CN104189974B - A kind of safety puncture needle - Google Patents

A kind of safety puncture needle Download PDF

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Publication number
CN104189974B
CN104189974B CN201410415694.5A CN201410415694A CN104189974B CN 104189974 B CN104189974 B CN 104189974B CN 201410415694 A CN201410415694 A CN 201410415694A CN 104189974 B CN104189974 B CN 104189974B
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core
urceolus
needle
projection
gathering sill
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CN104189974A (en
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王幸明
大神田高贵
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SHANGHAI JINZE XIABEN MEDICAL INSTRUMENT Co Ltd
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SHANGHAI JINZE XIABEN MEDICAL INSTRUMENT Co Ltd
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Abstract

The invention discloses a kind of safety puncture needle, including: needle stand, needle body, inner core, urceolus and elastic component.The safety puncture needle of the present invention is before being introduced into safe condition, needle body stretches out from one end of urceolus, after completing to puncture, rotating inner core makes needle stand enter inner core, inner core and needle stand slide into the action of the other end from one end of urceolus, so that needle point enters urceolus, it is achieved preventing the purpose that used puncture needle is hurted sb.'s feelings, it is simple and convenient.If the most specially applying sufficiently large power, needle stand and inner core will not return in situ, therefore, its safety is more reliable.The shortcoming that the present invention overcomes the complete easy scathing of puncture needle of existing use, it is provided that a kind of safety puncture needle preventing from using complete puncture needle scathing.

Description

A kind of safety puncture needle
Technical field
The present invention relates to medical transfusion device.It is specially a kind of safety puncture needle.
Background technology
At present, human transfusion, as the important and effective medical procedure of one for the treatment of disease, is widely used.Human body Pain can be brought to patient when the pin that metal is made is penetrated during transfusion the blood vessel of human body.If disease needs repeatedly to infuse, then need Repeatedly to puncture.Remaining needle can solve problem above, and remaining needle generally comprises piercing assembly and infusion set, after completing to puncture, Piercing assembly departs from human body.A part for the soft transfusion needle of infusion set is retained in human vas, carries out defeated in next time During liquid, transfusion needle can be connected and tube for transfusion is infused, be not required to puncture again.
Puncture needle is disposable medical article, and in order to prevent disease from passing through blood born, puncture needle i.e. goes out of use after using And process.Current process is, puncture needle is after human body departs from, and on pinhead sleeve, the protective cover of plastics prevents from stabbing medical worker With treatment of!medical waste personnel, but protective cover is simply enclosed within puncture needle simply, it is easy to comes off, is still easy to stab doctor Business personnel and waste disposal workers and cause the infection of disease.
Summary of the invention
The shortcoming that present invention solves the technical problem that the easy scathing of puncture needle being to overcome existing use complete, it is provided that a kind of Can prevent from using the safety puncture needle of complete puncture needle scathing.
The safety puncture needle of the present invention, including:
Needle body, has the needle point for puncturing skin and blood vessel wall;
Needle stand, the outer wall of described needle stand is provided with needle stand projection, and described needle body is fixed on one end of described needle stand, and described needle stand also has There is the needle stand step of needle point towards described needle body;
Inner core, described inner core is provided with inner core the first barrier structure and inner core the second barrier structure, and the outer wall of described inner core has inner core Projection, before entering safe condition, described needle stand stretches in described inner core away from one end of described needle point, and described needle stand projection Offseting with described inner core the first barrier structure prevents described needle stand from moving in described inner core;
Urceolus, described urceolus has urceolus the first barrier structure and urceolus the second barrier structure, and one end of the inwall of described urceolus is also Having urceolus step, before entering safe condition, described inner core and needle stand are respectively positioned in described urceolus, and described needle body is from described Cylinder is provided with one end of urceolus step and stretches out, described inner core projection and described urceolus the first barrier structure offset to prevent described inner core to Slide in one end away from described needle point of urceolus;
Elastic component, described elastic component is enclosed within described needle stand, and between described needle stand step and described urceolus step, is entering Before entering safe condition, described elastic component is compressed with described urceolus step by described needle stand step;
During entering safe condition, rotate inner core and make it make described needle stand projection with described relative to the rotation of described needle stand Inner core the first barrier structure staggers and makes inner core projection stagger with described urceolus the first barrier structure simultaneously, and described elastic component is along institute The length direction stating inner core stretches to provide thrust, and described needle stand slips under the promotion of described elastic component in described inner core until institute State needle stand projection to offset with described inner core the second barrier structure, described inner core together with described needle stand under the promotion of described thrust to Urceolus skids off stopping slip, now institute until described inner core projection and described urceolus the second barrier structure offset away from one end of needle point The needle point stating needle body enters in described urceolus, i.e. enters safe condition.
As preferably, the inwall of described inner core is provided with the inner core gathering sill of the length direction extension along inner core, described inner core gathering sill Extending to described inner core and be provided with inner core gathering sill entrance near one end of described needle point and at this end, described needle stand projection can pass through institute Stating inner core gathering sill entrance and enter described inner core gathering sill the bearing of trend slip along described inner core gathering sill, this end of inner core does not sets The end wall putting described inner core gathering sill porch forms described inner core the first barrier structure.
As preferably, the inwall of described urceolus has the urceolus gathering sill of the length direction extension along urceolus, described urceolus gathering sill Having urceolus gathering sill opening, described inner core projection can enter described urceolus gathering sill and along institute by described urceolus gathering sill opening The bearing of trend stating urceolus gathering sill slides.
As preferably, before entering safe condition, an end of described inner core stretches out use from described urceolus away from one end of needle point Hand-held to rotate described inner core in operator.
As preferably, one end of the close described needle point of described inner core is additionally provided with cooperation breach, and described cooperation breach extends to described The termination of this end of inner core, and it is provided with the outlet along described inner core length direction at this end;Described urceolus also has along described urceolus Circumferentially extending open-work, described urceolus gathering sill is communicated with described open-work by urceolus gathering sill opening;Described safety puncture needle Also including the rotation ring being enclosed within outside described urceolus, described rotation ring inwall is provided with stirs pawl, described in stir pawl through described urceolus In stretching into described cooperation breach after open-work and coordinate with the described sidewall coordinating breach;Rotate the rotation the most rotatable described inner core of ring, when Described inner cylinder rotating to described inner core projection enters described urceolus gathering sill and along described urceolus gathering sill to away from needle point one extreme direction During slip, described in stir pawl and coordinate breach to depart from by the outlet of described cooperation breach with described.
As preferably, the cooperation breach of described inner core is adjacent with described inner core projection.
As preferably, the cooperation breach of described inner core is opened in described inner core projection.
As preferably, the two ends of described inner core projection are being perpendicular to the axis of described inner core with described two ends coordinating breach respectively On direction concordant.
As preferably, described urceolus offers anchor window away from one end of described needle point, and described anchor window is positioned at described urceolus The termination of gathering sill, in the secure state, described inner core projection enters described anchor window, a sidewall of described anchor window Constitute one end of described urceolus the second barrier structure and described inner core projection and offset that to stop that described inner core continues to urceolus outside sliding Dynamic.
As preferably, in described anchor window, be additionally provided with stop arm, described stop arm from the end of described urceolus gathering sill along described The bearing of trend of urceolus gathering sill extends, and the end of described stop arm is to the inner inclination of described urceolus, in the secure state, and institute State inner core projection to be stuck between described second barrier structure and the end of stop arm and can not move relative to described urceolus.
As preferably, described inner core the second barrier structure is inner core step.
As preferably, in the secure state, described elastic component is still in the state compressed.
As preferably, described needle stand outer wall is provided with two described needle stand projections being oppositely arranged, and the inwall of described inner core is provided with two The individual described inner core gathering sill being oppositely arranged, two described needle stand projections can enter in two described inner core gathering sills by one_to_one corresponding; Described inner core is provided with two described inner core projections being oppositely arranged, and described urceolus is provided with two described urceolus gathering sills being oppositely arranged, Two described inner core projections can enter in two described urceolus gathering sills by one_to_one corresponding.
As preferably, the outer wall of described inner core is provided with two described cooperation breach being oppositely arranged, and described urceolus is provided with two relatively The described open-work arranged, the inwall of described rotation ring be provided with two be oppositely arranged described in stir pawl, stir pawl described in two one a pair Corresponding described cooperation breach should be stirred in ground in two described open-works.
As preferably, described urceolus is provided with two and is respectively used to inner core two anchor windows that inner core projection positions.
As preferably, described urceolus includes cylinder and the cylinder cap being connected with described cylinder one end, described open-work, urceolus gathering sill and Anchor window is each provided on described cylinder, and described urceolus step is located at one end of described cylinder cap, and one end of described needle stand and needle body Stretching out from this end of described cylinder cap, the outer wall of one end that described cylinder is connected with described cylinder cap is provided with two connections being oppositely arranged and dashes forward Rising, one end that described cylinder cap is connected with described cylinder has two connection draw-in grooves being oppositely arranged, and two described connection projections are one by one Corresponding insertion two connects in draw-in groove.
As preferably, the inwall of described cylinder cap has the cylinder cap locating slot extended along described cylinder cap length direction, is being introduced into safety Before state, described needle stand projection is positioned at described cylinder cap locating slot and along institute under the restriction of the sidewall of described cylinder cap locating slot State and keep geo-stationary with described cylinder cap in the circumferential direction of a cap, when described inner cylinder rotating to its inner core gathering sill and described cylinder cap During locating slot alignment, described needle stand projection enters described inner core gathering sill under the effect of described thrust.
As preferably, described needle body has the endoporus extending to its end from its needle point, and described needle stand sets away from described needle point one end There is the exhaust joint that the endoporus with described needle body communicates.
The present invention compares with safety puncture needle prior art, has the advantages that
1, the operation that the safety puncture needle of the present invention only needs a rotation to stir pawl can complete needle stand enter inner core, inner core and Needle stand slides into the action of the other end from one end of urceolus, so that needle point enters urceolus, it is achieved prevent used puncture needle from hurting sb.'s feelings Purpose, it is simple and convenient.Owing to reverse thrust can be produced when elastic component is compressed, if the most specially applied enough Big power, needle stand and inner core will not return in situ, and its safety is more reliable.
2, the gathering sill that inner core and/or urceolus are arranged can make the motion of needle stand more stable, so that whole safety punctures The action of pin is more stable reliably.
3, the setting coordinating breach, the open-work of urceolus and rotation ring of the inner core of the safety puncture needle of the present invention makes medical worker both The operation that can carry out rotating inner core after medical worker extracts puncture needle makes it into safe condition, also also can stay at puncture needle Operate during Ink vessel transfusing, can carry out pulling out pin operation.Use the safety puncture needle of the present invention, it is only necessary to after completing to puncture, Rotate rotation ring, utilize elastic component stretch the thrust produced make to pull out the action of pin faster, more stable, thus reduce the misery of patient And the damage that the needle point of puncture needle is to blood vessel.And entering safe condition while pulling out pin, this makes the operation of medical worker more Simple and fast.During it addition, medical worker completes to puncture, its finger is just being pinched at rotation ring, and now, the finger of medical worker is not required to Want change place, directly rotate rotation ring and can realize pulling out pin and entering the operation of safe condition, the puncture that hands change place causes can be prevented Pin rocks.
4, urceolus offers anchor window away from one end of needle point, is additionally provided with stop arm in anchor window, and stop arm guides from urceolus The end of groove extends along the bearing of trend of urceolus gathering sill, and the end of stop arm is to the inner inclination of urceolus, in the secure state, Inner core projection be stuck between the sidewall of anchor window and the end of stop arm can not on the axis direction be parallel to urceolus relative to Urceolus moves.So, except safety puncture needle is applied destructive strength, the structure under safe condition will not be changed, make The safe condition obtaining puncture needle is more reliable.
5, needle stand outer wall is provided with two needle stand projections being oppositely arranged, and the inwall of inner core is provided with two inner cores being oppositely arranged and guides Groove, in the secure state, two needle stand projection one_to_one corresponding enter in two inner core gathering sills, and inner core is provided with two and is oppositely arranged Inner core projection, urceolus is provided with two urceolus gathering sills being oppositely arranged, in the secure state, two inner core projection one_to_one corresponding Enter in two urceolus gathering sills.Above-mentioned setting can make in entering security process, and the stress of each parts more balances, needle stand Motion with inner core is more stable, so that the action of whole safety puncture needle is more reliable.
6, urceolus includes cylinder and the cylinder cap being connected with cylinder near the end of needle point one, cylinder with cylinder cap by being connected projection and being connected Draw-in groove connects.So, when assembling the present invention, first needle stand can be assembled together with inner core, then inner core is assemblied in urceolus In cylinder, make a part for needle stand and needle body stretch out from one end of cylinder cap, finally connect cylinder and the cylinder cap of urceolus, make the present invention The assembling of safety puncture needle more convenient.
Accompanying drawing explanation
Fig. 1 is that the safety puncture needle of one embodiment of the invention is entering the schematic appearance before safe condition.
Fig. 2 is the safety puncture needle schematic appearance in the secure state of one embodiment of the invention.
Fig. 3 is needle stand and the structural representation of needle body of the safety puncture needle of one embodiment of the invention.
Fig. 4 is the structural representation of the inner core of the safety puncture needle of one embodiment of the invention.
Fig. 5 is the inner core fiting relation figure with needle stand of the safety puncture needle of one embodiment of the invention.
Fig. 6 is the structural representation of the cylinder of the urceolus of the safety puncture needle of one embodiment of the invention.
Fig. 7 is cylinder cap and the cylinder of the urceolus of the safety puncture needle of one embodiment of the invention, rotation ring and shows coordinating of elastic component It is intended to.
Fig. 8 is the structural representation of the rotation ring of the safety puncture needle of one embodiment of the invention.
Fig. 9 is that the safety puncture needle of one embodiment of the invention is entering the structural representation before safe condition, in detail in this figure Eliminate rotation ring and the cylinder cap of urceolus.
Figure 10 is the safety puncture needle of one embodiment of the invention pin soft with indwelling and outer protection before entering safe condition The structural representation of set.
Figure 11 is the safety puncture needle structural representation in the secure state of one embodiment of the invention.
Reference
1-needle stand, 11-stylolitic part, 12-barrel, 13-needle stand projection, 14-needle stand step, 15-exhaust joint;
2-needle body, 21-needle point, 22-end;
3-inner core, 31-inner core gathering sill, 33-inner core the first barrier structure, 34-inner core the second barrier structure, 35-inner core projection, 36-coordinates breach, and 37-exports;
4-urceolus, 41-cylinder, 411-urceolus gathering sill, 412-opening, 413-open-work, 414-anchor window, 415-stop arm, 416-urceolus the second barrier structure, 417-connects projection, 42-cylinder cap, and 421-connects draw-in groove, 422-cylinder cap locating slot, 423- Urceolus step;
5-elastic component;
6-revolves ring, and 61-stirs pawl;
The soft pin of 7-indwelling;
8-protects set.
Detailed description of the invention
As shown in Fig. 1,2,10,11, the safety puncture needle of the present invention, including: needle stand 1, needle body 2, inner core 3, outer Cylinder 4 and elastic component 5.Constitute remaining needle together with the safety puncture needle pin soft with indwelling 7 of the present invention, puncture using safety Before pin, on the needle body 2 of the safety puncture needle that the soft pin of indwelling 7 is enclosed within the present invention, typically also can overlap protected outside the soft pin of indwelling 7 Set 8, as shown in Figure 10.
As it is shown on figure 3, the outer wall of described needle stand 1 is provided with needle stand projection 13, in the present embodiment, needle stand 1 includes stylolitic part 11 and barrel 12, one end of stylolitic part 11 is fixed together with one end of barrel 12, barrel 12 Rear end connect have exhaust joint 15.Needle stand projection 13 is located at barrel 12 near termination.The stylolitic part of described needle stand 1 11 are fixed with needle body 2, and the outer wall of needle stand 1 also has the needle stand step 14 of the needle point towards needle body, in order to the side to needle point 21 To extruding elastic component 5, described below about elastic component 5.Preferably, needle stand step 14 is by stylolitic part 11 and cylinder The end face of shape part 12 connected position is formed.
As it is shown on figure 3, described needle body 2 is fixed on one end of described needle stand 1, i.e. it is fixed on the stylolitic part 11 of needle stand 1.? In the present embodiment, needle body 2 is hollow, and needle body has needle point and end, and needle point is used for puncturing skin and blood vessel.Needle body also has There is the endoporus extended from its needle point to its end 22.Needle body 2 is along the axis of stylolitic part 11 through whole stylolitic part 11, pin Point 21 stretches out needle stand 1, and the end 22 of needle body 2 stretches into the inside of barrel 12, and the endoporus of needle body 2 is connect with aerofluxus 15 communicate.
As shown in Figure 4 and Figure 5, described inner core 3 is provided with inner core the first barrier structure 33 and inner core the second barrier structure 34, institute The outer wall stating inner core 3 has inner core projection 35, and before entering safe condition, described needle stand 1 only has away from described needle point 21 One end is stretched in described inner core 3, and described needle stand projection 13 offsets with described inner core the first barrier structure 33 and prevents described needle stand 1 moves in described inner core 3;
As shown in Figure 6, described urceolus 4 has urceolus the first barrier structure and urceolus the second barrier structure 416, described urceolus One end of inwall also has urceolus step 423 (as shown in Figure 7), and before entering safe condition, described inner core 3 and needle stand 1 are equal Being positioned at described urceolus, one end that the needle point 21 of described needle body is provided with urceolus step 423 from described urceolus 3 is stretched out, described inner core Projection 35 and described urceolus the first barrier structure offset to prevent described inner core 3 one end away from described needle point 21 to urceolus 4 Slide.
As shown in figures 7 and 9, described elastic component 5 is enclosed within described needle stand 1, and be positioned at described needle stand step 14 with described outside Between cylinder step 423, before entering safe condition, described elastic component 5 is by described needle stand step 14 and described urceolus step 423 Compression, as shown in Figure 10.As preferably, in the secure state, described elastic component 5 is still by needle stand step 14 and urceolus step 423 compressions.In this application, elastic component 5 is helical spring, and certainly, as an alternative, the spring of other forms may be used without.
During entering safe condition, rotate inner core 3 and make it make described pin relative to described needle stand 1 and urceolus 4 rotation Seat projection 13 and described inner core the first barrier structure 33 stagger and make inner core projection 13 and described urceolus the first barrier structure simultaneously Staggering, described elastic component 5 stretches along the length direction of described inner core 3 to provide described thrust, and described needle stand 1 is in described elasticity Slip into until described needle stand projection 13 offsets with described inner core the second barrier structure 34 in described inner core 3 under the promotion of part 5, institute State inner core 3 and skid off away from one end of needle point to urceolus 4 until described inner core together with described needle stand 1 under the promotion of described thrust Projection 35 and described urceolus the second barrier structure 416 offset and stop sliding, and the needle point 21 of the most described needle body enters described urceolus In 4, i.e. enter safe condition.Wherein, rotating inner core and can use various scheme, its preferred version and replacement scheme will later It is discussed in detail.
The safety puncture needle of the present invention only needs an operation rotating inner core can complete needle stand 1 and enter inner core 3, inner core 3 With the action that needle stand 1 slides into the other end from one end of urceolus 4 so that needle point 21 enters urceolus 4, it is achieved prevent used wearing The purpose that pricker is hurted sb.'s feelings, it is simple and convenient.In the secure state, if the most specially applying the sufficiently large elastic component that overcomes and becoming The power that shape produces, needle stand and inner core 3 will not return in situ, and therefore, its safety is more reliable.
As preferably, as shown in Figure 4, the inwall of described inner core 3 is provided with the inner core gathering sill of the length direction extension along inner core 3 31, described inner core gathering sill 31 is provided with inner core gathering sill entrance at it near one end of needle point 21.Described needle stand projection 13 can be led to Cross described inner core gathering sill entrance and enter described inner core gathering sill 31 the bearing of trend slip along described inner core gathering sill 31, interior Cylinder end wall is not provided with described inner core gathering sill porch and forms described inner core the first barrier structure 33.Before entering safe condition, institute The needle stand projection 13 stating needle stand 1 staggers with inner core gathering sill entrance.In the present embodiment, described inner core the second barrier structure 34 For being located at inner core 3 away from the inner core step on one end inwall of described needle point 21.
Inner core 3 is made to rotate relative to needle stand 1, during described inner core 3 rotates, needle stand projection 13 and described inner core first Barrier structure 33 staggers and passes through the entrance described inner core gathering sill 31 of entrance of described inner core gathering sill 31, described needle stand projection 13 Under the effect of the thrust along described inner core 3 length direction along described inner core gathering sill 31 slide make described needle stand 1 enter described in Cylinder 3 also moves away from one end of described needle point 21 to described inner core 3.
In the present embodiment, described inner core gathering sill 31 extends to the end of inner core 3, and is provided with along inner core gathering sill in end The 31 described inner core gathering sill entrances extended, inner core 3 is relatively thin at the wall ratio of the part arranging inner core gathering sill entrance, is being not provided with The wall of inner core gathering sill porch is thicker, as it is shown in figure 5, this thicker part constitutes described inner core the first barrier structure 33, Or increase is not provided with the thickness of position, porch makes it constitute inner core the first barrier structure.As above-mentioned inner core the first barrier structure The replacement scheme (not shown) of 33, it is possible to offer the circumferentially extending stopper slot along described inwall on the inwall of inner core, Described needle stand projection reaches in described stopper slot, and can only slide along the circumferentially opposed of inwall in described inwall in described stopper slot, Now stopper slot limits sidewall composition inner core the first barrier structure that needle stand moves, described inner core gathering sill 31 along inner core length direction Offer the entrance communicated with described stopper slot.
The setting of inner core gathering sill 31 make needle stand during slipping into described inner core, linearly stable motion so that needle body exists Will not produce the when of extracting and rock.
As shown in Figure 6, as preferably, the inwall of described urceolus 4 has the urceolus gathering sill of the length direction extension along urceolus 4 411, described urceolus gathering sill 411 has urceolus gathering sill opening 412.Described inner core projection 35 can be guided by described urceolus Channel opening 412 enters described urceolus gathering sill 411 and the bearing of trend along described urceolus gathering sill 411 slides.
As preferably, such as Fig. 5, described inner core 3 is additionally provided with cooperation breach 36, described cooperation breach near one end of described needle point 36 terminations extending to described this end of inner core 3, and it is provided with the outlet 37 along described inner core length direction at this end.Such as Fig. 6, institute Stating urceolus 4 and also have the circumferentially extending open-work 413 along described urceolus 4, described urceolus gathering sill 411 is by urceolus gathering sill Opening 412 communicates with described open-work 413, and before entering safe condition, described inner core projection 35 stretches in described open-work 413, The sidewall of described open-work 413 forms described urceolus the first barrier structure, stops inner core 3 sliding in urceolus under spring force Dynamic.
Described safety puncture needle also includes being enclosed within the rotation ring 6 outside described urceolus 4, the inwall of described rotation ring is arranged and stirs pawl 61, described in stir pawl 61 and stretch in described cooperation breach 36, such as Fig. 7, Fig. 8, figure after the open-work 413 of described urceolus 4 Shown in 9 and Figure 10.When rotating inner core, enter urceolus described in described urceolus gathering sill 411 tailing edge in described inner core projection 35 and lead To groove 411 in time sliding away from needle point 21 1 extreme direction, described in stir pawl 61 and skid off from the outlet 37 of described cooperation breach 36 Breach 36 is coordinated to depart from described.Certainly, being that inner core 3 moves, rotation ring 6 is motionless, is to stir pawl 61 and 36 phases that coordinate breach To motion.
In the present embodiment, coordinate breach 36 to be preferably located at the mating groove on inner core outside, as an alternative, coordinate breach 36 can also is that open-work.Preferably it is carved with arrow on rotation ring 6, during to illustrate and to operate, turns the direction of gyratory 6.
Medical worker is when pulling out pin action at present, and hands has shake unavoidably, and the speed pulling out pin is the most slow, and this increases blood vessel Damage and the misery of patient.The cooperation breach 36 of the inner core of the safety puncture needle of the present invention, the open-work 413 of urceolus and rotation ring 6 Setting make medical worker both can carry out after medical worker extracts puncture needle rotate inner core operation make it into safe shape State, also can operate when Ink vessel transfusing also stayed by puncture needle, can carry out pulling out pin operation.The safety using the present invention punctures Pin, it is only necessary to after completing to puncture, rotates rotation ring 6, utilize the thrust of elastic component 5 make to pull out the action of pin faster, more stable, Thus reduce the misery of patient and the damage to blood vessel of the needle point of puncture needle.And entering safe condition while pulling out pin, this makes Obtain the operation more simple and fast of medical worker.
Owing to needing a hands to pin the part of the soft pin of indwelling 7 when medical worker pulls out pin, soft pin is prevented to be carried over, therefore the most another One hand-lifting pin, rocks if another hands change place can cause puncture needle to produce, increases the misery of patient.The solution of the present invention A more noticeable advantage is, when medical worker completes to puncture, its finger is just being pinched at rotation ring, now, and medical worker's Finger need not change place, directly rotates rotation ring 6 and can realize pulling out pin and entering the operation of safe condition, as shown in figure 11.
The replacement scheme of above-mentioned rotation inner core is, before entering safe condition, an end of described inner core 3 is remote from described urceolus Stretch out for operator hand-held to rotate described inner core from one end of needle point.This set is for such scheme, and structure is more Simply, but operation is then convenient not as such scheme.
As preferably, as it is shown in figure 5, the cooperation breach 36 of described inner core 3 is opened in described inner core projection 35, by one Inner core projection 35 is divided into two parts, in the present embodiment, coordinates breach 36 to be opened in the middle part of described inner core projection 35.Make For replacement scheme, the cooperation breach 36 of described inner core is adjacent with described inner core projection 35, specifically, inner core projection 35 is near institute The bottom stating the sidewall coordinating breach is connected near the upper end of the sidewall of described cooperation breach with coordinating breach.
In the present embodiment, as shown in Figure 4, the two ends of described inner core projection 35 exist with the described two ends coordinating breach 36 respectively Be perpendicular on the direction of described inner core 3 axis concordant, i.e. inner core projection 35 two ends in its longitudinal direction respectively with coordinate breach The correspondence alignment respectively of 36 two ends in its longitudinal direction.
As preferably, as shown in Figure 6, described urceolus 4 offers anchor window 414 away from one end of described needle point 21, described Anchor window 414 is positioned at the termination of described urceolus gathering sill 411.In the secure state, described inner core projection 35 guides from urceolus Groove 411 enters described anchor window 414.One sidewall of described anchor window 414 offsets with one end of described inner core projection 35 Stopping that inner core 3 continues the slide outside to urceolus 4, this sidewall of anchor window 414 constitutes described urceolus the second barrier structure 416.
As preferably, being additionally provided with stop arm 415 in described anchor window 414, described stop arm 415 is from described urceolus gathering sill The end of 411 extends along the bearing of trend of described urceolus gathering sill 411, and the end of described stop arm 415 is to described urceolus 4 Inner inclination, in the secure state, described inner core projection 35 is stuck in described urceolus the second barrier structure 416 and stop arm 415 End between immovable.So, only safety puncture needle is applied destructive strength, just can change safe condition.
As preferably, described needle stand 1 outer wall is provided with two needle stand projections 13 being oppositely arranged, and the inwall of described inner core 3 is provided with The inner core gathering sill 31 that two are oppositely arranged, in the secure state, two needle stand projection 13 one_to_one corresponding enter two inner cores and lead In groove 31.Described inner core 3 is provided with two inner core projections 35 being oppositely arranged, and described urceolus 4 is provided with two and is oppositely arranged Urceolus gathering sill 411 and two open-works being oppositely arranged 413, during entering safe condition, two described inner core projections 35 one_to_one corresponding enter in two urceolus gathering sills 411.Above-mentioned setting can make the motion of needle stand and inner core more stable, so that The action obtaining whole safety puncture needle is more stable reliably.
As preferably, the outer wall of described inner core 3 is provided with two cooperation breach 36 being oppositely arranged, as shown in Figure 4.Described urceolus 4 are provided with two open-works being oppositely arranged 413, as shown in Figure 6.The inwall of described rotation ring 6 be provided with two be oppositely arranged stir pawl 61, as shown in Figure 8.Stir pawl 61 for two to enter correspondingly in two open-works 413 and stir corresponding cooperation breach 36, As shown in Figure 9 and Figure 10.This arrange can make inner core during rotating, stress evenly so that the fortune of individual parts Dynamic more stable, safety is higher.Certainly, inner core only arranges one and coordinates breach 36, and urceolus 4 only arranges an open-work 413 also The operation of the present invention can be completed.
In the present embodiment, described urceolus 4 be provided with two be respectively used to two inner core projections 35 of inner core 3 are positioned determine Position window 414.
As preferably, communicate as it is shown on figure 3, described needle stand 1 does not sets the end that one end of described needle body 2 is provided with described needle body Exhaust joint 15, in the present embodiment, the end of the end of needle stand, i.e. barrel is provided with V-shaped groove (not shown), Exhaust joint 15 is connected with the end of needle stand by V-shaped groove, and anti-Hemostatic Oral Liquid flows out..
As preferably, as shown in Figure 6 and Figure 7, described urceolus 4 includes cylinder 41 and with described cylinder 41 near described needle point The cylinder cap 42 that one end of 21 connects, described open-work 413, urceolus gathering sill 411 and anchor window 414 are each provided at described cylinder 41 On.As it is shown in fig. 7, the diameter of described cylinder cap 42 reduces to the other end from its one end being connected with described cylinder 41, described pin One end and the needle body of seat 1 stretch out from one end of described cylinder cap 42 minor diameter, and it is little that described urceolus step 423 is also disposed at a cap 42 One end of diameter, as shown in Figure 7.And the outer wall of described cylinder 41 is provided with two and relative sets with one end that described cylinder cap 42 connects The connection projection 417 put, one end that described cylinder cap 42 is connected with described cylinder 41, there are two connection draw-in grooves being oppositely arranged 421, two described connection projections 417 are inserted two one to one and are connected in draw-in groove 421, it is achieved cylinder 41 and cylinder cap 42 Connect.So, when assembling the present invention, first needle stand can be assembled together with inner core, then inner core is assemblied in the cylinder of urceolus In, make a part for needle stand and needle body stretch out from one end of cylinder cap, finally connect cylinder and the cylinder cap of urceolus, make the peace of the present invention The assembling of holotype puncture needle is more convenient.
As preferably, the inwall of described cylinder cap 42 has the cylinder cap locating slot 422 extended along described cylinder cap 42 length direction, Before being introduced into safe condition, described needle stand projection 13 is positioned at described cylinder cap locating slot 422 and at described cylinder cap locating slot 422 Sidewall restriction under in the circumferential direction along described cylinder cap 42, keep geo-stationary with described cylinder cap 42, when described inner core 3 When rotation to its inner core gathering sill 31 aligns with described cylinder cap locating slot 422, described needle stand projection 13 is in the effect of described thrust Lower entrance described inner core gathering sill 31.Cylinder cap locating slot 422 can make needle stand projection 13 can not rotate in cylinder cap 42, thus Improve the stability of whole safety puncture needle.
Above example is only the exemplary embodiment of the present invention, is not used in the restriction present invention, and protection scope of the present invention is by right Claim limits.Those skilled in the art in the essence and protection domain of the present invention, various amendments that the present invention is made or etc. Also it is within the scope of the present invention with replacement.

Claims (18)

1. a safety puncture needle, it is characterised in that including:
Needle body, has the needle point for puncturing skin and blood vessel wall;
Needle stand, the outer wall of described needle stand is provided with needle stand projection, and described needle body is fixed on one end of described needle stand, described pin Seat also has the needle stand step of the needle point towards described needle body;
Inner core, described inner core is provided with inner core the first barrier structure and inner core the second barrier structure, the outer wall tool of described inner core Having inner core projection, before entering safe condition, described needle stand stretches in described inner core away from one end of described needle point, and Described needle stand projection offsets with described inner core the first barrier structure and prevents described needle stand from moving in described inner core;
Urceolus, described urceolus has urceolus the first barrier structure and urceolus the second barrier structure, the inwall of described urceolus One end also has urceolus step, and before entering safe condition, described inner core and needle stand are respectively positioned in described urceolus, described One end that needle body is provided with urceolus step from described urceolus is stretched out, described inner core projection and described urceolus the first barrier structure phase Support to prevent described inner core from sliding to one end away from described needle point of urceolus;
Elastic component, described elastic component is enclosed within described needle stand, and between described needle stand step and described urceolus step, Before entering safe condition, described elastic component is compressed with described urceolus step by described needle stand step;
During entering safe condition, rotate inner core and make it make described needle stand projection relative to the rotation of described needle stand Stagger with described inner core the first barrier structure and make inner core projection stagger with described urceolus the first barrier structure simultaneously, institute State elastic component along described inner core length direction stretch to provide thrust, described needle stand described elastic component promotion downslide Enter until described needle stand projection offsets with described inner core the second barrier structure in described inner core, described inner core and described needle stand Skid off until described inner core is raised and described urceolus away from one end of needle point to urceolus under the promotion of described thrust together Second barrier structure offsets and stops sliding, and the needle point of the most described needle body enters in described urceolus, i.e. enters safe condition.
Safety puncture needle the most according to claim 1, it is characterised in that the inwall of described inner core is provided with edge The inner core gathering sill that the length direction of inner core extends, described inner core gathering sill extends to described inner core near described needle point One end is also provided with inner core gathering sill entrance at this end, and described needle stand projection can enter institute by described inner core gathering sill entrance Stating inner core gathering sill and the bearing of trend along described inner core gathering sill slides, this end of inner core is not provided with described inner core gathering sill The end wall of porch forms described inner core the first barrier structure.
Safety puncture needle the most according to claim 2, it is characterised in that the inwall of described urceolus has edge The urceolus gathering sill that the length direction of urceolus extends, described urceolus gathering sill has urceolus gathering sill opening, described inner core Projection can enter described urceolus gathering sill the extension side along described urceolus gathering sill by described urceolus gathering sill opening To slip.
Safety puncture needle the most according to claim 3, it is characterised in that before entering safe condition, institute State an end of inner core and stretch out for operator hand-held to rotate described inner core from described urceolus away from one end of needle point.
Safety puncture needle the most according to claim 3, it is characterised in that the close described pin of described inner core One end of point is additionally provided with cooperation breach, and described cooperation breach extends to the termination of described this end of inner core, and is provided with at this end Outlet along described inner core length direction;Described urceolus also has a circumferentially extending open-work along described urceolus, described outside Cylinder gathering sill is communicated with described open-work by urceolus gathering sill opening;Described safety puncture needle also include being enclosed within described outside Rotation ring outside Tong, described rotation ring inwall is provided with stirs pawl, described in stir pawl through described urceolus open-work after stretch into In described cooperation breach and coordinate with the described sidewall coordinating breach;Rotate the rotation the most rotatable described inner core of ring, when described Inner cylinder rotating to described inner core projection enters described urceolus gathering sill and along described urceolus gathering sill to away from needle point one end Time slip in direction, described in stir pawl and coordinate breach to depart from by the outlet of described cooperation breach with described.
Safety puncture needle the most according to claim 5, it is characterised in that the cooperation breach of described inner core with Described inner core projection is adjacent.
Safety puncture needle the most according to claim 5, it is characterised in that the cooperation breach of described inner core is opened It is located in described inner core projection.
8. according to the safety puncture needle described in claim 6 or 7, it is characterised in that the two of described inner core projection End respectively with the described two ends coordinating breach on the direction of axis being perpendicular to described inner core concordant.
Safety puncture needle the most according to claim 5, it is characterised in that described urceolus is away from described needle point One end offer anchor window, described anchor window is positioned at the termination of described urceolus gathering sill, in the secure state, Described inner core projection enters described anchor window, and a sidewall of described anchor window constitutes described urceolus the second blocking junction Structure offsets stop described inner core continuation to the slide outside of urceolus with one end of described inner core projection.
Safety puncture needle the most according to claim 9, it is characterised in that be additionally provided with in described anchor window Stop arm, described stop arm extends along the bearing of trend of described urceolus gathering sill from the end of described urceolus gathering sill, institute State the end inner inclination to described urceolus of stop arm, in the secure state, described inner core projection be stuck in described outside Can not move relative to described urceolus between cylinder the second barrier structure and the end of stop arm.
11. safety puncture needles according to claim 1, it is characterised in that described inner core the second barrier structure For inner core step.
12. safety puncture needles according to claim 1, it is characterised in that in the secure state, described bullet Property part is still in the state compressed.
13. safety puncture needles according to claim 10, it is characterised in that described needle stand outer wall is provided with Two described needle stand projections being oppositely arranged, the inwall of described inner core is provided with two described inner cores being oppositely arranged and guides Groove, two described needle stand projections can enter in two described inner core gathering sills by one_to_one corresponding;Described inner core is provided with two phases To the described inner core projection arranged, described urceolus is provided with two described urceolus gathering sills being oppositely arranged, in two described Cylinder projection can enter in two described urceolus gathering sills by one_to_one corresponding.
14. safety puncture needles according to claim 13, it is characterised in that the outer wall of described inner core is provided with Two described cooperation breach being oppositely arranged, described urceolus is provided with two described open-works being oppositely arranged, described rotation ring Inwall be provided with two be oppositely arranged described in stir pawl, stir pawl described in two correspondingly through two described open-works In stir corresponding described cooperation breach.
15. safety puncture needles according to claim 14, it is characterised in that described urceolus is provided with two points The described anchor window that the two of inner core inner core projection Yong Yu not positioned.
16. according to the safety puncture needle according to any one of claim 10,13,14 or 15, it is characterised in that Described urceolus includes cylinder and the cylinder cap being connected with described cylinder one end, described open-work, urceolus gathering sill and anchor window Being each provided on described cylinder, described urceolus step is located at one end of described cylinder cap, and one end of described needle stand and needle body are certainly This end of described cylinder cap stretches out, and the outer wall of one end that described cylinder is connected with described cylinder cap is provided with two companies being oppositely arranged Connecing projection, one end that described cylinder cap is connected with described cylinder has two connection draw-in grooves being oppositely arranged, two described companies Connect projection to insert one to one in two connection draw-in grooves.
17. want the safety puncture needle described in 16 according to right, it is characterised in that the inwall of described cylinder cap has edge The cylinder cap locating slot that described cylinder cap length direction extends, before being introduced into safe condition, described needle stand projection is positioned at institute State in a cap locating slot and under the restriction of the sidewall of described cylinder cap locating slot in the circumferential direction along described cylinder cap with Described cylinder cap keeps geo-stationary, when described inner cylinder rotating to its inner core gathering sill aligns with described cylinder cap locating slot, Described needle stand projection enters described inner core gathering sill under the effect of described thrust.
18. safety puncture needles according to claim 1, it is characterised in that described needle body has from its needle point Extending to the endoporus of its end, described needle stand is provided with, away from described needle point one end, the aerofluxus that the endoporus with described needle body communicates Joint.
CN201410415694.5A 2014-08-22 2014-08-22 A kind of safety puncture needle Active CN104189974B (en)

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US20060282044A1 (en) * 1999-12-23 2006-12-14 Owais Mohammed Hypodermic syringe needle assembly
JP4013239B2 (en) * 2000-10-23 2007-11-28 ニプロ株式会社 Indwelling needle assembly
CN101229405A (en) * 2007-01-22 2008-07-30 许明正 Medical treatment appliance with pumpback force
CN202982788U (en) * 2012-08-31 2013-06-12 福建省百仕韦医用高分子股份有限公司 Automatic needle removing opening type remaining needle with extensible protective sleeve

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