CN207970312U - A kind of high-precision pen-type injector - Google Patents
A kind of high-precision pen-type injector Download PDFInfo
- Publication number
- CN207970312U CN207970312U CN201721402601.0U CN201721402601U CN207970312U CN 207970312 U CN207970312 U CN 207970312U CN 201721402601 U CN201721402601 U CN 201721402601U CN 207970312 U CN207970312 U CN 207970312U
- Authority
- CN
- China
- Prior art keywords
- ratchet
- knob
- fixed
- screw rod
- spiral
- 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.)
- Withdrawn - After Issue
Links
- 238000002347 injection Methods 0.000 claims abstract description 26
- 239000007924 injection Substances 0.000 claims abstract description 26
- 210000003781 tooth socket Anatomy 0.000 claims description 6
- 239000003814 drug Substances 0.000 description 7
- 230000033001 locomotion Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- 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 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 102000004877 Insulin Human genes 0.000 description 1
- 108090001061 Insulin Proteins 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 229940125396 insulin Drugs 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model is related to a kind of high-precision pen-type injectors, including injection button, dose knob, clutch ratchet, brake spring, screw shell, screw rod, spiral ratchet, fixed ratchet wheel component, main body upper casing, reset knob, resetting spring, cylindrantherae storehouse and dosage show casing, the screw rod is threadedly coupled with the threaded hole of spiral ratchet, the screw rod is equipped with cooperation plane, it resets knob and is equipped with and coordinate flat reset knob hole with screw rod, it resets knob and is mounted on screw rod by resetting knob hole, and the end face for resetting knob is equipped with the second unidirectional ratchet, fixed ratchet wheel component is equipped with the first unidirectional ratchet coordinated with the second unidirectional ratchet, one end of resetting spring offsets with knob is resetted, the other end offsets with fixed ratchet wheel component, the cylindrantherae storehouse is fixedly connected with main body upper casing end.The utility model injection is laborsaving, and injection precision is high.
Description
Technical field
The utility model is related to a kind of injector for medical purpose, especially a kind of pen type high-precision syringe.
Background technology
Syringe in medical field with very extensive, for the injection to bottled medicinal liquor.For the medicine of high-precision injection
For object, such as injection of insulin etc., each patient needs the dosage injected different, and it is equivalent dress that glass medicine bottle, which, commonly
Syringe cannot meet its requirement.It is difficult control that the precision of traditional direct-push injection pen, which is held, and is needed very big
Thrust could push piston rod.
Invention content
The purpose of this utility model is to provide a kind of laborsaving, the high pen-type injectors of injection precision of injection.
In order to achieve the above object, the technical solution of the utility model is：A kind of high-precision pen-type injector, including injection
Button, dose knob, clutch ratchet, brake spring, screw shell, screw rod, spiral ratchet, fixed ratchet wheel component, main body
Upper casing resets knob, resetting spring, cylindrantherae storehouse and dosage display casing, and the dosage display casing is fixed on main body upper casing
In hole, and dosage shows that there is the endoporus of casing the first helicla flute, the dose knob periphery to be equipped with the second helicla flute, the
One helicla flute and the second helicla flute coordinate, and have bayonet and axial arranged on the first endoporus inner wall of the dose knob
First engaging tooth, screw shell slide up and down to limit in the hole of main body upper casing by fixed ratchet wheel component, the screw-casing
Pipe periphery is equipped with helix card slot, and helix card slot is connect with bayonet thread, and the clutch ratchet is located at dose knob
In first endoporus, and have and match the second axial arranged engaging tooth with the first engaging tooth, and injection button and clutch ratchet
End clamp, the second endoporus inner wall of the clutch ratchet has an axially position slot, and it is axial fixed that the periphery of spiral ratchet has
Position protrusion, the spiral ratchet stretch into the second endoporus, and axially position protrusion coordinates with axially position slot, the brake spring
One end and dose knob the first endoporus inner wall stretch out step offset, the other end offsets with clutch ratchet, spiral spine
The endoporus of tooth is threaded hole, and the screw rod is threadedly coupled with the threaded hole of spiral ratchet, and the screw rod is equipped with cooperation plane, multiple
Position knob is equipped with coordinates flat reset knob hole with screw rod, resets knob and is mounted on screw rod by resetting knob hole, and
The end face for resetting knob is equipped with the second unidirectional ratchet, and fixed ratchet wheel component is equipped with the first list coordinated with the second unidirectional ratchet
To ratchet, one end of resetting spring offsets with knob is resetted, and the other end offsets with fixed ratchet wheel component, the cylindrantherae storehouse and main body
Upper casing end is fixedly connected.
