CN101856526B - Disposable safe syringe with automatically-retracted and replaceable needle - Google Patents
Disposable safe syringe with automatically-retracted and replaceable needle Download PDFInfo
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- CN101856526B CN101856526B CN200910163454XA CN200910163454A CN101856526B CN 101856526 B CN101856526 B CN 101856526B CN 200910163454X A CN200910163454X A CN 200910163454XA CN 200910163454 A CN200910163454 A CN 200910163454A CN 101856526 B CN101856526 B CN 101856526B
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- needle
- syringe
- prescription
- retracted
- automatically
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Abstract
The invention discloses a disposable safe syringe with an automatically-retracted and replaceable needle, and relates to the technical field of medical instruments. The disposable safe syringe comprises a needle cylinder (1) and a push rod (2), and also comprises a dosing needle (3) and an injection needle (4); and the dosing needle (3) or the injection needle (4) can be replaced according to use requirement, so the needle cannot be deformed and the finish and sharpness of the needle are not influenced due to injection, and further the adverse effect on a human body cannot be generated. During clinical use, the traditional operating habits are not basically changed, the syringe has the advantages of convenient use and reliable function, the injection needle after the injection can be retracted and hidden through an automatic retract mechanism, the medical staff and the patient are ensured not to be accidentally injured by the polluted needle point, the syringe used cannot be repeatedly used, the disposable use of the syringe in the true sense is realized, and the transmission of blood borne diseases is avoided. Due to the reasonable structural design, the disposable safe syringe is suitable for automatic assembly in production lines, and has the advantages of good quality and high qualification rate.
Description
Technical field
The present invention relates to technical field of medical instruments, relate in particular to a kind of disposible safety syringe of automatically-retracted and replaceable needle.
Background technology
Liquid medicine injection uses disposable sterilized injector when undergoing preventive vaccination clinically, to controlling iatrogenic infectious disease, preventing that cross infection etc. from having played positive role.But existing various disposable syringes---disposable syringe that comprises forms such as type self-destroyed, manual retracting type, automatic retracting type---lack some required functions owing to design and structure is perfect not to the utmost, can not satisfy the needs on using fully.For example; When using dry powder injection preparating liquid, after in the medicine powder container of sealing, annotating solution, syringe needle is unavoidably produced fineness and the sharpness that distortion reaches syringe needle exert an influence; From the strict sense; Puncture bottle stopper, the exhausted entry needle of preparating liquid can not be used further to the human injection, and (in fact existing at present many hospitals have caused waste in such operation more and can only again use a disposable syringe.), and, there are some countries that this Compulsory Feature has on the one hand been arranged.And the safety injector that existing disposable syringe, especially syringe needle can bounce back automatically, the general function of all not changing syringe needle.
Summary of the invention
The deficiency of the safety injector that can bounce back automatically to above-mentioned disposable syringe and syringe needle the objective of the invention is to, and proposes a kind of disposible safety syringe of novel automatically-retracted and replaceable needle.
The objective of the invention is to adopt following technical solution to realize:
A kind of disposible safety syringe of automatically-retracted and replaceable needle comprises syringe and push rod, and said push rod inserts the syringe inner chamber, it is characterized in that, also comprises make up a prescription syringe needle and injection needle;
Said push rod inserts syringe inner chamber one end and is cylindric opening, and its opening is provided with the edge of a knife, and plug one top plug in the opening aperture;
The said syringe needle that makes up a prescription comprises the make up a prescription needle tubing and the needle stand that makes up a prescription, and the needle tubing that makes up a prescription is fixed on the needle stand that makes up a prescription;
Said injection needle comprises injection needle, injecting needle base, needle stand cover, stage clip and stage clip medicated cap, and said injecting needle base rear end is through one-piece sheet and reinforcement clutch disk, and said injection needle is fixed on the injecting needle base front end; Said needle stand cover is a hollow cylinder; Its intracavity posterior end is provided with ring support, and said injecting needle base places needle stand cover inner chamber, and said stage clip medicated cap is fixedly installed on needle stand cover front end; And compress said injecting needle base front end; Also be provided with a stage clip between said stage clip medicated cap and the injecting needle base, the effect of said injecting needle base pressurized spring force is replaced said disk and ring support and is connected airtight;
Said syringe needle or the injection needle of making up a prescription all can spin with the syringe fixing seal respectively.
The disposible safety syringe of above-mentioned a kind of automatically-retracted and replaceable needle is characterized in that, said making up a prescription is provided with sealing ring between syringe needle or injection needle and the syringe.
The disposible safety syringe of above-mentioned a kind of automatically-retracted and replaceable needle; It is characterized in that; Said syringe is provided with conical bore by the other end that push rod inserts, and said needle stand and the entry needle cover for seat of making up a prescription is respectively equipped with the frustum of a cone, and their frustum of a cone is resisted against respectively and is sealing state in the conical bore.
The disposible safety syringe of above-mentioned a kind of automatically-retracted and replaceable needle is characterized in that, the tapering of the conical bore of said syringe is more than or equal to the tapering of the frustum of a cone of make up a prescription needle stand and entry needle cover for seat.
The disposible safety syringe of above-mentioned a kind of automatically-retracted and replaceable needle is characterized in that, the said needle stand that makes up a prescription be provided with the butterfly wing or/and corner angle or/and the surface is provided with the annular knurl stricture of vagina.
The disposible safety syringe of above-mentioned a kind of automatically-retracted and replaceable needle is characterized in that, also comprises the injection needle sheath, and said entry needle sheath and needle stand cover are respectively equipped with corresponding internal spline and outer teeth groove, and said entry needle sheath is enclosed within needle stand and puts.
The disposible safety syringe of above-mentioned a kind of automatically-retracted and replaceable needle is characterized in that, said entry needle sheath outer rim also be provided with the butterfly wing or/and corner angle or/and the surface is provided with the annular knurl stricture of vagina.
The disposible safety syringe of above-mentioned a kind of automatically-retracted and replaceable needle is characterized in that, the inner edge of said syringe is provided with interior ratchet, and said needle stand cover is provided with corresponding outer ratchet.
The disposible safety syringe of above-mentioned a kind of automatically-retracted and replaceable needle is characterized in that, the dispensing needle pipe of the said syringe needle that makes up a prescription is processed the angular cut needle point, or needle point is processed the structure that epiconus combines side opening.
The disposible safety syringe of above-mentioned a kind of automatically-retracted and replaceable needle is characterized in that, said syringe, push rod, the needle stand that makes up a prescription, injecting needle base, needle stand cover, stage clip medicated cap adopt plastic material.
The disposible safety syringe of above-mentioned a kind of automatically-retracted and replaceable needle is characterized in that, the said syringe needle that makes up a prescription is processed with the molding of medical grade non-toxic plastic integral molded plastic.
The disposible safety syringe of above-mentioned a kind of automatically-retracted and replaceable needle is characterized in that, institute's syringe adopts transparent plastic material;
The present invention can change injection needle according to the needs that use, and the reason preparating liquid does not make injection needle produce distortion and influenced fineness and sharpness, and the human injection is produced harmful effect.Basically do not change traditional operating habit during the clinical use of the present invention; Easy-to-use, reliable effect, entry needle still can bounce back automatically through automatic cam mechanism and hide when injection was accomplished; Guarantee that hospitalized patients exempts from the unexpected injury of contaminated needle point; And can't reuse exhausted syringe and inject, realize syringe disposable use truly, avoid the propagation of blood borne disease.Because reasonable in design of the present invention, very being suitable for production line assembles production automatically, and quality is good, qualification rate is high.The object of the invention, advantage and characteristics will be done to explain that further these embodiment only provide as an example through the non-limitative illustration of following accompanying drawing and embodiment.
Description of drawings
Fig. 1 is the sketch map of the present invention that band wing injection needle is housed;
Fig. 2 is equipped with the make up a prescription sketch map of the present invention of syringe needle of the band wing;
Injection needle retracted state sketch map after Fig. 3 accomplishes for the present invention injects;
Fig. 4 is band wing injection needle enlarged diagram;
Fig. 5 is the band wing syringe needle enlarged diagram that makes up a prescription;
Fig. 6 is band rib injection needle and band rib sheath enlarged diagram;
Fig. 7 is band rib make up a prescription syringe needle and band rib sheath sketch map;
Fig. 8 is syringe and the injection needle and the partly enlarged diagram of syringe needle fit structure that makes up a prescription;
Fig. 9 is a stopping device structure enlarged diagram;
In the above accompanying drawing: the 1-syringe; The 1a-conical bore; Ratchet in the 1b-; The 1c-female thread; The 2-push rod; 2a-pushes up plug; The 2b-cavity; The 2c-edge of a knife; The 2d-power-assisted pushes away; The 3-syringe needle that makes up a prescription; The 3a-needle tubing that makes up a prescription; The 3a1-epiconus; The 3a2-side opening; The 3b-needle stand that makes up a prescription; The 3b1-frustum of a cone; The 3b2-needle stand butterfly wing that makes up a prescription; The 3b3-external screw thread; The 3b4-corner angle; 3c-dispensing needle sheath; The 4-injection needle; The 4a-injection needle; The 4b-injecting needle base; The 4b1-one-piece sheet; The 4b2-disk; 4c-needle stand cover; The 4c1-ring support, the outer teeth groove of 4c2-; The 4c3-frustum of a cone; The outer ratchet of 4c4-; The 4c5-external screw thread; The 4d-stage clip; 4e-stage clip medicated cap; 4f-entry needle headband is shielded with one's own body cover; The 4f1-internal spline; The 4f2-butterfly wing; The 4f3-corner angle; 5-injecting needle base sheath; The 5a-female thread.
The specific embodiment
Embodiment 1:
The disposible safety syringe of a kind of automatically-retracted and replaceable needle of the present invention such as Fig. 1～shown in Figure 5, comprise syringe 1 and push rod 2, said push rod 2 inserts syringe 1 inner chamber, it is characterized in that, also comprises make up a prescription syringe needle 3 and injection needle 4.The said syringe needle 3 that makes up a prescription comprises make up a prescription the needle tubing 3a and the needle stand 3b that makes up a prescription, and the needle tubing 3a that makes up a prescription is fixed on the needle stand 3b that makes up a prescription.The said injection needle 4 of
has can hit (touching) device and function from moving retraction, and its member comprises injection needle 4a, injecting needle base 4b, needle stand cover 4c, stage clip 4d and stage clip medicated cap 4e.Said injecting needle base 4b rear end is fixedly connected disk 4b2 through one-piece sheet 4b1, and said injection needle 4a is fixed on injecting needle base 4b front end.Said needle stand cover 4c is a hollow cylinder, and its intracavity posterior end is provided with ring support 4c1.Said injecting needle base 4b places needle stand cover 4c hollow cavity.Front end at said needle stand cover 4c; Through clamping, spin or other modes, be set with a stage clip medicated cap 4e, and compress said injecting needle base 4b front end; Said injection needle 4a then stretches out stage clip medicated cap 4e aperture, also is provided with a stage clip 4d between said stage clip medicated cap 4e and the injecting needle base 4b.The effect of said injecting needle base 4b pressurized spring force, its rear end disk 4b2 connects airtight (sealing) with replacing with ring support 4c1.Between said disk 4b2 and ring support 4c 1, also can fix an O RunddichtringO.Said syringe 1 cooperates part to be provided with female thread 1c with the injection needle 4 and the syringe needle 3 that makes up a prescription, and the said syringe needle 3 that makes up a prescription is respectively equipped with external screw thread 3b3 and 4c5 with injection needle 4.In practical application,, can easily said syringe needle 3 or the injection needle 4 of making up a prescription fixedly be spun with syringe 1 respectively through helicitic texture according to the use needs.Owing to be provided with the circular hole or the conical bore 1a of aperture convergent at the front end of syringe 1; Needle stand 3b and entry needle cover for seat 4c rear end are respectively round platform or all are provided with frustum of a cone 3b1,4c3 making up a prescription; Make up a prescription syringe needle 3 or injection needle 4 when fixedly spinning with syringe 1 respectively; Their round platform or frustum of a cone 3b1,4c3 position are resisted against respectively in the conical bore 1a, implement sealing.If conical bore 1a and frustum of a cone 3b1 or 4c3 are different tapers, then the tapering of conical bore 1a is greater than the tapering of frustum of a cone 3b1 or 4c3, and is comparatively favourable to their cooperation and sealing.If conical bore 1a is made as identical tapering with frustum of a cone 3b1 or 4c3, the contact surface between them is big, good sealing effect.Also can between them, install the sealing ring (not shown) additional, make sealing function better.When using injection needle 4 to carry out the human injection, push rod 2 is injected the medicinal liquid in the syringe 1 when promptly closely finishing, and continues pushing push rod 2; Injecting needle base 4b is limited by stage clip medicated cap 4e and compresses, and then the plug of the top in push rod 2 opening endoporus 2a is passed in the cavity 2b of push rod 2 by propulsive thrust, and the edge of a knife 2c of push rod 2 front ends stabs the one-piece sheet 4b1 that cuts injecting needle base 4b; Make it to rupture fully, injecting needle base 4b thoroughly separates with its disk 4b2, makes the stage clip 4d of compression rely on diastole because of injecting needle base 4b loses; Under stage clip 4d relaxes tensile effect; Injecting needle base 4b and injection needle 4a speed away the human injection position and automatic retraction falls into push rod 2 cavity 2b.
Present embodiment is similar basically with embodiment 1, and difference is that syringe of the present invention also comprises dispensing needle sheath 3c, and kink is on the needle stand 3b that making up a prescription, and needle tubing 3a shields to making up a prescription; The needle stand 3b that makes up a prescription is provided with butterfly wing 3b2 or corner angle 3b4 or surface knurling, and said butterfly wing 3b2 or corner angle 3b4 are distributed on the needle stand 3b periphery of making up a prescription, and is convenient to grip and spin; The needle tubing 3a that makes up a prescription of the said syringe needle 3 that makes up a prescription processes the angular cut needle point, or needle point is processed epiconus 3a1 and had the structure of side opening 3a2.
Present embodiment is similar basically, as shown in Figure 4 with embodiment 1, and difference is that syringe of the present invention also comprises entry needle sheath 4f, and kink is protected injection needle 4a at the needle stand cover 4c of injection needle 4 front end.Entry needle sheath 4f inner edge and needle stand cover 4c outer rim be respectively equipped with corresponding internal spline 4f1 with outside teeth groove 4c2; When entry needle sheath 4f and needle stand cover 4c socket-connect; Their internal spline 4f1 and outer teeth groove 4c2 interlaced (inserting), entry needle sheath 4f outer rim also is provided with butterfly wing 4f2 or corner angle 3b4 or surface knurling, in needle stand cover 4c outer rim surface knurling is arranged also; Said butterfly wing 4f2 or corner angle 4f3 are distributed on entry needle sheath 4f periphery, are convenient to the installation that spins of injection needle 4.Injection needle 4 do not spin be installed on the syringe 1 before, in needle stand cover 4c rear end, perhaps needle stand cover sheath 5 inner edges are provided with female thread 5a with needle stand cover sheath 5 kinks, needle stand cover sheath 5 rotation sets are protected on needle stand cover 4c.
Present embodiment is similar basically with embodiment 3, and like Fig. 4, Fig. 6, Fig. 8 and shown in Figure 9, difference is; The present invention also comprises the injection needle stopping device: ratchet 1b in the inner edge of syringe 1 is provided with; And injecting needle base 4b is provided with corresponding outer ratchet 4c4, when injection needle 4 screws in syringes 1, because the effect of interior ratchet 1b and outer ratchet 4c4; Injection needle 4 can only unidirectional precession, and can't oppositely screw out.Injection needle stopping device of the present invention can prevent to inject and use discarded syringe later, is used again after being disassembled.
The foregoing description as the example of explanation, is not the qualification that the present invention is done only, and the present invention can also adopt other modes, step to implement, and does not give unnecessary details one by one at this.In every case adopt the technical scheme that is equal to replacement or equivalent transformation formation, all belong to the protection domain of requirement of the present invention.
Claims (12)
1. the disposible safety syringe of an automatically-retracted and replaceable needle comprises syringe (1) and push rod (2), and said push rod (2) inserts syringe (1) inner chamber, it is characterized in that, also comprises syringe needle that makes up a prescription (3) and injection needle (4);
The opening of said push rod (2) is provided with the edge of a knife (2c), and aperture plug one top plug (2a);
The said syringe needle that makes up a prescription (3) comprises needle tubing that makes up a prescription (3a) and the needle stand that makes up a prescription (3b), and the needle tubing that makes up a prescription (3a) is fixed on the needle stand that makes up a prescription (3b);
Said injection needle (4) comprises injection needle (4a), injecting needle base (4b), needle stand cover (4c), stage clip (4d) and stage clip medicated cap (4e); Said injecting needle base (4b) rear end is through one-piece sheet (4b1) clutch disk (4b2); Said injection needle (4a) is fixed on injecting needle base (4b) front end, and said needle stand cover (4c) is a hollow cylinder, and its intracavity posterior end is provided with ring support (4c1); Said injecting needle base (4b) places needle stand cover (4c) inner chamber; Said stage clip medicated cap (4e) is fixedly installed on needle stand cover (4c) front end, and compresses said injecting needle base (4b) front end, also is provided with a stage clip (4d) between said stage clip medicated cap (4e) and the injecting needle base (4b); Said injecting needle base (4b) receives the effect of stage clip (4d) elastic force, said disk (4b2) and ring support (4c1) is replaced connected airtight;
Said syringe needle that makes up a prescription (3) or injection needle (4) spin with syringe (1) fixing seal.
2. according to the disposible safety syringe of the said a kind of automatically-retracted and replaceable needle of claim 1, it is characterized in that, be provided with sealing ring between said syringe needle that makes up a prescription (3) or injection needle (4) and the syringe (1).
3. according to the disposible safety syringe of the said a kind of automatically-retracted and replaceable needle of claim 1; It is characterized in that; Said syringe (1) is provided with conical bore (1a); Said needle stand that makes up a prescription (3b) and needle stand cover (4c) are respectively equipped with the frustum of a cone (3b1,4c3), and their frustum of a cone (3b1,4c3) is resisted against respectively in the conical bore (1a).
4. according to the disposible safety syringe of the said a kind of automatically-retracted and replaceable needle of claim 1; It is characterized in that the tapering of the conical bore (1a) of said syringe (1) is more than or equal to the tapering of the frustum of a cone (3b1,4c3) of needle stand that makes up a prescription (3b) and needle stand cover (4c).
5. according to the disposible safety syringe of the said a kind of automatically-retracted and replaceable needle of claim 1, it is characterized in that, the said needle stand that makes up a prescription (3b) be provided with the butterfly wing (3b2) or/and corner angle (3b4) or/and the surface is provided with the annular knurl stricture of vagina.
6. according to the disposible safety syringe of the said a kind of automatically-retracted and replaceable needle of claim 1; It is characterized in that; Also comprise entry needle sheath (4f); Said entry needle sheath (4f) and needle stand cover (4c) are respectively equipped with corresponding internal spline (4f1) and outer teeth groove (4c2), and said entry needle sheath (4f) is enclosed within on the needle stand cover (4c).
7. according to the disposible safety syringe of the said a kind of automatically-retracted and replaceable needle of claim 6, it is characterized in that, said entry needle sheath (4f) outer rim also be provided with the butterfly wing (4f2) or/and corner angle (4f3) or/and the surface is provided with the annular knurl stricture of vagina.
8. according to the disposible safety syringe of the said a kind of automatically-retracted and replaceable needle of claim 1, it is characterized in that the inner edge of said syringe (1) is provided with interior ratchet (1b), said needle stand cover (4c) is provided with corresponding outer ratchet (4c4).
9. according to the disposible safety syringe of the said a kind of automatically-retracted and replaceable needle of claim 1; It is characterized in that; The needle tubing that makes up a prescription (3a) of the said syringe needle that makes up a prescription (3) is processed the angular cut needle point, or needle point is processed the structure that epiconus (3a1) combines side opening (3a2).
10. according to the disposible safety syringe of the said a kind of automatically-retracted and replaceable needle of claim 1; It is characterized in that; Said syringe (1), push rod (2), the needle stand that makes up a prescription (3b), injecting needle base (4b), needle stand cover (4c), stage clip medicated cap (4e) adopt plastic material.
11. the disposible safety syringe according to the said a kind of automatically-retracted and replaceable needle of claim 1 is characterized in that, the said syringe needle that makes up a prescription (3) is processed with the molding of medical grade non-toxic plastic integral molded plastic.
12. the disposible safety syringe according to the said a kind of automatically-retracted and replaceable needle of claim 10 is characterized in that, said syringe (1) adopts transparent plastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910163454XA CN101856526B (en) | 2009-08-15 | 2009-08-15 | Disposable safe syringe with automatically-retracted and replaceable needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910163454XA CN101856526B (en) | 2009-08-15 | 2009-08-15 | Disposable safe syringe with automatically-retracted and replaceable needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101856526A CN101856526A (en) | 2010-10-13 |
| CN101856526B true CN101856526B (en) | 2012-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910163454XA Expired - Fee Related CN101856526B (en) | 2009-08-15 | 2009-08-15 | Disposable safe syringe with automatically-retracted and replaceable needle |
Country Status (1)
| Country | Link |
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| CN (1) | CN101856526B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105169529A (en) * | 2015-08-10 | 2015-12-23 | 苏州灵岩医疗科技股份有限公司 | Self-destructive injector |
| CN105709309A (en) * | 2016-01-06 | 2016-06-29 | 徐昊华 | Intelligent safe injection syringe |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2880122Y (en) * | 2006-01-26 | 2007-03-21 | 上海麦得可医疗器械销售有限公司 | Safety self-distruction type injuctor capable of changing needle |
| CN101094704A (en) * | 2004-11-04 | 2007-12-26 | 麦迪塞弗环球控股有限公司 | Exchange needle retractable safety syringe |
| CN201098441Y (en) * | 2007-06-18 | 2008-08-13 | 黄灵扬 | Safety self-breaking injector capable of exchanging steel needle seat |
| CN201481935U (en) * | 2009-08-15 | 2010-05-26 | 徐昊华 | Disposable safety injection syringe with automatic retractable and replaceable needle head |
-
2009
- 2009-08-15 CN CN200910163454XA patent/CN101856526B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101094704A (en) * | 2004-11-04 | 2007-12-26 | 麦迪塞弗环球控股有限公司 | Exchange needle retractable safety syringe |
| CN2880122Y (en) * | 2006-01-26 | 2007-03-21 | 上海麦得可医疗器械销售有限公司 | Safety self-distruction type injuctor capable of changing needle |
| CN201098441Y (en) * | 2007-06-18 | 2008-08-13 | 黄灵扬 | Safety self-breaking injector capable of exchanging steel needle seat |
| CN201481935U (en) * | 2009-08-15 | 2010-05-26 | 徐昊华 | Disposable safety injection syringe with automatic retractable and replaceable needle head |
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| Publication number | Publication date |
|---|---|
| CN101856526A (en) | 2010-10-13 |
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