CN112007243A - Double-cavity automatic mixing injection device - Google Patents

Double-cavity automatic mixing injection device Download PDF

Info

Publication number
CN112007243A
CN112007243A CN202010858360.0A CN202010858360A CN112007243A CN 112007243 A CN112007243 A CN 112007243A CN 202010858360 A CN202010858360 A CN 202010858360A CN 112007243 A CN112007243 A CN 112007243A
Authority
CN
China
Prior art keywords
cavity
piston
housing
hole
push rod
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
CN202010858360.0A
Other languages
Chinese (zh)
Inventor
范晓逶
黄传伟
刘学
李斯伟
冯雁峰
郭剑
李如华
高艳艳
孙中杰
程亮
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.)
Institute of Pharmacology and Toxicology of AMMS
Academy of Military Medical Sciences AMMS of PLA
Original Assignee
Institute of Pharmacology and Toxicology of AMMS
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 Institute of Pharmacology and Toxicology of AMMS filed Critical Institute of Pharmacology and Toxicology of AMMS
Priority to CN202010858360.0A priority Critical patent/CN112007243A/en
Publication of CN112007243A publication Critical patent/CN112007243A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • A61M5/19—Syringes having more than one chamber, e.g. including a manifold coupling two parallelly aligned syringes through separate channels to a common discharge assembly
    • 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
    • A61M5/2066—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically comprising means for injection of two or more media, e.g. by mixing
    • 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
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
    • 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
    • A61M5/3286—Needle tip design, e.g. for improved penetration

Landscapes

  • 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 double-cavity automatic mixing injection device, which comprises a shell, an injection part and a firing part, wherein the injection part and the firing part are arranged in the shell; a first cavity and a second cavity are arranged in the injection part, the first cavity and the second cavity are coaxially arranged, the diameter of the second cavity is larger than that of the first cavity, a first piston is arranged at the position, close to the second cavity, of the first cavity, a sealing plug is arranged at one side, far away from the first cavity, of the second cavity, and a needle head device is arranged at one side, far away from the second cavity, of the sealing plug; a push rod, a spring and a safety device are arranged in the percussion part; the first cavity is filled with liquid medicament, the second cavity is filled with liquid medicament or powder medicament, and the first piston separates the medicaments in the first cavity from the medicaments in the second cavity; when the safety device is opened, the push rod is pushed by the spring to move forwards integrally, and the liquid medicament in the first cavity is mixed with the second cavity and injected through the needle device. The invention realizes double-cavity mixing safe injection.

