Powder needleless injection pressure monitoring device

Abstract

The invention relates to a powder needleless injection pressure monitoring device, which belongs to the technical field of medical instruments and comprises a pressure sensing needleless injector main body, a partition pressure reading recording display screen, a main body pressure sensor and a pressure sensing medicine tube. The powder needleless injection pressure monitoring device is provided with a medicine tube pressure intensity monitoring structure, an injector injection generation pressure sensing structure and a pressure value display structure at the same time; the pressure sensors arranged at the top of the injection push rod and the upper end of the injection piston push piece are used for accurately sensing the injection generation pressure intensity and the actual acting pressure intensity value, the real-time pressure during needleless injection is sensed and displayed, the actual pressure value of powder needleless injection can be accurately monitored, effective injection is guaranteed, and the injection efficiency is improved. The action pressure intensity verification sensor is used for sensing the actual action and the maximum pressure intensity value of the medicine powder, and the maximum pressure intensity value is compared with a numerical value detected through sensing, so that the monitoring accuracy is further guaranteed, and accurate and effective pressure-controlled injection is completed.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to a powder needle-free injection pressure monitoring device. 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. Sufficient and effective high pressure is the main factor that makes needle-free injection possible. Therefore, it is extremely important to accurately monitor and display the injection pressure of the needle-free syringe.

[0003] However, the current existing technology does not have a dedicated pressure sensing display device for needle-free syringes. It only relies on the instrument measurement when manufacturing the needle-free syringe, and divides the pressure adjustment structure mark of the needle-free syringe into several levels. Manual adjustment is performed before injection to set the injection pressure. However, the divided pressure adjustment structure has inaccurate and discontinuous pressure values, and the spring that provides pressure will produce irreversible deformation with repeated use of the needle-free syringe, which makes the initial pressure level inaccurate, and ultimately causes the injection pressure value to be unable to be accurately monitored and displayed for accurate adjustment, resulting in the actual injection pressure value not meeting the standard, and ultimately causing the injection to fail or even cause the patient to not get the proper injection amount, affecting treatment and damaging the patient's life and health. Summary of the invention

[0004] In view of this, the purpose of the present invention is to propose a powder needle-free injection pressure monitoring device, which solves the problem in the prior art that there is a lack of a device that can sense and display the real-time pressure of powder medicine during needle-free injection, resulting in the inability to accurately monitor the actual pressure value of powder needle-free injection and the inability to adjust it in time, resulting in injection failure, affecting patient treatment and even causing the disease to worsen and damage the body.

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

[0006] A powder needle-free injection pressure monitoring device comprises a pressure-sensing needle-free syringe body, a partitioned pressure indication and recording display screen is fixedly arranged on the lower shell of the pressure-sensing needle-free syringe body, a body pressure sensor is arranged in the upper shell of the pressure-sensing needle-free syringe body, a pressure-sensing medicine tube is connected to the upper end of the pressure-sensing needle-free syringe body, and the pressure-sensing medicine tube and the body pressure sensor are connected to the partitioned pressure indication and recording display screen via a wireless signal.

[0007] Furthermore, the pressure-sensing needle-free syringe body includes the upper shell and the lower shell, and the upper shell is rotatably connected to the lower shell via a connecting sleeve.

[0008] Furthermore, an injection button is arranged on the top of the lower shell body, a safety lock is fixedly arranged on the bottom of the injection button, a pressure generating structure is fixedly arranged on the bottom of the safety lock, and a propulsion sleeve is arranged on the bottom of the pressure generating structure.

[0009] Furthermore, an injection push rod is disposed inside the upper shell body, and the injection push rod is connected to the propulsion sleeve through a connecting rod. A drug dosage adjustment wheel is disposed outside the connecting rod, and a wheel lock is disposed at the lower end of the drug dosage adjustment wheel.

[0010] Furthermore, the main body pressure sensor is fixedly arranged on the top of the injection push rod.

[0011] Furthermore, the pressure sensing medicine tube includes a medicine tube body, an injection piston push piece is arranged inside the medicine tube body, an effective pressure sensor is fixedly arranged on the upper end of the injection piston push piece, the lower end of the piston push piece is in contact with and connected to the injection push rod, a powder spray outlet is opened at the top of the medicine tube body, and an effective pressure verification sensor is arranged around the outer side of the powder spray outlet.

[0012] Furthermore, the applied pressure verification sensor comprises an annular pressure-bearing liquid bag, and the annular pressure-bearing liquid bag is externally connected to a maximum applied pressure liquid display plate via a liquid tube.

[0013] Furthermore, the maximum action pressure liquid display plate comprises a pressure scale bar and a liquid flow channel, the liquid flow channel is connected to the pressure scale bar, and the pressure scale bar is made of a cobalt-containing humidity indicator sheet.

[0014] The beneficial effects of the present invention are:

[0015] The present invention provides a powder needle-free injection pressure monitoring device which is equipped with a medicine tube pressure monitoring structure, a syringe injection pressure sensing structure and a pressure value display structure. The pressure sensors arranged at the top of the injection push rod and the upper end of the injection piston push piece accurately sense the injection pressure and the actual action pressure value, and sense and display the real-time pressure during needle-free injection, which is conducive to accurately monitoring the actual pressure value of powder needle-free injection and ensuring effective injection. The action pressure calibration sensor is used to sense the actual action and the maximum pressure of the powder, and the comparison is made with the sensing detection value to further ensure the accuracy of monitoring, thereby completing precise and effective pressure-controlled injection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the overall structure diagram of the assembly;

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

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

[0019] Figure 4 It is a sectional view of the whole assembly;

[0020] Figure 5 This is a top view of the overall assembly;

[0021] Figure 6 This is an enlarged view of the maximum action pressure liquid display plate.

[0022] Description of reference numerals:

[0023] 1. Pressure-sensing needle-free syringe body; 2. Upper shell; 3. Lower shell; 4. Connecting sleeve; 5. Safety lock; 6. Pressure generating structure; 7. Propelling sleeve; 8. Injection push rod; 9. Connecting rod; 10. Drug dosage adjustment wheel; 11. Wheel lock; 12. Partition pressure indication and recording display screen; 13. Main body pressure sensor; 14. Injection button; 15. Drug tube body; 16. Injection piston push piece; 17. Action pressure sensor; 18. Drug powder spray outlet; 19. Action pressure calibration sensor; 20. Annular pressure liquid bag; 21. Maximum action pressure liquid display board; 22. Pressure scale bar; 23. Liquid flow channel. DETAILED DESCRIPTION

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] like Figure 1-6 As shown, an embodiment of the present invention is a powder needle-free injection pressure monitoring device, comprising a pressure-sensing needle-free syringe body 1, the pressure-sensing needle-free syringe body comprising an upper shell 2 and a lower shell 3, the upper shell is rotatably connected to the lower shell through a connecting sleeve 4, a partitioned pressure indication and recording display screen 12 is fixedly arranged on the lower shell, a main body pressure sensor 13 is arranged in the upper shell, an injection button 14 is arranged on the top of the lower shell, a safety lock 5 is fixedly arranged at the bottom of the injection button, a pressure generating structure 6 is fixedly arranged at the bottom of the safety lock, a propulsion sleeve 7 is arranged at the bottom of the pressure generating structure, an injection push rod 8 is arranged inside the upper shell, the injection push rod is connected to the propulsion sleeve through a connecting rod 9, a drug dosage adjusting wheel 10 is arranged outside the connecting rod, a wheel lock 11 is arranged at the lower end of the drug dosage adjusting wheel, the main body pressure sensor is fixedly arranged on the top of the injection push rod,

[0030] A pressure sensing medicine tube is connected to the upper end of the main body of the pressure sensing needle-free syringe. The pressure sensing medicine tube and the main body are connected to the partitioned pressure indication and recording display screen through wireless signals. The pressure sensing medicine tube includes a medicine tube body 15. An injection piston push piece 16 is arranged inside the medicine tube body. An action pressure sensor 17 is fixedly arranged on the upper end of the injection piston push piece. The lower end of the piston push piece is in contact with the injection push rod to facilitate pushing the piston to complete the injection when subsequent pressure is applied. A powder spray outlet 18 is opened on the top of the medicine tube body. An action pressure verification sensor 19 is arranged around the outer side of the powder spray outlet. The action pressure verification sensor includes an annular pressure liquid capsule 20. The annular pressure liquid capsule is externally connected to a maximum action pressure liquid display plate 21 through a liquid tube. The maximum action pressure liquid display plate includes a pressure scale bar 22 and a liquid flow channel 23. The liquid flow channel is connected to the pressure scale bar, and the pressure scale bar is made of a cobalt-containing humidity indicator sheet.

[0031] When implementing this embodiment, firstly, a dry shot is performed to check the pressure value. The pressure generating structure of the pressure-sensing needle-free syringe body is pulled up by rotating the lower shell to drive the spring inside it so that the pressure generating structure starts to store energy. Then, when the pressure indication of the upper shell itself reaches the target indication, the medicine tube body is assembled to the pressure-sensing needle-free syringe body, and then the injection push rod is brought into contact with the injection piston push piece. At this time, the entire device is not filled with medicine, and it is only used as a dry tube injection to check whether the injection pressure provided by the spring is accurate. After completing all the preparations, the injection switch is pressed to unlock the spring, retract it, and restore its deformation to drive the propulsion sleeve forward, squeeze the air, and push the injection push rod to push the injection piston. Push the tablet until it collides with the powder spray outlet. Under the action of pressure, the annular pressure-bearing liquid capsule will be squeezed to generate a liquid column in the liquid flow channel, and then the pressure scale bar will be moistened to change color. The highest scale value is the maximum pressure value. At the same time, the partition pressure indication recording display screen will also display the pressure value of the main body and the pressure value of the injection piston pusher. When this value is the same as the pressure indication on the pressure indicator of the upper shell itself, it proves that the spring pressure is accurate and there is no error. Whenever the difference between the two is large, it proves that the spring has been fatigued and damaged and cannot provide accurate pressure injection. It needs to be replaced, or a dry shot pressure test is performed before each injection. In this way, the injection pressure is accurate.

[0032] In this embodiment, a powder needle-free injection pressure monitoring device is provided which is equipped with a drug tube pressure monitoring structure, a syringe injection pressure sensing structure and a pressure value display structure. The pressure sensors provided at the top of the injection push rod and the upper end of the injection piston push piece accurately sense the injection pressure and the actual action pressure value, and sense and display the real-time pressure during needle-free injection. This is beneficial for accurately monitoring the actual pressure value of powder needle-free injection and ensuring effective injection. The action pressure calibration sensor is used to sense the actual action and the maximum pressure of the powder, and the comparison is made with the sensed detection value to further ensure the accuracy of monitoring and complete accurate and effective pressure-controlled injection.

[0033] In this embodiment, the cobalt-containing humidity indicator sheet changes color when exposed to water and returns to its original color after drying, which is convenient for repeated use.

[0034] 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 pressure monitoring device, characterized in that: It comprises a pressure-sensing needle-free syringe body, wherein a partitioned pressure indication and recording display screen is fixedly arranged on the lower shell of the pressure-sensing needle-free syringe body, a body pressure sensor is arranged in the upper shell of the pressure-sensing needle-free syringe body, a pressure-sensing medicine tube is connected to the upper end of the pressure-sensing needle-free syringe body, and the pressure-sensing medicine tube and the body pressure sensor are connected to the partitioned pressure indication and recording display screen via a wireless signal.

2. A powder needle-free injection pressure monitoring device according to claim 1, characterized in that: The pressure-sensing needle-free syringe body comprises an upper shell and a lower shell, and the upper shell is rotatably connected to the lower shell via a connecting sleeve.

3. A powder needle-free injection pressure monitoring device according to claim 2, characterized in that: An injection button is arranged on the top of the lower shell body, a safety lock is fixedly arranged on the bottom of the injection button, a pressure generating structure is fixedly arranged on the bottom of the safety lock, and a propulsion sleeve is arranged on the bottom of the pressure generating structure.

4. A powder needle-free injection pressure monitoring device according to claim 3, characterized in that: An injection push rod is arranged inside the upper shell body, and the injection push rod is connected with the propulsion sleeve through a connecting rod. A drug dosage adjustment wheel is arranged outside the connecting rod, and a wheel lock is arranged at the lower end of the drug dosage adjustment wheel.

5. A powder needle-free injection pressure monitoring device according to claim 4, characterized in that: The main body pressure sensor is fixedly arranged on the top of the injection push rod.

6. A powder needle-free injection pressure monitoring device according to claim 4, characterized in that: The pressure sensing medicine tube includes a medicine tube body, an injection piston push piece is arranged inside the medicine tube body, an effective pressure sensor is fixedly arranged on the upper end of the injection piston push piece, the lower end of the piston push piece is in contact with and connected to the injection push rod, a medicine powder spray outlet is opened at the top of the medicine tube body, and an effective pressure verification sensor is arranged around the outer side of the medicine powder spray outlet.

7. A powder needle-free injection pressure monitoring device according to claim 6, characterized in that The applied pressure verification sensor comprises an annular pressure-bearing liquid bag, and the annular pressure-bearing liquid bag is externally connected to a maximum applied pressure liquid display plate through a liquid tube.

8. The powder needle-free injection pressure monitoring device according to claim 7, characterized in that The maximum effective pressure liquid display plate includes a pressure scale bar and a liquid flow channel, the liquid flow channel is connected to the pressure scale bar, and the pressure scale bar is made of a cobalt-containing humidity indicator sheet.

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