CN110464363A

CN110464363A - Reduce the blood collecting pen for puncturing pain

Info

Publication number: CN110464363A
Application number: CN201910676153.0A
Authority: CN
Inventors: 陈亮; 张千
Original assignee: HUAIAN TIANDA MEDICAL INSTRUMENTS CO Ltd
Current assignee: HUAIAN TIANDA MEDICAL INSTRUMENTS CO Ltd
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2019-11-19

Abstract

The present invention relates to medical auxiliary equipment field, disclose that a kind of to reduce the blood collecting pen for puncturing pain including a Duan Bitou, two sections of nibs, pen core, pen container, shell, one section of tail and the two sections of tails coaxially assembled further include elastic emission press piece；It is additionally provided with raised thin slice on pen core, between blood sampling needle tray and limit convex shoulder, offers limit guide groove engaged therewith at pen container inner wall position corresponding with raised thin slice, raised thin slice is slidably connected with limit guide groove.Blood collecting pen in the present invention is in puncture process, due in the overshoot of transmitting blood taking needle, raised thin slice on pen core can move linearly rapidly using the limit guide groove of pen container inner wall as linear guide, pen core is avoided to shake and deviate when moving, and then the transmission path of blood taking needle in blood sampling needle tray at the top of pen core is avoided to shake and deviate, enable blood taking needle really to carry out straight line puncture, reduces pain when patient punctures.

Description

Reduce the blood collecting pen for puncturing pain

Technical field

The present invention relates to medical auxiliary equipment fields, in particular to a kind of to reduce the blood collecting pen for puncturing pain.

Background technique

Currently, medical institutions are generally directly taken a blood sample with blood taking needle in conventional blood collection, though this method energy one people, one needle, no By cross-infection, but patient is immediately seen syringe needle, generates the feared state of mind (especially children).When another kind blood sampling, blood taking needle is taken It is used cooperatively by blood collecting pen, by blood taking needle loaded in blood collecting pen, removes blood taking needle after transmitting needle thorn, load onto another blood taking needle It reuses.Blood collecting pen is a kind of and matching used blood-taking device of disposable blood taking needle, and wherein blood collecting pen is reusable, and Blood taking needle is only disposable in order to avoid cross infection.The development of blood collecting pen has many decades history, wherein to blood collecting pen Improvement be also evolving.

Blood collecting pen is mainly made of pen cap, penholder, trigger mechanism etc., and pen cap is assemblied in penholder, and blood sampling is provided in penholder Needle trigger mechanism.Under normal conditions, the use operating procedure of this kind of blood collecting pen is as follows: the first step dismantles pen cap；Second step is by one In secondary property blood taking needle inserting to the needle stand of penholder front end；Pen cap is installed on penholder by third step again；4th step will be on blood taking needle Thorax；5th step is directed at blood sampling site push button and emits blood taking needle puncture blood collecting.

Current blood collecting pen structure, during puncture blood collecting, often will appear the offset of blood taking needle transmission path causes It shifts when blood taking needle is inserted into human skin when puncture, increases patient pain, it would be highly desirable to which patient's pain can be reduced by inventing one kind The blood collecting pen of sense minimizes pain of the patient when puncturing.

Summary of the invention

Goal of the invention: aiming at the problems existing in the prior art, the present invention provides a kind of blood collecting pen for reducing and puncturing pain, It avoids patient from seeing syringe needle when blood sampling, prevents from causing the feared state of mind, can effectively avoid cross-infection, using simplicity, structure is simple, Securely and reliably.

Technical solution: the present invention provides it is a kind of reduce puncture pain blood collecting pen, including coaxially assemble a Duan Bitou, Two sections of nibs, pen core, pen container, shell, one section of tail and two sections of tails, further include elastic emission press piece；One section of nib with Described two sections written top connections, two sections of written bottoms are connect with the screw top of the pen container, the pen container set It is located at outside the pen core, one section of pen tail cap is located at pen container outer wall lower part, and the top of the pen core is positioned at described In pen container, lower part is located in one section of tail；The outer wall of two sections of tails and one section of tail is arranged buckle；Described The outer wall of pen core is arranged with the first spring in the pen container and the second spring in one section of tail, and described One spring is located between limit convex shoulder and the bottom wall of the pen container of the pen core, and the second spring is located at one section of tail Inner wall convex shoulder and the pen core bottom convex block between；The bottom of the elastic emission press piece is fixed in described shell, top Portion is exposed to outside described shell, for the blood taking needle being located in the blood sampling needle tray at the top of the pen core to be emitted to one section of pen Outside the open top end of head；Raised thin is additionally provided on the pen core, between the blood sampling needle tray and the limit convex shoulder Piece offers limit guide groove engaged therewith, the protrusion at pen container inner wall position corresponding with the protrusion thin slice Thin slice is slidably connected with the limit guide groove.

