CN107050574B - Disposable injection pen with memory function - Google Patents
Disposable injection pen with memory function Download PDFInfo
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- CN107050574B CN107050574B CN201710304133.1A CN201710304133A CN107050574B CN 107050574 B CN107050574 B CN 107050574B CN 201710304133 A CN201710304133 A CN 201710304133A CN 107050574 B CN107050574 B CN 107050574B
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- 238000002347 injection Methods 0.000 title claims abstract description 22
- 239000007924 injection Substances 0.000 title claims abstract description 22
- 230000006386 memory function Effects 0.000 title claims abstract description 12
- 239000003814 drug Substances 0.000 claims abstract description 23
- 230000002457 bidirectional effect Effects 0.000 claims description 16
- 230000009191 jumping Effects 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 6
- 210000001503 joint Anatomy 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 6
- 206010011409 Cross infection Diseases 0.000 abstract description 2
- 206010029803 Nosocomial infection Diseases 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract description 2
- NOESYZHRGYRDHS-UHFFFAOYSA-N insulin Chemical compound N1C(=O)C(NC(=O)C(CCC(N)=O)NC(=O)C(CCC(O)=O)NC(=O)C(C(C)C)NC(=O)C(NC(=O)CN)C(C)CC)CSSCC(C(NC(CO)C(=O)NC(CC(C)C)C(=O)NC(CC=2C=CC(O)=CC=2)C(=O)NC(CCC(N)=O)C(=O)NC(CC(C)C)C(=O)NC(CCC(O)=O)C(=O)NC(CC(N)=O)C(=O)NC(CC=2C=CC(O)=CC=2)C(=O)NC(CSSCC(NC(=O)C(C(C)C)NC(=O)C(CC(C)C)NC(=O)C(CC=2C=CC(O)=CC=2)NC(=O)C(CC(C)C)NC(=O)C(C)NC(=O)C(CCC(O)=O)NC(=O)C(C(C)C)NC(=O)C(CC(C)C)NC(=O)C(CC=2NC=NC=2)NC(=O)C(CO)NC(=O)CNC2=O)C(=O)NCC(=O)NC(CCC(O)=O)C(=O)NC(CCCNC(N)=N)C(=O)NCC(=O)NC(CC=3C=CC=CC=3)C(=O)NC(CC=3C=CC=CC=3)C(=O)NC(CC=3C=CC(O)=CC=3)C(=O)NC(C(C)O)C(=O)N3C(CCC3)C(=O)NC(CCCCN)C(=O)NC(C)C(O)=O)C(=O)NC(CC(N)=O)C(O)=O)=O)NC(=O)C(C(C)CC)NC(=O)C(CO)NC(=O)C(C(C)O)NC(=O)C1CSSCC2NC(=O)C(CC(C)C)NC(=O)C(NC(=O)C(CCC(N)=O)NC(=O)C(CC(N)=O)NC(=O)C(NC(=O)C(N)CC=1C=CC=CC=1)C(C)C)CC1=CN=CN1 NOESYZHRGYRDHS-UHFFFAOYSA-N 0.000 description 4
- 102000004877 Insulin Human genes 0.000 description 2
- 108090001061 Insulin Proteins 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229940125396 insulin Drugs 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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
-
- 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
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31533—Dosing mechanisms, i.e. setting a dose
- A61M5/31545—Setting modes for dosing
- A61M5/31548—Mechanically operated dose setting member
- A61M5/3155—Mechanically operated dose setting member by rotational movement of dose setting member, e.g. during setting or filling of a syringe
-
- 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
- A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
- A61M5/31566—Means improving security or handling thereof
-
- 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
- A61M5/50—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 having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/19—Constructional features of carpules, syringes or blisters
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/27—General characteristics of the apparatus preventing use
- A61M2205/273—General characteristics of the apparatus preventing use preventing reuse, e.g. of disposables
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
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 disposable injection pen with a memory function, which comprises a shell, wherein a metering cylinder with a head part extending out of the shell is arranged in the shell, an upper driver is arranged in the metering cylinder, a gear connecting cylinder is arranged in the upper driver, a push cylinder is arranged in the gear connecting cylinder, and a push rod is arranged in the push cylinder. The invention has simple structure, convenient assembly, better safety and better cross infection prevention, can be injected only once, and can lock the injection pen when a certain amount of liquid medicine is injected, thereby achieving the memory function.