Description

Double-cavity automatic mixing injection device
Technical Field
The invention relates to the technical field of medical instruments, in particular to a double-cavity automatic mixing injection device.
Background
The injection administration process involves risks and challenges from various aspects including mental or physical aspects of the user and the subject, and the use of an automatic injection needle simplifies the self-administration process, reduces patient anxiety, and improves safety, while the automatic needle designs the injection process as a standard motion to ensure that each injection is inserted to the proper depth and an accurate dose is administered. The administration mode is more controllable than manual injection administration, the process is continuous and smooth, and the compliance of the automatic needle is higher than that of manual injection.
Existing automatic injection devices, are only single vial designs, such as patent numbers: 201480048472.2, 201480048985.3, an autoinjector comprising: a housing adapted to hold a medicament container having a needle; a needle shield telescopically coupled to the housing and movable between a First Extended Position (FEP) relative to the housing, in which the needle is covered, and a Retracted Position (RP) relative to the housing, in which the needle is exposed; and a plunger rotatably and slidably disposed in the housing 41. The plunger is rotatable relative to the housing between a first rotational position in which the plunger is engaged to the housing and a second rotational position in which the plunger is disengaged from the housing. A needle shield is operably coupled to the plunger. The plunger rotates from the first rotational position to the second rotational position when the needle shield translates from the First Extended Position (FEP) to the Retracted Position (RP).
However, the above patent technologies cannot mix the medicines, and some medicines cannot be stored for a long time after being mixed, and need to be stored separately and mixed for use temporarily.
Accordingly, there is a need in the art for a dual chamber automatic mixing injection device.
Disclosure of Invention
In view of the above, the present invention provides a dual chamber automatic mixing injection device which is simple to operate and convenient to use.
In order to achieve the purpose, the invention adopts the following technical scheme: a double-cavity automatic mixing injection device comprises a shell, an injection part and a firing part, wherein the injection part and the firing part are arranged in the shell;
a first cavity and a second cavity are arranged in the injection part, the first cavity and the second cavity are coaxially arranged, the diameter of the second cavity is larger than that of the first cavity, a first piston is arranged at the position, close to the second cavity, of the first cavity, a sealing plug is arranged at one side, far away from the first cavity, of the second cavity, and a needle head device is arranged at one side, far away from the second cavity, of the sealing plug;
a push rod, a spring and a safety device are arranged in the firing part, the spring is sleeved on the push rod, one end of the push rod is provided with a second piston, and the second piston is in sealing sliding connection with the first cavity; a first through hole is formed in one end, far away from the second piston, of the inner side of the shell, a clamping jaw is arranged at the other end of the push rod, and the clamping jaw can penetrate through the first through hole and can be clamped on the outer edge of the first through hole; the safety device is connected to the end part of the shell, and an inserted rod is arranged on the safety device; the end of the housing is provided with a second through hole aligned with the first through hole, and when the safety device is connected to the end of the housing, the inserted rod of the safety device is inserted into the first through hole through the second through hole and forces the jaws to spread outwards and thus to be more tightly clamped to the outer edge of the first through hole;
the first cavity is internally provided with a liquid medicament, the second cavity is internally provided with a liquid medicament or a powder medicament, and the first piston enables the medicaments in the first cavity and the second cavity to be separated.
When the safety device is opened, the push rod pushes the sealing plug to move integrally forward under the action of the spring, the needle head device preferentially punctures the sealing plug to enable the sealing plug to be communicated with the second cavity, the spring continues to release elasticity, the second piston continues to be pushed to move towards the first cavity and drives the first piston to move towards the second cavity, liquid medicine in the first cavity is mixed with the second cavity, the spring continues to release elasticity, the second piston pushes the sealing plug end of the second cavity to move, and the mixed medicine is injected through the needle head device.
Further, the safety device is connected to the end of the housing by means of a screw connection or a snap connection.
Furthermore, the clamping jaws are four and four, and the clamping jaws are symmetrically arranged.
Further, the insertion rod includes a first thick portion received in the second through hole and a second thin portion closely interposed between the four jaws when the safety device is coupled to the end of the housing.
The safety device is provided with the inserted rod, when the safety device is connected to the rear end of the shell, the inserted rod is inserted into the first through hole in the inner side of the shell through the second through hole in the rear end of the shell, and the clamping jaws are forced to be outwards opened and are accordingly tightly clamped to the outer edge of the first through hole, so that the automatic injection device is protected, namely the automatic injection device can be excited only after the safety device is pulled out, and the situation that the automatic injection device is mistakenly excited is avoided.
Furthermore, the one end of push rod is kept away from the jack catch is provided with the arch, the second piston towards the one end of push rod be provided with the protruding matched with recess of push rod front end, the push rod with the second piston passes through groove combination mode block.
Furthermore, be equipped with on the lateral wall of first piston along the logical groove that radially sets up, lead to the groove middle part degree of depth and be less than the both sides degree of depth, the shell inner wall corresponds lead to the groove middle part and be equipped with the fixture block, first piston seal joint with in the shell.
The first piston is provided with the through groove, when the first piston and the first cavity generate certain distance displacement under the action of the spring, the first piston is separated from the clamping block, a small amount of liquid medicament in the first cavity starts to enter the second cavity to be primarily mixed with medicament in the second cavity, then the first piston is separated from the first cavity to enter the second cavity, the liquid medicament in the first cavity is secondarily mixed with the second cavity in a large amount, the mixing is more uniform,
