CN101984269A - Special extension/compression hybrid spring for hemostixes - Google Patents
Special extension/compression hybrid spring for hemostixes Download PDFInfo
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- CN101984269A CN101984269A CN 201010574482 CN201010574482A CN101984269A CN 101984269 A CN101984269 A CN 101984269A CN 201010574482 CN201010574482 CN 201010574482 CN 201010574482 A CN201010574482 A CN 201010574482A CN 101984269 A CN101984269 A CN 101984269A
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- spring
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- pressure spring
- extension spring
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Abstract
The invention relates to a special extension/compression hybrid spring for hemostixes, which is characterized by comprising an extension spring and a compression spring which are coaxial, wherein the extension spring and the compression spring are connected with each other through the ends. When the spring is used on a hemostix, the puncture needle starts to pull the extension spring instead of the compression spring under the action of inertia kinetic energy, so that the kinetic energy loss in the insertion process of the puncture needle is obviously reduced, and the saved kinetic energy can be used for increasing the insertion speed and force of the puncture needle, thereby eliminating the pain of the patient in the needle insertion process. The extension spring drives the puncture needle to withdraw, so that the withdrawing speed of the puncture needle can completely satisfy the speed at which pain can not be caused. The hybrid spring fully performs the functions of the two springs, so that the insertion and withdrawing of the needle of the hemostix can not make the patient feel pain. In addition, the compression spring and the extension spring are connected in a seamless way and do not interfere with each other during movement. The spring is in an organic integrated structure, thereby simplifying the structure of the hemostix and blood sampling pen and lowering the manufacturing cost and assembling cost.
Description
Technical field
The invention belongs to the spring technical field, particularly relate to a kind of being used for to make the drawing and pressing type mixing spring that medical instruments for blood collection such as the blood collecting pen of power or disposable blood taking device are used with spring.
Background technique
Blood collecting pen and disposable blood taking device are a kind of medical equipments commonly used, are to utilize blood taking needle puncture patient's finger or ear to take a blood sample.At present, instrument for blood collection on the market in use all can to patient bring in various degree pain, this pain to be because instrument for blood collection in use, the inserting needle speed of blood taking needle or go out that needle speed causes excessively slowly.When inserting needle speed was significantly less than the neural cerebripetal transmission speed of the pain of human body, the human body nerve ending can be finished once the overall process to the primary event arc of brain conduction smoothly, thereby produces pain; When withdraw of the needle speed is crossed when slow, because of being easy to produce small relative movement (especially being afraid of the women or the children of pain) between blood taking needle and patient's finger or the ear, syringe needle is non-perpendicular pulling or swing in human body, must increase the weight of the stimulation to the human body nerve ending, thereby produces pain.The two fast one slow rules of following when above-mentioned principle and intramuscular injection (inserting needle and to go out needle speed fast, it is slow to push away medicine) are same reasons.
The disposable blood taking device that existing each factory on the market produces all is with the power source of pressure spring as the inserting needle and the withdraw of the needle, and the overwhelming majority adopts a pressure spring to realize two actions of the hemostix inserting needle and the withdraw of the needle.Its working principle is: the pressure spring that is in compressive state promotes the blood taking needle inserting needle by the abrupt release energy, when pressure spring is upspring and enter free state, pressure spring has been finished a working procedure, and its as the work mission of pressure spring and no longer output kinetic energy that is through with, can still have needling length about 4mm can finish the overall process of the blood taking needle inserting needle and the withdraw of the needle at this moment, at this moment, need utilize blood taking needle (by syringe needle, parts such as needle handle are formed) on the inertia kinetic energy that had drive and will be in pressure spring under the free state and elongate length about 4mm, to finish the inserting needle action, after inserting needle is finished, inertia kinetic energy on the blood taking needle is zero, the pressure spring that is elongated can drive connection blood taking needle retraction thereon, finishes withdraw of the needle action with this.Above-mentioned pressure spring is used as extension spring, need consume the very big kinetic energy of blood taking needle in the inserting needle process during stretching, therefore, will inevitably cause the inserting needle speed of blood taking needle slow, thereby make patient produce pain.
In addition, the used blood collecting pen of diabetes patient on the market is to be the leading products of power with the spring equally.This blood collecting pen has independently inserting needle pressure spring and withdraw of the needle pressure spring (extremely this structure of the same employing of other hemostix), and blood collecting pen is finished inserting needle and withdraw of the needle action respectively by two springs.This blood collecting pen in use, can bring in various degree pain to patient equally, reason have following some: 1. in order to guarantee that the blood collecting pen withdraw of the needle puts in place, the reduction length of inevitable requirement withdraw of the needle pressure spring is greater than the withdraw of the needle length of blood collecting pen, thereby can make the inserting needle pressure spring also not during the freedom of entry state withdraw of the needle pressure spring just start working, can reduce the inserting needle kinetic energy of blood taking needle, reduce inserting needle speed, make patient produce pain; 2. some producers are in order to keep the inserting needle speed of blood taking needle to greatest extent, and make withdraw of the needle pressure spring very soft, will influence the withdraw of the needle speed of blood taking needle like this, can make that equally patient produces pain.
