CN203724106U - Pain relieving puncture device - Google Patents
Pain relieving puncture device Download PDFInfo
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- CN203724106U CN203724106U CN201420086411.2U CN201420086411U CN203724106U CN 203724106 U CN203724106 U CN 203724106U CN 201420086411 U CN201420086411 U CN 201420086411U CN 203724106 U CN203724106 U CN 203724106U
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Abstract
The utility model discloses a pain relieving puncture device comprising a blood collecting needle, a rod head, a rod and a tail rod. The rod head is fixed at the front end of the rod, the tail rod is arranged at the rear end of the rod, a catapult component is arranged in the rod, a needle seat is movably connected into the rod head, a handle rod of the blood collecting needle is connected into the needle seat, and the front end of a catapult rod of the catapult component faces an ejecting rod communicated with the rear end of the needle seat. According to the structure, the pain relieving puncture device has the advantages that the blood collecting needle is separated from the needle seat through the catapult component, deviation and vibration produced by the catapult device during catapult can be eliminated during the transmission process with the needle seat, the blood collecting needle is prevented from deviation and vibration while contacting with the skin, the pain of a patient is reduced; in addition, by means of the optimized design of an indicating sleeve and the tail rod, risks of infection of an operation are reduced, operating efficiency is improved, and manufacture cost is reduced.
Description
Technical field
This utility model relates to medical diagnosis technique with the apparatus field, is specifically related to a kind of Centesis instrument that can alleviate the micro blood sample collection of particular patient pain.
Background technology
Quantitative assay for Related Component in human body fluid in modern medicine is very general, for example, for specific patient, need to glucose in blood, lactate, cholesterol and bilirubin etc. be monitored, be analyzed.Early stage operator uses independently the blood taking needle patient skin that manually punctures to form a wound and gather blood sample, and the method has higher specification requirement and certain mental pressure for operator and particular patient, and patient keenly feels greatly.
On March 12nd, 1985, United States Patent (USP) disclosed a kind of sting device No. 4503856, this device has a tube-like envelope, one is arranged in slidably blood-taking needle holder of shell, to provide, clamper is pushed forward to the strength in the perforation position of skin with a compressible spring, 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, United States Patent (USP) disclosed a kind of sting device No. 4527561, this device includes second spring to regain blood-taking needle holder (also can referring to United States Patent (USP) the 4535769th and No. 4553541) after lancet penetrates user skin, further perfect sting device.
Other are representative improves as nineteen ninety December United States Patent (USP) on the 11st discloses a kind of blood lancet device No. 4976724, and this device comprises that a kind of mechanism can allow user penetrate the blood taking needle using and get along well that its contacts.And for example on June 7th, 1994, United States Patent (USP) disclosed a kind of blood lancet device No. 5318584, increased paracentesis depth and control to have adjusted function, this device comprise a kind of rotation, slip transmission system can in the situation that adjustable, repeatably penetration depth and less misery are carried out puncture.
Although the multiple same device that sting device and the blood collecting pen of take are title is constantly improving or upgrading distortion, mainly relate to the selecting of component materials, configuration design, its basic functional principle is that side kayser ejection mechanism does not have basic change.This structure has a feature, and there is the lancet holder of a prolongation at device center.While entering percussion SBR, lancet holder ad hoc structure coordinates with the structure kayser of being located at device sidewall, when operating, operator presses the trigger unit of projecting device appearance, kayser status releasing, and lancet holder automatically resets after having launched forward puncture operation.To be lancet holder ad hoc structure remove while contacting with the latching structure of being located at device sidewall its deficiency, cause lancet holder distortion or lateral deviation, and then inevitably make to be assembled in the synchronous lateral deviation of blood taking needle of lancet holder front end, when blood taking needle moves forward in free state, the inevitable opposite direction to distortion resets, traveling priority vertically while so causing blood taking needle to launch to target site, the fact is a kind of movement in a curve track, skin puncture inevitable needle point shake of moment causes the larger stimulation of subcutaneous teleneuron and wound is expanded, increase patient's pain and the probability of infection.
