Animal administration mask

Abstract

The invention provides an animal administration mask which comprises a variable-diameter sleeve which comprises a straight cylinder part and a conical cylinder part, the small-diameter end of the conical cylinder part is connected with the near end of the straight cylinder part, and a first flange is arranged on the periphery of the variable-diameter sleeve; the first conical cylinder is nested on the periphery of the conical cylinder part in a sliding manner, and the far end side of the first conical cylinder is provided with a second flange; the first straight cylinder is nested in an inner cavity of the straight cylinder part in a sliding manner, and the far end side of the first straight cylinder is provided with a third flange; the medicine tank is provided with a medicine spraying cylinder communicated with the first straight cylinder; the first motor comprises a stator and a rotor, the stator is fixedly connected with the first flange, the far end of the rotor is connected with the third flange, the near end of the rotor is connected with the second flange, and the first motor is configured to drive the first conical cylinder and the first straight cylinder to do synchronous and reverse telescopic motion. The administration mask is suitable for animals of different body types and types, and meanwhile, the medicine can be fully atomized to be absorbed by the lungs more easily, so that the medicine absorption efficiency is improved, and the treatment effect is improved.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and in particular to an animal drug delivery mask. Background Technology

[0002] With the rapid development of the animal medical industry, the incidence of respiratory diseases in dogs, cats, horses, zoo animals and laboratory animals has been increasing year by year. Nebulized inhalation therapy has become an important drug administration method in veterinary clinics due to its advantages such as direct drug delivery to the lesion, rapid onset of action and few systemic side effects.

[0003] Currently available animal drug delivery masks are typically designed for a single species or even a single breed (e.g., only suitable for small to medium-sized dogs weighing 10-15kg). Due to the lack of an adjustable, snug fit and seal, animals with different craniofacial features (e.g., brachycephalic dogs and cats versus proboscis dogs and horses) and different body sizes (e.g., a 1kg cat versus a 50kg dog) cannot use the same device. Furthermore, during use, atomized particles (especially effective particles with a diameter of 1-5μm) condense and settle or agglomerate before reaching the animal's mouth and nose. Experimental data shows that the actual lung deposition rate of traditional masks is generally lower than 15%-20%, with a large number of insufficiently atomized droplets (particle size >10μm) adhering directly to facial hair or the front of the mouth, resulting in drug waste and potentially causing local skin irritation. Summary of the Invention

[0004] Based on this, it is necessary to address the above-mentioned problems by providing an animal drug delivery mask. This mask can be used to evenly spray drugs onto animals of different sizes, while ensuring that the drug is fully atomized and easily absorbed by the animal before entering its mouth and nose. The mask includes: a variable-diameter sleeve comprising a straight cylindrical portion and a conical cylindrical portion, the smaller diameter end of the conical portion being connected to the proximal end of the straight cylindrical portion, and a first flange on the outer periphery of the variable-diameter sleeve; a first conical cylinder slidably nested within the outer periphery of the conical portion, and a second flange on the distal end of the first conical cylinder; a first straight cylinder slidably nested within the inner cavity of the straight cylindrical portion, and a third flange on the distal end of the first straight cylinder; a drug canister having a spray nozzle communicating with the first straight cylinder; and a first motor comprising a stator and a mover, the stator being fixedly connected to the first flange, the distal end of the mover being connected to the third flange, and the proximal end being connected to the second flange. The first motor is configured to drive the first conical cylinder and the first straight cylinder to perform synchronous and opposite telescopic movements.

[0005] According to one embodiment of the present invention, the motor is a linear motor, and the two ends of the mover are fixedly connected to the second flange and the third flange, respectively.

[0006] According to one embodiment of the present invention, it further includes at least one first connecting rod, which is circumferentially spaced from the first motor, and the first connecting rod passes through the third flange, the first flange and the second flange in sequence and is slidably connected to them.

[0007] According to one embodiment of the present invention, the first motor is a rotary motor, the outer periphery of the mover has a transmission thread, and the mover is threadedly driven connected to the second flange and the third flange.

[0008] According to one embodiment of the present invention, the proximal outer periphery of the conical portion has an outer flange, and the proximal inner wall of the first conical portion has an inner flange that can abut against the distal end of the outer flange.

[0009] According to one embodiment of the present invention, the device further includes a second cone, a second straight cylinder, and a second motor. The second cone is slidably nested around the outer periphery of the first cone and has a fourth flange on its proximal side. The second straight cylinder is slidably nested inside the cavity of the first straight cylinder and has a fifth flange on its distal side. The stator of the second motor is fixedly connected to the second flange, and the distal end of the mover is connected to the fifth flange and the proximal end is connected to the fourth flange. The second motor is configured to drive the second cone and the second straight cylinder to perform synchronous and opposite telescopic movements.

[0010] According to one embodiment of the present invention, it further includes at least one second connecting rod, which is circumferentially spaced from the second motor, and the second connecting rod passes through the fifth flange, the second flange and the fourth flange in sequence and is slidably connected to them.

[0011] According to one embodiment of the present invention, the inner wall of the second straight cylinder is provided with a spiral groove extending along the axial direction.

[0012] According to one embodiment of the present invention, at least one through hole is provided on the outer periphery of the distal side of the second straight cylinder, and the through hole is located on the proximal side of the fifth flange.

[0013] According to one embodiment of the present invention, a resilient sealing sleeve is further included, one end of which is sealed to the inner wall of the conical portion and the other end of which is sealed to the inner wall of the second conical cylinder. The technical solution of the present invention has the following beneficial effects: The drug delivery mask in this application can adapt to animals of different sizes and species, and ensure that the drug is fully atomized when it reaches the animal's mouth and nose so that it can be more easily absorbed by the lungs, thereby improving the efficiency of drug absorption and the therapeutic effect. Attached Figure Description

[0014] Figure 1 This is an overall structural diagram of the animal drug delivery mask in the first embodiment; Figure 2 for Figure 1 Enlarged view of section A in the image; Figure 3 This is a three-dimensional structural diagram of the variable diameter sleeve in the first embodiment; Figure 4 This is a cross-sectional view of the variable diameter sleeve in the first embodiment; Figure 5 This is a three-dimensional structural diagram of the first conical cylinder in the first embodiment; Figure 6 for Figure 1 Enlarged view of section B in the image; Figure 7-8 This is a three-dimensional structural diagram of the second straight cylinder in the first embodiment; Figure 9 This is a cross-sectional view of the second straight cylinder in the first embodiment; Figure 10 This is an overall structural diagram of the animal drug delivery mask in the second embodiment. Detailed Implementation

[0015] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0016] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element present. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element present. The terms "upper," "lower," "left," "right," and similar expressions used to indicate orientation are for illustrative purposes only and do not represent the only possible implementation.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0018] It should be noted that, in this application, for animal-use equipment, the end that is closer to the animal during use is called the "proximal end," and the end that is farther from the animal is called the "distal end." Based on this principle, the "proximal end" and "distal end" of any component of the conveying system are defined; "radial" or "lateral" refers to the direction perpendicular to the axial direction.

[0019] First Embodiment See Figure 1 As shown, this embodiment relates to an animal drug delivery mask 100, including a variable-diameter sleeve 10, a first conical cylinder 20, a second conical cylinder 30, a first straight cylinder 40, a second straight cylinder 50, a first motor 80, a second motor 70, and a drug container 60. The variable-diameter sleeve 10 has a straight cylinder portion 12 and a conical cylinder portion 11, with the smaller diameter end of the conical cylinder portion 11 connected to the proximal end of the straight cylinder portion 12. The drug container 60 has a receiving portion 61 and communicates with the second straight cylinder 50 to deliver the drug in the receiving portion 61 into the inner cavity of the second straight cylinder 50. One end of an elastic sealing sleeve 93 is sealed to the inner wall of the conical cylinder portion 11, and the other end is sealed to the inner wall of the first conical cylinder 30, thereby ensuring that the conical cylinder portion 11, the first conical cylinder 20, and the first conical cylinder 30 maintain the sealing performance of their formed cavities during movement. As the second cone moves, the elastic sealing sleeve 93 also folds in the opposite direction to maintain the seal inside the cone, thereby maintaining the circumferential sealing performance of the cone and the smooth axial movement of the drug. Alternatively, in other embodiments, the elastic sealing sleeve can also be configured as a retractable bellows structure.

[0020] See Figure 2 As shown, the drug canister 60 has a spray nozzle 62 communicating with the receiving part 61. The spray nozzle 62 is detachably inserted into the second straight cylinder 50, thereby achieving communication between the receiving part 61 and the inner cavity of the second straight cylinder 50. The drug sprayed from the drug canister 60 can be in the form of dry powder, aerosol, or liquid spray. When the animal breathes, the drug is inhaled into one (or both) nostrils, or into the mouth, and then into the lungs or nasal passages. The drug can be any pharmaceutical preparation that can be advantageously administered to the animal's lungs or nasal passages to treat or alleviate related diseases or symptoms. Typical diseases include COPD, asthma, allergies, etc. Suitable drugs include agonists or antagonists, steroids such as beclomethasone, fluticasone, or budesonide, anticholinergics such as ipratropium bromide, etc.

[0021] See Figure 3-4The structure of the reducing sleeve 10 in this embodiment will be described below. The reducing sleeve 10 has a straight cylindrical portion 12 on one side and a tapered cylindrical portion 11 on the other side, forming a combination of a cylindrical sleeve and a tapered sleeve. The smaller diameter end of the tapered cylindrical portion 11 is connected to the straight cylindrical portion 12. A first flange 13 is located on the outer periphery of the reducing sleeve 10. The first flange 13 is disposed at the connection between the tapered cylindrical portion 11 and the straight cylindrical portion 12, i.e., the tapered cylindrical portion 11 and the straight cylindrical portion 12 are connected through the first flange 13. Alternatively, the first flange 13 can be disposed in other locations, such as on the outer periphery of the straight cylindrical portion 12 or the outer periphery of the tapered cylindrical portion 11. The first flange 13 also has a plurality of first through holes 14, which are spaced apart circumferentially. In addition, a constricted portion 17 extending inward (near the axial direction) is provided at the free end of the straight cylinder portion 12, and an outwardly extending flange 15 extending outward (away from the axial direction) is provided at the free end of the tapered cylinder portion 11. A limiting protrusion 16 is provided on the inner wall of the variable diameter sleeve 10 at the connection between the straight cylinder portion 12 and the tapered cylinder portion 11. In this embodiment, the limiting protrusion 16 is an annular protrusion and is radially aligned with the first flange 13. In this embodiment, by providing the constricted portion 17 and the limiting protrusion 16 at both ends of the straight cylinder portion 12, the sliding stroke of the first straight cylinder 40, which is slidably nested in the straight cylinder portion 12, is limited, preventing the first straight cylinder 40 from detaching from the straight cylinder portion 12 or from jamming during sliding. By providing the outer flange 15 on the proximal outer periphery of the tapered cylinder portion 11, the first tapered cylinder 20 is limited, preventing the first tapered cylinder 20 from detaching from the tapered cylinder portion 11 during sliding.

[0022] See also Figure 1 As shown, in this embodiment, the first motor 80 is a linear motor, including a stator 81 and a mover 82. The mover 82 is the motor shaft, which passes through the stator 81 and extends from both ends of the stator 81. When energized, the stator 81 drives the motor shaft to move linearly along the axial direction through the action of magnetic force. The stator 81 is fixedly embedded in the first through hole 14, thereby realizing the fixed connection between the stator 81 and the first flange 13.

