CN106075677B - Actuating mechanism of dry powder inhalation device - Google Patents

Abstract

The invention discloses an actuating mechanism of a dry powder inhalation device, which is characterized in that: the dry powder inhalation drug delivery system comprises a sliding support mechanism which can drive a quantitative chamber of a quantitative feeding mechanism in the dry powder inhalation drug delivery system to slide back and forth, wherein a waist-shaped connecting hole is arranged on the sliding support mechanism, and a dustproof actuating cover which can drive the sliding support mechanism is connected to the sliding support mechanism. The invention aims to overcome the defects in the prior art and provide the actuating mechanism of the dry powder suction device, which has a simple structure and is convenient to install and can effectively drive the quantitative feeding mechanism to work.

Description

Actuating mechanism of dry powder inhalation device

Technical Field

The invention relates to an actuating mechanism of a dry powder inhalation device.

Background

A dry powder inhalant is a micronized aerosol without propellant, and means that micronized drug or carrier is in the form of capsule, vesicle or multi-dose reservoir, and adopts a special dry powder inhalation device. Formulations that are actively inhaled by the patient. The dry powder inhalant is used as a pulmonary administration preparation formulation and is clinically used for treating pulmonary local diseases such as asthma, chronic obstructive disease, cystic fiber and the like.

The pulmonary route of administration has received much attention in the field of drug delivery system development due to its large absorption area and lack of hepatic first pass effect, and its clinical application has also progressed from traditional local treatment of asthma to systemic treatment. Unlike the general route of administration, pulmonary administration requires dispersion, nebulization, and pulmonary delivery of the drug by means of a special inhalation device, which plays a key role in the pulmonary delivery system. Currently, dry powder inhalation devices are the mainstream of drug delivery devices. Dry powder inhalation devices are pulmonary delivery devices that deliver a metered dose of drug powder to the lungs after aerosolization using a patient's respiratory airflow or powered device. The medicine is simple to use, easy to carry, good in patient compliance and wide in clinical application.

The existing dry powder inhalation device has the defects of complex structure, troublesome installation and inconvenient use of an actuating mechanism for dry powder inhalation administration due to the design defects.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides the actuating mechanism of the dry powder suction device, which has a simple structure and is convenient to install and can effectively drive the quantitative feeding mechanism to work.

In order to achieve the purpose, the invention adopts the following scheme:

an actuation mechanism for a dry powder inhalation device, characterized by: the quantitative dry powder inhalation system comprises a sliding support mechanism which can drive a quantitative chamber mechanism of a quantitative feeding mechanism in the dry powder inhalation system to slide back and forth, wherein the sliding support mechanism is provided with a waist-shaped connecting hole, and a dustproof actuating cover which can drive the sliding support mechanism is connected to the sliding support mechanism.

The actuating mechanism of the dry powder inhalation device is characterized in that the sliding support mechanism comprises a sliding support seat, a containing groove for installing the quantitative chamber mechanism is arranged on the sliding support seat, connecting support arms are respectively arranged on two sides of the sliding support seat, and waist-shaped connecting holes for connecting with the dustproof actuating cover are arranged in the connecting support arms.

The actuating mechanism of the dry powder inhalation device is characterized in that the dustproof actuating cover comprises an actuating cover body, connecting sheets are respectively arranged on two sides of the actuating cover body, and connecting convex columns are arranged on the inner sides of the connecting sheets and inserted in the waist-shaped connecting holes.

The actuating mechanism of the dry powder inhalation device is characterized in that a driving head capable of driving the counting mechanism to act is arranged on one of the connecting bracket arms.

The actuating mechanism of the dry powder inhalation device is characterized in that the quantitative feeding mechanism comprises a feeding seat, a storage chamber is arranged on the upper end surface of the feeding seat, a feed opening longitudinally penetrating through the feeding seat is arranged at the lower end of the storage chamber, a discharge pipe is arranged on the feeding seat, an opening at the rear end of the discharge pipe longitudinally penetrates through the feeding seat, and a quantitative chamber mechanism capable of quantitatively feeding the discharge pipe is movably connected to the lower end surface of the feeding seat.

The actuating mechanism of the dry powder inhalation device is characterized in that the quantitative chamber mechanism comprises a slidable quantitative chamber mechanism seat, and a quantitative groove is arranged on the quantitative chamber mechanism seat.

The actuating mechanism of the dry powder inhalation device is characterized in that a positioning groove is arranged in the lower end face of the quantitative chamber mechanism seat, and an elastic sheet which can enable the quantitative chamber mechanism seat to be pressed against the lower end face of the feeding seat is arranged in the positioning groove.

In summary, compared with the prior art, the invention has the beneficial effects that:

the actuating mechanism has simple structure and convenient installation and use, and can conveniently drive the quantitative feeding mechanism to act, thereby realizing quantitative feeding.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

fig. 3 is an exploded view of the present invention.

Detailed Description

The invention will be further described with reference to the following description and embodiments in conjunction with the accompanying drawings:

fig. 1 to 3 show an actuating mechanism of a dry powder inhalation device, which comprises a sliding support mechanism 4 capable of driving adosing chamber mechanism 25 of adosing mechanism 2 in a dry powder inhalation drug delivery system to slide back and forth, wherein the sliding support mechanism 4 is provided with a waist-shaped connectinghole 45, and the sliding support mechanism 4 is connected with a dustproof actuating cover 6 capable of driving the sliding support mechanism 4.

The sliding support mechanism 4 comprises asliding support 41, anaccommodating groove 42 for installing thequantitative chamber mechanism 25 is arranged on thesliding support 41, connectingsupport arms 43 are respectively arranged on two sides of thesliding support 41, and waist-shaped connectingholes 45 for connecting with the dustproof actuating cover 6 are arranged in the connectingsupport arms 43.

When the quantitative feeding device is used, the dustproof actuating cover 6 is pulled, and after the dustproof actuating cover 6 moves a certain position in the waist-shaped connectinghole 45, the dustproof actuating cover contacts with the connectingsupport arm 43, so that the sliding support mechanism 4 is driven to move outwards, and the sliding support mechanism 4 drives thequantitative chamber mechanism 25 to move, so that quantitative feeding is realized, and the quantitative feeding device is simple in structure, convenient to install and simple to use.

The dustproof actuating cover 6 comprises an actuatingcover body 61, connectingsheets 62 are respectively arranged on two sides of the actuatingcover body 61, connectingconvex columns 63 are arranged on the inner sides of the connectingsheets 62, and the connectingconvex columns 63 are inserted into waist-shaped connectingholes 45.

In the present invention, adriving head 44 capable of driving the counting mechanism 7 to operate is provided on one of the connectingbracket arms 43.

Thequantitative feeding mechanism 2 comprises afeeding seat 21, astorage chamber 22 is arranged on the upper end surface of thefeeding seat 21, a feed opening 23 longitudinally penetrating through thefeeding seat 21 is arranged at the lower end of thestorage chamber 22, adischarge pipe 24 is arranged on thefeeding seat 21, an opening at the rear end of thedischarge pipe 24 longitudinally penetrates through thefeeding seat 21, and aquantitative chamber mechanism 25 capable of quantitatively feeding thedischarge pipe 24 is movably connected to the lower end surface of thefeeding seat 21.

Thequantitative chamber mechanism 25 of the present invention includes a slidable quantitativechamber mechanism holder 251, and aquantitative groove 252 is provided in the quantitativechamber mechanism holder 251.

In the present invention, apositioning groove 253 is provided in the lower end surface of the dosingchamber mechanism seat 251, and aspring sheet 254 capable of pressing the dosingchamber mechanism seat 251 against the lower end surface of thefeeding seat 21 is provided in thepositioning groove 253.

In the invention, quantitative feeding can be realized by controlling the sliding support mechanism 4 to make the quantitativechamber mechanism seat 251 move back and forth. When the quantitativechamber mechanism seat 251 is located at the rear, thequantitative groove 252 is communicated with thedischarge hole 23, the medicinal powder in thestorage chamber 22 enters thequantitative groove 252 from thedischarge hole 23 until thequantitative groove 252 is filled, the quantitativechamber mechanism seat 251 is driven to move forwards, thequantitative groove 252 is communicated with thedischarge pipe 24, meanwhile, thedischarge hole 23 is sealed by the upper end face of the quantitativechamber mechanism seat 251 at the rear side of thequantitative groove 252, when a user sucks thedischarge pipe 24 by force, the medicinal powder in thequantitative groove 252 can be sucked out from thedischarge pipe 24, and the quantitative feeding device is simple in structure, quantitative and safe and reliable.

The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (5)

1. An actuation mechanism for a dry powder inhalation device, characterized by: comprises a sliding support mechanism (4) which can drive a quantitative chamber mechanism (25) of a quantitative feeding mechanism (2) in a dry powder inhalation drug delivery system to slide back and forth, wherein the sliding support mechanism (4) is provided with a waist-shaped connecting hole (45), the sliding support mechanism (4) is connected with a dustproof actuating cover (6) which can drive the sliding support mechanism (4), the sliding support mechanism (4) comprises a sliding support seat (41), the sliding support seat (41) is provided with a containing groove (42) for installing the quantitative chamber mechanism (25), two sides of the sliding support seat (41) are respectively provided with a connecting support arm (43), the waist-shaped connecting hole (45) is arranged in the connecting support arm (43), the dustproof actuating cover (6) comprises an actuating cover body (61), two sides of the actuating cover body (61) are respectively provided with a connecting sheet (62), the inner side of the connecting sheet (62) is provided with a connecting convex column (63), the connecting convex column (63) is inserted in the waist-shaped connecting hole (45).

2. The actuator mechanism for dry powder inhalation device according to claim 1, characterized in that a drive head (44) is provided on one of the connecting bracket arms (43) which can drive the counter mechanism (7) to act.

3. The actuating mechanism of a dry powder inhalation device according to claim 1, wherein the quantitative feeding mechanism (2) comprises a feeding base (21), a storage chamber (22) is disposed on the upper end surface of the feeding base (21), a discharge port (23) longitudinally penetrating through the feeding base (21) is disposed at the lower end of the storage chamber (22), a discharge pipe (24) is disposed on the feeding base (21), the rear end opening of the discharge pipe (24) longitudinally penetrates through the feeding base (21), and a quantitative chamber mechanism (25) capable of quantitatively feeding the discharge pipe (24) is movably connected to the lower end surface of the feeding base (21).

4. The actuator mechanism for dry powder inhaler according to claim 1, wherein the dosing chamber mechanism (25) comprises a slidable dosing chamber mechanism seat (251), and a dosing groove (252) is provided on the dosing chamber mechanism seat (251).

5. The actuator mechanism for dry powder inhaler according to claim 4, wherein a positioning groove (253) is formed in the lower end surface of the dosing chamber mechanism seat (251), and a spring (254) is disposed in the positioning groove (253) for pressing the dosing chamber mechanism seat (251) against the lower end surface of the feeding seat (21).

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