Description
Technical Field
The invention relates to a disposable injection pen with a memory function.
Background
The insulin injector which can be carried at any time and is convenient to use is needed by diabetics, related injection products exist in the market at present, most of injectors adopt a screw driving principle, and the principle can achieve the purpose of advancing a push rod through rotation.
Most injection pens are basically used in the same mode, a screw at the tail end is firstly screwed to rotate out a desired scale, then a needle head at the other end is inserted into a part to be injected of a body, and then a tail pushing handle is pushed to inject liquid medicine.
For example, in the patent CN101829381B, patent No. 2015.4.25 entitled "an insulin injection pen with adjustable dosage"; it has the following problems:
1. the main driving screw rotary drum and the shell are integrated, so that the injection smoothness is not facilitated, and the control precision is low.
2. Has no memory function, namely the tail part can be continuously adjusted after the liquid medicine in the medicine bottle is injected.
Disclosure of Invention
The invention aims to provide a disposable injection pen with a memory function aiming at the defects in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: a disposable injection pen with a memory function comprises a shell, wherein a metering cylinder with a head extending out of the shell is arranged in the shell, an upper driver is arranged in the metering cylinder, a gear connecting cylinder is arranged in the upper driver, a push cylinder is arranged in the gear connecting cylinder, and a push rod is arranged in the push cylinder; the head of the metering cylinder is internally meshed with the left end of a bidirectional jumping gear, and the right end of the bidirectional jumping gear is meshed with the right end of the gear connecting cylinder; the head of the gear connecting cylinder is also sequentially provided with a sealing cover and a tail handle, and a small spring is arranged between the tail handle and the gear connecting cylinder; the upper side and the lower side in the metering cylinder are correspondingly provided with first guide ribs along the axial direction; an annular memory part is arranged between the first guide ribs, the inner side of the annular memory part is matched and connected with an external thread structure arranged on the right circumference of the gear connecting cylinder, and when the external thread of the gear connecting cylinder is screwed to the bottom clockwise, the annular memory part is clamped; a second guide rib is axially arranged on the outer circumference of the left side of the gear connecting cylinder and is matched and connected with a second guide groove axially arranged on the inner side of the upper driver; a third guide rib is axially arranged on the outer circumference of the push cylinder, the third guide rib is matched and connected with a third guide groove axially arranged on the inner side of the gear connecting cylinder, and the left outer side of the push cylinder is matched and connected with an annular guide rib arranged on the left inner side of the upper driver through an annular guide groove; the outer circumference of the left side part of the push rod is provided with a push rod external thread, the right side part of the push rod is axially provided with a fourth guide rib, the push rod is in threaded connection with a lower driver arranged in the head part of the upper driver through the push rod external thread, and the push rod is in threaded connection with the head part of the push cylinder through the push rod external thread; the push rod is matched and connected with a fourth guide groove axially arranged on the inner side of the push cylinder through a fourth guide rib; the left end of the push cylinder is provided with a push cylinder gear ring and is matched with a one-way gear arranged at the rear end of the lower driver; a large spring which can jump between the lower driver and the one-way gear is arranged between the push cylinder and the lower driver; the large spring is matched with the lower driver and is clamped; the lower driver is provided with a U-shaped boss, and the U-shaped boss is matched with a U-shaped opening on the one-way gear to enable the one-way gear to only axially jump; the inner thread section is arranged in the metering cylinder, the inner thread section is matched with the outer thread section on the upper driver, and clamping points are arranged at the maximum position and the minimum position; a medicine bottle container part is arranged at the right end of the lower driver on the inner side of the shell, and a pen cap matched with the shell is arranged on the outer side of the medicine bottle container part; a medicine bottle piece is arranged in the medicine bottle container piece, and the left end of the push rod is in butt joint with a rubber plug at one end of the medicine bottle piece through a arranged crown.
The invention has the beneficial effects that: the invention has simple structure, convenient assembly, high control precision during injection, better safety and prevention of cross infection, can only carry out one-time injection, and can lock the injection pen when a certain amount of liquid medicine is injected, thereby achieving the memory function.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an exploded view of the overall structure of the present invention;
FIG. 3 is a first partial structural assembly view of the present invention;
FIG. 4 is a second partial structural assembly view of the present invention;
FIG. 5 is a third partial structural assembly view of the present invention;
fig. 6 is a fourth partial structural assembly view of the present invention.
Detailed Description
Fig. 1 shows a disposable injection pen with memory function, which comprises a housing 9, wherein a metering cylinder 14 with a head portion extending out of the housing 9 is arranged in the housing 9, an upper driver 6 is arranged in the metering cylinder 14, a gear connecting cylinder 5 is arranged in the upper driver 6, a push cylinder 11 is arranged in the gear connecting cylinder 5, and a push rod 7 is arranged in the push cylinder 11; the inside of the head of the metering cylinder 14 is meshed with the left end of a bidirectional jumping gear 3, and the right end of the bidirectional jumping gear 3 is meshed with the right end of the gear connecting cylinder 5; the head of the gear connecting cylinder 5 is also sequentially provided with a sealing cover 2 and a tail handle 1, and a small spring 4 is arranged between the tail handle 1 and the gear connecting cylinder 5; the upper side and the lower side in the metering cylinder 14 are correspondingly provided with first guide ribs along the axial direction; an annular memory part 16 is arranged between the first guide ribs, the inner side of the annular memory part 16 is matched and connected with an external thread structure arranged on the right side circumference of the gear connecting cylinder 5, and when the external thread of the gear connecting cylinder 5 is screwed to the bottom clockwise, the annular memory part 16 is clamped; a second guide rib is axially arranged on the outer circumference of the left side of the gear connecting cylinder 5 and is matched and connected with a second guide groove axially arranged on the inner side of the upper driver 6; a third guide rib is axially arranged on the outer circumference of the push cylinder 11, the third guide rib is matched and connected with a third guide groove axially arranged on the inner side of the gear connecting cylinder 5, and the left outer side of the push cylinder 11 is matched and connected with an annular guide rib arranged on the left inner side of the upper driver 6 through an annular guide groove; a push rod external thread is arranged on the outer circumference of the left side part of the push rod 7, a fourth guide rib is axially arranged on the right side part of the push rod 7, the push rod 7 is in threaded connection with a lower driver arranged in the head of the upper driver 6 through the push rod external thread, and the push rod 7 is in threaded connection with the head of the push cylinder through the push rod external thread; the push rod 7 is matched and connected with a fourth guide groove axially arranged on the inner side of the push cylinder 11 through a fourth guide rib; the left end of the push cylinder 11 is provided with a push cylinder gear ring and is matched with a one-way gear 17 arranged at the rear end of the lower driver 13; a large spring 12 which can jump between the lower driver 13 and the one-way gear 17 is arranged between the push cylinder 11 and the lower driver 13; the large spring 12 is matched with the lower driver 13 and is clamped; the lower driver 13 is provided with a U-shaped boss, and the U-shaped boss is matched with a U-shaped opening on the one-way gear 17 to enable the one-way gear 17 to only axially jump; the metering cylinder 14 is internally provided with an internal thread section which is matched with an external thread section on the upper driver 6 and is provided with a clamping point at the maximum position and the minimum position; a medicine bottle container part 18 is arranged at the right end of the lower driver on the inner side of the shell 9, and a pen cap 10 matched with the shell 9 is arranged on the outer side of the medicine bottle container part 18; wherein, a medicine bottle piece 15 is arranged in the medicine bottle container piece 18, and the left end of the push rod 7 is butted with a rubber plug at one end of the medicine bottle piece 15 through a arranged crown 8.
The working principle is as follows:
(1) Metering regulation
A) When scale adjustment is increased: the metering cylinder 14 is screwed clockwise, the scales are increased one by one when seen from a view window, the upper driver 6 is fixed with the shell 9, the large spring 12 and the upper driver 6 are assembled and locked, the large spring 12 and the annular memory part 16 are locked in the rotating direction and can only move in the axial direction, the teeth of the push cylinder 11 and the annular memory part 16 are seized together in the clockwise direction, the gear connecting cylinder 5 and the push cylinder 11 can only move axially due to the matching relationship of the rib and the groove, and the rotating direction is locked, so when the scales are increased and adjusted, the push cylinder 11 is not moved, the bidirectional jumping gear 3 and the gear connecting cylinder 5 are seized together due to the teeth, the bidirectional jumping gear 3 and the gear connecting cylinder 5 do not move relatively, and the bidirectional jumping gear 3 and the metering cylinder 14 do not seize due to clockwise needle teeth, and the small spring 4 is propped against the gear connecting cylinder 5, so that the bidirectional jumping gear 3 and the metering cylinder 14 jump periodically. When the scale is increased for adjustment, the axial moving part comprises a tail handle 1, a sealing cover 2, a bidirectional jumping gear 3, a small spring 4 and a gear connecting cylinder 5; the parts which only do axial movement and do not rotate are provided with a bidirectional jumping gear 3 and a gear connecting cylinder 5.
B) When the scale is reduced and adjusted: if the adjustment in the step A is too much, the scale needs to be adjusted back at the moment, the metering cylinder 14 is screwed anticlockwise, the scales are seen to be reduced one by one, the mutual relationship is the same as that in the step A, the difference is that the teeth of the push cylinder 11 and the one-way gear 17 are not locked in the direction, the bouncing trend exists, but the transmission force is not enough to enable the teeth between the push cylinder 11 and the one-way gear 17 to bounce, so the push cylinder 11 is also not moved like the step A at the moment, because the teeth of the two-way bouncing gear 3 and the teeth of the metering cylinder 14 are locked during anticlockwise rotation, the two-way bouncing gear 3 and the teeth of the gear connecting cylinder 5 are not mutually rotated, and the teeth bounce occurs between the two-way bouncing gear 3 and the gear connecting cylinder 5. Wherein, the axial moving part comprises a tail handle 1, a sealing cover 2, a bidirectional jumping gear 3, a small spring 4 and a gear connecting cylinder 5; the part which only does axial movement and does not rotate is provided with a gear connecting cylinder 5.
C memory function principle: when scales are adjusted, the metering cylinder 14 moves clockwise, grooves are formed in the outer wall of the annular memory piece 16, ribs are formed in the inner wall of the metering cylinder 14 and have rib-groove matching relations, so that the annular memory piece 16 also moves clockwise, the gear connecting cylinder 5 does not rotate at the moment, and the annular memory piece 16 and the gear connecting cylinder 5 have thread matching relations, so that the annular memory piece 16 rotates on the gear connecting cylinder 5, when scales are increased, the annular memory piece 16 moves clockwise upwards relative to the gear connecting cylinder 5, if the scales are adjusted to be too large, the annular memory piece 16 moves anticlockwise downwards relative to the gear connecting cylinder 5, after scales are adjusted, after liquid medicine is injected, the gear connecting cylinder 5, the metering cylinder 14 and the annular memory piece 16 do not move simultaneously anticlockwise, so that the annular memory piece 16 does not move relative to the gear connecting cylinder 5, the steps are repeated, the annular memory piece 16 moves to the thread of the gear connecting cylinder 5 to the end on the thread of the gear connecting cylinder 5, if the scales are increased, the metering cylinder 14 needs to be screwed clockwise, the gear connecting cylinder 5 cannot rotate, the annular memory piece 16 is screwed on the thread of the gear connecting cylinder 5, the annular memory piece 16 cannot rotate to the uppermost thread, and the metering cylinder 14 cannot rotate, so that a certain amount of the annular memory piece 16 cannot be locked, when the injection pen is screwed, the annular memory piece 16, and the pen cannot be in a certain amount of the injection pen cannot be completely, and the injection pen cannot be injected, so that the annular memory piece 16 cannot be completely, and the annular memory pen cannot be in a certain amount of the pen cannot be injected, and the pen cannot be completely, and the pen cannot be injected, so that the pen cannot be injected, and the pen cannot be completely, so that the pen cannot be injected, and the pen cannot be injected.
