Needleless powder injection device

Abstract

The present application relates to a kind of needle-free powder injection device, belong to medical instrument technical field, including injection device shell, pressurized air warehouse, high-pressure electromagnetic valve, rotating powder discrete warehouse, inner spin anti-solidification spray head and negative pressure skin contact cover.The present application is provided with the structure of needle-free powder injection device with the structure of preventing excessive powder stacking consolidation by setting simultaneously enhancing injection pressure, by high-pressure air warehouse combination conical pressurization and port negative pressure combination, it is beneficial to enhance injection pressure, by setting rotating needle discharge device, the powder stacked in device is continuously stirred to place consolidation, and high-pressure injection needle discharge and inner spin thread guide powder groove are beneficial to the whole of the powder being extruded to avoid stacking consolidation, so as to guarantee that pressure is sufficient and single-hole high-pressure extrusion basically does not produce consolidation, greatly improve the success rate of needle-free powder injection.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a needle-free powder injection device. Background Technology

[0002] Needle-free injection is an injection method that does not use traditional capillary needles. It utilizes a needle-free injection actuator that generates pressure through a mechanically stable ring-shaped compression spring system. Under this pressure, the medication is propelled and diffused into the patient's subcutaneous tissue. Needle-free injection includes liquid needle-free injection and powder needle-free injection. Because powder is easily compressed from a free state into a solid mass under pressure, the actual amount injected into the body is relatively small. Therefore, ensuring that the powder is injected into the subcutaneous tissue in a discrete state under high pressure is extremely important for needle-free powder injection.

[0003] Currently, there is no practical and effective dedicated needleless powder injection device that can guarantee the powder to be in a discrete state as much as possible during needleless injection. The existing technology still uses the same structure as liquid needleless injection for needleless powder injection. However, the traditional liquid needleless injection structure is a single conical hole high-pressure extrusion jet structure for needleless injection. It is very easy for a lot of powder to be squeezed, which will cause it to stick and solidify at the needle orifice, blocking the needle orifice and causing the needleless powder injection to fail. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a needle-free powder injection device. By setting up a needle-free powder injection device that simultaneously has a structure to enhance injection pressure and a structure to prevent excessive powder from stacking and solidifying, the device solves the problems of insufficient injection pressure during surgery causing difficulty in powder penetration under the skin and the easy solidification and blockage of the needle port by powder under high pressure in a single hole, resulting in low powder penetration or even injection failure.

[0005] This invention is achieved through the following technical solution:

[0006] A needle-free powder injection device includes an injection device housing, a pressurized jet chamber fixedly disposed inside the injection device housing, a high-pressure solenoid valve fixedly disposed at the lower end of the pressurized jet chamber, a rotating powder dispersing chamber fixedly connected at the lower end of the high-pressure solenoid valve, an inner-rotation anti-caking nozzle fixedly connected at the lower end of the rotating powder dispersing chamber, and a negative pressure skin contact cover surrounding the inner-rotation anti-caking nozzle.

[0007] Furthermore, the pressurized jet chamber includes a stainless steel high-pressure chamber body, an air inflator, and a conical pressurization nozzle. The conical pressurization nozzle is fixedly connected to the high-pressure solenoid valve, and a shock-absorbing fixing sleeve is filled between the stainless steel high-pressure chamber body and the outer shell of the injection device.

[0008] Furthermore, the rotating powder discrete chamber includes a funnel-shaped rotating wall chamber, an electric rotating sleeve is fixedly installed on the outside of the funnel-shaped rotating wall chamber, the top of the funnel-shaped rotating wall chamber is fixedly connected to the high-pressure solenoid valve through a sealed bearing sleeve, and a discrete rotating stirring needle is fixedly installed on the inside of the funnel-shaped rotating wall chamber.

[0009] Furthermore, the internally rotating anti-solidification nozzle includes a direct injection pipe, and an internally rotating threaded powder guiding groove is fixedly provided on the inner side of the direct injection pipe.

[0010] Furthermore, a one-way solenoid valve is fixedly connected between the negative pressure skin contact cover and the direct spray pipe, a negative pressure adsorption suction tube is connected to the side of the negative pressure skin contact cover, a negative pressure suction machine is connected to the outside of the negative pressure adsorption suction tube, and the negative pressure suction machine is fixedly installed on the side wall of the injection device housing.

[0011] Furthermore, the top of the injection device housing is provided with a discharge port and a control button. The discharge port is connected to the stainless steel high-pressure chamber through a one-way feeding pipe. An electromagnetic check valve is fixedly installed on the one-way feeding pipe. The control button is connected to the air inflator, high-pressure solenoid valve, electric rotating sleeve, one-way solenoid valve and negative pressure suction machine through wiring respectively.

[0012] Furthermore, the negative pressure skin contact cover port is configured with a latex gasket.

[0013] Furthermore, the outer side of the injection device housing is provided with an anti-slip insulating coating.

[0014] The beneficial effects of this invention are as follows:

[0015] This invention provides a needle-free powder injection device that simultaneously enhances injection pressure and prevents excessive powder stacking and agglomeration. The combination of a high-pressure air chamber, conical pressurization, and negative pressure at the port enhances injection pressure. A rotating needle continuously stirs and prevents the stacked powder from solidifying, and during high-pressure injection, the needle and internal spiral powder guide groove effectively break up the compressed powder, thus preventing stacking and agglomeration. This ensures sufficient pressure and minimal agglomeration during single-hole high-pressure extrusion, significantly improving the success rate of needle-free powder injection. Attached Figure Description

[0016] Figure 1 For the overall assembly structure drawing;

[0017] Figure 2 This is a front view of the overall structure;

[0018] Figure 3 This is a side view of the overall structure;

[0019] Figure 4 Top view of the overall assembly;

[0020] Figure 5 This is a diagram of the overall structure after shell removal and assembly.

[0021] Figure 6 The front view of the assembled shell;

[0022] Figure 7 Side view of the assembled shell;

[0023] Figure 8 Top view of the assembled shell;

[0024] Figure 9 Diagram of the structure to prevent consolidation.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Injection device housing; 2. Discharge port; 3. Control buttons; 4. Pressurized jet chamber; 5. Stainless steel high-pressure chamber body; 6. Air inflator; 7. Conical pressurized bottle mouth; 8. High-pressure solenoid valve; 9. Shock-absorbing fixing sleeve; 10. Rotating powder dispersion chamber; 11. Funnel-shaped rotating wall chamber; 12. Electric rotating sleeve; 13. Sealed bearing sleeve; 14. Discrete rotating stirring needle; 15. Internally rotating anti-consolidation nozzle; 16. Direct spray pipe; 17. Internally rotating threaded powder guide groove; 18. Negative pressure skin contact cover; 19. One-way solenoid valve; 20. Negative pressure adsorption suction pipe; 21. Negative pressure suction machine; 22. Electromagnetic check valve. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the above description of the present invention, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is conventionally placed during use. These terms are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable.

[0032] like Figure 1-9 As shown, one embodiment of the present invention provides a needle-free powder injection device, including an injection device housing 1, a discharge port 2 and a control button 3 on the top of the injection housing, a pressurized jet chamber 4 connected below the discharge port via a one-way feed pipe, an electromagnetic check valve 22 fixedly installed on the one-way feed pipe to prevent backflow under pressure, the pressurized jet chamber includes a stainless steel high-pressure chamber 5, an air inflator 6 and a conical pressurized bottle mouth 7, the lower port of the conical pressurized bottle mouth is fixedly connected to a high-pressure solenoid valve 8, and a shock-absorbing fixing sleeve 9 is filled between the stainless steel high-pressure chamber and the injection device housing.

[0033] A rotating powder dispersion chamber 10 is fixedly connected to the lower end of the high-pressure solenoid valve. The rotating powder dispersion chamber includes a funnel-shaped rotating wall chamber 11. An electric rotating sleeve 12 is fixedly installed on the outside of the funnel-shaped rotating wall chamber. The top of the funnel-shaped rotating wall chamber is fixedly connected to the high-pressure solenoid valve through a sealed bearing sleeve 13. A discrete rotating stirring needle 14 is fixedly installed on the inside of the funnel-shaped rotating wall chamber.

[0034] An internally rotating anti-caking nozzle 15 is fixedly connected to the lower end of the rotating powder dispersion chamber. The nozzle includes a direct spray pipe 16, with an internally rotating threaded powder guide groove 17 fixedly installed inside the pipe. A negative pressure skin contact cover 18 surrounds the nozzle. A one-way solenoid valve 19 is fixedly connected between the negative pressure skin contact cover and the direct spray pipe to isolate the direct spray pipe and the negative pressure skin contact cover, facilitating the formation of two different pressure chambers. A negative pressure suction pipe 20 is connected to the side of the negative pressure skin contact cover, and a negative pressure suction machine 21 is connected to the outside of the suction pipe. The negative pressure suction machine is fixedly installed on the side wall of the injection device housing. Control buttons are connected to the inflation booster, high-pressure solenoid valve, electric rotating sleeve, one-way solenoid valve, and negative pressure suction machine via wiring.

[0035] In this embodiment, the powder to be injected is first added into the pressurized jet chamber through the discharge port. The control button closes the high-pressure solenoid valve, allowing the powder to accumulate inside. Once the powder is fully added, the control button closes the one-way solenoid valve and opens the high-pressure solenoid valve. The powder then flows into the rotating powder dispersion chamber through the channel. Simultaneously, the electric rotating sleeve is activated, driving the rotating agitator to stir the powder and air within the dispersion chamber, ensuring a more thorough and complete entry of the powder into the dispersion chamber. After a certain period, the control button closes the high-pressure solenoid valve and the solenoid check valve, and the air inflator is activated to increase the air pressure, while maintaining the electric... The rotating sleeve prevents the powder inside the chamber from solidifying. Then, the negative pressure skin contact cover is placed against the skin to be injected. The negative pressure suction machine is then activated by pressing a button, creating negative pressure inside the skin contact cover. The negative pressure suction machine is then turned off, and immediately the high-pressure solenoid valve and the one-way solenoid valve are pressed simultaneously. The high-pressure airflow rushes into the discrete chamber, forcefully squeezing and ejecting the unsolidified powder. The negative pressure inside the contact cover further enhances the air pressure effect, ensuring that the powder is injected subcutaneously. Due to the dual anti-solidification structure of the stirring needle and the internal spiral powder guide groove, the powder is ejected with almost no solidification under high pressure, completing the needle-free injection.

[0036] This embodiment features a needle-free powder injection device that simultaneously enhances injection pressure and prevents excessive powder stacking and agglomeration. The combination of a high-pressure air chamber, conical pressurization, and negative pressure at the port enhances injection pressure. The rotating needle continuously stirs and prevents the powder stacked inside the device from agglomerating. During high-pressure injection, the needle and the internal spiral threaded powder guide groove help to break up the compressed powder, thus preventing stacking and agglomeration. This ensures sufficient pressure and minimal agglomeration during single-hole high-pressure extrusion, significantly improving the success rate of needle-free powder injection.

[0037] In this embodiment, the negative pressure skin contact cover port is set as a latex gasket, which helps to better form a sealed space to fit the skin and achieve negative pressure.

[0038] In this embodiment, the outer shell of the injection device is provided with an anti-slip insulating coating to prevent leakage current from the external motor or internal wiring from damaging the user.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A needle-free powder injection device, characterized in that: The device includes an injection apparatus housing. Inside the housing, a pressurized jet chamber is fixedly installed. A high-pressure solenoid valve is fixedly installed at the lower end of the pressurized jet chamber. A rotating powder dispersion chamber is fixedly connected to the lower end of the high-pressure solenoid valve. An internally rotating anti-caking nozzle is fixedly connected to the lower end of the rotating powder dispersion chamber. A negative pressure skin contact cover surrounds the internally rotating anti-caking nozzle. The pressurized jet chamber includes a stainless steel high-pressure chamber body, an inflation booster, and a conical pressurized bottle mouth. The conical pressurized bottle mouth is fixedly connected to the high-pressure solenoid valve. A shock-absorbing fixing sleeve is filled between the stainless steel high-pressure chamber body and the injection apparatus housing. The rotating powder dispersion chamber includes a funnel-shaped rotating wall chamber. An electric rotating sleeve is fixedly installed on the outer side of the funnel-shaped rotating wall chamber. The top of the funnel-shaped rotating wall chamber is fixedly connected to the high-pressure solenoid valve via a sealed bearing sleeve. A discrete rotating stirring needle is fixedly installed inside the funnel-shaped rotating wall chamber. The internally rotating anti-caking nozzle includes a direct spray pipe. An internally rotating threaded powder guiding groove is fixedly installed inside the direct spray pipe.

2. The needle-free powder injection device according to claim 1, characterized in that: A one-way solenoid valve is fixedly connected between the negative pressure skin contact cover and the direct spray pipe. A negative pressure adsorption suction tube is connected to the side of the negative pressure skin contact cover. A negative pressure suction machine is connected to the outside of the negative pressure adsorption suction tube. The negative pressure suction machine is fixedly installed on the side wall of the injection device housing.

3. The needle-free powder injection device according to claim 1, characterized in that: The top of the injection device housing is provided with a discharge port and a control button. The discharge port is connected to the stainless steel high-pressure chamber through a one-way feeding pipe. An electromagnetic check valve is fixedly installed on the one-way feeding pipe. The control button is connected to the air inflator, high-pressure solenoid valve, electric rotating sleeve, one-way solenoid valve and negative pressure suction machine through circuits.

4. The needle-free powder injection device according to claim 1, characterized in that... The negative pressure skin contact cover port is equipped with a latex gasket.

5. The needle-free powder injection device according to claim 1, characterized in that... The outer shell of the injection device is provided with an anti-slip insulating coating.

Images