CN202218877U - Rear-pressing type disposable safety blood-taking needle - Google Patents
Rear-pressing type disposable safety blood-taking needle Download PDFInfo
- Publication number
- CN202218877U CN202218877U CN2011203323158U CN201120332315U CN202218877U CN 202218877 U CN202218877 U CN 202218877U CN 2011203323158 U CN2011203323158 U CN 2011203323158U CN 201120332315 U CN201120332315 U CN 201120332315U CN 202218877 U CN202218877 U CN 202218877U
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- needle
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- shell
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Abstract
The utility model provides a rear-pressing type disposable safety blood-taking needle which comprises a shell, a pushing unit and a needle body unit. The impulsion at the reset moment of a compression elastic unit is utilized for popping out the needle body unit, then the force for resetting a tensile elastic unit is utilized for drawing the needle body back, so that the pricking operation with the needle is finished; after use, the needle point is concealed in a safety area in a cavity of the shell; and the needle cannot be used again after the needle finishes the pricking operation, therefore, the needle is safe, reliable and convenient.
Description
Technical field
This utility model relates to the medical apparatus technical field, relates in particular to a kind of back pressure type disposable safe blood taking needle.
Background technology
Need use blood taking needle that human body skin tip Wicresoft cut is carried out trace blood during Clinical Laboratory, and traditional blood taking needle needle point exposes, and the depth and the dynamics of acupuncture treatment are by artificial control; Therefore cause patients ' psychological nervous easily; In addition, this blood taking needle is repeated because sign is improper to use after use probably; Or use needle point protection later improper, healthcare givers, patient etc. is brought injury, causes infection.Existing can reusable blood collecting pen; After using, replace used needle point at every turn; To be reinstalled on the blood collecting pen for using next time through the untapped needle point of sterilizing, still, not have clear and definite sign later because this blood collecting pen uses; Also might be repeated to use, cause cross infection.Therefore, develop the research topic that a kind of disposable safety blood taking pin becomes this utility model.
Summary of the invention
This utility model provides a kind of back pressure type disposable safe blood taking needle, and purpose is to make blood taking needle not reuse, and after using, can needle point be protected, in order to avoid accidentally injure.
For achieving the above object, the technical scheme that this utility model adopts is: a kind of back pressure type disposable safe blood taking needle, comprise a shell, a pushing unit and a needle unit, and it is characterized in that:
Said shell is a hollow cylinder; This hollow cylinder is divided into a front end and a rear end vertically; Front end at shell is provided with a needle outlet; Be provided with a pilot hole in the rear end of shell, the position near the rear end on the inwall of shell is provided with the first location barb, and the outer casing inner wall between first location barb to the front end is provided with the second location barb;
Said pushing unit comprises a tabletting; The front of tabletting is a press surface; Middle position at the tabletting back side vertically extends a flexible member; The free end of said flexible member is provided with a draw-in groove, vertically extends card article on the flexible member side from the tabletting back side, and the card article outside is arranged at intervals with first location hook and second location hook that matches with the first location barb vertically;
Said needle unit comprises a needle handle and a syringe needle; Said syringe needle protrudes from an end of said needle handle; The other end of needle handle is provided with the buckle that matches with the free-ended draw-in groove in said pushing unit, at the other grab that matches with the second location barb that extends from needle handle of buckle.
Related content in the technique scheme is explained as follows:
1, in the such scheme, said outer casing inner wall is provided with the guide rail that slides corresponding to needle unit.
2, in the such scheme, the needle handle sidepiece of said needle unit is provided with the guiding point that matches with the guide rail of outer casing inner wall.
3, in the such scheme, the syringe needle on the said needle unit is with a guard bar outward.
4, in the such scheme; Card article on the said pushing unit is a strip; The quantity of card article is at least two; And around flexible member circumferentially evenly or symmetric arrangement, the quantity of card article is identical with the quantity of the first location barb, and card article is located barb at the position on the tabletting and first, and the position on the wall is corresponding one by one in the enclosure.
5, in the such scheme; Grab on the said needle unit is the coupler body shape; The quantity of grab is at least two; And around needle handle circumferentially evenly or symmetric arrangement, the quantity of grab is identical with the quantity of the second location barb, and grab is located barb at the circumferential position and second of needle handle, and the circumferential position of wall is corresponding one by one in the enclosure.
6, in the such scheme, the press surface of said tabletting is provided with concavo-convex anti-skid structure.
This utility model operation principle is: utilize the reset impulse force of moment of elasticity of compression unit that needle unit is launched away, the strength of utilizing the tensile elasticity unit to reset again retracts needle body, thereby realizes once acupuncture treatment.
