shaft (302) is connected to the linkage shaft (4) through a coupling.

2. The emergency and critical care oxygen supply and drug delivery device according to claim 1, characterized in that: The portion of the exhalation tube (104) connected to the drug delivery chamber (2) is perpendicular to the linkage shaft (4) where the centrifugal fan (401) is located.

3. The emergency and critical care oxygen supply and drug delivery device according to claim 1, characterized in that: A filter screen is installed at the inlet (105), and the surface of the filter screen has tiny holes for the atomized drug to pass through.

4. The emergency and critical care oxygen supply and drug delivery device according to claim 1, characterized in that: A magnetic card slot (202) is provided on the outer side of the front end of the drug delivery chamber (2); a magnetic connector (301) is provided on the periphery of the rear output shaft (302) of the drive motor (3).

5. The emergency and critical care oxygen supply and drug delivery device according to claim 1, characterized in that: The sides of the breathing mask (1) are respectively connected to fixing straps (101), and the free ends of the fixing straps (101) are covered with Velcro.

6. The emergency and critical care oxygen supply and drug delivery device according to claim 1, characterized in that: A hollow silicone ring (102) is installed on the edge of the breathing mask (1) that comes into contact with the patient.

7. The emergency and critical care oxygen supply and drug delivery device according to claim 1, characterized in that: An exhalation port (103) is provided at the connection between the exhalation tube (104) and the breathing mask (1), and the exhalation port (103) is composed of several small holes.

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