Further, it further includes three Duan Bitou that the described reduction, which punctures the blood collecting pen of pain, the third section nib it is interior Wall bottom has thread, and one section of written outer wall has thread tracks, and three sections of nibs are set in a Duan Bitou It outer wall and is threadedly coupled with the thread tracks by the thread.In order to controlling paracentesis depth, three Duan Bitou are provided with, When connecting precession by thread tracks between three sections of nibs and two sections of nibs, the distance of precession is bigger, then blood taking needle is worn Thorn depth is deeper, and the distance of precession is smaller, then paracentesis depth is more shallow；

Further, several vertical convex ribs with equidistant circle distribution at the top of described three sections written inner walls, described one section The outer wall two sides of nib are symmetrically arranged with the limit salient point that can be stuck between the vertical convex rib two-by-two；As three Duan Bitou When around the thread tracks precession of described one section written outer wall, the limit salient point can cross each vertical convex rib.Pass through three Cooperation between the vertical convex rib of the equidistant circle distribution of Duan Bitou inner wall and the limit salient point of one section of written outer wall, in precession In the process, as soon as limit salient point often crosses a vertical convex rib, the distance of precession will increase a unit, vertical convex rib and limit convex The cooperation of point enables to being equidistant for each precession, being capable of effective quantified controlling paracentesis depth.

Further, circumference spaced set and each vertical convex rib are gone back within written bottom outer wall one week at described three sections Corresponding paracentesis depth graduation mark.Limit salient point often crosses a vertical convex rib, and three sections of nibs will be to one section of written precession more Further, then paracentesis depth when blood taking needle emits then can be deeper, paracentesis depth scale corresponding with convex ribs longitudinally in each Line then can intuitively show the depth of puncture, and very convenient medical staff uses.

Preferably, three sections of written bottoms are between one section of nib and two sections of nibs, and described two sections The upper edge of nib opens up the reading window for showing the paracentesis depth graduation mark.The design of window is read so that medical staff Easily facilitate the depth for reading and puncturing at that time.

Further, it is additionally provided on described three sections written inner walls, between each vertical convex rib and the thread vertical To convex ribs are prevented, it is additionally provided with prevention salient point on one section of written outer wall, when three sections of nibs are around one section of pen After a week, the prevention salient point is effectively contacted with longitudinal prevention convex ribs just for the thread tracks precession of head outer wall.Longitudinal resistance Only the design of convex ribs and prevention salient point is so that three sections of nibs at most can only threadingly track be rotated by 360 ° around one section of nib, with control The upper limit of paracentesis depth.

Further, it further includes unloading needle push rod that the described reduction, which punctures the blood collecting pen of pain, it is described unload needle push rod with it is described The side wall of pen core is arranged in parallel and is located at immediately below the through-hole of the blood taking needle groove bottom wall, and its top is stuck in the through-hole, Bottom end side, which is fixedly connected with, unloads needle handle, and the needle handle that unloads is between two sections of nibs and the outer wall of described shell. After the completion of blood sampling is primary, blood taking needle can be retracted in blood sampling needle tray, and the depth for needle tray of taking a blood sample is generally high compared with the length of blood taking needle, no It is convenient that blood taking needle is manually taken out to replacement out of it, so needle push rod is unloaded in setting in the application；After the completion of blood sampling, by one section of pen Head and two sections of nibs disassemble, and both can will unload needle push rod by unloading needle handle and above push away, and unload and pass through blood taking needle when needle push rod moves up The blood taking needle taken a blood sample in needle tray is above pushed away after the through-hole of trench bottom, exposes the upper of blood sampling needle tray when blood taking needle is unloaded needle push rod and shifted onto The blood taking needle after use can be easily taken out after, then needle push rod will be unloaded by unloading needle handle again and be displaced downwardly to blood taking needle Below slot, be then put into new blood taking needle into blood sampling needle tray again, then by one section of nib and two sections of nibs again with pen container spiral shell Line connection, waiting are taken a blood sample next time.

Further, second spring is also arranged in the lower section of first spring, the outer wall of the pen core, described second Spring is located between the inner wall convex shoulder and the convex block of one section of tail.One section of tail is being connected to pen core by two sections of tails While post-tensioning, second spring can be compressed, and after blood taking needle is launched into one section of written open end, second spring can be sent out Pen core connection blood taking needle is quickly retracted into one section of nib by raw rebound again, and the needle point of such blood taking needle would not expose One Duan Bitou prevents from being seen blood taking needle by patient, reduces fear.

Further, the inner wall of the elastic emission press piece has salient point, on the pen core, the blood sampling needle tray with it is described Limiting also has elastic emission convex block between convex shoulder；Before the blood taking needle is launched, the elastic emission convex block is stuck in described The inner wall convex block bottom of pen container, elastic emission convex block described in the salient point face；After the pen core is launched, the elasticity hair It penetrates convex block to be detached from the bottom of the inner wall convex block and be moved to its top, the salient point is located at the elastic emission underbump. When needing to emit blood taking needle, elastic emission press piece is pressed, salient point can then press elastic emission convex block, keep elastic emission convex block de- Inner wall convex block bottom from pen container, then pen core moves up rapidly under the rebound effect of the first spring again, while driving blood sampling Blood taking needle in needle tray launches rapidly one section of written open-ended, the transmitting of realization to blood taking needle.

Preferably, the raised thin slice is symmetrical arranged on the pen core, and the limit guide groove is in the pen container inner wall pair Claim setting.Raised thin slice, which is symmetrical arranged, enables to the transmitting route of blood taking needle more steady, guarantees blood taking needle in emission process In will not shake.

Working principle and beneficial effect: first that one section of nib and two sections of nibs is whole from pen container when using this blood collecting pen On twist off, expose blood sampling needle tray, needle tray of taking a blood sample at this time reaches above the upper end opening of pen container, and blood taking needle is put into blood sampling After in needle tray, one section of nib and two sections of nib entirety are threadedly coupled with pen container, blood taking needle installs；Then two sections of pens are pulled Tail, two sections of tails drive one section of tail to move back, and the inner wall convex shoulder compressing second spring compression of one section of tail, second spring passes through convex Block forces pen core to move back, and limit convex shoulder random notes core moves back, and compresses the first spring, and the elastic emission convex block to pen core is stuck in pen container It when inner wall convex block bottom, stops drag, at this point, blood sampling needle tray random notes core moves down into below the upper end opening of pen container, then presses Elastic emission press piece, salient point squeeze elastic emission convex block, so that elastic emission convex block is detached from the inner wall convex block bottom of pen container, then First recoil of spring limits convex shoulder, and pen core is driven to move up rapidly, while the blood taking needle in blood sampling needle tray being driven to launch one rapidly Duan Bitou's is open-ended, realizes the transmitting to blood taking needle, completes to puncture, after the completion of puncture, the screen resilience of second spring can be right The convex block of pen core has screen resilience, so that the blood taking needle in blood sampling needle tray bounces back into one section of nib, that is, after puncturing, blood sampling The syringe needle of needle is not exposed to one section of written open-ended outer wall, but is retracted into inside it.In the mistake that blood taking needle is launched The raised thin slice of Cheng Zhong, pen core can move linearly rapidly using limit guide groove as guide rail, keep the movement of pen core more stable, no Shaking can be generated, so that the blood taking needle straight line in pen core front end blood sampling needle tray is punctured into human body, can largely subtract in this way The pain gently punctured.The blood taking needle then more renewed in the same manner described above again after battery has fired of blood taking needle, under One-time puncture.

It is convex on pen core due in the overshoot of transmitting blood taking needle as it can be seen that the blood collecting pen in the present invention is in puncture process Playing thin slice can move linearly rapidly using the limit guide groove of pen container inner wall as linear guide, and pen core is avoided to shake when moving And offset, and then the transmission path of blood taking needle in blood sampling needle tray at the top of pen core is avoided to shake and deviate, enables blood taking needle It is enough really to carry out straight line puncture, reduce pain when patient punctures.

