Needleless powder injection drug delivery system

Abstract

The utility model relates to a needleless powder injection dosing system, which belongs to the technical field of medical instruments and comprises a high-pressure air propulsion bin, the lower end of the high-pressure air propulsion bin is fixedly communicated with a high-pressure one-way electromagnetic valve, and the lower end of the high-pressure one-way electromagnetic valve is rotatably connected with an anti-consolidation medicine storage bin through a sealing bearing. And a cutting nozzle is fixedly arranged at the lower end of the anti-consolidation medicine storage bin. According to the utility model, the drug delivery system simultaneously provided with the drug storage structure for preventing solidification and the injection structure for pressurizing and dispersing is provided, and the anti-solidification drug storage bin provided with the electric rotating sleeve and the lower inclined ring rotating and dispersing needle is arranged, so that the drug powder can be continuously stirred in the whole needle-free injection process to keep the discrete state of the drug powder and prevent solidification; by arranging the cutting spray head with the inner cutting conical sheet, medicine powder can still be cut and dispersed to be sprayed into a human body in a relatively discrete state after being pressed to enter the spray head, and therefore the problem that the spray head is blocked due to solidification when the medicine powder is sprayed out in a pressurized mode is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a needle-free powder injection drug delivery system. Background Art

[0002] Needle-free injection is a process in which a needle-free injection pusher generates a certain amount of pressure through a mechanically stable annular compression spring system, which pushes the drug under pressure and diffuses it into the patient's subcutaneous tissue. Needle-free injection targets include liquid and powder drugs. Since powder drugs are easily compressed and solidified to clog the nozzle, a drug delivery system that prevents powder drug solidification is extremely important for needle-free powder injection.

[0003] In the prior art, there is no drug delivery system specifically used for needle-free injection of powdered drugs to prevent solidification, and the drug delivery system for needle-free injection in the prior art is still a structure in which a push cylinder squeezes the drug into a conical hole for pressurized injection. Utility Model Content

[0004] In view of this, the purpose of the utility model is to propose a needle-free powder injection drug delivery system, which solves the problem of drug powder solidification and clogging the nozzle when it is pressurized and sprayed by providing a drug delivery system that has both a drug storage structure to prevent solidification and a pressurized discrete injection structure.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A needle-free powder injection drug delivery system comprises a high-pressure air propulsion chamber, the lower end of which is fixedly connected to a high-pressure one-way solenoid valve, the lower end of which is rotatably connected to an anti-consolidation drug storage chamber via a sealed bearing, and the lower end of which is fixedly provided with a cutting nozzle.

[0007] Furthermore, the high-pressure air propulsion chamber includes a stainless steel high-pressure chamber body, an air charging booster and a conical booster bottle mouth, and the conical booster bottle mouth is fixedly connected to the high-pressure one-way solenoid valve.

[0008] Furthermore, the anti-consolidation medicine storage bin includes a funnel-shaped rotating wall bin, an electric rotating sleeve is fixedly arranged on the outside of the funnel-shaped rotating wall bin, the top of the funnel-shaped rotating wall bin is fixedly connected to the high-pressure one-way solenoid valve through a sealing bearing sleeve, and a downward oblique circular rotating discrete needle is fixedly arranged on the inside of the funnel-shaped rotating wall bin.

[0009] Furthermore, the downwardly inclined circularly rotating discrete needle comprises an inclined cone needle fixedly arranged around the inner side of the funnel-shaped rotating wall bin, and the angle between the inclined cone needle and the inner side of the funnel-shaped rotating wall bin is 30°-60°.

[0010] Furthermore, the splitting nozzle includes an outer straight nozzle and an inner splitting cone, and the inner splitting cone is fixedly arranged on the inner wall of the outer straight nozzle.

[0011] Furthermore, the electric rotating sleeve, the high-pressure air propulsion chamber and the high-pressure one-way solenoid valve are all connected by lines and provided with a control switch.

[0012] The utility model has the following beneficial effects:

[0013] The utility model proposes a drug delivery system that has both a drug storage structure that prevents consolidation and a pressurized discrete injection structure. By providing an anti-consolidation drug storage bin with an electric rotating sleeve and an oblique ring rotating discrete needle, it is beneficial to continuously stir the drug powder in the entire needle-free injection process to keep it in a discrete state to prevent consolidation. By providing a splitting nozzle with an internal splitting cone, it is beneficial to achieve that after the drug powder is pressurized into the nozzle, it can still be split and dispersed in a relatively discrete state and injected into the human body, thereby effectively solving the problem of solidification and clogging of the nozzle when the drug powder is pressurized. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the overall device structure diagram;

[0015] Figure 2 It is a front view of the overall device structure;

[0016] Figure 3 It is a side view of the overall device structure;

[0017] Figure 4 It is a top view of the overall device structure;

[0018] Figure 5 A partial cross-sectional view of the anti-consolidation medicine storage bin;

[0019] Figure 6 This is a top view of the split nozzle.

[0020] Description of reference numerals:

[0021] 1. High-pressure air propulsion chamber; 2. Stainless steel high-pressure chamber body; 3. Inflatable booster; 4. Conical booster bottle mouth; 5. High-pressure one-way solenoid valve; 6. Sealed bearing; 7. Anti-consolidation medicine storage chamber; 8. Funnel-shaped rotating wall; 9. Electric rotating sleeve; 10. Downward oblique circular rotating discrete needle; 11. Splitting nozzle; 12. External straight spray pipe; 13. Internal splitting cone. DETAILED DESCRIPTION

[0022] 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.

[0023] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] Reference Figure 1-6 The utility model provides an embodiment: a needle-free powder injection drug delivery system, including a high-pressure air propulsion chamber 1, the high-pressure air propulsion chamber includes a stainless steel high-pressure chamber body 2, an air charging booster 3 and a conical booster bottle mouth 4, and a matching high-pressure one-way solenoid valve 5 is fixedly arranged at the lower end of the conical booster bottle mouth, which is used to control the opening and closing of the high-pressure air propulsion chamber, thereby indirectly controlling the generation and release of the high-pressure airflow used for needle-free injection.

[0025] An anti-consolidation drug storage bin 7 is rotatably connected to the lower end of the high-pressure one-way solenoid valve through a sealing bearing 6. The anti-consolidation drug storage bin includes a funnel-shaped rotating wall 8, an electric rotating sleeve 9 is fixedly provided on the outer side of the funnel-shaped rotating wall bin, and a lower oblique ring-rotating discrete needle 10 is fixedly provided on the inner side of the funnel-shaped rotating wall bin, which is used to keep the anti-consolidation drug storage bin rotating, thereby ensuring that the drug powder inside the anti-consolidation drug storage bin can be continuously stirred and dispersed under the action of the oblique ring-rotating discrete needles on the rotating funnel-shaped rotating wall to avoid consolidation.

[0026] A splitting nozzle 11 is fixedly arranged at the lower end of the anti-consolidation medicine storage bin, and the splitting nozzle comprises an outer straight spray pipe 12 and an inner splitting cone piece 13. The inner splitting cone piece is fixedly arranged on the inner wall of the outer straight spray pipe, and the inner splitting cone piece is evenly distributed on the inner wall of the outer straight spray pipe, and the inner splitting cone piece is an oblique conical vertical plate.

[0027] In the implementation process of this embodiment, a one-way solenoid valve is fixedly provided at the lower end of the splitting nozzle, which is used to control the inflow and outflow of powder by opening and closing. When powder is added to the overall drug delivery system, the one-way solenoid valve is closed to ensure that the powder entering the drug delivery system will not leak out. First, the powder is dropped into the anti-consolidation drug storage bin through the high-pressure air propulsion bin. After the powder is added, the high-pressure one-way solenoid valve is controlled to be closed, thereby ensuring that the powder in the anti-consolidation drug storage bin is separated from the high-pressure air propulsion bin. Then, the air booster and the electric rotating sleeve are controlled to be enabled through the control switch at the same time, thereby completing the high-pressure airflow reserve for the high-pressure air propulsion bin. At the same time, the powder is kept in the anti-consolidation drug storage bin because the oblique ring rotating discrete needle is continuously discretely stirred and maintained in a discrete state under the drive of the electric rotating sleeve. Then, when all the preparatory work is completed, when needle-free injection is to be performed, the high-pressure one-way solenoid valve and the one-way solenoid valve are opened synchronously through the control switch, so that the high-pressure airflow bursts out instantly. The high-pressure airflow is squeezed through the conical pressurizing bottle mouth so that the pressure is even greater when it comes into contact with the powder in the anti-consolidation medicine storage bin. Then, the powder is squeezed and sprayed out from the anti-consolidation medicine storage bin to the splitting nozzle through the instantaneous surge in pressure. Although the powder will consolidate under the extremely high-pressure airflow, the continuous rotation of the downward oblique annular discrete needle will instantly disperse the consolidated powder. Then, when it is squeezed into the splitting nozzle, it will be squeezed again and the powder that is about to consolidate will be squeezed and split again by the inner splitting cone to remain discrete. Through the dual effects of the downward oblique annular discrete needle and the inner splitting cone, the powder can be kept in a discrete state and sprayed out even when it is squeezed out at high pressure, thereby completing effective needle-free injection.

[0028] The present embodiment proposes a drug delivery system that has both a drug storage structure that prevents consolidation and a pressurized discrete injection structure. By providing an anti-consolidation drug storage chamber with an electric rotating sleeve and a downward oblique rotating discrete needle, it is beneficial to continuously stir the drug powder during the entire needle-free injection process to maintain its discrete state and prevent consolidation. By providing a splitting nozzle with an internal splitting cone, it is beneficial to achieve that after the drug powder is pressurized into the nozzle, it can still be split and dispersed and maintained in a relatively discrete state to be injected into the human body, thereby effectively solving the problem of solidification and clogging the nozzle when the drug powder is pressurized.

[0029] In this embodiment, the downward oblique circular rotating discrete needle includes an inclined cone needle fixedly arranged on the inner side of the funnel-shaped rotating wall bin, and the angle between the inclined cone needle and the inner side of the funnel-shaped rotating wall bin is 30°-60°. By surrounding and obliquely downwardly arranging the inclined circular rotating discrete needle on the inner side of the rotating bin wall, it is beneficial to both play the role of rotating discrete powder during needle-free injection and avoid greater obstruction to high-pressure impact, thereby ensuring that the impact force of the high-pressure airflow rushing into the extruded powder will not be significantly affected.

[0030] In this embodiment, the electric rotating sleeve, the high-pressure air propulsion chamber and the high-pressure one-way solenoid valve are all provided with a control switch through line connection, which is conducive to quickly and conveniently controlling the corresponding internal structure through the external control switch, thereby realizing the function of convenient control.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A needle-free powder injection drug delivery system, characterized in that: It includes a high-pressure air propulsion bin, the lower end of which is fixedly connected to a high-pressure one-way solenoid valve, the lower end of which is rotatably connected to an anti-consolidation medicine storage bin via a sealed bearing, and the lower end of which is fixedly provided with a cutting nozzle.

2. A needle-free powder injection drug delivery system according to claim 1, characterized in that: The high-pressure air propulsion chamber comprises a stainless steel high-pressure chamber body, an air charging booster and a conical booster bottle mouth, and the conical booster bottle mouth is fixedly connected to the high-pressure one-way solenoid valve.

3. The needle-free powder injection drug delivery system according to claim 1, characterized in that: The anti-consolidation medicine storage bin includes a funnel-shaped rotating wall bin, an electric rotating sleeve is fixedly arranged on the outside of the funnel-shaped rotating wall bin, the top of the funnel-shaped rotating wall bin is fixedly connected to the high-pressure one-way solenoid valve through a sealing bearing sleeve, and a downward oblique circular rotating discrete needle is fixedly arranged on the inside of the funnel-shaped rotating wall bin.

4. A needle-free powder injection drug delivery system according to claim 3, characterized in that: The downwardly inclined circularly rotating discrete needles include inclined cone needles that are fixedly arranged around the inner side of the funnel-shaped rotating wall bin, and the angle between the inclined cone needles and the inner side of the funnel-shaped rotating wall bin is 30°-60°.

5. The needle-free powder injection drug delivery system according to claim 1, characterized in that: The splitting nozzle comprises an outer straight spray pipe and an inner splitting cone piece, and the inner splitting cone piece is fixedly arranged on the inner wall of the outer straight spray pipe.

6. The needle-free powder injection drug delivery system according to claim 3, characterized in that: The electric rotating sleeve, the high-pressure air propulsion chamber and the high-pressure one-way electromagnetic valve are all connected by lines and provided with a control switch.

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