Atomization dosing device

Abstract

The utility model provides an atomization dosing device. The atomization dosing device comprises an outer sleeve, a core rod, a rotational flow piece and a spray head which are sequentially arranged. Wherein one end of the outer sleeve is provided with a liquid medicine inlet, the core rod is fixedly arranged at the other end of the outer sleeve, a second liquid medicine channel is arranged in a space between the outer surface of the core rod and the inner surface of the outer sleeve and / or in the core rod, and the overflowing area of the second liquid medicine channel at a set part is set to be smaller than the overflowing area of the first liquid medicine channel. The rotational flow piece is fixedly arranged at the end, away from the outer sleeve, of the core rod and provided with an overflowing hole, and the nozzle is fixedly arranged at the end, away from the outer sleeve, of the rotational flow piece. According to the utility model, liquid medicine enters the outer sleeve from the liquid medicine inlet, is pressurized and accelerated after passing through the second liquid medicine inlet, then passes through the overflowing hole of the rotational flow piece to generate rotational flow, impacts the overflowing hole and is converted into small liquid drops, so that the atomization effect is improved, and finally, the liquid medicine is converted into liquid drops with smaller diameters through the superfine liquid outlet in the spray head; and the atomization effect is improved again.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an atomizing drug dispenser. Background Art

[0002] Peritoneal pressurized aerosol chemotherapy (PIPAC) is a new minimally invasive surgical technique for treating intra-abdominal tumors, aiming to treat metastatic cancers within the abdomen, especially those that spread to the peritoneal surface, such as ovarian, colon, and bladder cancers. Peritoneal pressurized aerosol chemotherapy involves introducing a pressurization system into the patient's abdomen and spraying atomized chemotherapy drugs onto the tumors on the peritoneal surface to enhance the treatment effect. Patients can complete the treatment after a minimally invasive surgery that only takes about one hour. This repeatable treatment procedure needs to be carried out regularly, generally as an auxiliary procedure to systemic chemotherapy. Research shows that peritoneal pressurized aerosol chemotherapy can relieve the symptoms of peritoneal metastasis, such as reducing pain, ascites, and obstructive symptoms, as well as reducing the side effects of chemotherapy, thus helping to improve the quality of life of patients.

[0003] During peritoneal pressurized aerosol chemotherapy treatment, a surgeon will insert a micro air pump into the patient's abdomen to inject pressurized atomized chemotherapy drugs into the peritoneal cavity. At the same time, the doctor will observe the whole process through a laparoscope. The degree of drug atomization affects the penetration of the drug and thus affects the body's absorption of the drug. The degree of drug atomization in the prior art is relatively low, and the unatomized liquid medicine that is not absorbed by the body will be extracted from the abdominal cavity by the laparoscope for waste treatment. Excessive waste will cause unnecessary waste of funds and drugs. Summary of the Utility Model

[0004] In view of this, embodiments of the present utility model provide an atomizing drug dispenser to eliminate or improve one or more defects existing in the prior art.

[0005] The present utility model provides an atomizing drug dispenser, which includes: an outer sleeve, a core rod, a swirl member, and a nozzle arranged in sequence;

[0006] Wherein, one end of the outer sleeve has a liquid medicine inlet, and the inner part of the outer sleeve has a first liquid medicine channel extending along the extension direction of the outer sleeve;

[0007] The core rod is fixedly arranged at the other end of the outer sleeve. The space between the outer surface of the core rod and the inner surface of the outer sleeve and / or the core rod has a second liquid medicine channel. The second liquid medicine channel is respectively communicated with the first liquid medicine channel and the swirl member. The cross-sectional area of the second liquid medicine channel at a set position is set to be smaller than the cross-sectional area of the first liquid medicine channel, so that the liquid medicine can be pressurized and accelerated;

[0008] The swirl member is fixedly arranged at one end of the core rod away from the outer sleeve, and the swirl member has a flow-through hole to cause a swirling effect on the liquid medicine;

[0009] The nozzle is fixedly arranged at one end of the swirl member away from the outer sleeve, so that the liquid medicine is sprayed out after passing through the swirl member.

[0010] In some embodiments of the present invention, the flow-through hole includes a main hole and a plurality of tangential holes, and each of the tangential holes is arranged along the same swirling direction on the outer periphery of the main hole. Each of the tangential holes is communicated with the main hole, and the plurality of tangential holes are arranged in a uniform or non-uniform manner.

[0011] In some embodiments of the present invention, the second liquid medicine channel includes an annular channel and a connecting channel that are communicated with each other;

[0012] The core rod has a drainage section, and the drainage section is arranged inside the outer sleeve and the outer diameter of the drainage section is smaller than the inner diameter of the outer sleeve, so that the space between the outer wall of the drainage section and the inner wall of the outer sleeve forms the annular channel;

[0013] The connecting channel includes a radial channel and a first axial channel arranged inside the core rod. At least one end of the radial channel is communicated with the annular channel, one end of the first axial channel is communicated with the radial channel, and the other end of the first axial channel is communicated with the swirl member.

[0014] In some embodiments of the present invention, the second liquid medicine channel includes a second axial channel; the core rod has a drainage section, and the drainage section is arranged inside the outer sleeve and the outer diameter of the drainage section is smaller than or equal to the inner diameter of the outer sleeve. The second axial channel is arranged inside the core rod, and both ends of the second axial channel are respectively communicated with the first liquid medicine channel and the swirl member.

[0015] In some embodiments of the present invention, a first installation groove is arranged at one end of the core rod away from the outer sleeve, a second installation groove is arranged at one end of the nozzle close to the core rod, and the swirl member is installed in the first installation groove and the second installation groove.

[0016] In some embodiments of the present invention, the nozzle has a conical cavity and a spray hole, the spray hole is communicated with the conical cavity, and the spray hole is arranged away from the swirl member.

[0017] In some embodiments of the present invention, the atomizing drug delivery device further includes a protective cap, the protective cap is sleeved on the outer sleeve, the core rod and the nozzle, the protective cap is connected to the outer sleeve and the core rod by threads, and a liquid outlet is arranged on one side of the protective cap close to the nozzle.

[0018] In some embodiments of the present utility model, sealing rings are provided at the joints where the protective cap is combined with the nozzle and the outer sleeve tube.

[0019] In some embodiments of the present utility model, a handle is sleeved on the outer sleeve tube.

[0020] In some embodiments of the present utility model, an installation part is provided at one end of the outer sleeve tube having a liquid medicine inlet. The installation part is used to connect to a high-pressure tube through a joint or directly. The high-pressure tube is used to convey the liquid medicine into the outer sleeve tube.

[0021] The atomizing medicine applicator of the present utility model has the following advantages and technical effects: The liquid medicine enters the outer sleeve tube from the liquid medicine inlet, is pressurized and accelerated after passing through the second liquid medicine passage, then generates a swirl after passing through the flow holes of the swirl element and impacts the flow holes to be converted into fine droplets, improving the atomization effect. Finally, it is converted into droplets with a smaller diameter through the extremely fine liquid outlet in the nozzle, further improving the atomization effect, directly acting on the lesion, and achieving a good treatment effect.

[0022] The additional advantages, objectives, and features of the present utility model will be partially described below and will become partially apparent to those of ordinary skill in the art after studying the following text, or can be learned through the practice of the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained through the structure specifically pointed out in the description and the drawings.

[0023] Those skilled in the art will understand that the objectives and advantages that can be achieved by the present utility model are not limited to the above specific descriptions, and it will be more clearly understood from the following detailed description that the above and other objectives that the present utility model can achieve. Description of the Drawings

[0024] The drawings described herein are used to provide a further understanding of the present utility model, form a part of this application, and do not limit the present utility model. The components in the drawings are not drawn to scale, but only to illustrate the principle of the present utility model. To facilitate the illustration and description of some parts of the present utility model, the corresponding parts in the drawings may be enlarged, that is, they may become larger relative to other components in the exemplary device actually manufactured according to the present utility model. In the drawings:

[0025] Figure 1 It is a schematic structural diagram of the atomizing medicine applicator in an embodiment of the present utility model.

[0026] Figure 2 is Figure 1 a partial enlarged view of A in

[0027] Figure 3 It is a schematic structural diagram of the swirl element in an embodiment of the present utility model.

[0028] Figure 4 This is a schematic structural diagram of the nozzle in an embodiment of the present utility model.

[0029] Figure 5 This is a schematic structural diagram of the second axial channel in an embodiment of the present utility model.

[0030] Reference numerals: 1, outer sleeve; 2, core rod; 21, drainage section; 22, installation section; 23, connection channel; 24, swirl chamber; 3, swirl member; 31, main hole; 32, tangential hole; 4, nozzle; 41, conical cavity; 42, spray hole; 5, annular channel; 6, protective cap; 61, sealing ring; 7, handle; 8, joint; 9, high-pressure pipe. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the implementation manners and the drawings. Herein, the illustrative implementation manners of the present utility model and their descriptions are used to explain the present utility model, but do not limit the present utility model.

[0032] Herein, it should also be noted that in order to avoid obscuring the present utility model due to unnecessary details, only the structures and / or processing steps closely related to the solution according to the present utility model are shown in the drawings, while other details less related to the present utility model are omitted.

[0033] It should be emphasized that the term "comprising / including" when used herein refers to the presence of features, elements, steps or components, but does not exclude the presence or addition of one or more other features, elements, steps or components.

[0034] Herein, it should also be noted that if not otherwise specified, the term "connection" in this text can not only refer to direct connection, but also represent indirect connection with an intermediate.

[0035] In the following, embodiments of the present utility model will be described with reference to the drawings. In the drawings, the same reference numerals represent the same or similar components, or the same or similar steps.

[0036] Intravenous chemotherapy has little effect on cancer peritoneal metastasis. Intraperitoneal administration can achieve a relatively high drug concentration in the abdominal cavity while maintaining a relatively low peripheral blood drug concentration. This not only increases the cytotoxic effect of the drug on peritoneal metastases but also reduces liver and kidney toxicity, gastrointestinal reactions, and other adverse reactions. When administering drugs intraperitoneally, the chemotherapeutic drugs are absorbed through the capillaries and lymphatic vessels in the mesentery and then enter the liver through the portal vein, increasing the chemotherapeutic drug concentration in the portal vein and enhancing the killing effect of the chemotherapeutic drugs on tumor cells in the portal vein and micrometastases in the liver parenchyma. This treatment method can extend the survival time of cancer patients and relieve the pain caused by chemotherapeutic drugs. Therefore, it is necessary to improve the atomization effect of the atomizing dispenser.

[0037] To solve the technical problem of insufficient atomization effect of the atomizing dispenser in the prior art, in this embodiment, the atomizing dispenser increases the pressure and flow rate of the liquid medicine by reducing the form of the liquid medicine flow channel in the atomizing dispenser. Through the swirling action of high-pressure liquid medicine and the impact action at high speed, the size of the liquid droplets formed by the liquid medicine is reduced, enhancing the atomization effect.

[0038] The embodiment of the present utility model provides an atomizing dispenser, which includes: an outer sleeve 1, a core rod 2, a swirling member 3, and a nozzle 4 arranged in sequence. One end of the outer sleeve 1 has a liquid medicine inlet, and the outer sleeve 1 has a first liquid medicine channel extending along the extension direction of the outer sleeve 1 inside. The core rod 2 is fixedly arranged at the other end of the outer sleeve 1. The space between the outer surface of the core rod 2 and the inner surface of the outer sleeve 1 and / or the core rod 2 has a second liquid medicine channel, and the second liquid medicine channel is respectively communicated with the first liquid medicine channel and the swirling member 3. The cross-sectional area of the second liquid medicine channel at a set position is set to be smaller than the cross-sectional area of the first liquid medicine channel, so that the liquid medicine can be pressurized and accelerated. The swirling member 3 is fixedly arranged at the end of the core rod 2 away from the outer sleeve 1, and the swirling member 3 has a flow-through hole, so that the liquid medicine generates a swirling action. The nozzle 4 is fixedly arranged at the end of the swirling member 3 away from the outer sleeve 1, so that the liquid medicine is ejected after passing through the swirling member 3.

[0039] Specifically, in this embodiment, both the outer sleeve 1 and the core rod 2 are slender parts, and the lengths of the swirling member 3 and the nozzle 4 are smaller than the dimensions of the outer sleeve 1 and the core rod 2 in the length direction of the atomizing dispenser, which is convenient for the atomizing dispenser to penetrate deep into the patient's abdominal cavity for drug administration treatment at the lesion site. The liquid medicine enters the outer sleeve 1 from the liquid medicine inlet, is pressurized and accelerated after passing through the second liquid medicine channel, then generates a swirl and impacts the flow-through hole through the flow-through hole of the swirling member 3 to be converted into fine liquid droplets, improving the atomization effect. Finally, it is converted into liquid droplets with a smaller diameter through the extremely fine liquid outlet in the nozzle 4, further improving the atomization effect and directly acting on the lesion to achieve a good treatment effect. It should be noted that the dispenser in this embodiment can also be used for the treatment of other diseases that require drug administration under laparoscopy.

[0040] In some embodiments, refer to Figure 3The flow-through hole includes a main hole 31 and a plurality of tangential holes 32. Each tangential hole 32 is arranged along the same rotation direction on the outer periphery of the main hole 31. Each tangential hole 32 is communicated with the main hole 31, and the plurality of tangential holes 32 are arranged in a uniform or non-uniform manner. More specifically, 4, 6 or 8 tangential holes 32 can be provided. The part of the tangential hole 32 far from the main hole 31 is rounded, and the joint of the tangential hole 32 and the main hole 31 has a tip structure. When the liquid medicine passes through the flow-through hole, the flow velocity of the liquid medicine at the main hole 31 is less than that at the tangential hole 32. Due to the velocity difference, a swirling effect is generated on the liquid medicine. The flow-through hole is of an irregular shape and has a tip structure. The liquid medicine collides with the flow-through hole, turning the liquid medicine into extremely small liquid droplets, which is beneficial to improving the atomization effect. When the liquid medicine swirls, the collision between the liquid medicine and the flow-through hole becomes more intense, and the formed liquid droplets are also finer.

[0041] In this embodiment, the second liquid medicine channel can be arranged between the outer surface of the core rod 2 and the inner surface of the outer sleeve 1, or inside the core rod 2, or between the outer surface of the core rod 2 and the inner surface of the outer sleeve 1 and inside the core rod 2.

[0042] In some embodiments, the second liquid medicine channel is arranged between the outer surface of the core rod 2 and the inner surface of the outer sleeve 1. The outer diameter of the core rod 2 is smaller than the inner diameter of the outer sleeve 1. The core rod 2 is arranged inside the outer sleeve 1. When the liquid medicine passes through the gap between the core rod 2 and the outer sleeve 1, due to the reduction of the flow-through area, the flow velocity and pressure of the liquid medicine are increased.

[0043] In some embodiments, the second liquid medicine channel is arranged inside the core rod 2. Refer to Figure 5 The second liquid medicine channel includes a second axial channel; the core rod 2 has a drainage section 21. The drainage section 21 is arranged inside the outer sleeve 1 and the outer diameter of the drainage section 21 is smaller than or equal to the inner diameter of the outer sleeve 1. The second axial channel is arranged inside the core rod 2. The two ends of the second axial channel are respectively communicated with the first liquid medicine channel and the swirling member 3. The inner diameter of the second axial channel is smaller than the inner diameter of the outer sleeve 1. After the liquid medicine enters the second axial channel, the flow velocity and pressure are increased.

[0044] In some embodiments, the second liquid medicine channel is arranged between the outer surface of the core rod 2 and the inner surface of the outer sleeve 1 and inside the core rod 2. Refer to Figure 1 and Figure 2The second liquid medicine channel includes an annular channel and a connecting channel 23 that are interconnected. The core rod 2 has a drainage section 21. The drainage section 21 is disposed inside the outer sleeve 1 and the outer diameter of the drainage section 21 is smaller than the inner diameter of the outer sleeve 1, such that the space between the outer wall of the drainage section 21 and the inner wall of the outer sleeve 1 forms an annular channel. The connecting channel 23 includes a radial channel and a first axial channel disposed inside the core rod 2. At least one end of the radial channel communicates with the annular channel, one end of the first axial channel communicates with the radial channel, and the other end of the first axial channel communicates with the swirl member 3. The flow area of the annular channel is smaller than the inner diameter of the outer sleeve 1. After the liquid medicine flow enters the annular channel, its flow rate is increased for the first time. The inner diameter of the radial channel can be set to be smaller than the flow area of the annular channel. After the liquid medicine flow enters the radial channel, its flow rate is increased for the second time. The inner diameter of the first axial channel can be set to be smaller than the inner diameter of the outer sleeve 1. After the liquid medicine flow enters the first axial channel, its flow rate is increased for the third time. It can be understood that the radial channel can be a through hole penetrating the core rod 2, and the liquid medicine enters the first axial channel through both ends of the through hole.

[0045] In some embodiments, one end of the core rod 2 away from the outer sleeve 1 is provided with a first mounting groove, one end of the nozzle 4 close to the core rod 2 is provided with a second mounting groove, and the swirl member 3 is installed in the first mounting groove and the second mounting groove. The core rod 2 has a cavity inside. The inner diameter of the cavity is between the first mounting groove and the connecting channel 23. The cavity communicates with the first mounting groove and the connecting channel 23. The cavity, the first mounting groove, the second mounting groove, and the conical cavity 41 form a swirl cavity 24 to provide a swirl space for the liquid medicine. Or one end of the core rod 2 away from the outer sleeve 1 is not provided with a first mounting groove, and the swirl member 3 is directly installed at the end of the core rod 2 away from the outer sleeve 1.

[0046] In some embodiments, referring to Figure 4 , the nozzle 4 has a conical cavity 41 and a spray hole 42. The spray hole 42 communicates with the conical cavity 41, and the spray hole 42 is disposed away from the swirl member 3. The diameter of the spray hole 42 of the nozzle is very small, such that the fine liquid droplets in the swirl cavity 24 are accelerated again and ejected out of the nozzle 4 to combine with the external gas to form a spray. The median particle size of the spray is 25 ± 5 microns, and the spray angle is greater than 70°.

[0047] In some embodiments, the atomizing drug delivery device further includes a protective cap 6. The protective cap 6 is sleeved on the outer sleeve 1, the core rod 2, and the nozzle 4. The protective cap 6 is connected to the outer sleeve 1 and the core rod 2 by threads. One side of the protective cap 6 close to the nozzle 4 is provided with a liquid outlet. Specifically, in this embodiment, the protective cap 6 is provided with an internal thread at its end and a limiting portion is provided at its end. When assembling the drug delivery device, first place the protective cap 6 and the swirl member 3 into the protective cap 6 in sequence, then install the core rod 2, tighten the core rod 2 so that the end of the core rod 2 presses the nozzle 4, and finally install the outer sleeve 1. It should be noted that the drainage section 21 is connected with a mounting section 22. The diameter of the mounting section 22 is larger than that of the drainage section 21. The drainage section 21 is installed in the protective cap 6 by threads, which is convenient for disassembly and assembly.

[0048] In some embodiments, sealing rings 61 are provided at the joints where the protective cap 6 is combined with the nozzle 4 and the outer sleeve 1, which play a sealing role to prevent the leakage of the liquid medicine.

[0049] In some embodiments, a handle 7 is sleeved on the outer sleeve 1 to facilitate the operator's hand to hold.

[0050] In some embodiments, an installation part is provided at one end of the outer sleeve 1 having a liquid medicine inlet. The installation part is used to connect to a high-pressure tube 9 through a connector 8 (Luer connector) or directly, to meet different surgical requirements. The other end of the high-pressure tube 9 is connected to a high-pressure syringe. The high-pressure tube 9 is used to transport the liquid medicine into the outer sleeve 1. Except for the high-pressure tube 9, the handle 7 and the sealing ring 61, all components can be made of stainless steel material to prevent rust.

[0051] The atomizing drug delivery device in the embodiments of the present utility model has the following advantages and technical effects:

[0052] 1. The wound is relatively small, a relatively high local drug concentration can be achieved, and the risk of systemic adverse events is relatively low.

[0053] 2. It can relieve pain, ascites and obstructive symptoms, reduce the side effects of chemotherapy, and improve the patient's quality of life.

[0054] 3. Using a natural annular acceleration channel, there is no need for more additional power to pressurize the liquid medicine.

[0055] 4. The structures of the main hole and the tangential hole inside the swirl element are unique, making the conversion of liquid droplets finer.

[0056] 5. The high-pressure tube can be connected at the handle, or a Luer connector can be connected. When needed, the high-pressure tube can be connected to meet different surgical requirements.

[0057] It should be clear that the present utility model is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, the detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present utility model is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications and additions, or change the order between steps after understanding the spirit of the present utility model.

[0058] In the present utility model, the features described and / or illustrated for one embodiment can be used in the same or similar manner in one or more other embodiments, and / or combined with the features of other embodiments or replace the features of other embodiments.

[0059] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the embodiments of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A nebulizer drug delivery device, characterized in that: The atomizing drug delivery device comprises: an outer sleeve (1), a core rod (2), a swirl element (3) and a nozzle (4) which are arranged in sequence; One end of the outer sleeve (1) has a liquid medicine inlet, and the inside of the outer sleeve (1) has a first liquid medicine channel along the extension direction of the outer sleeve (1); The core rod (2) is fixedly arranged at the other end of the outer sleeve (1), and a second liquid medicine channel is provided in the space between the outer surface of the core rod (2) and the inner surface of the outer sleeve (1) and / or in the core rod (2), and the second liquid medicine channel is respectively connected with the first liquid medicine channel and the swirl element (3), and the flow area of ​​the second liquid medicine channel at a set position is set to be smaller than the flow area of ​​the first liquid medicine channel, so that the liquid medicine can be pressurized and accelerated; The swirl component (3) is fixedly arranged at one end of the core rod (2) away from the outer sleeve (1), and the swirl component (3) has a flow hole so that the liquid medicine produces a swirl effect; The spray head (4) is fixedly arranged at one end of the swirl component (3) away from the outer sleeve (1), so that the medicine liquid is sprayed out after passing through the swirl component (3).

2. The atomizer according to claim 1, characterized in that: The flow holes comprise a main hole (31) and a plurality of tangential holes (32); each of the tangential holes (32) is arranged on the outer periphery of the main hole (31) along the same rotation direction; each of the tangential holes (32) is connected to the main hole (31); and the plurality of tangential holes (32) are evenly or unevenly distributed.

3. The atomizer according to claim 1, characterized in that: The second liquid medicine channel comprises an annular channel and a connecting channel (23) which are interconnected; The core rod (2) has a drainage section (21), the drainage section (21) is arranged inside the outer sleeve (1) and the outer diameter of the drainage section (21) is smaller than the inner diameter of the outer sleeve (1), so that the space between the outer wall of the drainage section (21) and the inner wall of the outer sleeve (1) forms the annular channel; The connecting channel (23) comprises a radial channel and a first axial channel arranged inside the core rod (2); at least one end of the radial channel is connected to the annular channel; one end of the first axial channel is connected to the radial channel; and the other end of the first axial channel is connected to the swirl element (3).

4. The atomizer according to claim 1, characterized in that: The second liquid medicine channel comprises a second axial channel; the core rod (2) has a drainage section (21), the drainage section (21) is arranged inside the outer sleeve (1) and the outer diameter of the drainage section (21) is less than or equal to the inner diameter of the outer sleeve (1); the second axial channel is arranged inside the core rod (2), and the two ends of the second axial channel are respectively connected to the first liquid medicine channel and the swirl member (3).

5. The atomizer according to claim 1, characterized in that: A first mounting groove is provided at one end of the core rod (2) away from the outer sleeve (1), a second mounting groove is provided at one end of the nozzle (4) close to the core rod (2), and the swirl element (3) is installed in the first mounting groove and the second mounting groove.

6. The atomizer according to claim 1, characterized in that: The nozzle (4) has a conical cavity (41) and a spray hole (42), wherein the spray hole (42) is connected to the conical cavity (41), and the spray hole (42) is arranged away from the swirl element (3).

7. The atomizing drug delivery device according to any one of claims 1 to 6, characterized in that: The atomizing drug delivery device further comprises a protective cap (6), wherein the protective cap (6) is sleeved on the outer sleeve (1), the core rod (2) and the nozzle (4), and the protective cap (6) is connected to the outer sleeve (1) and the core rod (2) via threads, and a liquid outlet is arranged on a side of the protective cap (6) close to the nozzle (4).

8. The atomizer according to claim 7, characterized in that: A sealing ring (61) is provided at the joint between the protective cap (6), the nozzle (4) and the outer sleeve (1).

9. The atomizing drug delivery device according to claim 7, characterized in that: The outer sleeve (1) is sleeved with a handle (7).

10. The atomizer according to claim 7, characterized in that: The outer sleeve (1) has a mounting portion at one end with a liquid medicine inlet, and the mounting portion is used to connect to a high-pressure pipe (9) through a joint (8) or directly, and the high-pressure pipe (9) is used to transport the liquid medicine into the outer sleeve (1).

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