In addition, there is the loaded down with trivial details problem of using in existing sting device.For preventing different patient's cross infections, blood taking needle matching used with it is disposable use, the blood taking needle that therefore every subjob need to more renew.Complete after the collection of one-time puncture blood sample, blood taking needle must be removed from sting device, its method has two kinds: the one, and direct hand-driven moving removes, operator's fingerhold completes the blood taking needle of puncture operation it is forced to extract from keeper, 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; The 2nd, utilize the pressure ejecting device of being located on sting device to remove, this pressure ejecting device is generally push rod or the collar that is attached to sting device outside, and be connected as a single entity and extend to the member of blood taking needle keeper bottom with push rod or the collar, not only modular construction is complicated for it, assembling is complicated, easily damage, affect product attractive in appearance, and removing more loaded down with trivial detailsly, it is sequentially:---operation push rod or the collar travel forward and force to release the manually retracted push rod of blood taking needle-----or the collar to remove Cang Gai (rotation or drawing).In use procedure, operator needs repeatedly spiral installation or removal 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 of rotation indicating sleeve and post-tensioning foot piece, need to increase the frictional force of parts and operator's hand, existing structure is on functional unit, to establish recess or bulge loop, but the mould of this structure is complicated, has increased the production cost of product.
Summary of the invention
The purpose of this utility model is: overcome the deficiencies in the prior art, a kind of sting device that alleviates pain is provided, by catapult-launching gear is separated with the needle stand of blood taking needle, the skew shake producing when catapult-launching gear is launched is interrupted in the transmission process with needle stand, prevent blood taking needle with contact skin process in produce shake or occur shift phenomenon, reduce patient's pain; Improvement by indicating sleeve and foot piece designs in addition, has further reduced the danger that operator infects, and improves working performance, reduces manufacturing cost.
Technical solution adopted in the utility model 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 foot piece is located at the rear end of the body of rod, 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, on described piston ejector ram, ejector piston, be arranged with respectively from front to back percussion spring, back-moving spring B, and the spring position-limited hoop of being located at piston ejector ram, ejector piston two ends, in described bar head, be connected with needle stand, 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 utility model scheme is, described needle stand middle part one 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, by interference fit, is fixedly connected with.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 inserts needle stand and passes through I-shaped elastic joint and fixes, I-shaped elastic joint can outwards be heaved, because the external diameter of I-shaped elastic joint position is less than the external diameter of needle stand front and back end, can prevent that I-shaped elastic joint and the bar head inwall heaved from interfering, impact is normally used.
Further improvement project of the present utility model 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 utility model is, the percussion spring being placed on piston ejector ram, ejector piston is positioned at fixed mount, and piston ejector ram, ejector piston coordinates and moves axially with two stomidiums of fixed mount.
Further improvement project of the present utility model is, described bar head inner chamber is provided with spacing ring A, and spacing ring A is divided into ante-chamber and back cavity by bar head inner chamber, 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 stretches out from nose; Be positioned on the push rod of bar head back cavity, to piston ejector ram, ejector piston direction, be provided with successively the stroke limit boss of needle stand, 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 utility model is, is provided with spacing ring B in described spring housing, and withdraw of the needle spring and back-moving spring B is spaced apart; Spring housing outside is provided with defining flange, and described foot piece inner chamber is provided with spacing ring C, and both are connected and fixed coupling.
Further improvement project of the present utility model is, on described bar head, movable sleeve is provided with indicating sleeve, described indicating sleeve outer surface is provided with axial anti-skidding striped A, and be equidistantly provided with the home block that shows paracentesis depth, described home block is divided into main explicit identification piece and secondary explicit identification piece, and main explicit identification piece and secondary explicit identification block gap arrange; 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 piece; The home block front end area that wherein paracentesis depth is intermediate value is without anti-skidding striped A.
Further improvement project of the present utility model is, described indicating sleeve front end sleeve is provided with block, and described block adopts transparent material to make, and at the front end of blocking a shot, is provided with needle outlet, in block opening outside, be provided with protruding ring, described protruding ring external diameter is greater than indicating sleeve external diameter.
Further improvement project of the present utility model 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 position-limited hoop B is located on the piston ejector ram, ejector piston of limited block C front end.
Further improvement project of the present utility model is that axial anti-skidding striped B is established on described foot piece surface.
The beneficial effects of the utility model are:
The first, the sting device that alleviates pain of the present utility model, by catapult-launching gear is separated with the needle stand of blood taking needle, the skew shake producing when catapult-launching gear is launched is interrupted in the transmission process with needle stand, prevent that blood taking needle needle point from, contact the phenomenon of peripheral nerve with producing shake or appearance skew in contact skin process, reducing patient's pain better.
The second, the sting device that alleviates pain of the present utility model, by promoting to make disposable blood taking needle and the block of removing before foot piece, has further reduced the danger that operator infects, and having simplified blood sampling operation, improves working performance.
Three, the sting device that alleviates pain of the present utility model, by indicating sleeve and foot piece are improved to design, has simplified mould structure, reduces manufacturing cost.
accompanying drawing explanation:
Fig. 1 is this utility model embodiment axonometric chart.
Fig. 2 is this utility model embodiment cutaway view.
Fig. 3 is this utility model embodiment three-dimensional exploded view.
Fig. 4 is the axonometric chart of blocking a shot in this utility model.
Fig. 5 is indicating sleeve axonometric chart in this utility model.
Fig. 6 is needle stand axonometric chart in this utility model.
Fig. 7 is adjustable ring axonometric chart in this utility model.
Fig. 8 is this utility model king-rod head axonometric chart.
Fig. 9 is push rod axonometric chart in this utility model.
Figure 10 is piston ejector ram, ejector piston axonometric chart in this utility model.
Figure 11 is fixed mount axonometric chart in this utility model.
Figure 12 is this utility model medi-spring cover axonometric chart.
Figure 13 is body of rod axonometric chart in this utility model.
Figure 14 is foot piece axonometric chart in this utility model.
the specific embodiment:
Foregoing of the present utility model does not really want to present each embodiment of the present utility model or each aspect.Detailed description and drawings clear that extra feature and advantage of the present utility model can be set forth from below are found out.
Shown in Fig. 1 ~ Figure 14, this utility model comprises blood taking needle 4, bar head 6, the body of rod 13 and foot piece 15, and described bar head 6 is fixed on the front end of the body of rod 13, and foot piece 15 is located at the rear end of the body of rod 13, in the body of rod 13, is provided with and launches assembly; 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 inwalls, on described piston ejector ram, ejector piston 8, be arranged with respectively from front to back percussion spring 17, back-moving spring B19, and the spring position-limited hoop of being located at piston ejector ram, ejector piston 8 two ends, in described bar head 6, be connected with needle stand 3, 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 ends are communicated with facing to needle stand 3 rear ends; 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 are provided with knock-pin 14, and knock-pin 14 front ends are facing to handle bar 402 rear ends of blood taking needle 4.
Described needle stand 3 middle part one sides are provided with I-shaped elastic joint 301, the external diameter of described I-shaped elastic joint 301 positions is less than the external diameter of needle stand 3 front and back ends, 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 positions, by interference fit, is fixedly connected with.Wherein I-shaped elastic joint 301 can be so that the handle bar 402 of blood taking needle 4 fixing than the elastic joint of other form, in addition, after blood taking needle 4 inserts needle stand 3 and passes through I-shaped elastic joint 301 and fixes, I-shaped elastic joint 301 can outwards be heaved, because the external diameter of I-shaped elastic joint 301 positions is less than the external diameter of needle stand front and back end, can prevent that the I-shaped elastic joint 301 of heaving from interfering with bar head 6 inwalls, impact is normally used.
Described needle stand 3 outer surfaces and bar head 6 inwalls are provided with guide frame, and guide frame coordinates guiding needle stand 3 to move axially.
Described guide frame comprises the set direction recess A302 of needle stand 3 outer surfaces, the corresponding set guiding raised line A603 of bar head front inner wall, or hub outer surface is established guiding raised line B, the corresponding direction recess B(accompanying drawing of establishing of bar head front inner wall does not mark), 6 assembling of needle stand 3 insertion rods, direction recess A302 and guiding raised line A603 coordinate 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 being placed on piston ejector ram, ejector piston 8 is positioned at fixed mount 9, and piston ejector ram, ejector piston 8 coordinates and moves axially with two stomidiums of fixed mount 9.
Described piston ejector ram, ejector piston 8 front ends are provided with spring position-limited hoop A801 and elastic arm 802, are provided with lock hole 901 with the fixed mount 9 of elastic arm 802 corresponding positions; Elastic arm 802 is limited in the lock hole 901 of fixed mount 9, or stretches out fixed mount 9 front ends, and when elastic arm 802 is limited in lock hole 901, its triggering button 10 set with the body of rod 13 is corresponding.
Described triggering button 10 is located in the cavity forming between fixed mount 9 and the body of rod 13 inwalls, and protruding from key hole 1301, and the free end 803 of described elastic arm 802 contacts with the bottom of triggering button 10.
On the described body of rod 13, be positioned at key hole 1301 front ends and be provided with indication key 1302, described indication key 1302 is pointed to the home block of indicating sleeve 2.By the indication of 1302 pairs of home blocks of indication key, can select intuitively the paracentesis depth of blood taking needle.
Described fixed mount 9 inner chamber cross-sectional structures match with the structure that spring position-limited hoop A801 and elastic arm 802 form, or fixed mount 9 inner chambers and spring position-limited hoop A801 corresponding set guiding raised line B and direction recess coupling B (accompanying drawing does not mark) respectively vertically, guiding piston ejector ram, ejector piston 8 and elastic arm 802 move axially.
Bar head 6 inner chambers are provided with spacing ring A601, and spacing ring A601 is divided into ante-chamber and back cavity by bar head 6 inner chambers, and described needle stand 3 is positioned at ante-chamber, and described push rod 7 is positioned at bar head 6 back cavities, and push rod 7 front ends are communicated in needle stand 3, and the front end of needle stand 3 stretches out from bar head 6 front ends; Be positioned on the push rod 7 of bar head 6 back cavities, to piston ejector ram, ejector piston 8 directions, be provided with successively the stroke limit boss 701 of needle stand 3, 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 ends.
In described spring housing 11, be provided with spacing ring B1101, withdraw of the needle spring 18 and back-moving spring B19 is spaced apart; Spring housing 11 outsides are provided with defining flange 1102, and described foot piece 15 inner chambers are provided with spacing ring C1501, and both are connected and fixed coupling.
Foot piece 15 rear end inwalls are fixed in the end of described knock-pin 14, and knock-pin 14 penetrates piston ejector ram, ejector piston 8 and push rod 7 cavitys, and its front end is facing to handle bar 402 rear ends of blood taking needle 4.
Described foot piece 15 rear end inwalls are 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 surfaces are provided with axial anti-skidding striped A203, and be equidistantly provided with the home block that shows paracentesis depth, described home block is divided into main explicit identification piece 201 and secondary explicit identification piece 202, and main explicit identification piece 201 and secondary explicit identification piece 202 intervals arrange; Described main explicit identification piece 201 length increase successively, and secondary explicit identification piece 202 length are consistent, and are shorter than the shortest main explicit identification piece 201; The home block front end area that wherein paracentesis depth is intermediate value is without anti-skidding striped A203, and by the cooperation of main explicit identification piece 201 and secondary explicit identification piece 202, the observation of being convenient to user is used; Anti-skidding striped A203 is convenient to the operation of user, improves operating efficiency.
On described bar head 6, be arranged with adjustable ring 5, indicating sleeve 2 is fixing with adjustable ring 5 combinations, bar head 6 surfaces are along circumferential set chute 602, the set slide block of the corresponding chute 602 of adjustable ring 5 inwalls, described chute 602 is helical structure, by rotation indicating sleeve 2, drive adjustable ring 5 to do axially-movable simultaneously, indicating sleeve 2 is moved axially along 6 rotations of bar head simultaneously.
Described indicating sleeve 2 inwalls are provided with locating convex block 204, adjustable ring 5 correspondences are provided with locating notch 501, adjustable ring 5 is by 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 sleeves are provided with block 1, described block 1 adopts transparent material to make, at block 1 front end, be provided with needle outlet 101, in block 1 opening outside, be provided with protruding ring 102, described protruding ring 102 external diameters are greater than indicating sleeve 2 external diameters, protruding ring 102 is the force section of block 1 dismounting, and convenient operation person, to blocking a shot 1 dismounting, increases work efficiency.
Described piston ejector ram, ejector piston 8 rear portions are provided with limited block C804, and the rear end of limited block C804 is domatic for importing, and spring position-limited hoop B12 is located on the piston ejector ram, ejector piston 8 of limited block C804 front end.
Axial anti-skidding striped B1502 is established on described foot piece 15 surfaces.By anti-skidding striped B1502, can increase the frictional force of user finger and foot piece 15, convenient operation.
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 all positions fixing by guide frames such as guiding raised line or direction recess with the body of rod 13, fixed mount 9 with the body of rod 13.
The fixing mode of above-described combination is passed through the realizations such as interference fit, binding agent bonding or hot melting way according to designing requirement.
According to use procedure, this utility model is described below:
1, pull up block 1, blood taking needle 4 handle bars are inserted to needle stand 3, twist 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 position-limited hoop B12, piston ejector ram, ejector piston 8 to move backward, compression percussion stage clip 17, the free end 803 of the elastic arm 802 of piston ejector ram, ejector piston 8 slips into the rear releasing compressing of lock slots 901 of fixed mount 9, free end 803 coordinates locking with lock slots 901 and contacts with the bottom of triggering button 10 is free, makes piston ejector ram, ejector piston 8 in launching SBR;
3,, before blood sampling puncture, according to patient's situation, by rotation indicating sleeve 2, drive block 1 to move forward and backward the paracentesis depth that regulates blood taking needle 4;
4, the needle outlet of block 1 101 is aimed at and treated site of puncture, press and trigger button 10, the free end 803 of compressing elastic arm 802 inwardly slide until with lock slots 901 state that goes out of lock, percussion stage clip 17 promotes piston ejector ram, ejector piston 8 and launches forward, further pull the trigger the rear end of push rod 7, push rod 7 drives needle stands 3 and blood taking needle 4 to travel forward, and compresses reseting pressuring spring A16 simultaneously, and blood taking needle 4 front end needle points 401 pass to implement via the needle outlet 101 of block 1 is of short duration the operation of puncturing.Along with launching forward of piston ejector ram, ejector piston 8, 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 and get back to initial position; Needle stand 3 and blood taking needle 4 are return reset under the effect of reseting pressuring spring A16;
5, operator completes after sample of blood, drawn, promotes 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 a shot 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 puncture next time.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for a person skilled in the art, this utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
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 foot piece (15) is located at the rear end of the body of rod (13), in the body of rod (13), is provided with and launches assembly, 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, on described piston ejector ram, ejector piston (8), be arranged with respectively from front to back percussion spring (17), back-moving spring B(19), and the spring position-limited hoop of being located 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, at 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 that alleviates pain according to claim 1, it is characterized in that: described needle stand (3) middle part one 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, by interference fit, is fixedly connected with.
3. the sting device that alleviates 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 that alleviates pain according to claim 1, is characterized in that: the percussion spring (17) being placed on piston ejector ram, ejector piston (8) is positioned at fixed mount (9), and piston ejector ram, ejector piston (8) coordinates and moves axially with two stomidiums of fixed mount (9).
5. the sting device that alleviates 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, to piston ejector ram, ejector piston (8) direction, be provided with successively the stroke limit boss (701) of needle stand (3), 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 that alleviates 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 that alleviates pain according to claim 1, it is characterized in that: foot piece (15) rear end inwall is fixed in the end of described knock-pin (14), 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 that alleviates 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 that alleviates 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 axial anti-skidding striped A(203), and be equidistantly provided with the home block that shows paracentesis depth, described home block is divided into main explicit identification piece (201) and secondary explicit identification piece (202), and main explicit identification piece (201) and secondary explicit identification piece (202) interval arrange; Described main explicit identification piece (201) length increases successively, and secondary explicit identification piece (202) length is consistent, and is shorter than the shortest main explicit identification piece (201); The home block front end area that wherein paracentesis depth is intermediate value is without anti-skidding striped A(203).
10. the sting device that alleviates 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, in block (1) opening outside, be provided with protruding ring (102), described protruding ring (102) external diameter is greater than indicating sleeve (2) external diameter.
11. sting devices that alleviate 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 is domatic for importing, and spring position-limited hoop (12) is located at limited block C(804) on the piston ejector ram, ejector piston (8) of front end.
12. sting devices that alleviate pain according to claim 1, is characterized in that: axial anti-skidding striped B(1502 is established on described foot piece (15) surface).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420086411.2U CN203724106U (en) | 2014-02-28 | 2014-02-28 | Pain relieving puncture device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420086411.2U CN203724106U (en) | 2014-02-28 | 2014-02-28 | Pain relieving puncture device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203724106U true CN203724106U (en) | 2014-07-23 |
Family
ID=51194218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420086411.2U Withdrawn - After Issue CN203724106U (en) | 2014-02-28 | 2014-02-28 | Pain relieving puncture device |
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| Country | Link |
|---|---|
| CN (1) | CN203724106U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103767713A (en) * | 2014-02-28 | 2014-05-07 | 项明亮 | Puncture device causing less pain |
| CN113598765A (en) * | 2021-07-27 | 2021-11-05 | 天津云帆医疗器械有限公司 | Blood sampling pen |
-
2014
- 2014-02-28 CN CN201420086411.2U patent/CN203724106U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103767713A (en) * | 2014-02-28 | 2014-05-07 | 项明亮 | Puncture device causing less pain |
| CN113598765A (en) * | 2021-07-27 | 2021-11-05 | 天津云帆医疗器械有限公司 | Blood sampling pen |
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Granted publication date: 20140723 Effective date of abandoning: 20150401 |
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| RGAV | Abandon patent right to avoid regrant |