Detailed description of the invention

Fig. 1 is the entirety perspective view for reducing the blood collecting pen for puncturing pain；

Fig. 2 is the front view of Fig. 1；

Fig. 3 is the left view of Fig. 2；

Fig. 4 is the whole explosive view for reducing the blood collecting pen for puncturing pain；

Fig. 5 is the cross-sectional view of Fig. 2 (before transmitting)；

Fig. 6 is the cross-sectional view of Fig. 2 (after transmitting)；

Fig. 7 is the cross-sectional view of Fig. 3；

Fig. 8 is the schematic perspective view of pen core；

Fig. 9 is the front view of Fig. 8；

Figure 10 is the left view of Fig. 9；

Figure 11 is the top view of pen container；

Figure 12 is three sections of written front views；

Figure 13 is three sections of written bottom views；

Figure 14 is three sections of written perspective views.

Specific embodiment

The present invention is described in detail with reference to the accompanying drawing.

Embodiment 1:

Present embodiments provide for a kind of blood collecting pens for reducing and puncturing and keenly feeling, and such as Fig. 1 to 11, the blood collecting pen is mainly by elastic emission Press piece 4 and one section of nib, 10, two sections of nibs 2, pen core 7, pen container 8,3, one sections of tails 9 of shell and the two sections of tails coaxially assembled 6 compositions, one section of nib 10 are connect with the top of two sections of nibs 2, and the bottom of two sections of nibs 2 is connect with the screw top of pen container 8, pen Cylinder 8 is set in outside pen core 7, and one section of tail 9 is set in 8 outer wall lower part of pen container, and the top of pen core 7 is located in pen container 8, lower part In one section of tail 9；The outer wall of two sections of tails 6 and one section of tail 9 is arranged buckle；It is arranged in the outer wall of pen core 7 positioned at pen The first spring 11 in cylinder 8, the first spring 11 are located between limit convex shoulder 702 and the bottom wall of pen container 8 of pen core 7；In the first bullet The lower section of spring 11, the outer wall of pen core 7 are also arranged with second spring 12, and second spring 12 is located at the inner wall convex shoulder 901 of one section of tail 9 Between the convex block 701 of 7 bottom of pen core.

The bottom of elastic emission press piece 4 is fixed in a shell 3, and top is exposed to outside a shell 3, is pushed up for that will be located at pen core 7 Blood taking needle in the blood sampling needle tray 703 in portion is emitted to outside the open top end of one section of nib 10；The inner wall of elastic emission press piece 4 With salient point 401, also there is elastic emission convex block 706 on pen core 7, between blood sampling needle tray 703 and limit convex shoulder 702；It is taking a blood sample Before needle is launched, elastic emission convex block 706 is stuck in 802 bottom of inner wall convex block of pen container 8,401 face elastic emission convex block of salient point 706；After pen core 7 is launched, elastic emission convex block 706 is detached from the bottom of inner wall convex block 802 and is moved to its top, salient point 401 are located at 706 lower section of elastic emission convex block.Protrusion is additionally provided on pen core 7, between blood sampling needle tray 703 and limit convex shoulder 702 Thin slice 704 offers limit guide groove 801 engaged therewith at 8 inner wall of pen container position corresponding with raised thin slice 704, protrusion Thin slice 704 is slidably connected with limit guide groove 801.

