CN212491024U - Electromagnetic impact type needle-free injection device - Google Patents
Electromagnetic impact type needle-free injection device Download PDFInfo
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- CN212491024U CN212491024U CN202020515753.7U CN202020515753U CN212491024U CN 212491024 U CN212491024 U CN 212491024U CN 202020515753 U CN202020515753 U CN 202020515753U CN 212491024 U CN212491024 U CN 212491024U
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Abstract
An electromagnetic impact type needle-free injection device comprises a medicine storage bottle, a medicine suction and bubble discharge assembly, a striker and a voice coil motor movement assembly. After the voice coil motor rotor is electrified, the voice coil motor rotor retracts into a stator cavity of the voice coil motor, a fixed spacing distance is generated between the voice coil motor rotor and a collision rod at the moment, after the electrification direction of the voice coil motor rotor is changed, the voice coil motor rotor impacts the push rod at a certain initial speed after moving for a certain distance in an accelerating mode, a small amount of medicine in the medicine storage bottle is sprayed out from a nozzle of the medicine storage bottle by high-speed jet flow to puncture skin to generate an injection hole, after the impact is completed, the voice coil motor rotor, the collision rod and the piston push rod have no relative gaps, continuous voltage input slightly smaller than before is provided for the voice coil motor rotor, and residual medicine liquid in the medicine storage bottle is ensured to enter a human body along the injection hole.
Description
Technical Field
The utility model relates to an electromagnetism striking formula needleless injection device especially uses and has had the back electromagnetism kinetic energy striking puncture skin with higher speed in advance to produce the injection orifice, and the reuse lasts electromagnetic thrust and accomplishes surplus liquid medicine and follow the injection orifice and get into the human body, belongs to the medical instrument field.
Background
The needleless injection device utilizes the high-pressure jet principle to lead the liquid medicine to be gathered into a thinner liquid flow which instantly penetrates the skin to enter the subcutaneous tissue.
The kinetic energy of the needle-free injection device which takes a spring and ammunition as kinetic energy in the market at present cannot be accurately adjusted, namely the injection depth and the dosage cannot be accurately adjusted; the high-pressure gas can be used for kinetic energy adjustment, but a high-pressure gas cylinder gas source needs to be carried, so that the carrying is inconvenient, and potential safety hazards exist; the traditional electromagnetic power type needleless injector has the advantages that the electromagnetic power part and the injector piston are always in a fixed connection state, although kinetic energy can be adjusted, in order to provide initial kinetic energy for puncturing the skin, the motor is large in size, and the power and the size needed by a carried power supply are large.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve and carry out the control of medicine efflux energy to the injection overall process, the needleless injection device of electromagnetic force as the power supply should be transported and produced, power pack are bulky, weight is heavier, the higher scheduling problem of cost in order to deal with traditional electromagnetism power pack and syringe piston and be in the solid state of connecing always and bring.
The needleless injection device with percussion burst force and continuous electromagnetic force allows precise control of drug delivery to the human or animal surface with the choice of a smaller volume voice coil motor, less power and smaller size power supply. After the electromagnetic power component is accelerated to a certain speed in advance, the electromagnetic kinetic energy impacts and punctures the skin to generate an injection hole, and then the continuous electromagnetic thrust is used for completing the entrance of the residual liquid medicine into the human body along the injection hole. The electromagnetic impact type needle-free injection device comprises a medicine storage bottle for storing liquid medicine; the medicine suction and air discharge bubble assembly drives the piston push rod to complete the suction of medicine liquid and the air discharge; and a striker for transmitting impact force and subsequent continuous thrust; and a voice coil motor motion assembly.
The power of the medicine suction and bubble discharge assembly is generated by the rotation of the medicine suction motor assembly and can also be generated by the rotation of the finger rotating gear. Wherein the medicine suction motor assembly further comprises a hollow cup motor, and the motor can rotate clockwise and can also rotate anticlockwise. Wherein the medicine suction and bubble discharge assembly further comprises a rotation angle sensor for automatically sensing the rotation angle and the angular speed of the motor. The medicine suction and bubble discharge assembly further comprises a controller and a driver, and the controller obtains the output of the rotation angle sensor feedback automatic adjustment driver. Wherein the drug-sucking motor assembly further comprises a pair of gears. The hollow cup motor rotating shaft is connected with the first gear through a central transition shaft which is connected with the bearing inner ring, and the hollow cup motor shell is connected with the bearing outer ring through a base structure. The rotation of the hollow cup motor is transmitted to the first gear, and the first gear drives the second gear to rotate. The center of the second gear comprises a rectangular hole which is in clearance fit with the square shaft section of the piston push rod. The piston push rod further comprises a piston cylindrical section, a square shaft section and a screw rod thread section. The medicine suction and bubble discharge assembly further comprises a group of nut screws. The screw rod thread section of the piston push rod and the nut form a nut screw rod pair which is used for converting the rotary motion of the gear into the axial displacement of the piston push rod so as to realize the absorption of liquid medicine and the discharge of air bubbles.
The voice coil motor motion assembly comprises a substrate, a voice coil motor rotor and a voice coil motor stator. The voice coil motor motion assembly further comprises a motion control circuit, and the motion control circuit provides kinetic energy for the voice coil motor rotor.
In one embodiment, the controller in the drug and bubble sucking and discharging assembly acquires the output of the rotation angle sensor feedback automatic adjustment driver, controls the voltage value and the voltage sign in the coreless motor to be positive, the coreless motor drives the first gear and the second gear to rotate, the second gear drives the piston push rod to move through the nut-screw pair, so that negative pressure is formed in the drug storage bottle, and external drugs enter the drug storage bottle through the micropores at the end part of the drug storage bottle; after all the medicine to be injected enters the medicine storage bottle, the voltage value and the voltage sign in the coreless motor are controlled to be negative, so that the piston push rod can move in the opposite direction to discharge the air in the medicine storage bottle.
Before liquid medicine injection is carried out, the motion control circuit controls the polarity of voltage in a coil of the rotor of the voice coil motor to be negative, and the rotor of the voice coil motor retracts into a cavity of the stator of the voice coil motor and keeps a certain distance from the piston push rod. And after the rotor of the voice coil motor moves for a certain distance in an accelerating manner, the rotor of the voice coil motor is contacted with the collision rod. The voice coil motor rotor impacts the piston push rod at a certain initial speed, and under the compression of instant impact force, a small amount of medicine in the medicine storage bottle is ejected from the medicine storage bottle nozzle in a high-speed jet flow mode to puncture the skin to generate an injection hole; after the impact is finished, the voice coil motor rotor, the impact rod and the piston push rod have no relative clearance, and after the motor rotor is contacted with the impact rod, the voice coil motor rotor, the impact rod and the piston push rod move simultaneously without relative clearance; in the process of moving simultaneously without relative clearance, providing continuous voltage input slightly smaller than before for the rotor of the voice coil motor, and ensuring that most of liquid medicine in the medicine storage bottle enters a human body along the injection hole; the continuous voltage input is derived from electrical energy provided by the motion control circuit.
Drawings
The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings in which like reference characters refer to the same parts throughout the different views. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention.
FIG. 1 is a schematic view of the structure of the liquid medicine suction and air discharge of the present invention;
FIG. 2 is a schematic view of the impact structure of the present invention;
FIG. 3 is a schematic view of the overall structure of the present invention;
FIG. 4 is a schematic cross-sectional view of the overall structure of the present invention;
the figure shows that: the medicine storage bottle comprises a medicine storage bottle 1, a medicine sucking and bubble discharging assembly 2, a collision rod 3, a voice coil motor moving assembly 4, a voice coil motor rotor 5, a voice coil motor stator 6, a substrate 7, a movement control circuit 8, a piston push rod 9, a medicine sucking motor assembly 10, a hollow cup motor 11, a first gear 12, a second gear 13, a central transition shaft 14 and a base 15.
Detailed Description
The needleless injection device utilizes the high-pressure jet principle to lead the liquid medicine to be gathered into a thinner liquid flow which instantly penetrates the skin to enter the subcutaneous tissue.
The kinetic energy of the needle-free injection device which takes a spring and ammunition as kinetic energy in the market at present cannot be accurately adjusted, namely the injection depth and the dosage cannot be accurately adjusted; the high-pressure gas can be used for kinetic energy adjustment, but a high-pressure gas cylinder gas source needs to be carried, so that the carrying is inconvenient, and potential safety hazards exist; the traditional electromagnetic power type needleless injector has the advantages that the electromagnetic power part and the injector piston are always in a fixed connection state, although kinetic energy can be adjusted, in order to provide initial kinetic energy for puncturing the skin, the motor is large in size, and the power and the size needed by a carried power supply are large.
