Powder administration device for nasal cavity

Abstract

The utility model discloses a powder administration device for a nasal cavity, which belongs to the technical field of powder administration for the nasal cavity and comprises a barrel, a vertically downward piston cavity is arranged on the upper surface of the barrel, an administration handle is arranged in the piston cavity, an administration spray head is connected to the lower end of the surface of the barrel and communicated with the lower end of the piston cavity through a communication cavity, and the upper surface of the barrel is provided with a cavity. The upper surface of the barrel is further provided with a medicine feeding cavity, and the medicine feeding cavity is communicated with the medicine feeding spray head through a medicine inlet cavity. Medicine powder is poured into the medicine feeding cavity, the medicine powder is sprayed into the nasal cavity through the medicine feeding nozzle by pressing the medicine feeding handle, medicine feeding is achieved, and the medicine feeding device has the advantages of being simple in structure, low in manufacturing cost and convenient to use. The connecting rod is sleeved with the spring, the spring is located between the cylinder body and the pressing handle, and after the pressing handle is loosened, the piston head can automatically reset upwards under the action of the spring, so that pressing is facilitated again.

Description

Technical Field

[0001] The utility model belongs to the technical field of nasal powder administration, and in particular relates to a nasal powder administration device. Background Art

[0002] The human nasal cavity wall is rich in mucous membranes, and the surface area of ​​the human nasal mucosa can reach 150cm 2 Similar to the microvilli in the small intestine, the numerous tiny villi on the nasal mucosa can greatly increase the effective area for drug absorption; the nasal mucosa is rich in capillaries, which allows the drug to enter the systemic circulation directly after being absorbed by the nasal cavity, avoiding the first-pass effect; in addition, the drug can also enter the brain directly through the olfactory nerve pathway and the olfactory mucosal epithelial pathway.

[0003] Existing nasal powder drug delivery devices mainly use high-pressure plastic blisters to load drug powders, and use internal high-pressure gas to achieve drug projection and dispersion. The preparation process is complex and the cost is high. Utility Model Content

[0004] In order to solve the problems raised in the above background technology, the utility model provides a nasal powder drug delivery device, which has the characteristics of simple structure, low manufacturing cost and convenient use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a nasal powder dosing device, comprising a barrel, a piston cavity vertically downward is provided on the upper surface of the barrel, a dosing handle is provided inside the piston cavity, a dosing nozzle is connected to the lower end of the barrel surface, the dosing nozzle is connected to the lower end of the piston cavity through a connecting cavity, a dosing cavity is also provided on the upper surface of the barrel, and the dosing cavity and the dosing nozzle are connected through a drug inlet cavity.

[0006] In order to spray out the medicine powder in the dosing nozzle, the dosing handle further includes a connecting rod, wherein the lower end of the connecting rod is connected to a piston head, the piston head is embedded in the piston cavity, and the upper end of the connecting rod is connected to a pressing handle.

[0007] In order to install the drug delivery nozzle, further, a mounting cavity connected with the communicating cavity is provided on the lower end of the surface of the cylinder, and the drug delivery nozzle is embedded in the interior of the mounting cavity.

[0008] Furthermore, a penetrating spray hole is provided inside the drug delivery nozzle. A connecting hole corresponding to the drug inlet cavity and connected with the spray hole is provided on the drug delivery nozzle.

[0009] In order to prevent the medicine powder from spraying upward through the medicine feeding chamber when the medicine feeding handle is pressed, the medicine feeding chamber is further arranged to be inclined, and the lower end of the medicine feeding chamber is located at a side away from the piston chamber.

[0010] In order to allow the piston head to automatically return upward after the pressing handle is released, so as to facilitate pressing again, further, a spring is sleeved on the outside of the connecting rod, and the spring is located between the cylinder body and the pressing handle.

[0011] In order to achieve precise drug delivery, the drug feeding chamber and the installation chamber are further offset, a horizontal metering chamber is provided in the cylinder, a metering block is slid inside the metering chamber, a metering hole corresponding to the drug feeding chamber is provided inside the metering block, a limit ring is provided inside the metering chamber, the metering block is connected to the bottom of the metering chamber by a reset spring, and a push handle is connected to the other end of the metering block.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model pours the medicine powder into the medication cavity, and by pressing the medication handle, the medicine powder is sprayed into the nasal cavity through the medication nozzle to achieve medication, which has the characteristics of simple structure, low manufacturing cost and convenient use;

