CN111467612A - Needle head quick-release structure of electronic injection pen and electronic injection pen - Google Patents

Needle head quick-release structure of electronic injection pen and electronic injection pen Download PDF

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Publication number
CN111467612A
CN111467612A CN202010429157.1A CN202010429157A CN111467612A CN 111467612 A CN111467612 A CN 111467612A CN 202010429157 A CN202010429157 A CN 202010429157A CN 111467612 A CN111467612 A CN 111467612A
Authority
CN
China
Prior art keywords
sliding
injection pen
needle
electronic injection
release structure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010429157.1A
Other languages
Chinese (zh)
Inventor
陈松
谌辉
曹兵
陆慧云
孙振宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuxi Hongyu Medical Technology Co ltd
Original Assignee
Wuxi Hongyu Medical Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuxi Hongyu Medical Technology Co ltd filed Critical Wuxi Hongyu Medical Technology Co ltd
Priority to CN202010429157.1A priority Critical patent/CN111467612A/en
Publication of CN111467612A publication Critical patent/CN111467612A/en
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3202—Devices for protection of the needle before use, e.g. caps
    • A61M5/3204—Needle cap remover, i.e. devices to dislodge protection cover from needle or needle hub, e.g. deshielding devices

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  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

The invention discloses a needle head quick-release structure of an electronic injection pen and the electronic injection pen, wherein the needle head quick-release structure of the electronic injection pen comprises a needle head and a quick-release assembly, the needle head is detachably arranged at the front end of a medicine storage bin, the medicine storage bin is of a side-flip structure, the medicine storage bin is arranged on one side of a sliding base, the sliding base can be arranged in a shell in a reciprocating sliding manner, a driving device for driving the sliding base to move in a reciprocating manner is arranged in the shell, the quick-release assembly comprises a contact switch, a switch shifting block and a protective cover for covering the needle head, the contact switch is fixed in the shell, and the switch shifting block is fixed on the protective cover. Compared with the prior art, the invention can quickly realize the replacement of the needle head, and has convenient and simple operation.

