CN219681452U - Spraying device - Google Patents

Abstract

A spray device includes a body and a spray head mounted on the body, the spray head including at least one nozzle having an interior passage in communication with an interior space of the body such that fluid in the interior space can flow into the interior passage and be sprayed outwardly from the interior passage. Wherein the spraying device is provided therein with a backflow prevention mechanism arranged to allow fluid having a predetermined pressure to be sprayed outward from the nozzle, but to prevent backflow of the fluid into the nozzle from the outside of the spray head. The spraying device can be conveniently cleaned, can prevent pollution to the spraying device, and has a good spraying effect. In addition, the spray head of the spraying device can also rotate relatively so as to adapt to various human body structures.

Description

Spraying device

Technical Field

The present utility model relates to a device for supplying medicine in the field of medicine, and more particularly, to a spray device capable of supplying medicine to a human body in the form of a medicine mist.

Background

Spray devices are widely used in the medical field, which can deliver drugs to the interior of the human body in the form of a spray, for example, can provide drugs in the form of a spray to the nasal cavity, oral cavity, throat, gums, etc., which can be drugs for treating diseases in the nasal cavity and oral cavity, vaccines, particularly vaccines for respiratory infectious diseases, etc.

In the application process, some problems of the spraying devices used in the current market are found to be solved. First, existing spray devices are not ideal for shape adaptation in the body cavity of the human body. For example, when used to apply a medicament to the oral cavity, the spray head may be affected by tissue in the oral cavity such as the tongue, for example, by the arch of the upper portion of the tongue, causing the mist to sometimes fail to reach the throat. Which may affect the therapeutic or prophylactic effect of the drug. For another example, some drugs are commonly used in the human body parts of the mouth, throat, nasal cavity, etc. However, existing spray devices are typically either nasal spray type spray devices or oral type spray devices, and there are few spray devices commonly used for nasal spray, oral and throat.

Next, when a medicine is applied to the nasal cavity, the oral cavity, or the like using the spray device, the spray head of the spray device contacts the oral cavity or tissues in the nasal cavity. Therefore, from the perspective of sanitation, the spray head needs to be cleaned in time after use so as to prevent bacteria and the like from breeding on the spray device and cause infection to a user of the spray device. In the process of cleaning the spray head, water can flow into the spray device, so that the pollution to the liquid medicine is caused.

In addition, in the conventional spraying device, the pressure inside the spraying device is sometimes insufficient, so that the atomization effect is easily poor, large particles are generated in the medicine mist, and the absorption efficiency of the medicine by a user is affected by the large particles in the medicine mist.

Accordingly, there is a need in the art for further improvements in the construction of spray devices that overcome at least one of the problems with the prior art spray devices described above.

Disclosure of Invention

The present utility model has been made to solve the above-mentioned problems occurring in the prior art. The utility model aims to provide a spraying device with an improved structure, which has better universality and can be suitable for various application occasions such as oral cavities, nasal cavities, throats and the like. In addition, the spraying device is convenient to clean, and pollution to liquid medicine is avoided. The spraying device can also achieve better spraying effect.

The spray device of the present utility model comprises a body and a spray head mounted on the body, the spray head comprising at least one nozzle having an internal passage, the internal passage being in communication with the internal space of the body such that fluid in the internal space can flow into the internal passage and be sprayed outwardly from the internal passage. Wherein the spraying device is provided therein with a backflow prevention mechanism arranged to allow fluid having a predetermined pressure to be sprayed outward from the nozzle, but to prevent backflow of the fluid into the nozzle from the outside of the spray head.

In the spraying device with the above structure, the backflow prevention pre-pressing valve can prevent the cleaning water from flowing into the inside of the spraying head when the spraying head is cleaned, so that the fluid such as the liquid medicine in the spraying device is polluted. In addition, since the fluid needs to be ejected at a predetermined pressure, the atomization ability of the atomizer can be improved.

In a specific structure, the backflow prevention pre-compression valve is an backflow prevention pre-compression valve provided in an inner passage of a nozzle, comprising: a valve seat disposed in the internal passage and having at least one hole formed therein; and the valve member is sleeved on the valve seat and covers the hole.

Further, the valve member is made of an elastic material and is deformable under a predetermined pressure. The elastic material may be, for example, an elastic plastic, a polymeric material, a metal, or the like.

Preferably, the spray head is rotatably connected to the body by a pivotal connection. In this way, the angle of the spray head relative to the body can be adjusted. On the one hand, this adjustment of the angle allows adaptation to different human body structures, and on the other hand, this adjustable angle of the spray head allows adjustment of the spray head to a downward orientation, which reduces the height of the spray device, facilitating storage and transport of the spray device.

In one embodiment, the spray device is a push-type spray device, wherein the body comprises:

a container comprising an interior space;

a pressing portion which is relatively movably mounted on the container and in which a piston rod is connected;

the cylinder is arranged on the container, is communicated with the inner space and extends into the cylinder; and

and an elastic resetting device supported between the container and the pressing portion.

Preferably, the anti-reflux mechanism is disposed on the piston rod.

More specifically, the backflow prevention mechanism includes an elastic skirt having a shape that expands toward the spray head, such that an upper end of the elastic skirt toward the pressing portion has a large diameter and a lower end of the elastic skirt toward the container has a small diameter. The anti-backflow mechanism further comprises a mounting part, wherein the mounting part is connected to the lower end of the elastic skirt part and is matched with the piston rod.

Further, a mounting shaft is provided at an upper end of the pressing portion, the spray head includes a connection port, and the mounting shaft is fitted with the connection port, thereby forming the pivot connection portion.

Preferably, the spray direction of the nozzle of the spray head is at a first angle to the axis of the spraying device. The first angle enables the spray direction of the spray head to coincide with the direction of inward convergence of the two nasal cavities.

Preferably, the nozzle of the spray head comprises a first segment and a second segment, the first segment and the second segment being at a second angle therebetween. This second angle allows the spray head to avoid tissue such as the tongue when spraying with the spray device, thereby adapting to the geometry of a specific part of the human body.

Preferably, the first and second segments are interconnected by a second pivot connection so that the second angle can be adjusted.

In one particular arrangement, the spray head includes two nozzles, and the nozzles are translatable relative to the body to expand or contract the spacing between the nozzles. Thus, the spraying device can adapt to the difference of nostril spacing of different users.

In another aspect of the utility model, a spray device includes a body and a spray head mounted to the body, the spray head including at least one nozzle having an interior passage, the interior passage communicating with an interior space of the body. Wherein the spray head is connected to the body through the first pivot connection portion so that the spray head can rotate relative to the body.

Preferably, the nozzle of the spray head comprises a first segment and a second segment, the first segment and the second segment being angled therebetween.

Further, the first segment and the second segment are connected by a second pivot connection, such that the angle can be adjusted.

Drawings

Embodiments of the present utility model will be more clearly understood from the structure shown in the accompanying drawings, in which:

fig. 1a shows a cross-sectional view of a spray device according to a first embodiment of the utility model, wherein the internal structure of the spray device is more clearly shown.

Fig. 1b shows an enlarged cross-sectional view of the spray head of the spray device of fig. 1 a.

Fig. 2 shows a front view of the spraying device shown in fig. 1 a.

Fig. 3 shows a perspective view of the spraying device shown in fig. 1 a.

Fig. 4 shows a side view of the spray device of fig. 1a, wherein the spray head is shown rotated to an angle of use.

Fig. 5 is another view of the spray device showing the spray head rotated to a downward facing position for storage and transport.

Fig. 6a shows a partial cross-sectional view of the nozzle of the spraying device, wherein the structure of the anti-reflux pre-compression valve provided in the nozzle is shown.

Fig. 6b is an enlarged view of a portion a of fig. 6a, in which a state in which the reverse flow preventing pre-compression valve is opened is shown.

Fig. 7 shows a side view of a spraying device according to a second embodiment of the utility model.

Fig. 8 shows a side view of a spray device according to a third embodiment of the utility model.