Main body upper casing end is equipped with notch, and dosage shows that casing is equipped with transparency display window, and transparency display window is located at
The indentation, there of main body upper casing is equipped with spiral shape scale strip at the second helicla flute of dose knob.
The fixed ratchet wheel component includes limiting retainer ring, limit shaft sleeve and fixed ratchet wheel, and the limiting retainer ring is equipped with bullet
Property buckle, limiting retainer ring is located in limit shaft sets of holes, and limiting retainer ring is fixedly connected by Elastic buckle with fixed ratchet wheel, and will limit
Position axle sleeve limit.
Further include piston sheet, piston sheet is fixedly connected with the end of screw rod.
The end of the spiral ratchet is equipped with elastic ratchet, and fixed tooth socket is equipped in the endoporus of the fixed ratchet wheel, described
The elastic ratchet of spiral ratchet stretches into the endoporus of fixed ratchet wheel, and with fixed tooth socket fit.
The screw pitch of second helicla flute of the dose knob periphery is more than the helix card slot of screw shell periphery.
The cylindrantherae storehouse is connect with main body upper casing end thread.
With the above structure, the utility model drives screw shell rotation, to band by dose adjusting knob
Dynamic screw rod moves along a straight line, and piston sheet is pushed to enter in the medicine bottle in cylindrantherae storehouse, and the piston for resisting medicine bottle lower end is injected,
So that screw is changed into linear motion, therefore injects laborsaving.And the utility model is noted in such a way that spiral is progressive
Volume, is changed into the linear motion of screw rod from screw, and the linear advancement traveling degree of screw rod can be calculated by the screw pitch of spiral,
When dose adjusting knob rotates, the linear advancement of screw rod is mobile a small amount of distance, may be implemented what high-precision was injected
Feature.
Description of the drawings
Fig. 1 is the structure sectional view of the utility model；
Fig. 2 is the explosive view of Fig. 1；
Fig. 3 is the dose knob stereogram of Fig. 2；
Fig. 4 is the spiral ratchet stereogram of Fig. 2；
Fig. 5 is the fixed ratchet wheel component exploded isometric figure of Fig. 2；
Fig. 6 is the reset knob stereogram of Fig. 2.
Specific implementation mode
The utility model is described in further detail below in conjunction with the embodiment that attached drawing provides.
Referring to shown in Fig. 1-6, a kind of high-precision pen-type injector, including injection button 1, dose knob 2, clutch spine
Tooth 3, screw shell 5, screw rod 6, spiral ratchet 7, fixed ratchet wheel component 8, main body upper casing 9, resets knob 10, is multiple brake spring 4
Position spring 11, cylindrantherae storehouse 12 and dosage show that casing 13, the dosage show that casing 13 is fixed in the hole of main body upper casing 9, and
Dosage shows that there is the endoporus of casing 13 first helicla flute 131,2 periphery of the dose knob to be equipped with the second helicla flute 21,
First helicla flute 131 and the second helicla flute 21 coordinate.When dose adjusting knob 2, dose knob 2 can pass through two
Helicla flute realize it is rotary rise, there is bayonet 22 and axial arranged on 211 inner wall of the first endoporus of the dose knob 2
The first engaging tooth 23, screw shell 5 by fixed ratchet wheel component 8 slide up and down to limit in the hole of main body upper casing 9, it is described
5 periphery of screw shell is equipped with helix card slot 51, and helix card slot 51 is threadedly coupled with bayonet 22, and the clutch ratchet 3 is located at
In first endoporus 211 of dose knob 2, and has and match the second axial arranged engaging tooth with the first engaging tooth 23
31, and injection button 1 and the end of clutch ratchet 3 clamp, 311 inner wall of the second endoporus of the clutch ratchet 3, which has, axially to be determined
The periphery of position slot 32, spiral ratchet 7 has axially position protrusion 71, and the spiral ratchet 7 stretches into the second endoporus 311, and axis
Coordinate to positioning protrusion 71 and axially position slot 32, one end of the brake spring 4 and the first endoporus of dose knob 2
The step 24 that 211 inner walls stretch out offsets, and the other end offsets with clutch ratchet 3, and the endoporus of spiral ratchet 7 is threaded hole, the spiral shell
Bar 6 is threadedly coupled with the threaded hole of spiral ratchet 7, and the screw rod 6 is equipped with cooperation plane 61, and reset knob 10 is equipped with and spiral shell
Bar 6 coordinates flat reset knob hole 101, resets knob 10 and is mounted on screw rod 6 by resetting knob hole 101, and resets rotation
The end face of button 10 is equipped with the second unidirectional ratchet 102, and fixed ratchet wheel component 8 is equipped with the coordinated with the second unidirectional ratchet 102
One unidirectional ratchet 81, one end of resetting spring 11 offset with knob 10 is resetted, and the other end offsets with fixed ratchet wheel component 8, described
Cylindrantherae storehouse 12 is fixedly connected with 9 end of main body upper casing.
Shown in Figure 2,9 end of main body upper casing is equipped with notch 91, and dosage shows that casing 13 is equipped with transparence display
Window 132, transparency display window 132 are located at the notch 91 of main body upper casing 9, are equipped at the second helicla flute 21 of dose knob 2
Spiral shape scale strip 25.When injection, transparency display window 132 can be penetrated and observe spiral shape scale strip 25, grasp injection in real time
Amount.
Shown in 1,2,5, the fixed ratchet wheel component 8 includes limiting retainer ring 82, limit shaft sleeve 83 and fixed ratchet wheel 84,
The limiting retainer ring 82 is equipped with Elastic buckle 821, and limiting retainer ring 82 is located in 83 hole of limit shaft sleeve, and limiting retainer ring 82 passes through bullet
Property buckle 821 be fixedly connected with fixed ratchet wheel 84, and limit shaft sleeve 83 is limited.
It is shown in Figure 2, further include piston sheet 14, piston sheet 14 is fixedly connected with the end of screw rod 6.Piston sheet 14 pushes
It is more steady when medicine bottle end.
Shown in Figure 2, the end of the spiral ratchet 7 is equipped with elastic ratchet 72, in the endoporus of the fixed ratchet wheel 84
Equipped with fixed tooth socket 841, the elastic ratchet 72 of the spiral ratchet 7 stretches into the endoporus of fixed ratchet wheel 84, and with fixed tooth socket
841 cooperations.The elastic ratchet 72 of spiral ratchet 7 can send out the auditory tone cues of " smacking one's lips " in one circle of rotation in injection process.
Shown in Figure 2, the screw pitch of the second helicla flute 21 of 2 periphery of the dose knob is more than outside screw shell 5
The helix card slot 51 in week.
Shown in Figure 2, the cylindrantherae storehouse 12 is connect with 9 end thread of main body upper casing.Facilitate and peace is unloaded into cylindrantherae storehouse 12
Powder charge bottle.
Injection button 1 is combined with buckle, can be rotated, cannot be slided each other；3 periphery of clutch ratchet has the second engagement
Tooth 31, and dose knob 2 is matched with the first engaging tooth 23；Usually under the action of brake spring 4, two part tooth forms
It is fully mated, it is ensured that rotate synchronously together.Second helicla flute 21 of part dose knob 2 is bigger, is denoted as Pw；Spiral shell
The helix card slot 51 of 5 periphery of rotation set pipe it is smaller, be denoted as Pn；Difference is denoted as △ P=Pw-Pn.
When an injection is needed, medicine bottle 15 is packed into cylindrantherae storehouse 12, then cylindrantherae storehouse 12 is threadedly coupled with main body upper casing 9, medicine
Bottle 15, which will resist, resets knob 10 so that the second unidirectional ratchet 102 is matched with the first unidirectional ratchet 81, hence into injection
State, when dose adjusting knob 2, due to the difference of inside and outside screw pitch, screw shell 5 can be by linear movement certain distance；It presses
Rotation turn around explanation, screw shell 5 and screw rod 6 and spiral ratchet 7 move up at a distance from for △ P；Clutch ratchet 3 drives at this time
Spiral ratchet 7, which also revolves, to turn around, and since axial position is fixed, and screw rod 6 can not rotate, and according to screw-driven principle, and pass through
Reasonable computation so that then screw rod 6 advances downwards identical △ P；Therefore the axial position of screw rod 6 and its piston sheet 14 of end cooperation
Do not change；When pressing injection button, tooth form that clutch ratchet 3 and dose adjusting knob 2 coordinate be in from state, this
Place's dose adjusting knob 2 is rotationally advancing a circle along helix, and by the same token, screw shell 5 is pushed down into
A trip △ P.The final piston sheet 14 that takes to also advances a trip △ P, completes injection.
Accurately be illustrated when adjusting, be carried out continuously one by one by minimal design unit 0.005mL, have per lattice it is apparent "
Clatter " sound, and have apparent feel；
When injection, only there are two the screw rods of big screw pitch to coordinate rotary motion, remaining is all linear slide, and transmission is smooth steady
It is fixed；Noise is small, good hand touch.
When regulating dosage, when residual volume of solution is less than maximum injection dosage（30 units）When, regulating dosage also will be by
Effectively control；When i.e. last remaining liquid is less than 30 units, maximal regulated dosage is equal to remaining liquid dose, can allow use
Person clearly knows last actual injection amount.
Above-described is only preferred embodiments of the present invention, it is noted that for the ordinary skill of this field
For personnel, without departing from the concept of the present invention, various modifications and improvements can be made, these all belong to
In the scope of protection of the utility model.
Claims (7)
1. a kind of high-precision pen-type injector, it is characterised in that：Including injection button (1), dose knob (2), clutch spine
Tooth (3), brake spring (4), screw shell (5), screw rod (6), spiral ratchet (7), fixed ratchet wheel component (8), main body upper casing
(9), it resets knob (10), resetting spring (11), cylindrantherae storehouse (12) and dosage and shows that casing (13), the dosage show casing
(13) it is fixed in the hole of main body upper casing (9), and dosage shows that the endoporus of casing (13) has the first helicla flute (131), it is described
Dose knob (2) periphery is equipped with the second helicla flute (21), and the first helicla flute (131) coordinates with the second helicla flute (21), institute
Stating has bayonet (22) and axial arranged the first engaging tooth (23) on the first endoporus (211) inner wall of dose knob (2),
Screw shell (5) slides up and down to limit in the hole of main body upper casing (9) by fixed ratchet wheel component (8), the screw shell
(5) periphery is equipped with helix card slot (51), and helix card slot (51) is threadedly coupled with bayonet (22), clutch ratchet (3) position
It is interior in the first endoporus (211) of dose knob (2), and have and match axial arranged second with the first engaging tooth (23)
Engaging tooth (31), and injection button (1) and the end of clutch ratchet (3) clamp, the second endoporus of the clutch ratchet (3)
(311) there is inner wall axially position slot (32), the periphery of spiral ratchet (7) to have axially position protrusion (71), the spiral spine
Tooth (7) stretches into the second endoporus (311), and axially position raised (71) coordinates with axially position slot (32), the brake spring
(4) step (24) that the first endoporus (211) inner wall of one end and dose knob (2) stretches out offsets, the other end and clutch
Ratchet (3) offsets, and the endoporus of spiral ratchet (7) is threaded hole, and the screw rod (6) and the threaded hole screw thread of spiral ratchet (7) connect
It connects, the screw rod (6) is equipped with cooperation plane (61), resets knob (10) and is revolved equipped with the reset flat with screw rod (6) cooperation
Buttonhole (101) resets knob (10) and is mounted on screw rod (6) by resetting knob hole (101), and resets the end face of knob (10)
It is equipped with the second unidirectional ratchet (102), fixed ratchet wheel component (8) is equipped with the first list coordinated with the second unidirectional ratchet (102)
To ratchet (81), one end of resetting spring (11) offsets with knob (10) is resetted, and the other end offsets with fixed ratchet wheel component (8),
The cylindrantherae storehouse (12) is fixedly connected with main body upper casing (9) end.
2. high-precision pen-type injector according to claim 1, it is characterised in that：Main body upper casing (9) end is equipped with
Notch (91), dosage show that casing (13) is equipped with transparency display window (132), and transparency display window (132) is located at main body upper casing (9)
Notch (91) at, at the second helicla flute (21) of dose knob (2) be equipped with spiral shape scale strip (25).
3. high-precision pen-type injector according to claim 1, it is characterised in that：The fixed ratchet wheel component (8) includes
Limiting retainer ring (82), limit shaft sleeve (83) and fixed ratchet wheel (84), the limiting retainer ring (82) are equipped with Elastic buckle (821),
Limiting retainer ring (82) is located in limit shaft sleeve (83) hole, and limiting retainer ring (82) passes through Elastic buckle (821) and fixed ratchet wheel (84)
It is fixedly connected, and limit shaft sleeve (83) is limited.
4. high-precision pen-type injector according to claim 1, it is characterised in that：Further include piston sheet (14), piston sheet
(14) it is fixedly connected with the end of screw rod (6).
5. high-precision pen-type injector according to claim 1, it is characterised in that：The end of the spiral ratchet (7) is set
Flexible ratchet (72), the endoporus of the fixed ratchet wheel (84) is interior to be equipped with fixed tooth socket (841), the bullet of the spiral ratchet (7)
Property ratchet (72) stretch into the endoporus of fixed ratchet wheel (84), and coordinate with fixed tooth socket (841).
6. high-precision pen-type injector according to claim 1, it is characterised in that：Dose knob (2) periphery
The second helicla flute (21) screw pitch be more than screw shell (5) periphery helix card slot (51).
7. high-precision pen-type injector according to claim 1, it is characterised in that：The cylindrantherae storehouse (12) and main body upper casing
(9) end thread connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721402601.0U CN207970312U (en) | 2017-10-27 | 2017-10-27 | A kind of high-precision pen-type injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721402601.0U CN207970312U (en) | 2017-10-27 | 2017-10-27 | A kind of high-precision pen-type injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207970312U true CN207970312U (en) | 2018-10-16 |
Family
ID=63770957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721402601.0U Withdrawn - After Issue CN207970312U (en) | 2017-10-27 | 2017-10-27 | A kind of high-precision pen-type injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207970312U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107875487A (en) * | 2017-10-27 | 2018-04-06 | 江苏德尔福医疗器械有限公司 | High-precision pen-type injector |
| CN116984858A (en) * | 2023-09-27 | 2023-11-03 | 深圳刷新生物传感科技有限公司 | Assembled implantation device of invasive biosensor |
-
2017
- 2017-10-27 CN CN201721402601.0U patent/CN207970312U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107875487A (en) * | 2017-10-27 | 2018-04-06 | 江苏德尔福医疗器械有限公司 | High-precision pen-type injector |
| CN107875487B (en) * | 2017-10-27 | 2024-01-26 | 江苏德尔福医疗器械有限公司 | High-precision pen type injector |
| CN116984858A (en) * | 2023-09-27 | 2023-11-03 | 深圳刷新生物传感科技有限公司 | Assembled implantation device of invasive biosensor |
| CN116984858B (en) * | 2023-09-27 | 2023-11-28 | 深圳刷新生物传感科技有限公司 | Assembled implantation device of invasive biosensor |
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| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20181016 Effective date of abandoning: 20240126 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20181016 Effective date of abandoning: 20240126 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |