CN103599580A - Continuous positive pressure venous indwelling needle - Google Patents

Continuous positive pressure venous indwelling needle Download PDF

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Publication number
CN103599580A
CN103599580A CN201310580399.0A CN201310580399A CN103599580A CN 103599580 A CN103599580 A CN 103599580A CN 201310580399 A CN201310580399 A CN 201310580399A CN 103599580 A CN103599580 A CN 103599580A
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China
Prior art keywords
needle
positive pressure
continuous positive
long duct
catheter
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CN201310580399.0A
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Chinese (zh)
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CN103599580B (en
Inventor
吴林元
俞云龙
周军
杭永林
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苏州林华医疗器械有限公司
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Priority to CN201310580399.0A priority Critical patent/CN103599580B/en
Publication of CN103599580A publication Critical patent/CN103599580A/en
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Publication of CN103599580B publication Critical patent/CN103599580B/en

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Abstract

The invention discloses a continuous positive pressure venous indwelling needle comprising a catheter component, a needle tube component and an infusion liquid connector component. The catheter component comprises a tee catheter holder and a catheter. The needle tube component comprises a needle holder tube. The infusion liquid connector component is a needleless infusion connector. The tee catheter holder is connected with the needleless infusion connector through a long catheter, and a flow-limiting clamp used for limiting flow speed of liquid medicine in the long catheter is fitted outside the long catheter. The long catheter is provided with a pressure liquid storage part. When the pressure liquid storage part contains the liquid medicine, a pressure source of the pressure liquid storage part enables the long catheter and the catheter to admit flows under positive pressure. The continuous positive pressure venous indwelling needle has the outstanding advantages that the pressure liquid storage part of the long catheter enables the long catheter and the catheter to admit the flows under positive pressure, thrombosis is prevented effectively, and the risk of medical accidents is reduced greatly.