Fig. 9a shows a side view of a spraying device according to a fourth embodiment of the utility model.

Fig. 9b shows another side view of the spray device of the fourth embodiment of the utility model, wherein the distance between the two nozzles is increased.

Fig. 10 shows a cross-sectional view of a spraying device according to a fifth embodiment of the utility model.

Fig. 11a shows a cross-sectional view of the anti-reflux mechanism in the spray device shown in fig. 10.

Fig. 11b shows a perspective view of the anti-reflux mechanism in the spray device shown in fig. 10.

Detailed Description

In order to facilitate the understanding of the present utility model, a detailed description of specific embodiments of the spray device of the present utility model will be described below with reference to the accompanying drawings. It is to be understood that the drawings illustrate only the preferred embodiments of the utility model and are not to be considered limiting of the scope of the utility model. Various obvious modifications, variations, equivalent substitutions of the utility model will be apparent to those skilled in the art based on the embodiments shown in the drawings, and the technical features of the different embodiments described below can be arbitrarily combined with each other without contradiction, and these fall within the scope of the utility model.

< first embodiment >

Fig. 1a to 6b show a spray device 100 according to a first embodiment of the utility model. The spraying device 100 has a container 110, and the container 110 may be filled with a chemical solution for spraying. A pressing portion 120 is attached to the container 110, and the pressing portion 120 is movable in the up-down direction with respect to the container 110. A spray head 130 is mounted on the upper end of the pressing portion 120.

In the configuration shown in the figures, the spray head 130 comprises two nozzles 132 (shown more clearly in fig. 1 b) arranged side by side. In this way, the nasal cavity can be sprayed simultaneously to two nostrils at a time without separate spraying. In addition, the dual nozzle 132 is also useful for more efficiently spraying a larger area in the case of spraying the oral cavity.

However, it is within the scope of the present utility model for one skilled in the art that the spray head 130 may include only one nozzle 132.

Preferably, as shown in fig. 1a, the spray direction of the nozzle 132 is at an angle α to the axis X of the spraying device 100, which angle α enables the spray direction of the nozzle 132 to coincide with the usual inward converging direction of the two nasal cavities. In this way, better spraying of the nasal cavity can be facilitated.

Inside the container 110 is mounted a gas cylinder 111, for example, the gas cylinder 111 may be connected at an opening of the container 110 and extend into the interior of the container 110. A suction pipe 112 is connected to the lower end of the cylinder 111, and the suction pipe 112 communicates with the inner space of the container 110.

A piston rod 121 is provided inside the pressing portion 120, the piston rod 121 being extendable into the cylinder 111, and an internal passage of the piston rod 121 communicates with an internal space of the cylinder 111.

An elastic return means 140, such as a coil spring as shown in the drawings, is provided between the container 110 and the pressing portion 120. When the pressing portion 120 is pressed downward (as indicated by an arrow in fig. 2), the volume in the cylinder 111 becomes small, so that the liquid medicine in the cylinder 111 is pressed into the internal passage of the piston rod 121 of the pressing portion 120, flows into the spray head 130, and is then sprayed out in the form of a mist through the nozzle 132. In this process, the elastic restoring means 140 is deformed by pressure, and an elastic restoring force is generated in the elastic restoring means 140. And when the pressing force applied to the pressing part 120 is removed, the pressing part 120 returns to its upward initial position by the elastic force of the elastic restoring means 140. In this process, the volume in the cylinder 111 becomes large, so that the medicine liquid in the container 110 can be sucked into the cylinder 111 via the suction pipe 112 to be sprayed next.

Returning to fig. 1b, it can be seen that two mounting shafts 122 are formed at the upper end of the pressing part 120, and a connection port 131 is formed on the nozzle 132, and the connection port 131 can be engaged with the mounting shaft 122, so that the nozzle 132 can be mounted on the upper end of the pressing part 120. The passage in the nozzle 132 communicates with the internal passage of the piston rod 121 of the pressing portion 120. Also, the connection port 131 and the mounting shaft 122 are connected to each other to form a pivot connection portion 133, thereby allowing the spray head 130 to rotate with respect to the pressing portion 120.

In use, as shown in fig. 4, the spray head 130 may be rotated to a desired angle relative to the axis X of the spray device 100 to accommodate a particular application of the nasal cavity, oral cavity, or throat. Also, this rotation of the spray head 130 allows it to be properly aligned in use when spraying a person without being affected by tissue in the nasal cavity or oral cavity (e.g., tongue).

As shown in fig. 5, when the spraying device 100 is not in use, the spray head 130 may be rotated downwardly to a position substantially parallel to the axis X of the spraying device 100, i.e., with the nozzle 132 facing downwardly. This reduces the height of the spray device 100, facilitating storage and transportation of the spray device 100.

Further, an anti-reflux mechanism may be provided in the spray device 100 to prevent fluid exiting the nozzle from flowing back into the nozzle. As schematically shown in fig. 6a and 6b in an enlarged view, one exemplary structure of the backflow prevention mechanism is a backflow prevention pre-compression valve 150 provided in the nozzle 132, the backflow prevention pre-compression valve 150 being provided to allow the liquid medicine to flow from a passage inside the nozzle 132 to the outside and to be able to prevent the liquid medicine from flowing back into the nozzle 132 from the outside.

In one specific construction shown in the drawings, the anti-reverse flow pre-compression valve 150 includes a valve seat 151, the valve seat 151 being disposed in an internal passage of the spray head 130. The valve seat 151 is provided with a plurality of holes 152, and the chemical liquid and the like can flow out from the inside of the spray head 130 through the holes 152. The valve seat 151 further includes a valve member 153, and the valve member 153 is sleeved on the valve seat 151 and covers the hole 152, thereby preventing the liquid medicine from flowing out of the nozzle 132. The valve member 153 is preferably made of an elastic material, and when the pressure inside the nozzle 132 rises to a predetermined level, the valve member 153 is able to deform under the predetermined level of pressure, exposing the orifice 152, thereby allowing the liquid medicine to flow out, as schematically indicated by the arrow in fig. 6 b.

By providing the backflow prevention pre-pressure valve 150, when the spray head 130 is cleaned, the cleaning water is prevented from flowing into the nozzle 132 to contaminate the chemical solution therein. In addition, the backflow prevention pre-pressure valve 150 can accumulate pressure inside the nozzle 132 before the chemical liquid is ejected from the nozzle 132, thereby improving the atomization effect on the chemical liquid.

< second embodiment >

Fig. 7 shows a spraying device 200 according to a second embodiment of the utility model. The specific structure described above with respect to the first embodiment is also applicable to the second embodiment without contrary description or conflict. The structure of the second embodiment different from the first embodiment will be specifically described below.

Similar to the first embodiment, the spraying device 200 includes a container 210, and a pressing portion 220 is relatively movably provided on the container 210. The spray head 230 is pivotably connected to the upper end of the pressing part 220 by a pivot connection 231. Also included in the spray head 230 is a bend 232 such that the spray head 230 as a whole comprises two segments at an angle β to each other.

The curved form of the spray head 230 is particularly useful for applications in oral, throat spray, which allows the spray head 230 to spray down toward the throat past the high points of the tongue.

< third embodiment >

Fig. 8 shows a spray device 300 according to a third embodiment of the utility model. The specific structures described above with respect to the first and second embodiments are also applicable to the third embodiment without contrary description or conflict. The structure of the third embodiment different from the first and second embodiments will be specifically described below.

The spraying device 300 includes a container 310 and a pressing part 320 movable with respect to the container 310, and the spray head 330 is pivotably connected to an upper end of the pressing part 320 by a first pivot connection 333.

Each nozzle of the spray head 330 includes a first segment 331 and a second segment 332, the first segment 331 and the second segment 332 being relatively pivotally connected together by a second pivot connection 334. Thus, in the third embodiment, an adjustable angle β is formed between the first section 331 and the second section 332.

By making the angle between the first and second segments 331, 332 of the spray head 330 adjustable, the spray device 300 may be better able to adjust to individual differences of the user.

< fourth embodiment >

Fig. 9a and 9b show a spraying device 400 according to a fourth embodiment of the utility model. The specific structures described above with respect to the first to third embodiments are also applicable to the fourth embodiment without contrary description or conflict. The structure of the fourth embodiment different from the first to third embodiments will be specifically described below.

The spraying device 400 includes a container 410 and a pressing part 420 relatively movably mounted on the container 410. The spray head 430 is pivotally connected to the upper end of the pressing part 420, specifically, to a connection shaft 421 at the upper end of the pressing part 420. Also, in the fourth embodiment, the spray head 430 is also translatable on the connection shaft 421 with respect to the pressing portion 420 so as to be able to switch between a smaller spacing W1 between the two nozzles 431 (as in fig. 9 a) or a larger spacing W2 between the two nozzles 431 (as in fig. 9 b).

Accordingly, the spraying device 400 of the fourth embodiment allows the interval between the nozzles 431 to be adjusted according to different nostril intervals of different users, thereby making the spraying device 400 more adaptable.

< fifth embodiment >

Fig. 10 to 11b show a spraying device 500 according to a fifth embodiment of the present utility model. The specific structures described above with respect to the first to fourth embodiments are also applicable to the fifth embodiment without contrary description or conflict. The structure of the fifth embodiment different from the first to fourth embodiments will be specifically described below.

As shown in fig. 10, the spraying apparatus 500 includes a container 510, a pressing part 520 relatively movably mounted on the container 510, and a spraying head 530 mounted on an upper end of the pressing head. A piston rod 521 is provided at the lower side of the pressing head, and a backflow preventing mechanism 550 is connected to the piston rod 521, unlike the arrangement of the backflow preventing mechanism in the internal passage of the spray head in the previous embodiment. In the structure shown in fig. 10, the reverse flow prevention mechanism 550 is located at a connection position between the pressing portion 520 and the piston rod 521.

As shown in fig. 11a and 11b, anti-reflux mechanism 550 includes a resilient skirt 551. The elastic skirt 551 has a diverging shape, specifically, when the anti-reflux mechanism 550 is mounted to the piston rod, the elastic skirt 551 expands toward the spray head 530 so that its upper end 552 has a larger diameter and its lower end 552 has a smaller diameter. Under the elastic action of the elastic skirt 551, the upper end 552 thereof is biased to abut against the inner wall of the portion of the pressing portion 520 connected to the piston rod 521. When the pressure of the fluid from container 510 reaches a predetermined pressure, however, resilient skirt 551 may be deformed to disengage upper end 552 from the inner wall, thereby allowing fluid to flow to spray head 530.

A mounting portion 554 is provided on a lower end 553 of the elastic skirt 551, the mounting portion 554 being capable of being fitted onto an upper end 522 of the piston rod 521, thereby enabling the backflow prevention mechanism 550 to be fixed to the piston rod 521. Wherein the mounting portion 554 is in the shape of a flat plate such that when mated with the upper end 522 of the piston rod 521, the mounting portion 554 does not block the fluid passage within the piston rod 521, thereby allowing fluid to flow through the mounting portion 554 and onto the elastic skirt 551.

The preferred embodiments of the present utility model have been described in detail above. Various obvious modifications, variations, and equivalents will be able to be made on the basis of these embodiments by those skilled in the art.

For example, in the illustrated embodiment, the spray head includes two nozzles spaced apart from one another to enable simultaneous spraying to the nasal cavities of both nostrils. Of course, the spray head may also comprise only one nozzle.

In the described embodiments, a push type spraying device is taken as an example, but it will be clear to a person skilled in the art that the structure of the present utility model is also applicable to other types of spraying devices, such as spraying devices in the form of a syringe, etc. The spray device may include a body and a spray head mounted on the body. For example, in the above-described embodiment of the aerosol apparatus, the body of the aerosol apparatus mainly includes a container and a pressing portion relatively movably mounted on the container, and the aerosol head is connected to a connection shaft at an upper end of the pressing portion. For another example, in a spray device in the form of an injector, the body may include an injector syringe and a plunger movable within the syringe, and the spray head may be mounted on a hub at the forward end of the syringe. The internal passage of the spray head may communicate with the internal space of the body in various ways.

In addition, regarding the structure of the reverse flow prevention pre-compression valve, other known forms of one-way pre-compression valve may be adopted in addition to the specific structure shown in the drawings. In addition, in the back-flow prevention pre-compression valve, the valve member may be made of a flexible or elastic material, for example, may be made of an elastic plastic material or a polymeric material, or may be made of a metal having good elasticity, etc.

In addition, in the embodiments disclosed above, the backflow prevention mechanism is a backflow prevention pre-compression valve provided in the internal passage of the spray head, or an elastic mechanism provided on the piston rod. In addition, it will be appreciated by those skilled in the art that the anti-reflux mechanism may be provided at any suitable location in the fluid path from the interior of the container to the interior passage of the spray head to the nozzle.

Claims (15)

1. A spray device comprising a body and a spray head mounted on the body, the spray head comprising at least one nozzle having an internal passageway which communicates with an internal space of the body such that fluid in the internal space can flow into the internal passageway and be sprayed outwardly from the internal passageway, characterized in that,

the spraying device is provided therein with a backflow prevention mechanism configured to allow fluid having a predetermined pressure to be sprayed outward from the nozzle, but to prevent backflow of the fluid from the outside of the spray head into the nozzle.

2. The spray device of claim 1, wherein the anti-reflux mechanism is an anti-reflux pre-compression valve disposed in the internal passage of the nozzle, the anti-reflux pre-compression valve comprising:

a valve seat disposed in the internal passage and having at least one hole formed therein; and

and the valve member is sleeved on the valve seat and covers the hole.

3. A spray device as claimed in claim 2 wherein the valve member is made of an elastomeric material and is deformable under a predetermined pressure.

4. The spray device of claim 1, wherein the spray head is rotatably connected to the body by a pivot connection.

5. The spray device of claim 1, wherein the spray device is a push-type spray device, wherein the body comprises:

a container comprising an interior space;

a pressing portion which is relatively movably mounted on the container and in which a piston rod is connected;

a cylinder provided on the container and communicating with the inner space, the piston rod extending into the cylinder; and

and an elastic restoring device supported between the container and the pressing portion.

6. The spray device of claim 5, wherein said anti-reflux mechanism is attached to said piston rod.

7. The spray device of claim 6, wherein the anti-reflux mechanism comprises:

an elastic skirt having a shape expanding toward the spray head such that an upper end of the elastic skirt toward the pressing portion has a large diameter and a lower end of the elastic skirt toward the container has a small diameter; and

and the mounting part is connected to the lower end of the elastic skirt part and is matched with the piston rod.

8. The spray device of claim 5, wherein a mounting shaft is provided at an upper end of the pressing portion, the spray head including a connection port, the mounting shaft cooperating with the connection port to form a pivotal connection.

9. The spray device of claim 1 wherein the spray direction of said nozzle of said spray head is at a first angle to the axis of said spray device.

10. The spray device of claim 1, wherein the nozzle of the spray head comprises a first segment and a second segment, the first segment and the second segment being at a second angle therebetween.

11. The spray device of claim 10, wherein said first segment and said second segment are interconnected by a second pivot connection so as to enable adjustment of said second angle.

12. The spray device of claim 1, wherein the spray head comprises two of the nozzles, and the nozzles are translatable relative to the body to expand or contract the spacing between the nozzles.

13. A spray device comprising a body and a spray head mounted on the body, the spray head comprising at least one nozzle having an internal passage, the internal passage being in communication with the interior space of the body, characterized in that,

the spray head is connected to the body by a first pivotal connection such that the spray head is rotatable relative to the body.

14. The spray device of claim 13, wherein the nozzle of the spray head comprises a first segment and a second segment, the first segment and the second segment being angled therebetween.

15. The spray device of claim 14, wherein said first segment and said second segment are connected by a second pivot connection so as to be able to adjust said angle.