Description

Needle head quick-release structure of electronic injection pen and electronic injection pen
Technical Field
The invention relates to the technical field of medical equipment, in particular to a needle head quick-release structure of an electronic injection pen and the electronic injection pen.
Background
Chinese patent application No. 201910937222.9 discloses a full-automatic electronic insulin injection pen, which comprises an outer shell and a sliding base, one side of the sliding base is provided with a drug storage bin with a side-flip cover, a drug bottle is installed in the drug storage bin, a drug administration injection driving device is arranged on the sliding base in cooperation with the drug bottle, the drug administration injection driving device comprises a driving rod, a needle implantation driving device is arranged on the sliding base, a drug storage bin safety device which is configured to enable the drug storage bin to be opened after the driving rod retracts to the right position is arranged between the outer shell and the drug storage bin, and a needle safety device which is configured to enable the drug storage bin to be opened after the needle is completely detached is arranged at the front end of the drug storage bin. The full-automatic electronic insulin injection pen is simple in structure, convenient and quick to change the medicine and stable and reliable in operation; and the medicine storage bin can be opened only after the injection needle is taken down and the driving rod is completely retracted to the right position, so that misoperation of a user is avoided, and the safety and reliability of the full-automatic injector are improved.
However, the sliding base of the fully automatic electronic insulin injection pen is located in the outer shell, only the injection needle passes through the hole on the outer shell and protrudes, but the outer shell is of a closed structure, and when the injection needle needs to be replaced, the operation is very inconvenient, so that the problem is urgently needed to be solved.
Disclosure of Invention
The invention aims to solve the problems and provides a needle head quick-release structure of an electronic injection pen and the electronic injection pen, so as to solve the problem that an injection needle of the existing full-automatic electronic insulin injection pen is inconvenient to replace.
The purpose of the invention is realized by the following technical scheme:
a needle head quick-release structure of an electronic injection pen comprises a needle head and a quick-release assembly, wherein the needle head can be detachably mounted at the front end of a medicine storage bin, the medicine storage bin is of a side-flip structure, the medicine storage bin is mounted on one side of a sliding base, the sliding base can be arranged in a shell in a reciprocating sliding manner, a driving device used for driving the sliding base to move in a reciprocating manner is arranged in the shell, the quick-release assembly comprises a contact switch, a switch shifting block and a protective cover used for covering the needle head, the contact switch is fixed in the shell, the switch shifting block is fixed on the protective cover, and the protective cover has 2 states of an opening state and a closing state; when the protective cover is in an opening state, the switch shifting block on the protective cover is separated from the contact switch so as to enable the driving device to be started and drive the needle head to extend out towards the front end; when the protective cover is in a closed state, the switch shifting block pushes against the contact switch so as to enable the driving device to start and drive the needle head to reset.
As a preferred scheme of the invention, one end of the protecting cover is hinged on the outer shell through a pin shaft, and the other end of the protecting cover is connected with the front end of the outer shell in a clamping manner.
As a preferred scheme of the present invention, the outer housing includes a front cover plate located at a front end thereof, the front cover plate is provided with a first through hole through which the needle extends, an inner end of the front cover plate is movably connected with a movable hook, a second through hole is formed in the position of the movable hook corresponding to the first through hole, a protruding hook portion is disposed on one side of the movable hook, an opening through which the hook portion extends is formed in the front cover plate, a clamping groove matched with the hook portion is disposed on the protecting cover, a spring groove is formed in the other side of the movable hook, a spring is disposed in the spring groove so that the hook portion extends from the opening of the front cover plate, and a pressing assembly is mounted on the outer housing to drive the movable hook to retract so that the hook portion is disengaged from the clamping groove.
As a preferable scheme of the present invention, the pressing assembly includes a button mounted on the outer housing and a toggle block located inside the outer housing, the toggle block is rotatably connected to the front cover plate through a rotating shaft, the toggle block includes a transmission part and a pushing part, the transmission part is fixedly connected to an inner side end of the button, a protruding abutting part is provided on the movable hook, the pushing part abuts against the abutting part, and a first torsion spring is mounted on the rotating shaft.
