RU2281124C1 - Device for batching medicinal agents - Google Patents

Abstract

FIELD: medical engineering.

SUBSTANCE: device comprises unmovable housing provided with space filled with medicinal agent, mouthpiece connected with the housing, push button, and batching mechanism made of stepped rod with batching bushing concentrically mounted on the rod. The rod is mounted for permitting axial movement with respect to the housing that receives the piston with the spring for supplying medicinal agent. The batching bushing is connected with the push button whose side is made of a cylindrical shell that embraces unmovable housing. The spring used for supplying medicinal agent abuts against the inner face of the shell. The spring is used for returning the push button in the initial position The rod is locked against rotation in the bottom section. The unmovable housing is provided with radial openings and ring with the inner groove that defines the space for preparing the mixture of air with the medicinal agent. The scale for control batching is applied on the unmovable housing, and the side of the push button is provided with port for visualizing the scale for control of batch. The mouthpiece is provided on the face of the unmovable cylindrical housing.

EFFECT: simplified structure and enhanced precision.

9 cl, 8 dwg

Description

The invention relates to medical equipment, specifically to devices for the prevention of health and treatment for chronic diseases of the bronchopulmonary tract by administering doses of drugs through the respiratory system.

Known dispenser for powder medicines according to the patent of the Russian Federation for invention No. 2111020, which contains a reservoir for receiving powder with a channel passing through the housing, a metering disk with a metering hole, a spring assembly, rotation restriction means, a counter for counting the number of released doses of powder. The disadvantage of this invention is the inability to control the dose of the medicinal powder.

Also known is the dispenser of drugs by A. St. USSR No. 1733008. This is a powder inhaler containing a housing with a turbulator, inlet and outlet channels, a nest for the capsule, a button with elements opening the capsule and a mouthpiece, characterized in that in order to increase the efficiency of the use of the drug due to the directed flow of the air-powder mixture into the larynx, the inhaler equipped with a nozzle with openings for air inlet, mounted concentrically on the mouthpiece, the end of which has a bevel and protrudes above the nozzle, while the turbulator is made in the form located at an angle to the vertical axis of the wave-like screen, and the output channel is formed by radial holes in the button located opposite the turbulator.

The disadvantages are the same as the previously described analogue.

Known fairly simple in design inhaler for dry inhalation of powdered drugs according to the patent of the Russian Federation No. 2080833, publ. 06/10/97, the device includes a housing with holes for supplying air and a suction pipe. In the housing there is a container with therapeutic powder and a dispenser under it. The dispenser is made in the form of a measuring chamber having the shape of a half cylinder, matching the diameter of the channel of communication of the suction pipe with the atmosphere through the dispenser, and is equipped with a flywheel with a protrusion - an indicator against the container with powder. The disadvantage of this dispenser is the inconvenience of use due to the design of the drive, made in the form of a flywheel.

Known dispenser of medicines according to the patent of Russian Federation No. 2097069, IPC 6 A 61 M 15/00, publ. 11.27.97 g. This dispenser contains a housing, a mouthpiece and a button.

Disadvantages: the inability to regulate doses and the lack of a clear supply of drugs.

Known dispenser according to the application of the Russian Federation No. 2003123177, IPC 7 A 61 M 15/00, publ. 01/27/2005 g (prototype).

This device for dispensing medicines contains a housing with a cavity for placing medicines, to which a mouthpiece, a button and a dispensing mechanism are attached, the dispensing mechanism being made in the form of a rod with a metering sleeve concentrically placed on it, made with adjustable axial movement, the rod made stepwise with the possibility of axial movement relative to the housing and is equipped with a return spring from the side opposite to the button. A spring-loaded piston is installed in the cavity for the placement of drugs.

The disadvantage of this device is its rather complicated design due to the presence of a large number of parts including two springs, as well as the inconvenience of use when dispensing and adjusting due to the small size of the buttons and the scale with a rough calibration.

Objectives of the invention: simplifying the design, improving ease of use and improving the accuracy of adjustment.

The solution to these problems was achieved due to the fact that the device for dispensing medicines, containing a stationary case with a cavity for placing medicines, to which the mouthpiece, button and dispensing mechanism are connected, which is made in the form of a stepped rod with a metering sleeve concentrically placed on it, and the rod made with the possibility of axial movement relative to the housing, in which the piston is installed with a spring for the supply of drugs, while the metering sleeve is connected to a button , The lateral surface of which is formed as a cylindrical shell covering the stationary housing, and in its inner end abuts a spring for supplying drugs, the spring also fulfills the function keys return to their original position. The stem at the bottom is locked against rotation. In the stationary housing there are made radial holes and a ring with an internal annular groove forming a cavity for preparing a mixture of air with a drug. The dose adjustment scale is plotted on a fixed housing, and a window is made on the side surface of the button to visualize the dose adjustment scale. The mouthpiece can be made at the end of a stationary cylindrical body or not on its side. The device at the bottom is equipped with a removable cover. The mouthpiece is made with a latch for quick assembly and disassembly. The latch is made in the form of an internal ledge, which corresponds to a cavity on a fixed housing.

The proposed technical solution has novelty, inventive step and industrial applicability. The novelty is confirmed by patent research, the inventive step by obtaining new properties, including improved usability and dosing accuracy, while simplifying the design of the device.

The invention is illustrated in the drawings of figures 1 ... 8, where:

figure 1 shows the device in its original position,

figure 2 shows the scale

figure 3 shows the device in the working position, the activation button is pressed,

figure 4 is a transverse section bB of the first embodiment of the device,

Fig. 5 is a drawing of a second embodiment of the device,

figure 6 shows a cross section bb of the second variant of the device,

7 shows the appearance of the second variant of the device,

on Fig shows the appearance of the first embodiment of the device.

The device for dispensing drugs (figure 1) contains a fixed housing 1, to which a mouthpiece 2 is attached. Inside the fixed housing 1, a cavity "E" is made to accommodate the drug. The mouthpiece 2 can be attached from the bottom or side (Fig.7 and 8). Button 3 is made on top and has a side surface 4 made in the form of a cylindrical shell. Under the button 3 there is a metering mechanism, which is made in the form of a stepped rod 5 with a metering sleeve 6 concentrically placed on it. The rod 5 and the metering sleeve 6 are connected by a screw 7 so that the rod and sleeve have the possibility of axial movement relative to the fixed body 1 and relative to each other friend. A piston 8 and a spring 9 for supplying drugs are installed inside the stationary housing, and the spring 9 simultaneously performs the function of returning the button 3 to its original position. The cross section of the lower part of the rod is made in the form of a square entering with a gap in the square hole of the latch 10.

In the stationary housing 1 there are made radial holes “Zh” and a ring 11 with an inner annular groove forming the cavity “I” for preparing a mixture of air with the drug. The cavity for placing drugs "E" is placed inside the fixed body 1 under the piston 8. The dose adjustment scale 12 is applied to the fixed body 1, and a window is made on the side surface of the button 4 to visualize the dose adjustment scale 13. The mouthpiece 2 can be made at the end or on the side of the fixed housing 1. The device at the bottom is equipped with a removable cover 14. The mouthpiece 2 has a latch 15, which provides quick disassembly. Preferably, the latch 15 is made in the form of an inner ledge, which corresponds to a depression on the fixed housing 1 (Figs. 1 and 2). In the lower part of the device, a swirler 16 and a filter mesh 17 are installed, which protects the patient from large particles entering the respiratory tract.

During operation, a powdery drug is pre-poured into the cavity “E”. Rotating the metering sleeve 6, by rotating the button 3, the clearance “D” is changed, for example, when turned clockwise, it is reduced, thereby reducing the dose of the drug. The dose size is judged by a dose adjustment scale of 12, a control digit corresponding to the dose of the drug is visible through a window for visualizing the dose adjustment scale of 13 (FIG. 2). The dose of the powder medicine is supplied by pressing the button 3. In this case, the rod 5 is lowered to its lowest position, the spring 9 is compressed, and the metering sleeve 6 pushes the dose of the drug into the gap "D". The piston 8 compresses the drug located in the cavity "E", which ensures a continuous supply of drugs to the dosing sleeve 6. When inhaling the patient, air passing through the radial holes "G" captures the drug and transports it through the cavity "And" and the mouthpiece 2 into the airways (FIGS. 5 and 6).

The application of the invention allowed:

1. To simplify the design of the device by reducing the number of parts.

2. Ensure user convenience by increasing the diameter of the button, placing the scale on a larger diameter and performing the grooved side surface of the button.

3. Provide more accurate dose control by placing the scale on a larger diameter.

Claims (10)

1. The device for dispensing medicines, containing a stationary body with a cavity for placing medicines, to which a mouthpiece is attached, a button and a dispensing mechanism, characterized in that the dispensing mechanism is made in the form of a stepped rod with a metering sleeve concentrically placed on it, and the specified rod is made with the possibility of axial movement relative to the fixed housing, in which the piston is installed with a spring for the supply of drugs, the metering sleeve is connected to a button , the lateral surface of which is made in the form of a cylindrical shell covering the stationary body, and the above spring abuts against its inner end, which also performs the function of returning the button to its original position. 2. The device according to claim 1, characterized in that the rod in the lower part is fixed from rotation. 3. The device according to claim 1, characterized in that in the stationary housing there are made radial holes and a ring with an inner annular groove forming a cavity for preparing a mixture of air with a drug. 4. The device according to claim 1, characterized in that the dose adjustment scale is applied to the fixed housing, and a window is provided on the side surface of the button for visualizing the dose adjustment scale. 5. The device according to claim 1, characterized in that the mouthpiece is made at the end of the stationary body. 6. The device according to claim 1, characterized in that the mouthpiece is made sideways on a fixed housing. 7. The device according to claim 1, characterized in that it is equipped with a removable cover at the bottom. 8. The device according to claim 1, characterized in that the mouthpiece is made of a latch that provides quick assembly and disassembly. 9. The device according to claim 8, characterized in that the latch is made in the form of an internal ledge, which corresponds to a cavity on a fixed housing. 10. The device according to any one of claims 1 to 9, characterized in that the side surface of the button is corrugated.

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