furthermore, the needle device comprises a needle fixing shell in threaded connection with the shell, a guide sleeve arranged in the needle fixing shell, a needle and a telescopic sleeve;
the utility model discloses a syringe needle, including the shell, the uide bushing is equipped with the syringe needle set casing, the uide bushing one end is inserted and is located the shell inboardly, and the other end by the syringe needle set casing is fixed, the syringe needle is fixed to be worn to establish the middle part of uide bushing, the flexible cover with the uide bushing is kept away from one side of sealing the stopper fixed, and is used for holding the syringe needle, the syringe needle sets up the tip type for both ends, and its one end is located seal the front end of stopper.
Further, the anti-skid device further comprises an outer sleeve, the outer sleeve is sleeved outside the outer shell and the outer sleeve, and anti-skid grains are arranged on the outer side of the outer sleeve.
This embodiment makes the user hold the outer sleeve, reduces the landing scheduling problem, guarantees the convenient performance of use.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of a dual chamber automatic mixing injection device of the present invention;
FIG. 2 is an enlarged view of part A of a dual chamber automatic mixing and injecting apparatus of the present invention;
FIG. 3 is a schematic view of a dual chamber automatic mixing injection device safety feature of the present invention;
in the figure: 1 is a shell; 2 is a first cavity; 3 is a second cavity; 4 is a first piston; 5 is a sealing plug; 6 is a pillow device; 7 is a push rod; 8 is a spring; 9 is a safety device; 10 is a second piston; 11 is a first through hole; 21 is a second through hole; 71 is a claw; 91 is an insert rod; 911 is the first thick part; 912 is a second detail; 61 is a needle head fixing shell; 62 is a guide sleeve; 63 is a needle head; 64 is a telescopic sleeve; 100 is an outer sleeve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-3: the embodiment provides a double-cavity automatic mixing injection device, which comprises a shell 1, an injection part and a firing part, wherein the injection part and the firing part are arranged in the shell 1;
a first cavity 2 and a second cavity 3 are arranged in the injection part, the first cavity 2 and the second cavity 3 are coaxially arranged, the diameter of the second cavity 3 is larger than that of the first cavity 2, a first piston 4 is arranged at a position, close to the second cavity 3, of the first cavity 1, a sealing plug 5 is arranged at one side, far away from the first cavity 2, of the second cavity 3, and a needle head device 6 is arranged at one side, far away from the second cavity 3, of the sealing plug 5;
a push rod 7, a spring 8 and a safety device 9 are arranged in the triggering part, the spring 8 is sleeved on the push rod 7, a second piston 10 is arranged at one end of the push rod 7, and the second piston 10 is in sealing sliding connection with the first cavity 2; a first through hole 21 is formed in one end, far away from the second piston 10, of the inner side of the shell 1, a clamping jaw 71 is arranged at the other end of the push rod 7, and the clamping jaw 71 can penetrate through the first through hole 21 and can be clamped on the outer edge of the first through hole 21; the safety device 9 is connected to the end part of the shell 1, and the safety device 9 is provided with an insert rod 91; the end of the housing 1 is provided with a second through hole 11 aligned with the first through hole 21, and when the safety 9 is connected to the end of the housing 1, the plunger 91 of the safety 9 is inserted into the first through hole 21 through the second through hole 11 and forces the jaws 71 to spread outwardly and thus more tightly snap to the outer edge of the first through hole 21;
the first cavity 2 is filled with liquid medicament, the second cavity 3 is filled with liquid medicament or powder medicament, and the first piston 4 separates the medicaments in the first cavity from the medicaments in the second cavity.
After the safety device 9 is opened, the push rod 7 is pushed by the spring 8 to move forward integrally, the needle device 6 firstly penetrates the sealing plug 5 to be communicated with the second cavity 3, the spring 8 continuously releases the elastic force to continuously push the second piston 10 to move towards the first cavity 2 and drive the first piston 4 to move towards the second cavity 3, the liquid medicament in the first cavity 2 is mixed with the second cavity 4, the spring 8 continuously releases the elastic force, the second piston 10 is pushed to move towards the sealing plug end 5 of the second cavity 4, and the mixed medicament is injected through the needle device 6.
More specifically, the housing 1 is composed of two parts screwed together, the firing part occupying a portion and the injection part occupying a portion.
In this embodiment, the safety device 9 is screwed or snap-fitted to the end of the housing 1.
In this embodiment, the number of the claws 71 is four, and the four claws 71 are symmetrically arranged.
In this embodiment, the insertion rod 91 includes a first thick portion 911 and a second thin portion 912, and when the safety device 9 is connected to the end of the housing 1, the first thick portion 911 is received in the second through hole 11 and the second thin portion 912 is closely inserted between the four jaws 71.
In the embodiment, the safety device 9 is provided with the inserted rod 7, when the safety device 9 is connected to the rear end of the housing 1, the inserted rod is inserted into the first through hole 21 on the inner side of the housing 1 through the second through hole 11 on the rear end of the housing 1, and the clamping jaws 71 are forced to be outwards opened and are accordingly clamped to the outer edge of the first through hole 21 more tightly, so that the automatic injection device is protected, namely, the automatic injection device can be activated only after the safety device 9 is pulled out, and the situation that the automatic injection device is activated by mistake is avoided.
In this embodiment, a protrusion is disposed at an end of the push rod 7 away from the claw 71, a groove matched with the protrusion at the front end of the push rod 7 is disposed at an end of the second piston 10 facing the push rod 7, and the push rod 7 and the second piston 10 are engaged with each other in a groove coupling manner.
In other embodiments, the push rod 7 and the second piston 10 may be fixed by screwing.
In this embodiment, be equipped with on the lateral wall of first piston 4 along the logical groove of radial setting, lead to the groove middle part degree of depth and be less than the both sides degree of depth, 1 inner wall of shell corresponds logical groove middle part and is equipped with the fixture block, first piston 4 sealed joint and shell 1 in.
In the embodiment, the through groove is arranged on the first piston 4, when a certain distance displacement is generated between the first piston 4 and the first cavity 2 under the action of the spring 8, the first piston 4 is separated from the fixture block, a small amount of liquid medicament in the first cavity 2 begins to enter the second cavity 3 to be primarily mixed with medicament in the second cavity 3, then the first piston 4 is separated from the first cavity 2 to enter the second cavity 4, the liquid medicament in the first cavity 2 is secondarily mixed with a large amount of liquid medicament in the second cavity 4, and the mixing is more uniform,
in this embodiment, the needle device 6 includes a needle fixing housing 61 screwed to the housing 1, a guide sleeve 62 disposed inside the needle fixing housing 61, a needle 63, and a telescopic sleeve 64;
one end of the guide sleeve 62 is inserted into the inner side of the shell 1, the other end of the guide sleeve is fixed by the needle fixing shell 61, the needle 63 is fixedly arranged in the middle of the guide sleeve 62 in a penetrating mode, the telescopic sleeve 11 and one side, far away from the sealing plug 5, of the guide sleeve 62 are fixed and used for containing the needle 63, the needle 6 is of a tip type, two ends of the needle are located at the front end of the sealing plug 5, and one end of the needle can penetrate through the sealing plug 5 to be in contact with the medicament in the second cavity 3.
In this embodiment, the outer sleeve 100 is further included, the outer sleeve 100 is sleeved outside the housing 1, and the outer side of the outer sleeve 100 is provided with anti-slip threads.
This embodiment enables a user to hold outer sleeve 100, reduces problems such as slipping, and ensures ease of use.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present embodiments. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the embodiments.
Thus, the present embodiments are not intended to be limited to the embodiments shown herein but are to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. The double-cavity automatic mixing injection device is characterized by comprising a shell (1), an injection part and a firing part, wherein the injection part and the firing part are arranged in the shell (1);
a first cavity (2) and a second cavity (3) are arranged in the injection part, the first cavity (2) and the second cavity (3) are coaxially arranged, the diameter of the second cavity (3) is larger than that of the first cavity (2), a first piston (4) is arranged at the position, close to the second cavity (3), of the first cavity (1), a sealing plug (5) is arranged at one side, far away from the first cavity (2), of the second cavity (3), and a needle device (6) is arranged at one side, far away from the second cavity (3), of the sealing plug (5);
a push rod (7), a spring (8) and a safety device (9) are arranged in the triggering part, the spring (8) is sleeved on the push rod (7), a second piston (10) is arranged at one end of the push rod (7), and the second piston (10) is in sealing sliding connection with the first cavity (2); a first through hole (21) is formed in one end, far away from the second piston (10), of the inner side of the shell (1), a clamping jaw (71) is arranged at the other end of the push rod (7), and the clamping jaw (71) can penetrate through the first through hole (21) and can be clamped on the outer edge of the first through hole (21); the safety device (9) is connected to the end part of the shell (1), and an insert rod (91) is arranged on the safety device (9); the end of the housing (1) is provided with a second through hole (11) aligned with the first through hole (21), when the safety device (9) is connected to the end of the housing (1), the insert rod (91) of the safety device (9) is inserted into the first through hole (21) through the second through hole (11) and forces the jaws (71) to spread outwards and thus to be more tightly snapped to the outer edge of the first through hole (21);
the first cavity (2) is filled with liquid medicament, the second cavity (3) is filled with liquid medicament or powder medicament, and the first piston (4) separates the medicaments in the first cavity from the medicaments in the second cavity.
2. A dual chamber automatic mixing and injection device according to claim 1, wherein said safety means (9) is screwed or snap-fitted to the end of said housing (1).
3. The dual chamber automatic mixing injection device according to claim 1 wherein said jaws (71) are four and four of said jaws (71) are symmetrically disposed.
4. A dual chamber automatic mixing injection device according to claim 3, characterized in that said plunger (91) comprises a first thick portion (911) and a second thin portion (912), said first thick portion (911) being housed in said second through hole (11) when said safety means (9) is connected to the end of said housing (1), said second thin portion (912) being tightly interposed between said four jaws (71).
5. The dual-chamber automatic mixing and injecting device according to claim 4, wherein a protrusion is disposed at an end of the push rod (7) away from the claw (71), a groove matched with the protrusion at the front end of the push rod (7) is disposed at an end of the second piston (10) facing the push rod (7), and the push rod (7) and the second piston (10) are engaged in a groove-engaging manner.
6. The dual-chamber automatic mixing and injecting device according to claim 1, wherein the sidewall of the first piston (4) is provided with a radially disposed through groove, the depth of the middle portion of the through groove is less than the depth of the two sides, the inner wall of the housing (1) is provided with a clamping block corresponding to the middle portion of the through groove, and the first piston (4) is clamped in the housing (1) in a sealing manner.
7. The dual chamber automatic mixing injection device of claim 1 wherein said needle assembly (6) comprises a needle mounting housing (61) threadably connected to said housing (1), a guide sleeve (62) disposed within said needle mounting housing (61), a needle (63) and a telescoping sleeve (64);
uide bushing (62) one end is inserted and is located shell (1) inboard, the other end by syringe needle set casing (61) is fixed, syringe needle (63) are fixed to be worn to establish the middle part of uide bushing (62), flexible cover (11) with uide bushing (62) are kept away from the one side of sealing stopper (5) and are fixed, and are used for holding syringe needle (63), syringe needle (6) set up the tip type for both ends, and its one end is located seal the front end of stopper (5), and can pierce through seal the medicament contact in stopper (5) and second cavity (3).
8. The dual chamber automatic mixing injection device according to any of claims 1 to 7, further comprising an outer sleeve (100), wherein the outer sleeve (100) is sleeved outside the housing (1) and the outer sleeve (100) has anti-slip threads on the outer side.
CN202010858360.0A 2020-08-24 2020-08-24 Double-cavity automatic mixing injection device Pending CN112007243A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010858360.0A CN112007243A (en) 2020-08-24 2020-08-24 Double-cavity automatic mixing injection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010858360.0A CN112007243A (en) 2020-08-24 2020-08-24 Double-cavity automatic mixing injection device

Publications (1)

Publication Number Publication Date
CN112007243A true CN112007243A (en) 2020-12-01

Family

ID=73505720

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010858360.0A Pending CN112007243A (en) 2020-08-24 2020-08-24 Double-cavity automatic mixing injection device

Country Status (1)

Country Link
CN (1) CN112007243A (en)

Similar Documents

Publication Publication Date Title
AU2004286735B2 (en) Autoinjection device
US6752798B2 (en) Retractable needle medical device for injecting fluid from a pre-filled cartridge
KR102179163B1 (en) Auto-injector device
US6569115B1 (en) Pre-filled retractable needle injection device
EP0516473B1 (en) Automatic injection devices
US20140025014A1 (en) Medical Injection Device
JPH11511358A (en) Prefilled drug solution injection ampule with retractable injection needle
JP5721850B2 (en) Drug delivery device
KR19980018907A (en) Non-dosing cartridege for an injection device
EP1843808A1 (en) Device for delivering medicament
JP2015061651A (en) Method of operating drug delivery device
EP1009456A1 (en) Pre-filled retractable needle injection device
JP2005508202A (en) Prefilled safety diluent injector
EP3493864B1 (en) A safety housing based implant/ medicament injecting system
US20090157012A1 (en) Syringe with extendable and retractable needle
CN110681004A (en) Automatic injector
CN212699941U (en) Double-cavity automatic mixing injection device
CN112007243A (en) Double-cavity automatic mixing injection device
EP1066071B1 (en) Pre-filled retractable needle injection device
JP7129992B2 (en) dental safety syringe
CN114432542B (en) Automatic injector
JPH11169460A (en) Two-chamber type prefilled syringe
AU2004267899A1 (en) System for administering an injectable product
US9295787B2 (en) Adapter means for use in combination with a pre-filled syringe and a safety device, safety device and injection device
RU2440151C1 (en) Disposable syringe-cartridge with mobile needle (versions)

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination