CN106110443A - A kind of syringe - Google Patents
A kind of syringe Download PDFInfo
- Publication number
- CN106110443A CN106110443A CN201610573126.7A CN201610573126A CN106110443A CN 106110443 A CN106110443 A CN 106110443A CN 201610573126 A CN201610573126 A CN 201610573126A CN 106110443 A CN106110443 A CN 106110443A
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- CN
- China
- Prior art keywords
- push rod
- regulation
- shell
- dosage
- adjusting knob
- Prior art date
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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
- 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
- A61M5/315—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
-
- 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
- A61M5/31576—Constructional features or modes of drive mechanisms for piston rods
- A61M5/31578—Constructional features or modes of drive mechanisms for piston rods based on axial translation, i.e. components directly operatively associated and axially moved with plunger rod
- A61M5/3158—Constructional features or modes of drive mechanisms for piston rods based on axial translation, i.e. components directly operatively associated and axially moved with plunger rod performed by axially moving actuator operated by user, e.g. an injection button
-
- 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
- A61M2202/00—Special media to be introduced, removed or treated
- A61M2202/04—Liquids
-
- 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
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 kind of syringe, including shell, one end of shell is the dispensing end connecting medicament cartridge, and the other end is the adjustable side of regulation injection dosage；The inwall of shell is provided with calibration loop, and calibration loop outer surface is provided with medicament scale mark, and the outer surface of calibration loop is connected with the inner thread of shell；One end of shell is also equipped with adjusting knob, and described adjusting knob is fixing with calibration loop to be connected, and when rotating adjusting knob, calibration loop can be driven to rotate；The regulation dosage set being located in shell, one end is connected with adjusting knob, when rotating adjusting knob, regulation dosage set can be driven to rotate；Push rod one end is located in regulation dosage set, and the other end stretches out the dispensing end of shell, and the cylindrical of push rod and regulation dosage set are for threaded；The dispensing end of shell is additionally provided with and limits the reset spline set that push rod rotates；It is arranged on the injection button of shell adjustable side, when pressing injection button, regulation dosage set can be promoted to move to dispensing end.
Description
Technical field
The present invention relates to medical instruments field, be specifically related to a kind of syringe.
Background technology
For diabetics, its blood glucose target is critically important, needs timing to pay close attention to and record, and in order to subtract
The fluctuation of few patient blood glucose's index, needs by medicine control.Human insulin be a kind of known to reduce blood glucose target medicine
Thing, it must parenteral administration, could work in human body；At present, diabetics is used the most normal of human insulin
Square formula is to pass through subcutaneous injection.
At present, subcutaneous injection is used mostly the disposable or syringe of fixed dosage, but owing to patient needs injection
Dosage depends on his blood glucose target, the most in use has inconvenience；
Certainly, the most also there is a syringe that can regulate dosage, but have that complex operation, accuracy be the highest or system
The problem making high cost.
Summary of the invention
In view of this, embodiment of the present invention expectation provides a kind of syringe, can accurately regulate injection dosage, and user
Just, cost is the highest.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
Embodiments provide a kind of syringe, including shell, calibration loop, adjusting knob, regulation dosage set, push rod
And injection button；Wherein,
One end of described shell is the dispensing end connecting medicament cartridge, and the other end is the adjustable side of regulation injection dosage；
Described calibration loop outer surface is provided with medicament scale mark, and described calibration loop is arranged on the inwall of described shell, and
The outer surface of described calibration loop is connected with the inner thread of described shell；
Described adjusting knob is arranged on the adjustable side of described shell, and fixing with described calibration loop is connected, described calibration loop
Rotate with the rotation of described adjusting knob；
Described regulation dosage wears and sets in the housing, and one end is connected with described adjusting knob, described regulation dosage set
Rotate with the rotation of described adjusting knob；
One end of described push rod is located in regulation dosage set, and the other end stretches out the dispensing end of described shell, described push rod
Cylindrical and described regulation dosage set for threaded；The dispensing end of described shell is additionally provided with and limits the reset that described push rod rotates
Spline set；
Described injection button is arranged on the adjustable side of described shell, and described regulation dosage set is with the pressing of described injection button
Move to dispensing end.
Preferably, the dispensing end of described shell is provided with the baffle ring controlling injection dosage, and the cylindrical of described baffle ring is fixed on institute
Stating the precalculated position of outer casing inner wall, the endoporus of described baffle ring is less than the cylindrical of described regulation dosage set.
Preferably, described regulation dosage overlaps one end and is provided with the first face gear, and described adjusting knob is provided with and described first
Second face gear of face gear coupling, described adjusting knob is driven by described first face gear and the second face gear
Described regulation dosage set rotates.
Preferably, described regulation dosage is arranged with the bullet making the first face gear and the second face gear keep engagement
Property parts.
Preferably, described regulation dosage set includes push rod nut and regulation set, and described push rod nut is provided with and described push rod
The female thread coordinated；Described regulation set is set on described push rod nut, drives described push rod nut rotation；Described regulation wears
Being located at the inwall of described calibration loop, described regulation is overlapped one end and is provided with described first face gear.
Preferably, described regulation dosage set also includes that boosting spacing ring, described boosting spacing ring push away described in including being fixed on
Fixing end on stem nut and the positive stop end stretched in described regulation set, described positive stop end is provided with restriction described regulation set and axially moves
The elastic flange of dynamic distance.
Preferably, the endoporus of described baffle ring is divided into different the first cavity of diameter and the second cavity in the axial direction, and described
The diameter of one cavity is less than described push rod spiral shell more than the outside diameter preset value of described push rod nut, the diameter of described second cavity
Female outside diameter preset value and the outside diameter preset value more than described push rod.
Preferably, what described reset spline was overlapped is axially arranged with spline hole, and the circumference of described push rod is provided with at least one and passes through
The flat gesture face of logical whole length, the shape of cross section in described spline hole adapts with described push rod.
Preferably, one end set of described reset spline set is set to described baffle ring one end, and described reset spline overlaps the interior of one end
Wall circumference is evenly equipped with the first block of predetermined number, and described baffle ring one end cylindrical is provided with and the second gear of described first gear Block-matching
Block, described second block matches with the spacing of adjacent two the first blocks at the width of circumference.
Preferably, described injection button includes cylinder and shade, described cylinder through described adjusting knob endoporus and with
The end contact of described regulation dosage set；The diameter of described shade is more than the endoporus of described adjusting knob.
The syringe that the embodiment of the present invention provides, including shell, one end of shell is the dispensing end connecting medicament cartridge, another
End is the adjustable side of regulation injection dosage；The inwall of shell is provided with calibration loop, and calibration loop outer surface is provided with medicament graduated scale
Remember, and the outer surface of calibration loop is connected with the inner thread of shell；One end of shell is also equipped with adjusting knob, and described regulation is revolved
Button is fixing with calibration loop to be connected, and when rotating adjusting knob, calibration loop can be driven to rotate；The regulation dosage being located in shell
Set, one end is connected with adjusting knob, when rotating adjusting knob, regulation dosage set can be driven to rotate；Push rod one end is located in tune
In joint dosage set, the other end stretches out the dispensing end of shell, and the cylindrical of push rod and regulation dosage set are for threaded；The injection of shell
End is additionally provided with and limits the reset spline set that push rod rotates；It is arranged on the injection button of shell adjustable side, when pressing injection button,
Regulation dosage set can be promoted to move to dispensing end；Visible, the syringe of the embodiment of the present invention, by the regulation of adjusting knob, band
Dynamic regulation dosage set, push rod and shell, the screw of calibration loop, can accurately regulate injection dosage, easy to use, and all makes
By frame for movement, it is not necessary to use electronic control part, low cost.
Accompanying drawing explanation
Fig. 1 is the cross-sectional schematic of embodiment of the present invention syringe；
Fig. 2 is the profile schematic perspective view of embodiment of the present invention syringe；
Fig. 3 is embodiment of the present invention syringe removal regulation dosage set and the schematic diagram of push rod；
Fig. 4 is to regulate dosage set and the cross-sectional schematic of push rod combination in embodiment of the present invention syringe；
Fig. 5 is the schematic diagram of the adjusting knob in embodiment of the present invention syringe；
Fig. 6 is the schematic diagram of the regulation set in embodiment of the present invention syringe；
Fig. 7 is the schematic diagram of the push rod nut in embodiment of the present invention syringe；
Fig. 8 is the schematic diagram of the push rod in embodiment of the present invention syringe；
Fig. 9 is the schematic diagram of the reset spline set in embodiment of the present invention syringe；
Figure 10 is the schematic diagram of the baffle ring in embodiment of the present invention syringe；
Figure 11 is the end face orthographic projection schematic diagram of the regulation dosage set in embodiment of the present invention syringe.
Detailed description of the invention
Syringe in the embodiment of the present invention, including: shell, calibration loop, adjusting knob, regulation dosage set, push rod and note
Penetrate button；Wherein, one end of described shell is the dispensing end connecting medicament cartridge, and the other end is the adjustable side of regulation injection dosage；
Described calibration loop outer surface is provided with medicament scale mark, is arranged on the inwall of described shell, and the outer surface of described calibration loop
It is connected with the inner thread of described shell；Described adjusting knob is arranged on the adjustable side of described shell, and solid with described calibration loop
Fixed connection, when rotating described adjusting knob, can drive described calibration loop to rotate；Described regulation dosage wears and is located at described shell
In, one end is connected with described adjusting knob, when rotating described adjusting knob, described regulation dosage set can be driven to rotate；Described
One end of push rod is located in regulation dosage set, and the other end stretches out the dispensing end of described shell, the cylindrical of described push rod and described
Regulation dosage set is for threaded；The dispensing end of described shell is additionally provided with and limits the reset spline set that described push rod rotates；Described
Injection button is arranged on the adjustable side of described shell, when pressing described injection button, described regulation dosage set can be promoted to note
Penetrate end mobile.
The work process of the embodiment of the present invention includes installing medicament cartridge, regulation injection dosage, injecting and reset, concrete work
Make principle as follows:
1) installing medicament cartridge, described medicament cartridge can be one, i.e. for and the fixing medicament storehouse of syringe shell and
Ampoule is one, directly loads onto, has injected and directly abandoned, is disposable；Can also be split, the most first load onto
Medicament storehouse, is loaded on ampoule, has injected, and abandons ampoule, and medicament storehouse can be recycled；Medicament cartridge is from the dispensing end of shell
Loading, reset spline set is produced extruding, makes reset spline set to rotate, specific implementation sees below the application provided in fact
Execute example；
2) regulation injection dosage, rotates adjusting knob, makes the adjusting knob adjustable side spiral to shell, adjusting knob
Rotation, can drive regulation dosage set rotate, due to regulation dosage set with push rod for threadeding, but the rotation of push rod is answered
Position spline set limits, and the head of push rod has withstood the piston of medicament cartridge, and resistance is bigger, it is impossible to move axially to dispensing end, it may be assumed that
Cannot rotate, cannot move, so regulation dosage set can be to direction, the adjustable side spiral of shell, so regulation dosage set court
Dispensing end to one end of shell dispensing end with shell can produce a certain distance along with the spiral of regulation dosage set, this
Distance determines injection dosage；Adjusting knob and calibration loop are fixing connections simultaneously, thus calibration loop also can spiral, carve
Distance and the distance of regulation dosage set movement that degree ring moves have certain proportionate relationship, and the outer wall of calibration loop is provided with medicament
Scale mark, so by the reading window of shell, just can know that the dosage of injection；
In order to make injection dosage more accurate, the screw thread that the pitch of the screw thread of described calibration loop is overlapped more than described regulation dosage
Pitch, thus can be amplified the displacement of regulation dosage set by calibration loop, and medicament scale mark is more accurate.
3) injection, presses injection button, and injection button can promote regulation dosage set to move to the dispensing end of shell, regulator
Amount set and push rod are threaded, and push rod also will be promoted to move, and withstand towards one end of shell dispensing end until regulation dosage set
Shell, completes to set the injection of dosage；Simultaneously injection button when moving down also can squeeze adjustments knob, and then drive scale
Ring is made spiral and is declined, and scale makes zero.
Note: if the medicine of medicament cartridge has not been injected, then reset spline set can not rotate, and namely medicament cartridge is best
Do not disassemble, otherwise can affect the accuracy of medicament injection volume.