Because the technique scheme utilization, this utility model compared with prior art has advantage:
1, because this utility model adopts two groups of location hooks, one group of buckle and two groups of location barbs; Realize double insurance, even the unexpected shell that breaks away from pushing unit, needle unit also can be bound in the cavity of shell; Can not be repeated to use, also can not cause accidental injury.
2, because the press surface of this utility model pushing unit tabletting is provided with concavo-convex anti-skid structure, use more safe and reliable.
Description of drawings
Accompanying drawing 1 is the overall structure axonometric chart of this utility model;
Accompanying drawing 2 is this utility model shell axonometric chart;
Accompanying drawing 3 is this utility model shell side view;
Accompanying drawing 4 is this utility model cut-away view of outer cover;
Accompanying drawing 5 is this utility model shell vertical view;
Accompanying drawing 6 is this utility model pushing unit front view;
Accompanying drawing 7 is this utility model needle unit front view;
Accompanying drawing 8 is the needle unit axonometric chart of this utility model band guard bar;
Accompanying drawing 9 is this utility model explosive view;
Accompanying drawing 10 is this utility model original state cutaway view;
Accompanying drawing 11 is this utility model pressed state cutaway view;
Accompanying drawing 12 is this utility model ejection status cutaway view;
Accompanying drawing 13 is this utility model end-state cutaway view.
In the above accompanying drawing: 1, pushing unit; 11, tabletting; 12, card article; 13, first location hook; 14, second location hook; 15, flexible member; 16, draw-in groove; 2, needle unit; 21, buckle; 22, grab; 23, guiding point; 24, syringe needle; 25, guard bar; 26, needle handle; 3, shell; 31, the first location barb; 32, the second location barb; 33, pilot hole; 34, needle outlet; 35, guide rail.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment this utility model is further described:
Embodiment: back pressure type disposable safe blood taking needle
Shown in accompanying drawing 9, comprise a shell 3, a pushing unit 1 and a needle unit 2, it is characterized in that:
Said shell 3 is a hollow cylinder; This hollow cylinder is divided into a front end and a rear end vertically; Front end at shell 3 is provided with a needle outlet 34; Be provided with a pilot hole 33 in the rear end of shell 3, be provided with the second location barb 32 at the outer casing inner wall that is provided with between the first location barb, 31, the first location barb 31 to the front ends near the position of rear end on the inwall of shell 3;
Said pushing unit 1 comprises a tabletting 11; The front of tabletting 11 is a press surface; Middle position at tabletting 11 back sides vertically extends a flexible member 15; The free end of said flexible member 15 is provided with a draw-in groove 16, vertically extends card article 12 on flexible member 15 sides from tabletting 11 back sides, and the card article outside is arranged at intervals with first location hook 13 and second location hook 14 that matches with the first location barb 31 vertically;
Said needle unit 2 comprises a needle handle 26 and a syringe needle 24; Said syringe needle 24 protrudes from an end of said needle handle 26; The other end of needle handle 26 is provided with the buckle 21 that matches with said pushing unit 1 free-ended draw-in groove 16, at the buckle 21 other grabs 22 that match with the second location barb 32 that extend from needle handle 26.
Said shell 3 inwalls are provided with the guide rail 35 that slides corresponding to needle unit 2.
Needle handle 26 sidepieces of said needle unit 2 are provided with the guiding point 23 that matches with the guide rail 35 of shell 3 inwalls.
The syringe needle 24 outer guard bars 25 that are with on the said needle unit 2.
Grab 22 on the said needle unit 2 is the coupler body shape; The quantity of grab 22 is at least two; And circumferentially even or symmetric arrangement around needle handle 26; The quantity of the quantity of grab 22 and the second location barb is identical, and it is corresponding one by one at the circumferential position of shell 3 inwalls that grab 22 is located barb 32 at the circumferential positions and second of needle handle 26.
The press surface of said tabletting 11 is provided with concavo-convex anti-skid structure.
Shown in figure 10, be the original state of this utility model, second location hook 14 cooperates with the first location barb 31; Draw-in groove 16 cooperates with buckle 21; Grab 22 cooperates with the second location barb 32, and pushing unit 1 and the pilot hole 33 of needle unit 2 through shell 3 are installed in the cavity of shell 3, at this moment; Syringe needle 24 is positioned at the cavity of shell 3, and flexible member 15 is in compressive state.
Like Figure 11, shown in 12, when external force acted on the press surface of tabletting 11, pushing unit 1 was to the nose motion of shell 3; When the free end of card article 12 moved to grab 22 positions, the free end of card article 12 inwardly pushed grab 22, when the distance between the grab 22 less than second location between the barb 32 apart from the time; The reset impulse force of moment of flexible member 15 launches away needle unit 2; Syringe needle 24 thrusts the human body skin tip through needle outlet 34, and at this moment, flexible member 15 is in extended state.
Shown in figure 13; Flexible member 15 resets, and needle unit 2 is retracted, in the cavity of syringe needle 24 withdrawal shells 3; Because the restriction of the first location barb 31 and the second location barb 32; First location hook 13 cooperates with the first location barb 31, and buckle 21 cooperates with the second location barb, and pushing unit 1 and needle unit 2 all are bound in the cavity of shell 3.
The foregoing description only is the technical conceive and the characteristics of explanation this utility model, and its purpose is to let the personage who is familiar with this technology can understand content of this utility model and enforcement according to this, can not limit the protection domain of this utility model with this.All equivalences of being done according to this utility model spirit change or modify, and all should be encompassed within the protection domain of this utility model.
Claims (7)
1. pressure type disposable safe blood taking needle after a kind comprises a shell, a pushing unit and a needle unit, it is characterized in that:
Said shell is a hollow cylinder; This hollow cylinder is divided into a front end and a rear end vertically; Front end at shell is provided with a needle outlet; Be provided with a pilot hole in the rear end of shell, the position near the rear end on the inwall of shell is provided with the first location barb, and the outer casing inner wall between first location barb to the front end is provided with the second location barb;
Said pushing unit comprises a tabletting; The front of tabletting is a press surface; Middle position at the tabletting back side vertically extends a flexible member; The free end of said flexible member is provided with a draw-in groove, vertically extends card article on the flexible member side from the tabletting back side, and the card article outside is arranged at intervals with first location hook and second location hook that matches with the first location barb vertically;
Said needle unit comprises a needle handle and a syringe needle; Said syringe needle protrudes from an end of said needle handle; The other end of needle handle is provided with the buckle that matches with the free-ended draw-in groove in said pushing unit, at the other grab that matches with the second location barb that extends from needle handle of buckle.
2. blood taking needle according to claim 1 is characterized in that: said outer casing inner wall is provided with the guide rail that slides corresponding to needle unit.
3. blood taking needle according to claim 2 is characterized in that: the needle handle sidepiece of said needle unit is provided with the guiding point that matches with the guide rail of outer casing inner wall.
4. blood taking needle according to claim 1 is characterized in that: the syringe needle on the said needle unit is with a guard bar outward.
5. blood taking needle according to claim 1; It is characterized in that: the card article on the said pushing unit is a strip; The quantity of card article is at least two; And around flexible member circumferentially evenly or symmetric arrangement, the quantity of card article is identical with the quantity of the first location barb, and card article is located barb at the position on the tabletting and first, and the position on the wall is corresponding one by one in the enclosure.
6. blood taking needle according to claim 1; It is characterized in that: the grab on the said needle unit is the coupler body shape; The quantity of grab is at least two; And around needle handle circumferentially evenly or symmetric arrangement, the quantity of grab is identical with the quantity of the second location barb, and grab is located barb at the circumferential position and second of needle handle, and the circumferential position of wall is corresponding one by one in the enclosure.
7. blood taking needle according to claim 1 is characterized in that: the press surface of said tabletting is provided with concavo-convex anti-skid structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203323158U CN202218877U (en) | 2011-09-06 | 2011-09-06 | Rear-pressing type disposable safety blood-taking needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203323158U CN202218877U (en) | 2011-09-06 | 2011-09-06 | Rear-pressing type disposable safety blood-taking needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202218877U true CN202218877U (en) | 2012-05-16 |
Family
ID=46040917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203323158U Expired - Fee Related CN202218877U (en) | 2011-09-06 | 2011-09-06 | Rear-pressing type disposable safety blood-taking needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202218877U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107405119A (en) * | 2015-01-20 | 2017-11-28 | 广州市健之堂医疗器械有限公司 | A kind of safety type blood collecting needle construction |
-
2011
- 2011-09-06 CN CN2011203323158U patent/CN202218877U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107405119A (en) * | 2015-01-20 | 2017-11-28 | 广州市健之堂医疗器械有限公司 | A kind of safety type blood collecting needle construction |
| CN107405119B (en) * | 2015-01-20 | 2020-06-16 | 广州市健之堂医疗器械有限公司 | Safe blood taking needle structure |
| CN112155563A (en) * | 2015-01-20 | 2021-01-01 | 广州市健之堂医疗器械有限公司 | Safe blood taking needle structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120516 Termination date: 20140906 |
|
| EXPY | Termination of patent right or utility model |