The needle-free injection device takes electromagnetic force as kinetic energy to control the medicine jet energy in the whole injection process, and solves the problems of large volume, heavy weight and high cost of a power part and a power supply part caused by the fact that the traditional electromagnetic power part and an injector piston are always in a fixed connection state.
The needleless injection device with percussion burst force and continuous electromagnetic force allows precise control of drug delivery to the human or animal surface with the choice of a smaller volume voice coil motor, less power and smaller size power supply. After the electromagnetic power component is accelerated to a certain speed in advance, the electromagnetic kinetic energy impacts and punctures the skin to generate an injection hole, and then the continuous electromagnetic thrust is used for completing the entrance of the residual liquid medicine into the human body along the injection hole. The electromagnetic impact type needleless injection device comprises a medicine storage bottle 1 for storing liquid medicine; the medicine suction and air discharge bubble assembly 2 drives the piston push rod 9 to complete the suction of medicine liquid and the air discharge; and a striker 3 for transmitting impact force and subsequent continuous thrust; and a voice coil motor moving assembly 4.
The power of the medicine suction and bubble discharge assembly 2 is generated by the rotation of the medicine suction motor assembly 10 and can also be generated by rotating a gear by fingers. Wherein the drug-sucking motor assembly 10 further comprises the coreless motor 11, and the coreless motor 11 can rotate clockwise or counterclockwise. Wherein the medicine-sucking air-bubble-discharging assembly 2 further comprises a rotation angle sensor for automatically sensing the rotation angle and the angular speed of the motor. The medicine suction and air bubble discharge assembly 2 further comprises a controller and a driver, and the controller obtains the output of the rotation angle sensor feedback automatic adjustment driver. Wherein the drug uptake motor assembly 10 further comprises a pair of gears. The hollow cup motor 11 is connected with the first gear 12 through the central transition shaft 14, and the shell of the hollow cup motor 11 is connected with the outer ring of the bearing through the base 15 structure. The rotation of the coreless motor 11 is transmitted to the first gear 12, and the first gear 12 drives the second gear 13 to rotate. The center of the second gear 13 comprises a rectangular hole which is in clearance fit with the square shaft section of the piston push rod 9. The piston push rod 9 further comprises a piston cylindrical section, a square shaft section and a screw rod thread section. The medicine sucking and air discharging bubble assembly 2 further comprises a group of nut screws. The screw thread section of the piston push rod 9 and the nut form a nut screw pair which is used for converting the rotary motion of the gear into the axial displacement of the piston push rod 9 so as to realize the absorption of liquid medicine and the discharge of air bubbles.
The voice coil motor motion assembly 4 comprises a base plate 7, a voice coil motor rotor 5 and a voice coil motor stator 6. Wherein the voice coil motor moving assembly 4 further comprises a motion control circuit 8 providing kinetic energy to the voice coil motor mover 5.
In one embodiment, the controller in the drug inhalation and air exhaust bubble assembly 2 obtains the output of an angle sensor feedback automatic adjustment driver, controls the magnitude and the sign of voltage in the coreless motor 11 to be positive, the coreless motor 11 drives the first gear 12 and the second gear 13 to rotate through the central transition shaft 14, the second gear 13 drives the piston push rod 9 to move through a nut-screw pair, so as to form negative pressure in the drug storage bottle 1, and external drug enters the drug storage bottle 1 through a micropore at the end of the drug storage bottle 1; after all the medicine to be injected enters the medicine storage bottle 1, the voltage value and the voltage sign in the coreless motor 11 are controlled to be negative, so that the piston push rod 9 can move in the opposite direction to discharge the air in the medicine storage bottle.
Before liquid medicine injection is carried out, the motion control circuit 8 controls the voltage polarity in the voice coil motor rotor 5 to be negative, and the voice coil motor rotor 5 retracts into the cavity of the voice coil motor stator 6 and keeps a certain distance from the piston push rod 9. After the voice coil motor rotor 5 moves for a certain distance in an accelerating manner, the voice coil motor rotor contacts with the impact bar 3. The voice coil motor rotor 5 impacts the piston push rod 9 at a certain initial speed, and under the compression of instant impact force, a small amount of medicine in the medicine storage bottle 1 is ejected from a nozzle of the medicine storage bottle 1 in a high-speed jet manner to puncture the skin to generate an injection hole; after the impact is finished, the voice coil motor rotor 5, the impact rod 3 and the piston push rod 9 have no relative clearance, and after the voice coil motor rotor 5 is contacted with the impact rod 3, the voice coil motor rotor 5, the impact rod 3 and the piston push rod 9 move simultaneously without relative clearance; in the process of moving simultaneously without relative gaps, continuous voltage input slightly smaller than before is provided for the rotor 5 of the voice coil motor, and the vast majority of liquid medicine in the medicine storage bottle 1 is ensured to enter a human body along an injection hole; the continuous voltage input is derived from the electrical energy provided by the motion control circuit 8.
Claims (13)
1. An electromagnetic impact type needleless injection device is characterized by comprising a medicine storage bottle (1) for storing liquid medicine; a medicine suction and air discharge bubble component (2) which drives a piston push rod (9) to complete the suction of medicine liquid and the air discharge; and a striker (3) for transmitting the impact force and the subsequent continuous thrust; and a voice coil motor moving assembly (4).
2. An electromagnetic impact type needle-free injection device according to claim 1, wherein the power of the drug-sucking air bubble-discharging assembly (2) is generated by the rotation of the drug-sucking motor assembly (10) and can also be generated by the rotation of a gear by fingers.
3. An electromagnetic impact type needle-free injection device according to claim 1, wherein the piston rod (9) further comprises a piston cylinder section, a square shaft section and a screw thread section.
4. An electromagnetic percussion needleless injection device according to claim 1, wherein the voice coil motor motion assembly (4) comprises a base plate (7), a voice coil motor mover (5), and a voice coil motor stator (6).
5. An electromagnetic impact needleless injection device according to claim 1, characterized in that the drug-aspirating air bubble assembly (2) comprises a set of nut screws for translating the rotational movement of the gear into an axial displacement from the piston pusher (9).
6. An electromagnetic impact needleless injection device in accordance with claim 2 wherein the drug aspirating motor assembly (10) further comprises a hollow cup motor (11) which can be rotated either clockwise or counterclockwise.
7. An electromagnetic impact needleless injection device according to claim 2, wherein the drug aspirating motor assembly (10) further comprises a pair of gears.
8. An electromagnetic percussion needleless injection device according to claim 1, wherein the drug aspirating and bubble expelling assembly (2) further comprises a rotation angle sensor for automatically sensing the rotation angle and angular velocity of the motor.
9. An electromagnetic percussion needleless injection device according to claim 1, wherein the drug-aspirating and bubble-expelling assembly (2) further comprises a controller and an actuator, the controller obtaining the output of the rotation angle sensor feedback automatic adjustment actuator.
10. An electromagnetic percussion needle-free injection device according to claim 7, in which the pair of gears comprises a first gear (12) and a second gear (13).
11. An electromagnetic impact needleless injection device according to claim 10, wherein said first gear (12) is connected for rotation with the hollow cup motor (11) by a central transition shaft (14).
12. An electromagnetic impact needleless injection device according to claim 10, characterized in that the centre of said second gear wheel (13) comprises a rectangular hole which is a clearance fit with a square shaft section of said piston pusher (9).
13. An electromagnetic percussion needleless injection device according to claim 1, wherein the voice coil motor motion assembly (4) comprises motion control circuitry (8) providing kinetic energy to a voice coil motor mover (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020515753.7U CN212491024U (en) | 2020-04-10 | 2020-04-10 | Electromagnetic impact type needle-free injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020515753.7U CN212491024U (en) | 2020-04-10 | 2020-04-10 | Electromagnetic impact type needle-free injection device |
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| CN212491024U true CN212491024U (en) | 2021-02-09 |
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| CN202020515753.7U Active CN212491024U (en) | 2020-04-10 | 2020-04-10 | Electromagnetic impact type needle-free injection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113274588A (en) * | 2021-05-19 | 2021-08-20 | 青岛瑞斯凯尔生物科技有限公司 | Portable antigen needleless injector and working method thereof |
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2020
- 2020-04-10 CN CN202020515753.7U patent/CN212491024U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113274588A (en) * | 2021-05-19 | 2021-08-20 | 青岛瑞斯凯尔生物科技有限公司 | Portable antigen needleless injector and working method thereof |
| CN113274588B (en) * | 2021-05-19 | 2022-08-26 | 青岛瑞斯凯尔生物科技有限公司 | Portable antigen needleless injector and working method thereof |
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