CN2542206Y - Once-used safety automatic blood-taking needle - Google Patents
Once-used safety automatic blood-taking needle Download PDFInfo
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- CN2542206Y CN2542206Y CN 02221043 CN02221043U CN2542206Y CN 2542206 Y CN2542206 Y CN 2542206Y CN 02221043 CN02221043 CN 02221043 CN 02221043 U CN02221043 U CN 02221043U CN 2542206 Y CN2542206 Y CN 2542206Y
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- China
- Prior art keywords
- elastic arm
- sliding sleeve
- outer casing
- needle handle
- needle
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- Expired - Lifetime
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Abstract
The utility model relates to a destructive form one time safe automatic blood taking needle, which comprises a tube-shaped outer casing [1], an inner arranged sliding sleeve [2], a needle handle [3], and a spring [6], the sliding sleeve [2] is arranged in an opening of the tube-shaped outer casing [1], and the sliding sleeve [2] is slideably connected with the tube-shaped outer casing [1], the needle handle [3] is arranged in the sliding sleeve [2], and the needle handle [3] is slideably connected with the sliding sleeve [2]. A spring [6] is arranged between the needle handle [3] and the tube-shaped outer casing [1]. The utility model is characterized in that an elastic arm [7] is extended out of the needle handle [3], a clipping hook [8] is arranged on the elastic arm [7], a snap [9] is correspondingly arranged on the sliding sleeve [2], the needle handle [3] is prevented from upwards slipping by contacting with the snap [9] and the clipping hook [8], a stressing assemble gap [10] is arranged on the root of the elastic arm [7], an obstructing block [11] is head-on arranged on the slipping direction of the elastic arm [7] which is compression returned, a lateral component is produced after a slant face [12] on the obstructing block [11] is met and contacted with the elastic arm [7], and the elastic arm [7] is led to be unhooked and bent. The utility model utilizes the lateral component forces which are produced by the contacting of the slant face on the obstructing block and the elastic arm, on one hand, the elastic arm is led to be unhooked, on the other hand, the elastic arm is forced to be destructivity breakdown and destructed through the gap, and then one time launching and non-recover purpose are achieved.
Description
Technical field
This utility model relates to disposable medical safety automatic blood-taking needle, is specifically related to adopt destroy to block penetrate the safe automatic blood-taking needle that frame mode is realized disposable emission.This blood taking needle card is penetrated structure and is in use suffered self-destruction destruction, not reproducible use.
Background technology
In the prior art, the form of medical blood-sampling needle is varied, but from the development trend of blood taking needle, possesses miniaturization, the disposable use of safety and characteristics such as easy to operate are the targets that this product is pursued.Although most in the market small-sized blood taking needle structures are small and exquisite, easy to use, also are disposable product, itself really can reuse its structure, and such design is unsafe to medical blood-sampling needle.In order to overcome above-mentioned defective, thoroughly eradicate potential safety hazard, the applicant has submitted the utility application that a name is called " disposable safe automatic blood-taking needle " calendar year 2001 May 8 to China national Department of Intellectual Property, this patent is in bulletin mandate on February 20th, 2002, notification number is CN2477138Y, and the patent No. is ZL01237714.7.This patent provides a kind of blood taking needle with safety protection structure, its principle is on the mating surface between needle handle and the shell, tiltedly establish elastic arm for one, another is provided with the stop mouth, and elastic arm falls into the stop mouth with needle handle emission back and forms the barb chocking construction in backhaul.The characteristics of this patent are: blood taking needle ceases to be in force automatically after launching once, has thoroughly got rid of the possibility that reuses, and has eliminated the safety problem that blood taking needle is left over, and really becomes undisputed disposable products.This utility model is penetrated the structure angle according to the design principle of " primary emission, can not reuse " from destroying card, has designed the safe automatic blood-taking needle of the disposable emission of another kind of type.
Summary of the invention
For achieving the above object, the technical solution adopted in the utility model is: a kind of damage type disposable safe automatic blood-taking needle comprises:
A cylindrical outer casing, the end sealing of this cylindrical outer casing, the other end opens wide;
A sliding sleeve, this sliding sleeve is interior nested structure, and is located in cylindrical outer casing uncovered, is slidingly connected with cylindrical outer casing;
A needle handle, this needle handle is located in the sliding sleeve, and is slidingly connected with sliding sleeve, and the front portion of needle handle is provided with needle body, and corresponding sliding sleeve front portion is provided with needle outlet;
A spring, this spring are located between the blind end of needle handle and cylindrical outer casing;
Extend an elastic arm on the needle handle, elastic arm is provided with grab, and the position of sliding sleeve correspondence is provided with bayonet socket, bayonet socket and grab by contact stop needle handle in sliding sleeve to front slide; Elastic arm root side is provided with damage type stress concentration breach, head-on be provided with stopper on the glide direction of elastic arm compression backhaul, this stopper is fixedlyed connected with cylindrical outer casing, stopper is provided with meets the inclined-plane head-on, this is met inclined-plane and elastic arm head-on and meets head-on and contact the back produce cross component force on elastic arm, causes elastic arm to break off relations and fractures.
The related content and the change interpretation of technique scheme are as follows:
1, in the technique scheme, described " forward " and " front portion " are downward on the accompanying drawing direction." backhaul " is upwards on the accompanying drawing direction.
2, in the technique scheme, take place in order to guide the stress concentration phenomenon, described stress concentration breach generally adopts V-notch, and such breach is simple in structure and be easy to generate stress concentration, makes elastic arm forfeiture elasticity capacity.Certainly breach also can adopt other shape, such as square or semicircle etc.
3, in the technique scheme, thoroughly lose elasticity capacity, on the elastic arm wrap direction, should be provided with enough spaces of dodging in order to make elastic arm.
4, in the technique scheme, to slide more reliably in order making between sliding sleeve and the cylindrical outer casing, be provided with chute on the opposite flank of cylindrical outer casing, corresponding sliding sleeve side is provided with convex tendon.In order to control the sliding stroke of sliding sleeve and cylindrical outer casing, be provided with stop surface in the chute front portion, the middle part is provided with the leap muscle, and the front end of convex tendon cooperates generation to slide with stop surface spacing, and convex tendon is provided with the leap projection, and this is crossed over projection and cooperates the slip of generation obstacle with the leap muscle.
5, in the technique scheme, consider the needs of assembly structure, the blind end of described cylindrical outer casing adopts end cover structure, spring base, scotch and stopper are extended in the end cap inboard, wherein spring base is corresponding with spring, and stopper is corresponding with elastic arm, and scotch is corresponding with the sliding sleeve end face.
This utility model principle is: when utilizing the pressing blood taking needle, the relative slip of sliding sleeve and cylindrical outer casing, contact the cross component force that is produced by the inclined-plane on the stopper with elastic arm, elastic arm is broken off relations, utilize the stress concentration breach to force the self-destruction that fractures of elastic arm destructiveness on the other hand, realize primary emission, expendable purpose.
Because the technique scheme utilization, this utility model compared with prior art has following advantage:
1, this utility model is by being provided with the mode of stress concentration breach, makes elastic arm produce the destructiveness self-destruction that fractures simultaneously breaking off relations, thereby realizes primary emission, expendable effect.Its technical conceive uniqueness, the ingenious novelty of structure has technological progress significantly and unobviousness, has demonstrated fully this programme and the difference and the individual character of known technology in the past.
2, this utility model use is extremely convenient, and whole operation only needs two actions to finish, and first is to pull out block, and second is pressing.
3, in needle point was withdrawn housing automatically after this utility model used, can not expose, guarantee the safety after blood taking needle uses.
4, this utility model volume is little, compact conformation, and reliable operation is a kind of safe automatic blood-taking needle product of primary emission.
Description of drawings
Accompanying drawing 1 is this utility model example structure cutaway view (state before using);
Accompanying drawing 2 is this utility model example structure cutaway view (before the use, pulling up the block state);
Accompanying drawing 3 is this utility model example structure cutaway view (in the use, aiming at finger blood sampling site state);
Accompanying drawing 4 is this utility model example structure cutaway view (in the use, the pressing state);
Accompanying drawing 5 is this utility model example structure cutaway view (in the use, elastic arm unhook state);
Accompanying drawing 6 is this utility model example structure cutaway view (in the use, ejection status);
Accompanying drawing 7 is this utility model example structure cutaway view (using the back state);
Accompanying drawing 8 is this utility model embodiment elastic arm and fastener structure left view.
In the above accompanying drawing: 1, cylindrical outer casing; 2, sliding sleeve; 3, needle handle; 4, needle body; 5, needle outlet; 6, spring; 7, elastic arm; 8, grab; 9, bayonet socket; 10, breach; 11, stopper; 12, inclined-plane; 13, dodge the space; 14, chute; 15, convex tendon; 16, stop surface; 17, end cap; 18, spring base; 19, scotch; 20, block; 21, chute; 22, Spring Card; 23, cross over muscle; 24, cross over projection.
The specific embodiment
Below in conjunction with drawings and Examples this utility model is further described:
Embodiment: referring to accompanying drawing 1～shown in Figure 7, a kind of damage type disposable safe automatic blood-taking needle, by cylindrical outer casing 1, end cap 17, sliding sleeve 2, needle handle 3 with block a shot and 20 form.One end of cylindrical outer casing 1 opens wide with end cap 17, the other end, and spring base 18, scotch 19 and stopper 11 are extended in end cap 17 inboards.Sliding sleeve 2 is interior nested structure, and is located in cylindrical outer casing 1 uncovered, is slidingly connected with cylindrical outer casing 1, and the both sides of cylindrical outer casing 1 are respectively equipped with chute 14, and correspondence is provided with convex tendon 15 on the outer rim of sliding sleeve 2, and convex tendon 15 is arranged in chute 14.Needle handle 3 is located in the sliding sleeve 2, and is slidingly connected with sliding sleeve 2, and the both sides of sliding sleeve 2 are respectively equipped with chute 21, and the corresponding side surface of needle handle 3 is provided with convex tendon, and convex tendon is arranged in chute 21, and the front portion of needle handle 3 is provided with needle body 4, and corresponding sliding sleeve 2 front portions are provided with needle outlet 5.Spring 6 is located between the end cap 17 of needle handle 3 and cylindrical outer casing 1, and an end of spring 6 is enclosed within on the spring base 18 of end cap 17, and the other end is stuck on the Spring Card 22 of needle handle 3.Extend an elastic arm 7 on the needle handle 3, elastic arm 7 is provided with grab 8, and the position of sliding sleeve 2 correspondences is provided with bayonet socket 9, bayonet socket 9 and grab 8 by contact stop needle handle 3 in sliding sleeve 2 to front slide.Elastic arm 7 root sides are provided with damage type stress concentration breach 10, and this breach 10 is for being V-notch.Elastic arm 7 wrap direction are provided with enough spaces 13 of dodging.Head-on be provided with stopper 11 on the glide direction of elastic arm 7 compression backhauls, this stopper 11 is fixedlyed connected with cylindrical outer casing 1 by end cap 17, stopper 11 is provided with meets inclined-plane 12 head-on, this is met inclined-plane 12 and elastic arm 7 head-on and meets head-on and contact the back produce cross component force on elastic arm 7, causes elastic arm 7 to break off relations and fractures.On structure and annexation, spring 6 is connected with Spring Card 22 with spring base 18 and vertically generation effect; Stopper 11 and elastic arm 7 are vertical corresponding; Scotch 19 and sliding sleeve 2 end faces are vertical corresponding, and its effect is restriction sliding sleeve 2 indentation distances; Grab 8 on the elastic arm 7 cooperates with bayonet socket 9 on the sliding sleeve 2 before fractureing and constitutes buckle structure; Needle handle 3 slides in sliding sleeve 2, and sliding sleeve 2 slides in cylindrical outer casing 1.Chute 14 front portions of cylindrical outer casing 1 are provided with stop surface 16, and the middle part is provided with the leap muscle, and the front end of convex tendon 15 cooperates generation to slide with stop surface 16 spacing, and convex tendon 15 is provided with the leap projection, and this is crossed over projection and cooperates the slip of generation obstacle with the leap muscle.The uncovered outer end that block 20 is enclosed within cylindrical outer casing 1 forms the protection structure.
The present embodiment course of action referring to accompanying drawing 1 to accompanying drawing 7 order:
The first step is pulled out block 20.
Second step was aimed at the human blood collection position with the needle outlet 5 of blood taking needle, and pressing.The upwards slip in cylindrical outer casing 1 of sliding sleeve 2 this moment, sliding sleeve 2 drives upwards slip of needle handle 3 by the buckle structure of bayonet socket 9 and grab 8, needle handle 3 compression springs 6.Elastic arm 7 is met the inclined-plane 12 of stopper 11 head-on when needle handle 3 upwards slides, and the cross component force that inclined-plane 12 produces inwardly promotes elastic arm 7, and buckle structure is broken off relations, simultaneously at breach 10 because stress concentration, elastic arm 7 self-destruction that fractureed.At this moment, needle handle 3 promotes lower edge sliding sleeve 2 fast to lower slider at spring 6, and needle body 4 penetrates from needle outlet 5.After needle handle 3 is transmitted into lower end position, upwards bounces back and rest on sliding sleeve 2 tops.
The 3rd step covered block 20.
Claims (5)
1, a kind of damage type disposable safe automatic blood-taking needle comprises:
A cylindrical outer casing [1], the end sealing of this cylindrical outer casing [1], the other end opens wide;
A sliding sleeve [2], this sliding sleeve [2] is interior nested structure, and is located in cylindrical outer casing [1] uncovered, is slidingly connected with cylindrical outer casing [1];
A needle handle [3], this needle handle [3] is located in the sliding sleeve [2], and is slidingly connected with sliding sleeve [2], and the front portion of needle handle [3] is provided with needle body [4], and corresponding sliding sleeve [2] front portion is provided with needle outlet [5];
A spring [6], this spring [6] are located between the blind end of needle handle [3] and cylindrical outer casing [1];
It is characterized in that:
Extend an elastic arm [7] on the needle handle [3], elastic arm [7] is provided with grab [8], and the position that sliding sleeve [2] is corresponding is provided with bayonet socket [9], bayonet socket [9] and grab [8] by contact prevention needle handle [3] in sliding sleeve [2] to front slide; Elastic arm [7] root side is provided with damage type stress concentration breach [10], head-on be provided with stopper [11] on the glide direction of elastic arm [7] compression backhaul, this stopper [11] is fixedlyed connected with cylindrical outer casing [1], stopper [11] is provided with meets inclined-plane [12] head-on, this is met inclined-plane [12] and elastic arm [7] head-on and meets head-on and contact the back and go up at elastic arm [7] and produce cross component force, causes elastic arm [7] to break off relations and fractures.
2, disposable safe automatic blood-taking needle according to claim 1 is characterized in that: described stress concentration breach [10] is a V-notch.
3, disposable safe automatic blood-taking needle according to claim 1 is characterized in that: described elastic arm [7] wrap direction is provided with enough spaces [13] of dodging.
4, disposable safe automatic blood-taking needle according to claim 1, it is characterized in that: the opposite flank of described cylindrical outer casing [1] is provided with chute [14], corresponding sliding sleeve [2] side is provided with convex tendon [15], chute [14] front portion is provided with stop surface [16], the middle part is provided with the leap muscle, the front end of convex tendon [15] cooperates generation to slide with stop surface [16] spacing, and convex tendon [15] is provided with the leap projection, and this is crossed over projection and cooperates the slip of generation obstacle with the leap muscle.
5, disposable safe automatic blood-taking needle according to claim 1, it is characterized in that: the blind end of described cylindrical outer casing [1] adopts end cap [17] structure, spring base [18], scotch [19] and stopper [11] are extended in end cap [17] inboard, wherein spring base [18] is corresponding with spring [6], stopper [11] is corresponding with elastic arm [7], and scotch [19] is corresponding with sliding sleeve [2] end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02221043 CN2542206Y (en) | 2002-06-03 | 2002-06-03 | Once-used safety automatic blood-taking needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02221043 CN2542206Y (en) | 2002-06-03 | 2002-06-03 | Once-used safety automatic blood-taking needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2542206Y true CN2542206Y (en) | 2003-04-02 |
Family
ID=33699224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02221043 Expired - Lifetime CN2542206Y (en) | 2002-06-03 | 2002-06-03 | Once-used safety automatic blood-taking needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2542206Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006029556A1 (en) * | 2004-09-15 | 2006-03-23 | Yinggan Shi | A disposable safety collection needle and a safety blood collection pen for one-off ejecting |
| CN102599919A (en) * | 2012-04-11 | 2012-07-25 | 苏州乔阳医学科技有限公司 | Disposable safe blood taking needle |
| CN104490406A (en) * | 2014-12-22 | 2015-04-08 | 杭州普昂医疗科技有限公司 | Guide propelling mechanism and blood collecting needle |
| CN113940673A (en) * | 2019-08-19 | 2022-01-18 | 上海移宇科技股份有限公司 | Body fluid analyte detection device |
-
2002
- 2002-06-03 CN CN 02221043 patent/CN2542206Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006029556A1 (en) * | 2004-09-15 | 2006-03-23 | Yinggan Shi | A disposable safety collection needle and a safety blood collection pen for one-off ejecting |
| CN102599919A (en) * | 2012-04-11 | 2012-07-25 | 苏州乔阳医学科技有限公司 | Disposable safe blood taking needle |
| CN104490406A (en) * | 2014-12-22 | 2015-04-08 | 杭州普昂医疗科技有限公司 | Guide propelling mechanism and blood collecting needle |
| CN104490406B (en) * | 2014-12-22 | 2016-11-30 | 杭州普昂医疗科技有限公司 | A kind of guiding propulsive mechanism and blood taking needle |
| CN113940673A (en) * | 2019-08-19 | 2022-01-18 | 上海移宇科技股份有限公司 | Body fluid analyte detection device |
| CN113940673B (en) * | 2019-08-19 | 2024-02-13 | 上海移宇科技股份有限公司 | Body fluid analyte detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120603 Granted publication date: 20030402 |