[0023] See Figure 1 , 5As shown in Figure 6, the structure of the first conical cylinder 20 is described. The first conical cylinder 20 includes a first conical sleeve 21 and second flanges 22 and second outer flanges 23 disposed at both ends of the first conical sleeve 21. The second flanges 22 are provided with a plurality of second through holes 24, all penetrating the second flanges 22 and spaced apart circumferentially and radially. For example, there are six second through holes 24, with three holes spaced circumferentially and two holes spaced radially apart. The proximal inner wall of the first conical cylinder 20 is provided with a first inner flange 221 that mates with the first outer flange 15 of the conical cylinder portion 11. When the first conical cylinder 20 slides to its limit position relative to the conical cylinder portion 11 along its proximal end, the proximal end of the first inner flange 221 abuts against the distal end of the first outer flange 15, limiting the first conical cylinder 20 and preventing it from continuing to move proximally and disengaging from the conical cylinder portion 11.

[0024] Referring to Figure 7-9, the structure of the second straight cylinder 50 is described. The second straight cylinder 50 includes a second cylindrical sleeve 51, fifth flanges 52 disposed at both ends of the second cylindrical sleeve 51, and a second outer flange 53. The fifth flanges 52 are provided with a plurality of third through holes 54, which are spaced circumferentially on the fifth flanges 52. See also... Figure 8 As shown, the second cylindrical sleeve 51 extends axially from one side of the fifth flange 52 to the other, so that the distal end of the second cylindrical sleeve 51 protrudes from the end face of the fifth flange 52 to facilitate communication with the spraying cartridge 62. A spiral groove 54 extending axially is also provided on the inner wall of the second cylindrical sleeve 51, extending axially from the proximal end to the distal end of the second cylindrical sleeve 51.

[0025] See also Figure 1 The structure of the first straight cylinder 40 will be described below. The first straight cylinder 40 includes a first cylindrical sleeve 41, a third flange 42 disposed at the distal end of the first cylindrical sleeve 41, and an end flange 43 disposed at the proximal end. The end flange 43 extends radially, with a portion extending inward to form an inner flange structure and a portion extending outward to form an outer flange structure. A through hole (not shown in the figure) is also provided on the third flange 42. The first straight cylinder 40 is nested between the straight cylinder portion 12 and the second straight cylinder 50. The outer flange structure can abut against the limiting protrusion 16 of the reducing sleeve 10 to limit the sliding stroke of the first straight cylinder 40 between the straight cylinder portions 12, while the inner flange structure can abut against the second outer flange 53 of the second straight cylinder 50 to limit the stroke of the second straight cylinder 50 in the first straight cylinder 40.

[0026] See also Figure 1 Combination Figure 2-9As shown, the structure of the drug delivery mask 100 in this embodiment will be described again. The stator 81 of the first motor 80 is fixedly embedded in the first through hole 14 of the first flange 13, thereby achieving a fixed connection between the stator 81 and the first flange 13. Its mover 82 extends distally to connect with the third flange 42 and extends proximally to connect with the second flange 22. In this embodiment, the mover 82, which is a shaft structure, has threads at both ends. On one hand, the mover 82 passes distally through the third flange 42 and is fixedly connected to it. For example, two first nuts 95 (the two first nuts 95 are located on both sides of the third flange 42 and are threadedly connected to the mover 82, and the two nuts 95 clamp the third flange 42 from both sides) can be used to achieve a fixed connection between the mover 82 and the third flange 42. On the other hand, the mover 82 passes proximally through the second flange 22 and is fixedly connected to the second flange 22 by the two nuts 95. In other embodiments, the mover 82 can also be fixedly connected to the second flange 22 and the third flange 42 by welding or bonding. In addition, to maintain force balance when the first motor 70 drives the first straight cylinder 40 and the first conical cylinder 20, this embodiment also provides multiple first connecting rods 91. One end of the first connecting rod 91 has a nut 911 and the other end has threads. The first connecting rod 91 passes through the third flange 42, the first through hole 14 of the first flange 13, and the second through hole 22 of the second flange 20 in sequence from the far end to the near end, and then connects to the first nut 95. The first flange 13, the second flange 22, and the third flange 42 are all slidably connected to the first connecting rod 91. The two ends of the first connecting rod 91 are limited by the nuts 921 and the first nuts 95 to prevent the flanges from sliding beyond their limit positions and disengaging from the first connecting rod 91.