Injection of drugs
During injection (the needle head and the liquid medicine bottle are correctly installed), the tail handle 1 is pressed, the metering cylinder 14 rotates anticlockwise at the moment, continuous 'rattling' tooth jumping sound can be heard, when the tail handle 1 is pressed downwards, compared with the step B of adjusting back the scales, the small spring 4 is compressed to be the shortest, the gear connecting cylinder 5 has no clearance of up-and-down jumping, the bidirectional bouncing gear 3 and the gear connecting cylinder 5 are locked in the rotating direction due to the existence of teeth, the upper driver 6 is not moved, the metering cylinder 14 and the upper driver 6 have a thread transmission relationship, during propulsion, the metering cylinder 14 moves anticlockwise, the gear connecting cylinder 5 and the metering cylinder 14 have tooth meshing, the push cylinder 11 and the push rod 7 have a key groove matching relationship, at the moment, the push cylinder 11 moves anticlockwise, the push rod 7 also moves anticlockwise, and in conclusion, the bidirectional bouncing gear 3, the gear connecting cylinder 5, the push rod 7, the push cylinder 11 and the metering cylinder 14 move anticlockwise together, and the push rod 7 moves anticlockwise, and the lower driver 13 does not move, and the push rod 7 rotates, so that the injection head 8 can be pushed. Wherein, the axial moving part comprises a tail handle 1, a sealing cover 2, a bidirectional jumping gear 3, a small spring 4, a gear connecting cylinder 5, a push rod 7, a handle head 8, a metering cylinder 14, an annular memory part 16 and a one-way gear 17; the part which only does axial movement and does not rotate comprises a tail handle 1, a handle head 8, a one-way gear 17 and the part which only does rotation and does not rotate axially comprises a push cylinder 11.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (1)
1. A disposable injection pen with a memory function is characterized by comprising a shell, wherein a metering cylinder with a head part extending out of the shell is arranged in the shell, an upper driver is arranged in the metering cylinder, a gear connecting cylinder is arranged in the upper driver, a push cylinder is arranged in the gear connecting cylinder, and a push rod is arranged in the push cylinder; the head of the metering cylinder is internally meshed with the left end of a bidirectional jumping gear, and the right end of the bidirectional jumping gear is meshed with the right end of the gear connecting cylinder; the head of the gear connecting cylinder is also sequentially provided with a sealing cover and a tail handle, and a small spring is arranged between the tail handle and the gear connecting cylinder; the upper side and the lower side in the metering cylinder are correspondingly provided with first guide ribs along the axial direction; an annular memory part is arranged between the first guide ribs, the inner side of the annular memory part is matched and connected with an external thread structure arranged on the right circumference of the gear connecting cylinder, and when the external thread of the gear connecting cylinder is screwed to the bottom clockwise, the annular memory part is clamped; a second guide rib is axially arranged on the outer circumference of the left side of the gear connecting cylinder and is matched and connected with a second guide groove axially arranged on the inner side of the upper driver; a third guide rib is axially arranged on the outer circumference of the push cylinder, the third guide rib is matched and connected with a third guide groove axially arranged on the inner side of the gear connecting cylinder, and the left outer side of the push cylinder is matched and connected with an annular guide rib arranged on the left inner side of the upper driver through an annular guide groove; the outer circumference of the left side part of the push rod is provided with a push rod external thread, the right side part of the push rod is axially provided with a fourth guide rib, the push rod is in threaded connection with a lower driver arranged in the head part of the upper driver through the push rod external thread, and the push rod is in threaded connection with the head part of the push cylinder through the push rod external thread; the push rod is matched and connected with a fourth guide groove axially arranged on the inner side of the push cylinder through a fourth guide rib; the left end of the push cylinder is provided with a push cylinder gear ring and is matched with a one-way gear arranged at the rear end of the lower driver; a large spring which can jump between the lower driver and the one-way gear is arranged between the push cylinder and the lower driver; the large spring is matched with the lower driver and is clamped; the lower driver is provided with a U-shaped boss, and the U-shaped boss is matched with a U-shaped opening on the one-way gear to enable the one-way gear to only axially jump; the inner thread section is arranged in the metering cylinder, the inner thread section is matched with the outer thread section on the upper driver, and clamping points are arranged at the maximum position and the minimum position; a medicine bottle container piece is arranged on the inner side of the shell and positioned at the right end of the lower driver, and a pen cap matched with the shell is arranged on the outer side of the medicine bottle container piece; a medicine bottle piece is arranged in the medicine bottle container piece, and the left end of the push rod is in butt joint with a rubber plug at one end of the medicine bottle piece through a arranged handle head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710304133.1A CN107050574B (en) | 2017-04-24 | 2017-04-24 | Disposable injection pen with memory function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710304133.1A CN107050574B (en) | 2017-04-24 | 2017-04-24 | Disposable injection pen with memory function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107050574A CN107050574A (en) | 2017-08-18 |
| CN107050574B true CN107050574B (en) | 2023-02-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710304133.1A Active CN107050574B (en) | 2017-04-24 | 2017-04-24 | Disposable injection pen with memory function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107050574B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113332537A (en) * | 2021-06-04 | 2021-09-03 | 常熟康信医疗器械有限公司 | Portable intelligent syringe assembly |
| CN114522300A (en) * | 2022-04-09 | 2022-05-24 | 珺中(常州)科技有限公司 | Connecting device for liquid injection pen |
| CN114668929A (en) * | 2022-04-09 | 2022-06-28 | 珺中(常州)科技有限公司 | A refill section of thick bamboo connecting device for disposable liquid injection pen |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101068586A (en) * | 2004-12-01 | 2007-11-07 | 诺和诺德公司 | injection device |
| CN101115520A (en) * | 2005-02-11 | 2008-01-30 | 诺和诺德公司 | injection device |
| CN101854968A (en) * | 2007-09-25 | 2010-10-06 | 克劳斯·施密特·默勒 | Dosing delivery device with drive mechanism |
| CN203017504U (en) * | 2012-12-04 | 2013-06-26 | 邓源基 | Adjustable Metering Syringes |
| CN104093440A (en) * | 2012-02-09 | 2014-10-08 | 特克法马许可公司 | Injection unit for administering or delivering fluid product |
| TW201526937A (en) * | 2014-01-08 | 2015-07-16 | C C Biotechnology Corp | Syringe |
| CN207708283U (en) * | 2017-04-24 | 2018-08-10 | 无锡米诺医疗科技有限公司 | A kind of disposable injection pen with memory function |
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2017
- 2017-04-24 CN CN201710304133.1A patent/CN107050574B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101068586A (en) * | 2004-12-01 | 2007-11-07 | 诺和诺德公司 | injection device |
| CN101115520A (en) * | 2005-02-11 | 2008-01-30 | 诺和诺德公司 | injection device |
| CN101854968A (en) * | 2007-09-25 | 2010-10-06 | 克劳斯·施密特·默勒 | Dosing delivery device with drive mechanism |
| CN104093440A (en) * | 2012-02-09 | 2014-10-08 | 特克法马许可公司 | Injection unit for administering or delivering fluid product |
| CN203017504U (en) * | 2012-12-04 | 2013-06-26 | 邓源基 | Adjustable Metering Syringes |
| TW201526937A (en) * | 2014-01-08 | 2015-07-16 | C C Biotechnology Corp | Syringe |
| CN207708283U (en) * | 2017-04-24 | 2018-08-10 | 无锡米诺医疗科技有限公司 | A kind of disposable injection pen with memory function |
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| CN107050574A (en) | 2017-08-18 |
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