Liquid medicine atomizing component
By configuring a sinking groove and an annular flow channel at the bottom of the cavity, the problem of the liquid inlet being exposed when the tilt angle is large in existing atomizers is solved, and efficient utilization of the liquid is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE FIRST MEDICAL CENT CHINESE PLA GENERAL HOSPITAL
- Filing Date
- 2025-04-02
- Publication Date
- 2026-05-12
AI Technical Summary
Existing nebulizers, when the remaining liquid reaches a certain level, have a small tilt angle that exposes the inlet of the fluid flow channel, preventing the liquid from being atomized and resulting in a large amount of liquid remaining.
A sunken trough is configured at the bottom of the cavity, and the liquid inlet of the liquid flow channel is located in the trough. It forms an annular flow channel with the pressure gas pipe through the guide sleeve to ensure that the liquid inlet is always located in the trough and avoids exposure.
Even with a large tilt angle, the medication utilization rate is high and the amount of residual medication is low, thus improving the overall efficiency of medication use.
Smart Images
Figure CN224220526U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of medical instrument field, and especially a kind of liquid medicine atomization component. BACKGROUND
[0002] The atomizer typically used for atomizing liquid medicine (liquid medicine) generally includes: a cavity for containing liquid medicine defined by a housing, a pressure tube extending axially into the cavity and forming a contraction gas outlet hole at the end, a liquid flow channel extending axially from the bottom of the cavity to the end of the pressure tube and forming a liquid inlet at the bottom of the cavity and a liquid outlet on the side of the contraction gas outlet hole, a stop component located in front of the axial direction of the contraction gas outlet hole. In use, the pressure gas in the pressure tube is ejected at high speed from the contraction gas outlet hole, and according to Bernoulli's principle, the pressure near the front of the contraction gas outlet hole is reduced, so that the liquid in the cavity enters the liquid flow channel from the liquid inlet at the bottom of the cavity, and then flows out from the gas outlet of the liquid flow channel located on the side of the contraction gas outlet, and the ejected liquid collides on the stop component to form a large number of liquid droplets with extremely small volume, which is called mist in macroscopic view.
[0003] However, the atomizer in the prior art has the following defects when in use:
[0004] When the liquid in the cavity is reduced to a certain amount, the atomizer only has a small inclination angle (relative to the vertical state), which causes at least part of the liquid inlet of the flow channel to be exposed to the liquid outside, thereby causing the liquid to be unable to be atomized, resulting in a large amount of liquid remaining that cannot be atomized. SUMMARY
[0005] To solve the above technical problems in the prior art, the embodiments of the present utility model provide a liquid medicine atomization component.
[0006] To solve the above technical problems, the embodiments of the present utility model adopt the technical solutions of:
[0007] A liquid medicine atomization component, comprising:
[0008] a housing having an upper end and a lower end in the axial direction, the housing defining a cavity for containing liquid medicine between the upper end and the lower end;
[0009] a pressure tube extending into the cavity from the lower end of the housing, the upper end of the pressure tube forming a contraction gas outlet hole;
[0010] a liquid flow channel extending axially from the bottom of the accommodating cavity to the axial position of the converging air outlet, so that the liquid flow channel has a liquid inlet at the bottom of the accommodating cavity and a liquid outlet at one side of the converging air outlet, under the action of the airflow flowing out of the converging air outlet, the liquid flows into the liquid inlet of the liquid flow channel and flows out of the liquid outlet, and moves upward along the airflow;
[0011] a stop component located above and opposite to the converging air outlet, the stop component atomizes the liquid medicine flowing along with the airflow by stopping the liquid medicine;
[0012] The bottom of the accommodating cavity is provided with a sink groove extending axially downward, and the liquid inlet of the liquid flow channel extends into the sink groove.
[0013] Preferably, the sink groove is an annular groove surrounding the pressure air pipe.
[0014] Preferably, the liquid medicine atomization component further comprises a guide sleeve; wherein:
[0015] The guide sleeve is sleeved outside the pressure air pipe and defines an annular flow channel with the pressure air pipe, the annular flow channel constitutes the liquid flow channel, the lower end of the guide sleeve extends into the sink groove, the lower end port and the upper end port of the guide sleeve define the liquid inlet and the liquid outlet with the pressure air pipe respectively, and the lower end of the guide sleeve has an annular gap with the groove wall of the sink groove.
[0016] Preferably, the upper end port of the guide sleeve is provided with a guide inclined surface for guiding the liquid medicine to flow obliquely to the radial inner side.
[0017] Preferably, a plurality of notches are arranged circumferentially on the end wall of the lower end of the guide sleeve, and the lower end of the guide sleeve abuts against the groove bottom of the sink groove.
[0018] Preferably, the shell defines an ellipsoidal accommodating cavity, and the long axis of the accommodating cavity is axial.
[0019] Preferably, the stop component is configured in a flat column shape, and the lower end surface of the stop component is configured as a tapered surface with the middle part protruding downward.
[0020] Preferably, the lower end surface of the stop component is provided with a plurality of radial extending and circumferentially arranged ridges.
[0021] Preferably, the lower end of the pressure air pipe axially extends out of the shell for communication with the hose of the air supply system.
[0022] Preferably, the stop component is fixed on a retaining portion formed by extending axially from the top of the accommodating cavity.
[0023] Compared with the prior art, the beneficial effects of the liquid medicine atomization component provided by the embodiment of the utility model are:
[0024] Due to the bottom of the cavity being provided with the sunken groove, the liquid inlet of the liquid flow channel is located in the groove, so that even if the atomizer of the application is greatly inclined, the liquid inlet will not be exposed due to the liquid inlet being located in the groove, and the utilization rate of the liquid medicine in the cavity of the atomizer of the application is still high, and the remaining liquid medicine is very little. BRIEF DESCRIPTION OF DRAWINGS
[0025] In the drawings, which are not necessarily drawn to scale, like numerals can describe similar components throughout the several views. Like numerals having different letter suffixes can represent different instances of similar components. The drawings illustrate generally, by way of example, various embodiments of the application and are not intended to limit the application as claimed. The same reference numerals in different drawings can represent the same or similar elements. Such embodiments are examples only, and are not intended to suggest exhaustive or limiting implementations of the present devices or methods.
[0026] Figure 1 The external shape structure schematic diagram of the liquid medicine atomization component provided by the embodiment of the utility model.
[0027] Figure 2 The liquid medicine atomization component provided by the embodiment of the utility model and the cooperation state schematic diagram of the respiratory mask and the cartilage.
[0028] Figure 3 The internal structure schematic diagram of the lower shell of the liquid medicine atomization component.
[0029] Figure 4 The internal structure schematic diagram of the upper shell of the liquid medicine atomization component.
[0030] Figure 5 The three-dimensional structure schematic diagram of the pressure air pipe of the liquid medicine atomization component.
[0031] Figure 6 The three-dimensional sectional view of the liquid medicine atomization component provided by the embodiment of the utility model.
[0032] Figure 7 The main sectional view of the liquid medicine atomization component provided by the embodiment of the utility model.
[0033] Figure 8 The enlarged view of the local A of Figure 7
[0034] In the drawings:
[0035] 100-Atomizing component; 10-Shell; 11-Cavity; 111-Settling tank; 12-Interface; 20-Pressure air tube; 21-Constricted air outlet; 30-Liquid flow channel; 31-Liquid inlet; 32-Liquid outlet; 40-Guide sleeve; 41-Notch; 42-Guide slope; 43-Cage component; 50-Stop component; 51-Ridge; 52-Retaining part; 200-Respiratory mask; 300-Hose. Detailed Implementation
[0036] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0037] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.
[0038] An embodiment of this utility model discloses a liquid medicine atomizing component 100, which is used to atomize liquid medicine and deliver the atomized liquid medicine to the human respiratory system through an attached breathing mask 200.
[0039] like Figures 1 to 8 As shown, the atomizing component 100 includes: a housing 10, a pressure air tube 20, a guide sleeve 40, and a stop component 50.
[0040] The housing 10 has an upper end and a lower end in the axial direction. Between the upper end and the lower end, the housing 10 defines a cavity 11 for containing the liquid medicine to be atomized, such as... Figure 6 and combined Figure 2As shown, the upper end of the housing 10 is provided with an outlet 12, and the breathing mask 200 is attached to the outlet 12. Thus, the atomized drug solution flows through the outlet 12 to the breathing mask 200 and enters the human respiratory system through the breathing mask 200. In some preferred structures, the housing 10 is configured as a split structure, that is, the housing 10 includes an upper housing 10 and a lower housing 10, which are screwed together to form a cavity 11. This allows for convenient injection of drugs into the cavity 11 and cleaning and maintenance of the relevant components in the cavity 11.
[0041] like Figure 3 and combined Figure 6 and Figure 7 As shown, the pressure pipe 20 extends axially from the lower end of the housing 10 into the cavity 11, specifically extending to the upper part of the cavity 11. The upper end of the pressure pipe 20 forms a constricted air outlet 21, which is significantly smaller than the pipe hole of the pressure pipe 20. The lower end of the pressure pipe 20 extends out of the housing 10. A hose 300 of the air supply system, which provides pressurized gas by an air pump, is connected to the lower end of the pressure pipe 20 to provide pressurized gas to the pressure pipe 20. The pressurized gas flows out at high speed through the constricted air outlet 21.
[0042] A recess 111 is provided at the bottom of the cavity 11, which surrounds the periphery of the pressure air pipe 20 and extends axially downward, so that the bottom of the recess 111 is significantly lower than the bottom of the cavity 11.
[0043] like Figures 5 to 8 As shown, the guide sleeve 40 is sleeved outside the pressure air pipe 20, and the upper end of the guide sleeve 40 basically corresponds to the upper end of the pressure air pipe 20. The lower end of the guide sleeve 40 extends into the settling tank 111, so the lower end of the guide sleeve 40 is lower than the bottom of the cavity 11. An annular flow channel is defined between the guide sleeve 40 and the pressure air pipe 20. This annular flow channel serves as a liquid flow channel 30. The liquid flow channel 30 defines an inlet 31 at its lower end and an outlet 32 at its upper end. Furthermore, there is an annular gap between the lower end of the guide sleeve 40 and the wall of the settling tank 111. The liquid medicine inside the cavity 11 enters the liquid flow channel 30 through the annular gap and the inlet 31.
[0044] The stop component 50 is located above the pressure air pipe 20 and the guide sleeve 40. The stop component 50 has a stop surface facing the contraction air outlet 21, and the stop surface is at a certain distance from the contraction air outlet 21.
[0045] When using, such as Figure 7As shown, the gas supply system provides pressurized gas to the pressurized gas tube 20. The pressurized gas is ejected at high speed from the constriction outlet 21 of the pressurized gas tube 20. Based on Bernoulli's principle, a negative pressure is formed near the constriction outlet 21, causing the liquid medicine in the cavity 11 to enter the liquid flow channel 30 through the liquid inlet 31 and flow upward along the liquid flow channel 30 and then flow out from the liquid outlet 32. The outflowing liquid medicine moves with the airflow toward the stop surface of the stop component 50 and then hits the stop surface, causing the liquid medicine to at least partially form a large number of tiny droplets, that is, the liquid medicine is atomized. The atomized liquid medicine flows with the airflow from the interface 12 to the breathing mask 200.
[0046] As the atomization process continues, the amount of liquid in the cavity 11 decreases and the liquid level approaches the bottom of the cavity 11. However, since the bottom of the cavity 11 is provided with a sinking trough 111, and the inlet 31 of the liquid flow channel 30 is located in the sinking trough 111, compared with the atomizers in the prior art, even if the atomizer of this application is tilted significantly, the inlet 31 of the liquid flow channel 30 will not be exposed because it is located in the sinking trough 111. Therefore, even when the atomizer of this application is at a large tilt angle, the utilization rate of the liquid in the cavity 11 is still high, and very little liquid remains.
[0047] In some preferred structures, such as Figure 5 and Figure 7 As shown, the lower end of the guide sleeve 40 has circumferentially arranged notches 41 on its end wall. In this way, even when the lower end of the guide sleeve 40 is against the bottom of the settling tank 111, the liquid medicine can still enter the liquid flow channel 30 through the notches 41, thereby preventing the guide sleeve 40 from keeping the liquid inlet 31 open by suspending it.
[0048] In some preferred structures, such as Figure 4 and Figure 7 As shown, the stop member 50 is configured as a flat cylindrical structure, and the lower end face of the stop member 50 is configured as a conical surface with the center convex downwards. Thus, the un-atomized liquid that impacts the lower end face of the stop member 50 flows towards the center and then falls to the constricted air outlet 21, where it is carried by the airflow and impacts the lower end face of the stop member 50 again, thereby preventing the un-atomized liquid from returning to the cavity 11. In some more preferred structures, the conical surface of the stop member 50 is provided with numerous radially extending and circumferentially arranged ridges 51, which facilitate higher atomization efficiency when the liquid impacts the lower end face.
[0049] In some preferred structures, such as Figure 8 As shown, the upper port of the guide sleeve 40 is provided with a guide slope 42, which guides the liquid medicine to flow out radially inward, thereby improving the mixing effect with the airflow. This allows the liquid medicine and the airflow to impact the stop component 50 more synchronously, which is beneficial to improving the atomization effect.
[0050] In some preferred configurations, the stop member 50 is fixed to the retaining part 52, which extends axially from the top of the cavity 11; the upper part of the guide sleeve 40 is provided with a cage-like member 43, and the retaining part 52 has a positioning step. After the upper housing 10 and the lower housing 10 are fastened together, the upper end of the cage-like member 43 abuts against the positioning step of the retaining part 52, so that the lower end of the guide sleeve 40 abuts against the bottom of the sink 111, thereby giving the guide sleeve 40, the pressure air pipe 20, and the stop member 50 a preset relative positional relationship.
[0051] Furthermore, although exemplary embodiments have been described in this invention, its scope includes any and all embodiments based on this invention that have equivalent elements, modifications, omissions, combinations (e.g., schemes involving intersections of various embodiments), adaptations, or alterations. Elements in the claims will be interpreted broadly based on the language used in the claims and are not limited to the examples described in this specification or during the implementation of this application, which will be interpreted as non-exclusive. Therefore, this specification and examples are intended to be considered illustrative only, and the true scope and spirit are indicated by the following claims and the full scope of their equivalents.
[0052] The above description is intended to be illustrative and not restrictive. For example, the above examples (or one or more of them) can be used in combination with each other. Other embodiments can be used by those skilled in the art when reading the above description. Furthermore, in the above detailed description, various features may be grouped together to simplify the invention. This should not be construed as an intention that a disclosed feature not claimed is necessary for any claim. Rather, the subject matter of the invention may be less than all the features of a particular disclosed embodiment. Thus, the following claims are incorporated herein by reference as examples or embodiments, wherein each claim is an independent, separate embodiment, and these embodiments are contemplated to be combined with each other in various combinations or arrangements. The scope of the invention should be determined by reference to the appended claims and the full scope of their equivalents.
[0053] The above embodiments are merely exemplary embodiments of this utility model and are not intended to limit this utility model. The scope of protection of this utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this utility model within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this utility model.
Claims
1. A liquid medicine atomizing component, characterized in that, include: A housing having an axially extending upper end and a lower end, the housing defining a cavity between the upper end and the lower end for containing a liquid medicine; A pressure air tube extends from the lower end of the housing into the cavity, and a constriction outlet is formed at the upper end of the pressure air tube. A liquid flow channel extends axially from the bottom of the cavity to the axial position of the constricted vent hole. Thus, the liquid flow channel has an inlet at the bottom of the cavity and an outlet on one side of the constricted vent hole. Under the action of the airflow from the constricted vent hole, the liquid medicine flows in from the inlet of the liquid flow channel and flows out from the outlet, and moves upward with the airflow. A stop component is located above and opposite the contracted air outlet. The stop component stops the liquid medicine flowing with the airflow, thus atomizing the liquid medicine. The bottom of the cavity is provided with an axially downward extending trough, and the inlet of the liquid flow channel extends into the trough.
2. The liquid atomizing component according to claim 1, characterized in that, The settling trough is an annular groove surrounding the pressure gas pipe.
3. The liquid atomizing component according to claim 2, characterized in that, The liquid atomizing component further includes a guide sleeve; wherein: The guide sleeve is fitted over the pressure pipe and defines an annular flow channel with the pressure pipe. The annular flow channel constitutes the liquid flow channel. The lower end of the guide sleeve extends into the settling tank. The lower and upper ports of the guide sleeve and the pressure pipe define the liquid inlet and the liquid outlet, respectively. The lower end of the guide sleeve has an annular gap with the wall of the settling tank.
4. The liquid atomizing component according to claim 3, characterized in that, The upper port of the guide sleeve is configured with a guide slope to guide the liquid medicine to flow out radially inward at an angle.
5. The liquid atomizing component according to claim 3, characterized in that, The lower end of the guide sleeve has multiple circumferentially arranged notches on its end wall, and the lower end of the guide sleeve abuts against the bottom of the settling tank.
6. The liquid atomizing component according to claim 1, characterized in that, The shell defines an ellipsoidal cavity, and the major axis of the cavity is axial.
7. The liquid atomizing component according to claim 1, characterized in that, The stop component is configured as a flat column, and the lower end face of the stop component is configured as a conical surface with the center convex downward.
8. The liquid atomizing component according to claim 7, characterized in that, The lower end face of the stop component is provided with multiple ridges that extend radially and are arranged circumferentially.
9. The liquid atomizing component according to claim 1, characterized in that, The lower end of the pressure gas tube shown extends axially out of the housing for connection with the gas supply system hose.
10. The liquid atomizing component according to claim 1, characterized in that, The stop member is fixed to the retaining part, which extends axially from the top of the cavity.