Summary of the invention
The present invention provides a kind of simple in structure for solving the deficiency that exists in the known technology, can effectively eliminate the drawing and pressing type mixing spring that the disposable blood taking device of the pain that hemostix or blood collecting pen bring to patient is in use used.
The technological scheme that the present invention takes for the deficiency that exists in the solution known technology is: the special-purpose drawing and pressing type mixing of a kind of hemostix spring, it is characterized in that: this mixing spring comprises the extension spring and the pressure spring of coaxial line, and described extension spring is connected by the end with pressure spring.
The present invention can also adopt following technological scheme:
Described mixing spring is an integral structure, is made up of extension spring that forms with a steel wire coiling and pressure spring.
The spring filament diameter of described extension spring and pressure spring is 0.3-0.6mm, and described extension spring is 0.6:1-1.2:1 with the number of turns ratio of pressure spring.
One end of described mixing spring is an extension spring, and the other end is a pressure spring.
The two ends of described mixing spring are pressure spring, and the middle part of described mixing spring is an extension spring.
The two ends of described mixing spring are extension spring, and the middle part of described mixing spring is a pressure spring.
Advantage and good effect that the present invention has are: described mixing spring comprises extension spring and pressure spring, and extension spring is connected by the end with pressure spring.The present invention is organically integrated extension spring and pressure spring, and when spring by compression the time, pressure spring works; When spring was stretched, extension spring worked.Compare existing hemostix or the employed spring of blood collecting pen, the present invention has following advantage:
1. after pressure spring promotes blood taking needle high speed inserting needle and returns to free state, blood taking needle starts drag extension spring because of inertia kinetic energy, compare existing blood taking needle pulling pressure spring, significantly reduced kinetic energy loss in the blood taking needle inserting needle process (in conjunction with actual measurement, can reduce the kinetic energy loss more than 50%), like this, the kinetic energy of saving can be used for improving on the inserting needle speed and strength of blood taking needle, has eliminated the pain of inserting needle.In addition, extension spring drives the speed of the blood taking needle withdraw of the needle, can satisfy the speed that the blood taking needle withdraw of the needle does not cause pain fully.This mixing spring performs to the effect of two kinds of springs ultimate attainment, makes the hemostix inserting needle and the withdraw of the needle can not bring pain to patient.
2. the present invention has avoided adopting two pressure springs with pressure spring and the seamless connection of extension spring, and the situation of the mutual interference effect of pressure spring that brings.
3. this drawing and pressing type mixing spring is organic integral structure, can simplify the structure of hemostix and blood collecting pen, has reduced manufacture cost and assembly cost.
The present invention has thoroughly solved for many years, brings the difficult problem of pain when the trace blood device to patient, and spring processing is simple, and cost is low, thereby spring has good enterprise, social benefit and market prospects on producing and using.
Description of drawings
For the embodiment of the invention or technological scheme of the prior art clearly are described, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, the accompanying drawing that describes below tightly is some embodiments of the present invention, for related domain or those of ordinary skill, under the situation of not paying creative prerequisite, can also obtain other accompanying drawings according to this accompanying drawing.
Fig. 1 is the topology view of disclosed a kind of spring in the embodiment of the invention one;
Fig. 2 is the topology view of disclosed a kind of spring in the embodiment of the invention two;
Fig. 3 is the topology view of disclosed a kind of spring in the embodiment of the invention three.
Among the figure: 1, pressure spring; 2, extension spring.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, technological scheme of the present invention is clearly and completely described, obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment among the present invention, the every other embodiment that those of ordinary skills are obtained under the prerequisite of not making creative work belongs to protection scope of the present invention.
The invention discloses special-purpose drawing and pressing type mixings of a kind of hemostix spring, this drawing and pressing type mixing spring is formed by pressure spring 1 and extension spring 2 organic assembling, pressure spring 1 and extension spring 2 coaxial lines, and be connected by the end.
Embodiment one
Fig. 1 is read in parent participation, and this mixing spring is made up of one section pressure spring 1 and one section extension spring 2, and pressure spring 1 and extension spring 2 are selected the stainless steel spring silk in same silk footpath for use, and coiling forms drawing and pressing type mixing spring continuously on torsion machine.
Embodiment two
See also Fig. 2, this mixing spring is made up of two sections pressure springs 1 and one section extension spring 2, two sections pressure springs 1 lay respectively at the both sides of extension spring 2, two sections pressure springs 1 and one section extension spring 2 are selected same silk stainless steel spring silk directly for use, and coiling forms drawing and pressing type mixing spring continuously on torsion machine.
Embodiment three
See also Fig. 3, this mixing spring is made up of one section pressure spring 1 and two sections extension springs 2, two sections extension springs 2 lay respectively at the both sides of pressure spring 1, one section pressure spring 1 and two sections extension springs 2 are selected same silk stainless steel spring silk directly for use, and coiling forms drawing and pressing type mixing spring continuously on torsion machine.
Technical parameter and installation requirement that this drawing and pressing type mixes spring are:
1. spring is in when assembling, must accomplish the two ends of mixing spring fixingly simultaneously, like this, can guarantee that blood taking needle ejects inserting needle at a high speed, also can guarantee the blood taking needle withdraw of the needle that bounces back at a high speed.
2. according to the structure of different hemostixes and the syringe needle diameter of blood taking needle, select the different spring filament diameters and the coiling number of turns for use.Described spring filament diameter is selected in the scope internal reference of 0.3-0.6mm, if the spring filament diameter less than 0.3mm, the phenomenon that elastic force is not enough or pulling force is not enough can appear in spring, thereby reduces the inserting needle or the withdraw of the needle speed of blood taking needle, makes patient produce pain; If the spring filament diameter is greater than 0.6mm, the elastic force of spring is excessive, and the syringe needle of blood taking needle can stop the long time in tissue, and the syringe needle of blood taking needle can swing, and can cause heavier pain reaction, has also increased unnecessary material and cost simultaneously.
3. generally speaking, extension spring gets final product for 1:1 with the number of turns ratio of pressure spring, can select in proportion 0.6:1-1.2:1 internal reference as required, but should grasp following rule, generally speaking, the number of turns of extension spring coiling is very few, the kinetic energy consumption in the time of can increasing blood taking needle pulling extension spring, thereby reduce the inserting needle speed of blood taking needle, make patient produce pain; The number of turns of extension spring steel coiling is too much, the inserting needle speed of the blood taking needle that not only can slow down, but also can increase the total length that mixes spring, and make the total length of hemostix increase, increased unnecessary cost of production.
4. mixing spring of the present invention, blood taking needle is that the pulling extension spring carries out inserting needle, compare existing blood taking needle pulling pressure spring inserting needle, inertia kinetic energy loss in the time of can significantly reducing the blood taking needle inserting needle, here, must design extension spring by above-mentioned parameter, compare pressure spring and reduce 50%-70% to guarantee the loss of described inserting needle inertia kinetic energy.When the inertia kinetic energy loss reduces less than 50% the time, can reduce inserting needle speed; When the inertia kinetic energy loss reduces greater than 70 the time, can reduce the withdraw of the needle speed of blood taking needle, the two all can bring pain to patient.
5. this drawing and pressing type mixes the stainless steel spring silk that spring can be selected same silk footpath for use, forms according to designing requirement continuous coiling on torsion machine.In addition, also can adopt different silk footpath segmentation coiling extension springs and pressure springs, will make extension spring and pressure spring afterwards and utilize link (this link can be two sections plastic fastenings that have draw-in groove, represents among the figure) linking into an integrated entity gets final product.
Drawing and pressing type mixing spring of the present invention has essential distinction with the cylindrical compression spring of indivedual segmentation coilings that exist on the market.The cylindrical compression spring of segmentation coiling on the market, be because of designing or structural special requirement, promptly guaranteeing that pressure spring has under the certain-length prerequisite, spring also will have the elastic force of requirement, if the total length of pressure spring is all turned to the form of pressure spring, will inevitably diminish because of the long elastic force that makes of the length of spring.For addressing the above problem, have to be with this pressure spring segmentation coiling, at first, elastic force requirement according to this pressure spring, calculate the silk footpath of this pressure spring, the coiling number of turns, free length, active length, parameters such as spring wire ring height, and carry out coiling according to the manufacturing process of conventional pressure spring, at last supply the not enough difference of spring length by gapless close winding method again, this winding method can guarantee the length requirement of this pressure spring, can guarantee the elastic force requirement of this pressure spring again, and close winding spring section wherein only plays the effect that replenishes spring length, on the performance of spring, its essence still is a kind of pressure spring.