[0014] 2. The medicine inlet chamber of the utility model is tilted, and the lower end of the medicine inlet chamber is located on the side away from the piston chamber, so as to avoid the medicine powder being sprayed upward through the medicine inlet chamber when the dosing handle is pressed;

[0015] 3. The outer sleeve of the connecting rod of the utility model is provided with a spring, which is located between the cylinder and the pressing handle. After the pressing handle is released, the piston head can automatically return upward under the action of the spring, which is convenient for pressing again;

[0016] 4. The utility model ensures that the amount of medicine sprayed each time is consistent through the setting of the metering hole, thereby facilitating accurate drug delivery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a cross-sectional structural schematic diagram of the cylinder of the utility model;

[0020] Figure 3 This is a schematic cross-sectional view of the drug delivery nozzle of the utility model;

[0021] Figure 4 It is a cross-sectional structural schematic diagram of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the drug delivery handle of the utility model;

[0023] Figure 6 This is a schematic cross-sectional view of the structure of Embodiment 2 of the present utility model;

[0024] Figure 7This is a schematic cross-sectional view of the structure of Embodiment 4 of the present utility model;

[0025] In the figure: 1. Cylinder; 11. Piston chamber; 12. Mounting chamber; 13. Connecting chamber; 2. Dosing nozzle; 21. Spray hole; 22. Connecting hole; 3. Dosing chamber; 31. Drug inlet chamber; 4. Dosing handle; 41. Connecting rod; 42. Piston head; 43. Pressing handle; 5. Spring; 6. Measuring chamber; 7. Measuring block; 71. Measuring hole; 72. Reset spring; 73. Limiting ring; 74. Push handle. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example 1

[0028] See also Figure 1-5 The utility model provides the following technical solutions: a nasal powder dosing device, comprising a barrel 1, a piston cavity 11 vertically downward is provided on the upper surface of the barrel 1, a dosing handle 4 is provided inside the piston cavity 11, a dosing nozzle 2 is connected to the lower end of the surface of the barrel 1, a penetrating spray hole 21 is provided inside the dosing nozzle 2, a connecting hole 22 corresponding to a medicine inlet cavity 31 and connected to the spray hole 21 is provided on the dosing nozzle 2, the dosing nozzle 2 is connected to the lower end of the piston cavity 11 through a connecting cavity 13, a dosing cavity 3 is also provided on the upper surface of the barrel 1, and the dosing cavity 3 is connected to the dosing nozzle 2 through the medicine inlet cavity 31.

[0029] By adopting the above technical solution, the utility model pours the medicine powder into the dosing cavity 3, and sprays the medicine powder into the nasal cavity through the dosing nozzle 2 by pressing the dosing handle 4 to achieve dosing. It has the characteristics of simple structure, low manufacturing cost and easy use.

[0030] Specifically, the medication handle 4 includes a connecting rod 41 , wherein the lower end of the connecting rod 41 is connected to a piston head 42 , the piston head 42 is embedded in the piston cavity 11 , and the upper end of the connecting rod 41 is connected to a pressing handle 43 .

[0031] By adopting the above technical solution, the pressing handle 43 is pressed to move the piston head 42 downward in the piston chamber 11, so that the powder in the drug delivery nozzle 2 is sprayed out.

[0032] Specifically, a mounting cavity 12 communicating with the communicating cavity 13 is provided on the lower end of the surface of the barrel 1 , and the dosing nozzle 2 is embedded in the mounting cavity 12 .

[0033] The above technical solution is used to install the drug delivery nozzle 2.

[0034] Example 2

[0035] See also Figure 6 The difference between this embodiment and embodiment 1 is that: specifically, the medicine feeding chamber 31 is inclined, and the lower end of the medicine feeding chamber 31 is located on the side away from the piston chamber 11.

[0036] By adopting the above technical solution, it is prevented that the medicine powder is sprayed upward through the medicine inlet cavity 31 when the medicine administering handle 4 is pressed.

[0037] Example 3

[0038] The present embodiment is different from the first embodiment in that: specifically, a spring 5 is sleeved on the outside of the connecting rod 41 , and the spring 5 is located between the cylinder 1 and the pressing handle 43 .

[0039] By adopting the above technical solution, after the pressing handle 43 is released, the piston head 42 can automatically return to its original position under the action of the spring 5, so that it is easy to press again.

[0040] See also Figure 7 , the difference between this embodiment and embodiment 1 is that: specifically, the medicine feeding chamber 31 and the installation chamber 12 are offset, a horizontal metering chamber 6 is provided in the cylinder 1, a metering block 7 is slidably provided inside the metering chamber 6, a metering hole 71 corresponding to the medicine feeding chamber 31 is provided inside the metering block 7, a limiting ring 73 is provided inside the metering chamber 6, the metering block 7 is connected to the bottom of the metering chamber 6 through a reset spring 72, and a push handle 74 is connected to the other end of the metering block 7, and the metering block 7 is limited by the limiting ring 73, so that after the metering block 7 is pushed into place, the metering hole 71 corresponds to the installation chamber 12, and at this time, the metering block 7 is located at one end of the push handle 74 to block the medicine feeding chamber 31, so as to prevent the remaining medicine powder in the drug delivery chamber 3 from entering the metering chamber 6, resulting in the loss of medicine powder.

[0041] By adopting the above technical solution, in the initial state, under the action of the reset spring 72, the metering hole 71 on the metering block 7 corresponds to the medicine inlet chamber 31. When in use, put the powder into the drug delivery chamber 3, press the push handle 74, and the push handle 74 drives the metering block 7 to slide inward, so that the metering hole 71 corresponds to the installation chamber 12, so that the powder in the metering hole 71 can enter the spray hole 21 through the connecting hole 22, and be sprayed out after pressing the drug delivery handle 4; by setting the metering hole 71, it is ensured that the amount of medicine sprayed each time is consistent, so as to facilitate accurate drug delivery.

[0042] To sum up, the utility model pours the medicine powder into the dosing chamber 3, and sprays the medicine powder into the nasal cavity through the dosing nozzle 2 by pressing the dosing handle 4, so as to achieve dosing, and has the characteristics of simple structure, low manufacturing cost and convenient use; the medicine inlet chamber 31 of the utility model is inclined, and the lower end of the medicine inlet chamber 31 is located on the side away from the piston chamber 11, so as to avoid the medicine powder being sprayed upward through the medicine inlet chamber 31 when the dosing handle 4 is pressed; the outer sleeve of the connecting rod 41 of the utility model is provided with a spring 5, and the spring 5 is located between the cylinder 1 and the pressing handle 43. After releasing the pressing handle 43, the piston head 42 can automatically reset upward under the action of the spring 5, so as to facilitate pressing again; the utility model ensures that the amount of medicine sprayed each time is consistent through the setting of the metering hole 71, so as to facilitate accurate dosing.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A nasal powder delivery device, comprising a barrel, characterized in that: A piston cavity pointing vertically downward is provided on the upper surface of the cylinder, a dosing handle is provided inside the piston cavity, a dosing nozzle is connected to the lower end of the cylinder surface, the dosing nozzle is connected to the lower end of the piston cavity through a connecting cavity, a dosing cavity is also provided on the upper surface of the cylinder, and the dosing cavity is connected to the dosing nozzle through a drug inlet cavity.

2. A nasal powder delivery device according to claim 1, characterized in that: The medication handle comprises a connecting rod, wherein the lower end of the connecting rod is connected with a piston head, the piston head is embedded in the piston cavity, and the upper end of the connecting rod is connected with a pressing handle.

3. A nasal powder delivery device according to claim 1, characterized in that: A mounting cavity communicated with the communicating cavity is arranged on the lower end of the surface of the cylinder, and the dosing nozzle is embedded in the mounting cavity.

4. A nasal powder delivery device according to claim 1, characterized in that: A penetrating spray hole is arranged inside the dosing spray head.

5. A nasal powder delivery device according to claim 1, characterized in that: The drug delivery nozzle is provided with a communication hole corresponding to the drug inlet cavity and connected with the spray hole.

6. A nasal powder delivery device according to claim 1, characterized in that: The medicine feeding chamber is arranged obliquely, and the lower end of the medicine feeding chamber is located at a side away from the piston chamber.

7. A nasal powder delivery device according to claim 2, characterized in that: The outer sleeve of the connecting rod is provided with a spring, and the spring is located between the cylinder body and the pressing handle.

8. A nasal powder delivery device according to claim 3, characterized in that: The medicine feeding chamber and the installation chamber are offset, a horizontal metering chamber is arranged in the cylinder body, a metering block is slidably arranged inside the metering chamber, a metering hole corresponding to the medicine feeding chamber is arranged inside the metering block, a limit ring is arranged inside the metering chamber, the metering block is connected to the bottom of the metering chamber by a reset spring, and a push handle is connected to the other end of the metering block.

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