CN201481922U - Disposable safety injection syringe with replaceable and automatic retractable needle head - Google Patents
Disposable safety injection syringe with replaceable and automatic retractable needle head Download PDFInfo
- Publication number
- CN201481922U CN201481922U CN2009201616636U CN200920161663U CN201481922U CN 201481922 U CN201481922 U CN 201481922U CN 2009201616636 U CN2009201616636 U CN 2009201616636U CN 200920161663 U CN200920161663 U CN 200920161663U CN 201481922 U CN201481922 U CN 201481922U
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- Prior art keywords
- needle
- syringe
- prescription
- bounce back
- injection
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Abstract
The utility model provides a disposable safety injection syringe with a replaceable and automatic retractable needle head, which belongs to the technical field of medical instruments. The disposable safety injection syringe comprises a syringe (1), a push rod (2), a dispensing needle head (3) and a syringe needle (4), wherein the dispensing needle head (3) or the syringe needle (4) can be replaced according to the use requirements, so that adverse effects on human body caused by deformed, unclean and unsharp needle head because of the injection liquid can be avoided. Traditional operation methods are basically unchanged when the disposable safety injection syringe is clinically used, the use is convenient, and the effect is reliable; after injection, the needle head can be retracted and hidden through an automatic retracting mechanism so as to prevent doctors and patients from being accidentally injured by the polluted needle point, and the injection syringe after use cannot be repeated for injection, so that the disposability of the injection syringe is achieved in the true sense, and the spread of hematogenous diseases is avoided. Thanks to the reasonable structural design, the disposable safety injection syringe is quite suitable for automatic assembly in production line, and has good quality and high qualification rate.
Description
Technical field
The present invention relates to technical field of medical instruments, relate in particular to the disposible safety syringe that a kind of syringe needle is interchangeable and can bounce back automatically.
Background technology
At present, use disposable sterilized safety injector at liquid medicine injection with when undergoing preventive vaccination, to controlling iatrogenic infectious disease, preventing that cross infection etc. from having played positive role.But the prior art disposable syringe---comprises form disposable syringes such as type self-destroyed, manual retracting type, automatic retracting type---because the imperfection of design and structure lacks some required functions, 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 distortion and the fineness and the sharpness of syringe needle exerted 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 can only again use a disposable syringe more, and, there are some countries that this Compulsory Feature has on the one hand been arranged.And the safety injector that prior art 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 at above-mentioned disposable syringe and syringe needle the objective of the invention is to, and proposes the disposible safety syringe that a kind of novel syringe needle is interchangeable and can bounce back automatically.
The objective of the invention is to adopt following technical solution to realize:
Interchangeable and the disposible safety syringe that can bounce back automatically of a kind of syringe needle comprises syringe and push rod, and described push rod inserts the syringe inner chamber, it is characterized in that, also comprises make up a prescription syringe needle and injection needle;
The opening endoporus of described push rod is provided with a top plug;
The described 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;
Described injection needle comprises injection needle, injecting needle base, needle stand cover, stage clip and stage clip medicated cap, described injection needle is fixed on the injecting needle base front end, described needle stand cover is a hollow cylinder, its intracavity posterior end is provided with flange, and fixes an O RunddichtringO, and described injecting needle base places needle stand cover inner chamber, described stage clip medicated cap is fixedly installed on needle stand cover front end, be provided with a stage clip between described stage clip end cap and the injecting needle base, the pressurized spring force effect of described injecting needle base rear end is replaced with the O RunddichtringO and to be joined;
Described syringe needle or the injection needle of making up a prescription all can spin with the syringe fixing seal respectively.
Interchangeable and the disposible safety syringe that can bounce back automatically of above-mentioned a kind of syringe needle is characterized in that described making up a prescription is provided with sealing ring between syringe needle or injection needle and the syringe.
Interchangeable and the disposible safety syringe that can bounce back automatically of above-mentioned a kind of syringe needle, it is characterized in that, described syringe is provided with conical bore by the other end that push rod inserts, and described 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.
Interchangeable and the disposible safety syringe that can bounce back automatically of above-mentioned a kind of syringe needle is characterized in that the tapering of the conical bore of described 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.
Interchangeable and the disposible safety syringe that can bounce back automatically of above-mentioned a kind of syringe needle is characterized in that, the described needle stand periphery of making up a prescription be provided with the butterfly wing or/and the corner angle bar or/and the surface is provided with the annular knurl stricture of vagina.
Interchangeable and the disposible safety syringe that can bounce back automatically of above-mentioned a kind of syringe needle is characterized in that, also comprises the injection needle sheath, and described entry needle sheath and needle stand cover are respectively equipped with corresponding internal spline and outer teeth groove, and described entry needle sheath is enclosed within needle stand and puts.
Interchangeable and the disposible safety syringe that can bounce back automatically of above-mentioned a kind of syringe needle is characterized in that, described entry needle sheath outer rim also be provided with the butterfly wing or/and the corner angle bar or/and the surface is provided with the annular knurl stricture of vagina.
Interchangeable and the disposible safety syringe that can bounce back automatically of above-mentioned a kind of syringe needle is characterized in that the inner edge of described syringe is provided with interior ratchet, and described needle stand cover is provided with corresponding outer ratchet.
Interchangeable and the disposible safety syringe that can bounce back automatically of above-mentioned a kind of syringe needle is characterized in that the dispensing needle pipe of the described syringe needle that makes up a prescription is made the angular cut needle point, or needle point is made the structure of epiconus in conjunction with side opening.
Interchangeable and the disposible safety syringe that can bounce back automatically of above-mentioned a kind of syringe needle is characterized in that, described syringe, push rod, the needle stand that makes up a prescription, injecting needle base, needle stand cover, stage clip medicated cap adopt plastic material.
Interchangeable and the disposible safety syringe that can bounce back automatically of above-mentioned a kind of syringe needle is characterized in that the described syringe needle that makes up a prescription is made with the molding of medical grade non-toxic plastic integral molded plastic.
Interchangeable and the disposible safety syringe that can bounce back automatically of above-mentioned a kind of syringe 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.When using, the present invention do not change traditional operating habit substantially, easy-to-use, reliable effect, entry needle still can bounce back automatically by automatic cam mechanism and hide when injection was finished, 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.
Purpose of the present invention, advantage and characteristics will be further explained by the non-limitative illustration of following drawings and Examples, and these embodiment only provide as an example.
Description of drawings
Fig. 1 is equipped with the make up a prescription sketch map of the present invention of syringe needle of the band butterfly wing;
Fig. 2 is equipped with the make up a prescription sketch map of the present invention of syringe needle of band corner angle bar;
Fig. 3 is the sketch map of the present invention that injection needle is housed;
Injection needle retracted state sketch map after Fig. 4 finishes for the present invention injects;
Fig. 5 is injection needle assembling enlarged diagram;
Fig. 6 is the syringe needle enlarged diagram that makes up a prescription;
Fig. 7 is the injection needle assembling enlarged diagram that has the corner angle bar;
Fig. 8 is the syringe needle enlarged diagram that makes up a prescription that has the corner angle bar;
Fig. 9 is the syringe sealed structural representation;
Figure 10 is an injection needle stopping device structural representation;
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 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-butterfly wing; The 3b3-external screw thread; 3b4-corner angle bar; 3c-dispensing needle sheath; The 4-injection needle; The 4a-injection needle; The 4b-injecting needle base; 4c-needle stand cover; The 4c1-flange, 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; The 4f-O RunddichtringO; 4g-entry needle sheath; The 4g1-internal spline; The 4g2-butterfly wing; 4g3-corner angle bar; 5-injecting needle base sheath; The 5a-female thread.
The specific embodiment
Embodiment 1:
The automatic retraction safety syringe of a kind of exchangeable needle of the present invention such as Fig. 1～shown in Figure 6, comprise syringe 1 and push rod 2, described push rod inserts syringe 1 inner chamber, it is characterized in that, also comprises make up a prescription syringe needle 3 and injection needle 4.Described dispensing needle 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 needle tubing 3a that makes up a prescription of the described syringe needle 3 that makes up a prescription also can adopt the molding of medical grade non-toxic plastic integral molded plastic with the needle stand 3b that makes up a prescription.Described injection needle 4 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.Described injection needle 4a is fixed on injecting needle base 4b front end.Described needle stand cover 4c is a hollow cylinder, and is provided with flange 4c1 in the rear end of inwall.Flange 4c1 place at described needle stand cover 4c inwall fixes an O RunddichtringO 4f.Described injecting needle base 4b places needle stand cover 4c hollow cavity.At the front end of described needle stand cover 4c, by clamping, spin or other modes, be set with a stage clip medicated cap 4e, described injection needle 4a stretches out stage clip medicated cap 4e, is provided with a stage clip 4d between described stage clip medicated cap 4e and the injecting needle base 4b.The effect of described injecting needle base 4b pressurized spring force, its rear end is replaced mutually with O RunddichtringO 4f, makes injecting needle base 4b and needle stand cover 4c, fixes and seals by the O RunddichtringO 4f that is provided with between them.Described syringe 1 is provided with female thread 1c, and described syringe needle 3 and the injection needle 4 of making up a prescription is respectively equipped with external screw thread 3b3 and 4c5.In actual applications, according to using needs, can easily described syringe needle 3 or the injection needle 4 of making up a prescription fixedly be spun with syringe 1 respectively by helicitic texture.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 2 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 is different taperings with frustum of a cone 3b1 or 4c3, 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 sealing ring again 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 finishing, top plug 2a in the push rod 2 opening endoporus is passed in the cavity 2b of push rod 2 by propulsive thrust, lose the push rod 2 front end exposed portion of top plug 2a, insert the position, gap of injecting needle base 4b and needle stand cover 4c, promote O RunddichtringO 4f, enter the cavity between injecting needle base 4b and the needle stand cover 4c, make the stage clip 4d of compression lose the sealing fixing diastole of O RunddichtringO 4f because of injecting needle base 4b, 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.
Embodiment 2:
Present embodiment is similar substantially to 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 bar (or claiming convex ridge) 3b4 or surface knurling, is convenient to grip and spin; The needle tubing 3a that makes up a prescription of the described syringe needle 3 that makes up a prescription makes the angular cut needle point, or needle point is made epiconus 3a1 and have the structure of side opening 3a2.
Present embodiment is similar substantially to embodiment 1, and as shown in Figure 4, difference is that syringe of the present invention also comprises entry needle sheath 4g, and kink is protected injection needle 4a at the needle stand cover 4c of injection needle 4 front end.Entry needle sheath 4g inner edge and needle stand cover 4c outer rim be respectively equipped with corresponding internal spline 4g1 and outside teeth groove 4c2, when entry needle sheath 4g and needle stand cover 4c socket-connect, their internal spline 4g1 and outer teeth groove 4c2 interlaced (inserting), entry needle sheath 4g outer rim also is provided with butterfly wing 4g2 or corner angle bar 3b4 or surface knurling, is convenient to the installation that spins of injection needle 4.Injection needle 4 do not spin be installed on the dress 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 substantially to embodiment 3, as Fig. 4 and shown in Figure 7, 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 is as an illustration example only, is not the qualification that the present invention is done, 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 interchangeable and disposible safety syringe that can bounce back automatically of a syringe needle comprises syringe (1) and push rod (2), and described 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 endoporus of described push rod (2) is provided with a top plug (2a);
The described 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);
Described injection needle (4) comprises injection needle (4a), injecting needle base (4b), needle stand cover (4c), stage clip (4d) and stage clip medicated cap (4e), described injection needle (4a) is fixed on injecting needle base (4b) front end, described needle stand cover (4c) is a hollow cylinder, its intracavity posterior end is provided with flange (4c1), and fix an O RunddichtringO (4f), described injecting needle base (4b) places needle stand cover (4c) inner chamber, described stage clip medicated cap (4e) is fixedly installed on needle stand cover (4c) front end, be provided with a stage clip (4d) between described stage clip medicated cap (4e) and the injecting needle base (4b), described injecting needle base (4b) is subjected to the effect of stage clip (4d) elastic force, replaces with O RunddichtringO (4f) and joins;
Described syringe needle that makes up a prescription (3) or injection needle (4) spin with syringe (1) fixing seal.
2. interchangeable according to the described a kind of syringe needle of claim 1 and can bounce back automatically disposible safety syringe is characterized in that, is provided with sealing ring between described syringe needle that makes up a prescription (3) or injection needle (4) and the syringe (1).
3. interchangeable according to the described a kind of syringe needle of claim 1 and can bounce back automatically disposible safety syringe, it is characterized in that, described syringe (1) is provided with conical bore (1a), described needle stand that makes up a prescription (3b) and injecting needle base (4b) are respectively equipped with the frustum of a cone (3b1 and 4c3), and their frustum of a cone (3b1 and 4c3) is resisted against respectively in the conical bore (1a).
4. interchangeable according to the described a kind of syringe needle of claim 1 and can bounce back automatically disposible safety syringe, it is characterized in that the tapering of the conical bore (1a) of described syringe (1) is more than or equal to the tapering of the frustum of a cone (3b1 and 4c3) of needle stand that makes up a prescription (3b) and entry needle cover for seat (4c).
5. interchangeable according to the described a kind of syringe needle of claim 1 and can bounce back automatically disposible safety syringe is characterized in that, the described needle stand that makes up a prescription (3b) be provided with the butterfly wing (3b2) or/and corner angle bar (3b4) or/and the surface is provided with the annular knurl stricture of vagina.
6. interchangeable according to the described a kind of syringe needle of claim 1 and can bounce back automatically disposible safety syringe, it is characterized in that, also comprise entry needle sheath (4g), described entry needle sheath (4g) and needle stand cover (4c) are respectively equipped with corresponding internal spline (4g1) and outer teeth groove (4c2), and described entry needle sheath (4g) is enclosed within on the needle stand cover (4c).
7. interchangeable according to the described a kind of syringe needle of claim 6 and can bounce back automatically disposible safety syringe is characterized in that, described entry needle sheath (4g) outer rim also be provided with the butterfly wing (4g2) or/and corner angle bar (4g3) or/and the surface is provided with the annular knurl stricture of vagina.
8. interchangeable according to the described a kind of syringe needle of claim 1 and can bounce back automatically disposible safety syringe is characterized in that the inner edge of described syringe (1) is provided with interior ratchet (1b), and described needle stand cover (4c) is provided with corresponding outer ratchet (4c4).
9. interchangeable according to the described a kind of syringe needle of claim 1 and can bounce back automatically disposible safety syringe, it is characterized in that, the needle tubing that makes up a prescription (3a) of the described syringe needle that makes up a prescription (3) is made the angular cut needle point, or needle point is made the structure of epiconus (3a1) in conjunction with side opening (3a2).
10. interchangeable according to the described a kind of syringe needle of claim 1 and can bounce back automatically disposible safety syringe, it is characterized in that, described 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. interchangeable according to the described a kind of syringe needle of claim 1 and can bounce back automatically disposible safety syringe is characterized in that, the described syringe needle that makes up a prescription (3) is made with the molding of medical grade non-toxic plastic integral molded plastic.
12. interchangeable according to the described a kind of syringe needle of claim 10 and can bounce back automatically disposible safety syringe is characterized in that, described syringe (1) adopts transparent plastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201616636U CN201481922U (en) | 2009-07-15 | 2009-07-15 | Disposable safety injection syringe with replaceable and automatic retractable needle head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201616636U CN201481922U (en) | 2009-07-15 | 2009-07-15 | Disposable safety injection syringe with replaceable and automatic retractable needle head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201481922U true CN201481922U (en) | 2010-05-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201616636U Expired - Lifetime CN201481922U (en) | 2009-07-15 | 2009-07-15 | Disposable safety injection syringe with replaceable and automatic retractable needle head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201481922U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011006350A1 (en) * | 2009-07-15 | 2011-01-20 | 无锡市宇寿医疗器械有限公司 | Safe disposable injector with changeable and automatically retractable needle |
-
2009
- 2009-07-15 CN CN2009201616636U patent/CN201481922U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011006350A1 (en) * | 2009-07-15 | 2011-01-20 | 无锡市宇寿医疗器械有限公司 | Safe disposable injector with changeable and automatically retractable needle |
| CN101601882B (en) * | 2009-07-15 | 2012-02-01 | 无锡市宇寿医疗器械股份有限公司 | Disposable safety syringe with replaceable and automatically retracted needle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Jiang Wenjun Inventor after: Feng Zhong Inventor before: Jiang Wenjun |
|
| C56 | Change in the name or address of the patentee |
Owner name: WUXI YUSHOU MEDICAL DEVICES CO., LTD. Free format text: FORMER NAME: WUXI YUSHOU MEDICAL APPARATUS CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 214191 No. 215, Tin Road, Northeast Tong Town, Wuxi, Jiangsu Patentee after: Wuxi Yushou Medical Appliances Co., Ltd. Address before: 214191 No. 215, Tin Road, Northeast Tong Town, Wuxi, Jiangsu Patentee before: Wuxi Yushou Medical Apparatus Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 214191 No. 215, Tin Road, Northeast Tong Town, Wuxi, Jiangsu Patentee after: Wuxi Yushou Medical Apparatus Co., Ltd. Address before: 214191 No. 215, Tin Road, Northeast Tong Town, Wuxi, Jiangsu Patentee before: Wuxi Yushou Medical Appliances Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100526 |
|
| CX01 | Expiry of patent term |