It is a kind of suitable for intravenous infusion needle and the needle head structure of vein blood taking needleTechnical field
The present invention relates to intravenous infusion needles and vein blood taking needle, are suitable for intravenous infusion needle and vein more particularly, to one kindThe needle head structure of blood taking needle.
Background technique
ZL 201210093841.2 discloses a kind of disposable anti-needle thorn vein blood taking needle, including needle shield, veinNeedle tubing, needle handle, small hose, needle stand, Paracentesis needle holder, blood-collecting needle tube, rubber sheath and anti-needle pierce sheath, after needle is pulled out in use, onlyNeedle handle need to be pulled back to anti-needle thorn sheath, i.e., the avoidable needle after with blood surprisingly stabs other people and causes to infect, to enhanceProtection to medical staff.
However, the medical fluid in needle tubing cannot be prevented to continue to flow out when its self-destruction, cause to trickle down on the ground, it is easy to breedBacterium impacts the health of hospital, and there are security risks.
It need to point out, encounter emergency situations in tuck, for example, the blood vessel of children is meticulous, when needing to change an arm, doctorShield personnel can not one hand operate, it usually needs the hose of syringe needle tail end is vised with pliers and (medical fluid is prevented to pass through), and is madeSyringe needle contacts desktop upwards to avoid it, causes germ contamination；It carries out disinfection again to patient again, after the operation such as binding, then pineIt opens pliers and re-operates syringe needle and be infused.
In addition, needle handle in the market, which usually mixes, color masterbatch, the reason is that being used to identify the model of needle point, however, medical fluidNeedle point must be entered by needle handle, the color masterbatch mixed makes needle handle, and there are security risks.
Summary of the invention
It is safe and reliable that the purpose of the present invention is to provide one kind, and practicability is good, can temporarily save syringe needle in midway, make itNot by bacterium infection, liquid leakage is prevented in self-destruction, suitable for intravenous infusion needle and the needle head structure of vein blood taking needle.
To achieve the above object, the present invention provides the following technical scheme that
It is a kind of suitable for intravenous infusion needle and the needle head structure of vein blood taking needle, including plastic flexible pipe and to be mounted on plastics softThe syringe needle of tube end, syringe needle include needle point and needle handle, and self-destruction bracket, self-destruction bracket are fixedly installed in the middle part of the plastic flexible pipeOn form storage syringe needle storage needle cavity；When syringe needle is overturn as basic point using its tail end and is embedded in the storage needle cavity, syringe needle tail endPlastic flexible pipe doubling and the infusion hole for closing plastic flexible pipe；The gear for blocking the syringe needle and it being prevented to exit is provided in storage needle cavityPiece.
The left side of the storage needle cavity is needle point slot, right side is needle handle slot；The baffle is arranged in needle point slot, the needle handleIt is interference fitted with needle handle slot two sidewalls, the front end of needle handle is against on the step surface of needle handle slot；Fin on the needle handle is single-bladeOr double-vane.
The top of the needle handle slot to the left, extend obliquely upward to form temporary tank；The two sides cell wall of temporary tank can hold needle tightlyHandle front.
The lower part of the self-destruction bracket is provided with the interconnecting piece passed through for the plastic flexible pipe, and interconnecting piece is provided with through-hole；The plastic flexible pipe passes through the through-hole and is bonded as one with self-destruction bracket.
The two sides of the self-destruction bracket right end form the guide pin that storage needle cavity is embedded in convenient for syringe needle.
The two sides up and down of the needle handle tail end are provided with inclined-plane, and the syringe needle tail end between upper and lower inclined-plane forms " one " wordShape.
The step surface is inclined surface；Plastic flexible pipe degree of tautness < needle handle front end that needle handle front end is against inclined surface top is supportedPlastic flexible pipe degree of tautness in inclined surface lower part.
The rack gear for preventing needle handle front end from sliding is provided on the step surface.
The needle handle is made of colourless transparent plastic；The mark of mark needle point model is provided on the self-destruction bracket.
Therefore, the present invention can temporarily save syringe needle in midway, make it not by bacterium infection, and can prevent medicine in self-destructionLiquid leakage is suitable for intravenous infusion needle and vein blood taking needle, easy to operate, and security risk is not present.
Needle handle of the invention is made of colourless transparent plastic, without worrying mixing for color masterbatch, improves safety；It is corresponding, it is provided with the mark of mark needle point model on self-destruction bracket, there are enough positions to mark needle point model on self-destruction bracketKnow, had not only avoided influence of the color masterbatch to medical fluid, but also do not influence label.
Detailed description of the invention
Fig. 1 is schematic diagram of the invention.
Schematic diagram when Fig. 2 is self-destruction of the present invention.
Cross-sectional view when Fig. 3 is self-destruction of the present invention.
Fig. 4 is self-destruction support schematic diagram of the invention.
Fig. 5 is self-destruction bracket cross-sectional view of the invention.
Fig. 6 is the cross-sectional view of single-blade needle handle of the invention.
Fig. 7 is the right view of Fig. 6.
Fig. 8 is the tail end schematic diagram of Fig. 6.
Fig. 9 is the schematic diagram of double-vane needle handle of the invention.
Figure 10 is the self-destruction support schematic diagram of another embodiment of the present invention.
Figure 11 is the temporary status diagram of another embodiment of the present invention.
Figure 12 is the self-destruction status diagram of another embodiment of the present invention.
Figure 13 is the schematic diagram when present invention is applied to blood taking needle.
Figure 14 is the schematic diagram when present invention is applied to transfusion needle.
Schematic diagram when Figure 15 is jointing tape of the present invention.
Figure 16 is one of another form of syringe needle schematic diagram of the invention.
Figure 17 is the two of another form of syringe needle schematic diagram of the invention.
Figure 18 is the syringe needle schematic diagram of double-vane arc needle handle of the invention.
In figure: 1- plastic flexible pipe；2- self-destruction bracket；Plastic flexible pipe between 3- syringe needle and self-destruction bracket；4- needle handle；5- needleHead front end；6- needle point；7- syringe needle；8- needle point slot；9- stores up needle cavity；10- baffle；11- guide pin；12- needle handle slot；The hand-held part 13-；14- step surface；15- through-hole；16- needle handle tail end；17- linear type；The inclined-plane 18-；19- double-vane needle handle；20- temporary tank；21- is adoptedBlood needle staight needle handle；22- transfusion needle attachment base；23- adhesive tape.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement belowExample is not intended to limit the scope of the invention for illustrating the present invention.
As shown in figures 1-15, a kind of suitable for intravenous infusion needle and the needle head structure of vein blood taking needle, including plastic flexible pipe 1And it is mounted on the syringe needle 7 of plastic flexible pipe end, syringe needle 7 includes needle point 6 and needle handle 4, and the middle part of the plastic flexible pipe 1 is fixedly mountedThere is self-destruction bracket 2, the storage needle cavity 9 of storage syringe needle is formed on self-destruction bracket 2；Syringe needle 7 is with its tail end (that is, needle handle tail end 16)When basic point overturns and is embedded in the storage needle cavity 9, the plastic flexible pipe of syringe needle tail end is (that is, the plastics between syringe needle and self-destruction bracket are softPipe 3) doubling and close the infusion hole (as shown in figure 3, plastic flexible pipe doubling at needle handle tail end 16) of plastic flexible pipe；It stores up in needle cavityIt is provided with the baffle 10 for blocking the syringe needle and it being prevented to exit, which can effectively prevent needle so that when self-destruction of the present inventionMedical fluid in head and plastic flexible pipe is unrestrained.
The left side of the storage needle cavity is needle point slot 8, right side is needle handle slot 12；The baffle is arranged in needle point slot 12, instituteNeedle handle 4 and 12 two sidewalls of needle handle slot interference fit are stated, to realize the fixation of needle handle；The front end of needle handle is against the step of needle handle slotOn face, to realize tightening for the plastic flexible pipe between syringe needle and self-destruction bracket；Fin on the needle handle is single-blade or double-vane.
The top of the needle handle slot to the left, extend obliquely upward to form temporary tank 20；The two sides cell wall of temporary tank 20 can be embracedTight needle handle front (as shown in figure 11), plastic flexible pipe still doubling at needle handle tail end 16 simultaneously keep infusion hole to close, need to point out, as long as plastic flexible pipe is for infusion hole closing can be realized in doubled state, plastic flexible pipe, which is tightened, only further increases closingEffect.The design saves syringe needle temporarily in midway, makes it not by bacterium infection, and can prevent medical fluid from letting out in self-destructionLeakage.
The lower part of the self-destruction bracket is provided with the interconnecting piece passed through for the plastic flexible pipe, and interconnecting piece is provided with through-hole15；The plastic flexible pipe passes through the through-hole and is bonded as one with self-destruction bracket.In the present embodiment, the downside of interconnecting piece extendsAnd form hand-held part.
The two sides of the self-destruction bracket right end form the guide pin 11 that storage needle cavity is embedded in convenient for syringe needle.It can prevent from curingShield personnel not very make syringe needle be not aligned with storage needle cavity 9 caused by deflect away from.
The two sides up and down of the needle handle tail end are provided with inclined-plane 18, and the syringe needle tail end between upper and lower inclined-plane forms " one "Font 17, structure are similar with the word spiral shell tool structure of end, it is ensured that more docile when plastic flexible pipe doubling, sealing effect is moreIt is good.
The step surface 17 is inclined surface；Needle handle front end is against the plastic flexible pipe degree of tautness < needle handle front end on inclined surface topIt is against the plastic flexible pipe degree of tautness of inclined surface lower part.Syringe needle insertion storage needle cavity is deeper, then the closing effect at the fold of plastic flexible pipeFruit is better, more not easy-to-leak liquid.
It is provided with the rack gear (not shown) for preventing needle handle front end from sliding on the step surface, syringe needle can be prevented in plasticsSealing effect caused by moving up automatically under the effect of hose elastic force reduces.
The needle handle is made of colourless transparent plastic；The mark of mark needle point model is provided on the self-destruction bracket,Without worrying mixing for color masterbatch, safety is improved；It is corresponding, there are enough positions to mark needle point model on self-destruction bracketKnow, had not only avoided influence of the color masterbatch to medical fluid, but also do not influence label.
After infusion adhesive tape both ends removing still stick on needle handle, can self-destruction, adhesive tape do not have to and needle handle removing reduce suffererPull out needle pain.
It need to point out, often have medical staff to reflect following situation: when in use, hand-held needle handle is pierced into existing syringe needleHuman body, needle point, which can generate, to be rocked, this is because at 90 degree of right-angle structures between needle handle 4 and needle main body, exert a force to handle 4 so thatNeedle point is pierced into human body, and the power of handle cannot be transferred to needle point main body well；
For this situation, such as Figure 16, shown in 17, the present invention has also deducted a percentage a kind of novel needle handle structure, that is, on syringe needleForm the needle handle 41 of arc, interconnecting piece (that is, position that needle handle and needle main body combine) company of 41 hand-held part of needle handle and needle handleWhen being in line, the included angle A of the straight line (straight line is named as needle handle line herein) and needle point center line is that (acute angle is usual for acute angleValue is carried out between 30 degree to 70 degree, the included angle A in figure is 60 degree), arcuate structure is for aesthetics design, and core existsIn by adjusting the angle of needle handle line and needle point center line, so that the power that needle main body is subject to is more close to needle point center line.
As shown in figure 18, the present invention has also deducted a percentage the syringe needle of the arc needle handle structure of another double-vane, that is, the left and right of syringe needleTwo sides are separately formed the needle handle 42,43 of arc.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the artFor member, without departing from the technical principles of the invention, several improvements and modifications, these improvements and modifications can also be madeAlso it should be regarded as protection scope of the present invention.