CN104189974A - Security puncture needle - Google Patents
Security puncture needle Download PDFInfo
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- CN104189974A CN104189974A CN201410415694.5A CN201410415694A CN104189974A CN 104189974 A CN104189974 A CN 104189974A CN 201410415694 A CN201410415694 A CN 201410415694A CN 104189974 A CN104189974 A CN 104189974A
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- inner core
- urceolus
- needle
- gathering sill
- needle stand
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Abstract
The invention discloses a security puncture needle which comprises a needle base, a needle body, an inner cylinder, an outer cylinder and an elastic piece. Before the security puncture needle is in the security state, the needle body stretches out of one end of the outer cylinder. After puncture is completed, the inner cylinder is rotated so that the needle base can enter the inner cylinder, the inner cylinder and the needle base slide from one end of the outer cylinder to the other end of the outer cylinder, so that a needle tip enters the outer cylinder, people are prevented from being injured by a used puncture needle, and the security puncture needle is easy, convenient and fast to operate. The needle base and the inner cylinder cannot return to the normal position if no big enough force is applied particularly, and therefore the security puncture needle is more reliable in safety. According to the security puncture needle, the defect that an existing used puncture needle is likely to puncture people is overcome, and people can be prevented from being punctured by the used puncture needle.
Description
Technical field
The present invention relates to medical transfusion device.Be 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.While metal pin being penetrated when human transfusion to the blood vessel of human body, can bring pain to patient.If disease need to repeatedly be infused, need repeatedly to puncture.Remaining needle can overcome the above problems, and remaining needle generally comprises piercing assembly and infusion set, completes after puncture, and piercing assembly and human body depart from.A part for the soft transfusion needle of infusion set is retained in human vas, in the time infusing next time, can be communicated with transfusion needle and tube for transfusion is infused, and does not need to puncture again.
Puncture needle is disposable medical article, and in order to prevent that disease from propagating by blood, puncture needle goes out of use and process after finishing using.Current processing is, puncture needle is from human body departs from, on pinhead sleeve, the protective cover of plastics prevents from stabbing medical worker and medical waste treatment people, but protective cover is just enclosed within on puncture needle simply, be easy to come off, be still easy to stab medical worker and garbage disposal personnel and cause the infection of disease.
Summary of the invention
The technical problem that the present invention solves is to overcome the shortcoming of the existing easy scathing of puncture needle of finishing using, and a kind of safety puncture needle that prevents the puncture needle scathing of finishing using is provided.
Safety puncture needle of the present invention, comprising:
Needle body, has the needle point for skin puncture 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 the needle stand step towards the needle point of 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 of described inner core has inner core projection, entering before safe condition, described needle stand stretches in described inner core away from one end of described needle point, and described needle stand projection and described inner core the first barrier structure offset and prevent that described needle stand from moving in described inner core;
Urceolus, described urceolus has urceolus the first barrier structure and urceolus the second barrier structure, one end of described outer tube inner wall also has urceolus step, entering before safe condition, described inner core and needle stand are all positioned at described urceolus, stretch out one end that described needle body is provided with urceolus step from described urceolus, and described inner core projection and described urceolus the first barrier structure offset to prevent that described inner core from sliding to one end away from described needle point of urceolus;
Elastic component, described elastic component is enclosed within on described needle stand, and between described needle stand step and described urceolus step, and entering before safe condition, described elastic component is compressed by described needle stand step and described urceolus step;
In the process that enters safe condition, rotating inner core makes it described needle stand projection and described inner core the first barrier structure be staggered and make inner core projection and described urceolus the first barrier structure stagger simultaneously with respect to described needle stand rotation, described elastic component stretches to provide thrust along the length direction of described inner core, described needle stand slips in described inner core until described needle stand projection and described inner core the second barrier structure offset under the promotion of described elastic component, described inner core skids off away from one end of needle point to urceolus until described inner core projection and described urceolus the second barrier structure offset and stops slip together with described needle stand under the promotion of described thrust, now the needle point of described needle body enters in described urceolus, enter safe condition.
As preferably, the inwall of described inner core is provided with the inner core gathering sill extending along the length direction of inner core, described inner core gathering sill extends to described inner core and is provided with inner core gathering sill entrance near one end of described needle point and at this end, described needle stand projection can be entered described inner core gathering sill and be slided along the bearing of trend of described inner core gathering sill by described inner core gathering sill entrance, and the end wall that this end of inner core does not arrange 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 extending along the length direction of urceolus, described urceolus gathering sill has urceolus gathering sill opening, and described inner core projection can be entered described urceolus gathering sill and be slided along the bearing of trend of described urceolus gathering sill by described urceolus gathering sill opening.
As preferably, entering before safe condition, an end of described inner core is stretched out for operator hand-held to rotate described inner core from described urceolus away from one end of needle point.
