Powder needleless injection device with automatic medicine filling and boosting functions

Abstract

The invention relates to an automatic medicine filling and boosting powder needleless injection device, which belongs to the technical field of medical instruments and comprises an automatic medicine filling assembly bin, an air pressure type injection generator, a plug taking and medicine filling area, an automatic medicine tube assembly area, a medicine powder adding port, a medicine tube imbedding port and an injector assembly port. According to the powder needleless injection device provided with the automatic medicine filling structure, the automatic medicine tube assembling structure and the automatic pressure control and boosting structure at the same time, by means of the automatic medicine filling assembling bin, powder medicine is automatically and rapidly filled into a medicine tube, and the medicine tube is automatically replaced and assembled to a needleless injector; the injection efficiency of medicine filling assembly is greatly improved, the air pressure type injection generator with the pressure induction function is utilized, direct induction pressurization to a target set value is facilitated, injection is conducted, the total injection pressure is guaranteed, and meanwhile the injection efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to a powder needle-free injection device with automatic medicine filling and pressure boosting. Background Art

[0002] Needle-free injection is achieved by a needle-free injection pusher that generates a certain pressure through a mechanically stable annular compression spring system. Under the action of pressure, the drug liquid or powder is pushed and diffused into the patient's subcutaneous tissue. However, since the drug powder is in powder form, the operation of taking the powder and filling it into the drug tube is far less convenient and smooth than taking the liquid drug. Therefore, when performing needle-free injection of powdered drugs, there are huge differences between the operations of taking the drug and filling it into the drug tube and the subsequent setting of the injection pressure and the liquid state. Therefore, it is extremely important to design an automated drug filling and boosting device specifically for needle-free injection of powdered drugs.

[0003] However, the current prior art still uses needle-free syringes for liquid drugs for needle-free injection of powdered drugs. When taking powdered drugs and filling them into medicine tubes, since the powdered drugs are easily accumulated and blocked the nozzle of the medicine tube, it is necessary to slowly inhale the powdered drugs repeatedly, which is complicated and inefficient. Secondly, if the pressure for injecting powdered drugs is too high, the powdered drugs in the medicine tube will be squeezed into a coagulated mass, which will make it impossible to spray out and penetrate into the subcutaneous tissue. If the pressure is too low, the powdered drugs cannot be injected completely at one time. Therefore, multiple injections are often used to inject the powdered drugs into the human body. However, conventional needle-free syringes need to manually rotate and push the syringe body to complete the pressurization operation. Repeated operations will greatly reduce the injection efficiency and affect the patient's use. Summary of the invention

[0004] In view of this, the purpose of the present invention is to propose a powder needle-free injection device with automatic drug filling and pressure boosting. By setting up a powder needle-free injection device with automatic drug filling structure, automatic drug tube assembly structure and automatic pressure control and boosting structure, the problem of complex and inefficient manual operation of filling powder medicine caused by the lack of a structure in the prior art that can automatically and quickly fill powder medicine into a drug tube and automatically replace and assemble the drug tube onto a needle-free syringe is solved, and the problem of low accuracy of manual pressure boost adjustment due to the lack of an automatic sensing pressure control and automatic pressure boosting needle-free injection structure easily leading to insufficient injection pressure and injection failure, as well as complicated and inefficient pressure boosting operation is solved.

[0005] The present invention is achieved through the following technical solutions:

[0006] A powder needle-free injection device with automatic filling and pressure-boosting comprises an automatic filling and assembly bin and a pneumatic injection generator. The automatic filling and assembly bin is provided with a plug-removing and filling area and an automatic medicine tube assembly area. The top of the automatic filling and assembly bin is provided with a medicine powder adding port, a medicine tube placement port and a syringe assembly port. The pneumatic injection generator passes through the syringe assembly port and completes assembly with the medicine tube to be injected in the automatic medicine tube assembly area.

[0007] Furthermore, the pneumatic injection generator includes an injection generator body, a pressure-resistant gas chamber is arranged inside the injection generator body, an electric booster is fixedly arranged at the rear end of the pressure-resistant gas chamber, an electric spring air valve is fixedly arranged at the front end of the pressure-resistant gas chamber, a pressure sensor is arranged outside the electric booster, and a medicine tube access port is fixedly arranged at the front end of the injection generator body.

[0008] Furthermore, the pressure-resistant gas chamber and the injection generator body are both made of stainless steel.

[0009] Furthermore, the automated medicine filling and assembly bin includes a central rotating shaft, an electric slide groove is opened on the side of the central rotating shaft, an electric telescopic slide rod is slidably arranged inside the electric slide groove, an electric rotating base is arranged at the outer end of the electric telescopic slide rod, and a medicine tube limiting card sleeve is fixedly arranged on the upper end of the electric rotating base.

[0010] Furthermore, an electric clamping limit buckle is fixedly provided at the bottom end of the medicine tube limit card-in sleeve.

[0011] Furthermore, the plug removal and filling area includes a medicine tube placement structure, a plug removal and filling structure, and an automatic medicine filling structure. The medicine tube placement structure is composed of the medicine tube insertion port and a medicine tube guide sliding groove fixedly arranged at the lower end of the medicine tube insertion port. The plug removal and filling structure is composed of a connecting rod fixedly arranged at the top of the middle rotating shaft and a negative pressure plug suction device fixedly arranged at the end of the connecting rod. The automatic medicine filling structure is composed of the medicine powder adding port and a medicine powder introducer fixedly arranged at the lower end of the medicine powder adding port.

[0012] Furthermore, a stainless steel protective shell is provided outside the automated medicine filling and assembly chamber.

[0013] Furthermore, the size of the syringe assembly port matches the external size of the pneumatic injection generator.

[0014] Furthermore, the medicine tube insertion port and the top of the syringe assembly port are both provided with guide notches.

[0015] The beneficial effects of the present invention are:

[0016] The present invention provides a powder needle-free injection device with an automated medicine filling structure, an automated medicine tube assembly structure and an automated pressure control and boosting structure. The automated medicine filling and assembly bin is used to automatically and quickly fill the powder medicine into the medicine tube and automatically replace and assemble the medicine tube onto the needle-free syringe, thereby greatly improving the efficiency of medicine filling, assembly and injection. The use of a pneumatic injection generator with pressure sensing is beneficial for directly sensing the pressure increase to the target set value for injection, thereby ensuring the injection pressure and greatly improving the injection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the overall structure diagram of the assembly;

[0018] Figure 2 This is the overall structure diagram of the shelling of the automated filling and assembly chamber;

[0019] Figure 3 This is a front view of the overall structure of the automatic filling and assembly chamber shelling;

[0020] Figure 4 It is a top view of the overall structure of the automatic filling and assembly chamber shelling;

[0021] Figure 5 It is a partial cross-sectional view of the overall structure of the automatic filling and assembly chamber shelling;

[0022] Figure 6 Diagram of the internal structure of the medicine tube assembled for the pneumatic injection generator.

[0023] Description of reference numerals:

[0024] 1. Automatic medicine filling and assembly chamber; 2. Pneumatic injection generator; 3. Plug removal and medicine filling area; 4. Automatic medicine tube assembly area; 5. Medicine powder addition port; 6. Medicine tube insertion port; 7. Syringe assembly port; 8. Middle rotating shaft; 9. Electric slide; 10. Electric telescopic slide; 11. Electric rotating base; 12. Medicine tube limit card insertion sleeve; 13. Electric clamping limit buckle; 14. Medicine tube insertion structure; 15. Plug removal and filling structure; 16. Automatic medicine filling structure; 17. Medicine tube guide sliding groove; 18. Connecting rod; 19. Negative pressure plug suction device; 20. Medicine powder introducer; 21. Injection generator body; 22. Pressure-resistant air chamber; 23. Electric supercharger; 24. Electric spring air valve; 25. Pressure sensor; 26. Medicine tube access port; 27. Rotation adjustment switch. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] 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 usually placed when in use, which is only for the convenience of describing the present invention 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 limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0029] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0030] like Figure 1-5As shown, an embodiment of the present invention is: an automatic filling and pressure-boosting powder needle-free injection device, comprising an automatic filling and assembly chamber 1 and a pneumatic injection generator 2, a plug-taking and filling area 3 and an automatic assembly medicine tube area 4 are arranged inside the automatic filling and assembly chamber, a medicine powder adding port 5, a medicine tube insertion port 6 and a syringe assembly port 7 are opened on the top of the automatic filling and assembly chamber, the automatic filling and assembly chamber comprises a middle rotating shaft 8, an electric slide 9 is opened on the side of the middle rotating shaft, an electric telescopic slide rod 10 is slidably arranged inside the electric slide rod, an electric rotating base 11 is arranged at the outer end of the electric telescopic slide rod, and a medicine tube limit card sleeve 12 is fixedly arranged on the upper end of the electric rotating base. An electric clamping limit buckle 13 is fixedly arranged at the bottom end of the medicine tube limit card sleeve, which is conducive to firmly fixing the medicine tube in the medicine tube limit card sleeve. The plug-taking and drug-filling area includes a drug tube placement structure 14, a plug-taking and filling structure 15, and an automatic drug-filling structure 16. The drug tube placement structure is composed of a drug tube placement inlet and a drug tube guide sliding groove 17 fixedly arranged at the lower end of the drug tube placement inlet. The plug-taking and filling structure is composed of a connecting rod 18 fixedly arranged at the top of the middle rotating shaft and a negative pressure plug suction device 19 fixedly arranged at the end of the connecting rod. The automatic drug-filling structure is composed of a drug powder addition inlet and a drug powder introducer 20 fixedly arranged at the lower end of the drug powder addition inlet. The size of the syringe assembly port matches the external size of the pneumatic injection generator, which is convenient for inserting the drug tube when assembling it. Guide grooves are provided on the top of the drug tube placement inlet and the syringe assembly port.

[0031] The pneumatic injection generator includes an injection generator body 21, a pressure-resistant gas chamber 22 is arranged inside the injection generator body, an electric booster 23 is fixedly arranged at the rear end of the pressure-resistant gas chamber, an electric spring air valve 24 is fixedly arranged at the front end of the pressure-resistant gas chamber, a pressure sensor 25 is arranged outside the electric booster, a medicine tube access port 26 is fixedly arranged at the front end of the injection generator body, and the pneumatic injection generator passes through the syringe assembly port and completes the assembly with the medicine tube to be injected in the automatic assembly medicine tube area. A rotation adjustment switch 27 is fixedly arranged on the top of the automatic filling and assembly chamber.

[0032] When this embodiment is implemented, the switch of the automatic medicine filling and assembly bin is first started so that the medicine tube limit card sleeve rises to the medicine tube insertion entrance under the drive of the electric telescopic slide bar, and then the medicine tube is placed in the medicine tube limit card sleeve. The electric clamping limit buckle in the medicine tube limit card sleeve will fix the medicine tube, and then the switch is controlled to rotate the middle rotating shaft, drive the medicine tube limit card sleeve to move to the plug-taking and filling area and then align with the plug-taking and filling structure, drive the negative pressure plug suction device to generate negative pressure to suck the piston in the medicine tube, and then under the drive of the electric telescopic slide bar, the medicine tube is downward to pull out the piston, and then drive the medicine tube limit card sleeve to move to the bottom of the medicine powder adding port and align with the medicine powder introducer, and then add medicine powder from the outside so that the medicine powder enters the medicine tube, and when the medicine powder addition is completed, the middle rotating shaft is started to rotate, drive the medicine tube limit card sleeve to move to the plug-taking and filling area and then align with the plug-taking and filling structure, and then drive the electric telescopic slide bar to rise so that the piston is re-inserted into the medicine tube body, thereby completing the medicine filling operation.

[0033] Then, the middle rotating shaft is started to drive the medicine tube to the lower end of the syringe assembly port, and the needle-free syringe is inserted from the syringe assembly port to connect the medicine tube access port with the medicine tube, and the electric rotating base is started to rotate to drive the medicine tube and the syringe to be tightened and assembled.

[0034] The pneumatic injection generator only needs to start the electric boost valve to increase the internal gas pressure. When the pressure sensor senses that the pressure value has reached the target value, it stops the pressure increase, and then it is aimed at the patient's injection site to start, so that the electric spring air valve opens, and the high-pressure air flow is ejected to push the powder in the medicine tube to spray out and complete the injection. The entire process of turning the adjustment switch controls each component in the automated filling assembly bin.

[0035] This embodiment provides a powder needle-free injection device that has an automated drug filling structure, an automated drug tube assembly structure, and an automated pressure control and boosting structure. The automated drug filling and assembly bin is utilized to automatically and quickly fill the powder medicine into the drug tube and automatically replace and assemble the drug tube onto the needle-free syringe, thereby greatly improving the efficiency of drug filling, assembly, and injection. The use of a pressure-sensitive pneumatic injection generator is beneficial for directly sensing the pressure increase to the target set value for injection, thereby ensuring the injection pressure and greatly improving the injection efficiency.

[0036] In this embodiment, the pressure-resistant gas chamber and the injection generator body are both made of stainless steel, which is beneficial to ensure normal use without deformation under high pressure. A stainless steel protective shell is provided on the outside of the automated filling and assembly chamber, which is beneficial to protect the internal device from external damage.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A powder needle-free injection device with automatic drug filling and pressure boosting, characterized in that: The invention comprises an automatic medicine filling and assembly bin and a pneumatic injection generator. The automatic medicine filling and assembly bin is provided with a plug-removing and medicine filling area and an automatic medicine tube assembly area. The top of the automatic medicine filling and assembly bin is provided with a medicine powder adding port, a medicine tube placement port and a syringe assembly port. The pneumatic injection generator passes through the syringe assembly port and completes assembly with the medicine tube to be injected in the automatic medicine tube assembly area.

2. The automatic powder needle-free injection device with drug filling and pressure boosting according to claim 1, characterized in that: The pneumatic injection generator includes an injection generator body, a pressure-resistant gas chamber is arranged inside the injection generator body, an electric booster is fixedly arranged at the rear end of the pressure-resistant gas chamber, an electric spring air valve is fixedly arranged at the front end of the pressure-resistant gas chamber, a pressure sensor is arranged outside the electric booster, and a medicine tube access port is fixedly arranged at the front end of the injection generator body.

3. The automatic powder injection device with drug filling and pressure boosting according to claim 2, characterized in that: The pressure-resistant gas chamber and the injection generator body are both made of stainless steel.

4. The automatic powder injection device with drug filling and pressure boosting according to claim 3, characterized in that: The automated medicine filling and assembly bin comprises a central rotating shaft, a side of the central rotating shaft is provided with an electric slide groove, an electric telescopic slide rod is slidably arranged inside the electric slide groove, an electric rotating base is arranged at the outer end of the electric telescopic slide rod, and a medicine tube limiting card sleeve is fixedly arranged at the upper end of the electric rotating base.

5. The automatic powder injection device with drug filling and pressure boosting according to claim 4, characterized in that: An electric clamping limit buckle is fixedly arranged at the bottom end of the medicine tube limit clamping sleeve.

6. The automatic powder injection device with drug filling and pressure boosting according to claim 5, characterized in that: The plug removal and medicine filling area includes a medicine tube placement structure, a plug removal and filling structure and an automatic medicine filling structure. The medicine tube placement structure is composed of the medicine tube placement inlet and a medicine tube guide sliding groove fixedly arranged at the lower end of the medicine tube placement inlet. The plug removal and filling structure is composed of a connecting rod fixedly arranged at the top of the middle rotating shaft and a negative pressure plug suction device fixedly arranged at the end of the connecting rod. The automatic medicine filling structure is composed of the medicine powder adding inlet and a medicine powder introducer fixedly arranged at the lower end of the medicine powder adding inlet.

7. The automatic powder needle-free injection device with drug filling and pressure boosting according to claim 1, characterized in that : A stainless steel protective shell is arranged outside the automated medicine filling and assembly chamber.

8. The automatic powder needle-free injection device with drug filling and pressure boosting according to claim 1, characterized in that :The size of the syringe assembly port matches the external size of the pneumatic injection generator.

9. The automatic powder needle-free injection device with drug filling and pressure boosting according to claim 1, characterized in that The medicine tube insertion port and the top of the syringe assembly port are both provided with guide grooves.

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