CN102697512A - Disposable safely-retracting blood taking needle - Google Patents
Disposable safely-retracting blood taking needle Download PDFInfo
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- CN102697512A CN102697512A CN2012101815778A CN201210181577A CN102697512A CN 102697512 A CN102697512 A CN 102697512A CN 2012101815778 A CN2012101815778 A CN 2012101815778A CN 201210181577 A CN201210181577 A CN 201210181577A CN 102697512 A CN102697512 A CN 102697512A
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- needle
- blood taking
- needle holder
- disposable use
- overcoat
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Abstract
The invention discloses a disposable safely-retracting blood taking needle which comprises a needle holder, a puncture needle, a core bar and a blood taking needle body; the core bar comprises a puncture needle seat and a blood taking needle seat which are combined as a whole; the puncture needle and the needle holder are both fixed at the upper end of the puncture needle seat; the needle holder covers the puncture needle; a circle of clamping groove is formed in the outer wall of the blood taking needle seat; a piston or an O-shaped ring is clamped between the clamping groove and an outer sleeve; the core bar and the outer sleeve are driven to move relatively through relative moving of the piston or the O-shaped ring and the outer sleeve; a plurality of feed-through type notches are formed in the inner wall at the upper end of the outer sleeve; and when the piston or the O-shaped ring moves to the feed-through type notches, the piston or the O-shaped ring can be clamped in the feed-through type notches. The disposable safely-retracting blood taking needle has the advantage that the phenomenon that a blood taking needle is too tight during the retracting process can be relieved, so that medical risks brought by the blood taking needle can be reduced greatly.
Description
Technical field
The present invention relates to a kind of blood taking needle, particularly relate to a kind of disposable use retraction safe injection needle.
Background technology
Blood taking needle is one of maximum medical device product of present global sales.Yet, it is worth noting that countries in the world hospital takes place millions of person-times because of human injury's accident that syringe needle ruptures or medical personnel's misoperation is caused is annual at present.The statistical data that American Medical Association announces shows, only the U.S. 1,000,000 person-times of medical personnel's accidents take place every year is approximately stabbed accident by entry needle, the hepatitis B virus, hepatitis C virus and the AIDS viral infection that wherein have at least over thousands of people to be adhered on the syringe needle.The medical personnel that at every turn stabbed because of the blood collection needles fracture and the emergency treatment expense of patient's generation are 3000 dollars per capita.
The medical-risk that common blood taking needle causes can not be lower than the medical-risk of syringe.The research and development that at present domestic and international company drops into the safety injection medical device in succession energetically, a lot of not enough but these safety blood taking equipment on the existing market exist: first production cost is very high; It two is complex manufacturing; It three is that the quality of production is difficult to guarantee; It four is medical personnel's complex operations; It five is that security function is difficult to guarantee.And entry needle produces the tension phenomenon because of material cause in retraction process.
Therefore, develop a kind of disposable use retraction safety blood taking needle set great and long-range meaning is arranged.
Summary of the invention
The technical problem that the present invention will solve is the defective that is easy to generate the tension phenomenon in the prior art in safety blood taking pin medical-risk height, complicated operation and the retraction process in order to overcome, and a kind of disposable use retraction safety blood taking pin is provided.
The present invention solves above-mentioned technical problem through following technical proposals: a kind of disposable use retraction safety blood taking pin; Comprise that a needle holder, is with the puncture needle of a gum cover, and is arranged in a core bar and a blood taking needle in the overcoat; Its characteristics are; Said core bar comprises a Paracentesis needle holder and a blood sampling needle stand that is combined into one, and said puncture needle and said needle holder all are fixed on the upper end of said Paracentesis needle holder, and said needle holder covers said puncture needle;
The outer wall of said blood sampling needle stand is provided with a circle draw-in groove, and card is established a piston or an O type circle between said draw-in groove and said overcoat, drives said core bar and said overcoat relatively moves through relatively moving between said piston or said O type circle and the said overcoat;
Offer several through notches on the upper end inwall of said overcoat, when said piston or said O type circle moved to said through notch place, said piston or said O type circle snapped in the said through notch;
Said blood taking needle is fixed on the lower end of said blood sampling needle stand, and in the outside of said blood taking needle a sheathed sheath.
Preferably, said needle holder is that spiral is connected with said Paracentesis needle holder.
Preferably, the upper end of said Paracentesis needle holder is provided with a double-screw bolt and a snap ring from lower to upper successively, and said Paracentesis needle holder is connected said snap ring and said gum cover buckle through said double-screw bolt with said needle holder spiral.
Preferably, said Paracentesis needle holder and said blood sampling needle stand are clamping.