As a preferable scheme of the present invention, the pin shaft is provided with a second torsion spring so that the protective cover is automatically opened when the movable hook is disengaged from the slot.
As a preferred scheme of the present invention, a skin sensor is disposed on an outer surface of the protecting cover, an elastic conductive column electrically connected to the skin sensor is mounted on the protecting cover, a conductive body is fixedly connected to the front cover plate, the conductive body is electrically connected to the controller, and a conductive groove matched with the elastic conductive column is formed in the conductive body; when the protecting cover is in an opening state, the elastic conductive column is separated from the conductive groove, and when the protecting cover is in a closing state, the elastic conductive column is inserted into the conductive groove.
As a preferable scheme of the present invention, the driving device includes a sliding motor, a sliding speed reducer, a sliding lead screw and a transmission block, the transmission block is connected to the sliding lead screw in a threaded manner, the transmission block is fixedly connected to the sliding base, an output shaft of the sliding motor is in transmission connection with an input shaft of the sliding speed reducer, and an output shaft of the sliding speed reducer is in transmission connection with the sliding lead screw.
As a preferable scheme of the present invention, a fixed plate is installed inside the outer housing, a sliding groove is formed on the fixed plate, and a sliding block which is in sliding fit with the sliding groove is arranged on the sliding base.
As a preferable scheme of the present invention, a drug administration injection driving device is arranged on the sliding base, the drug administration injection driving device includes a push rod, a driving motor, a speed reducer and a screw rod, an output end of the driving motor is in transmission connection with an input end of the speed reducer, an output end of the speed reducer is in transmission connection with the screw rod, and the push rod is in threaded connection with the screw rod.
An electronic injection pen comprises the needle head quick-release structure of the electronic injection pen.
Compared with the prior art, the needle head replacement device has the advantages that the needle head replacement can be rapidly realized, and the operation is convenient and simple.
Drawings
FIG. 1 is a perspective view of a quick release structure of a needle of an electronic injection pen;
FIG. 2 is a schematic diagram illustrating an internal structure of a quick release structure of a needle of an electronic injection pen;
FIG. 3 is a schematic diagram of another internal structure of a quick release structure of a needle of an electronic injection pen;
fig. 4 is a schematic structural view of the movable hook;
fig. 5 is a schematic structural view of the pressing assembly.
In the figure:
1. an outer housing; 2. a protective cover; 3. an elastic conductive column; 4. an electrical conductor; 5. a conductive slot; 6. a contact switch; 7. a switch shifting block; 8. a front cover plate; 9. a movable hook; 10. pressing a key; 11. a shifting block; 12. a spring; 13. a card slot; 14. a slide base; 15. a hook portion; 16. a second through hole; 17. an abutting portion; 18. a spring slot; 19. a transmission section; 20. a pressing section; 21. a needle.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings. It is to be understood that the embodiments described herein are illustrative only and are not limiting upon the present invention.
Referring to fig. 1 to 5, fig. 1 is a perspective view illustrating a needle quick release structure of an electronic injection pen; FIG. 2 is a schematic diagram illustrating an internal structure of a quick release structure of a needle of an electronic injection pen; FIG. 3 is a schematic diagram of another internal structure of a quick release structure of a needle of an electronic injection pen; fig. 4 is a schematic structural view of the movable hook; fig. 5 is a schematic structural view of the pressing assembly.
In this embodiment, a needle quick release structure of an electronic injection pen comprises a needle 21 and a quick release assembly, wherein the needle 21 is detachably mounted at the front end of a medicine storage bin, the medicine storage bin is of a side-flip structure, the medicine storage bin is mounted at one side of a sliding base 14, the sliding base 14 can be arranged inside a housing 1 in a reciprocating sliding manner, a driving device for driving the sliding base 14 to move in a reciprocating manner is arranged inside the housing 1, the quick release assembly comprises a contact switch 6, a switch shifting block 7 and a protecting cover 2 for covering the needle 21, one end of the protecting cover 2 is hinged on the housing 1 through a pin shaft, the other end of the protecting cover 2 is connected with the front end of the housing 1 in a clamping manner, the contact switch 6 is fixed inside the housing 1, the switch shifting block 7 is fixed on the protecting cover 2, the protecting cover 2 has 2 states of an opening state and a closing state; when the protective cover 2 is in an opening state, the switch shifting block 7 on the protective cover 2 is separated from the contact switch 6 so that the driving device is started and drives the needle head 21 to extend out towards the front end; when the protective cover 2 is in a closed state, the switch shifting block 7 pushes against the contact switch 6 so as to start the driving device and drive the needle head 21 to reset.
Specifically, in this embodiment, the outer housing 1 includes a front cover plate 8 located at a front end thereof, the front cover plate 8 is provided with a first through hole for extending the needle 21, the inner side end of the front cover plate 8 is movably connected with a movable hook 9, a second through hole 16 is provided on the movable hook 9 corresponding to the first through hole, a convex hook portion 15 is provided on one side of the movable hook 9, the front cover plate 8 is provided with an opening for extending the hook portion 15, the protecting cover 2 is provided with a clamping groove 13 matched with the hook portion 15, a spring groove 18 is provided on the other side of the movable hook 9, a spring 12 is installed in the spring groove 18 to extend the hook portion 15 from the opening of the front cover plate 8, the outer housing 1 is provided with a pressing component to drive the movable hook 9 to retract so that the hook portion 15 is disengaged from the clamping groove 13, press the subassembly including install in button 10 on the shell body 1 and be located the inside piece 11 that dials of shell body 1, dial piece 11 through the pivot can pivoted connect in on the front shroud 8, dial piece 11 and include transmission portion 19 and the portion 20 that bulldozes, transmission portion 19 with the medial extremity fixed connection of button 10, be provided with convex portion 17 that supports to support on the activity pothook 9, the portion 20 top that bulldozes is leaned on support and is leaned on portion 17, install first torsional spring in the pivot.
In order to enable the protecting cover 2 to be automatically opened when the movable hook 9 is separated from the clamping groove 13, in this embodiment, the pin shaft is provided with a second torsion spring.
Specifically, in this embodiment, a skin sensor is disposed on an outer surface of the protecting cover 2, an elastic conductive post 3 electrically connected to the skin sensor is mounted on the protecting cover 2, an electric conductor 4 is fixedly connected to the front cover plate 8, the electric conductor 4 is electrically connected to the controller, and a conductive groove 5 matched with the elastic conductive post 3 is formed in the electric conductor 4; when the protecting cover 2 is in an opening state, the elastic conductive column 3 is separated from the conductive groove 5, and when the protecting cover 2 is in a closing state, the elastic conductive column 3 is inserted into the conductive groove 5; through adopting above-mentioned structural design, when protecting cover 2 was in the open mode, just even the skin sensor on the protecting cover 2 contacted skin also can not give the controller signal to guarantee that protecting cover 2 doses when the open mode and inject drive arrangement can not give the injection action of dosing.
Specifically, in this embodiment, the driving device includes a sliding motor, a sliding speed reducer, a sliding screw rod and a transmission block, the transmission block is connected to the sliding screw rod in a threaded manner, the transmission block is fixedly connected to the sliding base, an output shaft of the sliding motor is in transmission connection with an input shaft of the sliding speed reducer, and an output shaft of the sliding speed reducer is in transmission connection with the sliding screw rod; further, in order to improve the stability of the interaction, in this embodiment, a fixing plate is installed inside the outer casing 1, a sliding groove is formed in the fixing plate, and a sliding block in sliding fit with the sliding groove is arranged on the sliding base 14.
Specifically, in this embodiment, a drug administration injection driving device is arranged on the sliding base 14, the drug administration injection driving device includes a push rod, a driving motor, a speed reducer and a screw rod, an output end of the driving motor is in transmission connection with an input end of the speed reducer, an output end of the speed reducer is in transmission connection with the screw rod, and the push rod is in threaded connection with the screw rod.
When the needle 21 needs to be replaced, the key 10 is pressed, and then the shifting block 11 is driven to rotate, so that the movable hook 9 is disengaged from the clamping groove 13, the protective cover 2 is automatically opened under the action of the second torsion spring, at the moment, the switch shifting block 7 is separated from the contact switch 6, the contact switch 6 gives a signal to the controller, the controller controls the sliding motor to be started, and then the sliding base 14 is driven to move forwards, so that the needle 21 extends out, and the needle 21 is convenient to replace.
The embodiment also discloses an electronic injection pen, which comprises the needle head quick-release structure of the electronic injection pen.
The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the invention, which changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims.

Claims (10)

1. The utility model provides an electron injection pen's syringe needle rapid disassembly structure, includes syringe needle and quick detach subassembly, the syringe needle can be dismantled installs in the front end in storage medicine storehouse, storage medicine storehouse is side flip formula structure, just storage medicine storehouse is installed in one side of sliding seat, sliding seat can set up in the inside of shell body with reciprocating sliding, the inside of shell body is provided with and is used for driving sliding seat reciprocating motion's drive arrangement, its characterized in that: the quick-release assembly comprises a contact switch, a switch shifting block and a protecting cover for covering the needle head, the contact switch is fixed in the outer shell, the switch shifting block is fixed on the protecting cover, and the protecting cover has 2 states of an opening state and a closing state; when the protective cover is in an opening state, the switch shifting block on the protective cover is separated from the contact switch so as to enable the driving device to be started and drive the needle head to extend out towards the front end; when the protective cover is in a closed state, the switch shifting block pushes against the contact switch so as to enable the driving device to start and drive the needle head to reset.
2. The needle quick release structure of an electronic injection pen according to claim 1, wherein: one end of the protecting cover is hinged to the shell body through a pin shaft, and the other end of the protecting cover is connected with the front end of the shell body in a clamping mode.
3. The needle quick release structure of an electronic injection pen according to claim 2, characterized in that: the shell body is including being located the front shroud of its front end, it has the first through-hole that supplies the syringe needle to stretch out to open on the front shroud, the medial extremity of front shroud can remove be connected with movable pothook, correspond on the movable pothook the second through-hole has been seted up to the position of first through-hole, just activity pothook one side is provided with convex clamping hook portion, it has the confession to open on the front shroud the opening that clamping hook portion stretches out, be provided with on the protecting cover with clamping hook portion matched with draw-in groove, the spring groove has been seted up to movable pothook opposite side, spring inslot is installed the spring so that clamping hook portion follows the opening part of front shroud stretches out, install on the shell body and press the subassembly to drive movable pothook withdrawal so that clamping hook portion with the draw-in groove.
4. The needle quick release structure of an electronic injection pen according to claim 3, wherein: the pressing assembly comprises a key arranged on the outer shell and a poking block arranged inside the outer shell, the poking block can be rotatably connected to the front cover plate through a rotating shaft, the poking block comprises a transmission part and a pushing part, the transmission part is fixedly connected with the inner side end of the key, a protruding abutting part is arranged on the movable clamping hook, the pushing part abuts against the abutting part, and a first torsion spring is arranged in the rotating shaft.
5. The needle quick release structure of an electronic injection pen according to claim 4, wherein: and a second torsion spring is arranged on the pin shaft so that the protective cover can be automatically opened when the movable clamping hook is separated from the clamping groove.
6. The needle quick release structure of an electronic injection pen according to claim 5, wherein: the skin sensor is arranged on the outer surface of the protecting cover, the protecting cover is provided with an elastic conductive column which is electrically connected with the skin sensor, the front cover plate is fixedly connected with a conductor which is electrically connected with the controller, and the conductor is provided with a conductive groove which is matched with the elastic conductive column; when the protecting cover is in an opening state, the elastic conductive column is separated from the conductive groove, and when the protecting cover is in a closing state, the elastic conductive column is inserted into the conductive groove.
7. The needle quick release structure of an electronic injection pen according to any one of claims 1 to 6, wherein: the driving device comprises a sliding motor, a sliding speed reducer, a sliding screw rod and a transmission block, wherein the transmission block is in threaded connection with the sliding screw rod and is fixedly connected with the sliding base, an output shaft of the sliding motor is in transmission connection with an input shaft of the sliding speed reducer, and an output shaft of the sliding speed reducer is in transmission connection with the sliding screw rod.
8. The needle quick release structure of an electronic injection pen according to claim 7, wherein: the inner mounting of shell body has the fixed plate, it has the spout to open on the fixed plate, be provided with on the sliding base with spout sliding fit's slider.
9. The needle quick release structure of an electronic injection pen according to claim 8, wherein: the drug delivery injection device is characterized in that a drug delivery injection driving device is arranged on the sliding base and comprises a push rod, a driving motor, a speed reducer and a screw rod, the output end of the driving motor is in transmission connection with the input end of the speed reducer, the output end of the speed reducer is in transmission connection with the screw rod, and the push rod is in threaded connection with the screw rod.
10. An electronic injection pen, characterized in that: a needle quick release structure comprising an electronic injection pen according to any one of claims 1 to 9.
CN202010429157.1A 2020-05-20 2020-05-20 Needle head quick-release structure of electronic injection pen and electronic injection pen Pending CN111467612A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010429157.1A CN111467612A (en) 2020-05-20 2020-05-20 Needle head quick-release structure of electronic injection pen and electronic injection pen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010429157.1A CN111467612A (en) 2020-05-20 2020-05-20 Needle head quick-release structure of electronic injection pen and electronic injection pen

Publications (1)

Publication Number Publication Date
CN111467612A true CN111467612A (en) 2020-07-31

Family

ID=71764937

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010429157.1A Pending CN111467612A (en) 2020-05-20 2020-05-20 Needle head quick-release structure of electronic injection pen and electronic injection pen

Country Status (1)

Country Link
CN (1) CN111467612A (en)

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