The working principle that this reduction punctures the blood collecting pen of pain is as follows: when using this blood collecting pen, first by one section of nib 10 It is twisted off from pen container 8 with two sections of 2 entirety of nibs, exposes blood sampling needle tray 703, needle tray 703 of taking a blood sample at this time reaches the upper of pen container 8 Above end opening, after blood taking needle is put into blood sampling needle tray 703, after one section of nib 10 and two sections of nibs 2 are assembled, it is whole with Pen container 8 is threadedly coupled, and blood taking needle installs；Then two sections of tails 6 are pulled, two sections of tails 6 drive one section of tail 9 to move back, and one The inner wall convex shoulder 901 of section tail 9 is oppressed second spring 12 and is compressed, and second spring 12 forces pen core 7 to move back by convex block 701, limits Position convex shoulder 702 is moved back with pen core 7, compresses the first spring 11, and the inner wall that the elastic emission convex block 706 to pen core 7 is stuck in pen container 8 is convex When 802 bottom of block, stop drag, at this point, blood sampling needle tray 703 is moved down into pen core 7 below the upper end opening of pen container 8, the first bullet Spring 11 and second spring 12 are compressed, and elastic emission press piece 4 is then pressed, and salient point 401 squeezes elastic emission convex block 706, makes Elastic emission convex block 706 is detached from 802 bottom of inner wall convex block of pen container 8, and then the first spring 11 rebound limit convex shoulder 702, drives Pen core 7 moves up rapidly, while the blood taking needle in blood sampling needle tray 703 being driven to launch the open-ended of one section of nib 10 rapidly, real Now to the transmitting of blood taking needle, complete to puncture, after the completion of puncture, the screen resilience of second spring 12 can the convex block 701 to pen core 7 have Screen resilience, so that the blood taking needle in blood sampling needle tray 703 bounces back into one section of nib 10, that is, after puncturing, the syringe needle of blood taking needle It is not exposed to the open-ended outer wall of one section of nib 10, but is retracted into inside it.During blood taking needle is launched, pen The raised thin slice 704 of core 7 can be that guide rail moves linearly rapidly with limit guide groove 801, keep the movement of pen core 7 more stable, Shaking will not be generated, the blood taking needle straight line in 7 front end of pen core blood sampling needle tray 703 is enable to puncture into human body, it in this way can very great Cheng Mitigate the pain of puncture on degree.The blood taking needle then more renewed in the same manner described above again after battery has fired of blood taking needle, To puncture next time.

Embodiment 2:

Present embodiment is the further improvement of embodiment 1, is mainly theed improvement is that: in the embodiment 1, blood taking needle Paracentesis depth is not adjustable, and is not applied for the puncture of a variety of situations, and in the present embodiment, it can be effectively to blood taking needle Paracentesis depth, which is adjusted, even to be quantified, specifically:

It further include three sections of nibs 1, the inner wall bottom of third section nib 1 such as Figure 12 to 14 in blood collecting pen in the present embodiment With thread 101, the outer wall of one section of nib 10 has a thread tracks 1001, three sections of nibs 1 be set in one section of 10 outer wall of nib and It is threadedly coupled by thread 101 with thread tracks 1001.Connected between three sections of nibs 1 and two sections of nibs 2 by thread tracks 1001 When connecing precession, the distance of precession is bigger, then the paracentesis depth of blood taking needle is deeper, and the distance of precession is smaller, then paracentesis depth It is more shallow.

In order to further facilitate adjusting paracentesis depth, can also be arranged at the top of the inner wall of three sections of nibs 1 etc. Several vertical convex ribs 102 of spaced circumferential distribution, the outer wall two sides of one section of nib 10, which are symmetrically arranged with, can be stuck in longitudinal direction two-by-two Limit salient point 1002 between convex ribs 102；When thread tracks 1001 precession of three sections of nibs 1 around one section of 10 outer wall of nib, limit Position salient point 1002 can cross each vertical convex rib 102.After designing in this way, during precession, limit salient point 1002 is often got over As soon as crossing a vertical convex rib 102, the distance of precession will increase a unit, the cooperation of vertical convex rib 102 and limit salient point 1002 Being equidistant for each precession is enabled to, it being capable of effective quantified controlling paracentesis depth.

In order to directly reading the depth of puncture, the puncture procedure of medical staff is preferably instructed, it can also be at three sections One week circumference spaced set of bottom outer wall paracentesis depth graduation mark 103 corresponding with each vertical convex rib 102 of nib 1.Limit Salient point 1002 often crosses a vertical convex rib 102, and three sections of nibs 1 will be to one section of 10 precession of nib more further, then blood taking needle Paracentesis depth when transmitting then can be deeper, and paracentesis depth graduation mark 103 corresponding with convex ribs 102 longitudinally in each then can be intuitive Ground shows the depth of puncture, and very convenient medical staff uses.

For the ease of medical staff's reading, the bottom design of three sections of nibs 1 can be located at one section of nib 10 and two sections Between nib 2, the upper edge of two sections of nibs 2 opens up the reading window 201 for showing paracentesis depth graduation mark 103.Three sections of nibs 1 Threadingly one unit of the every rotation of track 1001, the reading window 201 will show a unique reading, which is exactly to adopt The paracentesis depth of blood needle, such design is so that medical staff easily facilitates the depth for reading and puncturing at that time.

In order to limit blood taking needle paracentesis depth the upper limit, or three sections of 1 transition precessions of nib in order to prevent can be with One longitudinal prevention convex ribs 103 is set on three sections of 1 inner walls of nib, between each vertical convex rib 102 and thread 101, in one section of pen The prevention salient point 1003 for being additionally provided on first 10 outer wall and longitudinal direction prevention convex ribs 103 cannot being crossed, when three sections of nibs 1 are around one 1001 precession of thread tracks of 10 outer wall of Duan Bitou after a week, prevents salient point 1003 from preventing convex ribs 103 from effectively connecing with longitudinal just Touching, i.e., it is longitudinal to prevent convex ribs 103 that salient point 1003 be prevented to stop, prevent the further precession of three sections of nibs 1.It is longitudinal to prevent convex ribs 103 and prevent salient point 1003 design so that three sections of nibs 1 at most can only threadingly track 1001 be rotated around one section of nib 10 360°。

In addition to this, present embodiment is identical with embodiment 1, is not repeated herein.

Embodiment 3:

Present embodiment is the further improvement of embodiment 2, is mainly theed improvement is that: in embodiment 2, being tied when puncturing Shu Hou needs to take out blood taking needle out of blood sampling needle tray 703, since the depth of blood sampling needle tray 703 is typically larger than the length of blood taking needle Degree, so, it manually takes out more troublesome.And used adopt can be easily taken out in blood collecting pen in the present embodiment Blood needle.Specifically:

In the present embodiment, if Figure 4 and 5, blood collecting pen further include unloading needle push rod 5, it is parallel with the side wall of pen core 7 to unload needle push rod 5 It is arranged and is located at immediately below the through-hole 705 of blood sampling 703 bottom wall of needle tray, and its top is stuck in through-hole 705, bottom end side is fixed is connected It is connected to and unloads needle handle 501, unload needle handle 501 between two sections of nibs 2 and the outer wall of shell 3.After the completion of blood sampling is primary, by one Duan Bitou 10 and two sections of nibs 2 disassemble, and both can will unload needle push rod 5 by unloading needle handle 501 and above push away, and unload needle push rod 5 and move up When across blood sampling 703 bottom of needle tray through-hole 705 after by take a blood sample needle tray 703 in blood taking needle above push away, when blood taking needle is pushed away by needle is unloaded Bar 5 shift onto expose blood sampling needle tray 703 on along the rear blood taking needle that can easily take out after use, then again by unloading needle Handle 501 will unload needle push rod 5 and be displaced downwardly to 703 lower section of blood sampling needle tray, then be put into new blood taking needle into blood sampling needle tray 703 again, Then one section of nib 10 and two sections of nibs 2 are threadedly coupled with pen container 8 again, waiting is taken a blood sample next time.

In addition to this, present embodiment is identical with embodiment 2, is not repeated herein.

The technical concepts and features of above embodiment only to illustrate the invention, its object is to allow be familiar with technique People cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention The equivalent transformation or modification that Spirit Essence is done, should be covered by the protection scope of the present invention.

Claims

1. it is a kind of reduce puncture pain blood collecting pen, which is characterized in that including coaxially assemble a Duan Bitou (10), two sections of nibs (2), pen core (7), pen container (8), shell (3), one section of tail (9) and two sections of tails (6), further include elastic emission press piece (4)；Institute It states a Duan Bitou (10) to connect with the top of two sections of nibs (2), the bottom and the pen container (8) of two sections of nibs (2) Screw top connection, the pen container (8) is set in that the pen core (7) is external, and one section of tail (9) is set in the pen container (8) outer wall lower part, and the top of the pen core (7) is located in the pen container (8), lower part is located in one section of tail (9)；Institute The outer wall for stating two sections of tails (6) and one section of tail (9) is arranged buckle；

The first spring (11) in the pen container (8) is arranged in the outer wall of the pen core (7) and is located at one section of pen Second spring (12) in tail (9), first spring (11) are located at the limit convex shoulder (702) and the pen of the pen core (7) Between the bottom wall of cylinder (8)；The second spring (12) is located at the inner wall convex shoulder (901) and the pen core of one section of tail (9) (7) between the convex block (701) of bottom；

The bottom of the elastic emission press piece (4) is fixed in described shell (3), and top is exposed to described shell (3) outside, is used for The blood taking needle being located in the blood sampling needle tray (703) at the top of the pen core (7) is emitted at the top of a Duan Bitou (10) and is opened Outside mouth end；

Raised thin slice is additionally provided on the pen core (7), between the blood sampling needle tray (703) and the limit convex shoulder (702) (704), limit engaged therewith is offered at the pen container (8) inner wall position corresponding with raised thin slice (704) to lead Slot (801), the protrusion thin slice (704) are slidably connected with the limit guide groove (801).

2. according to claim 1 reduce the blood collecting pen for puncturing pain, which is characterized in that further include (1) three Duan Bitou, institute The inner wall bottom for stating third section written (1) has thread (101), and the outer wall of a Duan Bitou (10) has thread tracks (1001), three Duan Bitou (1) is set in a Duan Bitou (10) outer wall and by the thread (101) and the screw thread Track (1001) is threadedly coupled.

3. it is according to claim 2 reduce puncture pain blood collecting pen, which is characterized in that three Duan Bitou (1) it is interior There are several vertical convex ribs (102) of equidistant circle distribution, the outer wall two sides of a Duan Bitou (10) are symmetrically set at the top of wall It is equipped with the limit salient point (1002) that can be stuck between the vertical convex rib (102) two-by-two；When three Duan Bitou (1) is around described When thread tracks (1001) precession of one Duan Bitou (10) outer wall, it is convex that the limit salient point (1002) can cross each longitudinal direction Muscle (102).

4. according to claim 2 reduce the blood collecting pen for puncturing pain, which is characterized in that in three Duan Bitou (1) Go back within bottom outer wall one week circumference spaced set paracentesis depth graduation mark (103) corresponding with each vertical convex rib (102).

5. according to claim 4 reduce the blood collecting pen for puncturing pain, which is characterized in that the bottom of three Duan Bitou (1) Between a Duan Bitou (10) and two sections of nibs (2), the upper edge of two sections of nibs (2) is opened up for showing in portion The reading window (201) of the paracentesis depth graduation mark (103).

6. the reduction according to any one of claim 2 to 5 punctures the blood collecting pen of pain, which is characterized in that described three Longitudinal prevention convex ribs are additionally provided on Duan Bitou (1) inner wall, between each vertical convex rib (102) and the thread (101) (103), it is additionally provided on the outer wall of a Duan Bitou (10) and prevents salient point (1003), when three Duan Bitou (1) is around institute State thread tracks (1001) precession of a Duan Bitou (10) outer wall after a week, the prevention salient point (1003) just with the longitudinal direction Convex ribs (103) are prevented effectively to contact.

7. according to any one of claim 1 to 5 reduce the blood collecting pen for puncturing pain, which is characterized in that further include unloading Needle push rod (5), the side wall for unloading needle push rod (5) and the pen core (7) are arranged in parallel and are located at blood sampling needle tray (703) bottom Immediately below the through-hole (705) of wall, and its top is stuck in the through-hole (705), and bottom end side, which is fixedly connected with, unloads needle handle (501), described unload needle handle (501) are between two sections of nibs (2) and the outer wall of described shell (3).

8. according to any one of claim 1 to 5 reduce the blood collecting pen for puncturing pain, which is characterized in that the elasticity The inner wall for emitting press piece (4) has salient point (401), on the pen core (7), the blood sampling needle tray (703) and the limit convex shoulder (702) also there are elastic emission convex block (706) between；Before the blood taking needle is launched, elastic emission convex block (706) card In inner wall convex block (802) bottom of the pen container (8), elastic emission convex block (706) described in salient point (401) face；Institute It states after pen core (7) is launched, the bottom that the elastic emission convex block (706) is detached from the inner wall convex block (802) is simultaneously moved to it Top, the salient point (401) are located at below the elastic emission convex block (706).

9. according to any one of claim 1 to 5 reduce the blood collecting pen for puncturing pain, which is characterized in that the protrusion Thin slice (704) is symmetrical arranged on the pen core (7), and the limit guide groove (801) is symmetrical arranged in the pen container (8) inner wall.