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Coaxial vibration gear used for vibration drug supply unit of reservoir-type dry powder inhalation drug supply device

A technology for drug delivery device and powder aerosol, which is applied in the field of coaxial vibration gears used in the vibrating drug delivery unit of a storage type powder aerosol drug delivery device, can solve the problems of poor powder fluidity, etc. The effect of fluidity and prevention of wear and seizure

Active Publication Date: 2019-11-19
SHANGHAI SINE YELLOW RIVER PHARMA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It adopts a coaxial vibrating gear and a new vibrating tooth shape design, which can improve the shortcomings of poor powder fluidity by providing vibration force, and can ensure the need for multiple vibrations for multi-dose storage powder aerosols, and can prevent vibration gears The appearance of wear and sticking can significantly improve the service life of the vibration gear, thereby effectively prolonging the service life of the entire storage-type powder mist delivery device

Method used

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  • Coaxial vibration gear used for vibration drug supply unit of reservoir-type dry powder inhalation drug supply device
  • Coaxial vibration gear used for vibration drug supply unit of reservoir-type dry powder inhalation drug supply device
  • Coaxial vibration gear used for vibration drug supply unit of reservoir-type dry powder inhalation drug supply device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] The opposite tooth surfaces of the first and second vibration gears of the vibration gear adopt the conventional tooth surface generation form:

[0086] When R does not intersect the axis, the formula middle and H(t) are both linear functions.

[0087] By drawing and processing the real object in this way, the torque of the relative rotation of the vibrating teeth is tested as follows:

[0088] project 10 20 30 40 50 60 70 80 90 100 Example 1 device 1 1.6 1.6 1.7 1.7 2.1 5.3 N / A N / A N / A N / A Example 1 device 2 1.5 1.6 1.7 1.9 4.3 N / A N / A N / A N / A N / A Example 1 device 3 1.7 1.6 1.8 2.0 5.7 N / A N / A N / A N / A N / A Example 1 device 4 1.6 1.6 1.7 1.8 1.9 2.7 6.1 N / A N / A N / A Example 1 device 5 1.6 1.6 1.7 1.7 2.1 3.1 5.8 N / A N / A N / A Example 1 device 6 1.5 1.5 1.6 1.6 1.9 4.6 N / A N / A N / A N / A Example 1 device 7 1.6 1.5 1.6 1.8 2.2 5.3 ...

Embodiment 2

[0093] When R intersects the axis, the formula middle and H(t) are both linear functions. By drawing and processing the real object in this way, the torque of the relative rotation of the vibrating teeth is tested as follows:

[0094] project 10 20 30 40 50 60 70 80 90 100 Example 1 device 1 2.3 2.3 2.3 2.4 2.3 2.3 2.3 2.3 2.3 2.3 Example 1 device 2 2.2 2.3 2.3 2.3 2.3 2.3 2.4 2.3 2.4 2.3 Example 1 device 3 2.3 2.2 2.3 2.3 2.4 2.4 2.3 2.3 2.3 2.4 Example 1 device 4 2.2 2.3 2.3 2.2 2.3 2.3 2.3 2.4 2.3 2.3 Example 1 device 5 2.4 2.3 2.3 2.4 2.3 2.3 2.2 2.3 2.3 2.3 Example 1 device 6 2.3 2.2 2.3 2.3 2.2 2.3 2.4 2.3 2.3 2.3 Example 1 device 7 2.2 2.3 2.2 2.3 2.3 2.3 2.3 2.3 2.3 2.3 Example 1 device 8 2.2 2.3 2.3 2.2 2.3 2.3 2.3 2.3 2.4 2.3 Example 1 device 9 2.3 2.4 2.3 2.3 2.2 2.3 2.3 2.4 2.3 2.3 Example one device 10 2...

Embodiment 3

[0099] When R intersects the axis, the formula middle is a quadratic function, and H(t) is a one-time function.

[0100] By drawing and processing the real object in this way, the torque of the relative rotation of the vibrating teeth is tested as follows:

[0101]

[0102]

[0103] Note: 10, 20 to 100 represent the average torque recorded every ten times.

[0104] It can be seen from the data that the torque does not show an increasing trend with the increase of the number of vibrations in this way, and the relative rotation torque of the vibrating teeth is relatively average, and the average value is moderate.

[0105] The vibrating tooth surface of the disassembly device is relatively complete. The analysis reason is that this kind of curved surface will become line contact during the relative rotation process, and no friction will occur in long-term line contact. Since the line contact reduces friction, the static electricity generated by the relative surface con...

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Abstract

The invention relates to a coaxial vibration gear used for a vibration drug supply unit of a reservoir-type dry powder inhalation drug supply device, and belongs to the field of inhalation type drug supply devices. A first gear and a second gear are in a circular-disc shape; vibrating teeth of the first gear and vibrating teeth of the second gear are opposite to each other; according to tooth shapes of the vibrating teeth, first sides are a vertical straight surface, and second sides are an inclined surface, a curved surface or the combination of the inclined surface and the curved surface; and the first gear and the second gear have a relative rotation relationship in the working state. When first gear and the second gear are relatively rotated to the helical tooth surface, the first gearand the second gear slide in the axial direction from the first position to the second position to generate relative displacement, and the relative displacement becomes zero at the moment of relativerotation to the straight tooth surface, so that relative vibration is produced between the first gear and the second gear. The vibration gears can be prevented from being worn and stuck, and the service life of the vibration gears can be significantly prolonged, so that the service life of the entire drug supply device is effectively prolonged, and the coaxial vibration gear used for the vibration drug supply unit of the reservoir-type dry powder inhalation drug supply device can be widely used in the field of designing and manufacturing of the vibration drug supply unit of the reservoir-typedry powder inhalation drug supply device

Description

technical field [0001] The invention belongs to the field of devices for infusing a medium into or onto a human body, and in particular relates to a storage-type powder aerosol dosing device. Background technique [0002] Powder spray refers to micronized drug or in the form of capsules, vesicles or multi-dose reservoirs with carriers, using a special powder spray drug delivery device or inhalation device (or called an inhalation drug delivery device, also known as an inhalation drug delivery device in the past. Dry powder inhalation device or dry powder drug delivery device), a preparation form in which the patient actively inhales an aerosolized drug into the lungs. Inhalation powder spray relies on the patient's spontaneous breathing to make the drug powder enter the respiratory system, which has the characteristics of portability, low cost and strong stability. In recent years, the scope of application of inhaled powders has expanded from the traditional treatment of lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M15/00
CPCA61M15/0001
Inventor 谭中华卢望丁王然罗国军杜狄峥
Owner SHANGHAI SINE YELLOW RIVER PHARMA CO LTD
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