CN103990202A - Safety-type venous indwelling needle - Google Patents
Safety-type venous indwelling needle Download PDFInfo
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- CN103990202A CN103990202A CN201410216802.6A CN201410216802A CN103990202A CN 103990202 A CN103990202 A CN 103990202A CN 201410216802 A CN201410216802 A CN 201410216802A CN 103990202 A CN103990202 A CN 103990202A
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Abstract
The invention discloses a safety-type venous indwelling needle. The safety-type venous indwelling needle comprises a catheter assembly, a needle tube assembly and a transfusion and injection connector. An anti-needling protection assembly is arranged between a catheter base and a needle base. The anti-needling protection assembly comprises a protection base with a hollow structure, the protection base is provided with a penetrating channel allowing a needle tube to penetrate through, at least one specially-shaped movable body is arranged in the hollow inner portion of the protection base, and a through hole allowing the needle tube to penetrate through is formed in the specially-shaped movable body. When a steel needle penetrates the through hole, the specially-shaped movable body is balanced; after the needle tube is separated from the through hole of the specially-shaped movable body, the specially-shaped movable body turns over or inclines due to the fact that a supporting point is lost and cannot maintain the original state, so that the specially-shaped movable body blocks the steel needle penetrating channel, and therefore the anti-needling purpose is achieved. Meanwhile, during withdrawing of the venous indwelling needle, required tension force is smaller, and therefore the venous indwelling needle is more convenient and more reliable to use and has very good popularization prospects.
Description
Technical field
The invention belongs to infusion apparatus field, relate in particular to a kind of safe type venous retaining needle with anti-needling action.
Background technology
The use of venous detaining needle can reduce patient because of cause painful of venipuncture repeatedly and to the fear of having an injection, alleviate family members' impatience, be convenient to clinical application, suddenly, the rescue medication of critical patient, alleviate nurse's workload, reduce patient's pain, thereby venous detaining needle is in wide clinical application.
The withdraw of the needle after use of existing venous detaining needle, syringe needle is polluted by patient's blood, and medical personnel, pulling away or clear up while abandoning remaining needle, are easily stabbed by syringe needle and easily catch, discarded syringe needle is exposed simultaneously easily causes environmental pollution in environment, has serious potential safety hazard.
In Chinese patent CN201481960U, disclose a kind of safe type venous retaining needle with needle point shield assembly, the catch of upspringing of the elastic steel sheet in needle point shield assembly blocks needle tubing, needle tubing can not be passed again, thereby prevent needle stick injury medical personnel.But this elastic steel sheet is easily lost elasticity, once catch can not be upspring, just can not reach the effect that stops that needle tubing passes again, lost the function that prevents needle stick injury, there is potential safety hazard.In order to solve this type of technical problem, Chinese patent CN202822325U and CN203169724U all disclose a kind of anti-acupuncture protection assembly, and its principle is to adopt shell fragment to block or block needle tubing equally, and it can not be passed again.But anti-acupuncture protection assembly of the prior art has a common fault: because needle tubing is in the process being pulled out; in protecting seat, by elastic steel sheet, oppressed all the time and there is the trend being bent; cause the frictional force between described needle tubing and protecting seat very large; therefore medical personnel need to use very large power when extracting needle tubing; operation is inconvenience extremely; What is more also extracts the conduit that is arranged in vein owing to exerting all one's strength excessive, causes unnecessary malpractice.
Chinese patent 201310003103.9 has disclosed a kind of safe type retention needle, adopts external force that conduit through hole is stopped up, for stopping that needle tubing passes again.But such result is, once external force inefficacy, the target of anti-acupuncture protection just can not realize; If front end stopping means is free to slide under the effect of gravity in cavity again, needle tubing still has the probability again passing, so the bad and dangerous insurance for the effect of anti-acupuncture of this structure.
Summary of the invention
Defect in view of above-mentioned prior art exists, the object of the invention is to propose a kind of safe type venous retaining needle, makes venous detaining needle syringe needle after using the withdraw of the needle avoid exposed in environment, prevents cross infection and environmental pollution after acupuncture.
Another object of the present invention is to propose a kind of safe type venous retaining needle, makes venous detaining needle convenient and reliable when the withdraw of the needle, handling safety.
Object of the present invention will be achieved by the following technical programs:
A safe type venous retaining needle, comprises conduit tube component, needle tubing assembly and is connected to the transfusion joint on described conduit tube component, described conduit tube component comprises catheter block and is arranged on the conduit of described catheter block front end; Described needle tubing assembly comprises needle stand and is installed in the needle tubing on described needle stand, and described needle tubing is inserted in the inside of described conduit and catheter block; Between described catheter block and described needle stand, be provided with an anti-acupuncture protection assembly; Described anti-acupuncture assembly comprises that one has the protecting seat of hollow structure; described protecting seat is provided with the penetrating via passing for described needle tubing; the hollow inside of described protecting seat is equipped with at least one special-shaped mobile; described special-shaped mobile is provided with the through hole passing for described needle tubing; when described needle tubing departs from after the through hole of described special-shaped mobile, described special-shaped mobile loses strong point upset or tilts can not keep original situation again to such an extent as to stop up described penetrating via.
Preferably, described special-shaped mobile is that profile is spherical, triangle, and polygon or erose metalwork or working of plastics, when described needle tubing passes described through hole, gapped between described special-shaped mobile and described protecting seat.
Preferably, when the profile of described special-shaped mobile is while being spherical, described through hole is through the described spherical centre of sphere.
Preferably, described special-shaped mobile is flat head screw structure or the bullet structure with through hole, has one and holds greatly.
Preferably, be equipped with two while being two the above special-shaped mobiles on described needle tubing, being shaped as of described special-shaped mobile is identical or different.
Preferably, the inner chamber of described protecting seat has a wedge surface, and described wedge surface is located at a side of described protecting seat inner chamber.
Preferably, described protecting seat is formed by a cutting ferrule and a jam clamping, is equipped with the circular hole passing for described needle tubing in described cutting ferrule and jam, penetrating via described in described circular hole cavities formed co-axial, and described wedge surface is located at a side of described cutting ferrule inner chamber.
Preferably, the circular hole of described jam is step-like, and the minimum diameter of the circular hole of described jam is less than the maximum gauge of the flat body of described needle tubing.
Preferably, the embedded metal derby of described jam, described metal derby has a circular hole, and the diameter of described circular hole is less than the maximum gauge of the flat body of described needle tubing.
Preferably, the front end of described cutting ferrule is provided with projection, and the rear end of described catheter block is provided with the perforation of phase clamping with it.
Preferably, be provided with a batching pig in described catheter block, described batching pig is positioned at the front end of described protecting seat; Described catheter block is connected with note infusion connector by a long duct, and described long duct is provided with a flow-stopping clip; Described note infusion connector is needleless joint or positive pressure connector.
The present invention has also disclosed a kind of safe type venous retaining needle, comprises conduit tube component, needle tubing assembly and is connected to the transfusion joint on described conduit tube component, and described conduit tube component comprises catheter block and is arranged on the conduit of described catheter block front end; Described needle tubing assembly comprises needle stand and is installed in the needle tubing on described needle stand, and described needle tubing is inserted in the inside of described conduit and catheter block; Between described catheter block and described needle stand, be provided with an anti-acupuncture protection assembly; Described anti-acupuncture assembly comprises that one has the protecting seat of hollow structure; described protecting seat is provided with the penetrating via passing for described needle tubing; the hollow inside of described protecting seat is equipped with at least one special-shaped mobile; described special-shaped mobile is provided with the through hole passing for described needle tubing; when described needle tubing departs from after the through hole of described special-shaped mobile; the axis of described through hole and the axis of described penetrating via form angle, and described special-shaped mobile can not keep original situation again to such an extent as to stop up described penetrating via.
Preferably, described special-shaped mobile is that profile is spherical, triangle, and polygon or erose metalwork or working of plastics, when described needle tubing passes described through hole, gapped between described special-shaped mobile and described protecting seat.
Preferably, when the profile of described special-shaped mobile is while being spherical, described through hole is through the described spherical centre of sphere; When described special-shaped mobile is while having the flat head screw structure of through hole or bullet structure, it has an end greatly.
Preferably, be equipped with two while being two the above special-shaped mobiles on described needle tubing, being shaped as of described special-shaped mobile is identical or different.
Preferably, the inner chamber of described protecting seat has a wedge surface, and described wedge surface is located at a side of described protecting seat inner chamber.
Preferably, described protecting seat is formed by a cutting ferrule and a jam clamping, is equipped with the circular hole passing for described needle tubing in described cutting ferrule and jam, penetrating via described in described circular hole cavities formed co-axial, and described wedge surface is located at a side of described cutting ferrule inner chamber.
Preferably, the circular hole of described jam is step-like, and the minimum diameter of the circular hole of described jam is less than the maximum gauge of the flat body of described needle tubing.
Preferably, the embedded metal derby of described jam, described metal derby has a circular hole, and the diameter of described circular hole is less than the maximum gauge of the flat body of described needle tubing.
Preferably, the front end of described cutting ferrule is provided with projection, and the rear end of described catheter block is provided with the perforation of phase clamping with it.
The present invention has also disclosed a kind of safe type venous retaining needle, comprises conduit tube component, needle tubing assembly and is connected to the transfusion joint on described conduit tube component, and described conduit tube component comprises catheter block and is arranged on the conduit of described catheter block front end, described needle tubing assembly comprises needle stand and is installed in the needle tubing on described needle stand, and described needle tubing is inserted in the inside of described conduit and catheter block, between described catheter block and described needle stand, be provided with an anti-acupuncture protection assembly, described anti-acupuncture assembly comprises that one has the protecting seat of hollow structure, described protecting seat is provided with the penetrating via passing for described needle tubing, the hollow inside of described protecting seat is equipped with at least one special-shaped mobile, described special-shaped mobile is provided with the through hole passing for described needle tubing, the maximum inner diameter of the hollow inside of described protecting seat is greater than the maximum outside diameter of described special-shaped mobile, when described needle tubing departs from after the through hole of described special-shaped mobile, the axis of described penetrating via does not overlap with the axis of described through hole, described special-shaped mobile can not keep original situation again to such an extent as to stop up described penetrating via.
Preferably, described special-shaped mobile is that profile is spherical, triangle, and polygon or erose metalwork or working of plastics, when described needle tubing passes described through hole, gapped between described special-shaped mobile and described protecting seat.
Preferably, be equipped with two while being two the above special-shaped mobiles on described needle tubing, being shaped as of described special-shaped mobile is identical or different.
Preferably, the inner chamber of described protecting seat has a wedge surface, and described wedge surface is located at a side of described protecting seat inner chamber.
Preferably; described protecting seat is formed by a cutting ferrule and a jam clamping; in described cutting ferrule and jam, be equipped with the circular hole passing for described needle tubing; penetrating via described in described circular hole cavities formed co-axial; described wedge surface is located at a side of described cutting ferrule inner chamber, the maximum inner diameter that the maximum inner diameter of the hollow inside of described protecting seat is described cutting ferrule.
Beneficial effect of the present invention is mainly reflected in: anti-acupuncture protection assembly intention of the present invention is ingenious, simple in structure, can effectively prevent the harm such as needle stick injury, disease propagation and environmental pollution; In addition, the structure setting that wedge surface and large end match guarantees that the effect of anti-acupuncture can obtain 100% realization; The pulling force that venous detaining needle of the present invention needs when the withdraw of the needle is simultaneously less, more convenient, more reliable, has extraordinary promotion prospect.
Below just accompanying drawing in conjunction with the embodiments, is described in further detail the specific embodiment of the present invention, so that technical solution of the present invention is easier to understand, grasp.
Accompanying drawing explanation
Fig. 1 is the schematic diagram before use of preferred embodiment of anti-acupuncture protection assembly of the present invention;
Fig. 2 is the schematic diagram in use of preferred embodiment of anti-acupuncture protection assembly of the present invention;
Fig. 3 is the preferred embodiment of anti-acupuncture protection assembly of the present invention schematic diagram after use;
Fig. 4 is the preferred embodiment of anti-acupuncture protection assembly of the present invention second case schematic diagram after use;
Fig. 5 is the preferred embodiment of anti-acupuncture protection assembly of the present invention the 3rd illustration intention after use;
Fig. 6 is the schematic diagram before use of the second embodiment of anti-acupuncture protection assembly of the present invention;
Fig. 7 is the 3rd embodiment schematic diagram before use of anti-acupuncture protection assembly of the present invention;
Fig. 8 is the 4th embodiment schematic diagram before use of anti-acupuncture protection assembly of the present invention;
Fig. 9 is the schematic diagram of the 4th embodiment after use of anti-acupuncture protection assembly of the present invention;
Figure 10 is the first effect schematic diagram of the anti-acupuncture protection of fourth embodiment of the invention;
Figure 11 is the second effect schematic diagram of the anti-acupuncture protection of fourth embodiment of the invention;
Figure 12 is the 5th embodiment schematic diagram before use of anti-acupuncture protection assembly of the present invention;
Figure 13 is the schematic diagram of the 5th embodiment after use of anti-acupuncture protection assembly of the present invention;
Figure 14 is the first effect schematic diagram of the anti-acupuncture protection of fifth embodiment of the invention;
Figure 15 is the second effect schematic diagram of the anti-acupuncture protection of fifth embodiment of the invention.
The specific embodiment
The present invention has disclosed a kind of safe type venous retaining needle, as shown in Figure 1, comprises conduit tube component, needle tubing assembly and is connected to the transfusion joint 6 on described conduit tube component.Described conduit tube component comprises catheter block 2 and is arranged on the conduit 1 of described catheter block 2 front ends; Described needle tubing assembly comprises needle stand 3 and is installed in the needle tubing 4 on described needle stand 3, and described needle tubing 4 is inserted in the inside of described conduit 1 and catheter block 2.In described catheter block 2, be provided with a batching pig 11.Described catheter block 2 is connected with note infusion connector 6 by a long duct 7, and described long duct is provided with a flow-stopping clip 5.Described note infusion connector 6 is needleless joint or positive pressure connector.
In order to prevent the needle tubing 4 needle stick injury doctors of venous detaining needle, the present invention is provided with an anti-acupuncture protection assembly between described catheter block 2 and described needle stand 3.Described anti-acupuncture assembly comprises that one has the protecting seat of hollow structure; in this preferred embodiment; described protecting seat is formed by a cutting ferrule 8 and jam 9 clampings, in described cutting ferrule 8 and jam 9, is equipped with circular hole, two penetrating vias that circular hole cavities formed co-axial is passed for described needle tubing 4.The circular hole of described jam 9 is step-like, and the minimum diameter of the circular hole of described jam 9 is less than the maximum gauge of the flat body 16 of described needle tubing 4, when described needle tubing 4 is retreated, can be blocked by described jam 9.Wherein, flat body 16 belongs to prior art due to being flattened by needle tubing 4, does not repeat them here.Described cutting ferrule 8 and jam 9 form a hollow inside, are provided with a special-shaped mobile 10 in it, and described special-shaped mobile 10 is provided with the through hole 12 passing for described needle tubing 4.
Described special-shaped mobile 10 is that profile is spherical, triangle, polygon or erose metalwork or working of plastics.When described needle tubing 4 is during through described through hole 12, between described special-shaped mobile 10 and described protecting seat gapped 13.In this preferred embodiment, the profile of described special-shaped mobile 10 is spherical, and described through hole 12 is through the described spherical centre of sphere.Certainly, described through hole 12 also can eccentric setting, if can make described needle tubing 4 through.
In this preferred embodiment, the maximum inner diameter of the hollow inside of described protecting seat is the maximum inner diameter of described cutting ferrule 8.The maximum inner diameter of the hollow inside of described protecting seat is greater than the maximum outside diameter of described special-shaped mobile 10, to such an extent as to when described needle tubing 4 is during through described through hole 12, between described special-shaped mobile 10 and the inwall of described cutting ferrule 8 gapped 13.
During assembling; the needle tubing 4 that assembles special-shaped mobile 10 and jam 9 is fixed on described needle stand 3; then described jam 9 is carried out to clamping with described cutting ferrule 8; finally the needle tubing assembly having assembled and anti-acupuncture protection assembly is mounted on described catheter block 2, the end face of described cutting ferrule 8 can with described batching pig 11 butts.
In conjunction with Fig. 1 to Fig. 5, while needing to exit needle tubing 4, pull back needle stand 3 after the conduit 1 of venous detaining needle inserts in patient's vein, it drives needle tubing 4 to retreat.Meanwhile, due to the restriction of jam 9 end faces, described special-shaped mobile 10 is exiting at leisure in the front end of needle tubing 4, and is retained in the hollow inside of protecting seat.Further, the restriction due to the step-like circular hole of jam 9, in the process retreating, can be pulled away from described protecting seat together at described needle tubing 4 from catheter block 2.Specifically with reference to Fig. 3 to Fig. 5; now; because the maximum inner diameter of the hollow inside of described protecting seat is greater than the maximum outside diameter of described special-shaped mobile 10; be between described special-shaped mobile 10 and the inwall of described cutting ferrule 8 gapped 13; so; described special-shaped mobile 10 can complete and moves freely or tilt or overturn between the hollow inside of described protecting seat, the movement that for example Fig. 3 discloses, the rotation that Fig. 4 and Fig. 5 disclose.Like this; described special-shaped mobile 10 loses the strong point after mobile or upset or inclination; the axis of described through hole 12 and the axis of described penetrating via form angle; the axis that is described penetrating via does not overlap with the axis of described through hole 12; to such an extent as to thereby described special-shaped mobile 10 can not keep original situation to stop up described penetrating via again; and then guarantee that described needle tubing 4 can not stretch out from the circular hole of described cutting ferrule 8 through described through hole 12 again, has played the effect of anti-acupuncture protection.
The preferred spheroid that adopts of special-shaped mobile 10 in the present invention, certainly other shape is all unrestricted, as long as it can realize freely-movable (comprise and move, overturn, tilt etc.) and the axis of its through hole 12 and the axis of penetrating via are not overlapped in hollow inside.For example Fig. 6 has disclosed the second embodiment of the present invention, and the periphery cover of described needle tubing 4 has 2 special-shaped mobiles 10 that profile is identical, and the cross-sectional structure of this abnormity mobile is trapezoidal, comprises a through hole passing for needle tubing 4 12.Fig. 7 has disclosed the third embodiment of the present invention, and the periphery cover of described needle tubing 4 has 2 different 10, two special-shaped mobiles of special-shaped mobile of profile to include a through hole passing for needle tubing 4 12.
Therefore, the number for special-shaped mobile in the present invention is not limit, and special-shaped mobile number is more, and the effect of anti-acupuncture is better.
Fig. 8 to Figure 11 has disclosed the fourth embodiment of the present invention.In this example, described special-shaped mobile 10, for having the flat head screw structure of through hole 12, has a large end 17.One side of described cutting ferrule 8 inner chambers is provided with a wedge surface 18.State before venous detaining needle of the present invention is as shown in Figure 8 used, described special-shaped mobile 10 is socketed on described needle tubing 4, and holds greatly 17 near conduit 1 one sides, and same wedge surface 18 is also located near conduit 1 one sides.When venous detaining needle of the present invention is after use, as shown in Figure 9, described special-shaped mobile 10 drops and run-off the straight from needle tubing 4, make the axis of its axis and described penetrating via form angle, the axis that is described penetrating via does not overlap with the axis of described through hole 12, to such an extent as to the large end 17 of described special-shaped mobile 10 stops up described penetrating via.Due to the existence of wedge surface 18, it can produce guide effect to the inclination of the large end 17 of described special-shaped mobile 10, causes the described special-shaped mobile 10 must 100% ground run-off the straight, guarantees the realization of anti-acupuncture effect.And the inclination mode of described special-shaped mobile 10 is varied, as Figure 10,11 at least two kinds of disclosing.
Figure 12 to Figure 15 has disclosed the fifth embodiment of the present invention.In this example, described special-shaped mobile 10 is for having the trapezoid cross section structure of through hole 12.One side of described cutting ferrule 8 inner chambers is provided with a wedge surface 18.State before venous detaining needle of the present invention is as shown in figure 12 used, described special-shaped mobile 10 is socketed on described needle tubing 4, and trapezoidal long limit is near conduit 1 one sides, and same wedge surface 18 is also located near conduit 1 one sides.When venous detaining needle of the present invention is after use, as shown in figure 13, described special-shaped mobile 10 drops and run-off the straight from needle tubing 4, make the axis of its axis and described penetrating via form angle, the axis that is described penetrating via does not overlap with the axis of described through hole 12, to such an extent as to described penetrating via stops up in described special-shaped mobile 10.Due to the existence of wedge surface 18, it can produce guide effect to the inclination of described special-shaped mobile 10, causes the described special-shaped mobile 10 must 100% ground run-off the straight, guarantees the realization of anti-acupuncture effect.And the inclination mode of described special-shaped mobile 10 is varied, as Figure 14,15 at least two kinds of disclosing.
Due to the guide effect of wedge surface, can make the probability of the result realization of anti-acupuncture greatly increase, therefore, in first, second, third embodiment of the present invention, all can so arrange.
In the present invention, described cutting ferrule 8 is not limit with the connected mode of catheter block 2 yet, the interference fit in preferred embodiment for example, or second, third, the snap fit of the employing in the 4th, the 5th embodiment, the front end of described cutting ferrule 8 is provided with projection 15, and the rear end of described catheter block 2 is provided with the perforation of phase clamping with it.Certainly, the cutting ferrule 8 of described protecting seat and the connection between jam 9 also can adopt snap fit.
In order to ensure needle tubing 4, in the process retreating, can successfully protecting seat be pulled out from catheter block 2; in the 3rd embodiment as shown in Figure 7; the embedded metal derby 14 of described jam 9, described metal derby 14 has a circular hole, and the diameter of described circular hole is less than the maximum gauge of the flat body 16 of described needle tubing 4.When the flat body 16 of the needle tubing 4 of metal and metal derby 14 touch while connecing, can inerrably protecting seat be pulled out from catheter block 2 like this.
The present invention has overcome a usual thinking of current anti-acupuncture protection assembly; do not need needle tubing 4 bendings also can realize the object of anti-acupuncture, solved the problem that is subject to flexure strip pressure in needle tubing 4 fall back process constantly, structure is also simpler; assemble also more conveniently, be more suitable for marketing.
The present invention still has numerous embodiments, and all employing equivalents or equivalent transformation and all technical schemes of forming, within all dropping on protection scope of the present invention.
Claims (25)
1. a safe type venous retaining needle, comprises conduit tube component, needle tubing assembly and is connected to the transfusion joint (6) on described conduit tube component, and described conduit tube component comprises catheter block (2) and is arranged on the conduit (1) of described catheter block (2) front end; Described needle tubing assembly comprises needle stand (3) and is installed in the needle tubing (4) on described needle stand (3), and described needle tubing (4) is inserted in the inside of described conduit (1) and catheter block (2); It is characterized in that: between described catheter block (2) and described needle stand (3), be provided with an anti-acupuncture protection assembly; Described anti-acupuncture assembly comprises that one has the protecting seat of hollow structure; described protecting seat is provided with the penetrating via passing for described needle tubing (4); the hollow inside of described protecting seat is equipped with at least one special-shaped mobile (10); described special-shaped mobile (10) is provided with the through hole (12) passing for described needle tubing (4); when described needle tubing (4) departs from after the through hole (12) of described special-shaped mobile, described special-shaped mobile (10) loses strong point upset or tilts can not keep original situation again to such an extent as to stop up described penetrating via.
2. safe type venous retaining needle according to claim 1; it is characterized in that: described special-shaped mobile (10) is that profile is spherical; triangle; polygon or erose metalwork or working of plastics; when described needle tubing (4) passes described through hole (12), between described special-shaped mobile (10) and described protecting seat gapped (13).
3. safe type venous retaining needle according to claim 2, is characterized in that: when the profile of described special-shaped mobile (10) is while being spherical, described through hole (12) is through the described spherical centre of sphere.
4. safe type venous retaining needle according to claim 2, is characterized in that: described special-shaped mobile (10), for having flat head screw structure or the bullet structure of through hole (12), has one and holds greatly (17).
5. safe type venous retaining needle according to claim 1, is characterized in that: on described needle tubing (4), be equipped with two while being two the above special-shaped mobiles, being shaped as of described special-shaped mobile is identical or different.
6. according to the arbitrary described safe type venous retaining needle of claim 1 to 5, it is characterized in that: the inner chamber of described protecting seat has a wedge surface (18), described wedge surface (18) is located at a side of described protecting seat inner chamber.
7. safe type venous retaining needle according to claim 6; it is characterized in that: described protecting seat is formed by a cutting ferrule (8) and a jam (9) clamping; in described cutting ferrule (8) and jam (9), be equipped with the circular hole passing for described needle tubing (4); penetrating via described in described circular hole cavities formed co-axial, described wedge surface (18) is located at a side of described cutting ferrule (8) inner chamber.
8. safe type venous retaining needle according to claim 7, is characterized in that: the circular hole of described jam (9) is step-like, and the minimum diameter of the circular hole of described jam (9) is less than the maximum gauge of the flat body (16) of described needle tubing (4).
9. safe type venous retaining needle according to claim 8, it is characterized in that: the embedded metal derby of described jam (9) (14), described metal derby (14) has a circular hole, and the diameter of described circular hole is less than the maximum gauge of the flat body (16) of described needle tubing (4).
10. safe type venous retaining needle according to claim 9, is characterized in that: the front end of described cutting ferrule (8) is provided with projection (15), and the rear end of described catheter block (2) is provided with the perforation of phase clamping with it.
11. according to the arbitrary described safe type venous retaining needle of claim 1 to 5, it is characterized in that: in described catheter block (2), be provided with a batching pig (11), described batching pig (11) is positioned at the front end of described protecting seat; Described catheter block (2) is connected with note infusion connector (6) by a long duct (7), and described long duct is provided with a flow-stopping clip (5); Described note infusion connector (6) is needleless joint or positive pressure connector.
12. 1 kinds of safe type venous retaining needles, comprise conduit tube component, needle tubing assembly and are connected to the transfusion joint (6) on described conduit tube component, described conduit tube component comprises catheter block (2) and is arranged on the conduit (1) of described catheter block (2) front end, described needle tubing assembly comprises needle stand (3) and is installed in the needle tubing (4) on described needle stand (3), and described needle tubing (4) is inserted in the inside of described conduit (1) and catheter block (2), it is characterized in that: between described catheter block (2) and described needle stand (3), be provided with an anti-acupuncture protection assembly, described anti-acupuncture assembly comprises that one has the protecting seat of hollow structure, described protecting seat is provided with the penetrating via passing for described needle tubing (4), the hollow inside of described protecting seat is equipped with at least one special-shaped mobile (10), described special-shaped mobile (10) is provided with the through hole (12) passing for described needle tubing (4), when described needle tubing (4) departs from after the through hole (12) of described special-shaped mobile, the axis of described through hole (12) and the axis of described penetrating via form angle, described special-shaped mobile (10) can not keep original situation again to such an extent as to stop up described penetrating via.
13. safe type venous retaining needles according to claim 12; it is characterized in that: described special-shaped mobile (10) is that profile is spherical; triangle; polygon or erose metalwork or working of plastics; when described needle tubing (4) passes described through hole (12), between described special-shaped mobile (10) and described protecting seat gapped (13).
14. safe type venous retaining needles according to claim 13, is characterized in that: when the profile of described special-shaped mobile (10) is while being spherical, described through hole (12) is through the described spherical centre of sphere; When described special-shaped mobile (10) is when having the flat head screw structure of through hole (12) or bullet structure, it has an end (17) greatly.
15. safe type venous retaining needles according to claim 12, is characterized in that: on described needle tubing (4), be equipped with two while being two the above special-shaped mobiles, being shaped as of described special-shaped mobile is identical or different.
16. according to claim 12 to 15 arbitrary described safe type venous retaining needles, it is characterized in that: the inner chamber of described protecting seat has a wedge surface (18), and described wedge surface (18) is located at a side of described protecting seat inner chamber.
17. safe type venous retaining needles according to claim 16; it is characterized in that: described protecting seat is formed by a cutting ferrule (8) and a jam (9) clamping; in described cutting ferrule (8) and jam (9), be equipped with the circular hole passing for described needle tubing (4); penetrating via described in described circular hole cavities formed co-axial, described wedge surface (18) is located at a side of described cutting ferrule (8) inner chamber.
18. safe type venous retaining needles according to claim 17, is characterized in that: the circular hole of described jam (9) is step-like, and the minimum diameter of the circular hole of described jam (9) is less than the maximum gauge of the flat body (16) of described needle tubing (4).
19. safe type venous retaining needles according to claim 18, it is characterized in that: the embedded metal derby of described jam (9) (14), described metal derby (14) has a circular hole, and the diameter of described circular hole is less than the maximum gauge of the flat body (16) of described needle tubing (4).
20. safe type venous retaining needles according to claim 19, is characterized in that: the front end of described cutting ferrule (8) is provided with projection (15), and the rear end of described catheter block (2) is provided with the perforation of phase clamping with it.
21. 1 kinds of safe type venous retaining needles, comprise conduit tube component, needle tubing assembly and are connected to the transfusion joint (6) on described conduit tube component, described conduit tube component comprises catheter block (2) and is arranged on the conduit (1) of described catheter block (2) front end, described needle tubing assembly comprises needle stand (3) and is installed in the needle tubing (4) on described needle stand (3), and described needle tubing (4) is inserted in the inside of described conduit (1) and catheter block (2), it is characterized in that: between described catheter block (2) and described needle stand (3), be provided with an anti-acupuncture protection assembly, described anti-acupuncture assembly comprises that one has the protecting seat of hollow structure, described protecting seat is provided with the penetrating via passing for described needle tubing (4), the hollow inside of described protecting seat is equipped with at least one special-shaped mobile (10), described special-shaped mobile (10) is provided with the through hole (12) passing for described needle tubing (4), the maximum inner diameter of the hollow inside of described protecting seat is greater than the maximum outside diameter of described special-shaped mobile (10), when described needle tubing (4) departs from after the through hole (12) of described special-shaped mobile, the axis of described penetrating via does not overlap with the axis of described through hole (12), described special-shaped mobile (10) can not keep original situation again to such an extent as to stop up described penetrating via.
22. safe type venous retaining needles according to claim 21; it is characterized in that: described special-shaped mobile (10) is that profile is spherical; triangle; polygon or erose metalwork or working of plastics; when described needle tubing (4) passes described through hole (12), between described special-shaped mobile (10) and described protecting seat gapped (13).
23. safe type venous retaining needles according to claim 21, is characterized in that: on described needle tubing (4), be equipped with two while being two the above special-shaped mobiles, being shaped as of described special-shaped mobile is identical or different.
24. according to the arbitrary described safe type venous retaining needle of claim 21 to 23, it is characterized in that: the inner chamber of described protecting seat has a wedge surface (18), and described wedge surface (18) is located at a side of described protecting seat inner chamber.
25. safe type venous retaining needles according to claim 24; it is characterized in that: described protecting seat is formed by a cutting ferrule (8) and a jam (9) clamping; in described cutting ferrule (8) and jam (9), be equipped with the circular hole passing for described needle tubing (4); penetrating via described in described circular hole cavities formed co-axial; described wedge surface (18) is located at a side of described cutting ferrule (8) inner chamber, and the maximum inner diameter of the hollow inside of described protecting seat is the maximum inner diameter of described cutting ferrule (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410216802.6A CN103990202B (en) | 2013-12-16 | 2014-05-22 | Safety-type venous indwelling needle |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310685402.5 | 2013-12-16 | ||
| CN201310685402.5A CN103691031A (en) | 2013-12-16 | 2013-12-16 | Safety venous indwelling needle |
| CN2013106854025 | 2013-12-16 | ||
| CN201410216802.6A CN103990202B (en) | 2013-12-16 | 2014-05-22 | Safety-type venous indwelling needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103990202A true CN103990202A (en) | 2014-08-20 |
| CN103990202B CN103990202B (en) | 2015-05-13 |
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Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310685402.5A Pending CN103691031A (en) | 2013-12-16 | 2013-12-16 | Safety venous indwelling needle |
| CN201410216802.6A Active CN103990202B (en) | 2013-12-16 | 2014-05-22 | Safety-type venous indwelling needle |
| CN201420262617.6U Withdrawn - After Issue CN204017014U (en) | 2013-12-16 | 2014-05-22 | Safe type venous retaining needle |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310685402.5A Pending CN103691031A (en) | 2013-12-16 | 2013-12-16 | Safety venous indwelling needle |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420262617.6U Withdrawn - After Issue CN204017014U (en) | 2013-12-16 | 2014-05-22 | Safe type venous retaining needle |
Country Status (1)
| Country | Link |
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| CN (3) | CN103691031A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103691031A (en) * | 2013-12-16 | 2014-04-02 | 苏州林华医疗器械有限公司 | Safety venous indwelling needle |
| CN105879151A (en) * | 2014-08-21 | 2016-08-24 | 陈艳玲 | Fixed handle storage seal liquid type non-backflow disposal vein remaining needle |
| CN104548262A (en) * | 2015-01-12 | 2015-04-29 | 江苏磐宇科技有限公司 | Shrapnel-type anti-acupuncture straight remaining needle production process |
| CN105879152A (en) * | 2015-01-26 | 2016-08-24 | 陈艳玲 | Long-handle two-way folding pipe-free rolling type backflow preventing venous indwelling needle |
| CN106178191A (en) * | 2016-08-24 | 2016-12-07 | 迈得医疗工业设备股份有限公司 | The manufacture equipment of medical metal pin and medical metal pin |
| US11291755B2 (en) | 2018-06-19 | 2022-04-05 | Aadi Innovations LLC | Arteriovenous access catheter with protectable inline needle |
| CN109481783B (en) * | 2018-12-06 | 2024-03-26 | 苏州林华医疗器械股份有限公司 | Safety venous indwelling needle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080147010A1 (en) * | 2006-12-18 | 2008-06-19 | Hiroaki Nakajima | Indwelling needle assembly |
| JP2008229371A (en) * | 2008-05-14 | 2008-10-02 | Nipro Corp | Indwelling needle for dialysis |
| CN202605426U (en) * | 2012-04-12 | 2012-12-19 | 福建省百仕韦医用高分子股份有限公司 | Connecting plug in impaling component of remaining needle |
| CN103007385A (en) * | 2013-01-05 | 2013-04-03 | 广州阳普医疗科技股份有限公司 | Secure type indwelling and shielding cap |
| CN103285450A (en) * | 2013-03-25 | 2013-09-11 | 南通恒泰医疗器材有限公司 | Multifunctional indwelling needle |
| CN204017014U (en) * | 2013-12-16 | 2014-12-17 | 苏州林华医疗器械有限公司 | Safe type venous retaining needle |
-
2013
- 2013-12-16 CN CN201310685402.5A patent/CN103691031A/en active Pending
-
2014
- 2014-05-22 CN CN201410216802.6A patent/CN103990202B/en active Active
- 2014-05-22 CN CN201420262617.6U patent/CN204017014U/en not_active Withdrawn - After Issue
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080147010A1 (en) * | 2006-12-18 | 2008-06-19 | Hiroaki Nakajima | Indwelling needle assembly |
| JP2008229371A (en) * | 2008-05-14 | 2008-10-02 | Nipro Corp | Indwelling needle for dialysis |
| CN202605426U (en) * | 2012-04-12 | 2012-12-19 | 福建省百仕韦医用高分子股份有限公司 | Connecting plug in impaling component of remaining needle |
| CN103007385A (en) * | 2013-01-05 | 2013-04-03 | 广州阳普医疗科技股份有限公司 | Secure type indwelling and shielding cap |
| CN103285450A (en) * | 2013-03-25 | 2013-09-11 | 南通恒泰医疗器材有限公司 | Multifunctional indwelling needle |
| CN204017014U (en) * | 2013-12-16 | 2014-12-17 | 苏州林华医疗器械有限公司 | Safe type venous retaining needle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103691031A (en) | 2014-04-02 |
| CN204017014U (en) | 2014-12-17 |
| CN103990202B (en) | 2015-05-13 |
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Address after: 215101 No. 3, new road, Suzhou Industrial Park, Jiangsu, China Patentee after: SUZHOU LINHUA MEDICAL INSTRUMENT CO., LTD. Address before: 215101 No. 3, new road, Suzhou Industrial Park, Jiangsu, China Patentee before: Linhua Medical Appliances Co., Ltd., Suzhou |