As preferably, one end of the close described needle point of described inner core is also provided with engages indentation, and described engages indentation extends to the termination of described this end of inner core, and is provided with along the outlet of described inner core length direction at this end; Described urceolus also has along the open-work of the circumferential extension of described urceolus, and described urceolus gathering sill communicates with described open-work by urceolus gathering sill opening; Described safety puncture needle also comprises the ring that revolves that is enclosed within described urceolus outside, described in revolve ring inwall and be provided with and stir pawl, described in stir pawl through stretching in described engages indentation after the open-work of described urceolus and coordinating with the sidewall of described engages indentation; Revolving ring is rotatable described inner core, when described inner cylinder rotating to described inner core projection enter described urceolus gathering sill and along described urceolus gathering sill when sliding away from needle point one extreme direction, described in stir outlet and the described engages indentation disengaging of pawl by described engages indentation.
As preferably, the engages indentation of described inner core is adjacent with described inner core projection.
As preferably, the engages indentation of described inner core is opened in described inner core projection.
As preferably, the two ends of described inner core projection are concordant in the direction perpendicular to described inner core axis with the two ends of described engages indentation respectively.
As preferably, described urceolus offers anchor window away from one end of described needle point, described anchor window is positioned at the termination of described urceolus gathering sill, under safe condition, described inner core projection enters described anchor window, and one end that a sidewall of described anchor window forms described urceolus the second barrier structure and described inner core projection offsets and stops that described inner core continues the slide outside to urceolus.
As preferably, in described anchor window, be also provided with stop arm, described stop arm is extended along the bearing of trend of described urceolus gathering sill from the end of described urceolus gathering sill, the end of described stop arm is to the inner inclination of described urceolus, under safe condition, described inner core projection is stuck between described the second barrier structure and the end of stop arm and can not moves with respect to described urceolus.
As preferably, described inner core the second barrier structure is inner core step.
As preferably, under safe condition, described elastic component is still in compressed state.
As preferably, described needle stand outer wall is provided with two described needle stand projections that are oppositely arranged, and the inwall of described inner core is provided with two described inner core gathering sills that are oppositely arranged, and two described needle stand projections one by one correspondence enter in two described inner core gathering sills; Described inner core is provided with two described inner core projections that are oppositely arranged, and described urceolus is provided with two described urceolus gathering sills that are oppositely arranged, and two described inner core projections one by one correspondence enter in two described urceolus gathering sills.
As preferably, the outer wall of described inner core is provided with two described engages indentation that are oppositely arranged, described urceolus is provided with two described open-works that are oppositely arranged, the described inwall that revolves ring be provided with two be oppositely arranged described in stir pawl, described in two, stir pawl correspondingly through stirring corresponding described engages indentation in two described open-works.
As preferably, described urceolus is provided with two and is respectively used to two of inner core anchor windows that inner core projection positions.
As preferably, described urceolus comprises cylindrical shell and the cylinder cap being connected with described cylindrical shell one end, described open-work, urceolus gathering sill and anchor window are all located on described cylindrical shell, described urceolus step is located at one end of described cylinder cap, and one end of described needle stand and needle body stretch out from this end of described cylinder cap, described cylindrical shell is provided with two connection projections that are oppositely arranged with the outer wall of one end that described cylinder cap is connected, one end that described cylinder cap is connected with described cylindrical shell has two connection draw-in grooves that are oppositely arranged, and two described connection projections are inserted one to one two and connected in draw-in groove.
As preferably, the inwall of described cylinder cap has the cylinder cap locating slot extending along described cylinder cap length direction, before not entering safe condition, described needle stand projection is positioned at described cylinder cap locating slot relative static with the maintenance of described cylinder cap in the circumferential direction along described cylinder cap under the restriction of the sidewall of described cylinder cap locating slot, in the time that described inner cylinder rotating aligns with described cap cylinder locating slot to its inner core gathering sill, described needle stand projection enters described inner core gathering sill under the effect of described thrust.
As preferably, described needle body has the endoporus that extends to its end from its needle point, and described needle stand is provided with away from described needle point one end the exhaust joint communicating with the endoporus of described needle body.
Of the present inventionly compare with safety puncture needle prior art, there is following beneficial effect:
1, the operation that safety puncture needle of the present invention only needs a rotation to stir pawl can complete needle stand and enter inner core, inner core and needle stand slide into the action of the other end from one end of urceolus, thereby make needle point enter urceolus, realization prevents the object of hurting sb.'s feelings with the puncture needle of crossing, and it is simple and convenient.Because elastic component can produce reverse thrust when compressed, if therefore specially do not apply enough large power, needle stand and inner core can repositions, and its safety is more reliable.
2, the gathering sill of inner core and/or urceolus setting can make the motion of needle stand more stable, thereby makes the action of whole safety puncture needle more reliable and more stable.
3, the open-work of the engages indentation of the inner core of safety puncture needle of the present invention, urceolus and the operation that medical worker both can be rotated inner core after medical worker extracts puncture needle that is arranged so that of revolving ring make it enter safe condition, also can in the time that puncture needle is also stayed in blood vessel, operate, can pull out pin operation.Adopt safety puncture needle of the present invention, only need to complete after puncture, revolve ring, the action that the thrust of utilizing the stretching, extension of elastic component to produce makes to pull out pin sooner, more stable, thereby minimizing patient's misery and the damage of the needle point of puncture needle to blood vessel.And in pulling out pin, entered safe condition, this makes medical worker's more simple and fast of operation.In addition, when medical worker completes puncture, its finger is just being pinched and is being revolved ring place, and now, medical worker's finger does not need change place, and directly revolving ring can realize the operation of pulling out pin and enter safe condition, can prevent that the puncture needle that hands change place causes from rocking.
4, urceolus offers anchor window away from one end of needle point, in anchor window, be also provided with stop arm, stop arm is extended along the bearing of trend of urceolus gathering sill from the end of urceolus gathering sill, the end of stop arm is to the inner inclination of urceolus, under safe condition, inner core projection is stuck between the sidewall of anchor window and the end of stop arm and can not on the axis direction that is parallel to urceolus, moves with respect to urceolus.Like this, except safety puncture needle is applied to destructive strength, can not change the structure under safe condition, make the safe condition of puncture needle more reliable.
5, needle stand outer wall is provided with two needle stand projections that are oppositely arranged, the inwall of inner core is provided with two inner core gathering sills that are oppositely arranged, under safe condition, two needle stand projections one by one correspondence enter in two inner core gathering sills, inner core is provided with two inner core projections that are oppositely arranged, urceolus is provided with two urceolus gathering sills that are oppositely arranged, and under safe condition, two inner core projections one by one correspondence enter in two urceolus gathering sills.Above-mentioned setting can make entering in security process, the stressed balance more of each parts, and the motion of needle stand and inner core is more stable, thereby makes the action of whole safety puncture needle more reliable.
6, the cylinder cap that urceolus comprises cylindrical shell and is connected near the end of needle point one with cylindrical shell, cylindrical shell connects by being connected projection and being connected draw-in groove with a cap.Like this, in the time that assembling is of the present invention, can first needle stand and inner core be assembled together, again inner core is assemblied in the cylindrical shell of urceolus, a part for needle stand and needle body is stretched out from one end of cylinder cap, finally connect cylindrical shell and the cylinder cap of urceolus, make the assembling of safety puncture needle of the present invention more convenient.
Brief description of the drawings
Fig. 1 is the safety puncture needle of the one embodiment of the invention schematic appearance before entering safe condition.
Fig. 2 is the safety puncture needle of the one embodiment of the invention schematic appearance under safe condition.
Fig. 3 is the needle stand of safety puncture needle and the structural representation of needle body 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 of safety puncture needle and the fiting relation figure of needle stand of one embodiment of the invention.
Fig. 6 is the structural representation of the cylindrical shell of the urceolus of the safety puncture needle of one embodiment of the invention.
Fig. 7 be the urceolus of the safety puncture needle of one embodiment of the invention cylinder cap and cylindrical shell, revolve encircle and elastic component coordinate schematic diagram.
Fig. 8 is the structural representation that revolves ring of the safety puncture needle of one embodiment of the invention.
Fig. 9 is the safety puncture needle of the one embodiment of the invention structural representation before entering safe condition, has omitted a cap that revolves ring and urceolus in this figure.
Figure 10 is the structural representation that the safety puncture needle of one embodiment of the invention overlapped with the soft pin of indwelling and outer protection before entering safe condition.
Figure 11 is the safety puncture needle of the one embodiment of the invention structural representation under safe condition.
Reference numeral
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-engages indentation, 37-outlet;
4-urceolus, 41-cylindrical shell, 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, 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-protective sleeve.
Detailed description of the invention
As shown in Fig. 1,2,10,11, safety puncture needle of the present invention, comprising: needle stand 1, needle body 2, inner core 3, urceolus 4 and elastic component 5.Safety puncture needle of the present invention forms remaining needle together with the soft pin 7 of indwelling, and before use safety puncture needle, the soft pin 7 of indwelling is enclosed within on the needle body 2 of safety puncture needle of the present invention, and the soft pin 7 of indwelling is outer generally also can be overlapped and have protective sleeve 8, as shown in figure 10.
As shown in Figure 3, the outer wall of described needle stand 1 is provided with needle stand projection 13, and in the present embodiment, needle stand 1 comprises stylolitic part 11 and barrel 12, one end of one end of stylolitic part 11 and barrel 12 is fixed together, and the rear end of barrel 12 is connected with exhaust joint 15.Needle stand projection 13 is located at barrel 12 near termination.The stylolitic part 11 of described needle stand 1 is fixed with needle body 2, and the outer wall of needle stand 1 also has the needle stand step 14 towards the needle point of needle body, in order to the direction extruding elastic component 5 to needle point 21, will introduce in the back about elastic component 5.Preferably, needle stand step 14 is that be connected with barrel 12 by stylolitic part 11 end face of position forms.
As shown in Figure 3, described needle body 2 is fixed on one end of described needle stand 1, 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 for skin puncture and blood vessel.Needle body also has the endoporus extending to its end 22 from its needle point.Needle body 2 passes whole stylolitic part 11 along the axis of stylolitic part 11, and needle 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 communicated with exhaust joint 15.
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, the outer wall of described inner core 3 has inner core projection 35, entering before safe condition, described needle stand 1 only has away from one end of described needle point 21 and stretches in described inner core 3, and described needle stand projection 13 offsets and prevents that described needle stand 1 is to the interior movement of described inner core 3 with described inner core the first barrier structure 33;
As shown in Figure 6, described urceolus 4 has urceolus the first barrier structure and urceolus the second barrier structure 416, one end of described outer tube inner wall also has urceolus step 423 (as shown in Figure 7), entering before safe condition, described inner core 3 and needle stand 1 are all positioned at described urceolus, stretch out one end that the needle point 21 of described needle body is provided with urceolus step 423 from described urceolus 3, and described inner core projection 35 offsets to prevent that with described urceolus the first barrier structure described inner core 3 from sliding to one end away from described needle point 21 of urceolus 4.
As shown in Fig. 7 and Fig. 9, described elastic component 5 is enclosed within on described needle stand 1, and between described needle stand step 14 and described urceolus step 423, entering before safe condition, described elastic component 5 is compressed with described urceolus step 423 by described needle stand step 14, as shown in figure 10.As preferably, under safe condition, described elastic component 5 is still compressed by needle stand step 14 and urceolus step 423.In this application, elastic component 5 is helical spring, and certainly, as an alternative, other forms of spring also can adopt.
In the process that enters safe condition, rotating inner core 3 makes it described needle stand projection 13 be staggered with described inner core the first barrier structure 33 and make inner core projection 13 and described urceolus the first barrier structure stagger simultaneously with respect to described needle stand 1 and urceolus 4 rotations, described elastic component 5 stretches to provide described thrust along the length direction of described inner core 3, described needle stand 1 slips in described inner core 3 until described needle stand projection 13 offsets with described inner core the second barrier structure 34 under the promotion of described elastic component 5, described inner core 3 skids off away from one end of needle point to urceolus 4 under the promotion in described thrust until described inner core projection 35 offsets and stops sliding with described urceolus the second barrier structure 416 together with described needle stand 1, now the needle point 21 of described needle body enters in described urceolus 4, enter safe condition.Wherein, rotate inner core and can adopt various schemes, its preferred version and replacement scheme will have detailed introduction in the back.
Safety puncture needle of the present invention only needs one to rotate the operation of inner core and can complete needle stand 1 and enter inner core 3, inner core 3 and needle stand 1 slide into the action of the other end from one end of urceolus 4, thereby make needle point 21 enter urceolus 4, realization prevents the object of hurting sb.'s feelings with the puncture needle of crossing, and it is simple and convenient.Under safe condition, overcome the power that elastic component distortion produces enough greatly if specially do not applied, needle stand and inner core 3 can repositions, 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 31 extending along the length direction of inner core 3, and at it, the one end near needle point 21 is provided with inner core gathering sill entrance to described inner core gathering sill 31.Described needle stand projection 13 can be entered described inner core gathering sill 31 and be slided along the bearing of trend of described inner core gathering sill 31 by described inner core gathering sill entrance, and inner core end wall does not arrange described inner core gathering sill porch and forms described inner core the first barrier structure 33.Entering before safe condition, needle stand projection 13 and the inner core gathering sill entrance of described needle stand 1 stagger.In the present embodiment, described inner core the second barrier structure 34 is for to be located at inner core 3 away from the inner core step on one end inwall of described needle point 21.
Inner core 3 is rotated with respect to needle stand 1, in the process of rotating at described inner core 3, needle stand projection 13 staggers and enters described inner core gathering sill 31 by the entrance of described inner core gathering sill 31 with described inner core the first barrier structure 33, and described needle stand projection 13 is slided and made described needle stand 1 enter described inner core 3 and move away from one end of described needle point 21 to described inner core 3 along described inner core gathering sill 31 under the effect of the thrust along described inner core 3 length directions.
In the present embodiment, described inner core gathering sill 31 extends to the end of inner core 3, and be provided with the described inner core gathering sill entrance extending along inner core gathering sill 31 in end, inner core 3 is thinner at the wall of part that inner core gathering sill entrance is set, thicker at the wall that inner core gathering sill porch is not set, as shown in Figure 5, this thicker part forms described inner core the first barrier structure 33, or increases not the thickness of position, inlet porting place and make it form inner core the first barrier structure.As the replacement scheme (not shown) of above-mentioned inner core the first barrier structure 33, also can on the inwall of inner core, offer along the stopper slot of the circumferential extension of described inwall, described needle stand projection reaches in described stopper slot, and can only be in described stopper slot circumferentially sliding with respect to described inwall along inwall, the sidewall that now stopper slot restriction needle stand moves along inner core length direction forms inner core the first barrier structure, and described inner core gathering sill 31 offers the entrance communicating with described stopper slot.
Inner core gathering sill 31 be arranged so that needle stand is in the process that slips into described inner core, along straight line stable motion, make needle body can not produce and rock in extracting.
As shown in Figure 6, as preferably, the inwall of described urceolus 4 has the urceolus gathering sill 411 extending along the length direction of urceolus 4, and described urceolus gathering sill 411 has urceolus gathering sill opening 412.Described inner core projection 35 can be entered described urceolus gathering sill 411 and be slided along the bearing of trend of described urceolus gathering sill 411 by described urceolus gathering sill opening 412.
As preferably, as Fig. 5, described inner core 3 is also provided with engages indentation 36 near one end of described needle point, and described engages indentation 36 extends to the termination of described inner core 3 these ends, and is provided with the outlet 37 along described inner core length direction at this end.As Fig. 6, described urceolus 4 also has along the open-work 413 of the circumferential extension of described urceolus 4, described urceolus gathering sill 411 communicates with described open-work 413 by urceolus gathering sill opening 412, entering before 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 in urceolus, to slide under the effect of spring force.
Described safety puncture needle also comprises that being enclosed within revolving of described urceolus 4 outsides encircles 6, on the described inwall that revolves ring, arrange and stir pawl 61, the described pawl 61 of stirring stretches in described engages indentation 36, as shown in Fig. 7, Fig. 8, Fig. 9 and Figure 10 through after the open-work 413 of described urceolus 4.Rotate when inner core, at urceolus gathering sill 411 described in described inner core projection 35 enters described urceolus gathering sill 411 tailing edge when sliding away from needle point 21 1 extreme directions, described in stir pawl 61 and skid off with described engages indentation 36 and depart from from the outlet 37 of described engages indentation 36.Certainly, be that inner core 3 moves, revolve ring 6 motionless, be to stir pawl 61 and engages indentation 36 relative motioies.
In the present embodiment, engages indentation 36 is preferably the mating groove being located on inner core outside, and as an alternative, engages indentation 36 can also be open-work.Revolve on ring 6 and be preferably and be carved with arrow, while operation to illustrate, turn the direction of gyratory 6.
At present medical worker is in the time pulling out pin action, and hands has shake unavoidably, and the speed of pulling out pin is also slow, and this increases damage to blood vessel and patient's misery.The engages indentation 36 of the inner core of safety puncture needle of the present invention, the open-work 413 of urceolus and the operation that medical worker both can be rotated inner core after medical worker extracts puncture needle that is arranged so that of revolving ring 6 make it enter safe condition, also can in the time that puncture needle is also stayed in blood vessel, operate, can pull out pin operation.Adopt safety puncture needle of the present invention, only need to complete after puncture, revolve ring 6, utilize action that the thrust of elastic component 5 makes to pull out pin sooner, more stable, thereby minimizing patient's misery and the damage of the needle point of puncture needle to blood vessel.And in pulling out pin, entered safe condition, this makes medical worker's more simple and fast of operation.
While pulling out pin due to medical worker, need a hands to pin the part of the soft pin 7 of indwelling, prevent that soft pin from being taken out of, therefore only have another hand-lifting pin, rock if another hands change place can cause puncture needle to produce, increase patient's misery.The more noticeable advantage of the solution of the present invention is that, when medical worker completes puncture, its finger is just being pinched and revolved ring place, now, medical worker's finger does not need change place, directly revolves ring 6 and can realize the operation of pulling out pin and enter safe condition, as shown in figure 11.
The replacement scheme of above-mentioned rotation inner core is, entering before safe condition, an end of described inner core 3 is stretched out for operator hand-held to rotate described inner core from described urceolus away from one end of needle point.This set is with respect to such scheme, and structure is simpler, but operation is be not as convenient as such scheme.
As preferably, as shown in Figure 5, the engages indentation 36 of described inner core 3 is opened in described inner core projection 35, and an inner core projection 35 is divided into two parts, and in the present embodiment, engages indentation 36 is opened in the middle part of described inner core projection 35.As an alternative, the engages indentation 36 of described inner core is adjacent with described inner core projection 35, is specially, and inner core projection 35 is connected near the upper end of the sidewall of described engages indentation with engages indentation near the bottom of the sidewall of described engages indentation.
In the present embodiment, as shown in Figure 4, the two ends of described inner core projection 35 are concordant in the direction perpendicular to described inner core 3 axis with the two ends of described engages indentation 36 respectively, the two ends of inner core projection 35 on its length direction respectively with the two ends of engages indentation 36 on its length direction corresponding alignment respectively.
As preferably, as shown in Figure 6, described urceolus 4 offers anchor window 414 away from one end of described needle point 21, and described anchor window 414 is positioned at the termination of described urceolus gathering sill 411.Under safe condition, described inner core projection 35 enters described anchor window 414 from urceolus gathering sill 411.A sidewall of described anchor window 414 and one end of described inner core projection 35 offset and stop that inner core 3 continues to the slide outside of urceolus 4, and this sidewall of anchor window 414 forms described urceolus the second barrier structure 416.
As preferably, in described anchor window 414, be also provided with stop arm 415, described stop arm 415 is extended along the bearing of trend of described urceolus gathering sill 411 from the end of described urceolus gathering sill 411, the end of described stop arm 415 is to the inner inclination of described urceolus 4, under safe condition, described inner core projection 35 is stuck between described urceolus the second barrier structure 416 and the end of stop arm 415 and can not moves.Like this, only have safety puncture needle is applied to destructive strength, just can change safe condition.
As preferably, described needle stand 1 outer wall is provided with two needle stand projections 13 that are oppositely arranged, and the inwall of described inner core 3 is provided with two inner core gathering sills 31 that are oppositely arranged, and under safe condition, two needle stand projections 13 one by one correspondence enter in two inner core gathering sills 31.Described inner core 3 is provided with two inner core projections 35 that are oppositely arranged, described urceolus 4 is provided with two urceolus gathering sills 411 that are oppositely arranged and two open-works that are oppositely arranged 413, in the process that enters safe condition, two described inner core projections 35 one by one correspondence enter in two urceolus gathering sills 411.Above-mentioned setting can make the motion of needle stand and inner core more stable, thereby makes the action of whole safety puncture needle more reliable and more stable.
As preferably, the outer wall of described inner core 3 is provided with two engages indentation that are oppositely arranged 36, as shown in Figure 4.Described urceolus 4 is provided with two open-works that are oppositely arranged 413, as shown in Figure 6.Described revolve ring 6 inwall be provided with two be oppositely arranged stir pawl 61, as shown in Figure 8.Stir pawl 61 for two and enter correspondingly in two open-works 413 and stir corresponding engages indentation 36, as shown in Figure 9 and Figure 10.This setting can make inner core in the process of rotating, stressed more even, thereby makes the motion of a parts more stable, and safety is higher.Certainly, inner core only arranges an engages indentation 36, and urceolus 4 only arranges an open-work 413 also can complete operation of the present invention.
In the present embodiment, described urceolus 4 is provided with two and is respectively used to two of inner core 3 anchor windows that inner core projection 35 positions 414.
As preferably, as shown in Figure 3, one end that described needle stand 1 is not established described needle body 2 is provided with the exhaust joint 15 communicating with the end of described needle body, in the present embodiment, the end of needle stand, the end that is barrel is provided with V-shaped groove (not shown), and exhaust joint 15 is connected with the end of needle stand by V-shaped groove, prevents that blood from flowing out.。
As preferably, as shown in Figure 6 and Figure 7, the cylinder cap 42 that described urceolus 4 comprises cylindrical shell 41 and is connected near one end of described needle point 21 with described cylindrical shell 41, described open-work 413, urceolus gathering sill 411 and anchor window 414 are all located on described cylindrical shell 41.As shown in Figure 7, the diameter of described cylinder cap 42 dwindles to the other end with one end that described cylindrical shell 41 is connected from it, one end of described needle stand 1 and needle body stretch out from one end of described cylinder cap 42 minor diameters, and described urceolus step 423 is also arranged on one end of a cap 42 minor diameters, as shown in Figure 7.And the outer wall of described cylindrical shell 41 is provided with two connection projections 417 that are oppositely arranged with one end that described cylinder cap 42 is connected, one end that described cylinder cap 42 is connected with described cylindrical shell 41, there are two connection draw-in grooves 421 that are oppositely arranged, two described connection projections 417 are inserted one to one two and are connected in draw-in grooves 421, realize being connected of cylindrical shell 41 and a cap 42.Like this, in the time that assembling is of the present invention, can first needle stand and inner core be assembled together, again inner core is assemblied in the cylindrical shell of urceolus, a part for needle stand and needle body is stretched out from one end of cylinder cap, finally connect cylindrical shell and the cylinder cap of urceolus, make the assembling of safety puncture needle of the present invention more convenient.
As preferably, the inwall of described cylinder cap 42 has the cylinder cap locating slot 422 extending along described cylinder cap 42 length directions, before not entering safe condition, described needle stand projection 13 is positioned at described cylinder cap locating slot 422 and in the circumferential direction along described cylinder cap 42, keeps relative static with described cap 42 under the restriction of the sidewall of described cylinder cap locating slot 422, when described inner core 3 rotates while aliging with described cap cylinder locating slot 422 to its inner core gathering sill 31, described needle stand projection 13 enters described inner core gathering sill 31 under the effect of described thrust.Cylinder cap locating slot 422 can make needle stand projection 13 can not rotate in cylinder cap 42, thereby improves the stability of whole safety puncture needle.
Above embodiment is only exemplary embodiment of the present invention, is not used in restriction the present invention, and protection scope of the present invention is defined by the claims.Those skilled in the art in essence of the present invention and protection domain, various amendments that the present invention is made or be equal to replacement and also drop in protection scope of the present invention.
Claims (18)
1. a safety puncture needle, is characterized in that, comprising:
Needle body, has the needle point for skin puncture 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 the needle stand step towards the needle point of 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 of described inner core has inner core projection, entering before safe condition, described needle stand stretches in described inner core away from one end of described needle point, and described needle stand projection and described inner core the first barrier structure offset and prevent that described needle stand from moving in described inner core;
Urceolus, described urceolus has urceolus the first barrier structure and urceolus the second barrier structure, one end of described outer tube inner wall also has urceolus step, entering before safe condition, described inner core and needle stand are all positioned at described urceolus, stretch out one end that described needle body is provided with urceolus step from described urceolus, and described inner core projection and described urceolus the first barrier structure offset to prevent that described inner core from sliding to one end away from described needle point of urceolus;
Elastic component, described elastic component is enclosed within on described needle stand, and between described needle stand step and described urceolus step, and entering before safe condition, described elastic component is compressed by described needle stand step and described urceolus step;
In the process that enters safe condition, rotating inner core makes it described needle stand projection and described inner core the first barrier structure be staggered and make inner core projection and described urceolus the first barrier structure stagger simultaneously with respect to described needle stand rotation, described elastic component stretches to provide thrust along the length direction of described inner core, described needle stand slips in described inner core until described needle stand projection and described inner core the second barrier structure offset under the promotion of described elastic component, described inner core skids off away from one end of needle point to urceolus until described inner core projection and described urceolus the second barrier structure offset and stops slip together with described needle stand under the promotion of described thrust, now the needle point of described needle body enters in described urceolus, enter safe condition.
2. safety puncture needle according to claim 1, it is characterized in that, the inwall of described inner core is provided with the inner core gathering sill extending along the length direction of inner core, described inner core gathering sill extends to described inner core and is provided with inner core gathering sill entrance near one end of described needle point and at this end, described needle stand projection can be entered described inner core gathering sill and be slided along the bearing of trend of described inner core gathering sill by described inner core gathering sill entrance, and the end wall that this end of inner core does not arrange described inner core gathering sill porch forms described inner core the first barrier structure.
3. safety puncture needle according to claim 2, it is characterized in that, the inwall of described urceolus has the urceolus gathering sill extending along the length direction of urceolus, described urceolus gathering sill has urceolus gathering sill opening, and described inner core projection can be entered described urceolus gathering sill and be slided along the bearing of trend of described urceolus gathering sill by described urceolus gathering sill opening.
4. safety puncture needle according to claim 3, is characterized in that, entering before safe condition, an end of described inner core is stretched out for operator hand-held to rotate described inner core from described urceolus away from one end of needle point.
5. safety puncture needle according to claim 3, it is characterized in that, one end of the close described needle point of described inner core is also provided with engages indentation, and described engages indentation extends to the termination of described this end of inner core, and is provided with along the outlet of described inner core length direction at this end; Described urceolus also has along the open-work of the circumferential extension of described urceolus, and described urceolus gathering sill communicates with described open-work by urceolus gathering sill opening; Described safety puncture needle also comprises the ring that revolves that is enclosed within described urceolus outside, described in revolve ring inwall and be provided with and stir pawl, described in stir pawl through stretching in described engages indentation after the open-work of described urceolus and coordinating with the sidewall of described engages indentation; Revolving ring is rotatable described inner core, when described inner cylinder rotating to described inner core projection enter described urceolus gathering sill and along described urceolus gathering sill when sliding away from needle point one extreme direction, described in stir outlet and the described engages indentation disengaging of pawl by described engages indentation.
6. safety puncture needle according to claim 5, is characterized in that, the engages indentation of described inner core is adjacent with described inner core projection.
7. safety puncture needle according to claim 5, is characterized in that, the engages indentation of described inner core is opened in described inner core projection.
8. according to the safety puncture needle described in claim 6 or 7, it is characterized in that, the two ends of described inner core projection are concordant in the direction perpendicular to described inner core axis with the two ends of described engages indentation respectively.
9. safety puncture needle according to claim 5, it is characterized in that, described urceolus offers anchor window away from one end of described needle point, described anchor window is positioned at the termination of described urceolus gathering sill, under safe condition, described inner core projection enters described anchor window, and one end that a sidewall of described anchor window forms described urceolus the second barrier structure and described inner core projection offsets and stops that described inner core continues the slide outside to urceolus.
10. safety puncture needle according to claim 9, it is characterized in that, in described anchor window, be also provided with stop arm, described stop arm is extended along the bearing of trend of described urceolus gathering sill from the end of described urceolus gathering sill, the end of described stop arm is to the inner inclination of described urceolus, under safe condition, described inner core projection is stuck between described urceolus the second barrier structure and the end of stop arm and can not moves with respect to described urceolus.
11. safety puncture needles according to claim 1, is characterized in that, described inner core the second barrier structure is inner core step.
12. safety puncture needles according to claim 1, is characterized in that, under safe condition, described elastic component is still in compressed state.
13. safety puncture needles according to claim 10, it is characterized in that, described needle stand outer wall is provided with two described needle stand projections that are oppositely arranged, the inwall of described inner core is provided with two described inner core gathering sills that are oppositely arranged, and two described needle stand projections one by one correspondence enter in two described inner core gathering sills; Described inner core is provided with two described inner core projections that are oppositely arranged, and described urceolus is provided with two described urceolus gathering sills that are oppositely arranged, and two described inner core projections one by one correspondence enter in two described urceolus gathering sills.
14. safety puncture needles according to claim 13, it is characterized in that, the outer wall of described inner core is provided with two described engages indentation that are oppositely arranged, described urceolus is provided with two described open-works that are oppositely arranged, the described inwall that revolves ring be provided with two be oppositely arranged described in stir pawl, described in two, stir pawl correspondingly through stirring corresponding described engages indentation in two described open-works.
15. safety puncture needles according to claim 14, is characterized in that, described urceolus is provided with two and is respectively used to two of inner core anchor windows that inner core projection positions.
16. according to claim 10, 13, safety puncture needle in 14 or 15 described in any one, it is characterized in that, described urceolus comprises cylindrical shell and the cylinder cap being connected with described cylindrical shell one end, described open-work, urceolus gathering sill and anchor window are all located on described cylindrical shell, described urceolus step is located at one end of described cylinder cap, and one end of described needle stand and needle body stretch out from this end of described cylinder cap, described cylindrical shell is provided with two connection projections that are oppositely arranged with the outer wall of one end that described cylinder cap is connected, one end that described cylinder cap is connected with described cylindrical shell has two connection draw-in grooves that are oppositely arranged, two described connection projections are inserted one to one two and are connected in draw-in groove.
17. want the safety puncture needle described in 16 according to right, it is characterized in that, the inwall of described cylinder cap has the cylinder cap locating slot extending along described cylinder cap length direction, before not entering safe condition, described needle stand projection is positioned at described cylinder cap locating slot relative static with the maintenance of described cylinder cap in the circumferential direction along described cylinder cap under the restriction of the sidewall of described cylinder cap locating slot, in the time that described inner cylinder rotating aligns with described cap cylinder locating slot to its inner core gathering sill, described needle stand projection enters described inner core gathering sill under the effect of described thrust.
18. safety puncture needles according to claim 1, is characterized in that, described needle body has the endoporus that extends to its end from its needle point, and described needle stand is provided with away from described needle point one end the exhaust joint communicating with the endoporus of described needle body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410415694.5A CN104189974B (en) | 2014-08-22 | 2014-08-22 | A kind of safety puncture needle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410415694.5A CN104189974B (en) | 2014-08-22 | 2014-08-22 | A kind of safety puncture needle |
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| CN104189974A true CN104189974A (en) | 2014-12-10 |
| CN104189974B CN104189974B (en) | 2016-08-24 |
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| CN201410415694.5A Active CN104189974B (en) | 2014-08-22 | 2014-08-22 | A kind of safety puncture needle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107469189A (en) * | 2017-08-03 | 2017-12-15 | 安徽迈菲思医疗器械有限公司 | A kind of safety indwelling needle |
| CN109224192A (en) * | 2018-09-28 | 2019-01-18 | 江苏治宇医疗器材有限公司 | A kind of safety shield for single wing transfusion syringe |
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| US20020055716A1 (en) * | 2000-10-23 | 2002-05-09 | Hiroyuki Nakagami | Indwelling needle assembly |
| US20060282044A1 (en) * | 1999-12-23 | 2006-12-14 | Owais Mohammed | Hypodermic syringe 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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2014
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060282044A1 (en) * | 1999-12-23 | 2006-12-14 | Owais Mohammed | Hypodermic syringe needle assembly |
| US20020055716A1 (en) * | 2000-10-23 | 2002-05-09 | Hiroyuki Nakagami | 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107469189A (en) * | 2017-08-03 | 2017-12-15 | 安徽迈菲思医疗器械有限公司 | A kind of safety indwelling needle |
| CN109224192A (en) * | 2018-09-28 | 2019-01-18 | 江苏治宇医疗器材有限公司 | A kind of safety shield for single wing transfusion syringe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104189974B (en) | 2016-08-24 |
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