A coaxial vibration gear used in the vibrating drug delivery unit of the storage type powder mist drug delivery device

A technology of drug delivery device and powder aerosol, which is applied in the field of coaxial vibration gear used in the vibrating drug delivery unit of storage type powder aerosol drug delivery device, which can solve the problems of poor powder fluidity and other problems

CN110464930BActive Publication Date: 2021-09-10SHANGHAI SINE YELLOW RIVER PHARMA CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-09-10

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Abstract

The invention discloses a coaxial vibrating gear used for a vibrating drug delivery unit of a storage-type powder mist drug delivery device, which belongs to the field of inhalation drug delivery devices. The first and second gears are disc-shaped; the vibrating teeth of the first and second gears are arranged opposite to each other; the tooth type of the vibrating teeth is that the first side is a vertical straight surface, and the second side is a slope, a curved surface or a slope and a curved surface. The combination; the first gear and the second gear have a relative rotation relationship in the working state, and when the relative rotation reaches the helical tooth surface, the first gear and the second gear slide axially from the first position to the second position to generate a relative displacement , the relative displacement becomes zero at the moment of relative rotation to the spur tooth surface, whereby relative vibration is generated between the first gear and the second gear. It can prevent the vibration gear from being worn out and stuck, and can significantly improve the service life of the vibration gear, thereby effectively prolonging the service life of the entire drug delivery device. The invention can be widely used in the field of design and manufacture of the vibrating drug delivery unit of the storage type powder spray drug delivery device.
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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...

Examples

Embodiment 1

[0081] The opposite tooth surfaces of the first and second vibration gears of the vibration gear adopt the conventional tooth surface generation form:

[0082] When R does not intersect the axis, the formula middle and H(t) are both linear functions.

[0083] By drawing and processing the real object in this way, the torque of the relative rotation of the vibrating teeth is tested as follows:

[0084] 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

[0089] When R intersects the axis, the formula middle and H(t) are both linear functions. Pass

[0090] By drawing and processing the real object in this way, the torque of the relative rotation of the vibrating teeth is tested as follows:

[0091] 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 o...

Embodiment 3

[0096] When R intersects the axis, the formula middle is a quadratic function, and H(t) is a one-time function.

[0097] By drawing and processing the real object in this way, the torque of the relative rotation of the vibrating teeth is tested as follows:

[0098]

[0099]

[0100] Note: 10, 20 to 100 represent the average torque recorded every ten times.

[0101] 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.

[0102] 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...