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CN-224207181-U - Pre-charging type electronic injection device

CN224207181UCN 224207181 UCN224207181 UCN 224207181UCN-224207181-U

Abstract

The utility model provides a pre-charging type electronic injection device which comprises an outer sleeve, a pen cover, an electronic injection module, a grating feedback module and a control module, wherein the outer sleeve and the pen cover are detachably connected, the electronic injection module is arranged in the outer sleeve and is used for realizing an injection process, the grating feedback module is arranged in the outer sleeve and is fixedly connected with the electronic injection module, and the control module is in communication connection with the electronic injection module and the grating feedback module and is used for receiving information of the grating feedback module.

Inventors

  • ZHANG ZHUXIN
  • XIAO DEJING
  • XIN HAIXIANG
  • QIAN FUSEN

Assignees

  • 北京伏尔特技术有限公司

Dates

Publication Date
20260508
Application Date
20250507

Claims (10)

  1. 1. A pre-filled electronic injection device comprising an outer sleeve (1) and a pen cap (2), said outer sleeve (1) and pen cap (2) being detachably connected, characterized in that said device further comprises: the electronic injection module is arranged in the outer sleeve (1) and is used for realizing the injection process of the liquid medicine; the grating feedback module is arranged in the outer sleeve (1) and is fixedly connected with the electronic injection module; And the control module is in communication connection with the electronic injection module and the grating feedback module and is used for receiving the information of the grating feedback module.
  2. 2. The pre-charging type electronic injection device according to claim 1, wherein the electronic injection module comprises a motor (3), a screw rod (4) and a push rod (5), an output shaft of the motor (3) is connected with one end of the screw rod (4), and when the motor (3) rotates, the output shaft of the motor (3) drives the screw rod (4) to rotate; The other end of the screw rod (4) is connected with one end of the push rod (5) through threads, and when the screw rod (4) rotates, the push rod (5) is driven to do linear motion.
  3. 3. The pre-charge type electronic injection device according to claim 2, wherein the electronic injection module further comprises a motor fixing upper frame (6) and a motor fixing lower frame (7), the motor fixing upper frame (6) and the motor fixing lower frame (7) are both arranged outside the motor (3), the motor fixing upper frame (6) is located at one end of the motor (3) far away from the screw rod (4), and the motor fixing lower frame (7) is located at one end of the motor (3) close to the screw rod (4).
  4. 4. A pre-filled electronic injection device according to claim 3, characterized in that the grating feedback module comprises a grating sensor (8) and a grating gear (9), the grating gear (9) is arranged at one end of the motor (3) far away from the screw rod (4), and when the motor (3) rotates, the grating gear (9) is driven to rotate; The grating sensor (8) is arranged at one end of the motor (3) and is connected with the grating gear (9) through infrared signal communication.
  5. 5. The pre-charge electronic injection device according to claim 2, further comprising a power supply module arranged at an end of the motor (3) remote from the screw (4), the power supply module comprising a battery (10) and a battery holder (11), the battery (10) being arranged inside the battery holder (11); The power supply module further comprises a flexible board (12), the flexible board (12) comprises an anode and a cathode, and the anode and the cathode of the flexible board (12) are respectively connected with the anode and the cathode of the battery (10).
  6. 6. The pre-filled electronic injection device of claim 5 further comprising a dose input module disposed at one end of the power module, the dose input module being fixedly connected to the power module, the dose input module being configured to set a dose of medical fluid to be injected.
  7. 7. The pre-filled electronic injection device according to claim 6, wherein the dose input module comprises a dose setting knob (13) and a potentiometer (14), the dose setting knob (13) being fixedly connected with the potentiometer (14).
  8. 8. The pre-filled electronic injection device according to claim 1, further comprising an injection button (15) arranged on the surface of the casing (1) for receiving a user's button operation; The injection button (15) is in communication connection with the control module.
  9. 9. The prefilled electronic injection device according to claim 2, characterized in that it further comprises a medicine bottle (16) and a cartridge holder (17), said medicine bottle (16) and cartridge holder (17) being both provided inside said cap (2), one end of said medicine bottle (16) being connected to the other end of said push rod (5), the other end of said medicine bottle (16) being connected to said cartridge holder (17), said medicine bottle (16) being for loading an injection liquid medicine, said cartridge holder (17) being for fixing and supporting said medicine bottle (16).
  10. 10. The prefilled electronic injection device according to claim 9, wherein a piston is arranged in the drug vial (16), said piston being fixedly connected to the push rod (5), and when the push rod (5) moves linearly, the piston is pushed forward for infusion of the drug solution.

Description

Pre-charging type electronic injection device Technical Field The utility model relates to the technical field of medical injection administration, in particular to a pre-charging type electronic injection device. Background In the field of modern medical injection administration, mechanical prefilled injection pens are widely used for their portability and ease of operation. The device is generally composed of a medical plastic pen body, a prefilled cartridge, a mechanical transmission part (such as a screw rod, a gear set or a spring push rod) and a needle head assembly, wherein the pen body is based on the human engineering design, the surface of the pen body is provided with anti-skid patterns to enhance the holding stability, the prefilled cartridge is made of glass or polymer materials, the inside of the prefilled cartridge is prefilled with fixed dose medicines, the two ends of the prefilled cartridge are respectively connected with the needle head assembly and the mechanical transmission mechanism, a user triggers the mechanical transmission through rotating a knob or pressing the push rod to drive a cartridge piston to finish medicine injection, and the needle head assembly is generally provided with a protective sleeve to ensure the use safety. However, the existing mechanical prefilled injection device has the remarkable defect that a mechanical transmission part is easy to generate idle stroke or transmission lag due to machining tolerance, assembly clearance and long-term abrasion, so that the deviation accumulation of the injection stroke and a theoretical value is caused. The mechanical transmission mechanism adopts a fixed injection force output mode, the injection pressure and speed cannot be dynamically regulated according to the viscosity of the liquid medicine, the mechanical parts are easy to fatigue deformation or wear after frequent use, the transmission efficiency is reduced, the injection resistance is uneven, and the service life and the administration consistency of the device are seriously affected. Thus, the prior art is still to be further developed. Disclosure of utility model The utility model aims to overcome the technical defects and provide a pre-charging type electronic injection device to solve the problems in the prior art. To achieve the above object, according to a first aspect of the present utility model, there is provided a prefilled electronic injection device, comprising a casing and a cap, the casing and the cap being detachably connected, the device further comprising: The electronic injection module is arranged inside the outer sleeve and is used for realizing the injection process of the liquid medicine; The grating feedback module is arranged in the outer sleeve and is fixedly connected with the electronic injection module; And the control module is in communication connection with the electronic injection module and the grating feedback module and is used for receiving the information of the grating feedback module. Specifically, the electronic injection module comprises a motor, a screw rod and a push rod, wherein an output shaft of the motor is connected with one end of the screw rod, and when the motor rotates, the output shaft of the motor drives the screw rod to rotate; The other end of the screw rod is connected with one end of the push rod through threads, and when the screw rod rotates, the push rod is driven to do linear motion. Specifically, the electronic injection module further comprises a motor fixing upper frame and a motor fixing lower frame, wherein the motor fixing upper frame and the motor fixing lower frame are both arranged outside the motor, the motor fixing upper frame is located at one end of the motor away from the screw rod, and the motor fixing lower frame is located at one end of the motor close to the screw rod. Specifically, the grating feedback module comprises a grating sensor and grating teeth, wherein the grating gear is arranged at one end of the motor far away from the screw rod, and when the motor rotates, the grating gear is driven to rotate; The grating sensor is arranged at one end of the motor and is connected with the grating gear through infrared signal communication. Specifically, the device also comprises a power supply module, wherein the power supply module is arranged at one end of the motor far away from the screw rod, the power supply module comprises a battery and a battery seat, and the battery is arranged in the battery seat; The power supply module further comprises a flexible plate, the flexible plate comprises an anode and a cathode, and the anode and the cathode of the flexible plate are respectively connected with the anode and the cathode of the battery. Specifically, the device also comprises a dosage input module which is arranged at one end of the power supply module and fixedly connected with the power supply module, and the dosage input module is used for setting the dosage of the liquid medici