Preferably, said Paracentesis needle holder lower end is provided with one and connects the vertebra head, also is provided with a convex tendon in the outside, end of said connection vertebra head, establishes a hole clipping in the upper end of said blood sampling needle stand, and said connection vertebra head is buckled in the said hole clipping.
Preferably, said convex tendon is bonded in the said hole clipping.
Preferably, the lower end of said blood sampling needle stand is provided with a cylinder, and said cylinder bottom is provided with an installing hole, and said blood taking needle is fixed in the said installing hole.
Preferably, in said Paracentesis needle holder and the said blood sampling needle stand through hole is set respectively, said through hole is interconnected and forms a passage.
Preferably, the aperture of said passage is 0.2mm-6mm.
Preferably, be provided with a bulge loop in the said draw-in groove upper end of said blood sampling needle stand, the upper end inwall of said overcoat is provided with an annular slot, and when said annular slot moved to said bulge loop place, said bulge loop was buckled in the said annular slot.
Among the present invention, but above-mentioned optimum condition combination in any on the basis that meets this area general knowledge promptly gets each preferred embodiment of the present invention.
Positive progressive effect of the present invention is: the disposable use retraction of the present invention safety blood taking pin is through the setting of through notch; Utilize its expansion; Alleviate the tension phenomenon in the blood taking needle retraction process, make piston or the said O type circle of core bar be fastened in the through notch and position.This blood taking needle can effectively avoid blood taking needle to stab accident, greatly reduces the medical-risk of blood taking needle.In addition, it is simple in structure and easy to operate, efficiently solves the problem of existing safe hemostix manufacturing cost height and generation complex process.
Description of drawings
Fig. 1 is the overall structure sketch map one of the preferred embodiment of the disposable use retraction of the present invention safety blood taking pin.
Fig. 2 is the overall structure sketch map two of the preferred embodiment of the disposable use retraction of the present invention safety blood taking pin.
Fig. 3 is the structural representation of Paracentesis needle holder in the preferred embodiment of the disposable use retraction of the present invention safety blood taking pin.
Fig. 4 is the structural representation of blood sampling needle stand in the preferred embodiment of the disposable use retraction of the present invention safety blood taking pin.
Fig. 5 is the structural representation of overcoat in the preferred embodiment of the disposable use retraction of the present invention safety blood taking pin.
The specific embodiment
Provide preferred embodiment of the present invention below in conjunction with accompanying drawing, to specify technical scheme of the present invention.
Like Fig. 1-shown in Figure 5, the disposable use retraction of the present invention safety blood taking pin comprises a needle holder 1, a puncture needle 2, a core bar, blood taking needle 5, an overcoat 7 and a sheath 8.Wherein, said core bar comprises that a Paracentesis needle holder 3 and a blood sampling needle stand 4 combine, and make said core bar be located in the overcoat 7.Puncture needle 2 all is fixed on the upper end of Paracentesis needle holder 3 with needle holder 1, and makes needle holder 1 cover puncture needle 2.One circle draw-in groove 43 (as shown in Figure 4) is set on the outer wall of blood sampling needle stand 4; Card is established a piston 6 or said O type circle between draw-in groove 43 and overcoat 7; Be example with piston 6 in the present embodiment, drive relatively moving between said core bar and the overcoat 7 through relatively moving between piston 6 and the overcoat 7.Simultaneously, blood taking needle 5 is fixed on the lower end of blood sampling needle stand 4, and makes sheath 8 be set in the outside of blood taking needle 5, prevent that with this blood taking needle from mistake taking place prick phenomenon and prevent that blood taking needle from being polluted.In addition, the sheathed gum cover 9 in the outside of puncture needle 2 punctures gum cover 9 through puncture needle 2 during use and realizes sampling.
Preferably, adopt spiral to be connected between needle holder 1 and the Paracentesis needle holder 3.The upper end of Paracentesis needle holder 3 is provided with a double-screw bolt 32 and a snap ring 35 from lower to upper successively; The lower end of needle holder 1 be provided with one have a female thread the connecting portion (not shown); Paracentesis needle holder 3 is connected with connecting portion spiral on the needle holder 1 through double-screw bolt 32, and snap ring 35 and gum cover 9 mutual buckles.This connected mode can connect needle holder 1 and Paracentesis needle holder 3 securely, and slip phenomenon takes place when preventing to use.
Especially, adopt the mode of clamping between Paracentesis needle holder 3 and the blood sampling needle stand 4.Particularly, the lower end of Paracentesis needle holder 3 is provided with one and connects vertebra head 33, also is provided with a convex tendon 34 in the outside, end that connects vertebra head 33.In the upper end of blood sampling needle stand 4, establish a hole clipping (not shown), connect vertebra head 33 and be buckled in the said hole clipping, thereby realize the Paracentesis needle holder 3 and being fixedly connected between the needle stand 4 of taking a blood sample.Further, convex tendon 34 adopts glue to be bonded in the said hole clipping, make puncture seat 3 with take a blood sample between the needle stand 4 be connected more firm.
In addition, be provided with a cylinder 42 in the lower end of blood sampling needle stand 4, and be provided with an installing hole 421, make blood taking needle 5 be fixed in the installing hole 421 in the bottom of cylinder 42.Can securely connect blood taking needle 5 and blood sampling needle stand 4 like this, prevent to produce blood taking needle 5 obscissions.
Preferably, a through hole 31 is set in Paracentesis needle holder 3, in blood sampling needle stand 4, a through hole 41 is set.After Paracentesis needle holder 3 and blood sampling needle stand 4 interconnected, through hole 31 was interconnected with through hole 41 and forms a passage, and said passage is used for the circulation of blood.The aperture of said passage is preferably 0.2mm-6mm.Further; Draw-in groove 43 upper ends at blood sampling needle stand 4 are provided with a bulge loop 44; Correspondingly the upper end inwall of its external sleeve 7 is provided with an annular slot 71, when annular slot 71 moves to bulge loop 44 places, bulge loop 44 is buckled in the annular slot 71; Thereby stop overcoat 7 to continue to move, make blood taking needle 5 be hidden in the overcoat 7.Total can prevent effectively that blood taking needle 5 from the mistake bundle taking place wait malpractice.
Especially, as shown in Figure 5, offer several through notches 72 on the upper end inwall of its external sleeve 7.Also be provided with screens 73 on the upper end inwall of its external sleeve 7, through notch 72 be positioned at screens 73 around.When said core bar moves up when retraction, the piston 6 on the said core bar produces friction with the inwall of overcoat 7, in case when piston 6 moved to through notch 72 places, piston 6 snapped in the through notch 72.This structure can effectively solve the tension phenomenon that produces because of material cause between overcoat 7 and the said core bar, and said thus core bar can snap in through notch 72 like a cork, thereby it is fixing to be positioned.
According to said structure; Concrete occupation mode of the present invention is following: after said safety blood taking pin is used to complete, promote overcoat 7 forward, piston 6 relative overcoats 7 produce relative displacement; Thereby drive said core bar and overcoat 7 also relatively moves; Slide to bulge loop 44 places on the blood sampling needle stand 4 up to the annular slot on the overcoat 7 71, annular slot 71 withholds with bulge loop 44, and overcoat 7 stops to move.At this moment, blood taking needle 5 just has been hidden in the overcoat 7, and accident has not been stabbed the people to blood taking needle 5 with regard to not exposing like this.Safety blood taking needle construction of the present invention is simple and easy to use, can prevent effectively that blood taking needle from stabbing accident, greatly reduces the medical-risk of blood taking needle.
Though more than described the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, protection scope of the present invention is limited appended claims.Those skilled in the art can make numerous variations or modification to these embodiments under the prerequisite that does not deviate from principle of the present invention and essence, but these changes and modification all fall into protection scope of the present invention.
Claims (10)
1. disposable use retraction safety blood taking pin; Comprise that a needle holder, is with the puncture needle of a gum cover, and is arranged in a core bar and a blood taking needle in the overcoat; It is characterized in that; Said core bar comprises a Paracentesis needle holder and a blood sampling needle stand that is combined into one, and said puncture needle and said needle holder all are fixed on the upper end of said Paracentesis needle holder, and said needle holder covers said puncture needle;
The outer wall of said blood sampling needle stand is provided with a circle draw-in groove, and card is established a piston or an O type circle between said draw-in groove and said overcoat, drives said core bar and said overcoat relatively moves through relatively moving between said piston or said O type circle and the said overcoat;
Offer several through notches on the upper end inwall of said overcoat, when said piston or said O type circle moved to said through notch place, said piston or said O type circle snapped in the said through notch;
Said blood taking needle is fixed on the lower end of said blood sampling needle stand, and in the outside of said blood taking needle a sheathed sheath.
2. disposable use retraction safety blood taking pin as claimed in claim 1 is characterized in that said needle holder is that spiral is connected with said Paracentesis needle holder.
3. disposable use retraction safety blood taking pin as claimed in claim 2; It is characterized in that; The upper end of said Paracentesis needle holder is provided with a double-screw bolt and a snap ring from lower to upper successively, and said Paracentesis needle holder is connected said snap ring and said gum cover buckle through said double-screw bolt with said needle holder spiral.
4. disposable use retraction safety blood taking pin as claimed in claim 1 is characterized in that said Paracentesis needle holder and said blood sampling needle stand are clamping.
5. disposable use retraction safety blood taking pin as claimed in claim 4; It is characterized in that; Said Paracentesis needle holder lower end is provided with one and connects the vertebra head; The outside, end at said connection vertebra head also is provided with a convex tendon, establishes a hole clipping in the upper end of said blood sampling needle stand, and said connection vertebra head is buckled in the said hole clipping.
6. disposable use retraction safety blood taking pin as claimed in claim 5 is characterized in that said convex tendon is bonded in the said hole clipping.
7. disposable use retraction safety blood taking pin as claimed in claim 1 is characterized in that the lower end of said blood sampling needle stand is provided with a cylinder, and said cylinder bottom is provided with an installing hole, and said blood taking needle is fixed in the said installing hole.
8. disposable use retraction safety blood taking pin as claimed in claim 1 is characterized in that in said Paracentesis needle holder and the said blood sampling needle stand through hole is set respectively, said through hole is interconnected and forms a passage.
9. disposable use retraction safety blood taking pin as claimed in claim 8 is characterized in that the aperture of said passage is 0.2mm-6mm.
10. like each described disposable use retraction safety blood taking pin of claim 1-9; It is characterized in that; Said draw-in groove upper end at said blood sampling needle stand is provided with a bulge loop; The upper end inwall of said overcoat is provided with an annular slot, and when said annular slot moved to said bulge loop place, said bulge loop was buckled in the said annular slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101815778A CN102697512A (en) | 2012-06-04 | 2012-06-04 | Disposable safely-retracting blood taking needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101815778A CN102697512A (en) | 2012-06-04 | 2012-06-04 | Disposable safely-retracting blood taking needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102697512A true CN102697512A (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101815778A Pending CN102697512A (en) | 2012-06-04 | 2012-06-04 | Disposable safely-retracting blood taking needle |
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| Country | Link |
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| CN (1) | CN102697512A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103976747A (en) * | 2014-04-11 | 2014-08-13 | 上海金塔医用器材有限公司 | Safety blood taking needle |
| CN104138264A (en) * | 2014-07-28 | 2014-11-12 | 上海金塔医用器材有限公司 | Safe blood taking needle |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19543313A1 (en) * | 1995-11-21 | 1997-06-05 | Saueressig Ulrich | Safety cannula for use in dialysis |
| US20090118678A1 (en) * | 2003-11-21 | 2009-05-07 | Tsk Laboratory Japan | Injection needle |
| CN201481428U (en) * | 2009-08-10 | 2010-05-26 | 柳新荣 | Disposable blood sampling device |
| CN201481910U (en) * | 2009-06-25 | 2010-05-26 | 陈玉华 | Disposable safe remaining needle |
| CN201775632U (en) * | 2010-09-03 | 2011-03-30 | 威海鸿宇医疗器械有限公司 | Visible-return-blood blood lancet |
| CN202086482U (en) * | 2011-04-11 | 2011-12-28 | 成都市新津事丰医疗器械有限公司 | Disposable spiral type vacuum blood taking needle |
| CN202636954U (en) * | 2012-06-04 | 2013-01-02 | 上海金塔医用器材有限公司 | Disposable retractable safety lancet |
-
2012
- 2012-06-04 CN CN2012101815778A patent/CN102697512A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19543313A1 (en) * | 1995-11-21 | 1997-06-05 | Saueressig Ulrich | Safety cannula for use in dialysis |
| US20090118678A1 (en) * | 2003-11-21 | 2009-05-07 | Tsk Laboratory Japan | Injection needle |
| CN201481910U (en) * | 2009-06-25 | 2010-05-26 | 陈玉华 | Disposable safe remaining needle |
| CN201481428U (en) * | 2009-08-10 | 2010-05-26 | 柳新荣 | Disposable blood sampling device |
| CN201775632U (en) * | 2010-09-03 | 2011-03-30 | 威海鸿宇医疗器械有限公司 | Visible-return-blood blood lancet |
| CN202086482U (en) * | 2011-04-11 | 2011-12-28 | 成都市新津事丰医疗器械有限公司 | Disposable spiral type vacuum blood taking needle |
| CN202636954U (en) * | 2012-06-04 | 2013-01-02 | 上海金塔医用器材有限公司 | Disposable retractable safety lancet |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103976747A (en) * | 2014-04-11 | 2014-08-13 | 上海金塔医用器材有限公司 | Safety blood taking needle |
| CN103976747B (en) * | 2014-04-11 | 2015-12-09 | 上海金塔医用器材有限公司 | Safe blood-taking needle |
| CN104138264A (en) * | 2014-07-28 | 2014-11-12 | 上海金塔医用器材有限公司 | Safe blood taking needle |
| CN104138264B (en) * | 2014-07-28 | 2016-08-24 | 上海金塔医用器材有限公司 | Safe blood-taking needle |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121003 |