CN103767713B - Puncture device causing less pain - Google Patents
Puncture device causing less pain Download PDFInfo
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- CN103767713B CN103767713B CN201410068802.6A CN201410068802A CN103767713B CN 103767713 B CN103767713 B CN 103767713B CN 201410068802 A CN201410068802 A CN 201410068802A CN 103767713 B CN103767713 B CN 103767713B
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Abstract
The invention discloses a puncture device causing less pain. The puncture device comprises a blood taking needle, a rod head, a rod body and a tail rod, wherein the rod head is fixed to the front end of the rod body; the tail rod is arranged at the back end of the rod body; an ejection assembly is arranged in the rod body; a needle seat is movably connected in the rod head; a handle rod of the blood taking needle is connected in the needle seat; the front end of an ejection rod in the ejection assembly is over against a carrier rod communicated with the back end of the needle seat. In the puncture device causing less pain having the structure, the ejection device is separated from the needle seat of the blood taking needle, thereby interrupting deviation shake caused by ejection of the ejection device in the transmission process of the needle seat, preventing the phenomenon of shake or deviation of the blood taking needle in a skin contact process, and reducing pain of a patient. Moreover, by improving an indicating sleeve and the tail rod, the infection risk of an operator is further lowered, the operation efficiency is increased, and the manufacturing cost is reduced.
Description
Technical field
The present invention relates to medical diagnosis technique with the apparatus field, be specifically related to a kind of Centesis instrument that can alleviate the micro blood sample collection of particular patient pain.
Background technology
Very general for the quantitative assay of Related Component in human body fluid in modern medicine, such as, for specific patient, need to monitor glucose in blood, lactate, cholesterol and bilirubin etc., analyze.Early stage operator use independently blood taking needle manually puncture patient skin formed one wound gather blood sample, the method has higher technical requirement and certain mental pressure for operator and particular patient, and patient keenly feels greatly.
On March 12nd, 1985, No. 4503856th, United States Patent (USP) disclosed a kind of sting device, this device has a tube-like envelope, one is arranged in shell slidably blood-taking needle holder, with a compressible spring to provide the strength be pushed forward to by clamper in the perforation position of skin, namely clamper is got back on its neutral gear position subsequently.Its operation principle is that side kayser launches.This patent has been started has certain representational technical scheme, and operator is not directly gripping the realization puncture sampling of less misery under blood taking needle state.
Thereafter insider and enterprise constantly improve for the device of skin penetrating sample of blood, drawn.On July 9th, 1985, No. 4527561st, United States Patent (USP) disclosed a kind of sting device, this device includes second spring to regain blood-taking needle holder (also can see United States Patent (USP) the 4535769th and No. 4553541) after lancet penetrates user skin, perfect further sting device.
Other are representative improves as nineteen ninety December No. 4976724th, United States Patent (USP)s on the 11st disclose a kind of blood lancet device, and this device comprises blood taking needle that a kind of mechanism can allow user penetrate to use and gets along well that its contacts.And for example on June 7th, 1994, No. 5318584th, United States Patent (USP) disclosed a kind of blood lancet device, add paracentesis depth and control adjustment function, this device comprise a kind of rotation, slip transmission system can when adjustable, repeatably penetration depth and less misery carry out and puncture.
Although sting device and be that the multiple same device of title is constantly improving or upgrading distortion with blood collecting pen, mainly relate to the selecting of component materials, configuration design, its basic functional principle and side kayser ejection mechanism do not have basic change.This structure has a feature, and there is the lancet holder of a prolongation at device center.When entering percussion SBR, lancet holder ad hoc structure and the structure snap fit being located at device sidewall, press the trigger unit of projecting device appearance when operator operates, kayser status releasing, lancet holder automatically resets after having launched forward puncture operation.To be lancet holder ad hoc structure with the latching structure being located at device sidewall remove its deficiency when contacting, lancet holder is caused to be out of shape or lateral deviation, and then inevitably make the synchronous lateral deviation of blood taking needle being assembled in lancet holder front end, free state is in when blood taking needle moves forward, the inevitable opposite direction to distortion resets, so cause blood taking needle can not move linearly vertically when target site is launched, the fact is a kind of movement in a curve track, skin puncture moment, inevitable needle point shook the larger stimulation and wound expansion that cause underlying nerve tip, increase the pain of patient and the probability of infection.
In addition, there is the loaded down with trivial details problem of use in existing sting device.For preventing different cross-patient contamination, blood taking needle matching used with it is single use, and therefore every subjob needs the blood taking needle that more renews.After completing one-time puncture Blood specimen collection, blood taking needle must be removed from sting device, its method has two kinds: one to be directly manually remove, it forces to extract from keeper by the blood taking needle that operator's fingerhold completes puncture operation, this operation measure is loaded down with trivial details, and operator easily touches needle point and the blood of blood taking needle front end, there are mental pressure and larger infection risk; Two is utilize the pressure ejecting device be located on sting device to remove, this pressure ejecting device is generally and is attached to push rod outside sting device or the collar, and to be connected as a single entity with push rod or the collar and to extend to the component of blood taking needle keeper bottom, not only modular construction is complicated for it, assembling is complicated, easy damage, affect product attractive in appearance, and removing more loaded down with trivial details, its order is:---operation push rod or the collar travel forward and force to release blood taking needle-----manually retracted push rod or the collar to remove Cang Gai (rotating or drawing).In use procedure, operator needs repeatedly spiral to install or remove blood sampling needle chamber lid, and to complete withdraw of the needle operation, complex operation, service efficiency are poor.
Sting device in use has the action rotating indicating sleeve and post-tensioning foot piece, need the frictional force increasing parts and operator's hand, existing structure is on functional unit, establish recess or bulge loop, but the mould of this structure is complicated, adds the production cost of product.
Summary of the invention
The object of the invention is to: overcome the deficiencies in the prior art, a kind of sting device alleviating pain is provided, by catapult-launching gear is separated with the needle stand of blood taking needle, when catapult-launching gear is launched produce skew shake with the transmission process of needle stand in interrupt, prevent blood taking needle with contact skin process in produce and shake or occur shift phenomenon, reduce the pain of patient; Additionally by the Curve guide impeller of indicating sleeve and foot piece, reduce further the danger that operator infects, improve working performance, reduce manufacturing cost.
The technical solution used in the present invention is:
Alleviate the sting device of pain, comprise blood taking needle, bar head, the body of rod and foot piece, described bar head is fixed on the front end of the body of rod, and the rear end of the body of rod is located at by foot piece, is provided with and launches assembly in the body of rod; The described assembly that launches comprises piston ejector ram, ejector piston, described piston ejector ram, ejector piston is movably connected on fixed mount, described fixed mount is fixed on body of rod inwall, described piston ejector ram, ejector piston is arranged with from front to back respectively percussion spring, back-moving spring B, and be located at the spring retainer hoop at piston ejector ram, ejector piston two ends, be connected with needle stand in described bar head, the handle bar of blood taking needle is connected in needle stand, the push rod that described piston ejector ram, ejector piston front end is communicated with facing to needle stand rear end; Between percussion spring and back-moving spring B, be provided with withdraw of the needle spring, spring housing, described foot piece is fixedly connected with spring housing, and foot piece intracavity is provided with knock-pin, and knock-pin front end is facing to the handle rod rear end of blood taking needle.
Further improvement of the present invention scheme is, in the middle part of described needle stand, side is provided with I-shaped elastic joint, the external diameter of described I-shaped elastic joint position is less than the external diameter of needle stand front and back end, its internal diameter is slightly less than the internal diameter of front end, the handle bar of blood taking needle inserts needle stand intracavity, extends I-shaped elastic joint position, is fixedly connected with by interference fit.Wherein I-shaped elastic joint is convenient to the fixing of needle handle bar of taking a blood sample, in addition, after blood taking needle insertion needle stand is also fixed by I-shaped elastic joint, I-shaped elastic joint can outwards be heaved, external diameter due to I-shaped elastic joint position is less than the external diameter of needle stand front and back end, can prevent the I-shaped elastic joint heaved and bar head inwall from interfering, impact normally uses.
Further improvement project of the present invention is, described hub outer surface and bar head inwall are provided with guide frame, and guide frame coordinates guiding needle stand to move axially.
Further improvement project of the present invention is, the percussion spring be placed on piston ejector ram, ejector piston is positioned at fixed mount, and piston ejector ram, ejector piston coordinates with two stomidiums of fixed mount and moves axially.
Further improvement project of the present invention is, described bar head inner chamber is provided with spacing ring A, and bar head inner chamber is divided into ante-chamber and back cavity by spacing ring A, described needle stand is positioned at ante-chamber, described push rod is positioned at bar head back cavity, and push rod front end is communicated in needle stand, and the front end of needle stand is stretched out from nose; Be positioned on the push rod of bar head back cavity, be provided with the stroke limit abutment of needle stand to piston ejector ram, ejector piston direction successively, the spacing projection of reseting pressuring spring A, described reseting pressuring spring A is placed on the push rod of spacing projection front end.
Further improvement project of the present invention is provided with spacing ring B in described spring housing, by withdraw of the needle spring and back-moving spring B spaced apart; Be provided with defining flange outside spring housing, described foot piece inner chamber is provided with spacing ring C, and both are connected and fixed coupling.
Further improvement project of the present invention is, on described bar head, movable sleeve is provided with indicating sleeve, described indicating sleeve outer surface is provided with axially anti-skidding striped A, and be equidistantly provided with the home block of display paracentesis depth, described home block is divided into main explicit identification block and secondary explicit identification block, and main explicit identification block and secondary explicit identification block gap are arranged; Described main explicit identification block length increases successively, and secondary explicit identification block length is consistent, and is shorter than the shortest main explicit identification block; Wherein paracentesis depth is that the home block front end area of intermediate value is without anti-skidding striped A.
Further improvement project of the present invention is, described indicating sleeve front end sleeve is provided with block, and described block adopts transparent material to make, and is provided with needle outlet in the front end of block, and outside block opening, be provided with protruding ring, described protruding ring external diameter is greater than indicating sleeve external diameter.
Further improvement project of the present invention is, described piston ejector ram, ejector piston rear portion is provided with limited block C, and the rear end of limited block C is domatic for importing, and spring retainer hoop B is located on the piston ejector ram, ejector piston of limited block C front end.
Further improvement project of the present invention is, axially anti-skidding striped B is established on described foot piece surface.
Beneficial effect of the present invention is:
The first, the sting device alleviating pain of the present invention, by catapult-launching gear is separated with the needle stand of blood taking needle, when catapult-launching gear is launched produce skew shake with the transmission process of needle stand in interrupt, prevent blood taking needle needle point shaking or occur to offset and contact the phenomenon of peripheral nerve with producing in contact skin process, reduce the pain of patient better.
The second, the sting device alleviating pain of the present invention, disposablely removing blood taking needle and block by promoting before foot piece to do, reduce further the danger that operator infects, simplifying blood sampling operation, improve working performance.
Three, the sting device alleviating pain of the present invention, by indicating sleeve and foot piece Curve guide impeller, simplifies mould structure, reduces manufacturing cost.
accompanying drawing illustrates:
Fig. 1 is embodiment of the present invention axonometric chart.
Fig. 2 is embodiment of the present invention sectional view.
Fig. 3 is embodiment of the present invention three-dimensional exploded view.
Fig. 4 is axonometric chart of blocking a shot in the present invention.
Fig. 5 is indicating sleeve axonometric chart in the present invention.
Fig. 6 is needle stand axonometric chart in the present invention.
Fig. 7 is adjustable ring axonometric chart in the present invention.
Fig. 8 is king-rod head axonometric chart of the present invention.
Fig. 9 is push rod axonometric chart in the present invention.
Figure 10 is piston ejector ram, ejector piston axonometric chart in the present invention.
Figure 11 is fixed mount axonometric chart in the present invention.
Figure 12 is spring housing axonometric chart in the present invention.
Figure 13 is body of rod axonometric chart in the present invention.
Figure 14 is foot piece axonometric chart in the present invention.
detailed description of the invention:
Foregoing of the present invention is not really wanted to present each embodiment of the present invention or each aspect.The detailed description that extra feature and advantage of the present invention can be set forth from below and accompanying drawing are known and are found out.
Shown in composition graphs 1 ~ Figure 14, the present invention includes blood taking needle 4, bar head 6, the body of rod 13 and foot piece 15, described bar head 6 is fixed on the front end of the body of rod 13, and the rear end of the body of rod 13 is located at by foot piece 15, is provided with and launches assembly in the body of rod 13; The described assembly that launches comprises piston ejector ram, ejector piston 8, described piston ejector ram, ejector piston 8 is movably connected on fixed mount 9, described fixed mount 9 is fixed on the body of rod 13 inwall, described piston ejector ram, ejector piston 8 is arranged with from front to back respectively percussion spring 17, back-moving spring B19, and be located at the spring retainer hoop at piston ejector ram, ejector piston 8 two ends, be connected with needle stand 3 in described bar head 6, the needle point 401 of blood taking needle 4 forward, handle bar 402 is connected in needle stand 3, the push rod 7 that described piston ejector ram, ejector piston 8 front end is communicated with facing to needle stand 3 rear end; Between percussion spring 17 and back-moving spring B19, be provided with withdraw of the needle spring 18, spring housing 11, described foot piece 15 is fixedly connected with spring housing 11, and foot piece 15 intracavity is provided with knock-pin 14, and knock-pin 14 front end is facing to handle bar 402 rear end of blood taking needle 4.
In the middle part of described needle stand 3, side is provided with I-shaped elastic joint 301, the external diameter of described I-shaped elastic joint 301 position is less than the external diameter of needle stand 3 front and back end, its internal diameter is slightly less than the internal diameter of front end, the handle bar 402 of blood taking needle 4 inserts needle stand 3 intracavity, extends I-shaped elastic joint 301 position, is fixedly connected with by interference fit.Wherein I-shaped elastic joint 301 can so that handle bar 402 fixing of blood taking needle 4 compared to the elastic joint of other form, in addition, blood taking needle 4 insert needle stand 3 and fixing by I-shaped elastic joint 301 after, I-shaped elastic joint 301 can outwards be heaved, external diameter due to I-shaped elastic joint 301 position is less than the external diameter of needle stand front and back end, can prevent the I-shaped elastic joint 301 heaved from interfering with bar head 6 inwall, impact normally uses.
Described needle stand 3 outer surface and bar head 6 inwall are provided with guide frame, and guide frame coordinates guiding needle stand 3 to move axially.
Described guide frame comprises direction recess A302, the corresponding set guiding raised line A603 of bar head front inner wall set by needle stand 3 outer surface, or hub outer surface establishes guiding raised line B, the corresponding direction recess B(accompanying drawing of establishing of bar head front inner wall do not mark), 6 assembling of needle stand 3 insertion rod, direction recess A302 and guiding raised line A603 coordinates guiding needle stand 3 to move axially.By guide frame, be more convenient to moving axially between needle stand 3 and bar head 6.
The described percussion spring 17 be placed on piston ejector ram, ejector piston 8 is positioned at fixed mount 9, and piston ejector ram, ejector piston 8 coordinates with two stomidiums of fixed mount 9 and moves axially.
Described piston ejector ram, ejector piston 8 front end is provided with spring retainer hoop A801 and elastic arm 802, is provided with lock hole 901 with the fixed mount 9 of elastic arm 802 corresponding position; Elastic arm 802 is limited in the lock hole 901 of fixed mount 9, or stretches out fixed mount 9 front end, and when elastic arm 802 is limited in lock hole 901, it is corresponding with the trigger key 10 set by the body of rod 13.
Described trigger key 10 is located in the cavity formed between fixed mount 9 and the body of rod 13 inwall, and protruding from key hole 1301, and the free end 803 of described elastic arm 802 contacts with the bottom of trigger key 10.
The described body of rod 13 is positioned at key hole 1301 front end and is provided with indication key 1302, described indication key 1302 points to the home block of indicating sleeve 2.By the instruction of indication key 1302 pairs of home blocks, the paracentesis depth of blood taking needle can be selected intuitively.
The structure that described fixed mount 9 lumenal cross-section structure and spring retainer hoop A801 and elastic arm 802 are formed matches, or guiding raised line B vertically respectively set by correspondence of fixed mount 9 inner chamber and spring retainer hoop A801 and direction recess coupling B (accompanying drawing does not mark), guide piston ejector ram, ejector piston 8 and elastic arm 802 to move axially.
Bar head 6 inner chamber is provided with spacing ring A601, and bar head 6 inner chamber is divided into ante-chamber and back cavity by spacing ring A601, and described needle stand 3 is positioned at ante-chamber, and described push rod 7 is positioned at bar head 6 back cavity, and push rod 7 front end is communicated in needle stand 3, and the front end of needle stand 3 is stretched out from bar head 6 front end; Be positioned on the push rod 7 of bar head 6 back cavity, be provided with the stroke limit abutment 701 of needle stand 3 to piston ejector ram, ejector piston 8 direction successively, the spacing projection 702 of reseting pressuring spring A16, described reseting pressuring spring A16 is placed on the push rod 7 of spacing projection 702 front end.
Be provided with spacing ring B1101 in described spring housing 11, by withdraw of the needle spring 18 and back-moving spring B19 spaced apart; Be provided with defining flange 1102 outside spring housing 11, described foot piece 15 inner chamber is provided with spacing ring C1501, and both are connected and fixed coupling.
The end winding support of described knock-pin 14 is in foot piece 15 rear end inwall, and knock-pin 14 penetrates piston ejector ram, ejector piston 8 and push rod 7 cavity, and its front end is facing to handle bar 402 rear end of blood taking needle 4.
Described foot piece 15 rear end inwall is provided with pillar 1503, and knock-pin 14 is fixedly connected with pillar 1503, and described knock-pin 14 is straight tube or directly excellent.
On described bar head 6, movable sleeve is provided with indicating sleeve 2, described indicating sleeve 2 outer surface is provided with axially anti-skidding striped A203, and be equidistantly provided with the home block of display paracentesis depth, described home block is divided into main explicit identification block 201 and secondary explicit identification block 202, and main explicit identification block 201 and secondary explicit identification block 202 interval are arranged; Described main explicit identification block 201 length increases successively, and secondary explicit identification block 202 length is consistent, and is shorter than the shortest main explicit identification block 201; Wherein paracentesis depth be the home block front end area of intermediate value without anti-skidding striped A203, by the cooperation of main explicit identification block 201 and secondary explicit identification block 202, the observation being convenient to user uses; Anti-skidding striped A203 is convenient to the operation of user, improves operating efficiency.
Described bar head 6 is arranged with adjustable ring 5, indicating sleeve 2 and adjustable ring 5 combine fixing, the chute 602 that bar head 6 surface is circumferentially set, the corresponding slide block set by chute 602 of adjustable ring 5 inwall, described chute 602 is helical structure, driving adjustable ring 5 to do axially-movable by rotating indicating sleeve 2 simultaneously, indicating sleeve 2 being rotated along bar head 6 and moves axially simultaneously.
Described indicating sleeve 2 inwall is provided with locating convex block 204, adjustable ring 5 correspondence is provided with locating notch 501, adjustable ring 5 passes through the cooperation of locating convex block 204 and locating notch 501, the inwall of indicating sleeve 2 is fixed in combination, by the cooperation of locating convex block 204 and locating notch 501, be convenient to the assembling location of indicating sleeve 2 and adjustable ring 5.
Described indicating sleeve 2 front end sleeve is provided with block 1, described block 1 adopts transparent material to make, needle outlet 101 is provided with in block 1 front end, protruding ring 102 is provided with outside block 1 opening, described protruding ring 102 external diameter is greater than indicating sleeve 2 external diameter, protruding ring 102 is the force section of block 1 dismounting, and convenient operation person, to the dismounting of block 1, increases work efficiency.
Described piston ejector ram, ejector piston 8 rear portion is provided with limited block C804, and the rear end of limited block C804 is domatic for importing, and spring retainer hoop B12 is located on the piston ejector ram, ejector piston 8 of limited block C804 front end.
Axially anti-skidding striped B1502 is established on described foot piece 15 surface.The frictional force of user finger and foot piece 15 can be increased, convenient operation by anti-skidding striped B1502.
The material of described needle stand 3, push rod 7 is the good material of self-lubricating property, as POM, PTFE, PEEK, PBT or PA etc., is convenient to the slip of needle stand 3 and push rod 7.
Described bar head 6 is all fixed on the positioning by the guide frame such as raised line or direction recess that leads with the body of rod 13 with the body of rod 13, fixed mount 9.
The mode that above-described combination is fixed passes through the realizations such as interference fit, binding agent bonding or hot melting way according to designing requirement.
Below according to use procedure, present invention is described:
1, pull up block 1, blood taking needle 4 handle bar is inserted needle stand 3, twists off the helmet of blood taking needle 4, then cover block 1;
2, foot piece 15 is pulled back, compression reseting pressuring spring B19, drive spring retainer hoop B12, piston ejector ram, ejector piston 8 move backward, compression percussion stage clip 17, compressing is removed after the free end 803 of the elastic arm 802 of piston ejector ram, ejector piston 8 slips into the lock slots 901 of fixed mount 9, free end 803 and lock slots 901 coordinate and lock and contact with the bottom of trigger key 10 is free, piston ejector ram, ejector piston 8 is in and launches SBR;
3, before blood sampling puncture, according to the situation of patient, by rotating indicating sleeve 2, the movable paracentesis depth regulating blood taking needle 4 of block 1 is driven;
4, the needle outlet 101 of block 1 aligning is treated site of puncture, press trigger key 10, the free end 803 of compressing elastic arm 802 inwardly slides until to go out of lock state with lock slots 901, percussion stage clip 17 promotes piston ejector ram, ejector piston 8 and launches forward, the rear end of further percussion push rod 7, push rod 7 drives needle stand 3 and blood taking needle 4 to travel forward, and compresses reseting pressuring spring A16 simultaneously, and blood taking needle 4 forward tip 401 implements via of short duration the passing of needle outlet 101 of block 1 operation of puncturing.Along with launching forward of piston ejector ram, ejector piston 8, have compressed withdraw of the needle stage clip 18, under the effect of withdraw of the needle stage clip 18, piston ejector ram, ejector piston 8 stops forward and draws back getting back to initial position; Needle stand 3 and blood taking needle 4 then return reset under the effect of reseting pressuring spring A16;
5, after operator completes sample of blood, drawn, driven forward foot piece 15, drives knock-pin 14 synchronously to travel forward, and promotes blood taking needle 4 and travels forward, until the handle bar 402 of blood taking needle 4 departs from needle stand 3 completely, block 1 also departs from bar head 6 simultaneously;
6, discharge foot piece 15, withdraw of the needle stage clip 18 is removed compressing promotion foot piece 15 and is got back to free state, and new blood taking needle 4 is inserted into needle stand 3 according to step 1, and covers new block 1, prepares to puncture next time.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. alleviate the sting device of pain, comprise blood taking needle (4), bar head (6), the body of rod (13) and foot piece (15), described bar head (6) is fixed on the front end of the body of rod (13), and the rear end of the body of rod (13) is located at by foot piece (15), is provided with and launches assembly in the body of rod (13), the described assembly that launches comprises piston ejector ram, ejector piston (8), described piston ejector ram, ejector piston (8) is movably connected on fixed mount (9), described fixed mount (9) is fixed on the body of rod (13) inwall, described piston ejector ram, ejector piston (8) is arranged with from front to back respectively percussion spring (17), back-moving spring B(19), and be located at the spring retainer hoop at piston ejector ram, ejector piston (8) two ends, it is characterized in that: in described bar head (6), be connected with needle stand (3), the handle bar (402) of blood taking needle (4) is connected in needle stand (3), the push rod (7) that described piston ejector ram, ejector piston (8) front end is communicated with facing to needle stand (3) rear end, percussion spring (17) and back-moving spring B(19) between be provided with withdraw of the needle spring (18), spring housing (11), described foot piece (15) is fixedly connected with spring housing (11), foot piece (15) intracavity is provided with knock-pin (14), and knock-pin (14) front end is facing to handle bar (402) rear end of blood taking needle (4).
2. the sting device alleviating pain according to claim 1, it is characterized in that: side, described needle stand (3) middle part is provided with I-shaped elastic joint (301), the external diameter of described I-shaped elastic joint (301) position is less than the external diameter of needle stand (3) front and back end, its internal diameter is slightly less than the internal diameter of front end, the handle bar (402) of blood taking needle (4) inserts needle stand (3) intracavity, extends I-shaped elastic joint (301) position, is fixedly connected with by interference fit.
3. the sting device alleviating pain according to claim 1 and 2, is characterized in that: described needle stand (3) outer surface and bar head (6) inwall are provided with guide frame, and guide frame coordinates guiding needle stand (3) to move axially.
4. the sting device alleviating pain according to claim 1, is characterized in that: the percussion spring (17) be placed on piston ejector ram, ejector piston (8) is positioned at fixed mount (9), and piston ejector ram, ejector piston (8) coordinates with two stomidiums of fixed mount (9) and moves axially.
5. the sting device alleviating pain according to claim 1, it is characterized in that: bar head (6) inner chamber is provided with spacing ring A(601), spacing ring A(601) bar head (6) inner chamber is divided into ante-chamber and back cavity, described needle stand (3) is positioned at ante-chamber, described push rod (7) is positioned at bar head (6) back cavity, and push rod (7) front end is communicated in needle stand (3); Be positioned on the push rod (7) of bar head (6) back cavity, the stroke limit abutment (701) of needle stand (3) is provided with successively to piston ejector ram, ejector piston (8) direction, reseting pressuring spring A(16) spacing projection (702), described reseting pressuring spring A(16) be placed on the push rod (7) of spacing projection (702) front end.
6. the sting device alleviating pain according to claim 1, is characterized in that: described spring housing is provided with spacing ring B(1101 in (11)), by withdraw of the needle spring (18) and back-moving spring B(19) spaced apart; Spring housing (11) outside is provided with defining flange (1102), and described foot piece (15) inner chamber is provided with spacing ring C(1501), both are connected and fixed coupling.
7. the sting device alleviating pain according to claim 1, it is characterized in that: the end winding support of described knock-pin (14) is in foot piece (15) rear end inwall, knock-pin (14) penetrates piston ejector ram, ejector piston (8) and push rod (7) cavity, and its front end is facing to handle bar (402) rear end of blood taking needle (4).
8. the sting device alleviating pain according to claim 7, is characterized in that: described foot piece (15) rear end inwall is provided with pillar (1503), and knock-pin (14) is fixedly connected with pillar (1503).
9. the sting device alleviating pain according to claim 1, it is characterized in that: the upper movable sleeve of bar head (6) is provided with indicating sleeve (2), described indicating sleeve (2) outer surface is provided with axially anti-skidding striped A(203), and be equidistantly provided with the home block of display paracentesis depth, described home block is divided into main explicit identification block (201) and secondary explicit identification block (202), and main explicit identification block (201) and secondary explicit identification block (202) interval are arranged; Described main explicit identification block (201) length increases successively, and secondary explicit identification block (202) length is consistent, and is shorter than the shortest main explicit identification block (201); Wherein paracentesis depth is that the home block front end area of intermediate value is without anti-skidding striped A(203).
10. the sting device alleviating pain according to claim 9, it is characterized in that: indicating sleeve (2) front end sleeve is provided with block (1), described block (1) adopts transparent material to make, outside block (1) opening, be provided with protruding ring (102), described protruding ring (102) external diameter is greater than indicating sleeve (2) external diameter.
11. sting devices alleviating pain according to claim 1, it is characterized in that: described piston ejector ram, ejector piston (8) rear portion is provided with limited block C(804), limited block C(804) rear end domatic for importing, limited block C(804 is located at by spring retainer hoop (12)) on the piston ejector ram, ejector piston (8) of front end.
12. sting devices alleviating pain according to claim 1, is characterized in that: axially anti-skidding striped B(1502 is established on described foot piece (15) surface).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410068802.6A CN103767713B (en) | 2014-02-28 | 2014-02-28 | Puncture device causing less pain |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410068802.6A CN103767713B (en) | 2014-02-28 | 2014-02-28 | Puncture device causing less pain |
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| CN103767713A CN103767713A (en) | 2014-05-07 |
| CN103767713B true CN103767713B (en) | 2015-04-01 |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104068866B (en) * | 2014-07-03 | 2016-01-13 | 天津华鸿科技有限公司 | A kind of blood collecting pen cap for brush preventing blood taking needle from shaking |
| CN104858900A (en) * | 2015-05-13 | 2015-08-26 | 何鹏 | Clamping groove type blade catapult |
| CN106859670A (en) * | 2017-04-07 | 2017-06-20 | 王振民 | The anti-frightened anti-pollution safe strength blood taking needle of hypodynia sense brace type |
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| CN203724106U (en) * | 2014-02-28 | 2014-07-23 | 项明亮 | Pain relieving puncture device |
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