ONE-WAY RESPIRATORY VALVE AND ANIMAL ASSISTIVE DRUG DELIVERY RESPIRATOR PROVIDED WITH ONE-WAY RESPIRATORY VALVE

A one-way respiratory valve includes a valve body. The valve body is hollow, opposite ends of the valve body are open, a partition plate is provided at one of the opposite ends, and an inhalation hole is formed at the other one of the opposite ends; an exhalation hole is formed on a side wall of the valve body, a second unidirectional guide member is provided at the exhalation hole of the valve body, and the second unidirectional guide member is unidirectionally accessible from an inside of the valve body to an outside of the valve body; and a middle part of the partition plate protrudes towards the inhalation hole to form a first protrusion, a first unidirectional guide member is provided on the first protrusion, and the first unidirectional guide member is unidirectionally accessible from the outside of the valve body to the inside of the valve body.

CROSS REFERENCE TO THE RELATED APPLICATIONS

This application is based upon and claims priority to Chinese Patent Application No. 202110570201.5, filed on May 25, 2021, the entire contents of which are incorporated herein by reference.

TECHNICAL FIELD

This application relates to the field of assistive drug delivery devices, and in particular to a one-way respiratory valve and an animal assistive drug delivery respirator provided with the one-way respiratory valve.

BACKGROUND

An animal assistive drug delivery respirator is specially designed for any animal that has a respiratory tract and needs inhalation drug therapy. The animal assistive drug delivery respirator can store a drug and facilitate the animal to inhale the drug, which is convenient for the animal to accept the drug. After the drug is injected into a drug storage cavity, drug particles reach a drug inhalation cavity through a one-way valve of the respirator with an airflow breathed by an animal as a medium, and then are inhaled by the animal into its respiratory tract.

In the related prior art, a pet assistive drug delivery respirator includes a drug storage cavity and a drug inhalation cavity, where the drug inhalation cavity communicates with the drug storage cavity; a communication portion between the drug inhalation cavity and the drug storage cavity is provided with a wafer one-way valve; an exhalation hole is formed on a side wall of the drug inhalation cavity; and an exhalation one-way valve is provided at an exhaust port. During drug delivery, a drug is first injected into the drug storage cavity; when an animal inhales, the exhalation one-way valve closes the exhalation hole, and the drug enters the drug inhalation cavity from the drug storage cavity through the wafer one-way valve and finally enters a respiratory tract of the animal; and when the animal exhales, the wafer one-way valve closes the communication portion between the drug inhalation cavity and the drug storage cavity, and an airflow is discharged from the exhalation hole.

For the above-mentioned related art, the inventors believe that, after an animal inhales, there is a drug residue in the drug inhalation cavity, and the drug residue is discharged from the exhalation hole when the animal exhales, which reduces the utilization rate of the drug. Thus, it is necessary to improve the drug delivery respirator.

SUMMARY

In order to reduce the residue of a drug in a drug inhalation cavity to increase the utilization rate of the drug, in one aspect, this application provides a one-way respiratory valve.

The one-way respiratory valve provided in this application adopts the following technical solution:

A one-way respiratory valve is provided, including a valve body, where the valve body is hollow, opposite ends of the valve body are open, a partition plate is provided at one of the opposite ends, and an inhalation hole is formed at the other one of the opposite ends; an exhalation hole is formed on a side wall of the valve body, a second unidirectional guide member is provided at the exhalation hole of the valve body, and the second unidirectional guide member is unidirectionally accessible from an inside of the valve body to an outside of the valve body; and a middle part of the partition plate protrudes towards the inhalation hole to form a first protrusion, a first unidirectional guide member is provided on the first protrusion, and the first unidirectional guide member is unidirectionally accessible from the outside of the valve body to the inside of the valve body.

In the above technical solution, the middle part of the partition plate protrudes towards the inside of the wave body to form a first protrusion, and the first unidirectional guide member is provided on the first protrusion. Compared with the wafer one-way valve, the first protrusion reduces both an internal volume of the valve body and a distance between the first unidirectional guide member and the inhalation hole, such that the residue of a drug in the valve body after inhalation is reduced, and thus the waste caused by the discharge of the residual drug through the exhalation hole during exhalation is reduced, which helps to improve the utilization rate of the drug.

Optionally, a cross-sectional area of the valve body may gradually decrease from the partition plate to the inhalation hole.

In the above technical solution, due to a guiding function, an inner wall of the tapered valve body guides an airflow from the first unidirectional guide member to the inhalation hole during inhalation, and guides an airflow from the inhalation hole to the exhalation hole during exhalation, which helps to improve the smoothness of use of the one-way respiratory valve by an animal, and also helps to reduce the residue of a drug in the valve body.

Optionally, the side wall of the valve body may protrude away from the inside of the valve body to form a second protrusion, and the exhalation hole may be located on the second protrusion.

The formation of the exhalation hole directly on the side wall of the valve body is not conducive to the outflow of an airflow during exhalation and is also likely to cause the residue of a drug in the valve body. In the above technical solution, the second protrusion is provided, and the exhalation hole is formed on the second protrusion, which facilitates the outflow of an airflow during exhalation and reduces the residue of a drug in the valve body.

Optionally, the exhalation hole may be located between a bottom and an end of the first protrusion in an axial direction of the valve body.

In the above technical solution, the exhalation hole is located between the first protrusion and the inhalation hole, which facilitates the smooth discharge of an airflow through the exhalation hole during exhalation.

Optionally, a mask may be provided at the inhalation hole outside the valve body.

In the above technical solution, the mask is replaceable and easy to use, which helps to improve the safety, health, and use convenience of the one-way respiratory valve.

Optionally, an avoidance groove may be formed inside the valve body, a plate lug may be provided on the partition plate, and the plate lug may be inserted into the avoidance groove.

In the above technical solution, the plate lug is inserted into the avoidance groove, such that the partition plate is fixed tightly, which reduces the leakage of an airflow through a gap between the partition plate and the valve body and helps to improve the utilization rate of a drug.

In another aspect, this application also provides an animal assistive drug delivery respirator provided with a one-way respiratory valve, where the one-way respiratory valve refers to the one-way respiratory valve described above; a cylinder body is detachably connected to one end of the valve body that is close to the partition plate, the cylinder body is hollow, and the cylinder body communicates with the inside of the valve body; and a cylinder cover is detachably connected to one end of the cylinder body that is away from the valve body, a drug injection hole is formed on the cylinder cover, and the drug injection hole communicates with an inside of the cylinder body.

On the above technical solution, the cylinder body and the cylinder cover are provided on the one-way respiratory valve, such that, during drug delivery for an animal, a drug is first injected into the cylinder body through the drug injection hole and then inhaled into the body through the one-way respiratory valve, which helps to control the dosage and reduce the excessive use of the drug (causing harm to animal health).

Optionally, a locking block may be provided on an outer side wall of the valve body, a locking slot may be formed on an inner wall of the cylinder body, and the locking block may be fitted with the locking slot.

In the above technical solution, the locking block is fitted with the locking slot, such that the cylinder body is tightly fixed to the wave body, which reduces the leakage of an airflow through a gap between the cylinder body and the valve body and helps to improve the utilization rate of a drug.

Optionally, a guiding slope may be formed at an edge of an inner wall of the drug injection hole that is away from the inside of the valve body.

In the above technical solution, the guiding slope is convenient for a user to provide a drug injection device into the drug injection hole, which improves the use convenience of the animal assistive drug delivery respirator provided with a one-way respiratory valve.

In summary, this application at least has the following beneficial effects:

In the present disclosure, the partition plate is provided, the middle part of the partition plate protrudes towards the inside of the wave body to form a first protrusion, and the first unidirectional guide member is provided on the first protrusion. Compared with the wafer one-way valve, the first protrusion reduces both an internal volume of the valve body and a distance between the first unidirectional guide member and the inhalation hole, such that the residue of a drug in the valve body after inhalation is reduced, and thus the waste caused by the discharge of the residual drug through the exhalation hole during exhalation is reduced, which helps to improve the utilization rate of the drug.

In the present disclosure, the cylinder body and the cylinder cover are provided on the one-way respiratory valve, such that, during drug delivery for an animal, a drug is first injected into the cylinder body through the drug injection hole and then inhaled into the body through the one-way respiratory valve, which helps to control the dosage and reduce the excessive use of the drug (causing harm to animal health).

DETAILED DESCRIPTION OF THE EMBODIMENTS

This application will be further described in detail below with reference toFIG.1toFIG.7.

An embodiment of this application discloses a one-way respiratory valve.

As shown inFIG.1andFIG.2, the one-way respiratory valve includes a valve body1, which can be a conical valve body1. The valve body1is hollow, and two ends of the valve body1are open. A partition plate11is detachably fixed at one of the two ends that has a large cross-sectional area, and an inhalation hole12is formed at one of the two ends that has a small cross-sectional area. An exhalation hole13is formed on a side wall of the valve body1, and a second unidirectional guide member131is removably fixed at the exhalation hole13of the valve body1. The second unidirectional guide member131is unidirectionally accessible from an inside of the valve body1to an outside of the valve body1. There are two exhalation holes13in total, and the two exhalation holes13are symmetrically formed on the side wall of the valve body1. A middle part of the partition plate11protrudes towards an inside of the wave body1to form a first protrusion111, and the first unidirectional guide member112is detachably fixed on the first protrusion111. The first unidirectional guide member112is unidirectionally accessible from an end of the valve body1that has a large cross-sectional area to the inhalation hole12.

In use, when an animal inhales, an airflow flows in from the first unidirectional guide member112of the partition plate11and flows out from the inhalation hole12; and when an animal exhales, an airflow flows in from the inhalation hole12and flows out from the exhalation hole13.

As shown inFIG.1andFIG.4, in order to enable smooth outflow of an airflow from the valve body1through the exhalation hole13, a side wall of the valve body1located at the exhalation hole13protrudes towards an outside of the valve body1to form a second protrusion3. The second protrusion3corresponds to the exhalation holes13, and the exhalation hole13is located on a top of the second protrusion3. A shape of the second protrusion3matches a shape of the second unidirectional guide member131, and the exhalation hole13is located between the first unidirectional guide member112and the inhalation hole12.

As shown inFIG.1andFIG.2, in this embodiment, the first unidirectional guide member112and the second unidirectional guide member131both are one-way respiratory plates8. The one-way respiratory plate8is rectangular as a whole, and one end thereof in a length direction is rounded. The one-way respiratory plate8at the first protrusion111is located at a side of a top end of the first protrusion111that is close to the inhalation hole12, and the one-way respiratory plate8at the second protrusion3is located at an outer side of the valve body1. The one-way respiratory plate8can be made of silica gel. When the one-way respiratory plate8is guiding, the one-way respiratory plate8is opened due to the push of an airflow. When the one-way respiratory plate8is not guiding, the one-way respiratory plate8closes a corresponding inhalation hole12or exhalation hole13due to its own elasticity and the air pressure.

As shown inFIG.2andFIG.3, a chuck81is provided on the one-way respiratory plate8, the chuck81has a waist-round cross-section, and a cross-sectional area of an end of the chuck81away from the one-way respiratory plate8is larger than a cross-sectional area of an end of the chuck81close to the one-way respiratory plate8. The chuck81is located at one side of the one-way respiratory plate8in a thickness direction, and is also located at an unrounded end of the one-way respiratory plate8.

As shown inFIG.1andFIG.2, a mounting groove82is formed on the first protrusion111. The mounting groove82penetrates through the partition plate11, a shape of the mounting groove82is similar to a cross-sectional shape of the chuck81, and a cross-sectional area of the mounting groove82is smaller than a cross-sectional area of an end of the chuck81away from the one-way respiratory plate8. The chuck81of the one-way respiratory plate8located at the first protrusion is inserted into the mounting groove82. Two mounting grooves82are also formed respectively on two second protrusions3, which correspond to the two one-way respiratory plates8on the two second protrusions3, respectively. The chucks81on the two one-way respiratory plates8at the two second protrusions3are inserted into corresponding mounting grooves82.

As shown inFIG.1, in order to tightly fix the partition plate11, an avoidance groove21is formed inside the valve body1. A depth direction of the avoidance groove21is perpendicular to an axial direction of the valve body1. The partition plate11is provided with a plate lug2, and the plate lug2is inserted into the avoidance groove21. Two avoidance grooves21are symmetrically formed inside the valve body1, two plate lugs2are provided on the partition plate11, and the plate lugs2are in one-to-one correspondence with the avoidance grooves21.

When an animal inhales a drug from the inhalation hole12, a respiratory tract can be connected or a mask4can be used. In this embodiment, the valve body is provided with a mask4at the inhalation hole, and the mask4is sleeved outside one end of the valve body1close to the inhalation hole12.

An embodiment of this application also discloses an animal assistive drug delivery respirator provided with a one-way respiratory valve.

As shown inFIG.5andFIG.6, the animal assistive drug delivery respirator includes the one-way respiratory valve described above. A cylinder body5is provided at an end of the valve body1close to the partition plate11. The cylinder body5is in a hollow cylinder. An outer diameter of an end of the valve body1close to the cylinder body5is slightly smaller than an inner diameter of an end of the cylinder body5close to the valve body1. The valve body1is inserted into the cylinder body5, and the cylinder body5communicates with the inside of the valve body1. An end of the cylinder body5away from the valve body1is provided with a cylinder cover6. The cylinder cover6can be a rubber cover. The cylinder cover6is coaxially buckled on the cylinder body5. A drug injection hole61is formed on the cylinder cover6, and the drug injection hole61communicates with the inside of the cylinder body5.

In use, during drug delivery for an animal, a drug is first injected into the cylinder body5through the drug injection hole61, and then inhaled into the body through the one-way respiratory valve.

As shown inFIG.6andFIG.7, in order to improve the tightness of the fixation of the cylinder body5to the valve body1, a locking slot7is formed on an inner wall of the cylinder body5close to the valve body1. There can be a plurality of locking slots7. Two locking slots7are preferred in this embodiment, which are oppositely arranged on the inner wall of the cylinder body5. A locking block71is formed on an outer wall of the valve body1close to the cylinder body5. There are two locking blocks71, which are in one-to-one correspondence with the locking slots7. When the valve body1is fixed to the cylinder body5, the locking blocks71are inserted into corresponding locking slots7.

As shown inFIG.5andFIG.6, in order to facilitate the injection of a drug into the cylinder body5by a user, a guiding slope611is formed at the drug injection hole61outside the cylinder cover6and along an edge of an inner wall of the drug injection hole61.

Since the cylinder cover6is a rubber cover, the drug injection hole61is formed by sequentially connecting a plurality of (four inner walls are preferred in this embodiment) inner walls63end-to-end. Repeated plugging and unplugging of a drug injection device at the drug injection hole61is easy to make junctions among the inner walls63of the drug injection hole61cracked, thereby causing damage to the cylinder cover6. Therefore, an anti-cracking slot62is formed at each of the junctions among the inner walls63of the drug injection hole61along an axial direction of the drug injection hole61. The anti-cracking slot62helps to reduce damage to the cylinder cover6.

Implementation principle of this embodiment: During drug delivery for an animal, a worker first injects a drug into the cylinder body5through the drug injection hole61. When the animal inhales, due to the unidirectional guiding of the first unidirectional guide member112and the second unidirectional guide member131, an inhaled airflow drives the drug in the cylinder body5into the valve body1, and then the drug is inhaled by the animal from the inhalation hole12. When the animal exhales, due to the unidirectional guiding of the first unidirectional guide member112and the second unidirectional guide member131, an exhaled airflow is discharged out of the valve body1through the inhalation hole12and the exhalation hole13.

The above are preferred embodiments of this application, but the protection scope of this application is not limited thereto. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of this application shall fall within the protection scope of this application.