CN2482966Y - Cap-covering type safety and automatic blood-sampling needle - Google Patents
Cap-covering type safety and automatic blood-sampling needle Download PDFInfo
- Publication number
- CN2482966Y CN2482966Y CN 01244520 CN01244520U CN2482966Y CN 2482966 Y CN2482966 Y CN 2482966Y CN 01244520 CN01244520 CN 01244520 CN 01244520 U CN01244520 U CN 01244520U CN 2482966 Y CN2482966 Y CN 2482966Y
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- needle
- blood taking
- taking needle
- sleeve
- ejection
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Abstract
A cover cap type safety automatic blood taking needle includes a shell <1>, a blood collection needle<2>, and a spring<3>. The shell<1> is provided with an ejection cavity <4>, and the blood collection needle <2> and the spring <3> are arranged at the ejection cavity <4> and is connected at the ejection direction to form an elastic sliding structure. The shell <1> is provided with a needle out hole <5> with the same ejection direction, and the blood collection needle <2> and the side direction of the shell <1> is provided with a clamping ejection structure at the spring compressing route. The utility model is characterized in that: the head of the blood collection needle <2> is provided with a protection handle sleeve <6>, and one end of the protection handle sleeve <6> is sleeved at the head part of the blood collection needle <2>, while another end thereof extends from the needle out hole <5>. The utility model is characterized in that the utility model changes the one body structure design of the former needle handle, needle cover including the needle body and the needle tip to create a new structure, which shows a new technology idea and creation, and makes construction for the technology improvement of the mini-size blood collection needle of the self-bringing ejection structure.
Description
This utility model relates to a kind of medical blood-sampling needle device, relates in particular to a kind of " mini " disposable safe automatic blood-taking needle device that carries ejection structure.
" mini " blood taking needle that carries ejection structure is as a kind of new construction blood sampling instrument, and, safety small and exquisite, convenient, fast with it is the favor that characteristic is subjected to many medical personnel and patient very soon.United States Patent (USP) has once been announced a name on January 30th, 1996 and has been called " blood sampling device (Blood Sampling Device) ", and the patent No. is the patent of invention of US5487748.This patent is the theme with the blood taking needle device and discloses a kind of technical scheme that carries " mini " blood taking needle of ejection structure, its structure is mainly by housing, blood taking needle and spring are formed, housing constitutes an ejection chamber, blood taking needle and spring place in the ejection chamber and connect into the Elastic Sliding structure on direction of ejections, housing is provided with the needle outlet consistent with direction of ejection, blood taking needle is by needle body, needle point, needle handle and pin lid are formed, needle body is ensconced in the needle handle, during needle point covers with the plant pin, needle handle and pin cover the structure that fuses, needle handle is placed in the ejection chamber, the pin lid is a rod member and stretches out from needle outlet, the side direction of needle handle is provided with a projection, and corresponding shell side direction cantilever colludes, and projection is colluded to cooperate to constitute to block with cantilever and penetrated structure.Advance pin lid compression spring before using earlier and impel projection and cantilever to collude locking, then rotate the pin lid and force the pin lid to separate, extract the pin lid then and expose needle point and can use with the fracture of needle handle junction.Technique scheme is simple in structure, compact, easy to operate, has technique effect preferably undoubtedly, but see from the blood taking needle structure and also to have following defective: 1, needle handle and pin lid fuses after the structure, just can extract the pin lid after need twisting off, and in the process of rotation pin lid, cause needle body loosening easily, even connect the phenomenon that needle body is extracted together.Its reason is that needle body is generally cylinder, and needle point is made up of many corner angle, although the section of connecing is shorter between pin lid and the needle point company, its frictional force is often greater than the frictional force between needle handle and the needle body.2, another key factor of above-mentioned generation band pin phenomenon is the material and the technology of needle handle and pin lid, if assurance product quality, avoid taking place band pin situation and occur, then material and technology have been proposed the more requirement of Gao Gengyan, correspondingly pay more cost from manufacturing angle.
This utility model purpose provides a kind of novel capping type safety automatic blood-taking needle.
For achieving the above object; the technical solution adopted in the utility model is: a kind of capping type safety automatic blood-taking needle; comprise housing, blood taking needle and spring; be provided with ejection chamber in the housing; blood taking needle and spring place in the ejection chamber and connect into the Elastic Sliding structure on direction of ejections; housing is provided with the needle outlet consistent with direction of ejection; blood taking needle and case side between on the spring compressed path, be provided with card and penetrate structure; the head of blood taking needle is provided with the protection sleeve; one end of protection sleeve is socketed in the blood taking needle head, and the other end stretches out from needle outlet.
In the technique scheme, described " sleeve " has two kinds of long handle and short handles, and long handle is meant and adopts pushing sleeve mode to compress spring and make card penetrate that structure locks; Short handle is meant and adopts drawing mode compression spring and make card penetrate that structure locks that its drawing structure is not a sleeve, and can be a pull bar that is located at the blood taking needle afterbody.
In the technique scheme, described blood taking needle head is provided with a boss, and needle point stretches out from boss central authorities, and sleeve is enclosed within on the boss.Boss can be round platform, frustum or square platform, also can be other structure, but this boss must be complementary with the sleeve mantle cavity, makes socket reliable and be convenient to extract.
In the technique scheme,, establish the protectiveness projection on the sleeve outer rim of described ejection chamber in order to reach the purpose of protection needle point preferably, the corresponding breach that has on the needle outlet, convex top is greater than the needle outlet radius, less than the height of breach.The projection alignment notch is inserted from needle outlet then during the assembling sleeve, and sleeve is socketed in the blood taking needle head, rotates to an angle at last to make it and can not arbitrarily withdraw from by projection locking sleeve.In order better to reach the purpose of protection needle point, this scheme is specifically as follows: described boss is a rotation body structure, and projection is symmetrically arranged two parallel anticreep door bolts, and anticreep is latched in and axially stretches out the sleeve end face; Corresponding blood taking needle head is provided with two rotation side blocks, two side blocks by with the contacting and deviate from limit rotation with sleeve in a fixed range of anticreep door bolt external part, as be limited in 90 ° of scopes.
In the technique scheme, described " card is penetrated structure " is the general name that locks and launch the blood taking needle structure behind the compression spring.Be specifically as follows following structure: form by extended elastic arm A, elastic arm B from housing and the bayonet socket that is located on the blood taking needle, elastic arm A and bayonet socket are located on the correspondence position of the same side, elastic arm A and bayonet fittings constitute latch-up structure, elastic arm B is located at the opposite side of housing as emitting structural, and the extension by crossing ejection chamber is near the cantilever end of elastic arm A.Also other scheme that can provide for prior art.
After making blood taking needle launch once, cease to be in force automatically, get rid of reusable probability, on the basis of technique scheme, can set up the overhead kick chocking construction, described overhead kick chocking construction specifically can be made of the stop mouth cooperation that is located at the elastic arm C on the blood taking needle and be located on the housing, elastic arm C and stop mouth are positioned on the correspondence position of homonymy, and its stop direction is the backhaul direction that blood taking needle launches, and the stop mouth is located on the path of backhaul.
This utility model operation principle is: referring to accompanying drawing 1, the head of sleeve is aimed at needle outlet (wherein anticreep door bolt alignment notch) insert ejection chamber, sleeve is socketed on the boss of blood taking needle head, half-twist then, this moment, the rear end face of anticreep door bolt left gap position, just in time play the effect that prevents that sleeve from withdrawing from, see accompanying drawing 2 and accompanying drawing 3.During use, a hands pinches housing, another hand push pressure handle cover, blood taking needle slided backward in ejection chamber and compressed spring simultaneously this moment, when the bayonet socket on the blood taking needle moves to elasticity A cantilever end, because elastic force effect cantilever end falls into bayonet socket, thereby make blood taking needle enter lock-out state, see accompanying drawing 4.Extract sleeve then and make this utility model be in battery, see accompanying drawing 5.Pressing elastic arm B, the extension roof pressure elastic arm A on it finally makes the cantilever end of elastic arm A break away from bayonet socket, then enters emission state, and this moment, blood taking needle rushed at the needle outlet end rapidly under the elastic force effect of spring, and needle point passes needle outlet and stabs blood sampling site.In the ejection process, elastic arm C crosses the stop mouth, but in the backhaul because the guiding function of elastic arm C can be inserted in the stop mouth dexterously, finally cause the protected property of blood taking needle to be locked in this position, can't reuse.For safer, after the use sleeve of extracting is put in back on the blood taking needle.
Because the technique scheme utilization, this utility model compared with prior art has following advantage:
1, because this utility model is provided with the protection sleeve at the head of blood taking needle; one end of protection sleeve is socketed in the blood taking needle head; the other end stretches out from needle outlet; sleeve is not directly to be enclosed within on the needle point; but on the boss of supporting needle point; when rotating and extracting sleeve, can not run into needle point like this, not only protect needle point preferably but also overcome the deficiencies in the prior art, thereby obtained good effect.
2, this utility model has changed the integrative-structure design of original needle handle, pin lid envelope needle body and needle point, createed a kind of brand-new structure, a kind of new technical conceive and inventive features have been embodied, for positive contribution has been made in the technological progress of the mini blood taking needle device that carries ejection structure.
3, this utility model overhead kick chocking construction is skillfully constructed, and ceases to be in force automatically after can making blood taking needle launch once on the effect, has got rid of the reusable probability of disposable blood taking needle, has realized " disposable use " truly.
4, this utility model card is penetrated the novel structure uniqueness, reasonable in design, and reliable operation has than the highland practical value.
Accompanying drawing 1 is in the cutaway view of released state for this utility model embodiment sleeve and blood taking needle;
Accompanying drawing 2 is in the cutaway view of confined state for this utility model embodiment sleeve and blood taking needle;
Accompanying drawing 3 is the cutaway view of this utility model embodiment sleeve half-twist state;
The cutaway view that accompanying drawing 4 advances blood taking needle to be in the lock state for this utility model embodiment sleeve;
Accompanying drawing 5 is extracted the cutaway view that is in battery behind the sleeve for this utility model embodiment;
Accompanying drawing 6 is the cutaway view of this utility model embodiment ejection status;
Accompanying drawing 7 enters the cutaway view of arrested state for this utility model embodiment launches retraction;
Accompanying drawing 8 is the right view of this utility model sleeve;
Accompanying drawing 9 is the left view of this utility model blood taking needle.
Wherein: [1], housing; [2], blood taking needle; [3], spring; [4], ejection chamber; [5], needle outlet; [6], sleeve; [7], boss; [8], needle point; [9], breach; [10], anticreep door bolt; [11], side block; [12], elastic arm A; [13], elastic arm B; [14], bayonet socket; [15], elastic arm C; [16], stop mouth; [17], card; [18], draw-in groove.
Below in conjunction with drawings and Examples this utility model is further described:
Embodiment, shown in accompanying drawing 1～accompanying drawing 9, a kind of capping type safety automatic blood-taking needle is made up of housing [1], blood taking needle [2], sleeve [6] and spring [3].
Housing [1] is divided into up and down two, and connects into overall structure by hole set on the contact surface, latch structure.Be provided with an ejection chamber [4] in the housing [1], blood taking needle [2] and spring [3] place in the ejection chamber [4], spring [3] is positioned at blood taking needle [2] rear, the head of spring [3] is stuck in the draw-in groove [18] of blood taking needle [2] afterbody, the trailer card of spring [3] connects into the Elastic Sliding structure with this on direction of ejection on the card [17] of housing [1].One end of housing [1] is provided with the needle outlet consistent with direction of ejection [5], and needle outlet [5] is gone up symmetry and had two breach [9].Blood taking needle [2] head is provided with a cylindrical boss [7], and needle point [8] stretches out from boss [7] central authorities, and boss [7] side is provided with two rotation side blocks [11].Sleeve [6] is a member structure; front end is provided with deep hole; the rear end empennage; symmetrically arranged two parallel anticreep door bolts [10] on the outer rim of front end; its top is greater than needle outlet [5] radius; height less than breach [9]; anticreep door bolt [10] is axially stretching out sleeve [6] end face; the front portion of sleeve [6] is passed needle outlet [5] and is enclosed within on the boss [7]; two side blocks [11] by with the contacting and deviate from limit rotation with sleeve [6] in 90 ° of scopes of anticreep door bolt [10] external part; the rear end of anticreep door bolt [10] cooperates with needle outlet [5] can prevent that sleeve [6] from arbitrarily withdrawing from, and an end of protection sleeve [6] is socketed in blood taking needle [2] head, and the other end stretches out from needle outlet [5].
On the spring compressed path, be provided with card between blood taking needle [2] and housing [1] side direction and penetrate structure, be provided with the overhead kick chocking construction on the backhaul pathways launching.
Card is penetrated structure by go up extended elastic arm A[12 from housing [1]], elastic arm B[13] and the bayonet socket [14] that is located on the blood taking needle [2] form, elastic arm A[12] and bayonet socket [14] be located on the correspondence position of bottom side, elastic arm A[12] cooperate with bayonet socket [14] and to constitute latch-up structure, elastic arm B[13] be located at housing [1] top side as emitting structural, and by two extensions of crossing ejection chamber near elastic arm A[12] cantilever end, blood taking needle [2] is inclined to one side flat structure, and the side that each extension is positioned at blood taking needle [2] forms clamp structure.
The overhead kick chocking construction is by the elastic arm C[15 that is located on the blood taking needle [2]] and the stop mouth [16] that is located on the housing [1] cooperate to constitute, elastic arm C[15] be positioned on the correspondence position of housing [1] top side with stop mouth [16], its stop direction is the backhaul direction that blood taking needle [2] launches, and stop mouth [16] is located on the path of backhaul.
Claims (5)
1; a kind of capping type safety automatic blood-taking needle; comprise housing [1]; blood taking needle [2] and spring [3]; be provided with ejection chamber [4] in the housing [1]; blood taking needle [2] and spring [3] place in the ejection chamber [4] and connect into the Elastic Sliding structure on direction of ejections; housing [1] is provided with the needle outlet consistent with direction of ejection [5]; on the spring compressed path, be provided with card between blood taking needle [2] and housing [1] side direction and penetrate structure; it is characterized in that: the head of blood taking needle [2] is provided with protection sleeve [6]; one end of protection sleeve [6] is socketed in blood taking needle [2] head, and the other end stretches out from needle outlet [5].
2, blood taking needle according to claim 1 is characterized in that: described blood taking needle [2] head is provided with a boss [7], and needle point [8] stretches out from boss [7] central authorities, and sleeve [6] is enclosed within on the boss [7].
3, blood taking needle according to claim 2 is characterized in that: establish the protectiveness projection on sleeve [6] outer rim of described ejection chamber [4], needle outlet [5] is gone up the corresponding breach [9] that has, and convex top is greater than needle outlet [5] radius, less than the height of breach [9].
4, blood taking needle according to claim 3 is characterized in that: described boss [7] is a rotation body structure, and projection is symmetrically arranged two parallel anticreep door bolts [10], and anticreep door bolt [10] is axially stretching out sleeve [6] end face; Corresponding blood taking needle [2] head is provided with two rotation side blocks [11], two side blocks [11] by with the contacting and deviate from limit rotation with sleeve [6] in a fixed range of anticreep door bolt [10] external part.
5, blood taking needle according to claim 4 is characterized in that: described fixed range is 90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01244520 CN2482966Y (en) | 2001-06-25 | 2001-06-25 | Cap-covering type safety and automatic blood-sampling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01244520 CN2482966Y (en) | 2001-06-25 | 2001-06-25 | Cap-covering type safety and automatic blood-sampling needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2482966Y true CN2482966Y (en) | 2002-03-27 |
Family
ID=33655930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01244520 Expired - Fee Related CN2482966Y (en) | 2001-06-25 | 2001-06-25 | Cap-covering type safety and automatic blood-sampling needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2482966Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100415166C (en) * | 2002-11-15 | 2008-09-03 | 生命扫描有限公司 | Cap for a dermal tissue lancing device |
| CN102028480A (en) * | 2010-12-21 | 2011-04-27 | 苏州施莱医疗器械有限公司 | Improved safe and convenient disposable automatic blood taking needle |
| CN1961828B (en) * | 2005-11-11 | 2011-07-27 | 上海宝尔生贸易有限公司分公司 | Pen cap type blood taking needle |
| CN103371832A (en) * | 2012-04-26 | 2013-10-30 | 上海宝尔生贸易有限公司 | Disposable blood taking needle |
| CN103637809A (en) * | 2007-03-07 | 2014-03-19 | 贝克顿·迪金森公司 | Needle assembly and blood collection assembly |
| CN103919562A (en) * | 2014-05-04 | 2014-07-16 | 天津华鸿科技有限公司 | Blood taking needle |
-
2001
- 2001-06-25 CN CN 01244520 patent/CN2482966Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100415166C (en) * | 2002-11-15 | 2008-09-03 | 生命扫描有限公司 | Cap for a dermal tissue lancing device |
| CN1961828B (en) * | 2005-11-11 | 2011-07-27 | 上海宝尔生贸易有限公司分公司 | Pen cap type blood taking needle |
| CN103637809A (en) * | 2007-03-07 | 2014-03-19 | 贝克顿·迪金森公司 | Needle assembly and blood collection assembly |
| CN105455827A (en) * | 2007-03-07 | 2016-04-06 | 贝克顿·迪金森公司 | Safety blood collection assembly with indicator |
| CN103637809B (en) * | 2007-03-07 | 2017-04-12 | 贝克顿·迪金森公司 | Needle assembly and blood collection assembly |
| CN102028480A (en) * | 2010-12-21 | 2011-04-27 | 苏州施莱医疗器械有限公司 | Improved safe and convenient disposable automatic blood taking needle |
| CN103371832A (en) * | 2012-04-26 | 2013-10-30 | 上海宝尔生贸易有限公司 | Disposable blood taking needle |
| CN103919562A (en) * | 2014-05-04 | 2014-07-16 | 天津华鸿科技有限公司 | Blood taking needle |
| CN103919562B (en) * | 2014-05-04 | 2016-04-20 | 天津华鸿科技有限公司 | A kind of blood taking needle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |