CN104958079A - Rear pressing type blood taking needle device - Google Patents
Rear pressing type blood taking needle device Download PDFInfo
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- CN104958079A CN104958079A CN201510349580.XA CN201510349580A CN104958079A CN 104958079 A CN104958079 A CN 104958079A CN 201510349580 A CN201510349580 A CN 201510349580A CN 104958079 A CN104958079 A CN 104958079A
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- button
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- needle body
- pressing
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Abstract
The invention discloses a rear pressing type blood taking needle device. The rear pressing type blood taking needle device comprises a shell, a needle body and a button, wherein the middle-front end of the inner cavity of the shell is provided with a needle body guiding groove, the rear end of the inner cavity of the shell is provided with a button guiding groove, a needle head is arranged at the front end of the needle body, a spring is arranged between the button and the needle body, an elastic spreading arm spreading toward the front end of the inner cavity of the shell is arranged on the needle body, a first limiting step for limiting the top of the elastic spreading arm is arranged in the shell, a push rod enabling the elastic spreading arm to be separated from the first limiting step is arranged on the button, the position, at the front end of the first limiting step, in the shell is further provided with a guiding inclined plane enabling the elastic spreading arm to be folded and store energy, an elastic buckle is also arranged on the button, and a first button placement hole matched with the elastic buckle for buckling, a second limiting step for conducting pressing stroke limiting on the button and a second button placement hole matched with the elastic buckle for buckling after pressing the button are also arranged in the shell in the assembly of the button. According to the rear pressing type blood taking needle device, the structure is simple and easy to achieve, constituent elements are less, the installation is convenient, limiting is conducted on the pressing stroke, the use is convenient, and safety and reliability are achieved.
Description
[technical field]
The present invention relates to a kind of rear pressing blood lancet device.
[background technology]
At present, hospital all requires to use the disposable blood taking needle of syringe needle auto retractable after blood sampling, to avoid between patient cross infection and to prevent medical personnel from being pricked by mistake.The common disposable blood taking needle in market is of a great variety, and building block is numerous, and assembling is inconvenient.
Therefore, be necessary to solve as above problem.
[summary of the invention]
Instant invention overcomes the deficiency of above-mentioned technology, provide a kind of rear pressing blood lancet device, its structure is simple and easy to realize, and building block is few, easy for installation, and presses stroke limited location and button bit, easy to use safe and reliable.
For achieving the above object, present invention employs following technical proposal:
Pressing blood lancet device after a kind of, include housing 1, needle body 2, and button 3, in described housing 1 inner chamber, front end is provided with needle guiding groove 11 for moving axially for described needle body 2 and rear end and is provided with button gathering sill 12 for moving axially for described button 3, described needle body 2 front end is provided with syringe needle 21, when being provided with between described button 3 and described needle body 2 for pressing described button 3 to use blood lancet device, described in resiliency urged, needle body 2 makes the spring 4 that on it, syringe needle 21 stings out to housing 1 from described needle guiding groove 11 front end, described needle body 2 is provided with the elasticity exhibition arm 22 launched to described housing 1 inner chamber front end, be provided with for carrying out the first spacing limited step 13 to described elasticity exhibition arm 22 top in described housing 1, press from rear side top described elasticity to open up arm 22 when described button 3 is provided with for moving to described button gathering sill 12 front end and depart from the push rod 31 of described first limited step 13 to make its top inwardly move, also be provided with for making described elasticity exhibition arm 22 draw energy storage in when described needle body 2 moves forward so that the guiding surface 14 bounced back after described syringe needle 21 stings out in the housing 1 of described first limited step 13 front end, described button 3 is also provided with Elastic buckle 32, the first button bit hole 15 for coordinating button bit with described Elastic buckle 32 when assembling described button 3 is also provided with in described housing 1, for pressing the second limited step 16 of stroke limit to described button 3, and for coordinating the second button bit hole 17 of button bit after pressing described button 3 with described Elastic buckle 32.
Pressing blood lancet device after one as above, described first limited step 13 is provided with the gap slot 131 for passing through for described push rod 31 top.
Pressing blood lancet device after one as above, described first limited step 13 is two, and its circumference array is arranged in described housing 1, and each first limited step 13 is provided with gap slot 131, described elasticity exhibition arm 22 is two, and its circumference array is arranged on described needle body 2.
Pressing blood lancet device after one as above, described push rod 31 top is provided with to be convenient to inwardly depart from the arcwall face 311 of described first limited step 13 to top pressure described elasticity exhibition arm 22 during reach.
Pressing blood lancet device after one as above, described Elastic buckle 32 is arranged on the push rod 31 of described button 3.
Pressing blood lancet device after one as above, described blood lancet device also includes needle guard 5, and described needle guard 5 penetrates from described housing 1 front end and is set in described syringe needle 21.
The invention has the beneficial effects as follows:
1, this case building block is few, first limited step is set in housing to carry out initially spacing to needle body and upper elasticity exhibition arm thereof, with arrange the first button bit hole with assemble described button time and described resilient snap fitment button bit, it is easily easy for installation, user presses described button can make described elasticity exhibition arm break away from the first limited step so that described needle body moves forward under the force of a spring fast, thus make syringe needle sting out outside housing, it is easy to use, then under the tension force effect of elasticity exhibition arm, needle body adverse movement, needle retractable enters in described housing, it is safe and reliable, separately, after using, on described button, Elastic buckle button bit is in the second button bit hole, used again to prevent blood lancet device, separately, during the assembling of this blood lancet device, spring does not need precommpression, its good stability.It is exactly that active force is less that this case blood collection procedure is directly experienced to user, speed, and experience is better compared with the blood taking needle of prior art.
2, the first limited step is provided with the gap slot for passing through for described push rod top, it ensures that push rod top has enough strokes to make elasticity open up arm top and inwardly moves and depart from described first limited step when pressing from rear side top described elasticity to open up arm, ensures that described needle body can travel forward.
3, the first limited step is two, and its circumference array is arranged in described housing, and each first limited step is provided with gap slot, described elasticity exhibition arm is two, its circumference array is arranged on described needle body, so, is symmetrical arranged the balance strengthening blood lancet device.
4, push rod top is provided with arcwall face, is convenient to inwardly depart from described first limited step to top pressure described elasticity exhibition arm during reach.
[accompanying drawing explanation]
Fig. 1 is blast diagram of the present invention.
Fig. 2 is housing of the present invention.
Fig. 3 is A-A directional profile diagram in Fig. 2.
Fig. 4 is the installation diagram after inventive shell being equipped with needle body, button and button.
Fig. 5 is B-B directional profile diagram in Fig. 4.
[detailed description of the invention]
Be described in further detail below in conjunction with accompanying drawing and embodiments of the present invention:
As Figure 1-5, pressing blood lancet device after a kind of, include housing 1, needle body 2, and button 3, in described housing 1 inner chamber, front end is provided with needle guiding groove 11 for moving axially for described needle body 2 and rear end and is provided with button gathering sill 12 for moving axially for described button 3, described needle body 2 front end is provided with syringe needle 21, when being provided with between described button 3 and described needle body 2 for pressing described button 3 to use blood lancet device, described in resiliency urged, needle body 2 makes the spring 4 that on it, syringe needle 21 stings out to housing 1 from described needle guiding groove 11 front end, described needle body 2 is provided with the elasticity exhibition arm 22 launched to described housing 1 inner chamber front end, be provided with for carrying out the first spacing limited step 13 to described elasticity exhibition arm 22 top in described housing 1, press from rear side top described elasticity to open up arm 22 when described button 3 is provided with for moving to described button gathering sill 12 front end and depart from the push rod 31 of described first limited step 13 to make its top inwardly move, also be provided with for making described elasticity exhibition arm 22 draw energy storage in when described needle body 2 moves forward so that the guiding surface 14 bounced back after described syringe needle 21 stings out in the housing 1 of described first limited step 13 front end, described button 3 is also provided with Elastic buckle 32, the first button bit hole 15 for coordinating button bit with described Elastic buckle 32 when assembling described button 3 is also provided with in described housing 1, for pressing the second limited step 16 of stroke limit to described button 3, and for coordinating the second button bit hole 17 of button bit after pressing described button 3 with described Elastic buckle 32.
First limited step 13 as above is provided with the gap slot 131 for passing through for described push rod 31 top, it ensures that push rod 31 top has enough strokes to make elasticity open up arm 22 top and inwardly moves and depart from described first limited step 13 when pressing from rear side top described elasticity to open up arm 22, ensures that described needle body 2 can travel forward.
As mentioned above, in the present embodiment, described first limited step 13 is two, its circumference array is arranged in described housing 1, each first limited step 13 is provided with gap slot 131, and described elasticity exhibition arm 22 is two, and its circumference array is arranged on described needle body 2, so, the balance strengthening blood lancet device is symmetrical arranged.
As mentioned above, this case push rod 31 top is provided with arcwall face 311, and it is convenient to inwardly depart from described first limited step 13 to top pressure described elasticity exhibition arm 22 during reach.
As mentioned above, Elastic buckle 32 described in this case is arranged on the push rod 31 of described button 3.
As mentioned above, this case blood lancet device also includes needle guard 5, and described needle guard 5 penetrates from described housing 1 front end and is set in described syringe needle 21.
As mentioned above, this case building block is few, fast easy to assembly, during assembling, described needle body 2 is first slipped in described needle guiding groove 11 along described button gathering sill 12 by user, then load spring 4 and button 3 successively, wherein, on button 3, Elastic buckle 32 button bit is on described first button bit hole 15, finally described needle guard 5 penetrated from described housing 1 front end and be set in described syringe needle 21, thus completing whole assembling process.
As mentioned above, the operation principle of this case and process as follows:
During use, described needle guard 5 is first extracted out from described housing 1 front end by user, described housing 1 front end is gently against on human body skin, finger presses described button 3 until it is decontroled after running into described second limited step 16, at this moment, described button 3 upper push-rod 31 moves forward top pressure described elasticity exhibition arm 22 and departs from described first limited step 13 to make its top inwardly move, described needle body 2 moves forward fast and makes described syringe needle 21 sting out outside described housing 1 under the effect of described spring 4, thus puncture human body skin, while described needle body 2 reach, described elasticity exhibition arm 22 draws energy storage under the effect of described guiding surface 14, after described syringe needle 21 completes blood sampling, the tension force of described elasticity exhibition arm 22 reacts on described guiding surface 14 and makes syringe needle 21 on needle body 2 be set back in described housing 1, until described elasticity exhibition arm 22 is limited in described first limited step 13 rear end, and under the counteracting force of described spring 4, described Elastic buckle 32 with described button 3 slightly to after move and button bit in described second button bit hole 17, used again to prevent blood lancet device.
As mentioned above, what this case was protected is a kind of rear pressing blood lancet device, 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 (6)
1. pressing blood lancet device after a kind, it is characterized in that including housing (1), needle body (2), and button (3), in described housing (1) inner chamber, front end is provided with for being provided with the button gathering sill (12) moved axially for the described button of confession (3) for described needle body (2) the needle guiding groove (11) that moves axially and rear end, described needle body (2) front end is provided with syringe needle (21), the spring (4) syringe needle on it (21) being stung out to housing (1) for pressing needle body (2) described in resiliency urged when described button (3) uses blood lancet device from described needle guiding groove (11) front end is provided with between described button (3) and described needle body (2), described needle body (2) is provided with elasticity exhibition arm (22) launched to described housing (1) inner chamber front end, be provided with for carrying out spacing the first limited step (13) to described elasticity exhibition arm (22) top in described housing (1), press from rear side top described elasticity to open up arm (22) when described button (3) is provided with for moving to described button gathering sill (12) front end and depart from the push rod (31) of described first limited step (13) to make its top inwardly move, also be provided with in the housing (1) of described first limited step (13) front end and draw energy storage in so that sting out the guiding surface (14) of rear retraction at described syringe needle (21) for making when described needle body (2) moves forward described elasticity open up arm (22), described button (3) is also provided with Elastic buckle (32), the first button bit hole (15) for coordinating button bit with described Elastic buckle (32) when assembling described button (3) is also provided with in described housing (1), for pressing second limited step (16) of stroke limit to described button (3), and in the second button bit hole (17) of pressing described button (3) and coordinate with described Elastic buckle (32) afterwards button bit.
2. pressing blood lancet device after one according to claim 1, is characterized in that described first limited step (13) is provided with the gap slot (131) for passing through for described push rod (31) top.
3. pressing blood lancet device after one according to claim 2, it is characterized in that described first limited step (13) is two, its circumference array is arranged in described housing (1), each first limited step (13) is provided with gap slot (131), described elasticity exhibition arm (22) is two, and its circumference array is arranged on described needle body (2).
4. pressing blood lancet device after one according to claim 1, is characterized in that described push rod (31) top is provided with and is convenient to inwardly depart from the arcwall face (311) of described first limited step (13) to pressure described elasticity exhibition arm (22) in top during reach.
5. pressing blood lancet device after one according to claim 1, is characterized in that described Elastic buckle (32) is arranged on the push rod (31) of described button (3).
6. pressing blood lancet device after the one according to claim 1-5 any one, it is characterized in that described blood lancet device also includes needle guard (5), described needle guard (5) penetrates from described housing (1) front end and is set in described syringe needle (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510349580.XA CN104958079A (en) | 2015-06-19 | 2015-06-19 | Rear pressing type blood taking needle device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510349580.XA CN104958079A (en) | 2015-06-19 | 2015-06-19 | Rear pressing type blood taking needle device |
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| Publication Number | Publication Date |
|---|---|
| CN104958079A true CN104958079A (en) | 2015-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510349580.XA Pending CN104958079A (en) | 2015-06-19 | 2015-06-19 | Rear pressing type blood taking needle device |
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| CN (1) | CN104958079A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007050528A1 (en) * | 2005-10-25 | 2007-05-03 | Bayer Healthcare Llc | Single use lancing device |
| CN201008557Y (en) * | 2007-02-28 | 2008-01-23 | 东莞和汇电子有限公司 | Disposal blood taking needle for medical purpose |
| CN201303942Y (en) * | 2006-07-18 | 2009-09-09 | 欧文蒙福德有限公司 | Skin puncturing device |
| CN103371832A (en) * | 2012-04-26 | 2013-10-30 | 上海宝尔生贸易有限公司 | Disposable blood taking needle |
| CN204734492U (en) * | 2015-06-19 | 2015-11-04 | 中山瑞福医疗器械科技有限公司 | Novel pressing blood taking needle in back device |
-
2015
- 2015-06-19 CN CN201510349580.XA patent/CN104958079A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007050528A1 (en) * | 2005-10-25 | 2007-05-03 | Bayer Healthcare Llc | Single use lancing device |
| CN201303942Y (en) * | 2006-07-18 | 2009-09-09 | 欧文蒙福德有限公司 | Skin puncturing device |
| CN201008557Y (en) * | 2007-02-28 | 2008-01-23 | 东莞和汇电子有限公司 | Disposal blood taking needle for medical purpose |
| CN103371832A (en) * | 2012-04-26 | 2013-10-30 | 上海宝尔生贸易有限公司 | Disposable blood taking needle |
| CN204734492U (en) * | 2015-06-19 | 2015-11-04 | 中山瑞福医疗器械科技有限公司 | Novel pressing blood taking needle in back device |
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Application publication date: 20151007 |
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| RJ01 | Rejection of invention patent application after publication |