Description

Continuous positive pressure venous detaining needle
Technical field
The invention belongs to and note defeated instrument field, relate in particular to and a kind ofly can effectively prevent thrombotic venous detaining needle.
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.
A kind of venous detaining needle is disclosed in Chinese patent CN202822325U, as shown in Figure 1, comprise conduit tube component, needle tubing assembly and transfusion adapter assembly, described conduit tube component comprises threeway catheter block 2 and is connected to the conduit 1 of the first opening 21 front ends of described threeway catheter block 2.Described needle tubing assembly comprises the needle stand 3 outside the 3rd opening 23 that is set in described threeway catheter block 2 and is connected to the needle tubing (not shown) on needle stand 3, and described needle tubing is inserted in the inside of described conduit 1 and threeway catheter block 2.The second opening 22 of described threeway catheter block 2 connects described transfusion adapter assembly, and described transfusion adapter assembly comprises long duct 4, flow-stopping clip 5 ', infusion joint 6, calparine cap 7, end cap 8 etc.; The second opening 22 of described threeway catheter block 2 connects described long duct 4, on described long duct 4, is furnished with flow-stopping clip 5 ', and the other end of described long duct 4 is connected to described infusion joint 6; One side of described infusion joint 6 is provided with calparine cap 7, and opposite side is connected with an end cap 8; Note defeated device and can be inserted into the infusion that carries out normal saline in described calparine cap 7.
Existing venous detaining needle in use, need to make described flow-stopping clip 5 ' in open mode, by noting defeated device, coordinates calparine cap 7 or end cap 8 to infuse; After infusion-completed, by a side of end cap 8 sealing infusion joints 6, and opposite side pushes this and notes the normal saline in defeated device by being connected to the defeated device of notes on calparine cap 7, in order to wash away the inner chamber of described venous detaining needle; After washing away, apply external force and flow-stopping clip 5 ' is closed close, the boss 51 of described flow-stopping clip 5 ' clamps long ducts 4 also makes long duct 4 in disconnection state.And can make like this in the conduit with sick body contact position in negative pressure state, blood can be back in conduit 1, long thromboblast precipitation and then the promotion thrombosis of can shining of time one, likely can cause venous detaining needle to stop up, or also may upper while once infusing thrombosis can enter in sick body with medicinal liquid, cause unnecessary malpractice.
Summary of the invention
Defect in view of above-mentioned prior art exists, the object of the invention is to propose a kind of continuous positive pressure venous detaining needle, makes interior can the continuing in barotropic state of conduit of venous detaining needle, the formation of anti-tampon.
Object of the present invention will be achieved by the following technical programs:
A continuous positive pressure venous detaining needle, comprising: conduit tube component, needle tubing assembly and transfusion adapter assembly, and described conduit tube component comprises threeway catheter block and is arranged on the conduit of described threeway 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 threeway catheter block; Described transfusion adapter assembly is needleless infusion joint; Described threeway catheter block connects described needleless infusion joint by a long duct, and described long duct connects the current limliting folder that is useful on the described long duct inner liquid medicine flow velocity of restriction outward; Described long duct is provided with pressure liquid storage part, and while being provided with medicinal liquid in described pressure liquid storage part, the pressure source of described pressure liquid storage part makes long duct and conduit all the time in the through-flow state of malleation.
Preferably, described long duct is inflatable soft tube, and the dilation of described inflatable soft tube is pressure liquid storage part.
Preferably, the pressure source of described inflatable soft tube is the retraction outer wall after described dilation expands.
Preferably, described long duct is the inflatable silica gel tube of an integration.Or described long duct is at least to have the silica gel tube of two-stage structure, wherein at least one section is inflatable silica gel tube.
Preferably, described current limliting folder is for not exclusively sealing folder.
Preferably, described current limliting fixture is useful on the boss that described long duct is clamped to current limliting, and described boss is provided with the groove for medicinal liquid can slowly be passed through, and the reeded boss of described tool forms the incomplete enclosed construction of described incomplete sealing folder.
Preferably, described current limliting folder is electrodeless or has extremely adjustable current limliting folder.
Preferably, described current limliting folder comprises at least two grabs.
Outstanding effect of the present invention is: the pressure liquid storage of described long duct partly makes long duct and conduit all the time in the through-flow state of malleation, has effectively prevented the formation of thrombosis, thereby greatly reduces the risk that causes malpractice.
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 structural representation of the venous detaining needle of prior art;
Fig. 2 is the part-structure schematic diagram of the preferred embodiment of continuous positive pressure venous detaining needle of the present invention, and now current limliting folder is in open mode;
Fig. 3 is the part-structure schematic diagram of the preferred embodiment of continuous positive pressure venous detaining needle of the present invention, and now current limliting folder is in closing the state of closing, and notes defeated device and be inserted into infusion normal saline in needleless infusion joint;
Fig. 4 is the structural representation of the second embodiment of the long duct of continuous positive pressure venous detaining needle of the present invention.
Fig. 5 is the structural representation of the second embodiment of the current limliting folder of continuous positive pressure venous detaining needle of the present invention.
The specific embodiment
The present invention has disclosed a kind of continuous positive pressure venous detaining needle, as shown in Figure 2, same as the prior art, comprises conduit tube component, needle tubing assembly.Described conduit tube component comprises threeway catheter block 2 and is connected to the conduit 1 of the first opening 21 front ends of described threeway catheter block 2.Described needle tubing assembly comprises the needle stand 3 outside the 3rd opening 23 that is set in described threeway catheter block 2 and is connected to the needle tubing 31 on needle stand 3, and described needle tubing 31 is inserted in the inside of described conduit 1 and threeway catheter block 2.
In the present invention, the second opening 22 of described threeway catheter block 2 connects described transfusion adapter assembly by a long duct 4, described transfusion adapter assembly is needleless infusion joint 10, notes defeated device 9 and can be inserted into the infusion that carries out normal saline in described needleless infusion joint 10.Described needleless infusion joint 10 is an one-way valve structures, all has announcement in Chinese patent ZL201220270229.3 and ZL201320048046.1, does not therefore repeat them here.When the defeated device 9 of notes carries out the infusion of normal saline, the infusion direction of normal saline only allows from noting defeated device 9 toward long duct 4 directions.
Shown in Fig. 2 and Fig. 3, described long duct 4 is provided with pressure liquid storage part, and described long duct 4 is inflatable soft tube, and the dilation 41 of described inflatable soft tube is pressure liquid storage part.The pressure source of described inflatable soft tube is the retraction outer wall after described dilation 41 expands.
The inflatable soft tube of an integration that described long duct 4 can disclose for Fig. 3, the inflatable soft tube at least with two-stage structure that also can disclose for Fig. 4, wherein at least one section is inflatable soft tube, an i.e. conduct wherein segment structure is the inflatable soft tube with dilation 41, and another segment structure is not for possessing the common soft tube of expansion structure.In the present invention, silica gel tube is as the respond well soft tube of dilatancy as first-selection, and certainly, the silica gel tube in the present invention also can be with the expandable tubular replacement of other soft materials.As shown in Figure 4, described long duct 4 comprises two segment expandable silica gel tubes.Certainly, two sections of above inflatable silica gel tubes are also within protection scope of the present invention.
The outer current limliting folder 5 that is useful on the described long duct 4 inner liquid medicine flow velocitys of restriction that connects of described long duct 4.Described current limliting folder 5 is that not exclusively sealing is pressed from both sides, described current limliting folder 5 has for described long duct 4 being clamped to the boss 51 of current limliting, described boss 51 is provided with the groove 52 for medicinal liquid can slowly be passed through, described in there is groove 52 boss 51 form the incomplete enclosed construction of described incomplete sealing folder.The effect of current limliting in the present invention folder is: when it closes after closing, can play metering function, and note and when defeated device 9 pushes normal saline, limitedly seal one end of long duct 4 and the dilation 41 of this long duct 4 is expanded and then liquid storage.As long as therefore can reach well the current limliting folder of these effects, all belong to replacement scheme of the present invention.
When continuous positive pressure venous detaining needle of the present invention in use, as shown in Figure 2, first described current limliting folder 5 is placed in to open mode, by noting defeated device, coordinate needleless infusion joint 10 or end cap 8 one sides to infuse; After infusion-completed, use a side of end cap 8 sealing infusion joints 6, and opposite side pushes this and notes the normal saline in defeated device by noting defeated device 9, in order to wash away the inner chamber of described venous detaining needle; As shown in Figure 3, after washing away, applying external force closes current limliting folder 5 to close, and then once use the defeated device 9 of notes to pass through needleless infusion joint 10 to the interior propelling movement normal saline of long duct 4, and now, due to the metering function of current limliting folder 5 and the check valve effect of needleless infusion joint 10, the normal saline that makes to enter into fast in long duct 4 is oppressed described long duct 4, and the dilation 41 of long duct 4 is expanded, and then liquid storage.Then, remove and note defeated device 9, the outer wall after described dilation 41 expands can produce pressure to the normal saline in it in the process of retraction, and then makes long duct 4 and conduit 1 all the time in the through-flow state of malleation under the cooperation of current limliting folder 5.Like this, just can effectively prevent blood backflow, and well limit the generation of thrombosis.
Preferably, current limliting of the present invention folder 5 can be for electrodeless or have an extremely adjustable current limliting folder.As shown in Figure 5, described current limliting folder 5 comprises at least two grabs 53.Each grab 53 closes current limliting folder 5 and closes the clamping force difference of rear clamping long duct 4, and then can have the regulation and control of polar region to long duct 4 inner liquid medicine flow velocitys.And same, adopt existing transfusion device speed regulator to press from both sides as current limliting, can relatively without polar region, carry out the regulation and control of medicinal liquid flow velocity.
The present invention still has numerous embodiments, and for example the pressure source of described inflatable soft tube also can be for being connected in the external pressure source of described dilation; Or needleless infusion joint 10 needn't arrange the notes infusion channel of end cap 8 one sides.All employing equivalents or equivalent transformation and all technical schemes of forming, within all dropping on protection scope of the present invention.

Claims (9)

1. a continuous positive pressure venous detaining needle, comprising:
Conduit tube component, needle tubing assembly and transfusion adapter assembly,
Described conduit tube component comprises threeway catheter block (2) and is arranged on the conduit (1) of described threeway catheter block (2) front end;
Described needle tubing assembly comprises needle stand (3) and is installed in the needle tubing (31) on described needle stand (3), and described needle tubing (31) is inserted in the inside of described conduit (1) and threeway catheter block (2);
It is characterized in that:
Described transfusion adapter assembly is needleless infusion joint (10);
Described threeway catheter block (2) connects described needleless infusion joint (10) by a long duct (4), and the outer current limliting folder (5) that is useful on restriction described long duct (4) inner liquid medicine flow velocity that connects of described long duct (4);
Described long duct (4) is provided with pressure liquid storage part, and while being provided with medicinal liquid in described pressure liquid storage part, the pressure source of described pressure liquid storage part makes long duct (4) and conduit (1) all the time in the through-flow state of malleation.
2. continuous positive pressure venous detaining needle according to claim 1, is characterized in that: described long duct (4) is inflatable soft tube, and the dilation of described inflatable soft tube (41) is pressure liquid storage part.
3. continuous positive pressure venous detaining needle according to claim 2, is characterized in that: the pressure source of described inflatable soft tube is the retraction outer wall after described dilation (41) expands.
4. according to the continuous positive pressure venous detaining needle described in claim 1 or 2 or 3, it is characterized in that: described long duct (4) is the inflatable silica gel tube of an integration.
5. according to the continuous positive pressure venous detaining needle described in claim 1 or 2 or 3, it is characterized in that: at least to have the silica gel tube of two-stage structure, wherein at least one section is inflatable silica gel tube to described long duct (4).
6. according to the continuous positive pressure venous detaining needle described in claim 1 or 2 or 3, it is characterized in that: described current limliting folder (5) is for not exclusively sealing folder.
7. continuous positive pressure venous detaining needle according to claim 6, it is characterized in that: described current limliting folder (5) has for described long duct (4) being clamped to the boss (51) of current limliting, described boss (51) is provided with the groove (52) for medicinal liquid can slowly be passed through, described in there are groove (52) boss (51) form the incomplete enclosed construction of described incomplete sealing folder.
8. continuous positive pressure venous detaining needle according to claim 6, is characterized in that: described current limliting folder (5) is electrodeless or has extremely adjustable current limliting folder.
9. continuous positive pressure venous detaining needle according to claim 8, is characterized in that: described current limliting folder (5) comprises at least two grabs (53).
CN201310580399.0A 2013-11-19 2013-11-19 Continuous positive pressure venous detaining needle CN103599580B (en)

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CN103599580B CN103599580B (en) 2016-03-02

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104001231A (en) * 2014-05-15 2014-08-27 上海金塔医用器材有限公司 Safety pump remaining needle
CN104043162A (en) * 2014-07-17 2014-09-17 谢世庚 Thrombus preventing venous indwelling needle and thrombus preventing method thereof
CN104162202A (en) * 2014-06-10 2014-11-26 丁培琪 Reverse-flowing-prevention venous indwelling needle
CN104399144A (en) * 2014-12-01 2015-03-11 邹卫平 Remaining needle with slow release positive pressure
CN104399145A (en) * 2014-12-18 2015-03-11 邓杜娟 Double-cavity-catheter self-sealing venous indwelling needle
CN104645448A (en) * 2015-02-02 2015-05-27 湛江健力源医疗用品有限公司 Anti-reflux remaining needle
CN104998323A (en) * 2015-07-20 2015-10-28 北京伏尔特技术有限公司 Novel continuous slow liquid feeding apparatus and installation and application method thereof
CN107412912A (en) * 2017-09-19 2017-12-01 河南驼人医疗器械集团有限公司 It is a kind of to continue micro- transfusion vein indwelling needle

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US5059174A (en) * 1990-08-23 1991-10-22 Vaillancourt Vincent L Fluid infusion delivery system
CN202136638U (en) * 2011-01-10 2012-02-08 许春燕 Disposable pipe-washing-free vesica-type negative pressure venous indwelling needle
CN203060462U (en) * 2013-02-05 2013-07-17 河南新卫医疗器械有限公司 Protection type positive-pressure indwelling needle
CN203169724U (en) * 2013-01-29 2013-09-04 苏州林华医疗器械有限公司 Disposable safe indwelling needle
CN203609713U (en) * 2013-11-19 2014-05-28 苏州林华医疗器械有限公司 Continuous positive-pressure venous indwelling needle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5059174A (en) * 1990-08-23 1991-10-22 Vaillancourt Vincent L Fluid infusion delivery system
CN202136638U (en) * 2011-01-10 2012-02-08 许春燕 Disposable pipe-washing-free vesica-type negative pressure venous indwelling needle
CN203169724U (en) * 2013-01-29 2013-09-04 苏州林华医疗器械有限公司 Disposable safe indwelling needle
CN203060462U (en) * 2013-02-05 2013-07-17 河南新卫医疗器械有限公司 Protection type positive-pressure indwelling needle
CN203609713U (en) * 2013-11-19 2014-05-28 苏州林华医疗器械有限公司 Continuous positive-pressure venous indwelling needle

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015172423A1 (en) * 2014-05-15 2015-11-19 上海金塔医用器材有限公司 Safe pump indwelling needle
CN104001231B (en) * 2014-05-15 2015-05-27 上海金塔医用器材有限公司 Safety pump remaining needle
CN104001231A (en) * 2014-05-15 2014-08-27 上海金塔医用器材有限公司 Safety pump remaining needle
CN104162202A (en) * 2014-06-10 2014-11-26 丁培琪 Reverse-flowing-prevention venous indwelling needle
CN104043162A (en) * 2014-07-17 2014-09-17 谢世庚 Thrombus preventing venous indwelling needle and thrombus preventing method thereof
CN104399144A (en) * 2014-12-01 2015-03-11 邹卫平 Remaining needle with slow release positive pressure
CN104399145A (en) * 2014-12-18 2015-03-11 邓杜娟 Double-cavity-catheter self-sealing venous indwelling needle
CN104399145B (en) * 2014-12-18 2016-11-23 邓杜娟 A kind of double lumen tube self-sealing venous detaining needle
CN104645448A (en) * 2015-02-02 2015-05-27 湛江健力源医疗用品有限公司 Anti-reflux remaining needle
CN104645448B (en) * 2015-02-02 2018-07-13 湛江健力源医疗用品有限公司 A kind of reverse flow resistant indwelling needle
CN104998323A (en) * 2015-07-20 2015-10-28 北京伏尔特技术有限公司 Novel continuous slow liquid feeding apparatus and installation and application method thereof
CN104998323B (en) * 2015-07-20 2019-02-05 北京伏尔特技术有限公司 It is a kind of to continue slow liquid dispensing apparatus and its installation method
CN107412912A (en) * 2017-09-19 2017-12-01 河南驼人医疗器械集团有限公司 It is a kind of to continue micro- transfusion vein indwelling needle

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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