CN204744200U - Novel preceding pressure formula blood taking needle device - Google Patents
Novel preceding pressure formula blood taking needle device Download PDFInfo
- Publication number
- CN204744200U CN204744200U CN201520433838.XU CN201520433838U CN204744200U CN 204744200 U CN204744200 U CN 204744200U CN 201520433838 U CN201520433838 U CN 201520433838U CN 204744200 U CN204744200 U CN 204744200U
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- China
- Prior art keywords
- sliding sleeve
- needle body
- housing
- needle
- casing
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Abstract
The utility model discloses a novel preceding pressure formula blood taking needle device, including casing, sliding sleeve and needle body, the casing includes first shell and second shell of looks block, the needle body front end is equipped with the syringe needle, the casing inner chamber is equipped with and is used for supplying sliding sleeve axial displacement is and the sliding sleeve front end can stretch out the outer first direction spacing groove of casing, be equipped with in the sliding sleeve and be used for supplying needle body axial displacement's second direction spacing groove, be equipped with on the needle body and support when being used for assembling elasticity bayonet catch behind the sliding sleeve on the wall, be equipped with in the casing and be used for the sliding sleeve front end returns the retraction make in the time of in the casing elasticity bayonet catch follows on the needle body break away from on the wall behind the sliding sleeve and get into dropout in the sliding sleeve is protruding, the needle body with be connected with between the casing inner chamber bottom and be used for promoting the needle body antedisplacement so that the syringe needle is followed the sliding sleeve front end stings out the outer spring of casing. The present case simple structure easily realize, it is few to constitute the part, and convenient assembling is safe in utilization.
Description
[technical field]
This utility model relates to a kind of novel front pressure type blood lancet device.
[background technology]
At present, generally disposable blood taking needle is coordinated to use by blood collecting pen during domestic regular medication blood sampling, this hemostix in use, disposable blood taking needle is arranged on the head of blood collecting pen, disposable blood taking needle is taken off after transmitting, then load onto new blood taking needle to reuse, because blood collecting pen repeatedly uses, easily cause many people cross infection.
Must a people one when China's Ministry of Public Health specifies clinical acquisitions peripheral blood at present, must not many people share, but also there is a problem in this disposable lancing device, disposable blood taking needle completes primary emission, just ejecting after piercing outside blood collecting pen and cannot retract, the needle point after using is exposed to outside, needs artificial treatment to be pulled up by syringe needle, because the syringe needle after blood sampling exposes, staff is easy to careless bundle and arrives when processing, can cause cross infection, there is certain potential safety hazard.So, the retractible disposable blood collecting pen of syringe needle after various use has been there is in prior art, as the Chinese utility model patent " disposable safe type blood taking needle " that application number is 03141465.6, the patent No. is the disposable blood taking needle that the Chinese utility model patent " needle tip retracts type disposable safe blood taking needle and primary emission type safety blood taking pen " of ZL200410064671.0 all discloses a kind of retractable needle after transmitting, but the blood taking needle structure of above-mentioned patent is compact not, and the parts related to are relatively many, coordinate blood collecting pen to realize using as also needed in latter patent simultaneously, structure relative complex.
Therefore, be necessary to solve as above problem.
[utility model content]
This utility model overcomes the deficiency of above-mentioned technology, provides a kind of novel front pressure type blood lancet device, and its structure is simple and easy to realize, and building block is few, easy to assembly, use safety.
For achieving the above object, this utility model have employed following technical proposal:
A kind of novel front pressure type blood lancet device, include housing 1, sliding sleeve 2, and needle body 3, described housing 1 comprises the upper half shell 101 and lower half shell 102 that fasten, described needle body 3 front end is provided with syringe needle 31, described housing 1 inner chamber is provided with for moving axially and the first guide and limit groove 11 outside housing 1 can be stretched out in sliding sleeve 2 front end for described sliding sleeve 2, the second guide and limit groove 21 for moving axially for described needle body 3 is provided with in described sliding sleeve 2, described needle body 3 is against the Elastic buckle 32 on described sliding sleeve 2 rear wall when being provided with for assembling, the dropout projection 12 entered in described sliding sleeve 2 for making Elastic buckle 32 on described needle body 3 depart from from described sliding sleeve 2 rear wall when described sliding sleeve 2 front end is set back in described housing 1 is provided with in described housing 1, be connected with between described needle body 3 and described housing 1 intracavity bottom and move forward to make described syringe needle 31 to go out spring 4 housing 1 from terminal spine before described sliding sleeve 2 for promoting described needle body 3.
The novel front pressure type blood lancet device of one as above, described needle body 3 wall is provided with fixture block 33, and described housing 1 intracavity bottom is provided with draw-in groove 13, and described spring 4 one end is stuck in outside described fixture block 33 and the other end is stuck in described draw-in groove 13.
The novel front pressure type blood lancet device of one as above, described dropout projection 12 is provided with the slide guide face 121 being convenient to make described Elastic buckle 32 easily enter in described sliding sleeve 2 from the disengaging of sliding sleeve 2 rear wall when described sliding sleeve 2 front end is set back in described housing 1.
The novel front pressure type blood lancet device of one as above, described Elastic buckle 32 is two, and its circumference array is arranged on described needle body 3, and the dropout projection 12 in described housing 1 corresponds to two, and each dropout protruding 12 is provided with slide guide face 121.
The novel front pressure type blood lancet device of one as above, described blood lancet device also includes needle guard 5, and described needle guard 5 penetrates from described sliding sleeve 2 front end and is set in described syringe needle 31.
Compared with prior art, the beneficial effects of the utility model are:
1, this case building block is few, easy to assembly, housing cavity is provided with the first guide and limit groove, be convenient to moving axially of sliding sleeve, the second guide and limit groove is provided with in sliding sleeve, be convenient to moving axially of needle body, during assembling, on needle body, Elastic buckle is against on sliding sleeve rear wall, under the action of the spring, sliding sleeve front end is stretched out outside housing, during use, firmly housing is pressed to human body skin direction, Elastic buckle is threaded off under the convex role of dropout, needle body moves forward rapidly under the action of the spring, syringe needle goes out from terminal spine before sliding sleeve, thus puncture human body skin realization blood sampling, then needle body drives needle retractable to enter in described sliding sleeve under spring action, its use safety, separately, during the assembling of this blood lancet device, spring does not need precommpression, its good stability.
2, needle body wall is provided with fixture block, draw-in groove is provided with bottom described housing cavity, between fast described spring being connected to bottom needle body and housing cavity when being convenient to assembling, so, have pulling force effect to described needle body when described needle body being had to thrust and stretches when described spring-compressed, the thorn being convenient to syringe needle goes out and bounces back.
3, in housing, dropout projection is provided with slide guide face, be convenient to make when described sliding sleeve front end is set back in described housing Elastic buckle on needle body depart from from described sliding sleeve rear wall under the effect of slide guide face and enter in described sliding sleeve, ensure that described needle body can move forward by relatively described sliding sleeve.
4, Elastic buckle is two, and its circumference array is arranged on described needle body, so, is symmetrical arranged the balance strengthening needle body.
[accompanying drawing explanation]
Fig. 1 is blast diagram of the present utility model.
Fig. 2 is case fragmentation diagram of the present utility model.
Fig. 3 is one of assembling diagram of the present utility model.
Fig. 4 is assembling diagram two of the present utility model.
Fig. 5 is A-A place sectional view in Fig. 4.
[detailed description of the invention]
This utility model feature and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, so that the understanding of technical staff of the same trade:
As Figure 1-5, a kind of novel front pressure type blood lancet device, include housing 1, sliding sleeve 2, and needle body 3, described housing 1 comprises the upper half shell 101 and lower half shell 102 that fasten, described needle body 3 front end is provided with syringe needle 31, described housing 1 inner chamber is provided with for moving axially and the first guide and limit groove 11 outside housing 1 can be stretched out in sliding sleeve 2 front end for described sliding sleeve 2, the second guide and limit groove 21 for moving axially for described needle body 3 is provided with in described sliding sleeve 2, described needle body 3 is against the Elastic buckle 32 on described sliding sleeve 2 rear wall when being provided with for assembling, the dropout projection 12 entered in described sliding sleeve 2 for making Elastic buckle 32 on described needle body 3 depart from from described sliding sleeve 2 rear wall when described sliding sleeve 2 front end is set back in described housing 1 is provided with in described housing 1, be connected with between described needle body 3 and described housing 1 intracavity bottom and move forward to make described syringe needle 31 to go out spring 4 housing 1 from terminal spine before described sliding sleeve 2 for promoting described needle body 3.
As mentioned above, in the present embodiment, described needle body 3 wall is provided with fixture block 33, and described housing 1 intracavity bottom is provided with draw-in groove 13, and described spring 4 one end is stuck in outside described fixture block 33 and the other end is stuck in described draw-in groove 13.
As mentioned above, have pulling force effect to described needle body 3 when described needle body 3 being had to thrust and stretches when described spring 4 compresses, the thorn being convenient to syringe needle 31 goes out and bounces back.
As mentioned above, in the present embodiment, described projection 12 of threading off is provided with the slide guide face 121 being convenient to make described Elastic buckle 32 easily enter in described sliding sleeve 2 from the disengaging of sliding sleeve 2 rear wall when described sliding sleeve 2 front end is set back in described housing 1, so, ensure that described needle body 3 can move forward by relatively described sliding sleeve 2.
As mentioned above, in the present embodiment, described Elastic buckle 32 is two, its circumference array is arranged on described needle body 3, and the dropout projection 12 in described housing 1 corresponds to two, and each dropout protruding 12 is provided with slide guide face 121, so, the balance strengthening needle body 3 is symmetrical arranged.
As mentioned above, this case blood lancet device also includes needle guard 5, and described needle guard 5 penetrates from described sliding sleeve 2 front end and is set in described syringe needle 31.
As mentioned above, as shown in Figure 3, this case building block is few, fast easy to assembly, and concrete assembling process is as follows:
Described needle body 3 first slips into the second guide and limit groove 21 of described sliding sleeve 2 from rear end by user, Elastic buckle 32 on needle body 3 is made to be against on sliding sleeve 2 rear wall, then be contained on the first guide and limit groove 11 of lower half shell 102 after spring 4 on the cover of needle body 3 rear end, fixture block 33 on needle body 3 wall is blocked in spring 4 one end and the other end is stuck in the draw-in groove 13 of lower half shell 102 rear end, under the active force of spring 4, sliding sleeve 2 front end is stretched out lower half shell 102 from described first guide and limit groove 11 front end, upper half shell 101 be engaged on lower half shell 102 and load onto needle guard 5, thus complete whole assembling process.
As mentioned above, the operation principle of this case and use procedure as follows:
During use, described needle guard 5 is first extracted out from described sliding sleeve 2 front end by user, then described sliding sleeve 2 front end is against on human body skin, firmly housing 1 is pressed to human body skin direction gently, thus make described sliding sleeve 2 drive the relatively described housing 1 of described needle body 3 to move backward, spring 4 is compressed, when Elastic buckle 32 on needle body 3 run into described dropout protruding 12 time, Elastic buckle 32 departs from from described sliding sleeve 2 rear wall and enters in described sliding sleeve 2, needle body 3 moves forward rapidly under described spring 4 active force, syringe needle 21 goes out from terminal spine before sliding sleeve 2, thus puncture human body skin realization blood sampling, needle body 3 drives syringe needle 21 to be set back in described sliding sleeve 2 under spring 4 active force.
As mentioned above, what this case was protected is a kind of novel front pressure type blood lancet device, and its structure is simple and easy to realize, and building block is few, easy to assembly, use safety, and all technical schemes identical or close with this case structure all should be shown for falling in the protection domain of this case.
Claims (5)
1. a novel front pressure type blood lancet device, it is characterized in that including housing (1), sliding sleeve (2), and needle body (3), described housing (1) comprises the upper half shell (101) and lower half shell (102) that fasten, described needle body (3) front end is provided with syringe needle (31), described housing (1) inner chamber is provided with for moving axially and housing (1) the first guide and limit groove (11) outward can be stretched out in sliding sleeve (2) front end for described sliding sleeve (2), the second guide and limit groove (21) for moving axially for described needle body (3) is provided with in described sliding sleeve (2), described needle body (3) is against the Elastic buckle (32) on described sliding sleeve (2) rear wall when being provided with for assembling, the dropout projection (12) entered in described sliding sleeve (2) for making the upper Elastic buckle (32) of described needle body (3) depart from from described sliding sleeve (2) rear wall when described sliding sleeve (2) front end is set back in described housing (1) is provided with in described housing (1), be connected with between described needle body (3) and described housing (1) intracavity bottom and move forward to make described syringe needle (31) go out spring (4) housing (1) from described sliding sleeve (2) front terminal spine for promoting described needle body (3).
2. the novel front pressure type blood lancet device of one according to claim 1, it is characterized in that described needle body (3) wall is provided with fixture block (33), described housing (1) intracavity bottom is provided with draw-in groove (13), and described spring (4) one end is stuck in described fixture block (33) and is stuck in the other end outward in described draw-in groove (13).
3. the novel front pressure type blood lancet device of one according to claim 1, is characterized in that described thread off protruding (12) are provided with the slide guide face (121) being convenient to make described Elastic buckle (32) easily enter in described sliding sleeve (2) from the disengaging of sliding sleeve (2) rear wall when described sliding sleeve (2) front end is set back in described housing (1).
4. the novel front pressure type blood lancet device of one according to claim 3, it is characterized in that described Elastic buckle (32) is two, its circumference array is arranged on described needle body (3), dropout projection (12) in described housing (1) corresponds to two, and each dropout protruding (12) is provided with slide guide face (121).
5. the novel front pressure type blood lancet device of the one according to claim 1-4 any one, it is characterized in that described blood lancet device also includes needle guard (5), described needle guard (5) penetrates from described sliding sleeve (2) front end and is set in described syringe needle (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520433838.XU CN204744200U (en) | 2015-06-19 | 2015-06-19 | Novel preceding pressure formula blood taking needle device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520433838.XU CN204744200U (en) | 2015-06-19 | 2015-06-19 | Novel preceding pressure formula blood taking needle device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204744200U true CN204744200U (en) | 2015-11-11 |
Family
ID=54458965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520433838.XU Expired - Fee Related CN204744200U (en) | 2015-06-19 | 2015-06-19 | Novel preceding pressure formula blood taking needle device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204744200U (en) |
-
2015
- 2015-06-19 CN CN201520433838.XU patent/CN204744200U/en not_active Expired - Fee Related
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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: 20151111 Termination date: 20190619 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |