CN113117191A - Automatic injection pen - Google Patents
Automatic injection pen Download PDFInfo
- Publication number
- CN113117191A CN113117191A CN202110523538.0A CN202110523538A CN113117191A CN 113117191 A CN113117191 A CN 113117191A CN 202110523538 A CN202110523538 A CN 202110523538A CN 113117191 A CN113117191 A CN 113117191A
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- China
- Prior art keywords
- injection
- pen
- pen body
- push rod
- unlocking
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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
- A61M5/2033—Spring-loaded one-shot injectors with or without automatic needle insertion
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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
- A61M2005/2006—Having specific accessories
- A61M2005/202—Having specific accessories cocking means, e.g. to bias the main drive spring of an injector
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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 embodiment of the application discloses an automatic injection pen, which can realize the quick automatic injection of injection medicaments in the automatic injection pen. The method in the embodiment of the application comprises the following steps: when the automatic injection pen is provided with the injection bottle to be injected with the medicament in a matched manner and the disposable needle head is arranged, the injection end of the automatic injection pen is pressed towards the part to be injected, the unlocking sleeve piece can slide towards the second end of the pen body, meanwhile, the skin of the injection part can be pricked by the disposable needle head, the limiting structure of the unlocking sleeve piece is separated from the limit of the detachable limiting state position of the detachable structure, the detachable structure is released under the action of the pretightening force of the injection spring, so that the injection spring extends the push rod into the medicament bin to abut against the movable rubber plug in the injection bottle, the injection spring can force the push rod to push the movable rubber plug, the medicament to be injected in the injection bottle is ejected from the injection outlet of the first end of the injection bottle, and the medicament to be injected in the injection bottle can be rapidly input into the part to be injected through the disposable needle head.
Description
Technical Field
The embodiment of the application relates to the field of medical instruments, in particular to an automatic injection pen.
Background
In order to meet the requirement of autonomous injection of a patient in a family, the automatic injection pen on the market at present generally has the characteristics of simplicity in operation and convenience in taking and using, so that the patient needing to inject a specific medicament through the automatic injection pen can inject the medicament by himself without the need of field guidance of a professional doctor, and the emergency requirement of the patient is well met, and the privacy of the patient is protected.
However, the automatic injection pen in the prior art needs to be unlocked and pressed to inject the medicament to be injected in the automatic injection pen, that is, the automatic injection pen in the prior art needs to be unlocked before automatic injection, then the injection button can be activated, and the injection of the medicament to be injected in the automatic injection pen can be realized after the activated injection button is pressed.
Disclosure of Invention
The embodiment of the application provides an automatic injection pen, which can realize quick automatic injection of a medicament to be injected in the automatic injection pen.
The automatic injection pen comprises a pen body, a push rod, an unlocking kit, a return spring and an injection spring;
the pen body is tubular, a medicine bin is arranged inside the first end of the pen body, a lock catch is arranged at the second end of the pen body, and the lock catch is provided with a first buckle structure;
the push rod is slidably sleeved between the medicine bin and the lock catch in the pen body, the push rod can extend into the medicine bin when sliding to the first end of the pen body, the second end of the push rod is provided with a second buckle structure, and the second buckle structure and the first buckle structure can be connected in an adaptive manner to form a detachable structure;
the unlocking sleeve piece is slidably sleeved between the pen body and the push rod, and a second end of the unlocking sleeve piece is provided with a limiting structure for detachably limiting the detachable structure;
the first end of the reset spring is abutted against the first end of the unlocking sleeve piece with pretightening force, the second end of the reset spring is abutted against the first end of the medicine bin, so that the first protrusion of the unlocking sleeve piece is abutted against the first end surface of the medicine bin to limit the unlocking sleeve piece to be separated from the pen body, the first end of the unlocking sleeve piece extends out of the first end of the pen body, and the limiting structure keeps the limitation on the detachable limiting state of the detachable structure;
the first end of the injection spring is abutted against the second end of the push rod with pretightening force, and the second end of the injection spring is abutted against the second end of the pen body;
when the first end of the unlocking kit slides to the second end of the pen body, the limiting structure loses the limitation on the detachable limiting state of the detachable structure, and the detachable structure is released under the action of the pretightening force of the injection spring, so that the injection spring pushes the push rod to the first end of the pen body from the second end of the pen body, and the push rod extends into the medicine bin when being located at the first end of the pen body.