4) resetting, the drug injection of medicament cartridge is complete, dismantles medicament cartridge, unclamps reset spline set, manual rotation push rod, make to push away
Bar moves to the adjustable side of shell, returns to the position before not injecting, typically to arrange stop bit part, before push rod returns to not inject
Position just stops, it is impossible to rotates or mobile, is specifically shown in Application Example described below；
It addition, in order to ensure that most pharmaceutical agents cylinder can have been injected on the market, push rod needs the long enough of design, so
Can consider during design that regulator amount is cased with enough cavitys, to accommodate push rod.
The embodiment of the present invention is mainly used in diabetics, but those skilled in the art is understood that, can be used for other
Patient, does not repeats at this.
Below according to Figure of description and concrete Application Example the present invention done and illustrate further.
Simple in order to state, direction as shown in Figure 1 describes syringe and parts thereof, i.e. top, lower section and refers both to Fig. 1
Above and below in.
As Figure 1-4, a kind of syringe, including shell 1, the lower end of described shell 1 is the dispensing end connecting medicament cartridge,
Upper end is the adjustable side of regulation injection dosage；The inwall of described shell 1 is provided with calibration loop 2: described calibration loop 2 outer surface is provided with
Medicament scale mark, and the outer surface of described calibration loop 2 is connected with the inner thread of described shell 1, i.e. the outer surface of calibration loop 2
Being provided with external screw thread, the inwall of shell 1 is provided with female thread；
Further, the thread type of the outer surface of calibration loop 2 and the inwall of shell 1 is motion thread, i.e. tooth form is square
Shape, trapezoidal or zigzag, owing to substantially not stressing, preferably rectangle, such transmission efficiency is high, frictional force is little.
As in figure 2 it is shown, the adjustable side of described shell 1 is provided with adjusting knob 3, described adjusting knob 3 and described calibration loop 2
Fixing connection, when rotating described adjusting knob 3, can drive described calibration loop 2 to rotate；
Concrete, in original state, when namely calibration loop 2 is zero-bit, the lower end of calibration loop 2 is the note withstanding shell 1
Penetrating the inner bottom surface of end, namely adjusting knob 3 can only drive calibration loop 2 to do spiral upwards；
The dispensing end of described shell 1 is used for installing medicament cartridge, and it is provided with the external screw thread 12 installing described medicament cartridge, for table
Reach is succinct, and described medicament cartridge is not shown.
As it is shown in figure 5, described adjusting knob 3 is provided with draw-in groove 32, described calibration loop 2 is provided with the card base inserting described draw-in groove
(not shown), after installation, adjusting knob 3 is synchronized with the movement together with being secured to calibration loop 2；
Further, draw-in groove 32 is laid with 3 in circumference, corresponding, and described card base also is provided with three, so,
Fixing is more reliable, it is easier to transmission moment of torsion；
The outer surface of adjusting knob is provided with the annular knurl 33 increasing frictional force, and the type of annular knurl has a lot, is not construed as limiting.
As in figure 2 it is shown, the surface of described shell 1 is provided with reading window 11, it can be seen that the medicament of calibration loop 2 outer surface is carved
Scale designation, described medicament scale mark is pressed helix and is arranged, and from top to bottom, is stepped up scale value；
As it is shown in figure 1, be additionally provided with regulation dosage set 4 in the inner chamber of described shell 1, described regulation dosage set upper side is with described
Adjusting knob 3 connects, and when rotating described adjusting knob 3, described regulation dosage set can be driven to rotate.
Concrete, as shown in Figure 4 and Figure 5, described regulation dosage set upper side is provided with the first face gear 413, described regulation
Knob 3 is provided with the second face gear 31 mated with described first face gear 413, and described adjusting knob 3 is by described first
The engagement of face gear 413 and the second face gear 31 drives described regulation dosage set to rotate；
Concrete, the cross sectional shape of the tooth of described first face gear 413 and the second face gear 31 is rectangle or trapezoidal,
And for the ease of engagement smoothly, the outer end of the tooth of the first face gear 413 and the second face gear 31 is circular arc.
Further, in order to make the first face gear 413 and the second face gear 31 keep suitable precompression, just keeping
Often engagement, described regulation dosage is arranged with and makes the first face gear 413 and the second face gear 31 keep engagement
Elastomeric element 44；
Concrete, described elastomeric element 44 can be compression spring, and the line footpath of described compression spring, pitch etc. can bases
The precompression design needed, as such, it is possible to obtain precompressed force value the most accurately.
For the ease of processing, described regulation dosage set is the most integrally formed, but includes push rod nut 42 and regulation set
41, see Fig. 6 and Fig. 7；
Described regulation set 41 is set on described push rod nut 42, and described push rod nut 42 can be driven to rotate；
Concrete, as shown in Figure 6,7, the outer surface of described push rod nut 42 upper end is provided with key 421, and regulation set 41 inwalls set
There is keyway 414, drive push rod nut 42 to rotate by key with coordinate the transmission moment of torsion, i.e. regulation set 41 of keyway；
Further, described key can be spline, have employed the spline of 4 keys in the present embodiment, and so transmission moment of torsion is put down
Surely, and processing the most convenient；
Described regulation set 41 is located in the inwall of described calibration loop 2, and its upper end is provided with described first face gear 413.
In order to make the first face gear 413 and good engagement of the second face gear 31, in the present embodiment, push rod nut 42
The most do not fix with regulation set 41, in order to, in injection, be delivered to push away by the thrust of injection button by regulation set 41
Stem nut 42, is delivered to push rod then, embodiment adds a boosting spacing ring 43, and as shown in Figure 4, described boosting is spacing
Ring 43 includes the fixing end being fixed on described push rod nut 42 and the positive stop end stretched in described regulation set 41；
Described regulation set 41 is provided with and accommodates the 3rd cavitys 411 of described boosting spacing ring 43 and accommodate the of push rod nut 42
Four cavitys 412, described 3rd cavity is in the periphery of the 4th cavity, and does not mutually connect；
So when injection, injection button promotes regulation set 41 to move downward, the 3rd cavity 411 roof can withstand described in help
Push away the positive stop end of spacing ring 43, promote boosting spacing ring to move downward, just promote moving downward of push rod nut 42 so simultaneously.
Further, described boosting spacing ring is arranged with described elastomeric element 44, and the upper end of described elastomeric element 44 is withstood
Described regulation set 41, to regulation set 41 one elastic force upwards of applying, due to regulation set 41 in the axial direction with push rod nut 42
Do not fix with boosting spacing ring, it is possible to independent axially moves, it is ensured that the first face gear 413 and the second face gear
The good engagement of 31.
Described positive stop end is provided with restriction described regulation set 41 and moves axially the elastic flanges 431 of distance；Described elastic flange
Effect be that regulation set 41 when moving upward to certain position, can be blocked by described elastic flange when regulation injection dosage, this
What sample regulation set 41 and calibration loop 2 will not move up too much departs from shell 1；Described elastic flange is similar to the shape of a barb
Shape, limits regulation set 41, and the bottom of described 3rd cavity is provided with the blocker ring mated with described elastic flange, described blocker ring
Can be with regulation set 41 one, it is also possible to fill after being；Elastic flange has certain elastic, and head is arranged to cone
Shape, is so easily installed in the 3rd cavity.
As shown in Figure 4, it is equipped with push rod 5 in regulation dosage set, is exactly to be equipped with in push rod nut 42 in the present embodiment
Push rod 5, described push rod 5 upper end is located in regulation dosage set, and the dispensing end of described shell 1 is stretched out in lower end, outside described push rod 5
Circle and described regulation dosage set are for threaded；
Further, the female thread of described regulation dosage set and the externally threaded thread type of push rod 5 are motion threads, i.e.
Tooth form is rectangle, trapezoidal or zigzag, and in order to more resistant to mill, the most trapezoidal, such transmission efficiency is higher, service life is long.
According to the principle of the present embodiment, push rod 5 is when regulating dosage, it is impossible to rotate, so the dispensing end of described shell 1 sets
The reset spline set 6 that restricted described push rod 5 rotates；
As shown in FIG. 8 and 9, described reset spline set 6 be axially arranged with spline hole 61, the circumference of described push rod 5 is provided with
The flat gesture face 52 of at least one through whole length, remaining is external screw thread face 53, and the shape of cross section in described spline hole is with described
Push rod 5 adapts, as long as so reset spline set 6 does not rotates, push rod 5 just cannot rotate；
Further, flat gesture face can be multiple, but too much, can reduce the area of flank, be unfavorable for screw,
The present embodiment is two flat gesture faces；
Further, push rod 5 is provided with push rod cup 51, and when effect is to reset, during push rod upwards screw, push rod cup touches
To reset spline set, push rod returns to the position before injection, completes to reset；Described push rod cup is exactly the stop bit zero said in principle
Part.
As it is shown on figure 3, the dispensing end of described shell 1 is provided with the baffle ring 8 controlling injection dosage, the cylindrical of described baffle ring 8 is solid
It is scheduled on the precalculated position of described shell 1 inwall, for after completing the injection dosage preset, stops regulation dosage set, namely
Moving further downward of push rod 5, namely when calibration loop 2 is in zero-bit, push rod 5 cannot move down；
In order to arrange such function, described baffle ring 8 endoporus, less than the cylindrical of described regulation dosage set, so regulates dosage
The lower end of set cannot be passed through from the endoporus of baffle ring 8, and the upper end propping up described baffle ring 8 also just stops with regard to stop motion, injection.
Further, in order to limit the rotation of reset spline set 6, the upper end of described reset spline set is arranged to can be sheathed
To described baffle ring 8 lower end, and the inwall circumference of described reset spline set 6 is evenly equipped with the first block 62 of predetermined number, described gear
Ring 8 lower end cylindrical is provided with the second block 81 mated with described first block 62, and described second block is in circumferential width and phase
The spacing of two adjacent the first blocks matches, and is specifically shown in Fig. 9 and Figure 10；The inwall circumference of reset spline set 6 is evenly equipped with default
First block of quantity is similar to internal gear, and the second block that baffle ring 8 lower end cylindrical is provided with is similar to external gear, after both assemblings
Similar meshing relation, but it is not intended to transmission, but stop rotation；The method stoped is exactly that the dispensing end of shell loads medicine
Agent cylinder (not shown), medicament cartridge upwardly reset spline set 6, the first block 62 of reset spline set and the of baffle ring 8
Two blocks 81 enter engagement, and baffle ring is fixing, and therefore reset spline set just cannot rotate；And after medicament cartridge dismounting, only reset
Pivoted housing can move down, and the first block 62 and the second block 81 are disengaged from, and reset spline set can rotate, and also would not hinder
Hinder when resetting, the upwards screw of push rod.
For the ease of assembling, the outer end of the first block and the second block is arranged to circular arc.
Further, the endoporus of described baffle ring 8 is divided into the first cavity 83 and the second cavity that diameter is different in the axial direction
84, the diameter of described first cavity is more than the outside diameter preset value of described push rod nut 42, and the diameter of described second cavity is little
In the outside diameter preset value of described push rod nut 42, and more than the outside diameter preset value of described push rod 5；
The diameter of described second cavity is less than the outside diameter preset value of described push rod nut 42, it is simply that for complete pre-
If injection dosage after, stop moving down of regulation dosage set, so the diameter of described second cavity is less than described push rod spiral shell
The outside diameter preset value of female 42 is big as far as possible, but can not affect passing of push rod 5；
The diameter of described first cavity 83 is more than the outside diameter preset value of described push rod nut 42, primarily to make tune
The when of saving the rotation of dosage set and move, radially not having and rocks, described gear can be stretched in the lower end of the most described regulation dosage set
First cavity of ring 8, and the gap of the cylindrical of described regulation dosage set lower end and the first cavity is the least, so can rotate and move
Dynamic, radially there will not be and rock；
Further, elastic zero can be arranged on the cylindrical of described regulation dosage set lower end or on the inwall of the first cavity
Part, such as elastic steel ball etc., so can further ensure radially not have to rock；
Further, the inwall of described first cavity 83 is provided with the internal gear 82 that cross sectional shape is triangle, and regulates
Dosage set lower end is provided with multiple triangular hill matched with described internal gear triangular-section；
Concrete sees the end face orthograph (looking up from underface) that Figure 11, Figure 11 are regulation dosage set, as it can be seen,
The lower end of regulation dosage set includes triangular hill 422, elastic support arm 423, elastic equilibrium projection 424, wherein triangular hill
It is provided with 4, is separately positioned on 2 elastic support arms, elastic equilibrium projection 2, is distributed on circumference, for whole circumference, 4
Triangular hill and 2 elastic equilibrium projections are the most uniform；Such have the technical effect that, except can preferably ensure radially
Do not have outside rocking, also when regulation injection dosage, the sensation of obvious intermittent rotary, i.e. regulation one section can be brought to patient pre-
If dosage, have the sensation of click on hand, and sound can be sent, it is simple to patient is not in the case of seeing medicament scale mark
Operate, because the vision of a lot of diabetics has the biggest decline；And such structure also will not be to when injecting
The generation that moves axially hinder, it is ensured that regulation dosage set normal mobile, i.e. push rod 5 is normal mobile；
Further, at described elastic support arm 423 on the basis of structure has certain elasticity, described regulation dosage set
The most elastic big material of material, does not repeats at this.
The adjustable side of described shell 1 is provided with injection button 7, when pressing described injection button, can promote described regulation
Dosage set 4 moves to dispensing end；
Wherein, described injection button 7 includes cylinder and shade, and described cylinder can squeeze through the endoporus of described adjusting knob 3
Press the upper surface that described regulation dosage overlaps；The diameter of described shade is more than the endoporus of described adjusting knob 3；
Concrete, described adjusting knob 3 is provided with the through hole that the cylinder for injection button passes, so when injection, described
The cylinder of injection button passes described adjusting knob 3, extrudes the upper surface of described regulation dosage set, makes regulation dosage overlap downwards
Mobile；
In the present embodiment, when injection, the upper surface of the cylinder extruding described regulation set 41 of described injection button, a side
Face makes regulation set 41 move downward, and drives the injection movement of push rod 5, on the other hand, makes the first face gear 413 of regulation set 41
It is disengaged from state with the second face gear 31 of adjusting knob 3；So, it is more than due to the diameter of the shade of described injection button
The endoporus of described adjusting knob 3, while injection, the shade of described injection button produces extruding to adjusting knob 3, makes regulation
Knob 3 is spinned descending motion together with calibration loop 2, makes scale make zero.
The above, only presently preferred embodiments of the present invention, be not intended to limit protection scope of the present invention, all
Any amendment, equivalent and the improvement etc. made within the spirit and principles in the present invention, should be included in the protection of the present invention
Within the scope of.
Claims (10)
1. a syringe, it is characterised in that include shell, calibration loop, adjusting knob, regulation dosage set, push rod and injection by
Button；Wherein,
One end of described shell is the dispensing end connecting medicament cartridge, and the other end is the adjustable side of regulation injection dosage；
Described calibration loop outer surface is provided with medicament scale mark, and described calibration loop is arranged on the inwall of described shell, and described
The outer surface of calibration loop is connected with the inner thread of described shell；
Described adjusting knob is arranged on the adjustable side of described shell, and fixing with described calibration loop is connected, and described calibration loop is with institute
State the rotation of adjusting knob and rotate；
Described regulation dosage wears and sets in the housing, and one end is connected with described adjusting knob, and described regulation dosage set is with institute
State the rotation of adjusting knob and rotate；
One end of described push rod is located in regulation dosage set, and the other end stretches out the dispensing end of described shell, outside described push rod
Circle and described regulation dosage set are for threaded；The dispensing end of described shell is additionally provided with and limits the reset spline that described push rod rotates
Set；
Described injection button is arranged on the adjustable side of described shell, described regulation dosage set with described injection button by press to note
Penetrate end mobile.
Syringe the most according to claim 1, it is characterised in that the dispensing end of described shell is provided with and controls injection dosage
Baffle ring, the cylindrical of described baffle ring is fixed on the precalculated position of described outer casing inner wall, and the endoporus of described baffle ring is less than described regulator
The cylindrical of amount set.
Syringe the most according to claim 1, it is characterised in that described regulation dosage overlaps one end and is provided with the first end-tooth
Wheel, described adjusting knob is provided with the second face gear mated with described first face gear, and described adjusting knob is by described
First face gear and the second face gear drive described regulation dosage set to rotate.
Syringe the most according to claim 3, it is characterised in that described regulation dosage be arranged with make the first face gear and
Second face gear keeps the elastomeric element of engagement.
5. according to the syringe described in claim 3 or 4, it is characterised in that described regulation dosage set includes push rod nut and tune
Joint set, described push rod nut is provided with the female thread coordinated with described push rod；Described regulation set is set on described push rod nut, band
Dynamic described push rod nut rotation；Described regulation set is located in the inwall of described calibration loop, and described regulation is overlapped one end and is provided with described the
End face gear.
Syringe the most according to claim 5, it is characterised in that described regulation dosage set also includes boosting spacing ring, institute
State boosting spacing ring and include the fixing end being fixed on described push rod nut and the positive stop end stretched in described regulation set, described limit
Position end is provided with the elastic flange limiting the described regulation axial displacement of set.
Syringe the most according to claim 2, it is characterised in that the endoporus of described baffle ring is divided into diameter different in the axial direction
The first cavity and the second cavity, the diameter of described first cavity is more than the outside diameter preset value of described push rod nut, described
The diameter of the second cavity outside diameter preset value less than described push rod nut and the outside diameter preset value more than described push rod.
8. according to the syringe described in any one of claims 1 to 3, it is characterised in that being axially arranged with of described reset spline set
Spline hole, the circumference of described push rod is provided with the flat gesture face of at least one through whole length, the cross section shape in described spline hole
Shape adapts with described push rod.
Syringe the most according to claim 8, it is characterised in that one end set of described reset spline set is set to described baffle ring
One end, described reset spline overlaps the inwall circumference of one end and is evenly equipped with the first block of predetermined number, and described baffle ring one end cylindrical sets
Having and the second block of described first gear Block-matching, described second block is at circumferential width and adjacent two the first blocks
Spacing matches.
Syringe the most according to claim 9, it is characterised in that described injection button includes cylinder and shade, described post
Body through described adjusting knob endoporus and with described regulation dosage set end contact；The diameter of described shade is more than described
The endoporus of adjusting knob.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610573126.7A CN106110443B (en) | 2016-07-20 | 2016-07-20 | Syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610573126.7A CN106110443B (en) | 2016-07-20 | 2016-07-20 | Syringe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106110443A true CN106110443A (en) | 2016-11-16 |
| CN106110443B CN106110443B (en) | 2022-07-22 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610573126.7A Active CN106110443B (en) | 2016-07-20 | 2016-07-20 | Syringe |
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| CN106581819A (en) * | 2016-12-22 | 2017-04-26 | 尹丹华 | Injection device |
| CN107307887A (en) * | 2017-07-20 | 2017-11-03 | 华东医院 | A kind of female rats vaginal smear sample collecting apparatus |
| CN109078240A (en) * | 2018-09-30 | 2018-12-25 | 江苏德尔福医疗器械有限公司 | Disposable injection pen with dosage feedback device |
| CN109125858A (en) * | 2018-09-25 | 2019-01-04 | 苏州翰尔西医疗器械开发有限公司 | Driving means and syringe |
| CN110447618A (en) * | 2019-08-20 | 2019-11-15 | 上海禾本药业股份有限公司 | Chemical spraying device |
| CN111084918A (en) * | 2018-10-24 | 2020-05-01 | 群康生技股份有限公司 | Syringe with injection dosage adjusting function |
| WO2023224584A1 (en) * | 2022-05-18 | 2023-11-23 | Bi̇med Tekni̇k Aletler Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ | The adjustable-dosage syringe |
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| CN110447618A (en) * | 2019-08-20 | 2019-11-15 | 上海禾本药业股份有限公司 | Chemical spraying device |
| WO2023224584A1 (en) * | 2022-05-18 | 2023-11-23 | Bi̇med Tekni̇k Aletler Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ | The adjustable-dosage syringe |
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| Publication number | Publication date |
|---|---|
| CN106110443B (en) | 2022-07-22 |
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Effective date of registration: 20190715 Address after: No. 1038 Yuyang Road No. 1 Workshop, Kunshan, Suzhou City, Jiangsu Province, 215000 Applicant after: Kunshan Haerxi Medical Devices Co.,Ltd. Address before: 215000 Building 5, No. 12, Shuangdeng Road, Suzhou Industrial Park, Suzhou City, Jiangsu Province Applicant before: SUZHOU MHEALTHCARE MEDICAL EQUIPMENT DEVELOPMENT CO.,LTD. |
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