Cavity aerosol administration device for medical care

Abstract

The invention relates to the field of atomizers, in particular to a cavity aerosol administration device for medical care, comprising: a mask in which a limiting bracket is fixedly arranged; one end of the transverse cavity cylinder is connected with the mask, the other end of the transverse cavity cylinder is communicated with the vertical cavity cylinder, a medicine feeding pipe is coaxially arranged in the transverse cavity cylinder, and a medicine feeding piston cylinder is arranged in the vertical cavity cylinder; the medicine feeding pipe is linearly and slidably installed in the limiting support, an atomizing nozzle is arranged at one end of the medicine feeding pipe and arranged in the mask, the other end of the medicine feeding pipe is communicated with the medicine feeding piston cylinder through a medicine guiding hose, and a positioning pressing pipe is arranged at the bottom end of the medicine feeding piston cylinder. The function of a one-way valve is achieved through the first valve and the second valve, the dosing process and the breathing exhaust process can be conducted in the two independent cavities respectively, exhaled gas is effectively prevented from entering the medicine storage tank to pollute medicine, and the treatment effect can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of atomizers, and in particular to a cavity aerosol drug delivery device for medical care. Background Art

[0002] Medical atomizer, also known as medical nebulizer, is a device that atomizes liquid medicine into tiny particles, so that the medicine can enter the respiratory tract and lungs through inhalation, thereby achieving the purpose of treating respiratory diseases. Medical nebulizers are suitable for all kinds of patients who need atomization treatment, including children, adults and the elderly. Especially for patients with respiratory diseases, such as asthma, bronchitis, chronic obstructive pulmonary disease, etc., atomization treatment is an effective and convenient treatment method.

[0003] During use of the current nebulizer, the two ends of the infusion cavity are connected to the medicine container and the inhalation end respectively, and the patient inhales the atomized medicine through the inhalation end. However, since the breathing process of such patients is often rapid, the exhaled gas of the patient during inhalation treatment can easily enter the medicine container through the infusion cavity, causing the bacteria in the gas to contaminate the medicine, seriously affecting the treatment effect. Summary of the invention

[0004] The purpose of the present invention is to provide a cavity aerosol drug delivery device for medical care, aiming to solve the above technical problems.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A cavity aerosol drug delivery device for medical care, comprising:

[0007] A face mask, wherein a limiting bracket is fixedly arranged inside the face mask.

[0008] A transverse cavity tube, one end of which is connected to the mask, and the other end of which is connected to the vertical cavity tube. A drug delivery tube is coaxially arranged inside the transverse cavity tube, and a drug delivery piston cylinder is arranged inside the vertical cavity tube.

[0009] The drug delivery tube is linearly slidably installed in the limiting bracket, one end of the drug delivery tube is provided with an atomizing nozzle, the atomizing nozzle is arranged inside the mask, the other end of the drug delivery tube is connected with the drug feeding piston cylinder through a drug guiding hose, the bottom end of the drug feeding piston cylinder is provided with a positioning pressure tube, a fixed bracket is fixedly arranged inside the vertical cavity cylinder, the positioning pressure tube is fixedly installed in the fixed bracket, and a piston rod is slidably penetrated through the top end of the drug feeding piston cylinder.

[0010] The cover body is integrally connected to the bottom of the vertical cavity tube. A pressing portion is extended from the bottom end of the vertical cavity tube. The pressing portion is located in the cover body. Internal air outlets are evenly penetrated on the outer wall of the pressing portion.

[0011] The medicine storage tank is fixedly arranged at the bottom of the cover body, a boss portion is arranged at the top of the medicine storage tank, a mounting groove is arranged at the upper end of the boss portion, a shunt pipe is arranged at the center of the bottom of the boss portion, shunt cavities are evenly penetrated inside the shunt pipe, and a medicine inlet cavity is arranged at the bottom of the shunt pipe.

[0012] The diaphragm plate is adapted to be installed in the installation groove, a positioning countersunk hole is provided through the center of the diaphragm plate, a first valve corresponding to the diversion cavity is provided at the bottom of the positioning countersunk hole, the positioning pressure tube is adapted to be installed in the positioning countersunk hole and pressed against the first valve, a raised edge is extended upwardly from the edge of the diaphragm plate, the pressing portion is pressed against the diaphragm plate and fits tightly against the inner wall of the raised edge, and second valves corresponding to the internal air outlets are evenly provided on the raised edge, and the second valve closes the corresponding internal air outlet.

[0013] As a further solution of the present invention: a limiting protrusion is provided at the top of the shunt tube, and a limiting notch adapted to the first valve is formed between the limiting protrusion and the bottom of the installation groove, and the first valve is pressed against the limiting notch and closes the corresponding shunt cavity.

[0014] As a further solution of the present invention: positioning grooves are evenly arranged on the outer wall of the pressing portion, and positioning blocks are evenly arranged on the inner wall along the edge of the protrusion. The positioning blocks correspond to the positioning grooves one by one and are engaged with each other.

[0015] As a further solution of the present invention: the outer wall of the cover body is evenly penetrated with outgoing air outlets, the bottom edge of the cover body is evenly provided with card blocks, the top edge of the medicine storage tank is evenly provided with card grooves, and the card blocks correspond to the card grooves one by one and are engaged with each other.

[0016] As a further solution of the present invention: a pressing groove is arranged at the top of the vertical cavity tube, a pressing part is fixedly arranged at the top of the piston rod, the pressing part is movably installed in the pressing groove, a return spring is arranged between the bottom end of the pressing part and the pressing groove, and a piston plate is fixedly arranged at the bottom end of the piston rod.

[0017] As a further solution of the present invention: a one-way valve is arranged at one end of the drug guiding hose away from the drug inlet piston cylinder, and the direction of the one-way valve is from the drug guiding hose toward the drug delivery tube.

[0018] As a further solution of the present invention: a linear tooth plate is arranged at the bottom of the dosing tube, a baffle is arranged on the outer wall of the dosing tube, and a return spring is arranged between the baffle and the limiting bracket.

[0019] As a further solution of the present invention: a trigger movable groove is provided at the bottom of the transverse cavity tube, a control trigger is provided in the trigger movable groove, the control trigger is rotatably connected to the transverse cavity tube through a torsion spring shaft, an arc-shaped tooth groove is provided on the top of the control trigger, and the arc-shaped tooth groove is meshed with a straight tooth plate.

[0020] As a further solution of the present invention: a narrow-diameter cavity is arranged inside the atomizing nozzle, one end of the narrow-diameter cavity is connected to an atomizing cavity, and a plurality of nozzles are evenly arranged on the front end surface of the atomizing nozzle, and the nozzles are connected to the atomizing cavity.

[0021] Beneficial effects of the present invention:

[0022] (1) When the drug is injected, negative pressure suction is generated in the drug injection piston cylinder. At this time, the drug liquid in the drug storage tank will be sucked into the shunt cavity through the drug injection cavity tube, and continue to push the first valve upward. At this time, the first valve is open, and the drug liquid will enter the drug injection piston cylinder from the positioning pressure tube. When the drug injection stops, the first valve will quickly reset to close the shunt cavity. The gravity of the drug liquid will cause the first valve to be tightly pressed against the top of the shunt cavity without leakage, which is conducive to controlling the accuracy of the drug injection amount. Subsequently, the drug liquid will be passed into the drug administration tube through the drug guide hose. When the patient is breathing, the exhaled gas will enter the outer side of the positioning pressure tube along the horizontal cavity tube and the vertical cavity tube. At this time, the pressure between the pressing part and the positioning pressure tube increases, and the gas will gradually push open the second valve, so that the exhaled gas is discharged from the inner air outlet. The first valve and the second valve realize the function of a one-way valve, so that the drug administration process and the breathing and exhaust process can be carried out in two independent cavities respectively, effectively avoiding the exhaled gas from entering the medicine storage tank and contaminating the medicine, which is beneficial to improving the treatment effect.

[0023] (2) By setting a pressing part, the patient presses the pressing part, and the pressing part will drive the piston plate to slide downward through the piston rod. At this time, the reset spring is compressed and deformed, and the pressure in the drug inlet piston cylinder increases. At this time, the drug liquid in the drug inlet piston cylinder will be squeezed into the drug guide hose and passed into the drug delivery tube through the one-way valve. When the pressing part is released, the pressing part will be lifted and reset under the elastic force of the reset spring, and drive the piston plate to slide upward. At this time, the pressure in the drug inlet piston cylinder is reduced, and negative pressure suction is generated. Due to the non-return effect of the one-way valve, the negative pressure in the drug inlet piston cylinder only acts on the first valve through the positioning pressure tube, so that the drug liquid is sucked into the diversion cavity through the drug inlet cavity tube, and enters the drug inlet piston cylinder through the positioning pressure tube, thereby realizing the drug inlet process. The pressing cycle is repeated to realize a continuous liquid inlet and discharge process.

[0024] (3) By setting a control trigger, during the drug administration process, the patient can use his thumb to pull the control trigger to rotate it around the torsion spring axis. The control trigger will drive the arc-shaped tooth groove to flip, and the arc-shaped tooth groove will drive the drug administration tube to slide linearly in the limit bracket through the meshing action with the linear tooth plate. At the same time, the baffle squeezes the return spring to cause compression deformation. The greater the rotation amplitude of the control trigger, the deeper the drug administration tube slides into the oral cavity. When the control trigger is released, the drug administration tube will slide in the opposite direction under the action of the return spring, so that the patient can independently adjust the drug administration depth when the drug administration tube enters the oral cavity, which is convenient for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 It is a cross-sectional schematic diagram of the present invention.

[0028] Figure 3 It is a schematic diagram of the structural explosion of the present invention.

[0029] Figure 4 It is a structural schematic diagram of the vertical cavity tube in the present invention.

[0030] Figure 5 It is a structural schematic diagram of the membrane plate in the present invention.

[0031] Figure 6 It is a structural schematic diagram of the medicine storage tank in the present invention.

[0032] Figure 7 It is a schematic diagram of the internal structure of the cover body and the medicine storage tank in the present invention.

[0033] Figure 8 yes Figure 7 A schematic diagram of the enlarged structure at point A in the middle.

[0034] Fig. 9 It is a schematic diagram of the structure of the transverse cavity tube and the drug delivery tube in the present invention.

[0035] Fig.10 It is a structural schematic diagram of the atomizing nozzle in the present invention.

[0036] In the figure:

[0037] 1. Mask; 101. Limit bracket;

[0038] 2. Horizontal cavity; 201. Trigger movable groove; 202. Control trigger; 2021. Torsion spring shaft; 2022. Arc tooth groove;

[0039] 3. Vertical cavity tube; 301. Pressing groove; 302. Pressing portion; 3021. Internal air outlet; 3022. Positioning groove; 303. Fixed bracket;

[0040] 4. Cover body; 401. Outlet air outlet; 402. Block;

[0041] 5. Medicine storage tank; 501. Medicine inlet; 502. Boss; 503. Mounting groove; 504. Diverter pipe; 5041. Diverter cavity; 5042. Position limiting protrusion; 505. Medicine inlet cavity; 506. Card slot;

[0042] 6. Medicine inlet piston cylinder; 601. Positioning and pressing tube; 602. Piston rod; 603. Pressing part; 604. Return spring; 605. Piston plate;

[0043] 7. drug delivery tube; 701. drug guiding hose; 7011. one-way valve; 702. linear tooth plate; 703. baffle; 704. return spring; 705. atomizing nozzle; 7051. narrow-diameter cavity; 7052. atomizing cavity; 7053. nozzle;

[0044] 8. Diaphragm plate; 801. Positioning countersunk hole; 8011. First valve; 802. Raised edge; 8021. Second valve; 8022. Positioning block. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] See also Figure 1-Figure 9 As shown, the present invention is a cavity aerosol drug delivery device for medical care, comprising:

[0047] The mask 1 has a limit bracket 101 fixedly arranged inside the mask 1.

[0048] The mask 1 is made of elastic rubber material and its shape conforms to ergonomic design so that it can fit the patient's mouth and nose as closely as possible.

[0049] The horizontal cavity tube 2 has one end connected to the mask 1 and the other end connected to the vertical cavity tube 3. A drug delivery tube 7 is coaxially arranged inside the horizontal cavity tube 2, and a drug delivery piston cylinder 6 is arranged inside the vertical cavity tube 3.

[0050] Specifically, the dosing tube 7 and the drug inlet piston cylinder 6 form an internal drug supply channel, and an external breathing channel is formed between the outer wall of the dosing tube 7 and the horizontal cavity cylinder 2 and between the outer wall of the drug inlet piston cylinder 6 and the vertical cavity cylinder 3. When the patient needs aerosol treatment, the drug supply channel is used to carry out the drug administration process, and during the treatment process, the gas exhaled by the patient will be discharged through the breathing channel. The inner and outer channels are isolated and independent from each other, thereby effectively avoiding the contamination of the medicine by the gas exhaled by the patient during the treatment process.

[0051] The drug delivery tube 7 is linearly slidably installed in the limiting bracket 101, an atomizing nozzle 705 is arranged at one end of the drug delivery tube 7, and the atomizing nozzle 705 is arranged inside the mask 1, and the other end of the drug delivery tube 7 is connected with the drug inlet piston cylinder 6 through the drug guiding hose 701, and a positioning pressure tube 601 is arranged at the bottom end of the drug inlet piston cylinder 6, a fixed bracket 303 is fixedly arranged inside the vertical cavity tube 3, and the positioning pressure tube 601 is fixedly installed in the fixed bracket 303, and a piston rod 602 is slidably penetrated through the top end of the drug inlet piston cylinder 6.

[0052] Specifically, during the drug administration process, the drug administration tube 7 can slide back and forth in the limiting bracket 101, so as to adjust the drug administration depth of the atomizing nozzle 705 entering the oral cavity, and at the same time, the piston rod 602 is used to control the drug administration process, so that the patient can independently control the dosage of each drug.

[0053] The cover body 4 is integrally connected to the bottom of the vertical cavity tube 3 . A pressing portion 302 is extended from the bottom end of the vertical cavity tube 3 . The pressing portion 302 is located inside the cover body 4 . Internal air outlets 3021 are evenly penetrated on the outer wall of the pressing portion 302 .

[0054] The medicine storage tank 5 is fixedly arranged at the bottom of the cover body 4, a boss portion 502 is arranged at the top of the medicine storage tank 5, a mounting groove 503 is arranged at the upper end of the boss portion 502, a shunt pipe 504 is arranged at the center of the bottom of the boss portion 502, a shunt cavity 5041 is evenly penetrated inside the shunt pipe 504, and a medicine inlet cavity 505 is arranged at the bottom of the shunt pipe 504.

[0055] Specifically, the medicine storage tank 5 is made of a transparent material, and a medicine inlet 501 is provided on one side of the medicine storage tank 5 . By observing the content of the medicine liquid in the medicine storage tank 5 , when it is found that the medicine liquid has reached the bottom, the medicine liquid can be replenished in time through the medicine inlet 501 .

[0056] The diaphragm plate 8 is adapted to be installed in the installation groove 503, and a positioning countersunk hole 801 is set through the center of the diaphragm plate 8. A first valve 801 corresponding to the diversion cavity 5041 is set at the bottom of the positioning countersunk hole 801. The positioning pressure tube 601 is adapted to be installed in the positioning countersunk hole 801 and pressed against the first valve 8011. A raised edge 802 is extended upward from the edge of the diaphragm plate 8. The pressing part 302 presses against the diaphragm plate 8 and fits tightly against the inner wall of the raised edge 802. Second valves 8021 corresponding to the inner air outlets 3021 are evenly set on the raised edge 802, and the second valve 8021 closes the corresponding inner air outlet 3021.

[0057] Specifically, by setting the diaphragm plate 8, the positioning countersunk hole 801 is used to realize the precise positioning of the positioning pressure tube 601, and the raised edge 802 is used to realize the precise positioning of the pressing part 302. The structure is stable and reliable, and the assembly is convenient and accurate. At the same time, independent drug supply channels and breathing exhaust channels are formed inside and outside the positioning pressure tube 601. When the drug is fed, negative pressure suction is generated in the drug feeding piston cylinder 6. At this time, the drug liquid in the drug storage tank 5 will be sucked into the diversion cavity 5041 through the drug feeding cavity tube 505, and continue to push the first valve 8011 upward. At this time, the first valve 8011 is opened, and the drug liquid will enter the drug feeding piston cylinder from the positioning pressure tube 601. 6, when the drug feeding stops, the first valve 8011 will quickly reset to close the shunt channel 5041, and the gravity of the drug liquid will make the first valve 8011 tightly pressed against the top of the shunt channel 5041 without leakage, which is conducive to controlling the accuracy of the drug feeding amount. Then the drug liquid will pass into the drug delivery tube 7 through the drug guiding hose 701. When the patient is breathing, the exhaled gas will enter the outer side of the positioning pressure tube 601 along the horizontal cavity tube 2 and the vertical cavity tube 3. At this time, the pressure between the pressing part 302 and the positioning pressure tube 601 increases, and the gas will gradually push open the second valve 8021, so that the exhaled gas is discharged from the inner gas outlet 3021. The function of the one-way valve 7011 is realized by using the first valve 8011 and the second valve 8021, so that the drug delivery process and the breathing exhaust process can be carried out in two independent cavities respectively, effectively avoiding the exhaled gas from entering the drug storage tank 5 and contaminating the drug, which is conducive to improving the treatment effect.

[0058] like Figure 5 and Figure 8 As shown, a limiting protrusion 5042 is provided at the top of the shunt tube 504, and a limiting notch matched with the first valve 8011 is formed between the limiting protrusion 5042 and the bottom of the installation groove 503. The first valve 8011 presses against the limiting notch and closes the corresponding shunt cavity 5041.

[0059] Specifically, a limiting protrusion 5042 is provided to form a limiting groove to support and limit the first valve 8011. The first valve 8011 is constrained in the first valve 8011 to seal the diversion cavity 5041. At the same time, when the drug injection is completed and the internal pressure of the drug injection piston cylinder 6 begins to increase, the gravity of the drug solution and the pressure of the gas will act on the first valve 8011. If there is no limiting groove to support and limit the first valve 8011, the first valve 8011 will easily fold downward, thereby causing leakage of the drug solution. Due to the supporting effect of the limiting groove, the first valve 8011 will always be tightly pressed against the top of the diversion cavity 5041 under the action of the gravity of the drug solution and the gas pressure, so as to seal the diversion cavity 5041 well and avoid leakage of the drug solution.

[0060] like Figure 4 and Figure 5 As shown, positioning grooves 3022 are evenly arranged on the outer wall of the pressing portion 302, and positioning blocks 8022 are evenly arranged on the inner wall of the raised edge 802. The positioning blocks 8022 correspond to the positioning grooves 3022 one by one and are engaged with each other.

[0061] Specifically, by utilizing the engagement between the positioning block 8022 and the positioning groove 3022 , the pressing portion 302 can be accurately pressed against the membrane plate 8 , and at the same time, the inner air outlet 3021 on the pressing portion 302 can be accurately aligned with the second valve 8021 , making disassembly and assembly convenient and quick.

[0062] like Figure 4 and Figure 6 As shown, the outer wall of the cover body 4 is evenly penetrated with an outgoing air outlet 401, the bottom edge of the cover body 4 is evenly provided with a card block 402, and the top edge of the medicine storage tank 5 is evenly provided with a card slot 506, and the card block 402 corresponds to the card slot 506 one by one and is engaged with each other.

[0063] Specifically, by utilizing the engagement between the block 402 and the slot 506 , rapid positioning and installation between the cover 4 and the medicine storage tank 5 can be achieved, and rapid replacement of internal components is also facilitated.

[0064] like Figure 7 As shown, a pressing groove 301 is provided at the top of the vertical chamber tube 3, a pressing portion 603 is fixedly provided at the top of the piston rod 602, the pressing portion 603 is movably installed in the pressing groove 301, a return spring 604 is provided between the bottom end of the pressing portion 603 and the pressing groove 301, and a piston plate 605 is fixedly provided at the bottom end of the piston rod 602.

[0065] Furthermore, a one-way valve 7011 is provided at one end of the drug guiding hose 701 away from the drug inlet piston cylinder 6 , and the direction of the one-way valve 701 is from the drug guiding hose 701 toward the drug delivery tube 7 .

[0066] Specifically, by providing the pressing portion 603, the patient presses the pressing portion 603, and the pressing portion 603 drives the piston plate 605 to slide downward through the piston rod 602. At this time, the return spring 604 is compressed and deformed, and the pressure in the medicine feeding piston cylinder 6 increases. At this time, the medicine liquid in the medicine feeding piston cylinder 6 will be squeezed into the medicine guiding hose 701 and passed into the medicine administering tube 7 through the one-way valve 7011. When the pressing portion 603 is released, the pressing portion 603 will be lifted and reset under the elastic force of the return spring 604. And it drives the piston plate 605 to slide upward. At this time, the pressure in the medicine feeding piston cylinder 6 is reduced and negative pressure suction is generated. Due to the non-return effect of the one-way valve 7011, the negative pressure in the medicine feeding piston cylinder 6 only acts on the first valve 8011 through the positioning pressure tube 601, so that the medicine liquid is sucked into the diversion cavity 5041 through the medicine feeding cavity tube 505, and enters the medicine feeding piston cylinder 6 through the positioning pressure tube 601, thereby realizing the medicine feeding process, and the pressing cycle is repeated to realize the continuous liquid feeding and discharge process.

[0067] like Fig. 9 As shown, a linear tooth plate 702 is provided at the bottom of the dosing tube 7 , a baffle plate 703 is provided on the outer wall of the dosing tube 7 , and a return spring 704 is provided between the baffle plate 703 and the limiting bracket 101 .

[0068] Furthermore, a trigger movable groove 201 is provided at the bottom of the transverse cavity tube 2, and a control trigger 202 is provided in the trigger movable groove 201. The control trigger 202 is rotatably connected to the transverse cavity tube 2 through a torsion spring shaft 2021. An arc-shaped tooth groove 2022 is provided on the top of the control trigger 202, and the arc-shaped tooth groove 2022 is meshed with the straight tooth plate 702.

[0069] Specifically, by setting a control trigger 202, during the drug administration process, the patient can use his thumb to pull the control trigger 202 to rotate it around the torsion spring shaft 2021, and the control trigger 202 will drive the arc-shaped tooth groove 2022 to flip, and the arc-shaped tooth groove 2022 will drive the drug administration tube 7 to slide linearly in the limiting bracket 101 through the meshing action with the linear tooth plate 702. At the same time, the baffle 703 squeezes the return spring 704 to cause compression deformation, and the greater the rotation amplitude of the control trigger 202, the deeper the sliding distance of the drug administration tube 7 into the oral cavity. When the control trigger 202 is released, the drug administration tube 7 will slide in the opposite direction under the action of the return spring 704, so that the patient can independently adjust the drug administration depth when the drug administration tube 7 enters the oral cavity, which is convenient for use.

[0070] like Fig.10 As shown, a narrow-diameter cavity 7051 is provided inside the atomizing nozzle 705 , one end of the narrow-diameter cavity 7051 is connected to an atomizing cavity 7052 , and a plurality of nozzles 7053 are evenly arranged on the front end surface of the atomizing nozzle 705 , and the nozzles 7053 are connected to the atomizing cavity 7052 .

[0071] Specifically, when the drug liquid in the dosing tube 7 flows through the atomizing nozzle 705, the Venturi effect formed by the narrow-diameter cavity 7051 effectively increases the flow rate of the drug liquid entering the atomizing cavity 7052. At the same time, when the drug liquid is sprayed out through the nozzle 7053, the flow rate of the drug liquid is further increased and forms fine droplets. The drug liquid is easier to diffuse and absorb, can better exert its efficacy, and is conducive to improving the treatment effect.

[0072] The working principle of the present invention is as follows: Figure 1-Figure 10 As shown, when in use, the mask 1 covers the patient's mouth and nose, and the atomizer nozzle 705 enters the patient's mouth. At this time, the patient holds the medicine storage tank 5, presses the index finger on the pressing part 603, and buckles the thumb on the control trigger 202. The patient presses the pressing part 603, and the pressing part 603 drives the piston plate 605 to slide downward through the piston rod 602. At this time, the reset spring 604 is compressed and deformed, and the pressure in the medicine feeding piston cylinder 6 increases. At this time, the medicine liquid in the medicine feeding piston cylinder 6 will be squeezed into the medicine guiding hose 701, and passed into the drug delivery tube 7 through the one-way valve 7011. When the pressing part 603 is released, the pressing part 603 will be lifted and reset under the elastic force of the reset spring 604, and drive the piston plate 6 05 slides upward, at this time, the pressure in the medicine feeding piston cylinder 6 decreases, and negative pressure suction is generated. Due to the non-return effect of the one-way valve 7011, the negative pressure in the medicine feeding piston cylinder 6 acts on the first valve 8011 only through the positioning pressure tube 601, so that the medicine liquid is sucked into the diversion cavity 5041 through the medicine feeding cavity tube 505, and enters the medicine feeding piston cylinder 6 through the positioning pressure tube 601, thereby realizing the medicine feeding process, and the pressing cycle is repeated to realize the continuous liquid feeding and liquid discharge process. When the medicine liquid in the drug delivery tube 7 flows through the atomizing nozzle 705, the Venturi effect formed by the narrow-diameter cavity 7051 is used to effectively increase the flow rate of the medicine liquid entering the atomizing cavity 7052. At the same time, when it is sprayed out through the nozzle 7053, the flow rate of the medicine liquid is further increased and fine droplets are formed, making it easier for the medicine liquid to diffuse and absorb. During the medication process, the patient can use his thumb to pull the control trigger 202 to rotate it around the torsion spring shaft 2021. The control trigger 202 will drive the arc-shaped tooth groove 2022 to flip, and the arc-shaped tooth groove 2022 will drive the medication tube 7 to slide linearly in the limiting bracket 101 through the meshing action with the linear tooth plate 702. At the same time, the baffle 703 squeezes the return spring 704 to cause compression deformation. The greater the rotation amplitude of the control trigger 202, the deeper the medication tube 7 slides into the oral cavity. When the control trigger 202 is released, the medication tube 7 will slide in the opposite direction under the action of the return spring 704, so that the patient can independently adjust the medication depth when the medication tube 7 enters the oral cavity, which is convenient for use.

[0073] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A cavity aerosol drug delivery device for medical care, characterized in that: include; A face mask (1), wherein a limiting bracket (101) is fixedly arranged inside the face mask (1); A transverse cavity cylinder (2), one end of which is connected to the mask (1), and the other end of which is connected to the vertical cavity cylinder (3); a drug delivery tube (7) is coaxially arranged inside the transverse cavity cylinder (2), and a drug delivery piston cylinder (6) is arranged inside the vertical cavity cylinder (3); The drug delivery tube (7) is linearly slidably installed in the limiting bracket (101), one end of the drug delivery tube (7) is provided with an atomizing nozzle (705), and the atomizing nozzle (705) is arranged inside the mask (1), the other end of the drug delivery tube (7) is connected with the drug inlet piston cylinder (6) through the drug guiding hose (701), the bottom end of the drug inlet piston cylinder (6) is provided with a positioning pressure tube (601), a fixed bracket (303) is fixedly arranged inside the vertical chamber cylinder (3), the positioning pressure tube (601) is fixedly installed in the fixed bracket (303), and a piston rod (602) is slidably penetrated through the top end of the drug inlet piston cylinder (6); A cover body (4), the cover body (4) is integrally connected to the bottom of the vertical cavity tube (3), a pressing portion (302) is extended from the bottom end of the vertical cavity tube (3), the pressing portion (302) is located inside the cover body (4), and inner air outlets (3021) are evenly penetrated on the outer wall of the pressing portion (302); A medicine storage tank (5), the medicine storage tank (5) is fixedly arranged at the bottom of the cover body (4), a boss portion (502) is arranged at the top of the medicine storage tank (5), a mounting groove (503) is arranged at the upper end of the boss portion (502), a shunt pipe (504) is arranged at the center of the bottom of the boss portion (502), a shunt cavity (5041) is evenly penetrated inside the shunt pipe (504), and a medicine inlet cavity (505) is arranged at the bottom of the shunt pipe (504); A diaphragm (8), wherein the diaphragm (8) is adapted to be installed in the installation groove (503), a positioning countersunk hole (801) is provided through the center of the diaphragm (8), a first valve (8011) corresponding to the diversion cavity (5041) is provided at the bottom of the positioning countersunk hole (801), the positioning pressure tube (601) is adapted to be installed in the positioning countersunk hole (801) and pressed against the first valve (8011), a raised edge (802) is extended upwardly from the edge of the diaphragm (8), the pressing portion (302) is pressed against the diaphragm (8) and is adapted to be tightly attached to the inner wall of the raised edge (802), and second valves (8021) corresponding to the inner air outlets (3021) are evenly provided on the raised edge (802), and the second valve (8021) closes the corresponding inner air outlet (3021).

2. A cavity aerosol drug delivery device for medical care according to claim 1, characterized in that: A limiting protrusion (5042) is provided at the top of the shunt tube (504), and a limiting notch adapted to the first valve (8011) is formed between the limiting protrusion (5042) and the bottom of the mounting groove (503), and the first valve (8011) is pressed against the limiting notch and closes the corresponding shunt cavity (5041).

3. The cavity aerosol drug delivery device for medical care according to claim 1, characterized in that: Positioning grooves (3022) are evenly arranged on the outer wall of the pressing portion (302), and positioning blocks (8022) are evenly arranged on the inner wall of the raised edge (802). The positioning blocks (8022) correspond to the positioning grooves (3022) one by one and are engaged with each other.

4. The intracavitary aerosol drug delivery device for medical care according to claim 1, characterized in that: The outer wall of the cover body (4) is evenly provided with an outgoing air outlet (401), the bottom edge of the cover body (4) is evenly provided with a clamping block (402), and the top edge of the medicine storage tank (5) is evenly provided with a clamping groove (506), and the clamping block (402) corresponds to the clamping groove (506) one by one and is engaged with each other.

5. The cavity aerosol drug delivery device for medical care according to claim 1, characterized in that: A pressing groove (301) is arranged at the top end of the vertical chamber tube (3); a pressing portion (603) is fixedly arranged at the top end of the piston rod (602); the pressing portion (603) is movably installed in the pressing groove (301); a return spring (604) is arranged between the bottom end of the pressing portion (603) and the pressing groove (301); and a piston plate (605) is fixedly arranged at the bottom end of the piston rod (602).

6. The cavity aerosol drug delivery device for medical care according to claim 5, characterized in that: A one-way valve (7011) is provided at one end of the drug-guiding hose (701) away from the drug-feeding piston cylinder (6), and the direction of the one-way valve (7011) is from the drug-guiding hose (701) toward the drug-feeding tube (7).

7. The cavity aerosol drug delivery device for medical care according to claim 1, characterized in that: A linear tooth plate (702) is provided at the bottom of the dosing tube (7), a baffle (703) is provided on the outer wall of the dosing tube (7), and a return spring (704) is provided between the baffle (703) and the limiting bracket (101).

8. The cavity aerosol drug delivery device for medical care according to claim 7, characterized in that: A trigger movable groove (201) is arranged at the bottom of the transverse cavity tube (2), a control trigger (202) is arranged in the trigger movable groove (201), the control trigger (202) is rotatably connected to the transverse cavity tube (2) via a torsion spring shaft (2021), an arc-shaped tooth groove (2022) is arranged at the top of the control trigger (202), and the arc-shaped tooth groove (2022) is meshed with the straight tooth plate (702).

9. The intracavitary aerosol drug delivery device for medical care according to claim 1, characterized in that: A narrow-diameter cavity (7051) is arranged inside the atomizing nozzle (705), one end of the narrow-diameter cavity (7051) is connected to an atomizing cavity (7052), and a plurality of nozzles (7053) are evenly arranged on the front end surface of the atomizing nozzle (705), and the nozzles (7053) are connected to the atomizing cavity (7052).

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