[0027] The stator 71 of the second motor 70 is fixedly embedded in the second through hole 22 of the second flange 22, thereby achieving a fixed connection between the stator 71 and the second flange 22. Its mover 72 extends distally to connect with the fifth flange 52 and proximally to connect with the fourth flange 32. In this embodiment, both ends of the axially oriented mover 72 are threaded. On one hand, the mover 72 passes distally through the fifth flange 52 and is fixedly connected to it. For example, two second nuts 94 can be used to achieve a fixed connection between the mover 72 and the fifth flange 52. On the other hand, the mover 72 passes proximally through the fourth flange 32 and is also fixedly connected to the fourth flange 32 by two second nuts 94. In other embodiments, welding or bonding can also be used to achieve a fixed connection between the mover 72 and the fifth flange 52 and the fourth flange 32. Furthermore, in order to maintain force balance when the second motor 70 drives the second straight cylinder 50 and the first tapered cylinder 30, multiple second connecting rods 92 are also provided in this embodiment. The second connecting rod 92 has a nut 921 at one end and a thread at the other end. The second connecting rod 92 passes sequentially from the distal end to the proximal end through the fifth flange 52, the second through hole 24 of the second flange 22, and the fourth flange 32 before connecting to the second nut 94. The fifth flange 52, the second flange 22, and the fourth flange 32 are all slidably connected to the second connecting rod 92. The two ends of the second connecting rod 92 are limited by the nut 921 and the second nut 94 to prevent the flanges from sliding beyond their limit positions and disengaging from the second connecting rod 92.

[0028] The minimum diameters of the conical section 11, the first conical section 20, and the third conical section 30 increase sequentially, and they are nested together to form a telescopic conical assembly. The conical assembly can be extended or shortened when the conical section 11, the first conical section 20, and the second conical section 30 move relative to each other axially. Similarly, the diameters of the straight section 12, the first straight section 40, and the second straight section 50 also increase sequentially and are nested together, with the straight section nested within the first straight section 40, and the first straight section 40 nested within the second straight section 50. This creates a telescopic straight assembly. The straight assembly can be extended or shortened when the straight section, the first straight section 40, and the second straight section 50 move relative to each other axially. Both the first motor 80 and the second motor can drive the extension or shortening of the conical assembly and the straight assembly.

[0029] The first motor 80 is configured to drive the first conical cylinder 20 and the first straight cylinder 40 to perform synchronous and opposite telescopic movements. Specifically, when the first motor 80 drives its mover 82 to move distally, the mover 82 pushes the first straight cylinder 40 to move distally relative to the straight cylinder portion 12, thereby elongating the straight cylinder assembly. Simultaneously, the mover 82 pulls the first conical cylinder 20 to move distally relative to the conical cylinder portion 12, thereby shortening the conical cylinder assembly. When the first motor 80 drives the mover 82 to move proximally, the straight cylinder assembly shortens and the conical cylinder assembly lengthens. Since the mover 82 is fixedly connected to both the first straight cylinder 40 and the first conical cylinder 20, under the drive of the first motor 80, the moving distance of the first conical cylinder 20 is equal to the moving distance of the first straight cylinder 40, thus ensuring that the distance by which the straight cylinder assembly shortens or lengthens is equal to the distance by which the conical cylinder assembly lengthens or shortens, thereby maintaining the sum of their lengths.

[0030] Similarly, the second motor 70 is configured to drive the second cone 30 and the second straight cylinder 50 to perform synchronous and opposite telescopic movements. Specifically, when the second motor 70 drives its mover 72 to move distally, the mover 72 pushes the second straight cylinder 50 distally relative to the first straight cylinder 40, causing the straight cylinder assembly to elongate. Simultaneously, the mover 22 pulls the second cone 30 distally relative to the first cone 20, causing the cone assembly to shorten. When the second motor 70 drives its mover 22 proximally, the straight cylinder assembly shortens and the cone assembly lengthens. Since the mover 72 is fixedly connected to both the second straight cylinder 50 and the first cone 30, under the drive of the second motor 70, the distance the first cone 30 moves is equal to the distance the second straight cylinder 50 moves, thus ensuring that the distance the straight cylinder assembly shortens or lengthens is equal to the distance the cone assembly lengthens or lengthens, thereby maintaining their combined length.

[0031] In practical use, the cone assembly of the drug delivery mask 100 in this embodiment is positioned and fixed on the animal's face, so that the animal's mouth and / or nose are within the inner cavity of the cone assembly. The drug sprayed from the drug canister 60 passes through the cavity of the straight cylinder assembly and continues to move along the cone assembly to reach the animal's mouth and nose, where it is absorbed by the animal's lungs. The cone assembly in this embodiment is made of a flexible material with a certain degree of deformability, facilitating deformation to fit well with the animal's face, and is coated internally with a PTFE coating for easy subsequent cleaning.

[0032] The drug delivery mask 100 of this embodiment can adapt to animals of different species and sizes to ensure a good fit to the animal's face. It can also ensure that the drug can be fully mixed with the air in the cavity of the drug delivery mask 100 to achieve good atomization, so that it is easier for the animal to inhale and absorb it.

[0033] On the one hand, the length and opening (referring to the size of the proximal opening) of the conical assembly can be adjusted by the first motor 80 and the second motor 70, so that the drug administration mask 100 can be used for animals of different body size and facial structure. Conical assemblies of different lengths can adapt to the faces of animals of different sizes and shapes, maintaining a good fit between the drug administration mask 100 and the faces of animals of different body size and species. Thus, one set of drug administration mask 100 can be used for different animals.

[0034] On the other hand, since the overall length of the straight cylinder assembly and the conical assembly remains unchanged under the drive of the first motor 80 or the second motor 70, the drug sprayed from the drug canister 60 must pass through a cavity of constant length to be fully mixed with the air inside the cavity and atomized. This embodiment increases the distance the sprayed drug travels within the air-filled cavity, allowing the drug to be fully mixed with the air and atomized, thus making the drug easier for the animal's lungs to absorb. Lighter, more atomized drug particles can move more easily through the airways between the user's mouth, nose, and lungs, thus reaching the animal's lungs more easily. For example, when the animal's face is small and the length of the conical assembly is shortened by the motor, if the drug is sprayed directly from the narrow end of the conical assembly, the drug will reach the animal's face after a short distance. Incompletely atomized drug particles will collide with the mouth and nose and be adsorbed onto their surfaces, failing to reach the lungs. Therefore, in this embodiment, by setting a straight cylinder component that is linked to the cone component, the straight cylinder component extends while the cone component shortens, thus keeping the total length unchanged. This ensures that the sprayed drug particles must pass through a cavity of a certain length and be fully atomized before reaching the animal's mouth and nose, making them easier for the animal's lungs to absorb.

[0035] Finally, see Figure 1 It is known that when the conical assembly extends to its longest length, the straight assembly shortens to its shortest length. Therefore, it can be ensured that the overall length of the animal drug delivery mask 100 in this embodiment is within a suitable range, making it convenient for users to carry and store.

[0036] In addition, to further improve the nebulization effect of the drug, see [link to relevant documentation]. Figure 1 As shown, at least one through hole 511 is provided along the outer periphery of the second cylindrical sleeve 51 at the distal end of the second straight cylinder 50, and the through hole 511 is located at the proximal end of the fifth flange 52. During use, air enters the second cylindrical sleeve 51 along with the drug injection and the animal's respiration, thus allowing more air to mix with the drug and enhancing the drug atomization effect. In addition, the presence of the spiral groove 54 on the inner wall of the second straight cylinder 50 causes the drug and air entering the cavity of the second straight cylinder 50 to rotate along the spiral groove during movement, making the drug travel a longer distance during the passage of the second straight cylinder 50 and mix more thoroughly with the air during rotation, thereby improving the atomization effect.

[0037] Second Embodiment The animal drug delivery mask in this embodiment is basically the same as that in the first embodiment. However, unlike the drug delivery mask in the first embodiment which uses a linear motor, the drug delivery mask in this embodiment uses a rotary motor.

[0038] See Figure 10 As shown, in this embodiment, the first motor 80a and the second motor 70a in the animal drug delivery mask 100a are both rotary motors, and their moving parts are threaded rods with transmission threads on their outer surfaces. Specifically, the stator 81a of the first motor 80a is fixedly connected to the first flange 13, while its moving parts are threadedly driven to the second flange 22 and the third flange 42, respectively. Similarly, the stator 71a of the second motor 70a is fixedly connected to the second flange 22, while its moving part 72a is threadedly driven to the fifth flange 52 and the fourth flange 32, respectively.

[0039] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. The scope of protection of this patent should be determined by the appended claims.

Claims

1. An animal administration mask, characterized in that, The application relates to a variable-diameter sleeve, a first cone, a first straight cylinder, a medicine tank, a first motor and a first connecting rod. The variable-diameter sleeve comprises a straight cylinder part and a tapered cylinder part, the small-diameter end of the tapered cylinder part is connected with the proximal end of the straight cylinder part, and the outer periphery of the variable-diameter sleeve is provided with a first flange. The first cone is slidably nested on the outer periphery of the tapered cylinder part, and the distal end side of the first cone is provided with a second flange. The first straight cylinder is slidably nested in the inner cavity of the straight cylinder part, and the distal end side of the first straight cylinder is provided with a third flange. The medicine tank is provided with a medicine spraying cylinder which is communicated with the first straight cylinder. The first motor comprises a stator and a rotor, the stator is fixedly connected with the first flange, the distal end of the rotor is connected with the third flange, and the proximal end is connected with the second flange, and the first motor is configured to drive the first cone and the first straight cylinder to synchronously and reversely stretch and contract.

2. The animal administration mask of claim 1, wherein, The motor is a linear motor, and the two ends of the rotor are fixedly connected with the second flange and the third flange respectively.

3. The animal administration mask of claim 1, wherein, At least one first connecting rod is further arranged in a circumferential direction of the first motor, the first connecting rod passes through and is slidably connected with the third flange, the first flange and the second flange in sequence.

4. The animal administration mask of claim 3, wherein, The first motor is a rotary motor, the outer periphery of the rotor is provided with a transmission thread, and the rotor is threadedly and drivably connected with the second flange and the third flange.

5. The animal administration mask of claim 1, wherein, The proximal end of the outer periphery of the tapered cylinder part is provided with a first outer flange, and the proximal end inner wall of the first cone is provided with a first inner flange which can abut against the distal end of the first outer flange.

6. The animal administration mask of claim 1, wherein, The application further comprises a second cone, a second straight cylinder and a second motor, the second cone is slidably nested on the outer periphery of the first cone and is provided with a fourth flange on the proximal end side, the second straight cylinder is slidably nested in the inner cavity of the first straight cylinder and is provided with a fifth flange on the distal side, the stator of the second motor is fixedly connected with the second flange, the distal end of the rotor is connected with the fifth flange and the proximal end is connected with the fourth flange, and the second motor is configured to drive the second cone and the second straight cylinder to synchronously and reversely stretch and contract.

7. The animal administration mask of claim 6, wherein, At least one second connecting rod is further arranged in a circumferential direction of the second motor, the second connecting rod passes through and is slidably connected with the fifth flange, the second flange and the fourth flange in sequence.

8. The animal administration mask of claim 6, wherein, The inner wall of the second straight cylinder is provided with a spiral groove which extends in an axial direction.

9. The animal administration mask of claim 6, wherein, At least one through hole is formed on the outer periphery of the distal end side of the second straight cylinder, and the through hole is located on the proximal end side of the fifth flange.

10. The animal administration mask of claim 6, wherein, An elastic sealing sleeve is further provided, one end of the elastic sealing sleeve is sealingly connected with the inner wall of the tapered cylinder part, and the other end is sealingly connected with the inner wall of the second cone.

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