CN105879159A - Reusable injector and working method thereof - Google Patents

Reusable injector and working method thereof Download PDF

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Publication number
CN105879159A
CN105879159A CN201610202568.0A CN201610202568A CN105879159A CN 105879159 A CN105879159 A CN 105879159A CN 201610202568 A CN201610202568 A CN 201610202568A CN 105879159 A CN105879159 A CN 105879159A
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CN
China
Prior art keywords
metering
coil
injection
metering regulation
pipe
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Granted
Application number
CN201610202568.0A
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Chinese (zh)
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CN105879159B (en
Inventor
张文芳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhuhai Aohua Fuwei Medical Technology Co ltd
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Circle Holds Biological Medicine Wuxi Co Ltd
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Priority to CN201610202568.0A priority Critical patent/CN105879159B/en
Publication of CN105879159A publication Critical patent/CN105879159A/en
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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/24Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/20Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/30Syringes for injection by jet action, without needle, e.g. for use with replaceable ampoules or carpules
    • A61M5/3007Syringes for injection by jet action, without needle, e.g. for use with replaceable ampoules or carpules with specially designed jet passages at the injector's distal end

Abstract

The invention provides a reusable injector and a working method thereof. The injector can automatically inject liquid medicine by utilizing the thrust of a potential energy spring, and comprises a push rod, the potential energy spring, a metering adjustment threaded pipe, a metering adjustment ratchet connecting rod, a metering adjustment coil pipe, a coil pipe, a locating fixture block, a nut pipe, a fixed pipe, a screw rod, a needle head, an injection tube pre-filled with drug and an injection sleeve; when the needle head is contacted with the skin, the liquid medicine flows out, the resistance at the front end of a press head becomes small, the push rod is pushed forward by the potential energy spring, the metering adjustment ratchet connecting rod makes counterclockwise rotation so as to drive the coil pipe and the locating fixture block to rotate counterclockwise together, the screw rod is then driven to rotate by the locating fixture block, the screw rod moves forward, a piston in the injection tube is pushed to move forward by the press head, and the liquid medicine is extruded out from the needle head. The injector pushes the liquid medicine forward by utilizing the thrust of the potential energy spring, thus realizing automatic injection. A plurality of needle holes are formed in the porous needle head, so that porous injection can be realized at a time, and single-point pain of a patient caused in a liquid medicine injection process is relieved.

Description

A kind of reusable syringe and method of work thereof
Technical field
The invention belongs to technical field of medical instruments, be specifically related to a kind of reusable syringe and work thereof Make method.
Background technology
Needleless injector is a kind of equipment by pressure injection, and its principle is by the spring in syringe Release produces powerful power, the medicinal liquid in the ampoule of quick pushing syringe front end, and medicinal liquid passes through ampoule front end Micropore, with form moment of liquid pin through superficial cell, infiltrate through subcutaneous tissue, complete injection.It Advantage be a cancellation the person's of being injected fear to syringe needle, eliminate slight illness.
As Chinese invention patent CN101829381A discloses a kind of disposable adjustable dosage injection of insulin Pen, including the cap for brush, syringe needle, built-in piston and pre-installed the injection pipe of medicament, injection sleeve pipe, positioning wedged block, Screw rod, nut pipe, fixing pipe, coil, clutch pipe, scale localizer and button, will be enclosed within pin during use The cap for brush outside agent sleeve pipe is extracted, now, under the effect of brake spring in the end-tooth of clutch pipe and coil Teeth groove separates, and rotates forward the rotary handle of the coil stretching out fixing pipe afterbody, the elastic spine of nut pipe front end Head with the ratchet reverse coupled of fixing pipe and make the bullet relative to scale localizer of the scale locating slot in coil Arm dop slides, and elastic arm dop often slips over a scale locating slot, and coil just drives clutch pipe axially outward A mobile measurement unit, observes the scale on coil surface until after required injection volume by the form of fixing pipe Stop operating rotary handle, completes metering regulation;After syringe regulation accurately, hand pressure button end face, overcome The pressure of brake spring makes the end-tooth on clutch pipe engage with the teeth groove of coil, coil reversely rotate drive from Close pipe, nut pipe rotates and makes screw rod promote forward the piston extruded in injection pipe to make injection inject from syringe needle Enter in human body.User can observe coil surface from the form of fixing pipe during regulation metering The unit scales of 0~60.The present invention is when patient injection insulin, it is not necessary to install injection, directly by the cap for brush Taking off, regulation injection volume can use, easy to use.But the injection that the present invention is in injection pipe quilt completely After extrusion, screw rod is made to retreat because the elastic spine head of nut pipe reversely engages with the ratchet of fixing pipe, So being disposable, it is not possible to reuse.And for example Chinese invention patent CN103170038A is open A kind of insulin injection pen, including the cap for brush, syringe needle, built-in piston and pre-installed the injection pipe of medicament, pin Agent sleeve pipe, positioning wedged block, screw rod, nut pipe, fixing pipe, coil and button, will be enclosed within injection during use The cap for brush outside sleeve pipe is extracted, and to anticlockwise rotary handle to required scale, coil rotates together with rotary handle, The main spring that now one end is connected with rotary handle is distorted and deforms and produce tension force.Meanwhile, coil by Positioning wedged block is spacing, only rotates, when coil is by positioning card base between the card base of the location of two on positioning wedged block Time spacing, coil stops operating, and now, presses the button and makes main spring Hui Li, and main spring returns power and drives Rotary handle resets and rotates, and then coil resets rotation under the rotation of rotary handle together.Press the button Meanwhile, annular external member level is to moving to left, and makes brake spring be in compressive state, now annular external member and spiral shell Step on female pipe is kept completely separate, and the reset of coil rotates and drives nut pipe to rotate together, the rotation of nut pipe Drive is provided with externally threaded screw rod and rotates, and is converted into by revolving force by the parallel cut surface of screw rod both sides and pushes away Power, so that screw rod creates the displacement on axial direction, and then promotes pressure head and the feeding of piston, promotes Piston in extruding injection pipe makes injection be injected in human body from syringe needle.The present invention is easy to use, it is simple to take Band, by positioning wedged block and main spring, the regulation repeatedly of brake spring, can realize repeatedly, can precisely control The injection of insulin of system metering.But the present invention can only realize calibrated shot, it is not possible to step-less adjustment is measured, The scope of application is little, and the screw rod of the present invention cannot retreat, and is the most also disposable, not reproducible use.
From the foregoing, current insulin injection pen is all disposable, it is finished and need to abandon, the wasting of resources Seriously, being badly in need of design one can step-less adjustment metering, the administration of single tube multiple injection, single multiple spot, syringe The reusable syringe of body.
Summary of the invention
The technical problem to be solved in the present invention is to provide one can step-less adjustment metering, single tube multiple injection, list The administration of secondary multiple spot, the reusable syringe of syringe body and method of work thereof.
For solving above-mentioned technical problem, embodiments of the invention provide a kind of reusable syringe, profit With the automatic liquid medicine injection of the thrust of potential energy spring.
Wherein, described reusable syringe include push rod, potential energy spring, metering regulation corrugated tubing, Metering regulation ratchet connecting rod, metering regulation coil, coil, positioning wedged block, nut pipe, fixing pipe, spiral shell Bar, syringe needle, pre-install the injection pipe of medicament, injection sleeve pipe, wherein, described syringe needle, injection sleeve pipe and solid The most detachable connection before and after fixed tube, described injection pipe is located in injection sleeve pipe, the rear end of described injection pipe By piston seal, described nut pipe is coaxially fixedly arranged on inside fixing pipe;
Described screw rod is spirally connected with the female thread of nut pipe, and described screw rod both sides distinguish cut-out screw thread vertically Forming two the first gathering sills vertically, screw front end is pressure head, and described pressure head is positioned at the rear side of piston;
Described positioning wedged block is located at the rear side of nut pipe and is sheathed on outside screw rod, the center of described positioning wedged block Being correspondingly provided with the first feather key coordinated with the first gathering sill keyway in hole, described coil is sheathed on outside screw rod Side, the front end of coil and the rear end of positioning wedged block are by the detachable clamping of ratchet;
The front end of described metering regulation corrugated tubing and the rear end clamping of fixing pipe, described metering regulation corrugated tubing Inner side is provided with helicla flute, and described metering regulation coil is bolted in metering regulation spiral shell by the spiral bar on outer cylinder The inner side of stricture of vagina pipe, is provided with, at the front opening of described metering regulation coil, the 3rd annular boss extended internally;
Described metering regulation ratchet connecting rod is sheathed between metering regulation coil and coil, described metering regulation The front end of ratchet connecting rod and the 3rd detachable clamping of annular boss, described metering regulation ratchet connecting rod with Coil slidingtype clamping, described push rod is located at the rear side of metering regulation ratchet connecting rod, the front portion of described push rod Being sheathed on the outside of coil, the rear end of described push rod is provided with described potential energy spring.
Wherein, above-mentioned reusable syringe also includes metering regulation outer tube, outside described metering regulation Pipe box is located at the outside of metering regulation corrugated tubing, and the rear end of metering regulation outer tube is provided with the Fourth Ring extended internally Shape boss, described fourth annular boss is provided with jack, and the inner side of described fourth annular boss is pilot hole, The self-steering hole, rear portion of described push rod is stretched out;
The outside of described push rod is provided with step, and described potential energy spring is located between step and fourth annular boss;
The rear end face of described metering regulation coil is provided with and the tongue of jack grafting.
Wherein, above-mentioned reusable syringe also includes metering regulation ratchet, described metering regulation spine Tooth be located at the 3rd annular boss and metering regulation ratchet connecting rod between, described metering regulation ratchet front end with The detachable clamping of ratchet is passed through in the rear end of the 3rd annular boss;
The front end of described metering regulation ratchet connecting rod is detachable by ratchet with metering regulation ratchet rear end Clamping.
Wherein, above-mentioned reusable syringe also includes stator and locating piece, described locating piece set It is located at outside coil, between locating piece and coil, is provided with buffer spring;
Described stator is sheathed on outside coil, and the front end of stator can be divided by ratchet with the rear end of locating piece From formula clamping.
Further, described stator outer peripheral face is provided with two stator projections, described metering regulation spiral shell symmetrically Stricture of vagina pipe is provided with and the corrugated tubing bayonet socket of stator projection clamping.
Further, described coil both sides cut-out cylinder the most respectively forms two second leading vertically To groove, the inwall of described metering regulation ratchet connecting rod is provided with second coordinated with the second gathering sill keyway and leads Xiang Jian.
Wherein, described syringe needle includes porous syringe needle, taper pin, sealing ring and globe valve, described porous syringe needle For cap structure, the center at its top is provided with globe valve installing hole, the top outside described globe valve installing hole The detachable company in front end of a plurality of pin hole, the shade of described porous syringe needle and injection sleeve pipe it is evenly equipped with in portion Connect;
Described taper pin is fixedly arranged on the inner side of porous syringe needle, and the rear end of taper pin is provided with needle point, before front end is provided with After straight, the counterbore of cone, is provided with the medicament hole communicated with counterbore in described needle point;
The rear end of described sealing ring is fixedly arranged in counterbore straight hole section, and after described sealing ring is straight before being provided with, cone is close Seal centre bore, the front end of described sealing ring is provided with out liquid groove;
The outer cylinder of described globe valve includes being positioned at the face of cylinder of front portion and being positioned at the taper seat at rear portion, described circle Cylinder is slidably connected with the straight hole section of globe valve installing hole, sealing ring centre bore, described taper seat and sealing ring Centre bore taper hole section seals and coordinates, and the rear end of described globe valve is provided with ball valve counterbore, sets in described ball valve counterbore There is return spring.
Wherein, described injection sleeve pipe is provided with transparent windows.
Wherein, described fixing pipe and metering regulation screwed pipe bracket are provided with the clutch bullet for controlling screw reset Spring.
The present invention also provides for the method for work of a kind of above-mentioned syringe, comprises the steps:
(1) medicinal liquid handling: rotate counterclockwise injection sleeve pipe, by threadeding dozen between its with fixing pipe Opening, loaded in injection sleeve pipe by injection pipe, then turn clockwise injection sleeve pipe, is tightened against fixing pipe On;
(2) metering regulation: turn clockwise metering regulation outer tube, and metering regulation coil is because of tongue and jack Plug-in mounting relation, follows metering regulation outer tube and rotates clockwise together, the metering regulation screw thread filled with fixing pipe clamp Managing motionless, it is that a metering regulation completes that metering regulation coil forwards stop bit to;
(3) injection process: globe valve contact skin after pressed backward, separate with sealing ring, medicinal liquid via The medicament hole of taper pin flows in sealing ring, then flows between porous syringe needle and taper pin via going out liquid groove, Medicinal liquid flows out, and the resistance of pressure head front end diminishes, and potential energy spring promotes forward push rod, metering regulation ratchet to connect Bar rotates counterclockwise, under the second gathering sill and the second feather key keyway mating reaction, drives coil the most inverse Hour hands rotate, and coil drives positioning wedged block to rotate together by ratchet, positioning wedged block by the first feather key and The keyway of the first gathering sill coordinates drive screw rod to rotate, and screw rod moves forward relative to nut pipe, passes through pressure head Promoting the piston reach in injection pipe, medicinal liquid is extruded from syringe needle;
(4) change the outfit injection pipe: rotates injection sleeve pipe counterclockwise, by threadeding between its with fixing pipe Opening, rear pressure pressure head also pulls back push rod, and screw rod turns clockwise retrogressing to original position, the most replaceable pin Agent pipe.
Wherein, in described step (2), during metering regulation, metering regulation coil can drive metering Regulation ratchet turns clockwise, but due to the existence of potential energy spring and can not rotating of screw rod, metering regulation spine Tooth connecting rod will not and then rotate, and only can and then retreat;
After metering regulation completes, because of the existence of ratchet and can not rotating of screw rod, what potential energy spring produced pushes away Power will not make push rod promote forward;
In described step, in injection process, metering regulation ratchet connecting rod drives meter by metering regulation ratchet Amount regulation coil rotates return together with metering regulation outer tube counterclockwise;
Whether the metering no matter regulated has injected, and can be reached by syringe needle away from skin, globe valve Return under return spring effect, with sealing ring close-fitting, medicinal liquid stops flowing out and stopping injection.
Having the beneficial effect that of the technique scheme of the present invention:
1, the present invention utilizes the thrust of potential energy spring to be promoted forward by medicinal liquid, automatically injects.
2, the present invention is by metering regulation outer tube and the cooperation of metering regulation coil, can be by metering regulation Outer tube applies torsion and drives metering regulation coil to rotate relative to metering regulation corrugated tubing, and forwarding stop bit to is one Dosage regulates, and the medicinal liquid in an injection pipe can regulate injection after metering several times, it is achieved the metering of syringe Regulation and single tube multiple injection.
3, the porous syringe needle of the present invention is provided with multiple pin hole, can realize single porous injection, alleviate patient Single-point pain during liquid medicine injection.
Accompanying drawing explanation
Fig. 1 is the STRUCTURE DECOMPOSITION figure of the embodiment of the present invention one;
Fig. 2 is the sectional view of embodiment one;
Fig. 3 is the structural representation after screw rod and pressure head assemble in embodiment one;
Fig. 4 is the structure enlarged diagram of positioning wedged block in embodiment one;
Fig. 5 is the structural representation of coil in embodiment one;
Fig. 6 is the structure enlarged diagram one of stator in embodiment one;
Fig. 7 is the structural representation one of metering regulation corrugated tubing in embodiment one;
Fig. 8 is the structural representation one of metering regulation coil in embodiment one;
Fig. 9 is the structural representation of metering regulation ratchet connecting rod in embodiment one;
Figure 10 is the structural representation of metering regulation outer tube in embodiment one;
Figure 11 is the structure enlarged diagram of porous syringe needle in embodiment one;
Figure 12 is the structure enlarged diagram of taper pin in embodiment one;
Figure 13 is the structure enlarged diagram of sealing ring in embodiment one;
Figure 14 is the structure enlarged diagram of globe valve in embodiment one;
Figure 15 is the structural representation of injection sleeve pipe in embodiment one.
Description of reference numerals:
1, push rod;
2, potential energy spring;
3, metering regulation outer tube;300, fourth annular boss;301, jack;302, pilot hole;
4, metering regulation corrugated tubing;401, helicla flute;402, corrugated tubing bayonet socket;
5, metering regulation ratchet connecting rod;501, the second feather key;
6, metering regulation ratchet;
7, metering regulation coil;700, spiral bar;701, the 3rd annular boss;704, tongue;
8, stator;803, stator projection;
9, locating piece;
11, buffer spring;
12, coil;1202, the second gathering sill;
13, positioning wedged block;1300, the first feather key;;
14, nut pipe;
15, fixing pipe;
16, screw rod;1600, the first gathering sill;
17, pressure head;
18, injection sleeve pipe;1800, transparent windows;
19, taper pin;1900, needle point;1901, counterbore;1902, medicament hole;
20, sealing ring;2000, sealing ring centre bore;2001, liquid groove is gone out;
21, porous syringe needle;2100, globe valve installing hole;2101, pin hole;2102, syringe needle counterbore;
22, globe valve;2200, the face of cylinder;2201, taper seat;2202, ball valve counterbore.
Detailed description of the invention
For making the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with attached Figure and specific embodiment are described in detail.
The present invention is directed to existing syringe is disposable product, needs the problems such as hand injection, it is provided that Yi Zhongke The syringe that regulation metering, single tube multiple injection, single multiple spot are administered.
As shown in Figure 1 and Figure 2, embodiments of the invention provide a kind of reusable syringe, including Syringe needle, pre-installed the injection pipe of medicament, injection sleeve pipe 18, fixing pipe 15, nut pipe 14, screw rod 16, Positioning wedged block 13, coil 12, push rod 1, potential energy spring 2, metering regulation outer tube 3, metering regulation screw thread Pipe 4, metering regulation ratchet connecting rod 5, metering regulation ratchet 6, metering regulation coil 7, stator 8, Locating piece 9, buffer spring 11, wherein,
Described syringe needle is connected to the front end of injection sleeve pipe 18;
Described injection pipe is located in injection sleeve pipe 18, and piston seal is passed through in the rear end of described injection pipe;
The rear end of described injection sleeve pipe 18 is spirally connected with the front end of fixing pipe 15.
Described nut pipe 14 is coaxially fixedly arranged on inside fixing pipe 15.Described fixing pipe 15 is provided with button.
Described screw rod 16 is spirally connected with the female thread of nut pipe 14, and described screw rod 16 both sides are cut the most respectively Except partial threads forms two the first gathering sills 1600 vertically, screw rod 16 front end is pressure head 17, described Pressure head 17 is positioned at the rear side of piston, as shown in Figure 3.
As shown in Figure 4, described positioning wedged block 13 is located at the rear side of nut pipe 14 and is sheathed on outside screw rod 16 Side, is correspondingly provided with first coordinated with the first gathering sill 1600 keyway in the centre bore of described positioning wedged block 13 Feather key 1300.
As it is shown in figure 5, described coil 12 is located at the rear side of positioning wedged block 13 and is sheathed on outside screw rod 16, Being provided with ratchet between front end and the positioning wedged block 13 of coil 12, described coil 12 both sides are cut the most respectively Except part cylindrical surface forms two the second gathering sills 1202 vertically.
Described locating piece 9 is sheathed on outside coil 12, is provided with described buffering between locating piece 9 and coil 12 Spring 11.
As shown in Figure 6, described stator 8 is located at the rear side of locating piece 9 and is sheathed on outside coil 12, It is provided with ratchet between front end and the locating piece 9 of stator 8, the outer peripheral face of described stator 8 sets symmetrically There are two stator projections 803.
As it is shown in fig. 7, the front end of described metering regulation corrugated tubing 4 and the rear end clamping of fixing pipe 15, institute The inner side stating metering regulation corrugated tubing 4 is provided with helicla flute 401, described metering regulation corrugated tubing 4 be provided with The corrugated tubing bayonet socket 402 of stator projection 803 clamping.Described metering regulation corrugated tubing 4 front end be provided with The button bayonet socket of described button clamping.
As shown in Figure 8, described metering regulation coil 7 is bolted in metering by the spiral bar 700 on outer cylinder The inner side of regulation corrugated tubing 4, is provided with, at the front opening of described metering regulation coil 7, the 3rd extended internally Annular boss 701, the rear end face of described metering regulation coil 7 is provided with tongue 704.
Described metering regulation ratchet 6 is sheathed between metering regulation coil 7 and coil 12, and described metering is adjusted It is provided with ratchet between front end and the 3rd annular boss 701 of joint ratchet 6.
As it is shown in figure 9, described metering regulation ratchet connecting rod 5 is located at the rear side of metering regulation ratchet 6 and overlaps It is located between metering regulation coil 7 and coil 12, the front end of described metering regulation ratchet connecting rod 5 and meter Amount regulation is provided with ratchet between ratchet 6 rear end, the inwall of described metering regulation ratchet connecting rod 5 be provided with The second feather key 501 that second gathering sill 1202 keyway coordinates.
Described push rod 1 is located at the rear side of metering regulation ratchet connecting rod 5, and the front portion of described push rod 1 is sheathed on Between metering regulation coil 7 and coil 12.
As shown in Figure 10, described metering regulation outer tube 3 is sheathed on the outside of metering regulation corrugated tubing 4, meter The rear end of amount regulation outer tube 3 is provided with the fourth annular boss 300 extended internally, described fourth annular boss 300 Being provided with the jack 301 inserted for described tongue 704, the inner side of described fourth annular boss 300 is for guiding Hole 302, the self-steering hole, rear portion 302 of described push rod 1 is stretched out.
The outside of described push rod 1 is provided with step, and described potential energy spring 2 is located at step and fourth annular boss Between 300.
Described syringe needle includes porous syringe needle 21, taper pin 19, sealing ring 20 and globe valve 22, wherein,
Described porous syringe needle 21 is cap structure, and the center at its top is provided with globe valve installing hole 2100, A plurality of pin hole 2101, described porous syringe needle it is evenly equipped with on top outside described globe valve installing hole 2100 The shade of 21 is connected with the nose threads of injection sleeve pipe, as shown in figure 11.
Described taper pin 19 is fixedly arranged on the inner side of porous syringe needle 21, and the rear end of taper pin 19 is provided with needle point 1900, after front end is straight before being provided with, the counterbore 1901 of cone, is provided with in described needle point 1900 and counterbore 1901 phase Logical medicament hole 1902, as shown in figure 12.
The rear end of described sealing ring 20 is fixedly arranged in counterbore 1901 straight hole section, and described sealing ring 20 is provided with The sealing ring centre bore 2000 of front straight rear cone, the front end of described sealing ring 20 is provided with out liquid groove 2001, as Shown in Figure 13.
The outer cylinder of described globe valve 22 includes the face of cylinder 2200 being positioned at front portion and is positioned at the taper seat at rear portion 2201, the described face of cylinder 2200 and globe valve installing hole 2100, the straight hole section of sealing ring centre bore 2000 Being slidably connected, described taper seat 2201 seals with sealing ring centre bore 2000 taper hole section and coordinates, described spherical The rear end of valve is provided with ball valve counterbore 2202, is provided with return spring, such as Figure 14 in described ball valve counterbore 2202 Shown in.
The operation principle of above-mentioned syringe needle is: sealing ring 20 close-fitting is at counterbore 1901 straight hole of taper pin 19 In the diameter holes of section, the rear portion of globe valve 22 is equipped with return spring, and during injection, globe valve 22 contacts skin Being pressed backward afterwards, separate with sealing ring 20, medicinal liquid flows into via the medicament hole 1902 of taper pin 19 and seals In circle 20, then flow between porous syringe needle 21 and taper pin 19 via going out liquid groove 2001, then warp 22 32G pin holes 2101 penetrate into human body;Injection completes, and syringe needle leaves skin, and globe valve 22 is at return Return under spring effect, with sealing ring 20 close-fitting, medicinal liquid stops flowing out.
As shown in figure 15, described injection sleeve pipe 18 is provided with transparent windows 1800.
The embodiment of the present invention one also provides for the method for work of a kind of above-mentioned reusable syringe, including Following steps:
A, medicinal liquid load and unload: rotate injection sleeve pipe 18 counterclockwise, by the screw thread between itself and fixing pipe 15 even Taking out, loaded in injection sleeve pipe 18 by injection pipe, then turn clockwise injection sleeve pipe 18, is twisted Tight on fixing pipe 15.
B, metering regulation: turn clockwise metering regulation outer tube 3, and metering regulation coil 7 is because of tongue 74 He Jack 301 plug-in mounting relation, follows metering regulation outer tube 3 and rotates clockwise together, with fixing pipe 5 card dress Metering regulation corrugated tubing 4 is motionless, and it is that a metering regulation completes that metering regulation coil 7 forwards stop bit to.
During metering regulation, metering regulation coil 7 can drive metering regulation ratchet 6 to turn clockwise, But due to the existence of potential energy spring 2 and can not rotating of screw rod 16, metering regulation ratchet connecting rod 5 will not And then rotate, only can and then retreat.
Metering is after regulation completes, because of the existence of ratchet, and can not the rotating of screw rod 16, potential energy spring 2 The thrust produced will not make push rod 1 promote forward.
C, injection process: needle contact skin, medicinal liquid flows out, and the resistance of pressure head 17 front end diminishes, potential energy Spring 2 promotes forward push rod 1, metering regulation ratchet connecting rod 5 to rotate counterclockwise, at the second gathering sill 1202 With under the second feather key 501 keyway mating reaction, coil 12 is driven to rotate the most counterclockwise, coil 12 Driving positioning wedged block 13 to rotate together by ratchet, positioning wedged block 13 is by the first feather key 1300 and the The keyway of one gathering sill 1600 coordinates and drives screw rod 16 to rotate, screw rod 16 relative to nut pipe 14 to reach Dynamic, promote the piston in injection pipe to move forward by pressure head, medicinal liquid is extruded from syringe needle.
In injection process, metering regulation ratchet connecting rod 5 drives metering regulation rotation by metering regulation ratchet 6 Pipe 7 rotates together with metering regulation outer tube 3 counterclockwise.
Whether the metering no matter regulated has injected, and can be reached by stopping syringe needle away from skin, medicinal liquid Fluid stopping goes out and stops injection.
D, reuse: rotate injection sleeve pipe 18 counterclockwise, by the screw thread between itself and fixing pipe 15 even Taking out, rear pressure pressure head 17 also pulls back push rod 1, and screw rod 16 turns clockwise and retreats to original position, The most replaceable injection pipe.
The above is the preferred embodiment of the present invention, it is noted that for the common skill of the art For art personnel, on the premise of without departing from principle of the present invention, it is also possible to make some improvements and modifications, These improvements and modifications also should be regarded as protection scope of the present invention.

Claims (10)

1. a reusable syringe, it is characterised in that include syringe needle and syringe body, institute State syringe body include push rod (1) and force in that this push rod (1) is upper, the injection that realizes injection automatically is driven Dynamic device.
Reusable syringe the most according to claim 1, it is characterised in that described injection Device body includes injecting assembly and metering adjusting part, described metering adjusting part and the injection group of inside and outside suit By metering regulation ratchet connecting rod (5) detachable clamping between part, described injecting assembly includes described Push rod (1), described injection drive, coil (12), positioning wedged block (13), nut pipe (14), solid Fixed tube (15), screw rod (16), pre-install the injection pipe of medicament, injection sleeve pipe (18), wherein, described The most detachable connection before and after syringe needle, injection sleeve pipe (18) and fixing pipe (15), described injection pipe sets In injection sleeve pipe (18), piston seal is passed through in the rear end of described injection pipe, and described nut pipe (14) is same Axle is fixedly arranged on fixing pipe (15) inner side;
Described screw rod (16) is spirally connected with the female thread of nut pipe (14), and described screw rod (16) both sides are along axle Two the first gathering sills (1600) vertically, screw rod (16) front end is formed to cut-out screw thread respectively For being positioned at the pressure head (17) of the rear side of piston;
Described positioning wedged block (13) is located at the rear side of nut pipe (14) and is sheathed on screw rod (16) outside, Coordinated with the first gathering sill (1600) keyway it is correspondingly provided with in the centre bore of described positioning wedged block (13) One feather key (1300), described coil (12) is sheathed on screw rod (16) outside, before coil (12) End and the detachable clamping in rear end of positioning wedged block (13);
Described metering regulation ratchet connecting rod (5) and coil (12) slidingtype clamping, described push rod (1) Being located at the rear side of metering regulation ratchet connecting rod (5), the front portion of described push rod (1) is sheathed on coil (12) Outside;
Described injection drive is potential energy spring (2), is set in the rear end of described push rod (1).
Reusable syringe the most according to claim 2, it is characterised in that described metering Adjusting part includes metering regulation corrugated tubing (4) and metering regulation coil (7), described metering regulation screw thread The front end of pipe (4) and the fixing rear end clamping managing (15), the inner side of described metering regulation corrugated tubing (4) Being provided with helicla flute (401), described metering regulation coil (7) is by spiral bar (700) spiral shell on outer cylinder It is connected to the inner side of metering regulation corrugated tubing (4), be provided with at the front opening of described metering regulation coil (7) The 3rd annular boss (701) extended internally;
Described metering regulation ratchet connecting rod (5) be sheathed on metering regulation coil (7) with coil (12) it Between, the front end of described metering regulation ratchet connecting rod (5) and the 3rd annular boss (701) detachable card Connect.
Reusable syringe the most according to claim 3, it is characterised in that described metering Adjusting part also includes that metering regulation outer tube (3), described metering regulation outer tube (3) are sheathed on metering regulation The outside of corrugated tubing (4), the rear end of metering regulation outer tube (3) is provided with the fourth annular boss extended internally (300), described fourth annular boss (300) is provided with jack (301), described fourth annular boss (300) Inner side be pilot hole (302), the self-steering hole, rear portion (302) of push rod (1) is stretched out;
The outside of described push rod (1) is provided with step, and potential energy spring (2) is located at step and fourth annular boss (300) between;
The rear end face of described metering regulation coil (7) is provided with the tongue (704) with jack (301) grafting.
Reusable syringe the most according to claim 3, it is characterised in that described metering Adjusting part also includes that the 3rd convex annular is located in metering regulation ratchet (6), described metering regulation ratchet (6) Between platform (701) and metering regulation ratchet connecting rod (5), the front end of described metering regulation ratchet (6) The detachable clamping in rear end with the 3rd annular boss (701);
The front end of described metering regulation ratchet connecting rod (5) is detachable with metering regulation ratchet (6) rear end Clamping.
Reusable syringe the most according to claim 2, it is characterised in that described injection Device body also includes stator (8), locating piece (9), and described locating piece (9) is sheathed on coil (12) Outside, is provided with back-moving spring (11) between locating piece (9) and coil (12);
Described stator (8) is sheathed on coil (12) outside, the front end of stator (8) and locating piece (9) The detachable clamping in rear end.
Reusable syringe the most according to claim 2, it is characterised in that described coil (12) both sides cut-out cylinder the most respectively forms two the second gathering sills (1202) vertically, The inwall of described metering regulation ratchet connecting rod (5) is provided with and coordinates with the second gathering sill (1202) keyway The second feather key (501).
Reusable syringe the most according to claim 1 and 2, it is characterised in that described Syringe needle includes porous syringe needle (21), taper pin (19), sealing ring (20) and globe valve (22), wherein,
Described porous syringe needle (21) is cap structure, and the center at its top is provided with globe valve installing hole (2100), the top in described globe valve installing hole (2100) outside is evenly equipped with a plurality of pin hole (2101), The shade of described porous syringe needle (21) is detachable with the front end of injection sleeve pipe to be connected;
Described taper pin (19) is fixedly arranged on the inner side of porous syringe needle (21), and the rear end of taper pin (19) sets Having needle point (1900), the counterbore (1901) of cone after front end is straight before being provided with, described needle point is provided with in (1900) The medicament hole (1902) communicated with counterbore (1901);
The rear end of described sealing ring (20) is fixedly arranged in counterbore (1901) straight hole section, described sealing ring (20) The sealing ring centre bore (2000) of straight rear cone before being provided with, the front end of described sealing ring (20) is provided with out liquid Groove (2001);
The outer cylinder of described globe valve (22) includes being positioned at the face of cylinder (2200) of front portion and being positioned at rear portion Taper seat (2201), the described face of cylinder (2200) and globe valve installing hole (2100), sealing ring centre bore (2000) straight hole section is slidably connected, and described taper seat (2201) is bored with sealing ring centre bore (2000) Hole section seals and coordinates, and the rear end of described globe valve is provided with ball valve counterbore (2202), described ball valve counterbore (2202) Inside it is provided with return spring.
9. a method of work for the reusable syringe as according to any one of claim 1~8, It is characterized in that, comprise the steps:
(1) medicinal liquid handling: rotate injection sleeve pipe (18) counterclockwise, by between itself and fixing pipe (15) Threaded opening, loaded in injection sleeve pipe (18) by injection pipe, then turn clockwise injection sleeve pipe (18), It is tightened against on fixing pipe (15);
(2) metering regulation: turn clockwise metering regulation outer tube (3), metering regulation coil (7) is because inserting Tongue (74) and jack (301) plug-in mounting relation, follow metering regulation outer tube (3) and rotate clockwise together, Metering regulation corrugated tubing (4) with fixing pipe (5) card dress is motionless, and metering regulation coil (7) only forwards to Position is that a metering regulation completes;
(3) injection process: pressed backward after globe valve (22) contact skin, with sealing ring (20) point From, medicinal liquid flows in sealing ring (20) via the medicament hole (1902) of taper pin (19), then via going out Liquid groove (2001) flows between porous syringe needle (21) and taper pin (19), and medicinal liquid flows out, pressure head (17) The resistance of front end diminishes, and potential energy spring (2) promotes forward push rod (1), metering regulation ratchet connecting rod (5) Rotate counterclockwise, under the second gathering sill (1202) and the second feather key (501) keyway mating reaction, Driving coil (12) to rotate the most counterclockwise, coil (12) drives positioning wedged block (13) by ratchet Rising and rotate, positioning wedged block (13) passes through the first feather key (1300) and the key of the first gathering sill (1600) Slot fit drives screw rod (16) to rotate, and screw rod (16) moves forward relative to nut pipe (14), passes through Pressure head promotes the piston reach in injection pipe, and medicinal liquid is extruded from syringe needle;
(4) change the outfit injection pipe: rotates injection sleeve pipe (18) counterclockwise, by between itself and fixing pipe (15) Threaded open, depress SR, screw rod (16) is under the gyroscopic action of back-moving spring (11) Turn clockwise retrogressing to original position, the most replaceable injection pipe.
The method of work of reusable syringe the most according to claim 9, it is characterised in that In described step (2), during metering regulation, metering regulation coil (7) can drive metering regulation spine Tooth (6) turns clockwise, but due to the existence of potential energy spring (2) and can not rotating of screw rod (16), Metering regulation ratchet connecting rod (5) will not and then rotate, and only can and then retreat;
After metering regulation completes, because of the existence of ratchet and can not rotating of screw rod (16), potential energy spring (2) The thrust produced will not make push rod (1) promote forward;
In described step (3), in injection process, metering regulation ratchet connecting rod (5) is regulated by metering Ratchet (6) drives metering regulation coil (7) to rotate return counterclockwise together with metering regulation outer tube (3);
Whether the metering no matter regulated has injected, and can be reached by syringe needle away from skin, globe valve (22) return under return spring effect, with sealing ring (20) close-fitting, medicinal liquid stops flowing out and stopping note Penetrate.
CN201610202568.0A 2016-04-01 2016-04-01 Reusable injector and working method thereof Active CN105879159B (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106215288A (en) * 2016-09-28 2016-12-14 江苏德尔福医疗器械有限公司 The adjustable fixed-quantity injector of aerofluxus
CN107823759A (en) * 2017-12-25 2018-03-23 徐州仁和医疗科技有限公司 A kind of efficient needleless injector
CN109999403A (en) * 2019-05-07 2019-07-12 深圳市易体益科技有限公司 A kind of fast disassembly type rope skipping
WO2020047841A1 (en) * 2018-09-07 2020-03-12 群康生技股份有限公司 Plunging apparatus for syringe
CN111110958A (en) * 2020-02-06 2020-05-08 詹杨锋 Syringe used in medical field
CN112641531A (en) * 2020-11-25 2021-04-13 中国人民解放军陆军军医大学第二附属医院 Subcutaneous injection device
CN112891804A (en) * 2021-02-07 2021-06-04 钟星建设集团有限公司 Magnetic early warning formula fire control shower nozzle is used in wisdom fire control
CN114870160A (en) * 2022-03-31 2022-08-09 宁波睿爱产品设计有限公司 Syringe
CN115400290A (en) * 2022-09-01 2022-11-29 四川省医学科学院·四川省人民医院 Insulin injection device
CN116726316A (en) * 2023-05-31 2023-09-12 上海新耀湃科医疗科技股份有限公司 Quantitative injection pen and use method thereof

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CN203090099U (en) * 2013-02-22 2013-07-31 杭州金源生物技术有限公司 Insulin injection pen
CA2930020A1 (en) * 2013-11-14 2015-05-21 Ares Trading S.A. Medicine injection device with a pain-reduction member
CN204745211U (en) * 2015-04-09 2015-11-11 遵义医学院附属医院 Insulin syringe

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CN101829381A (en) * 2010-04-07 2010-09-15 邓源基 Disposable insulin injection pen with adjustable dosage
CN202314915U (en) * 2011-11-07 2012-07-11 宋执光 Scalp administration device
CN203090099U (en) * 2013-02-22 2013-07-31 杭州金源生物技术有限公司 Insulin injection pen
CA2930020A1 (en) * 2013-11-14 2015-05-21 Ares Trading S.A. Medicine injection device with a pain-reduction member
CN204745211U (en) * 2015-04-09 2015-11-11 遵义医学院附属医院 Insulin syringe

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106215288A (en) * 2016-09-28 2016-12-14 江苏德尔福医疗器械有限公司 The adjustable fixed-quantity injector of aerofluxus
CN107823759A (en) * 2017-12-25 2018-03-23 徐州仁和医疗科技有限公司 A kind of efficient needleless injector
US11839748B2 (en) 2018-09-07 2023-12-12 Cc Biotechnology Corporation Plunging apparatus for syringe
WO2020047841A1 (en) * 2018-09-07 2020-03-12 群康生技股份有限公司 Plunging apparatus for syringe
CN109999403A (en) * 2019-05-07 2019-07-12 深圳市易体益科技有限公司 A kind of fast disassembly type rope skipping
CN109999403B (en) * 2019-05-07 2023-12-29 江苏领康电子科技发展有限公司 Quick detach formula rope skipping
CN111110958A (en) * 2020-02-06 2020-05-08 詹杨锋 Syringe used in medical field
CN111110958B (en) * 2020-02-06 2021-08-17 唐文珍 Syringe used in medical field
CN112641531A (en) * 2020-11-25 2021-04-13 中国人民解放军陆军军医大学第二附属医院 Subcutaneous injection device
CN112891804A (en) * 2021-02-07 2021-06-04 钟星建设集团有限公司 Magnetic early warning formula fire control shower nozzle is used in wisdom fire control
CN112891804B (en) * 2021-02-07 2022-05-20 钟星建设集团有限公司 Magnetic early warning formula fire control shower nozzle is used in wisdom fire control
CN114870160A (en) * 2022-03-31 2022-08-09 宁波睿爱产品设计有限公司 Syringe
CN115400290A (en) * 2022-09-01 2022-11-29 四川省医学科学院·四川省人民医院 Insulin injection device
CN116726316A (en) * 2023-05-31 2023-09-12 上海新耀湃科医疗科技股份有限公司 Quantitative injection pen and use method thereof

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Patentee after: Zhuhai Aohua Fuwei Medical Technology Co.,Ltd.

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Patentee before: YUANRONG BIOLOGICAL PHARMACEUTICAL Co.,Ltd. WUXI