And this drawing and pressing type mixes spring and above-mentioned special lengthening cylindrical compression spring has essential distinction, drawing and pressing type mixing spring, not only to calculate the elastic force requirement of pressure spring in design, also to calculate the best pulling force of the extension spring that is connected with pressure spring, guarantee in the blood taking needle withdraw of the needle not under bitterly the prerequisite with this, save the pressure spring kinetic energy loss to greatest extent, improve the inserting needle speed of blood taking needle, can not bring pain when guaranteeing the blood taking needle inserting needle to patient.
It is cylindricality spring or volute spring that this drawing and pressing type mixes the optimal manufacturing shape of spring, and this also is best suited for disposable safe hemostix and blood collecting pen, has to make simply, easy for installation, the low and practical advantage of processing cost.
Claims (6)
1. the special-purpose drawing and pressing type mixing of hemostix spring, it is characterized in that: this mixing spring comprises the extension spring and the pressure spring of coaxial line, and described extension spring is connected by the end with pressure spring.
2. the special-purpose drawing and pressing type mixing of a kind of hemostix according to claim 1 spring, it is characterized in that: described mixing spring is an integral structure, is made up of extension spring that forms with a steel wire coiling and pressure spring.
3. the special-purpose drawing and pressing type mixing of a kind of hemostix according to claim 1 spring, it is characterized in that: the spring filament diameter of described extension spring and pressure spring is 0.3-0.6mm, described extension spring is 0.6:1-1.2:1 with the number of turns ratio of pressure spring.
4. according to claim 1, the special-purpose drawing and pressing type mixing of 2 or 3 described a kind of hemostixes spring, it is characterized in that: an end of described mixing spring is an extension spring, and the other end is a pressure spring.
5. according to claim 1, the special-purpose drawing and pressing type mixing of 2 or 3 described a kind of hemostixes spring, it is characterized in that: the two ends of described mixing spring are pressure spring, and the middle part of described mixing spring is an extension spring.
6. according to claim 1, the special-purpose drawing and pressing type mixing of 2 or 3 described a kind of hemostixes spring, it is characterized in that: the two ends of described mixing spring are extension spring, and the middle part of described mixing spring is a pressure spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010574482 CN101984269A (en) | 2010-12-06 | 2010-12-06 | Special extension/compression hybrid spring for hemostixes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010574482 CN101984269A (en) | 2010-12-06 | 2010-12-06 | Special extension/compression hybrid spring for hemostixes |
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| Publication Number | Publication Date |
|---|---|
| CN101984269A true CN101984269A (en) | 2011-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010574482 Pending CN101984269A (en) | 2010-12-06 | 2010-12-06 | Special extension/compression hybrid spring for hemostixes |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090309A (en) * | 2015-09-02 | 2015-11-25 | 无锡市东赫金属制品有限公司 | Tension buffering spring |
| CN113417957A (en) * | 2021-07-31 | 2021-09-21 | 徐庆利 | Mixed vibration frequency conversion spring |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1742755A (en) * | 1926-12-10 | 1930-01-07 | Gen Motors Corp | Valve spring |
| JPS57171130A (en) * | 1982-03-18 | 1982-10-21 | Nhk Spring Co Ltd | Method of attaching coiled tension spring |
| JPH10184751A (en) * | 1996-12-27 | 1998-07-14 | Nhk Spring Co Ltd | Two-stage pitch compression coil spring |
| CN101191524A (en) * | 2006-11-29 | 2008-06-04 | 上海通运汽车科技有限公司 | Pitch variable spiral compression spring |
| CN201310589Y (en) * | 2008-12-31 | 2009-09-16 | 常州泰山弹簧有限公司 | Compound compression spring |
-
2010
- 2010-12-06 CN CN 201010574482 patent/CN101984269A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1742755A (en) * | 1926-12-10 | 1930-01-07 | Gen Motors Corp | Valve spring |
| JPS57171130A (en) * | 1982-03-18 | 1982-10-21 | Nhk Spring Co Ltd | Method of attaching coiled tension spring |
| JPH10184751A (en) * | 1996-12-27 | 1998-07-14 | Nhk Spring Co Ltd | Two-stage pitch compression coil spring |
| CN101191524A (en) * | 2006-11-29 | 2008-06-04 | 上海通运汽车科技有限公司 | Pitch variable spiral compression spring |
| CN201310589Y (en) * | 2008-12-31 | 2009-09-16 | 常州泰山弹簧有限公司 | Compound compression spring |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090309A (en) * | 2015-09-02 | 2015-11-25 | 无锡市东赫金属制品有限公司 | Tension buffering spring |
| CN113417957A (en) * | 2021-07-31 | 2021-09-21 | 徐庆利 | Mixed vibration frequency conversion spring |
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Application publication date: 20110309 |