CN103285453B - Needle isolation type disposable syringe - Google Patents
Needle isolation type disposable syringe Download PDFInfo
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- CN103285453B CN103285453B CN201310223365.6A CN201310223365A CN103285453B CN 103285453 B CN103285453 B CN 103285453B CN 201310223365 A CN201310223365 A CN 201310223365A CN 103285453 B CN103285453 B CN 103285453B
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- syringe
- inner sleeve
- overcoat
- needle
- entry needle
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Abstract
The invention discloses a needle isolation type disposable syringe which comprises a push rod and a piston, an injection needle cylinder with movable track grooves (hereinafter referred to as the needle cylinder), a needle cylinder inner sleeve with threads (hereinafter referred to as the inner sleeve) and a needle cylinder outer sleeve with a metal protective elastic sheet (hereinafter referred to as the outer sleeve). Before injection, an injection needle is fixed on the inner sleeve and the needle cylinder in a spiral mode, so that the leakage between the needle cylinder and the injection needle is improved, and the injection needle is effectively prevented from being dropped in improved. After the injection, the outer sleeve moves along the moving tracks of 7-shaped grooves in the needle cylinder, namely, the outer sleeve is rotated towards the right relative to the needle cylinder and is pushed toward the front end, and when the injection needle is completely sleeved into the outer sleeve, the metal elastic sheet in a round hole in the front end of the outer sleeve is automatically opened flipped open from an original folding and compressing state to shield the round hole. During the process that the outer sleeve is continuously pushed, the inner sleeve and the injection needle threads connection structure are come off at the same time, the injection needle is sealed between the inner sleeve and the outer sleeve, wherein the inner sleeve and the outer sleeve are separated, and therefore that the purpose that the medical staff are prevented from being punched by needles is achieved.
Description
Art
The present invention relates to a kind of disposable syringe, particularly a kind ofly isolate and be separated the syringe of entry needle.
Background technology
At present, in clinical position, pricking wound is the most common a kind of occupational injury in curative activity, and the skin that needle point punctures medical personnel arrives deep tissue, so that the risk infecting the virus such as hepatitis B, AIDS is undertaken by wounded body.Easily should find in " clinical nurse acupuncture injures the Causes Summary of pricking wound low report phenomenon " literary composition of people such as virtue grade according to volume the 2nd in " Chinese Journal of Nursing " February the 44th in 2009 is interim: domestic year pricking wound 3.5 times per capita, wherein contaminated syringe needle accounts for 60%.In the master thesis of Beijing Union Medical College Nie Shengxiao in 2012, in three grades, Beijing general hospital 1 year there is pricking wound in the nurse of 60.5%, and this research does not also comprise the medical worker outside first nurse.The problem of visible pricking wound is badly in need of solving.The scholars such as Wu Yinghong " Beijing area medical personnels'sharp injuries present situation and countermeasure " to Beijing area 124 two, the descriptive statistics analysis result of medical personnels'sharp injuries kind that reports of tertiary hospitals show that syringe needle stabs the conclusion for causing apparatus kind that sharp instrument injury rate is the highest, its constituent ratio is 33.8%, 1/3rd are accounted in all medical apparatus injuries, its paper was delivered in " Chinese Journal of Nosocomiology " the 22nd volume the 7th phase in 2012, to the importance preventing pricking wound from occurring in visible clinical work, especially to the safety problem of entry needle.
At present, usually the solution for the anti-acupuncture of entry needle designs needle tip, for pin stalk portion, afterbody, and the thinking of entry needle and syringe Integration Design and innovate and few, to such an extent as to the degree-of-difficulty factor of entry needle manufacturing process raising and greatly increase cost.For used disposable syringe, the injection needles of the especially contacted body fluid that is infectious, should carry out completely isolated, and will reach effective, quick, easy object.
Summary of the invention
In order to overcome existing disposable syringe can not completely isolated entry needle to prevent the generation of pricking wound, the invention provides a kind of disposable syringe (syringe), this disposable syringe only need carry out improvement design on syringe cylinder just can reach Secure isolation to entry needle, and more effective, quick, simple and easy.
The technical solution adopted for the present invention to solve the technical problems is: on the injection needles drum outer wall generally used clinically at present, design one group of inside and outside cover.After injection, promote overcoat, entry needle can be inserted in overcoat; Time overcoat continues driven forward, inner sleeve is driven by overcoat, and inner sleeve to prop up bottom entry needle and outwards mobilely makes it be separated syringe; In the process of driven forward, when overcoat front end exceedes injection needle point, the metal monoliths of overcoat front end automatically springs open, and blocks outlet, breaks through to prevent entry needle.Cannot deviate from from inner sleeve front end bottom entry needle.Entry needle is enclosed in wherein by inside and outside cover, reaches Secure isolation entry needle to prevent the effect of pricking wound and body fluid communication risk of infection.The present invention is a kind of disposable syringe (syringe), comprising: push rod and piston, syringe cylinder (hereinafter referred to as syringe) with event trace groove, the threaded syringe inner sleeve (hereinafter referred to as inner sleeve) of inwall tool and have the syringe overcoat (hereinafter referred to as overcoat) of metal coating shell fragment.Before injection, entry needle (general) is fixed on syringe front end in a spiral manner, and entry needle afterbody ledge and inner sleeve inner thread agree with and screw, and adds the sealing between syringe and entry needle and the effect preventing entry needle from coming off; Now entry needle and inner sleeve integral.After injection, along " 7 font " the groove event trace on syringe, namely overcoat promotes overcoat to front end relative to syringe after right rotation, when entry needle is inserted in inside by overcoat completely, metal clips in the circular hole of overcoat front end automatically springs open from the state of original collapsible, to cover circular hole.Continue to promote in the process of overcoat, drive inner sleeve outwards to deviate from, inner sleeve and entry needle are deviate from because spiral fixes simultaneously, and entry needle is closed in isolated inside and outside cover (protection group trap), reaches the object preventing acupuncture.
Wherein, with the syringe cylinder (abbreviation syringe) of event trace groove, it is characterized in that: there is the umbilicate type groove of two relative vertical fold line tracks (" 7 " font) on syringe cylinder surface; For carrying out the Qian He on movement locus with inner sleeve and the inside ledge of overcoat.Perpendicular to the track of syringe in order to fixing inner sleeve and overcoat, make it not easily outwards deviate from, the track being parallel to syringe is then the active path that inner sleeve and overcoat are deviate from.
The threaded syringe inner sleeve of inwall tool (abbreviation inner sleeve), is characterized in that: be between overcoat and syringe, can closely entangle syringe front end; The relative inside ledge in inner sleeve tail end two place is embedded in needle cylinder surface groove, can slide by dog-leg path; Inner sleeve leading portion circular open inwall is helicitic texture, with fixing entry needle in a spiral manner in syringe, adds sealing and the effect preventing from coming off.Now, entry needle and inner sleeve spiral are fixed in an assembly, and entry needle is tightly placed in syringe front end protrusion part and divides.
There is the syringe overcoat (abbreviation overcoat) of metal coating shell fragment, it is characterized in that: Perfect Ring is around inner sleeve and syringe barrel portion, the relative inside ledge in overcoat tail end two place is little square, and is embedded in needle cylinder surface groove, can slide by dog-leg path; Leading portion circular open energy and only can make entry needle parallel through; Have sidewall to have folded metal monolithic in opening, after overcoat leaves initial position, original folded metal shell fragment meeting Automatic-expanding is until block overcoat front opening completely.
Entry needle is the injection needles generally using (general) at present clinically, without particular design.Syringe inner carrier and push rod are the push rod of disposable syringe clinically at present, without particular design.
The invention has the beneficial effects as follows, Secure isolation entry needle can be reached to prevent the effect of pricking wound and body fluid communication risk of infection, easy and simple to handle, quick, safe and effective, simple structure.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.In order to more clearly show syringe construction, in accompanying drawing, the piston of syringe and push rod do not draw.
Fig. 1 is needle isolation type disposable syringe profile.
Fig. 2 is that overcoat is along the track outwards mobile profile driving inner sleeve and entry needle movement.
Fig. 3 is inner sleeve, overcoat comprises entry needle and is separated profile.
Fig. 4 is overcoat when moving forward, and front end shell fragment leaves inner sleeve compressing and automatically rebounding open three-view diagram.
Fig. 5 is that overcoat front end shell fragment launches completely and blocks front end circular hole completely and the three-view diagram be separated with syringe.
Fig. 6 is the three-view diagram of the syringe cylinder (syringe) with event trace groove; Syringe outer surface has 2 vertical fold line grooves.
Fig. 7 is the three-view diagram of the syringe overcoat (overcoat) with metal coating shell fragment; Overcoat front end aperture is other metal clips (folded state), and afterbody inwall has the little square of 2 place's inwardly protruding.
Fig. 8 is the three-view diagram of the threaded syringe inner sleeve (inner sleeve) of inwall tool; Central aperture inwall is helicitic texture, and inner sleeve inwall has 2 place's inwardly protruding cuboids; The lower right corner is three-dimensional view.
Fig. 9 is the three-view diagram of the metal clips (shell fragment) in the circular hole of overcoat front end; Upper left three width figure is the shell fragment of folded state, and the 2 little parallelepiped body portion in place are fixed on the annular sidewall of overcoat front end; The lower right corner is shell fragment deployed condition.
Figure 10 is the three-view diagram of the injection needles generally used clinically at present.
Connected mode:
Fig. 8 inner sleeve circular inside diameters approximates Fig. 6 syringe cylinder external diameter, and the length of the inside ledge of Fig. 8 inner sleeve equals the degree of depth of Fig. 6 syringe concave groove type track, makes to be placed on Fig. 6 syringe front end in Fig. 8 and from outside fit syringe, and inner sleeve can not drop from syringe.
The internal diameter of Fig. 7 overcoat approximates Fig. 6 syringe cylinder external diameter and adds Fig. 8 sidewall of the inside race thickness, and the length of the inside ledge of Fig. 7 overcoat equals the degree of depth and Fig. 8 sidewall of the inside race thickness sum of Fig. 6 syringe concave groove type track, make Fig. 7 outer sleeve around Fig. 6 syringe and Fig. 8 inner sleeve, and overcoat, inner sleeve and syringe fix non-loosening between any two.The inside ledge in inside and outside cover two place is positioned at syringe spill track and can along orbiting motion.
Fig. 9 metal clips and Fig. 7 overcoat front end circular hole internal side wall fix, and are between inner sleeve and overcoat, therefore in folded state; When overcoat is pushed, Automatic-expanding certain angle after shell fragment leaves inner sleeve is until it is 90 ° of expansion that shell fragment fully launches to cover overcoat front end circular hole.When Fig. 8 inner sleeve external diameter adds that Fig. 9 shell fragment folds, thickness equals Fig. 7 outer casing internal diameter, and thickness when Fig. 7 shell fragment folds is very little, is less than 0.5mm.
Figure 10 entry needle afterbody pin fixes with Fig. 6 syringe front end pintle and is combined with Fig. 8 inner sleeve front inner wall spiral way, namely syringe front end pintle external diameter equals entry needle afterbody internal diameter, entry needle afterbody external diameter equals inner sleeve front end circular hole bottom diameter, when inner sleeve is driven, entry needle moves because fixing with inner sleeve and departs from syringe.
Detailed description of the invention
In FIG, syringe front end sleeve has inner sleeve; Inner sleeve and syringe skin overlap and have overcoat; Syringe inner sleeve, outer casing inner wall ledge are chimeric with syringe upper groove also can along orbiting motion, and namely overcoat movement locus is " 7 " font, and inner sleeve movement locus is " 1 " font.Outer casing inner wall ledge original position is top, syringe groove part " 7 " font upper left side, therefore overcoat is not in movable track, fixation when playing injection, and namely overcoat, inner sleeve cannot move forward and backward; Can outwards deviate from when outer casing inner wall ledge is rotated to straight path top cylinder overcoat.Entry needle is connected with syringe, inner sleeve in rotary manner, and entry needle is connected closely with syringe cylinder.
In fig. 2, after injection, overcoat to be turned on its straight path and extrapolated along impression orbit.While overcoat outwards movement, entry needle and inner sleeve are inwardly moved relative to overcoat, and have the trend be accommodated in by entry needle in overcoat.When metal clips leaves syringe inner sleeve, automatically spring open from folded state, as shown in Figure 4.When metal clips is by injection needle point, shell fragment closes syringe overcoat front end circular hole, and now, entry needle cannot pass through left, as shown in Figure 2.When overcoat outwards continues to release, outer casing inner wall ledge promotes inner sleeve circular bottom part simultaneously.Because entry needle and inner sleeve spiral are fixed, so time inner sleeve and entry needle can regard an entirety as, have common kinestate.
In figure 3, when overcoat promotes inner sleeve, entry needle departs from the pintle part of syringe front end because fixing with inner sleeve.Because the external diameter of syringe inner sleeve differs within 0.5mm with the internal diameter of syringe overcoat, therefore the inner sleeve direction of motion only may be moved being parallel on sleeve side wall direction, and can not emerge in syringe overcoat.Therefore, entry needle is closed between syringe overcoat and syringe inner sleeve, and departs from syringe cylinder.Reach the effect of isolation entry needle.
Claims (6)
1. a needle isolation type disposable syringe, comprising: with the entry needle of needle guard, push rod and piston, the syringe cylinder with event trace groove, the syringe overcoat with metal coating shell fragment and the threaded syringe inner sleeve of inwall tool; It is characterized in that: before injection, the entry needle of universal models is fixed on syringe front end in a spiral manner clinically, and entry needle and inner sleeve inner thread agree with and screw, and now entry needle becomes spiral link structure with the threaded syringe inner sleeve of inwall tool; After injection, along with driven forward after " 7 font " the track half-twist on the syringe cylinder of event trace groove, there is the syringe overcoat of metal coating shell fragment, when entry needle is inserted in inside by its syringe overcoat completely, metal clips in its front end circular hole automatically springs open from the state of original collapsible, covers circular hole; Continue to promote in the process of its syringe overcoat, drive the spiral link structure of entry needle and inner sleeve outwards to deviate from, make entry needle be closed in isolated there is metal coating shell fragment syringe overcoat and the threaded syringe inner sleeve of inwall tool in.
2. needle isolation type disposable syringe according to claim 1, the wherein said syringe cylinder with event trace groove, it is characterized in that: needle cylinder surface has the umbilicate type groove of vertical fold line " 7 " zag trajectory, for chimeric with the syringe overcoat and the inside ledge of inwall tool threaded syringe inner sleeve with metal coating shell fragment, and can be movable according to its " 7 " zigzag motion track; Perpendicular to the track of its syringe cylinder in order to fix its inside and outside cover, it is made not easily outwards to deviate from, the active path that the track being parallel to its syringe cylinder is then deviate from for its inside and outside cover.
3. needle isolation type disposable syringe according to claim 1, the wherein said syringe overcoat with metal coating shell fragment, it is characterized in that: Perfect Ring is around the barrel portion of the threaded syringe inner sleeve of inwall tool and the syringe cylinder with event trace groove, its inside ledge in syringe overcoat tail end two place is little cuboid, and be embedded in its syringe cylinder surface groove track, can by the motion of " 7 font " dog-leg path; Leading portion circular open energy and only can make entry needle parallel through; Have sidewall to have folded metal shell fragment in opening, after its syringe overcoat leaves initial position, original folded metal shell fragment meeting Automatic-expanding is until block overcoat front opening completely.
4. needle isolation type disposable syringe according to claim 1, the threaded syringe inner sleeve of wherein said inwall tool, it is characterized in that: be in and have between the syringe overcoat of metal coating shell fragment and the syringe cylinder with event trace groove, closely can entangle its syringe cylinder front end; Its inside ledge in syringe inner sleeve tail end two place is little square, and is embedded in its syringe cylinder surface groove track, can by the motion of " 7 font " dog-leg path; Its syringe inner sleeve leading portion circular open inwall is helicitic texture, is connected in a spiral manner with entry needle, adds sealing and the effect preventing from coming off; Now, entry needle and its syringe inner sleeve are an assembly because spiral fixes, and meanwhile, entry needle is tightly placed in syringe cylinder front end protrusion part and divides, and prevents injection from oozing out.
5. needle isolation type disposable syringe according to claim 1, the metal clips in the front end circular hole having in the syringe overcoat of metal coating shell fragment described in it; It is characterized in that: metal clips and its syringe overcoat front end circular hole internal side wall fix, and are between inner sleeve and overcoat, in folded state; When its syringe overcoat is pushed, Automatic-expanding after metal clips leaves its syringe inner sleeve is until shell fragment fully launches to cover overcoat front end circular hole, and in 90 °, and thickness when shell fragment folds is less than 0.5mm, does not affect the kinestate of its syringe overcoat.
6. needle isolation type disposable syringe according to claim 1, the spiral link structure that wherein said entry needle and inner sleeve are formed, it is characterized in that: entry needle in a spiral manner syringe inner sleeve threaded with inwall tool is combined, and interfix, there is identical physical motion state, namely, when the threaded syringe inner sleeve of inwall tool is pushed, entry needle has identical kinestate simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310223365.6A CN103285453B (en) | 2013-06-05 | 2013-06-05 | Needle isolation type disposable syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310223365.6A CN103285453B (en) | 2013-06-05 | 2013-06-05 | Needle isolation type disposable syringe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103285453A CN103285453A (en) | 2013-09-11 |
| CN103285453B true CN103285453B (en) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310223365.6A Expired - Fee Related CN103285453B (en) | 2013-06-05 | 2013-06-05 | Needle isolation type disposable syringe |
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| Country | Link |
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| CN (1) | CN103285453B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017083622A1 (en) * | 2015-11-13 | 2017-05-18 | Bayer Healthcare Llc | Nested syringe assembly |
| CN112494756B (en) * | 2020-10-28 | 2022-06-24 | 重庆医科大学附属永川医院 | Anesthesia injection device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203436629U (en) * | 2013-06-05 | 2014-02-19 | 倪伟清 | Syringe needle isolation type disposable syringe |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4631057A (en) * | 1985-12-17 | 1986-12-23 | Dolores A. Smith | Shielded needle |
| US4643200A (en) * | 1986-03-27 | 1987-02-17 | Jennings Jr Baldwin P | Safety blood donor apparatus |
| US5562625A (en) * | 1995-05-02 | 1996-10-08 | Stefancin, Jr.; Ronald J. | Reusasble syringe with a disposable needle sheath |
| US6210374B1 (en) * | 2000-04-20 | 2001-04-03 | Robert Malencheck | Needle protective sheath device |
| CN2780222Y (en) * | 2005-04-16 | 2006-05-17 | 黄永强 | Safety needle |
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2013
- 2013-06-05 CN CN201310223365.6A patent/CN103285453B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203436629U (en) * | 2013-06-05 | 2014-02-19 | 倪伟清 | Syringe needle isolation type disposable syringe |
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| CN103285453A (en) | 2013-09-11 |
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