Optionally, a first locking structure of the push rod is further arranged at the first end of the pen body;
and a second push rod locking structure is arranged on the push rod corresponding to the first push rod locking structure, so that when the injection spring pushes the push rod to the first end of the pen body from the second end of the pen body, the first push rod locking structure is in fit connection with the second push rod locking structure, and the push rod is locked at the first end of the pen body.
Optionally, the pen body is provided with a transparent observation window.
Optionally, the push rod has a preset color, and the push rod in a non-detachable restricted state can be observed through the transparent observation window.
Optionally, the method further includes: a pen cap;
the pen cap is detachably connected with the first end of the pen body, and the pen cap can cover the first end of the unlocking kit, extending out of the first end of the pen body.
Optionally, the unlocking kit includes: needle sheath, unlocking piece;
the needle sleeve is detachably connected with the unlocking piece;
the needle sleeve is tubular and used as a first end of the unlocking kit to extend out of the first end of the pen body;
the unlocking piece is tubular, and the second end serving as the unlocking kit is provided with a limiting structure for limiting the detachable structure in a detachable mode.
Optionally, the method further includes: a pen body rear cover;
the medicine bin is detachably connected with the pen body;
the lock catch is detachably connected with the pen body;
the lock catch is detachably connected with the pen body rear cover, and the pen body rear cover is detachably connected with the pen body.
Optionally, the method further includes: an injection bottle;
the needle head of the injection bottle penetrates through the medicine bin and extends out of the first end of the pen body, the needle head of the injection bottle does not extend out of the first end of the unlocking kit of the first end of the pen body, and the movable rubber plug of the injection bottle and the first end of the push rod are located on the same axis;
when the push rod is located at the first end of the pen body, the first end of the push rod pushes the movable rubber plug of the injection bottle to be located at the first end of the injection bottle.
Optionally, the needle of the injection bottle is detachably sleeved with a needle guard.
Optionally, the method further includes: a medicine bottle sleeve;
the medicine bottle sleeve is annular and coaxially sleeved between the medicine bin and the injection bottle.
According to the technical scheme, the embodiment of the application has the following advantages:
it can be seen that, when the automatic injection pen of the embodiment of the present application has an injection bottle with a certain dosage of medicament to be injected and a disposable needle is installed at an injection outlet of a first end of the injection bottle, a user only needs to hold the pen body and then press the first end (injection end) of the automatic injection pen towards a part to be injected of a human body, so that the first end of the unlocking kit slides towards a second end of the pen body, and the disposable needle penetrates into the skin of the injection part, when the first end of the unlocking kit slides towards the second end of the pen body, the limit structure of the second end of the unlocking kit slides towards the second end of the pen body, so that the limit structure is free from the limit of the detachable limit state position of the detachable structure, and the detachable structure is released under the pre-tightening force of the injection spring, i.e. the second buckle structure is separated from the first buckle structure, so that the injection spring pushes the push rod to the first end of body of the pen from the second end of body of the pen, and the push rod can stretch into the medicine storehouse when being located the first end of body of the pen, stretch into the removal plug in the medicine storehouse in the automatic injection pen can butt injection bottle, the injection spring in the automatic injection pen will force the push rod to push and move the plug, so that the injection of treating injection medicament in the injection bottle is ejected from the injection outlet of the first end of injection bottle, then can be through this disposable syringe needle for the injection medicament of treating in the injection bottle of human input injection bottle. Therefore, the injection process of the automatic injection pen is simple and convenient, and the quick automatic injection of the medicament to be injected in the automatic injection pen is realized.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of an automatic injection pen according to the present application;
FIG. 2 is an exploded view of one embodiment of the automatic injection pen of the present application;
FIG. 3 is a schematic structural view of one embodiment of a cartridge for an automatic injection pen of the present application;
FIG. 4 is a schematic structural view of an embodiment of the automatic injection pen with a drug chamber installed in cooperation with an unlocking kit according to the present application;
FIG. 5 is a schematic structural diagram illustrating an embodiment of a plunger of an automatic injection pen according to the present application;
FIG. 6 is a schematic structural view of one embodiment of the present invention showing the cooperative mounting of the traditional Chinese medicine cartridge, the unlocking kit, the push rod, the injection spring and the lock catch;
FIG. 7 is a cross-sectional view of one embodiment of an automatic injection pen of the present application prior to injection;
FIG. 8 is a cross-sectional view of one embodiment of an automatic injection pen of the present application during injection;
FIG. 9 is a cross-sectional view of one embodiment of the automatic injection pen of the present application after injection.
Detailed Description
The embodiment of the application provides an automatic injection pen, can realize the quick automatic injection of the interior injection medicament of automatic injection pen.
Referring to fig. 1 and 2, the automatic injection pen according to the embodiment of the present application includes a pen body 100, a push rod 200, an unlocking kit 300, a return spring 400, and an injection spring 500. The pen body 100 is tubular, a medicine bin 110 is arranged inside the first end of the pen body 100, a lock catch 120 is arranged at the second end of the pen body 100, and the lock catch 120 is provided with a first buckle structure 121; the push rod 200 is slidably sleeved between the medicine bin 110 and the lock catch 120 in the pen body 100, the push rod 200 can extend into the medicine bin 110 when sliding to the first end of the pen body 100, the second end of the push rod 200 is provided with a second buckle structure 201, and the second buckle structure 201 and the first buckle structure 121 can be connected in an adaptive manner to form a detachable structure; the unlocking kit 300 is slidably sleeved between the pen body 100 and the push rod 200, and a second end of the unlocking kit 300 is provided with a limiting structure 321 for detachably limiting the detachable structure; the first end of the return spring 400 abuts against the first end of the unlocking kit 300 with pretightening force, the second end of the return spring 400 abuts against the first end of the medicine bin 110, so that the first protrusion 311 of the unlocking kit 300 abuts against the first end surface 111 of the medicine bin 110 to limit the unlocking kit 300 to be separated from the pen body 100, the first end of the unlocking kit 300 extends out of the first end of the pen body 100, and the limiting structure 321 keeps limiting the detachable limiting state of the detachable structure; the first end of the injection spring 500 is pre-tensioned to abut against the second end of the push rod 200, and the second end of the injection spring 500 abuts against the second end of the pen body 100. It can be understood that, when the automatic injection pen traditional Chinese medicine bin 110 of the embodiment of the present application is adapted to be installed with the injection bottle 600 of a certain dosage of medicine to be injected, and the injection outlet of the first end of the injection bottle 600 is adapted to be installed with the disposable needle, the user only needs to hold the pen body 100 by hand, and then press the first end (injection end) of the automatic injection pen towards the part to be injected, so that the first end of the unlocking kit 300 slides towards the second end of the pen body 100, and at the same time, the disposable needle can be pricked into the part to be injected, when the first end of the unlocking kit 300 slides towards the second end of the pen body 100, the limit structure 321 of the second end of the unlocking kit 300 slides towards the second end of the pen body 100, so that the limit structure 321 breaks away from the limit of the detachable limit state position of the detachable structure, and the detachable structure is released under the pre-tightening force of the injection spring 500, that is, the second buckle structure 201 is separated from the first buckle structure 121, so that the injection spring 500 pushes the push rod 200 from the second end of the pen body 100 to the first end of the pen body 100, and the push rod 200 can extend into the medicine bin 110 when being located at the first end of the pen body 100, the push rod 200 extending into the medicine bin 110 in the automatic injection pen can abut against the movable rubber plug 601 in the injection bottle 600, the injection spring 500 in the automatic injection pen can force the push rod 200 to push the movable rubber plug 601, so that the medicine to be injected in the injection bottle 600 is ejected from the injection outlet at the first end of the injection bottle 600, and then the medicine to be injected in the injection bottle 600 can be input to the injection site through the disposable needle. Therefore, the injection process of the automatic injection pen is simple and convenient, and the quick automatic injection of the medicament to be injected in the automatic injection pen is realized.
Further, a first end of the pen body 100 of the automatic injection pen of the present application may further be provided with a first locking structure of a push rod; and a second push rod locking structure is provided on the push rod 200 corresponding to the first push rod locking structure, so that when the injection spring 500 pushes the push rod 200 from the second end of the pen body 100 to the first end of the pen body 100, the first push rod locking structure is in fit connection with the second push rod locking structure, so that the push rod 200 is locked at the first end of the pen body 100.
Further, referring to fig. 2 and 3, the pen body 100 and the drug cartridge 110 of the automatic injection pen of the present application are independent components. The medicine bin 110 is provided with a first push rod locking structure 116, and the medicine bin 110 and the pen body 100 can be detachably connected or fixedly connected through a connecting structure such as a buckle. For example, the medicine bin 110 may be provided with a buckle 112 and an annular protrusion 113, the first end of the pen body 100 is provided with a buckle groove 101 corresponding to the buckle 112, the rotation freedom between the pen body 100 and the medicine bin 110 is limited by the fit connection of the buckle 112 and the buckle groove 101, and the axial sliding free end between the pen body 100 and the medicine bin 110 is limited by the abutting of the annular protrusion 113 and the first end surface of the pen body 100, so as to connect the pen body 100 and the medicine bin 110.
Preferably, this application automatic injection pen traditional chinese medicine storehouse 110 is double-deck coaxial line structure, and medicine storehouse 110 includes the outer and medicine storehouse inlayer of medicine storehouse, and wherein medicine storehouse inlayer gapped ground coaxial cover is established in the outer layer of medicine storehouse, and medicine storehouse skin and medicine storehouse inlayer realize fixed connection through medicine storehouse connecting portion 114. The outer mainly used body 100 of a writing brush of medicine storehouse is connected, so the medicine storehouse skin has buckle 112 and annular protrusion 113, the medicine storehouse skin also is used for can dismantling with cap 700 and is connected, have small outer annular protruding muscle 115 of medicine storehouse on the outer first end surface wall of medicine storehouse, and cap 700 has the volume that can hold the first end closing cap of the unblock external member 300 of the first end of body 100 of stretching out, and have on the inner wall of cap 700's one end with the miniature annular groove of the outer annular protruding muscle 115 adaptation of this medicine storehouse, can be through the cooperation of miniature annular groove and the outer annular protruding muscle 115 of medicine storehouse, make cap 700 and medicine storehouse 110 realize dismantling and be connected. The inner layer of the medicine bin is mainly used for being matched and installed with the injection bottle 600, and the first push rod locking structure 116 is positioned in the inner layer of the medicine bin.
Further, in the automatic injection pen of the present application, the pen body 100 is further provided with a transparent observation window 101, preferably, the transparent observation window 101 can observe the whole injection bottle 600, so that a user can know the dose of the medicament to be injected in the injection bottle 600 through the transparent observation window 101.
Further, the plunger 200 in the automatic injection pen of the present application may be designed to have a predetermined color, which may be clearly distinguished from colors of other components in the automatic injection pen, and such that the plunger 200 in the non-detachable restriction state may be observed through the transparent viewing window 101, so that a user may more clearly perceive the plunger 200 in pushing the moving plug 601 in the injection bottle 600 through the transparent viewing window 101.
Further, referring to fig. 4 in combination, the unlocking kit 300 for the automatic injection pen of the present application includes: needle guard 310, unlocking element 320. The needle sleeve 310 is detachably connected with the unlocking piece 320, the needle sleeve 310 is tubular, the first end of the needle sleeve 310 serving as the unlocking kit 300 extends out of the first end of the pen body 100, and the part of the needle sleeve 310 extending out of the pen body 100 is used as the injection end of the automatic injection pen and as a peripheral protective sleeve for a disposable needle; the unlocking member 320 is tubular, and a second end of the unlocking kit 300 is provided with a limiting structure 321 for detachably limiting the detachable structure, and the limiting structure 321 is specifically a circular ring for limiting the separation of the first buckle structure 121 and the second buckle structure 201. That is, the detachable structure formed by the first latch structure 121 and the second latch structure 201 can be easily separated under the action of the pushing force of the push rod 200 due to the pre-tightening force of the injection spring 500, but due to the limitation of the limiting structure 321 on the spatial position, the detachable structure formed by the first latch structure 121 and the second latch structure 201 can not be separated for a while. In this embodiment, the first end of the needle sheath 310 is tubular, the second end of the needle sheath 310 is in the form of two symmetrical circular arc sheets, and each circular arc sheet is provided with a first protrusion 311 and a guide groove 312; two circular arc sheets of the needle sleeve 310 penetrate through a gap between the outer layer of the medicine bin and the inner layer of the medicine bin and are sleeved between the outer layer of the medicine bin and the inner layer of the medicine bin, because the outer layer of the medicine bin is used for being connected with the pen body 100, which is equivalent to the fact that the needle sleeve 310 is sleeved between the pen body 100 and the medicine bin 110, when the needle sleeve 310 is sleeved in the gap between the outer layer of the medicine bin and the inner layer of the medicine bin, the first protrusion 311 of the needle sleeve 310 is in fit connection with the first end surface 111 of the outer layer of the medicine bin 110, so that the needle sleeve 310 cannot be separated from the first end of the medicine bin 110, the medicine bin connecting portion 114 of the medicine bin 110 limits the sliding distance of the first end of the needle sleeve 310 to the second end of the medicine bin 110, but the medicine bin connecting portion 114 at least allows the first end of the needle sleeve 310 to be completely uncovered. The return spring 400 is just clamped between the first end of the needle sheath 310 and the first end surface of the inner layer of the drug storage, so that the first protrusion 311 of the needle sheath 310 abuts against the first end surface 111 of the drug storage 110 to limit the needle sheath 310 from being separated from the pen body 100, and meanwhile, the first end of the needle sheath 310 provides protection for the injection outlet of the first end of the injection bottle 600.
As can be understood from fig. 5, the plunger 200 of the automatic injection pen according to the embodiment of the present application includes: a second buckle structure 201, a push rod second locking structure 202, a push rod body 203, an annular fixed bracket 204, a sliding protrusion 206 and a window baffle 207. Wherein the first end of the push rod body 203 enters the medicine bin 110 as the push rod 200 and abuts against the movable rubber plug 601 of the injection bottle 600, the second buckle structure 201 is fixed at the second end of the push rod body 203, the annular fixing support 204 is coaxially and gappedly connected with the push rod body 203 through the connecting plate structure 208, the push rod second locking structure 202, the sliding protrusion 206 and the window baffle 207 are all arranged on the annular fixing support 204, wherein the sliding protrusion 206 is matched with the groove on the inner wall of the pen body 100 to realize directional stable sliding, the push rod second locking structure 202 is in adaptive connection with the push rod first locking structure 116 positioned at the inner layer of the medicine bin, so that the push rod 200 is locked at the first end of the pen body 100, the window baffle 207 is positioned at one side of the transparent observation window 101 on the pen body 100, when the automatic injection pen is not used, the window baffle 207 does not shield the transparent observation window 101, along with the use process of the automatic injection pen, the window shutter 207 eventually blocks the entirety of the transparent observation window 101 in the pen body 100 as the plunger 200 slides. It can be understood that, when the unlocking element 320 is not connected to the needle sheath 310, the push rod 200 of the embodiment of the application may have two symmetrical circular arc pieces at the first end of the unlocking element 320 to penetrate through the push rod through hole 205 of the push rod, so that the push rod body 203 of the push rod 200 is sleeved in the unlocking element 320, the annular fixing bracket 204 of the push rod body 200 is sleeved outside the second end of the unlocking element 320, and the second fastening structure 201 at the second end of the push rod body 203 may extend into the limiting structure 321. When the unlocking member 320 is matingly connected to the needle hub 310, the plunger 200 may slide between the unlocking member 320 and the needle hub 310.
Referring to fig. 6, the injection spring 500 in the automatic injection pen according to the embodiment of the present application is preferably a coil spring, wherein an inner diameter of the injection spring 500 is larger than an outer diameter of the unlocking sleeve 300, and an outer diameter of the injection spring 500 is smaller than the inner diameter of the pen body 100, specifically, a first end of the injection spring 500 is in pretightening contact with a second end surface of the annular fixing bracket 204 of the push rod 200, a second end of the injection spring 500 is in contact with a protrusion on an inner wall of a second end of the pen body 100, and the injection spring 500 forces the push rod 200 to have a tendency to move toward the first end of the pen body 100. When the second engaging structure 201 of the second end of the plunger body 203 and the first engaging structure 121 of the latch 120 form a detachable structure in the limiting structure 321, the injection spring 500 only pre-stressed to force the plunger 200 to keep sliding from the second end of the pen body 100 toward the first end of the pen body 100 due to the limitation of the limiting structure 321 in the unlocking kit 300.
Further, the automatic injection pen according to the embodiment of the present application may further include a pen body rear cover 800. The medicine bin 110 is detachably connected with the pen body 100; the lock catch 120 is detachably connected with the pen body 100; the lock catch 120 is detachably connected with the pen body rear cover 800, and the pen body rear cover 800 is detachably connected with the pen body 100, so that efficient matching between the parts of the automatic injection pen is facilitated.
Further, another product form of the automatic injection pen of the embodiment of the present application may be: including an injection bottle 600. The needle of the injection bottle penetrates through the medicine bin 110 and extends out of the first end of the pen body 100, the needle of the injection bottle 600 does not extend out of the first end of the unlocking kit 300 at the first end of the pen body 100, and the movable rubber plug 601 of the injection bottle 600 and the first end of the push rod body 203 in the push rod 200 are located on the same axis; when the push rod 200 is located at the first end of the pen body 100, the first end of the push rod 200 pushes the movable rubber plug 601 of the injection bottle 600 to be located at the first end of the injection bottle 600. Preferably, the needle of the injection bottle 600 is detachably sleeved with a needle guard 610.
Further, a medicine bottle sleeve 900 is arranged in the inner layer of the medicine bin 110 of the automatic injection pen in the embodiment of the present application. This medicine bottle cover 900 is the ring form, and coaxial cover is established and is located between medicine storehouse 110 and injection bottle 600 for the structure of protection and reinforcement injection bottle prevents that injection bottle 600 from breaking when receiving the impact of push rod body 203 first end.
Referring to fig. 7, 8 and 9, the automatic injection pen according to the embodiment of the present invention is used according to the following principle:
before the automatic injection pen is used, please refer to fig. 7, an injection bottle 600 with a dose of medicine to be injected is correctly installed in a medicine bin 110 of the automatic injection pen, the injection bottle 600 is fixed on an inner layer of the medicine bin, an injection outlet at a first end of the injection bottle 600 penetrates through the first end of the inner layer of the medicine bin and extends out of the pen body 100, the injection outlet at the first end of the injection bottle 600 can be adapted to install a disposable needle or adopts a needle-free injection mode, a first end of the unlocking kit 300 extends out of the first end of the pen body 100 under the action of a return spring 400 to form a state of protecting the injection outlet at the first end of the injection bottle 600, a limiting structure 321 of a needle sleeve 320 in the unlocking kit 300 keeps limiting a detachable limiting state of the detachable structure, and the push rod 200 is limited because a second buckling structure 201 of the push rod and a first buckling structure 121 of the lock catch 120, the push rod 200 is enabled to keep the second end of the pen body 100 under the pretightening force of the injection spring 500, at this time, the push rod body 203 of the push rod 200 has no acting force on the movable rubber plug 601 in the injection bottle 600, the pen cap 700 of the automatic injection pen is in fit connection with the outer layer of the medicine bin, the pen cap 700 accommodates and prevents the needle sleeve 310 of the unlocking kit 300 from being triggered, the needle which is positioned in the pen cap 700 and under the protection of the first end of the needle sleeve 310 can be further provided with the needle sleeve 610 for protection, and the probability of needle pollution is reduced. At this time, the transparent observation window 101 of the pen body 100 of the automatic injection pen cannot see the window baffle 207 of the push rod 200, but the injection bottle can be seen through the transparent observation window 101, and a dose of medicament to be injected filled in the injection bottle can be clearly seen.
In the process of using the automatic injection pen, please refer to fig. 8, the pen cap 700 and the needle guard 610 of the automatic injection pen according to the embodiment of the present application are detached, then the pen body 100 is held by a hand to align the injection end (the first end of the unlocking kit) of the automatic injection pen with the skin of the injection site, and the skin of the injection site is pressed with force, so that the first end of the unlocking kit 300 in the automatic injection pen slides towards the second end of the pen body 100 and extends into the pen body 100 under the obstruction of injecting the skin, the pen body 100 drives the medicine bin 120, the medicine bin 120 drives the injection bottle 600, the injection bottle 600 forces the disposable needle of the injection outlet at the first end to penetrate into the skin of the injection site without the protection of the first end of the unlocking kit 300, when the first end of the unlocking kit 300 slides towards the second end of the pen body 100, the limit structure 321 at the second end of the unlocking kit 300 slides towards the second end of the pen body 100 together, make limit structure 321 break away from the restriction to detachable structure's the restriction of detachable restriction state position, detachable structure relieves under injection spring 500's pretightning force effect, second buckle structure 201 separates with first buckle structure 121 promptly, so that injection spring 500 pushes push rod 200 to the first end of body of the pen body 100 from the second end of body of the pen body 100, but during the first end of push rod body 203 of push rod 200 stretching into injection bottle 600, butt removal plug 601, injection spring 500 in the automatic injection pen will force push rod 200 to push removal plug 601, so that the medicament of treating injection in injection bottle 600 jets out from the injection exit of injection bottle 600 first end, the realization is with treating injection bottle 600 automatic injection to treat injection department's skin. Along with the process that the push rod 200 pushes the movable rubber plug 601, at this time, the transparent observation window 101 on the pen body 100 of the automatic injection pen can see that the window baffle 207 of the push rod 200 gradually blocks the transparent observation window 101 towards the first end direction of the pen body 100.
Referring to fig. 9 after the automatic injection pen is used, when the push rod of the automatic injection pen according to the embodiment of the present invention slides to the predetermined position of the pen body 100, the second locking structure 202 on the push rod 200 will be in mating connection with the first locking structure 116 on the cartridge 110, thereby the push rod 200 is locked at the first end of the pen body 100, at this time, the moving rubber plug 601 in the injection bottle 600 just moves the limit position in the injection bottle 600, and injection of the medicament to be injected in the injection bottle 600 is completed, at this time, the pen body of the handheld automatic injection pen leaves the skin to be injected and carries out the needle inserted into the skin to be injected, the unlocking kit 300 is inspected from the pen body 100 again under the action of the return spring 400, and finally re-protects the needle, at which point the needle can be disposed of after the needle guard 610 is installed and the cap 700 is placed thereon.
The above description of the present application with reference to specific embodiments is not intended to limit the present application to these embodiments. For those skilled in the art to which the present application pertains, several changes and substitutions may be made without departing from the spirit of the present application, and these changes and substitutions should be considered to fall within the scope of the present application.
Claims (10)
1. An automatic injection pen, comprising: the pen body, the push rod, the unlocking kit, the reset spring and the injection spring;
the pen body is tubular, a medicine bin is arranged inside the first end of the pen body, a lock catch is arranged at the second end of the pen body, and the lock catch is provided with a first buckle structure;
the push rod is slidably sleeved between the medicine bin and the lock catch in the pen body, the push rod can extend into the medicine bin when sliding to the first end of the pen body, the second end of the push rod is provided with a second buckle structure, and the second buckle structure and the first buckle structure can be connected in an adaptive manner to form a detachable structure;
the unlocking sleeve piece is slidably sleeved between the pen body and the push rod, and a second end of the unlocking sleeve piece is provided with a limiting structure for detachably limiting the detachable structure;
the first end of the reset spring is abutted against the first end of the unlocking sleeve piece with pretightening force, the second end of the reset spring is abutted against the first end of the medicine bin, so that the first protrusion of the unlocking sleeve piece is abutted against the first end surface of the medicine bin to limit the unlocking sleeve piece to be separated from the pen body, the first end of the unlocking sleeve piece extends out of the first end of the pen body, and the limiting structure keeps the limitation on the detachable limiting state of the detachable structure;
the first end of the injection spring is abutted against the second end of the push rod with pretightening force, and the second end of the injection spring is abutted against the second end of the pen body;
when the first end of the unlocking kit slides to the second end of the pen body, the limiting structure loses the limitation on the detachable limiting state of the detachable structure, and the detachable structure is released under the action of the pretightening force of the injection spring, so that the injection spring pushes the push rod to the first end of the pen body from the second end of the pen body, and the push rod extends into the medicine bin when being located at the first end of the pen body.
2. The automatic injection pen of claim 1, wherein the first end of the pen body is further provided with a plunger first locking structure;
and a second push rod locking structure is arranged on the push rod corresponding to the first push rod locking structure, so that when the injection spring pushes the push rod to the first end of the pen body from the second end of the pen body, the first push rod locking structure is in fit connection with the second push rod locking structure, and the push rod is locked at the first end of the pen body.
3. The automatic injection pen of claim 2, wherein the pen body has a transparent viewing window thereon.
4. The automatic injection pen of claim 3, wherein the plunger has a predetermined color, and the plunger in a non-removable restrained state is viewable through the transparent viewing window.
5. The automatic injection pen of claim 1, further comprising: a pen cap;
the pen cap is detachably connected with the first end of the pen body, and the pen cap can cover the first end of the unlocking kit, extending out of the first end of the pen body.
6. The automatic injection pen of claim 1, wherein the unlocking kit comprises: needle sheath, unlocking piece;
the needle sleeve is detachably connected with the unlocking piece;
the needle sleeve is tubular and used as a first end of the unlocking kit to extend out of the first end of the pen body;
the unlocking piece is tubular, and the second end serving as the unlocking kit is provided with a limiting structure for limiting the detachable structure in a detachable mode.
7. The automatic injection pen of claim 1, further comprising: a pen body rear cover;
the medicine bin is detachably connected with the pen body;
the lock catch is detachably connected with the pen body;
the lock catch is detachably connected with the pen body rear cover, and the pen body rear cover is detachably connected with the pen body.
8. The automatic injection pen of claim 1, further comprising: an injection bottle;
the needle head of the injection bottle penetrates through the medicine bin and extends out of the first end of the pen body, the needle head of the injection bottle does not extend out of the first end of the unlocking kit of the first end of the pen body, and the movable rubber plug of the injection bottle and the first end of the push rod are located on the same axis;
when the push rod is located at the first end of the pen body, the first end of the push rod pushes the movable rubber plug of the injection bottle to be located at the first end of the injection bottle.
9. The automatic injection pen of claim 8, wherein the needle of the injection vial is removably sheathed with a needle guard.
10. The automatic injection pen of claim 8, further comprising: a medicine bottle sleeve;
the medicine bottle sleeve is annular and coaxially sleeved between the medicine bin and the injection bottle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110523538.0A CN113117191A (en) | 2021-05-13 | 2021-05-13 | Automatic injection pen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110523538.0A CN113117191A (en) | 2021-05-13 | 2021-05-13 | Automatic injection pen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113117191A true CN113117191A (en) | 2021-07-16 |
Family
ID=76781743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110523538.0A Pending CN113117191A (en) | 2021-05-13 | 2021-05-13 | Automatic injection pen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113117191A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115531663A (en) * | 2022-10-12 | 2022-12-30 | 巨翊科技（上海）有限公司 | Interlocked ejection type medicine bottle bin |
| CN116764035A (en) * | 2023-08-16 | 2023-09-19 | 苏州嘉树医疗科技有限公司 | Epinephrine automatic injection device of single dose area secondary emission |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2216187A1 (en) * | 1997-09-17 | 1999-03-17 | Cesar B. Oliveira | Safety syringe |
| CN1878587A (en) * | 2003-11-05 | 2006-12-13 | 特克法马许可公司 | Device for the administration of an injectable product |
| CN2863145Y (en) * | 2006-01-23 | 2007-01-31 | 中北大学 | Disposable syringe |
| CN1913933A (en) * | 2003-12-16 | 2007-02-14 | 贝克顿·迪金森公司 | Safety shield system for prefilled syringe |
| CN203815994U (en) * | 2014-04-29 | 2014-09-10 | 周学锋 | Auto-disable syringe |
| CN106139322A (en) * | 2015-04-01 | 2016-11-23 | 群康生技股份有限公司 | The locked configuration of injection pen |
| CN108434556A (en) * | 2018-05-23 | 2018-08-24 | 苏州鹏烨医疗科技有限公司 | Injection pen |
| WO2021078608A1 (en) * | 2019-10-23 | 2021-04-29 | Becton Dickinson France | Injection device comprising a needle shield |
-
2021
- 2021-05-13 CN CN202110523538.0A patent/CN113117191A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2216187A1 (en) * | 1997-09-17 | 1999-03-17 | Cesar B. Oliveira | Safety syringe |
| CN1878587A (en) * | 2003-11-05 | 2006-12-13 | 特克法马许可公司 | Device for the administration of an injectable product |
| CN1913933A (en) * | 2003-12-16 | 2007-02-14 | 贝克顿·迪金森公司 | Safety shield system for prefilled syringe |
| CN2863145Y (en) * | 2006-01-23 | 2007-01-31 | 中北大学 | Disposable syringe |
| CN203815994U (en) * | 2014-04-29 | 2014-09-10 | 周学锋 | Auto-disable syringe |
| CN106139322A (en) * | 2015-04-01 | 2016-11-23 | 群康生技股份有限公司 | The locked configuration of injection pen |
| CN108434556A (en) * | 2018-05-23 | 2018-08-24 | 苏州鹏烨医疗科技有限公司 | Injection pen |
| WO2021078608A1 (en) * | 2019-10-23 | 2021-04-29 | Becton Dickinson France | Injection device comprising a needle shield |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115531663A (en) * | 2022-10-12 | 2022-12-30 | 巨翊科技（上海）有限公司 | Interlocked ejection type medicine bottle bin |
| CN115531663B (en) * | 2022-10-12 | 2023-04-07 | 巨翊科技（上海）有限公司 | Interlocking pop-up medicine bottle bin |
| CN116764035A (en) * | 2023-08-16 | 2023-09-19 | 苏州嘉树医疗科技有限公司 | Epinephrine automatic injection device of single dose area secondary emission |
| CN116764035B (en) * | 2023-08-16 | 2023-11-21 | 苏州嘉树医疗科技有限公司 | Epinephrine automatic injection device of single dose area secondary emission |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210716 |
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